620 lines
16 KiB
C
620 lines
16 KiB
C
/* MN10300 Exception handling
|
|
*
|
|
* Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Modified by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/smp_lock.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kallsyms.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kdebug.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/irq.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/system.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/io.h>
|
|
#include <asm/atomic.h>
|
|
#include <asm/smp.h>
|
|
#include <asm/pgalloc.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/cpu-regs.h>
|
|
#include <asm/busctl-regs.h>
|
|
#include <asm/unit/leds.h>
|
|
#include <asm/fpu.h>
|
|
#include <asm/gdb-stub.h>
|
|
#include <asm/sections.h>
|
|
|
|
#if (CONFIG_INTERRUPT_VECTOR_BASE & 0xffffff)
|
|
#error "INTERRUPT_VECTOR_BASE not aligned to 16MiB boundary!"
|
|
#endif
|
|
|
|
struct pt_regs *__frame; /* current frame pointer */
|
|
EXPORT_SYMBOL(__frame);
|
|
|
|
int kstack_depth_to_print = 24;
|
|
|
|
spinlock_t die_lock = __SPIN_LOCK_UNLOCKED(die_lock);
|
|
|
|
ATOMIC_NOTIFIER_HEAD(mn10300_die_chain);
|
|
|
|
/*
|
|
* These constants are for searching for possible module text
|
|
* segments. MODULE_RANGE is a guess of how much space is likely
|
|
* to be vmalloced.
|
|
*/
|
|
#define MODULE_RANGE (8 * 1024 * 1024)
|
|
|
|
#define DO_ERROR(signr, prologue, str, name) \
|
|
asmlinkage void name(struct pt_regs *regs, u32 intcode) \
|
|
{ \
|
|
prologue; \
|
|
if (die_if_no_fixup(str, regs, intcode)) \
|
|
return; \
|
|
force_sig(signr, current); \
|
|
}
|
|
|
|
#define DO_EINFO(signr, prologue, str, name, sicode) \
|
|
asmlinkage void name(struct pt_regs *regs, u32 intcode) \
|
|
{ \
|
|
siginfo_t info; \
|
|
prologue; \
|
|
if (die_if_no_fixup(str, regs, intcode)) \
|
|
return; \
|
|
info.si_signo = signr; \
|
|
if (signr == SIGILL && sicode == ILL_ILLOPC) { \
|
|
uint8_t opcode; \
|
|
if (get_user(opcode, (uint8_t __user *)regs->pc) == 0) \
|
|
if (opcode == 0xff) \
|
|
info.si_signo = SIGTRAP; \
|
|
} \
|
|
info.si_errno = 0; \
|
|
info.si_code = sicode; \
|
|
info.si_addr = (void *) regs->pc; \
|
|
force_sig_info(info.si_signo, &info, current); \
|
|
}
|
|
|
|
DO_ERROR(SIGTRAP, {}, "trap", trap);
|
|
DO_ERROR(SIGSEGV, {}, "ibreak", ibreak);
|
|
DO_ERROR(SIGSEGV, {}, "obreak", obreak);
|
|
DO_EINFO(SIGSEGV, {}, "access error", access_error, SEGV_ACCERR);
|
|
DO_EINFO(SIGSEGV, {}, "insn access error", insn_acc_error, SEGV_ACCERR);
|
|
DO_EINFO(SIGSEGV, {}, "data access error", data_acc_error, SEGV_ACCERR);
|
|
DO_EINFO(SIGILL, {}, "privileged opcode", priv_op, ILL_PRVOPC);
|
|
DO_EINFO(SIGILL, {}, "invalid opcode", invalid_op, ILL_ILLOPC);
|
|
DO_EINFO(SIGILL, {}, "invalid ex opcode", invalid_exop, ILL_ILLOPC);
|
|
DO_EINFO(SIGBUS, {}, "invalid address", mem_error, BUS_ADRERR);
|
|
DO_EINFO(SIGBUS, {}, "bus error", bus_error, BUS_ADRERR);
|
|
DO_EINFO(SIGILL, {}, "FPU invalid opcode", fpu_invalid_op, ILL_COPROC);
|
|
|
|
DO_ERROR(SIGTRAP,
|
|
#ifndef CONFIG_MN10300_USING_JTAG
|
|
DCR &= ~0x0001,
|
|
#else
|
|
{},
|
|
#endif
|
|
"single step", istep);
|
|
|
|
/*
|
|
* handle NMI
|
|
*/
|
|
asmlinkage void nmi(struct pt_regs *regs, enum exception_code code)
|
|
{
|
|
/* see if gdbstub wants to deal with it */
|
|
#ifdef CONFIG_GDBSTUB
|
|
if (gdbstub_intercept(regs, code))
|
|
return;
|
|
#endif
|
|
|
|
printk(KERN_WARNING "--- Register Dump ---\n");
|
|
show_registers(regs);
|
|
printk(KERN_WARNING "---------------------\n");
|
|
}
|
|
|
|
/*
|
|
* show a stack trace from the specified stack pointer
|
|
*/
|
|
void show_trace(unsigned long *sp)
|
|
{
|
|
unsigned long *stack, addr, module_start, module_end;
|
|
int i;
|
|
|
|
printk(KERN_EMERG "\n"
|
|
KERN_EMERG "Call Trace:");
|
|
|
|
stack = sp;
|
|
i = 0;
|
|
module_start = VMALLOC_START;
|
|
module_end = VMALLOC_END;
|
|
|
|
while (((long) stack & (THREAD_SIZE - 1)) != 0) {
|
|
addr = *stack++;
|
|
if (__kernel_text_address(addr)) {
|
|
#if 1
|
|
printk(" [<%08lx>]", addr);
|
|
print_symbol(" %s", addr);
|
|
printk("\n");
|
|
#else
|
|
if ((i % 6) == 0)
|
|
printk("\n" KERN_EMERG " ");
|
|
printk("[<%08lx>] ", addr);
|
|
i++;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
printk("\n");
|
|
}
|
|
|
|
/*
|
|
* show the raw stack from the specified stack pointer
|
|
*/
|
|
void show_stack(struct task_struct *task, unsigned long *sp)
|
|
{
|
|
unsigned long *stack;
|
|
int i;
|
|
|
|
if (!sp)
|
|
sp = (unsigned long *) &sp;
|
|
|
|
stack = sp;
|
|
printk(KERN_EMERG "Stack:");
|
|
for (i = 0; i < kstack_depth_to_print; i++) {
|
|
if (((long) stack & (THREAD_SIZE - 1)) == 0)
|
|
break;
|
|
if ((i % 8) == 0)
|
|
printk("\n" KERN_EMERG " ");
|
|
printk("%08lx ", *stack++);
|
|
}
|
|
|
|
show_trace(sp);
|
|
}
|
|
|
|
/*
|
|
* the architecture-independent dump_stack generator
|
|
*/
|
|
void dump_stack(void)
|
|
{
|
|
unsigned long stack;
|
|
|
|
show_stack(current, &stack);
|
|
}
|
|
EXPORT_SYMBOL(dump_stack);
|
|
|
|
/*
|
|
* dump the register file in the specified exception frame
|
|
*/
|
|
void show_registers_only(struct pt_regs *regs)
|
|
{
|
|
unsigned long ssp;
|
|
|
|
ssp = (unsigned long) regs + sizeof(*regs);
|
|
|
|
printk(KERN_EMERG "PC: %08lx EPSW: %08lx SSP: %08lx mode: %s\n",
|
|
regs->pc, regs->epsw, ssp, user_mode(regs) ? "User" : "Super");
|
|
printk(KERN_EMERG "d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n",
|
|
regs->d0, regs->d1, regs->d2, regs->d3);
|
|
printk(KERN_EMERG "a0: %08lx a1: %08lx a2: %08lx a3: %08lx\n",
|
|
regs->a0, regs->a1, regs->a2, regs->a3);
|
|
printk(KERN_EMERG "e0: %08lx e1: %08lx e2: %08lx e3: %08lx\n",
|
|
regs->e0, regs->e1, regs->e2, regs->e3);
|
|
printk(KERN_EMERG "e4: %08lx e5: %08lx e6: %08lx e7: %08lx\n",
|
|
regs->e4, regs->e5, regs->e6, regs->e7);
|
|
printk(KERN_EMERG "lar: %08lx lir: %08lx mdr: %08lx usp: %08lx\n",
|
|
regs->lar, regs->lir, regs->mdr, regs->sp);
|
|
printk(KERN_EMERG "cvf: %08lx crl: %08lx crh: %08lx drq: %08lx\n",
|
|
regs->mcvf, regs->mcrl, regs->mcrh, regs->mdrq);
|
|
printk(KERN_EMERG "threadinfo=%p task=%p)\n",
|
|
current_thread_info(), current);
|
|
|
|
if ((unsigned long) current >= 0x90000000UL &&
|
|
(unsigned long) current < 0x94000000UL)
|
|
printk(KERN_EMERG "Process %s (pid: %d)\n",
|
|
current->comm, current->pid);
|
|
|
|
printk(KERN_EMERG "CPUP: %04hx\n", CPUP);
|
|
printk(KERN_EMERG "TBR: %08x\n", TBR);
|
|
printk(KERN_EMERG "DEAR: %08x\n", DEAR);
|
|
printk(KERN_EMERG "sISR: %08x\n", sISR);
|
|
printk(KERN_EMERG "NMICR: %04hx\n", NMICR);
|
|
printk(KERN_EMERG "BCBERR: %08x\n", BCBERR);
|
|
printk(KERN_EMERG "BCBEAR: %08x\n", BCBEAR);
|
|
printk(KERN_EMERG "MMUFCR: %08x\n", MMUFCR);
|
|
printk(KERN_EMERG "IPTEU : %08x IPTEL2: %08x\n", IPTEU, IPTEL2);
|
|
printk(KERN_EMERG "DPTEU: %08x DPTEL2: %08x\n", DPTEU, DPTEL2);
|
|
}
|
|
|
|
/*
|
|
* dump the registers and the stack
|
|
*/
|
|
void show_registers(struct pt_regs *regs)
|
|
{
|
|
unsigned long sp;
|
|
int i;
|
|
|
|
show_registers_only(regs);
|
|
|
|
if (!user_mode(regs))
|
|
sp = (unsigned long) regs + sizeof(*regs);
|
|
else
|
|
sp = regs->sp;
|
|
|
|
/* when in-kernel, we also print out the stack and code at the
|
|
* time of the fault..
|
|
*/
|
|
if (!user_mode(regs)) {
|
|
printk(KERN_EMERG "\n");
|
|
show_stack(current, (unsigned long *) sp);
|
|
|
|
#if 0
|
|
printk(KERN_EMERG "\n"
|
|
KERN_EMERG "Code: ");
|
|
if (regs->pc < PAGE_OFFSET)
|
|
goto bad;
|
|
|
|
for (i = 0; i < 20; i++) {
|
|
unsigned char c;
|
|
if (__get_user(c, &((unsigned char *) regs->pc)[i]))
|
|
goto bad;
|
|
printk("%02x ", c);
|
|
}
|
|
#else
|
|
i = 0;
|
|
#endif
|
|
}
|
|
|
|
printk("\n");
|
|
return;
|
|
|
|
#if 0
|
|
bad:
|
|
printk(KERN_EMERG " Bad PC value.");
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
void show_trace_task(struct task_struct *tsk)
|
|
{
|
|
unsigned long sp = tsk->thread.sp;
|
|
|
|
/* User space on another CPU? */
|
|
if ((sp ^ (unsigned long) tsk) & (PAGE_MASK << 1))
|
|
return;
|
|
|
|
show_trace((unsigned long *) sp);
|
|
}
|
|
|
|
/*
|
|
* note the untimely death of part of the kernel
|
|
*/
|
|
void die(const char *str, struct pt_regs *regs, enum exception_code code)
|
|
{
|
|
console_verbose();
|
|
spin_lock_irq(&die_lock);
|
|
printk(KERN_EMERG "\n"
|
|
KERN_EMERG "%s: %04x\n",
|
|
str, code & 0xffff);
|
|
show_registers(regs);
|
|
|
|
if (regs->pc >= 0x02000000 && regs->pc < 0x04000000 &&
|
|
(regs->epsw & (EPSW_IM | EPSW_IE)) != (EPSW_IM | EPSW_IE)) {
|
|
printk(KERN_EMERG "Exception in usermode interrupt handler\n");
|
|
printk(KERN_EMERG "\n"
|
|
KERN_EMERG " Please connect to kernel debugger !!\n");
|
|
asm volatile ("0: bra 0b");
|
|
}
|
|
|
|
spin_unlock_irq(&die_lock);
|
|
do_exit(SIGSEGV);
|
|
}
|
|
|
|
/*
|
|
* see if there's a fixup handler we can force a jump to when an exception
|
|
* happens due to something kernel code did
|
|
*/
|
|
int die_if_no_fixup(const char *str, struct pt_regs *regs,
|
|
enum exception_code code)
|
|
{
|
|
if (user_mode(regs))
|
|
return 0;
|
|
|
|
peripheral_leds_display_exception(code);
|
|
|
|
switch (code) {
|
|
/* see if we can fixup the kernel accessing memory */
|
|
case EXCEP_ITLBMISS:
|
|
case EXCEP_DTLBMISS:
|
|
case EXCEP_IAERROR:
|
|
case EXCEP_DAERROR:
|
|
case EXCEP_MEMERR:
|
|
case EXCEP_MISALIGN:
|
|
case EXCEP_BUSERROR:
|
|
case EXCEP_ILLDATACC:
|
|
case EXCEP_IOINSACC:
|
|
case EXCEP_PRIVINSACC:
|
|
case EXCEP_PRIVDATACC:
|
|
case EXCEP_DATINSACC:
|
|
if (fixup_exception(regs))
|
|
return 1;
|
|
case EXCEP_UNIMPINS:
|
|
if (regs->pc && *(uint8_t *)regs->pc == 0xff)
|
|
if (notify_die(DIE_BREAKPOINT, str, regs, code, 0, 0))
|
|
return 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* see if gdbstub wants to deal with it */
|
|
#ifdef CONFIG_GDBSTUB
|
|
if (gdbstub_intercept(regs, code))
|
|
return 1;
|
|
#endif
|
|
|
|
if (notify_die(DIE_GPF, str, regs, code, 0, 0))
|
|
return 1;
|
|
|
|
/* make the process die as the last resort */
|
|
die(str, regs, code);
|
|
}
|
|
|
|
/*
|
|
* handle unsupported syscall instructions (syscall 1-15)
|
|
*/
|
|
static asmlinkage void unsupported_syscall(struct pt_regs *regs,
|
|
enum exception_code code)
|
|
{
|
|
struct task_struct *tsk = current;
|
|
siginfo_t info;
|
|
|
|
/* catch a kernel BUG() */
|
|
if (code == EXCEP_SYSCALL15 && !user_mode(regs)) {
|
|
if (report_bug(regs->pc, regs) == BUG_TRAP_TYPE_BUG) {
|
|
#ifdef CONFIG_GDBSTUB
|
|
gdbstub_intercept(regs, code);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
regs->pc -= 2; /* syscall return addr is _after_ the instruction */
|
|
|
|
die_if_no_fixup("An unsupported syscall insn was used by the kernel\n",
|
|
regs, code);
|
|
|
|
info.si_signo = SIGILL;
|
|
info.si_errno = ENOSYS;
|
|
info.si_code = ILL_ILLTRP;
|
|
info.si_addr = (void *) regs->pc;
|
|
force_sig_info(SIGILL, &info, tsk);
|
|
}
|
|
|
|
/*
|
|
* display the register file when the stack pointer gets clobbered
|
|
*/
|
|
asmlinkage void do_double_fault(struct pt_regs *regs)
|
|
{
|
|
struct task_struct *tsk = current;
|
|
|
|
strcpy(tsk->comm, "emergency tsk");
|
|
tsk->pid = 0;
|
|
console_verbose();
|
|
printk(KERN_EMERG "--- double fault ---\n");
|
|
show_registers(regs);
|
|
}
|
|
|
|
/*
|
|
* asynchronous bus error (external, usually I/O DMA)
|
|
*/
|
|
asmlinkage void io_bus_error(u32 bcberr, u32 bcbear, struct pt_regs *regs)
|
|
{
|
|
console_verbose();
|
|
|
|
printk(KERN_EMERG "\n"
|
|
KERN_EMERG "Asynchronous I/O Bus Error\n"
|
|
KERN_EMERG "==========================\n");
|
|
|
|
if (bcberr & BCBERR_BEME)
|
|
printk(KERN_EMERG "- Multiple recorded errors\n");
|
|
|
|
printk(KERN_EMERG "- Faulting Buses:%s%s%s\n",
|
|
bcberr & BCBERR_BEMR_CI ? " CPU-Ins-Fetch" : "",
|
|
bcberr & BCBERR_BEMR_CD ? " CPU-Data" : "",
|
|
bcberr & BCBERR_BEMR_DMA ? " DMA" : "");
|
|
|
|
printk(KERN_EMERG "- %s %s access made to %s at address %08x\n",
|
|
bcberr & BCBERR_BEBST ? "Burst" : "Single",
|
|
bcberr & BCBERR_BERW ? "Read" : "Write",
|
|
bcberr & BCBERR_BESB_MON ? "Monitor Space" :
|
|
bcberr & BCBERR_BESB_IO ? "Internal CPU I/O Space" :
|
|
bcberr & BCBERR_BESB_EX ? "External I/O Bus" :
|
|
bcberr & BCBERR_BESB_OPEX ? "External Memory Bus" :
|
|
"On Chip Memory",
|
|
bcbear
|
|
);
|
|
|
|
printk(KERN_EMERG "- Detected by the %s\n",
|
|
bcberr&BCBERR_BESD ? "Bus Control Unit" : "Slave Bus");
|
|
|
|
#ifdef CONFIG_PCI
|
|
#define BRIDGEREGB(X) (*(volatile __u8 *)(0xBE040000 + (X)))
|
|
#define BRIDGEREGW(X) (*(volatile __u16 *)(0xBE040000 + (X)))
|
|
#define BRIDGEREGL(X) (*(volatile __u32 *)(0xBE040000 + (X)))
|
|
|
|
printk(KERN_EMERG "- PCI Memory Paging Reg: %08x\n",
|
|
*(volatile __u32 *) (0xBFFFFFF4));
|
|
printk(KERN_EMERG "- PCI Bridge Base Address 0: %08x\n",
|
|
BRIDGEREGL(PCI_BASE_ADDRESS_0));
|
|
printk(KERN_EMERG "- PCI Bridge AMPCI Base Address: %08x\n",
|
|
BRIDGEREGL(0x48));
|
|
printk(KERN_EMERG "- PCI Bridge Command: %04hx\n",
|
|
BRIDGEREGW(PCI_COMMAND));
|
|
printk(KERN_EMERG "- PCI Bridge Status: %04hx\n",
|
|
BRIDGEREGW(PCI_STATUS));
|
|
printk(KERN_EMERG "- PCI Bridge Int Status: %08hx\n",
|
|
BRIDGEREGL(0x4c));
|
|
#endif
|
|
|
|
printk(KERN_EMERG "\n");
|
|
show_registers(regs);
|
|
|
|
panic("Halted due to asynchronous I/O Bus Error\n");
|
|
}
|
|
|
|
/*
|
|
* handle an exception for which a handler has not yet been installed
|
|
*/
|
|
asmlinkage void uninitialised_exception(struct pt_regs *regs,
|
|
enum exception_code code)
|
|
{
|
|
|
|
/* see if gdbstub wants to deal with it */
|
|
#ifdef CONFIG_GDBSTUB
|
|
if (gdbstub_intercept(regs, code))
|
|
return;
|
|
#endif
|
|
|
|
peripheral_leds_display_exception(code);
|
|
printk(KERN_EMERG "Uninitialised Exception 0x%04x\n", code & 0xFFFF);
|
|
show_registers(regs);
|
|
|
|
for (;;)
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* set an interrupt stub to jump to a handler
|
|
* ! NOTE: this does *not* flush the caches
|
|
*/
|
|
void __init __set_intr_stub(enum exception_code code, void *handler)
|
|
{
|
|
unsigned long addr;
|
|
u8 *vector = (u8 *)(CONFIG_INTERRUPT_VECTOR_BASE + code);
|
|
|
|
addr = (unsigned long) handler - (unsigned long) vector;
|
|
vector[0] = 0xdc; /* JMP handler */
|
|
vector[1] = addr;
|
|
vector[2] = addr >> 8;
|
|
vector[3] = addr >> 16;
|
|
vector[4] = addr >> 24;
|
|
vector[5] = 0xcb;
|
|
vector[6] = 0xcb;
|
|
vector[7] = 0xcb;
|
|
}
|
|
|
|
/*
|
|
* set an interrupt stub to jump to a handler
|
|
*/
|
|
void __init set_intr_stub(enum exception_code code, void *handler)
|
|
{
|
|
unsigned long addr;
|
|
u8 *vector = (u8 *)(CONFIG_INTERRUPT_VECTOR_BASE + code);
|
|
|
|
addr = (unsigned long) handler - (unsigned long) vector;
|
|
vector[0] = 0xdc; /* JMP handler */
|
|
vector[1] = addr;
|
|
vector[2] = addr >> 8;
|
|
vector[3] = addr >> 16;
|
|
vector[4] = addr >> 24;
|
|
vector[5] = 0xcb;
|
|
vector[6] = 0xcb;
|
|
vector[7] = 0xcb;
|
|
|
|
mn10300_dcache_flush_inv();
|
|
mn10300_icache_inv();
|
|
}
|
|
|
|
/*
|
|
* set an interrupt stub to invoke the JTAG unit and then jump to a handler
|
|
*/
|
|
void __init set_jtag_stub(enum exception_code code, void *handler)
|
|
{
|
|
unsigned long addr;
|
|
u8 *vector = (u8 *)(CONFIG_INTERRUPT_VECTOR_BASE + code);
|
|
|
|
addr = (unsigned long) handler - ((unsigned long) vector + 1);
|
|
vector[0] = 0xff; /* PI to jump into JTAG debugger */
|
|
vector[1] = 0xdc; /* jmp handler */
|
|
vector[2] = addr;
|
|
vector[3] = addr >> 8;
|
|
vector[4] = addr >> 16;
|
|
vector[5] = addr >> 24;
|
|
vector[6] = 0xcb;
|
|
vector[7] = 0xcb;
|
|
|
|
mn10300_dcache_flush_inv();
|
|
flush_icache_range((unsigned long) vector, (unsigned long) vector + 8);
|
|
}
|
|
|
|
/*
|
|
* initialise the exception table
|
|
*/
|
|
void __init trap_init(void)
|
|
{
|
|
set_excp_vector(EXCEP_TRAP, trap);
|
|
set_excp_vector(EXCEP_ISTEP, istep);
|
|
set_excp_vector(EXCEP_IBREAK, ibreak);
|
|
set_excp_vector(EXCEP_OBREAK, obreak);
|
|
|
|
set_excp_vector(EXCEP_PRIVINS, priv_op);
|
|
set_excp_vector(EXCEP_UNIMPINS, invalid_op);
|
|
set_excp_vector(EXCEP_UNIMPEXINS, invalid_exop);
|
|
set_excp_vector(EXCEP_MEMERR, mem_error);
|
|
set_excp_vector(EXCEP_MISALIGN, misalignment);
|
|
set_excp_vector(EXCEP_BUSERROR, bus_error);
|
|
set_excp_vector(EXCEP_ILLINSACC, insn_acc_error);
|
|
set_excp_vector(EXCEP_ILLDATACC, data_acc_error);
|
|
set_excp_vector(EXCEP_IOINSACC, insn_acc_error);
|
|
set_excp_vector(EXCEP_PRIVINSACC, insn_acc_error);
|
|
set_excp_vector(EXCEP_PRIVDATACC, data_acc_error);
|
|
set_excp_vector(EXCEP_DATINSACC, insn_acc_error);
|
|
set_excp_vector(EXCEP_FPU_DISABLED, fpu_disabled);
|
|
set_excp_vector(EXCEP_FPU_UNIMPINS, fpu_invalid_op);
|
|
set_excp_vector(EXCEP_FPU_OPERATION, fpu_exception);
|
|
|
|
set_excp_vector(EXCEP_NMI, nmi);
|
|
|
|
set_excp_vector(EXCEP_SYSCALL1, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL2, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL3, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL4, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL5, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL6, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL7, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL8, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL9, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL10, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL11, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL12, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL13, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL14, unsupported_syscall);
|
|
set_excp_vector(EXCEP_SYSCALL15, unsupported_syscall);
|
|
}
|
|
|
|
/*
|
|
* determine if a program counter value is a valid bug address
|
|
*/
|
|
int is_valid_bugaddr(unsigned long pc)
|
|
{
|
|
return pc >= PAGE_OFFSET;
|
|
}
|