diff options
Diffstat (limited to 'kernel/cpu/tss.c')
| -rw-r--r-- | kernel/cpu/tss.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/kernel/cpu/tss.c b/kernel/cpu/tss.c index bda713b..100525b 100644 --- a/kernel/cpu/tss.c +++ b/kernel/cpu/tss.c @@ -11,7 +11,7 @@ struct sys_seg_descriptor { uint64_t : 1; uint64_t DPL : 2; uint64_t present : 1; - uint64_t limit16_19: 4; + uint64_t limit16_19 : 4; uint64_t available : 1; uint64_t : 1; uint64_t : 1; @@ -49,16 +49,17 @@ static volatile struct sys_seg_descriptor *GDT_TSS; // kernel stack pointer extern char kern_stack_end[]; -void tss_init(void) { - uint64_t base = (uint64_t) &tss; +void tss_init(void) +{ + uint64_t base = (uint64_t)&tss; uint64_t limit = sizeof tss - 1; // setup tss entry memsetv(&tss, 0, sizeof(struct tss)); - tss.rsp0 = (uint64_t) kern_stack_end; + tss.rsp0 = (uint64_t)kern_stack_end; // map tss into gdt - GDT_TSS = (volatile struct sys_seg_descriptor *) (GDT + 0x28); + GDT_TSS = (volatile struct sys_seg_descriptor *)(GDT + 0x28); memsetv(GDT_TSS, 0, sizeof(struct sys_seg_descriptor)); GDT_TSS->limit0_15 = limit & 0xFFFF; GDT_TSS->base0_15 = base & 0xFFFF; @@ -75,6 +76,7 @@ void tss_init(void) { tss_flush(); } -void tss_set_stack(uint64_t stack) { +void tss_set_stack(uint64_t stack) +{ tss.rsp0 = stack; } |