Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / powerpc / powerpc64 / power8 / strncpy.S

diff --git a/sysdeps/powerpc/powerpc64/power8/strncpy.S b/sysdeps/powerpc/powerpc64/power8/strncpy.S
index b7fae6d59a2c38dc3b1af3a36dee74bd4a834cf3..01e9f70250a7f87c2fd73031ad6dc4032587fb42 100644 (file)
--- a/sysdeps/powerpc/powerpc64/power8/strncpy.S
+++ b/sysdeps/powerpc/powerpc64/power8/strncpy.S
@@ -1,5 +1,5 @@
 /* Optimized strncpy/stpncpy implementation for PowerPC64/POWER8.
-   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+   Copyright (C) 2015-2019 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
@@ -19,15 +19,24 @@
 #include <sysdep.h>
 
 #ifdef USE_AS_STPNCPY
-# define FUNC_NAME __stpncpy
+# ifndef STPNCPY
+#   define FUNC_NAME __stpncpy
+# else
+#   define FUNC_NAME STPNCPY
+# endif
 #else
-# define FUNC_NAME strncpy
-#endif
+# ifndef STRNCPY
+#  define FUNC_NAME strncpy
+# else
+#  define FUNC_NAME STRNCPY
+# endif
+#endif  /* !USE_AS_STPNCPY  */
 
 #ifndef MEMSET
 /* For builds without IFUNC support, local calls should be made to internal
    GLIBC symbol (created by libc_hidden_builtin_def).  */
 # ifdef SHARED
+#  define MEMSET_is_local
 #  define MEMSET   __GI_memset
 # else
 #  define MEMSET   memset
@@ -52,7 +61,12 @@
    4k.  */
 
        .machine  power7
-EALIGN (FUNC_NAME, 4, 0)
+#ifdef MEMSET_is_local
+ENTRY_TOCLESS (FUNC_NAME, 4)
+#else
+ENTRY (FUNC_NAME, 4)
+#endif
+       CALL_MCOUNT 3
 
         /* Check if the [src]+15 will cross a 4K page by checking if the bit
            indicating the page size changes.  Basically:
@@ -227,21 +241,18 @@ L(zero_pad_start_1):
        /* Save the link register.  */
        mflr    r0
        std     r0,16(r1)
-       cfi_offset(lr, 16)
 
        /* Create the stack frame.  */
        stdu    r1,-FRAMESIZE(r1)
        cfi_adjust_cfa_offset(FRAMESIZE)
+       cfi_offset(lr, 16)
 
        bl      MEMSET
+#ifndef MEMSET_is_local
        nop
+#endif
 
-       /* Restore the stack frame.  */
-       addi    r1,r1,FRAMESIZE
-       cfi_adjust_cfa_offset(-FRAMESIZE)
-       /* Restore the link register.  */
-       ld      r0,16(r1)
-       mtlr    r0
+       ld      r0,FRAMESIZE+16(r1)
 
 #ifndef USE_AS_STPNCPY
        mr      r3,r30       /* Restore the return value of strncpy, i.e.:
@@ -250,12 +261,18 @@ L(zero_pad_start_1):
 #endif
 
        /* Restore non-volatile registers and return.  */
-       ld      r26,-48(r1)
-       ld      r27,-40(r1)
-       ld      r28,-32(r1)
-       ld      r29,-24(r1)
-       ld      r30,-16(r1)
-       ld      r31,-8(r1)
+       ld      r26,FRAMESIZE-48(r1)
+       ld      r27,FRAMESIZE-40(r1)
+       ld      r28,FRAMESIZE-32(r1)
+       ld      r29,FRAMESIZE-24(r1)
+       ld      r30,FRAMESIZE-16(r1)
+       ld      r31,FRAMESIZE-8(r1)
+       /* Restore the stack frame.  */
+       addi    r1,r1,FRAMESIZE
+       cfi_adjust_cfa_offset(-FRAMESIZE)
+       /* Restore the link register.  */
+       mtlr    r0
+       cfi_restore(lr)
        blr
 
        /* The common case where [src]+16 will not cross a 4K page boundary.