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 /* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl. */
30 #define TYPE_OPENRISC_CPU "or1k-cpu"
32 OBJECT_DECLARE_TYPE(OpenRISCCPU, OpenRISCCPUClass,
37 * @parent_realize: The parent class' realize handler.
38 * @parent_reset: The parent class' reset handler.
40 * A OpenRISC CPU model.
42 struct OpenRISCCPUClass {
44 CPUClass parent_class;
47 DeviceRealize parent_realize;
48 DeviceReset parent_reset;
51 #define TARGET_INSN_START_EXTRA_WORDS 1
55 MMU_SUPERVISOR_IDX = 1,
59 #define SET_FP_CAUSE(reg, v) do {\
60 (reg) = ((reg) & ~(0x3f << 12)) | \
63 #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
64 #define UPDATE_FP_FLAGS(reg, v) do {\
65 (reg) |= ((v & 0x1f) << 2);\
71 /* Unit presece register */
84 UPR_CUP = (255 << 24),
87 /* CPU configure register */
89 CPUCFGR_NSGF = (15 << 0),
90 CPUCFGR_CGF = (1 << 4),
91 CPUCFGR_OB32S = (1 << 5),
92 CPUCFGR_OB64S = (1 << 6),
93 CPUCFGR_OF32S = (1 << 7),
94 CPUCFGR_OF64S = (1 << 8),
95 CPUCFGR_OV64S = (1 << 9),
96 CPUCFGR_ND = (1 << 10),
97 CPUCFGR_AVRP = (1 << 11),
98 CPUCFGR_EVBARP = (1 << 12),
99 CPUCFGR_ISRP = (1 << 13),
100 CPUCFGR_AECSRP = (1 << 14),
101 CPUCFGR_OF64A32S = (1 << 15),
104 /* DMMU configure register */
106 DMMUCFGR_NTW = (3 << 0),
107 DMMUCFGR_NTS = (7 << 2),
108 DMMUCFGR_NAE = (7 << 5),
109 DMMUCFGR_CRI = (1 << 8),
110 DMMUCFGR_PRI = (1 << 9),
111 DMMUCFGR_TEIRI = (1 << 10),
112 DMMUCFGR_HTR = (1 << 11),
115 /* IMMU configure register */
117 IMMUCFGR_NTW = (3 << 0),
118 IMMUCFGR_NTS = (7 << 2),
119 IMMUCFGR_NAE = (7 << 5),
120 IMMUCFGR_CRI = (1 << 8),
121 IMMUCFGR_PRI = (1 << 9),
122 IMMUCFGR_TEIRI = (1 << 10),
123 IMMUCFGR_HTR = (1 << 11),
126 /* Power management register */
135 /* Float point control status register */
139 FPCSR_OVF = (1 << 3),
140 FPCSR_UNF = (1 << 4),
141 FPCSR_SNF = (1 << 5),
142 FPCSR_QNF = (1 << 6),
144 FPCSR_IXF = (1 << 8),
145 FPCSR_IVF = (1 << 9),
146 FPCSR_INF = (1 << 10),
147 FPCSR_DZF = (1 << 11),
150 /* Exceptions indices */
169 /* Supervisor register */
187 SR_SUMRA = (1 << 16),
191 /* Tick Timer Mode Register */
193 TTMR_TP = (0xfffffff),
201 TIMER_NONE = (0 << 30),
202 TIMER_INTR = (1 << 30),
203 TIMER_SHOT = (2 << 30),
204 TIMER_CONT = (3 << 30),
210 TLB_MASK = TLB_SIZE - 1,
224 typedef struct OpenRISCTLBEntry {
229 #ifndef CONFIG_USER_ONLY
230 typedef struct CPUOpenRISCTLBContext {
231 OpenRISCTLBEntry itlb[TLB_SIZE];
232 OpenRISCTLBEntry dtlb[TLB_SIZE];
234 int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
237 target_ulong address, int rw);
238 int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
241 target_ulong address, int rw);
242 } CPUOpenRISCTLBContext;
245 typedef struct CPUOpenRISCState {
246 target_ulong shadow_gpr[16][32]; /* Shadow registers */
248 target_ulong pc; /* Program counter */
249 target_ulong ppc; /* Prev PC */
250 target_ulong jmp_pc; /* Jump PC */
252 uint64_t mac; /* Multiply registers MACHI:MACLO */
254 target_ulong epcr; /* Exception PC register */
255 target_ulong eear; /* Exception EA register */
257 target_ulong sr_f; /* the SR_F bit, values 0, 1. */
258 target_ulong sr_cy; /* the SR_CY bit, values 0, 1. */
259 target_long sr_ov; /* the SR_OV bit (in the sign bit only) */
260 uint32_t sr; /* Supervisor register, without SR_{F,CY,OV} */
261 uint32_t esr; /* Exception supervisor register */
262 uint32_t evbar; /* Exception vector base address register */
263 uint32_t pmr; /* Power Management Register */
264 uint32_t fpcsr; /* Float register */
265 float_status fp_status;
267 target_ulong lock_addr;
268 target_ulong lock_value;
270 uint32_t dflag; /* In delay slot (boolean) */
272 #ifndef CONFIG_USER_ONLY
273 CPUOpenRISCTLBContext tlb;
276 /* Fields up to this point are cleared by a CPU reset */
277 struct {} end_reset_fields;
279 /* Fields from here on are preserved across CPU reset. */
280 uint32_t vr; /* Version register */
281 uint32_t vr2; /* Version register 2 */
282 uint32_t avr; /* Architecture version register */
283 uint32_t upr; /* Unit presence register */
284 uint32_t cpucfgr; /* CPU configure register */
285 uint32_t dmmucfgr; /* DMMU configure register */
286 uint32_t immucfgr; /* IMMU configure register */
288 #ifndef CONFIG_USER_ONLY
290 uint32_t ttmr; /* Timer tick mode register */
293 uint32_t picmr; /* Interrupt mask register */
294 uint32_t picsr; /* Interrupt contrl register*/
296 void *irq[32]; /* Interrupt irq input */
301 * @env: #CPUOpenRISCState
310 CPUNegativeOffsetState neg;
311 CPUOpenRISCState env;
315 void cpu_openrisc_list(void);
316 void openrisc_cpu_do_interrupt(CPUState *cpu);
317 bool openrisc_cpu_exec_interrupt(CPUState *cpu, int int_req);
318 void openrisc_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
319 hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
320 int openrisc_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
321 int openrisc_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
322 void openrisc_translate_init(void);
323 bool openrisc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
324 MMUAccessType access_type, int mmu_idx,
325 bool probe, uintptr_t retaddr);
326 int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);
327 int print_insn_or1k(bfd_vma addr, disassemble_info *info);
329 #define cpu_list cpu_openrisc_list
330 #define cpu_signal_handler cpu_openrisc_signal_handler
332 #ifndef CONFIG_USER_ONLY
333 extern const VMStateDescription vmstate_openrisc_cpu;
335 /* hw/openrisc_pic.c */
336 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
338 /* hw/openrisc_timer.c */
339 void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
340 uint32_t cpu_openrisc_count_get(OpenRISCCPU *cpu);
341 void cpu_openrisc_count_set(OpenRISCCPU *cpu, uint32_t val);
342 void cpu_openrisc_count_update(OpenRISCCPU *cpu);
343 void cpu_openrisc_timer_update(OpenRISCCPU *cpu);
344 void cpu_openrisc_count_start(OpenRISCCPU *cpu);
345 void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
348 #define OPENRISC_CPU_TYPE_SUFFIX "-" TYPE_OPENRISC_CPU
349 #define OPENRISC_CPU_TYPE_NAME(model) model OPENRISC_CPU_TYPE_SUFFIX
350 #define CPU_RESOLVING_TYPE TYPE_OPENRISC_CPU
352 typedef CPUOpenRISCState CPUArchState;
353 typedef OpenRISCCPU ArchCPU;
355 #include "exec/cpu-all.h"
357 #define TB_FLAGS_SM SR_SM
358 #define TB_FLAGS_DME SR_DME
359 #define TB_FLAGS_IME SR_IME
360 #define TB_FLAGS_OVE SR_OVE
361 #define TB_FLAGS_DFLAG 2 /* reuse SR_TEE */
362 #define TB_FLAGS_R0_0 4 /* reuse SR_IEE */
364 static inline uint32_t cpu_get_gpr(const CPUOpenRISCState *env, int i)
366 return env->shadow_gpr[0][i];
369 static inline void cpu_set_gpr(CPUOpenRISCState *env, int i, uint32_t val)
371 env->shadow_gpr[0][i] = val;
374 static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
376 target_ulong *cs_base, uint32_t *flags)
380 *flags = (env->dflag ? TB_FLAGS_DFLAG : 0)
381 | (cpu_get_gpr(env, 0) ? 0 : TB_FLAGS_R0_0)
382 | (env->sr & (SR_SM | SR_DME | SR_IME | SR_OVE));
385 static inline int cpu_mmu_index(CPUOpenRISCState *env, bool ifetch)
387 int ret = MMU_NOMMU_IDX; /* mmu is disabled */
389 if (env->sr & (ifetch ? SR_IME : SR_DME)) {
390 /* The mmu is enabled; test supervisor state. */
391 ret = env->sr & SR_SM ? MMU_SUPERVISOR_IDX : MMU_USER_IDX;
397 static inline uint32_t cpu_get_sr(const CPUOpenRISCState *env)
402 + (env->sr_ov < 0) * SR_OV);
405 static inline void cpu_set_sr(CPUOpenRISCState *env, uint32_t val)
407 env->sr_f = (val & SR_F) != 0;
408 env->sr_cy = (val & SR_CY) != 0;
409 env->sr_ov = (val & SR_OV ? -1 : 0);
410 env->sr = (val & ~(SR_F | SR_CY | SR_OV)) | SR_FO;
413 void cpu_set_fpcsr(CPUOpenRISCState *env, uint32_t val);
415 #define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
417 #endif /* OPENRISC_CPU_H */