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frame pointer is ebpgit add sdk!

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Katayama Hirofumi MZ 2025-03-30 11:29:32 +09:00
parent 3ea73afe87
commit 76a4172da9
1 changed files with 13 additions and 16 deletions
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29
sdk/lib/crt/setjmp/amd64/setjmp.s
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@ -59,11 +59,10 @@ FUNC _setjmp
mov [rcx + JUMP_BUFFER_R14], r14 /* Store r14 */
mov [rcx + JUMP_BUFFER_R15], r15 /* Store r15 */
lea rax, [rip + SJRET] /* Get the return address (see SJRET below) */
mov [rcx + JUMP_BUFFER_Rip], rax /* Store rip (return address) */
mov [rcx + JUMP_BUFFER_Frame], ebp /* Store frame pointer (ebp) */
mov rax, [rsp + 8] /* Get frame pointer */
mov [rcx + JUMP_BUFFER_Frame], rax /* Store frame pointer */
lea rax, [esp + 8] /* Get the return address */
mov [rcx + JUMP_BUFFER_Rip], rax /* Store rip (return address) */
movdqu [rcx + JUMP_BUFFER_Xmm6], xmm6 /* Store xmm6 */
movdqu [rcx + JUMP_BUFFER_Xmm7], xmm7 /* Store xmm7 */
@ -76,8 +75,7 @@ FUNC _setjmp
movdqu [rcx + JUMP_BUFFER_Xmm14], xmm14 /* Store xmm14 */
movdqu [rcx + JUMP_BUFFER_Xmm15], xmm15 /* Store xmm15 */
xor eax, eax /* Return 0 on first (_setjmp) return */
SJRET:
xor rax, rax /* Return 0 on first (_setjmp) return */
ret
ENDFUNC
@ -104,10 +102,10 @@ FUNC _setjmpex
mov [rcx + JUMP_BUFFER_R14], r14 /* Store r14 */
mov [rcx + JUMP_BUFFER_R15], r15 /* Store r15 */
lea rax, [rip + SJXRET] /* Get the return address (see SJXRET below) */
mov [rcx + JUMP_BUFFER_Rip], rax /* Store rip (return address) */
mov [rcx + JUMP_BUFFER_Frame], rdx /* Store frame pointer (rdx) */
mov [rcx + JUMP_BUFFER_Frame], rdx /* Store frame */
lea rax, [esp + 8] /* Get the return address */
mov [rcx + JUMP_BUFFER_Rip], rax /* Store rip (return address) */
movdqu [rcx + JUMP_BUFFER_Xmm6], xmm6 /* Store xmm6 */
movdqu [rcx + JUMP_BUFFER_Xmm7], xmm7 /* Store xmm7 */
@ -120,9 +118,7 @@ FUNC _setjmpex
movdqu [rcx + JUMP_BUFFER_Xmm14], xmm14 /* Store xmm14 */
movdqu [rcx + JUMP_BUFFER_Xmm15], xmm15 /* Store xmm15 */
xor eax, eax /* Return 0 on first (_setjmpex) return */
SJXRET:
xor rax, rax /* Return 0 on first (_setjmpex) return */
ret
ENDFUNC
@ -150,8 +146,7 @@ FUNC longjmp
mov r14, [rcx + JUMP_BUFFER_R14] /* Restore r14 */
mov r15, [rcx + JUMP_BUFFER_R15] /* Restore r15 */
mov rax, [rcx + JUMP_BUFFER_Frame] /* Get frame pointer */
mov [rsp + 8], rax /* Restore frame pointer */
mov ebp, [rcx + JUMP_BUFFER_Frame] /* Get frame pointer (ebp) */
movdqu xmm6, [rcx + JUMP_BUFFER_Xmm6] /* Restore xmm6 */
movdqu xmm7, [rcx + JUMP_BUFFER_Xmm7] /* Restore xmm7 */
@ -164,15 +159,17 @@ FUNC longjmp
movdqu xmm14, [rcx + JUMP_BUFFER_Xmm14] /* Restore xmm14 */
movdqu xmm15, [rcx + JUMP_BUFFER_Xmm15] /* Restore xmm15 */
mov rax, rdx /* Move val into rax (return value) */
mov rax, [rcx + JUMP_BUFFER_Rip] /* Get return address */
mov [esp + 8], rax /* Store return address */
mov rax, rdx /* Move val into rax (return value) */
test rax, rax /* Check if val is 0 */
jnz LJJMP /* If val is non-zero, jump to LJJMP */
inc rax /* Increment rax */
LJJMP:
jmp qword ptr [rcx + JUMP_BUFFER_Rip] /* Jump to the stored return address (rip) */
ret
ENDFUNC
END