diff options
| -rw-r--r-- | src/arch/arm64/armv8/exception.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/arch/arm64/armv8/exception.c b/src/arch/arm64/armv8/exception.c index 15d7e38398..8583fd5172 100644 --- a/src/arch/arm64/armv8/exception.c +++ b/src/arch/arm64/armv8/exception.c @@ -101,10 +101,21 @@ enum cb_err exception_handler_unregister(uint64_t vid, struct exception_handler static void print_exception_info(struct exc_state *state, uint64_t idx) { - /* Poor man's sign of life in case printk() is shot. */ + /* + * Sign of life in case printk() is shot. Prints !EXCEPT! to UART + * Not using a loop but instead calling __uart_tx_byte separately is intentionally here + * because in rare cases it will not print if it needs to access memory addresses + */ __uart_tx_byte('\r'); __uart_tx_byte('\n'); __uart_tx_byte('!'); + __uart_tx_byte('E'); + __uart_tx_byte('X'); + __uart_tx_byte('C'); + __uart_tx_byte('E'); + __uart_tx_byte('P'); + __uart_tx_byte('T'); + __uart_tx_byte('!'); printk(BIOS_DEBUG, "\nexception %s\n", idx < NUM_EXC_VIDS ? exception_names[idx] : "_unknown"); |