fatal exception handler: Only dump "registers" from stack for fatal user exceptions
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c8c9e52be9
3 changed files with 13 additions and 6 deletions
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@ -23,7 +23,7 @@
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/* Forward declarations */
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static void IRAM fatal_handler_prelude(void);
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/* Inner parts of crash handlers marked noinline to ensure they don't inline into IRAM. */
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static void __attribute__((noinline)) __attribute__((noreturn)) fatal_exception_handler_inner(uint32_t *sp);
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static void __attribute__((noinline)) __attribute__((noreturn)) fatal_exception_handler_inner(uint32_t *sp, bool registers_saved_on_stack);
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static void __attribute__((noinline)) __attribute__((noreturn)) abort_handler_inner(uint32_t *caller, uint32_t *sp);
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/* fatal_exception_handler called from any unhandled user exception
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@ -34,9 +34,9 @@ static void __attribute__((noinline)) __attribute__((noreturn)) abort_handler_in
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* runs from flash after fatal_handler_prelude ensures it is mapped
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* safely.
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*/
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void IRAM __attribute__((noreturn)) fatal_exception_handler(uint32_t *sp) {
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void IRAM __attribute__((noreturn)) fatal_exception_handler(uint32_t *sp, bool registers_saved_on_stack) {
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fatal_handler_prelude();
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fatal_exception_handler_inner(sp);
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fatal_exception_handler_inner(sp, registers_saved_on_stack);
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}
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/* Abort implementation
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@ -148,10 +148,12 @@ static void IRAM fatal_handler_prelude(void) {
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/* Main part of fatal exception handler, is run from flash to save
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some IRAM.
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*/
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static void fatal_exception_handler_inner(uint32_t *sp) {
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static void fatal_exception_handler_inner(uint32_t *sp, bool registers_saved_on_stack) {
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dump_excinfo();
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if (sp) {
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dump_registers_in_exception_handler(sp);
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if (registers_saved_on_stack) {
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dump_registers_in_exception_handler(sp);
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}
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dump_stack(sp);
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}
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uart_flush_txfifo(0);
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@ -69,6 +69,7 @@ DebugExceptionVector:
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wsr a0, excsave2
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mov a2, a1
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movi a3, 0
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call0 fatal_exception_handler
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rfi 2
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@ -83,6 +84,7 @@ KernelExceptionVector:
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break 1, 0
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mov a2, a1
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movi a3, 0
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call0 fatal_exception_handler
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rfe
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@ -101,6 +103,7 @@ DoubleExceptionVector:
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break 1, 4
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mov a2, a1
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movi a3, 0
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call0 fatal_exception_handler
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/* Reset vector at offset 0x80 is unused, as vecbase gets reset to mask ROM
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@ -259,6 +262,7 @@ LoadStoreErrorHandler:
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l32i a4, sp, 0x10
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rsr a1, excsave1
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mov a2, a1
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movi a3, 0
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call0 fatal_exception_handler
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.balign 4
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@ -520,6 +524,7 @@ UserExceptionHandler:
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.LUserFailOtherExceptionCause:
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break 1, 1
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addi a2, a1, 0x50 /* UserExceptionHandler pushes stack down 0x50 */
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movi a3, 1
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call0 fatal_exception_handler
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/* _xt_user_exit is pushed onto the stack as part of the user exception handler,
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@ -17,6 +17,6 @@ void dump_stack(uint32_t *sp);
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Probably not useful to be called in other contexts.
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*/
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void __attribute__((noreturn)) fatal_exception_handler(uint32_t *sp);
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void __attribute__((noreturn)) fatal_exception_handler(uint32_t *sp, bool registers_saved_on_stack);
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#endif
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