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| author | Jeff Johnston <jjohnstn@redhat.com> | 2002-04-20 00:29:51 +0000 |
|---|---|---|
| committer | Jeff Johnston <jjohnstn@redhat.com> | 2002-04-20 00:29:51 +0000 |
| commit | 59be22909b8ed45624a24fe9952d69a1280bd858 (patch) | |
| tree | ae61de2700d322ec1d33d8d19b3ad8c67973122a /newlib/libc/machine/xscale/strcmp.c | |
| parent | 2dd4c4dc18707380351de8dd7eeef630bf6a60ab (diff) | |
| download | cygnal-59be22909b8ed45624a24fe9952d69a1280bd858.tar.gz cygnal-59be22909b8ed45624a24fe9952d69a1280bd858.tar.bz2 cygnal-59be22909b8ed45624a24fe9952d69a1280bd858.zip | |
2002-04-19 Bill Siegmund
* libc/machine/xscale/memchr.c: Don't use multi-line strings.
* libc/machine/xscale/memcmp.c: Ditto.
* libc/machine/xscale/memcpy.c: Ditto.
* libc/machine/xscale/memmove.c: Ditto.
* libc/machine/xscale/memset.c: Ditto.
* libc/machine/xscale/strchr.c: Ditto.
* libc/machine/xscale/strcmp.c: Ditto.
* libc/machine/xscale/strcpy.c: Ditto.
* libc/machine/xscale/strlen.c: Ditto.
Diffstat (limited to 'newlib/libc/machine/xscale/strcmp.c')
| -rw-r--r-- | newlib/libc/machine/xscale/strcmp.c | 94 |
1 files changed, 47 insertions, 47 deletions
diff --git a/newlib/libc/machine/xscale/strcmp.c b/newlib/libc/machine/xscale/strcmp.c index d9ec99b5d..6c94d126f 100644 --- a/newlib/libc/machine/xscale/strcmp.c +++ b/newlib/libc/machine/xscale/strcmp.c @@ -32,58 +32,58 @@ strcmp (const char *s1, const char *s2) ip = 0x80808080 */ asm ( - "ldr r2, [%1, #0] - ldr r3, [%2, #0] - cmp r2, r3 - bne 2f - - mov ip, #0x80 - add ip, ip, #0x8000 - add ip, ip, ip, lsl #16 - mvn lr, ip, lsl #1 - -0: - ldr r2, [%1, #0] - add r3, r2, lr - bic r3, r3, r2 - tst r3, ip - beq 1f - mov %0, #0x0 - b 3f -1: - ldr r2, [%1, #4]! - ldr r3, [%2, #4]! -" PRELOADSTR("%1") " -" PRELOADSTR("%2") " - cmp r2, r3 + "ldr r2, [%1, #0]\n\ + ldr r3, [%2, #0]\n\ + cmp r2, r3\n\ + bne 2f\n\ +\n\ + mov ip, #0x80\n\ + add ip, ip, #0x8000\n\ + add ip, ip, ip, lsl #16\n\ + mvn lr, ip, lsl #1\n\ +\n\ +0:\n\ + ldr r2, [%1, #0]\n\ + add r3, r2, lr\n\ + bic r3, r3, r2\n\ + tst r3, ip\n\ + beq 1f\n\ + mov %0, #0x0\n\ + b 3f\n\ +1:\n\ + ldr r2, [%1, #4]!\n\ + ldr r3, [%2, #4]!\n\ +" PRELOADSTR("%1") "\n\ +" PRELOADSTR("%2") "\n\ + cmp r2, r3\n\ beq 0b" /* The following part could be done in a C loop as well, but it needs to be assembler to save some cycles in the case where the optimized loop above finds the strings to be equal. */ -" -2: - ldrb r2, [%1, #0] -" PRELOADSTR("%1") " -" PRELOADSTR("%2") " - cmp r2, #0x0 - beq 1f - ldrb r3, [%2, #0] - cmp r2, r3 - bne 1f -0: - ldrb r3, [%1, #1]! - add %2, %2, #1 - ands ip, r3, #0xff - beq 1f - ldrb r3, [%2] - cmp ip, r3 - beq 0b -1: - ldrb lr, [%1, #0] - ldrb ip, [%2, #0] - rsb %0, ip, lr -3: +"\n\ +2:\n\ + ldrb r2, [%1, #0]\n\ +" PRELOADSTR("%1") "\n\ +" PRELOADSTR("%2") "\n\ + cmp r2, #0x0\n\ + beq 1f\n\ + ldrb r3, [%2, #0]\n\ + cmp r2, r3\n\ + bne 1f\n\ +0:\n\ + ldrb r3, [%1, #1]!\n\ + add %2, %2, #1\n\ + ands ip, r3, #0xff\n\ + beq 1f\n\ + ldrb r3, [%2]\n\ + cmp ip, r3\n\ + beq 0b\n\ +1:\n\ + ldrb lr, [%1, #0]\n\ + ldrb ip, [%2, #0]\n\ + rsb %0, ip, lr\n\ +3:\n\ " : "=r" (result), "=&r" (s1), "=&r" (s2) |