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 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 #define TARGET_LONG_BITS 32
25 #define CPUArchState struct CPUOpenRISCState
27 /* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl. */
30 #include "qemu-common.h"
31 #include "exec/cpu-defs.h"
34 #define TYPE_OPENRISC_CPU "or1k-cpu"
36 #define OPENRISC_CPU_CLASS(klass) \
37 OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
38 #define OPENRISC_CPU(obj) \
39 OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
40 #define OPENRISC_CPU_GET_CLASS(obj) \
41 OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)
45 * @parent_realize: The parent class' realize handler.
46 * @parent_reset: The parent class' reset handler.
48 * A OpenRISC CPU model.
50 typedef struct OpenRISCCPUClass {
52 CPUClass parent_class;
55 DeviceRealize parent_realize;
56 void (*parent_reset)(CPUState *cpu);
59 #define NB_MMU_MODES 3
60 #define TARGET_INSN_START_EXTRA_WORDS 1
64 MMU_SUPERVISOR_IDX = 1,
68 #define TARGET_PAGE_BITS 13
70 #define TARGET_PHYS_ADDR_SPACE_BITS 32
71 #define TARGET_VIRT_ADDR_SPACE_BITS 32
73 #define SET_FP_CAUSE(reg, v) do {\
74 (reg) = ((reg) & ~(0x3f << 12)) | \
77 #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
78 #define UPDATE_FP_FLAGS(reg, v) do {\
79 (reg) |= ((v & 0x1f) << 2);\
82 /* Version Register */
83 #define SPR_VR 0xFFFF003F
88 /* Unit presece register */
101 UPR_CUP = (255 << 24),
104 /* CPU configure register */
106 CPUCFGR_NSGF = (15 << 0),
107 CPUCFGR_CGF = (1 << 4),
108 CPUCFGR_OB32S = (1 << 5),
109 CPUCFGR_OB64S = (1 << 6),
110 CPUCFGR_OF32S = (1 << 7),
111 CPUCFGR_OF64S = (1 << 8),
112 CPUCFGR_OV64S = (1 << 9),
113 /* CPUCFGR_ND = (1 << 10), */
114 /* CPUCFGR_AVRP = (1 << 11), */
115 CPUCFGR_EVBARP = (1 << 12),
116 /* CPUCFGR_ISRP = (1 << 13), */
117 /* CPUCFGR_AECSRP = (1 << 14), */
120 /* DMMU configure register */
122 DMMUCFGR_NTW = (3 << 0),
123 DMMUCFGR_NTS = (7 << 2),
124 DMMUCFGR_NAE = (7 << 5),
125 DMMUCFGR_CRI = (1 << 8),
126 DMMUCFGR_PRI = (1 << 9),
127 DMMUCFGR_TEIRI = (1 << 10),
128 DMMUCFGR_HTR = (1 << 11),
131 /* IMMU configure register */
133 IMMUCFGR_NTW = (3 << 0),
134 IMMUCFGR_NTS = (7 << 2),
135 IMMUCFGR_NAE = (7 << 5),
136 IMMUCFGR_CRI = (1 << 8),
137 IMMUCFGR_PRI = (1 << 9),
138 IMMUCFGR_TEIRI = (1 << 10),
139 IMMUCFGR_HTR = (1 << 11),
142 /* Power management register */
151 /* Float point control status register */
155 FPCSR_OVF = (1 << 3),
156 FPCSR_UNF = (1 << 4),
157 FPCSR_SNF = (1 << 5),
158 FPCSR_QNF = (1 << 6),
160 FPCSR_IXF = (1 << 8),
161 FPCSR_IVF = (1 << 9),
162 FPCSR_INF = (1 << 10),
163 FPCSR_DZF = (1 << 11),
166 /* Exceptions indices */
185 /* Supervisor register */
203 SR_SUMRA = (1 << 16),
207 /* Tick Timer Mode Register */
209 TTMR_TP = (0xfffffff),
217 TIMER_NONE = (0 << 30),
218 TIMER_INTR = (1 << 30),
219 TIMER_SHOT = (2 << 30),
220 TIMER_CONT = (3 << 30),
226 DTLB_MASK = (DTLB_SIZE-1),
228 ITLB_MASK = (ITLB_SIZE-1),
242 /* check if tlb available */
250 typedef struct OpenRISCTLBEntry {
255 #ifndef CONFIG_USER_ONLY
256 typedef struct CPUOpenRISCTLBContext {
257 OpenRISCTLBEntry itlb[ITLB_SIZE];
258 OpenRISCTLBEntry dtlb[DTLB_SIZE];
260 int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
263 target_ulong address, int rw);
264 int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
267 target_ulong address, int rw);
268 } CPUOpenRISCTLBContext;
271 typedef struct CPUOpenRISCState {
272 target_ulong shadow_gpr[16][32]; /* Shadow registers */
274 target_ulong pc; /* Program counter */
275 target_ulong ppc; /* Prev PC */
276 target_ulong jmp_pc; /* Jump PC */
278 uint64_t mac; /* Multiply registers MACHI:MACLO */
280 target_ulong epcr; /* Exception PC register */
281 target_ulong eear; /* Exception EA register */
283 target_ulong sr_f; /* the SR_F bit, values 0, 1. */
284 target_ulong sr_cy; /* the SR_CY bit, values 0, 1. */
285 target_long sr_ov; /* the SR_OV bit (in the sign bit only) */
286 uint32_t sr; /* Supervisor register, without SR_{F,CY,OV} */
287 uint32_t vr; /* Version register */
288 uint32_t upr; /* Unit presence register */
289 uint32_t dmmucfgr; /* DMMU configure register */
290 uint32_t immucfgr; /* IMMU configure register */
291 uint32_t esr; /* Exception supervisor register */
292 uint32_t evbar; /* Exception vector base address register */
293 uint32_t pmr; /* Power Management Register */
294 uint32_t fpcsr; /* Float register */
295 float_status fp_status;
297 target_ulong lock_addr;
298 target_ulong lock_value;
300 uint32_t dflag; /* In delay slot (boolean) */
302 #ifndef CONFIG_USER_ONLY
303 CPUOpenRISCTLBContext tlb;
306 /* Fields up to this point are cleared by a CPU reset */
307 struct {} end_reset_fields;
311 /* Fields from here on are preserved across CPU reset. */
312 uint32_t cpucfgr; /* CPU configure register */
314 #ifndef CONFIG_USER_ONLY
316 uint32_t ttmr; /* Timer tick mode register */
319 uint32_t picmr; /* Interrupt mask register */
320 uint32_t picsr; /* Interrupt contrl register*/
322 void *irq[32]; /* Interrupt irq input */
327 * @env: #CPUOpenRISCState
331 typedef struct OpenRISCCPU {
336 CPUOpenRISCState env;
340 static inline OpenRISCCPU *openrisc_env_get_cpu(CPUOpenRISCState *env)
342 return container_of(env, OpenRISCCPU, env);
345 #define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))
347 #define ENV_OFFSET offsetof(OpenRISCCPU, env)
349 void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
350 void openrisc_cpu_do_interrupt(CPUState *cpu);
351 bool openrisc_cpu_exec_interrupt(CPUState *cpu, int int_req);
352 void openrisc_cpu_dump_state(CPUState *cpu, FILE *f,
353 fprintf_function cpu_fprintf, int flags);
354 hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
355 int openrisc_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
356 int openrisc_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
357 void openrisc_translate_init(void);
358 int openrisc_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int size,
359 int rw, int mmu_idx);
360 int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);
361 int print_insn_or1k(bfd_vma addr, disassemble_info *info);
363 #define cpu_list cpu_openrisc_list
364 #define cpu_signal_handler cpu_openrisc_signal_handler
366 #ifndef CONFIG_USER_ONLY
367 extern const struct VMStateDescription vmstate_openrisc_cpu;
369 /* hw/openrisc_pic.c */
370 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
372 /* hw/openrisc_timer.c */
373 void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
374 uint32_t cpu_openrisc_count_get(OpenRISCCPU *cpu);
375 void cpu_openrisc_count_set(OpenRISCCPU *cpu, uint32_t val);
376 void cpu_openrisc_count_update(OpenRISCCPU *cpu);
377 void cpu_openrisc_timer_update(OpenRISCCPU *cpu);
378 void cpu_openrisc_count_start(OpenRISCCPU *cpu);
379 void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
382 #define OPENRISC_CPU_TYPE_SUFFIX "-" TYPE_OPENRISC_CPU
383 #define OPENRISC_CPU_TYPE_NAME(model) model OPENRISC_CPU_TYPE_SUFFIX
384 #define CPU_RESOLVING_TYPE TYPE_OPENRISC_CPU
386 #include "exec/cpu-all.h"
388 #define TB_FLAGS_DFLAG 1
389 #define TB_FLAGS_R0_0 2
390 #define TB_FLAGS_OVE SR_OVE
392 static inline uint32_t cpu_get_gpr(const CPUOpenRISCState *env, int i)
394 return env->shadow_gpr[0][i];
397 static inline void cpu_set_gpr(CPUOpenRISCState *env, int i, uint32_t val)
399 env->shadow_gpr[0][i] = val;
402 static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
404 target_ulong *cs_base, uint32_t *flags)
409 | (cpu_get_gpr(env, 0) == 0 ? TB_FLAGS_R0_0 : 0)
410 | (env->sr & SR_OVE));
413 static inline int cpu_mmu_index(CPUOpenRISCState *env, bool ifetch)
415 if (!(env->sr & SR_IME)) {
416 return MMU_NOMMU_IDX;
418 return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
421 static inline uint32_t cpu_get_sr(const CPUOpenRISCState *env)
426 + (env->sr_ov < 0) * SR_OV);
429 static inline void cpu_set_sr(CPUOpenRISCState *env, uint32_t val)
431 env->sr_f = (val & SR_F) != 0;
432 env->sr_cy = (val & SR_CY) != 0;
433 env->sr_ov = (val & SR_OV ? -1 : 0);
434 env->sr = (val & ~(SR_F | SR_CY | SR_OV)) | SR_FO;
437 #define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
439 #endif /* OPENRISC_CPU_H */