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Greg Ungerer
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| --- | ||
| refs/heads/master: 61619b12078dc8b85a3d4cbfa16f650daa341bd1 | ||
| refs/heads/master: bc4f4ac2f09a0681b4bd10e698e7f0c6e5137ca0 |
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| /* | ||
| * 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> | ||
|
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||
| #include <asm/setup.h> | ||
| #include <asm/fpu.h> | ||
| #include <asm/system.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 | ||
|
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| e_vector vectors[256]; | ||
|
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| /* nmi handler for the Amiga */ | ||
| asm(".text\n" | ||
| __ALIGN_STR "\n" | ||
| "nmihandler: rte"); | ||
|
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||
| /* | ||
| * 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; | ||
|
|
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| __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr)); | ||
| } | ||
|
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| /* setup the exception vector table */ | ||
| __asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors)); | ||
|
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| if (CPU_IS_060) { | ||
| /* set up ISP entry points */ | ||
| asmlinkage void unimp_vec(void) asm ("_060_isp_unimp"); | ||
|
|
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| vectors[VEC_UNIMPII] = unimp_vec; | ||
| } | ||
|
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| vectors[VEC_BUSERR] = buserr; | ||
| vectors[VEC_ILLEGAL] = trap; | ||
| vectors[VEC_SYS] = system_call; | ||
| } | ||
|
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| void __init trap_init (void) | ||
| { | ||
| int i; | ||
|
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| for (i = VEC_SPUR; i <= VEC_INT7; i++) | ||
| vectors[i] = bad_inthandler; | ||
|
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| for (i = 0; i < VEC_USER; i++) | ||
| if (!vectors[i]) | ||
| vectors[i] = trap; | ||
|
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| for (i = VEC_USER; i < 256; i++) | ||
| vectors[i] = bad_inthandler; | ||
|
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| #ifdef CONFIG_M68KFPU_EMU | ||
| if (FPU_IS_EMU) | ||
| vectors[VEC_LINE11] = fpu_emu; | ||
| #endif | ||
|
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||
| 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"); | ||
|
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||
| 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"); | ||
|
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||
| 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; | ||
| } | ||
| } | ||
|
|