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Add arm-nacl port.

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This commit is contained in:
Roland McGrath 2015-04-17 09:02:19 -07:00
parent f70925993a
commit d1e44df1fa
127 changed files with 5120 additions and 0 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2015-04-17 Roland McGrath <roland@hack.frob.com>
Add preliminary port to Google Native Client on ARM.
* abi-tags (.*-.*-nacl.*): New entry.
* sysdeps/arm/nacl: New directory.
* sysdeps/nacl: New directory.
2015-04-16 David S. Miller <davem@davemloft.net>
* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Make use of

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abi-tags
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@ -28,5 +28,7 @@
.*-.*-syllable.* 5 2.0.0 # just an arbitrary value
.*-.*-nacl.* 6 42.0.0 # earliest compatible Chromium version
# There is no catch-all default here because every supported OS that uses
# ELF must have its own unique ABI tag.

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sysdeps/arm/nacl/Implies Normal file
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arm/nptl
init_array

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sysdeps/arm/nacl/Makefile Normal file
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# Makefile fragment for ARM/NaCl configurations.
# Copyright (C) 2015 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
# sysdeps/nacl/Makefile needs this set to the architecture suffix used in
# the NaCl SDK.
nacl-sdk-arch = arm
# We don't really support TLSDESC, even though the compiler thinks it does.
have-arm-tls-desc = no
ifeq ($(subdir),csu)
sysdep_routines += aeabi_read_tp
endif
ifeq ($(subdir),elf)
sysdep-rtld-routines += aeabi_read_tp
endif

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sysdeps/arm/nacl/____longjmp_chk.S Normal file
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/* longjmp that validates stack addresses. ARM/NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
.section .rodata.str1.1,"aMS",%progbits,1
.type longjmp_msg,%object
longjmp_msg:
.string "longjmp causes uninitialized stack frame"
.size longjmp_msg, .-longjmp_msg
.text
/* We don't have sigaltstack and so any longjmp must be to an outer frame. */
.macro check_sp reg
cmp sp, \reg
bls .Lok
#ifdef PIC
movw r0, #:lower16:longjmp_msg-(.LPIC0+8)
movt r0, #:upper16:longjmp_msg-(.LPIC0+8)
.LPIC0: add r0, r0, pc
#else
movw r0, #:lower16:longjmp_msg
movt r0, #:upper16:longjmp_msg
#endif
b HIDDEN_JUMPTARGET(__fortify_fail)
.Lok:
.endm
#define CHECK_SP(reg) check_sp reg
#define __longjmp ____longjmp_chk
#include <__longjmp.S>

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sysdeps/arm/nacl/aeabi_read_tp.S Normal file
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/* ARM EABI helper function for reading the thread pointer. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
In addition to the permissions in the GNU Lesser General Public
License, the Free Software Foundation gives you unlimited
permission to link the compiled version of this file with other
programs, and to distribute those programs without any restriction
coming from the use of this file. (The GNU Lesser General Public
License restrictions do apply in other respects; for example, they
cover modification of the file, and distribution when not linked
into another program.)
Note that people who make modified versions of this file are not
obligated to grant this special exception for their modified
versions; it is their choice whether to do so. The GNU Lesser
General Public License gives permission to release a modified
version without this exception; this exception also makes it
possible to release a modified version which carries forward this
exception.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
/* GCC will emit calls to this routine under -mtp=soft. */
.hidden __aeabi_read_tp
ENTRY (__aeabi_read_tp)
ldr r0, [r9]
sfi_bx lr
END (__aeabi_read_tp)

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sysdeps/arm/nacl/arm-features.h Normal file
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/* Macros to test for CPU features on ARM. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _NACL_ARM_FEATURES_H
#define _NACL_ARM_FEATURES_H 1
#ifdef __SOFTFP__
# error NaCl should always have VFP enabled
#endif
/* NaCl does not support iWMMXt at all. */
#define ARM_ASSUME_NO_IWMMXT 1
/* NaCl does not allow instructions to target the pc register. */
#define ARM_ALWAYS_BX 1
/* Computed branch targets must be bundle-aligned, which is to 16 bytes. */
#define ARM_BX_ALIGN_LOG2 4
/* Two-register addressing modes are never allowed. */
#define ARM_NO_INDEX_REGISTER 1
/* Only ARM mode code is allowed, never Thumb mode. */
#define NO_THUMB
#include_next <arm-features.h>
#endif /* arm-features.h */

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sysdeps/arm/nacl/dl-machine.h Normal file
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/* Machine-dependent ELF dynamic relocation inline functions. ARM/NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef dl_machine_h
/* This is only needed for handling TEXTRELs and NaCl will never
support TEXTRELs at all. */
#define CLEAR_CACHE(start, end) __builtin_trap ()
#endif
/* The rest is just machine-specific.
This #include is outside the #ifndef because the parts of
dl-machine.h used only by dynamic-link.h are outside the guard. */
#include <sysdeps/arm/dl-machine.h>
#ifdef dl_machine_h
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
#undef RTLD_START
#define RTLD_START asm ("\
.text\n\
.globl _start\n\
.type _start, %function\n\
.p2align 4\n\
_start:\n\
@ r0 has the pointer to the info block (see nacl_startup.h)\n\
mov r1, sp @ Save stack base for __libc_stack_end.\n\
push {r0-r3} @ Push those, maintaining alignment to 16.\n\
mov r0, sp @ Pointer to {info, sp} is argument.\n\
sfi_bl _dl_start\n\
pop {r1-r4} @ Restore stack, getting info block into r1.\n\
mov lr, #0 @ Return address for noreturn call.\n\
b _dl_start_user");
#endif

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sysdeps/arm/nacl/dl-trampoline.S Normal file
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/* PLT trampolines. ARM/NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
.syntax unified
.text
@ Change &GOT[n+3] into 8*n. Note relocs are 8 bytes each.
.macro compute_reloc_arg pltgot, got2
sub r1, \pltgot, \got2 @ r1 = &GOT[n+3] - &GOT[2] = 4*(n-1)
sub r1, r1, #4 @ r1 = 4*n
add r1, r1, r1 @ r1 *= 2 = 8*n
.endm
CFI_SECTIONS
.globl _dl_runtime_resolve
.type _dl_runtime_resolve, %function
.p2align 4
_dl_runtime_resolve:
cfi_startproc
cfi_adjust_cfa_offset (8)
@ We get called with:
@ lr contains the return address from this call
@ stack[1] contains &GOT[n+3] (pointer to function)
@ stack[0] points to &GOT[2]
ldr ip, [sp] @ ip gets &GOT[2]
@ Save the argument registers and the return address.
@ r4 doesn't need to be saved, but it makes the total
@ adjustment to sp (including the two words pushed by
@ the PLT code) an even eight words, so sp stays aligned.
push {r0-r4, lr}
cfi_adjust_cfa_offset (24)
cfi_rel_offset (r0, 0)
cfi_rel_offset (r1, 4)
cfi_rel_offset (r2, 8)
cfi_rel_offset (r3, 12)
cfi_rel_offset (r4, 16)
cfi_rel_offset (lr, 20)
ldr r1, [sp, #28] @ r1 gets &GOT[n+3]
@ Get the 'struct link_map *' for the first argument to _dl_fixup.
sfi_breg ip, ldr r0, [\B, #-4]
@ Get the reloc offset for the second argument to _dl_fixup.
compute_reloc_arg r1, ip
@ This does the real work, and returns the real call target.
sfi_bl _dl_fixup
mov ip, r0
@ Restore the saved registers.
pop {r0-r4, lr}
cfi_adjust_cfa_offset (-24)
cfi_restore (r0)
cfi_restore (r1)
cfi_restore (r2)
cfi_restore (r3)
cfi_restore (r4)
cfi_restore (lr)
@ Now compensate for the two words pushed by the PLT code.
sfi_sp add sp, #8
cfi_adjust_cfa_offset (-8)
@ Finally, jump to the newfound call target.
sfi_bx ip
cfi_endproc
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#ifndef PROF
.globl _dl_runtime_profile
.type _dl_runtime_profile, #function
.p2align 4
_dl_runtime_profile:
cfi_startproc
cfi_adjust_cfa_offset (8)
@ We get called with:
@ lr contains the return address from this call
@ stack[1] contains &GOT[n+3] (pointer to function)
@ stack[0] points to &GOT[2]
@ Stack layout:
@ sp + 204 framesize returned from pltenter
@ sp + 12 La_arm_regs
@ sp + 4 Saved two arguments to _dl_profile_fixup
@ sp + 0 outgoing argument to _dl_profile_fixup
@ For now, we only save the general purpose registers.
# define PLTEXIT_ARGS 4
# define LA_ARM_REGS (PLTEXIT_ARGS + 8)
# define LA_ARM_REGS_SIZE (4 * (4 + 1 + 1 + 42))
# define PLTENTER_FRAMESIZE (LA_ARM_REGS + LA_ARM_REGS_SIZE)
# define FRAMESIZE (((PLTENTER_FRAMESIZE + 4) + 15) & -16)
@ The NaCl ABI requires that sp be aligned to 16 bytes at call
@ sites. Assuming that was met on entry to the PLT, sp is
@ now exactly 8 bytes misaligned.
sfi_sp sub sp, #(FRAMESIZE - 8)
cfi_def_cfa_offset (FRAMESIZE)
@ Store the argument registers in La_arm_regs.
strd r0, r1, [sp, #LA_ARM_REGS]
cfi_offset (r0, LA_ARM_REGS + 0)
cfi_offset (r1, LA_ARM_REGS + 4)
strd r2, r3, [sp, #(LA_ARM_REGS + 8)]
cfi_offset (r2, LA_ARM_REGS + 8)
cfi_offset (r3, LA_ARM_REGS + 12)
ldr ip, [sp, #(FRAMESIZE - 8)] @ ip gets &GOT[2]
ldr r3, [sp, #(FRAMESIZE - 4)] @ r3 gets &GOT[n+3]
@ Recover the incoming sp and lr and save those in La_arm_regs.
add r0, sp, #FRAMESIZE
mov r1, lr
strd r0, r1, [sp, #(LA_ARM_REGS + 16)]
cfi_offset (sp, LA_ARM_REGS + 16)
cfi_offset (lr, LA_ARM_REGS + 20)
@ Get the 'struct link_map *' for the first arg to _dl_profile_fixup.
sfi_breg ip, ldr r0, [\B, #-4]
@ Get the reloc offset for the second argument to _dl_profile_fixup.
compute_reloc_arg r3, ip
@ The third argument is the original return address, still in lr.
mov r2, lr
@ Compute the fourth argument, the La_arm_regs pointer.
add r3, sp, #PLTEXIT_ARGS
@ Compute the fifth argument, the address of the 'framesize'
@ out parameter, and store it at the top of the stack.
add ip, sp, #PLTENTER_FRAMESIZE
str ip, [sp]
@ Save away the first two arguments, which we will need
@ again for _dl_call_pltexit, below.
strd r0, r1, [sp, #PLTEXIT_ARGS]
@ This does the real work, and returns the real call target.
sfi_bl _dl_profile_fixup
@ The address to call is now in r0.
@ Check whether we're wrapping this function,
@ i.e. if the framesize out parameter is >= 0.
ldr ip, [sp, #PLTENTER_FRAMESIZE]
cmp ip, #0
bge 1f
cfi_remember_state
@ Save _dl_profile_fixup's return value: the real call target.
mov ip, r0
@ Restore the registers from the La_arm_regs (perhaps as modified
@ by audit modules' pltenter functions).
add r1, sp, #LA_ARM_REGS
sfi_sp sfi_breg r1, ldmia \B, {r0-r3, sp, lr}
cfi_def_cfa_offset (0)
cfi_restore (r0)
cfi_restore (r1)
cfi_restore (r2)
cfi_restore (r3)
cfi_restore (sp)
cfi_restore (lr)
@ Finally, jump to the newfound call target.
sfi_bx ip
1: cfi_restore_state
@ The new frame size is in ip.
@ Save the fp in the stack slot previously used for the fifth
@ argument to _dl_profile_fixup.
str fp, [sp]
cfi_offset (fp, 0)
@ Save the result of _dl_profile_fixup, the real call target.
@ We'll reuse the stack slot just used for the 'framesize'
@ out parameter to _dl_profile_fixup.
str r0, [sp, #PLTENTER_FRAMESIZE]
@ Stack layout:
@ fp + 264 call target
@ fp + 72 La_arm_regs
@ fp + 68 Saved two arguments to _dl_profile_fixup
@ fp + 64 saved fp
@ fp + 0 La_arm_retval
@ sp..fp copied incoming stack space (plus alignment)
@ For now, we only save the general purpose registers.
# define FP_LA_ARM_RETVAL 0
# define LA_ARM_RETVAL_SIZE (4 * (4 + 12))
# define FP_SAVED_FP LA_ARM_RETVAL_SIZE
# define FP_PLTEXIT_ARGS (FP_SAVED_FP + 4)
# define FP_LA_ARM_REGS (FP_PLTEXIT_ARGS + 8)
# define FP_CALL_TARGET (FP_LA_ARM_REGS + LA_ARM_REGS_SIZE)
# define FP_FRAMESIZE (FP_CALL_TARGET + 4)
sub fp, sp, #(FP_FRAMESIZE - FRAMESIZE)
cfi_def_cfa (fp, FP_FRAMESIZE)
sub r1, fp, ip
@ This doesn't need sfi_sp because we just include the
@ sandboxing mask along with the alignment mask.
bic sp, r1, #0xc000000f
@ Copy the stack arguments. The audit modules' pltenter
@ function(s) decided how much needs to be copied.
@ Load the sp as modified by pltenter functions, rather
@ than what we think the incoming sp was (fp + FP_FRAMESIZE).
sfi_breg fp, ldr r1, [\B, #(FP_LA_ARM_REGS + 16)]
mov r0, sp
mov r2, ip
sfi_bl memcpy
@ Load up the arguments from La_arm_regs and call the user's function.
sfi_breg fp, ldr ip, [\B, #FP_CALL_TARGET]
sfi_breg fp, ldrd r0, r1, [\B, #FP_LA_ARM_REGS]
sfi_breg fp, ldrd r2, r3, [\B, #(FP_LA_ARM_REGS + 8)]
sfi_blx ip
@ Stash the return value registers in La_arm_retval.
sfi_breg fp, strd r0, r1, [\B, #FP_LA_ARM_RETVAL]
sfi_breg fp, strd r2, r3, [\B, #(FP_LA_ARM_RETVAL + 8)]
@ Call pltexit. We saved the first two arguments earlier--they
@ are the same ones passed to _dl_profile_fixup. The latter two
@ arguments are La_arm_regs and La_arm_retval blocks, respectively.
sfi_breg fp, ldrd r0, r1, [\B, #FP_PLTEXIT_ARGS]
add r2, fp, #FP_LA_ARM_REGS
add r3, fp, #FP_LA_ARM_RETVAL
sfi_bl _dl_call_pltexit
@ Reload the saved return value registers for the caller.
sfi_breg fp, ldrd r0, r1, [\B, #FP_LA_ARM_RETVAL]
sfi_breg fp, ldrd r2, r3, [\B, #(FP_LA_ARM_RETVAL + 8)]
@ Unwind the frame.
sfi_sp mov sp, fp
cfi_def_cfa_register (sp)
ldr fp, [sp, #FP_SAVED_FP]
cfi_restore (fp)
@ Reload the lr and sp values from La_arm_regs, where they
@ might have been modified by pltenter functions, rather than
@ computing what we think the incoming value was.
ldr lr, [sp, #(FP_LA_ARM_REGS + 20)]
cfi_restore (lr)
sfi_sp ldr sp, [sp, #(FP_LA_ARM_REGS + 16)]
cfi_def_cfa_offset (0)
@ Finally, return to the caller.
sfi_bx lr
cfi_endproc
.size _dl_runtime_profile, .-_dl_runtime_profile
#endif
.previous

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/* Private jmp_buf-related definitions. NaCl/ARM version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _INCLUDE_BITS_SETJMP_H
#define _INCLUDE_BITS_SETJMP_H 1
#ifndef __ASSEMBLER__
/* Get the public declarations. */
# include <sysdeps/arm/bits/setjmp.h>
#endif
/* Register list for a ldm/stm instruction to load/store
the general registers from a __jmp_buf.
The generic ARM definition includes r9 (v6), which is not
permitted under NaCl. We add r3 even though it's call-clobbered,
just to keep the size the same as the generic version. */
#define JMP_BUF_REGLIST {r3, v1-v5, sl, fp}
/* Index of __jmp_buf where the sp register resides. */
#define __JMP_BUF_SP 0
#endif /* include/bits/setjmp.h */

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# Library=version Earliest symbol set (optional)
# --------------- ------------------------------
ld=ld-nacl-arm.so.1

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#include <sysdeps/nacl/start.c>

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sysdeps/arm/nacl/sysdep.h Normal file
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/* Assembler macros for ARM/NaCl.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _ARM_NACL_SYSDEP_H
#define _ARM_NACL_SYSDEP_H 1
#ifdef __ASSEMBLER__
# ifndef NO_THUMB
# define NO_THUMB
# endif
# define ARM_SFI_MACROS 1
/* The compiler driver primes the assembler with a standard set of
macros that includes sfi_breg and sfi_sp. The sfi_pld macro is
redundant with sfi_breg, but libc code uses it so as not to run
afoul of the assembler's parsing bug in versions prior to 2.23.2.
NaCl never uses an assembler that has this bug. */
.macro sfi_pld basereg, offset=#0
sfi_breg \basereg, pld [\basereg, \offset]
.endm
#endif
#include <sysdeps/arm/sysdep.h>
#ifdef __ASSEMBLER__
# undef eabi_fnstart
# define eabi_fnstart
# undef eabi_fnend
# define eabi_fnend
# undef eabi_save
# define eabi_save(...)
# undef eabi_cantunwind
# define eabi_cantunwind
# undef eabi_pad
# define eabi_pad(n)
/* NaCl has its own special way of getting the thread pointer. */
# undef GET_TLS
# define GET_TLS(tmp) ldr r0, [r9]
/* Rather than macroizing the code any more, we can just define a few
mnemonics as macros here. */
# define bl sfi_bl
# define bx sfi_bx
# define blx sfi_blx
# define bxeq sfi_bxeq /* Only condition now in use. */
#endif /* __ASSEMBLER__ */
#endif /* sysdep.h */

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#include <sysdeps/arm/nptl/tls.h>
#include <sysdeps/nacl/tls.h>

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nptl
posix
gnu

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# Makefile fragment for NaCl configurations.
# Copyright (C) 2015 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
# The libthread_db code does not compile for NaCl because there is no
# sys/procfs.h supplying the register layout types. But since libthread_db
# will probably never be useful for NaCl, just elide the directory rather
# than implementing stuff to make it compile (and never get used).
subdirs := $(filter-out nptl_db,$(subdirs))
sorted-subdirs := $(filter-out nptl_db,$(sorted-subdirs))
# The (required) --with-headers option to configure sets sysheaders to the
# location of the native_client/.. source directory. We'll get necessary
# headers directly from there.
naclsrc = $(sysheaders)/native_client/src
# How to find the directory containing this Makefile.
nacl = $(..)sysdeps/nacl
# Generate our bits/errno.h with the numbers from NaCl's sys/errno.h file.
nacl-errno = $(naclsrc)/trusted/service_runtime/include/sys/errno.h
bits-errno = $(common-objpfx)bits/errno.h
$(bits-errno): $(common-objpfx)stamp-errnos ;
$(common-objpfx)stamp-errnos: $(nacl)/errnos.awk $(..)manual/errno.texi \
$(nacl-errno)
$(make-target-directory)
$(AWK) -f $^ > $(bits-errno)-tmp
# Make it unwritable so noone will edit it by mistake.
-chmod a-w $(bits-errno)-tmp
$(move-if-change) $(bits-errno)-tmp $(bits-errno)
touch $@
common-generated += stamp-errnos bits/errno.h
before-compile += $(bits-errno)
# Massage NaCl's irt.h (and irt_dev.h) into something we can use.
# See irt.sed for details.
nacl-irt.h = $(common-objpfx)nacl-irt.h
$(nacl-irt.h): $(nacl)/irt.sed \
$(naclsrc)/untrusted/irt/irt.h \
$(naclsrc)/untrusted/irt/irt_dev.h
sed -f $^ > $@.new
mv -f $@.new $@
common-generated += nacl-irt.h
before-compile += $(nacl-irt.h)
$(common-objpfx)nacl-interfaces.v.i: $(nacl)/nacl-interfaces.mk.in \
$(nacl)/nacl-interface-list.h
-include $(common-objpfx)nacl-interfaces.v
common-generated += nacl-interfaces.v
before-compile += $(common-objpfx)nacl-interfaces.v
nacl-all-interfaces = $(nacl-mandatory-interfaces) $(nacl-optional-interfaces)
nacl-interface-routines = $(nacl-all-interfaces:%=nacl-interface-%)
define nacl-interface-table-command
(echo '#define INTERFACE_CATEGORY $1'; \
echo '#define INTERFACE_MODULE $(firstword $(subst -, ,$*))'; \
echo '#define INTERFACE_TYPE $(word 2,$(subst -, ,$*))'; \
echo '#define INTERFACE_STRING $(nacl-$*-string)'; \
echo '#include "nacl-interface-table.c"' \
) > $@T
mv -f $@T $@
endef
nacl-interface-pattern = $(objpfx)nacl-interface-%.c
$(nacl-mandatory-interfaces:%=$(nacl-interface-pattern)): \
$(nacl-interface-pattern): $(nacl)/Makefile $(common-objpfx)nacl-interfaces.v
$(make-target-directory)
$(call nacl-interface-table-command,mandatory)
$(nacl-optional-interfaces:%=$(nacl-interface-pattern)): \
$(nacl-interface-pattern): $(nacl)/Makefile $(common-objpfx)nacl-interfaces.v
$(make-target-directory)
$(call nacl-interface-table-command,optional)
nacl-routines-of = $(filter nacl-interface-$1-%,$(nacl-interface-routines))
# Run the NaCl code validator on binaries after we link them, so the
# build does not succeed with any binary that won't pass validation.
# Moving the file around makes sure that we don't leave a target
# appearing complete after it fails validation.
define after-link
mv -f $1 $1.prevalidation
$(nacl)/nacl-after-link.sh '${READELF}' $1.prevalidation
mv -f $1.prevalidation $1
endef
# The test wrapper script takes care of running things under NaCl's sel_ldr.
test-wrapper-env-only = $(nacl)/nacl-test-wrapper.sh --arch=$(nacl-sdk-arch)
test-wrapper-env = $(test-wrapper-env-only)
test-wrapper = $(test-wrapper-env) --
ifeq ($(subdir),csu)
sysdep_routines += nacl_interface_query \
nacl-interfaces $(call nacl-routines-of,libc)
endif
ifeq ($(subdir),elf)
sysdep-dl-routines += $(call nacl-routines-of,rtld)
sysdep-rtld-routines += nacl-interfaces $(call nacl-routines-of,rtld)
endif
ifeq ($(subdir),io)
sysdep_routines += xstatconv
endif
ifeq ($(subdir),nptl)
# We do not need any wrappers in libpthread.
libpthread-routines := $(filter-out ptw-%,$(libpthread-routines))
endif
ifeq ($(subdir),misc)
# We reuse the Linux file since the bits match. The file lives in the
# top-level source tree so we can use it without reference to any
# sysdeps/.../linux/ directories, but it's still a sysdeps decision to
# install it.
sysdep_headers += bits/mman-linux.h
endif

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inet
resolv
nss

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ld {
GLIBC_PRIVATE {
__nacl_irt_*;
}
}
libc {
GLIBC_2.22 {
nacl_interface_query;
}
GLIBC_PRIVATE {
# These are used by libpthread.
__libc_write;
__libc_open;
__libc_close;
__libc_fork;
__nacl_irt_*;
}
}

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/* _exit -- low-level program termination. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <stdlib.h>
#include <nacl-interfaces.h>
void
_exit (int status)
{
__nacl_irt_basic.exit (status);
/* That never returns unless something is severely and unrecoverably wrong.
If it ever does, try to make sure we crash. */
while (1)
__builtin_trap ();
}
libc_hidden_def (_exit)
weak_alias (_exit, _Exit)

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/* Check file access permission. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Test for access to FILE. */
int
__access (const char *file, int type)
{
return NACL_CALL (__nacl_irt_dev_filename.access (file, type), 0);
}
weak_alias (__access, access)

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#include <sysdeps/x86_64/backtrace.c>

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/* Directory entry structure `struct dirent'. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _DIRENT_H
# error "Never use <bits/dirent.h> directly; include <dirent.h> instead."
#endif
/* Note that __ino_t and __ino64_t are the same type.
Likewise __off_t and __off64_t are the same type. */
struct dirent
{
__ino_t d_ino; /* File serial number. */
__off_t d_off; /* File position of this entry. */
unsigned short int d_reclen; /* Length of the whole `struct dirent'. */
/* Only this member is in the POSIX standard. */
char d_name[256]; /* We must not include limits.h! */
};
#ifdef __USE_LARGEFILE64
/* This is completely identical to `struct dirent'. */
struct dirent64
{
__ino_t d_ino; /* File serial number. */
__off_t d_off; /* File position of this entry. */
unsigned short int d_reclen; /* Length of the whole `struct dirent'. */
/* Only this member is in the POSIX standard. */
char d_name[256]; /* We must not include limits.h! */
};
#endif
#define d_fileno d_ino /* Backwards compatibility. */
#define _DIRENT_HAVE_D_RECLEN 1
#define _DIRENT_MATCHES_DIRENT64 1

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/* O_*, F_*, FD_* bit values. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _FCNTL_H
#error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
#endif
/* File access modes for `open' and `fcntl'. */
#define O_RDONLY 0 /* Open read-only. */
#define O_WRONLY 1 /* Open write-only. */
#define O_RDWR 2 /* Open read/write. */
/* Bits OR'd into the second argument to open. */
#define O_CREAT 00100 /* Create file if it doesn't exist. */
#define O_EXCL 00200 /* Fail if file already exists. */
#define O_TRUNC 01000 /* Truncate file to zero length. */
#define O_NOCTTY 0 /* Don't assign a controlling terminal. */
#define O_ASYNC 020000 /* Send SIGIO to owner when data is ready. */
#define O_FSYNC 010000 /* Synchronous writes. */
#define O_SYNC O_FSYNC
#ifdef __USE_MISC
# define O_SHLOCK XXX /* Open with shared file lock. */
# define O_EXLOCK XXX /* Open with shared exclusive lock. */
#endif
#ifdef __USE_XOPEN2K8
# define O_DIRECTORY 00200000 /* Must be a directory. */
# define O_NOFOLLOW 00400000 /* Do not follow links. */
# define O_CLOEXEC 02000000 /* Set close_on_exec. */
#endif
#if defined __USE_POSIX199309 || defined __USE_UNIX98
# define O_DSYNC O_SYNC /* Synchronize data. */
# define O_RSYNC O_SYNC /* Synchronize read operations. */
#endif
/* All opens support large file sizes, so there is no flag bit for this. */
#ifdef __USE_LARGEFILE64
# define O_LARGEFILE 0
#endif
/* File status flags for `open' and `fcntl'. */
#define O_APPEND 02000 /* Writes append to the file. */
#define O_NONBLOCK 04000 /* Non-blocking I/O. */
#ifdef __USE_MISC
# define O_NDELAY O_NONBLOCK
#endif
#ifdef __USE_MISC
/* Bits in the file status flags returned by F_GETFL.
These are all the O_* flags, plus FREAD and FWRITE, which are
independent bits set by which of O_RDONLY, O_WRONLY, and O_RDWR, was
given to `open'. */
# define FREAD 1
# define FWRITE 2
/* Traditional BSD names the O_* bits. */
# define FASYNC O_ASYNC
# define FFSYNC O_FSYNC
# define FSYNC O_SYNC
# define FAPPEND O_APPEND
# define FNDELAY O_NDELAY
#endif
/* Mask for file access modes. This is system-dependent in case
some system ever wants to define some other flavor of access. */
#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
/* Values for the second argument to `fcntl'. */
#define F_DUPFD 0 /* Duplicate file descriptor. */
#define F_GETFD 1 /* Get file descriptor flags. */
#define F_SETFD 2 /* Set file descriptor flags. */
#define F_GETFL 3 /* Get file status flags. */
#define F_SETFL 4 /* Set file status flags. */
#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
#define F_GETOWN 5 /* Get owner (receiver of SIGIO). */
#define F_SETOWN 6 /* Set owner (receiver of SIGIO). */
#endif
#define F_GETLK 7 /* Get record locking info. */
#define F_SETLK 8 /* Set record locking info (non-blocking). */
#define F_SETLKW 9 /* Set record locking info (blocking). */
/* Not necessary, we always have 64-bit offsets. */
#define F_GETLK64 F_GETLK /* Get record locking info. */
#define F_SETLK64 F_SETLK /* Set record locking info (non-blocking). */
#define F_SETLKW64 F_SETLKW/* Set record locking info (blocking). */
#ifdef __USE_XOPEN2K8
# define F_DUPFD_CLOEXEC 12 /* Duplicate file descriptor with
close-on-exec set. */
#endif
/* File descriptor flags used with F_GETFD and F_SETFD. */
#define FD_CLOEXEC 1 /* Close on exec. */
#include <bits/types.h>
/* The structure describing an advisory lock. This is the type of the third
argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests. */
struct flock
{
short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
__off_t l_start; /* Offset where the lock begins. */
__off_t l_len; /* Size of the locked area; zero means until EOF. */
__pid_t l_pid; /* Process holding the lock. */
};
#ifdef __USE_LARGEFILE64
/* Note this matches struct flock exactly. */
struct flock64
{
short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
__off_t l_start; /* Offset where the lock begins. */
__off_t l_len; /* Size of the locked area; zero means until EOF. */
__pid_t l_pid; /* Process holding the lock. */
};
#endif
/* Values for the `l_type' field of a `struct flock'. */
#define F_RDLCK 1 /* Read lock. */
#define F_WRLCK 2 /* Write lock. */
#define F_UNLCK 3 /* Remove lock. */
/* Advice to `posix_fadvise'. */
#ifdef __USE_XOPEN2K
# define POSIX_FADV_NORMAL 0 /* No further special treatment. */
# define POSIX_FADV_RANDOM 1 /* Expect random page references. */
# define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
# define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
# define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
# define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
#endif

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/* Minimum guaranteed maximum values for system limits. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#define NAME_MAX 255
#define PATH_MAX 4096
#define NGROUPS_MAX 65536
/* The number of data keys per process. */
#define _POSIX_THREAD_KEYS_MAX 128
/* This is the value this implementation supports. */
#define PTHREAD_KEYS_MAX 1024
/* Controlling the iterations of destructors for thread-specific data. */
#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
/* Number of iterations this implementation does. */
#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS
/* The number of threads per process. */
#define _POSIX_THREAD_THREADS_MAX 64
/* We have no predefined limit on the number of threads. */
#undef PTHREAD_THREADS_MAX
/* Maximum amount by which a process can descrease its asynchronous I/O
priority level. */
#define AIO_PRIO_DELTA_MAX 20
/* Minimum size for a thread. We are free to choose a reasonable value. */
#define PTHREAD_STACK_MIN 131072
/* Maximum number of timer expiration overruns. */
#define DELAYTIMER_MAX 2147483647
/* Maximum tty name length. */
#define TTY_NAME_MAX 32
/* Maximum login name length. This is arbitrary. */
#define LOGIN_NAME_MAX 256
/* Maximum host name length. */
#define HOST_NAME_MAX 64
/* Maximum message queue priority level. */
#define MQ_PRIO_MAX 32768
/* Maximum value the semaphore can have. */
#define SEM_VALUE_MAX (2147483647)

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/* Definitions for POSIX memory map interface. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_MMAN_H
# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
#endif
/* NaCl uses the Linux bits for this. */
#include <bits/mman-linux.h>

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/* Old-style Unix parameters and limits. NaCl version.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_PARAM_H
# error "Never use <bits/param.h> directly; include <sys/param.h> instead."
#endif
#define EXEC_PAGESIZE 0x10000

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/* Define POSIX options for NaCl.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#ifndef _BITS_POSIX_OPT_H
#define _BITS_POSIX_OPT_H 1
/* Job control is supported. (Not really, but the APIs exist.) */
#define _POSIX_JOB_CONTROL 1
/* Processes have a saved set-user-ID and a saved set-group-ID. */
#define _POSIX_SAVED_IDS 1
/* Priority scheduling is supported. ??? */
#define _POSIX_PRIORITY_SCHEDULING 200809L
/* Synchronizing file data is supported. ??? */
#define _POSIX_SYNCHRONIZED_IO 200809L
/* The fsync function is present. */
#define _POSIX_FSYNC 200809L
/* Mapping of files to memory is supported. */
#define _POSIX_MAPPED_FILES 200809L
/* Locking of all memory is not supported. */
#define _POSIX_MEMLOCK -1
/* Locking of ranges of memory is not supported. */
#define _POSIX_MEMLOCK_RANGE -1
/* Setting of memory protections is supported. */
#define _POSIX_MEMORY_PROTECTION 200809L
/* Some filesystems allow all users to change file ownership. */
#define _POSIX_CHOWN_RESTRICTED 0
/* `c_cc' member of 'struct termios' structure can be disabled by
using the value _POSIX_VDISABLE. ??? */
#define _POSIX_VDISABLE '\0'
/* Filenames are not silently truncated. */
#define _POSIX_NO_TRUNC 1
/* X/Open realtime support is not fully available. This requires the
following set of POSIX.1 features, not all of which NaCl supports:
_POSIX_FSYNC
_POSIX_MEMLOCK
_POSIX_MEMLOCK_RANGE
_POSIX_MESSAGE_PASSING
_POSIX_PRIORITIZED_IO
_POSIX_PRIORITY_SCHEDULING
_POSIX_SHARED_MEMORY_OBJECTS
_POSIX_SYNCHRONIZED_IO
*/
#define _XOPEN_REALTIME -1
/* X/Open thread realtime support is not available. This requires the
following set of POSIX.1 features, none of which NaCl supports:
_POSIX_THREAD_PRIO_INHERIT
_POSIX_THREAD_PRIO_PROTECT
_POSIX_THREAD_PRIORITY_SCHEDULING
_POSIX_THREAD_ROBUST_PRIO_INHERIT
_POSIX_THREAD_ROBUST_PRIO_PROTECT
*/
#define _XOPEN_REALTIME_THREADS -1
/* XPG4.2 shared memory is not supported.
??? What is this? shm* interfaces?
*/
#define _XOPEN_SHM -1
/* POSIX threads are supported. */
#define _POSIX_THREADS 200809L
/* We have the reentrant functions described in POSIX. */
#define _POSIX_REENTRANT_FUNCTIONS 1
#define _POSIX_THREAD_SAFE_FUNCTIONS 200809L
/* We do not provide priority scheduling for threads. */
#define _POSIX_THREAD_PRIORITY_SCHEDULING -1
/* We support user-defined stack sizes. */
#define _POSIX_THREAD_ATTR_STACKSIZE 200809L
/* We support user-defined stacks. */
#define _POSIX_THREAD_ATTR_STACKADDR 200809L
/* We do not support priority inheritence. */
#define _POSIX_THREAD_PRIO_INHERIT -1
/* We do not support priority protection. */
#define _POSIX_THREAD_PRIO_PROTECT -1
#ifdef __USE_XOPEN2K8
/* We do not support priority inheritence for robust mutexes. */
# define _POSIX_THREAD_ROBUST_PRIO_INHERIT -1
/* We do not support priority protection for robust mutexes. */
# define _POSIX_THREAD_ROBUST_PRIO_PROTECT -1
#endif
/* We support POSIX.1b semaphores. */
#define _POSIX_SEMAPHORES 200809L
/* Real-time signals are supported. ??? */
#define _POSIX_REALTIME_SIGNALS 200809L
/* We support asynchronous I/O. */
#define _POSIX_ASYNCHRONOUS_IO 200809L
#define _POSIX_ASYNC_IO 1
/* Alternative name for Unix98. */
#define _LFS_ASYNCHRONOUS_IO 1
/* Support for prioritization is not available. */
#define _POSIX_PRIORITIZED_IO -1
/* The LFS support in asynchronous I/O is also available. */
#define _LFS64_ASYNCHRONOUS_IO 1
/* The rest of the LFS is also available. */
#define _LFS_LARGEFILE 1
#define _LFS64_LARGEFILE 1
#define _LFS64_STDIO 1
/* POSIX shared memory objects are implemented. */
#define _POSIX_SHARED_MEMORY_OBJECTS 200809L
/* Process CPU-time clocks are not supported. */
#define _POSIX_CPUTIME -1
/* Thread CPU-time locks are supported. */
#define _POSIX_THREAD_CPUTIME 200809L
/* GNU libc provides regular expression handling. */
#define _POSIX_REGEXP 1
/* Reader/Writer locks are available. */
#define _POSIX_READER_WRITER_LOCKS 200809L
/* We have a POSIX shell. */
#define _POSIX_SHELL 1
/* We support the Timeouts option. */
#define _POSIX_TIMEOUTS 200809L
/* We support spinlocks. */
#define _POSIX_SPIN_LOCKS 200809L
/* The `spawn' function family is supported. */
#define _POSIX_SPAWN 200809L
/* We have POSIX timers. */
#define _POSIX_TIMERS 200809L
/* The barrier functions are available. */
#define _POSIX_BARRIERS 200809L
/* POSIX message queues are not available. */
#define _POSIX_MESSAGE_PASSING -1
/* Thread process-shared synchronization is not supported. */
#define _POSIX_THREAD_PROCESS_SHARED -1
/* The monotonic clock is available. */
#define _POSIX_MONOTONIC_CLOCK 200809L
/* The clock selection interfaces are available. ??? Actually only
clock_nanosleep works, and pthread_condattr_setclock does not. */
#define _POSIX_CLOCK_SELECTION 200809L
/* Advisory information interfaces are available. */
#define _POSIX_ADVISORY_INFO 200809L
/* IPv6 support is available. */
#define _POSIX_IPV6 200809L
/* Raw socket support is available. */
#define _POSIX_RAW_SOCKETS 200809L
/* We have at least one terminal. */
#define _POSIX2_CHAR_TERM 200809L
/* Neither process nor thread sporadic server interfaces is available. */
#define _POSIX_SPORADIC_SERVER -1
#define _POSIX_THREAD_SPORADIC_SERVER -1
/* trace.h is not available. */
#define _POSIX_TRACE -1
#define _POSIX_TRACE_EVENT_FILTER -1
#define _POSIX_TRACE_INHERIT -1
#define _POSIX_TRACE_LOG -1
/* Typed memory objects are not available. */
#define _POSIX_TYPED_MEMORY_OBJECTS -1
#endif /* bits/posix_opt.h */

147
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/* 'struct stat' and related definitions. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#if !defined _SYS_STAT_H && !defined _FCNTL_H
# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
#endif
#ifndef _BITS_STAT_H
#define _BITS_STAT_H 1
/* Versions of the `struct stat' data structure. */
#define _STAT_VER_NACL 0
#define _STAT_VER_LINUX 1
#define _STAT_VER _STAT_VER_LINUX
struct stat
{
__dev_t st_dev; /* Device. */
__ino_t st_ino; /* File serial number. */
__nlink_t st_nlink; /* Link count. */
__mode_t st_mode; /* File mode. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
int __pad0;
__dev_t st_rdev; /* Device number, if device. */
__off_t st_size; /* Size of file, in bytes. */
__blksize_t st_blksize; /* Optimal block size for I/O. */
__blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
#if defined __USE_MISC || defined __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
#else
__time_t st_atime; /* Time of last access. */
__uint64_t st_atimensec; /* Nsecs of last access. */
__time_t st_mtime; /* Time of last modification. */
__uint64_t st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
__uint64_t st_ctimensec; /* Nsecs of last status change. */
#endif
__int64_t __unused[3];
};
#ifdef __USE_LARGEFILE64
/* Note stat64 has the same shape as stat for NaCl. */
struct stat64
{
__dev_t st_dev; /* Device. */
__ino_t st_ino; /* File serial number. */
__nlink_t st_nlink; /* Link count. */
__mode_t st_mode; /* File mode. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
int __pad0;
__dev_t st_rdev; /* Device number, if device. */
__off_t st_size; /* Size of file, in bytes. */
__blksize_t st_blksize; /* Optimal block size for I/O. */
__blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
# if defined __USE_MISC || defined __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
# else
__time_t st_atime; /* Time of last access. */
__uint64_t st_atimensec; /* Nsecs of last access. */
__time_t st_mtime; /* Time of last modification. */
__uint64_t st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
__uint64_t st_ctimensec; /* Nsecs of last status change. */
# endif
__int64_t __unused[3];
};
#endif
/* Tell code we have these members. */
#define _STATBUF_ST_BLKSIZE 1
#define _STATBUF_ST_RDEV 1
/* Nanosecond resolution time values are supported. */
#define _STATBUF_ST_NSEC 1
/* Encoding of the file mode. */
#define __S_IFMT 0170000 /* These bits determine file type. */
/* File types. */
#define __S_IFDIR 0040000 /* Directory. */
#define __S_IFCHR 0020000 /* Character device. */
#define __S_IFBLK 0060000 /* Block device. */
#define __S_IFREG 0100000 /* Regular file. */
#define __S_IFIFO 0010000 /* FIFO. */
#define __S_IFLNK 0120000 /* Symbolic link. */
#define __S_IFSOCK 0140000 /* Socket. */
/* POSIX.1b objects. Note that these macros always evaluate to zero. But
they do it by enforcing the correct use of the macros. */
#define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
/* Protection bits. */
#define __S_ISUID 04000 /* Set user ID on execution. */
#define __S_ISGID 02000 /* Set group ID on execution. */
#define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
#define __S_IREAD 0400 /* Read by owner. */
#define __S_IWRITE 0200 /* Write by owner. */
#define __S_IEXEC 0100 /* Execute by owner. */
#ifdef __USE_ATFILE
/* XXX missing: UTIME_NOW, UTIME_OMIT */
#endif
#endif /* bits/stat.h */

71
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/* bits/typesizes.h -- underlying types for *_t. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _BITS_TYPES_H
# error "Never include <bits/typesizes.h> directly; use <sys/types.h> instead."
#endif
#ifndef _BITS_TYPESIZES_H
#define _BITS_TYPESIZES_H 1
/* See <bits/types.h> for the meaning of these macros. This file exists so
that <bits/types.h> need not vary across different GNU platforms. */
#define __DEV_T_TYPE __UQUAD_TYPE
#define __UID_T_TYPE __U32_TYPE
#define __GID_T_TYPE __U32_TYPE
#define __INO_T_TYPE __UQUAD_TYPE
#define __INO64_T_TYPE __INO_T_TYPE
#define __MODE_T_TYPE __U32_TYPE
#define __NLINK_T_TYPE __UWORD_TYPE
#define __OFF_T_TYPE __SQUAD_TYPE
#define __OFF64_T_TYPE __OFF_T_TYPE
#define __PID_T_TYPE __S32_TYPE
#define __RLIM_T_TYPE __UQUAD_TYPE
#define __RLIM64_T_TYPE __RLIM_T_TYPE
#define __BLKCNT_T_TYPE __SQUAD_TYPE
#define __BLKCNT64_T_TYPE __BLKCNT_T_TYPE
#define __FSBLKCNT_T_TYPE __UQUAD_TYPE
#define __FSBLKCNT64_T_TYPE __FSBLKCNT_T_TYPE
#define __FSFILCNT_T_TYPE __UQUAD_TYPE
#define __FSFILCNT64_T_TYPE __FSFILCNT_T_TYPE
#define __FSWORD_T_TYPE __SWORD_TYPE
#define __ID_T_TYPE __U32_TYPE
#define __CLOCK_T_TYPE __SQUAD_TYPE
#define __TIME_T_TYPE __SQUAD_TYPE
#define __USECONDS_T_TYPE __U32_TYPE
#define __SUSECONDS_T_TYPE __S32_TYPE
#define __DADDR_T_TYPE __S32_TYPE
#define __KEY_T_TYPE __S32_TYPE
#define __CLOCKID_T_TYPE __S32_TYPE
#define __TIMER_T_TYPE void *
#define __BLKSIZE_T_TYPE __SLONGWORD_TYPE
#define __FSID_T_TYPE struct { int __val[2]; }
#define __SSIZE_T_TYPE __SWORD_TYPE
#define __SYSCALL_SLONG_TYPE __SLONGWORD_TYPE
#define __SYSCALL_ULONG_TYPE __ULONGWORD_TYPE
/* All our foo64_t types match their foo_t counterparts. */
#define __OFF_T_MATCHES_OFF64_T 1
#define __INO_T_MATCHES_INO64_T 1
/* Number of descriptors that can fit in an `fd_set'. */
#define __FD_SETSIZE 1024
#endif /* bits/typesizes.h */

93
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/* brk -- Adjust the "break" at the end of initial data. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <libc-internal.h>
#include <stdint.h>
#include <sys/mman.h>
#include <sys/param.h>
#include <unistd.h>
/* sbrk.c expects this. */
void *__curbrk;
static uintptr_t
page_above (void *addr)
{
return ALIGN_UP ((uintptr_t) addr, EXEC_PAGESIZE);
}
/* Set the end of the process's data space to ADDR.
Return 0 if successful, -1 if not. */
int
__brk (void *addr)
{
/* The NaCl sysbrk call is deprecated, so we do not use it here. Other
libc code expects that __sbrk can be used at least a little bit, so
rather than a plain stub we have a minimal __brk implementation here.
It just uses mmap/munmap to grow or shrink the break area, punting as
soon as mmap fails to use the same contiguous area. */
if (__glibc_unlikely (__curbrk == NULL))
{
/* This is the first call. We must initialize the record
of the current position. It starts out at the end of the
main program's data segment. */
/* XXX dynamic case??? */
extern char _end[];
__curbrk = _end;
}
if (__glibc_unlikely (addr == NULL))
/* This is a call just to ensure that __curbrk is set up. */
return 0;
uintptr_t old_limit = page_above (__curbrk);
uintptr_t new_limit = page_above (addr);
if (old_limit > new_limit)
{
/* We're shrinking the old heap enough to release some pages. */
if (__munmap ((void *) new_limit, old_limit - new_limit) != 0)
return -1;
}
else if (old_limit < new_limit)
{
/* We're growing the old heap enough to need some more pages.
See if they are available. */
void *new_space = __mmap ((void *) old_limit, new_limit - old_limit,
PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
if (new_space != (void *) old_limit)
{
if (new_space != MAP_FAILED)
{
/* mmap chose some different place for the pages
because the contiguous area was not available.
Oh well. We can't use that. */
__munmap (new_space, new_limit - old_limit);
__set_errno (ENOMEM);
}
return -1;
}
}
__curbrk = addr;
return 0;
}
weak_alias (__brk, brk)

28
sysdeps/nacl/chdir.c Normal file
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/* Change current working directory. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Change the current directory to PATH. */
int
__chdir (const char *path)
{
return NACL_CALL (__nacl_irt_dev_filename.chdir (path), 0);
}
weak_alias (__chdir, chdir)

23
sysdeps/nacl/check_fds.c Normal file
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/* Check inherited file descriptors for sanity at startup. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* Nothing to do here. */
void
__libc_check_standard_fds (void)
{
}

28
sysdeps/nacl/chmod.c Normal file
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/* Change a file's permissions. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Change the protections of FILE to MODE. */
int
__chmod (const char *file, mode_t mode)
{
return NACL_CALL (__nacl_irt_dev_filename.chmod (file, mode), 0);
}
weak_alias (__chmod, chmod)

29
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/* Return the time used by the program so far. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <time.h>
#include <nacl-interfaces.h>
/* Return the time used by the program so far (user time + system time). */
clock_t
clock (void)
{
nacl_abi_clock_t result;
return NACL_CALL (__nacl_irt_basic.clock (&result), result);
}

28
sysdeps/nacl/clock_getres.c Normal file
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/* Get the resolution of a clock. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <time.h>
#include <nacl-interfaces.h>
/* Get resolution of clock. */
int
__clock_getres (clockid_t clock_id, struct timespec *res)
{
return NACL_CALL (__nacl_irt_clock.clock_getres (clock_id, res), 0);
}
weak_alias (__clock_getres, clock_getres)

29
sysdeps/nacl/clock_gettime.c Normal file
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/* Get the current value of a clock. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <time.h>
#include <nacl-interfaces.h>
/* Get current value of CLOCK and store it in TP. */
int
__clock_gettime (clockid_t clock_id, struct timespec *tp)
{
return NACL_CALL (__nacl_irt_clock.clock_gettime (clock_id, tp), 0);
}
libc_hidden_def (__clock_gettime)
weak_alias (__clock_gettime, clock_gettime)

31
sysdeps/nacl/close.c Normal file
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/* Close a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Close the file descriptor FD. */
int
__close (int fd)
{
return NACL_CALL (__nacl_irt_fdio.close (fd), 0);
}
libc_hidden_def (__close)
strong_alias (__close, __libc_close)
weak_alias (__close, close)

18
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# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
# Local configure fragment for sysdeps/nacl.
nacl_probe_file=native_client/src/trusted/service_runtime/include/sys/errno.h
# sysheaders is set by the --with-headers=... option to configure.
# For NaCl, we require that the option be given and point to the
# native_client/.. source tree directory.
test -n "$sysheaders" || {
as_fn_error $? "must supply --with-headers=DIR with native_client source tree" "$LINENO" 5
}
test -r "$sysheaders/$nacl_probe_file" || {
as_fn_error $? "$sysheaders does not appear to be a native_client source tree" "$LINENO" 5
}
# nscd is extremely useless in the NaCl context.
build_nscd=no
use_nscd=no

18
sysdeps/nacl/configure.ac Normal file
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@ -0,0 +1,18 @@
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/nacl.
nacl_probe_file=native_client/src/trusted/service_runtime/include/sys/errno.h
# sysheaders is set by the --with-headers=... option to configure.
# For NaCl, we require that the option be given and point to the
# native_client/.. source tree directory.
test -n "$sysheaders" || {
AC_MSG_ERROR([must supply --with-headers=DIR with native_client source tree])
}
test -r "$sysheaders/$nacl_probe_file" || {
AC_MSG_ERROR([$sysheaders does not appear to be a native_client source tree])
}
# nscd is extremely useless in the NaCl context.
build_nscd=no
use_nscd=no

46
sysdeps/nacl/createthread.c Normal file
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/* Low-level thread creation for NPTL. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <nacl-interfaces.h>
/* See the comments in pthread_create.c for the requirements for these
two macros and the create_thread function. */
#define START_THREAD_DEFN \
static void __attribute__ ((noreturn)) start_thread (void)
#define START_THREAD_SELF THREAD_SELF
/* pthread_create.c defines this using START_THREAD_DEFN
We need a forward declaration here so we can take its address. */
static void start_thread (void) __attribute__ ((noreturn));
static int
create_thread (struct pthread *pd, const struct pthread_attr *attr,
bool stopped_start, STACK_VARIABLES_PARMS, bool *thread_ran)
{
pd->stopped_start = stopped_start;
if (__glibc_unlikely (stopped_start))
/* We make sure the thread does not run far by forcing it to get a
lock. We lock it here too so that the new thread cannot continue
until we tell it to. */
lll_lock (pd->lock, LLL_PRIVATE);
TLS_DEFINE_INIT_TP (tp, pd);
return __nacl_irt_thread.thread_create (&start_thread, stackaddr, tp);
}

238
sysdeps/nacl/dl-map-segments.h Normal file
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/* Map in a shared object's segments. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <assert.h>
#include <dl-load.h>
#include <errno.h>
#include <stdbool.h>
#include <unistd.h>
#include <libc-internal.h>
/* This is basically pread, but with iteration after short reads. */
static bool
read_in_data (int fd, void *data, size_t len, off_t pos)
{
if (__glibc_unlikely (__lseek (fd, pos, SEEK_SET) == (off_t) -1))
return true;
while (len > 0)
{
ssize_t n = __read (fd, data, len);
if (__glibc_unlikely (n < 0))
return true;
if (__glibc_unlikely (n == 0))
{
errno = EFTYPE;
return true;
}
data += n;
len -= n;
}
return false;
}
static const char *
_dl_map_segments (struct link_map *l, int fd,
const ElfW(Ehdr) *header, int type,
const struct loadcmd loadcmds[], size_t nloadcmds,
const size_t maplength, bool has_holes,
struct link_map *loader)
{
if (__builtin_expect (type, ET_DYN) == ET_DYN)
{
/* This is a position-independent shared object. Let the system
choose where to place it.
As a refinement, sometimes we have an address that we would
prefer to map such objects at; but this is only a preference,
the OS can do whatever it likes. */
ElfW(Addr) mappref
= (ELF_PREFERRED_ADDRESS (loader, maplength,
loadcmds[0].mapstart & GLRO(dl_use_load_bias))
- MAP_BASE_ADDR (l));
uintptr_t mapstart;
if (__glibc_likely (loadcmds[0].prot & PROT_EXEC))
{
/* When there is a code segment, we must use the
allocate_code_data interface to choose a location. */
uintptr_t code_size = loadcmds[0].allocend - loadcmds[0].mapstart;
uintptr_t data_offset;
size_t data_size;
if (__glibc_likely (nloadcmds > 1))
{
data_offset = loadcmds[1].mapstart - loadcmds[0].mapstart;
data_size = ALIGN_UP (maplength - data_offset,
GLRO(dl_pagesize));
}
else
{
data_offset = 0;
data_size = 0;
}
int error = __nacl_irt_code_data_alloc.allocate_code_data
(mappref, code_size, data_offset, data_size, &mapstart);
if (__glibc_unlikely (error))
{
errno = error;
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
}
}
else
{
/* With no code pages involved, plain mmap works fine. */
void *mapped = __mmap ((void *) mappref, maplength,
PROT_NONE, MAP_ANON, -1, 0);
if (__glibc_unlikely (mapped == MAP_FAILED))
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
mapstart = (uintptr_t) mapped;
}
l->l_addr = mapstart - loadcmds[0].mapstart;
}
/* Remember which part of the address space this object uses. */
l->l_map_start = loadcmds[0].mapstart + l->l_addr;
l->l_map_end = l->l_map_start + maplength;
l->l_contiguous = !has_holes;
/* Now actually map (or read) in each segment. */
for (const struct loadcmd *c = loadcmds; c < &loadcmds[nloadcmds]; ++c)
if (__glibc_likely (c->mapend > c->mapstart))
{
/* Unlike POSIX mmap, NaCl's mmap does not reliably handle COW
faults in the remainder of the final partial page. So to get
the expected behavior for the unaligned boundary between data
and bss, it's necessary to allocate the final partial page of
data as anonymous memory rather than mapping it from the file. */
size_t maplen = c->mapend - c->mapstart;
if (c->mapend > c->dataend && c->allocend > c->dataend)
maplen = (c->dataend & -GLRO(dl_pagesize)) - c->mapstart;
/* Map the segment contents from the file. */
if (__glibc_unlikely (__mmap ((void *) (l->l_addr + c->mapstart),
maplen, c->prot,
MAP_FIXED|MAP_COPY|MAP_FILE,
fd, c->mapoff)
== MAP_FAILED))
{
switch (errno)
{
case EINVAL:
case ENOTSUP:
case ENOSYS:
break;
default:
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
}
/* No mmap support for this file. */
if (c->prot & PROT_EXEC)
{
/* Read the data into a temporary buffer. */
const size_t len = c->mapend - c->mapstart;
void *data = __mmap (NULL, len, PROT_READ | PROT_WRITE,
MAP_ANON|MAP_PRIVATE, -1, 0);
if (__glibc_unlikely (data == MAP_FAILED))
return DL_MAP_SEGMENTS_ERROR_MAP_ZERO_FILL;
if (read_in_data (fd, data, len, c->mapoff))
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
/* Now validate and install the code. */
int error = __nacl_irt_dyncode.dyncode_create
((void *) (l->l_addr + c->mapstart), data, len);
__munmap (data, len);
if (__glibc_unlikely (error))
{
errno = error;
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
}
}
else
{
/* Allocate the pages. */
if (__mmap ((void *) (l->l_addr + c->mapstart),
c->mapend - c->mapstart, c->prot | PROT_WRITE,
MAP_FIXED|MAP_ANON|MAP_PRIVATE, -1, 0)
== MAP_FAILED)
return DL_MAP_SEGMENTS_ERROR_MAP_ZERO_FILL;
/* Now read in the data. */
if (read_in_data (fd, (void *) (l->l_addr + c->mapstart),
c->dataend - c->mapstart, c->mapoff))
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
/* Now that we've filled the pages, reset the page
protections to what they should be. */
if (!(c->prot & PROT_WRITE)
&& __mprotect ((void *) (l->l_addr + c->mapstart),
c->mapend - c->mapstart, c->prot) < 0)
return DL_MAP_SEGMENTS_ERROR_MPROTECT;
}
}
else if (c->allocend > c->dataend)
{
/* Extra zero pages should appear at the end of this segment,
after the data mapped from the file. */
uintptr_t allocend = c->mapend;
if (c->mapend > c->dataend)
{
/* The final data page was partial. So we didn't map it in.
Instead, we must allocate an anonymous page to fill. */
if (c->prot & PROT_WRITE)
/* Do the whole allocation right here. */
allocend = c->allocend;
if (__mmap ((void *) (l->l_addr + c->mapstart + maplen),
allocend - (c->mapstart + maplen), c->prot,
MAP_FIXED|MAP_ANON|MAP_PRIVATE, -1, 0)
== MAP_FAILED)
return DL_MAP_SEGMENTS_ERROR_MAP_ZERO_FILL;
if (read_in_data (fd,
(void *) (l->l_addr + c->mapstart + maplen),
c->dataend & (GLRO(dl_pagesize) - 1),
c->mapoff + maplen))
return DL_MAP_SEGMENTS_ERROR_MAP_SEGMENT;
/* Now that we've filled the page, reset its
protections to what they should be. */
if (!(c->prot & PROT_WRITE)
&& __mprotect ((void *) (l->l_addr + c->mapstart + maplen),
c->mapend - (c->mapstart + maplen),
c->prot) < 0)
return DL_MAP_SEGMENTS_ERROR_MPROTECT;
}
/* Now allocate the pure zero-fill pages. */
if (allocend < c->allocend
&& (__mmap ((void *) (l->l_addr + c->mapstart + allocend),
c->allocend - (c->mapstart + allocend), c->prot,
MAP_FIXED|MAP_ANON|MAP_PRIVATE, -1, 0)
== MAP_FAILED))
return DL_MAP_SEGMENTS_ERROR_MAP_ZERO_FILL;
}
_dl_postprocess_loadcmd (l, header, c);
}
/* Notify ELF_PREFERRED_ADDRESS that we have to load this one
fixed. */
ELF_FIXED_ADDRESS (loader, c->mapstart);
return NULL;
}

34
sysdeps/nacl/dl-osinfo.h Normal file
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/* DL_SYSDEP_OSCHECK macro for NaCl.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _DL_OSINFO_H
#define _DL_OSINFO_H 1
#include <sysdeps/generic/dl-osinfo.h>
#include "nacl-interfaces.h"
#ifndef SHARED
/* This doesn't really have anything to do with the purpose for
which this macro is used in Linux configurations. But it is
called at the right place in __libc_start_main. */
# define DL_SYSDEP_OSCHECK(fatal) __nacl_initialize_interfaces ()
#endif
#endif /* dl-osinfo.h */

89
sysdeps/nacl/dl-sysdep.c Normal file
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@ -0,0 +1,89 @@
/* Operating system support for run-time dynamic linker. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifdef SHARED
# include <assert.h>
# include <ldsodefs.h>
# include <stdint.h>
# include <nacl-interfaces.h>
/* NaCl's elf32.h is incompatible with the real <elf.h>. */
# define NATIVE_CLIENT_SRC_INCLUDE_ELF32_H_
# include <native_client/src/untrusted/nacl/nacl_startup.h>
/* The RTLD_START code sets up the pointer that gets to these
macros as COOKIE to point to two words:
[0] the argument to the entry point from the system (see nacl_startup.h)
[1] the stack base
*/
# define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \
do { \
uint32_t *_info = ((void **) (cookie))[0]; \
(argc) = nacl_startup_argc (_info); \
(argv) = nacl_startup_argv (_info); \
(envp) = nacl_startup_envp (_info); \
(auxp) = nacl_startup_auxv (_info); \
} while (0)
# define DL_STACK_END(cookie) (((void **) (cookie))[1])
/* This is called from the entry point (_start), defined by the RTLD_START
macro in the machine-specific dl-machine.h file. At this point, dynamic
linking has been completed and the first argument is the application's
entry point. */
attribute_hidden internal_function __attribute__ ((noreturn))
void
_dl_start_user (void (*user_entry) (uint32_t info[]), uint32_t info[])
{
if (_dl_skip_args > 0)
{
/* There are some arguments that the user program should not see.
Just slide up the INFO pointer so its NACL_STARTUP_ARGV points
to what should now be argv[0], and copy back the earlier fields. */
assert (nacl_startup_argc (info) >= _dl_skip_args);
assert (NACL_STARTUP_ARGV == 3);
uint32_t envc = info[NACL_STARTUP_ENVC];
uint32_t argc = info[NACL_STARTUP_ARGC];
info += _dl_skip_args;
info[NACL_STARTUP_ENVC] = envc;
info[NACL_STARTUP_ARGC] = argc - _dl_skip_args;
}
/* Pass our finalizer function to the user. */
info[NACL_STARTUP_FINI] = (uintptr_t) &_dl_fini;
/* Run initializers. */
_dl_init (GL(dl_ns)[0]._ns_loaded,
nacl_startup_argc (info),
nacl_startup_argv (info),
nacl_startup_envp (info));
/* Call the user's entry point. This should never return. */
(*user_entry) (info);
/* Fail clearly just in case it did return. */
__builtin_trap ();
}
# define DL_SYSDEP_INIT __nacl_initialize_interfaces ()
#endif /* SHARED */
#include <elf/dl-sysdep.c>

30
sysdeps/nacl/dl-sysdep.h Normal file
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@ -0,0 +1,30 @@
/* System-specific settings for dynamic linker code. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* No multiple inclusion protection needed here because it's just macros.
We don't want to use _DL_SYSDEP_H in case we are #include_next'd. */
#include_next <dl-sysdep.h>
/* We use AT_SYSINFO for a different purpose than Linux does,
but we too want to store its value. */
#define NEED_DL_SYSINFO 1
#define DL_SYSINFO_DEFAULT 0
/* sysdeps/arm/dl-sysdep.h defines this but it does not apply to NaCl. */
#undef DL_ARGV_NOT_RELRO

65
sysdeps/nacl/dl-unmap-segments.h Normal file
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@ -0,0 +1,65 @@
/* Unmap a shared object's segments. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _DL_UNMAP_SEGMENTS_H
#define _DL_UNMAP_SEGMENTS_H 1
#include <link.h>
#include <sys/mman.h>
/* There is always a big gap between the executable segment and the data
segments. Other code segments and data pages lie in there. So we must
unmap each segment individually (except for a codeless module). */
static void __always_inline
_dl_unmap_segments (struct link_map *l)
{
if (l->l_contiguous)
/* Simple case. */
__munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start);
else
{
/* Normally l_phdr points into the RODATA segment, which we will
unmap in one iteration of the loop. So we cannot use it directly
throughout. */
struct { ElfW(Addr) start, end; } segments[l->l_phnum], *seg = segments;
for (const ElfW(Phdr) *ph = l->l_phdr; ph < &l->l_phdr[l->l_phnum]; ++ph)
if (ph->p_type == PT_LOAD)
{
seg->start = (l->l_addr + ph->p_vaddr) & -GLRO(dl_pagesize);
seg->end = (l->l_addr + ph->p_vaddr + ph->p_memsz
+ GLRO(dl_pagesize) - 1) & -GLRO(dl_pagesize);
if (seg > segments && seg[-1].end == seg->start)
/* Coalesce two adjacent segments into one munmap call. */
seg[-1].end = seg->end;
else
++seg;
}
do
{
--seg;
__munmap ((void *) seg->start, seg->end - seg->start);
}
while (seg > segments);
}
}
#endif /* dl-unmap-segments.h */

45
sysdeps/nacl/dl-writev.h Normal file
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@ -0,0 +1,45 @@
/* Message-writing for the dynamic linker. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/uio.h>
#include <nacl-interfaces.h>
/* This is used from only one place: dl-misc.c:_dl_debug_vdprintf.
Hence it's in a header with the expectation it will be inlined.
This is writev, but with a constraint added and others loosened:
1. Under RTLD_PRIVATE_ERRNO, it must not clobber the private errno
when another thread holds the dl_load_lock.
2. It is not obliged to detect and report errors at all.
3. It's not really obliged to deliver a single atomic write
(though it may be preferable). */
static inline void
_dl_writev (int fd, const struct iovec *iov, size_t niov)
{
for (size_t i = 0; i < niov; ++i)
{
size_t wrote;
if (__nacl_irt_fdio.write (fd, iov[i].iov_base, iov[i].iov_len,
&wrote) != 0
|| wrote != iov[i].iov_len)
/* The write failed, so don't bother trying any more. */
break;
}
}

30
sysdeps/nacl/dup.c Normal file
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@ -0,0 +1,30 @@
/* Duplicate a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Duplicate FD, returning a new file descriptor open on the same file. */
int
__dup (int fd)
{
int result;
return NACL_CALL (__nacl_irt_fdio.dup (fd, &result), result);
}
weak_alias (__dup, dup)

31
sysdeps/nacl/dup2.c Normal file
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@ -0,0 +1,31 @@
/* Duplicate a file descriptor to a chosen number. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Duplicate FD to FD2, closing the old FD2 and making FD2 be
open the same file as FD is. Return FD2 or -1. */
int
__dup2 (int fd, int fd2)
{
return NACL_CALL (__nacl_irt_fdio.dup2 (fd, fd2), fd2);
}
libc_hidden_def (__dup2)
weak_alias (__dup2, dup2)

6
sysdeps/nacl/entry.h Normal file
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@ -0,0 +1,6 @@
#ifndef __ASSEMBLY__
# include <stdint.h>
extern void _start (uint32_t info[]) attribute_hidden;
#endif
#define ENTRY_POINT _start

87
sysdeps/nacl/errnos.awk Normal file
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@ -0,0 +1,87 @@
# Script to produce bits/errno.h for NaCl.
# Copyright (C) 2015 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
BEGIN { maxerrno = 0 }
$1 == "#define" && $2 ~ /NACL_ABI_E[A-Z0-9_]+/ && $3 ~ /[0-9]+/ {
ename = $2;
sub(/NACL_ABI_/, "", ename);
errno = $3 + 0;
if (errno > maxerrno) maxerrno = errno;
errnos[errno] = ename;
errnos_by_name[ename] = errno;
if ($4 == "/*" && !(ename in errno_text)) {
etext = $5;
for (i = 6; i <= NF && $i != "*/"; ++i)
etext = etext " " $i;
errno_text[ename] = etext;
}
next;
}
$1 == "@comment" && $2 == "errno.h" { errnoh=1; next }
errnoh == 1 && $1 == "@comment" {
++errnoh;
etext = $3;
for (i = 4; i <= NF; ++i)
etext = etext " " $i;
next;
}
errnoh == 2 && $1 == "@deftypevr" && $2 == "Macro" && $3 == "int" {
ename = $4;
errno_text[ename] = etext;
next;
}
function define_errno(errno, ename) {
etext = errno_text[ename];
if (length(ename) < 8) ename = ename "\t";
printf "#define\t%s\t%d\t/* %s */\n", ename, errno, etext;
}
END {
print "\
/* This file generated by errnos.awk. */\n\
\n\
#if !defined __Emath_defined && (defined _ERRNO_H || defined __need_Emath)\n\
#undef __need_Emath\n\
#define __Emath_defined 1";
emath["EDOM"] = emath["EILSEQ"] = emath["ERANGE"] = 1;
for (ename in emath) {
errno = errnos_by_name[ename];
define_errno(errno, ename);
delete errnos[errno];
}
print "\
#endif\n\
\n\
#ifdef _ERRNO_H\n";
for (i = 1; i <= maxerrno; ++i)
if (i in errnos) define_errno(i, errnos[i]);
print "\n\
#define EWOULDBLOCK EAGAIN\n\
#define ENOTSUP EOPNOTSUPP\n\
\n\
extern __thread int errno __attribute__ ((__tls_model__ (\"initial-exec\")));\n\
#define errno errno\n\
\n\
#endif";
}

27
sysdeps/nacl/euidaccess.c Normal file
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@ -0,0 +1,27 @@
/* Check file access permission. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
/* Test for access to FILE. */
int
euidaccess (const char *file, int type)
{
/* No NaCl process will ever be set-ID, so access and euidaccess are one. */
return __access (file, type);
}

35
sysdeps/nacl/exit-thread.h Normal file
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@ -0,0 +1,35 @@
/* Call to terminate the current thread. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stddef.h>
#include <nacl-interfaces.h>
/* This causes the current thread to exit, without affecting other
threads in the process if there are any. If there are no other
threads left, then this has the effect of _exit (0). */
static inline void __attribute__ ((noreturn, always_inline, unused))
__exit_thread (void)
{
__nacl_irt_thread.thread_exit (NULL);
/* That never returns unless something is severely and unrecoverably wrong.
If it ever does, try to make sure we crash. */
while (1)
__builtin_trap ();
}

28
sysdeps/nacl/fchdir.c Normal file
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@ -0,0 +1,28 @@
/* Change working directory given a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Change the current directory to FD. */
int
__fchdir (int fd)
{
return NACL_CALL (__nacl_irt_dev_fdio.fchdir (fd), 0);
}
weak_alias (__fchdir, fchdir)

28
sysdeps/nacl/fchmod.c Normal file
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@ -0,0 +1,28 @@
/* Change a file's permissions given a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Change the permissions of the file referenced by FD to MODE. */
int
__fchmod (int fd, mode_t mode)
{
return NACL_CALL (__nacl_irt_dev_fdio.fchmod (fd, mode), 0);
}
weak_alias (__fchmod, fchmod)

28
sysdeps/nacl/fdatasync.c Normal file
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@ -0,0 +1,28 @@
/* Make all changes done to file data actually appear on disk. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Synchronize at least the data part of a file with the underlying
media. */
int
fdatasync (int fd)
{
return NACL_CALL (__nacl_irt_dev_fdio.fdatasync (fd), 0);
}

3
sysdeps/nacl/fork.c Normal file
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@ -0,0 +1,3 @@
/* Get the stub, bypassing the "generic" NPTL code. */
#include <posix/fork.c>
strong_alias (__fork, __libc_fork)

27
sysdeps/nacl/fsync.c Normal file
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@ -0,0 +1,27 @@
/* Make all changes done to FD actually appear on disk. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Make all changes done to FD actually appear on disk. */
int
fsync (int fd)
{
return NACL_CALL (__nacl_irt_dev_fdio.fsync (fd), 0);
}

32
sysdeps/nacl/ftruncate.c Normal file
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@ -0,0 +1,32 @@
/* Truncate a file. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Truncate the file referenced by FD to LENGTH bytes. */
int
__ftruncate (int fd, off_t length)
{
return NACL_CALL (__nacl_irt_dev_fdio.ftruncate (fd, length), 0);
}
weak_alias (__ftruncate, ftruncate)
/* ftruncate64 is the same as ftruncate. */
strong_alias (__ftruncate, __ftruncate64)
weak_alias (__ftruncate64, ftruncate64)

1
sysdeps/nacl/ftruncate64.c Normal file
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@ -0,0 +1 @@
/* ftruncate64 is the same as ftruncate. */

45
sysdeps/nacl/fxstat.c Normal file
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@ -0,0 +1,45 @@
/* Get stat information from a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* Avoid the declaration so the compiler doesn't complain about the alias
with a different type signature. It doesn't know that 'struct stat'
and 'struct stat64' are ABI-compatible. */
#define __fxstat64 __fxstat64_avoid
#include <sys/stat.h>
#undef __fxstat64
#include <errno.h>
#include <stddef.h>
#include <xstatconv.h>
#undef fstat
/* Get information about the file descriptor FD in BUF. */
int
__fxstat (int vers, int fd, struct stat *buf)
{
nacl_abi_stat_t abi_buf;
return NACL_CALL (__nacl_irt_fdio.fstat (fd, &abi_buf),
__xstat_conv (vers, &abi_buf, buf));
}
hidden_def (__fxstat)
weak_alias (__fxstat, _fxstat)
strong_alias (__fxstat, __fxstat64)
hidden_ver (__fxstat, __fxstat64)

1
sysdeps/nacl/fxstat64.c Normal file
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@ -0,0 +1 @@
/* fxstat.c defines __fxstat64 as an alias. */

56
sysdeps/nacl/getcwd.c Normal file
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@ -0,0 +1,56 @@
/* Get current working directory. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <limits.h>
#include <stdlib.h>
#include <nacl-interfaces.h>
/* Get the pathname of the current working directory,
and put it in SIZE bytes of BUF. Returns NULL if the
directory couldn't be determined or SIZE was too small.
If successful, returns BUF. In GNU, if BUF is NULL,
an array is allocated with `malloc'; the array is SIZE
bytes long, unless SIZE <= 0, in which case it is as
big as necessary. */
char *
__getcwd (char *buf, size_t size)
{
char *use_buf = buf;
if (buf == NULL)
{
if (size == 0)
size = PATH_MAX;
use_buf = malloc (size);
if (__glibc_unlikely (use_buf == NULL))
return NULL;
}
int error = __nacl_irt_dev_filename.getcwd (use_buf, size);
if (__glibc_unlikely (error))
{
if (use_buf != buf)
free (use_buf);
errno = error;
return NULL;
}
return use_buf;
}
weak_alias (__getcwd, getcwd)

29
sysdeps/nacl/getdents.c Normal file
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@ -0,0 +1,29 @@
/* Read directory entries from a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <dirent.h>
#include <nacl-interfaces.h>
ssize_t
internal_function
__getdents (int fd, char *buf, size_t nbytes)
{
size_t nread;
return NACL_CALL (__nacl_irt_fdio.getdents (fd, (void *) buf, nbytes, &nread),
nread);
}

1
sysdeps/nacl/getdents64.c Normal file
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@ -0,0 +1 @@
/* We do not define a getdirentries or getdirentries64 entry point at all. */

28
sysdeps/nacl/getdtsz.c Normal file
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@ -0,0 +1,28 @@
/* getdtablesize -- Return the limit on file descriptor values. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
/* Return the maximum number of file descriptors
the current process could possibly have. */
int
__getdtablesize (void)
{
/* There is no actual limit in NaCl, just memory. */
return -1;
}

1
sysdeps/nacl/getpagesize.c Normal file
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@ -0,0 +1 @@
#include <sysdeps/unix/getpagesize.c>

32
sysdeps/nacl/getpid.c Normal file
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@ -0,0 +1,32 @@
/* Get the process ID of the calling process. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
#include <nacl-interfaces.h>
/* Get the process ID of the calling process. */
pid_t
__getpid (void)
{
int pid;
return NACL_CALL (__nacl_irt_dev_getpid.getpid (&pid), pid);
}
libc_hidden_def (__getpid)
weak_alias (__getpid, getpid)
libc_hidden_weak (getpid)

65
sysdeps/nacl/getsysstats.c Normal file
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@ -0,0 +1,65 @@
/* getsysstats - Determine various system internal values. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/sysinfo.h>
#include <nacl-interfaces.h>
#undef __native_client__
#include "native_client/src/trusted/service_runtime/include/sys/unistd.h"
int
__get_nprocs_conf (void)
{
int nprocs;
if (__nacl_irt_basic.sysconf (NACL_ABI__SC_NPROCESSORS_ONLN, &nprocs) != 0)
/* On failure (which should be impossible), just report one processor. */
nprocs = 1;
return nprocs;
}
weak_alias (__get_nprocs_conf, get_nprocs_conf)
int
__get_nprocs (void)
{
return __get_nprocs_conf ();
}
weak_alias (__get_nprocs, get_nprocs)
long int
__get_phys_pages (void)
{
/* We have no general way to determine this value. */
__set_errno (ENOSYS);
return -1;
}
weak_alias (__get_phys_pages, get_phys_pages)
stub_warning (get_phys_pages)
long int
__get_avphys_pages (void)
{
/* We have no general way to determine this value. */
__set_errno (ENOSYS);
return -1;
}
weak_alias (__get_avphys_pages, get_avphys_pages)
stub_warning (get_avphys_pages)

40
sysdeps/nacl/gettimeofday.c Normal file
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@ -0,0 +1,40 @@
/* Get the current wall clock time. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/time.h>
#include <nacl-interfaces.h>
/* Get the current time of day and timezone information,
putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
Returns 0 on success, -1 on errors. */
int
__gettimeofday (struct timeval *tv, struct timezone *tz)
{
if (__glibc_unlikely (tz != NULL))
{
tz->tz_minuteswest = 0;
tz->tz_dsttime = 0;
}
return NACL_CALL (__nacl_irt_basic.gettod (tv), 0);
}
libc_hidden_def (__gettimeofday)
weak_alias (__gettimeofday, gettimeofday)
libc_hidden_weak (gettimeofday)

26
sysdeps/nacl/glob.c Normal file
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@ -0,0 +1,26 @@
/* Do glob searching. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h> /* Declares getlogin_r. */
/* We do not have getlogin_r in the library at all for NaCl.
Define it away so the glob code does not try to use it. */
#define getlogin_r(name, len) (ENOSYS)
/* Fetch the version that defines glob64 as an alias. */
#include <sysdeps/wordsize-64/glob.c>

1
sysdeps/nacl/glob64.c Normal file
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@ -0,0 +1 @@
#include <sysdeps/wordsize-64/glob64.c>

2
sysdeps/nacl/ifaddrs.c Normal file
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@ -0,0 +1,2 @@
/* Bypass the sysdeps/gnu version to get the plain stub. */
#include <inet/ifaddrs.c>

27
sysdeps/nacl/init-first.c Normal file
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@ -0,0 +1,27 @@
/* Initialization code run first thing by the ELF startup code. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifdef SHARED
# include <nacl-interfaces.h>
# define VDSO_SETUP __nacl_initialize_interfaces
#endif
#include <csu/init-first.c>

26
sysdeps/nacl/iofdopen.c Normal file
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@ -0,0 +1,26 @@
/* Open a stream from a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fcntl.h>
/* NaCl does not have a functioning fcntl, so don't use the stub and fail. */
#undef F_GETFL
#undef F_SETFL
#define __fcntl(...) ???should not be called???
#include <libio/iofdopen.c>

12
sysdeps/nacl/irt.sed Normal file
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@ -0,0 +1,12 @@
# This sed script massages native_client/src/untrusted/irt/irt.h into
# the nacl-irt.h used to build libc, by rewriting foo_t and struct bar
# to nacl_abi_foo_t and nacl_abi_bar_t (and eliding forward declarations).
# It doesn't perturb any struct CamelCaps cases, since such names will
# be used only in NaCl-specific interfaces.
/^struct \([a-z][a-z]*\);$/d
/^#include "irt\.h"$/d
/(/!b
s/\([a-z0-9_][a-z0-9_]*\)_t\>/nacl_abi_\1_t/g
s/struct \([a-z0-9_][a-z0-9_]*\)/nacl_abi_\1_t/g
s/nacl_abi_\(u*int[3264ptr]*_t\)/\1/g
s/nacl_abi_\(nacl_irt_\)/\1/g

38
sysdeps/nacl/isatty.c Normal file
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@ -0,0 +1,38 @@
/* Determine if a file descriptor refers to a terminal. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
#include <nacl-interfaces.h>
/* Return 1 if FD is a terminal, 0 if not. */
int
__isatty (int fd)
{
int result;
int error = __nacl_irt_dev_fdio.isatty (fd, &result);
if (error == 0)
{
if (result)
return 1;
error = ENOTTY;
}
errno = error;
return 0;
}
weak_alias (__isatty, isatty)

28
sysdeps/nacl/kernel-features.h Normal file
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@ -0,0 +1,28 @@
/* Set flags signalling availability of certain operating system features.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* This file can define __ASSUME_* macros checked by certain source files.
Almost none of these are used outside of sysdeps/unix/sysv/linux code.
But those referring to POSIX-level features like O_* flags can be. */
#define __ASSUME_O_CLOEXEC 1
/*
#define __ASSUME_DUP3 1
#define __ASSUME_ACCEPT4 1
*/

35
sysdeps/nacl/ldsodefs.h Normal file
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@ -0,0 +1,35 @@
/* Run-time dynamic linker data structures for loaded ELF shared objects. NaCl.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _LDSODEFS_H
/* Get the real definitions. */
#include_next <ldsodefs.h>
/* Now define our stuff. */
/* We have the auxiliary vector. */
#define HAVE_AUX_VECTOR 1
/* Used by static binaries to check the auxiliary vector. */
extern void _dl_aux_init (ElfW(auxv_t) *av) internal_function;
/* Initialization which is normally done by the dynamic linker. */
extern void _dl_non_dynamic_init (void) internal_function;
#endif /* ldsodefs.h */

4
sysdeps/nacl/libc-start.c Normal file
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@ -0,0 +1,4 @@
/* We can compute the location of auxv without a loop, so we might as well
pass it in. */
#define LIBC_START_MAIN_AUXVEC_ARG
#include <csu/libc-start.c>

28
sysdeps/nacl/link.c Normal file
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@ -0,0 +1,28 @@
/* Make a hard link. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Make a link to FROM called TO. */
int
__link (const char *from, const char *to)
{
return NACL_CALL (__nacl_irt_dev_filename.link (from, to), 0);
}
weak_alias (__link, link)

87
sysdeps/nacl/lowlevellock-futex.h Normal file
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@ -0,0 +1,87 @@
/* Low-level locking access to futex facilities. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _LOWLEVELLOCK_FUTEX_H
#define _LOWLEVELLOCK_FUTEX_H 1
#include <nacl-interfaces.h>
#include <time.h>
#pragma GCC diagnostic ignored "-Wunused-value" /* XXX */
/* Values for 'private' parameter of locking macros. Note pthreadP.h
optimizes for these exact values, though they are not required. */
#define LLL_PRIVATE 0
#define LLL_SHARED 128
#define FUTEX_PRIVATE_FLAG 0 /* XXX */
/* Wait while *FUTEXP == VAL for an lll_futex_wake call on FUTEXP. */
#define lll_futex_wait(futexp, val, private) \
(- __nacl_irt_futex.futex_wait_abs ((volatile int *) (futexp), val, NULL))
/* Wait until a lll_futex_wake call on FUTEXP, or TIMEOUT elapses. */
#define lll_futex_timed_wait(futexp, val, timeout, private) \
({ \
/* This timeout is relative, but the IRT call wants it absolute. */ \
const struct timespec *_to = (timeout); \
struct timespec _ts; \
int _err = 0; \
if (_to != NULL \
&& __glibc_likely ((_err = __nacl_irt_clock.clock_gettime \
(CLOCK_REALTIME, &_ts)) == 0)) \
{ \
_ts.tv_sec -= _to->tv_sec; \
_ts.tv_nsec -= _to->tv_nsec; \
while (_ts.tv_nsec < 0) \
{ \
_ts.tv_nsec += 1000000000; \
--_ts.tv_sec; \
} \
_to = &_ts; \
} \
if (_err == 0) \
_err = __nacl_irt_futex.futex_wait_abs \
((volatile int *) (futexp), val, _to); \
-_err; \
})
/* Wake up up to NR waiters on FUTEXP. */
#define lll_futex_wake(futexp, nr, private) \
({ \
int _woken; \
- __nacl_irt_futex.futex_wake ((volatile int *) (futexp), nr, &_woken); \
})
/* NaCl does not support the requeue operation. The only use of this is in
pthread_cond_broadcast, which handles an error return by falling back to
plain lll_futex_wake. */
#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \
((futexp), (nr_wake), (nr_move), (mutex), (val), (private), -ENOSYS)
/* NaCl does not support the special wake-unlock operation. The only use
of this is in pthread_cond_signal, which handles an error return by
falling back to plain lll_futex_wake. */
/* Wake up up to NR_WAKE waiters on FUTEXP and NR_WAKE2 on FUTEXP2. */
#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \
((futexp), (nr_wake), (nr_wake2), (futexp2), (private), -ENOSYS)
#endif /* lowlevellock-futex.h */

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/* lseek -- Move the file position of a file descriptor. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <nacl-interfaces.h>
/* Seek to OFFSET on FD, starting from WHENCE. */
off_t
__libc_lseek (int fd, off_t offset, int whence)
{
off_t result;
int error = __nacl_irt_fdio.seek (fd, offset, whence, &result);
if (error)
{
__set_errno (error);
return -1;
}
return result;
}
libc_hidden_def (__lseek)
weak_alias (__libc_lseek, __lseek)
weak_alias (__libc_lseek, lseek)
/* Since off64_t is the same as off_t, lseek64 is just an alias. */
weak_alias (__libc_lseek, __libc_lseek64)
weak_alias (__libc_lseek, __lseek64)
weak_alias (__libc_lseek, lseek64)

1
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/* lseek.c defines lseek64 as an alias. */

46
sysdeps/nacl/lxstat.c Normal file
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/* Get stat information from a file name NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* Avoid the declaration so the compiler doesn't complain about the alias
with a different type signature. It doesn't know that 'struct stat'
and 'struct stat64' are ABI-compatible. */
#define __lxstat64 __lxstat64_avoid
#include <sys/stat.h>
#undef __lxstat64
#include <errno.h>
#include <stddef.h>
#include <xstatconv.h>
#undef lstat
/* Get file attributes about FILE and put them in BUF.
If FILE is a symbolic link, do not follow it. */
int
__lxstat (int vers, const char *file, struct stat *buf)
{
nacl_abi_stat_t abi_buf;
return NACL_CALL (__nacl_irt_dev_filename.lstat (file, &abi_buf),
__xstat_conv (vers, &abi_buf, buf));
}
hidden_def (__lxstat)
weak_alias (__lxstat, _lxstat)
strong_alias (__lxstat, __lxstat64)
hidden_ver (__lxstat, __lxstat64)

1
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/* lxstat.c defines __lxstat64 as an alias. */

28
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/* Make a directory. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/stat.h>
#include <nacl-interfaces.h>
/* Create a directory named PATH with protections MODE. */
int
__mkdir (const char *path, mode_t mode)
{
return NACL_CALL (__nacl_irt_dev_filename.mkdir (path, mode), 0);
}
weak_alias (__mkdir, mkdir)

49
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/* Map addresses from a file or anonymous memory. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/mman.h>
#include <nacl-interfaces.h>
/* Map addresses starting near ADDR and extending for LEN bytes. From
OFFSET into the file FD describes according to PROT and FLAGS. If ADDR
is nonzero, it is the desired mapping address. If the MAP_FIXED bit is
set in FLAGS, the mapping will be at ADDR exactly (which must be
page-aligned); otherwise the system chooses a convenient nearby address.
The return value is the actual mapping address chosen or MAP_FAILED
for errors (in which case `errno' is set). A successful `mmap' call
deallocates any previous mapping for the affected region. */
__ptr_t
__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
{
int error = __nacl_irt_memory.mmap (&addr, len, prot, flags, fd, offset);
if (error)
{
errno = error;
return MAP_FAILED;
}
return addr;
}
weak_alias (__mmap, mmap)
/* Since off64_t is the same as off_t, mmap64 is just an alias. */
strong_alias (__mmap, __mmap64)
weak_alias (__mmap, mmap64)

1
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/* mmap.c defines mmap64 as an alias. */

33
sysdeps/nacl/mprotect.c Normal file
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/* Change memory protections on pages. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <sys/mman.h>
#include <nacl-interfaces.h>
/* Change the memory protection of the region starting at ADDR and
extending LEN bytes to PROT. Returns 0 if successful, -1 for errors
(and sets errno). */
int
__mprotect (__ptr_t addr, size_t len, int prot)
{
return NACL_CALL (__nacl_irt_memory.mprotect (addr, len, prot), 0);
}
weak_alias (__mprotect, mprotect)

32
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/* Deallocate a region of pages. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/mman.h>
#include <nacl-interfaces.h>
/* Deallocate any mapping for the region starting at ADDR and extending LEN
bytes. Returns 0 if successful, -1 for errors (and sets errno). */
int
__munmap (__ptr_t addr, size_t len)
{
return NACL_CALL (__nacl_irt_memory.munmap (addr, len), 0);
}
weak_alias (__munmap, munmap)

69
sysdeps/nacl/nacl-after-link.sh Executable file
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#!/bin/sh
# Script to validate NaCl binaries after linking.
# Copyright (C) 2015 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
# See sysdeps/nacl/Makefile for how this script is invoked.
READELF="$1"
binary="$2"
if [ -z "$NACL_SDK_ROOT" ]; then
echo >&2 "$0: NACL_SDK_ROOT must be set in the environment"
exit 77
fi
ncval="${NACL_SDK_ROOT}/tools/ncval"
if [ ! -x "$ncval" ]; then
echo >&2 "$0: No ncval binary in $ncval"
exit 77
fi
"${READELF}" -Wl "$binary" | awk '
BEGIN { saw_load = saw_text = 0 }
$1 == "LOAD" {
saw_load = 1;
if (/ R.E /) saw_code = 1;
}
END {
exit (saw_code ? 11 : saw_load ? 22 : 1);
}
'
case $? in
11)
# We saw a code segment, so we can try ncval.
;;
22)
# We saw LOAD segments but none of them were code.
echo >&2 "+++ No code: $binary"
exit 0
;;
*)
# Something funny going on.
echo >&2 "*** Failed to analyze: $binary"
exit 2
;;
esac
if "$ncval" "$binary"; then
echo >&2 "+++ Validated: $binary"
exit 0
else
echo >&2 "*** Validation failed: $binary"
exit 2
fi

47
sysdeps/nacl/nacl-interface-list.h Normal file
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/* List of NaCl interface tables used in libraries.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_BASIC_v0_1, nacl_irt_basic)
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_FDIO_v0_1, nacl_irt_fdio)
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_FILENAME_v0_1, nacl_irt_filename)
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_MEMORY_v0_3, nacl_irt_memory)
NACL_MANDATORY_INTERFACE (libc,
NACL_IRT_THREAD_v0_1, nacl_irt_thread)
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_FUTEX_v0_1, nacl_irt_futex)
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_TLS_v0_1, nacl_irt_tls)
NACL_MANDATORY_INTERFACE (libc,
NACL_IRT_RESOURCE_OPEN_v0_1, nacl_irt_resource_open)
NACL_MANDATORY_INTERFACE (rtld,
NACL_IRT_CODE_DATA_ALLOC_v0_1,
nacl_irt_code_data_alloc)
NACL_OPTIONAL_INTERFACE (libc,
NACL_IRT_CLOCK_v0_1, nacl_irt_clock)
NACL_OPTIONAL_INTERFACE (rtld,
NACL_IRT_DYNCODE_v0_1, nacl_irt_dyncode)
NACL_OPTIONAL_INTERFACE (rtld,
NACL_IRT_DEV_GETPID_v0_1, nacl_irt_dev_getpid)
NACL_OPTIONAL_INTERFACE (rtld,
NACL_IRT_DEV_FILENAME_v0_3, nacl_irt_dev_filename)
NACL_OPTIONAL_INTERFACE (libc,
NACL_IRT_DEV_FDIO_v0_3, nacl_irt_dev_fdio)

43
sysdeps/nacl/nacl-interface-table.c Normal file
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/* Define one NaCl interface table.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "nacl-interfaces.h"
#define PASTE(a, b) PASTE_1 (a, b)
#define PASTE_1(a, b) a##b
#define STRINGIFY(x) STRINGIFY_1 (x)
#define STRINGIFY_1(x) #x
#if IS_IN (rtld) && PASTE (MODULE_, INTERFACE_MODULE) != MODULE_rtld
# error "This interface is also needed in rtld."
#endif
#define SECTION(which) \
section ("nacl_" STRINGIFY (INTERFACE_CATEGORY) "_interface_" #which)
static const struct nacl_interface PASTE (desc_, INTERFACE_TYPE)
__attribute__ ((used, SECTION (names))) =
{
.table_size = sizeof (struct INTERFACE_TYPE),
.namelen = sizeof INTERFACE_STRING,
.name = INTERFACE_STRING
};
struct INTERFACE_TYPE PASTE (__, INTERFACE_TYPE)
__attribute__ ((SECTION (tables)));
PASTE (INTERFACE_MODULE, _hidden_data_def) (PASTE (__, INTERFACE_TYPE))

123
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/* Using NaCl interface tables.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <nacl-interfaces.h>
#include <ldsodefs.h>
/* These magic symbols are provided implicitly by the linker to
give us the bounds of the specially-named sections. */
extern const struct nacl_interface __start_nacl_mandatory_interface_names[]
attribute_hidden;
extern const struct nacl_interface __stop_nacl_mandatory_interface_names[]
attribute_hidden;
extern uintptr_t __start_nacl_mandatory_interface_tables[]
attribute_hidden;
extern uintptr_t __stop_nacl_mandatory_interface_tables[]
attribute_hidden;
/* We use weak references for the optional ones, since they
might not be included at all in any given statically-linked program. */
extern const struct nacl_interface __start_nacl_optional_interface_names[]
attribute_hidden __attribute__ ((weak));
extern const struct nacl_interface __stop_nacl_optional_interface_names[]
attribute_hidden __attribute__ ((weak));
extern uintptr_t __start_nacl_optional_interface_tables[]
attribute_hidden __attribute__ ((weak));
extern uintptr_t __stop_nacl_optional_interface_tables[]
attribute_hidden __attribute__ ((weak));
static uintptr_t *
next_nacl_table (uintptr_t *t, const struct nacl_interface *i)
{
return (void *) t + i->table_size;
}
static void __attribute__ ((noreturn))
missing_mandatory_interface (const struct nacl_interface *i)
{
static const char before[] =
"FATAL: NaCl IRT interface query failed for essential interface \"";
static const char after[] =
"\"\n";
if (__nacl_irt_fdio.write != NULL)
{
size_t wrote;
(*__nacl_irt_fdio.write) (2, before, sizeof before - 1, &wrote);
(*__nacl_irt_fdio.write) (2, i->name, i->namelen - 1, &wrote);
(*__nacl_irt_fdio.write) (2, after, sizeof after - 1, &wrote);
}
if (__nacl_irt_basic.exit != NULL)
(*__nacl_irt_basic.exit) (-1);
__builtin_trap ();
}
static void
initialize_mandatory_interfaces (void)
{
const struct nacl_interface *i = __start_nacl_mandatory_interface_names;
uintptr_t *t = __start_nacl_mandatory_interface_tables;
while (i < __stop_nacl_mandatory_interface_names)
{
if (__nacl_irt_query (i->name, t, i->table_size) != i->table_size)
missing_mandatory_interface (i);
t = next_nacl_table (t, i);
i = next_nacl_interface (i);
}
}
static int
nacl_missing_optional_interface (void)
{
return ENOSYS;
}
static void
initialize_optional_interfaces (void)
{
const struct nacl_interface *i = __start_nacl_optional_interface_names;
uintptr_t *t = __start_nacl_optional_interface_tables;
while (i < __stop_nacl_optional_interface_names)
{
size_t filled = __nacl_irt_query (i->name, t, i->table_size);
if (filled != i->table_size)
for (size_t slot = 0; slot < i->table_size / sizeof *t; ++slot)
t[slot] = (uintptr_t) &nacl_missing_optional_interface;
t = next_nacl_table (t, i);
i = next_nacl_interface (i);
}
}
void attribute_hidden
__nacl_initialize_interfaces (void)
{
initialize_mandatory_interfaces ();
initialize_optional_interfaces ();
}

108
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/* Using NaCl interface tables.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _NACL_INTERFACES_H
#define _NACL_INTERFACES_H 1
#include <errno.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/types.h>
/* <nacl-irt.h> is massaged from native_client/src/untrusted/irt/irt.h so
that it uses nacl_abi_*_t type names. We must define those types first. */
/* These are the same in the IRT ABI as in the libc ABI. */
typedef blksize_t nacl_abi_blksize_t;
typedef dev_t nacl_abi_dev_t;
typedef gid_t nacl_abi_gid_t;
typedef ino_t nacl_abi_ino_t;
typedef mode_t nacl_abi_mode_t;
typedef nlink_t nacl_abi_nlink_t;
typedef size_t nacl_abi_size_t;
typedef time_t nacl_abi_time_t;
typedef uid_t nacl_abi_uid_t;
typedef struct dirent nacl_abi_dirent_t;
typedef struct timeval nacl_abi_timeval_t;
typedef struct timespec nacl_abi_timespec_t;
/* XXX change clock_t? */
typedef uint32_t nacl_abi_clock_t;
typedef int32_t nacl_abi_blkcnt_t;
/* This is different by design. */
typedef struct nacl_abi_stat nacl_abi_stat_t;
#include <nacl-irt.h>
/* This is how we access the IRT interface-query function.
This formulation makes it usable as if it were a function name. */
#define __nacl_irt_query (*(TYPE_nacl_irt_query) GLRO(dl_sysinfo))
/* This describes one IRT (or IRT-like) interface that libc uses.
This structure contains no pointers, so it can go into rodata
without relocs. Instead, the actual tables we use for these
interfaces live in a parallel section in writable data. */
struct nacl_interface {
size_t table_size;
size_t namelen;
char name[];
};
/* Increment for 'const struct nacl_interface *' pointers. */
static inline const struct nacl_interface *
next_nacl_interface (const struct nacl_interface *i)
{
uintptr_t align = __alignof (*i);
return (const void *) (((uintptr_t) &i->name[i->namelen] + align - 1)
& -align);
}
#if IS_IN (libpthread)
# define libpthread_hidden_proto(name) hidden_proto (name)
#else
# define libpthread_hidden_proto(name)
#endif
#define DECLARE_INTERFACE(module, type) \
extern struct type __##type; module##_hidden_proto (__##type);
#define NACL_MANDATORY_INTERFACE(module, id, type) \
DECLARE_INTERFACE (module, type)
#define NACL_OPTIONAL_INTERFACE(module, id, type) \
DECLARE_INTERFACE (module, type)
#include "nacl-interface-list.h"
#undef NACL_MANDATORY_INTERFACE
#undef NACL_OPTIONAL_INTERFACE
extern void __nacl_initialize_interfaces (void) attribute_hidden;
/* Convenience function for handling IRT call return values. */
static inline int
__nacl_fail (int err)
{
errno = err;
return -1;
}
#define NACL_CALL(err, val) \
({ int _err = (err); _err ? __nacl_fail (_err) : (val); })
#endif /* nacl-interfaces.h */

25
sysdeps/nacl/nacl-interfaces.mk.in Normal file
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/* Might as well be -*- C -*-.
This generates a makefile that sets the variable pairs
nacl-MODULE-mandatory-interfaces and nacl-MODULE-optional-interfaces
based on the nacl-interface-list.h list. */
%define NACL_MANDATORY_INTERFACE(module, id, type) \
nacl-mandatory-interfaces += module-type
%define NACL_OPTIONAL_INTERFACE(module, id, type) \
nacl-optional-interfaces += module-type
%include "nacl-interface-list.h"
%undef NACL_MANDATORY_INTERFACE
%undef NACL_OPTIONAL_INTERFACE
%define NACL_MANDATORY_INTERFACE(module, id, type) \
nacl-module-type-string := id
%define NACL_OPTIONAL_INTERFACE(module, id, type) \
nacl-module-type-string := id
%include "nacl-interface-list.h"
%undef NACL_MANDATORY_INTERFACE
%undef NACL_OPTIONAL_INTERFACE

280
sysdeps/nacl/nacl-test-wrapper.sh Executable file
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@ -0,0 +1,280 @@
#!/bin/bash
# test-wrapper script for NaCl.
# Copyright (C) 2015 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
progname="$(basename "$0")"
usage="usage: ${progname} --arch=ARCH [VAR=VAL...] COMMAND ..."
help="
"
use_bootstrap=true
arch=
env=()
envi=0
while [ $# -gt 0 ]; do
case "$1" in
--help)
echo "$usage"
echo "$help"
exit 0
;;
--arch=*)
arch="${1#--arch=}"
shift
;;
*=*)
env[envi++]='-E'
env[envi++]="$1"
shift
;;
--)
shift
break
;;
*)
break
;;
esac
done
if [ $# -lt 1 -o -z "$arch" ]; then
echo "$usage" >&2
echo "Type '${progname} --help' for more detailed help." >&2
exit 1
fi
test_args=("$@")
if [ -z "$NACL_SDK_ROOT" ]; then
echo >&2 "$0: NACL_SDK_ROOT must be set in the environment"
exit 77
fi
# We use a handful of things from the NaCl SDK, or at least
# from a directory matching the layout of the NaCl SDK.
sdk_tools="${NACL_SDK_ROOT}/tools"
NACL_BOOTSTRAP="${sdk_tools}/nacl_helper_bootstrap_${arch}"
NACL_SEL_LDR="${sdk_tools}/sel_ldr_${arch}"
NACL_IRT="${sdk_tools}/irt_core_${arch}.nexe"
NACL_LOADER="${sdk_tools}/loader_${arch}.nexe"
if [ ! -x "$NACL_BOOTSTRAP" -o ! -x "$NACL_SEL_LDR" ]; then
echo >&2 "$0: sel_ldr_${arch} and/or nacl_helper_bootstrap_${arch} missing"
echo >&2 "$0: from directory $sdk_tools"
exit 77
fi
if [ ! -r "$NACL_IRT" -o ! -r "$NACL_LOADER" ]; then
echo >&2 "$0: irt_core_${arch}.nexe and/or loader_${arch}.nexe missing"
echo >&2 "$0: from directory $sdk_tools"
exit 77
fi
# Figure out if we are building for the native machine or not.
# If not, we'll run sel_ldr under qemu.
decide_use_emulator()
{
local arg
for arg; do
if [[ "$(uname -m)" = "$1" ]]; then
return
fi
done
use_emulator=true
}
use_emulator=false
case "$arch" in
arm)
decide_use_emulator 'arm*'
emulator=(qemu-arm -cpu cortex-a15 -L "${sdk_tools}/arm_trusted")
;;
x86_32)
decide_use_emulator 'i?86' 'x86_64*'
emulator=(qemu-i386)
;;
x86_64)
decide_use_emulator 'x86_64*'
emulator=(qemu-x86_64)
;;
esac
if $use_emulator; then
ldr_args=('-Q')
emulator_factor=10
else
emulator=()
ldr_args=()
emulator_factor=1
fi
if $use_bootstrap; then
ldr=(
"${NACL_BOOTSTRAP}"
"${NACL_SEL_LDR}"
'--r_debug=0xXXXXXXXXXXXXXXXX'
'--reserved_at_zero=0xXXXXXXXXXXXXXXXX'
)
else
ldr=("${NACL_SEL_LDR}")
fi
static=true
case "$1" in
*/ld-nacl*) static=false ;;
esac
if $static; then
loader=()
else
loader=(-f "${NACL_LOADER}")
fi
run_test()
{
local test_fifo="$1"
local cmd=(
"${emulator[@]}" "${ldr[@]}" -q -S -a "${ldr_args[@]}" -B "${NACL_IRT}"
"${loader[@]}" "${env[@]}" -E TEST_DIRECT="$test_fifo" -- "${test_args[@]}"
)
if [ "${NACLVERBOSITY:+set}" = set ]; then
"${cmd[@]}"
else
NACLLOG=/dev/null "${cmd[@]}"
fi
}
temp_files=()
test_fifo=
do_cleanup()
{
rm -rf "$test_fifo" "${temp_files[@]}"
}
trap do_cleanup EXIT HUP INT TERM
# Create a named pipe to receive the TEST_DIRECT information from the test
# program.
test_fifo=${TMPDIR:-/tmp}/libc-test-fifo.$$
rm -f "$test_fifo"
mkfifo "$test_fifo" || {
echo "Cannot create test FIFO '$test_fifo'"
exit 1
}
# Run the test in the background, so we can implement a timeout.
# The no-op redirection defeats the default behavior of "< /dev/null"
# for a background command.
run_test "$test_fifo" <&0 & test_pid=$!
# Set up a short timeout before we read from the FIFO, in case
# the program doesn't actually write to the FIFO at all (it is
# not a test-skeleton.c program, or it dies very early).
no_skeleton=false
script_pid=$$
trap 'no_skeleton=true' USR1
(sleep 2; kill -USR1 $script_pid) 2> /dev/null &
# The test should first write into the FIFO to describe its expectations.
# Our open-for-reading of the FIFO will block until the test starts up and
# opens it for writing. Then our reads will block until the test finishes
# writing out info and closes the FIFO. At that point we will have
# collected (and evaluated) what it emitted. It sets these variables:
# timeout=%u
# timeoutfactor=%u
# exit=%u
# signal=%s
unset exit signal
. "$test_fifo" 2> /dev/null
# If we got this far, either the 'no_skeleton=true' watchdog already
# fired, or else we don't want it to.
trap '' USR1
if $no_skeleton; then
# We hit the timeout, so we didn't get full information about test
# expectations. Reset any partial results we may have gotten.
unset exit signal
else
# Now we know the expected timeout, so we can start the timer running.
((sleep_time = timeout * timeoutfactor * emulator_factor))
# Now start a background subshell to enforce the timeout.
(sleep "$sleep_time"; kill -ALRM $test_pid) 2> /dev/null &
fi
# This corresponds to '#ifdef EXPECTED_STATUS' in test-skeleton.c.
expected_status()
{
test "${exit+yes}" = yes
}
# This corresponds to '#ifdef EXPECTED_SIGNAL' in test-skeleton.c.
expected_signal()
{
test "${signal+yes}" = yes
}
# This corresponds to 'if (WIFEXITED (status))' in test-skeleton.c.
wifexited()
{
test $test_rc -lt 128
}
# Now wait for the test process to finish.
wait $test_pid
test_rc=$?
# This exactly duplicates the logic in test-skeleton.c.
if wifexited; then
if ! expected_status; then
if ! expected_signal; then
# Simply exit with the return value of the test. */
exit $test_rc
else
echo "Expected signal '${signal}' from child, got none"
exit 1
fi
else
if [ $test_rc -ne $exit ]; then
echo "Expected status $exit, got $test_rc"
exit 1
fi
exit 0
fi
else
# Process was killed by timer or other signal.
((test_signal = test_rc > 192 ? 256 - test_rc : test_rc - 128 ))
test_signame=$(kill -l "$test_signal")
if ! expected_signal; then
echo "Didn't expect signal from child; got '${test_signame}'"
exit 1
else
if [ "$test_signame" != "$signal" ]; then
echo "\
Incorrect signal from child: got '${test_signame}', need '${signal}'"
exit 1
fi
exit 0
fi
fi

49
sysdeps/nacl/nacl_interface_query.c Normal file
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@ -0,0 +1,49 @@
/* NaCl function exposing IRT interface query.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <nacl-interfaces.h>
#include <ldsodefs.h>
#ifdef SHARED
/* We can define this trivially using IFUNC rather than a wrapper
because we absolutely require that we get the IRT interface query
function pointer via AT_SYSINFO. */
extern TYPE_nacl_irt_query nacl_interface_query_ifunc (void)
asm ("nacl_interface_query");
TYPE_nacl_irt_query
nacl_interface_query_ifunc (void)
{
return &__nacl_irt_query;
}
asm (".type nacl_interface_query, %gnu_indirect_function");
#else
/* In the static library, using IFUNC is just extra overhead. */
size_t
nacl_interface_query (const char *interface_ident,
void *table, size_t tablesize)
{
return __nacl_irt_query (interface_ident, table, tablesize);
}
#endif

33
sysdeps/nacl/nanosleep.c Normal file
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@ -0,0 +1,33 @@
/* nanosleep -- Sleep for a duration given in nanoseconds. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <time.h>
#include <nacl-interfaces.h>
/* Pause execution for a number of nanoseconds. */
int
__libc_nanosleep (const struct timespec *requested_time,
struct timespec *remaining)
{
return NACL_CALL (__nacl_irt_basic.nanosleep (requested_time, remaining), 0);
}
weak_alias (__libc_nanosleep, __nanosleep)
libc_hidden_def (__nanosleep)
weak_alias (__libc_nanosleep, nanosleep)

52
sysdeps/nacl/open.c Normal file
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@ -0,0 +1,52 @@
/* Open a file by name. NaCl version.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <nacl-interfaces.h>
/* Open FILE with access OFLAG. If OFLAG includes O_CREAT,
a third argument is the file protection. */
int
__libc_open (const char *file, int oflag, ...)
{
mode_t mode = 0;
if (oflag & O_CREAT)
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, mode_t);
va_end (arg);
}
int fd;
return NACL_CALL (__nacl_irt_filename.open (file, oflag, mode, &fd), fd);
}
libc_hidden_def (__libc_open)
weak_alias (__libc_open, __open)
libc_hidden_weak (__open)
weak_alias (__libc_open, open)
/* open64 is just an alias. */
strong_alias (__libc_open, __libc_open64)
strong_alias (__libc_open64, __open64)
libc_hidden_def (__open64)
weak_alias (__libc_open64, open64)

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