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