modernize coding style in sjlj asm
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parent
86339bc4ba
commit
3a17f757a8
4 changed files with 35 additions and 35 deletions
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@ -4,19 +4,19 @@
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.type longjmp,%function
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.type longjmp,%function
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_longjmp:
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_longjmp:
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longjmp:
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longjmp:
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movl 4(%esp),%edx
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mov 4(%esp),%edx
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movl 8(%esp),%eax
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mov 8(%esp),%eax
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testl %eax,%eax
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test %eax,%eax
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jnz .L0
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jnz 1f
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incl %eax
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inc %eax
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.L0:
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1:
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movl (%edx),%ebx
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mov (%edx),%ebx
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movl 4(%edx),%esi
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mov 4(%edx),%esi
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movl 8(%edx),%edi
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mov 8(%edx),%edi
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movl 12(%edx),%ebp
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mov 12(%edx),%ebp
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movl 16(%edx),%ecx
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mov 16(%edx),%ecx
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movl %ecx,%esp
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mov %ecx,%esp
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movl 20(%edx),%ecx
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mov 20(%edx),%ecx
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jmp *%ecx
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jmp *%ecx
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.size _longjmp,.-_longjmp
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.size _longjmp,.-_longjmp
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.size longjmp,.-longjmp
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.size longjmp,.-longjmp
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@ -7,16 +7,16 @@
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__setjmp:
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__setjmp:
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_setjmp:
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_setjmp:
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setjmp:
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setjmp:
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movl 4(%esp), %eax
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mov 4(%esp), %eax
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movl %ebx, (%eax)
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mov %ebx, (%eax)
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movl %esi, 4(%eax)
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mov %esi, 4(%eax)
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movl %edi, 8(%eax)
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mov %edi, 8(%eax)
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movl %ebp, 12(%eax)
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mov %ebp, 12(%eax)
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leal 4(%esp), %ecx
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lea 4(%esp), %ecx
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movl %ecx, 16(%eax)
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mov %ecx, 16(%eax)
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movl (%esp), %ecx
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mov (%esp), %ecx
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movl %ecx, 20(%eax)
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mov %ecx, 20(%eax)
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xorl %eax, %eax
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xor %eax, %eax
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ret
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ret
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.size __setjmp,.-__setjmp
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.size __setjmp,.-__setjmp
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.size _setjmp,.-_setjmp
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.size _setjmp,.-_setjmp
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@ -7,18 +7,18 @@ _longjmp:
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longjmp:
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longjmp:
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mov %rsi,%rax /* val will be longjmp return */
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mov %rsi,%rax /* val will be longjmp return */
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test %rax,%rax
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test %rax,%rax
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jnz .L0
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jnz 1f
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inc %rax /* if val==0, val=1 per longjmp semantics */
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inc %rax /* if val==0, val=1 per longjmp semantics */
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.L0:
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1:
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movq (%rdi),%rbx /* rdi is the jmp_buf, restore regs from it */
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mov (%rdi),%rbx /* rdi is the jmp_buf, restore regs from it */
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movq 8(%rdi),%rbp
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mov 8(%rdi),%rbp
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movq 16(%rdi),%r12
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mov 16(%rdi),%r12
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movq 24(%rdi),%r13
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mov 24(%rdi),%r13
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movq 32(%rdi),%r14
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mov 32(%rdi),%r14
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movq 40(%rdi),%r15
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mov 40(%rdi),%r15
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movq 48(%rdi),%rdx /* this ends up being the stack pointer */
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mov 48(%rdi),%rdx /* this ends up being the stack pointer */
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mov %rdx,%rsp
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mov %rdx,%rsp
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movq 56(%rdi),%rdx /* this is the instruction pointer */
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mov 56(%rdi),%rdx /* this is the instruction pointer */
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jmp *%rdx /* goto saved address without altering rsp */
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jmp *%rdx /* goto saved address without altering rsp */
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.size _longjmp,.-_longjmp
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.size _longjmp,.-_longjmp
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.size longjmp,.-longjmp
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.size longjmp,.-longjmp
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@ -14,9 +14,9 @@ setjmp:
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mov %r13,24(%rdi)
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mov %r13,24(%rdi)
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mov %r14,32(%rdi)
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mov %r14,32(%rdi)
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mov %r15,40(%rdi)
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mov %r15,40(%rdi)
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leaq 8(%rsp),%rdx /* this is our rsp WITHOUT current ret addr */
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lea 8(%rsp),%rdx /* this is our rsp WITHOUT current ret addr */
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mov %rdx,48(%rdi)
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mov %rdx,48(%rdi)
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movq (%rsp),%rdx /* save return addr ptr for new rip */
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mov (%rsp),%rdx /* save return addr ptr for new rip */
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mov %rdx,56(%rdi)
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mov %rdx,56(%rdi)
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xor %rax,%rax /* always return 0 */
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xor %rax,%rax /* always return 0 */
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ret
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ret
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