95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/*
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* Alpha gdb server stub
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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* Copyright (c) 2013 SUSE LINUX Products GmbH
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "cpu.h"
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#include "exec/gdbstub.h"
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int alpha_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
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{
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AlphaCPU *cpu = ALPHA_CPU(cs);
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CPUAlphaState *env = &cpu->env;
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uint64_t val;
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CPU_DoubleU d;
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switch (n) {
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case 0 ... 30:
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val = cpu_alpha_load_gr(env, n);
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break;
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case 32 ... 62:
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d.d = env->fir[n - 32];
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val = d.ll;
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break;
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case 63:
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val = cpu_alpha_load_fpcr(env);
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break;
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case 64:
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val = env->pc;
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break;
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case 66:
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val = env->unique;
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break;
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case 31:
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case 65:
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/* 31 really is the zero register; 65 is unassigned in the
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gdb protocol, but is still required to occupy 8 bytes. */
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val = 0;
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break;
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default:
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return 0;
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}
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return gdb_get_regl(mem_buf, val);
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}
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int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
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{
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AlphaCPU *cpu = ALPHA_CPU(cs);
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CPUAlphaState *env = &cpu->env;
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target_ulong tmp = ldtul_p(mem_buf);
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CPU_DoubleU d;
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switch (n) {
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case 0 ... 30:
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cpu_alpha_store_gr(env, n, tmp);
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break;
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case 32 ... 62:
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d.ll = tmp;
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env->fir[n - 32] = d.d;
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break;
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case 63:
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cpu_alpha_store_fpcr(env, tmp);
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break;
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case 64:
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env->pc = tmp;
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break;
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case 66:
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env->unique = tmp;
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break;
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case 31:
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case 65:
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/* 31 really is the zero register; 65 is unassigned in the
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gdb protocol, but is still required to occupy 8 bytes. */
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break;
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default:
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return 0;
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}
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return 8;
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}
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