wok-next annotate linld/stuff/tobzimage.S @ rev 18501
Up firefox-official(41.0.2): fix CVE-2015-7184
| author | Aleksej Bobylev <al.bobylev@gmail.com> |
|---|---|
| date | Fri Oct 16 14:36:34 2015 +0300 (2015-10-16) |
| parents | df58e6c974a3 |
| children | 86c9fae82f47 |
| rev | line source |
|---|---|
| pascal@18228 | 1 .code16 |
| pascal@18228 | 2 .org 0 |
| pascal@18228 | 3 |
| pascal@18228 | 4 jmp start |
| pascal@18228 | 5 .ascii "HdrS" |
| pascal@18228 | 6 .word 0x200 # version |
| pascal@18228 | 7 .long 0 # realmode_swtch |
| pascal@18228 | 8 .word 0x1000 # start_sys_seg |
| pascal@18228 | 9 .word kernel_version |
| pascal@18228 | 10 .byte 0 # type of loader |
| pascal@18228 | 11 .byte 1 # loadflags |
| pascal@18228 | 12 .word 0x8000 # setup_move_size |
| pascal@18228 | 13 .long 0x100000 # code32_start |
| pascal@18228 | 14 .long 0 # ramdisk_image |
| pascal@18228 | 15 .long 0 # ramdisk_size |
| pascal@18228 | 16 .long 0 # bootsect_kludge |
| pascal@18228 | 17 .word 0 # heap_end_ptr 2.01+, patched by bootloader |
| pascal@18228 | 18 start: |
| pascal@18228 | 19 pushf |
| pascal@18228 | 20 cld |
| pascal@18228 | 21 pushw %cs |
| pascal@18228 | 22 pushw $0 |
| pascal@18228 | 23 pushaw |
| pascal@18228 | 24 pushw %ds |
| pascal@18228 | 25 popw %es |
| pascal@18229 | 26 .byte 0x66, 0xB8 # movl $?, %eax |
| pascal@18229 | 27 rep |
| pascal@18229 | 28 movsw |
| pascal@18229 | 29 popaw |
| pascal@18229 | 30 iret |
| pascal@18228 | 31 xorw %di, %di |
| pascal@18228 | 32 pushw %es |
| pascal@18228 | 33 pushw %di |
| pascal@18229 | 34 stosl |
| pascal@18228 | 35 movw $0x200, %di |
| pascal@18228 | 36 movw %sp, %bp |
| pascal@18228 | 37 movw $9, %cx |
| pascal@18228 | 38 z1: |
| pascal@18228 | 39 pushw $0 |
| pascal@18228 | 40 loop z1 |
| pascal@18228 | 41 movw $0x9301, %ax |
| pascal@18228 | 42 cwd # %dx = -1 |
| pascal@18228 | 43 pushw %ax |
| pascal@18228 | 44 pushw %cx |
| pascal@18228 | 45 pushw %dx |
| pascal@18228 | 46 pushw %cx |
| pascal@18228 | 47 movb 0x216, %al |
| pascal@18228 | 48 pushw %ax |
| pascal@18228 | 49 pushw %cx |
| pascal@18228 | 50 pushw %dx |
| pascal@18228 | 51 movb $8, %cl |
| pascal@18228 | 52 z2: |
| pascal@18228 | 53 pushw $0 |
| pascal@18228 | 54 loop z2 |
| pascal@18228 | 55 movw -12(%di), %dx |
| pascal@18228 | 56 mvlp: |
| pascal@18228 | 57 movw %sp, %si |
| pascal@18228 | 58 movw $0x8000, %cx |
| pascal@18228 | 59 movb $0x87, %ah |
| pascal@18228 | 60 int $0x15 |
| pascal@18228 | 61 incw 20(%si) |
| pascal@18228 | 62 incw 28(%si) |
| pascal@18229 | 63 subw $0x1000, %dx |
| pascal@18228 | 64 ja mvlp |
| pascal@18228 | 65 movw %bp, %sp |
| pascal@18228 | 66 movw $0x400, %si |
| pascal@18228 | 67 xorw %cx, %cx |
| pascal@18228 | 68 decb -15(%di) |
| pascal@18228 | 69 movb -15(%di), %ch |
| pascal@18228 | 70 lret |
| pascal@18228 | 71 kernel_version: |
| pascal@18228 | 72 .asciz "zImage" |
| pascal@18228 | 73 .org 512 |
| pascal@18228 | 74 oldsetup: |
| pascal@18228 | 75 |