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author | Ulrich Drepper <drepper@redhat.com> | 1997-03-31 22:56:24 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-03-31 22:56:24 +0000 |
commit | 5929563ff20245bbaa1b3ca2f4bfcee623ac6fb5 (patch) | |
tree | 15b1ff0a40462018402078788148c0c99d188429 /sysdeps/i386/i486/strlen.S | |
parent | 3075e0e37c0e7cc2e6eb518c409e0769d058ed4b (diff) | |
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Update.cvs/libc-ud-970331
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.
Diffstat (limited to 'sysdeps/i386/i486/strlen.S')
-rw-r--r-- | sysdeps/i386/i486/strlen.S | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/sysdeps/i386/i486/strlen.S b/sysdeps/i386/i486/strlen.S index a92067ab41..4a25011016 100644 --- a/sysdeps/i386/i486/strlen.S +++ b/sysdeps/i386/i486/strlen.S @@ -1,23 +1,23 @@ /* strlen(str) -- determine the length of the string STR. -Optimized for Intel 80x86, x>=4. -Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc. -Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>. -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. */ + Optimized for Intel 80x86, x>=4. + Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. + Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>. + 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 <sysdep.h> #include "asm-syntax.h" @@ -33,21 +33,21 @@ ENTRY (strlen) movl %ecx, %eax /* duplicate it */ andl $3, %ecx /* mask alignment bits */ - jz L1 /* aligned => start loop */ + jz L(1) /* aligned => start loop */ cmpb %ch, (%eax) /* is byte NUL? */ - je L2 /* yes => return */ + je L(2) /* yes => return */ incl %eax /* increment pointer */ xorl $3, %ecx /* was alignment = 3? */ - jz L1 /* yes => now it is aligned and start loop */ + jz L(1) /* yes => now it is aligned and start loop */ cmpb %ch, (%eax) /* is byte NUL? */ - je L2 /* yes => return */ + je L(2) /* yes => return */ addl $1, %eax /* increment pointer */ subl $1, %ecx /* was alignment = 2? */ - jz L1 /* yes => now it is aligned and start loop */ + jz L(1) /* yes => now it is aligned and start loop */ cmpb %ch, (%eax) /* is byte NUL? */ - je L2 /* yes => return */ + je L(2) /* yes => return */ /* Don't change the above `addl $1,%eax' and `subl $1, %ecx' into `incl %eax' and `decl %ecx' resp. The additional two byte per instruction make the @@ -61,73 +61,73 @@ ENTRY (strlen) subl $15, %eax /* effectively +1 */ -L4: addl $16, %eax /* adjust pointer for full loop */ +L(4): addl $16, %eax /* adjust pointer for full loop */ -L1: movl (%eax), %ecx /* get word (= 4 bytes) in question */ +L(1): movl (%eax), %ecx /* get word (= 4 bytes) in question */ movl $0xfefefeff, %edx /* magic value */ addl %ecx, %edx /* add the magic value to the word. We get carry bits reported for each byte which is *not* 0 */ - jnc L3 /* highest byte is NUL => return pointer */ + jnc L(3) /* highest byte is NUL => return pointer */ xorl %ecx, %edx /* (word+magic)^word */ orl $0xfefefeff, %edx /* set all non-carry bits */ incl %edx /* add 1: if one carry bit was *not* set the addition will not result in 0. */ - jnz L3 /* found NUL => return pointer */ + jnz L(3) /* found NUL => return pointer */ movl 4(%eax), %ecx /* get word (= 4 bytes) in question */ movl $0xfefefeff, %edx /* magic value */ addl %ecx, %edx /* add the magic value to the word. We get carry bits reported for each byte which is *not* 0 */ - jnc L5 /* highest byte is NUL => return pointer */ + jnc L(5) /* highest byte is NUL => return pointer */ xorl %ecx, %edx /* (word+magic)^word */ orl $0xfefefeff, %edx /* set all non-carry bits */ incl %edx /* add 1: if one carry bit was *not* set the addition will not result in 0. */ - jnz L5 /* found NUL => return pointer */ + jnz L(5) /* found NUL => return pointer */ movl 8(%eax), %ecx /* get word (= 4 bytes) in question */ movl $0xfefefeff, %edx /* magic value */ addl %ecx, %edx /* add the magic value to the word. We get carry bits reported for each byte which is *not* 0 */ - jnc L6 /* highest byte is NUL => return pointer */ + jnc L(6) /* highest byte is NUL => return pointer */ xorl %ecx, %edx /* (word+magic)^word */ orl $0xfefefeff, %edx /* set all non-carry bits */ incl %edx /* add 1: if one carry bit was *not* set the addition will not result in 0. */ - jnz L6 /* found NUL => return pointer */ + jnz L(6) /* found NUL => return pointer */ movl 12(%eax), %ecx /* get word (= 4 bytes) in question */ movl $0xfefefeff, %edx /* magic value */ addl %ecx, %edx /* add the magic value to the word. We get carry bits reported for each byte which is *not* 0 */ - jnc L7 /* highest byte is NUL => return pointer */ + jnc L(7) /* highest byte is NUL => return pointer */ xorl %ecx, %edx /* (word+magic)^word */ orl $0xfefefeff, %edx /* set all non-carry bits */ incl %edx /* add 1: if one carry bit was *not* set the addition will not result in 0. */ - jz L4 /* no NUL found => continue loop */ + jz L(4) /* no NUL found => continue loop */ -L7: addl $4, %eax /* adjust pointer */ -L6: addl $4, %eax -L5: addl $4, %eax +L(7): addl $4, %eax /* adjust pointer */ +L(6): addl $4, %eax +L(5): addl $4, %eax -L3: testb %cl, %cl /* is first byte NUL? */ - jz L2 /* yes => return */ +L(3): testb %cl, %cl /* is first byte NUL? */ + jz L(2) /* yes => return */ incl %eax /* increment pointer */ testb %ch, %ch /* is second byte NUL? */ - jz L2 /* yes => return */ + jz L(2) /* yes => return */ incl %eax /* increment pointer */ testl $0xff0000, %ecx /* is third byte NUL? */ - jz L2 /* yes => return pointer */ + jz L(2) /* yes => return pointer */ incl %eax /* increment pointer */ -L2: subl 4(%esp), %eax /* compute difference to string start */ +L(2): subl 4(%esp), %eax /* compute difference to string start */ ret END (strlen) |