diff options
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 |