xref: /openbmc/qemu/target/tricore/cpu.h (revision a120d320)
1 /*
2  *  TriCore emulation for qemu: main CPU struct.
3  *
4  *  Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
5  *
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.
10  *
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.
15  *
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/>.
18  */
19 
20 #ifndef TRICORE_CPU_H
21 #define TRICORE_CPU_H
22 
23 #include "cpu-qom.h"
24 #include "hw/registerfields.h"
25 #include "exec/cpu-defs.h"
26 #include "qemu/cpu-float.h"
27 #include "tricore-defs.h"
28 
29 typedef struct CPUArchState {
30     /* GPR Register */
31     uint32_t gpr_a[16];
32     uint32_t gpr_d[16];
33 /* Frequently accessed PSW_USB bits are stored separately for efficiency.
34        This contains all the other bits.  Use psw_{read,write} to access
35        the whole PSW.  */
36     uint32_t PSW;
37     /* PSW flag cache for faster execution */
38     uint32_t PSW_USB_C;
39     uint32_t PSW_USB_V;   /* Only if bit 31 set, then flag is set  */
40     uint32_t PSW_USB_SV;  /* Only if bit 31 set, then flag is set  */
41     uint32_t PSW_USB_AV;  /* Only if bit 31 set, then flag is set. */
42     uint32_t PSW_USB_SAV; /* Only if bit 31 set, then flag is set. */
43 
44 #define R(ADDR, NAME, FEATURE) uint32_t NAME;
45 #define A(ADDR, NAME, FEATURE) uint32_t NAME;
46 #define E(ADDR, NAME, FEATURE) uint32_t NAME;
47 #include "csfr.h.inc"
48 #undef R
49 #undef A
50 #undef E
51 
52     /* Floating Point Registers */
53     float_status fp_status;
54 
55     /* Internal CPU feature flags.  */
56     uint64_t features;
57 } CPUTriCoreState;
58 
59 /**
60  * TriCoreCPU:
61  * @env: #CPUTriCoreState
62  *
63  * A TriCore CPU.
64  */
65 struct ArchCPU {
66     CPUState parent_obj;
67 
68     CPUTriCoreState env;
69 };
70 
71 struct TriCoreCPUClass {
72     CPUClass parent_class;
73 
74     DeviceRealize parent_realize;
75     ResettablePhases parent_phases;
76 };
77 
78 hwaddr tricore_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
79 void tricore_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
80 
81 FIELD(PCXI, PCPN_13, 24, 8)
82 FIELD(PCXI, PCPN_161, 22, 8)
83 FIELD(PCXI, PIE_13, 23, 1)
84 FIELD(PCXI, PIE_161, 21, 1)
85 FIELD(PCXI, UL_13, 22, 1)
86 FIELD(PCXI, UL_161, 20, 1)
87 FIELD(PCXI, PCXS, 16, 4)
88 FIELD(PCXI, PCXO, 0, 16)
89 uint32_t pcxi_get_ul(CPUTriCoreState *env);
90 uint32_t pcxi_get_pie(CPUTriCoreState *env);
91 uint32_t pcxi_get_pcpn(CPUTriCoreState *env);
92 uint32_t pcxi_get_pcxs(CPUTriCoreState *env);
93 uint32_t pcxi_get_pcxo(CPUTriCoreState *env);
94 void pcxi_set_ul(CPUTriCoreState *env, uint32_t val);
95 void pcxi_set_pie(CPUTriCoreState *env, uint32_t val);
96 void pcxi_set_pcpn(CPUTriCoreState *env, uint32_t val);
97 
98 FIELD(ICR, IE_161, 15, 1)
99 FIELD(ICR, IE_13, 8, 1)
100 FIELD(ICR, PIPN, 16, 8)
101 FIELD(ICR, CCPN, 0, 8)
102 
103 uint32_t icr_get_ie(CPUTriCoreState *env);
104 uint32_t icr_get_ccpn(CPUTriCoreState *env);
105 
106 void icr_set_ccpn(CPUTriCoreState *env, uint32_t val);
107 void icr_set_ie(CPUTriCoreState *env, uint32_t val);
108 
109 #define MASK_PSW_USB 0xff000000
110 #define MASK_USB_C   0x80000000
111 #define MASK_USB_V   0x40000000
112 #define MASK_USB_SV  0x20000000
113 #define MASK_USB_AV  0x10000000
114 #define MASK_USB_SAV 0x08000000
115 #define MASK_PSW_PRS 0x00003000
116 #define MASK_PSW_IO  0x00000c00
117 #define MASK_PSW_IS  0x00000200
118 #define MASK_PSW_GW  0x00000100
119 #define MASK_PSW_CDE 0x00000080
120 #define MASK_PSW_CDC 0x0000007f
121 #define MASK_PSW_FPU_RM 0x3000000
122 
123 #define MASK_SYSCON_PRO_TEN 0x2
124 #define MASK_SYSCON_FCD_SF  0x1
125 
126 #define MASK_CPUID_MOD     0xffff0000
127 #define MASK_CPUID_MOD_32B 0x0000ff00
128 #define MASK_CPUID_REV     0x000000ff
129 
130 
131 #define MASK_FCX_FCXS 0x000f0000
132 #define MASK_FCX_FCXO 0x0000ffff
133 
134 #define MASK_LCX_LCXS 0x000f0000
135 #define MASK_LCX_LCX0 0x0000ffff
136 
137 #define MASK_DBGSR_DE 0x1
138 #define MASK_DBGSR_HALT 0x6
139 #define MASK_DBGSR_SUSP 0x10
140 #define MASK_DBGSR_PREVSUSP 0x20
141 #define MASK_DBGSR_PEVT 0x40
142 #define MASK_DBGSR_EVTSRC 0x1f00
143 
144 enum tricore_priv_levels {
145     TRICORE_PRIV_UM0 = 0x0, /* user mode-0 flag */
146     TRICORE_PRIV_UM1 = 0x1, /* user mode-1 flag */
147     TRICORE_PRIV_SM  = 0x2, /* kernel mode flag */
148 };
149 
150 enum tricore_features {
151     TRICORE_FEATURE_13,
152     TRICORE_FEATURE_131,
153     TRICORE_FEATURE_16,
154     TRICORE_FEATURE_161,
155     TRICORE_FEATURE_162,
156 };
157 
tricore_has_feature(CPUTriCoreState * env,int feature)158 static inline int tricore_has_feature(CPUTriCoreState *env, int feature)
159 {
160     return (env->features & (1ULL << feature)) != 0;
161 }
162 
163 /* TriCore Traps Classes*/
164 enum {
165     TRAPC_NONE     = -1,
166     TRAPC_MMU      = 0,
167     TRAPC_PROT     = 1,
168     TRAPC_INSN_ERR = 2,
169     TRAPC_CTX_MNG  = 3,
170     TRAPC_SYSBUS   = 4,
171     TRAPC_ASSERT   = 5,
172     TRAPC_SYSCALL  = 6,
173     TRAPC_NMI      = 7,
174     TRAPC_IRQ      = 8
175 };
176 
177 /* Class 0 TIN */
178 enum {
179     TIN0_VAF = 0,
180     TIN0_VAP = 1,
181 };
182 
183 /* Class 1 TIN */
184 enum {
185     TIN1_PRIV = 1,
186     TIN1_MPR  = 2,
187     TIN1_MPW  = 3,
188     TIN1_MPX  = 4,
189     TIN1_MPP  = 5,
190     TIN1_MPN  = 6,
191     TIN1_GRWP = 7,
192 };
193 
194 /* Class 2 TIN */
195 enum {
196     TIN2_IOPC = 1,
197     TIN2_UOPC = 2,
198     TIN2_OPD  = 3,
199     TIN2_ALN  = 4,
200     TIN2_MEM  = 5,
201 };
202 
203 /* Class 3 TIN */
204 enum {
205     TIN3_FCD  = 1,
206     TIN3_CDO  = 2,
207     TIN3_CDU  = 3,
208     TIN3_FCU  = 4,
209     TIN3_CSU  = 5,
210     TIN3_CTYP = 6,
211     TIN3_NEST = 7,
212 };
213 
214 /* Class 4 TIN */
215 enum {
216     TIN4_PSE = 1,
217     TIN4_DSE = 2,
218     TIN4_DAE = 3,
219     TIN4_CAE = 4,
220     TIN4_PIE = 5,
221     TIN4_DIE = 6,
222 };
223 
224 /* Class 5 TIN */
225 enum {
226     TIN5_OVF  = 1,
227     TIN5_SOVF = 1,
228 };
229 
230 /* Class 6 TIN
231  *
232  * Is always TIN6_SYS
233  */
234 
235 /* Class 7 TIN */
236 enum {
237     TIN7_NMI = 0,
238 };
239 
240 uint32_t psw_read(CPUTriCoreState *env);
241 void psw_write(CPUTriCoreState *env, uint32_t val);
242 int tricore_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n);
243 int tricore_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n);
244 
245 void fpu_set_state(CPUTriCoreState *env);
246 
247 #define MMU_USER_IDX 2
248 
249 #include "exec/cpu-all.h"
250 
251 FIELD(TB_FLAGS, PRIV, 0, 2)
252 
253 void cpu_state_reset(CPUTriCoreState *s);
254 void tricore_tcg_init(void);
255 
cpu_get_tb_cpu_state(CPUTriCoreState * env,vaddr * pc,uint64_t * cs_base,uint32_t * flags)256 static inline void cpu_get_tb_cpu_state(CPUTriCoreState *env, vaddr *pc,
257                                         uint64_t *cs_base, uint32_t *flags)
258 {
259     uint32_t new_flags = 0;
260     *pc = env->PC;
261     *cs_base = 0;
262 
263     new_flags |= FIELD_DP32(new_flags, TB_FLAGS, PRIV,
264             extract32(env->PSW, 10, 2));
265     *flags = new_flags;
266 }
267 
268 #define CPU_RESOLVING_TYPE TYPE_TRICORE_CPU
269 
270 /* helpers.c */
271 bool tricore_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
272                           MMUAccessType access_type, int mmu_idx,
273                           bool probe, uintptr_t retaddr);
274 
275 #endif /* TRICORE_CPU_H */
276