/* Optimized strstr implementation for PowerPC64/POWER7.
- Copyright (C) 2015-2016 Free Software Foundation, Inc.
+ Copyright (C) 2015-2018 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
#define ITERATIONS 64
+#ifndef STRSTR
+# define STRSTR strstr
+#endif
+
#ifndef STRLEN
/* For builds with no IFUNC support, local calls should be made to internal
GLIBC symbol (created by libc_hidden_builtin_def). */
# ifdef SHARED
# define STRLEN __GI_strlen
+# define STRLEN_is_local
# else
# define STRLEN strlen
# endif
GLIBC symbol (created by libc_hidden_builtin_def). */
# ifdef SHARED
# define STRNLEN __GI_strnlen
+# define STRNLEN_is_local
# else
# define STRNLEN __strnlen
# endif
#ifndef STRCHR
# ifdef SHARED
# define STRCHR __GI_strchr
+# define STRCHR_is_local
# else
# define STRCHR strchr
# endif
#define FRAMESIZE (FRAME_MIN_SIZE+32)
.machine power7
-EALIGN (strstr, 4, 0)
+/* Can't be ENTRY_TOCLESS due to calling __strstr_ppc which uses r2. */
+ENTRY (STRSTR, 4)
CALL_MCOUNT 2
mflr r0 /* Load link register LR to r0. */
std r31, -8(r1) /* Save callers register r31. */
mr r30, r4
mr r3, r4
bl STRLEN
+#ifndef STRLEN_is_local
nop
+#endif
cmpdi cr7, r3, 0 /* If search str is null. */
beq cr7, L(ret_r3)
mr r4, r3
mr r3, r29
bl STRNLEN
+#ifndef STRNLEN_is_local
nop
+#endif
cmpd cr7, r3, r31 /* If len(r3) < len(r4). */
blt cr7, L(retnull)
mr r3, r29
lbz r4, 0(r30)
bl STRCHR
+#ifndef STRCHR_is_local
nop
+#endif
mr r11, r3
/* If first char of search str is not present. */
beq cr7, L(default)
lbz r4, 0(r30)
bl STRCHR
+#ifndef STRCHR_is_local
nop
+#endif
/* If first char of search str is not present. */
cmpdi cr7, r3, 0
ble cr7, L(end)
beq cr7, L(default)
lbz r4, 0(r30)
bl STRCHR
+#ifndef STRCHR_is_local
nop
+#endif
/* If first char of search str is not present. */
cmpdi cr7, r3, 0
ble cr7, L(end)
ld r31, -8(r1) /* Restore callers save register r31. */
mtlr r0 /* Branch to link register. */
blr
-END (strstr)
+END (STRSTR)
libc_hidden_builtin_def (strstr)