#if defined __thumb__
|
#if defined __thumb__
|
|
|
#include "../../string/strcpy.c"
|
#include "../../string/strcpy.c"
|
|
|
#else
|
#else
|
|
|
#include <string.h>
|
#include <string.h>
|
#include "xscale.h"
|
#include "xscale.h"
|
|
|
char *
|
char *
|
strcpy (char *dest, const char *src)
|
strcpy (char *dest, const char *src)
|
{
|
{
|
char *dest0 = dest;
|
char *dest0 = dest;
|
|
|
asm (PRELOADSTR ("%0") : : "r" (src));
|
asm (PRELOADSTR ("%0") : : "r" (src));
|
|
|
#ifndef __OPTIMIZE_SIZE__
|
#ifndef __OPTIMIZE_SIZE__
|
if (((long)src & 3) == ((long)dest & 3))
|
if (((long)src & 3) == ((long)dest & 3))
|
{
|
{
|
/* Skip unaligned part. */
|
/* Skip unaligned part. */
|
while ((long)src & 3)
|
while ((long)src & 3)
|
{
|
{
|
if (! (*dest++ = *src++))
|
if (! (*dest++ = *src++))
|
return dest0;
|
return dest0;
|
}
|
}
|
|
|
/* Load two constants:
|
/* Load two constants:
|
R4 = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
R4 = 0xfefefeff [ == ~(0x80808080 << 1) ]
|
R5 = 0x80808080 */
|
R5 = 0x80808080 */
|
|
|
asm ("mov r5, #0x80\n\
|
asm ("mov r5, #0x80\n\
|
ldr r1, [%1, #0]\n\
|
ldr r1, [%1, #0]\n\
|
add r5, r5, #0x8000\n\
|
add r5, r5, #0x8000\n\
|
add r5, r5, r5, lsl #16\n\
|
add r5, r5, r5, lsl #16\n\
|
mvn r4, r5, lsl #1\n\
|
mvn r4, r5, lsl #1\n\
|
\n\
|
\n\
|
add r3, r1, r5\n\
|
add r3, r1, r5\n\
|
bic r3, r3, r1\n\
|
bic r3, r3, r1\n\
|
ands r2, r3, r4\n\
|
ands r2, r3, r4\n\
|
bne 1f\n\
|
bne 1f\n\
|
0:\n\
|
0:\n\
|
ldr r3, [%1, #0]\n\
|
ldr r3, [%1, #0]\n\
|
ldr r1, [%1, #4]!\n\
|
ldr r1, [%1, #4]!\n\
|
" PRELOADSTR("%1") "\n\
|
" PRELOADSTR("%1") "\n\
|
str r3, [%0], #4\n\
|
str r3, [%0], #4\n\
|
add r2, r1, r4\n\
|
add r2, r1, r4\n\
|
bic r2, r2, r1\n\
|
bic r2, r2, r1\n\
|
ands r3, r2, r5\n\
|
ands r3, r2, r5\n\
|
beq 0b\n\
|
beq 0b\n\
|
1:"
|
1:"
|
: "=&r" (dest), "=&r" (src)
|
: "=&r" (dest), "=&r" (src)
|
: "0" (dest), "1" (src)
|
: "0" (dest), "1" (src)
|
: "r1", "r2", "r3", "r4", "r5", "memory", "cc");
|
: "r1", "r2", "r3", "r4", "r5", "memory", "cc");
|
}
|
}
|
#endif
|
#endif
|
|
|
while (*dest++ = *src++)
|
while (*dest++ = *src++)
|
asm (PRELOADSTR ("%0") : : "r" (src));
|
asm (PRELOADSTR ("%0") : : "r" (src));
|
return dest0;
|
return dest0;
|
}
|
}
|
|
|
#endif
|
#endif
|
|
|
