2 * OpenRISC virtual CPU header.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #ifndef OPENRISC_CPU_H
21 #define OPENRISC_CPU_H
23 #include "exec/cpu-defs.h"
24 #include "hw/core/cpu.h"
25 #include "qom/object.h"
27 #define TYPE_OPENRISC_CPU "or1k-cpu"
29 OBJECT_DECLARE_CPU_TYPE(OpenRISCCPU, OpenRISCCPUClass, OPENRISC_CPU)
33 * @parent_realize: The parent class' realize handler.
34 * @parent_reset: The parent class' reset handler.
36 * A OpenRISC CPU model.
38 struct OpenRISCCPUClass {
40 CPUClass parent_class;
43 DeviceRealize parent_realize;
44 DeviceReset parent_reset;
47 #define TARGET_INSN_START_EXTRA_WORDS 1
51 MMU_SUPERVISOR_IDX = 1,
55 #define SET_FP_CAUSE(reg, v) do {\
56 (reg) = ((reg) & ~(0x3f << 12)) | \
59 #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
60 #define UPDATE_FP_FLAGS(reg, v) do {\
61 (reg) |= ((v & 0x1f) << 2);\
67 /* Unit presece register */
80 UPR_CUP = (255 << 24),
83 /* CPU configure register */
85 CPUCFGR_NSGF = (15 << 0),
86 CPUCFGR_CGF = (1 << 4),
87 CPUCFGR_OB32S = (1 << 5),
88 CPUCFGR_OB64S = (1 << 6),
89 CPUCFGR_OF32S = (1 << 7),
90 CPUCFGR_OF64S = (1 << 8),
91 CPUCFGR_OV64S = (1 << 9),
92 CPUCFGR_ND = (1 << 10),
93 CPUCFGR_AVRP = (1 << 11),
94 CPUCFGR_EVBARP = (1 << 12),
95 CPUCFGR_ISRP = (1 << 13),
96 CPUCFGR_AECSRP = (1 << 14),
97 CPUCFGR_OF64A32S = (1 << 15),
100 /* DMMU configure register */
102 DMMUCFGR_NTW = (3 << 0),
103 DMMUCFGR_NTS = (7 << 2),
104 DMMUCFGR_NAE = (7 << 5),
105 DMMUCFGR_CRI = (1 << 8),
106 DMMUCFGR_PRI = (1 << 9),
107 DMMUCFGR_TEIRI = (1 << 10),
108 DMMUCFGR_HTR = (1 << 11),
111 /* IMMU configure register */
113 IMMUCFGR_NTW = (3 << 0),
114 IMMUCFGR_NTS = (7 << 2),
115 IMMUCFGR_NAE = (7 << 5),
116 IMMUCFGR_CRI = (1 << 8),
117 IMMUCFGR_PRI = (1 << 9),
118 IMMUCFGR_TEIRI = (1 << 10),
119 IMMUCFGR_HTR = (1 << 11),
122 /* Power management register */
131 /* Float point control status register */
135 FPCSR_OVF = (1 << 3),
136 FPCSR_UNF = (1 << 4),
137 FPCSR_SNF = (1 << 5),
138 FPCSR_QNF = (1 << 6),
140 FPCSR_IXF = (1 << 8),
141 FPCSR_IVF = (1 << 9),
142 FPCSR_INF = (1 << 10),
143 FPCSR_DZF = (1 << 11),
146 /* Exceptions indices */
165 /* Supervisor register */
183 SR_SUMRA = (1 << 16),
187 /* Tick Timer Mode Register */
189 TTMR_TP = (0xfffffff),
197 TIMER_NONE = (0 << 30),
198 TIMER_INTR = (1 << 30),
199 TIMER_SHOT = (2 << 30),
200 TIMER_CONT = (3 << 30),
206 TLB_MASK = TLB_SIZE - 1,
220 typedef struct OpenRISCTLBEntry {
225 #ifndef CONFIG_USER_ONLY
226 typedef struct CPUOpenRISCTLBContext {
227 OpenRISCTLBEntry itlb[TLB_SIZE];
228 OpenRISCTLBEntry dtlb[TLB_SIZE];
230 int (*cpu_openrisc_map_address_code)(OpenRISCCPU *cpu,
233 target_ulong address, int rw);
234 int (*cpu_openrisc_map_address_data)(OpenRISCCPU *cpu,
237 target_ulong address, int rw);
238 } CPUOpenRISCTLBContext;
241 typedef struct CPUArchState {
242 target_ulong shadow_gpr[16][32]; /* Shadow registers */
244 target_ulong pc; /* Program counter */
245 target_ulong ppc; /* Prev PC */
246 target_ulong jmp_pc; /* Jump PC */
248 uint64_t mac; /* Multiply registers MACHI:MACLO */
250 target_ulong epcr; /* Exception PC register */
251 target_ulong eear; /* Exception EA register */
253 target_ulong sr_f; /* the SR_F bit, values 0, 1. */
254 target_ulong sr_cy; /* the SR_CY bit, values 0, 1. */
255 target_long sr_ov; /* the SR_OV bit (in the sign bit only) */
256 uint32_t sr; /* Supervisor register, without SR_{F,CY,OV} */
257 uint32_t esr; /* Exception supervisor register */
258 uint32_t evbar; /* Exception vector base address register */
259 uint32_t pmr; /* Power Management Register */
260 uint32_t fpcsr; /* Float register */
261 float_status fp_status;
263 target_ulong lock_addr;
264 target_ulong lock_value;
266 uint32_t dflag; /* In delay slot (boolean) */
268 #ifndef CONFIG_USER_ONLY
269 CPUOpenRISCTLBContext tlb;
272 /* Fields up to this point are cleared by a CPU reset */
273 struct {} end_reset_fields;
275 /* Fields from here on are preserved across CPU reset. */
276 uint32_t vr; /* Version register */
277 uint32_t vr2; /* Version register 2 */
278 uint32_t avr; /* Architecture version register */
279 uint32_t upr; /* Unit presence register */
280 uint32_t cpucfgr; /* CPU configure register */
281 uint32_t dmmucfgr; /* DMMU configure register */
282 uint32_t immucfgr; /* IMMU configure register */
284 #ifndef CONFIG_USER_ONLY
286 uint32_t ttmr; /* Timer tick mode register */
289 uint32_t picmr; /* Interrupt mask register */
290 uint32_t picsr; /* Interrupt contrl register*/
296 * @env: #CPUOpenRISCState
305 CPUNegativeOffsetState neg;
306 CPUOpenRISCState env;
310 void cpu_openrisc_list(void);
311 void openrisc_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
312 hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
313 int openrisc_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
314 int openrisc_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
315 void openrisc_translate_init(void);
316 int print_insn_or1k(bfd_vma addr, disassemble_info *info);
318 #define cpu_list cpu_openrisc_list
320 #ifndef CONFIG_USER_ONLY
321 bool openrisc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
322 MMUAccessType access_type, int mmu_idx,
323 bool probe, uintptr_t retaddr);
325 extern const VMStateDescription vmstate_openrisc_cpu;
327 void openrisc_cpu_do_interrupt(CPUState *cpu);
328 bool openrisc_cpu_exec_interrupt(CPUState *cpu, int int_req);
330 /* hw/openrisc_pic.c */
331 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
333 /* hw/openrisc_timer.c */
334 void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
335 uint32_t cpu_openrisc_count_get(OpenRISCCPU *cpu);
336 void cpu_openrisc_count_set(OpenRISCCPU *cpu, uint32_t val);
337 void cpu_openrisc_count_update(OpenRISCCPU *cpu);
338 void cpu_openrisc_timer_update(OpenRISCCPU *cpu);
339 void cpu_openrisc_count_start(OpenRISCCPU *cpu);
340 void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
343 #define OPENRISC_CPU_TYPE_SUFFIX "-" TYPE_OPENRISC_CPU
344 #define OPENRISC_CPU_TYPE_NAME(model) model OPENRISC_CPU_TYPE_SUFFIX
345 #define CPU_RESOLVING_TYPE TYPE_OPENRISC_CPU
347 #include "exec/cpu-all.h"
349 #define TB_FLAGS_SM SR_SM
350 #define TB_FLAGS_DME SR_DME
351 #define TB_FLAGS_IME SR_IME
352 #define TB_FLAGS_OVE SR_OVE
353 #define TB_FLAGS_DFLAG 2 /* reuse SR_TEE */
354 #define TB_FLAGS_R0_0 4 /* reuse SR_IEE */
356 static inline uint32_t cpu_get_gpr(const CPUOpenRISCState *env, int i)
358 return env->shadow_gpr[0][i];
361 static inline void cpu_set_gpr(CPUOpenRISCState *env, int i, uint32_t val)
363 env->shadow_gpr[0][i] = val;
366 static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
368 target_ulong *cs_base, uint32_t *flags)
372 *flags = (env->dflag ? TB_FLAGS_DFLAG : 0)
373 | (cpu_get_gpr(env, 0) ? 0 : TB_FLAGS_R0_0)
374 | (env->sr & (SR_SM | SR_DME | SR_IME | SR_OVE));
377 static inline int cpu_mmu_index(CPUOpenRISCState *env, bool ifetch)
379 int ret = MMU_NOMMU_IDX; /* mmu is disabled */
381 if (env->sr & (ifetch ? SR_IME : SR_DME)) {
382 /* The mmu is enabled; test supervisor state. */
383 ret = env->sr & SR_SM ? MMU_SUPERVISOR_IDX : MMU_USER_IDX;
389 static inline uint32_t cpu_get_sr(const CPUOpenRISCState *env)
394 + (env->sr_ov < 0) * SR_OV);
397 static inline void cpu_set_sr(CPUOpenRISCState *env, uint32_t val)
399 env->sr_f = (val & SR_F) != 0;
400 env->sr_cy = (val & SR_CY) != 0;
401 env->sr_ov = (val & SR_OV ? -1 : 0);
402 env->sr = (val & ~(SR_F | SR_CY | SR_OV)) | SR_FO;
405 void cpu_set_fpcsr(CPUOpenRISCState *env, uint32_t val);
407 #define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
409 #endif /* OPENRISC_CPU_H */