| .text |
| .arch i386 |
| .code16 |
| .section ".prefix", "ax", @progbits |
| .org 0 |
| |
| nbi_header: |
| |
| /***************************************************************************** |
| * NBI file header |
| ***************************************************************************** |
| */ |
| file_header: |
| .long 0x1b031336 /* Signature */ |
| .byte 0x04 /* 16 bytes header, no vendor info */ |
| .byte 0 |
| .byte 0 |
| .byte 0 /* No flags */ |
| .word 0x0000, 0x07c0 /* Load header to 0x07c0:0x0000 */ |
| .word entry, 0x07c0 /* Start execution at 0x07c0:entry */ |
| .size file_header, . - file_header |
| |
| /***************************************************************************** |
| * NBI segment header |
| ***************************************************************************** |
| */ |
| segment_header: |
| .byte 0x04 /* 16 bytes header, no vendor info */ |
| .byte 0 |
| .byte 0 |
| .byte 0x04 /* Last segment */ |
| .long 0x00007e00 |
| imglen: .long -512 |
| memlen: .long -512 |
| .size segment_header, . - segment_header |
| |
| .section ".zinfo.fixup", "a", @progbits /* Compressor fixups */ |
| .ascii "ADDL" |
| .long imglen |
| .long 1 |
| .long 0 |
| .ascii "ADDL" |
| .long memlen |
| .long 1 |
| .long 0 |
| .previous |
| |
| /***************************************************************************** |
| * NBI entry point |
| ***************************************************************************** |
| */ |
| entry: |
| /* Install gPXE */ |
| call install |
| |
| /* Jump to .text16 segment */ |
| pushw %ax |
| pushw $1f |
| lret |
| .section ".text16", "awx", @progbits |
| 1: |
| pushl $main |
| pushw %cs |
| call prot_call |
| popl %ecx /* discard */ |
| |
| /* Uninstall gPXE */ |
| call uninstall |
| |
| /* Reboot system */ |
| int $0x19 |
| |
| .previous |
| .size entry, . - entry |
| |
| nbi_header_end: |
| .org 512 |
