2 * CRIS virtual CPU header
4 * Copyright (c) 2007 AXIS Communications AB
5 * Written by Edgar E. Iglesias
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library 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 GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #define TARGET_LONG_BITS 32
28 #include "softfloat.h"
30 #define TARGET_HAS_ICE 1
32 #define ELF_MACHINE EM_CRIS
34 #define EXCP_MMU_EXEC 0
35 #define EXCP_MMU_READ 1
36 #define EXCP_MMU_WRITE 2
37 #define EXCP_MMU_FLUSH 3
38 #define EXCP_MMU_FAULT 4
39 #define EXCP_BREAK 16 /* trap. */
54 #define ALU_FLAGS 0x1F
56 /* Condition codes. */
74 /* Internal flags for the implementation. */
77 #define NB_MMU_MODES 2
79 typedef struct CPUCRISState {
85 * We just store the stores to the tlbset here for later evaluation
86 * when the hw needs access to them.
88 * One for I and another for D.
96 uint32_t sregs[256][16]; /* grrr why so many?? */
101 /* These are setup up by the guest code just before transfering the
102 control back to the host. */
107 /* Condition flag tracking. */
114 /* size of the operation, 1 = byte, 2 = word, 4 = dword. */
117 /* extended arithmetics. */
124 int interrupt_request;
125 int interrupt_vector;
143 CPUCRISState *cpu_cris_init(const char *cpu_model);
144 int cpu_cris_exec(CPUCRISState *s);
145 void cpu_cris_close(CPUCRISState *s);
146 void do_interrupt(CPUCRISState *env);
147 /* you can call this signal handler from your SIGBUS and SIGSEGV
148 signal handlers to inform the virtual CPU of exceptions. non zero
149 is returned if the signal was handled by the virtual CPU. */
150 int cpu_cris_signal_handler(int host_signum, void *pinfo,
152 void cpu_cris_flush_flags(CPUCRISState *, int);
155 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
159 CC_OP_DYNAMIC, /* Use env->cc_op */
197 void cris_set_irq_level(CPUCRISState *env, int level, uint8_t vector);
198 void cris_set_macsr(CPUCRISState *env, uint32_t val);
199 void cris_switch_sp(CPUCRISState *env);
201 void do_cris_semihosting(CPUCRISState *env, int nr);
204 CRIS_FEATURE_CF_ISA_MUL,
207 static inline int cris_feature(CPUCRISState *env, int feature)
209 return (env->features & (1u << feature)) != 0;
212 void register_cris_insns (CPUCRISState *env);
214 /* CRIS uses 8k pages. */
215 #define TARGET_PAGE_BITS 13
216 #define MMAP_SHIFT TARGET_PAGE_BITS
218 #define CPUState CPUCRISState
219 #define cpu_init cpu_cris_init
220 #define cpu_exec cpu_cris_exec
221 #define cpu_gen_code cpu_cris_gen_code
222 #define cpu_signal_handler cpu_cris_signal_handler
224 /* MMU modes definitions */
225 #define MMU_MODE0_SUFFIX _kernel
226 #define MMU_MODE1_SUFFIX _user
227 #define MMU_USER_IDX 1
228 /* CRIS FIXME: I guess we want to validate supervisor mode acceses here. */
229 static inline int cpu_mmu_index (CPUState *env)
236 /* Register aliases. R0 - R15 */
241 /* Support regs, P0 - P15 */
254 /* Support function regs. */
255 #define SFR_RW_GC_CFG 0][0
256 #define SFR_RW_MM_CFG 2][0
257 #define SFR_RW_MM_KBASE_LO 2][1
258 #define SFR_RW_MM_KBASE_HI 2][2
259 #define SFR_R_MM_CAUSE 2][3
260 #define SFR_RW_MM_TLB_SEL 2][4
261 #define SFR_RW_MM_TLB_LO 2][5
262 #define SFR_RW_MM_TLB_HI 2][6