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4e58b838 DH |
1 | /* |
2 | * s390x internal definitions and helpers | |
3 | * | |
4 | * Copyright (c) 2009 Ulrich Hecht | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
7 | * See the COPYING file in the top-level directory. | |
8 | */ | |
9 | ||
10 | #ifndef S390X_INTERNAL_H | |
11 | #define S390X_INTERNAL_H | |
12 | ||
13 | #include "cpu.h" | |
14 | ||
15 | #ifndef CONFIG_USER_ONLY | |
16 | typedef struct LowCore { | |
17 | /* prefix area: defined by architecture */ | |
18 | uint32_t ccw1[2]; /* 0x000 */ | |
19 | uint32_t ccw2[4]; /* 0x008 */ | |
20 | uint8_t pad1[0x80 - 0x18]; /* 0x018 */ | |
21 | uint32_t ext_params; /* 0x080 */ | |
22 | uint16_t cpu_addr; /* 0x084 */ | |
23 | uint16_t ext_int_code; /* 0x086 */ | |
24 | uint16_t svc_ilen; /* 0x088 */ | |
25 | uint16_t svc_code; /* 0x08a */ | |
26 | uint16_t pgm_ilen; /* 0x08c */ | |
27 | uint16_t pgm_code; /* 0x08e */ | |
28 | uint32_t data_exc_code; /* 0x090 */ | |
29 | uint16_t mon_class_num; /* 0x094 */ | |
30 | uint16_t per_perc_atmid; /* 0x096 */ | |
31 | uint64_t per_address; /* 0x098 */ | |
32 | uint8_t exc_access_id; /* 0x0a0 */ | |
33 | uint8_t per_access_id; /* 0x0a1 */ | |
34 | uint8_t op_access_id; /* 0x0a2 */ | |
35 | uint8_t ar_access_id; /* 0x0a3 */ | |
36 | uint8_t pad2[0xA8 - 0xA4]; /* 0x0a4 */ | |
37 | uint64_t trans_exc_code; /* 0x0a8 */ | |
38 | uint64_t monitor_code; /* 0x0b0 */ | |
39 | uint16_t subchannel_id; /* 0x0b8 */ | |
40 | uint16_t subchannel_nr; /* 0x0ba */ | |
41 | uint32_t io_int_parm; /* 0x0bc */ | |
42 | uint32_t io_int_word; /* 0x0c0 */ | |
43 | uint8_t pad3[0xc8 - 0xc4]; /* 0x0c4 */ | |
44 | uint32_t stfl_fac_list; /* 0x0c8 */ | |
45 | uint8_t pad4[0xe8 - 0xcc]; /* 0x0cc */ | |
b8d55db0 | 46 | uint64_t mcic; /* 0x0e8 */ |
4e58b838 DH |
47 | uint8_t pad5[0xf4 - 0xf0]; /* 0x0f0 */ |
48 | uint32_t external_damage_code; /* 0x0f4 */ | |
49 | uint64_t failing_storage_address; /* 0x0f8 */ | |
50 | uint8_t pad6[0x110 - 0x100]; /* 0x100 */ | |
51 | uint64_t per_breaking_event_addr; /* 0x110 */ | |
52 | uint8_t pad7[0x120 - 0x118]; /* 0x118 */ | |
53 | PSW restart_old_psw; /* 0x120 */ | |
54 | PSW external_old_psw; /* 0x130 */ | |
55 | PSW svc_old_psw; /* 0x140 */ | |
56 | PSW program_old_psw; /* 0x150 */ | |
57 | PSW mcck_old_psw; /* 0x160 */ | |
58 | PSW io_old_psw; /* 0x170 */ | |
59 | uint8_t pad8[0x1a0 - 0x180]; /* 0x180 */ | |
60 | PSW restart_new_psw; /* 0x1a0 */ | |
61 | PSW external_new_psw; /* 0x1b0 */ | |
62 | PSW svc_new_psw; /* 0x1c0 */ | |
63 | PSW program_new_psw; /* 0x1d0 */ | |
64 | PSW mcck_new_psw; /* 0x1e0 */ | |
65 | PSW io_new_psw; /* 0x1f0 */ | |
a5f5ca5e | 66 | uint8_t pad13[0x11b0 - 0x200]; /* 0x200 */ |
9693379b DH |
67 | |
68 | uint64_t mcesad; /* 0x11B0 */ | |
4e58b838 DH |
69 | |
70 | /* 64 bit extparam used for pfault, diag 250 etc */ | |
71 | uint64_t ext_params2; /* 0x11B8 */ | |
72 | ||
73 | uint8_t pad14[0x1200 - 0x11C0]; /* 0x11C0 */ | |
74 | ||
75 | /* System info area */ | |
76 | ||
77 | uint64_t floating_pt_save_area[16]; /* 0x1200 */ | |
78 | uint64_t gpregs_save_area[16]; /* 0x1280 */ | |
79 | uint32_t st_status_fixed_logout[4]; /* 0x1300 */ | |
80 | uint8_t pad15[0x1318 - 0x1310]; /* 0x1310 */ | |
81 | uint32_t prefixreg_save_area; /* 0x1318 */ | |
82 | uint32_t fpt_creg_save_area; /* 0x131c */ | |
83 | uint8_t pad16[0x1324 - 0x1320]; /* 0x1320 */ | |
84 | uint32_t tod_progreg_save_area; /* 0x1324 */ | |
b8d55db0 DH |
85 | uint64_t cpu_timer_save_area; /* 0x1328 */ |
86 | uint64_t clock_comp_save_area; /* 0x1330 */ | |
4e58b838 DH |
87 | uint8_t pad17[0x1340 - 0x1338]; /* 0x1338 */ |
88 | uint32_t access_regs_save_area[16]; /* 0x1340 */ | |
89 | uint64_t cregs_save_area[16]; /* 0x1380 */ | |
90 | ||
91 | /* align to the top of the prefix area */ | |
92 | ||
93 | uint8_t pad18[0x2000 - 0x1400]; /* 0x1400 */ | |
94 | } QEMU_PACKED LowCore; | |
a5f5ca5e | 95 | QEMU_BUILD_BUG_ON(sizeof(LowCore) != 8192); |
4e58b838 DH |
96 | #endif /* CONFIG_USER_ONLY */ |
97 | ||
98 | #define MAX_ILEN 6 | |
99 | ||
100 | /* While the PoO talks about ILC (a number between 1-3) what is actually | |
101 | stored in LowCore is shifted left one bit (an even between 2-6). As | |
102 | this is the actual length of the insn and therefore more useful, that | |
103 | is what we want to pass around and manipulate. To make sure that we | |
104 | have applied this distinction universally, rename the "ILC" to "ILEN". */ | |
105 | static inline int get_ilen(uint8_t opc) | |
106 | { | |
107 | switch (opc >> 6) { | |
108 | case 0: | |
109 | return 2; | |
110 | case 1: | |
111 | case 2: | |
112 | return 4; | |
113 | default: | |
114 | return 6; | |
115 | } | |
116 | } | |
117 | ||
118 | /* Compute the ATMID field that is stored in the per_perc_atmid lowcore | |
119 | entry when a PER exception is triggered. */ | |
120 | static inline uint8_t get_per_atmid(CPUS390XState *env) | |
121 | { | |
122 | return ((env->psw.mask & PSW_MASK_64) ? (1 << 7) : 0) | | |
123 | (1 << 6) | | |
124 | ((env->psw.mask & PSW_MASK_32) ? (1 << 5) : 0) | | |
125 | ((env->psw.mask & PSW_MASK_DAT) ? (1 << 4) : 0) | | |
126 | ((env->psw.mask & PSW_ASC_SECONDARY) ? (1 << 3) : 0) | | |
127 | ((env->psw.mask & PSW_ASC_ACCREG) ? (1 << 2) : 0); | |
128 | } | |
129 | ||
7634d658 DH |
130 | static inline uint64_t wrap_address(CPUS390XState *env, uint64_t a) |
131 | { | |
132 | if (!(env->psw.mask & PSW_MASK_64)) { | |
133 | if (!(env->psw.mask & PSW_MASK_32)) { | |
134 | /* 24-Bit mode */ | |
135 | a &= 0x00ffffff; | |
136 | } else { | |
137 | /* 31-Bit mode */ | |
138 | a &= 0x7fffffff; | |
139 | } | |
140 | } | |
141 | return a; | |
142 | } | |
143 | ||
4e58b838 DH |
144 | /* CC optimization */ |
145 | ||
146 | /* Instead of computing the condition codes after each x86 instruction, | |
147 | * QEMU just stores the result (called CC_DST), the type of operation | |
148 | * (called CC_OP) and whatever operands are needed (CC_SRC and possibly | |
149 | * CC_VR). When the condition codes are needed, the condition codes can | |
150 | * be calculated using this information. Condition codes are not generated | |
151 | * if they are only needed for conditional branches. | |
152 | */ | |
153 | enum cc_op { | |
154 | CC_OP_CONST0 = 0, /* CC is 0 */ | |
155 | CC_OP_CONST1, /* CC is 1 */ | |
156 | CC_OP_CONST2, /* CC is 2 */ | |
157 | CC_OP_CONST3, /* CC is 3 */ | |
158 | ||
159 | CC_OP_DYNAMIC, /* CC calculation defined by env->cc_op */ | |
160 | CC_OP_STATIC, /* CC value is env->cc_op */ | |
161 | ||
162 | CC_OP_NZ, /* env->cc_dst != 0 */ | |
163 | CC_OP_LTGT_32, /* signed less/greater than (32bit) */ | |
164 | CC_OP_LTGT_64, /* signed less/greater than (64bit) */ | |
165 | CC_OP_LTUGTU_32, /* unsigned less/greater than (32bit) */ | |
166 | CC_OP_LTUGTU_64, /* unsigned less/greater than (64bit) */ | |
167 | CC_OP_LTGT0_32, /* signed less/greater than 0 (32bit) */ | |
168 | CC_OP_LTGT0_64, /* signed less/greater than 0 (64bit) */ | |
169 | ||
170 | CC_OP_ADD_64, /* overflow on add (64bit) */ | |
171 | CC_OP_ADDU_64, /* overflow on unsigned add (64bit) */ | |
172 | CC_OP_ADDC_64, /* overflow on unsigned add-carry (64bit) */ | |
173 | CC_OP_SUB_64, /* overflow on subtraction (64bit) */ | |
174 | CC_OP_SUBU_64, /* overflow on unsigned subtraction (64bit) */ | |
175 | CC_OP_SUBB_64, /* overflow on unsigned sub-borrow (64bit) */ | |
176 | CC_OP_ABS_64, /* sign eval on abs (64bit) */ | |
177 | CC_OP_NABS_64, /* sign eval on nabs (64bit) */ | |
178 | ||
179 | CC_OP_ADD_32, /* overflow on add (32bit) */ | |
180 | CC_OP_ADDU_32, /* overflow on unsigned add (32bit) */ | |
181 | CC_OP_ADDC_32, /* overflow on unsigned add-carry (32bit) */ | |
182 | CC_OP_SUB_32, /* overflow on subtraction (32bit) */ | |
183 | CC_OP_SUBU_32, /* overflow on unsigned subtraction (32bit) */ | |
184 | CC_OP_SUBB_32, /* overflow on unsigned sub-borrow (32bit) */ | |
185 | CC_OP_ABS_32, /* sign eval on abs (64bit) */ | |
186 | CC_OP_NABS_32, /* sign eval on nabs (64bit) */ | |
187 | ||
188 | CC_OP_COMP_32, /* complement */ | |
189 | CC_OP_COMP_64, /* complement */ | |
190 | ||
191 | CC_OP_TM_32, /* test under mask (32bit) */ | |
192 | CC_OP_TM_64, /* test under mask (64bit) */ | |
193 | ||
194 | CC_OP_NZ_F32, /* FP dst != 0 (32bit) */ | |
195 | CC_OP_NZ_F64, /* FP dst != 0 (64bit) */ | |
196 | CC_OP_NZ_F128, /* FP dst != 0 (128bit) */ | |
197 | ||
198 | CC_OP_ICM, /* insert characters under mask */ | |
199 | CC_OP_SLA_32, /* Calculate shift left signed (32bit) */ | |
200 | CC_OP_SLA_64, /* Calculate shift left signed (64bit) */ | |
201 | CC_OP_FLOGR, /* find leftmost one */ | |
6d930332 | 202 | CC_OP_LCBB, /* load count to block boundary */ |
ff825c6d | 203 | CC_OP_VC, /* vector compare result */ |
4e58b838 DH |
204 | CC_OP_MAX |
205 | }; | |
206 | ||
4e58b838 DH |
207 | static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb, |
208 | uint8_t *ar) | |
209 | { | |
210 | hwaddr addr = 0; | |
211 | uint8_t reg; | |
212 | ||
213 | reg = ipb >> 28; | |
214 | if (reg > 0) { | |
215 | addr = env->regs[reg]; | |
216 | } | |
217 | addr += (ipb >> 16) & 0xfff; | |
218 | if (ar) { | |
219 | *ar = reg; | |
220 | } | |
221 | ||
222 | return addr; | |
223 | } | |
224 | ||
225 | /* Base/displacement are at the same locations. */ | |
226 | #define decode_basedisp_rs decode_basedisp_s | |
227 | ||
4e58b838 DH |
228 | /* arch_dump.c */ |
229 | int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs, | |
230 | int cpuid, void *opaque); | |
231 | ||
232 | ||
233 | /* cc_helper.c */ | |
234 | const char *cc_name(enum cc_op cc_op); | |
235 | void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr); | |
236 | uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst, | |
237 | uint64_t vr); | |
238 | ||
239 | ||
240 | /* cpu.c */ | |
241 | #ifndef CONFIG_USER_ONLY | |
242 | unsigned int s390_cpu_halt(S390CPU *cpu); | |
243 | void s390_cpu_unhalt(S390CPU *cpu); | |
244 | #else | |
245 | static inline unsigned int s390_cpu_halt(S390CPU *cpu) | |
246 | { | |
247 | return 0; | |
248 | } | |
249 | ||
250 | static inline void s390_cpu_unhalt(S390CPU *cpu) | |
251 | { | |
252 | } | |
253 | #endif /* CONFIG_USER_ONLY */ | |
254 | ||
255 | ||
256 | /* cpu_models.c */ | |
257 | void s390_cpu_model_register_props(Object *obj); | |
258 | void s390_cpu_model_class_register_props(ObjectClass *oc); | |
259 | void s390_realize_cpu_model(CPUState *cs, Error **errp); | |
260 | ObjectClass *s390_cpu_class_by_name(const char *name); | |
261 | ||
262 | ||
263 | /* excp_helper.c */ | |
264 | void s390x_cpu_debug_excp_handler(CPUState *cs); | |
265 | void s390_cpu_do_interrupt(CPUState *cpu); | |
266 | bool s390_cpu_exec_interrupt(CPUState *cpu, int int_req); | |
82851985 RH |
267 | bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
268 | MMUAccessType access_type, int mmu_idx, | |
269 | bool probe, uintptr_t retaddr); | |
4e58b838 DH |
270 | void s390x_cpu_do_unaligned_access(CPUState *cs, vaddr addr, |
271 | MMUAccessType access_type, | |
272 | int mmu_idx, uintptr_t retaddr); | |
273 | ||
274 | ||
275 | /* fpu_helper.c */ | |
276 | uint32_t set_cc_nz_f32(float32 v); | |
277 | uint32_t set_cc_nz_f64(float64 v); | |
278 | uint32_t set_cc_nz_f128(float128 v); | |
4b70fc54 DH |
279 | #define S390_IEEE_MASK_INVALID 0x80 |
280 | #define S390_IEEE_MASK_DIVBYZERO 0x40 | |
281 | #define S390_IEEE_MASK_OVERFLOW 0x20 | |
282 | #define S390_IEEE_MASK_UNDERFLOW 0x10 | |
283 | #define S390_IEEE_MASK_INEXACT 0x08 | |
284 | #define S390_IEEE_MASK_QUANTUM 0x04 | |
285 | uint8_t s390_softfloat_exc_to_ieee(unsigned int exc); | |
c0ee7015 DH |
286 | int s390_swap_bfp_rounding_mode(CPUS390XState *env, int m3); |
287 | void s390_restore_bfp_rounding_mode(CPUS390XState *env, int old_mode); | |
4e58b838 DH |
288 | |
289 | ||
290 | /* gdbstub.c */ | |
291 | int s390_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); | |
292 | int s390_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); | |
293 | void s390_cpu_gdb_init(CPUState *cs); | |
294 | ||
295 | ||
296 | /* helper.c */ | |
90c84c56 | 297 | void s390_cpu_dump_state(CPUState *cpu, FILE *f, int flags); |
4e58b838 DH |
298 | hwaddr s390_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); |
299 | hwaddr s390_cpu_get_phys_addr_debug(CPUState *cpu, vaddr addr); | |
300 | uint64_t get_psw_mask(CPUS390XState *env); | |
301 | void s390_cpu_recompute_watchpoints(CPUState *cs); | |
302 | void s390x_tod_timer(void *opaque); | |
303 | void s390x_cpu_timer(void *opaque); | |
4e58b838 | 304 | void do_restart_interrupt(CPUS390XState *env); |
83f7f329 | 305 | void s390_handle_wait(S390CPU *cpu); |
cf729baa DH |
306 | #define S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area) |
307 | int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch); | |
f875cb0c | 308 | int s390_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len); |
4e58b838 DH |
309 | #ifndef CONFIG_USER_ONLY |
310 | LowCore *cpu_map_lowcore(CPUS390XState *env); | |
311 | void cpu_unmap_lowcore(LowCore *lowcore); | |
312 | #endif /* CONFIG_USER_ONLY */ | |
313 | ||
314 | ||
315 | /* interrupt.c */ | |
316 | void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen); | |
6482b0ff DH |
317 | void cpu_inject_clock_comparator(S390CPU *cpu); |
318 | void cpu_inject_cpu_timer(S390CPU *cpu); | |
14ca122e DH |
319 | void cpu_inject_emergency_signal(S390CPU *cpu, uint16_t src_cpu_addr); |
320 | int cpu_inject_external_call(S390CPU *cpu, uint16_t src_cpu_addr); | |
8417f904 DH |
321 | bool s390_cpu_has_io_int(S390CPU *cpu); |
322 | bool s390_cpu_has_ext_int(S390CPU *cpu); | |
323 | bool s390_cpu_has_mcck_int(S390CPU *cpu); | |
324 | bool s390_cpu_has_int(S390CPU *cpu); | |
b1ab5f60 DH |
325 | bool s390_cpu_has_restart_int(S390CPU *cpu); |
326 | bool s390_cpu_has_stop_int(S390CPU *cpu); | |
eabcea18 DH |
327 | void cpu_inject_restart(S390CPU *cpu); |
328 | void cpu_inject_stop(S390CPU *cpu); | |
4e58b838 DH |
329 | |
330 | ||
331 | /* ioinst.c */ | |
1b98fb99 DH |
332 | void ioinst_handle_xsch(S390CPU *cpu, uint64_t reg1, uintptr_t ra); |
333 | void ioinst_handle_csch(S390CPU *cpu, uint64_t reg1, uintptr_t ra); | |
334 | void ioinst_handle_hsch(S390CPU *cpu, uint64_t reg1, uintptr_t ra); | |
335 | void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, | |
336 | uintptr_t ra); | |
337 | void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, | |
338 | uintptr_t ra); | |
339 | void ioinst_handle_stcrw(S390CPU *cpu, uint32_t ipb, uintptr_t ra); | |
340 | void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, | |
341 | uintptr_t ra); | |
342 | int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra); | |
343 | void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb, uintptr_t ra); | |
4e58b838 | 344 | void ioinst_handle_schm(S390CPU *cpu, uint64_t reg1, uint64_t reg2, |
1b98fb99 DH |
345 | uint32_t ipb, uintptr_t ra); |
346 | void ioinst_handle_rsch(S390CPU *cpu, uint64_t reg1, uintptr_t ra); | |
347 | void ioinst_handle_rchp(S390CPU *cpu, uint64_t reg1, uintptr_t ra); | |
348 | void ioinst_handle_sal(S390CPU *cpu, uint64_t reg1, uintptr_t ra); | |
4e58b838 DH |
349 | |
350 | ||
351 | /* mem_helper.c */ | |
352 | target_ulong mmu_real2abs(CPUS390XState *env, target_ulong raddr); | |
c5a7392c DH |
353 | void probe_write_access(CPUS390XState *env, uint64_t addr, uint64_t len, |
354 | uintptr_t ra); | |
4e58b838 DH |
355 | |
356 | ||
357 | /* mmu_helper.c */ | |
358 | int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc, | |
359 | target_ulong *raddr, int *flags, bool exc); | |
fb66944d DH |
360 | int mmu_translate_real(CPUS390XState *env, target_ulong raddr, int rw, |
361 | target_ulong *addr, int *flags); | |
4e58b838 DH |
362 | |
363 | ||
364 | /* misc_helper.c */ | |
4e58b838 | 365 | int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3); |
968db419 DH |
366 | void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, |
367 | uintptr_t ra); | |
4e58b838 DH |
368 | |
369 | ||
370 | /* translate.c */ | |
371 | void s390x_translate_init(void); | |
372 | ||
74b4c74d DH |
373 | |
374 | /* sigp.c */ | |
375 | int handle_sigp(CPUS390XState *env, uint8_t order, uint64_t r1, uint64_t r3); | |
3047f8b5 | 376 | void do_stop_interrupt(CPUS390XState *env); |
74b4c74d | 377 | |
4e58b838 | 378 | #endif /* S390X_INTERNAL_H */ |