NJU-ProjectN/nemu ics2023 initialized
NJU-ProjectN/nemu eb63cf3568dbf4e0c3c6ef462e6ec685550fabbc Merge pull request #76 from rijuyuezhu/master
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29
nemu/include/cpu/cpu.h
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29
nemu/include/cpu/cpu.h
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/***************************************************************************************
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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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#ifndef __CPU_CPU_H__
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#define __CPU_CPU_H__
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#include <common.h>
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void cpu_exec(uint64_t n);
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void set_nemu_state(int state, vaddr_t pc, int halt_ret);
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void invalid_inst(vaddr_t thispc);
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#define NEMUTRAP(thispc, code) set_nemu_state(NEMU_END, thispc, code)
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#define INV(thispc) invalid_inst(thispc)
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#endif
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102
nemu/include/cpu/decode.h
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nemu/include/cpu/decode.h
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/***************************************************************************************
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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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#ifndef __CPU_DECODE_H__
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#define __CPU_DECODE_H__
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#include <isa.h>
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typedef struct Decode {
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vaddr_t pc;
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vaddr_t snpc; // static next pc
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vaddr_t dnpc; // dynamic next pc
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ISADecodeInfo isa;
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IFDEF(CONFIG_ITRACE, char logbuf[128]);
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} Decode;
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// --- pattern matching mechanism ---
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__attribute__((always_inline))
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static inline void pattern_decode(const char *str, int len,
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uint64_t *key, uint64_t *mask, uint64_t *shift) {
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uint64_t __key = 0, __mask = 0, __shift = 0;
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#define macro(i) \
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if ((i) >= len) goto finish; \
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else { \
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char c = str[i]; \
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if (c != ' ') { \
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Assert(c == '0' || c == '1' || c == '?', \
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"invalid character '%c' in pattern string", c); \
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__key = (__key << 1) | (c == '1' ? 1 : 0); \
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__mask = (__mask << 1) | (c == '?' ? 0 : 1); \
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__shift = (c == '?' ? __shift + 1 : 0); \
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} \
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}
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#define macro2(i) macro(i); macro((i) + 1)
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#define macro4(i) macro2(i); macro2((i) + 2)
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#define macro8(i) macro4(i); macro4((i) + 4)
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#define macro16(i) macro8(i); macro8((i) + 8)
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#define macro32(i) macro16(i); macro16((i) + 16)
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#define macro64(i) macro32(i); macro32((i) + 32)
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macro64(0);
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panic("pattern too long");
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#undef macro
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finish:
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*key = __key >> __shift;
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*mask = __mask >> __shift;
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*shift = __shift;
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}
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__attribute__((always_inline))
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static inline void pattern_decode_hex(const char *str, int len,
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uint64_t *key, uint64_t *mask, uint64_t *shift) {
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uint64_t __key = 0, __mask = 0, __shift = 0;
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#define macro(i) \
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if ((i) >= len) goto finish; \
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else { \
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char c = str[i]; \
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if (c != ' ') { \
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Assert((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || c == '?', \
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"invalid character '%c' in pattern string", c); \
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__key = (__key << 4) | (c == '?' ? 0 : (c >= '0' && c <= '9') ? c - '0' : c - 'a' + 10); \
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__mask = (__mask << 4) | (c == '?' ? 0 : 0xf); \
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__shift = (c == '?' ? __shift + 4 : 0); \
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} \
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}
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macro16(0);
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panic("pattern too long");
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#undef macro
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finish:
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*key = __key >> __shift;
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*mask = __mask >> __shift;
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*shift = __shift;
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}
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// --- pattern matching wrappers for decode ---
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#define INSTPAT(pattern, ...) do { \
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uint64_t key, mask, shift; \
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pattern_decode(pattern, STRLEN(pattern), &key, &mask, &shift); \
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if ((((uint64_t)INSTPAT_INST(s) >> shift) & mask) == key) { \
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INSTPAT_MATCH(s, ##__VA_ARGS__); \
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goto *(__instpat_end); \
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} \
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} while (0)
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#define INSTPAT_START(name) { const void ** __instpat_end = &&concat(__instpat_end_, name);
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#define INSTPAT_END(name) concat(__instpat_end_, name): ; }
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#endif
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53
nemu/include/cpu/difftest.h
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53
nemu/include/cpu/difftest.h
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/***************************************************************************************
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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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#ifndef __CPU_DIFFTEST_H__
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#define __CPU_DIFFTEST_H__
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#include <common.h>
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#include <difftest-def.h>
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#ifdef CONFIG_DIFFTEST
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void difftest_skip_ref();
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void difftest_skip_dut(int nr_ref, int nr_dut);
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void difftest_set_patch(void (*fn)(void *arg), void *arg);
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void difftest_step(vaddr_t pc, vaddr_t npc);
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void difftest_detach();
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void difftest_attach();
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#else
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static inline void difftest_skip_ref() {}
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static inline void difftest_skip_dut(int nr_ref, int nr_dut) {}
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static inline void difftest_set_patch(void (*fn)(void *arg), void *arg) {}
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static inline void difftest_step(vaddr_t pc, vaddr_t npc) {}
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static inline void difftest_detach() {}
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static inline void difftest_attach() {}
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#endif
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extern void (*ref_difftest_memcpy)(paddr_t addr, void *buf, size_t n, bool direction);
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extern void (*ref_difftest_regcpy)(void *dut, bool direction);
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extern void (*ref_difftest_exec)(uint64_t n);
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extern void (*ref_difftest_raise_intr)(uint64_t NO);
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static inline bool difftest_check_reg(const char *name, vaddr_t pc, word_t ref, word_t dut) {
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if (ref != dut) {
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Log("%s is different after executing instruction at pc = " FMT_WORD
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", right = " FMT_WORD ", wrong = " FMT_WORD ", diff = " FMT_WORD,
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name, pc, ref, dut, ref ^ dut);
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return false;
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}
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return true;
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}
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#endif
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26
nemu/include/cpu/ifetch.h
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26
nemu/include/cpu/ifetch.h
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@ -0,0 +1,26 @@
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/***************************************************************************************
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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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#ifndef __CPU_IFETCH_H__
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#include <memory/vaddr.h>
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static inline uint32_t inst_fetch(vaddr_t *pc, int len) {
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uint32_t inst = vaddr_ifetch(*pc, len);
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(*pc) += len;
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return inst;
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}
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#endif
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