#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>
DEFINE_SPINLOCK(pa_dbit_lock);
#endif
-int printbinary(char *buf, unsigned long x, int nbits)
+static void parisc_show_stack(struct task_struct *task, unsigned long *sp,
+ struct pt_regs *regs);
+
+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"
void show_regs(struct pt_regs *regs)
{
- int i;
+ int i, user;
char *level;
unsigned long cr30, cr31;
- level = user_mode(regs) ? KERN_DEBUG : KERN_CRIT;
+ user = user_mode(regs);
+ level = user ? KERN_DEBUG : KERN_CRIT;
print_gr(level, regs);
for (i = 0; i < 8; i += 4)
PRINTREGS(level, regs->sr, "sr", RFMT, i);
- if (user_mode(regs))
+ if (user)
print_fr(level, regs);
cr30 = mfctl(30);
printk("%s CPU: %8d CR30: " RFMT " CR31: " RFMT "\n",
level, current_thread_info()->cpu, cr30, cr31);
printk("%s ORIG_R28: " RFMT "\n", level, regs->orig_r28);
- printk(level);
- print_symbol(" IAOQ[0]: %s\n", regs->iaoq[0]);
- printk(level);
- print_symbol(" IAOQ[1]: %s\n", regs->iaoq[1]);
- printk(level);
- print_symbol(" RP(r2): %s\n", regs->gr[2]);
+
+ if (user) {
+ printk("%s IAOQ[0]: " RFMT "\n", level, regs->iaoq[0]);
+ printk("%s IAOQ[1]: " RFMT "\n", level, regs->iaoq[1]);
+ printk("%s RP(r2): " RFMT "\n", level, regs->gr[2]);
+ } else {
+ printk("%s IAOQ[0]: %pS\n", level, (void *) regs->iaoq[0]);
+ printk("%s IAOQ[1]: %pS\n", level, (void *) regs->iaoq[1]);
+ printk("%s RP(r2): %pS\n", level, (void *) regs->gr[2]);
+
+ parisc_show_stack(current, NULL, regs);
+ }
}
{
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);
-#ifdef CONFIG_KALLSYMS
- print_symbol("%s\n", info->ip);
-#else
- if ((i & 0x03) == 0)
- printk("\n");
-#endif
+ printk(KERN_CRIT " [<" RFMT ">] %pS\n",
+ info->ip, (void *) info->ip);
i++;
}
}
- printk("\n");
+ printk(KERN_CRIT "\n");
}
-void show_stack(struct task_struct *task, unsigned long *s)
+static void parisc_show_stack(struct task_struct *task, unsigned long *sp,
+ struct pt_regs *regs)
{
struct unwind_frame_info info;
+ struct task_struct *t;
- if (!task) {
+ t = task ? task : current;
+ if (regs) {
+ unwind_frame_init(&info, t, regs);
+ goto show_stack;
+ }
+
+ if (t == current) {
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);
+ unwind_frame_init_from_blocked_task(&info, t);
}
+show_stack:
do_show_stack(&info);
}
+void show_stack(struct task_struct *t, unsigned long *sp)
+{
+ return parisc_show_stack(t, sp, NULL);
+}
+
+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)) {
return; /* STFU */
printk(KERN_CRIT "%s (pid %d): %s (code %ld) at " RFMT "\n",
- current->comm, current->pid, str, err, regs->iaoq[0]);
+ current->comm, task_pid_nr(current), str, err, regs->iaoq[0]);
#ifdef PRINT_USER_FAULTS
/* XXX for debugging only */
show_regs(regs);
oops_in_progress = 1;
+ oops_enter();
+
/* 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"
+ " < Your System ate a SPARC! Gah! >\n"
+ " ------------------------------- \n"
+ " \\ ^__^\n"
+ " (__)\\ )\\/\\\n"
+ " U ||----w |\n"
+ " || ||\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);
+ if (err)
+ printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
+ current->comm, task_pid_nr(current), str, err);
+
+ /* Wot's wrong wif bein' racy? */
+ if (current->thread.flags & PARISC_KERNEL_DEATH) {
+ printk(KERN_CRIT "%s() recursion detected.\n", __func__);
+ local_irq_enable();
+ while (1);
+ }
+ current->thread.flags |= PARISC_KERNEL_DEATH;
+
show_regs(regs);
+ dump_stack();
+ add_taint(TAINT_DIE);
if (in_interrupt())
panic("Fatal exception in interrupt");
panic("Fatal exception");
}
- /* Wot's wrong wif bein' racy? */
- if (current->thread.flags & PARISC_KERNEL_DEATH) {
- printk(KERN_CRIT "%s() recursion detected.\n", __FUNCTION__);
- local_irq_enable();
- while (1);
- }
-
- current->thread.flags |= PARISC_KERNEL_DEATH;
+ oops_exit();
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, regs);
+ 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),
+ task_pid_nr(current), 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)
panic(msg);
}
-void handle_interruption(int code, struct pt_regs *regs)
+void notrace handle_interruption(int code, struct pt_regs *regs)
{
unsigned long fault_address = 0;
unsigned long fault_space = 0;
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;
/* Fall Through */
case 27:
/* Data memory protection ID trap */
+ if (code == 27 && !user_mode(regs) &&
+ fixup_exception(regs))
+ return;
+
die_if_kernel("Protection id trap", regs, code);
si.si_code = SEGV_MAPERR;
si.si_signo = SIGSEGV;
if (user_mode(regs)) {
#ifdef PRINT_USER_FAULTS
printk(KERN_DEBUG "\nhandle_interruption() pid=%d command='%s'\n",
- current->pid, current->comm);
+ task_pid_nr(current), current->comm);
show_regs(regs);
#endif
/* SIGBUS, for lack of a better one. */
else
printk(KERN_DEBUG "User Fault (long pointer) (fault %d) ",
code);
- printk("pid=%d command='%s'\n", current->pid, current->comm);
+ printk(KERN_CONT "pid=%d command='%s'\n",
+ task_pid_nr(current), current->comm);
show_regs(regs);
#endif
si.si_signo = SIGSEGV;
int __init check_ivt(void *iva)
{
+ extern u32 os_hpmc_size;
+ extern const u32 os_hpmc[];
+
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;
*ivap++ = 0;
/* Compute Checksum for HPMC handler */
-
- length = (u32)((unsigned long)os_hpmc_end - (unsigned long)os_hpmc);
+ length = os_hpmc_size;
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://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff