1 /* m32r2 simulator support code
2 Copyright (C) 1997-2014 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
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 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #define WANT_CPU m32r2f
21 #define WANT_CPU_M32R2F
27 /* The contents of BUF are in target byte order. */
30 m32r2f_fetch_register (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len)
32 return m32rbf_fetch_register (current_cpu, rn, buf, len);
35 /* The contents of BUF are in target byte order. */
38 m32r2f_store_register (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len)
40 return m32rbf_store_register (current_cpu, rn, buf, len);
43 /* Cover fns to get/set the control registers.
44 FIXME: Duplicated from m32r.c. The issue is structure offsets. */
47 m32r2f_h_cr_get_handler (SIM_CPU *current_cpu, UINT cr)
51 case H_CR_PSW : /* PSW. */
52 return (((CPU (h_bpsw) & 0xc1) << 8)
53 | ((CPU (h_psw) & 0xc0) << 0)
55 case H_CR_BBPSW : /* Backup backup psw. */
56 return CPU (h_bbpsw) & 0xc1;
57 case H_CR_CBR : /* Condition bit. */
59 case H_CR_SPI : /* Interrupt stack pointer. */
61 return CPU (h_gr[H_GR_SP]);
63 return CPU (h_cr[H_CR_SPI]);
64 case H_CR_SPU : /* User stack pointer. */
66 return CPU (h_gr[H_GR_SP]);
68 return CPU (h_cr[H_CR_SPU]);
69 case H_CR_BPC : /* Backup pc. */
70 return CPU (h_cr[H_CR_BPC]) & 0xfffffffe;
71 case H_CR_BBPC : /* Backup backup pc. */
72 return CPU (h_cr[H_CR_BBPC]) & 0xfffffffe;
73 case 4 : /* ??? unspecified, but apparently available */
74 case 5 : /* ??? unspecified, but apparently available */
75 return CPU (h_cr[cr]);
82 m32r2f_h_cr_set_handler (SIM_CPU *current_cpu, UINT cr, USI newval)
86 case H_CR_PSW : /* psw */
88 int old_sm = (CPU (h_psw) & 0x80) != 0;
89 int new_sm = (newval & 0x80) != 0;
90 CPU (h_bpsw) = (newval >> 8) & 0xff;
91 CPU (h_psw) = newval & 0xff;
92 SET_H_COND (newval & 1);
93 /* When switching stack modes, update the registers. */
98 /* Switching user -> system. */
99 CPU (h_cr[H_CR_SPU]) = CPU (h_gr[H_GR_SP]);
100 CPU (h_gr[H_GR_SP]) = CPU (h_cr[H_CR_SPI]);
104 /* Switching system -> user. */
105 CPU (h_cr[H_CR_SPI]) = CPU (h_gr[H_GR_SP]);
106 CPU (h_gr[H_GR_SP]) = CPU (h_cr[H_CR_SPU]);
111 case H_CR_BBPSW : /* backup backup psw */
112 CPU (h_bbpsw) = newval & 0xff;
114 case H_CR_CBR : /* condition bit */
115 SET_H_COND (newval & 1);
117 case H_CR_SPI : /* interrupt stack pointer */
119 CPU (h_gr[H_GR_SP]) = newval;
121 CPU (h_cr[H_CR_SPI]) = newval;
123 case H_CR_SPU : /* user stack pointer */
125 CPU (h_gr[H_GR_SP]) = newval;
127 CPU (h_cr[H_CR_SPU]) = newval;
129 case H_CR_BPC : /* backup pc */
130 CPU (h_cr[H_CR_BPC]) = newval;
132 case H_CR_BBPC : /* backup backup pc */
133 CPU (h_cr[H_CR_BBPC]) = newval;
135 case 4 : /* ??? unspecified, but apparently available */
136 case 5 : /* ??? unspecified, but apparently available */
137 CPU (h_cr[cr]) = newval;
145 /* Cover fns to access h-psw. */
148 m32r2f_h_psw_get_handler (SIM_CPU *current_cpu)
150 return (CPU (h_psw) & 0xfe) | (CPU (h_cond) & 1);
154 m32r2f_h_psw_set_handler (SIM_CPU *current_cpu, UQI newval)
156 CPU (h_psw) = newval;
157 CPU (h_cond) = newval & 1;
160 /* Cover fns to access h-accum. */
163 m32r2f_h_accum_get_handler (SIM_CPU *current_cpu)
165 /* Sign extend the top 8 bits. */
167 r = ANDDI (CPU (h_accum), MAKEDI (0xffffff, 0xffffffff));
168 r = XORDI (r, MAKEDI (0x800000, 0));
169 r = SUBDI (r, MAKEDI (0x800000, 0));
174 m32r2f_h_accum_set_handler (SIM_CPU *current_cpu, DI newval)
176 CPU (h_accum) = newval;
179 /* Cover fns to access h-accums. */
182 m32r2f_h_accums_get_handler (SIM_CPU *current_cpu, UINT regno)
184 /* FIXME: Yes, this is just a quick hack. */
189 r = CPU (h_accums[1]);
190 /* Sign extend the top 8 bits. */
191 r = ANDDI (r, MAKEDI (0xffffff, 0xffffffff));
192 r = XORDI (r, MAKEDI (0x800000, 0));
193 r = SUBDI (r, MAKEDI (0x800000, 0));
198 m32r2f_h_accums_set_handler (SIM_CPU *current_cpu, UINT regno, DI newval)
200 /* FIXME: Yes, this is just a quick hack. */
202 CPU (h_accum) = newval;
204 CPU (h_accums[1]) = newval;
207 #if WITH_PROFILE_MODEL_P
209 /* Initialize cycle counting for an insn.
210 FIRST_P is non-zero if this is the first insn in a set of parallel
214 m32r2f_model_insn_before (SIM_CPU *cpu, int first_p)
216 m32rbf_model_insn_before (cpu, first_p);
219 /* Record the cycles computed for an insn.
220 LAST_P is non-zero if this is the last insn in a set of parallel insns,
221 and we update the total cycle count.
222 CYCLES is the cycle count of the insn. */
225 m32r2f_model_insn_after (SIM_CPU *cpu, int last_p, int cycles)
227 m32rbf_model_insn_after (cpu, last_p, cycles);
231 check_load_stall (SIM_CPU *cpu, int regno)
233 UINT h_gr = CPU_M32R_MISC_PROFILE (cpu)->load_regs;
236 && (h_gr & (1 << regno)) != 0)
238 CPU_M32R_MISC_PROFILE (cpu)->load_stall += 2;
239 if (TRACE_INSN_P (cpu))
240 cgen_trace_printf (cpu, " ; Load stall of 2 cycles.");
245 m32r2f_model_m32r2_u_exec (SIM_CPU *cpu, const IDESC *idesc,
246 int unit_num, int referenced,
247 INT sr, INT sr2, INT dr)
249 check_load_stall (cpu, sr);
250 check_load_stall (cpu, sr2);
251 return idesc->timing->units[unit_num].done;
255 m32r2f_model_m32r2_u_cmp (SIM_CPU *cpu, const IDESC *idesc,
256 int unit_num, int referenced,
259 check_load_stall (cpu, src1);
260 check_load_stall (cpu, src2);
261 return idesc->timing->units[unit_num].done;
265 m32r2f_model_m32r2_u_mac (SIM_CPU *cpu, const IDESC *idesc,
266 int unit_num, int referenced,
269 check_load_stall (cpu, src1);
270 check_load_stall (cpu, src2);
271 return idesc->timing->units[unit_num].done;
275 m32r2f_model_m32r2_u_cti (SIM_CPU *cpu, const IDESC *idesc,
276 int unit_num, int referenced,
279 PROFILE_DATA *profile = CPU_PROFILE_DATA (cpu);
280 int taken_p = (referenced & (1 << 1)) != 0;
282 check_load_stall (cpu, sr);
285 CPU_M32R_MISC_PROFILE (cpu)->cti_stall += 2;
286 PROFILE_MODEL_TAKEN_COUNT (profile) += 1;
289 PROFILE_MODEL_UNTAKEN_COUNT (profile) += 1;
290 return idesc->timing->units[unit_num].done;
294 m32r2f_model_m32r2_u_load (SIM_CPU *cpu, const IDESC *idesc,
295 int unit_num, int referenced,
298 CPU_M32R_MISC_PROFILE (cpu)->load_regs_pending |= (1 << dr);
299 return idesc->timing->units[unit_num].done;
303 m32r2f_model_m32r2_u_store (SIM_CPU *cpu, const IDESC *idesc,
304 int unit_num, int referenced,
307 return idesc->timing->units[unit_num].done;
310 #endif /* WITH_PROFILE_MODEL_P */