Jelajahi Sumber

modernize coding style in sjlj asm

Rich Felker 14 tahun lalu
induk
melakukan
3a17f757a8
4 mengubah file dengan 35 tambahan dan 35 penghapusan
  1. 13 13
      src/setjmp/i386/longjmp.s
  2. 10 10
      src/setjmp/i386/setjmp.s
  3. 10 10
      src/setjmp/x86_64/longjmp.s
  4. 2 2
      src/setjmp/x86_64/setjmp.s

+ 13 - 13
src/setjmp/i386/longjmp.s

@@ -4,19 +4,19 @@
 .type longjmp,%function
 _longjmp:
 longjmp:
-	movl  4(%esp),%edx
-	movl  8(%esp),%eax
-	testl    %eax,%eax
-	jnz .L0
-	incl     %eax
-.L0:
-	movl   (%edx),%ebx
-	movl  4(%edx),%esi
-	movl  8(%edx),%edi
-	movl 12(%edx),%ebp
-	movl 16(%edx),%ecx
-	movl     %ecx,%esp
-	movl 20(%edx),%ecx
+	mov  4(%esp),%edx
+	mov  8(%esp),%eax
+	test    %eax,%eax
+	jnz 1f
+	inc     %eax
+1:
+	mov   (%edx),%ebx
+	mov  4(%edx),%esi
+	mov  8(%edx),%edi
+	mov 12(%edx),%ebp
+	mov 16(%edx),%ecx
+	mov     %ecx,%esp
+	mov 20(%edx),%ecx
 	jmp *%ecx
 .size _longjmp,.-_longjmp
 .size longjmp,.-longjmp

+ 10 - 10
src/setjmp/i386/setjmp.s

@@ -7,16 +7,16 @@
 __setjmp:
 _setjmp:
 setjmp:
-	movl 4(%esp), %eax
-	movl    %ebx, (%eax)
-	movl    %esi, 4(%eax)
-	movl    %edi, 8(%eax)
-	movl    %ebp, 12(%eax)
-	leal 4(%esp), %ecx
-	movl    %ecx, 16(%eax)
-	movl  (%esp), %ecx
-	movl    %ecx, 20(%eax)
-	xorl    %eax, %eax
+	mov 4(%esp), %eax
+	mov    %ebx, (%eax)
+	mov    %esi, 4(%eax)
+	mov    %edi, 8(%eax)
+	mov    %ebp, 12(%eax)
+	lea 4(%esp), %ecx
+	mov    %ecx, 16(%eax)
+	mov  (%esp), %ecx
+	mov    %ecx, 20(%eax)
+	xor    %eax, %eax
 	ret
 .size __setjmp,.-__setjmp
 .size _setjmp,.-_setjmp

+ 10 - 10
src/setjmp/x86_64/longjmp.s

@@ -7,18 +7,18 @@ _longjmp:
 longjmp:
 	mov %rsi,%rax           /* val will be longjmp return */
 	test %rax,%rax
-	jnz .L0
+	jnz 1f
 	inc %rax                /* if val==0, val=1 per longjmp semantics */
-.L0:
-	movq (%rdi),%rbx        /* rdi is the jmp_buf, restore regs from it */
-	movq 8(%rdi),%rbp
-	movq 16(%rdi),%r12
-	movq 24(%rdi),%r13
-	movq 32(%rdi),%r14
-	movq 40(%rdi),%r15
-	movq 48(%rdi),%rdx      /* this ends up being the stack pointer */
+1:
+	mov (%rdi),%rbx         /* rdi is the jmp_buf, restore regs from it */
+	mov 8(%rdi),%rbp
+	mov 16(%rdi),%r12
+	mov 24(%rdi),%r13
+	mov 32(%rdi),%r14
+	mov 40(%rdi),%r15
+	mov 48(%rdi),%rdx       /* this ends up being the stack pointer */
 	mov %rdx,%rsp
-	movq 56(%rdi),%rdx      /* this is the instruction pointer */
+	mov 56(%rdi),%rdx       /* this is the instruction pointer */
 	jmp *%rdx               /* goto saved address without altering rsp */
 .size _longjmp,.-_longjmp
 .size longjmp,.-longjmp

+ 2 - 2
src/setjmp/x86_64/setjmp.s

@@ -14,9 +14,9 @@ setjmp:
 	mov %r13,24(%rdi)
 	mov %r14,32(%rdi)
 	mov %r15,40(%rdi)
-	leaq 8(%rsp),%rdx       /* this is our rsp WITHOUT current ret addr */
+	lea 8(%rsp),%rdx        /* this is our rsp WITHOUT current ret addr */
 	mov %rdx,48(%rdi)
-	movq (%rsp),%rdx        /* save return addr ptr for new rip */
+	mov (%rsp),%rdx         /* save return addr ptr for new rip */
 	mov %rdx,56(%rdi)
 	xor %rax,%rax           /* always return 0 */
 	ret