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Added extra diagnostic information that can be printed when the ARM700

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prefetch abort bug occurs.
Fixed -Wall compiler warnings.
This commit is contained in:
mark 1996-06-03 21:32:11 +00:00
parent ff542922fa
commit 6ecba1cbe0
1 changed files with 30 additions and 2 deletions
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32
sys/arch/arm32/arm32/syscall.c
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@ -1,4 +1,4 @@
/* $NetBSD: syscall.c,v 1.5 1996/03/13 21:21:00 mark Exp $ */
/* $NetBSD: syscall.c,v 1.6 1996/06/03 21:32:11 mark Exp $ */
/*
* Copyright (c) 1994,1995 Mark Brinicombe.
@ -73,6 +73,7 @@
#include <machine/frame.h>
#include <machine/katelib.h>
#include <machine/undefined.h>
#include <machine/irqhandler.h>
#include "hydrabus.h"
@ -103,6 +104,16 @@ extern pv_addr_t hydrascratch;
void postmortem __P((trapframe_t *));
void fpe_dump_prof __P(());
extern int vmem_mapdram __P((void));
extern int vmem_mapvram __P((void));
extern int vmem_cachectl __P((int flag));
extern void pmap_dump_pvs __P((void));
extern int pmap_page_attributes __P((vm_offset_t va));
extern void pmap_pagedir_dump __P((void));
extern void pmap_debug __P((int level));
extern u_int disassemble __P((u_int addr));
extern void debug_show_all_procs __P((int argc, char *argv[]));
#define SYSCALL_SPECIAL_RETURN \
userret(p, frame->tf_pc, sticks); \
validate_trapframe(frame, 4); \
@ -170,6 +181,21 @@ syscall(frame, code)
*/
if ((ReadWord(frame->tf_pc - 4) & 0x0f000000) != 0x0f000000) {
#ifdef ARM700BUGTRACK
int loop;
printf("ARM700 just stumbled at 0x%08x\n", frame->tf_pc - 4);
printf("Code leading up to this was\n");
for (loop = frame->tf_pc - 32; loop < frame->tf_pc; loop += 4)
disassemble(loop);
dumpframe(frame);
printf("CPU ID=%08x\n", cpu_id());
printf("MMU Fault address=%08x status=%08x\n", cpu_faultaddress(), cpu_faultstatus());
printf("Page table entry for 0x%08x at 0x%08x = 0x%08x\n", frame->tf_pc - 4, vtopte(frame->tf_pc - 4),
*vtopte(frame->tf_pc - 4));
#endif
frame->tf_pc -= 4;
++arm700bugcount;
@ -242,7 +268,7 @@ syscall(frame, code)
case 0x1008:
switch (frame->tf_r0) {
case 0 :
debug_show_all_procs(frame->tf_r1, frame->tf_r2);
debug_show_all_procs(frame->tf_r1, (char **)frame->tf_r2);
break;
#ifdef FPE
case 4 :
@ -414,6 +440,7 @@ syscall(frame, code)
SYSCALL_SPECIAL_RETURN;
break;
#ifdef RC7500
case 0x102b:
frame->tf_r0 = vmem_mapdram();
SYSCALL_SPECIAL_RETURN;
@ -428,6 +455,7 @@ syscall(frame, code)
frame->tf_r0 = vmem_cachectl(frame->tf_r0);
SYSCALL_SPECIAL_RETURN;
break;
#endif /* RC7500 */
case SYS_syscall:
/* code = fuword(params);*/