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use r1-r3 as tmp register

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Signed-off-by: zhanghu5 <zhanghu5@xiaomi.com>
This commit is contained in:
zhanghu5
2024-01-02 20:35:29 +08:00
committed by Xiang Xiao
parent c37b0de28c
commit f8f6bfff29
1 changed files with 14 additions and 15 deletions
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libs/libc/machine/arm/gnu/arch_setjmp.S
+14 -15
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@@ -78,13 +78,14 @@ setjmp:
#ifdef CONFIG_ARCH_ARMV6M #ifdef CONFIG_ARCH_ARMV6M
stmia r0!, {r4-r7} /* Save R4 ~ R7 */ stmia r0!, {r4-r7} /* Save R4 ~ R7 */
mov r2, r8 mov r1, r8
mov r3, r9 mov r2, r9
mov r4, r10 mov r3, r10
mov r5, r11 stmia r0!, {r1-r3} /* Save R8 ~ R10 */
mov r6, ip mov r1, r11
mov r7, lr mov r2, ip
stmia r0!, {r2-r7} /* Save R8 ~ R11, IP, LR */ mov r3, lr
stmia r0!, {r1-r3} /* Save R11, IP, LR */
#else #else
stmia r0!, {r4-r11, ip, lr} stmia r0!, {r4-r11, ip, lr}
#endif #endif
@@ -142,15 +143,13 @@ longjmp:
#ifdef CONFIG_ARCH_ARMV6M #ifdef CONFIG_ARCH_ARMV6M
ldmia r0!, {r4-r7} /* Restore R4 ~ R7 */ ldmia r0!, {r4-r7} /* Restore R4 ~ R7 */
ldmia r0!, {r2-r3} /* Restore R8, R9 */ ldmia r0!, {r1-r3} /* Restore R8 ~ R10 */
mov r8, r2 mov r8, r1
mov r9, r3 mov r9, r2
mov r10, r3
ldmia r0!, {r2-r3} /* Restore R10, R11 */ ldmia r0!, {r1-r3} /* Restore R11, IP, LR */
mov r10, r2 mov r11, r1
mov r11, r3
ldmia r0!, {r2-r3} /* Restore IP, LR */
mov ip, r2 mov ip, r2
mov lr, r3 mov lr, r3
#else #else