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"
23 #include "exec/gdbstub.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;
33 if (n < 0 || n >= env->config->gdb_regmap.num_regs) {
39 return gdb_get_reg32(mem_buf, env->pc);
42 xtensa_sync_phys_from_window(env);
43 return gdb_get_reg32(mem_buf, env->phys_regs[(reg->targno & 0xff)
44 % env->config->nareg]);
47 return gdb_get_reg32(mem_buf, env->sregs[reg->targno & 0xff]);
50 return gdb_get_reg32(mem_buf, env->uregs[reg->targno & 0xff]);
53 i = reg->targno & 0x0f;
56 return gdb_get_reg32(mem_buf,
57 float32_val(env->fregs[i].f32[FP_F32_LOW]));
59 return gdb_get_reg64(mem_buf, float64_val(env->fregs[i].f64));
65 return gdb_get_reg32(mem_buf, env->regs[reg->targno & 0x0f]);
68 qemu_log_mask(LOG_UNIMP, "%s from reg %d of unsupported type %d\n",
69 __func__, n, reg->type);
74 int xtensa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
76 XtensaCPU *cpu = XTENSA_CPU(cs);
77 CPUXtensaState *env = &cpu->env;
79 const XtensaGdbReg *reg = env->config->gdb_regmap.reg + n;
81 if (n < 0 || n >= env->config->gdb_regmap.num_regs) {
93 env->phys_regs[(reg->targno & 0xff) % env->config->nareg] = tmp;
94 xtensa_sync_window_from_phys(env);
98 env->sregs[reg->targno & 0xff] = tmp;
102 env->uregs[reg->targno & 0xff] = tmp;
108 env->fregs[reg->targno & 0x0f].f32[FP_F32_LOW] = make_float32(tmp);
111 env->fregs[reg->targno & 0x0f].f64 = make_float64(tmp);
118 env->regs[reg->targno & 0x0f] = tmp;
122 qemu_log_mask(LOG_UNIMP, "%s to reg %d of unsupported type %d\n",
123 __func__, n, reg->type);