diff options
Diffstat (limited to '05/musl-0.6.0/src/setjmp')
-rw-r--r-- | 05/musl-0.6.0/src/setjmp/i386/longjmp.s | 22 | ||||
-rw-r--r-- | 05/musl-0.6.0/src/setjmp/i386/setjmp.s | 23 | ||||
-rw-r--r-- | 05/musl-0.6.0/src/setjmp/longjmp.c | 0 | ||||
-rw-r--r-- | 05/musl-0.6.0/src/setjmp/setjmp.c | 0 | ||||
-rw-r--r-- | 05/musl-0.6.0/src/setjmp/x86_64/longjmp.s | 24 | ||||
-rw-r--r-- | 05/musl-0.6.0/src/setjmp/x86_64/setjmp.s | 25 |
6 files changed, 94 insertions, 0 deletions
diff --git a/05/musl-0.6.0/src/setjmp/i386/longjmp.s b/05/musl-0.6.0/src/setjmp/i386/longjmp.s new file mode 100644 index 0000000..c1a956c --- /dev/null +++ b/05/musl-0.6.0/src/setjmp/i386/longjmp.s @@ -0,0 +1,22 @@ +.global _longjmp +.global longjmp +.type _longjmp,%function +.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 + jmp *%ecx +.size _longjmp,.-_longjmp +.size longjmp,.-longjmp diff --git a/05/musl-0.6.0/src/setjmp/i386/setjmp.s b/05/musl-0.6.0/src/setjmp/i386/setjmp.s new file mode 100644 index 0000000..6c078b1 --- /dev/null +++ b/05/musl-0.6.0/src/setjmp/i386/setjmp.s @@ -0,0 +1,23 @@ +.global __setjmp +.global _setjmp +.global setjmp +.type __setjmp,%function +.type _setjmp,%function +.type setjmp,%function +__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 + ret +.size __setjmp,.-__setjmp +.size _setjmp,.-_setjmp +.size setjmp,.-setjmp diff --git a/05/musl-0.6.0/src/setjmp/longjmp.c b/05/musl-0.6.0/src/setjmp/longjmp.c new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/05/musl-0.6.0/src/setjmp/longjmp.c diff --git a/05/musl-0.6.0/src/setjmp/setjmp.c b/05/musl-0.6.0/src/setjmp/setjmp.c new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/05/musl-0.6.0/src/setjmp/setjmp.c diff --git a/05/musl-0.6.0/src/setjmp/x86_64/longjmp.s b/05/musl-0.6.0/src/setjmp/x86_64/longjmp.s new file mode 100644 index 0000000..c63b0c9 --- /dev/null +++ b/05/musl-0.6.0/src/setjmp/x86_64/longjmp.s @@ -0,0 +1,24 @@ +/* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */ +.global _longjmp +.global longjmp +.type _longjmp,%function +.type longjmp,%function +_longjmp: +longjmp: + mov %rsi,%rax /* val will be longjmp return */ + test %rax,%rax + jnz .L0 + 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 */ + mov %rdx,%rsp + movq 56(%rdi),%rdx /* this is the instruction pointer */ + jmp *%rdx /* goto saved address without altering rsp */ +.size _longjmp,.-_longjmp +.size longjmp,.-longjmp diff --git a/05/musl-0.6.0/src/setjmp/x86_64/setjmp.s b/05/musl-0.6.0/src/setjmp/x86_64/setjmp.s new file mode 100644 index 0000000..8f29fa8 --- /dev/null +++ b/05/musl-0.6.0/src/setjmp/x86_64/setjmp.s @@ -0,0 +1,25 @@ +/* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */ +.global __setjmp +.global _setjmp +.global setjmp +.type __setjmp,%function +.type _setjmp,%function +.type setjmp,%function +__setjmp: +_setjmp: +setjmp: + mov %rbx,(%rdi) /* rdi is jmp_buf, move registers onto it */ + mov %rbp,8(%rdi) + mov %r12,16(%rdi) + mov %r13,24(%rdi) + mov %r14,32(%rdi) + mov %r15,40(%rdi) + leaq 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 %rdx,56(%rdi) + xor %rax,%rax /* always return 0 */ + ret +.size __setjmp,.-__setjmp +.size _setjmp,.-_setjmp +.size setjmp,.-setjmp |