ca61e75071
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220606124333.2060567-42-yangxiaojuan@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/*
|
|
* LOONGARCH gdb server stub
|
|
*
|
|
* Copyright (c) 2021 Loongson Technology Corporation Limited
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1+
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "internals.h"
|
|
#include "exec/gdbstub.h"
|
|
|
|
int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
|
|
{
|
|
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
|
|
CPULoongArchState *env = &cpu->env;
|
|
|
|
if (0 <= n && n < 32) {
|
|
return gdb_get_regl(mem_buf, env->gpr[n]);
|
|
} else if (n == 32) {
|
|
return gdb_get_regl(mem_buf, env->pc);
|
|
} else if (n == 33) {
|
|
return gdb_get_regl(mem_buf, env->badaddr);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int loongarch_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
|
|
{
|
|
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
|
|
CPULoongArchState *env = &cpu->env;
|
|
target_ulong tmp = ldtul_p(mem_buf);
|
|
int length = 0;
|
|
|
|
if (0 <= n && n < 32) {
|
|
env->gpr[n] = tmp;
|
|
length = sizeof(target_ulong);
|
|
} else if (n == 32) {
|
|
env->pc = tmp;
|
|
length = sizeof(target_ulong);
|
|
}
|
|
return length;
|
|
}
|
|
|
|
static int loongarch_gdb_get_fpu(CPULoongArchState *env,
|
|
GByteArray *mem_buf, int n)
|
|
{
|
|
if (0 <= n && n < 32) {
|
|
return gdb_get_reg64(mem_buf, env->fpr[n]);
|
|
} else if (32 <= n && n < 40) {
|
|
return gdb_get_reg8(mem_buf, env->cf[n - 32]);
|
|
} else if (n == 40) {
|
|
return gdb_get_reg32(mem_buf, env->fcsr0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int loongarch_gdb_set_fpu(CPULoongArchState *env,
|
|
uint8_t *mem_buf, int n)
|
|
{
|
|
int length = 0;
|
|
|
|
if (0 <= n && n < 32) {
|
|
env->fpr[n] = ldq_p(mem_buf);
|
|
length = 8;
|
|
} else if (32 <= n && n < 40) {
|
|
env->cf[n - 32] = ldub_p(mem_buf);
|
|
length = 1;
|
|
} else if (n == 40) {
|
|
env->fcsr0 = ldl_p(mem_buf);
|
|
length = 4;
|
|
}
|
|
return length;
|
|
}
|
|
|
|
void loongarch_cpu_register_gdb_regs_for_features(CPUState *cs)
|
|
{
|
|
gdb_register_coprocessor(cs, loongarch_gdb_get_fpu, loongarch_gdb_set_fpu,
|
|
41, "loongarch-fpu64.xml", 0);
|
|
}
|