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c906108c SS |
1 | #include <stdio.h> |
2 | #include <ctype.h> | |
3 | #include "ansidecl.h" | |
3c25f8c7 | 4 | #include "gdb/callback.h" |
c906108c SS |
5 | #include "opcode/mn10300.h" |
6 | #include <limits.h> | |
3c25f8c7 | 7 | #include "gdb/remote-sim.h" |
c906108c | 8 | #include "bfd.h" |
c76b4bab | 9 | #include "sim-fpu.h" |
c906108c | 10 | |
c906108c SS |
11 | extern host_callback *mn10300_callback; |
12 | extern SIM_DESC simulator; | |
13 | ||
14 | #define DEBUG_TRACE 0x00000001 | |
15 | #define DEBUG_VALUES 0x00000002 | |
16 | ||
17 | extern int mn10300_debug; | |
18 | ||
b0e4c8a5 MF |
19 | typedef unsigned8 uint8; |
20 | typedef signed8 int8; | |
21 | typedef unsigned16 uint16; | |
22 | typedef signed16 int16; | |
23 | typedef unsigned32 uint32; | |
24 | typedef signed32 int32; | |
c906108c | 25 | |
c76b4bab AO |
26 | typedef struct |
27 | { | |
28 | uint32 low, high; | |
29 | } dword; | |
c906108c SS |
30 | typedef uint32 reg_t; |
31 | ||
32 | struct simops | |
33 | { | |
34 | long opcode; | |
35 | long mask; | |
36 | void (*func)(); | |
37 | int length; | |
38 | int format; | |
39 | int numops; | |
40 | int operands[16]; | |
41 | }; | |
42 | ||
43 | /* The current state of the processor; registers, memory, etc. */ | |
44 | ||
45 | struct _state | |
46 | { | |
47 | reg_t regs[32]; /* registers, d0-d3, a0-a3, sp, pc, mdr, psw, | |
48 | lir, lar, mdrq, plus some room for processor | |
49 | specific regs. */ | |
c76b4bab AO |
50 | union |
51 | { | |
52 | reg_t fs[32]; /* FS0-31 */ | |
53 | dword fd[16]; /* FD0,2,...,30 */ | |
54 | } fpregs; | |
c906108c SS |
55 | uint8 *mem; /* main memory */ |
56 | int exception; | |
57 | int exited; | |
58 | ||
59 | /* All internal state modified by signal_exception() that may need to be | |
60 | rolled back for passing moment-of-exception image back to gdb. */ | |
61 | reg_t exc_trigger_regs[32]; | |
62 | reg_t exc_suspend_regs[32]; | |
63 | int exc_suspended; | |
64 | ||
65 | #define SIM_CPU_EXCEPTION_TRIGGER(SD,CPU,CIA) mn10300_cpu_exception_trigger(SD,CPU,CIA) | |
66 | #define SIM_CPU_EXCEPTION_SUSPEND(SD,CPU,EXC) mn10300_cpu_exception_suspend(SD,CPU,EXC) | |
67 | #define SIM_CPU_EXCEPTION_RESUME(SD,CPU,EXC) mn10300_cpu_exception_resume(SD,CPU,EXC) | |
68 | }; | |
69 | ||
70 | extern struct _state State; | |
71 | extern uint32 OP[4]; | |
72 | extern struct simops Simops[]; | |
73 | ||
74 | #define PC (State.regs[REG_PC]) | |
75 | #define SP (State.regs[REG_SP]) | |
76 | ||
77 | #define PSW (State.regs[11]) | |
78 | #define PSW_Z 0x1 | |
79 | #define PSW_N 0x2 | |
80 | #define PSW_C 0x4 | |
81 | #define PSW_V 0x8 | |
82 | #define PSW_IE LSBIT (11) | |
83 | #define PSW_LM LSMASK (10, 8) | |
84 | ||
85 | #define EXTRACT_PSW_LM LSEXTRACTED16 (PSW, 10, 8) | |
86 | #define INSERT_PSW_LM(l) LSINSERTED16 ((l), 10, 8) | |
87 | ||
88 | #define REG_D0 0 | |
89 | #define REG_A0 4 | |
90 | #define REG_SP 8 | |
91 | #define REG_PC 9 | |
92 | #define REG_MDR 10 | |
93 | #define REG_PSW 11 | |
94 | #define REG_LIR 12 | |
95 | #define REG_LAR 13 | |
96 | #define REG_MDRQ 14 | |
c2d11a7d JM |
97 | #define REG_E0 15 |
98 | #define REG_SSP 23 | |
99 | #define REG_MSP 24 | |
100 | #define REG_USP 25 | |
101 | #define REG_MCRH 26 | |
102 | #define REG_MCRL 27 | |
103 | #define REG_MCVF 28 | |
c906108c | 104 | |
c76b4bab AO |
105 | #define REG_FPCR 29 |
106 | ||
107 | #define FPCR (State.regs[REG_FPCR]) | |
108 | ||
109 | #define FCC_MASK LSMASK (21, 18) | |
110 | #define RM_MASK LSMASK (17, 16) /* Must always be zero. */ | |
111 | #define EC_MASK LSMASK (14, 10) | |
112 | #define EE_MASK LSMASK ( 9, 5) | |
113 | #define EF_MASK LSMASK ( 4, 0) | |
114 | #define FPCR_MASK (FCC_MASK | EC_MASK | EE_MASK | EF_MASK) | |
115 | ||
116 | #define FCC_L LSBIT (21) | |
117 | #define FCC_G LSBIT (20) | |
118 | #define FCC_E LSBIT (19) | |
119 | #define FCC_U LSBIT (18) | |
120 | ||
121 | #define EC_V LSBIT (14) | |
122 | #define EC_Z LSBIT (13) | |
123 | #define EC_O LSBIT (12) | |
124 | #define EC_U LSBIT (11) | |
125 | #define EC_I LSBIT (10) | |
126 | ||
127 | #define EE_V LSBIT (9) | |
128 | #define EE_Z LSBIT (8) | |
129 | #define EE_O LSBIT (7) | |
130 | #define EE_U LSBIT (6) | |
131 | #define EE_I LSBIT (5) | |
132 | ||
133 | #define EF_V LSBIT (4) | |
134 | #define EF_Z LSBIT (3) | |
135 | #define EF_O LSBIT (2) | |
136 | #define EF_U LSBIT (1) | |
137 | #define EF_I LSBIT (0) | |
138 | ||
139 | #define PSW_FE LSBIT(20) | |
140 | #define FPU_DISABLED !(PSW & PSW_FE) | |
141 | ||
142 | #define XS2FS(X,S) State.fpregs.fs[((X<<4)|(S))] | |
143 | #define AS2FS(A,S) State.fpregs.fs[((A<<2)|(S))] | |
144 | #define Xf2FD(X,f) State.fpregs.fd[((X<<3)|(f))] | |
145 | ||
146 | #define FS2FPU(FS,F) sim_fpu_32to (&(F), (FS)) | |
147 | #define FD2FPU(FD,F) sim_fpu_232to (&(F), ((FD).high), ((FD).low)) | |
148 | #define FPU2FS(F,FS) sim_fpu_to32 (&(FS), &(F)) | |
149 | #define FPU2FD(F,FD) sim_fpu_to232 (&((FD).high), &((FD).low), &(F)) | |
150 | ||
c906108c SS |
151 | #ifdef _WIN32 |
152 | #define SIGTRAP 5 | |
153 | #define SIGQUIT 3 | |
154 | #endif | |
155 | ||
c906108c SS |
156 | #define FETCH32(a,b,c,d) \ |
157 | ((a)+((b)<<8)+((c)<<16)+((d)<<24)) | |
158 | ||
159 | #define FETCH24(a,b,c) \ | |
160 | ((a)+((b)<<8)+((c)<<16)) | |
161 | ||
162 | #define FETCH16(a,b) ((a)+((b)<<8)) | |
163 | ||
164 | #define load_byte(ADDR) \ | |
165 | sim_core_read_unaligned_1 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) | |
166 | ||
167 | #define load_half(ADDR) \ | |
168 | sim_core_read_unaligned_2 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) | |
169 | ||
170 | #define load_word(ADDR) \ | |
171 | sim_core_read_unaligned_4 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) | |
172 | ||
c76b4bab AO |
173 | #define load_dword(ADDR) \ |
174 | u642dw (sim_core_read_unaligned_8 (STATE_CPU (simulator, 0), \ | |
175 | PC, read_map, (ADDR))) | |
176 | ||
177 | static INLINE dword | |
178 | u642dw (unsigned64 dw) | |
179 | { | |
180 | dword r; | |
181 | ||
182 | r.low = (unsigned32)dw; | |
183 | r.high = (unsigned32)(dw >> 32); | |
184 | return r; | |
185 | } | |
186 | ||
c906108c SS |
187 | #define store_byte(ADDR, DATA) \ |
188 | sim_core_write_unaligned_1 (STATE_CPU (simulator, 0), \ | |
189 | PC, write_map, (ADDR), (DATA)) | |
190 | ||
191 | ||
192 | #define store_half(ADDR, DATA) \ | |
193 | sim_core_write_unaligned_2 (STATE_CPU (simulator, 0), \ | |
194 | PC, write_map, (ADDR), (DATA)) | |
195 | ||
196 | ||
197 | #define store_word(ADDR, DATA) \ | |
198 | sim_core_write_unaligned_4 (STATE_CPU (simulator, 0), \ | |
199 | PC, write_map, (ADDR), (DATA)) | |
c76b4bab AO |
200 | #define store_dword(ADDR, DATA) \ |
201 | sim_core_write_unaligned_8 (STATE_CPU (simulator, 0), \ | |
202 | PC, write_map, (ADDR), dw2u64 (DATA)) | |
203 | ||
204 | static INLINE unsigned64 | |
205 | dw2u64 (dword data) | |
206 | { | |
207 | return data.low | (((unsigned64)data.high) << 32); | |
208 | } | |
c906108c SS |
209 | |
210 | /* Function declarations. */ | |
211 | ||
489503ee AO |
212 | uint32 get_word (uint8 *); |
213 | uint16 get_half (uint8 *); | |
214 | uint8 get_byte (uint8 *); | |
215 | void put_word (uint8 *, uint32); | |
216 | void put_half (uint8 *, uint16); | |
217 | void put_byte (uint8 *, uint8); | |
218 | ||
219 | extern uint8 *map (SIM_ADDR addr); | |
220 | ||
221 | INLINE_SIM_MAIN (void) genericAdd (unsigned32 source, unsigned32 destReg); | |
222 | INLINE_SIM_MAIN (void) genericSub (unsigned32 source, unsigned32 destReg); | |
223 | INLINE_SIM_MAIN (void) genericCmp (unsigned32 leftOpnd, unsigned32 rightOpnd); | |
224 | INLINE_SIM_MAIN (void) genericOr (unsigned32 source, unsigned32 destReg); | |
225 | INLINE_SIM_MAIN (void) genericXor (unsigned32 source, unsigned32 destReg); | |
226 | INLINE_SIM_MAIN (void) genericBtst (unsigned32 leftOpnd, unsigned32 rightOpnd); | |
227 | INLINE_SIM_MAIN (int) syscall_read_mem (host_callback *cb, | |
228 | struct cb_syscall *sc, | |
229 | unsigned long taddr, | |
230 | char *buf, | |
231 | int bytes); | |
232 | INLINE_SIM_MAIN (int) syscall_write_mem (host_callback *cb, | |
233 | struct cb_syscall *sc, | |
234 | unsigned long taddr, | |
235 | const char *buf, | |
236 | int bytes); | |
237 | INLINE_SIM_MAIN (void) do_syscall (void); | |
c906108c SS |
238 | void program_interrupt (SIM_DESC sd, sim_cpu *cpu, sim_cia cia, SIM_SIGNAL sig); |
239 | ||
240 | void mn10300_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word pc); | |
241 | void mn10300_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception); | |
242 | void mn10300_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception); | |
c76b4bab AO |
243 | |
244 | void fpu_disabled_exception (SIM_DESC, sim_cpu *, address_word); | |
245 | void fpu_unimp_exception (SIM_DESC, sim_cpu *, address_word); | |
246 | void fpu_check_signal_exception (SIM_DESC, sim_cpu *, address_word); | |
247 | ||
248 | extern const struct fp_prec_t | |
249 | { | |
250 | void (* reg2val) (const void *, sim_fpu *); | |
251 | int (* round) (sim_fpu *); | |
252 | void (* val2reg) (const sim_fpu *, void *); | |
253 | } fp_single_prec, fp_double_prec; | |
254 | ||
255 | #define FP_SINGLE (&fp_single_prec) | |
256 | #define FP_DOUBLE (&fp_double_prec) | |
257 | ||
258 | void fpu_rsqrt (SIM_DESC, sim_cpu *, address_word, const void *, void *, const struct fp_prec_t *); | |
259 | void fpu_sqrt (SIM_DESC, sim_cpu *, address_word, const void *, void *, const struct fp_prec_t *); | |
260 | void fpu_cmp (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const struct fp_prec_t *); | |
261 | void fpu_add (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); | |
262 | void fpu_sub (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); | |
263 | void fpu_mul (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); | |
264 | void fpu_div (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); | |
265 | void fpu_fmadd (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); | |
266 | void fpu_fmsub (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); | |
267 | void fpu_fnmadd (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); | |
268 | void fpu_fnmsub (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); |