* from on to another using kdb_on! #cpu or cpu #cpu
*/
-decl_simple_lock_data(, debugger_lock) /* debugger lock */
-decl_simple_lock_data(, pbtlock) /* backtrace print lock */
+hw_lock_data_t debugger_lock; /* debugger lock */
+hw_lock_data_t pbtlock; /* backtrace print lock */
int debugger_cpu = -1; /* current cpu running debugger */
int debugger_debug = 0; /* Debug debugger */
"Corrupt stack", /* failStack */
"Corrupt mapping tables", /* failMapping */
"Corrupt context", /* failContext */
- "Unknown failure code" /* Unknown failure code - must always be last */
+ "No saveareas", /* failNoSavearea */
+ "Savearea corruption", /* failSaveareaCorr */
+ "Invalid live context", /* failBadLiveContext */
+ "Unknown failure code" /* Unknown failure code - must always be last */
};
char *invxcption = "Unknown code";
extern vm_offset_t mem_actual;
#if !MACH_KDB
-void kdb_trap(int type, struct ppc_saved_state *regs);
-void kdb_trap(int type, struct ppc_saved_state *regs) {
+void kdb_trap(int type, struct savearea *regs);
+void kdb_trap(int type, struct savearea *regs) {
return;
}
#endif
#if !MACH_KDP
-void kdp_trap(int type, struct ppc_saved_state *regs);
-void kdp_trap(int type, struct ppc_saved_state *regs) {
+void kdp_trap(int type, struct savearea *regs);
+void kdp_trap(int type, struct savearea *regs) {
return;
}
#endif
if (boot_arg & DB_HALT) halt_in_debugger=1;
if (boot_arg & DB_PRT) disableDebugOuput=FALSE;
if (boot_arg & DB_SLOG) systemLogDiags=TRUE;
+ if (boot_arg & DB_NMI) panicDebugging=TRUE;
+ if (boot_arg & DB_LOG_PI_SCRN) logPanicDataToScreen=TRUE;
}
hw_lock_init(&debugger_lock); /* initialize debugger lock */
default_preemption_rate = boot_arg;
}
- if (PE_parse_boot_arg("kpreempt", &boot_arg)) {
- extern int kernel_preemption_mode;
- extern boolean_t zone_gc_allowed;
-
- kernel_preemption_mode = boot_arg;
- zone_gc_allowed = FALSE; /* XXX: TO BE REMOVED */
- }
if (PE_parse_boot_arg("unsafe", &boot_arg)) {
extern int max_unsafe_quanta;
void
-print_backtrace(struct ppc_saved_state *ssp)
+print_backtrace(struct savearea *ssp)
{
unsigned int stackptr, *raddr, *rstack, trans, fence;
int i, frames_cnt, skip_top_frames, frames_max;
if(sv) fence = sv->save_r1; /* Stop at previous exception point */
if(!svssp) { /* Should we start from stack? */
- printf("Latest stack backtrace for cpu %d:\n", cpu_number());
+ kdb_printf("Latest stack backtrace for cpu %d:\n", cpu_number());
__asm__ volatile("mr %0,r1" : "=r" (stackptr)); /* Get current stack */
dump_backtrace(stackptr, fence); /* Dump the backtrace */
if(!sv) { /* Leave if no saveareas */
- printf("\nKernel version:\n%s\n",version); /* Print kernel version */
+ kdb_printf("\nKernel version:\n%s\n",version); /* Print kernel version */
hw_lock_unlock(&pbtlock); /* Allow another back trace to happen */
return;
}
}
else { /* Were we passed an exception? */
fence = 0xFFFFFFFF; /* Show we go all the way */
- if(svssp->save_prev) fence = svssp->save_prev->save_r1; /* Stop at previous exception point */
+ if(svssp->save_hdr.save_prev) {
+ if((svssp->save_hdr.save_prev <= VM_MAX_KERNEL_ADDRESS) && ((unsigned int)LRA(PPC_SID_KERNEL, (void *)svssp->save_hdr.save_prev))) { /* Valid address? */
+ fence = svssp->save_hdr.save_prev->save_r1; /* Stop at previous exception point */
+ }
+ }
- printf("Latest crash info for cpu %d:\n", cpu_number());
- printf(" Exception state (sv=0x%08x)\n", sv);
+ kdb_printf("Latest crash info for cpu %d:\n", cpu_number());
+ kdb_printf(" Exception state (sv=0x%08X)\n", sv);
dump_savearea(svssp, fence); /* Dump this savearea */
}
if(!sv) { /* Leave if no saveareas */
- printf("\nKernel version:\n%s\n",version); /* Print kernel version */
+ kdb_printf("\nKernel version:\n%s\n",version); /* Print kernel version */
hw_lock_unlock(&pbtlock); /* Allow another back trace to happen */
return;
}
- printf("Proceeding back via exception chain:\n");
+ kdb_printf("Proceeding back via exception chain:\n");
while(sv) { /* Do them all... */
- printf(" Exception state (sv=0x%08x)\n", sv);
+ if(!((sv <= VM_MAX_KERNEL_ADDRESS) && (unsigned int)LRA(PPC_SID_KERNEL, (void *)sv))) { /* Valid address? */
+ kdb_printf(" Exception state (sv=0x%08X) Not mapped or invalid. stopping...\n", sv);
+ break;
+ }
+
+ kdb_printf(" Exception state (sv=0x%08X)\n", sv);
if(sv == svssp) { /* Did we dump it already? */
- printf(" previously dumped as \"Latest\" state. skipping...\n");
+ kdb_printf(" previously dumped as \"Latest\" state. skipping...\n");
}
else {
fence = 0xFFFFFFFF; /* Show we go all the way */
- if(sv->save_prev) fence = sv->save_prev->save_r1; /* Stop at previous exception point */
+ if(sv->save_hdr.save_prev) {
+ if((sv->save_hdr.save_prev <= VM_MAX_KERNEL_ADDRESS) && ((unsigned int)LRA(PPC_SID_KERNEL, (void *)sv->save_hdr.save_prev))) { /* Valid address? */
+ fence = sv->save_hdr.save_prev->save_r1; /* Stop at previous exception point */
+ }
+ }
dump_savearea(sv, fence); /* Dump this savearea */
}
- sv = sv->save_prev; /* Back chain */
+ sv = sv->save_hdr.save_prev; /* Back chain */
}
- printf("\nKernel version:\n%s\n",version); /* Print kernel version */
+ kdb_printf("\nKernel version:\n%s\n",version); /* Print kernel version */
pbtcpu = -1; /* Mark as unowned */
hw_lock_unlock(&pbtlock); /* Allow another back trace to happen */
if(sv->save_exception > T_MAX) xcode = invxcption; /* Too big for table */
else xcode = trap_type[sv->save_exception / 4]; /* Point to the type */
- printf(" PC=0x%08X; MSR=0x%08x; DAR=0x%08x; DSISR=0x%08x; LR=0x%08x; R1=0x%08x; XCP=0x%08x (%s)\n",
+ kdb_printf(" PC=0x%08X; MSR=0x%08X; DAR=0x%08X; DSISR=0x%08X; LR=0x%08X; R1=0x%08X; XCP=0x%08X (%s)\n",
sv->save_srr0, sv->save_srr1, sv->save_dar, sv->save_dsisr,
sv->save_lr, sv->save_r1, sv->save_exception, xcode);
unsigned int sframe[8], raddr, dumbo;
int i;
- printf(" Backtrace:\n");
+ kdb_printf(" Backtrace:\n");
for(i = 0; i < DUMPFRAMES; i++) { /* Dump up to max frames */
if(!stackptr || (stackptr == fence)) break; /* Hit stop point or end... */
if(stackptr & 0x0000000f) { /* Is stack pointer valid? */
- printf("\n backtrace terminated - unaligned frame address: 0x%08x\n", stackptr); /* No, tell 'em */
+ kdb_printf("\n backtrace terminated - unaligned frame address: 0x%08X\n", stackptr); /* No, tell 'em */
break;
}
raddr = (unsigned int)LRA(PPC_SID_KERNEL, (void *)stackptr); /* Get physical frame address */
- if(!raddr) { /* Is it mapped? */
- printf("\n backtrace terminated - frame not mapped: 0x%08x\n", stackptr); /* No, tell 'em */
+ if(!raddr || (stackptr > VM_MAX_KERNEL_ADDRESS)) { /* Is it mapped? */
+ kdb_printf("\n backtrace terminated - frame not mapped or invalid: 0x%08X\n", stackptr); /* No, tell 'em */
break;
}
- if(raddr >= mem_actual) { /* Is it within physical RAM? */
- printf("\n backtrace terminated - frame outside of RAM: v=0x%08x, p=%08X\n", stackptr, raddr); /* No, tell 'em */
+ if(raddr >= mem_actual) { /* Is it within physical RAM? */
+ kdb_printf("\n backtrace terminated - frame outside of RAM: v=0x%08X, p=%08X\n", stackptr, raddr); /* No, tell 'em */
break;
}
- ReadReal(raddr, &sframe[0]); /* Fetch the stack frame */
+ ReadReal(raddr, &sframe[0]); /* Fetch the stack frame */
- bframes[i] = sframe[LRindex]; /* Save the link register */
+ bframes[i] = sframe[LRindex]; /* Save the link register */
- if(!i) printf(" "); /* Indent first time */
- else if(!(i & 7)) printf("\n "); /* Skip to new line every 8 */
- printf("0x%08x ", bframes[i]); /* Dump the link register */
+ if(!i) kdb_printf(" "); /* Indent first time */
+ else if(!(i & 7)) kdb_printf("\n "); /* Skip to new line every 8 */
+ kdb_printf("0x%08X ", bframes[i]); /* Dump the link register */
- stackptr = sframe[0]; /* Chain back */
+ stackptr = sframe[0]; /* Chain back */
}
- printf("\n");
- if(i >= DUMPFRAMES) printf(" backtrace continues...\n"); /* Say we terminated early */
+ kdb_printf("\n");
+ if(i >= DUMPFRAMES) kdb_printf(" backtrace continues...\n"); /* Say we terminated early */
if(i) kmod_dump((vm_offset_t *)&bframes[0], i); /* Show what kmods are in trace */
}
int i;
unsigned int store[8];
+ unsigned long pi_size = 0;
spl_t spl;
spl = splhigh(); /* No interruptions from here on */
return; /* Yeah, don't do it again... */
}
+
+/*
+ * The above stuff catches the double panic case so we shouldn't have to worry about that here.
+ */
+ if ( panicstr != (char *)0 )
+ {
+ /* diable kernel preemptions */
+ disable_preemption();
+
+ /* everything should be printed now so copy to NVRAM
+ */
+ if( debug_buf_size > 0)
+ pi_size = PESavePanicInfo( debug_buf, debug_buf_ptr - debug_buf);
+
+ if( !panicDebugging && (pi_size != 0) ) {
+ int my_cpu, debugger_cpu;
+ int tcpu;
+
+ my_cpu = cpu_number();
+ debugger_cpu = my_cpu;
+
+ hw_atomic_add(&debug_mode, 1);
+ debugger_active[my_cpu]++;
+ lock_debugger();
+
+ for(tcpu = 0; tcpu < NCPUS; tcpu++) {
+ if(tcpu == my_cpu) continue;
+ hw_atomic_add(&debugger_sync, 1);
+ (void)cpu_signal(tcpu, SIGPdebug, 0 ,0);
+ }
+ (void)hw_cpu_sync(&debugger_sync, LockTimeOut);
+ debugger_sync = 0;
+ }
+
+ draw_panic_dialog();
+
+ if( !panicDebugging && (pi_size != 0))
+ PEHaltRestart( kPEHangCPU );
+
+ enable_preemption();
+ }
+
+
if ((current_debugger != NO_CUR_DB)) { /* If there is a debugger configured, enter it */
printf("Debugger(%s)\n", message);
TRAP_DEBUGGER;
}
printf("\nNo debugger configured - dumping debug information\n");
- mfdbatu(store[0],0);
- mfdbatl(store[1],0);
- mfdbatu(store[2],1);
- mfdbatl(store[3],1);
- mfdbatu(store[4],2);
- mfdbatl(store[5],2);
- mfdbatu(store[6],3);
- mfdbatl(store[7],3);
- printf("DBAT0: %08X %08X\n", store[0], store[1]);
- printf("DBAT1: %08X %08X\n", store[2], store[3]);
- printf("DBAT2: %08X %08X\n", store[4], store[5]);
- printf("DBAT3: %08X %08X\n", store[6], store[7]);
printf("MSR=%08X\n",mfmsr());
print_backtrace(NULL);
splx(spl);
if(failcode > failUnknown) failcode = failUnknown; /* Set unknown code code */
kprintf("System Failure: cpu=%d; code=%08X (%s)\n", cpu_number(), sv->save_r3, failNames[failcode]);
- printf("System Failure: cpu=%d; code=%08X (%s)\n", cpu_number(), sv->save_r3, failNames[failcode]);
+ kdb_printf("System Failure: cpu=%d; code=%08X (%s)\n", cpu_number(), sv->save_r3, failNames[failcode]);
- print_backtrace((struct ppc_saved_state *)sv); /* Attempt to print backtrace */
+ print_backtrace(sv); /* Attempt to print backtrace */
Call_DebuggerC(type, sv); /* Attempt to get into debugger */
if ((current_debugger != NO_CUR_DB)) Call_DebuggerC(type, sv); /* Attempt to get into debugger */
int Call_DebuggerC(
int type,
- struct ppc_saved_state *saved_state)
+ struct savearea *saved_state)
{
int directcall, wait;
vm_offset_t instr_ptr;
kprintf("Call_DebuggerC(%d): %08X %08X, debact = %d\n", my_cpu, type, saved_state, debug_mode); /* (TEST/DEBUG) */
#endif
printf("Call_Debugger: enter - cpu %d, is_slave %d, debugger_cpu %d, pc %08X\n",
- my_cpu, debugger_is_slave[my_cpu], debugger_cpu, saved_state->srr0);
+ my_cpu, debugger_is_slave[my_cpu], debugger_cpu, saved_state->save_srr0);
}
- if (instr_ptr = (vm_offset_t)LRA(PPC_SID_KERNEL, (void *)(saved_state->srr0))) {
+ if (instr_ptr = (vm_offset_t)LRA(PPC_SID_KERNEL, (void *)(saved_state->save_srr0))) {
instr = ml_phys_read(instr_ptr); /* Get the trap that caused entry */
}
else instr = 0;
switch_debugger = 0; /* Make sure switch request is off */
directcall = 1; /* Assume direct call */
- if (saved_state->srr1 & MASK(SRR1_PRG_TRAP)) { /* Trap instruction? */
+ if (saved_state->save_srr1 & MASK(SRR1_PRG_TRAP)) { /* Trap instruction? */
directcall = 0; /* We had a trap not a direct call */
instr, my_cpu, debugger_cpu, db_run_mode); /* (TEST/DEBUG) */
#endif
if ((instr == TRAP_DEBUGGER_INST) || /* Did we trap to enter debugger? */
- (instr == TRAP_DIRECT_INST)) saved_state->srr0 += TRAP_INST_SIZE; /* Yes, point past trap */
+ (instr == TRAP_DIRECT_INST)) saved_state->save_srr0 += TRAP_INST_SIZE; /* Yes, point past trap */
if(debugger_cpu == my_cpu) LLTraceSet(lastTrace); /* Enable tracing on the way out if we are debugger */
projects / apple / xnu.git / blobdiff