From ee97e7d3e576b653ef6694b7f3bcae9045620cca Mon Sep 17 00:00:00 2001 From: "Nicolas \"Pixel\" Noble" Date: Thu, 27 Jan 2011 02:01:44 +0100 Subject: Adding slightly better exception handlers. --- arch/arm/lpc17xx/handlers.c | 50 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 arch/arm/lpc17xx/handlers.c (limited to 'arch/arm/lpc17xx/handlers.c') diff --git a/arch/arm/lpc17xx/handlers.c b/arch/arm/lpc17xx/handlers.c new file mode 100644 index 0000000..444c0c1 --- /dev/null +++ b/arch/arm/lpc17xx/handlers.c @@ -0,0 +1,50 @@ +#include +#include "LPC17xx.h" + +enum FaultType { + NMI, HardFault, MemManage, BusFault, UsageFault, +}; + +static inline void traceme() { + unsigned int i; + void * frame, * pc; + + i = 0; + frame = __builtin_frame_address(i); + pc = frame ? __builtin_return_address(i) : 0; + DBGOUT("lv%u; PC = %p, frame = %p\r\n", i, pc, frame); +} + +static int general_Handler(enum FaultType fault) { + DBGOUT("***FAULT***\r\n"); + + traceme(); + + switch (fault) { + case NMI: + DBGOUT("NMI\r\n"); + break; + case HardFault: + DBGOUT("HardFault\r\nHFSR: %p\r\n", SCB->HFSR); + break; + case MemManage: + DBGOUT("MemManage\r\nCSFR: %p\r\nMMFAR: %p\r\n", SCB->CFSR, SCB->MMFAR); + break; + case BusFault: + DBGOUT("BusFault\r\nCFSR: %p\r\nBFAR: %p\r\n", SCB->CFSR, SCB->BFAR); + break; + case UsageFault: + DBGOUT("UsageFault\r\nCFSR: %p\r\nBFAR: %p\r\n", SCB->CFSR, SCB->BFAR); + break; + } + + while(1); + + return 0; +} + +int NMI_Handler() { return general_Handler(NMI); } +int HardFault_Handler() { return general_Handler(HardFault); } +int MemManage_Handler() { return general_Handler(MemManage); } +int BusFault_Handler() { return general_Handler(BusFault); } +int UsageFault_Handler() { return general_Handler(UsageFault); } -- cgit v1.2.3