summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c
diff options
context:
space:
mode:
Diffstat (limited to 'c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c')
-rw-r--r--c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c197
1 files changed, 4 insertions, 193 deletions
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c
index b7d4299c22..255e401175 100644
--- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c
+++ b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_global_handler.c
@@ -19,201 +19,12 @@
#include <bsp/vectors.h>
-#ifndef __SPE__
- #define GET_GPR(gpr) (gpr)
-#else
- #define GET_GPR(gpr) ((int) ((gpr) >> 32))
-#endif
-
exception_handler_t globalExceptHdl = C_exception_handler;
-/* T. Straumann: provide a stack trace
- * <strauman@slac.stanford.edu>, 6/26/2001
- */
-typedef struct LRFrameRec_ {
- struct LRFrameRec_ *frameLink;
- unsigned long *lr;
-} LRFrameRec, *LRFrame;
-
-#define STACK_CLAMP 50 /* in case we have a corrupted bottom */
-
-static uint32_t ppc_exc_get_DAR_dflt(void)
-{
- if (ppc_cpu_is_60x())
- return PPC_SPECIAL_PURPOSE_REGISTER(PPC_DAR);
- else
- switch (ppc_cpu_is_bookE()) {
- default:
- break;
- case PPC_BOOKE_STD:
- case PPC_BOOKE_E500:
- return PPC_SPECIAL_PURPOSE_REGISTER(DEAR_BOOKE);
- case PPC_BOOKE_405:
- return PPC_SPECIAL_PURPOSE_REGISTER(DEAR_405);
- }
- return 0xdeadbeef;
-}
-
-uint32_t (*ppc_exc_get_DAR)(void) = ppc_exc_get_DAR_dflt;
-
-void BSP_printStackTrace(BSP_Exception_frame *excPtr)
-{
- LRFrame f;
- int i;
- LRFrame sp;
- void *lr;
-
- printk("Stack Trace: \n ");
- if (excPtr) {
- printk("IP: 0x%08x, ", excPtr->EXC_SRR0);
- sp = (LRFrame) GET_GPR(excPtr->GPR1);
- lr = (void *) excPtr->EXC_LR;
- } else {
- /* there's no macro for this */
- __asm__ __volatile__("mr %0, 1":"=r"(sp));
- lr = (LRFrame) ppc_link_register();
- }
- printk("LR: 0x%08x\n", lr);
- for (f = (LRFrame) sp, i = 0; f->frameLink && i < STACK_CLAMP; f = f->frameLink) {
- printk("--^ 0x%08x", (long) (f->frameLink->lr));
- if (!(++i % 5))
- printk("\n");
- }
- if (i >= STACK_CLAMP) {
- printk("Too many stack frames (stack possibly corrupted), giving up...\n");
- } else {
- if (i % 5)
- printk("\n");
- }
-}
-
void C_exception_handler(BSP_Exception_frame *excPtr)
{
- static int nest = 0;
-
- int recoverable = 0;
- rtems_id id = 0;
- int synch;
- unsigned n;
- rtems_status_code sc;
-
- /* Catch recursion */
- nest++;
-
- if (nest > 2) {
- /* maybe printk() or dereferencing excPtr caused an exception;
- * die silently...
- */
- while (1);
- }
-
- synch = (int) excPtr->_EXC_number >= 0;
- n = excPtr->_EXC_number & 0x7fff;
-
- printk("Exception handler called for exception %d (0x%x)\n", n, n);
- printk("\t Next PC or Address of fault = %08x\n", excPtr->EXC_SRR0);
- printk("\t Saved MSR = %08x\n", excPtr->EXC_SRR1);
-
- if (nest > 1) {
- printk("Recursion in the exception handler detected; I'll spin now...\n");
- while (1);
- }
-
- /* Try to find out more about the context where this happened */
- printk("\t Context: ");
- if (rtems_interrupt_is_in_progress()) {
- printk("ISR");
- } else if (!_Thread_Executing) {
- printk("Initialization (_Thread_Executing not available yet)");
- } else {
- if (RTEMS_SUCCESSFUL != (sc = rtems_task_ident(RTEMS_SELF, RTEMS_LOCAL, &id))) {
- printk("Unable to determine faulting task; rtems_task_ident() returned %u", sc);
- id = 0;
- } else {
- printk("Task ID 0x%08x", id);
- }
- }
- printk("\n");
-
- /* Dump registers */
-
- printk("\t R0 = %08x", GET_GPR(excPtr->GPR0));
- if (synch) {
- printk(" R1 = %08x", GET_GPR(excPtr->GPR1));
- printk(" R2 = %08x", GET_GPR(excPtr->GPR2));
- } else {
- printk(" ");
- printk(" ");
- }
- printk(" R3 = %08x\n", GET_GPR(excPtr->GPR3));
- printk("\t R4 = %08x", GET_GPR(excPtr->GPR4));
- printk(" R5 = %08x", GET_GPR(excPtr->GPR5));
- printk(" R6 = %08x", GET_GPR(excPtr->GPR6));
- printk(" R7 = %08x\n", GET_GPR(excPtr->GPR7));
- printk("\t R8 = %08x", GET_GPR(excPtr->GPR8));
- printk(" R9 = %08x", GET_GPR(excPtr->GPR9));
- printk(" R10 = %08x", GET_GPR(excPtr->GPR10));
- printk(" R11 = %08x\n", GET_GPR(excPtr->GPR11));
- printk("\t R12 = %08x", GET_GPR(excPtr->GPR12));
- if (synch) {
- printk(" R13 = %08x", GET_GPR(excPtr->GPR13));
- printk(" R14 = %08x", GET_GPR(excPtr->GPR14));
- printk(" R15 = %08x\n", GET_GPR(excPtr->GPR15));
- printk("\t R16 = %08x", GET_GPR(excPtr->GPR16));
- printk(" R17 = %08x", GET_GPR(excPtr->GPR17));
- printk(" R18 = %08x", GET_GPR(excPtr->GPR18));
- printk(" R19 = %08x\n", GET_GPR(excPtr->GPR19));
- printk("\t R20 = %08x", GET_GPR(excPtr->GPR20));
- printk(" R21 = %08x", GET_GPR(excPtr->GPR21));
- printk(" R22 = %08x", GET_GPR(excPtr->GPR22));
- printk(" R23 = %08x\n", GET_GPR(excPtr->GPR23));
- printk("\t R24 = %08x", GET_GPR(excPtr->GPR24));
- printk(" R25 = %08x", GET_GPR(excPtr->GPR25));
- printk(" R26 = %08x", GET_GPR(excPtr->GPR26));
- printk(" R27 = %08x\n", GET_GPR(excPtr->GPR27));
- printk("\t R28 = %08x", GET_GPR(excPtr->GPR28));
- printk(" R29 = %08x", GET_GPR(excPtr->GPR29));
- printk(" R30 = %08x", GET_GPR(excPtr->GPR30));
- printk(" R31 = %08x\n", GET_GPR(excPtr->GPR31));
- } else {
- printk("\n");
- }
- printk("\t CR = %08x\n", excPtr->EXC_CR);
- printk("\t CTR = %08x\n", excPtr->EXC_CTR);
- printk("\t XER = %08x\n", excPtr->EXC_XER);
- printk("\t LR = %08x\n", excPtr->EXC_LR);
-
- /* Would be great to print DAR but unfortunately,
- * that is not portable across different CPUs.
- * AFAIK on classic PPC DAR is SPR 19, on the
- * 405 we have DEAR = SPR 0x3d5 and booE says
- * DEAR = SPR 61 :-(
- */
- if (ppc_exc_get_DAR) {
- printk("\t DAR = %08x\n", ppc_exc_get_DAR());
- }
-
- BSP_printStackTrace(excPtr);
-
- if (excPtr->_EXC_number == ASM_DEC_VECTOR)
- recoverable = 1;
- if (excPtr->_EXC_number == ASM_SYS_VECTOR)
-#ifdef TEST_RAW_EXCEPTION_CODE
- recoverable = 1;
-#else
- recoverable = 0;
-#endif
- if (!recoverable) {
- if (id) {
- printk("Suspending faulting task (0x%08x)\n", id);
- /* Unnest here because rtems_task_suspend() never returns */
- nest--;
- rtems_task_suspend(id);
- } else {
- printk("unrecoverable exception!!! Push reset button\n");
- while (1);
- }
- } else {
- nest--;
- }
+ rtems_fatal(
+ RTEMS_FATAL_SOURCE_POWERPC_EXCEPTION,
+ (rtems_fatal_code) excPtr
+ );
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 14:53:26 +0000