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Diffstat (limited to 'newlib/libc/machine/xscale/strlen.c')
-rw-r--r--newlib/libc/machine/xscale/strlen.c100
1 files changed, 0 insertions, 100 deletions
diff --git a/newlib/libc/machine/xscale/strlen.c b/newlib/libc/machine/xscale/strlen.c
deleted file mode 100644
index a8bc0851d..000000000
--- a/newlib/libc/machine/xscale/strlen.c
+++ /dev/null
@@ -1,100 +0,0 @@
-#if defined __thumb__ || defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
-
-#include "../../string/strlen.c"
-
-#else
-
-#include <string.h>
-#include "xscale.h"
-
-size_t
-strlen (const char *str)
-{
- _CONST char *start = str;
-
- /* Skip unaligned part. */
- if ((long)str & 3)
- {
- str--;
- do
- {
- if (*++str == '\0')
- goto out;
- }
- while ((long)str & 3);
- }
-
- /* Load two constants:
- R4 = 0xfefefeff [ == ~(0x80808080 << 1) ]
- R5 = 0x80808080 */
-
- asm ("mov r5, #0x80\n\
- add r5, r5, #0x8000\n\
- add r5, r5, r5, lsl #16\n\
- mvn r4, r5, lsl #1\n\
-"
-
-#if defined __ARM_ARCH_5__ || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5E__ || defined __ARM_ARCH_5TE__
-
-" tst %0, #0x7\n\
- ldreqd r6, [%0]\n\
- beq 1f\n\
- ldr r2, [%0]\n\
- add r3, r2, r4\n\
- bic r3, r3, r2\n\
- ands r2, r3, r5\n\
- bne 2f\n\
- sub %0, %0, #4\n\
-\n\
-0:\n\
- ldrd r6, [%0, #8]!\n\
-"
- PRELOADSTR ("%0")
-"\n\
-1:\n\
- add r3, r6, r4\n\
- add r2, r7, r4\n\
- bic r3, r3, r6\n\
- bic r2, r2, r7\n\
- and r3, r3, r5\n\
- and r2, r2, r5\n\
- orrs r3, r2, r3\n\
- beq 0b\n\
-"
-#else
-
-" sub %0, %0, #4\n\
-\n\
-0:\n\
- ldr r6, [%0, #4]!\n\
-"
- PRELOADSTR ("%0")
-"\n\
- add r3, r6, r4\n\
- bic r3, r3, r6\n\
- ands r3, r3, r5\n\
- beq 0b\n\
-"
-#endif /* __ARM_ARCH_5[T][E]__ */
-"\n\
-2:\n\
- ldrb r3, [%0]\n\
- cmp r3, #0x0\n\
- beq 1f\n\
-\n\
-0:\n\
- ldrb r3, [%0, #1]!\n\
-"
- PRELOADSTR ("%0")
-"\n\
- cmp r3, #0x0\n\
- bne 0b\n\
-1:\n\
-"
- : "=r" (str) : "0" (str) : "r2", "r3", "r4", "r5", "r6", "r7");
-
- out:
- return str - start;
-}
-
-#endif