Add a minimal _start required to run main. Signed-off-by: Piotr Jaroszyński <p.jaroszyn...@gmail.com> --- src/arch/i386/prefix/linuxprefix.S | 25 +++++++++++++++++++++++++ src/arch/x86_64/prefix/linuxprefix.S | 22 ++++++++++++++++++++++ 2 files changed, 47 insertions(+), 0 deletions(-) create mode 100644 src/arch/i386/prefix/linuxprefix.S create mode 100644 src/arch/x86_64/prefix/linuxprefix.S
diff --git a/src/arch/i386/prefix/linuxprefix.S b/src/arch/i386/prefix/linuxprefix.S new file mode 100644 index 0000000..881c61d --- /dev/null +++ b/src/arch/i386/prefix/linuxprefix.S @@ -0,0 +1,25 @@ +#include <linux/unistd.h> + + .section ".text" + .code32 + .globl _start + .type _start, @function + +_start: + xorl %ebp, %ebp + + popl %esi // save argc + movl %esp, %edi // save argv + + andl $~15, %esp // 16-byte align the stack + + pushl %edi // argv -> C arg2 + pushl %esi // argc -> C arg1 + + call main + + movl %eax, %ebx // rc -> syscall arg1 + movl $__NR_exit, %eax + int $0x80 + + .size _start, . - _start diff --git a/src/arch/x86_64/prefix/linuxprefix.S b/src/arch/x86_64/prefix/linuxprefix.S new file mode 100644 index 0000000..20163b8 --- /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 -- 1.7.1 _______________________________________________ gPXE-devel mailing list gPXE-devel@etherboot.org http://etherboot.org/mailman/listinfo/gpxe-devel
