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Diffstat (limited to 'arch/mn10300/kernel/traps.c')
-rw-r--r--arch/mn10300/kernel/traps.c615
1 files changed, 0 insertions, 615 deletions
diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c
deleted file mode 100644
index 72d1015b2ae7..000000000000
--- a/arch/mn10300/kernel/traps.c
+++ /dev/null
@@ -1,615 +0,0 @@
-/* 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/sched/debug.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/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/kdebug.h>
-#include <linux/bug.h>
-#include <linux/irq.h>
-#include <linux/export.h>
-#include <asm/processor.h>
-#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <linux/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 <unit/leds.h>
-#include <asm/fpu.h>
-#include <asm/sections.h>
-#include <asm/debugger.h>
-#include "internal.h"
-
-#if (CONFIG_INTERRUPT_VECTOR_BASE & 0xffffff)
-#error "INTERRUPT_VECTOR_BASE not aligned to 16MiB boundary!"
-#endif
-
-int kstack_depth_to_print = 24;
-
-spinlock_t die_lock = __SPIN_LOCK_UNLOCKED(die_lock);
-
-struct exception_to_signal_map {
- u8 signo;
- u32 si_code;
-};
-
-static const struct exception_to_signal_map exception_to_signal_map[256] = {
- /* MMU exceptions */
- [EXCEP_ITLBMISS >> 3] = { 0, 0 },
- [EXCEP_DTLBMISS >> 3] = { 0, 0 },
- [EXCEP_IAERROR >> 3] = { 0, 0 },
- [EXCEP_DAERROR >> 3] = { 0, 0 },
-
- /* system exceptions */
- [EXCEP_TRAP >> 3] = { SIGTRAP, TRAP_BRKPT },
- [EXCEP_ISTEP >> 3] = { SIGTRAP, TRAP_TRACE }, /* Monitor */
- [EXCEP_IBREAK >> 3] = { SIGTRAP, TRAP_HWBKPT }, /* Monitor */
- [EXCEP_OBREAK >> 3] = { SIGTRAP, TRAP_HWBKPT }, /* Monitor */
- [EXCEP_PRIVINS >> 3] = { SIGILL, ILL_PRVOPC },
- [EXCEP_UNIMPINS >> 3] = { SIGILL, ILL_ILLOPC },
- [EXCEP_UNIMPEXINS >> 3] = { SIGILL, ILL_ILLOPC },
- [EXCEP_MEMERR >> 3] = { SIGSEGV, SEGV_ACCERR },
- [EXCEP_MISALIGN >> 3] = { SIGBUS, BUS_ADRALN },
- [EXCEP_BUSERROR >> 3] = { SIGBUS, BUS_ADRERR },
- [EXCEP_ILLINSACC >> 3] = { SIGSEGV, SEGV_ACCERR },
- [EXCEP_ILLDATACC >> 3] = { SIGSEGV, SEGV_ACCERR },
- [EXCEP_IOINSACC >> 3] = { SIGSEGV, SEGV_ACCERR },
- [EXCEP_PRIVINSACC >> 3] = { SIGSEGV, SEGV_ACCERR }, /* userspace */
- [EXCEP_PRIVDATACC >> 3] = { SIGSEGV, SEGV_ACCERR }, /* userspace */
- [EXCEP_DATINSACC >> 3] = { SIGSEGV, SEGV_ACCERR },
- [EXCEP_DOUBLE_FAULT >> 3] = { SIGILL, ILL_BADSTK },
-
- /* FPU exceptions */
- [EXCEP_FPU_DISABLED >> 3] = { SIGILL, ILL_COPROC },
- [EXCEP_FPU_UNIMPINS >> 3] = { SIGILL, ILL_COPROC },
- [EXCEP_FPU_OPERATION >> 3] = { SIGFPE, FPE_INTDIV },
-
- /* interrupts */
- [EXCEP_WDT >> 3] = { SIGALRM, 0 },
- [EXCEP_NMI >> 3] = { SIGQUIT, 0 },
- [EXCEP_IRQ_LEVEL0 >> 3] = { SIGINT, 0 },
- [EXCEP_IRQ_LEVEL1 >> 3] = { 0, 0 },
- [EXCEP_IRQ_LEVEL2 >> 3] = { 0, 0 },
- [EXCEP_IRQ_LEVEL3 >> 3] = { 0, 0 },
- [EXCEP_IRQ_LEVEL4 >> 3] = { 0, 0 },
- [EXCEP_IRQ_LEVEL5 >> 3] = { 0, 0 },
- [EXCEP_IRQ_LEVEL6 >> 3] = { 0, 0 },
-
- /* system calls */
- [EXCEP_SYSCALL0 >> 3] = { 0, 0 },
- [EXCEP_SYSCALL1 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL2 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL3 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL4 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL5 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL6 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL7 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL8 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL9 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL10 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL11 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL12 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL13 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL14 >> 3] = { SIGILL, ILL_ILLTRP },
- [EXCEP_SYSCALL15 >> 3] = { SIGABRT, 0 },
-};
-
-/*
- * Handle kernel exceptions.
- *
- * 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)
-{
- u8 opcode;
- int signo, si_code;
-
- if (user_mode(regs))
- return 0;
-
- peripheral_leds_display_exception(code);
-
- signo = exception_to_signal_map[code >> 3].signo;
- si_code = exception_to_signal_map[code >> 3].si_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;
- break;
-
- case EXCEP_TRAP:
- case EXCEP_UNIMPINS:
- if (probe_kernel_read(&opcode, (u8 *)regs->pc, 1) < 0)
- break;
- if (opcode == 0xff) {
- if (notify_die(DIE_BREAKPOINT, str, regs, code, 0, 0))
- return 1;
- if (at_debugger_breakpoint(regs))
- regs->pc++;
- signo = SIGTRAP;
- si_code = TRAP_BRKPT;
- }
- break;
-
- case EXCEP_SYSCALL1 ... EXCEP_SYSCALL14:
- /* syscall return addr is _after_ the instruction */
- regs->pc -= 2;
- break;
-
- case EXCEP_SYSCALL15:
- if (report_bug(regs->pc, regs) == BUG_TRAP_TYPE_WARN)
- return 1;
-
- /* syscall return addr is _after_ the instruction */
- regs->pc -= 2;
- break;
-
- default:
- break;
- }
-
- if (debugger_intercept(code, signo, si_code, regs) == 0)
- return 1;
-
- if (notify_die(DIE_GPF, str, regs, code, 0, 0))
- return 1;
-
- /* make the process die as the last resort */
- die(str, regs, code);
-}
-
-/*
- * General exception handler
- */
-asmlinkage void handle_exception(struct pt_regs *regs, u32 intcode)
-{
- siginfo_t info;
-
- /* deal with kernel exceptions here */
- if (die_if_no_fixup(NULL, regs, intcode))
- return;
-
- /* otherwise it's a userspace exception */
- info.si_signo = exception_to_signal_map[intcode >> 3].signo;
- info.si_code = exception_to_signal_map[intcode >> 3].si_code;
- info.si_errno = 0;
- info.si_addr = (void *) regs->pc;
- force_sig_info(info.si_signo, &info, current);
-}
-
-/*
- * handle NMI
- */
-asmlinkage void nmi(struct pt_regs *regs, enum exception_code code)
-{
- /* see if gdbstub wants to deal with it */
- if (debugger_intercept(code, SIGQUIT, 0, regs))
- return;
-
- 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 bottom, stack, addr, fp, raslot;
-
- printk(KERN_EMERG "\nCall Trace:\n");
-
- //stack = (unsigned long)sp;
- asm("mov sp,%0" : "=a"(stack));
- asm("mov a3,%0" : "=r"(fp));
-
- raslot = ULONG_MAX;
- bottom = (stack + THREAD_SIZE) & ~(THREAD_SIZE - 1);
- for (; stack < bottom; stack += sizeof(addr)) {
- addr = *(unsigned long *)stack;
- if (stack == fp) {
- if (addr > stack && addr < bottom) {
- fp = addr;
- raslot = stack + sizeof(addr);
- continue;
- }
- fp = 0;
- raslot = ULONG_MAX;
- }
-
- if (__kernel_text_address(addr)) {
- printk(" [<%08lx>]", addr);
- if (stack >= raslot)
- raslot = ULONG_MAX;
- else
- printk(" ?");
- printk(" %pS\n", (void *)addr);
- }
- }
-
- 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(KERN_EMERG " ");
- printk("%08lx ", *stack++);
- }
-
- show_trace(sp);
-}
-
-/*
- * 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 >= PAGE_OFFSET &&
- (unsigned long) current < (unsigned long)high_memory)
- printk(KERN_EMERG "Process %s (pid: %d)\n",
- current->comm, current->pid);
-
-#ifdef CONFIG_SMP
- printk(KERN_EMERG "CPUID: %08x\n", CPUID);
-#endif
- 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 "\nCode: ");
- 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%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 "\nPlease connect to kernel debugger !!\n");
- asm volatile ("0: bra 0b");
- }
-
- spin_unlock_irq(&die_lock);
- do_exit(SIGSEGV);
-}
-
-/*
- * 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 "Asynchronous I/O Bus Error\n");
- printk(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 */
- if (debugger_intercept(code, SIGSYS, 0, regs) == 0)
- return;
-
- 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);
- unsigned long flags;
-
- addr = (unsigned long) handler - (unsigned long) vector;
-
- flags = arch_local_cli_save();
-
- 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;
-
- arch_local_irq_restore(flags);
-
-#ifndef CONFIG_MN10300_CACHE_SNOOP
- mn10300_dcache_flush_inv();
- mn10300_icache_inv();
-#endif
-}
-
-/*
- * initialise the exception table
- */
-void __init trap_init(void)
-{
- set_excp_vector(EXCEP_TRAP, handle_exception);
- set_excp_vector(EXCEP_ISTEP, handle_exception);
- set_excp_vector(EXCEP_IBREAK, handle_exception);
- set_excp_vector(EXCEP_OBREAK, handle_exception);
-
- set_excp_vector(EXCEP_PRIVINS, handle_exception);
- set_excp_vector(EXCEP_UNIMPINS, handle_exception);
- set_excp_vector(EXCEP_UNIMPEXINS, handle_exception);
- set_excp_vector(EXCEP_MEMERR, handle_exception);
- set_excp_vector(EXCEP_MISALIGN, misalignment);
- set_excp_vector(EXCEP_BUSERROR, handle_exception);
- set_excp_vector(EXCEP_ILLINSACC, handle_exception);
- set_excp_vector(EXCEP_ILLDATACC, handle_exception);
- set_excp_vector(EXCEP_IOINSACC, handle_exception);
- set_excp_vector(EXCEP_PRIVINSACC, handle_exception);
- set_excp_vector(EXCEP_PRIVDATACC, handle_exception);
- set_excp_vector(EXCEP_DATINSACC, handle_exception);
- set_excp_vector(EXCEP_FPU_UNIMPINS, handle_exception);
- set_excp_vector(EXCEP_FPU_OPERATION, fpu_exception);
-
- set_excp_vector(EXCEP_NMI, nmi);
-
- set_excp_vector(EXCEP_SYSCALL1, handle_exception);
- set_excp_vector(EXCEP_SYSCALL2, handle_exception);
- set_excp_vector(EXCEP_SYSCALL3, handle_exception);
- set_excp_vector(EXCEP_SYSCALL4, handle_exception);
- set_excp_vector(EXCEP_SYSCALL5, handle_exception);
- set_excp_vector(EXCEP_SYSCALL6, handle_exception);
- set_excp_vector(EXCEP_SYSCALL7, handle_exception);
- set_excp_vector(EXCEP_SYSCALL8, handle_exception);
- set_excp_vector(EXCEP_SYSCALL9, handle_exception);
- set_excp_vector(EXCEP_SYSCALL10, handle_exception);
- set_excp_vector(EXCEP_SYSCALL11, handle_exception);
- set_excp_vector(EXCEP_SYSCALL12, handle_exception);
- set_excp_vector(EXCEP_SYSCALL13, handle_exception);
- set_excp_vector(EXCEP_SYSCALL14, handle_exception);
- set_excp_vector(EXCEP_SYSCALL15, handle_exception);
-}
-
-/*
- * determine if a program counter value is a valid bug address
- */
-int is_valid_bugaddr(unsigned long pc)
-{
- return pc >= PAGE_OFFSET;
-}