diff options
| author |   Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
|---|---|---|
| committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
| commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
| tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S | |
| parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) | |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S')
| -rw-r--r-- | qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S b/qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S new file mode 100644 index 000000000..ec8a9decd --- /dev/null +++ b/qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S @@ -0,0 +1,25 @@ +#include <linux/unistd.h> + + .section ".text" + .code64 + .globl _linux_start + .type _linux_start, @function + +_linux_start: + xorq %rbp, %rbp + + popq %rdi // argc -> C arg1 + movq %rsp, %rsi // argv -> C arg2 + + andq $~15, %rsp // 16-byte align the stack + + call save_args + + /* Our main doesn't use any arguments */ + call main + + movq %rax, %rdi // rc -> syscall arg1 + movq $__NR_exit, %rax + syscall + + .size _linux_start, . - _linux_start |