diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/power7/memcmp.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power7/memcmp.S | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/sysdeps/powerpc/powerpc64/power7/memcmp.S b/sysdeps/powerpc/powerpc64/power7/memcmp.S index 4be29008c7..91acdfbd92 100644 --- a/sysdeps/powerpc/powerpc64/power7/memcmp.S +++ b/sysdeps/powerpc/powerpc64/power7/memcmp.S @@ -1,5 +1,5 @@ /* Optimized memcmp implementation for POWER7/PowerPC64. - Copyright (C) 2010-2016 Free Software Foundation, Inc. + Copyright (C) 2010-2018 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 @@ -21,9 +21,11 @@ /* int [r3] memcmp (const char *s1 [r3], const char *s2 [r4], size_t size [r5]) */ - +#ifndef MEMCMP +# define MEMCMP memcmp +#endif .machine power7 -EALIGN (memcmp, 4, 0) +ENTRY_TOCLESS (MEMCMP, 4) CALL_MCOUNT 3 #define rRTN r3 @@ -82,17 +84,17 @@ EALIGN (memcmp, 4, 0) byte loop. */ blt cr1, L(bytealigned) std rWORD8, rWORD8SAVE(r1) - cfi_offset(rWORD8, rWORD8SAVE) std rWORD7, rWORD7SAVE(r1) - cfi_offset(rWORD7, rWORD7SAVE) std rOFF8, rOFF8SAVE(r1) - cfi_offset(rWORD7, rOFF8SAVE) std rOFF16, rOFF16SAVE(r1) - cfi_offset(rWORD7, rOFF16SAVE) std rOFF24, rOFF24SAVE(r1) - cfi_offset(rWORD7, rOFF24SAVE) std rOFF32, rOFF32SAVE(r1) - cfi_offset(rWORD7, rOFF32SAVE) + cfi_offset(rWORD8, rWORD8SAVE) + cfi_offset(rWORD7, rWORD7SAVE) + cfi_offset(rOFF8, rOFF8SAVE) + cfi_offset(rOFF16, rOFF16SAVE) + cfi_offset(rOFF24, rOFF24SAVE) + cfi_offset(rOFF32, rOFF32SAVE) li rOFF8,8 li rOFF16,16 @@ -601,18 +603,18 @@ L(unaligned): the actual start of rSTR2. */ clrrdi rSTR2, rSTR2, 3 std rWORD2_SHIFT, rWORD2SHIFTSAVE(r1) - cfi_offset(rWORD2_SHIFT, rWORD2SHIFTSAVE) /* Compute the left/right shift counts for the unaligned rSTR2, compensating for the logical (DW aligned) start of rSTR1. */ clrldi rSHL, rWORD8_SHIFT, 61 clrrdi rSTR1, rSTR1, 3 std rWORD4_SHIFT, rWORD4SHIFTSAVE(r1) - cfi_offset(rWORD4_SHIFT, rWORD4SHIFTSAVE) sldi rSHL, rSHL, 3 cmpld cr5, rWORD8_SHIFT, rSTR2 add rN, rN, r12 sldi rWORD6, r12, 3 std rWORD6_SHIFT, rWORD6SHIFTSAVE(r1) + cfi_offset(rWORD2_SHIFT, rWORD2SHIFTSAVE) + cfi_offset(rWORD4_SHIFT, rWORD4SHIFTSAVE) cfi_offset(rWORD6_SHIFT, rWORD6SHIFTSAVE) subfic rSHR, rSHL, 64 srdi r0, rN, 5 /* Divide by 32 */ @@ -689,15 +691,15 @@ L(duPs4): .align 4 L(DWunaligned): std rWORD8_SHIFT, rWORD8SHIFTSAVE(r1) - cfi_offset(rWORD8_SHIFT, rWORD8SHIFTSAVE) clrrdi rSTR2, rSTR2, 3 std rWORD2_SHIFT, rWORD2SHIFTSAVE(r1) - cfi_offset(rWORD2_SHIFT, rWORD2SHIFTSAVE) srdi r0, rN, 5 /* Divide by 32 */ std rWORD4_SHIFT, rWORD4SHIFTSAVE(r1) - cfi_offset(rWORD4_SHIFT, rWORD4SHIFTSAVE) andi. r12, rN, 24 /* Get the DW remainder */ std rWORD6_SHIFT, rWORD6SHIFTSAVE(r1) + cfi_offset(rWORD8_SHIFT, rWORD8SHIFTSAVE) + cfi_offset(rWORD2_SHIFT, rWORD2SHIFTSAVE) + cfi_offset(rWORD4_SHIFT, rWORD4SHIFTSAVE) cfi_offset(rWORD6_SHIFT, rWORD6SHIFTSAVE) sldi rSHL, rSHL, 3 LD rWORD6, 0, rSTR2 @@ -1054,6 +1056,6 @@ L(duzeroLength): li rRTN, 0 blr -END (memcmp) +END (MEMCMP) libc_hidden_builtin_def (memcmp) weak_alias (memcmp, bcmp) |