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1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2 | * Mupen64plus - compare_core.h * |
3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
4 | * Copyright (C) 2009 Richard Goedeken * |
5 | * Copyright (C) 2002 Hacktarux * |
6 | * * |
7 | * This program is free software; you can redistribute it and/or modify * |
8 | * it under the terms of the GNU General Public License as published by * |
9 | * the Free Software Foundation; either version 2 of the License, or * |
10 | * (at your option) any later version. * |
11 | * * |
12 | * This program is distributed in the hope that it will be useful, * |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
15 | * GNU General Public License for more details. * |
16 | * * |
17 | * You should have received a copy of the GNU General Public License * |
18 | * along with this program; if not, write to the * |
19 | * Free Software Foundation, Inc., * |
20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
21 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
22 | |
23 | #include <stdio.h> |
24 | #include <string.h> |
25 | #include <sys/stat.h> |
26 | |
27 | #include "m64p_types.h" |
28 | #include "main.h" |
29 | #include "compare_core.h" |
30 | #include "core_interface.h" |
31 | |
32 | /* local variables */ |
33 | |
34 | static FILE *fPipe = NULL; |
35 | static int comp_reg_32[32]; |
36 | static long long comp_reg_64[32]; |
37 | static unsigned int old_op = 0; |
38 | static int l_CoreCompareMode = CORE_COMPARE_DISABLE; |
39 | |
40 | static long long *ptr_reg = NULL; /* pointer to the 64-bit general purpose registers in the core */ |
41 | static int *ptr_cop0 = NULL; /* pointer to the 32-bit Co-processor 0 registers in the core */ |
42 | static long long *ptr_fgr = NULL; /* pointer to the 64-bit floating-point registers in the core */ |
43 | static int *ptr_PC = NULL; /* pointer to 32-bit R4300 Program Counter */ |
44 | |
45 | /* local functions */ |
46 | static void stop_it(void) |
47 | { |
48 | static int errors = 0; |
49 | |
50 | (*CoreDoCommand)(M64CMD_STOP, 0, NULL); |
51 | |
52 | errors++; |
53 | #if !defined(WIN32) |
54 | #if defined(__i386__) || defined(__x86_64__) |
55 | if (errors > 7) |
56 | asm("int $3;"); |
57 | #endif |
58 | #endif |
59 | } |
60 | |
61 | static void display_error(char *txt) |
62 | { |
63 | int i; |
64 | |
65 | printf("err: %6s addr:%x\t ", txt, *ptr_PC); |
66 | |
67 | if (!strcmp(txt, "PC")) |
68 | { |
69 | printf("My PC: %x Ref PC: %x\t ", *ptr_PC, *comp_reg_32); |
70 | } |
71 | else if (!strcmp(txt, "gpr")) |
72 | { |
73 | for (i=0; i<32; i++) |
74 | { |
75 | if (ptr_reg[i] != comp_reg_64[i]) |
76 | printf("My: reg[%d]=%llx\t Ref: reg[%d]=%llx\t ", i, ptr_reg[i], i, comp_reg_64[i]); |
77 | } |
78 | } |
79 | else if (!strcmp(txt, "cop0")) |
80 | { |
81 | for (i=0; i<32; i++) |
82 | { |
83 | if (ptr_cop0[i] != comp_reg_32[i]) |
84 | printf("My: reg_cop0[%d]=%x\t Ref: reg_cop0[%d]=%x\t ", i, (unsigned int)ptr_cop0[i], i, (unsigned int)comp_reg_32[i]); |
85 | } |
86 | } |
87 | else if (!strcmp(txt, "cop1")) |
88 | { |
89 | for (i=0; i<32; i++) |
90 | { |
91 | if (ptr_fgr[i] != comp_reg_64[i]) |
92 | printf("My: reg[%d]=%llx\t Ref: reg[%d]=%llx\t ", i, ptr_fgr[i], i, comp_reg_64[i]); |
93 | } |
94 | } |
95 | printf("\n"); |
96 | /*for (i=0; i<32; i++) |
97 | { |
98 | if (reg_cop0[i] != comp_reg[i]) |
99 | printf("reg_cop0[%d]=%llx != reg[%d]=%llx\n", |
100 | i, reg_cop0[i], i, comp_reg[i]); |
101 | }*/ |
102 | |
103 | stop_it(); |
104 | } |
105 | |
106 | static void compare_core_sync_data(int length, void *value) |
107 | { |
108 | if (l_CoreCompareMode == CORE_COMPARE_RECV) |
109 | { |
110 | if (fread(value, 1, length, fPipe) != length) |
111 | stop_it(); |
112 | } |
113 | else if (l_CoreCompareMode == CORE_COMPARE_SEND) |
114 | { |
115 | if (fwrite(value, 1, length, fPipe) != length) |
116 | stop_it(); |
117 | } |
118 | } |
119 | |
120 | static void compare_core_check(unsigned int cur_opcode) |
121 | { |
122 | static int comparecnt = 0; |
123 | int iFirst = 1; |
124 | char errHead[128]; |
125 | sprintf(errHead, "Compare #%i old_op: %x op: %x\n", comparecnt++, old_op, cur_opcode); |
126 | |
127 | /* get pointer to current R4300 Program Counter address */ |
128 | ptr_PC = (int *) DebugGetCPUDataPtr(M64P_CPU_PC); /* this changes for every instruction */ |
129 | |
130 | if (l_CoreCompareMode == CORE_COMPARE_RECV) |
131 | { |
132 | if (fread(comp_reg_32, sizeof(int), 4, fPipe) != 4) |
133 | printf("compare_core_check: fread() failed"); |
134 | if (*ptr_PC != *comp_reg_32) |
135 | { |
136 | if (iFirst) |
137 | { |
138 | printf("%s", errHead); |
139 | iFirst = 0; |
140 | } |
141 | display_error("PC"); |
142 | } |
143 | if (fread (comp_reg_64, sizeof(long long int), 32, fPipe) != 32) |
144 | printf("compare_core_check: fread() failed"); |
145 | if (memcmp(ptr_reg, comp_reg_64, 32*sizeof(long long int)) != 0) |
146 | { |
147 | if (iFirst) |
148 | { |
149 | printf("%s", errHead); |
150 | iFirst = 0; |
151 | } |
152 | display_error("gpr"); |
153 | } |
154 | if (fread(comp_reg_32, sizeof(int), 32, fPipe) != 32) |
155 | printf("compare_core_check: fread() failed"); |
156 | if (memcmp(ptr_cop0, comp_reg_32, 32*sizeof(int)) != 0) |
157 | { |
158 | if (iFirst) |
159 | { |
160 | printf("%s", errHead); |
161 | iFirst = 0; |
162 | } |
163 | display_error("cop0"); |
164 | } |
165 | if (fread(comp_reg_64, sizeof(long long int), 32, fPipe) != 32) |
166 | printf("compare_core_check: fread() failed"); |
167 | if (memcmp(ptr_fgr, comp_reg_64, 32*sizeof(long long int))) |
168 | { |
169 | if (iFirst) |
170 | { |
171 | printf("%s", errHead); |
172 | iFirst = 0; |
173 | } |
174 | display_error("cop1"); |
175 | } |
176 | /*fread(comp_reg, 1, sizeof(int), f); |
177 | if (memcmp(&rdram[0x31280/4], comp_reg, sizeof(int))) |
178 | display_error("mem");*/ |
179 | /*fread (comp_reg, 4, 1, f); |
180 | if (memcmp(&FCR31, comp_reg, 4)) |
181 | display_error();*/ |
182 | old_op = cur_opcode; |
183 | } |
184 | else if (l_CoreCompareMode == CORE_COMPARE_SEND) |
185 | { |
186 | if (fwrite(ptr_PC, sizeof(int), 4, fPipe) != 4 || |
187 | fwrite(ptr_reg, sizeof(long long int), 32, fPipe) != 32 || |
188 | fwrite(ptr_cop0, sizeof(int), 32, fPipe) != 32 || |
189 | fwrite(ptr_fgr, sizeof(long long int), 32, fPipe) != 32) |
190 | printf("compare_core_check: fwrite() failed"); |
191 | /*fwrite(&rdram[0x31280/4], 1, sizeof(int), f); |
192 | fwrite(&FCR31, 4, 1, f);*/ |
193 | } |
194 | } |
195 | |
196 | /* global functions */ |
197 | void compare_core_init(int mode) |
198 | { |
199 | #if defined(WIN32) |
200 | DebugMessage(M64MSG_VERBOSE, "core comparison feature not supported on Windows platform."); |
201 | return; |
202 | #else |
203 | /* set mode */ |
204 | l_CoreCompareMode = mode; |
205 | /* set callback functions in core */ |
206 | if (DebugSetCoreCompare(compare_core_check, compare_core_sync_data) != M64ERR_SUCCESS) |
207 | { |
208 | l_CoreCompareMode = CORE_COMPARE_DISABLE; |
209 | DebugMessage(M64MSG_WARNING, "DebugSetCoreCompare() failed, core comparison disabled."); |
210 | return; |
211 | } |
212 | /* get pointers to emulated R4300 CPU registers */ |
213 | ptr_reg = (long long *) DebugGetCPUDataPtr(M64P_CPU_REG_REG); |
214 | ptr_cop0 = (int *) DebugGetCPUDataPtr(M64P_CPU_REG_COP0); |
215 | ptr_fgr = (long long *) DebugGetCPUDataPtr(M64P_CPU_REG_COP1_FGR_64); |
216 | /* open file handle to FIFO pipe */ |
217 | if (l_CoreCompareMode == CORE_COMPARE_RECV) |
218 | { |
219 | mkfifo("compare_pipe", 0600); |
220 | DebugMessage(M64MSG_INFO, "Core Comparison Waiting to read pipe."); |
221 | fPipe = fopen("compare_pipe", "r"); |
222 | } |
223 | else if (l_CoreCompareMode == CORE_COMPARE_SEND) |
224 | { |
225 | DebugMessage(M64MSG_INFO, "Core Comparison Waiting to write pipe."); |
226 | fPipe = fopen("compare_pipe", "w"); |
227 | } |
228 | #endif |
229 | } |
230 | |