56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
/***************************************************************************************
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* Copyright (c) 2014-2022 Zihao Yu, Nanjing University
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*
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* NEMU is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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*
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* See the Mulan PSL v2 for more details.
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***************************************************************************************/
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#include <cpu/ifetch.h>
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#include <difftest.h>
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#include <isa.h>
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#include <utils.h>
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void set_nemu_state(int state, vaddr_t pc, int halt_ret) {
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nemu_do_difftest = false;
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nemu_state.state = state;
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nemu_state.halt_pc = pc;
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nemu_state.halt_ret = halt_ret;
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}
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__attribute__((noinline)) void invalid_inst(vaddr_t thispc) {
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uint32_t temp[2];
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vaddr_t pc = thispc;
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temp[0] = inst_fetch(&pc, 4);
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temp[1] = inst_fetch(&pc, 4);
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uint8_t *p = (uint8_t *)temp;
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printf("invalid opcode(PC = " FMT_WORD "):\n"
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"\t%02x %02x %02x %02x %02x %02x %02x %02x ...\n"
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"\t%08x %08x...\n",
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thispc, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], temp[0],
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temp[1]);
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printf("There are two cases which will trigger this unexpected exception:\n"
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"1. The instruction at PC = " FMT_WORD " is not implemented.\n"
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"2. Something is implemented incorrectly.\n",
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thispc);
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printf("Find this PC(" FMT_WORD
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") in the disassembling result to distinguish which case it is.\n\n",
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thispc);
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printf(ANSI_FMT("If it is the first case, see\n%s\nfor more details.\n\n"
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"If it is the second case, remember:\n"
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"* The machine is always right!\n"
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"* Every line of untested code is always wrong!\n\n",
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ANSI_FG_RED),
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isa_logo);
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set_nemu_state(NEMU_ABORT, thispc, -1);
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}
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