aboutsummaryrefslogtreecommitdiff
path: root/target-sparc/gdbstub.c
blob: ffc2baa2e74cb3981696add91500e2d598ba9229 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/*
 * SPARC gdb server stub
 *
 * Copyright (c) 2003-2005 Fabrice Bellard
 * Copyright (c) 2013 SUSE LINUX Products GmbH
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "cpu.h"
#include "exec/gdbstub.h"

#ifdef TARGET_ABI32
#define gdb_get_rega(buf, val) gdb_get_reg32(buf, val)
#else
#define gdb_get_rega(buf, val) gdb_get_regl(buf, val)
#endif

int sparc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
{
    SPARCCPU *cpu = SPARC_CPU(cs);
    CPUSPARCState *env = &cpu->env;

    if (n < 8) {
        /* g0..g7 */
        return gdb_get_rega(mem_buf, env->gregs[n]);
    }
    if (n < 32) {
        /* register window */
        return gdb_get_rega(mem_buf, env->regwptr[n - 8]);
    }
#if defined(TARGET_ABI32) || !defined(TARGET_SPARC64)
    if (n < 64) {
        /* fprs */
        if (n & 1) {
            return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.lower);
        } else {
            return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.upper);
        }
    }
    /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
    switch (n) {
    case 64:
        return gdb_get_rega(mem_buf, env->y);
    case 65:
        return gdb_get_rega(mem_buf, cpu_get_psr(env));
    case 66:
        return gdb_get_rega(mem_buf, env->wim);
    case 67:
        return gdb_get_rega(mem_buf, env->tbr);
    case 68:
        return gdb_get_rega(mem_buf, env->pc);
    case 69:
        return gdb_get_rega(mem_buf, env->npc);
    case 70:
        return gdb_get_rega(mem_buf, env->fsr);
    case 71:
        return gdb_get_rega(mem_buf, 0); /* csr */
    default:
        return gdb_get_rega(mem_buf, 0);
    }
#else
    if (n < 64) {
        /* f0-f31 */
        if (n & 1) {
            return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.lower);
        } else {
            return gdb_get_reg32(mem_buf, env->fpr[(n - 32) / 2].l.upper);
        }
    }
    if (n < 80) {
        /* f32-f62 (double width, even numbers only) */
        return gdb_get_reg64(mem_buf, env->fpr[(n - 32) / 2].ll);
    }
    switch (n) {
    case 80:
        return gdb_get_regl(mem_buf, env->pc);
    case 81:
        return gdb_get_regl(mem_buf, env->npc);
    case 82:
        return gdb_get_regl(mem_buf, (cpu_get_ccr(env) << 32) |
                                     ((env->asi & 0xff) << 24) |
                                     ((env->pstate & 0xfff) << 8) |
                                     cpu_get_cwp64(env));
    case 83:
        return gdb_get_regl(mem_buf, env->fsr);
    case 84:
        return gdb_get_regl(mem_buf, env->fprs);
    case 85:
        return gdb_get_regl(mem_buf, env->y);
    }
#endif
    return 0;
}

int sparc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
{
    SPARCCPU *cpu = SPARC_CPU(cs);
    CPUSPARCState *env = &cpu->env;
#if defined(TARGET_ABI32)
    abi_ulong tmp;

    tmp = ldl_p(mem_buf);
#else
    target_ulong tmp;

    tmp = ldtul_p(mem_buf);
#endif

    if (n < 8) {
        /* g0..g7 */
        env->gregs[n] = tmp;
    } else if (n < 32) {
        /* register window */
        env->regwptr[n - 8] = tmp;
    }
#if defined(TARGET_ABI32) || !defined(TARGET_SPARC64)
    else if (n < 64) {
        /* fprs */
        /* f0-f31 */
        if (n & 1) {
            env->fpr[(n - 32) / 2].l.lower = tmp;
        } else {
            env->fpr[(n - 32) / 2].l.upper = tmp;
        }
    } else {
        /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
        switch (n) {
        case 64:
            env->y = tmp;
            break;
        case 65:
            cpu_put_psr(env, tmp);
            break;
        case 66:
            env->wim = tmp;
            break;
        case 67:
            env->tbr = tmp;
            break;
        case 68:
            env->pc = tmp;
            break;
        case 69:
            env->npc = tmp;
            break;
        case 70:
            env->fsr = tmp;
            break;
        default:
            return 0;
        }
    }
    return 4;
#else
    else if (n < 64) {
        /* f0-f31 */
        tmp = ldl_p(mem_buf);
        if (n & 1) {
            env->fpr[(n - 32) / 2].l.lower = tmp;
        } else {
            env->fpr[(n - 32) / 2].l.upper = tmp;
        }
        return 4;
    } else if (n < 80) {
        /* f32-f62 (double width, even numbers only) */
        env->fpr[(n - 32) / 2].ll = tmp;
    } else {
        switch (n) {
        case 80:
            env->pc = tmp;
            break;
        case 81:
            env->npc = tmp;
            break;
        case 82:
            cpu_put_ccr(env, tmp >> 32);
            env->asi = (tmp >> 24) & 0xff;
            env->pstate = (tmp >> 8) & 0xfff;
            cpu_put_cwp64(env, tmp & 0xff);
            break;
        case 83:
            env->fsr = tmp;
            break;
        case 84:
            env->fprs = tmp;
            break;
        case 85:
            env->y = tmp;
            break;
        default:
            return 0;
        }
    }
    return 8;
#endif
}