| 153,23 → 153,27 |
|---|
| */ |
| /* Test if GDT is usable */ |
| movl %gs:0(%ebx),%ecx |
| andl $0x080,%ecx |
| jnz GDT_is_OK |
| /* |
| * Fix the X_RM_BACK_GATE with the address of halt() |
| */ |
| |
| /* Now I test if the check mechanism is OK... */ |
| andl $0x0200,%ecx /* MB_INFO_BOOT_LOADER_NAME */ |
| movl $0xB8000,%edi |
| addl $150,%edi |
| movb $'1',%gs:0(%edi) |
| incl %edi |
| movb $6,%gs:0(%edi) |
| jz GDT_is_not_OK |
| incl %edi |
| movb $'2',%gs:0(%edi) |
| incl %edi |
| movb $6,%gs:0(%edi) |
| |
| movl %gs:64(%ebx), %ebp /* Name Address... */ |
| cmpb $'X', %gs:0(%ebp) |
| je GDT_is_OK |
| GDT_is_not_OK: |
| /* |
| * Fix the X_RM_BACK_GATE with the address of halt() |
| */ |
| |
| /* Now I test if the check mechanism is OK... */ |
| movl $SYMBOL_NAME(halt),%eax |
| movw %ax,%gs:rmBckGateFix1 |
| shrl $16,%eax |