Rev 117 | Rev 232 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 117 | Rev 177 | ||
|---|---|---|---|
| Line 48... | Line 48... | ||
| 48 | .code16 |
48 | .code16 |
| 49 | cli |
49 | cli |
| 50 | xorw %ax,%ax |
50 | xorw %ax,%ax |
| 51 | movw %ax,%ds |
51 | movw %ax,%ds |
| 52 | 52 | ||
| - | 53 | lgdt gdtr # initialize Global Descriptor Table register |
|
| - | 54 | lidt idtr # initialize Interrupt Descriptor Table register |
|
| 53 | lgdt gdtr |
55 | |
| 54 | movl %cr0,%eax |
56 | movl %cr0,%eax |
| 55 | orl $1,%eax |
57 | orl $1,%eax |
| 56 | movl %eax,%cr0 |
58 | movl %eax,%cr0 # switch to protected mode |
| 57 | jmpl $KTEXT,$jump_to_kernel |
59 | jmpl $KTEXT,$jump_to_kernel |
| 58 | jump_to_kernel: |
60 | jump_to_kernel: |
| 59 | .code32 |
61 | .code32 |
| 60 | movw $KDATA,%ax |
62 | movw $KDATA,%ax |
| 61 | movw %ax,%ds |
63 | movw %ax,%ds |
| Line 63... | Line 65... | ||
| 63 | movw %ax,%ss |
65 | movw %ax,%ss |
| 64 | movl $(ctx-0x80000000),%eax # KA2PA((__address) &ctx) |
66 | movl $(ctx-0x80000000),%eax # KA2PA((__address) &ctx) |
| 65 | movl (%eax),%esp |
67 | movl (%eax),%esp |
| 66 | subl $0x80000000,%esp # KA2PA(ctx.sp) |
68 | subl $0x80000000,%esp # KA2PA(ctx.sp) |
| 67 | 69 | ||
| 68 | lidt idtr |
- | |
| 69 | - | ||
| 70 | call map_kernel |
70 | call map_kernel # map kernel and turn paging on |
| 71 | 71 | ||
| 72 | jmpl $KTEXT,$main_ap |
72 | jmpl $KTEXT,$main_ap |
| 73 | 73 | ||
| 74 | #endif /* __SMP__ */ |
74 | #endif /* __SMP__ */ |