traps.c (79acbb3ff2d8095b692e1502b9eb2ccec348de26) traps.c (68a64357d15ae4f596e92715719071952006e83c)
1/*
2 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *

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48#include <asm/backlight.h>
49#endif
50#ifdef CONFIG_PPC64
51#include <asm/firmware.h>
52#include <asm/processor.h>
53#endif
54#include <asm/kexec.h>
55
1/*
2 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *

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48#include <asm/backlight.h>
49#endif
50#ifdef CONFIG_PPC64
51#include <asm/firmware.h>
52#include <asm/processor.h>
53#endif
54#include <asm/kexec.h>
55
56#ifdef CONFIG_PPC64 /* XXX */
57#define _IO_BASE pci_io_base
58#endif
59
60#ifdef CONFIG_DEBUGGER
61int (*__debugger)(struct pt_regs *regs);
62int (*__debugger_ipi)(struct pt_regs *regs);
63int (*__debugger_bpt)(struct pt_regs *regs);
64int (*__debugger_sstep)(struct pt_regs *regs);
65int (*__debugger_iabr_match)(struct pt_regs *regs);
66int (*__debugger_dabr_match)(struct pt_regs *regs);
67int (*__debugger_fault_handler)(struct pt_regs *regs);

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236 * table.
237 * Note that the 601 only takes a machine check on TEA
238 * (transfer error ack) signal assertion, and does not
239 * set any of the top 16 bits of SRR1.
240 * -- paulus.
241 */
242static inline int check_io_access(struct pt_regs *regs)
243{
56#ifdef CONFIG_DEBUGGER
57int (*__debugger)(struct pt_regs *regs);
58int (*__debugger_ipi)(struct pt_regs *regs);
59int (*__debugger_bpt)(struct pt_regs *regs);
60int (*__debugger_sstep)(struct pt_regs *regs);
61int (*__debugger_iabr_match)(struct pt_regs *regs);
62int (*__debugger_dabr_match)(struct pt_regs *regs);
63int (*__debugger_fault_handler)(struct pt_regs *regs);

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232 * table.
233 * Note that the 601 only takes a machine check on TEA
234 * (transfer error ack) signal assertion, and does not
235 * set any of the top 16 bits of SRR1.
236 * -- paulus.
237 */
238static inline int check_io_access(struct pt_regs *regs)
239{
244#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
240#ifdef CONFIG_PPC32
245 unsigned long msr = regs->msr;
246 const struct exception_table_entry *entry;
247 unsigned int *nip = (unsigned int *)regs->nip;
248
249 if (((msr & 0xffff0000) == 0 || (msr & (0x80000 | 0x40000)))
250 && (entry = search_exception_tables(regs->nip)) != NULL) {
251 /*
252 * Check that it's a sync instruction, or somewhere

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269 printk(KERN_DEBUG "%s bad port %lx at %p\n",
270 (*nip & 0x100)? "OUT to": "IN from",
271 regs->gpr[rb] - _IO_BASE, nip);
272 regs->msr |= MSR_RI;
273 regs->nip = entry->fixup;
274 return 1;
275 }
276 }
241 unsigned long msr = regs->msr;
242 const struct exception_table_entry *entry;
243 unsigned int *nip = (unsigned int *)regs->nip;
244
245 if (((msr & 0xffff0000) == 0 || (msr & (0x80000 | 0x40000)))
246 && (entry = search_exception_tables(regs->nip)) != NULL) {
247 /*
248 * Check that it's a sync instruction, or somewhere

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265 printk(KERN_DEBUG "%s bad port %lx at %p\n",
266 (*nip & 0x100)? "OUT to": "IN from",
267 regs->gpr[rb] - _IO_BASE, nip);
268 regs->msr |= MSR_RI;
269 regs->nip = entry->fixup;
270 return 1;
271 }
272 }
277#endif /* CONFIG_PPC_PMAC && CONFIG_PPC32 */
273#endif /* CONFIG_PPC32 */
278 return 0;
279}
280
281#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
282/* On 4xx, the reason for the machine check or program exception
283 is in the ESR. */
284#define get_reason(regs) ((regs)->dsisr)
285#ifndef CONFIG_FSL_BOOKE

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275}
276
277#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
278/* On 4xx, the reason for the machine check or program exception
279 is in the ESR. */
280#define get_reason(regs) ((regs)->dsisr)
281#ifndef CONFIG_FSL_BOOKE

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