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libs/libc: fixed armv7-m strcmp build issue

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Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
This commit is contained in:
zhangyuan21 2023-05-04 13:04:59 +08:00 committed by hartmannathan
parent 1be95c3313
commit 73257eeda0
1 changed files with 30 additions and 0 deletions
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30
libs/libc/machine/arm/armv7-m/gnu/arch_strcmp.S
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@ -34,6 +34,28 @@
#include "arm_asm.h" #include "arm_asm.h"
#ifdef __ARM_BIG_ENDIAN
#define S2LO lsl
#define S2LOEQ lsleq
#define S2HI lsr
#define MSB 0x000000ff
#define LSB 0xff000000
#define BYTE0_OFFSET 24
#define BYTE1_OFFSET 16
#define BYTE2_OFFSET 8
#define BYTE3_OFFSET 0
#else /* not __ARM_BIG_ENDIAN */
#define S2LO lsr
#define S2LOEQ lsreq
#define S2HI lsl
#define BYTE0_OFFSET 0
#define BYTE1_OFFSET 8
#define BYTE2_OFFSET 16
#define BYTE3_OFFSET 24
#define MSB 0xff000000
#define LSB 0x000000ff
#endif /* not __ARM_BIG_ENDIAN */
/* Parameters and result. */ /* Parameters and result. */
#define src1 r0 #define src1 r0
#define src2 r1 #define src2 r1
@ -46,6 +68,14 @@
#define tmp1 r12 #define tmp1 r12
#define syndrome r12 /* Overlaps tmp1 */ #define syndrome r12 /* Overlaps tmp1 */
.macro def_fn f p2align=0
.text
.p2align \p2align
.global \f
.type \f, %function
\f:
.endm
.thumb .thumb
.syntax unified .syntax unified
def_fn strcmp def_fn strcmp