qapi: drop the sentinel in enum array
[qemu/armbru.git] / target / xtensa / gdbstub.c
blobd78a1b437dbf967c1f221c10b06b936ecda048be
1 /*
2 * Xtensa gdb server stub
4 * Copyright (c) 2003-2005 Fabrice Bellard
5 * Copyright (c) 2013 SUSE LINUX Products GmbH
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.
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.
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/>.
20 #include "qemu/osdep.h"
21 #include "qemu-common.h"
22 #include "cpu.h"
23 #include "exec/gdbstub.h"
24 #include "qemu/log.h"
26 int xtensa_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
28 XtensaCPU *cpu = XTENSA_CPU(cs);
29 CPUXtensaState *env = &cpu->env;
30 const XtensaGdbReg *reg = env->config->gdb_regmap.reg + n;
31 unsigned i;
33 if (n < 0 || n >= env->config->gdb_regmap.num_regs) {
34 return 0;
37 switch (reg->type) {
38 case 9: /*pc*/
39 return gdb_get_reg32(mem_buf, env->pc);
41 case 1: /*ar*/
42 xtensa_sync_phys_from_window(env);
43 return gdb_get_reg32(mem_buf, env->phys_regs[(reg->targno & 0xff)
44 % env->config->nareg]);
46 case 2: /*SR*/
47 return gdb_get_reg32(mem_buf, env->sregs[reg->targno & 0xff]);
49 case 3: /*UR*/
50 return gdb_get_reg32(mem_buf, env->uregs[reg->targno & 0xff]);
52 case 4: /*f*/
53 i = reg->targno & 0x0f;
54 switch (reg->size) {
55 case 4:
56 return gdb_get_reg32(mem_buf,
57 float32_val(env->fregs[i].f32[FP_F32_LOW]));
58 case 8:
59 return gdb_get_reg64(mem_buf, float64_val(env->fregs[i].f64));
60 default:
61 qemu_log_mask(LOG_UNIMP, "%s from reg %d of unsupported size %d\n",
62 __func__, n, reg->size);
63 memset(mem_buf, 0, reg->size);
64 return reg->size;
67 case 8: /*a*/
68 return gdb_get_reg32(mem_buf, env->regs[reg->targno & 0x0f]);
70 default:
71 qemu_log_mask(LOG_UNIMP, "%s from reg %d of unsupported type %d\n",
72 __func__, n, reg->type);
73 memset(mem_buf, 0, reg->size);
74 return reg->size;
78 int xtensa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
80 XtensaCPU *cpu = XTENSA_CPU(cs);
81 CPUXtensaState *env = &cpu->env;
82 uint32_t tmp;
83 const XtensaGdbReg *reg = env->config->gdb_regmap.reg + n;
85 if (n < 0 || n >= env->config->gdb_regmap.num_regs) {
86 return 0;
89 tmp = ldl_p(mem_buf);
91 switch (reg->type) {
92 case 9: /*pc*/
93 env->pc = tmp;
94 break;
96 case 1: /*ar*/
97 env->phys_regs[(reg->targno & 0xff) % env->config->nareg] = tmp;
98 xtensa_sync_window_from_phys(env);
99 break;
101 case 2: /*SR*/
102 env->sregs[reg->targno & 0xff] = tmp;
103 break;
105 case 3: /*UR*/
106 env->uregs[reg->targno & 0xff] = tmp;
107 break;
109 case 4: /*f*/
110 switch (reg->size) {
111 case 4:
112 env->fregs[reg->targno & 0x0f].f32[FP_F32_LOW] = make_float32(tmp);
113 return 4;
114 case 8:
115 env->fregs[reg->targno & 0x0f].f64 = make_float64(tmp);
116 return 8;
117 default:
118 qemu_log_mask(LOG_UNIMP, "%s to reg %d of unsupported size %d\n",
119 __func__, n, reg->size);
120 return reg->size;
123 case 8: /*a*/
124 env->regs[reg->targno & 0x0f] = tmp;
125 break;
127 default:
128 qemu_log_mask(LOG_UNIMP, "%s to reg %d of unsupported type %d\n",
129 __func__, n, reg->type);
130 return reg->size;
133 return 4;