kernel/arch/sparc64/src/trap/exception.c

   1 /*
   2  * Copyright (c) 2005 Jakub Jermar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup kernel_sparc64_interrupt
  30  * @{
  31  */
  32 /** @file
  33  *
  34  */
  35
  36 #include <arch/trap/exception.h>
  37 #include <arch/mm/tlb.h>
  38 #include <arch/interrupt.h>
  39 #include <interrupt.h>
  40 #include <arch/asm.h>
  41 #include <arch/register.h>
  42 #include <debug.h>
  43 #include <stdio.h>
  44 #include <symtab.h>
  45
  46 void istate_decode(istate_t *istate)
  47 {
  48         const char *tpcs = symtab_fmt_name_lookup(istate->tpc);
  49         const char *tnpcs = symtab_fmt_name_lookup(istate->tnpc);
  50
  51         printf("TSTATE=%#" PRIx64 "\n", istate->tstate);
  52         printf("TPC=%#" PRIx64 " (%s)\n", istate->tpc, tpcs);
  53         printf("TNPC=%#" PRIx64 " (%s)\n", istate->tnpc, tnpcs);
  54 }
  55
  56 /** Handle instruction_access_exception. (0x8) */
  57 void instruction_access_exception(unsigned int n, istate_t *istate)
  58 {
  59         fault_if_from_uspace(istate, "%s.", __func__);
  60         panic_badtrap(istate, n, "%s.", __func__);
  61 }
  62
  63 /** Handle instruction_access_error. (0xa) */
  64 void instruction_access_error(unsigned int n, istate_t *istate)
  65 {
  66         fault_if_from_uspace(istate, "%s.", __func__);
  67         panic_badtrap(istate, n, "%s.", __func__);
  68 }
  69
  70 /** Handle illegal_instruction. (0x10) */
  71 void illegal_instruction(unsigned int n, istate_t *istate)
  72 {
  73         fault_if_from_uspace(istate, "%s.", __func__);
  74         panic_badtrap(istate, n, "%s.", __func__);
  75 }
  76
  77 /** Handle privileged_opcode. (0x11) */
  78 void privileged_opcode(unsigned int n, istate_t *istate)
  79 {
  80         fault_if_from_uspace(istate, "%s.", __func__);
  81         panic_badtrap(istate, n, "%s.", __func__);
  82 }
  83
  84 /** Handle unimplemented_LDD. (0x12) */
  85 void unimplemented_LDD(unsigned int n, istate_t *istate)
  86 {
  87         fault_if_from_uspace(istate, "%s.", __func__);
  88         panic_badtrap(istate, n, "%s.", __func__);
  89 }
  90
  91 /** Handle unimplemented_STD. (0x13) */
  92 void unimplemented_STD(unsigned int n, istate_t *istate)
  93 {
  94         fault_if_from_uspace(istate, "%s.", __func__);
  95         panic_badtrap(istate, n, "%s.", __func__);
  96 }
  97
  98 /** Handle fp_disabled. (0x20) */
  99 void fp_disabled(unsigned int n, istate_t *istate)
 100 {
 101         fprs_reg_t fprs;
 102
 103         fprs.value = fprs_read();
 104         if (!fprs.fef) {
 105                 fprs.fef = true;
 106                 fprs_write(fprs.value);
 107                 return;
 108         }
 109
 110 #ifdef CONFIG_FPU_LAZY
 111         scheduler_fpu_lazy_request();
 112 #else
 113         fault_if_from_uspace(istate, "%s.", __func__);
 114         panic_badtrap(istate, n, "%s.", __func__);
 115 #endif
 116 }
 117
 118 /** Handle fp_exception_ieee_754. (0x21) */
 119 void fp_exception_ieee_754(unsigned int n, istate_t *istate)
 120 {
 121         fault_if_from_uspace(istate, "%s.", __func__);
 122         panic_badtrap(istate, n, "%s.", __func__);
 123 }
 124
 125 /** Handle fp_exception_other. (0x22) */
 126 void fp_exception_other(unsigned int n, istate_t *istate)
 127 {
 128         fault_if_from_uspace(istate, "%s.", __func__);
 129         panic_badtrap(istate, n, "%s.", __func__);
 130 }
 131
 132 /** Handle tag_overflow. (0x23) */
 133 void tag_overflow(unsigned int n, istate_t *istate)
 134 {
 135         fault_if_from_uspace(istate, "%s.", __func__);
 136         panic_badtrap(istate, n, "%s.", __func__);
 137 }
 138
 139 /** Handle division_by_zero. (0x28) */
 140 void division_by_zero(unsigned int n, istate_t *istate)
 141 {
 142         fault_if_from_uspace(istate, "%s.", __func__);
 143         panic_badtrap(istate, n, "%s.", __func__);
 144 }
 145
 146 /** Handle data_access_exception. (0x30) */
 147 void data_access_exception(unsigned int n, istate_t *istate)
 148 {
 149         fault_if_from_uspace(istate, "%s.", __func__);
 150         panic_badtrap(istate, n, "%s.", __func__);
 151 }
 152
 153 /** Handle data_access_error. (0x32) */
 154 void data_access_error(unsigned int n, istate_t *istate)
 155 {
 156         fault_if_from_uspace(istate, "%s.", __func__);
 157         panic_badtrap(istate, n, "%s.", __func__);
 158 }
 159
 160 /** Handle mem_address_not_aligned. (0x34) */
 161 void mem_address_not_aligned(unsigned int n, istate_t *istate)
 162 {
 163         fault_if_from_uspace(istate, "%s.", __func__);
 164         panic_badtrap(istate, n, "%s.", __func__);
 165 }
 166
 167 /** Handle LDDF_mem_address_not_aligned. (0x35) */
 168 void LDDF_mem_address_not_aligned(unsigned int n, istate_t *istate)
 169 {
 170         fault_if_from_uspace(istate, "%s.", __func__);
 171         panic_badtrap(istate, n, "%s.", __func__);
 172 }
 173
 174 /** Handle STDF_mem_address_not_aligned. (0x36) */
 175 void STDF_mem_address_not_aligned(unsigned int n, istate_t *istate)
 176 {
 177         fault_if_from_uspace(istate, "%s.", __func__);
 178         panic_badtrap(istate, n, "%s.", __func__);
 179 }
 180
 181 /** Handle privileged_action. (0x37) */
 182 void privileged_action(unsigned int n, istate_t *istate)
 183 {
 184         fault_if_from_uspace(istate, "%s.", __func__);
 185         panic_badtrap(istate, n, "%s.", __func__);
 186 }
 187
 188 /** Handle LDQF_mem_address_not_aligned. (0x38) */
 189 void LDQF_mem_address_not_aligned(unsigned int n, istate_t *istate)
 190 {
 191         fault_if_from_uspace(istate, "%s.", __func__);
 192         panic_badtrap(istate, n, "%s.", __func__);
 193 }
 194
 195 /** Handle STQF_mem_address_not_aligned. (0x39) */
 196 void STQF_mem_address_not_aligned(unsigned int n, istate_t *istate)
 197 {
 198         fault_if_from_uspace(istate, "%s.", __func__);
 199         panic_badtrap(istate, n, "%s.", __func__);
 200 }
 201
 202 /** @}
 203  */