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
));
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
);
68 return gdb_get_reg32(mem_buf
, env
->regs
[reg
->targno
& 0x0f]);
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
);
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
;
83 const XtensaGdbReg
*reg
= env
->config
->gdb_regmap
.reg
+ n
;
85 if (n
< 0 || n
>= env
->config
->gdb_regmap
.num_regs
) {
97 env
->phys_regs
[(reg
->targno
& 0xff) % env
->config
->nareg
] = tmp
;
98 xtensa_sync_window_from_phys(env
);
102 env
->sregs
[reg
->targno
& 0xff] = tmp
;
106 env
->uregs
[reg
->targno
& 0xff] = tmp
;
112 env
->fregs
[reg
->targno
& 0x0f].f32
[FP_F32_LOW
] = make_float32(tmp
);
115 env
->fregs
[reg
->targno
& 0x0f].f64
= make_float64(tmp
);
118 qemu_log_mask(LOG_UNIMP
, "%s to reg %d of unsupported size %d\n",
119 __func__
, n
, reg
->size
);
124 env
->regs
[reg
->targno
& 0x0f] = tmp
;
128 qemu_log_mask(LOG_UNIMP
, "%s to reg %d of unsupported type %d\n",
129 __func__
, n
, reg
->type
);