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>
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/*
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* LM32 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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#include "hw/lm32/lm32_pic.h"
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int lm32_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
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{
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LM32CPU *cpu = LM32_CPU(cs);
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CPULM32State *env = &cpu->env;
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if (n < 32) {
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return gdb_get_reg32(mem_buf, env->regs[n]);
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} else {
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switch (n) {
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case 32:
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return gdb_get_reg32(mem_buf, env->pc);
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/* FIXME: put in right exception ID */
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case 33:
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return gdb_get_reg32(mem_buf, 0);
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case 34:
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return gdb_get_reg32(mem_buf, env->eba);
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case 35:
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return gdb_get_reg32(mem_buf, env->deba);
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case 36:
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return gdb_get_reg32(mem_buf, env->ie);
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case 37:
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return gdb_get_reg32(mem_buf, lm32_pic_get_im(env->pic_state));
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case 38:
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return gdb_get_reg32(mem_buf, lm32_pic_get_ip(env->pic_state));
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}
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}
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return 0;
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}
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int lm32_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
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{
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LM32CPU *cpu = LM32_CPU(cs);
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CPUClass *cc = CPU_GET_CLASS(cs);
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CPULM32State *env = &cpu->env;
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uint32_t tmp;
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if (n > cc->gdb_num_core_regs) {
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return 0;
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}
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tmp = ldl_p(mem_buf);
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if (n < 32) {
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env->regs[n] = tmp;
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} else {
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switch (n) {
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case 32:
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env->pc = tmp;
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break;
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case 34:
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env->eba = tmp;
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break;
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case 35:
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env->deba = tmp;
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break;
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case 36:
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env->ie = tmp;
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break;
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case 37:
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lm32_pic_set_im(env->pic_state, tmp);
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break;
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case 38:
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lm32_pic_set_ip(env->pic_state, tmp);
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break;
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}
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}
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return 4;
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}
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