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-rw-r--r--c/src/librdbg/src/powerpc/excep_f.c233
1 files changed, 113 insertions, 120 deletions
diff --git a/c/src/librdbg/src/powerpc/excep_f.c b/c/src/librdbg/src/powerpc/excep_f.c
index 13adcd1e67..b821f39c1d 100644
--- a/c/src/librdbg/src/powerpc/excep_f.c
+++ b/c/src/librdbg/src/powerpc/excep_f.c
@@ -17,32 +17,35 @@
#include <rdbg/rdbg.h>
#include <rdbg/servrpc.h>
- int
-ExcepToSig (Exception_context *ctx)
+ int
+ExcepToSig (Exception_context * ctx)
{
int excep = getExcNum (ctx);
-
+
switch (excep) {
- case ASM_FLOAT_VECTOR : return SIGFPE;
-
- case ASM_TRACE_VECTOR :
- case ASM_PROG_VECTOR :
- case ASM_SYS_VECTOR : return SIGTRAP;
-
- case ASM_ISI_VECTOR : return SIGSEGV;
-
- case ASM_RESET_VECTOR :
- case ASM_MACH_VECTOR :
- case ASM_EXT_VECTOR :
- case ASM_ALIGN_VECTOR : return SIGILL;
-
- default:
- break;
- }
- return SIGKILL;
+ case ASM_FLOAT_VECTOR:
+ return SIGFPE;
+
+ case ASM_TRACE_VECTOR:
+ case ASM_PROG_VECTOR:
+ case ASM_SYS_VECTOR:
+ return SIGTRAP;
+
+ case ASM_ISI_VECTOR:
+ return SIGSEGV;
+
+ case ASM_RESET_VECTOR:
+ case ASM_MACH_VECTOR:
+ case ASM_EXT_VECTOR:
+ case ASM_ALIGN_VECTOR:
+ return SIGILL;
+
+ default:
+ break;
+ }
+ return SIGKILL;
}
-
/*----- Breakpoint Exception management -----*/
/*
@@ -51,134 +54,124 @@ ExcepToSig (Exception_context *ctx)
*/
void
-BreakPointExcHdl(CPU_Exception_frame *ctx)
+BreakPointExcHdl (CPU_Exception_frame * ctx)
{
rtems_status_code status;
rtems_id continueSemId;
- /* T. Straumann, 1/16/2002: we must re-enable the floating point engine
- * if the interrupted thread is FP. Otherwise,
- * the semaphore primitives may crash when they
- * try to save FP context while switching this
- * thread...
+ /*
+ * we must re-enable the floating point engine
+ * if the interrupted thread is FP. Otherwise,
+ * the semaphore primitives may crash when they
+ * try to save FP context while switching this
+ * thread... NB : deferred fp context switching
+ * would 1) avoid to have to save FP, make this code
+ * obsolete.
*/
- if (ctx->EXC_SRR1 & 0x2000) {
- register unsigned long msr;
- __asm__ __volatile__("mfmsr %0":"=r"(msr));
- __asm__ __volatile__("mtmsr %0"::"r"(msr|MSR_FP));
+ if (ctx->EXC_SRR1 & MSR_FP) {
+ register unsigned long msr;
+ __asm__ __volatile__ ("mfmsr %0":"=r" (msr));
+ __asm__ __volatile__ ("mtmsr %0"::"r" (msr | MSR_FP));
}
- if ( (justSaveContext) && (ctx->_EXC_number == ASM_SYS_VECTOR) ) {
+ if ((justSaveContext) && (ctx->_EXC_number == ASM_SYS_VECTOR)) {
PushSavedExceptCtx (_Thread_Executing->Object.id, ctx);
justSaveContext = 0;
- }
- else {
- if (ctx->_EXC_number != ASM_TRACE_VECTOR){
+ } else {
+ if (ctx->_EXC_number != ASM_TRACE_VECTOR) {
NbSerializedCtx++;
- rtems_semaphore_obtain(serializeSemId, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
+ rtems_semaphore_obtain (serializeSemId, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
NbSerializedCtx--;
}
-
+
currentTargetThread = _Thread_Executing->Object.id;
#ifdef DDEBUG
- printk("----------------------------------------------------------\n");
- printk("Exception %d caught at PC %x by thread %d\n",
- ctx->_EXC_number,
- ctx->EXC_SRR0,
- _Thread_Executing->Object.id);
- printk("----------------------------------------------------------\n");
- printk("Processor execution context at time of the fault was :\n");
- printk("----------------------------------------------------------\n");
- printk("\t R0 = %x\n", ctx->GPR0);
- printk("\t R1 = %x\n", ctx->GPR1);
- printk("\t R2 = %x\n", ctx->GPR2);
- printk("\t R3 = %x\n", ctx->GPR3);
- printk("\t R4 = %x\n", ctx->GPR4);
- printk("\t R5 = %x\n", ctx->GPR5);
- printk("\t R6 = %x\n", ctx->GPR6);
- printk("\t R7 = %x\n", ctx->GPR7);
- printk("\t R8 = %x\n", ctx->GPR8);
- printk("\t R9 = %x\n", ctx->GPR9);
- printk("\t R10 = %x\n", ctx->GPR10);
- printk("\t R11 = %x\n", ctx->GPR11);
- printk("\t R12 = %x\n", ctx->GPR12);
- printk("\t R13 = %x\n", ctx->GPR13);
- printk("\t R14 = %x\n", ctx->GPR14);
- printk("\t R15 = %x\n", ctx->GPR15);
- printk("\t R16 = %x\n", ctx->GPR16);
- printk("\t R17 = %x\n", ctx->GPR17);
- printk("\t R18 = %x\n", ctx->GPR18);
- printk("\t R19 = %x\n", ctx->GPR19);
- printk("\t R20 = %x\n", ctx->GPR20);
- printk("\t R21 = %x\n", ctx->GPR21);
- printk("\t R22 = %x\n", ctx->GPR22);
- printk("\t R23 = %x\n", ctx->GPR23);
- printk("\t R24 = %x\n", ctx->GPR24);
- printk("\t R25 = %x\n", ctx->GPR25);
- printk("\t R26 = %x\n", ctx->GPR26);
- printk("\t R27 = %x\n", ctx->GPR27);
- printk("\t R28 = %x\n", ctx->GPR28);
- printk("\t R29 = %x\n", ctx->GPR29);
- printk("\t R30 = %x\n", ctx->GPR30);
- printk("\t R31 = %x\n", ctx->GPR31);
- printk("\t CR = %x\n", ctx->EXC_CR);
- printk("\t CTR = %x\n", ctx->EXC_CTR);
- printk("\t XER = %x\n", ctx->EXC_XER);
- printk("\t LR = %x\n", ctx->EXC_LR);
- printk("\t MSR = %x\n", ctx->EXC_SRR1);
+ printk ("----------------------------------------------------------\n");
+ printk ("Exception %d caught at PC %x by thread %d\n",
+ ctx->_EXC_number, ctx->EXC_SRR0, _Thread_Executing->Object.id);
+ printk ("----------------------------------------------------------\n");
+ printk ("Processor execution context at time of the fault was :\n");
+ printk ("----------------------------------------------------------\n");
+ printk ("\t R0 = %x\n", ctx->GPR0);
+ printk ("\t R1 = %x\n", ctx->GPR1);
+ printk ("\t R2 = %x\n", ctx->GPR2);
+ printk ("\t R3 = %x\n", ctx->GPR3);
+ printk ("\t R4 = %x\n", ctx->GPR4);
+ printk ("\t R5 = %x\n", ctx->GPR5);
+ printk ("\t R6 = %x\n", ctx->GPR6);
+ printk ("\t R7 = %x\n", ctx->GPR7);
+ printk ("\t R8 = %x\n", ctx->GPR8);
+ printk ("\t R9 = %x\n", ctx->GPR9);
+ printk ("\t R10 = %x\n", ctx->GPR10);
+ printk ("\t R11 = %x\n", ctx->GPR11);
+ printk ("\t R12 = %x\n", ctx->GPR12);
+ printk ("\t R13 = %x\n", ctx->GPR13);
+ printk ("\t R14 = %x\n", ctx->GPR14);
+ printk ("\t R15 = %x\n", ctx->GPR15);
+ printk ("\t R16 = %x\n", ctx->GPR16);
+ printk ("\t R17 = %x\n", ctx->GPR17);
+ printk ("\t R18 = %x\n", ctx->GPR18);
+ printk ("\t R19 = %x\n", ctx->GPR19);
+ printk ("\t R20 = %x\n", ctx->GPR20);
+ printk ("\t R21 = %x\n", ctx->GPR21);
+ printk ("\t R22 = %x\n", ctx->GPR22);
+ printk ("\t R23 = %x\n", ctx->GPR23);
+ printk ("\t R24 = %x\n", ctx->GPR24);
+ printk ("\t R25 = %x\n", ctx->GPR25);
+ printk ("\t R26 = %x\n", ctx->GPR26);
+ printk ("\t R27 = %x\n", ctx->GPR27);
+ printk ("\t R28 = %x\n", ctx->GPR28);
+ printk ("\t R29 = %x\n", ctx->GPR29);
+ printk ("\t R30 = %x\n", ctx->GPR30);
+ printk ("\t R31 = %x\n", ctx->GPR31);
+ printk ("\t CR = %x\n", ctx->EXC_CR);
+ printk ("\t CTR = %x\n", ctx->EXC_CTR);
+ printk ("\t XER = %x\n", ctx->EXC_XER);
+ printk ("\t LR = %x\n", ctx->EXC_LR);
+ printk ("\t MSR = %x\n", ctx->EXC_SRR1);
#endif
- status = rtems_semaphore_create (rtems_build_name('D', 'B', 'G', 'c'),
- 0,
- RTEMS_FIFO |
- RTEMS_COUNTING_SEMAPHORE |
- RTEMS_NO_INHERIT_PRIORITY |
- RTEMS_NO_PRIORITY_CEILING |
- RTEMS_LOCAL,
- 0,
- &continueSemId);
+ status = rtems_semaphore_create (rtems_build_name ('D', 'B', 'G', 'c'),
+ 0,
+ RTEMS_FIFO |
+ RTEMS_COUNTING_SEMAPHORE |
+ RTEMS_NO_INHERIT_PRIORITY |
+ RTEMS_NO_PRIORITY_CEILING |
+ RTEMS_LOCAL, 0, &continueSemId);
if (status != RTEMS_SUCCESSFUL)
- rtems_panic ("Can't create continue semaphore: `%s'\n",rtems_status_text(status));
+ rtems_panic ("Can't create continue semaphore: `%s'\n",
+ rtems_status_text (status));
PushExceptCtx (_Thread_Executing->Object.id, continueSemId, ctx);
-
- switch (ctx->_EXC_number){
- case ASM_TRACE_VECTOR :
- DPRINTF((" TRACE EXCEPTION !!!\n"));
+
+ switch (ctx->_EXC_number) {
+ case ASM_TRACE_VECTOR:
+ DPRINTF ((" TRACE EXCEPTION !!!\n"));
ctx->EXC_SRR1 &= ~MSR_SE;
- ExitForSingleStep-- ;
- rtems_semaphore_release( wakeupEventSemId );
- break;
+ ExitForSingleStep--;
+ rtems_semaphore_release (wakeupEventSemId);
+ break;
- case ASM_PROG_VECTOR :
- DPRINTF((" BREAKPOINT EXCEPTION !!!\n"));
- rtems_semaphore_release( wakeupEventSemId );
- break;
+ case ASM_PROG_VECTOR:
+ DPRINTF ((" BREAKPOINT EXCEPTION !!!\n"));
+ rtems_semaphore_release (wakeupEventSemId);
+ break;
- case ASM_SYS_VECTOR :
- DPRINTF((" ENTER RDBG !!!\n"));
- rtems_semaphore_release( wakeupEventSemId );
+ case ASM_SYS_VECTOR:
+ DPRINTF ((" ENTER RDBG !!!\n"));
+ rtems_semaphore_release (wakeupEventSemId);
break;
default:
- DPRINTF((" OTHER EXCEPTION !!!\n"));
-#ifdef DDEBUG
- { extern void BSP_printStackTrace();
- BSP_printStackTrace(ctx);
- }
-#endif
- rtems_semaphore_release( wakeupEventSemId );
+ DPRINTF ((" OTHER EXCEPTION !!!\n"));
+ rtems_semaphore_release (wakeupEventSemId);
break;
}
- rtems_semaphore_obtain(continueSemId, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
-
+ rtems_semaphore_obtain (continueSemId, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
+
PopExceptCtx (_Thread_Executing->Object.id);
- rtems_semaphore_delete(continueSemId);
+ rtems_semaphore_delete (continueSemId);
}
-
}
-
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 12:44:37 +0000