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- .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
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