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>
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* m68k 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 2.1 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 m68k_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
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{
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M68kCPU *cpu = M68K_CPU(cs);
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CPUM68KState *env = &cpu->env;
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if (n < 8) {
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/* D0-D7 */
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return gdb_get_reg32(mem_buf, env->dregs[n]);
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} else if (n < 16) {
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/* A0-A7 */
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return gdb_get_reg32(mem_buf, env->aregs[n - 8]);
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} else {
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switch (n) {
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case 16:
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/* SR is made of SR+CCR, CCR is many 1bit flags so uses helper */
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return gdb_get_reg32(mem_buf, env->sr | cpu_m68k_get_ccr(env));
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case 17:
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return gdb_get_reg32(mem_buf, env->pc);
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}
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}
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/*
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* FP registers not included here because they vary between
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* ColdFire and m68k. Use XML bits for these.
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*/
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return 0;
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}
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int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
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{
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M68kCPU *cpu = M68K_CPU(cs);
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CPUM68KState *env = &cpu->env;
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uint32_t tmp;
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tmp = ldl_p(mem_buf);
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if (n < 8) {
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/* D0-D7 */
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env->dregs[n] = tmp;
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} else if (n < 16) {
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/* A0-A7 */
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env->aregs[n - 8] = tmp;
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} else {
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switch (n) {
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case 16:
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cpu_m68k_set_sr(env, tmp);
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break;
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case 17:
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env->pc = tmp;
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break;
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default:
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return 0;
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}
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}
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return 4;
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}
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