a010bdbe71
Instead of passing a pointer to memory now just extend the GByteArray to all the read register helpers. They can then safely append their data through the normal way. We don't bother with this abstraction for write registers as we have already ensured the buffer being copied from is the correct size. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Damien Hedde <damien.hedde@greensocs.com> Message-Id: <20200316172155.971-15-alex.bennee@linaro.org>
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 "qemu/osdep.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, GByteArray *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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