From 650425ceb40e840b2123b6c8cc65389589f41218 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 24 Sep 1997 23:03:42 +0000 Subject: Update. 1997-09-25 00:23 Ulrich Drepper * elf/dl-profile.c: Correct implementation. * io/ftwtest-sh: Don't depend on TMPDIR == /tmp. * locale/setlocale.c: Rewrite a bit for more clarity. * math/Makefile (libm-calls): Add w_exp2. * math/math_private.h: Add prototypes for __ieee754_exp2{,f,l}. * sysdeps/libm-i387/s_exp2.S: Change name to __ieee754_exp2. * sysdeps/libm-i387/s_exp2f.S: Likewise. * sysdeps/libm-i387/s_exp2l.S: Likewise. * sysdeps/libm-ieee754/k_standard.c: Add error cases for exp2. * string/bits/string2.h (__strcpy_small): Optimize. (__stpcpy_small): Likewise. (strncpy): Use variable for dest argument since it's used more than once. (strncat): Likewise. (strcmp): Add optimization for this function. * sysdeps/i386/i486/string.h (strlen): Correctly use __builtin_strlen. (__strcpy_small): Optimize. (__stpcpy_small): Likewise. (__stpcpy_c): Correctly use __mempcpy_* macros. (__mempcpy_by2, __mempcpy_by4, __mempcpy_byn): Return pointer to byte following last copied. (strncat): Use variable for dest argument since it's used more than once. (strcmp): Add optimization for this function. * sysdeps/i386/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE): Use .text and .previous to select correct section. 1997-09-23 19:56 Philip Blundell * configure.in: Add `--disable-versioning' option to suppress the use of symbol versions even if binutils claims to support it. 1997-09-24 20:10 Philip Blundell * csu/Makefile (before-compile): Don't try to build abi-tags.h if not using ELF. 1997-09-21 Andreas Schwab * elf/sofini.c [HAVE_DWARF2_UNWIND_INFO]: Supply termination for the frame unwind info section. * elf/soinit.c [HAVE_DWARF2_UNWIND_INFO]: Register and unregister the frame unwind info. * config.h.in (HAVE_DWARF2_UNWIND_INFO): Add #undef. * configure.in: Check whether gcc supports DWARF2 unwind info. * libc.map: Export frame handling tables. 1997-09-10 06:56 Geoff Keating * sysdeps/unix/sysv/linux/powerpc/bits/kernel_termios.h: Use the size of the kernel's termios structure for ioctls. * sysdeps/powerpc/dl-machine.h: Prepare for library profiling. * sysdeps/powerpc/bits/mathinline.h: Add slightly slower versions of the C9X FP comparison macros. Delete 'fabs' and 'sqrt' inline routines, because gcc has them as internals. * sysdeps/powerpc/Makefile (pic-ccflags): Define this instead of CFLAGS-.os. * sysdeps/powerpc/bzero.S: New file. * sysdeps/powerpc/strcat.c: New file. * sysdeps/powerpc/strcpy.S: New file. * sysdeps/powerpc/stpcpy.S: New file. * math/Makefile: Add atest_exp2, test-reduce. * math/atest_exp2.c: New file. * math/test-reduce.c: New file. * sysdeps/libm-ieee754/Dist: New file. * sysdeps/libm-ieee754/s_exp2.c: New file. * sysdeps/libm-ieee754/s_exp2f.c: New file. * sysdeps/libm-ieee754/t_exp2.h: New file. * sysdeps/libm-ieee754/t_exp2f.h: New file. * math/libm-test.c (exp2_test): Add some more tests. * Rules: Use empty.os instead of empty.o, since it gets linked into libc.so... * configure.in: Add --disable-static to disable building .a files. * config.make.in: Substitute the new variable. * Makeconfig: Don't build .o files if not building .a files. * elf/dl-runtime.c (fixup): Factor out call to elf_machine_relplt. (profile_fixup): Likewise. 1997-09-23 Andreas Schwab * posix/globtest.c (main): Change to directory passed as first argument. * posix/globtest.sh: Don't cd before running the program, instead pass testdir as argument, so that $common_objpfx remains valid. 1997-09-23 18:01 Thorsten Kukuk * nis/nis_call.c (__do_niscall2): Fix multiple Server support. * nis/nis_findserver.c: Save latest working sockaddr_in. 1997-09-17 22:07 Zack Weinberg * configure.in: Automatically determine whether as and ld are the GNU versions. (options): --with-gnu-{as,ld,binutils} replaced by single option --with-binutils=PATH specifying a -B option to gcc. * aclocal.m4: Two new macros defined, LIBC_PROG_FOO_GNU and LIBC_PROG_BINUTILS. * configure.in: Allow the user to force configuration for unsupported platforms with an undocumented option. 1997-09-22 16:55 Thorsten Kukuk * sunrpc/get_myaddr.c (get_myaddress): Avoid loopback interfaces, return loopback address only if there is no other interface. * nis/Makefile: Add nis_callback libnsl-routines. * nis/nis_add.c: Use new __do_niscall* interface. * nis/nis_cache.c: Likewise. * nis/nis_checkpoint.c: Likewise. * nis/nis_lookup.c: Likewise. * nis/nis_mkdir.c: Likewise. * nis/nis_modify.c: Likewise. * nis/nis_ping.c: Likewise. * nis/nis_remove.c: Likewise. * nis/nis_rmdir.c: Likewise. * nis/nis_server.c: Likewise. * nis/nis_util.c: Likewise. * nis/rpcsvc/nis.h: Make C++ safe. * nis/nss_nisplus/nisplus-publickey.c (getsecretkey): Fix use of variables. * nis/nis_findserv.c: Make thread safe. * nis/nis_call.c: Add support for callback, Fix use of variables. * nis/nis_table.c: Add support for callback, FOLLOW_PATH and ALL_RESULTS. * nis/nis_callback.c: New, callback functions. * nis/nis_intern.h: Add callback declarations. 1997-09-20 Andreas Schwab * string/bits/string2.h: Fix logic in preprocessor directive. (__strsep_1c, __strsep_g): Don't declare __retval as pointing to const, to save a cast and a possible warning. 1997-09-22 04:12 Ulrich Drepper * sysdeps/i386/i486/atomicity.h (exchange_and_add): Really address memory in xadd not %1. 1997-09-21 13:56 Ulrich Drepper * manual/maint.texi (Supported Configurations): Add SPARC64 to list of supported platforms. --- sysdeps/powerpc/strcpy.S | 100 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 sysdeps/powerpc/strcpy.S (limited to 'sysdeps/powerpc/strcpy.S') diff --git a/sysdeps/powerpc/strcpy.S b/sysdeps/powerpc/strcpy.S new file mode 100644 index 0000000000..3c0cce7844 --- /dev/null +++ b/sysdeps/powerpc/strcpy.S @@ -0,0 +1,100 @@ +/* Optimized strcpy implementation for PowerPC. + Copyright (C) 1997 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 + +/* See strlen.s for comments on how the end-of-string testing works. */ + +EALIGN(strcpy,4,0) +/* char * [r3] strcpy (char *dest [r3], const char *src [r4]) */ + +/* General register assignments: + r0: temporary + r3: saved `dest' + r4: pointer to previous word in src + r5: pointer to previous word in dest + r6: current word from src + r7: 0xfefefeff + r8: 0x7f7f7f7f + r9: ~(word in src | 0x7f7f7f7f) + r10: alternate word from src. */ + + or %r0,%r4,%r3 + clrlwi. %r0,%r0,30 + addi %r5,%r3,-4 + bne L(unaligned) + + lis %r7,0xfeff + lis %r8,0x7f7f + lwz %r6,0(%r4) + addi %r7,%r7,-0x101 + addi %r8,%r8,0x7f7f + b 2f + +0: lwzu %r10,4(%r4) + stwu %r6,4(%r5) + add %r0,%r7,%r10 + nor %r9,%r8,%r10 + and. %r0,%r0,%r9 + bne- 1f + lwzu %r6,4(%r4) + stwu %r10,4(%r5) +2: add %r0,%r7,%r6 + nor %r9,%r8,%r6 + and. %r0,%r0,%r9 + beq+ 0b + + mr %r10,%r6 +/* We've hit the end of the string. Do the rest byte-by-byte. */ +1: rlwinm. %r0,%r10,8,24,31 + stb %r0,4(%r5) + beqlr- + rlwinm. %r0,%r10,16,24,31 + stb %r0,5(%r5) + beqlr- + rlwinm. %r0,%r10,24,24,31 + stb %r0,6(%r5) + beqlr- + stb %r10,7(%r5) + blr + +/* Oh well. In this case, we just do a byte-by-byte copy. */ + .align 4 + nop +L(unaligned): + lbz %r6,0(%r4) + addi %r5,%r3,-1 + cmpwi %r6,0 + beq- 2f + +0: lbzu %r10,1(%r4) + stbu %r6,1(%r5) + cmpwi %r10,0 + beq- 1f + nop /* Let 601 load start of loop. */ + lbzu %r6,1(%r4) + stbu %r10,1(%r5) + cmpwi %r6,0 + bne+ 0b +2: stb %r6,1(%r5) + blr +1: stb %r10,1(%r5) + blr + +END(strcpy) -- cgit v1.2.3