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Andreas Färber2f937732013-07-07 12:42:52 +02001/*
2 * SuperH 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 */
Peter Maydell9d4c9942016-01-26 18:17:20 +000020#include "qemu/osdep.h"
Andreas Färber5b50e792013-06-29 04:18:45 +020021#include "qemu-common.h"
Paolo Bonzini33c11872016-03-15 16:58:45 +010022#include "cpu.h"
Andreas Färber5b50e792013-06-29 04:18:45 +020023#include "exec/gdbstub.h"
Andreas Färber2f937732013-07-07 12:42:52 +020024
25/* Hint: Use "set architecture sh4" in GDB to see fpu registers */
26/* FIXME: We should use XML for this. */
27
Andreas Färber5b50e792013-06-29 04:18:45 +020028int superh_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
Andreas Färber2f937732013-07-07 12:42:52 +020029{
Andreas Färber5b50e792013-06-29 04:18:45 +020030 SuperHCPU *cpu = SUPERH_CPU(cs);
31 CPUSH4State *env = &cpu->env;
32
Andreas Färber2f937732013-07-07 12:42:52 +020033 switch (n) {
34 case 0 ... 7:
Aurelien Jarno5ed9a252015-05-25 01:28:56 +020035 if ((env->sr & (1u << SR_MD)) && (env->sr & (1u << SR_RB))) {
Andreas Färber986a2992013-07-07 13:05:05 +020036 return gdb_get_regl(mem_buf, env->gregs[n + 16]);
Andreas Färber2f937732013-07-07 12:42:52 +020037 } else {
Andreas Färber986a2992013-07-07 13:05:05 +020038 return gdb_get_regl(mem_buf, env->gregs[n]);
Andreas Färber2f937732013-07-07 12:42:52 +020039 }
40 case 8 ... 15:
Andreas Färber986a2992013-07-07 13:05:05 +020041 return gdb_get_regl(mem_buf, env->gregs[n]);
Andreas Färber2f937732013-07-07 12:42:52 +020042 case 16:
Andreas Färber986a2992013-07-07 13:05:05 +020043 return gdb_get_regl(mem_buf, env->pc);
Andreas Färber2f937732013-07-07 12:42:52 +020044 case 17:
Andreas Färber986a2992013-07-07 13:05:05 +020045 return gdb_get_regl(mem_buf, env->pr);
Andreas Färber2f937732013-07-07 12:42:52 +020046 case 18:
Andreas Färber986a2992013-07-07 13:05:05 +020047 return gdb_get_regl(mem_buf, env->gbr);
Andreas Färber2f937732013-07-07 12:42:52 +020048 case 19:
Andreas Färber986a2992013-07-07 13:05:05 +020049 return gdb_get_regl(mem_buf, env->vbr);
Andreas Färber2f937732013-07-07 12:42:52 +020050 case 20:
Andreas Färber986a2992013-07-07 13:05:05 +020051 return gdb_get_regl(mem_buf, env->mach);
Andreas Färber2f937732013-07-07 12:42:52 +020052 case 21:
Andreas Färber986a2992013-07-07 13:05:05 +020053 return gdb_get_regl(mem_buf, env->macl);
Andreas Färber2f937732013-07-07 12:42:52 +020054 case 22:
Aurelien Jarno34086942015-05-25 01:28:56 +020055 return gdb_get_regl(mem_buf, cpu_read_sr(env));
Andreas Färber2f937732013-07-07 12:42:52 +020056 case 23:
Andreas Färber986a2992013-07-07 13:05:05 +020057 return gdb_get_regl(mem_buf, env->fpul);
Andreas Färber2f937732013-07-07 12:42:52 +020058 case 24:
Andreas Färber986a2992013-07-07 13:05:05 +020059 return gdb_get_regl(mem_buf, env->fpscr);
Andreas Färber2f937732013-07-07 12:42:52 +020060 case 25 ... 40:
61 if (env->fpscr & FPSCR_FR) {
62 stfl_p(mem_buf, env->fregs[n - 9]);
63 } else {
64 stfl_p(mem_buf, env->fregs[n - 25]);
65 }
66 return 4;
67 case 41:
Andreas Färber986a2992013-07-07 13:05:05 +020068 return gdb_get_regl(mem_buf, env->ssr);
Andreas Färber2f937732013-07-07 12:42:52 +020069 case 42:
Andreas Färber986a2992013-07-07 13:05:05 +020070 return gdb_get_regl(mem_buf, env->spc);
Andreas Färber2f937732013-07-07 12:42:52 +020071 case 43 ... 50:
Andreas Färber986a2992013-07-07 13:05:05 +020072 return gdb_get_regl(mem_buf, env->gregs[n - 43]);
Andreas Färber2f937732013-07-07 12:42:52 +020073 case 51 ... 58:
Andreas Färber986a2992013-07-07 13:05:05 +020074 return gdb_get_regl(mem_buf, env->gregs[n - (51 - 16)]);
Andreas Färber2f937732013-07-07 12:42:52 +020075 }
76
77 return 0;
78}
79
Andreas Färber5b50e792013-06-29 04:18:45 +020080int superh_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
Andreas Färber2f937732013-07-07 12:42:52 +020081{
Andreas Färber5b50e792013-06-29 04:18:45 +020082 SuperHCPU *cpu = SUPERH_CPU(cs);
83 CPUSH4State *env = &cpu->env;
84
Andreas Färber2f937732013-07-07 12:42:52 +020085 switch (n) {
86 case 0 ... 7:
Aurelien Jarno5ed9a252015-05-25 01:28:56 +020087 if ((env->sr & (1u << SR_MD)) && (env->sr & (1u << SR_RB))) {
Andreas Färber2f937732013-07-07 12:42:52 +020088 env->gregs[n + 16] = ldl_p(mem_buf);
89 } else {
90 env->gregs[n] = ldl_p(mem_buf);
91 }
92 break;
93 case 8 ... 15:
94 env->gregs[n] = ldl_p(mem_buf);
95 break;
96 case 16:
97 env->pc = ldl_p(mem_buf);
98 break;
99 case 17:
100 env->pr = ldl_p(mem_buf);
101 break;
102 case 18:
103 env->gbr = ldl_p(mem_buf);
104 break;
105 case 19:
106 env->vbr = ldl_p(mem_buf);
107 break;
108 case 20:
109 env->mach = ldl_p(mem_buf);
110 break;
111 case 21:
112 env->macl = ldl_p(mem_buf);
113 break;
114 case 22:
Aurelien Jarno34086942015-05-25 01:28:56 +0200115 cpu_write_sr(env, ldl_p(mem_buf));
Andreas Färber2f937732013-07-07 12:42:52 +0200116 break;
117 case 23:
118 env->fpul = ldl_p(mem_buf);
119 break;
120 case 24:
121 env->fpscr = ldl_p(mem_buf);
122 break;
123 case 25 ... 40:
124 if (env->fpscr & FPSCR_FR) {
125 env->fregs[n - 9] = ldfl_p(mem_buf);
126 } else {
127 env->fregs[n - 25] = ldfl_p(mem_buf);
128 }
129 break;
130 case 41:
131 env->ssr = ldl_p(mem_buf);
132 break;
133 case 42:
134 env->spc = ldl_p(mem_buf);
135 break;
136 case 43 ... 50:
137 env->gregs[n - 43] = ldl_p(mem_buf);
138 break;
139 case 51 ... 58:
140 env->gregs[n - (51 - 16)] = ldl_p(mem_buf);
141 break;
142 default:
143 return 0;
144 }
145
146 return 4;
147}