#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/timer.h>
+#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/console.h>
#include <linux/kallsyms.h>
+#include <linux/bug.h>
#include <asm/assembly.h>
#include <asm/system.h>
#include <asm/pdc.h>
#include <asm/pdc_chassis.h>
#include <asm/unwind.h>
+#include <asm/tlbflush.h>
+#include <asm/cacheflush.h>
#include "../math-emu/math-emu.h" /* for handle_fpe() */
DEFINE_SPINLOCK(pa_dbit_lock);
#endif
-int printbinary(char *buf, unsigned long x, int nbits)
+static int printbinary(char *buf, unsigned long x, int nbits)
{
unsigned long mask = 1UL << (nbits - 1);
while (mask != 0) {
return nbits;
}
-#ifdef __LP64__
+#ifdef CONFIG_64BIT
#define RFMT "%016lx"
#else
#define RFMT "%08lx"
{
int i = 1;
- printk("Backtrace:\n");
+ printk(KERN_CRIT "Backtrace:\n");
while (i <= 16) {
if (unwind_once(info) < 0 || info->ip == 0)
break;
if (__kernel_text_address(info->ip)) {
- printk(" [<" RFMT ">] ", info->ip);
+ printk("%s [<" RFMT ">] ", (i&0x3)==1 ? KERN_CRIT : "", info->ip);
#ifdef CONFIG_KALLSYMS
print_symbol("%s\n", info->ip);
#else
if (!task) {
unsigned long sp;
- struct pt_regs *r;
HERE:
asm volatile ("copy %%r30, %0" : "=r"(sp));
- r = kzalloc(sizeof(struct pt_regs), GFP_KERNEL);
- if (!r)
- return;
- r->iaoq[0] = (unsigned long)&&HERE;
- r->gr[2] = (unsigned long)__builtin_return_address(0);
- r->gr[30] = sp;
- unwind_frame_init(&info, current, r);
- kfree(r);
+ {
+ struct pt_regs r;
+
+ memset(&r, 0, sizeof(struct pt_regs));
+ r.iaoq[0] = (unsigned long)&&HERE;
+ r.gr[2] = (unsigned long)__builtin_return_address(0);
+ r.gr[30] = sp;
+
+ unwind_frame_init(&info, current, &r);
+ }
} else {
unwind_frame_init_from_blocked_task(&info, task);
}
do_show_stack(&info);
}
+int is_valid_bugaddr(unsigned long iaoq)
+{
+ return 1;
+}
+
void die_if_kernel(char *str, struct pt_regs *regs, long err)
{
if (user_mode(regs)) {
oops_in_progress = 1;
/* Amuse the user in a SPARC fashion */
- printk(
-" _______________________________ \n"
-" < Your System ate a SPARC! Gah! >\n"
-" ------------------------------- \n"
-" \\ ^__^\n"
-" \\ (xx)\\_______\n"
-" (__)\\ )\\/\\\n"
-" U ||----w |\n"
-" || ||\n");
+ if (err) printk(
+KERN_CRIT " _______________________________ \n"
+KERN_CRIT " < Your System ate a SPARC! Gah! >\n"
+KERN_CRIT " ------------------------------- \n"
+KERN_CRIT " \\ ^__^\n"
+KERN_CRIT " \\ (xx)\\_______\n"
+KERN_CRIT " (__)\\ )\\/\\\n"
+KERN_CRIT " U ||----w |\n"
+KERN_CRIT " || ||\n");
/* unlock the pdc lock if necessary */
pdc_emergency_unlock();
if (!console_drivers)
pdc_console_restart();
- printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
- current->comm, current->pid, str, err);
- show_regs(regs);
+ if (err)
+ printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
+ current->comm, current->pid, str, err);
/* Wot's wrong wif bein' racy? */
if (current->thread.flags & PARISC_KERNEL_DEATH) {
local_irq_enable();
while (1);
}
-
current->thread.flags |= PARISC_KERNEL_DEATH;
+
+ show_regs(regs);
+ dump_stack();
+
+ if (in_interrupt())
+ panic("Fatal exception in interrupt");
+
+ if (panic_on_oops) {
+ printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
+ ssleep(5);
+ panic("Fatal exception");
+ }
+
do_exit(SIGSEGV);
}
/* gdb uses break 4,8 */
#define GDB_BREAK_INSN 0x10004
-void handle_gdb_break(struct pt_regs *regs, int wot)
+static void handle_gdb_break(struct pt_regs *regs, int wot)
{
struct siginfo si;
- si.si_code = wot;
- si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
si.si_signo = SIGTRAP;
si.si_errno = 0;
+ si.si_code = wot;
+ si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
force_sig_info(SIGTRAP, &si, current);
}
-void handle_break(unsigned iir, struct pt_regs *regs)
+static void handle_break(struct pt_regs *regs)
{
- struct siginfo si;
-
- switch(iir) {
- case 0x00:
-#ifdef PRINT_USER_FAULTS
- printk(KERN_DEBUG "break 0,0: pid=%d command='%s'\n",
- current->pid, current->comm);
-#endif
- die_if_kernel("Breakpoint", regs, 0);
-#ifdef PRINT_USER_FAULTS
- show_regs(regs);
-#endif
- si.si_code = TRAP_BRKPT;
- si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
- si.si_signo = SIGTRAP;
- force_sig_info(SIGTRAP, &si, current);
- break;
-
- case GDB_BREAK_INSN:
- die_if_kernel("Breakpoint", regs, 0);
- handle_gdb_break(regs, TRAP_BRKPT);
- break;
+ unsigned iir = regs->iir;
+
+ if (unlikely(iir == PARISC_BUG_BREAK_INSN && !user_mode(regs))) {
+ /* check if a BUG() or WARN() trapped here. */
+ enum bug_trap_type tt;
+ tt = report_bug(regs->iaoq[0] & ~3);
+ if (tt == BUG_TRAP_TYPE_WARN) {
+ regs->iaoq[0] += 4;
+ regs->iaoq[1] += 4;
+ return; /* return to next instruction when WARN_ON(). */
+ }
+ die_if_kernel("Unknown kernel breakpoint", regs,
+ (tt == BUG_TRAP_TYPE_NONE) ? 9 : 0);
+ }
- default:
#ifdef PRINT_USER_FAULTS
- printk(KERN_DEBUG "break %#08x: pid=%d command='%s'\n",
- iir, current->pid, current->comm);
+ if (unlikely(iir != GDB_BREAK_INSN)) {
+ printk(KERN_DEBUG "break %d,%d: pid=%d command='%s'\n",
+ iir & 31, (iir>>13) & ((1<<13)-1),
+ current->pid, current->comm);
show_regs(regs);
-#endif
- si.si_signo = SIGTRAP;
- si.si_code = TRAP_BRKPT;
- si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
- force_sig_info(SIGTRAP, &si, current);
- return;
}
-}
-
+#endif
-int handle_toc(void)
-{
- printk(KERN_CRIT "TOC call.\n");
- return 0;
+ /* send standard GDB signal */
+ handle_gdb_break(regs, TRAP_BRKPT);
}
static void default_trap(int code, struct pt_regs *regs)
show_regs(regs);
}
-void (*cpu_lpmc) (int code, struct pt_regs *regs) = default_trap;
+void (*cpu_lpmc) (int code, struct pt_regs *regs) __read_mostly = default_trap;
void transfer_pim_to_trap_frame(struct pt_regs *regs)
/* Low-priority machine check */
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_LPMC);
- flush_all_caches();
+ flush_cache_all();
+ flush_tlb_all();
cpu_lpmc(5, regs);
return;
case 9:
/* Break instruction trap */
- handle_break(regs->iir,regs);
+ handle_break(regs);
return;
case 10:
case 13:
/* Conditional Trap
- The condition succees in an instruction which traps
+ The condition succeeds in an instruction which traps
on condition */
if(user_mode(regs)){
si.si_signo = SIGFPE;
int __init check_ivt(void *iva)
{
+ extern const u32 os_hpmc[];
+ extern const u32 os_hpmc_end[];
+
int i;
u32 check = 0;
u32 *ivap;
u32 *hpmcp;
u32 length;
- extern void os_hpmc(void);
- extern void os_hpmc_end(void);
if (strcmp((char *)iva, "cows can fly"))
return -1;
/* Compute Checksum for HPMC handler */
- length = (u32)((unsigned long)os_hpmc_end - (unsigned long)os_hpmc);
+ length = os_hpmc_end - os_hpmc;
ivap[7] = length;
hpmcp = (u32 *)os_hpmc;
return 0;
}
-#ifndef __LP64__
+#ifndef CONFIG_64BIT
extern const void fault_vector_11;
#endif
extern const void fault_vector_20;
if (boot_cpu_data.cpu_type >= pcxu)
iva = (void *) &fault_vector_20;
else
-#ifdef __LP64__
+#ifdef CONFIG_64BIT
panic("Can't boot 64-bit OS on PA1.1 processor!");
#else
iva = (void *) &fault_vector_11;
git.samba.org / sfrench / cifs-2.6.git / blobdiff