1 /*
2 * debug stuff
3 * (C) notaz, 2006-2008
4 *
5 * This work is licensed under the terms of MAME license.
6 * See COPYING file in the top-level directory.
7 */
8
9 #include "pico_int.h"
10
11 typedef unsigned char u8;
12
13 static unsigned int pppc, ops=0;
14 extern unsigned int lastread_a, lastread_d[16], lastwrite_cyc_d[16], lastwrite_mus_d[16];
15 extern int lrp_cyc, lrp_mus, lwp_cyc, lwp_mus;
16 unsigned int old_regs[16], old_sr, ppop, have_illegal = 0;
17 int dbg_irq_level = 0, dbg_irq_level_sub = 0;
18
19 #undef dprintf
20 #define dprintf(f,...) printf("%05i:%03i: " f "\n",Pico.m.frame_count,Pico.m.scanline,##__VA_ARGS__)
21
22 #if defined(EMU_C68K)
23 static struct Cyclone *currentC68k = NULL;
24 #define other_set_sub(s) currentC68k=(s)?&PicoCpuCS68k:&PicoCpuCM68k;
25 #define other_get_sr() CycloneGetSr(currentC68k)
26 #define other_dar(i) currentC68k->d[i]
27 #define other_osp currentC68k->osp
28 #define other_get_irq() currentC68k->irq
29 #define other_set_irq(i) currentC68k->irq=i
30 #define other_is_stopped() (currentC68k->state_flags&1)
31 #define other_is_tracing() ((currentC68k->state_flags&2)?1:0)
32 #elif defined(EMU_F68K)
33 static struct M68K_CONTEXT *g_m68kcontext;
34 #define other_set_sub(s) g_m68kcontext=(s)?&PicoCpuFS68k:&PicoCpuFM68k;
35 #define other_get_sr() g_m68kcontext->sr
36 #define other_dar(i) ((unsigned int*)g_m68kcontext->dreg)[i]
37 #define other_osp g_m68kcontext->asp
38 #define other_get_irq() g_m68kcontext->interrupts[0]
39 #define other_set_irq(irq) g_m68kcontext->interrupts[0]=irq
40 #define other_is_stopped() ((g_m68kcontext->execinfo&FM68K_HALTED)?1:0)
41 #define other_is_tracing() ((g_m68kcontext->execinfo&FM68K_EMULATE_TRACE)?1:0)
42 #else
43 #error other core missing, don't compile this file
44 #endif
45
otherRun(void)46 static int otherRun(void)
47 {
48 #if defined(EMU_C68K)
49 currentC68k->cycles=1;
50 CycloneRun(currentC68k);
51 return 1-currentC68k->cycles;
52 #elif defined(EMU_F68K)
53 return fm68k_emulate(g_m68kcontext, 1, 0);
54 #endif
55 }
56
57 //static
58 void dumpPCandExit(int is_sub)
59 {
60 char buff[128];
61 int i;
62
63 m68k_disassemble(buff, pppc, M68K_CPU_TYPE_68000);
64 dprintf("PC: %06x: %04x: %s", pppc, ppop, buff);
65 dprintf(" this | prev");
66 for(i=0; i < 8; i++)
67 dprintf("d%i=%08x, a%i=%08x | d%i=%08x, a%i=%08x", i, other_dar(i), i, other_dar(i+8), i, old_regs[i], i, old_regs[i+8]);
68 dprintf("SR: %04x | %04x (??s? 0iii 000x nzvc)", other_get_sr(), old_sr);
69 dprintf("last_read: %08x @ %06x", lastread_d[--lrp_cyc&15], lastread_a);
70 dprintf("ops done: %i, is_sub: %i", ops, is_sub);
71 exit(1);
72 }
73
74 int CM_compareRun(int cyc, int is_sub)
75 {
76 char *str;
77 int cyc_done=0, cyc_other, cyc_musashi, *irq_level, err=0;
78 unsigned int i, pc, mu_sr;
79
80 m68ki_cpu_p=is_sub?&PicoCpuMS68k:&PicoCpuMM68k;
81 other_set_sub(is_sub);
82 lrp_cyc = lrp_mus = 0;
83
84 while (cyc_done < cyc)
85 {
86 if (have_illegal && m68k_read_disassembler_16(m68ki_cpu.pc) != 0x4e73) // not rte
87 {
88 have_illegal = 0;
89 m68ki_cpu.pc += 2;
90 #ifdef EMU_C68K
91 currentC68k->pc=currentC68k->checkpc(currentC68k->pc + 2);
92 #endif
93 }
94 // hacks for test_misc2
95 if (m68ki_cpu.pc == 0x0002e0 && m68k_read_disassembler_16(m68ki_cpu.pc) == 0x4e73)
96 {
97 // get out of "priviledge violation" loop
98 have_illegal = 1;
99 //m68ki_cpu.s_flag = SFLAG_SET;
100 //currentC68k->srh|=0x20;
101 }
102
103 pppc = is_sub ? SekPcS68k : SekPc;
104 ppop = m68k_read_disassembler_16(pppc);
105 memcpy(old_regs, &other_dar(0), 4*16);
106 old_sr = other_get_sr();
107
108 #if 0
109 {
110 char buff[128];
111 dprintf("---");
112 m68k_disassemble(buff, pppc, M68K_CPU_TYPE_68000);
113 dprintf("PC: %06x: %04x: %s", pppc, ppop, buff);
114 //dprintf("A7: %08x", currentC68k->a[7]);
115 }
116 #endif
117
118 irq_level = is_sub ? &dbg_irq_level_sub : &dbg_irq_level;
119 if (*irq_level)
120 {
121 other_set_irq(*irq_level);
122 m68k_set_irq(*irq_level);
123 *irq_level=0;
124 }
125
126 cyc_other=otherRun();
127 // Musashi takes irq even if it hasn't got cycles left, let othercpu do it too
128 if (other_get_irq() && other_get_irq() > ((other_get_sr()>>8)&7))
129 cyc_other+=otherRun();
130 cyc_musashi=m68k_execute(1);
131
132 if (cyc_other != cyc_musashi) {
133 dprintf("cycles: %i vs %i", cyc_other, cyc_musashi);
134 err=1;
135 }
136
137 if (lrp_cyc != lrp_mus) {
138 dprintf("lrp: %i vs %i", lrp_cyc&15, lrp_mus&15);
139 err=1;
140 }
141
142 if (lwp_cyc != lwp_mus) {
143 dprintf("lwp: %i vs %i", lwp_cyc&15, lwp_mus&15);
144 err=1;
145 }
146
147 for (i=0; i < 16; i++) {
148 if (lastwrite_cyc_d[i] != lastwrite_mus_d[i]) {
149 dprintf("lastwrite: [%i]= %08x vs %08x", i, lastwrite_cyc_d[i], lastwrite_mus_d[i]);
150 err=1;
151 break;
152 }
153 }
154
155 // compare PC
156 pc = is_sub ? SekPcS68k : SekPc;
157 m68ki_cpu.pc&=~1;
158 if (pc != m68ki_cpu.pc) {
159 dprintf("PC: %06x vs %06x", pc, m68ki_cpu.pc);
160 err=1;
161 }
162
163 #if 0
164 if( SekPc > Pico.romsize || SekPc < 0x200 ) {
165 dprintf("PC out of bounds: %06x", SekPc);
166 err=1;
167 }
168 #endif
169
170 // compare regs
171 for (i=0; i < 16; i++) {
172 if (other_dar(i) != m68ki_cpu.dar[i]) {
173 str = (i < 8) ? "d" : "a";
174 dprintf("reg: %s%i: %08x vs %08x", str, i&7, other_dar(i), m68ki_cpu.dar[i]);
175 err=1;
176 }
177 }
178
179 // SR
180 if (other_get_sr() != (mu_sr = m68k_get_reg(NULL, M68K_REG_SR))) {
181 dprintf("SR: %04x vs %04x (??s? 0iii 000x nzvc)", other_get_sr(), mu_sr);
182 err=1;
183 }
184
185 // IRQl
186 if (other_get_irq() != (m68ki_cpu.int_level>>8)) {
187 dprintf("IRQ: %i vs %i", other_get_irq(), (m68ki_cpu.int_level>>8));
188 err=1;
189 }
190
191 // OSP/USP
192 if (other_osp != m68ki_cpu.sp[((mu_sr>>11)&4)^4]) {
193 dprintf("OSP: %06x vs %06x", other_osp, m68ki_cpu.sp[((mu_sr>>11)&4)^4]);
194 err=1;
195 }
196
197 // stopped
198 if ((other_is_stopped() && !m68ki_cpu.stopped) || (!other_is_stopped() && m68ki_cpu.stopped)) {
199 dprintf("stopped: %i vs %i", other_is_stopped(), m68ki_cpu.stopped);
200 err=1;
201 }
202
203 // tracing
204 if((other_is_tracing() && !m68ki_tracing) || (!other_is_tracing() && m68ki_tracing)) {
205 dprintf("tracing: %i vs %i", other_is_tracing(), m68ki_tracing);
206 err=1;
207 }
208
209 if(err) dumpPCandExit(is_sub);
210
211 #if 0
212 if (m68ki_cpu.dar[15] < 0x00ff0000 || m68ki_cpu.dar[15] >= 0x01000000)
213 {
214 other_dar(15) = m68ki_cpu.dar[15] = 0xff8000;
215 }
216 #endif
217 #if 0
218 m68k_set_reg(M68K_REG_SR, ((mu_sr-1)&~0x2000)|(mu_sr&0x2000)); // broken
219 CycloneSetSr(currentC68k, ((mu_sr-1)&~0x2000)|(mu_sr&0x2000));
220 currentC68k->stopped = m68ki_cpu.stopped = 0;
221 if(SekPc > 0x400 && (currentC68k->a[7] < 0xff0000 || currentC68k->a[7] > 0xffffff))
222 currentC68k->a[7] = m68ki_cpu.dar[15] = 0xff8000;
223 #endif
224
225 cyc_done += cyc_other;
226 ops++;
227 }
228
229 return cyc_done;
230 }
231