target/loongarch: Add LSX data type VReg
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-2-gaosong@loongson.cn>
diff --git a/linux-user/loongarch64/signal.c b/linux-user/loongarch64/signal.c
index 7c7afb6..bb8efb1 100644
--- a/linux-user/loongarch64/signal.c
+++ b/linux-user/loongarch64/signal.c
@@ -128,7 +128,7 @@
fpu_ctx = (struct target_fpu_context *)(info + 1);
for (i = 0; i < 32; ++i) {
- __put_user(env->fpr[i], &fpu_ctx->regs[i]);
+ __put_user(env->fpr[i].vreg.D(0), &fpu_ctx->regs[i]);
}
__put_user(read_fcc(env), &fpu_ctx->fcc);
__put_user(env->fcsr0, &fpu_ctx->fcsr);
@@ -193,7 +193,7 @@
uint64_t fcc;
for (i = 0; i < 32; ++i) {
- __get_user(env->fpr[i], &fpu_ctx->regs[i]);
+ __get_user(env->fpr[i].vreg.D(0), &fpu_ctx->regs[i]);
}
__get_user(fcc, &fpu_ctx->fcc);
write_fcc(env, fcc);
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 97e6579..18b4122 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -656,7 +656,7 @@
/* fpr */
if (flags & CPU_DUMP_FPU) {
for (i = 0; i < 32; i++) {
- qemu_fprintf(f, " %s %016" PRIx64, fregnames[i], env->fpr[i]);
+ qemu_fprintf(f, " %s %016" PRIx64, fregnames[i], env->fpr[i].vreg.D(0));
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
index e11c875..fd0f619 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -8,6 +8,7 @@
#ifndef LOONGARCH_CPU_H
#define LOONGARCH_CPU_H
+#include "qemu/int128.h"
#include "exec/cpu-defs.h"
#include "fpu/softfloat-types.h"
#include "hw/registerfields.h"
@@ -241,6 +242,24 @@
FIELD(TLB_MISC, VPPN, 13, 35)
FIELD(TLB_MISC, PS, 48, 6)
+#define LSX_LEN (128)
+typedef union VReg {
+ int8_t B[LSX_LEN / 8];
+ int16_t H[LSX_LEN / 16];
+ int32_t W[LSX_LEN / 32];
+ int64_t D[LSX_LEN / 64];
+ uint8_t UB[LSX_LEN / 8];
+ uint16_t UH[LSX_LEN / 16];
+ uint32_t UW[LSX_LEN / 32];
+ uint64_t UD[LSX_LEN / 64];
+ Int128 Q[LSX_LEN / 128];
+}VReg;
+
+typedef union fpr_t fpr_t;
+union fpr_t {
+ VReg vreg;
+};
+
struct LoongArchTLB {
uint64_t tlb_misc;
/* Fields corresponding to CSR_TLBELO0/1 */
@@ -253,7 +272,7 @@
uint64_t gpr[32];
uint64_t pc;
- uint64_t fpr[32];
+ fpr_t fpr[32];
float_status fp_status;
bool cf[8];
diff --git a/target/loongarch/gdbstub.c b/target/loongarch/gdbstub.c
index fa3e034..0752fff 100644
--- a/target/loongarch/gdbstub.c
+++ b/target/loongarch/gdbstub.c
@@ -69,7 +69,7 @@
GByteArray *mem_buf, int n)
{
if (0 <= n && n < 32) {
- return gdb_get_reg64(mem_buf, env->fpr[n]);
+ return gdb_get_reg64(mem_buf, env->fpr[n].vreg.D(0));
} else if (n == 32) {
uint64_t val = read_fcc(env);
return gdb_get_reg64(mem_buf, val);
@@ -85,7 +85,7 @@
int length = 0;
if (0 <= n && n < 32) {
- env->fpr[n] = ldq_p(mem_buf);
+ env->fpr[n].vreg.D(0) = ldq_p(mem_buf);
length = 8;
} else if (n == 32) {
uint64_t val = ldq_p(mem_buf);
diff --git a/target/loongarch/internals.h b/target/loongarch/internals.h
index f01635a..4c5752f 100644
--- a/target/loongarch/internals.h
+++ b/target/loongarch/internals.h
@@ -21,6 +21,28 @@
/* Global bit for huge page */
#define LOONGARCH_HGLOBAL_SHIFT 12
+#if HOST_BIG_ENDIAN
+#define B(x) B[15 - (x)]
+#define H(x) H[7 - (x)]
+#define W(x) W[3 - (x)]
+#define D(x) D[1 - (x)]
+#define UB(x) UB[15 - (x)]
+#define UH(x) UH[7 - (x)]
+#define UW(x) UW[3 - (x)]
+#define UD(x) UD[1 -(x)]
+#define Q(x) Q[x]
+#else
+#define B(x) B[x]
+#define H(x) H[x]
+#define W(x) W[x]
+#define D(x) D[x]
+#define UB(x) UB[x]
+#define UH(x) UH[x]
+#define UW(x) UW[x]
+#define UD(x) UD[x]
+#define Q(x) Q[x]
+#endif
+
void loongarch_translate_init(void);
void loongarch_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
diff --git a/target/loongarch/machine.c b/target/loongarch/machine.c
index b1e523e..7adc1bd 100644
--- a/target/loongarch/machine.c
+++ b/target/loongarch/machine.c
@@ -10,6 +10,72 @@
#include "migration/cpu.h"
#include "internals.h"
+static const VMStateDescription vmstate_fpu_reg = {
+ .name = "fpu_reg",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64(UD(0), VReg),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+#define VMSTATE_FPU_REGS(_field, _state, _start) \
+ VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, 32, 0, \
+ vmstate_fpu_reg, fpr_t)
+
+static bool fpu_needed(void *opaque)
+{
+ LoongArchCPU *cpu = opaque;
+
+ return FIELD_EX64(cpu->env.cpucfg[2], CPUCFG2, FP);
+}
+
+static const VMStateDescription vmstate_fpu = {
+ .name = "cpu/fpu",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = fpu_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_FPU_REGS(env.fpr, LoongArchCPU, 0),
+ VMSTATE_UINT32(env.fcsr0, LoongArchCPU),
+ VMSTATE_BOOL_ARRAY(env.cf, LoongArchCPU, 8),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static const VMStateDescription vmstate_lsxh_reg = {
+ .name = "lsxh_reg",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64(UD(1), VReg),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+#define VMSTATE_LSXH_REGS(_field, _state, _start) \
+ VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, 32, 0, \
+ vmstate_lsxh_reg, fpr_t)
+
+static bool lsx_needed(void *opaque)
+{
+ LoongArchCPU *cpu = opaque;
+
+ return FIELD_EX64(cpu->env.cpucfg[2], CPUCFG2, LSX);
+}
+
+static const VMStateDescription vmstate_lsx = {
+ .name = "cpu/lsx",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = lsx_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_LSXH_REGS(env.fpr, LoongArchCPU, 0),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
/* TLB state */
const VMStateDescription vmstate_tlb = {
.name = "cpu/tlb",
@@ -24,18 +90,13 @@
};
/* LoongArch CPU state */
-
const VMStateDescription vmstate_loongarch_cpu = {
.name = "cpu",
- .version_id = 0,
- .minimum_version_id = 0,
+ .version_id = 1,
+ .minimum_version_id = 1,
.fields = (VMStateField[]) {
-
VMSTATE_UINTTL_ARRAY(env.gpr, LoongArchCPU, 32),
VMSTATE_UINTTL(env.pc, LoongArchCPU),
- VMSTATE_UINT64_ARRAY(env.fpr, LoongArchCPU, 32),
- VMSTATE_UINT32(env.fcsr0, LoongArchCPU),
- VMSTATE_BOOL_ARRAY(env.cf, LoongArchCPU, 8),
/* Remaining CSRs */
VMSTATE_UINT64(env.CSR_CRMD, LoongArchCPU),
@@ -99,4 +160,8 @@
VMSTATE_END_OF_LIST()
},
+ .subsections = (const VMStateDescription*[]) {
+ &vmstate_fpu,
+ &vmstate_lsx,
+ }
};
