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| author | Michael Brown | 2011-04-27 01:07:42 +0200 |
|---|---|---|
| committer | Michael Brown | 2011-04-27 01:26:38 +0200 |
| commit | a9dbc943aeb73d9267bfbefc95106974a3c94ea0 (patch) | |
| tree | 15b6cc23a5f289d182a950e329adfedd4f459626 /src/arch/x86_64/core/linux | |
| parent | [sanboot] Add "sanhook" and "sanunhook" commands (diff) | |
| download | ipxe-a9dbc943aeb73d9267bfbefc95106974a3c94ea0.tar.gz ipxe-a9dbc943aeb73d9267bfbefc95106974a3c94ea0.tar.xz ipxe-a9dbc943aeb73d9267bfbefc95106974a3c94ea0.zip | |
[linux] Avoid building Linux-specific prefix on non-Linux builds
Reported-by: David Yeske <dyeske@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/arch/x86_64/core/linux')
| -rw-r--r-- | src/arch/x86_64/core/linux/linuxprefix.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/arch/x86_64/core/linux/linuxprefix.S b/src/arch/x86_64/core/linux/linuxprefix.S new file mode 100644 index 000000000..713b9e38d --- /dev/null +++ b/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 _start, . - _start |