diff options
Diffstat (limited to 'grub-core/tests/boot/kernel-i386.S')
| -rw-r--r-- | grub-core/tests/boot/kernel-i386.S | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/grub-core/tests/boot/kernel-i386.S b/grub-core/tests/boot/kernel-i386.S new file mode 100644 index 0000000..2154d3b --- /dev/null +++ b/grub-core/tests/boot/kernel-i386.S @@ -0,0 +1,72 @@ +#define ASM_FILE 1 +#ifdef TARGET_MULTIBOOT2 +#include <multiboot2.h> +#elif defined (TARGET_MULTIBOOT) +#include <multiboot.h> +#endif + + .text + /* Align 32 bits boundary. */ + .align 8 + +#ifdef TARGET_MULTIBOOT2 + /* Multiboot header. */ +multiboot_header: + /* magic */ + .long MULTIBOOT2_HEADER_MAGIC + /* ISA: i386 */ + .long MULTIBOOT_ARCHITECTURE_I386 + /* Header length. */ + .long multiboot_header_end - multiboot_header + /* checksum */ + .long -(MULTIBOOT2_HEADER_MAGIC + MULTIBOOT_ARCHITECTURE_I386 + (multiboot_header_end - multiboot_header)) + .short MULTIBOOT_HEADER_TAG_END + .short 0 + .long 8 +multiboot_header_end: +#elif defined (TARGET_MULTIBOOT) + /* Multiboot header. */ +multiboot_header: + /* magic */ + .long MULTIBOOT_HEADER_MAGIC + /* flags */ + .long 0 + /* checksum */ + .long -MULTIBOOT_HEADER_MAGIC +#endif + + .global start + +serialmsg: +1: + movb 0(%esi), %bl + testb %bl, %bl + jz 1f + movw $0x3fd, %dx +2: + inb %dx, %al + testb $0x20, %al + jz 2b + + movw $0x3f8, %dx + movb %bl, %al + outb %al, %dx + incl %esi + jmp 1b +1: + ret + + .globl _start +_start: + lea message, %esi + call serialmsg + +#include "qemu-shutdown-x86.S" + +1: + hlt + jmp 1b + +message: + .ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n" + .byte 0 |