diff options
Diffstat (limited to 'libc/sysdeps/linux/vax/__longjmp.S')
| -rw-r--r-- | libc/sysdeps/linux/vax/__longjmp.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/vax/__longjmp.S b/libc/sysdeps/linux/vax/__longjmp.S new file mode 100644 index 000000000..a48581fa9 --- /dev/null +++ b/libc/sysdeps/linux/vax/__longjmp.S @@ -0,0 +1,43 @@ +#include <features.h> + +# longjmp.S atp sept 2001 +# restore regs and info and jmp back to a previous setjmp + +.globl __longjmp +.align 4 +__longjmp: + .word 0x0040 # this matches setjmp and PLT + movl 0x4(%ap), %r0 # our scratch reg +# movl $0, %r0 +# movl (%r0), %r0 + # we are going to modify our stack frame + # to the same as that of the setjmp we called earlier + movl (%r0), (%fp) # cond handler + movl 0x4(%r0), 0x4(%fp) # psw + movl 0x8(%r0), 0x8(%fp) # ap + movl 0xc(%r0), 0xc(%fp) # fp + movl 0x10(%r0), 0x10(%fp) # pc + + # restore the regs + movl 0x14(%r0), %r1 + movl 0x18(%r0), %r2 + movl 0x1c(%r0), %r3 + movl 0x20(%r0), %r4 + movl 0x24(%r0), %r5 + movl 0x28(%r0), %r6 + movl 0x2c(%r0), %r7 + movl 0x30(%r0), %r8 + movl 0x34(%r0), %r9 + movl 0x38(%r0), %r10 + movl 0x3c(%r0), %r11 + + # check val and set to 1 if set to zero + movl 0x8(%ap), %r0 + tstl %r0 + bneq exit_ok + movl $0x1, %r0 +exit_ok: + ret +.size __longjmp,.-__longjmp +libc_hidden_def(__longjmp) + |