glibc/sysdeps/hppa/dl-fptr.c
Ulrich Drepper b15cb49505 Update.
2000-10-14  Ulrich Drepper  <drepper@redhat.com>

	* math/libm-test.inc (frexp_test): Add L suffix also to parameters.
	(hypot_test): Likewise.

	* sysdeps/generic/printf_fphex.c: Compute width of decimal point
	string correctly.  Handle padding correctly.

	* sysdeps/ia64/fpu/printf_fphex.c: Use sizeof in _itowa parameters
	correctly.
	* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
	* sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise.

2000-10-12  Alan Modra  <alan@linuxcare.com.au>

	* FAQ.in: Add --start-group and --end-group.

2000-10-12  Alan Modra  <alan@linuxcare.com.au>

	* malloc/memusage.c: Conditionalize stack usage calculation on
	stack direction.

2000-10-12  Alan Modra  <alan@linuxcare.com.au>

	* config.h.in: Add ASM_LINE_SEP.
	* configure.in: Add test for comment and line separators.
	* include/libc-symbols.h: Define and use ASM_LINE_SEP, and add tabs to
	placate some hppa assemblers.
	* sysdeps/hppa/sysdep.h: Likewise.
	* sysdeps/gnu/siglist.c: Insert \n and \t into inline asm.
	* sysdeps/unix/sysv/linux/errlist.c: Likewise.

2000-10-12  David Huggins-Daines  <dhd@linuxcare.com>

	* sysdeps/unix/sysv/linux/Makefile: Include <bits/initspin> in
	$(sysdep_headers).
	* sysdeps/unix/sysv/linux/bits/initspin.h: Dummy version for
	non-threaded platforms.

2000-10-12  David Huggins-Daines  <dhd@linuxcare.com>

	* configure.in: Add definitions for hppa.
	* elf/elf.h: Add PLABEL32 relocation for hppa ELF32, comments
	for IPLT and EPLT relocations.
	* shlib-versions: Version symbol definitions for hppa-linux.
	* sysdeps/unix/sysv/linux/configure.in: Define $arch_minimum_kernel
	for hppa.

2000-10-12  David Huggins-Daines  <dhd@linuxcare.com>

	* sysdeps/hppa/Makefile: New file.
	* sysdeps/hppa/Versions: New file.

	* sysdeps/hppa/setjmp.S: New file.
	* sysdeps/hppa/__longjmp.S: New file.
	* sysdeps/hppa/bits/setjmp.h: New file.
	* sysdeps/hppa/frame.h: New file.

	* sysdeps/hppa/add_n.s: Don't use %r19 (linkage table pointer).
	* sysdeps/hppa/sub_n.s: Likewise.
	* sysdeps/hppa/lshift.s: Likewise.
	* sysdeps/hppa/rshift.s: Likewise.
	* sysdeps/hppa/udiv_qrnnd.s: Likewise.
	* sysdeps/hppa/hppa1.1/addmul_1.s: Likewise.
	* sysdeps/hppa/hppa1.1/submul_1.s: Likewise.
	* sysdeps/hppa/hppa1.1/mul_1.s: Likewise.
	* sysdeps/hppa/hppa1.1/udiv_qrnnd.s: Likewise.

	* sysdeps/hppa/dl-machine.h: New file.
	* sysdeps/hppa/dl-fptr.c: New file (note that this is almost
	identical to the IA-64 one).
	* sysdeps/hppa/dl-lookupcfg.h: Likewise.
	* sysdeps/hppa/dl-symaddr.c: Likewise.

	* sysdeps/hppa/elf/initfini.c: New file.
	* sysdeps/hppa/elf/start.S: New file.

	* sysdeps/hppa/fpu/bits/fenv.h: New file.
	* sysdeps/hppa/fpu/fclrexcpt.c: New file.
	* sysdeps/hppa/fpu/fedisblxcpt.c: New file.
	* sysdeps/hppa/fpu/feenablxcpt.c: New file.
	* sysdeps/hppa/fpu/fegetenv.c: New file.
	* sysdeps/hppa/fpu/fegetexcept.c: New file.
	* sysdeps/hppa/fpu/fegetround.c: New file.
	* sysdeps/hppa/fpu/feholdexcpt.c: New file.
	* sysdeps/hppa/fpu/fesetenv.c: New file.
	* sysdeps/hppa/fpu/fesetround.c: New file.
	* sysdeps/hppa/fpu/feupdateenv.c: New file.
	* sysdeps/hppa/fpu/fegetexcptflg.c: New file.
	* sysdeps/hppa/fpu/fraiseexcpt.c: New file.
	* sysdeps/hppa/fpu/fsetexcptflg.c: New file.
	* sysdeps/hppa/fpu/ftestexcept.c: New file.

	* sysdeps/unix/sysv/linux/hppa/Makefile: New file.
	* sysdeps/unix/sysv/linux/hppa/Versions: New file.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: New file.
	* sysdeps/unix/sysv/linux/hppa/sysdep.c: New file.
	* sysdeps/unix/sysv/linux/hppa/sysdep.h: New file.

	* sysdeps/unix/sysv/linux/hppa/bits/fcntl.h: New file.
	* sysdeps/unix/sysv/linux/hppa/bits/ioctls.h: New file.
	* sysdeps/unix/sysv/linux/hppa/bits/mman.h: New file.
	* sysdeps/unix/sysv/linux/hppa/bits/sigaction.h: New file.
	* sysdeps/unix/sysv/linux/hppa/bits/signum.h: New file.
	* sysdeps/unix/sysv/linux/hppa/brk.c: New file.
	* sysdeps/unix/sysv/linux/hppa/clone.S: New file.
	* sysdeps/unix/sysv/linux/hppa/socket.S: New file.
	* sysdeps/unix/sysv/linux/hppa/syscall.S: New file.
	* sysdeps/unix/sysv/linux/hppa/setrlimit.c: New file.
	* sysdeps/unix/sysv/linux/hppa/getrlimit.c: New file.
	* sysdeps/unix/sysv/linux/hppa/getrlimit64.c: New file.
	* sysdeps/unix/sysv/linux/hppa/kernel_sigaction.h: New file.
	* sysdeps/unix/sysv/linux/hppa/kernel_stat.h: New file.
	* sysdeps/unix/sysv/linux/hppa/mmap.c: New file.
	* sysdeps/unix/sysv/linux/hppa/profil-counter.h: New file.
	* sysdeps/unix/sysv/linux/hppa/procfs.h: New file.
	* sysdeps/unix/sysv/linux/hppa/ucontext.h: New file.
	* sysdeps/unix/sysv/linux/hppa/umount.c: New file.

2000-10-12  Alan Modra  <alan@linuxcare.com.au>

	* sysdeps/hppa/hppa1.1/Implies: New file.
	* sysdeps/hppa/memusage.h: New file.
2000-10-15 06:50:42 +00:00

213 lines
5.1 KiB
C

/* Make dynamic PLABELs for function pointers. HPPA version.
Copyright (C) 1999, 2000 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <unistd.h>
#include <string.h>
#include <sys/param.h>
#include <sys/mman.h>
#include <link.h>
#include <errno.h>
#include <ldsodefs.h>
#include <elf/dynamic-link.h>
#include <dl-machine.h>
#ifdef _LIBC_REENTRANT
# include <pt-machine.h>
/* Remember, we use 0 to mean that a lock is taken on PA-RISC. */
static int __hppa_fptr_lock = 1;
#endif
/* Because ld.so is now versioned, these functions can be in their own
file; no relocations need to be done to call them. Of course, if
ld.so is not versioned... */
#if 0
#ifndef DO_VERSIONING
# error "This will not work with versioning turned off, sorry."
#endif
#endif
#ifdef MAP_ANON
/* The fd is not examined when using MAP_ANON. */
#define ANONFD -1
#else
extern int _dl_zerofd;
#define ANONFD _dl_zerofd
#endif
struct hppa_fptr __boot_ldso_fptr[HPPA_BOOT_FPTR_SIZE];
struct hppa_fptr *__fptr_root = NULL;
struct hppa_fptr *__fptr_next = __boot_ldso_fptr;
static struct hppa_fptr *__fptr_free = NULL;
int __fptr_count = HPPA_BOOT_FPTR_SIZE;
Elf32_Addr
__hppa_make_fptr (const struct link_map *sym_map, Elf32_Addr value,
struct hppa_fptr **root, struct hppa_fptr *mem)
{
struct hppa_fptr **loc;
struct hppa_fptr *f;
#ifdef _LIBC_REENTRANT
/* Make sure we are alone. We don't need a lock during bootstrap. */
if (mem == NULL)
while (testandset (&__hppa_fptr_lock));
#endif
/* Search the sorted linked list for an existing entry for this
symbol. */
loc = root;
f = *loc;
while (f != NULL && f->func <= value)
{
if (f->func == value)
goto found;
loc = &f->next;
f = *loc;
}
/* Not found. Create a new one. */
if (mem != NULL)
f = mem;
else if (__fptr_free != NULL)
{
f = __fptr_free;
__fptr_free = f->next;
}
else
{
if (__fptr_count == 0)
{
#ifndef MAP_ANON
# define MAP_ANON 0
if (_dl_zerofd == -1)
{
_dl_zerofd = _dl_sysdep_open_zero_fill ();
if (_dl_zerofd == -1)
{
__close (fd);
_dl_signal_error (errno, NULL,
"cannot open zero fill device");
}
}
#endif
__fptr_next = __mmap (0, _dl_pagesize, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_PRIVATE, ANONFD, 0);
if (__fptr_next == MAP_FAILED)
_dl_signal_error(errno, NULL, "cannot map page for fptr");
__fptr_count = _dl_pagesize / sizeof (struct hppa_fptr);
}
f = __fptr_next++;
__fptr_count--;
}
f->func = value;
/* GOT has already been relocated in elf_get_dynamic_info - don't
try to relocate it again. */
f->gp = sym_map->l_info[DT_PLTGOT]->d_un.d_ptr;
f->next = *loc;
*loc = f;
found:
#ifdef _LIBC_REENTRANT
/* Release the lock. Again, remember, zero means the lock is taken! */
if (mem == NULL)
__hppa_fptr_lock = 1;
#endif
/* Set bit 30 to indicate to $$dyncall that this is a PLABEL. */
return (Elf32_Addr) f | 2;
}
void
_dl_unmap (struct link_map *map)
{
struct hppa_fptr **floc;
struct hppa_fptr *f;
struct hppa_fptr **lloc;
struct hppa_fptr *l;
__munmap ((void *) map->l_map_start, map->l_map_end - map->l_map_start);
#ifdef _LIBC_REENTRANT
/* Make sure we are alone. */
while (testandset (&__hppa_fptr_lock));
#endif
/* Search the sorted linked list for the first entry for this object. */
floc = &__fptr_root;
f = *floc;
while (f != NULL && f->func < map->l_map_start)
{
floc = &f->next;
f = *floc;
}
/* We found one. */
if (f != NULL && f->func < map->l_map_end)
{
/* Get the last entry. */
lloc = floc;
l = f;
while (l && l->func < map->l_map_end)
{
lloc = &l->next;
l = *lloc;
}
/* Updated FPTR. */
*floc = l;
/* Prepend them to the free list. */
*lloc = __fptr_free;
__fptr_free = f;
}
#ifdef _LIBC_REENTRANT
/* Release the lock. */
__hppa_fptr_lock = 1;
#endif
}
Elf32_Addr
_dl_lookup_address (const void *address)
{
Elf32_Addr addr = (Elf32_Addr) address;
struct hppa_fptr *f;
#ifdef _LIBC_REENTRANT
/* Make sure we are alone. */
while (testandset (&__hppa_fptr_lock));
#endif
for (f = __fptr_root; f != NULL; f = f->next)
if (f == address)
{
addr = f->func;
break;
}
#ifdef _LIBC_REENTRANT
/* Release the lock. */
__hppa_fptr_lock = 1;
#endif
return addr;
}