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Diffstat (limited to 'arch/m68k/kernel/traps.c')
-rw-r--r--arch/m68k/kernel/traps.c189
1 files changed, 79 insertions, 110 deletions
diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c
index cdf58fbb3e73..4569406a2e1f 100644
--- a/arch/m68k/kernel/traps.c
+++ b/arch/m68k/kernel/traps.c
@@ -18,7 +18,6 @@
* Sets up all exception vectors
*/
-#include <linux/config.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/kernel.h>
@@ -45,7 +44,6 @@
asmlinkage void system_call(void);
asmlinkage void buserr(void);
asmlinkage void trap(void);
-asmlinkage void inthandler(void);
asmlinkage void nmihandler(void);
#ifdef CONFIG_M68KFPU_EMU
asmlinkage void fpu_emu(void);
@@ -53,51 +51,7 @@ asmlinkage void fpu_emu(void);
e_vector vectors[256] = {
[VEC_BUSERR] = buserr,
- [VEC_ADDRERR] = trap,
- [VEC_ILLEGAL] = trap,
- [VEC_ZERODIV] = trap,
- [VEC_CHK] = trap,
- [VEC_TRAP] = trap,
- [VEC_PRIV] = trap,
- [VEC_TRACE] = trap,
- [VEC_LINE10] = trap,
- [VEC_LINE11] = trap,
- [VEC_RESV12] = trap,
- [VEC_COPROC] = trap,
- [VEC_FORMAT] = trap,
- [VEC_UNINT] = trap,
- [VEC_RESV16] = trap,
- [VEC_RESV17] = trap,
- [VEC_RESV18] = trap,
- [VEC_RESV19] = trap,
- [VEC_RESV20] = trap,
- [VEC_RESV21] = trap,
- [VEC_RESV22] = trap,
- [VEC_RESV23] = trap,
- [VEC_SPUR] = inthandler,
- [VEC_INT1] = inthandler,
- [VEC_INT2] = inthandler,
- [VEC_INT3] = inthandler,
- [VEC_INT4] = inthandler,
- [VEC_INT5] = inthandler,
- [VEC_INT6] = inthandler,
- [VEC_INT7] = inthandler,
[VEC_SYS] = system_call,
- [VEC_TRAP1] = trap,
- [VEC_TRAP2] = trap,
- [VEC_TRAP3] = trap,
- [VEC_TRAP4] = trap,
- [VEC_TRAP5] = trap,
- [VEC_TRAP6] = trap,
- [VEC_TRAP7] = trap,
- [VEC_TRAP8] = trap,
- [VEC_TRAP9] = trap,
- [VEC_TRAP10] = trap,
- [VEC_TRAP11] = trap,
- [VEC_TRAP12] = trap,
- [VEC_TRAP13] = trap,
- [VEC_TRAP14] = trap,
- [VEC_TRAP15] = trap,
};
/* nmi handler for the Amiga */
@@ -114,7 +68,7 @@ void __init base_trap_init(void)
if(MACH_IS_SUN3X) {
extern e_vector *sun3x_prom_vbr;
- __asm__ volatile ("movec %%vbr, %0" : "=r" ((void*)sun3x_prom_vbr));
+ __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
}
/* setup the exception vector table */
@@ -132,12 +86,15 @@ void __init trap_init (void)
{
int i;
- for (i = 48; i < 64; i++)
+ for (i = VEC_SPUR; i <= VEC_INT7; i++)
+ vectors[i] = bad_inthandler;
+
+ for (i = 0; i < VEC_USER; i++)
if (!vectors[i])
vectors[i] = trap;
- for (i = 64; i < 256; i++)
- vectors[i] = inthandler;
+ for (i = VEC_USER; i < 256; i++)
+ vectors[i] = bad_inthandler;
#ifdef CONFIG_M68KFPU_EMU
if (FPU_IS_EMU)
@@ -927,71 +884,94 @@ void show_trace(unsigned long *stack)
void show_registers(struct pt_regs *regs)
{
struct frame *fp = (struct frame *)regs;
+ mm_segment_t old_fs = get_fs();
+ u16 c, *cp;
unsigned long addr;
int i;
+ print_modules();
+ printk("PC: [<%08lx>]",regs->pc);
+ print_symbol(" %s", regs->pc);
+ printk("\nSR: %04x SP: %p a2: %08lx\n",
+ regs->sr, regs, regs->a2);
+ printk("d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n",
+ regs->d0, regs->d1, regs->d2, regs->d3);
+ printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n",
+ regs->d4, regs->d5, regs->a0, regs->a1);
+
+ printk("Process %s (pid: %d, task=%p)\n",
+ current->comm, current->pid, current);
addr = (unsigned long)&fp->un;
- printk("Frame format=%X ", fp->ptregs.format);
- switch (fp->ptregs.format) {
+ printk("Frame format=%X ", regs->format);
+ switch (regs->format) {
case 0x2:
- printk("instr addr=%08lx\n", fp->un.fmt2.iaddr);
- addr += sizeof(fp->un.fmt2);
- break;
+ printk("instr addr=%08lx\n", fp->un.fmt2.iaddr);
+ addr += sizeof(fp->un.fmt2);
+ break;
case 0x3:
- printk("eff addr=%08lx\n", fp->un.fmt3.effaddr);
- addr += sizeof(fp->un.fmt3);
- break;
+ printk("eff addr=%08lx\n", fp->un.fmt3.effaddr);
+ addr += sizeof(fp->un.fmt3);
+ break;
case 0x4:
- printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n"
- : "eff addr=%08lx pc=%08lx\n"),
- fp->un.fmt4.effaddr, fp->un.fmt4.pc);
- addr += sizeof(fp->un.fmt4);
- break;
+ printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n"
+ : "eff addr=%08lx pc=%08lx\n"),
+ fp->un.fmt4.effaddr, fp->un.fmt4.pc);
+ addr += sizeof(fp->un.fmt4);
+ break;
case 0x7:
- printk("eff addr=%08lx ssw=%04x faddr=%08lx\n",
- fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr);
- printk("wb 1 stat/addr/data: %04x %08lx %08lx\n",
- fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0);
- printk("wb 2 stat/addr/data: %04x %08lx %08lx\n",
- fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d);
- printk("wb 3 stat/addr/data: %04x %08lx %08lx\n",
- fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d);
- printk("push data: %08lx %08lx %08lx %08lx\n",
- fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2,
- fp->un.fmt7.pd3);
- addr += sizeof(fp->un.fmt7);
- break;
+ printk("eff addr=%08lx ssw=%04x faddr=%08lx\n",
+ fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr);
+ printk("wb 1 stat/addr/data: %04x %08lx %08lx\n",
+ fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0);
+ printk("wb 2 stat/addr/data: %04x %08lx %08lx\n",
+ fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d);
+ printk("wb 3 stat/addr/data: %04x %08lx %08lx\n",
+ fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d);
+ printk("push data: %08lx %08lx %08lx %08lx\n",
+ fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2,
+ fp->un.fmt7.pd3);
+ addr += sizeof(fp->un.fmt7);
+ break;
case 0x9:
- printk("instr addr=%08lx\n", fp->un.fmt9.iaddr);
- addr += sizeof(fp->un.fmt9);
- break;
+ printk("instr addr=%08lx\n", fp->un.fmt9.iaddr);
+ addr += sizeof(fp->un.fmt9);
+ break;
case 0xa:
- printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
- fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb,
- fp->un.fmta.daddr, fp->un.fmta.dobuf);
- addr += sizeof(fp->un.fmta);
- break;
+ printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
+ fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb,
+ fp->un.fmta.daddr, fp->un.fmta.dobuf);
+ addr += sizeof(fp->un.fmta);
+ break;
case 0xb:
- printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
- fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb,
- fp->un.fmtb.daddr, fp->un.fmtb.dobuf);
- printk("baddr=%08lx dibuf=%08lx ver=%x\n",
- fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver);
- addr += sizeof(fp->un.fmtb);
- break;
+ printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
+ fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb,
+ fp->un.fmtb.daddr, fp->un.fmtb.dobuf);
+ printk("baddr=%08lx dibuf=%08lx ver=%x\n",
+ fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver);
+ addr += sizeof(fp->un.fmtb);
+ break;
default:
- printk("\n");
+ printk("\n");
}
show_stack(NULL, (unsigned long *)addr);
- printk("Code: ");
- for (i = 0; i < 10; i++)
- printk("%04x ", 0xffff & ((short *) fp->ptregs.pc)[i]);
+ printk("Code:");
+ set_fs(KERNEL_DS);
+ cp = (u16 *)regs->pc;
+ for (i = -8; i < 16; i++) {
+ if (get_user(c, cp + i) && i >= 0) {
+ printk(" Bad PC value.");
+ break;
+ }
+ printk(i ? " %04x" : " <%04x>", c);
+ }
+ set_fs(old_fs);
printk ("\n");
}
void show_stack(struct task_struct *task, unsigned long *stack)
{
+ unsigned long *p;
unsigned long *endstack;
int i;
@@ -1004,12 +984,13 @@ void show_stack(struct task_struct *task, unsigned long *stack)
endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE);
printk("Stack from %08lx:", (unsigned long)stack);
+ p = stack;
for (i = 0; i < kstack_depth_to_print; i++) {
- if (stack + 1 > endstack)
+ if (p + 1 > endstack)
break;
if (i % 8 == 0)
printk("\n ");
- printk(" %08lx", *stack++);
+ printk(" %08lx", *p++);
}
printk("\n");
show_trace(stack);
@@ -1188,19 +1169,7 @@ void die_if_kernel (char *str, struct pt_regs *fp, int nr)
console_verbose();
printk("%s: %08x\n",str,nr);
- print_modules();
- printk("PC: [<%08lx>]",fp->pc);
- print_symbol(" %s\n", fp->pc);
- printk("\nSR: %04x SP: %p a2: %08lx\n",
- fp->sr, fp, fp->a2);
- printk("d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n",
- fp->d0, fp->d1, fp->d2, fp->d3);
- printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n",
- fp->d4, fp->d5, fp->a0, fp->a1);
-
- printk("Process %s (pid: %d, stackpage=%08lx)\n",
- current->comm, current->pid, PAGE_SIZE+(unsigned long)current);
- show_stack(NULL, (unsigned long *)fp);
+ show_registers(fp);
do_exit(SIGSEGV);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.