You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
144 lines
3.8 KiB
144 lines
3.8 KiB
/*
|
|
* vectors.c
|
|
*
|
|
* Copyright (C) 1993, 1994 by Hamish Macdonald
|
|
*
|
|
* 68040 fixes by Michael Rausch
|
|
* 68040 fixes by Martin Apel
|
|
* 68040 fixes and writeback by Richard Zidlicky
|
|
* 68060 fixes by Roman Hodek
|
|
* 68060 fixes by Jesper Skov
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
/*
|
|
* Sets up all exception vectors
|
|
*/
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/linkage.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kallsyms.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/fpu.h>
|
|
#include <asm/traps.h>
|
|
|
|
/* assembler routines */
|
|
asmlinkage void system_call(void);
|
|
asmlinkage void buserr(void);
|
|
asmlinkage void trap(void);
|
|
asmlinkage void nmihandler(void);
|
|
#ifdef CONFIG_M68KFPU_EMU
|
|
asmlinkage void fpu_emu(void);
|
|
#endif
|
|
|
|
e_vector vectors[256];
|
|
|
|
/* nmi handler for the Amiga */
|
|
asm(".text\n"
|
|
__ALIGN_STR "\n"
|
|
"nmihandler: rte");
|
|
|
|
/*
|
|
* this must be called very early as the kernel might
|
|
* use some instruction that are emulated on the 060
|
|
* and so we're prepared for early probe attempts (e.g. nf_init).
|
|
*/
|
|
void __init base_trap_init(void)
|
|
{
|
|
if (MACH_IS_SUN3X) {
|
|
extern e_vector *sun3x_prom_vbr;
|
|
|
|
__asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
|
|
}
|
|
|
|
/* setup the exception vector table */
|
|
__asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors));
|
|
|
|
if (CPU_IS_060) {
|
|
/* set up ISP entry points */
|
|
asmlinkage void unimp_vec(void) asm ("_060_isp_unimp");
|
|
|
|
vectors[VEC_UNIMPII] = unimp_vec;
|
|
}
|
|
|
|
vectors[VEC_BUSERR] = buserr;
|
|
vectors[VEC_ILLEGAL] = trap;
|
|
vectors[VEC_SYS] = system_call;
|
|
}
|
|
|
|
void __init trap_init (void)
|
|
{
|
|
int 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 = VEC_USER; i < 256; i++)
|
|
vectors[i] = bad_inthandler;
|
|
|
|
#ifdef CONFIG_M68KFPU_EMU
|
|
if (FPU_IS_EMU)
|
|
vectors[VEC_LINE11] = fpu_emu;
|
|
#endif
|
|
|
|
if (CPU_IS_040 && !FPU_IS_EMU) {
|
|
/* set up FPSP entry points */
|
|
asmlinkage void dz_vec(void) asm ("dz");
|
|
asmlinkage void inex_vec(void) asm ("inex");
|
|
asmlinkage void ovfl_vec(void) asm ("ovfl");
|
|
asmlinkage void unfl_vec(void) asm ("unfl");
|
|
asmlinkage void snan_vec(void) asm ("snan");
|
|
asmlinkage void operr_vec(void) asm ("operr");
|
|
asmlinkage void bsun_vec(void) asm ("bsun");
|
|
asmlinkage void fline_vec(void) asm ("fline");
|
|
asmlinkage void unsupp_vec(void) asm ("unsupp");
|
|
|
|
vectors[VEC_FPDIVZ] = dz_vec;
|
|
vectors[VEC_FPIR] = inex_vec;
|
|
vectors[VEC_FPOVER] = ovfl_vec;
|
|
vectors[VEC_FPUNDER] = unfl_vec;
|
|
vectors[VEC_FPNAN] = snan_vec;
|
|
vectors[VEC_FPOE] = operr_vec;
|
|
vectors[VEC_FPBRUC] = bsun_vec;
|
|
vectors[VEC_LINE11] = fline_vec;
|
|
vectors[VEC_FPUNSUP] = unsupp_vec;
|
|
}
|
|
|
|
if (CPU_IS_060 && !FPU_IS_EMU) {
|
|
/* set up IFPSP entry points */
|
|
asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan");
|
|
asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr");
|
|
asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl");
|
|
asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl");
|
|
asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz");
|
|
asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex");
|
|
asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline");
|
|
asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp");
|
|
asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd");
|
|
|
|
vectors[VEC_FPNAN] = snan_vec6;
|
|
vectors[VEC_FPOE] = operr_vec6;
|
|
vectors[VEC_FPOVER] = ovfl_vec6;
|
|
vectors[VEC_FPUNDER] = unfl_vec6;
|
|
vectors[VEC_FPDIVZ] = dz_vec6;
|
|
vectors[VEC_FPIR] = inex_vec6;
|
|
vectors[VEC_LINE11] = fline_vec6;
|
|
vectors[VEC_FPUNSUP] = unsupp_vec6;
|
|
vectors[VEC_UNIMPEA] = effadd_vec6;
|
|
}
|
|
|
|
/* if running on an amiga, make the NMI interrupt do nothing */
|
|
if (MACH_IS_AMIGA) {
|
|
vectors[VEC_INT7] = nmihandler;
|
|
}
|
|
}
|
|
|
|
|