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

Added free page count to panic()

Browse Source
This commit is contained in:
Tom-on
2026-03-27 15:05:47 +01:00
parent f316916ff1
commit ad45de562a
4 changed files with 40 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/src/panic.c
+25 -2
View File
@@ -2,9 +2,28 @@
#include <kernel.h>
#include <stdarg.h>
#include <system.h>
#include <pmm.h>
static int crashing = 0;
void panic_call_trace(void) {
uintptr_t* rbp;
__asm__ volatile ("movq %%rbp, %0" : "=r"(rbp));
pr_emerg("Call trace:\n");
for (size_t i = 0; i < 16 && (uintptr_t)rbp > 0x1000; i++) {
uintptr_t retaddr = rbp[1];
offset_t offset = 0;
// TODO: Parse ELF and print function names
char* fname = "???";
pr_emerg(" [<%p>] %s+0x%x\n", retaddr, fname, offset);
rbp = (uintptr_t*)*rbp;
}
}
void panic(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
@@ -24,8 +43,12 @@ void vpanic(const char *fmt, va_list ap) {
len = vsnprintf(buf, sizeof(buf), fmt, ap);
if (len && buf[len - 1] == '\n') buf[len - 1] = '\0';
pr_emerg("--- [ Kernel panic: %s ] ---\n", buf);
//pr_emerg("--- [ End kernel panic: %s ] ---\n", buf);
pr_emerg("--- [ Kernel panic: %s ] ---\n\n", buf);
pr_emerg("%d / %d pages free.\n\n", pmm_free_pages, pmm_total_pages);
panic_call_trace();
pr_emerg("\n--- [ End kernel panic: %s ] ---\n", buf);
// We can add some kind of LED blink or smth later :)
for (;;) __asm__ volatile ("hlt");