/*
* 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/cpu.h>
#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>
#include "vectors.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;
}
}
Messung V0.5 in Prozent C=94 H=43 G=72
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