591243846f
This avoids having to manually swap them around when swapping to and from PALmode. We simply encode the shadow registers into the translation. The VMStateDescription version changes, because the meaning of "shadow" changes in the save file when in PALmode. It would be possible to fix this, but I don't think it's worth the effort. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
94 lines
2.4 KiB
C
94 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 "config.h"
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#include "qemu-common.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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