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Support doing calltraces on user-space/kernel crashes.

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This commit is contained in:
Jonas 'Sortie' Termansen 2013-01-26 00:31:57 +01:00
parent 7b3fd0f06f
commit bb284d9421
1 changed files with 16 additions and 1 deletions
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17
sortix/interrupt.cpp
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@ -32,6 +32,7 @@
#include <string.h>
#include "x86-family/idt.h"
#include "calltrace.h"
#include "signal.h"
#include "process.h"
@ -61,6 +62,8 @@ extern "C" { unsigned long asm_is_cpu_interrupted = 0; }
const bool DEBUG_EXCEPTION = true;
const bool DEBUG_IRQ = false;
const bool DEBUG_ISR = false;
const bool CALLTRACE_KERNEL = false;
const bool CALLTRACE_USER = false;
bool initialized;
const size_t NUM_KNOWN_EXCEPTIONS = 20;
@ -230,7 +233,19 @@ void CrashHandler(CPU::InterruptRegisters* regs)
// Halt and catch fire if we are the kernel.
unsigned codemode = regs->cs & 0x3U;
if ( codemode == 0 )
bool is_in_kernel = !codemode;
bool is_in_user = !is_in_kernel;
if ( (is_in_kernel && CALLTRACE_KERNEL) || (is_in_user && CALLTRACE_USER) )
#if defined(__x86_64__)
Calltrace::Perform(regs->rbp);
#elif defined(__i386__)
Calltrace::Perform(regs->ebp);
#else
#error Please provide a calltrace implementation for your CPU.
#endif
if ( is_in_kernel )
{
PanicF("Unhandled CPU Exception id %zu '%s' at ip=0x%zx "
"(cr2=0x%p, err_code=0x%p)", regs->int_no, message,