| |
| .text |
| .globl _start |
| _start: |
| base: |
| .code16 |
| jmp cont |
| |
| serialmsg: |
| 1: |
| movb 0(%si), %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 |
| incw %si |
| jmp 1b |
| 1: |
| ret |
| |
| cont: |
| #ifdef TARGET_NTLDR |
| movw $0x2000, %ax |
| #elif defined (TARGET_CHAINLOADER) |
| xorw %ax, %ax |
| #else |
| #error unsupported target |
| #endif |
| movw %ax, %ds |
| lea message, %si |
| call serialmsg |
| #include "qemu-shutdown-x86.S" |
| |
| 1: |
| hlt |
| jmp 1b |
| |
| message: |
| .ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n" |
| .byte 0 |
| |
| .org 510 |
| .short 0xaa55 |
