diff options
Diffstat (limited to 'sysdeps')
69 files changed, 4608 insertions, 59 deletions
diff --git a/sysdeps/powerpc/powerpc32/970/Implies b/sysdeps/powerpc/powerpc32/970/Implies index 4e3a983426..17139bf21c 100644 --- a/sysdeps/powerpc/powerpc32/970/Implies +++ b/sysdeps/powerpc/powerpc32/970/Implies @@ -1 +1,2 @@ +powerpc/powerpc32/power4/fpu powerpc/powerpc32/power4 diff --git a/sysdeps/powerpc/powerpc32/power5+/Implies b/sysdeps/powerpc/powerpc32/power5+/Implies index 4e3a983426..a51d2fdf95 100644 --- a/sysdeps/powerpc/powerpc32/power5+/Implies +++ b/sysdeps/powerpc/powerpc32/power5+/Implies @@ -1 +1,2 @@ -powerpc/powerpc32/power4 +powerpc/powerpc32/power5/fpu +powerpc/powerpc32/power5 diff --git a/sysdeps/powerpc/powerpc32/power5+/fpu/Implies b/sysdeps/powerpc/powerpc32/power5+/fpu/Implies deleted file mode 100644 index 7c16e45c29..0000000000 --- a/sysdeps/powerpc/powerpc32/power5+/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc32/power4/fpu diff --git a/sysdeps/powerpc/powerpc32/power5/Implies b/sysdeps/powerpc/powerpc32/power5/Implies index 4e3a983426..17139bf21c 100644 --- a/sysdeps/powerpc/powerpc32/power5/Implies +++ b/sysdeps/powerpc/powerpc32/power5/Implies @@ -1 +1,2 @@ +powerpc/powerpc32/power4/fpu powerpc/powerpc32/power4 diff --git a/sysdeps/powerpc/powerpc32/power5/fpu/Implies b/sysdeps/powerpc/powerpc32/power5/fpu/Implies deleted file mode 100644 index 7c16e45c29..0000000000 --- a/sysdeps/powerpc/powerpc32/power5/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc32/power4/fpu diff --git a/sysdeps/powerpc/powerpc32/power6/Implies b/sysdeps/powerpc/powerpc32/power6/Implies index c9a2d47f8a..8e5b58a57a 100644 --- a/sysdeps/powerpc/powerpc32/power6/Implies +++ b/sysdeps/powerpc/powerpc32/power6/Implies @@ -1,2 +1,2 @@ +powerpc/powerpc32/power5+/fpu powerpc/powerpc32/power5+ -powerpc/powerpc32/power4 diff --git a/sysdeps/powerpc/powerpc32/power6x/Implies b/sysdeps/powerpc/powerpc32/power6x/Implies index 1ac063bbc1..c0e1bea435 100644 --- a/sysdeps/powerpc/powerpc32/power6x/Implies +++ b/sysdeps/powerpc/powerpc32/power6x/Implies @@ -1,3 +1,2 @@ +powerpc/powerpc32/power6/fpu powerpc/powerpc32/power6 -powerpc/powerpc32/power5+ -powerpc/powerpc32/power4 diff --git a/sysdeps/powerpc/powerpc32/power6x/fpu/Implies b/sysdeps/powerpc/powerpc32/power6x/fpu/Implies deleted file mode 100644 index 081f750093..0000000000 --- a/sysdeps/powerpc/powerpc32/power6x/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -powerpc/powerpc32/power6/fpu -powerpc/powerpc32/power5+/fpu -powerpc/powerpc32/power4/fpu diff --git a/sysdeps/powerpc/powerpc32/power7/Implies b/sysdeps/powerpc/powerpc32/power7/Implies index 03899d8a3c..c0e1bea435 100644 --- a/sysdeps/powerpc/powerpc32/power7/Implies +++ b/sysdeps/powerpc/powerpc32/power7/Implies @@ -1 +1,2 @@ -powerpc/powerpc32/power5 +powerpc/powerpc32/power6/fpu +powerpc/powerpc32/power6 diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_finite.S b/sysdeps/powerpc/powerpc32/power7/fpu/s_finite.S new file mode 100644 index 0000000000..5b0d950c74 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/s_finite.S @@ -0,0 +1,89 @@ +/* finite(). PowerPC32/POWER7 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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 <math_ldbl_opt.h> + +/* int __finite(x) */ + .section .rodata.cst8,"aM",@progbits,8 + .align 3 +.LC0: /* 1.0 */ + .quad 0x3ff0000000000000 + + .section ".text" + .type __finite, @function + .machine power7 +ENTRY (__finite) +#ifdef SHARED + mflr r11 + cfi_register(lr,r11) + + bcl 20,31,1f +1: mflr r9 + addis r9,r9,.LC0-1b@ha + lfd fp0,.LC0-1b@l(r9) + + mtlr r11 + cfi_same_value (lr) +#else + lis r9,.LC0@ha + lfd fp0,.LC0@l(r9) +#endif + ftdiv cr7,fp1,fp0 + li r3,1 + bflr 30 + + /* We have -INF/+INF/NaN or a denormal. */ + + stwu r1,-16(r1) /* Allocate stack space. */ + stfd fp1,8(r1) /* Transfer FP to GPR's. */ + + ori 2,2,0 /* Force a new dispatch group. */ + lhz r0,8(r1) /* Fetch the upper portion of the high word of + the FP value (where the exponent and sign bits + are). */ + clrlwi r0,r0,17 /* r0 = abs(r0). */ + addi r1,r1,16 /* Reset the stack pointer. */ + cmpwi cr7,r0,0x7ff0 /* r4 == 0x7ff0?. */ + bltlr cr7 /* LT means we have a denormal. */ + li r3,0 + blr + END (__finite) + +hidden_def (__finite) +weak_alias (__finite, finite) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__finite, __finitef) +hidden_def (__finitef) +weak_alias (__finitef, finitef) + +#ifdef NO_LONG_DOUBLE +strong_alias (__finite, __finitel) +weak_alias (__finite, finitel) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __finite, __finitel, GLIBC_2_0); +compat_symbol (libc, finite, finitel, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_finitef.S b/sysdeps/powerpc/powerpc32/power7/fpu/s_finitef.S new file mode 100644 index 0000000000..54bd94176d --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/s_finitef.S @@ -0,0 +1 @@ +/* This function uses the same code as s_finite.S. */ diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_isinf.S b/sysdeps/powerpc/powerpc32/power7/fpu/s_isinf.S new file mode 100644 index 0000000000..2979534911 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/s_isinf.S @@ -0,0 +1,88 @@ +/* isinf(). PowerPC32/POWER7 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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 <math_ldbl_opt.h> + +/* int __isinf(x) */ + .section .rodata.cst8,"aM",@progbits,8 + .align 3 +.LC0: /* 1.0 */ + .quad 0x3ff0000000000000 + + .section ".text" + .type __isinf, @function + .machine power7 +ENTRY (__isinf) +#ifdef SHARED + mflr r11 + cfi_register(lr,r11) + + bcl 20,31,1f +1: mflr r9 + addis r9,r9,.LC0-1b@ha + lfd fp0,.LC0-1b@l(r9) + + mtlr r11 + cfi_same_value (lr) +#else + lis r9,.LC0@ha + lfd fp0,.LC0@l(r9) +#endif + ftdiv cr7,fp1,fp0 + li r3,0 + bflr 29 /* If not INF, return. */ + + /* Either we have -INF/+INF or a denormal. */ + + stwu r1,-16(r1) /* Allocate stack space. */ + stfd fp1,8(r1) /* Transfer FP to GPR's. */ + ori 2,2,0 /* Force a new dispatch group. */ + lhz r4,8(r1) /* Fetch the upper portion of the high word of + the FP value (where the exponent and sign bits + are). */ + addi r1,r1,16 /* Reset the stack pointer. */ + cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */ + li r3,1 + beqlr cr7 /* EQ means INF, otherwise -INF. */ + li r3,-1 + blr + END (__isinf) + +hidden_def (__isinf) +weak_alias (__isinf, isinf) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__isinf, __isinff) +hidden_def (__isinff) +weak_alias (__isinff, isinff) + +#ifdef NO_LONG_DOUBLE +strong_alias (__isinf, __isinfl) +weak_alias (__isinf, isinfl) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __isinf, __isinfl, GLIBC_2_0); +compat_symbol (libc, isinf, isinfl, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_isinff.S b/sysdeps/powerpc/powerpc32/power7/fpu/s_isinff.S new file mode 100644 index 0000000000..be759e091e --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/s_isinff.S @@ -0,0 +1 @@ +/* This function uses the same code as s_isinf.S. */ diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_isnan.S b/sysdeps/powerpc/powerpc32/power7/fpu/s_isnan.S new file mode 100644 index 0000000000..852539f24b --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/s_isnan.S @@ -0,0 +1,92 @@ +/* isnan(). PowerPC32/POWER7 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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 <math_ldbl_opt.h> + +/* int __isnan(x) */ + .section .rodata.cst8,"aM",@progbits,8 + .align 3 +.LC0: /* 1.0 */ + .quad 0x3ff0000000000000 + + .section ".text" + .type __isnan, @function + .machine power7 +ENTRY (__isnan) +#ifdef SHARED + mflr r11 + cfi_register(lr,r11) + + bcl 20,31,1f +1: mflr r9 + addis r9,r9,.LC0-1b@ha + lfd fp0,.LC0-1b@l(r9) + + mtlr r11 + cfi_same_value (lr) +#else + lis r9,.LC0@ha + lfd fp0,.LC0@l(r9) +#endif + ftdiv cr7,fp1,fp0 + li r3,0 + bflr 30 /* If not NaN or Inf, finish. */ + + /* We have -INF/+INF/NaN or a denormal. */ + + stwu r1,-16(r1) /* Allocate stack space. */ + stfd fp1,8(r1) /* Transfer FP to GPR's. */ + ori 2,2,0 /* Force a new dispatch group. */ + lwz r4,8(r1) /* Load the upper half of the FP value. */ + lwz r5,12(r1) /* Load the lower half of the FP value. */ + addi r1,r1,16 /* Reset the stack pointer. */ + lis r0,0x7ff0 /* Load the upper portion for an INF/NaN. */ + clrlwi r4,r4,1 /* r4 = abs(r4). */ + cmpw cr7,r4,r0 /* if (abs(r4) <= inf). */ + cmpwi cr6,r5,0 /* r5 == 0x00000000? */ + bltlr cr7 /* LT means we have a denormal. */ + bgt cr7,L(NaN) /* GT means we have a NaN. */ + beqlr cr6 /* EQ means we have +/-INF. */ +L(NaN): + li r3,1 /* x == NaN? */ + blr + END (__isnan) + +hidden_def (__isnan) +weak_alias (__isnan, isnan) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__isnan, __isnanf) +hidden_def (__isnanf) +weak_alias (__isnanf, isnanf) + +#ifdef NO_LONG_DOUBLE +strong_alias (__isnan, __isnanl) +weak_alias (__isnan, isnanl) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); +compat_symbol (libc, isnan, isnanl, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_isnanf.S b/sysdeps/powerpc/powerpc32/power7/fpu/s_isnanf.S new file mode 100644 index 0000000000..b48c85e0d3 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/fpu/s_isnanf.S @@ -0,0 +1 @@ +/* This function uses the same code as s_isnan.S. */ diff --git a/sysdeps/powerpc/powerpc32/power7/memcmp.S b/sysdeps/powerpc/powerpc32/power7/memcmp.S new file mode 100644 index 0000000000..d529b492fc --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/memcmp.S @@ -0,0 +1,988 @@ +/* Optimized memcmp implementation for POWER7/PowerPC32. + Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 USA. */ + +#include <sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> + +/* int [r3] memcmp (const char *s1 [r3], + const char *s2 [r4], + size_t size [r5]) */ + + .machine power7 +EALIGN (BP_SYM(memcmp),4,0) + CALL_MCOUNT + +#define rTMP r0 +#define rRTN r3 +#define rSTR1 r3 /* first string arg */ +#define rSTR2 r4 /* second string arg */ +#define rN r5 /* max string length */ +#define rWORD1 r6 /* current word in s1 */ +#define rWORD2 r7 /* current word in s2 */ +#define rWORD3 r8 /* next word in s1 */ +#define rWORD4 r9 /* next word in s2 */ +#define rWORD5 r10 /* next word in s1 */ +#define rWORD6 r11 /* next word in s2 */ +#define rBITDIF r12 /* bits that differ in s1 & s2 words */ +#define rWORD7 r30 /* next word in s1 */ +#define rWORD8 r31 /* next word in s2 */ + + xor rTMP,rSTR2,rSTR1 + cmplwi cr6,rN,0 + cmplwi cr1,rN,12 + clrlwi. rTMP,rTMP,30 + clrlwi rBITDIF,rSTR1,30 + cmplwi cr5,rBITDIF,0 + beq- cr6,L(zeroLength) + dcbt 0,rSTR1 + dcbt 0,rSTR2 + + /* If less than 8 bytes or not aligned, use the unaligned + byte loop. */ + + blt cr1,L(bytealigned) + stwu 1,-64(1) + cfi_adjust_cfa_offset(64) + stw r31,48(1) + cfi_offset(31,(48-64)) + stw r30,44(1) + cfi_offset(30,(44-64)) + bne L(unaligned) +/* At this point we know both strings have the same alignment and the + compare length is at least 8 bytes. rBITDIF contains the low order + 2 bits of rSTR1 and cr5 contains the result of the logical compare + of rBITDIF to 0. If rBITDIF == 0 then we are already word + aligned and can perform the word aligned loop. + + Otherwise we know the two strings have the same alignment (but not + yet word aligned). So we force the string addresses to the next lower + word boundary and special case this first word using shift left to + eliminate bits preceeding the first byte. Since we want to join the + normal (word aligned) compare loop, starting at the second word, + we need to adjust the length (rN) and special case the loop + versioning for the first word. This insures that the loop count is + correct and the first word (shifted) is in the expected register pair. */ + .align 4 +L(samealignment): + clrrwi rSTR1,rSTR1,2 + clrrwi rSTR2,rSTR2,2 + beq cr5,L(Waligned) + add rN,rN,rBITDIF + slwi r11,rBITDIF,3 + srwi rTMP,rN,4 /* Divide by 16 */ + andi. rBITDIF,rN,12 /* Get the word remainder */ + lwz rWORD1,0(rSTR1) + lwz rWORD2,0(rSTR2) + cmplwi cr1,rBITDIF,8 + cmplwi cr7,rN,16 + clrlwi rN,rN,30 + beq L(dPs4) + mtctr rTMP + bgt cr1,L(dPs3) + beq cr1,L(dPs2) + +/* Remainder is 4 */ + .align 3 +L(dsP1): + slw rWORD5,rWORD1,r11 + slw rWORD6,rWORD2,r11 + cmplw cr5,rWORD5,rWORD6 + blt cr7,L(dP1x) +/* Do something useful in this cycle since we have to branch anyway. */ + lwz rWORD1,4(rSTR1) + lwz rWORD2,4(rSTR2) + cmplw cr0,rWORD1,rWORD2 + b L(dP1e) +/* Remainder is 8 */ + .align 4 +L(dPs2): + slw rWORD5,rWORD1,r11 + slw rWORD6,rWORD2,r11 + cmplw cr6,rWORD5,rWORD6 + blt cr7,L(dP2x) +/* Do something useful in this cycle since we have to branch anyway. */ + lwz rWORD7,4(rSTR1) + lwz rWORD8,4(rSTR2) + cmplw cr5,rWORD7,rWORD8 + b L(dP2e) +/* Remainder is 12 */ + .align 4 +L(dPs3): + slw rWORD3,rWORD1,r11 + slw rWORD4,rWORD2,r11 + cmplw cr1,rWORD3,rWORD4 + b L(dP3e) +/* Count is a multiple of 16, remainder is 0 */ + .align 4 +L(dPs4): + mtctr rTMP + slw rWORD1,rWORD1,r11 + slw rWORD2,rWORD2,r11 + cmplw cr0,rWORD1,rWORD2 + b L(dP4e) + +/* At this point we know both strings are word aligned and the + compare length is at least 8 bytes. */ + .align 4 +L(Waligned): + andi. rBITDIF,rN,12 /* Get the word remainder */ + srwi rTMP,rN,4 /* Divide by 16 */ + cmplwi cr1,rBITDIF,8 + cmplwi cr7,rN,16 + clrlwi rN,rN,30 + beq L(dP4) + bgt cr1,L(dP3) + beq cr1,L(dP2) + +/* Remainder is 4 */ + .align 4 +L(dP1): + mtctr rTMP +/* Normally we'd use rWORD7/rWORD8 here, but since we might exit early + (8-15 byte compare), we want to use only volatile registers. This + means we can avoid restoring non-volatile registers since we did not + change any on the early exit path. The key here is the non-early + exit path only cares about the condition code (cr5), not about which + register pair was used. */ + lwz rWORD5,0(rSTR1) + lwz rWORD6,0(rSTR2) + cmplw cr5,rWORD5,rWORD6 + blt cr7,L(dP1x) + lwz rWORD1,4(rSTR1) + lwz rWORD2,4(rSTR2) + cmplw cr0,rWORD1,rWORD2 +L(dP1e): + lwz rWORD3,8(rSTR1) + lwz rWORD4,8(rSTR2) + cmplw cr1,rWORD3,rWORD4 + lwz rWORD5,12(rSTR1) + lwz rWORD6,12(rSTR2) + cmplw cr6,rWORD5,rWORD6 + bne cr5,L(dLcr5) + bne cr0,L(dLcr0) + + lwzu rWORD7,16(rSTR1) + lwzu rWORD8,16(rSTR2) + bne cr1,L(dLcr1) + cmplw cr5,rWORD7,rWORD8 + bdnz L(dLoop) + bne cr6,L(dLcr6) + lwz r30,44(1) + lwz r31,48(1) + .align 3 +L(dP1x): + slwi. r12,rN,3 + bne cr5,L(dLcr5) + subfic rN,r12,32 /* Shift count is 32 - (rN * 8). */ + lwz 1,0(1) + bne L(d00) + li rRTN,0 + blr + +/* Remainder is 8 */ + .align 4 +L(dP2): + mtctr rTMP + lwz rWORD5,0(rSTR1) + lwz rWORD6,0(rSTR2) + cmplw cr6,rWORD5,rWORD6 + blt cr7,L(dP2x) + lwz rWORD7,4(rSTR1) + lwz rWORD8,4(rSTR2) + cmplw cr5,rWORD7,rWORD8 +L(dP2e): + lwz rWORD1,8(rSTR1) + lwz rWORD2,8(rSTR2) + cmplw cr0,rWORD1,rWORD2 + lwz rWORD3,12(rSTR1) + lwz rWORD4,12(rSTR2) + cmplw cr1,rWORD3,rWORD4 + addi rSTR1,rSTR1,4 + addi rSTR2,rSTR2,4 + bne cr6,L(dLcr6) + bne cr5,L(dLcr5) + b L(dLoop2) +/* Again we are on a early exit path (16-23 byte compare), we want to + only use volatile registers and avoid restoring non-volatile + registers. */ + .align 4 +L(dP2x): + lwz rWORD3,4(rSTR1) + lwz rWORD4,4(rSTR2) + cmplw cr5,rWORD3,rWORD4 + slwi. r12,rN,3 + bne cr6,L(dLcr6) + addi rSTR1,rSTR1,4 + addi rSTR2,rSTR2,4 + bne cr5,L(dLcr5) + subfic rN,r12,32 /* Shift count is 32 - (rN * 8). */ + lwz 1,0(1) + bne L(d00) + li rRTN,0 + blr + +/* Remainder is 12 */ + .align 4 +L(dP3): + mtctr rTMP + lwz rWORD3,0(rSTR1) + lwz rWORD4,0(rSTR2) + cmplw cr1,rWORD3,rWORD4 +L(dP3e): + lwz rWORD5,4(rSTR1) + lwz rWORD6,4(rSTR2) + cmplw cr6,rWORD5,rWORD6 + blt cr7,L(dP3x) + lwz rWORD7,8(rSTR1) + lwz rWORD8,8(rSTR2) + cmplw cr5,rWORD7,rWORD8 + lwz rWORD1,12(rSTR1) + lwz rWORD2,12(rSTR2) + cmplw cr0,rWORD1,rWORD2 + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + bne cr1,L(dLcr1) + bne cr6,L(dLcr6) + b L(dLoop1) +/* Again we are on a early exit path (24-31 byte compare), we want to + only use volatile registers and avoid restoring non-volatile + registers. */ + .align 4 +L(dP3x): + lwz rWORD1,8(rSTR1) + lwz rWORD2,8(rSTR2) + cmplw cr5,rWORD1,rWORD2 + slwi. r12,rN,3 + bne cr1,L(dLcr1) + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + bne cr6,L(dLcr6) + subfic rN,r12,32 /* Shift count is 32 - (rN * 8). */ + bne cr5,L(dLcr5) + lwz 1,0(1) + bne L(d00) + li rRTN,0 + blr + +/* Count is a multiple of 16, remainder is 0 */ + .align 4 +L(dP4): + mtctr rTMP + lwz rWORD1,0(rSTR1) + lwz rWORD2,0(rSTR2) + cmplw cr0,rWORD1,rWORD2 +L(dP4e): + lwz rWORD3,4(rSTR1) + lwz rWORD4,4(rSTR2) + cmplw cr1,rWORD3,rWORD4 + lwz rWORD5,8(rSTR1) + lwz rWORD6,8(rSTR2) + cmplw cr6,rWORD5,rWORD6 + lwzu rWORD7,12(rSTR1) + lwzu rWORD8,12(rSTR2) + cmplw cr5,rWORD7,rWORD8 + bne cr0,L(dLcr0) + bne cr1,L(dLcr1) + bdz- L(d24) /* Adjust CTR as we start with +4 */ +/* This is the primary loop */ + .align 4 +L(dLoop): + lwz rWORD1,4(rSTR1) + lwz rWORD2,4(rSTR2) + cmplw cr1,rWORD3,rWORD4 + bne cr6,L(dLcr6) +L(dLoop1): + lwz rWORD3,8(rSTR1) + lwz rWORD4,8(rSTR2) + cmplw cr6,rWORD5,rWORD6 + bne cr5,L(dLcr5) +L(dLoop2): + lwz rWORD5,12(rSTR1) + lwz rWORD6,12(rSTR2) + cmplw cr5,rWORD7,rWORD8 + bne cr0,L(dLcr0) +L(dLoop3): + lwzu rWORD7,16(rSTR1) + lwzu rWORD8,16(rSTR2) + bne cr1,L(dLcr1) + cmplw cr0,rWORD1,rWORD2 + bdnz L(dLoop) + +L(dL4): + cmplw cr1,rWORD3,rWORD4 + bne cr6,L(dLcr6) + cmplw cr6,rWORD5,rWORD6 + bne cr5,L(dLcr5) + cmplw cr5,rWORD7,rWORD8 +L(d44): + bne cr0,L(dLcr0) +L(d34): + bne cr1,L(dLcr1) +L(d24): + bne cr6,L(dLcr6) +L(d14): + slwi. r12,rN,3 + bne cr5,L(dLcr5) +L(d04): + lwz r30,44(1) + lwz r31,48(1) + lwz 1,0(1) + subfic rN,r12,32 /* Shift count is 32 - (rN * 8). */ + beq L(zeroLength) +/* At this point we have a remainder of 1 to 3 bytes to compare. Since + we are aligned it is safe to load the whole word, and use + shift right to eliminate bits beyond the compare length. */ +L(d00): + lwz rWORD1,4(rSTR1) + lwz rWORD2,4(rSTR2) + srw rWORD1,rWORD1,rN + srw rWORD2,rWORD2,rN + cmplw rWORD1,rWORD2 + li rRTN,0 + beqlr + li rRTN,1 + bgtlr + li rRTN,-1 + blr + + .align 4 +L(dLcr0): + lwz r30,44(1) + lwz r31,48(1) + li rRTN,1 + lwz 1,0(1) + bgtlr cr0 + li rRTN,-1 + blr + .align 4 +L(dLcr1): + lwz r30,44(1) + lwz r31,48(1) + li rRTN,1 + lwz 1,0(1) + bgtlr cr1 + li rRTN,-1 + blr + .align 4 +L(dLcr6): + lwz r30,44(1) + lwz r31,48(1) + li rRTN,1 + lwz 1,0(1) + bgtlr cr6 + li rRTN,-1 + blr + .align 4 +L(dLcr5): + lwz r30,44(1) + lwz r31,48(1) +L(dLcr5x): + li rRTN,1 + lwz 1,0(1) + bgtlr cr5 + li rRTN,-1 + blr + + .align 4 +L(bytealigned): + cfi_adjust_cfa_offset(-64) + mtctr rN + +/* We need to prime this loop. This loop is swing modulo scheduled + to avoid pipe delays. The dependent instruction latencies (load to + compare to conditional branch) is 2 to 3 cycles. In this loop each + dispatch group ends in a branch and takes 1 cycle. Effectively + the first iteration of the loop only serves to load operands and + branches based on compares are delayed until the next loop. + + So we must precondition some registers and condition codes so that + we don't exit the loop early on the first iteration. */ + lbz rWORD1,0(rSTR1) + lbz rWORD2,0(rSTR2) + bdz L(b11) + cmplw cr0,rWORD1,rWORD2 + lbz rWORD3,1(rSTR1) + lbz rWORD4,1(rSTR2) + bdz L(b12) + cmplw cr1,rWORD3,rWORD4 + lbzu rWORD5,2(rSTR1) + lbzu rWORD6,2(rSTR2) + bdz L(b13) + .align 4 +L(bLoop): + lbzu rWORD1,1(rSTR1) + lbzu rWORD2,1(rSTR2) + bne cr0,L(bLcr0) + + cmplw cr6,rWORD5,rWORD6 + bdz L(b3i) + + lbzu rWORD3,1(rSTR1) + lbzu rWORD4,1(rSTR2) + bne cr1,L(bLcr1) + + cmplw cr0,rWORD1,rWORD2 + bdz L(b2i) + + lbzu rWORD5,1(rSTR1) + lbzu rWORD6,1(rSTR2) + bne cr6,L(bLcr6) + + cmplw cr1,rWORD3,rWORD4 + bdnz L(bLoop) + +/* We speculatively loading bytes before we have tested the previous + bytes. But we must avoid overrunning the length (in the ctr) to + prevent these speculative loads from causing a segfault. In this + case the loop will exit early (before the all pending bytes are + tested. In this case we must complete the pending operations + before returning. */ +L(b1i): + bne cr0,L(bLcr0) + bne cr1,L(bLcr1) + b L(bx56) + .align 4 +L(b2i): + bne cr6,L(bLcr6) + bne cr0,L(bLcr0) + b L(bx34) + .align 4 +L(b3i): + bne cr1,L(bLcr1) + bne cr6,L(bLcr6) + b L(bx12) + .align 4 +L(bLcr0): + li rRTN,1 + bgtlr cr0 + li rRTN,-1 + blr +L(bLcr1): + li rRTN,1 + bgtlr cr1 + li rRTN,-1 + blr +L(bLcr6): + li rRTN,1 + bgtlr cr6 + li rRTN,-1 + blr + +L(b13): + bne cr0,L(bx12) + bne cr1,L(bx34) +L(bx56): + sub rRTN,rWORD5,rWORD6 + blr + nop +L(b12): + bne cr0,L(bx12) +L(bx34): + sub rRTN,rWORD3,rWORD4 + blr + +L(b11): +L(bx12): + sub rRTN,rWORD1,rWORD2 + blr + + .align 4 +L(zeroLengthReturn): + +L(zeroLength): + li rRTN,0 + blr + + cfi_adjust_cfa_offset(64) + .align 4 +/* At this point we know the strings have different alignment and the + compare length is at least 8 bytes. rBITDIF contains the low order + 2 bits of rSTR1 and cr5 contains the result of the logical compare + of rBITDIF to 0. If rBITDIF == 0 then rStr1 is word aligned and can + perform the Wunaligned loop. + + Otherwise we know that rSTR1 is not aready word aligned yet. + So we can force the string addresses to the next lower word + boundary and special case this first word using shift left to + eliminate bits preceeding the first byte. Since we want to join the + normal (Wualigned) compare loop, starting at the second word, + we need to adjust the length (rN) and special case the loop + versioning for the first W. This insures that the loop count is + correct and the first W (shifted) is in the expected resister pair. */ +#define rSHL r29 /* Unaligned shift left count. */ +#define rSHR r28 /* Unaligned shift right count. */ +#define rB r27 /* Left rotation temp for rWORD2. */ +#define rD r26 /* Left rotation temp for rWORD4. */ +#define rF r25 /* Left rotation temp for rWORD6. */ +#define rH r24 /* Left rotation temp for rWORD8. */ +#define rA r0 /* Right rotation temp for rWORD2. */ +#define rC r12 /* Right rotation temp for rWORD4. */ +#define rE r0 /* Right rotation temp for rWORD6. */ +#define rG r12 /* Right rotation temp for rWORD8. */ +L(unaligned): + stw r29,40(r1) + cfi_offset(r29,(40-64)) + clrlwi rSHL,rSTR2,30 + stw r28,36(r1) + cfi_offset(r28,(36-64)) + beq cr5,L(Wunaligned) + stw r27,32(r1) + cfi_offset(r27,(32-64)) +/* Adjust the logical start of rSTR2 to compensate for the extra bits + in the 1st rSTR1 W. */ + sub r27,rSTR2,rBITDIF +/* But do not attempt to address the W before that W that contains + the actual start of rSTR2. */ + clrrwi rSTR2,rSTR2,2 + stw r26,28(r1) + cfi_offset(r26,(28-64)) +/* Compute the left/right shift counts for the unalign rSTR2, + compensating for the logical (W aligned) start of rSTR1. */ + clrlwi rSHL,r27,30 + clrrwi rSTR1,rSTR1,2 + stw r25,24(r1) + cfi_offset(r25,(24-64)) + slwi rSHL,rSHL,3 + cmplw cr5,r27,rSTR2 + add rN,rN,rBITDIF + slwi r11,rBITDIF,3 + stw r24,20(r1) + cfi_offset(r24,(20-64)) + subfic rSHR,rSHL,32 + srwi rTMP,rN,4 /* Divide by 16 */ + andi. rBITDIF,rN,12 /* Get the W remainder */ +/* We normally need to load 2 Ws to start the unaligned rSTR2, but in + this special case those bits may be discarded anyway. Also we + must avoid loading a W where none of the bits are part of rSTR2 as + this may cross a page boundary and cause a page fault. */ + li rWORD8,0 + blt cr5,L(dus0) + lwz rWORD8,0(rSTR2) + la rSTR2,4(rSTR2) + slw rWORD8,rWORD8,rSHL + +L(dus0): + lwz rWORD1,0(rSTR1) + lwz rWORD2,0(rSTR2) + cmplwi cr1,rBITDIF,8 + cmplwi cr7,rN,16 + srw rG,rWORD2,rSHR + clrlwi rN,rN,30 + beq L(duPs4) + mtctr rTMP + or rWORD8,rG,rWORD8 + bgt cr1,L(duPs3) + beq cr1,L(duPs2) + +/* Remainder is 4 */ + .align 4 +L(dusP1): + slw rB,rWORD2,rSHL + slw rWORD7,rWORD1,r11 + slw rWORD8,rWORD8,r11 + bge cr7,L(duP1e) +/* At this point we exit early with the first word compare + complete and remainder of 0 to 3 bytes. See L(du14) for details on + how we handle the remaining bytes. */ + cmplw cr5,rWORD7,rWORD8 + slwi. rN,rN,3 + bne cr5,L(duLcr5) + cmplw cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + lwz rWORD2,4(rSTR2) + srw rA,rWORD2,rSHR + b L(dutrim) +/* Remainder is 8 */ + .align 4 +L(duPs2): + slw rH,rWORD2,rSHL + slw rWORD5,rWORD1,r11 + slw rWORD6,rWORD8,r11 + b L(duP2e) +/* Remainder is 12 */ + .align 4 +L(duPs3): + slw rF,rWORD2,rSHL + slw rWORD3,rWORD1,r11 + slw rWORD4,rWORD8,r11 + b L(duP3e) +/* Count is a multiple of 16, remainder is 0 */ + .align 4 +L(duPs4): + mtctr rTMP + or rWORD8,rG,rWORD8 + slw rD,rWORD2,rSHL + slw rWORD1,rWORD1,r11 + slw rWORD2,rWORD8,r11 + b L(duP4e) + +/* At this point we know rSTR1 is word aligned and the + compare length is at least 8 bytes. */ + .align 4 +L(Wunaligned): + stw r27,32(r1) + cfi_offset(r27,(32-64)) + clrrwi rSTR2,rSTR2,2 + stw r26,28(r1) + cfi_offset(r26,(28-64)) + srwi rTMP,rN,4 /* Divide by 16 */ + stw r25,24(r1) + cfi_offset(r25,(24-64)) + andi. rBITDIF,rN,12 /* Get the W remainder */ + stw r24,20(r1) + cfi_offset(r24,(24-64)) + slwi rSHL,rSHL,3 + lwz rWORD6,0(rSTR2) + lwzu rWORD8,4(rSTR2) + cmplwi cr1,rBITDIF,8 + cmplwi cr7,rN,16 + clrlwi rN,rN,30 + subfic rSHR,rSHL,32 + slw rH,rWORD6,rSHL + beq L(duP4) + mtctr rTMP + bgt cr1,L(duP3) + beq cr1,L(duP2) + +/* Remainder is 4 */ + .align 4 +L(duP1): + srw rG,rWORD8,rSHR + lwz rWORD7,0(rSTR1) + slw rB,rWORD8,rSHL + or rWORD8,rG,rH + blt cr7,L(duP1x) +L(duP1e): + lwz rWORD1,4(rSTR1) + lwz rWORD2,4(rSTR2) + cmplw cr5,rWORD7,rWORD8 + srw rA,rWORD2,rSHR + slw rD,rWORD2,rSHL + or rWORD2,rA,rB + lwz rWORD3,8(rSTR1) + lwz rWORD4,8(rSTR2) + cmplw cr0,rWORD1,rWORD2 + srw rC,rWORD4,rSHR + slw rF,rWORD4,rSHL + bne cr5,L(duLcr5) + or rWORD4,rC,rD + lwz rWORD5,12(rSTR1) + lwz rWORD6,12(rSTR2) + cmplw cr1,rWORD3,rWORD4 + srw rE,rWORD6,rSHR + slw rH,rWORD6,rSHL + bne cr0,L(duLcr0) + or rWORD6,rE,rF + cmplw cr6,rWORD5,rWORD6 + b L(duLoop3) + .align 4 +/* At this point we exit early with the first word compare + complete and remainder of 0 to 3 bytes. See L(du14) for details on + how we handle the remaining bytes. */ +L(duP1x): + cmplw cr5,rWORD7,rWORD8 + slwi. rN,rN,3 + bne cr5,L(duLcr5) + cmplw cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + ld rWORD2,8(rSTR2) + srw rA,rWORD2,rSHR + b L(dutrim) +/* Remainder is 8 */ + .align 4 +L(duP2): + srw rE,rWORD8,rSHR + lwz rWORD5,0(rSTR1) + or rWORD6,rE,rH + slw rH,rWORD8,rSHL +L(duP2e): + lwz rWORD7,4(rSTR1) + lwz rWORD8,4(rSTR2) + cmplw cr6,rWORD5,rWORD6 + srw rG,rWORD8,rSHR + slw rB,rWORD8,rSHL + or rWORD8,rG,rH + blt cr7,L(duP2x) + lwz rWORD1,8(rSTR1) + lwz rWORD2,8(rSTR2) + cmplw cr5,rWORD7,rWORD8 + bne cr6,L(duLcr6) + srw rA,rWORD2,rSHR + slw rD,rWORD2,rSHL + or rWORD2,rA,rB + lwz rWORD3,12(rSTR1) + lwz rWORD4,12(rSTR2) + cmplw cr0,rWORD1,rWORD2 + bne cr5,L(duLcr5) + srw rC,rWORD4,rSHR + slw rF,rWORD4,rSHL + or rWORD4,rC,rD + addi rSTR1,rSTR1,4 + addi rSTR2,rSTR2,4 + cmplw cr1,rWORD3,rWORD4 + b L(duLoop2) + .align 4 +L(duP2x): + cmplw cr5,rWORD7,rWORD8 + addi rSTR1,rSTR1,4 + addi rSTR2,rSTR2,4 + bne cr6,L(duLcr6) + slwi. rN,rN,3 + bne cr5,L(duLcr5) + cmplw cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + lwz rWORD2,4(rSTR2) + srw rA,rWORD2,rSHR + b L(dutrim) + +/* Remainder is 12 */ + .align 4 +L(duP3): + srw rC,rWORD8,rSHR + lwz rWORD3,0(rSTR1) + slw rF,rWORD8,rSHL + or rWORD4,rC,rH +L(duP3e): + lwz rWORD5,4(rSTR1) + lwz rWORD6,4(rSTR2) + cmplw cr1,rWORD3,rWORD4 + srw rE,rWORD6,rSHR + slw rH,rWORD6,rSHL + or rWORD6,rE,rF + lwz rWORD7,8(rSTR1) + lwz rWORD8,8(rSTR2) + cmplw cr6,rWORD5,rWORD6 + bne cr1,L(duLcr1) + srw rG,rWORD8,rSHR + slw rB,rWORD8,rSHL + or rWORD8,rG,rH + blt cr7,L(duP3x) + lwz rWORD1,12(rSTR1) + lwz rWORD2,12(rSTR2) + cmplw cr5,rWORD7,rWORD8 + bne cr6,L(duLcr6) + srw rA,rWORD2,rSHR + slw rD,rWORD2,rSHL + or rWORD2,rA,rB + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + cmplw cr0,rWORD1,rWORD2 + b L(duLoop1) + .align 4 +L(duP3x): + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + bne cr1,L(duLcr1) + cmplw cr5,rWORD7,rWORD8 + bne cr6,L(duLcr6) + slwi. rN,rN,3 + bne cr5,L(duLcr5) + cmplw cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + lwz rWORD2,4(rSTR2) + srw rA,rWORD2,rSHR + b L(dutrim) + +/* Count is a multiple of 16, remainder is 0 */ + .align 4 +L(duP4): + mtctr rTMP + srw rA,rWORD8,rSHR + lwz rWORD1,0(rSTR1) + slw rD,rWORD8,rSHL + or rWORD2,rA,rH +L(duP4e): + lwz rWORD3,4(rSTR1) + lwz rWORD4,4(rSTR2) + cmplw cr0,rWORD1,rWORD2 + srw rC,rWORD4,rSHR + slw rF,rWORD4,rSHL + or rWORD4,rC,rD + lwz rWORD5,8(rSTR1) + lwz rWORD6,8(rSTR2) + cmplw cr1,rWORD3,rWORD4 + bne cr0,L(duLcr0) + srw rE,rWORD6,rSHR + slw rH,rWORD6,rSHL + or rWORD6,rE,rF + lwzu rWORD7,12(rSTR1) + lwzu rWORD8,12(rSTR2) + cmplw cr6,rWORD5,rWORD6 + bne cr1,L(duLcr1) + srw rG,rWORD8,rSHR + slw rB,rWORD8,rSHL + or rWORD8,rG,rH + cmplw cr5,rWORD7,rWORD8 + bdz L(du24) /* Adjust CTR as we start with +4 */ +/* This is the primary loop */ + .align 4 +L(duLoop): + lwz rWORD1,4(rSTR1) + lwz rWORD2,4(rSTR2) + cmplw cr1,rWORD3,rWORD4 + bne cr6,L(duLcr6) + srw rA,rWORD2,rSHR + slw rD,rWORD2,rSHL + or rWORD2,rA,rB +L(duLoop1): + lwz rWORD3,8(rSTR1) + lwz rWORD4,8(rSTR2) + cmplw cr6,rWORD5,rWORD6 + bne cr5,L(duLcr5) + srw rC,rWORD4,rSHR + slw rF,rWORD4,rSHL + or rWORD4,rC,rD +L(duLoop2): + lwz rWORD5,12(rSTR1) + lwz rWORD6,12(rSTR2) + cmplw cr5,rWORD7,rWORD8 + bne cr0,L(duLcr0) + srw rE,rWORD6,rSHR + slw rH,rWORD6,rSHL + or rWORD6,rE,rF +L(duLoop3): + lwzu rWORD7,16(rSTR1) + lwzu rWORD8,16(rSTR2) + cmplw cr0,rWORD1,rWORD2 + bne cr1,L(duLcr1) + srw rG,rWORD8,rSHR + slw rB,rWORD8,rSHL + or rWORD8,rG,rH + bdnz L(duLoop) + +L(duL4): + bne cr1,L(duLcr1) + cmplw cr1,rWORD3,rWORD4 + bne cr6,L(duLcr6) + cmplw cr6,rWORD5,rWORD6 + bne cr5,L(duLcr5) + cmplw cr5,rWORD7,rWORD8 +L(du44): + bne cr0,L(duLcr0) +L(du34): + bne cr1,L(duLcr1) +L(du24): + bne cr6,L(duLcr6) +L(du14): + slwi. rN,rN,3 + bne cr5,L(duLcr5) +/* At this point we have a remainder of 1 to 3 bytes to compare. We use + shift right to eliminate bits beyond the compare length. + + However it may not be safe to load rWORD2 which may be beyond the + string length. So we compare the bit length of the remainder to + the right shift count (rSHR). If the bit count is less than or equal + we do not need to load rWORD2 (all significant bits are already in + rB). */ + cmplw cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + lwz rWORD2,4(rSTR2) + srw rA,rWORD2,rSHR + .align 4 +L(dutrim): + lwz rWORD1,4(rSTR1) + lwz r31,48(1) + subfic rN,rN,32 /* Shift count is 32 - (rN * 8). */ + or rWORD2,rA,rB + lwz r30,44(1) + lwz r29,40(r1) + srw rWORD1,rWORD1,rN + srw rWORD2,rWORD2,rN + lwz r28,36(r1) + lwz r27,32(r1) + cmplw rWORD1,rWORD2 + li rRTN,0 + beq L(dureturn26) + li rRTN,1 + bgt L(dureturn26) + li rRTN,-1 + b L(dureturn26) + .align 4 +L(duLcr0): + lwz r31,48(1) + lwz r30,44(1) + li rRTN,1 + bgt cr0,L(dureturn29) + lwz r29,40(r1) + lwz r28,36(r1) + li rRTN,-1 + b L(dureturn27) + .align 4 +L(duLcr1): + lwz r31,48(1) + lwz r30,44(1) + li rRTN,1 + bgt cr1,L(dureturn29) + lwz r29,40(r1) + lwz r28,36(r1) + li rRTN,-1 + b L(dureturn27) + .align 4 +L(duLcr6): + lwz r31,48(1) + lwz r30,44(1) + li rRTN,1 + bgt cr6,L(dureturn29) + lwz r29,40(r1) + lwz r28,36(r1) + li rRTN,-1 + b L(dureturn27) + .align 4 +L(duLcr5): + lwz r31,48(1) + lwz r30,44(1) + li rRTN,1 + bgt cr5,L(dureturn29) + lwz r29,40(r1) + lwz r28,36(r1) + li rRTN,-1 + b L(dureturn27) + .align 3 +L(duZeroReturn): + li rRTN,0 + .align 4 +L(dureturn): + lwz r31,48(1) + lwz r30,44(1) +L(dureturn29): + lwz r29,40(r1) + lwz r28,36(r1) +L(dureturn27): + lwz r27,32(r1) +L(dureturn26): + lwz r26,28(r1) +L(dureturn25): + lwz r25,24(r1) + lwz r24,20(r1) + lwz 1,0(1) + blr +END (BP_SYM (memcmp)) +libc_hidden_builtin_def (memcmp) +weak_alias (memcmp,bcmp) diff --git a/sysdeps/powerpc/powerpc32/power7/memcpy.S b/sysdeps/powerpc/powerpc32/power7/memcpy.S new file mode 100644 index 0000000000..f0c332f1ba --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/memcpy.S @@ -0,0 +1,469 @@ +/* Optimized memcpy implementation for PowerPC32/POWER7. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 USA. */ + +#include <sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> + +/* __ptr_t [r3] memcpy (__ptr_t dst [r3], __ptr_t src [r4], size_t len [r5]); + Returns 'dst'. */ + + .machine power7 +EALIGN (BP_SYM (memcpy), 5, 0) + CALL_MCOUNT + + stwu 1,-32(1) + cfi_adjust_cfa_offset(32) + stw 30,20(1) + cfi_offset(30,(20-32)) + stw 31,24(1) + mr 30,3 + cmplwi cr1,5,31 + neg 0,3 + cfi_offset(31,-8) + ble cr1, L(copy_LT_32) /* If move < 32 bytes use short move + code. */ + + andi. 11,3,7 /* Check alignment of DST. */ + clrlwi 10,4,29 /* Check alignment of SRC. */ + cmplw cr6,10,11 /* SRC and DST alignments match? */ + mr 12,4 + mr 31,5 + bne cr6,L(copy_GE_32_unaligned) + + srwi 9,5,3 /* Number of full quadwords remaining. */ + + beq L(copy_GE_32_aligned_cont) + + clrlwi 0,0,29 + mtcrf 0x01,0 + subf 31,0,5 + + /* Get the SRC aligned to 8 bytes. */ + +1: bf 31,2f + lbz 6,0(12) + addi 12,12,1 + stb 6,0(3) + addi 3,3,1 +2: bf 30,4f + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +4: bf 29,0f + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +0: + clrlwi 10,12,29 /* Check alignment of SRC again. */ + srwi 9,31,3 /* Number of full doublewords remaining. */ + +L(copy_GE_32_aligned_cont): + + clrlwi 11,31,29 + mtcrf 0x01,9 + + srwi 8,31,5 + cmplwi cr1,9,4 + cmplwi cr6,11,0 + mr 11,12 + + /* Copy 1~3 doublewords so the main loop starts + at a multiple of 32 bytes. */ + + bf 30,1f + lfd 6,0(12) + lfd 7,8(12) + addi 11,12,16 + mtctr 8 + stfd 6,0(3) + stfd 7,8(3) + addi 10,3,16 + bf 31,4f + lfd 0,16(12) + stfd 0,16(3) + blt cr1,3f + addi 11,12,24 + addi 10,3,24 + b 4f + + .align 4 +1: /* Copy 1 doubleword and set the counter. */ + mr 10,3 + mtctr 8 + bf 31,4f + lfd 6,0(12) + addi 11,12,8 + stfd 6,0(3) + addi 10,3,8 + + .align 4 +4: /* Main aligned copy loop. Copies 32-bytes at a time. */ + lfd 6,0(11) + lfd 7,8(11) + lfd 8,16(11) + lfd 0,24(11) + addi 11,11,32 + + stfd 6,0(10) + stfd 7,8(10) + stfd 8,16(10) + stfd 0,24(10) + addi 10,10,32 + bdnz 4b +3: + + /* Check for tail bytes. */ + + clrrwi 0,31,3 + mtcrf 0x01,31 + beq cr6,0f + +.L9: + add 3,3,0 + add 12,12,0 + + /* At this point we have a tail of 0-7 bytes and we know that the + destination is doubleword-aligned. */ +4: /* Copy 4 bytes. */ + bf 29,2f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +2: /* Copy 2 bytes. */ + bf 30,1f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +1: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,0(12) + stb 6,0(3) +0: /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + lwz 31,24(1) + addi 1,1,32 + blr + + /* Handle copies of 0~31 bytes. */ + .align 4 +L(copy_LT_32): + cmplwi cr6,5,8 + mr 12,4 + mtcrf 0x01,5 + ble cr6,L(copy_LE_8) + + /* At least 9 bytes to go. */ + neg 8,4 + clrrwi 11,4,2 + andi. 0,8,3 + cmplwi cr1,5,16 + mr 10,5 + beq L(copy_LT_32_aligned) + + /* Force 4-bytes alignment for SRC. */ + mtocrf 0x01,0 + subf 10,0,5 +2: bf 30,1f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +1: bf 31,L(end_4bytes_alignment) + + lbz 6,0(12) + addi 12,12,1 + stb 6,0(3) + addi 3,3,1 + + .align 4 +L(end_4bytes_alignment): + cmplwi cr1,10,16 + mtcrf 0x01,10 + +L(copy_LT_32_aligned): + /* At least 6 bytes to go, and SRC is word-aligned. */ + blt cr1,8f + + /* Copy 16 bytes. */ + lwz 6,0(12) + lwz 7,4(12) + stw 6,0(3) + lwz 8,8(12) + stw 7,4(3) + lwz 6,12(12) + addi 12,12,16 + stw 8,8(3) + stw 6,12(3) + addi 3,3,16 +8: /* Copy 8 bytes. */ + bf 28,4f + + lwz 6,0(12) + lwz 7,4(12) + addi 12,12,8 + stw 6,0(3) + stw 7,4(3) + addi 3,3,8 +4: /* Copy 4 bytes. */ + bf 29,2f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +2: /* Copy 2-3 bytes. */ + bf 30,1f + + lhz 6,0(12) + sth 6,0(3) + bf 31,0f + lbz 7,2(12) + stb 7,2(3) + + /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + addi 1,1,32 + blr + + .align 4 +1: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,0(12) + stb 6,0(3) +0: /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + addi 1,1,32 + blr + + /* Handles copies of 0~8 bytes. */ + .align 4 +L(copy_LE_8): + bne cr6,4f + + /* Though we could've used lfd/stfd here, they are still + slow for unaligned cases. */ + + lwz 6,0(4) + lwz 7,4(4) + stw 6,0(3) + stw 7,4(3) + + /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + addi 1,1,32 + blr + + .align 4 +4: /* Copies 4~7 bytes. */ + bf 29,2b + + lwz 6,0(4) + stw 6,0(3) + bf 30,5f + lhz 7,4(4) + sth 7,4(3) + bf 31,0f + lbz 8,6(4) + stb 8,6(3) + + /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + addi 1,1,32 + blr + + .align 4 +5: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,4(4) + stb 6,4(3) + +0: /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + addi 1,1,32 + blr + + /* Handle copies of 32+ bytes where DST is aligned (to quadword) but + SRC is not. Use aligned quadword loads from SRC, shifted to realign + the data, allowing for aligned DST stores. */ + .align 4 +L(copy_GE_32_unaligned): + andi. 11,3,15 /* Check alignment of DST. */ + clrlwi 0,0,28 /* Number of bytes until the 1st + quadword of DST. */ + srwi 9,5,4 /* Number of full quadwords remaining. */ + + beq L(copy_GE_32_unaligned_cont) + + /* SRC is not quadword aligned, get it aligned. */ + + mtcrf 0x01,0 + subf 31,0,5 + + /* Vector instructions work best when proper alignment (16-bytes) + is present. Move 0~15 bytes as needed to get DST quadword-aligned. */ +1: /* Copy 1 byte. */ + bf 31,2f + + lbz 6,0(12) + addi 12,12,1 + stb 6,0(3) + addi 3,3,1 +2: /* Copy 2 bytes. */ + bf 30,4f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +4: /* Copy 4 bytes. */ + bf 29,8f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +8: /* Copy 8 bytes. */ + bf 28,0f + + lfd 6,0(12) + addi 12,12,8 + stfd 6,0(3) + addi 3,3,8 +0: + clrlwi 10,12,28 /* Check alignment of SRC. */ + srwi 9,31,4 /* Number of full quadwords remaining. */ + + /* The proper alignment is present, it is OK to copy the bytes now. */ +L(copy_GE_32_unaligned_cont): + + /* Setup two indexes to speed up the indexed vector operations. */ + clrlwi 11,31,28 + li 6,16 /* Index for 16-bytes offsets. */ + li 7,32 /* Index for 32-bytes offsets. */ + cmplwi cr1,11,0 + srwi 8,31,5 /* Setup the loop counter. */ + mr 10,3 + mr 11,12 + mtcrf 0x01,9 + cmplwi cr6,9,1 + lvsl 5,0,12 + lvx 3,0,12 + bf 31,L(setup_unaligned_loop) + + /* Copy another 16 bytes to align to 32-bytes due to the loop . */ + lvx 4,12,6 + vperm 6,3,4,5 + addi 11,12,16 + addi 10,3,16 + stvx 6,0,3 + vor 3,4,4 + +L(setup_unaligned_loop): + mtctr 8 + ble cr6,L(end_unaligned_loop) + + /* Copy 32 bytes at a time using vector instructions. */ + .align 4 +L(unaligned_loop): + + /* Note: vr6/vr10 may contain data that was already copied, + but in order to get proper alignment, we may have to copy + some portions again. This is faster than having unaligned + vector instructions though. */ + + lvx 4,11,6 /* vr4 = r11+16. */ + vperm 6,3,4,5 /* Merge the correctly-aligned portions + of vr3/vr4 into vr6. */ + lvx 3,11,7 /* vr3 = r11+32. */ + vperm 10,4,3,5 /* Merge the correctly-aligned portions + of vr3/vr4 into vr10. */ + addi 11,11,32 + stvx 6,0,10 + stvx 10,10,6 + addi 10,10,32 + + bdnz L(unaligned_loop) + + .align 4 +L(end_unaligned_loop): + + /* Check for tail bytes. */ + clrrwi 0,31,4 + mtcrf 0x01,31 + beq cr1,0f + + add 3,3,0 + add 12,12,0 + + /* We have 1~15 tail bytes to copy, and DST is quadword aligned. */ +8: /* Copy 8 bytes. */ + bf 28,4f + + lwz 6,0(12) + lwz 7,4(12) + addi 12,12,8 + stw 6,0(3) + stw 7,4(3) + addi 3,3,8 +4: /* Copy 4 bytes. */ + bf 29,2f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +2: /* Copy 2~3 bytes. */ + bf 30,1f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +1: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,0(12) + stb 6,0(3) +0: /* Return original DST pointer. */ + mr 3,30 + lwz 30,20(1) + lwz 31,24(1) + addi 1,1,32 + blr + +END (BP_SYM (memcpy)) +libc_hidden_builtin_def (memcpy) diff --git a/sysdeps/powerpc/powerpc32/power7/memset.S b/sysdeps/powerpc/powerpc32/power7/memset.S new file mode 100644 index 0000000000..8aabb49327 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/memset.S @@ -0,0 +1,434 @@ +/* Optimized memset implementation for PowerPC32/POWER7. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 USA. */ + +#include <sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> + +/* __ptr_t [r3] memset (__ptr_t s [r3], int c [r4], size_t n [r5])); + Returns 's'. */ + + .machine power7 +EALIGN (BP_SYM (memset), 5, 0) + CALL_MCOUNT + + .align 4 +L(_memset): + cmplwi cr7,5,31 + cmplwi cr6,5,8 + mr 10,3 /* Save original argument for later. */ + mr 7,1 /* Save original r1 for later. */ + cfi_offset(31,-8) + + /* Replicate byte to word. */ + rlwimi 4,4,8,16,23 + rlwimi 4,4,16,0,15 + + ble cr6,L(small) /* If length <= 8, use short copy code. */ + + neg 0,3 + ble cr7,L(medium) /* If length < 32, use medium copy code. */ + + /* Save our word twice to create a doubleword that we will later + copy to a FPR. */ + stwu 1,-32(1) + andi. 11,10,7 /* Check alignment of DST. */ + mr 12,5 + stw 4,24(1) + stw 4,28(1) + beq L(big_aligned) + + clrlwi 0,0,29 + mtocrf 0x01,0 + subf 5,0,5 + + /* Get DST aligned to 8 bytes. */ +1: bf 31,2f + + stb 4,0(10) + addi 10,10,1 +2: bf 30,4f + + sth 4,0(10) + addi 10,10,2 +4: bf 29,L(big_aligned) + + stw 4,0(10) + addi 10,10,4 + + .align 4 +L(big_aligned): + cmplwi cr5,5,255 + li 0,32 + cmplwi cr1,5,160 + dcbtst 0,10 + cmplwi cr6,4,0 + srwi 9,5,3 /* Number of full doublewords remaining. */ + crand 27,26,21 + mtocrf 0x01,9 + bt 27,L(huge) + + /* From this point on, we'll copy 32+ bytes and the value + isn't 0 (so we can't use dcbz). */ + + srwi 8,5,5 + clrlwi 11,5,29 + cmplwi cr6,11,0 + cmplwi cr1,9,4 + mtctr 8 + + /* Copy 1~3 doublewords so the main loop starts + at a multiple of 32 bytes. */ + + bf 30,1f + + stw 4,0(10) + stw 4,4(10) + stw 4,8(10) + stw 4,12(10) + addi 10,10,16 + bf 31,L(big_loop) + + stw 4,0(10) + stw 4,4(10) + addi 10,10,8 + mr 12,10 + blt cr1,L(tail_bytes) + + b L(big_loop) + + .align 4 +1: /* Copy 1 doubleword. */ + bf 31,L(big_loop) + + stw 4,0(10) + stw 4,4(10) + addi 10,10,8 + + /* First use a 32-bytes loop with stw's to try and avoid the LHS due + to the lfd we will do next. Also, ping-pong through r10 and r12 + to avoid AGEN delays. */ + .align 4 +L(big_loop): + addi 12,10,32 + stw 4,0(10) + stw 4,4(10) + stw 4,8(10) + stw 4,12(10) + stw 4,16(10) + stw 4,20(10) + stw 4,24(10) + stw 4,28(10) + bdz L(tail_bytes) + + addi 10,10,64 + stw 4,0(12) + stw 4,4(12) + stw 4,8(12) + stw 4,12(12) + stw 4,16(12) + stw 4,20(12) + stw 4,24(12) + stw 4,28(12) + bdnz L(big_loop_fast_setup) + + mr 12,10 + b L(tail_bytes) + + /* Now that we're probably past the LHS window, use the VSX to + speed up the loop. */ +L(big_loop_fast_setup): + li 11,24 + li 6,16 + lxvdsx 4,1,11 + + .align 4 +L(big_loop_fast): + addi 12,10,32 + stxvd2x 4,0,10 + stxvd2x 4,10,6 + bdz L(tail_bytes) + + addi 10,10,64 + stxvd2x 4,0,12 + stxvd2x 4,12,6 + bdnz L(big_loop_fast) + + mr 12,10 + + .align 4 +L(tail_bytes): + + /* Check for tail bytes. */ + mr 1,7 /* Restore r1. */ + beqlr cr6 + + clrlwi 0,5,29 + mtocrf 0x01,0 + + /* At this point we have a tail of 0-7 bytes and we know that the + destination is doubleword-aligned. */ +4: /* Copy 4 bytes. */ + bf 29,2f + + stw 4,0(12) + addi 12,12,4 +2: /* Copy 2 bytes. */ + bf 30,1f + + sth 4,0(12) + addi 12,12,2 +1: /* Copy 1 byte. */ + bflr 31 + + stb 4,0(12) + blr + + + /* Special case when value is 0 and we have a long length to deal + with. Use dcbz to zero out 128-bytes at a time. Before using + dcbz though, we need to get the destination 128-bytes aligned. */ + .align 4 +L(huge): + lfd 4,24(1) + andi. 11,10,127 + neg 0,10 + beq L(huge_aligned) + + clrlwi 0,0,25 + subf 5,0,5 + srwi 0,0,3 + mtocrf 0x01,0 + + /* Get DST aligned to 128 bytes. */ +8: bf 28,4f + + stfd 4,0(10) + stfd 4,8(10) + stfd 4,16(10) + stfd 4,24(10) + stfd 4,32(10) + stfd 4,40(10) + stfd 4,48(10) + stfd 4,56(10) + addi 10,10,64 + .align 4 +4: bf 29,2f + + stfd 4,0(10) + stfd 4,8(10) + stfd 4,16(10) + stfd 4,24(10) + addi 10,10,32 + .align 4 +2: bf 30,1f + + stfd 4,0(10) + stfd 4,8(10) + addi 10,10,16 + .align 4 +1: bf 31,L(huge_aligned) + + stfd 4,0(10) + addi 10,10,8 + +L(huge_aligned): + srwi 8,5,7 + clrlwi 11,5,25 + cmplwi cr6,11,0 + mtctr 8 + + /* Copies 128-bytes at a time. */ + .align 4 +L(huge_loop): + dcbz 0,10 + addi 10,10,128 + bdnz L(huge_loop) + + /* We have a tail of 0~127 bytes to handle. */ + mr 1,7 /* Restore r1. */ + beqlr cr6 + + subf 9,3,10 + subf 5,9,12 + srwi 8,5,3 + cmplwi cr6,8,0 + mtocrf 0x01,8 + + /* We have a tail o 1~127 bytes. Copy up to 15 doublewords for + speed. We'll handle the resulting tail bytes later. */ + beq cr6,L(tail) + +8: bf 28,4f + + stfd 4,0(10) + stfd 4,8(10) + stfd 4,16(10) + stfd 4,24(10) + stfd 4,32(10) + stfd 4,40(10) + stfd 4,48(10) + stfd 4,56(10) + addi 10,10,64 + .align 4 +4: bf 29,2f + + stfd 4,0(10) + stfd 4,8(10) + stfd 4,16(10) + stfd 4,24(10) + addi 10,10,32 + .align 4 +2: bf 30,1f + + stfd 4,0(10) + stfd 4,8(10) + addi 10,10,16 + .align 4 +1: bf 31,L(tail) + + stfd 4,0(10) + addi 10,10,8 + + /* Handle the rest of the tail bytes here. */ +L(tail): + mtocrf 0x01,5 + + .align 4 +4: bf 29,2f + + stw 4,0(10) + addi 10,10,4 + .align 4 +2: bf 30,1f + + sth 4,0(10) + addi 10,10,2 + .align 4 +1: bflr 31 + + stb 4,0(10) + blr + + + /* Expanded tree to copy tail bytes without increments. */ + .align 4 +L(copy_tail): + bf 29,L(FXX) + + stw 4,0(10) + bf 30,L(TFX) + + sth 4,4(10) + bflr 31 + + stb 4,6(10) + blr + + .align 4 +L(FXX): bf 30,L(FFX) + + sth 4,0(10) + bflr 31 + + stb 4,2(10) + blr + + .align 4 +L(TFX): bflr 31 + + stb 4,4(10) + blr + + .align 4 +L(FFX): bflr 31 + + stb 4,0(10) + blr + + /* Handle copies of 9~31 bytes. */ + .align 4 +L(medium): + /* At least 9 bytes to go. */ + andi. 11,10,3 + clrlwi 0,0,30 + beq L(medium_aligned) + + /* Force 4-bytes alignment for DST. */ + mtocrf 0x01,0 + subf 5,0,5 +1: /* Copy 1 byte. */ + bf 31,2f + + stb 4,0(10) + addi 10,10,1 +2: /* Copy 2 bytes. */ + bf 30,L(medium_aligned) + + sth 4,0(10) + addi 10,10,2 + + .align 4 +L(medium_aligned): + /* At least 6 bytes to go, and DST is word-aligned. */ + cmplwi cr1,5,16 + mtocrf 0x01,5 + blt cr1,8f + + /* Copy 16 bytes. */ + stw 4,0(10) + stw 4,4(10) + stw 4,8(10) + stw 4,12(10) + addi 10,10,16 +8: /* Copy 8 bytes. */ + bf 28,4f + + stw 4,0(10) + stw 4,4(10) + addi 10,10,8 +4: /* Copy 4 bytes. */ + bf 29,2f + + stw 4,0(10) + addi 10,10,4 +2: /* Copy 2-3 bytes. */ + bf 30,1f + + sth 4,0(10) + addi 10,10,2 +1: /* Copy 1 byte. */ + bflr 31 + + stb 4,0(10) + blr + + /* Handles copies of 0~8 bytes. */ + .align 4 +L(small): + mtocrf 0x01,5 + bne cr6,L(copy_tail) + + stw 4,0(10) + stw 4,4(10) + blr + +END (BP_SYM (memset)) +libc_hidden_builtin_def (memset) diff --git a/sysdeps/powerpc/powerpc32/power7/strncmp.S b/sysdeps/powerpc/powerpc32/power7/strncmp.S new file mode 100644 index 0000000000..ba72d0a029 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power7/strncmp.S @@ -0,0 +1,177 @@ +/* Optimized strcmp implementation for POWER7/PowerPC32. + Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 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] strncmp (const char *s1 [r3], + const char *s2 [r4], + size_t size [r5]) */ + +EALIGN (BP_SYM(strncmp),4,0) + +#define rTMP r0 +#define rRTN r3 +#define rSTR1 r3 /* first string arg */ +#define rSTR2 r4 /* second string arg */ +#define rN r5 /* max string length */ +/* Note: The Bounded pointer support in this code is broken. This code + was inherited from PPC32 and and that support was never completed. + Current PPC gcc does not support -fbounds-check or -fbounded-pointers. */ +#define rWORD1 r6 /* current word in s1 */ +#define rWORD2 r7 /* current word in s2 */ +#define rWORD3 r10 +#define rWORD4 r11 +#define rFEFE r8 /* constant 0xfefefeff (-0x01010101) */ +#define r7F7F r9 /* constant 0x7f7f7f7f */ +#define rNEG r10 /* ~(word in s1 | 0x7f7f7f7f) */ +#define rBITDIF r11 /* bits that differ in s1 & s2 words */ + + dcbt 0,rSTR1 + or rTMP,rSTR2,rSTR1 + lis r7F7F,0x7f7f + dcbt 0,rSTR2 + clrlwi. rTMP,rTMP,30 + cmplwi cr1,rN,0 + lis rFEFE,-0x101 + bne L(unaligned) +/* We are word alligned so set up for two loops. first a word + loop, then fall into the byte loop if any residual. */ + srwi. rTMP,rN,2 + clrlwi rN,rN,30 + addi rFEFE,rFEFE,-0x101 + addi r7F7F,r7F7F,0x7f7f + cmplwi cr1,rN,0 + beq L(unaligned) + + mtctr rTMP + lwz rWORD1,0(rSTR1) + lwz rWORD2,0(rSTR2) + 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 + bdz L(tail) + and. rTMP,rTMP,rNEG + cmpw cr1,rWORD1,rWORD2 + beq L(g0) + +/* 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... */ + +L(endstring): + 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 + blt cr1,L(equal) + srawi rRTN,rRTN,31 + ori rRTN,rRTN,1 + blr +L(equal): + li rRTN,0 + blr + +L(different): + lwzu rWORD1,-4(rSTR1) + xor. rBITDIF,rWORD1,rWORD2 + sub rRTN,rWORD1,rWORD2 + blt L(highbit) + srawi rRTN,rRTN,31 + ori rRTN,rRTN,1 + blr +L(highbit): + srwi rWORD2,rWORD2,24 + srwi rWORD1,rWORD1,24 + sub rRTN,rWORD1,rWORD2 + blr + + +/* Oh well. In this case, we just do a byte-by-byte comparison. */ + .align 4 +L(tail): + and. rTMP,rTMP,rNEG + cmpw cr1,rWORD1,rWORD2 + bne L(endstring) + addi rSTR1,rSTR1,4 + bne cr1,L(different) + addi rSTR2,rSTR2,4 + cmplwi cr1,rN,0 +L(unaligned): + mtctr rN + ble cr1,L(ux) +L(uz): + lbz rWORD1,0(rSTR1) + lbz rWORD2,0(rSTR2) + .align 4 +L(u1): + cmpwi cr1,rWORD1,0 + bdz L(u4) + cmpw rWORD1,rWORD2 + beq cr1,L(u4) + lbzu rWORD3,1(rSTR1) + lbzu rWORD4,1(rSTR2) + bne L(u4) + cmpwi cr1,rWORD3,0 + bdz L(u3) + cmpw rWORD3,rWORD4 + beq cr1,L(u3) + lbzu rWORD1,1(rSTR1) + lbzu rWORD2,1(rSTR2) + bne L(u3) + cmpwi cr1,rWORD1,0 + bdz L(u4) + cmpw rWORD1,rWORD2 + beq cr1,L(u4) + lbzu rWORD3,1(rSTR1) + lbzu rWORD4,1(rSTR2) + bne L(u4) + cmpwi cr1,rWORD3,0 + bdz L(u3) + cmpw rWORD3,rWORD4 + beq cr1,L(u3) + lbzu rWORD1,1(rSTR1) + lbzu rWORD2,1(rSTR2) + beq L(u1) + +L(u3): sub rRTN,rWORD3,rWORD4 + blr +L(u4): sub rRTN,rWORD1,rWORD2 + blr +L(ux): + li rRTN,0 + blr +END (BP_SYM (strncmp)) +libc_hidden_builtin_def (strncmp) diff --git a/sysdeps/powerpc/powerpc64/970/Implies b/sysdeps/powerpc/powerpc64/970/Implies index ac431fa96e..bedb20b65c 100644 --- a/sysdeps/powerpc/powerpc64/970/Implies +++ b/sysdeps/powerpc/powerpc64/970/Implies @@ -1 +1,2 @@ +powerpc/powerpc64/power4/fpu powerpc/powerpc64/power4 diff --git a/sysdeps/powerpc/powerpc64/power5+/Implies b/sysdeps/powerpc/powerpc64/power5+/Implies index ac431fa96e..a01a13ab12 100644 --- a/sysdeps/powerpc/powerpc64/power5+/Implies +++ b/sysdeps/powerpc/powerpc64/power5+/Implies @@ -1 +1,2 @@ -powerpc/powerpc64/power4 +powerpc/powerpc64/power5/fpu +powerpc/powerpc64/power5 diff --git a/sysdeps/powerpc/powerpc64/power5+/fpu/Implies b/sysdeps/powerpc/powerpc64/power5+/fpu/Implies deleted file mode 100644 index 558a5fb174..0000000000 --- a/sysdeps/powerpc/powerpc64/power5+/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc64/power4/fpu diff --git a/sysdeps/powerpc/powerpc64/power5/Implies b/sysdeps/powerpc/powerpc64/power5/Implies index ac431fa96e..bedb20b65c 100644 --- a/sysdeps/powerpc/powerpc64/power5/Implies +++ b/sysdeps/powerpc/powerpc64/power5/Implies @@ -1 +1,2 @@ +powerpc/powerpc64/power4/fpu powerpc/powerpc64/power4 diff --git a/sysdeps/powerpc/powerpc64/power5/fpu/Implies b/sysdeps/powerpc/powerpc64/power5/fpu/Implies deleted file mode 100644 index 558a5fb174..0000000000 --- a/sysdeps/powerpc/powerpc64/power5/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc64/power4/fpu diff --git a/sysdeps/powerpc/powerpc64/power6/Implies b/sysdeps/powerpc/powerpc64/power6/Implies index 0f35f37c77..4c782d4122 100644 --- a/sysdeps/powerpc/powerpc64/power6/Implies +++ b/sysdeps/powerpc/powerpc64/power6/Implies @@ -1 +1,2 @@ +powerpc/powerpc64/power5+/fpu powerpc/powerpc64/power5+ diff --git a/sysdeps/powerpc/powerpc64/power6x/Implies b/sysdeps/powerpc/powerpc64/power6x/Implies index d993b0cd73..9d68f39d22 100644 --- a/sysdeps/powerpc/powerpc64/power6x/Implies +++ b/sysdeps/powerpc/powerpc64/power6x/Implies @@ -1,2 +1,2 @@ +powerpc/powerpc64/power6/fpu powerpc/powerpc64/power6 -powerpc/powerpc64/power5+ diff --git a/sysdeps/powerpc/powerpc64/power6x/fpu/Implies b/sysdeps/powerpc/powerpc64/power6x/fpu/Implies deleted file mode 100644 index 84510991b2..0000000000 --- a/sysdeps/powerpc/powerpc64/power6x/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -powerpc/powerpc64/power6/fpu -powerpc/powerpc64/power5+/fpu -powerpc/powerpc64/power4/fpu diff --git a/sysdeps/powerpc/powerpc64/power7/Implies b/sysdeps/powerpc/powerpc64/power7/Implies index 13b03309fb..9d68f39d22 100644 --- a/sysdeps/powerpc/powerpc64/power7/Implies +++ b/sysdeps/powerpc/powerpc64/power7/Implies @@ -1 +1,2 @@ -powerpc/powerpc64/power5 +powerpc/powerpc64/power6/fpu +powerpc/powerpc64/power6 diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/Implies b/sysdeps/powerpc/powerpc64/power7/fpu/Implies index 13b03309fb..f00c50fb49 100644 --- a/sysdeps/powerpc/powerpc64/power7/fpu/Implies +++ b/sysdeps/powerpc/powerpc64/power7/fpu/Implies @@ -1 +1 @@ -powerpc/powerpc64/power5 +powerpc/powerpc64/power5/fpu diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/s_finite.S b/sysdeps/powerpc/powerpc64/power7/fpu/s_finite.S new file mode 100644 index 0000000000..6763d1adc8 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/fpu/s_finite.S @@ -0,0 +1,68 @@ +/* finite(). PowerPC64/POWER7 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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 <math_ldbl_opt.h> + +/* int __finite(x) */ + .section ".toc","aw" +.LC0: /* 1.0 */ + .tc FD_ONE[TC],0x3ff0000000000000 + .section ".text" + .type __finite, @function + .machine power7 +EALIGN (__finite, 4, 0) + CALL_MCOUNT 0 + lfd fp0,.LC0@toc(r2) + ftdiv cr7,fp1,fp0 + li r3,1 + bflr 30 + + /* If we are here, we either have +/-INF, + NaN or denormal. */ + + stfd fp1,-16(r1) /* Transfer FP to GPR's. */ + ori 2,2,0 /* Force a new dispatch group. */ + + lhz r4,-16(r1) /* Fetch the upper portion of the high word of + the FP value (where the exponent and sign bits + are). */ + clrlwi r4,r4,17 /* r4 = abs(r4). */ + cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */ + bltlr cr7 /* LT means finite, other non-finite. */ + li r3,0 + blr + END (__finite) + +hidden_def (__finite) +weak_alias (__finite, finite) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__finite, __finitef) +hidden_def (__finitef) +weak_alias (__finitef, finitef) + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __finite, __finitel, GLIBC_2_0); +compat_symbol (libc, finite, finitel, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/s_finitef.S b/sysdeps/powerpc/powerpc64/power7/fpu/s_finitef.S new file mode 100644 index 0000000000..54bd94176d --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/fpu/s_finitef.S @@ -0,0 +1 @@ +/* This function uses the same code as s_finite.S. */ diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/s_isinf.S b/sysdeps/powerpc/powerpc64/power7/fpu/s_isinf.S new file mode 100644 index 0000000000..f896d38026 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/fpu/s_isinf.S @@ -0,0 +1,71 @@ +/* isinf(). PowerPC64/POWER7 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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 <math_ldbl_opt.h> + +/* int __isinf(x) */ + .section ".toc","aw" +.LC0: /* 1.0 */ + .tc FD_ONE[TC],0x3ff0000000000000 + .section ".text" + .type __isinf, @function + .machine power7 +EALIGN (__isinf, 4, 0) + CALL_MCOUNT 0 + lfd fp0,.LC0@toc(r2) + ftdiv cr7,fp1,fp0 + li r3,0 + bflr 29 /* If not INF, return. */ + + /* Either we have -INF/+INF or a denormal. */ + + stfd fp1,-16(r1) /* Transfer FP to GPR's. */ + ori 2,2,0 /* Force a new dispatch group. */ + lhz r4,-16(r1) /* Fetch the upper portion of the high word of + the FP value (where the exponent and sign bits + are). */ + cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */ + li r3,1 + beqlr cr7 /* EQ means INF, otherwise -INF. */ + li r3,-1 + blr + END (__isinf) + +hidden_def (__isinf) +weak_alias (__isinf, isinf) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__isinf, __isinff) +hidden_def (__isinff) +weak_alias (__isinff, isinff) + +#ifdef NO_LONG_DOUBLE +strong_alias (__isinf, __isinfl) +weak_alias (__isinf, isinfl) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __isinf, __isinfl, GLIBC_2_0); +compat_symbol (libc, isinf, isinfl, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/s_isinff.S b/sysdeps/powerpc/powerpc64/power7/fpu/s_isinff.S new file mode 100644 index 0000000000..be759e091e --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/fpu/s_isinff.S @@ -0,0 +1 @@ +/* This function uses the same code as s_isinf.S. */ diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/s_isnan.S b/sysdeps/powerpc/powerpc64/power7/fpu/s_isnan.S new file mode 100644 index 0000000000..8877012598 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/fpu/s_isnan.S @@ -0,0 +1,69 @@ +/* isnan(). PowerPC64/POWER7 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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 <math_ldbl_opt.h> + +/* int __isnan(x) */ + .section ".toc","aw" +.LC0: /* 1.0 */ + .tc FD_ONE[TC],0x3ff0000000000000 + .section ".text" + .type __isnan, @function + .machine power7 +EALIGN (__isnan, 4, 0) + CALL_MCOUNT 0 + lfd fp0,.LC0@toc(r2) + ftdiv cr7,fp1,fp0 + li r3,0 + bflr 30 /* If not NaN, finish. */ + + stfd fp1,-16(r1) /* Transfer FP to GPR's. */ + ori 2,2,0 /* Force a new dispatch group. */ + ld r4,-16(r1) /* Load FP into GPR. */ + lis r0,0x7ff0 + sldi r0,r0,32 /* const long r0 0x7ff00000 00000000. */ + clrldi r4,r4,1 /* x = fabs(x) */ + cmpd cr7,r4,r0 /* if (fabs(x) <= inf) */ + blelr cr7 /* LE means not NaN. */ + li r3,1 /* else return 1 */ + blr + END (__isnan) + +hidden_def (__isnan) +weak_alias (__isnan, isnan) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__isnan, __isnanf) +hidden_def (__isnanf) +weak_alias (__isnanf, isnanf) + +#ifdef NO_LONG_DOUBLE +strong_alias (__isnan, __isnanl) +weak_alias (__isnan, isnanl) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); +compat_symbol (libc, isnan, isnanl, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc64/power7/fpu/s_isnanf.S b/sysdeps/powerpc/powerpc64/power7/fpu/s_isnanf.S new file mode 100644 index 0000000000..b48c85e0d3 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/fpu/s_isnanf.S @@ -0,0 +1 @@ +/* This function uses the same code as s_isnan.S. */ diff --git a/sysdeps/powerpc/powerpc64/power7/memcmp.S b/sysdeps/powerpc/powerpc64/power7/memcmp.S new file mode 100644 index 0000000000..f1afffb4e7 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/memcmp.S @@ -0,0 +1,984 @@ +/* Optimized memcmp implementation for POWER7/PowerPC64. + Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 USA. */ + +#include <sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> + +/* int [r3] memcmp (const char *s1 [r3], + const char *s2 [r4], + size_t size [r5]) */ + + .machine power7 +EALIGN (BP_SYM(memcmp),4,0) + CALL_MCOUNT 3 + +#define rTMP r0 +#define rRTN r3 +#define rSTR1 r3 /* first string arg */ +#define rSTR2 r4 /* second string arg */ +#define rN r5 /* max string length */ +/* Note: The Bounded pointer support in this code is broken. This code + was inherited from PPC32 and and that support was never completed. + Current PPC gcc does not support -fbounds-check or -fbounded-pointers. */ +#define rWORD1 r6 /* current word in s1 */ +#define rWORD2 r7 /* current word in s2 */ +#define rWORD3 r8 /* next word in s1 */ +#define rWORD4 r9 /* next word in s2 */ +#define rWORD5 r10 /* next word in s1 */ +#define rWORD6 r11 /* next word in s2 */ +#define rBITDIF r12 /* bits that differ in s1 & s2 words */ +#define rWORD7 r30 /* next word in s1 */ +#define rWORD8 r31 /* next word in s2 */ + + xor rTMP,rSTR2,rSTR1 + cmpldi cr6,rN,0 + cmpldi cr1,rN,12 + clrldi. rTMP,rTMP,61 + clrldi rBITDIF,rSTR1,61 + cmpldi cr5,rBITDIF,0 + beq- cr6,L(zeroLength) + dcbt 0,rSTR1 + dcbt 0,rSTR2 +/* If less than 8 bytes or not aligned, use the unalligned + byte loop. */ + blt cr1,L(bytealigned) + std rWORD8,-8(r1) + cfi_offset(rWORD8,-8) + std rWORD7,-16(r1) + cfi_offset(rWORD7,-16) + bne L(unaligned) +/* At this point we know both strings have the same alignment and the + compare length is at least 8 bytes. rBITDIF containes the low order + 3 bits of rSTR1 and cr5 contains the result of the logical compare + of rBITDIF to 0. If rBITDIF == 0 then we are already double word + aligned and can perform the DWaligned loop. + + Otherwise we know the two strings have the same alignment (but not + yet DW). So we can force the string addresses to the next lower DW + boundary and special case this first DW word using shift left to + ellimiate bits preceeding the first byte. Since we want to join the + normal (DWaligned) compare loop, starting at the second double word, + we need to adjust the length (rN) and special case the loop + versioning for the first DW. This insures that the loop count is + correct and the first DW (shifted) is in the expected resister pair. */ + .align 4 +L(samealignment): + clrrdi rSTR1,rSTR1,3 + clrrdi rSTR2,rSTR2,3 + beq cr5,L(DWaligned) + add rN,rN,rBITDIF + sldi r11,rBITDIF,3 + srdi rTMP,rN,5 /* Divide by 32 */ + andi. rBITDIF,rN,24 /* Get the DW remainder */ + ld rWORD1,0(rSTR1) + ld rWORD2,0(rSTR2) + cmpldi cr1,rBITDIF,16 + cmpldi cr7,rN,32 + clrldi rN,rN,61 + beq L(dPs4) + mtctr rTMP + bgt cr1,L(dPs3) + beq cr1,L(dPs2) + +/* Remainder is 8 */ + .align 3 +L(dsP1): + sld rWORD5,rWORD1,r11 + sld rWORD6,rWORD2,r11 + cmpld cr5,rWORD5,rWORD6 + blt cr7,L(dP1x) +/* Do something useful in this cycle since we have to branch anyway. */ + ld rWORD1,8(rSTR1) + ld rWORD2,8(rSTR2) + cmpld cr0,rWORD1,rWORD2 + b L(dP1e) +/* Remainder is 16 */ + .align 4 +L(dPs2): + sld rWORD5,rWORD1,r11 + sld rWORD6,rWORD2,r11 + cmpld cr6,rWORD5,rWORD6 + blt cr7,L(dP2x) +/* Do something useful in this cycle since we have to branch anyway. */ + ld rWORD7,8(rSTR1) + ld rWORD8,8(rSTR2) + cmpld cr5,rWORD7,rWORD8 + b L(dP2e) +/* Remainder is 24 */ + .align 4 +L(dPs3): + sld rWORD3,rWORD1,r11 + sld rWORD4,rWORD2,r11 + cmpld cr1,rWORD3,rWORD4 + b L(dP3e) +/* Count is a multiple of 32, remainder is 0 */ + .align 4 +L(dPs4): + mtctr rTMP + sld rWORD1,rWORD1,r11 + sld rWORD2,rWORD2,r11 + cmpld cr0,rWORD1,rWORD2 + b L(dP4e) + +/* At this point we know both strings are double word aligned and the + compare length is at least 8 bytes. */ + .align 4 +L(DWaligned): + andi. rBITDIF,rN,24 /* Get the DW remainder */ + srdi rTMP,rN,5 /* Divide by 32 */ + cmpldi cr1,rBITDIF,16 + cmpldi cr7,rN,32 + clrldi rN,rN,61 + beq L(dP4) + bgt cr1,L(dP3) + beq cr1,L(dP2) + +/* Remainder is 8 */ + .align 4 +L(dP1): + mtctr rTMP +/* Normally we'd use rWORD7/rWORD8 here, but since we might exit early + (8-15 byte compare), we want to use only volitile registers. This + means we can avoid restoring non-volitile registers since we did not + change any on the early exit path. The key here is the non-early + exit path only cares about the condition code (cr5), not about which + register pair was used. */ + ld rWORD5,0(rSTR1) + ld rWORD6,0(rSTR2) + cmpld cr5,rWORD5,rWORD6 + blt cr7,L(dP1x) + ld rWORD1,8(rSTR1) + ld rWORD2,8(rSTR2) + cmpld cr0,rWORD1,rWORD2 +L(dP1e): + ld rWORD3,16(rSTR1) + ld rWORD4,16(rSTR2) + cmpld cr1,rWORD3,rWORD4 + ld rWORD5,24(rSTR1) + ld rWORD6,24(rSTR2) + cmpld cr6,rWORD5,rWORD6 + bne cr5,L(dLcr5) + bne cr0,L(dLcr0) + + ldu rWORD7,32(rSTR1) + ldu rWORD8,32(rSTR2) + bne cr1,L(dLcr1) + cmpld cr5,rWORD7,rWORD8 + bdnz L(dLoop) + bne cr6,L(dLcr6) + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + .align 3 +L(dP1x): + sldi. r12,rN,3 + bne cr5,L(dLcr5) + subfic rN,r12,64 /* Shift count is 64 - (rN * 8). */ + bne L(d00) + li rRTN,0 + blr + +/* Remainder is 16 */ + .align 4 +L(dP2): + mtctr rTMP + ld rWORD5,0(rSTR1) + ld rWORD6,0(rSTR2) + cmpld cr6,rWORD5,rWORD6 + blt cr7,L(dP2x) + ld rWORD7,8(rSTR1) + ld rWORD8,8(rSTR2) + cmpld cr5,rWORD7,rWORD8 +L(dP2e): + ld rWORD1,16(rSTR1) + ld rWORD2,16(rSTR2) + cmpld cr0,rWORD1,rWORD2 + ld rWORD3,24(rSTR1) + ld rWORD4,24(rSTR2) + cmpld cr1,rWORD3,rWORD4 + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + bne cr6,L(dLcr6) + bne cr5,L(dLcr5) + b L(dLoop2) +/* Again we are on a early exit path (16-23 byte compare), we want to + only use volitile registers and avoid restoring non-volitile + registers. */ + .align 4 +L(dP2x): + ld rWORD3,8(rSTR1) + ld rWORD4,8(rSTR2) + cmpld cr5,rWORD3,rWORD4 + sldi. r12,rN,3 + bne cr6,L(dLcr6) + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + bne cr5,L(dLcr5) + subfic rN,r12,64 /* Shift count is 64 - (rN * 8). */ + bne L(d00) + li rRTN,0 + blr + +/* Remainder is 24 */ + .align 4 +L(dP3): + mtctr rTMP + ld rWORD3,0(rSTR1) + ld rWORD4,0(rSTR2) + cmpld cr1,rWORD3,rWORD4 +L(dP3e): + ld rWORD5,8(rSTR1) + ld rWORD6,8(rSTR2) + cmpld cr6,rWORD5,rWORD6 + blt cr7,L(dP3x) + ld rWORD7,16(rSTR1) + ld rWORD8,16(rSTR2) + cmpld cr5,rWORD7,rWORD8 + ld rWORD1,24(rSTR1) + ld rWORD2,24(rSTR2) + cmpld cr0,rWORD1,rWORD2 + addi rSTR1,rSTR1,16 + addi rSTR2,rSTR2,16 + bne cr1,L(dLcr1) + bne cr6,L(dLcr6) + b L(dLoop1) +/* Again we are on a early exit path (24-31 byte compare), we want to + only use volitile registers and avoid restoring non-volitile + registers. */ + .align 4 +L(dP3x): + ld rWORD1,16(rSTR1) + ld rWORD2,16(rSTR2) + cmpld cr5,rWORD1,rWORD2 + sldi. r12,rN,3 + bne cr1,L(dLcr1) + addi rSTR1,rSTR1,16 + addi rSTR2,rSTR2,16 + bne cr6,L(dLcr6) + subfic rN,r12,64 /* Shift count is 64 - (rN * 8). */ + bne cr5,L(dLcr5) + bne L(d00) + li rRTN,0 + blr + +/* Count is a multiple of 32, remainder is 0 */ + .align 4 +L(dP4): + mtctr rTMP + ld rWORD1,0(rSTR1) + ld rWORD2,0(rSTR2) + cmpld cr0,rWORD1,rWORD2 +L(dP4e): + ld rWORD3,8(rSTR1) + ld rWORD4,8(rSTR2) + cmpld cr1,rWORD3,rWORD4 + ld rWORD5,16(rSTR1) + ld rWORD6,16(rSTR2) + cmpld cr6,rWORD5,rWORD6 + ldu rWORD7,24(rSTR1) + ldu rWORD8,24(rSTR2) + cmpld cr5,rWORD7,rWORD8 + bne cr0,L(dLcr0) + bne cr1,L(dLcr1) + bdz- L(d24) /* Adjust CTR as we start with +4 */ +/* This is the primary loop */ + .align 4 +L(dLoop): + ld rWORD1,8(rSTR1) + ld rWORD2,8(rSTR2) + cmpld cr1,rWORD3,rWORD4 + bne cr6,L(dLcr6) +L(dLoop1): + ld rWORD3,16(rSTR1) + ld rWORD4,16(rSTR2) + cmpld cr6,rWORD5,rWORD6 + bne cr5,L(dLcr5) +L(dLoop2): + ld rWORD5,24(rSTR1) + ld rWORD6,24(rSTR2) + cmpld cr5,rWORD7,rWORD8 + bne cr0,L(dLcr0) +L(dLoop3): + ldu rWORD7,32(rSTR1) + ldu rWORD8,32(rSTR2) + bne cr1,L(dLcr1) + cmpld cr0,rWORD1,rWORD2 + bdnz L(dLoop) + +L(dL4): + cmpld cr1,rWORD3,rWORD4 + bne cr6,L(dLcr6) + cmpld cr6,rWORD5,rWORD6 + bne cr5,L(dLcr5) + cmpld cr5,rWORD7,rWORD8 +L(d44): + bne cr0,L(dLcr0) +L(d34): + bne cr1,L(dLcr1) +L(d24): + bne cr6,L(dLcr6) +L(d14): + sldi. r12,rN,3 + bne cr5,L(dLcr5) +L(d04): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + subfic rN,r12,64 /* Shift count is 64 - (rN * 8). */ + beq L(zeroLength) +/* At this point we have a remainder of 1 to 7 bytes to compare. Since + we are aligned it is safe to load the whole double word, and use + shift right double to elliminate bits beyond the compare length. */ +L(d00): + ld rWORD1,8(rSTR1) + ld rWORD2,8(rSTR2) + srd rWORD1,rWORD1,rN + srd rWORD2,rWORD2,rN + cmpld cr5,rWORD1,rWORD2 + bne cr5,L(dLcr5x) + li rRTN,0 + blr + .align 4 +L(dLcr0): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgtlr cr0 + li rRTN,-1 + blr + .align 4 +L(dLcr1): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgtlr cr1 + li rRTN,-1 + blr + .align 4 +L(dLcr6): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgtlr cr6 + li rRTN,-1 + blr + .align 4 +L(dLcr5): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) +L(dLcr5x): + li rRTN,1 + bgtlr cr5 + li rRTN,-1 + blr + + .align 4 +L(bytealigned): + mtctr rN + beq cr6,L(zeroLength) + +/* We need to prime this loop. This loop is swing modulo scheduled + to avoid pipe delays. The dependent instruction latencies (load to + compare to conditional branch) is 2 to 3 cycles. In this loop each + dispatch group ends in a branch and takes 1 cycle. Effectively + the first iteration of the loop only serves to load operands and + branches based on compares are delayed until the next loop. + + So we must precondition some registers and condition codes so that + we don't exit the loop early on the first iteration. */ + + lbz rWORD1,0(rSTR1) + lbz rWORD2,0(rSTR2) + bdz L(b11) + cmpld cr0,rWORD1,rWORD2 + lbz rWORD3,1(rSTR1) + lbz rWORD4,1(rSTR2) + bdz L(b12) + cmpld cr1,rWORD3,rWORD4 + lbzu rWORD5,2(rSTR1) + lbzu rWORD6,2(rSTR2) + bdz L(b13) + .align 4 +L(bLoop): + lbzu rWORD1,1(rSTR1) + lbzu rWORD2,1(rSTR2) + bne cr0,L(bLcr0) + + cmpld cr6,rWORD5,rWORD6 + bdz L(b3i) + + lbzu rWORD3,1(rSTR1) + lbzu rWORD4,1(rSTR2) + bne cr1,L(bLcr1) + + cmpld cr0,rWORD1,rWORD2 + bdz L(b2i) + + lbzu rWORD5,1(rSTR1) + lbzu rWORD6,1(rSTR2) + bne cr6,L(bLcr6) + + cmpld cr1,rWORD3,rWORD4 + bdnz L(bLoop) + +/* We speculatively loading bytes before we have tested the previous + bytes. But we must avoid overrunning the length (in the ctr) to + prevent these speculative loads from causing a segfault. In this + case the loop will exit early (before the all pending bytes are + tested. In this case we must complete the pending operations + before returning. */ +L(b1i): + bne cr0,L(bLcr0) + bne cr1,L(bLcr1) + b L(bx56) + .align 4 +L(b2i): + bne cr6,L(bLcr6) + bne cr0,L(bLcr0) + b L(bx34) + .align 4 +L(b3i): + bne cr1,L(bLcr1) + bne cr6,L(bLcr6) + b L(bx12) + .align 4 +L(bLcr0): + li rRTN,1 + bgtlr cr0 + li rRTN,-1 + blr +L(bLcr1): + li rRTN,1 + bgtlr cr1 + li rRTN,-1 + blr +L(bLcr6): + li rRTN,1 + bgtlr cr6 + li rRTN,-1 + blr + +L(b13): + bne cr0,L(bx12) + bne cr1,L(bx34) +L(bx56): + sub rRTN,rWORD5,rWORD6 + blr + nop +L(b12): + bne cr0,L(bx12) +L(bx34): + sub rRTN,rWORD3,rWORD4 + blr +L(b11): +L(bx12): + sub rRTN,rWORD1,rWORD2 + blr + .align 4 +L(zeroLengthReturn): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) +L(zeroLength): + li rRTN,0 + blr + + .align 4 +/* At this point we know the strings have different alignment and the + compare length is at least 8 bytes. rBITDIF containes the low order + 3 bits of rSTR1 and cr5 contains the result of the logical compare + of rBITDIF to 0. If rBITDIF == 0 then rStr1 is double word + aligned and can perform the DWunaligned loop. + + Otherwise we know that rSTR1 is not aready DW aligned yet. + So we can force the string addresses to the next lower DW + boundary and special case this first DW word using shift left to + ellimiate bits preceeding the first byte. Since we want to join the + normal (DWaligned) compare loop, starting at the second double word, + we need to adjust the length (rN) and special case the loop + versioning for the first DW. This insures that the loop count is + correct and the first DW (shifted) is in the expected resister pair. */ +#define rSHL r29 /* Unaligned shift left count. */ +#define rSHR r28 /* Unaligned shift right count. */ +#define rB r27 /* Left rotation temp for rWORD2. */ +#define rD r26 /* Left rotation temp for rWORD4. */ +#define rF r25 /* Left rotation temp for rWORD6. */ +#define rH r24 /* Left rotation temp for rWORD8. */ +#define rA r0 /* Right rotation temp for rWORD2. */ +#define rC r12 /* Right rotation temp for rWORD4. */ +#define rE r0 /* Right rotation temp for rWORD6. */ +#define rG r12 /* Right rotation temp for rWORD8. */ +L(unaligned): + std r29,-24(r1) + cfi_offset(r29,-24) + clrldi rSHL,rSTR2,61 + beq cr6,L(duzeroLength) + std r28,-32(r1) + cfi_offset(r28,-32) + beq cr5,L(DWunaligned) + std r27,-40(r1) + cfi_offset(r27,-40) +/* Adjust the logical start of rSTR2 ro compensate for the extra bits + in the 1st rSTR1 DW. */ + sub r27,rSTR2,rBITDIF +/* But do not attempt to address the DW before that DW that contains + the actual start of rSTR2. */ + clrrdi rSTR2,rSTR2,3 + std r26,-48(r1) + cfi_offset(r26,-48) +/* Compute the leaft/right shift counts for the unalign rSTR2, + compensating for the logical (DW aligned) start of rSTR1. */ + clrldi rSHL,r27,61 + clrrdi rSTR1,rSTR1,3 + std r25,-56(r1) + cfi_offset(r25,-56) + sldi rSHL,rSHL,3 + cmpld cr5,r27,rSTR2 + add rN,rN,rBITDIF + sldi r11,rBITDIF,3 + std r24,-64(r1) + cfi_offset(r24,-64) + subfic rSHR,rSHL,64 + srdi rTMP,rN,5 /* Divide by 32 */ + andi. rBITDIF,rN,24 /* Get the DW remainder */ +/* We normally need to load 2 DWs to start the unaligned rSTR2, but in + this special case those bits may be discarded anyway. Also we + must avoid loading a DW where none of the bits are part of rSTR2 as + this may cross a page boundary and cause a page fault. */ + li rWORD8,0 + blt cr5,L(dus0) + ld rWORD8,0(rSTR2) + la rSTR2,8(rSTR2) + sld rWORD8,rWORD8,rSHL + +L(dus0): + ld rWORD1,0(rSTR1) + ld rWORD2,0(rSTR2) + cmpldi cr1,rBITDIF,16 + cmpldi cr7,rN,32 + srd rG,rWORD2,rSHR + clrldi rN,rN,61 + beq L(duPs4) + mtctr rTMP + or rWORD8,rG,rWORD8 + bgt cr1,L(duPs3) + beq cr1,L(duPs2) + +/* Remainder is 8 */ + .align 4 +L(dusP1): + sld rB,rWORD2,rSHL + sld rWORD7,rWORD1,r11 + sld rWORD8,rWORD8,r11 + bge cr7,L(duP1e) +/* At this point we exit early with the first double word compare + complete and remainder of 0 to 7 bytes. See L(du14) for details on + how we handle the remaining bytes. */ + cmpld cr5,rWORD7,rWORD8 + sldi. rN,rN,3 + bne cr5,L(duLcr5) + cmpld cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + ld rWORD2,8(rSTR2) + srd rA,rWORD2,rSHR + b L(dutrim) +/* Remainder is 16 */ + .align 4 +L(duPs2): + sld rH,rWORD2,rSHL + sld rWORD5,rWORD1,r11 + sld rWORD6,rWORD8,r11 + b L(duP2e) +/* Remainder is 24 */ + .align 4 +L(duPs3): + sld rF,rWORD2,rSHL + sld rWORD3,rWORD1,r11 + sld rWORD4,rWORD8,r11 + b L(duP3e) +/* Count is a multiple of 32, remainder is 0 */ + .align 4 +L(duPs4): + mtctr rTMP + or rWORD8,rG,rWORD8 + sld rD,rWORD2,rSHL + sld rWORD1,rWORD1,r11 + sld rWORD2,rWORD8,r11 + b L(duP4e) + +/* At this point we know rSTR1 is double word aligned and the + compare length is at least 8 bytes. */ + .align 4 +L(DWunaligned): + std r27,-40(r1) + cfi_offset(r27,-40) + clrrdi rSTR2,rSTR2,3 + std r26,-48(r1) + cfi_offset(r26,-48) + srdi rTMP,rN,5 /* Divide by 32 */ + std r25,-56(r1) + cfi_offset(r25,-56) + andi. rBITDIF,rN,24 /* Get the DW remainder */ + std r24,-64(r1) + cfi_offset(r24,-64) + sldi rSHL,rSHL,3 + ld rWORD6,0(rSTR2) + ldu rWORD8,8(rSTR2) + cmpldi cr1,rBITDIF,16 + cmpldi cr7,rN,32 + clrldi rN,rN,61 + subfic rSHR,rSHL,64 + sld rH,rWORD6,rSHL + beq L(duP4) + mtctr rTMP + bgt cr1,L(duP3) + beq cr1,L(duP2) + +/* Remainder is 8 */ + .align 4 +L(duP1): + srd rG,rWORD8,rSHR + ld rWORD7,0(rSTR1) + sld rB,rWORD8,rSHL + or rWORD8,rG,rH + blt cr7,L(duP1x) +L(duP1e): + ld rWORD1,8(rSTR1) + ld rWORD2,8(rSTR2) + cmpld cr5,rWORD7,rWORD8 + srd rA,rWORD2,rSHR + sld rD,rWORD2,rSHL + or rWORD2,rA,rB + ld rWORD3,16(rSTR1) + ld rWORD4,16(rSTR2) + cmpld cr0,rWORD1,rWORD2 + srd rC,rWORD4,rSHR + sld rF,rWORD4,rSHL + bne cr5,L(duLcr5) + or rWORD4,rC,rD + ld rWORD5,24(rSTR1) + ld rWORD6,24(rSTR2) + cmpld cr1,rWORD3,rWORD4 + srd rE,rWORD6,rSHR + sld rH,rWORD6,rSHL + bne cr0,L(duLcr0) + or rWORD6,rE,rF + cmpld cr6,rWORD5,rWORD6 + b L(duLoop3) + .align 4 +/* At this point we exit early with the first double word compare + complete and remainder of 0 to 7 bytes. See L(du14) for details on + how we handle the remaining bytes. */ +L(duP1x): + cmpld cr5,rWORD7,rWORD8 + sldi. rN,rN,3 + bne cr5,L(duLcr5) + cmpld cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + ld rWORD2,8(rSTR2) + srd rA,rWORD2,rSHR + b L(dutrim) +/* Remainder is 16 */ + .align 4 +L(duP2): + srd rE,rWORD8,rSHR + ld rWORD5,0(rSTR1) + or rWORD6,rE,rH + sld rH,rWORD8,rSHL +L(duP2e): + ld rWORD7,8(rSTR1) + ld rWORD8,8(rSTR2) + cmpld cr6,rWORD5,rWORD6 + srd rG,rWORD8,rSHR + sld rB,rWORD8,rSHL + or rWORD8,rG,rH + blt cr7,L(duP2x) + ld rWORD1,16(rSTR1) + ld rWORD2,16(rSTR2) + cmpld cr5,rWORD7,rWORD8 + bne cr6,L(duLcr6) + srd rA,rWORD2,rSHR + sld rD,rWORD2,rSHL + or rWORD2,rA,rB + ld rWORD3,24(rSTR1) + ld rWORD4,24(rSTR2) + cmpld cr0,rWORD1,rWORD2 + bne cr5,L(duLcr5) + srd rC,rWORD4,rSHR + sld rF,rWORD4,rSHL + or rWORD4,rC,rD + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + cmpld cr1,rWORD3,rWORD4 + b L(duLoop2) + .align 4 +L(duP2x): + cmpld cr5,rWORD7,rWORD8 + addi rSTR1,rSTR1,8 + addi rSTR2,rSTR2,8 + bne cr6,L(duLcr6) + sldi. rN,rN,3 + bne cr5,L(duLcr5) + cmpld cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + ld rWORD2,8(rSTR2) + srd rA,rWORD2,rSHR + b L(dutrim) + +/* Remainder is 24 */ + .align 4 +L(duP3): + srd rC,rWORD8,rSHR + ld rWORD3,0(rSTR1) + sld rF,rWORD8,rSHL + or rWORD4,rC,rH +L(duP3e): + ld rWORD5,8(rSTR1) + ld rWORD6,8(rSTR2) + cmpld cr1,rWORD3,rWORD4 + srd rE,rWORD6,rSHR + sld rH,rWORD6,rSHL + or rWORD6,rE,rF + ld rWORD7,16(rSTR1) + ld rWORD8,16(rSTR2) + cmpld cr6,rWORD5,rWORD6 + bne cr1,L(duLcr1) + srd rG,rWORD8,rSHR + sld rB,rWORD8,rSHL + or rWORD8,rG,rH + blt cr7,L(duP3x) + ld rWORD1,24(rSTR1) + ld rWORD2,24(rSTR2) + cmpld cr5,rWORD7,rWORD8 + bne cr6,L(duLcr6) + srd rA,rWORD2,rSHR + sld rD,rWORD2,rSHL + or rWORD2,rA,rB + addi rSTR1,rSTR1,16 + addi rSTR2,rSTR2,16 + cmpld cr0,rWORD1,rWORD2 + b L(duLoop1) + .align 4 +L(duP3x): + addi rSTR1,rSTR1,16 + addi rSTR2,rSTR2,16 + bne cr1,L(duLcr1) + cmpld cr5,rWORD7,rWORD8 + bne cr6,L(duLcr6) + sldi. rN,rN,3 + bne cr5,L(duLcr5) + cmpld cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + ld rWORD2,8(rSTR2) + srd rA,rWORD2,rSHR + b L(dutrim) + +/* Count is a multiple of 32, remainder is 0 */ + .align 4 +L(duP4): + mtctr rTMP + srd rA,rWORD8,rSHR + ld rWORD1,0(rSTR1) + sld rD,rWORD8,rSHL + or rWORD2,rA,rH +L(duP4e): + ld rWORD3,8(rSTR1) + ld rWORD4,8(rSTR2) + cmpld cr0,rWORD1,rWORD2 + srd rC,rWORD4,rSHR + sld rF,rWORD4,rSHL + or rWORD4,rC,rD + ld rWORD5,16(rSTR1) + ld rWORD6,16(rSTR2) + cmpld cr1,rWORD3,rWORD4 + bne cr0,L(duLcr0) + srd rE,rWORD6,rSHR + sld rH,rWORD6,rSHL + or rWORD6,rE,rF + ldu rWORD7,24(rSTR1) + ldu rWORD8,24(rSTR2) + cmpld cr6,rWORD5,rWORD6 + bne cr1,L(duLcr1) + srd rG,rWORD8,rSHR + sld rB,rWORD8,rSHL + or rWORD8,rG,rH + cmpld cr5,rWORD7,rWORD8 + bdz L(du24) /* Adjust CTR as we start with +4 */ +/* This is the primary loop */ + .align 4 +L(duLoop): + ld rWORD1,8(rSTR1) + ld rWORD2,8(rSTR2) + cmpld cr1,rWORD3,rWORD4 + bne cr6,L(duLcr6) + srd rA,rWORD2,rSHR + sld rD,rWORD2,rSHL + or rWORD2,rA,rB +L(duLoop1): + ld rWORD3,16(rSTR1) + ld rWORD4,16(rSTR2) + cmpld cr6,rWORD5,rWORD6 + bne cr5,L(duLcr5) + srd rC,rWORD4,rSHR + sld rF,rWORD4,rSHL + or rWORD4,rC,rD +L(duLoop2): + ld rWORD5,24(rSTR1) + ld rWORD6,24(rSTR2) + cmpld cr5,rWORD7,rWORD8 + bne cr0,L(duLcr0) + srd rE,rWORD6,rSHR + sld rH,rWORD6,rSHL + or rWORD6,rE,rF +L(duLoop3): + ldu rWORD7,32(rSTR1) + ldu rWORD8,32(rSTR2) + cmpld cr0,rWORD1,rWORD2 + bne- cr1,L(duLcr1) + srd rG,rWORD8,rSHR + sld rB,rWORD8,rSHL + or rWORD8,rG,rH + bdnz L(duLoop) + +L(duL4): + bne cr1,L(duLcr1) + cmpld cr1,rWORD3,rWORD4 + bne cr6,L(duLcr6) + cmpld cr6,rWORD5,rWORD6 + bne cr5,L(duLcr5) + cmpld cr5,rWORD7,rWORD8 +L(du44): + bne cr0,L(duLcr0) +L(du34): + bne cr1,L(duLcr1) +L(du24): + bne cr6,L(duLcr6) +L(du14): + sldi. rN,rN,3 + bne cr5,L(duLcr5) +/* At this point we have a remainder of 1 to 7 bytes to compare. We use + shift right double to elliminate bits beyond the compare length. + This allows the use of double word subtract to compute the final + result. + + However it may not be safe to load rWORD2 which may be beyond the + string length. So we compare the bit length of the remainder to + the right shift count (rSHR). If the bit count is less than or equal + we do not need to load rWORD2 (all significant bits are already in + rB). */ + cmpld cr7,rN,rSHR + beq L(duZeroReturn) + li rA,0 + ble cr7,L(dutrim) + ld rWORD2,8(rSTR2) + srd rA,rWORD2,rSHR + .align 4 +L(dutrim): + ld rWORD1,8(rSTR1) + ld rWORD8,-8(r1) + subfic rN,rN,64 /* Shift count is 64 - (rN * 8). */ + or rWORD2,rA,rB + ld rWORD7,-16(r1) + ld r29,-24(r1) + srd rWORD1,rWORD1,rN + srd rWORD2,rWORD2,rN + ld r28,-32(r1) + ld r27,-40(r1) + li rRTN,0 + cmpld cr0,rWORD1,rWORD2 + ld r26,-48(r1) + ld r25,-56(r1) + beq cr0,L(dureturn24) + li rRTN,1 + ld r24,-64(r1) + bgtlr cr0 + li rRTN,-1 + blr + .align 4 +L(duLcr0): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgt cr0,L(dureturn29) + ld r29,-24(r1) + ld r28,-32(r1) + li rRTN,-1 + b L(dureturn27) + .align 4 +L(duLcr1): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgt cr1,L(dureturn29) + ld r29,-24(r1) + ld r28,-32(r1) + li rRTN,-1 + b L(dureturn27) + .align 4 +L(duLcr6): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgt cr6,L(dureturn29) + ld r29,-24(r1) + ld r28,-32(r1) + li rRTN,-1 + b L(dureturn27) + .align 4 +L(duLcr5): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) + li rRTN,1 + bgt cr5,L(dureturn29) + ld r29,-24(r1) + ld r28,-32(r1) + li rRTN,-1 + b L(dureturn27) + .align 3 +L(duZeroReturn): + li rRTN,0 + .align 4 +L(dureturn): + ld rWORD8,-8(r1) + ld rWORD7,-16(r1) +L(dureturn29): + ld r29,-24(r1) + ld r28,-32(r1) +L(dureturn27): + ld r27,-40(r1) +L(dureturn26): + ld r26,-48(r1) +L(dureturn25): + ld r25,-56(r1) +L(dureturn24): + ld r24,-64(r1) + blr +L(duzeroLength): + li rRTN,0 + blr + +END (BP_SYM (memcmp)) +libc_hidden_builtin_def (memcmp) +weak_alias (memcmp,bcmp) diff --git a/sysdeps/powerpc/powerpc64/power7/memcpy.S b/sysdeps/powerpc/powerpc64/power7/memcpy.S new file mode 100644 index 0000000000..2e5beed15e --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/memcpy.S @@ -0,0 +1,449 @@ +/* Optimized memcpy implementation for PowerPC64/POWER7. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 USA. */ + +#include <sysdep.h> +#include <bp-sym.h> +#include <bp-asm.h> + + +/* __ptr_t [r3] memcpy (__ptr_t dst [r3], __ptr_t src [r4], size_t len [r5]); + Returns 'dst'. */ + + .machine power7 +EALIGN (BP_SYM (memcpy), 5, 0) + CALL_MCOUNT 3 + + cmpldi cr1,5,31 + neg 0,3 + std 3,-16(1) + std 31,-8(1) + cfi_offset(31,-8) + ble cr1, L(copy_LT_32) /* If move < 32 bytes use short move + code. */ + + andi. 11,3,7 /* Check alignment of DST. */ + + + clrldi 10,4,61 /* Check alignment of SRC. */ + cmpld cr6,10,11 /* SRC and DST alignments match? */ + mr 12,4 + mr 31,5 + bne cr6,L(copy_GE_32_unaligned) + + srdi 9,5,3 /* Number of full quadwords remaining. */ + + beq L(copy_GE_32_aligned_cont) + + clrldi 0,0,61 + mtcrf 0x01,0 + subf 31,0,5 + + /* Get the SRC aligned to 8 bytes. */ + +1: bf 31,2f + lbz 6,0(12) + addi 12,12,1 + stb 6,0(3) + addi 3,3,1 +2: bf 30,4f + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +4: bf 29,0f + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +0: + clrldi 10,12,61 /* Check alignment of SRC again. */ + srdi 9,31,3 /* Number of full doublewords remaining. */ + +L(copy_GE_32_aligned_cont): + + clrldi 11,31,61 + mtcrf 0x01,9 + + srdi 8,31,5 + cmpldi cr1,9,4 + cmpldi cr6,11,0 + mr 11,12 + + /* Copy 1~3 doublewords so the main loop starts + at a multiple of 32 bytes. */ + + bf 30,1f + ld 6,0(12) + ld 7,8(12) + addi 11,12,16 + mtctr 8 + std 6,0(3) + std 7,8(3) + addi 10,3,16 + bf 31,4f + ld 0,16(12) + std 0,16(3) + blt cr1,3f + addi 11,12,24 + addi 10,3,24 + b 4f + + .align 4 +1: /* Copy 1 doubleword and set the counter. */ + mr 10,3 + mtctr 8 + bf 31,4f + ld 6,0(12) + addi 11,12,8 + std 6,0(3) + addi 10,3,8 + + /* Main aligned copy loop. Copies 32-bytes at a time. */ + .align 4 +4: + ld 6,0(11) + ld 7,8(11) + ld 8,16(11) + ld 0,24(11) + addi 11,11,32 + + std 6,0(10) + std 7,8(10) + std 8,16(10) + std 0,24(10) + addi 10,10,32 + bdnz 4b +3: + + /* Check for tail bytes. */ + rldicr 0,31,0,60 + mtcrf 0x01,31 + beq cr6,0f + +.L9: + add 3,3,0 + add 12,12,0 + + /* At this point we have a tail of 0-7 bytes and we know that the + destination is doubleword-aligned. */ +4: /* Copy 4 bytes. */ + bf 29,2f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +2: /* Copy 2 bytes. */ + bf 30,1f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +1: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,0(12) + stb 6,0(3) +0: /* Return original DST pointer. */ + ld 31,-8(1) + ld 3,-16(1) + blr + + /* Handle copies of 0~31 bytes. */ + .align 4 +L(copy_LT_32): + cmpldi cr6,5,8 + mr 12,4 + mtcrf 0x01,5 + ble cr6,L(copy_LE_8) + + /* At least 9 bytes to go. */ + neg 8,4 + clrrdi 11,4,2 + andi. 0,8,3 + cmpldi cr1,5,16 + mr 10,5 + beq L(copy_LT_32_aligned) + + /* Force 4-bytes alignment for SRC. */ + mtocrf 0x01,0 + subf 10,0,5 +2: bf 30,1f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +1: bf 31,L(end_4bytes_alignment) + + lbz 6,0(12) + addi 12,12,1 + stb 6,0(3) + addi 3,3,1 + + .align 4 +L(end_4bytes_alignment): + cmpldi cr1,10,16 + mtcrf 0x01,10 + +L(copy_LT_32_aligned): + /* At least 6 bytes to go, and SRC is word-aligned. */ + blt cr1,8f + + /* Copy 16 bytes. */ + lwz 6,0(12) + lwz 7,4(12) + stw 6,0(3) + lwz 8,8(12) + stw 7,4(3) + lwz 6,12(12) + addi 12,12,16 + stw 8,8(3) + stw 6,12(3) + addi 3,3,16 +8: /* Copy 8 bytes. */ + bf 28,4f + + lwz 6,0(12) + lwz 7,4(12) + addi 12,12,8 + stw 6,0(3) + stw 7,4(3) + addi 3,3,8 +4: /* Copy 4 bytes. */ + bf 29,2f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +2: /* Copy 2-3 bytes. */ + bf 30,1f + + lhz 6,0(12) + sth 6,0(3) + bf 31,0f + lbz 7,2(12) + stb 7,2(3) + ld 3,-16(1) + blr + + .align 4 +1: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,0(12) + stb 6,0(3) +0: /* Return original DST pointer. */ + ld 3,-16(1) + blr + + /* Handles copies of 0~8 bytes. */ + .align 4 +L(copy_LE_8): + bne cr6,4f + + /* Though we could've used ld/std here, they are still + slow for unaligned cases. */ + + lwz 6,0(4) + lwz 7,4(4) + stw 6,0(3) + stw 7,4(3) + ld 3,-16(1) /* Return original DST pointers. */ + blr + + .align 4 +4: /* Copies 4~7 bytes. */ + bf 29,2b + + lwz 6,0(4) + stw 6,0(3) + bf 30,5f + lhz 7,4(4) + sth 7,4(3) + bf 31,0f + lbz 8,6(4) + stb 8,6(3) + ld 3,-16(1) + blr + + .align 4 +5: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,4(4) + stb 6,4(3) + +0: /* Return original DST pointer. */ + ld 3,-16(1) + blr + + /* Handle copies of 32+ bytes where DST is aligned (to quadword) but + SRC is not. Use aligned quadword loads from SRC, shifted to realign + the data, allowing for aligned DST stores. */ + .align 4 +L(copy_GE_32_unaligned): + clrldi 0,0,60 /* Number of bytes until the 1st + quadword. */ + andi. 11,3,15 /* Check alignment of DST (against + quadwords). */ + srdi 9,5,4 /* Number of full quadwords remaining. */ + + beq L(copy_GE_32_unaligned_cont) + + /* SRC is not quadword aligned, get it aligned. */ + + mtcrf 0x01,0 + subf 31,0,5 + + /* Vector instructions work best when proper alignment (16-bytes) + is present. Move 0~15 bytes as needed to get DST quadword-aligned. */ +1: /* Copy 1 byte. */ + bf 31,2f + + lbz 6,0(12) + addi 12,12,1 + stb 6,0(3) + addi 3,3,1 +2: /* Copy 2 bytes. */ + bf 30,4f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +4: /* Copy 4 bytes. */ + bf 29,8f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +8: /* Copy 8 bytes. */ + bf 28,0f + + ld 6,0(12) + addi 12,12,8 + std 6,0(3) + addi 3,3,8 +0: + clrldi 10,12,60 /* Check alignment of SRC. */ + srdi 9,31,4 /* Number of full quadwords remaining. */ + + /* The proper alignment is present, it is OK to copy the bytes now. */ +L(copy_GE_32_unaligned_cont): + + /* Setup two indexes to speed up the indexed vector operations. */ + clrldi 11,31,60 + li 6,16 /* Index for 16-bytes offsets. */ + li 7,32 /* Index for 32-bytes offsets. */ + cmpldi cr1,11,0 + srdi 8,31,5 /* Setup the loop counter. */ + mr 10,3 + mr 11,12 + mtcrf 0x01,9 + cmpldi cr6,9,1 + lvsl 5,0,12 + lvx 3,0,12 + bf 31,L(setup_unaligned_loop) + + /* Copy another 16 bytes to align to 32-bytes due to the loop . */ + lvx 4,12,6 + vperm 6,3,4,5 + addi 11,12,16 + addi 10,3,16 + stvx 6,0,3 + vor 3,4,4 + +L(setup_unaligned_loop): + mtctr 8 + ble cr6,L(end_unaligned_loop) + + /* Copy 32 bytes at a time using vector instructions. */ + .align 4 +L(unaligned_loop): + + /* Note: vr6/vr10 may contain data that was already copied, + but in order to get proper alignment, we may have to copy + some portions again. This is faster than having unaligned + vector instructions though. */ + + lvx 4,11,6 /* vr4 = r11+16. */ + vperm 6,3,4,5 /* Merge the correctly-aligned portions + of vr3/vr4 into vr6. */ + lvx 3,11,7 /* vr3 = r11+32. */ + vperm 10,4,3,5 /* Merge the correctly-aligned portions + of vr3/vr4 into vr10. */ + addi 11,11,32 + stvx 6,0,10 + stvx 10,10,6 + addi 10,10,32 + + bdnz L(unaligned_loop) + + .align 4 +L(end_unaligned_loop): + + /* Check for tail bytes. */ + rldicr 0,31,0,59 + mtcrf 0x01,31 + beq cr1,0f + + add 3,3,0 + add 12,12,0 + + /* We have 1~15 tail bytes to copy, and DST is quadword aligned. */ +8: /* Copy 8 bytes. */ + bf 28,4f + + lwz 6,0(12) + lwz 7,4(12) + addi 12,12,8 + stw 6,0(3) + stw 7,4(3) + addi 3,3,8 +4: /* Copy 4 bytes. */ + bf 29,2f + + lwz 6,0(12) + addi 12,12,4 + stw 6,0(3) + addi 3,3,4 +2: /* Copy 2~3 bytes. */ + bf 30,1f + + lhz 6,0(12) + addi 12,12,2 + sth 6,0(3) + addi 3,3,2 +1: /* Copy 1 byte. */ + bf 31,0f + + lbz 6,0(12) + stb 6,0(3) +0: /* Return original DST pointer. */ + ld 31,-8(1) + ld 3,-16(1) + blr + +END_GEN_TB (BP_SYM (memcpy),TB_TOCLESS) +libc_hidden_builtin_def (memcpy) diff --git a/sysdeps/powerpc/powerpc64/power7/memset.S b/sysdeps/powerpc/powerpc64/power7/memset.S new file mode 100644 index 0000000000..02a9eedd6b --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/memset.S @@ -0,0 +1,398 @@ +/* Optimized memset implementation for PowerPC64/POWER7. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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> + +/* __ptr_t [r3] memset (__ptr_t s [r3], int c [r4], size_t n [r5])); + Returns 's'. */ + + .machine power7 +EALIGN (BP_SYM (memset), 5, 0) + CALL_MCOUNT 3 + +L(_memset): + cmpldi cr7,5,31 + cmpldi cr6,5,8 + mr 10,3 + + /* Replicate byte to word. */ + rlwimi 4,4,8,16,23 + rlwimi 4,4,16,0,15 + ble cr6,L(small) /* If length <= 8, use short copy code. */ + + neg 0,3 + ble cr7,L(medium) /* If length < 32, use medium copy code. */ + + andi. 11,10,7 /* Check alignment of SRC. */ + insrdi 4,4,32,0 /* Replicate word to double word. */ + + mr 12,5 + beq L(big_aligned) + + clrldi 0,0,61 + mtocrf 0x01,0 + subf 5,0,5 + + /* Get DST aligned to 8 bytes. */ +1: bf 31,2f + + stb 4,0(10) + addi 10,10,1 +2: bf 30,4f + + sth 4,0(10) + addi 10,10,2 +4: bf 29,L(big_aligned) + + stw 4,0(10) + addi 10,10,4 + + .align 4 +L(big_aligned): + + cmpldi cr5,5,255 + li 0,32 + dcbtst 0,10 + cmpldi cr6,4,0 + srdi 9,5,3 /* Number of full doublewords remaining. */ + crand 27,26,21 + mtocrf 0x01,9 + bt 27,L(huge) + + /* From this point on, we'll copy 32+ bytes and the value + isn't 0 (so we can't use dcbz). */ + + srdi 8,5,5 + clrldi 11,5,61 + cmpldi cr6,11,0 + cmpldi cr1,9,4 + mtctr 8 + + /* Copy 1~3 doublewords so the main loop starts + at a multiple of 32 bytes. */ + + bf 30,1f + + std 4,0(10) + std 4,8(10) + addi 10,10,16 + bf 31,L(big_loop) + + std 4,0(10) + addi 10,10,8 + mr 12,10 + blt cr1,L(tail_bytes) + b L(big_loop) + + .align 4 +1: /* Copy 1 doubleword. */ + bf 31,L(big_loop) + + std 4,0(10) + addi 10,10,8 + + /* Main aligned copy loop. Copies 32-bytes at a time and + ping-pong through r10 and r12 to avoid AGEN delays. */ + .align 4 +L(big_loop): + addi 12,10,32 + std 4,0(10) + std 4,8(10) + std 4,16(10) + std 4,24(10) + bdz L(tail_bytes) + + addi 10,10,64 + std 4,0(12) + std 4,8(12) + std 4,16(12) + std 4,24(12) + bdnz L(big_loop) + + mr 12,10 + b L(tail_bytes) + + .align 4 +L(tail_bytes): + + /* Check for tail bytes. */ + beqlr cr6 + + clrldi 0,5,61 + mtocrf 0x01,0 + + /* At this point we have a tail of 0-7 bytes and we know that the + destination is doubleword-aligned. */ +4: /* Copy 4 bytes. */ + bf 29,2f + + stw 4,0(12) + addi 12,12,4 +2: /* Copy 2 bytes. */ + bf 30,1f + + sth 4,0(12) + addi 12,12,2 +1: /* Copy 1 byte. */ + bflr 31 + + stb 4,0(12) + blr + + /* Special case when value is 0 and we have a long length to deal + with. Use dcbz to zero out 128-bytes at a time. Before using + dcbz though, we need to get the destination 128-bytes aligned. */ + .align 4 +L(huge): + andi. 11,10,127 + neg 0,10 + beq L(huge_aligned) + + clrldi 0,0,57 + subf 5,0,5 + srdi 0,0,3 + mtocrf 0x01,0 + + /* Get DST aligned to 128 bytes. */ +8: bf 28,4f + + std 4,0(10) + std 4,8(10) + std 4,16(10) + std 4,24(10) + std 4,32(10) + std 4,40(10) + std 4,48(10) + std 4,56(10) + addi 10,10,64 + .align 4 +4: bf 29,2f + + std 4,0(10) + std 4,8(10) + std 4,16(10) + std 4,24(10) + addi 10,10,32 + .align 4 +2: bf 30,1f + + std 4,0(10) + std 4,8(10) + addi 10,10,16 + .align 4 +1: bf 31,L(huge_aligned) + + std 4,0(10) + addi 10,10,8 + + +L(huge_aligned): + srdi 8,5,7 + clrldi 11,5,57 + cmpldi cr6,11,0 + mtctr 8 + + .align 4 +L(huge_loop): + dcbz 0,10 + addi 10,10,128 + bdnz L(huge_loop) + + /* Check how many bytes are still left. */ + beqlr cr6 + + subf 9,3,10 + subf 5,9,12 + srdi 8,5,3 + cmpldi cr6,8,0 + mtocrf 0x01,8 + + /* We have a tail o 1~127 bytes. Copy up to 15 doublewords for + speed. We'll handle the resulting tail bytes later. */ + beq cr6,L(tail) + +8: bf 28,4f + + std 4,0(10) + std 4,8(10) + std 4,16(10) + std 4,24(10) + std 4,32(10) + std 4,40(10) + std 4,48(10) + std 4,56(10) + addi 10,10,64 + .align 4 +4: bf 29,2f + + std 4,0(10) + std 4,8(10) + std 4,16(10) + std 4,24(10) + addi 10,10,32 + .align 4 +2: bf 30,1f + + std 4,0(10) + std 4,8(10) + addi 10,10,16 + .align 4 +1: bf 31,L(tail) + + std 4,0(10) + addi 10,10,8 + + /* Handle the rest of the tail bytes here. */ +L(tail): + mtocrf 0x01,5 + + .align 4 +4: bf 29,2f + + stw 4,0(10) + addi 10,10,4 + .align 4 +2: bf 30,1f + + sth 4,0(10) + addi 10,10,2 + .align 4 +1: bflr 31 + + stb 4,0(10) + blr + + /* Expanded tree to copy tail bytes without increments. */ + .align 4 +L(copy_tail): + bf 29,L(FXX) + + stw 4,0(10) + bf 30,L(TFX) + + sth 4,4(10) + bflr 31 + + stb 4,6(10) + blr + + .align 4 +L(FXX): bf 30,L(FFX) + + sth 4,0(10) + bflr 31 + + stb 4,2(10) + blr + + .align 4 +L(TFX): bflr 31 + + stb 4,4(10) + blr + + .align 4 +L(FFX): bflr 31 + + stb 4,0(10) + blr + + /* Handle copies of 9~31 bytes. */ + .align 4 +L(medium): + /* At least 9 bytes to go. */ + andi. 11,10,3 + clrldi 0,0,62 + beq L(medium_aligned) + + /* Force 4-bytes alignment for SRC. */ + mtocrf 0x01,0 + subf 5,0,5 +1: /* Copy 1 byte. */ + bf 31,2f + + stb 4,0(10) + addi 10,10,1 +2: /* Copy 2 bytes. */ + bf 30,L(medium_aligned) + + sth 4,0(10) + addi 10,10,2 + + .align 4 +L(medium_aligned): + /* At least 6 bytes to go, and DST is word-aligned. */ + cmpldi cr1,5,16 + mtocrf 0x01,5 + blt cr1,8f + + /* Copy 16 bytes. */ + stw 4,0(10) + stw 4,4(10) + stw 4,8(10) + stw 4,12(10) + addi 10,10,16 +8: /* Copy 8 bytes. */ + bf 28,4f + + stw 4,0(10) + stw 4,4(10) + addi 10,10,8 +4: /* Copy 4 bytes. */ + bf 29,2f + + stw 4,0(10) + addi 10,10,4 +2: /* Copy 2-3 bytes. */ + bf 30,1f + + sth 4,0(10) + addi 10,10,2 +1: /* Copy 1 byte. */ + bflr 31 + + stb 4,0(10) + blr + + /* Handles copies of 0~8 bytes. */ + .align 4 +L(small): + mtocrf 0x01,5 + bne cr6,L(copy_tail) + + stw 4,0(10) + stw 4,4(10) + blr + +END_GEN_TB (BP_SYM (memset),TB_TOCLESS) +libc_hidden_builtin_def (memset) + +/* Copied from bzero.S to prevent the linker from inserting a stub + between bzero and memset. */ +ENTRY (BP_SYM (__bzero)) + CALL_MCOUNT 3 + mr r5,r4 + li r4,0 + b L(_memset) +END_GEN_TB (BP_SYM (__bzero),TB_TOCLESS) + +weak_alias (BP_SYM (__bzero), BP_SYM (bzero)) diff --git a/sysdeps/powerpc/powerpc64/power7/strncmp.S b/sysdeps/powerpc/powerpc64/power7/strncmp.S new file mode 100644 index 0000000000..34f1e52df9 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power7/strncmp.S @@ -0,0 +1,181 @@ +/* Optimized strcmp implementation for POWER7/PowerPC64. + Copyright (C) 2010 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., 51 Franklin Street, Fifth Floor, Boston MA + 02110-1301 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] strncmp (const char *s1 [r3], + const char *s2 [r4], + size_t size [r5]) */ + +EALIGN (BP_SYM(strncmp),4,0) + CALL_MCOUNT 3 + +#define rTMP r0 +#define rRTN r3 +#define rSTR1 r3 /* first string arg */ +#define rSTR2 r4 /* second string arg */ +#define rN r5 /* max string length */ +/* Note: The Bounded pointer support in this code is broken. This code + was inherited from PPC32 and and that support was never completed. + Current PPC gcc does not support -fbounds-check or -fbounded-pointers. */ +#define rWORD1 r6 /* current word in s1 */ +#define rWORD2 r7 /* current word in s2 */ +#define rWORD3 r10 +#define rWORD4 r11 +#define rFEFE r8 /* constant 0xfefefefefefefeff (-0x0101010101010101) */ +#define r7F7F r9 /* constant 0x7f7f7f7f7f7f7f7f */ +#define rNEG r10 /* ~(word in s1 | 0x7f7f7f7f7f7f7f7f) */ +#define rBITDIF r11 /* bits that differ in s1 & s2 words */ + + dcbt 0,rSTR1 + or rTMP,rSTR2,rSTR1 + lis r7F7F,0x7f7f + dcbt 0,rSTR2 + clrldi. rTMP,rTMP,61 + cmpldi cr1,rN,0 + lis rFEFE,-0x101 + bne L(unaligned) +/* We are doubleword alligned so set up for two loops. first a double word + loop, then fall into the byte loop if any residual. */ + srdi. rTMP,rN,3 + clrldi rN,rN,61 + addi rFEFE,rFEFE,-0x101 + addi r7F7F,r7F7F,0x7f7f + cmpldi cr1,rN,0 + beq L(unaligned) + + mtctr rTMP + ld rWORD1,0(rSTR1) + ld rWORD2,0(rSTR2) + sldi rTMP,rFEFE,32 + insrdi r7F7F,r7F7F,32,0 + add rFEFE,rFEFE,rTMP + b L(g1) + +L(g0): + ldu rWORD1,8(rSTR1) + bne cr1,L(different) + ldu rWORD2,8(rSTR2) +L(g1): add rTMP,rFEFE,rWORD1 + nor rNEG,r7F7F,rWORD1 + bdz L(tail) + and. rTMP,rTMP,rNEG + cmpd cr1,rWORD1,rWORD2 + beq L(g0) + +/* 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... */ + +L(endstring): + and rTMP,r7F7F,rWORD1 + beq cr1,L(equal) + add rTMP,rTMP,r7F7F + xor. rBITDIF,rWORD1,rWORD2 + + andc rNEG,rNEG,rTMP + blt L(highbit) + cntlzd rBITDIF,rBITDIF + cntlzd rNEG,rNEG + addi rNEG,rNEG,7 + cmpd cr1,rNEG,rBITDIF + sub rRTN,rWORD1,rWORD2 + blt cr1,L(equal) + sradi rRTN,rRTN,63 + ori rRTN,rRTN,1 + blr +L(equal): + li rRTN,0 + blr + +L(different): + ldu rWORD1,-8(rSTR1) + xor. rBITDIF,rWORD1,rWORD2 + sub rRTN,rWORD1,rWORD2 + blt L(highbit) + sradi rRTN,rRTN,63 + ori rRTN,rRTN,1 + blr +L(highbit): + srdi rWORD2,rWORD2,56 + srdi rWORD1,rWORD1,56 + sub rRTN,rWORD1,rWORD2 + blr + + +/* Oh well. In this case, we just do a byte-by-byte comparison. */ + .align 4 +L(tail): + and. rTMP,rTMP,rNEG + cmpd cr1,rWORD1,rWORD2 + bne L(endstring) + addi rSTR1,rSTR1,8 + bne cr1,L(different) + addi rSTR2,rSTR2,8 + cmpldi cr1,rN,0 +L(unaligned): + mtctr rN + ble cr1,L(ux) +L(uz): + lbz rWORD1,0(rSTR1) + lbz rWORD2,0(rSTR2) + .align 4 +L(u1): + cmpdi cr1,rWORD1,0 + bdz L(u4) + cmpd rWORD1,rWORD2 + beq cr1,L(u4) + lbzu rWORD3,1(rSTR1) + lbzu rWORD4,1(rSTR2) + bne L(u4) + cmpdi cr1,rWORD3,0 + bdz L(u3) + cmpd rWORD3,rWORD4 + beq cr1,L(u3) + lbzu rWORD1,1(rSTR1) + lbzu rWORD2,1(rSTR2) + bne L(u3) + cmpdi cr1,rWORD1,0 + bdz L(u4) + cmpd rWORD1,rWORD2 + beq cr1,L(u4) + lbzu rWORD3,1(rSTR1) + lbzu rWORD4,1(rSTR2) + bne L(u4) + cmpdi cr1,rWORD3,0 + bdz L(u3) + cmpd rWORD3,rWORD4 + beq cr1,L(u3) + lbzu rWORD1,1(rSTR1) + lbzu rWORD2,1(rSTR2) + beq L(u1) + +L(u3): sub rRTN,rWORD3,rWORD4 + blr +L(u4): sub rRTN,rWORD1,rWORD2 + blr +L(ux): + li rRTN,0 + blr +END (BP_SYM (strncmp)) +libc_hidden_builtin_def (strncmp) diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/Implies new file mode 100644 index 0000000000..0c018834af --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc32/970/fpu +powerpc/powerpc32/970 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies deleted file mode 100644 index 52993ae71b..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/970/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/cell/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/cell/Implies new file mode 100644 index 0000000000..29c49a4c24 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/cell/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc32/cell/fpu +powerpc/powerpc32/cell diff --git a/sysdeps/powerpc/powerpc32/970/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/Implies index 7c16e45c29..17139bf21c 100644 --- a/sysdeps/powerpc/powerpc32/970/fpu/Implies +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/Implies @@ -1 +1,2 @@ powerpc/powerpc32/power4/fpu +powerpc/powerpc32/power4 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies deleted file mode 100644 index 3c0690e2fe..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/power4/fpu diff --git a/sysdeps/powerpc/powerpc32/power6/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/Implies index 57b92fb13e..8e5b58a57a 100644 --- a/sysdeps/powerpc/powerpc32/power6/fpu/Implies +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/Implies @@ -1,2 +1,2 @@ powerpc/powerpc32/power5+/fpu -powerpc/powerpc32/power4/fpu +powerpc/powerpc32/power5+ diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies deleted file mode 100644 index 37d43bb6fc..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/power5+/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/Implies new file mode 100644 index 0000000000..a51d2fdf95 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc32/power5/fpu +powerpc/powerpc32/power5 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies deleted file mode 100644 index d379a2dd12..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/power5/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/Implies new file mode 100644 index 0000000000..c0e1bea435 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc32/power6/fpu +powerpc/powerpc32/power6 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies deleted file mode 100644 index 9fb457db93..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/power6/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/Implies new file mode 100644 index 0000000000..bc9e74fcff --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc32/power6x/fpu +powerpc/powerpc32/power6x diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies deleted file mode 100644 index ffca13c0ef..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies +++ /dev/null @@ -1,4 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/power6x/fpu -powerpc/powerpc32/power6/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/Implies new file mode 100644 index 0000000000..083f3e950a --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc32/power7/fpu +powerpc/powerpc32/power7 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies deleted file mode 100644 index d379a2dd12..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc32/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc32/fpu/Implies. -powerpc/powerpc32/power5/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/Implies new file mode 100644 index 0000000000..76a32ce7b5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc64/970/fpu +powerpc/powerpc64/970 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/fpu/Implies deleted file mode 100644 index 558a5fb174..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/970/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc64/power4/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/cell/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/cell/Implies new file mode 100644 index 0000000000..583d4084a4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/cell/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc64/cell/fpu +powerpc/powerpc64/cell diff --git a/sysdeps/powerpc/powerpc64/970/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/Implies index 558a5fb174..bedb20b65c 100644 --- a/sysdeps/powerpc/powerpc64/970/fpu/Implies +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/Implies @@ -1 +1,2 @@ powerpc/powerpc64/power4/fpu +powerpc/powerpc64/power4 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies deleted file mode 100644 index 558a5fb174..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc64/power4/fpu diff --git a/sysdeps/powerpc/powerpc64/power6/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/Implies index 885e39c003..4c782d4122 100644 --- a/sysdeps/powerpc/powerpc64/power6/fpu/Implies +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/Implies @@ -1,2 +1,2 @@ powerpc/powerpc64/power5+/fpu -powerpc/powerpc64/power4/fpu +powerpc/powerpc64/power5+ diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies deleted file mode 100644 index cf5913dec3..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc64/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies. -powerpc/powerpc64/power5+/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/Implies new file mode 100644 index 0000000000..a01a13ab12 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc64/power5/fpu +powerpc/powerpc64/power5 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies deleted file mode 100644 index 558a5fb174..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies +++ /dev/null @@ -1 +0,0 @@ -powerpc/powerpc64/power4/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/Implies new file mode 100644 index 0000000000..9d68f39d22 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc64/power6/fpu +powerpc/powerpc64/power6 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies deleted file mode 100644 index 9451147267..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc64/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies. -powerpc/powerpc64/power6/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/Implies new file mode 100644 index 0000000000..9019778254 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc64/power6x/fpu +powerpc/powerpc64/power6x diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies deleted file mode 100644 index fd74b8341c..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies +++ /dev/null @@ -1,4 +0,0 @@ -# Make sure this comes before the powerpc/powerpc64/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies. -powerpc/powerpc64/power6x/fpu -powerpc/powerpc64/power6/fpu diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/Implies new file mode 100644 index 0000000000..9a5e3c7277 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/Implies @@ -0,0 +1,2 @@ +powerpc/powerpc64/power7/fpu +powerpc/powerpc64/power7 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies deleted file mode 100644 index c46b3d42af..0000000000 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies +++ /dev/null @@ -1,3 +0,0 @@ -# Make sure this comes before the powerpc/powerpc64/fpu that's -# listed in unix/sysv/linux/powerpc/powerpc64/fpu/Implies. -powerpc/powerpc64/power5/fpu |