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21#include "qemu/osdep.h"
22#include "cpu.h"
23#include "s390x-internal.h"
24#include "exec/exec-all.h"
25#include "exec/gdbstub.h"
26#include "qemu/bitops.h"
27#include "sysemu/hw_accel.h"
28#include "sysemu/tcg.h"
29
30int s390_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
31{
32 S390CPU *cpu = S390_CPU(cs);
33 CPUS390XState *env = &cpu->env;
34
35 switch (n) {
36 case S390_PSWM_REGNUM:
37 return gdb_get_regl(mem_buf, s390_cpu_get_psw_mask(env));
38 case S390_PSWA_REGNUM:
39 return gdb_get_regl(mem_buf, env->psw.addr);
40 case S390_R0_REGNUM ... S390_R15_REGNUM:
41 return gdb_get_regl(mem_buf, env->regs[n - S390_R0_REGNUM]);
42 }
43 return 0;
44}
45
46int s390_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
47{
48 S390CPU *cpu = S390_CPU(cs);
49 CPUS390XState *env = &cpu->env;
50 target_ulong tmpl = ldtul_p(mem_buf);
51
52 switch (n) {
53 case S390_PSWM_REGNUM:
54 s390_cpu_set_psw(env, tmpl, env->psw.addr);
55 break;
56 case S390_PSWA_REGNUM:
57 env->psw.addr = tmpl;
58 break;
59 case S390_R0_REGNUM ... S390_R15_REGNUM:
60 env->regs[n - S390_R0_REGNUM] = tmpl;
61 break;
62 default:
63 return 0;
64 }
65 return 8;
66}
67
68
69#define S390_A0_REGNUM 0
70#define S390_A15_REGNUM 15
71
72#define S390_NUM_AC_REGS 16
73
74static int cpu_read_ac_reg(CPUS390XState *env, GByteArray *buf, int n)
75{
76 switch (n) {
77 case S390_A0_REGNUM ... S390_A15_REGNUM:
78 return gdb_get_reg32(buf, env->aregs[n]);
79 default:
80 return 0;
81 }
82}
83
84static int cpu_write_ac_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
85{
86 switch (n) {
87 case S390_A0_REGNUM ... S390_A15_REGNUM:
88 env->aregs[n] = ldl_p(mem_buf);
89 cpu_synchronize_post_init(env_cpu(env));
90 return 4;
91 default:
92 return 0;
93 }
94}
95
96
97#define S390_FPC_REGNUM 0
98#define S390_F0_REGNUM 1
99#define S390_F15_REGNUM 16
100
101#define S390_NUM_FP_REGS 17
102
103static int cpu_read_fp_reg(CPUS390XState *env, GByteArray *buf, int n)
104{
105 switch (n) {
106 case S390_FPC_REGNUM:
107 return gdb_get_reg32(buf, env->fpc);
108 case S390_F0_REGNUM ... S390_F15_REGNUM:
109 return gdb_get_reg64(buf, *get_freg(env, n - S390_F0_REGNUM));
110 default:
111 return 0;
112 }
113}
114
115static int cpu_write_fp_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
116{
117 switch (n) {
118 case S390_FPC_REGNUM:
119 env->fpc = ldl_p(mem_buf);
120 return 4;
121 case S390_F0_REGNUM ... S390_F15_REGNUM:
122 *get_freg(env, n - S390_F0_REGNUM) = ldtul_p(mem_buf);
123 return 8;
124 default:
125 return 0;
126 }
127}
128
129
130#define S390_V0L_REGNUM 0
131#define S390_V15L_REGNUM 15
132#define S390_V16_REGNUM 16
133#define S390_V31_REGNUM 31
134
135#define S390_NUM_VREGS 32
136
137static int cpu_read_vreg(CPUS390XState *env, GByteArray *buf, int n)
138{
139 int ret;
140
141 switch (n) {
142 case S390_V0L_REGNUM ... S390_V15L_REGNUM:
143 ret = gdb_get_reg64(buf, env->vregs[n][1]);
144 break;
145 case S390_V16_REGNUM ... S390_V31_REGNUM:
146 ret = gdb_get_reg64(buf, env->vregs[n][0]);
147 ret += gdb_get_reg64(buf, env->vregs[n][1]);
148 break;
149 default:
150 ret = 0;
151 }
152
153 return ret;
154}
155
156static int cpu_write_vreg(CPUS390XState *env, uint8_t *mem_buf, int n)
157{
158 switch (n) {
159 case S390_V0L_REGNUM ... S390_V15L_REGNUM:
160 env->vregs[n][1] = ldtul_p(mem_buf + 8);
161 return 8;
162 case S390_V16_REGNUM ... S390_V31_REGNUM:
163 env->vregs[n][0] = ldtul_p(mem_buf);
164 env->vregs[n][1] = ldtul_p(mem_buf + 8);
165 return 16;
166 default:
167 return 0;
168 }
169}
170
171
172#define S390_C0_REGNUM 0
173#define S390_C15_REGNUM 15
174
175#define S390_NUM_C_REGS 16
176
177#ifndef CONFIG_USER_ONLY
178static int cpu_read_c_reg(CPUS390XState *env, GByteArray *buf, int n)
179{
180 switch (n) {
181 case S390_C0_REGNUM ... S390_C15_REGNUM:
182 return gdb_get_regl(buf, env->cregs[n]);
183 default:
184 return 0;
185 }
186}
187
188static int cpu_write_c_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
189{
190 switch (n) {
191 case S390_C0_REGNUM ... S390_C15_REGNUM:
192 env->cregs[n] = ldtul_p(mem_buf);
193 if (tcg_enabled()) {
194 tlb_flush(env_cpu(env));
195 }
196 cpu_synchronize_post_init(env_cpu(env));
197 return 8;
198 default:
199 return 0;
200 }
201}
202
203
204#define S390_VIRT_CKC_REGNUM 0
205#define S390_VIRT_CPUTM_REGNUM 1
206#define S390_VIRT_BEA_REGNUM 2
207#define S390_VIRT_PREFIX_REGNUM 3
208#define S390_VIRT_PP_REGNUM 4
209#define S390_VIRT_PFT_REGNUM 5
210#define S390_VIRT_PFS_REGNUM 6
211#define S390_VIRT_PFC_REGNUM 7
212
213#define S390_NUM_VIRT_REGS 8
214
215static int cpu_read_virt_reg(CPUS390XState *env, GByteArray *mem_buf, int n)
216{
217 switch (n) {
218 case S390_VIRT_CKC_REGNUM:
219 return gdb_get_regl(mem_buf, env->ckc);
220 case S390_VIRT_CPUTM_REGNUM:
221 return gdb_get_regl(mem_buf, env->cputm);
222 case S390_VIRT_BEA_REGNUM:
223 return gdb_get_regl(mem_buf, env->gbea);
224 case S390_VIRT_PREFIX_REGNUM:
225 return gdb_get_regl(mem_buf, env->psa);
226 case S390_VIRT_PP_REGNUM:
227 return gdb_get_regl(mem_buf, env->pp);
228 case S390_VIRT_PFT_REGNUM:
229 return gdb_get_regl(mem_buf, env->pfault_token);
230 case S390_VIRT_PFS_REGNUM:
231 return gdb_get_regl(mem_buf, env->pfault_select);
232 case S390_VIRT_PFC_REGNUM:
233 return gdb_get_regl(mem_buf, env->pfault_compare);
234 default:
235 return 0;
236 }
237}
238
239static int cpu_write_virt_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
240{
241 switch (n) {
242 case S390_VIRT_CKC_REGNUM:
243 env->ckc = ldtul_p(mem_buf);
244 cpu_synchronize_post_init(env_cpu(env));
245 return 8;
246 case S390_VIRT_CPUTM_REGNUM:
247 env->cputm = ldtul_p(mem_buf);
248 cpu_synchronize_post_init(env_cpu(env));
249 return 8;
250 case S390_VIRT_BEA_REGNUM:
251 env->gbea = ldtul_p(mem_buf);
252 cpu_synchronize_post_init(env_cpu(env));
253 return 8;
254 case S390_VIRT_PREFIX_REGNUM:
255 env->psa = ldtul_p(mem_buf);
256 cpu_synchronize_post_init(env_cpu(env));
257 return 8;
258 case S390_VIRT_PP_REGNUM:
259 env->pp = ldtul_p(mem_buf);
260 cpu_synchronize_post_init(env_cpu(env));
261 return 8;
262 case S390_VIRT_PFT_REGNUM:
263 env->pfault_token = ldtul_p(mem_buf);
264 cpu_synchronize_post_init(env_cpu(env));
265 return 8;
266 case S390_VIRT_PFS_REGNUM:
267 env->pfault_select = ldtul_p(mem_buf);
268 cpu_synchronize_post_init(env_cpu(env));
269 return 8;
270 case S390_VIRT_PFC_REGNUM:
271 env->pfault_compare = ldtul_p(mem_buf);
272 cpu_synchronize_post_init(env_cpu(env));
273 return 8;
274 default:
275 return 0;
276 }
277}
278#endif
279
280
281#define S390_GS_RESERVED_REGNUM 0
282#define S390_GS_GSD_REGNUM 1
283#define S390_GS_GSSM_REGNUM 2
284#define S390_GS_GSEPLA_REGNUM 3
285
286#define S390_NUM_GS_REGS 4
287
288static int cpu_read_gs_reg(CPUS390XState *env, GByteArray *buf, int n)
289{
290 return gdb_get_regl(buf, env->gscb[n]);
291}
292
293static int cpu_write_gs_reg(CPUS390XState *env, uint8_t *mem_buf, int n)
294{
295 env->gscb[n] = ldtul_p(mem_buf);
296 cpu_synchronize_post_init(env_cpu(env));
297 return 8;
298}
299
300void s390_cpu_gdb_init(CPUState *cs)
301{
302 gdb_register_coprocessor(cs, cpu_read_ac_reg,
303 cpu_write_ac_reg,
304 S390_NUM_AC_REGS, "s390-acr.xml", 0);
305
306 gdb_register_coprocessor(cs, cpu_read_fp_reg,
307 cpu_write_fp_reg,
308 S390_NUM_FP_REGS, "s390-fpr.xml", 0);
309
310 gdb_register_coprocessor(cs, cpu_read_vreg,
311 cpu_write_vreg,
312 S390_NUM_VREGS, "s390-vx.xml", 0);
313
314 gdb_register_coprocessor(cs, cpu_read_gs_reg,
315 cpu_write_gs_reg,
316 S390_NUM_GS_REGS, "s390-gs.xml", 0);
317
318#ifndef CONFIG_USER_ONLY
319 gdb_register_coprocessor(cs, cpu_read_c_reg,
320 cpu_write_c_reg,
321 S390_NUM_C_REGS, "s390-cr.xml", 0);
322
323 if (kvm_enabled()) {
324 gdb_register_coprocessor(cs, cpu_read_virt_reg,
325 cpu_write_virt_reg,
326 S390_NUM_VIRT_REGS, "s390-virt.xml", 0);
327 }
328#endif
329}
330