Kill redundant declarion of perror()
[qemu-kvm/fedora.git] / target-cris / cpu.h
blobdea4cc46c129459e32afed481cf05db34393e199
1 /*
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
21 #ifndef CPU_CRIS_H
22 #define CPU_CRIS_H
24 #define TARGET_LONG_BITS 32
26 #include "cpu-defs.h"
28 #define TARGET_HAS_ICE 1
30 #define ELF_MACHINE EM_CRIS
32 #define EXCP_NMI 1
33 #define EXCP_GURU 2
34 #define EXCP_BUSFAULT 3
35 #define EXCP_IRQ 4
36 #define EXCP_BREAK 5
38 /* Register aliases. R0 - R15 */
39 #define R_FP 8
40 #define R_SP 14
41 #define R_ACR 15
43 /* Support regs, P0 - P15 */
44 #define PR_BZ 0
45 #define PR_VR 1
46 #define PR_PID 2
47 #define PR_SRS 3
48 #define PR_WZ 4
49 #define PR_EXS 5
50 #define PR_EDA 6
51 #define PR_MOF 7
52 #define PR_DZ 8
53 #define PR_EBP 9
54 #define PR_ERP 10
55 #define PR_SRP 11
56 #define PR_NRP 12
57 #define PR_CCS 13
58 #define PR_USP 14
59 #define PR_SPC 15
61 /* CPU flags. */
62 #define Q_FLAG 0x80000000
63 #define M_FLAG 0x40000000
64 #define S_FLAG 0x200
65 #define R_FLAG 0x100
66 #define P_FLAG 0x80
67 #define U_FLAG 0x40
68 #define P_FLAG 0x80
69 #define U_FLAG 0x40
70 #define I_FLAG 0x20
71 #define X_FLAG 0x10
72 #define N_FLAG 0x08
73 #define Z_FLAG 0x04
74 #define V_FLAG 0x02
75 #define C_FLAG 0x01
76 #define ALU_FLAGS 0x1F
78 /* Condition codes. */
79 #define CC_CC 0
80 #define CC_CS 1
81 #define CC_NE 2
82 #define CC_EQ 3
83 #define CC_VC 4
84 #define CC_VS 5
85 #define CC_PL 6
86 #define CC_MI 7
87 #define CC_LS 8
88 #define CC_HI 9
89 #define CC_GE 10
90 #define CC_LT 11
91 #define CC_GT 12
92 #define CC_LE 13
93 #define CC_A 14
94 #define CC_P 15
96 /* Internal flags for the implementation. */
97 #define F_DELAYSLOT 1
99 #define NB_MMU_MODES 2
101 typedef struct CPUCRISState {
102 uint32_t regs[16];
103 /* P0 - P15 are referred to as special registers in the docs. */
104 uint32_t pregs[16];
106 /* Pseudo register for the PC. Not directly accessable on CRIS. */
107 uint32_t pc;
109 /* Pseudo register for the kernel stack. */
110 uint32_t ksp;
112 /* Branch. */
113 int dslot;
114 int btaken;
115 uint32_t btarget;
117 /* Condition flag tracking. */
118 uint32_t cc_op;
119 uint32_t cc_mask;
120 uint32_t cc_dest;
121 uint32_t cc_src;
122 uint32_t cc_result;
123 /* size of the operation, 1 = byte, 2 = word, 4 = dword. */
124 int cc_size;
125 /* X flag at the time of cc snapshot. */
126 int cc_x;
128 int interrupt_vector;
129 int fault_vector;
130 int trap_vector;
132 /* FIXME: add a check in the translator to avoid writing to support
133 register sets beyond the 4th. The ISA allows up to 256! but in
134 practice there is no core that implements more than 4.
136 Support function registers are used to control units close to the
137 core. Accesses do not pass down the normal hierarchy.
139 uint32_t sregs[4][16];
141 /* Linear feedback shift reg in the mmu. Used to provide pseudo
142 randomness for the 'hint' the mmu gives to sw for chosing valid
143 sets on TLB refills. */
144 uint32_t mmu_rand_lfsr;
147 * We just store the stores to the tlbset here for later evaluation
148 * when the hw needs access to them.
150 * One for I and another for D.
152 struct
154 uint32_t hi;
155 uint32_t lo;
156 } tlbsets[2][4][16];
158 CPU_COMMON
159 } CPUCRISState;
161 CPUCRISState *cpu_cris_init(const char *cpu_model);
162 int cpu_cris_exec(CPUCRISState *s);
163 void cpu_cris_close(CPUCRISState *s);
164 void do_interrupt(CPUCRISState *env);
165 /* you can call this signal handler from your SIGBUS and SIGSEGV
166 signal handlers to inform the virtual CPU of exceptions. non zero
167 is returned if the signal was handled by the virtual CPU. */
168 int cpu_cris_signal_handler(int host_signum, void *pinfo,
169 void *puc);
171 enum {
172 CC_OP_DYNAMIC, /* Use env->cc_op */
173 CC_OP_FLAGS,
174 CC_OP_CMP,
175 CC_OP_MOVE,
176 CC_OP_ADD,
177 CC_OP_ADDC,
178 CC_OP_MCP,
179 CC_OP_ADDU,
180 CC_OP_SUB,
181 CC_OP_SUBU,
182 CC_OP_NEG,
183 CC_OP_BTST,
184 CC_OP_MULS,
185 CC_OP_MULU,
186 CC_OP_DSTEP,
187 CC_OP_BOUND,
189 CC_OP_OR,
190 CC_OP_AND,
191 CC_OP_XOR,
192 CC_OP_LSL,
193 CC_OP_LSR,
194 CC_OP_ASR,
195 CC_OP_LZ
198 /* CRIS uses 8k pages. */
199 #define TARGET_PAGE_BITS 13
200 #define MMAP_SHIFT TARGET_PAGE_BITS
202 #define CPUState CPUCRISState
203 #define cpu_init cpu_cris_init
204 #define cpu_exec cpu_cris_exec
205 #define cpu_gen_code cpu_cris_gen_code
206 #define cpu_signal_handler cpu_cris_signal_handler
208 #define CPU_SAVE_VERSION 1
210 /* MMU modes definitions */
211 #define MMU_MODE0_SUFFIX _kernel
212 #define MMU_MODE1_SUFFIX _user
213 #define MMU_USER_IDX 1
214 static inline int cpu_mmu_index (CPUState *env)
216 return !!(env->pregs[PR_CCS] & U_FLAG);
219 #if defined(CONFIG_USER_ONLY)
220 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
222 if (newsp)
223 env->regs[14] = newsp;
224 env->regs[10] = 0;
226 #endif
228 static inline void cpu_set_tls(CPUCRISState *env, target_ulong newtls)
230 env->pregs[PR_PID] = (env->pregs[PR_PID] & 0xff) | newtls;
233 /* Support function regs. */
234 #define SFR_RW_GC_CFG 0][0
235 #define SFR_RW_MM_CFG env->pregs[PR_SRS]][0
236 #define SFR_RW_MM_KBASE_LO env->pregs[PR_SRS]][1
237 #define SFR_RW_MM_KBASE_HI env->pregs[PR_SRS]][2
238 #define SFR_R_MM_CAUSE env->pregs[PR_SRS]][3
239 #define SFR_RW_MM_TLB_SEL env->pregs[PR_SRS]][4
240 #define SFR_RW_MM_TLB_LO env->pregs[PR_SRS]][5
241 #define SFR_RW_MM_TLB_HI env->pregs[PR_SRS]][6
243 #include "cpu-all.h"
244 #include "exec-all.h"
246 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
248 env->pc = tb->pc;
251 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
252 target_ulong *cs_base, int *flags)
254 *pc = env->pc;
255 *cs_base = 0;
256 *flags = env->dslot |
257 (env->pregs[PR_CCS] & (S_FLAG | P_FLAG | U_FLAG | X_FLAG));
260 #endif