c9034c3a1d
Disintegrate asm/system.h for M32R. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-m32r@ml.linux-m32r.org
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/*
|
|
* linux/arch/m32r/mm/fault.c
|
|
*
|
|
* Copyright (c) 2001, 2002 Hitoshi Yamamoto, and H. Kondo
|
|
*
|
|
* Some code taken from i386 version.
|
|
* Copyright (C) 1995 Linus Torvalds
|
|
*/
|
|
|
|
#include <linux/signal.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/string.h>
|
|
#include <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/mman.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/vt_kern.h> /* For unblank_screen() */
|
|
|
|
#include <asm/m32r.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/pgalloc.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/hardirq.h>
|
|
#include <asm/mmu_context.h>
|
|
|
|
extern void die(const char *, struct pt_regs *, long);
|
|
|
|
#ifndef CONFIG_SMP
|
|
asmlinkage unsigned int tlb_entry_i_dat;
|
|
asmlinkage unsigned int tlb_entry_d_dat;
|
|
#define tlb_entry_i tlb_entry_i_dat
|
|
#define tlb_entry_d tlb_entry_d_dat
|
|
#else
|
|
unsigned int tlb_entry_i_dat[NR_CPUS];
|
|
unsigned int tlb_entry_d_dat[NR_CPUS];
|
|
#define tlb_entry_i tlb_entry_i_dat[smp_processor_id()]
|
|
#define tlb_entry_d tlb_entry_d_dat[smp_processor_id()]
|
|
#endif
|
|
|
|
void do_BUG(const char *file, int line)
|
|
{
|
|
bust_spinlocks(1);
|
|
printk("kernel BUG at %s:%d!\n", file, line);
|
|
}
|
|
|
|
/*======================================================================*
|
|
* do_page_fault()
|
|
*======================================================================*
|
|
* This routine handles page faults. It determines the address,
|
|
* and the problem, and then passes it off to one of the appropriate
|
|
* routines.
|
|
*
|
|
* ARGUMENT:
|
|
* regs : M32R SP reg.
|
|
* error_code : See below
|
|
* address : M32R MMU MDEVA reg. (Operand ACE)
|
|
* : M32R BPC reg. (Instruction ACE)
|
|
*
|
|
* error_code :
|
|
* bit 0 == 0 means no page found, 1 means protection fault
|
|
* bit 1 == 0 means read, 1 means write
|
|
* bit 2 == 0 means kernel, 1 means user-mode
|
|
*======================================================================*/
|
|
asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
|
|
unsigned long address)
|
|
{
|
|
|
|
/*
|
|
* Oops. The kernel tried to access some bad page. We'll have to
|
|
* terminate things with extreme prejudice.
|
|
*/
|
|
|
|
bust_spinlocks(1);
|
|
|
|
if (address < PAGE_SIZE)
|
|
printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");
|
|
else
|
|
printk(KERN_ALERT "Unable to handle kernel paging request");
|
|
printk(" at virtual address %08lx\n",address);
|
|
printk(" printing bpc:\n");
|
|
printk(KERN_ALERT "bpc = %08lx\n", regs->bpc);
|
|
|
|
die("Oops", regs, error_code);
|
|
bust_spinlocks(0);
|
|
do_exit(SIGKILL);
|
|
}
|
|
|
|
/*======================================================================*
|
|
* update_mmu_cache()
|
|
*======================================================================*/
|
|
void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
|
|
pte_t *ptep)
|
|
{
|
|
BUG();
|
|
}
|
|
|
|
/*======================================================================*
|
|
* flush_tlb_page() : flushes one page
|
|
*======================================================================*/
|
|
void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
|
|
{
|
|
BUG();
|
|
}
|
|
|
|
/*======================================================================*
|
|
* flush_tlb_range() : flushes a range of pages
|
|
*======================================================================*/
|
|
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
BUG();
|
|
}
|
|
|
|
/*======================================================================*
|
|
* flush_tlb_mm() : flushes the specified mm context TLB's
|
|
*======================================================================*/
|
|
void local_flush_tlb_mm(struct mm_struct *mm)
|
|
{
|
|
BUG();
|
|
}
|
|
|
|
/*======================================================================*
|
|
* flush_tlb_all() : flushes all processes TLBs
|
|
*======================================================================*/
|
|
void local_flush_tlb_all(void)
|
|
{
|
|
BUG();
|
|
}
|