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Matheus
91ec85d8ca
Panics currently lack backtraces, which are a very useful thing to have. Make the profiling backtrace function generic and print backtraces using it.
45 lines
865 B
C
45 lines
865 B
C
#include <panic.h>
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#include <arch/cpu.h>
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#include <arch/smp.h>
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#include <printf.h>
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#include <kernel/interrupt.h>
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#include <arch/backtrace.h>
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static bool paniced = false;
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static bool step_backtrace(void *, void *ip) {
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printf("%p\n", ip);
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return true;
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}
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static void print_backtrace(context_t *context, void *) {
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arch_get_backtrace(context, step_backtrace, NULL);
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}
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__attribute__((noreturn)) void _panic(char *msg, context_t *ctx) {
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interrupt_set(false);
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if (arch_smp_cpusawake > 1)
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arch_smp_haltallothers();
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printf("cpu%lu: Oops.\n", current_cpu_id());
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if (msg)
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printf("%s\n", msg);
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if (ctx)
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PRINT_CTX(ctx);
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if (!paniced) {
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paniced = true;
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printf("backtrace:\n");
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if (ctx == NULL)
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arch_context_saveandcall(print_backtrace, NULL, NULL);
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else
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print_backtrace(ctx, NULL);
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} else {
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printf("!! DOUBLE PANIC !!\n");
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}
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for (;;);
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}
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