3dbfd8117c
2004-05-27 Jakub Jelinek <jakub@redhat.com> * sysdeps/i386/fpu/bits/mathinline.h (__expm1_code): Define using __builtin_expm1l for GCC 3.5+. (__expl): Define using __builtin_expl for GCC 3.4+. (exp, expf, expl): Don't define for GCC 3.4+. (tan, tanf, tanl): Don't define for GCC 3.5+. (__atan2l): Define using __builtin_atan2l for GCC 3.4+. (atan2, atan2f, atan2l): Don't define for GCC 3.4+ or !__FAST_MATH__. (fmod, fmodf, fmodl): Don't define for GCC 3.5+ or !__FAST_MATH__. (fabsf, fabsl): Only provide if __USE_MISC or __USE_ISOC99. (sin, sinf, sinl, cos, cosf, cosl, log, logf, logl): Don't define for GCC 3.4+. (log10, log10f, log10l, asin, asinf, asinl, acos, acosf, acosl): Don't define for GCC 3.5+. (atan, atanf, atanl): Don't define for GCC 3.4+ or !__FAST_MATH__. (log1p, log1pf, log1pl, logb, logbf, logbl, log2, log2f, log2l): Don't define for GCC 3.5+. (drem, dremf, dreml): Don't define for GCC 3.5+ or !__FAST_MATH__. * sysdeps/sparc/fpu/bits/mathinline.h (sqrt, sqrtf, sqrtl): Don't define for GCC 3.2+. 2004-05-27 Jakub Jelinek <jakub@redhat.com> * string/bits/string2.h (__bzero): Define even for GCC 3.0+. * sysdeps/alpha/stpcpy.S (stpcpy): Add libc_hidden_builtin_def. * sysdeps/alpha/alphaev67/stpcpy.S (stpcpy): Likewise. * sysdeps/powerpc/powerpc32/stpcpy.S (stpcpy): Likewise. * sysdeps/powerpc/powerpc64/stpcpy.S (stpcpy): Likewise. * sysdeps/sparc/sparc32/stpcpy.S (stpcpy): Likewise. * sysdeps/sparc/sparc64/stpcpy.S (stpcpy): Likewise. * sysdeps/i386/stpcpy.S (stpcpy): Likewise. * sysdeps/i386/i586/stpcpy.S (stpcpy): Likewise. * sysdeps/generic/stpcpy.c (stpcpy): Likewise. * sysdeps/x86_64/stpcpy.S (stpcpy): Likewise. * sysdeps/i386/i586/memcpy.S (memcpy): Remove libc_hidden_builtin_def if MEMPCPY_P. * sysdeps/x86_64/memcpy.S (memcpy): Likewise. * sysdeps/i386/i686/mempcpy.S (mempcpy): Add libc_hidden_builtin_def. * sysdeps/i386/i586/mempcpy.S (mempcpy): Likewise. * sysdeps/generic/mempcpy.c (mempcpy): Likewise. * sysdeps/x86_64/mempcpy.S (mempcpy): Likewise.
123 lines
3.3 KiB
ArmAsm
123 lines
3.3 KiB
ArmAsm
/* Optimized stpcpy implementation for PowerPC64.
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Copyright (C) 1997, 1999, 2000, 2002, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <bp-sym.h>
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#include <bp-asm.h>
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/* See strlen.s for comments on how the end-of-string testing works. */
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/* char * [r3] stpcpy (char *dest [r3], const char *src [r4]) */
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EALIGN (BP_SYM (__stpcpy), 4, 0)
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#define rTMP r0
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#define rRTN r3
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#if __BOUNDED_POINTERS__
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# define rDEST r4 /* pointer to previous word in dest */
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# define rSRC r5 /* pointer to previous word in src */
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# define rLOW r11
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# define rHIGH r12
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#else
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# define rDEST r3 /* pointer to previous word in dest */
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# define rSRC r4 /* pointer to previous word in src */
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#endif
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#define rWORD r6 /* current word from src */
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#define rFEFE r7 /* 0xfefefeff */
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#define r7F7F r8 /* 0x7f7f7f7f */
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#define rNEG r9 /* ~(word in src | 0x7f7f7f7f) */
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#define rALT r10 /* alternate word from src */
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CHECK_BOUNDS_LOW (rSRC, rLOW, rHIGH)
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CHECK_BOUNDS_LOW (rDEST, rLOW, rHIGH)
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STORE_RETURN_BOUNDS (rLOW, rHIGH)
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or rTMP, rSRC, rDEST
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clrldi. rTMP, rTMP, 62
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addi rDEST, rDEST, -4
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bne L(unaligned)
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lis rFEFE, -0x101
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lis r7F7F, 0x7f7f
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lwz rWORD, 0(rSRC)
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addi rFEFE, rFEFE, -0x101
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addi r7F7F, r7F7F, 0x7f7f
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b L(g2)
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L(g0): lwzu rALT, 4(rSRC)
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stwu rWORD, 4(rDEST)
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add rTMP, rFEFE, rALT
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nor rNEG, r7F7F, rALT
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and. rTMP, rTMP, rNEG
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bne- L(g1)
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lwzu rWORD, 4(rSRC)
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stwu rALT, 4(rDEST)
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L(g2): add rTMP, rFEFE, rWORD
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nor rNEG, r7F7F, rWORD
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and. rTMP, rTMP, rNEG
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beq+ L(g0)
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mr rALT, rWORD
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/* We've hit the end of the string. Do the rest byte-by-byte. */
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L(g1): rlwinm. rTMP, rALT, 8, 24, 31
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stbu rTMP, 4(rDEST)
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beqlr-
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rlwinm. rTMP, rALT, 16, 24, 31
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stbu rTMP, 1(rDEST)
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beqlr-
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rlwinm. rTMP, rALT, 24, 24, 31
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stbu rTMP, 1(rDEST)
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beqlr-
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stbu rALT, 1(rDEST)
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CHECK_BOUNDS_HIGH (rDEST, rHIGH, twlgt)
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STORE_RETURN_VALUE (rDEST)
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blr
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/* Oh well. In this case, we just do a byte-by-byte copy. */
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.align 4
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nop
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L(unaligned):
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lbz rWORD, 0(rSRC)
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addi rDEST, rDEST, 3
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cmpwi rWORD, 0
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beq- L(u2)
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L(u0): lbzu rALT, 1(rSRC)
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stbu rWORD, 1(rDEST)
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cmpwi rALT, 0
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beq- L(u1)
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nop /* Let 601 load start of loop. */
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lbzu rWORD, 1(rSRC)
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stbu rALT, 1(rDEST)
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cmpwi rWORD, 0
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bne+ L(u0)
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L(u2): stbu rWORD, 1(rDEST)
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CHECK_BOUNDS_HIGH (rDEST, rHIGH, twlgt)
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STORE_RETURN_VALUE (rDEST)
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blr
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L(u1): stbu rALT, 1(rDEST)
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CHECK_BOUNDS_HIGH (rDEST, rHIGH, twlgt)
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STORE_RETURN_VALUE (rDEST)
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blr
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END (BP_SYM (__stpcpy))
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weak_alias (BP_SYM (__stpcpy), BP_SYM (stpcpy))
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libc_hidden_def (__stpcpy)
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libc_hidden_builtin_def (stpcpy)
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