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/*
* Alpha 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"
int alpha_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
{
AlphaCPU *cpu = ALPHA_CPU(cs);
CPUAlphaState *env = &cpu->env;
uint64_t val;
CPU_DoubleU d;
switch (n) {
case 0 ... 30:
val = cpu_alpha_load_gr(env, n);
break;
case 32 ... 62:
d.d = env->fir[n - 32];
val = d.ll;
break;
case 63:
val = cpu_alpha_load_fpcr(env);
break;
case 64:
val = env->pc;
break;
case 66:
val = env->unique;
break;
case 31:
case 65:
/* 31 really is the zero register; 65 is unassigned in the
gdb protocol, but is still required to occupy 8 bytes. */
val = 0;
break;
default:
return 0;
}
return gdb_get_regl(mem_buf, val);
}
int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
{
AlphaCPU *cpu = ALPHA_CPU(cs);
CPUAlphaState *env = &cpu->env;
target_ulong tmp = ldtul_p(mem_buf);
CPU_DoubleU d;
switch (n) {
case 0 ... 30:
cpu_alpha_store_gr(env, n, tmp);
break;
case 32 ... 62:
d.ll = tmp;
env->fir[n - 32] = d.d;
break;
case 63:
cpu_alpha_store_fpcr(env, tmp);
break;
case 64:
env->pc = tmp;
break;
case 66:
env->unique = tmp;
break;
case 31:
case 65:
/* 31 really is the zero register; 65 is unassigned in the
gdb protocol, but is still required to occupy 8 bytes. */
break;
default:
return 0;
}
return 8;
}
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