kamkow1/my-os-project2
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

C userspace programs

Browse Source
This commit is contained in:
Kamil Kowalczyk
2025-09-04 23:20:30 +02:00
parent afa4d383e0
commit 90266f044b
51 changed files with 259 additions and 174 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
kernel/hal/x86_64/intr.c
View File

@ -11,6 +11,8 @@
#include "apic.h"
#include "pit.h"
#include "proc/proc.h"
#include "syscall/syscall.h"
#include "errors.h"
void hal_intr_disable(void) {
asm volatile("cli");
@ -122,6 +124,9 @@ void intr_init(void) {
MKINTR(45, 0);
MKINTR(46, 0);
MKINTR(47, 0);
extern void intr_vec128(void);
idt_setentry(0x80, (uint64_t)&intr_vec128, 0, 0xEE);
idt_init();
}
@ -149,14 +154,33 @@ void intr_dumpframe(IntrStackFrame *frame) {
);
}
void hal_syscalldispatch(IntrStackFrame *frame) {
uint64_t sysnum = frame->regs.rax;
if (sysnum < SYSCALLS_MAX) {
SyscallFn fn = SYSCALL_TABLE[sysnum];
if (fn == NULL) {
frame->regs.rax = E_BADSYSCALL;
return;
}
int32_t ret = fn(frame->regs.rdi, frame->regs.rsi, frame->regs.rdx,
frame->regs.r10, frame->regs.r8, frame->regs.r9);
if (sysnum == SYS_QUITPROC) {
proc_sched((void *)frame);
}
frame->regs.rax = *(uint64_t *)&ret;
}
}
void intr_handleintr(IntrStackFrame *frame) {
if (frame->trapnum <= 31) {
kprintf("ERROR %s, 0x%lX\n", exceptions[frame->trapnum], frame->errnum);
intr_dumpframe(frame);
if (frame->trapnum == 14 && frame->errnum & 0x4) {
kprintf("killed pid %ld %s\n", PROCS.current->pid, PROCS.current->name);
proc_killself();
proc_sched((void *)frame);
}
kprintf("ERROR %s, 0x%lX\n", exceptions[frame->trapnum], frame->errnum);
intr_dumpframe(frame);
hal_hang();
} else if (frame->trapnum >= 32 && frame->trapnum <= 47) {
if (frame->trapnum == INTR_TIMER) {
@ -167,6 +191,8 @@ void intr_handleintr(IntrStackFrame *frame) {
lapic_write(LAPIC_EOI, 0x00);
proc_sched((void *)frame);
} else if (frame->trapnum == 0x80) {
hal_syscalldispatch(frame);
}
}