PoliEcho/kern
1
0
Fork 0
forked from PoliEcho-holding-org/kern
Code Pull Requests Activity

Added register dump to panic() and colors to printk()

Browse Source
This commit is contained in:
Tom-on
2026-03-29 20:39:06 +02:00
parent 12ec371196
commit 22852599df
10 changed files with 66 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/src/panic.c
+21 -6
View File
@@ -2,10 +2,25 @@
#include <kernel.h>
#include <stdarg.h>
#include <system.h>
#include <isr.h>
#include <pmm.h>
static int crashing = 0;
void panic_regs_dump(struct isr_int_frame* regs) {
if (regs == NULL) return;
pr_emerg("Register Dump:\n");
pr_emerg("\tRAX: %016lx RBX: %016lx RCX: %016lx\n", regs->rax, regs->rbx, regs->rcx);
pr_emerg("\tRDX: %016lx RSI: %016lx RDI: %016lx\n", regs->rdx, regs->rsi, regs->rdi);
pr_emerg("\tR08: %016lx R09: %016lx R10: %016lx\n", regs->r8, regs->r9, regs->r10);
pr_emerg("\tR11: %016lx R12: %016lx R13: %016lx\n", regs->r11, regs->r12, regs->r13);
pr_emerg("\tR14: %016lx R15: %016lx DS/ES: %016lx\n", regs->r14, regs->r15, regs->ds);
pr_emerg("\tRBP: %016lx RSP: %016lx SS: %016lx\n", regs->rbp, regs->user_rsp, regs->user_ss);
pr_emerg("\tRIP: %016lx RFLAGS: %016lx CS: %016lx\n", regs->rip, regs->rflags, regs->cs);
pr_emerg("\n");
}
void panic_call_trace(void) {
uintptr_t* rbp;
__asm__ volatile ("movq %%rbp, %0" : "=r"(rbp));
@@ -22,16 +37,17 @@ void panic_call_trace(void) {
rbp = (uintptr_t*)*rbp;
}
pr_emerg("\n");
}
void panic(const char *fmt, ...) {
void panic(struct isr_int_frame* regs, const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vpanic(fmt, ap);
vpanic(regs, fmt, ap);
va_end(ap);
}
void vpanic(const char *fmt, va_list ap) {
void vpanic(struct isr_int_frame* regs, const char *fmt, va_list ap) {
static char buf[PANIC_MSG_BUFSZ];
size_t len;
@@ -44,11 +60,10 @@ void vpanic(const char *fmt, va_list ap) {
if (len && buf[len - 1] == '\n') buf[len - 1] = '\0';
pr_emerg("--- [ Kernel panic: %s ] ---\n\n", buf);
pr_emerg("%lu / %lu pages free.\n\n", pmm_free_pages, pmm_total_pages);
panic_regs_dump(regs);
panic_call_trace();
pr_emerg("\n--- [ End kernel panic: %s ] ---\n", buf);
pr_emerg("--- [ End kernel panic: %s ] ---\n", buf);
// We can add some kind of LED blink or smth later :)
for (;;) __asm__ volatile ("hlt");