diff options
Diffstat (limited to 'newlib/libc/machine/xscale/memmove.c')
-rw-r--r-- | newlib/libc/machine/xscale/memmove.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/newlib/libc/machine/xscale/memmove.c b/newlib/libc/machine/xscale/memmove.c deleted file mode 100644 index 04d1a14d2..000000000 --- a/newlib/libc/machine/xscale/memmove.c +++ /dev/null @@ -1,122 +0,0 @@ -#if defined __thumb__ - -#include "../../string/memmove.c" - -#else - -#include <string.h> -#include "xscale.h" - -static inline void * -do_memcpy (void *dst0, const void *src0, size_t len) -{ - int dummy; - asm volatile ( -#ifndef __OPTIMIZE_SIZE__ - "cmp %2, #0x3\n\ - bls 3f\n\ - and lr, %1, #0x3\n\ - and r3, %0, #0x3\n\ - cmp lr, r3\n\ - bne 3f\n\ - cmp lr, #0x0\n\ - beq 2f\n\ - b 1f\n\ -0:\n\ - ldrb r3, [%1], #1\n\ -" - PRELOADSTR ("%1") -"\n\ - tst %1, #0x3\n\ - strb r3, [%0], #1\n\ - beq 3f\n\ -1:\n\ - sub %2, %2, #1\n\ - cmn %2, #1\n\ - bne 0b\n\ -2:\n\ - cmp %2, #0xf\n\ - bls 1f\n\ -0:\n\ - ldmia %1!, { r3, r4, r5, lr }\n\ -" - PRELOADSTR ("%1") -"\n\ -\n\ - sub %2, %2, #16\n\ - cmp %2, #0xf\n\ - stmia %0!, { r3, r4, r5, lr }\n\ - bhi 0b\n\ -1:\n\ - cmp %2, #0x7\n\ - bls 1f\n\ -0:\n\ - ldmia %1!, { r3, r4 }\n\ -" - PRELOADSTR ("%1") -"\n\ -\n\ - sub %2, %2, #8\n\ - cmp %2, #0x7\n\ - stmia %0!, { r3, r4 }\n\ - bhi 0b\n\ -1:\n\ - cmp %2, #0x3\n\ - bls 3f\n\ -0:\n\ - sub %2, %2, #4\n\ - ldr r3, [%1], #4\n\ -" - PRELOADSTR ("%1") -"\n\ -\n\ - cmp %2, #0x3\n\ - str r3, [%0], #4\n\ - bhi 0b\n\ -" -#endif /* !__OPTIMIZE_SIZE__ */ -"\n\ -3:\n\ -" - PRELOADSTR ("%1") -"\n\ - sub %2, %2, #1\n\ - cmn %2, #1\n\ - beq 1f\n\ -0:\n\ - sub %2, %2, #1\n\ - ldrb r3, [%1], #1\n\ -" - PRELOADSTR ("%1") -"\n\ - cmn %2, #1\n\ - strb r3, [%0], #1\n\ - bne 0b\n\ -1:" - : "=&r" (dummy), "=&r" (src0), "=&r" (len) - : "0" (dst0), "1" (src0), "2" (len) - : "memory", "lr", "r3", "r4", "r5", "cc"); - return dst0; -} - -void * -memmove (void *dst, const void *src, size_t len) -{ - char *d = dst; - const char *s = src; - - if (s < d && d < s + len) - { - /* Destructive overlap...have to copy backwards. */ - s += len; - d += len; - - while (len--) - *--d = *--s; - - return dst; - } - else - return do_memcpy (dst, src, len); -} -#endif |