glibc/sysdeps/i386/strtok.S
Ulrich Drepper 5929563ff2 Update.
1997-04-01 00:37  Ulrich Drepper  <drepper@cygnus.com>

	* math/Makefile: Prevent inlining for test-{float,double,longdouble}.
	* math/libm-test.c (initialize): Make strings unique and force
	values to memory.

	* posix/regex.c: Debug debugging code.

	* sysdeps/i386/asm-syntax.h: Define `L' macro to emit correct
	syntax for local label.
	* sysdeps/i386/add_n.S: Use correct local label syntax for the
	binary format.
	* sysdeps/i386/addmul_1.S: Likewise.
	* sysdeps/i386/lshift.S: Likewise.
	* sysdeps/i386/memchr.S: Likewise.
	* sysdeps/i386/memset.S: Likewise.
	* sysdeps/i386/mul_1.S: Likewise.
	* sysdeps/i386/rshift.S: Likewise.
	* sysdeps/i386/stpcpy.S: Likewise.
	* sysdeps/i386/stpncpy.S: Likewise.
	* sysdeps/i386/strchr.S: Likewise.
	* sysdeps/i386/strcspn.S: Likewise.
	* sysdeps/i386/strlen.S: Likewise.
	* sysdeps/i386/strpbrk.S: Likewise.
	* sysdeps/i386/strrchr.S: Likewise.
	* sysdeps/i386/strspn.S: Likewise.
	* sysdeps/i386/strtok.S: Likewise.
	* sysdeps/i386/sub_n.S: Likewise.
	* sysdeps/i386/submul_1.S: Likewise.
	* sysdeps/i386/i486/strcat.S: Likewise.
	* sysdeps/i386/i486/strlen.S: Likewise.
	* sysdeps/i386/i586/add_n.S: Likewise.
	* sysdeps/i386/i586/addmul_1.S: Likewise.
	* sysdeps/i386/i586/lshift.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i586/mul_1.S: Likewise.
	* sysdeps/i386/i586/rshift.S: Likewise.
	* sysdeps/i386/i586/strchr.S: Likewise.
	* sysdeps/i386/i586/strlen.S: Likewise.
	* sysdeps/i386/i586/sub_n.S: Likewise.
	* sysdeps/i386/i586/submul_1.S: Likewise.

	* sysdeps/stub/s_log2l.c: Correct function name.

	* time/africa: Updated from ADO tzdata1997e.
	* time/aantarctica: Likewise.
	* time/asia: Likewise.
	* time/australia: Likewise.
	* time/europe: Likewise.
	* time/northamerica: Likewise.
	* time/southamerica: Likewise.
	* time/private.h: Updated from ADO tzcode1997d.
	* time/scheck.c: Likewise.

1997-03-31 12:42  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/powerpc/Dist: Add kernel_*.h files.

1997-03-23 01:41  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/strlen.s: Rewrote for more speed.
	* string/tst-strlen.c: Also test various string alignments.

1997-03-19 06:11  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/statbuf.h: Removed.
	* sysdeps/unix/sysv/linux/powerpc/kernel_stat.h: Added.

	* sysdeps/powerpc/dl-machine.h (ELF_PREFERRED_ADDRESS): Assume
	program base address is 0x01800000 if we can't otherwise tell what
	it is.
	(elf_machine_rela): Replace `assertion failed' with real error
	messages.

	* sysdeps/powerpc/dl-machine.h: More comments, more GNU indenting.
	Put in extra parentheses to make explicit the relative precedence
	of + and >>.

	* sysdeps/powerpc/bsd-setjmp.S: Add `__setjmp' symbol so the tests
	pass.
	* sysdeps/powerpc/clone.S: Rewrite.  Probably still doesn't work.

	* sysdeps/unix/sysv/linux/powerpc/sys/sysdep.h: Use .section "text"
	instead of .text.

1997-03-31 02:28  Ulrich Drepper  <drepper@cygnus.com>

	* misc/tst-tsearch.c: Don't write to stderr, write to stdout
	instead.

	* inet/inet_ntoa.c (inet_ntoa): Complete rewrite.  Now uses
	thread-specific memory in multi-threaded programs.

	* sysdeps/stub/s_exp2.c: New file.  Stub version for exp2 function.
	* sysdeps/stub/s_exp2f.c: New file.
	* sysdeps/stub/s_exp2l.c: New file.
	Reported by a sun <asun@zoology.washington.edu>.

	* sysdeps/unix/sysv/linux/netatalk/atalk.h: Rename to...
	* sysdeps/unix/sysv/linux/netatalk/at.h: ...this.
	Suggested by a sun <asun@zoology.washington.edu>.

1997-03-30 14:53  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/netinet/ip_icmp.h: Add former contents
	of <netinet/icmp.h>.
	Patch by a sun <asun@zoology.washington.edu>.

	* sysdeps/powerpc/strlen.S: Added.
1997-03-31 22:56:24 +00:00

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ArmAsm

/* strtok (str, delim) -- Return next DELIM separated token from STR.
For Intel 80x86, x>=3.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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 <sysdep.h>
#include "asm-syntax.h"
/* This file can be used for three variants of the strtok function:
strtok:
INPUT PARAMETER:
str (sp + 4)
delim (sp + 8)
strtok_r:
INPUT PARAMETER:
str (sp + 4)
delim (sp + 8)
save_ptr (sp + 12)
We do a common implementation here. */
#ifndef USE_AS_STRTOK_R
.bss
.local save_ptr
ASM_TYPE_DIRECTIVE (save_ptr, @object)
.size save_ptr, 4
save_ptr:
.space 4
#define FUNCTION strtok
#endif
.text
ENTRY (FUNCTION)
movl 4(%esp), %edx /* Get start of string. */
movl 8(%esp), %eax /* Get start of delimiter set. */
#if !defined (USE_AS_STRTOK_R) && defined (PIC)
pushl %ebx /* Save PIC register. */
call L(here)
L(here):
popl %ebx
addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ebx
#endif
/* If the pointer is NULL we have to use the stored value of
the last run. */
cmpl $0, %edx
jne L(0)
#ifdef USE_AS_STRTOK_R
/* The value is stored in the third argument. */
movl 12(%esp), %edx
movl (%edx), %edx
#else
/* The value is in the local variable defined above. But
we have to take care for PIC code. */
# ifndef PIC
movl save_ptr, %edx
# else
movl save_ptr@GOTOFF(%ebx), %edx
# endif
#endif
L(0):
/* First we create a table with flags for all possible characters.
For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
supported by the C string functions we have 256 characters.
Before inserting marks for the stop characters we clear the whole
table. The unrolled form is much faster than a loop. */
xorl %ecx, %ecx /* %ecx = 0 !!! */
pushl %ecx /* make a 256 bytes long block filled with 0 */
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
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pushl %ecx
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pushl %ecx
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pushl %ecx
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pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl %ecx
pushl $0 /* These immediate values make the label 2 */
pushl $0 /* to be aligned on a 16 byte boundary to */
pushl $0 /* get a better performance of the loop. */
pushl $0
pushl $0
pushl $0
/* For understanding the following code remember that %ecx == 0 now.
Although all the following instruction only modify %cl we always
have a correct zero-extended 32-bit value in %ecx. */
L(2): movb (%eax), %cl /* get byte from stopset */
testb %cl, %cl /* is NUL char? */
jz L(1) /* yes => start compare loop */
movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
movb 1(%eax), %cl /* get byte from stopset */
testb $0xff, %cl /* is NUL char? */
jz L(1) /* yes => start compare loop */
movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
movb 2(%eax), %cl /* get byte from stopset */
testb $0xff, %cl /* is NUL char? */
jz L(1) /* yes => start compare loop */
movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
movb 3(%eax), %cl /* get byte from stopset */
addl $4, %eax /* increment stopset pointer */
movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
testb $0xff, %cl /* is NUL char? */
jnz L(2) /* no => process next dword from stopset */
L(1): leal -4(%edx), %eax /* prepare loop */
/* We use a neat trick for the following loop. Normally we would
have to test for two termination conditions
1. a character in the stopset was found
and
2. the end of the string was found
As a sign that the character is in the stopset we store its
value in the table. The value of NUL is NUL so the loop
terminates for NUL in every case. */
L(3): addl $4, %eax /* adjust pointer for full loop round */
movb (%eax), %cl /* get byte from string */
testb %cl, (%esp,%ecx) /* is it contained in stopset? */
jz L(4) /* no => start of token */
movb 1(%eax), %cl /* get byte from string */
testb %cl, (%esp,%ecx) /* is it contained in stopset? */
jz L(5) /* no => start of token */
movb 2(%eax), %cl /* get byte from string */
testb %cl, (%esp,%ecx) /* is it contained in stopset? */
jz L(6) /* no => start of token */
movb 3(%eax), %cl /* get byte from string */
testb %cl, (%esp,%ecx) /* is it contained in stopset? */
jnz L(3) /* yes => start of loop */
incl %eax /* adjust pointer */
L(6): incl %eax
L(5): incl %eax
/* Now we have to terminate the string. */
L(4): leal -4(%eax), %edx /* We use %EDX for the next run. */
L(7): addl $4, %edx /* adjust pointer for full loop round */
movb (%edx), %cl /* get byte from string */
cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
je L(8) /* yes => return */
movb 1(%edx), %cl /* get byte from string */
cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
je L(9) /* yes => return */
movb 2(%edx), %cl /* get byte from string */
cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
je L(10) /* yes => return */
movb 3(%edx), %cl /* get byte from string */
cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
jne L(7) /* no => start loop again */
incl %edx /* adjust pointer */
L(10): incl %edx
L(9): incl %edx
L(8): /* Remove the stopset table. */
addl $256, %esp
cmpl %eax, %edx
je L(returnNULL) /* There was no token anymore. */
movb $0, (%edx) /* Terminate string. */
/* Are we at end of string? */
cmpb $0, %cl
je L(11)
incl %edx
L(11):
/* Store the pointer to the next character. */
#ifdef USE_AS_STRTOK_R
movl 12(%esp), %ecx
movl %edx, (%ecx)
#else
# ifndef PIC
movl %edx, save_ptr
# else
movl %edx, save_ptr@GOTOFF(%ebx)
popl %ebx
# endif
#endif
ret
L(returnNULL):
xorl %eax, %eax
/* Store current pointer for next round. */
#ifdef USE_AS_STRTOK_R
movl 12(%esp), %ecx
movl %edx, (%ecx)
#else
# ifndef PIC
movl %edx, save_ptr
# else
movl %edx, save_ptr@GOTOFF(%ebx)
popl %ebx
# endif
#endif
ret
END (FUNCTION)