mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 02:10:05 +00:00
92b27c7470
2002-07-29 Steven Munroe <sjmunroe@us.ibm.com> * sysdeps/powerpc/__longjmp.S: Moved to... * sysdeps/powerpc/powerpc32/__longjmp.S: ...here. * sysdeps/powerpc/add_n.S: Moved to... * sysdeps/powerpc/powerpc32/add_n.S: ...here. * sysdeps/powerpc/addmul_1.S: Moved to... * sysdeps/powerpc/powerpc32/addmul_1.S: ...here. * sysdeps/powerpc/atomicity.h: Moved to... * sysdeps/powerpc/powerpc32/atomicity.h: ...here. * sysdeps/powerpc/backtrace.c: Moved to... * sysdeps/powerpc/powerpc32/backtrace.c: ...here. * sysdeps/powerpc/bp-asm.h: Moved to... * sysdeps/powerpc/powerpc32/bp-asm.h: ...here. * sysdeps/powerpc/bsd-_setjmp.S: Moved to... * sysdeps/powerpc/powerpc32/bsd-_setjmp.S: ...here. * sysdeps/powerpc/bsd-setjmp.S: Moved to... * sysdeps/powerpc/powerpc32/bsd-setjmp.S: ...here. * sysdeps/powerpc/dl-machine.c: Moved to... * sysdeps/powerpc/powerpc32/dl-machine.c: ...here. * sysdeps/powerpc/dl-machine.h: Moved to... * sysdeps/powerpc/powerpc32/dl-machine.h: ...here. * sysdeps/powerpc/dl-start.S: Moved to... * sysdeps/powerpc/powerpc32/dl-start.S: ...here. * sysdeps/powerpc/gprrest0.S: Moved to... * sysdeps/powerpc/powerpc32/gprrest0.S: ...here. * sysdeps/powerpc/gprrest1.S: Moved to... * sysdeps/powerpc/powerpc32/gprrest1.S: ...here. * sysdeps/powerpc/gprsave0.S: Moved to... * sysdeps/powerpc/powerpc32/gprsave0.S: ...here. * sysdeps/powerpc/gprsave1.S: Moved to... * sysdeps/powerpc/powerpc32/gprsave1.S: ...here. * sysdeps/powerpc/lshift.S: Moved to... * sysdeps/powerpc/powerpc32/lshift.S: ...here. * sysdeps/powerpc/memset.S: Moved to... * sysdeps/powerpc/powerpc32/memset.S: ...here. * sysdeps/powerpc/mul_1.S: Moved to... * sysdeps/powerpc/powerpc32/mul_1.S: ...here. * sysdeps/powerpc/ppc-mcount.S: Moved to... * sysdeps/powerpc/powerpc32/ppc-mcount.S: ...here. * sysdeps/powerpc/register-dump.h: Moved to... * sysdeps/powerpc/powerpc32/register-dump.h: ...here. * sysdeps/powerpc/rshift.S: Moved to... * sysdeps/powerpc/powerpc32/rshift.S: ...here. * sysdeps/powerpc/setjmp.S: Moved to... * sysdeps/powerpc/powerpc32/setjmp.S: ...here. * sysdeps/powerpc/stpcpy.S: Moved to... * sysdeps/powerpc/powerpc32/stpcpy.S: ...here. * sysdeps/powerpc/strchr.S: Moved to... * sysdeps/powerpc/powerpc32/strchr.S: ...here. * sysdeps/powerpc/strcmp.S: Moved to... * sysdeps/powerpc/powerpc32/strcmp.S: ...here. * sysdeps/powerpc/strcpy.S: Moved to... * sysdeps/powerpc/powerpc32/strcpy.S: ...here. * sysdeps/powerpc/strlen.S: Moved to... * sysdeps/powerpc/powerpc32/strlen.S: ...here. * sysdeps/powerpc/sub_n.S: Moved to... * sysdeps/powerpc/powerpc32/sub_n.S: ...here. * sysdeps/powerpc/submul_1.S: Moved to... * sysdeps/powerpc/powerpc32/submul_1.S: ...here. * sysdeps/powerpc/elf/bzero.S: Moved to... * sysdeps/powerpc/powerpc32/elf/bzero.S: ...here. * sysdeps/powerpc/elf/start.S: Moved to... * sysdeps/powerpc/powerpc32/elf/start.S: ...here. * sysdeps/powerpc/fpu/__longjmp.S: Moved to... * sysdeps/powerpc/powerpc32/fpu/__longjmp.S: ...here. * sysdeps/powerpc/fpu/fprrest.S: Moved to... * sysdeps/powerpc/powerpc32/fpu/fprrest.S: ...here. * sysdeps/powerpc/fpu/fprsave.S: Moved to... * sysdeps/powerpc/powerpc32/fpu/fprsave.S: ...here. * sysdeps/powerpc/fpu/setjmp.S: Moved to... * sysdeps/powerpc/powerpc32/fpu/setjmp.S: ...here. * sysdeps/powerpc/fpu/s_copysign.S: Moved to... * sysdeps/powerpc/powerpc32/fpu/s_copysign.S: ...here. * sysdeps/powerpc/fpu/s_copysignf.S: Moved to... * sysdeps/powerpc/powerpc32/fpu/s_copysignf.S: ...here. * sysdeps/unix/sysv/linux/powerpc/brk.S: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S: ...here. * sysdeps/unix/sysv/linux/powerpc/clone.S: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: ...here. * sysdeps/unix/sysv/linux/powerpc/glob64.c: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c: ...here. * sysdeps/unix/sysv/linux/powerpc/kernel_stat.h: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h: ...here. * sysdeps/unix/sysv/linux/powerpc/socket.S: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S: ...here. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: ...here. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Moved to... * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: ...here. Support PowerPC64. Separate powerpc into powerpc/powerpc32 and powerpc/powerpc64. 2002-07-29 Steven Munroe <sjmunroe@us.ibm.com> * FAQ.in: Add powerpc64 to supported targets list. Also state the minimum gcc version is 3.2 * README: Add powerpc64 to supported targets list. * configure.in: Change machine=powerpc to machine=powerpc/powerpc32. Add powerpc64 and machine=powerpc/powerpc64. (HAVE_ASM_GLOBAL_DOT_NAME): Define if linux*powerpc/powerpc64*. * shlib-versions: Set DEFAULT version to 2.2.5 for powerpc64. * sysdeps/powerpc/Dist: Remove dl-machine.c, dl-start.S, ppc-mcount.S, gprsave1.S, gprsave0.S, gprrest1.S, and gprrest0.S. * sysdeps/powerpc/powerpc32/Dist: New file. * sysdeps/powerpc/Implies: Remove wordsize-32 and powerpc/soft-fp. * sysdeps/powerpc/powerpc32/Implies: New file. * sysdeps/powerpc/Makefile(cflags): Remove powerpc32 specific cflags. ($(with-fp) = no): Move test to powerpc32/Makefile. ($(subdir) = misc): Move to powerpc32/Makefile. ($(build-shared) = yes): Move to powerpc32/Makefile. ($(subdir) = csu): Move to powerpc32/Makefile. (sysdep-rtld-routines): Remove dl-start. Moved these bits to ... * sysdeps/powerpc/powerpc32/Makefile: New file. * sysdeps/powerpc/Versions: Remove libgcc functions. * sysdeps/powerpc/powerpc32/Versions: New file. * sysdeps/powerpc/fpu/Makefile: Remove fprsave and fprrest. * sysdeps/powerpc/powerpc32/fpu/Makefile: New file. * sysdeps/unix/sysv/linux/configure.in (powerpc*): Set arch_minimum_kernel=2.4.19 for powerpc/powerpc64. Also set libc_cv_gcc_unwind_find_fde=yes only if !powerpc/powerpc64. ($machine): Add powerpc/powerpc64 to if ... | for libc_cv_slibdir=/libc64. (powerpc*): Set ldd_rewrite_script. * sysdeps/unix/sysv/linux/powerpc/ldd-rewrite.sed: New file. * sysdeps/unix/sysv/linux/powerpc/Dist: Remove clone.S. * sysdeps/unix/sysv/linux/powerpc/powerpc32/Dist: New file. Add clone.S. * sysdeps/unix/sysv/linux/powerpc/Makefile: Remove oldgetrlimit64. * sysdeps/unix/sysv/linux/powerpc/Versions: Remove GLIBC_2.0 functions. Remove GLIBC_2.2 functions except getrlimit and setrlimit. Moved them to ... * sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions: New file. 2002-09-04 Ulrich Drepper <drepper@redhat.com> * libio/tst-atime.c: Include <errno.h>. (do_test): Only perform fstatvfs check if ST_NOATIME is defined. 2002-09-03 Isamu Hasegawa <isamu@yamato.ibm.com> * posix/regcomp.c (regcomp): Append "__restrict" modifier to avoid warnings of some compilers. (build_collating_symbol): Change the type of characters from "unsigned char" to "char", and append a cast to "char*" pointer in array subscript. (build_collating_symbol): Likewise. (build_equiv_class): Likewise. (build_charclass): Likewise. (re_compile_pattern): Remove incorrect cast. (re_compile_fastmap_iter): Change the type of characters from "unsigned char" to "char", and append a cast to "char*" pointer in array subscript. (parse_bracket_exp): Likewise. * posix/regex_internal.c (re_string_construct_common): Likewise. (re_string_allocate): Likewise. (re_string_construct): Likewise. (re_string_realloc_buffers): Likewise. (build_wcs_buffer): Likewise. (re_string_reconstruct): Likewise. * posix/regex_internal.h: Change the type of characters in re_string_t and bracket_elem_t from "unsigned char" to "char". * posix/regexec.c (regexec): Append "__restrict" modifier to avoid warnings of some compilers. (transit_state_bkref_loop): Change the type of characters from "unsigned char" to "char", and append a cast to "char*" pointer in array subscript. (check_node_accept_bytes): Likewise. (find_collation_sequence_value): Likewise.
127 lines
3.3 KiB
ArmAsm
127 lines
3.3 KiB
ArmAsm
/* Optimized strcmp implementation for PowerPC.
|
|
Copyright (C) 1997, 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 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <bp-sym.h>
|
|
#include <bp-asm.h>
|
|
|
|
/* See strlen.s for comments on how the end-of-string testing works. */
|
|
|
|
/* int [r3] strcmp (const char *s1 [r3], const char *s2 [r4]) */
|
|
|
|
EALIGN (BP_SYM (strcmp), 4, 0)
|
|
|
|
#define rTMP r0
|
|
#define rRTN r3
|
|
#define rSTR1 r3 /* first string arg */
|
|
#define rSTR2 r4 /* second string arg */
|
|
#if __BOUNDED_POINTERS__
|
|
# define rHIGH1 r11
|
|
# define rHIGH2 r12
|
|
#endif
|
|
#define rWORD1 r5 /* current word in s1 */
|
|
#define rWORD2 r6 /* current word in s2 */
|
|
#define rFEFE r7 /* constant 0xfefefeff (-0x01010101) */
|
|
#define r7F7F r8 /* constant 0x7f7f7f7f */
|
|
#define rNEG r9 /* ~(word in s1 | 0x7f7f7f7f) */
|
|
#define rBITDIF r10 /* bits that differ in s1 & s2 words */
|
|
|
|
CHECK_BOUNDS_LOW (rSTR1, rTMP, rHIGH1)
|
|
CHECK_BOUNDS_LOW (rSTR2, rTMP, rHIGH2)
|
|
|
|
or rTMP, rSTR2, rSTR1
|
|
clrlwi. rTMP, rTMP, 30
|
|
lis rFEFE, -0x101
|
|
bne L(unaligned)
|
|
|
|
lwz rWORD1, 0(rSTR1)
|
|
lwz rWORD2, 0(rSTR2)
|
|
lis r7F7F, 0x7f7f
|
|
addi rFEFE, rFEFE, -0x101
|
|
addi r7F7F, r7F7F, 0x7f7f
|
|
b L(g1)
|
|
|
|
L(g0): lwzu rWORD1, 4(rSTR1)
|
|
bne cr1, L(different)
|
|
lwzu rWORD2, 4(rSTR2)
|
|
L(g1): add rTMP, rFEFE, rWORD1
|
|
nor rNEG, r7F7F, rWORD1
|
|
and. rTMP, rTMP, rNEG
|
|
cmpw cr1, rWORD1, rWORD2
|
|
beq+ L(g0)
|
|
L(endstring):
|
|
/* OK. We've hit the end of the string. We need to be careful that
|
|
we don't compare two strings as different because of gunk beyond
|
|
the end of the strings... */
|
|
and rTMP, r7F7F, rWORD1
|
|
beq cr1, L(equal)
|
|
add rTMP, rTMP, r7F7F
|
|
xor. rBITDIF, rWORD1, rWORD2
|
|
andc rNEG, rNEG, rTMP
|
|
blt- L(highbit)
|
|
cntlzw rBITDIF, rBITDIF
|
|
cntlzw rNEG, rNEG
|
|
addi rNEG, rNEG, 7
|
|
cmpw cr1, rNEG, rBITDIF
|
|
sub rRTN, rWORD1, rWORD2
|
|
bgelr+ cr1
|
|
L(equal):
|
|
li rRTN, 0
|
|
/* GKM FIXME: check high bounds. */
|
|
blr
|
|
|
|
L(different):
|
|
lwz rWORD1, -4(rSTR1)
|
|
xor. rBITDIF, rWORD1, rWORD2
|
|
sub rRTN, rWORD1, rWORD2
|
|
bgelr+
|
|
L(highbit):
|
|
ori rRTN, rWORD2, 1
|
|
/* GKM FIXME: check high bounds. */
|
|
blr
|
|
|
|
|
|
/* Oh well. In this case, we just do a byte-by-byte comparison. */
|
|
.align 4
|
|
L(unaligned):
|
|
lbz rWORD1, 0(rSTR1)
|
|
lbz rWORD2, 0(rSTR2)
|
|
b L(u1)
|
|
|
|
L(u0): lbzu rWORD1, 1(rSTR1)
|
|
bne- L(u4)
|
|
lbzu rWORD2, 1(rSTR2)
|
|
L(u1): cmpwi cr1, rWORD1, 0
|
|
beq- cr1, L(u3)
|
|
cmpw rWORD1, rWORD2
|
|
bne- L(u3)
|
|
lbzu rWORD1, 1(rSTR1)
|
|
lbzu rWORD2, 1(rSTR2)
|
|
cmpwi cr1, rWORD1, 0
|
|
cmpw rWORD1, rWORD2
|
|
bne+ cr1, L(u0)
|
|
L(u3): sub rRTN, rWORD1, rWORD2
|
|
/* GKM FIXME: check high bounds. */
|
|
blr
|
|
L(u4): lbz rWORD1, -1(rSTR1)
|
|
sub rRTN, rWORD1, rWORD2
|
|
/* GKM FIXME: check high bounds. */
|
|
blr
|
|
END (BP_SYM (strcmp))
|