patch-1.3.45 linux/arch/ppc/kernel/traps.c

• Lines: 120
• Date: Sat Nov 25 13:52:23 1995
• Orig file: v1.3.44/linux/arch/ppc/kernel/traps.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.44/linux/arch/ppc/kernel/traps.c linux/arch/ppc/kernel/traps.c
@@ -0,0 +1,119 @@
+/*
+ *  linux/arch/ppc/kernel/traps.c
+ *
+ *  Copyright (C) 1995  Gary Thomas
+ *  Adapted for PowerPC by Gary THomas
+ */
+
+/*
+ * This file handles the architecture-dependent parts of hardware exceptions
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/malloc.h>
+#include <linux/ldt.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+
+#include <asm/pgtable.h>
+#include <asm/segment.h>
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include <asm/processor.h>
+
+/*
+ * Trap & Exception support
+ */
+
+void
+trap_init(void)
+{
+}
+
+void
+_exception(int signr, struct pt_regs *regs)
+{
+	dump_regs(regs);
+	send_sig(signr, current, 1);
+	if (!user_mode(regs))
+	{
+		printk("Failure in kernel at PC: %x, MSR: %x\n", regs->nip, regs->msr);
+		while (1) ;
+	}
+}
+
+MachineCheckException(struct pt_regs *regs)
+{
+	unsigned long *eagle_ip = (unsigned long *)0x80000CF8;
+	unsigned long *eagle_id = (unsigned long *)0x80000CFC;
+	printk("Machine check at PC: %x[%x], SR: %x\n", regs->nip, va_to_phys(regs->nip), regs->msr);
+#if 0	
+	*eagle_ip = 0xC0000080;  /* Memory error register */
+	printk("Error regs = %08X", *eagle_id);
+	*eagle_ip = 0xC4000080;  /* Memory error register */
+	printk("/%08X", *eagle_id);
+	*eagle_ip = 0xC8000080;  /* Memory error register */
+	printk("/%08X\n", *eagle_id);
+#endif
+	_exception(SIGSEGV, regs);	
+}
+
+ProgramCheckException(struct pt_regs *regs)
+{
+	printk("Program check at PC: %x[%x], SR: %x\n", regs->nip, va_to_phys(regs->nip), regs->msr);
+	_exception(SIGILL, regs);	
+}
+
+FloatingPointCheckException(struct pt_regs *regs)
+{
+	printk("Floating point check at PC: %x[%x], SR: %x\n", regs->nip, va_to_phys(regs->nip), regs->msr);
+	_exception(SIGFPE, regs);	
+}
+
+AlignmentException(struct pt_regs *regs)
+{
+	printk("Alignment error at PC: %x[%x], SR: %x\n", regs->nip, va_to_phys(regs->nip), regs->msr);
+	_exception(SIGBUS, regs);	
+}
+
+bad_stack(struct pt_regs *regs)
+{
+	printk("Kernel stack overflow at PC: %x[%x], SR: %x\n", regs->nip, va_to_phys(regs->nip), regs->msr);
+	dump_regs(regs);
+	while (1) ;
+}
+
+dump_regs(struct pt_regs *regs)
+{
+	int i;
+	printk("NIP: %08X, MSR: %08X, XER: %08X, LR: %08X, FRAME: %08X\n", regs->nip, regs->msr, regs->xer, regs->link, regs);
+	printk("HASH = %08X/%08X, MISS = %08X/%08X, CMP = %08X/%08X\n", regs->hash1, regs->hash2, regs->imiss, regs->dmiss, regs->icmp, regs->dcmp);
+	printk("TASK = %x[%d] '%s'\n", current, current->pid, current->comm);
+	for (i = 0;  i < 32;  i++)
+	{
+		if ((i % 8) == 0)
+		{
+			printk("GPR%02d: ", i);
+		}
+		printk("%08X ", regs->gpr[i]);
+		if ((i % 8) == 7)
+		{
+			printk("\n");
+		}
+	}
+	dump_buf(regs->nip, 32);
+	dump_buf((regs->nip&0x0FFFFFFF)|KERNELBASE, 32);
+}
+
+trace_syscall(struct pt_regs *regs)
+{
+	printk("Task: %08X(%d), PC: %08X/%08X, Syscall: %3d, Result: %d\n", current, current->pid, regs->nip, regs->link, regs->gpr[0], regs->gpr[3]);
+}
+