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Hexagon (gdbstub): add HVX support

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Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Co-authored-by: Brian Cain <bcain@quicinc.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
Co-authored-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <17cb32f34d469f705c3cc066a3583935352ee048.1683214375.git.quic_mathbern@quicinc.com>
This commit is contained in:
Taylor Simpson 2023-05-04 12:37:35 -03:00
parent b0bd9d8adf
commit b647652ee5
5 changed files with 173 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
target/hexagon/cpu.c
View file

@ -24,6 +24,7 @@
#include "hw/qdev-properties.h"
#include "fpu/softfloat-helpers.h"
#include "tcg/tcg.h"
#include "exec/gdbstub.h"
static void hexagon_v67_cpu_init(Object *obj) { }
static void hexagon_v68_cpu_init(Object *obj) { }
@ -339,6 +340,11 @@ static void hexagon_cpu_realize(DeviceState *dev, Error **errp)
return;
}
gdb_register_coprocessor(cs, hexagon_hvx_gdb_read_register,
hexagon_hvx_gdb_write_register,
NUM_VREGS + NUM_QREGS,
"hexagon-hvx.xml", 0);
qemu_init_vcpu(cs);
cpu_reset(cs);

68
target/hexagon/gdbstub.c
View file

@ -60,3 +60,71 @@ int hexagon_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
g_assert_not_reached();
}
static int gdb_get_vreg(CPUHexagonState *env, GByteArray *mem_buf, int n)
{
int total = 0;
int i;
for (i = 0; i < ARRAY_SIZE(env->VRegs[n].uw); i++) {
total += gdb_get_regl(mem_buf, env->VRegs[n].uw[i]);
}
return total;
}
static int gdb_get_qreg(CPUHexagonState *env, GByteArray *mem_buf, int n)
{
int total = 0;
int i;
for (i = 0; i < ARRAY_SIZE(env->QRegs[n].uw); i++) {
total += gdb_get_regl(mem_buf, env->QRegs[n].uw[i]);
}
return total;
}
int hexagon_hvx_gdb_read_register(CPUHexagonState *env, GByteArray *mem_buf, int n)
{
if (n < NUM_VREGS) {
return gdb_get_vreg(env, mem_buf, n);
}
n -= NUM_VREGS;
if (n < NUM_QREGS) {
return gdb_get_qreg(env, mem_buf, n);
}
g_assert_not_reached();
}
static int gdb_put_vreg(CPUHexagonState *env, uint8_t *mem_buf, int n)
{
int i;
for (i = 0; i < ARRAY_SIZE(env->VRegs[n].uw); i++) {
env->VRegs[n].uw[i] = ldtul_p(mem_buf);
mem_buf += 4;
}
return MAX_VEC_SIZE_BYTES;
}
static int gdb_put_qreg(CPUHexagonState *env, uint8_t *mem_buf, int n)
{
int i;
for (i = 0; i < ARRAY_SIZE(env->QRegs[n].uw); i++) {
env->QRegs[n].uw[i] = ldtul_p(mem_buf);
mem_buf += 4;
}
return MAX_VEC_SIZE_BYTES / 8;
}
int hexagon_hvx_gdb_write_register(CPUHexagonState *env, uint8_t *mem_buf, int n)
{
if (n < NUM_VREGS) {
return gdb_put_vreg(env, mem_buf, n);
}
n -= NUM_VREGS;
if (n < NUM_QREGS) {
return gdb_put_qreg(env, mem_buf, n);
}
g_assert_not_reached();
}

2
target/hexagon/internal.h
View file

@ -33,6 +33,8 @@
int hexagon_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int hexagon_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
int hexagon_hvx_gdb_read_register(CPUHexagonState *env, GByteArray *mem_buf, int n);
int hexagon_hvx_gdb_write_register(CPUHexagonState *env, uint8_t *mem_buf, int n);
void hexagon_debug_vreg(CPUHexagonState *env, int regnum);
void hexagon_debug_qreg(CPUHexagonState *env, int regnum);