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cfae5c90 AF |
1 | /* |
2 | * s390x gdb server stub | |
3 | * | |
4 | * Copyright (c) 2003-2005 Fabrice Bellard | |
5 | * Copyright (c) 2013 SUSE LINUX Products GmbH | |
6 | * | |
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. | |
11 | * | |
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 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
9615495a | 20 | #include "qemu/osdep.h" |
5b50e790 | 21 | #include "qemu-common.h" |
33c11879 | 22 | #include "cpu.h" |
63c91552 | 23 | #include "exec/exec-all.h" |
5b50e790 AF |
24 | #include "exec/gdbstub.h" |
25 | #include "qemu/bitops.h" | |
cfae5c90 | 26 | |
5b50e790 | 27 | int s390_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
cfae5c90 | 28 | { |
5b50e790 AF |
29 | S390CPU *cpu = S390_CPU(cs); |
30 | CPUS390XState *env = &cpu->env; | |
cfae5c90 AF |
31 | uint64_t val; |
32 | int cc_op; | |
33 | ||
34 | switch (n) { | |
35 | case S390_PSWM_REGNUM: | |
97fa52f0 DH |
36 | if (tcg_enabled()) { |
37 | cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst, | |
38 | env->cc_vr); | |
39 | val = deposit64(env->psw.mask, 44, 2, cc_op); | |
40 | return gdb_get_regl(mem_buf, val); | |
41 | } | |
42 | return gdb_get_regl(mem_buf, env->psw.mask); | |
cfae5c90 | 43 | case S390_PSWA_REGNUM: |
986a2998 | 44 | return gdb_get_regl(mem_buf, env->psw.addr); |
cfae5c90 | 45 | case S390_R0_REGNUM ... S390_R15_REGNUM: |
218829db | 46 | return gdb_get_regl(mem_buf, env->regs[n - S390_R0_REGNUM]); |
cfae5c90 | 47 | } |
cfae5c90 AF |
48 | return 0; |
49 | } | |
50 | ||
5b50e790 | 51 | int s390_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
cfae5c90 | 52 | { |
5b50e790 AF |
53 | S390CPU *cpu = S390_CPU(cs); |
54 | CPUS390XState *env = &cpu->env; | |
73d510c9 | 55 | target_ulong tmpl = ldtul_p(mem_buf); |
cfae5c90 AF |
56 | |
57 | switch (n) { | |
58 | case S390_PSWM_REGNUM: | |
59 | env->psw.mask = tmpl; | |
97fa52f0 DH |
60 | if (tcg_enabled()) { |
61 | env->cc_op = extract64(tmpl, 44, 2); | |
62 | } | |
cfae5c90 AF |
63 | break; |
64 | case S390_PSWA_REGNUM: | |
65 | env->psw.addr = tmpl; | |
66 | break; | |
67 | case S390_R0_REGNUM ... S390_R15_REGNUM: | |
218829db | 68 | env->regs[n - S390_R0_REGNUM] = tmpl; |
cfae5c90 | 69 | break; |
73d510c9 DH |
70 | default: |
71 | return 0; | |
72 | } | |
73 | return 8; | |
74 | } | |
75 | ||
76 | /* the values represent the positions in s390-acr.xml */ | |
77 | #define S390_A0_REGNUM 0 | |
78 | #define S390_A15_REGNUM 15 | |
79 | /* total number of registers in s390-acr.xml */ | |
80 | #define S390_NUM_AC_REGS 16 | |
81 | ||
82 | static int cpu_read_ac_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
83 | { | |
84 | switch (n) { | |
cfae5c90 | 85 | case S390_A0_REGNUM ... S390_A15_REGNUM: |
73d510c9 DH |
86 | return gdb_get_reg32(mem_buf, env->aregs[n]); |
87 | default: | |
88 | return 0; | |
89 | } | |
90 | } | |
91 | ||
92 | static int cpu_write_ac_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
93 | { | |
94 | switch (n) { | |
95 | case S390_A0_REGNUM ... S390_A15_REGNUM: | |
96 | env->aregs[n] = ldl_p(mem_buf); | |
55b1b753 | 97 | cpu_synchronize_post_init(ENV_GET_CPU(env)); |
73d510c9 DH |
98 | return 4; |
99 | default: | |
100 | return 0; | |
101 | } | |
102 | } | |
103 | ||
104 | /* the values represent the positions in s390-fpr.xml */ | |
105 | #define S390_FPC_REGNUM 0 | |
106 | #define S390_F0_REGNUM 1 | |
107 | #define S390_F15_REGNUM 16 | |
108 | /* total number of registers in s390-fpr.xml */ | |
109 | #define S390_NUM_FP_REGS 17 | |
110 | ||
111 | static int cpu_read_fp_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
112 | { | |
113 | switch (n) { | |
cfae5c90 | 114 | case S390_FPC_REGNUM: |
73d510c9 | 115 | return gdb_get_reg32(mem_buf, env->fpc); |
cfae5c90 | 116 | case S390_F0_REGNUM ... S390_F15_REGNUM: |
c498d8e3 | 117 | return gdb_get_reg64(mem_buf, get_freg(env, n - S390_F0_REGNUM)->ll); |
cfae5c90 AF |
118 | default: |
119 | return 0; | |
120 | } | |
73d510c9 DH |
121 | } |
122 | ||
123 | static int cpu_write_fp_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
124 | { | |
125 | switch (n) { | |
126 | case S390_FPC_REGNUM: | |
127 | env->fpc = ldl_p(mem_buf); | |
128 | return 4; | |
129 | case S390_F0_REGNUM ... S390_F15_REGNUM: | |
c498d8e3 | 130 | get_freg(env, n - S390_F0_REGNUM)->ll = ldtul_p(mem_buf); |
73d510c9 DH |
131 | return 8; |
132 | default: | |
133 | return 0; | |
134 | } | |
135 | } | |
136 | ||
ca343c7a EF |
137 | /* the values represent the positions in s390-vx.xml */ |
138 | #define S390_V0L_REGNUM 0 | |
139 | #define S390_V15L_REGNUM 15 | |
140 | #define S390_V16_REGNUM 16 | |
141 | #define S390_V31_REGNUM 31 | |
142 | /* total number of registers in s390-vx.xml */ | |
143 | #define S390_NUM_VREGS 32 | |
144 | ||
145 | static int cpu_read_vreg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
146 | { | |
147 | int ret; | |
148 | ||
149 | switch (n) { | |
150 | case S390_V0L_REGNUM ... S390_V15L_REGNUM: | |
151 | ret = gdb_get_reg64(mem_buf, env->vregs[n][1].ll); | |
152 | break; | |
153 | case S390_V16_REGNUM ... S390_V31_REGNUM: | |
154 | ret = gdb_get_reg64(mem_buf, env->vregs[n][0].ll); | |
155 | ret += gdb_get_reg64(mem_buf + 8, env->vregs[n][1].ll); | |
156 | break; | |
157 | default: | |
158 | ret = 0; | |
159 | } | |
160 | ||
161 | return ret; | |
162 | } | |
163 | ||
164 | static int cpu_write_vreg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
165 | { | |
166 | switch (n) { | |
167 | case S390_V0L_REGNUM ... S390_V15L_REGNUM: | |
168 | env->vregs[n][1].ll = ldtul_p(mem_buf + 8); | |
169 | return 8; | |
170 | case S390_V16_REGNUM ... S390_V31_REGNUM: | |
171 | env->vregs[n][0].ll = ldtul_p(mem_buf); | |
172 | env->vregs[n][1].ll = ldtul_p(mem_buf + 8); | |
173 | return 16; | |
174 | default: | |
175 | return 0; | |
176 | } | |
177 | } | |
178 | ||
5b9f6345 DH |
179 | /* the values represent the positions in s390-cr.xml */ |
180 | #define S390_C0_REGNUM 0 | |
181 | #define S390_C15_REGNUM 15 | |
182 | /* total number of registers in s390-cr.xml */ | |
183 | #define S390_NUM_C_REGS 16 | |
184 | ||
185 | #ifndef CONFIG_USER_ONLY | |
186 | static int cpu_read_c_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
187 | { | |
188 | switch (n) { | |
189 | case S390_C0_REGNUM ... S390_C15_REGNUM: | |
190 | return gdb_get_regl(mem_buf, env->cregs[n]); | |
191 | default: | |
192 | return 0; | |
193 | } | |
194 | } | |
195 | ||
196 | static int cpu_write_c_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
197 | { | |
198 | switch (n) { | |
199 | case S390_C0_REGNUM ... S390_C15_REGNUM: | |
200 | env->cregs[n] = ldtul_p(mem_buf); | |
201 | if (tcg_enabled()) { | |
202 | tlb_flush(ENV_GET_CPU(env), 1); | |
203 | } | |
204 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
205 | return 8; | |
206 | default: | |
207 | return 0; | |
208 | } | |
209 | } | |
8a641ff6 DH |
210 | |
211 | /* the values represent the positions in s390-virt.xml */ | |
212 | #define S390_VIRT_CKC_REGNUM 0 | |
213 | #define S390_VIRT_CPUTM_REGNUM 1 | |
214 | #define S390_VIRT_BEA_REGNUM 2 | |
215 | #define S390_VIRT_PREFIX_REGNUM 3 | |
216 | #define S390_VIRT_PP_REGNUM 4 | |
217 | #define S390_VIRT_PFT_REGNUM 5 | |
218 | #define S390_VIRT_PFS_REGNUM 6 | |
219 | #define S390_VIRT_PFC_REGNUM 7 | |
220 | /* total number of registers in s390-virt.xml */ | |
221 | #define S390_NUM_VIRT_REGS 8 | |
222 | ||
223 | static int cpu_read_virt_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
224 | { | |
225 | switch (n) { | |
226 | case S390_VIRT_CKC_REGNUM: | |
227 | return gdb_get_regl(mem_buf, env->ckc); | |
228 | case S390_VIRT_CPUTM_REGNUM: | |
229 | return gdb_get_regl(mem_buf, env->cputm); | |
230 | case S390_VIRT_BEA_REGNUM: | |
231 | return gdb_get_regl(mem_buf, env->gbea); | |
232 | case S390_VIRT_PREFIX_REGNUM: | |
233 | return gdb_get_regl(mem_buf, env->psa); | |
234 | case S390_VIRT_PP_REGNUM: | |
235 | return gdb_get_regl(mem_buf, env->pp); | |
236 | case S390_VIRT_PFT_REGNUM: | |
237 | return gdb_get_regl(mem_buf, env->pfault_token); | |
238 | case S390_VIRT_PFS_REGNUM: | |
239 | return gdb_get_regl(mem_buf, env->pfault_select); | |
240 | case S390_VIRT_PFC_REGNUM: | |
241 | return gdb_get_regl(mem_buf, env->pfault_compare); | |
242 | default: | |
243 | return 0; | |
244 | } | |
245 | } | |
246 | ||
247 | static int cpu_write_virt_reg(CPUS390XState *env, uint8_t *mem_buf, int n) | |
248 | { | |
249 | switch (n) { | |
250 | case S390_VIRT_CKC_REGNUM: | |
251 | env->ckc = ldtul_p(mem_buf); | |
252 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
253 | return 8; | |
254 | case S390_VIRT_CPUTM_REGNUM: | |
255 | env->cputm = ldtul_p(mem_buf); | |
256 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
257 | return 8; | |
258 | case S390_VIRT_BEA_REGNUM: | |
259 | env->gbea = ldtul_p(mem_buf); | |
260 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
261 | return 8; | |
262 | case S390_VIRT_PREFIX_REGNUM: | |
263 | env->psa = ldtul_p(mem_buf); | |
264 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
265 | return 8; | |
266 | case S390_VIRT_PP_REGNUM: | |
267 | env->pp = ldtul_p(mem_buf); | |
268 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
269 | return 8; | |
270 | case S390_VIRT_PFT_REGNUM: | |
271 | env->pfault_token = ldtul_p(mem_buf); | |
272 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
273 | return 8; | |
274 | case S390_VIRT_PFS_REGNUM: | |
275 | env->pfault_select = ldtul_p(mem_buf); | |
276 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
277 | return 8; | |
278 | case S390_VIRT_PFC_REGNUM: | |
279 | env->pfault_compare = ldtul_p(mem_buf); | |
280 | cpu_synchronize_post_init(ENV_GET_CPU(env)); | |
281 | return 8; | |
282 | default: | |
283 | return 0; | |
284 | } | |
285 | } | |
5b9f6345 DH |
286 | #endif |
287 | ||
73d510c9 DH |
288 | void s390_cpu_gdb_init(CPUState *cs) |
289 | { | |
290 | gdb_register_coprocessor(cs, cpu_read_ac_reg, | |
291 | cpu_write_ac_reg, | |
292 | S390_NUM_AC_REGS, "s390-acr.xml", 0); | |
293 | ||
294 | gdb_register_coprocessor(cs, cpu_read_fp_reg, | |
295 | cpu_write_fp_reg, | |
296 | S390_NUM_FP_REGS, "s390-fpr.xml", 0); | |
ca343c7a EF |
297 | |
298 | gdb_register_coprocessor(cs, cpu_read_vreg, | |
299 | cpu_write_vreg, | |
300 | S390_NUM_VREGS, "s390-vx.xml", 0); | |
5b9f6345 DH |
301 | |
302 | #ifndef CONFIG_USER_ONLY | |
303 | gdb_register_coprocessor(cs, cpu_read_c_reg, | |
304 | cpu_write_c_reg, | |
305 | S390_NUM_C_REGS, "s390-cr.xml", 0); | |
8a641ff6 DH |
306 | |
307 | if (kvm_enabled()) { | |
308 | gdb_register_coprocessor(cs, cpu_read_virt_reg, | |
309 | cpu_write_virt_reg, | |
310 | S390_NUM_VIRT_REGS, "s390-virt.xml", 0); | |
311 | } | |
5b9f6345 | 312 | #endif |
cfae5c90 | 313 | } |