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| author | Freya Murphy <freya@freyacat.org> | 2025-04-24 11:32:03 -0400 |
|---|---|---|
| committer | Freya Murphy <freya@freyacat.org> | 2025-04-24 11:32:03 -0400 |
| commit | 65f10ab06b9918ee971ec14a3d18db9f27da99c9 (patch) | |
| tree | 3cae3fbc19d6122da2edc5b069f304d89f7932f4 /kernel/cpu | |
| parent | add tss (diff) | |
| download | comus-65f10ab06b9918ee971ec14a3d18db9f27da99c9.tar.gz comus-65f10ab06b9918ee971ec14a3d18db9f27da99c9.tar.bz2 comus-65f10ab06b9918ee971ec14a3d18db9f27da99c9.zip | |
make 0x80 ring3, add kernel mem ctx switch in idt handler
Diffstat (limited to 'kernel/cpu')
| -rw-r--r-- | kernel/cpu/idt.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/cpu/idt.c b/kernel/cpu/idt.c index bf4b499..8bddc21 100644 --- a/kernel/cpu/idt.c +++ b/kernel/cpu/idt.c @@ -3,6 +3,7 @@ #include <comus/asm.h> #include <comus/cpu.h> #include <comus/drivers/pit.h> +#include <comus/memory.h> #include "idt.h" #include "pic.h" @@ -66,6 +67,9 @@ void idt_init(void) entry->isr_mid = (isr >> 16) & 0xffff; entry->isr_high = (isr >> 32) & 0xffffffff; entry->reserved = 0; + + if (vector == 0x80) + entry->flags |= RING3; } __asm__ volatile("lidt %0" : : "m"(idtr)); @@ -116,6 +120,9 @@ void idt_exception_handler(uint64_t exception, uint64_t code, { uint64_t cr2; + // make sure were in the kernel memory context + mem_ctx_switch(kernel_mem_ctx); + switch (exception) { case EX_PAGE_FAULT: // page faults store the offending address in cr2 |