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signals: handle SIGBUS, SIGSEGV, SIGILL etc

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Matheus
2024-05-29 11:06:15 -03:00
parent d689766a44
commit c81bdac897
4 changed files with 33 additions and 4 deletions
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kernel-src/arch/x86-64/cpu.c
+18
View File
@@ -7,6 +7,21 @@
#define EFER_SYSCALLENABLE 1
void arch_syscall_entry();
static void illisr(isr_t *self, context_t *ctx) {
if (ARCH_CONTEXT_ISUSER(ctx)) {
signal_signalthread(_cpu()->thread, SIGILL, true);
} else {
_panic("Invalid Opcode", ctx);
}
}
static void div0isr(isr_t *self, context_t *ctx) {
if (ARCH_CONTEXT_ISUSER(ctx)) {
signal_signalthread(_cpu()->thread, SIGFPE, true);
} else {
_panic("Division by 0", ctx);
}
}
void cpu_initstate() {
arch_apic_initap();
@@ -49,4 +64,7 @@ void cpu_initstate() {
"mov %%rax, %%cr0;"
: : : "rax"
);
interrupt_register(0, div0isr, NULL, IPL_IGNORE);
interrupt_register(6, illisr, NULL, IPL_IGNORE);
}
kernel-src/arch/x86-64/mmu.c
+9 -1
View File
@@ -278,10 +278,17 @@ static void pfisr(isr_t *self, context_t *ctx) {
if (ARCH_CONTEXT_ISUSER(ctx))
signal_signalthread(_cpu()->thread, SIGSEGV, true);
else
_panic("Page fault", ctx);
_panic("Page Fault", ctx);
}
}
static void gpfisr(isr_t *self, context_t *ctx) {
if (ARCH_CONTEXT_ISUSER(ctx))
signal_signalthread(_cpu()->thread, SIGSEGV, true);
else
_panic("General Protection Fault", ctx);
}
void arch_mmu_init() {
template = pmm_allocpage(PMM_SECTION_DEFAULT);
__assert(template);
@@ -326,6 +333,7 @@ void arch_mmu_init() {
void arch_mmu_apswitch() {
arch_mmu_switch(FROM_HHDM(template));
interrupt_register(13, gpfisr, NULL, IPL_IGNORE);
interrupt_register(14, pfisr, NULL, IPL_IGNORE);
interrupt_register(0xfe, arch_mmu_tlbipi, ARCH_EOI, IPL_IGNORE);
}