interrupts, timer, keyboard, segments, lots of kernel code

[bootcensus] / src / panic.c

diff --git a/src/panic.c b/src/panic.c
new file mode 100644 (file)
index 0000000..af79a9e
--- /dev/null
+++ b/src/panic.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include "asmops.h"
+
+struct all_registers {
+       uint32_t eax, ebx, ecx, edx;
+       uint32_t esp, ebp, esi, edi;
+       uint32_t eflags;
+       uint32_t cs, ss, ds, es, fs, gs;
+       uint32_t cr0, cr1, cr2, cr3;
+};
+
+/* defined in regs.S */
+void get_regs(struct all_registers *regs);
+
+void panic(const char *fmt, ...)
+{
+       va_list ap;
+       struct all_registers regs;
+       uint32_t eip;
+
+       disable_intr();
+
+       memset(&regs, 0, sizeof regs);
+       get_regs(&regs);
+
+       CALLER_EIP(eip);
+
+       printf("~~~~~ pcboot panic ~~~~~\n");
+       va_start(ap, fmt);
+       vprintf(fmt, ap);
+       va_end(ap);
+
+       printf("\nRegisters:\n");
+       printf("eax: %x, ebx: %x, ecx: %x, edx: %x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
+       printf("esp: %x, ebp: %x, esi: %x, edi: %x\n", regs.esp, regs.ebp, regs.esi, regs.edi);
+       printf("eip: %x, eflags: %x\n", eip, regs.eflags);
+       printf("cr0: %x, cr1: %x, cr2: %x, cr3: %x\n", regs.cr0, regs.cr1, regs.cr2, regs.cr3);
+       printf("cs: %x (%d|%d)\n", regs.cs, regs.cs >> 3, regs.cs & 3);
+       printf("ss: %x (%d|%d)\n", regs.ss, regs.ss >> 3, regs.ss & 3);
+       printf("ds: %x (%d|%d)\n", regs.ds, regs.ds >> 3, regs.ds & 3);
+       printf("es: %x (%d|%d)\n", regs.es, regs.es >> 3, regs.es & 3);
+       printf("fs: %x (%d|%d)\n", regs.fs, regs.fs >> 3, regs.fs & 3);
+       printf("gs: %x (%d|%d)\n", regs.gs, regs.gs >> 3, regs.gs & 3);
+
+       for(;;) halt_cpu();
+}