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| author | Piotr Jaroszyński | 2010-06-09 19:55:09 +0200 |
|---|---|---|
| committer | Michael Brown | 2010-08-19 13:28:21 +0200 |
| commit | bb5b66b8878d48c505fe1a653d5a59e21d3d9380 (patch) | |
| tree | 4d186520cb238ed8080df07dd0ff877f400da366 /src/arch/x86_64 | |
| parent | [dhcp] Use i386-pcbios DHCP options on linux (diff) | |
| download | ipxe-bb5b66b8878d48c505fe1a653d5a59e21d3d9380.tar.gz ipxe-bb5b66b8878d48c505fe1a653d5a59e21d3d9380.tar.xz ipxe-bb5b66b8878d48c505fe1a653d5a59e21d3d9380.zip | |
[linux] Add linuxprefix
Add a minimal _start required to run main.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/arch/x86_64')
| -rw-r--r-- | src/arch/x86_64/prefix/linuxprefix.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/arch/x86_64/prefix/linuxprefix.S b/src/arch/x86_64/prefix/linuxprefix.S new file mode 100644 index 000000000..20163b8a4 --- /dev/null +++ b/src/arch/x86_64/prefix/linuxprefix.S @@ -0,0 +1,22 @@ +#include <linux/unistd.h> + + .section ".text" + .code64 + .globl _start + .type _start, @function + +_start: + xorq %rbp, %rbp + + popq %rdi // argc -> C arg1 + movq %rsp, %rsi // argv -> C arg2 + + andq $~15, %rsp // 16-byte align the stack + + call main + + movq %rax, %rdi // rc -> syscall arg1 + movq $__NR_exit, %rax + syscall + + .size _start, . - _start |