diff options
Diffstat (limited to 'payloads/libpayload/i386/head.S')
| -rw-r--r-- | payloads/libpayload/i386/head.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/payloads/libpayload/i386/head.S b/payloads/libpayload/i386/head.S index 54f60e1469..db18a5195f 100644 --- a/payloads/libpayload/i386/head.S +++ b/payloads/libpayload/i386/head.S @@ -27,6 +27,7 @@ * SUCH DAMAGE. */ + .code32 .global _entry, _leave .text .align 4 @@ -42,6 +43,21 @@ _entry: /* We're back - go back to the bootloader. */ ret + .align 4 + +#define MB_MAGIC 0x1BADB002 +#define MB_FLAGS 0x00010003 + +mb_header: + .long MB_MAGIC + .long MB_FLAGS + .long -(MB_MAGIC + MB_FLAGS) + .long mb_header + .long _start + .long _edata + .long _end + .long _init + /* * This function saves off the previous stack and switches us to our * own execution environment. @@ -53,6 +69,11 @@ _init: /* Store current stack pointer. */ movl %esp, %esi + /* Store EAX and EBX */ + + movl %eax,loader_eax + movl %ebx,loader_ebx + /* Setup new stack. */ movl $_stack, %ebx |