diff options
Diffstat (limited to 'libc/sysdeps/linux/arm/__longjmp.S')
| -rw-r--r-- | libc/sysdeps/linux/arm/__longjmp.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/__longjmp.S b/libc/sysdeps/linux/arm/__longjmp.S index 4261797f8..5faf4ece9 100644 --- a/libc/sysdeps/linux/arm/__longjmp.S +++ b/libc/sysdeps/linux/arm/__longjmp.S @@ -18,6 +18,7 @@ 02111-1307 USA. */ #include <features.h> +#include <bits/arm_asm.h> #define _SETJMP_H #define _ASM #include <bits/setjmp.h> @@ -26,13 +27,44 @@ .global __longjmp .type __longjmp,%function .align 2 +#if defined(THUMB1_ONLY) +.thumb_func +__longjmp: + mov r2, r0 + movs r0, r1 + /* can't let setjmp() return zero! */ + bne 1f + mov r0, #1 +1: + mov r1, r2 + /* Restore registers, shuffling them through low regs. */ + add r2, #(4 * 4) + ldmia r2!, {r4, r5, r6, r7} + mov r8, r4 + mov r9, r5 + mov sl, r6 + mov fp, r7 + ldmia r2!, {r4, r5} + mov sp, r4 + mov lr, r5 + ldmia r1!, {r4, r5, r6, r7} + bx lr +#else __longjmp: mov ip, r0 /* save jmp_buf pointer */ movs r0, r1 /* get the return value in place */ + IT(t, eq) moveq r0, #1 /* can't let setjmp() return zero! */ +#if defined(__thumb2__) + /* Thumb-2 does not allow loading sp with ldm. */ + ldmia ip!, {v1-v6, sl, fp} + ldr sp, [ip], #4 + ldr lr, [ip], #4 +#else ldmia ip!, {v1-v6, sl, fp, sp, lr} +#endif #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ #ifdef __VFP_FP__ @@ -76,6 +108,7 @@ __longjmp: #else mov pc, lr #endif +#endif .size __longjmp,.-__longjmp libc_hidden_def(__longjmp) |