HVX is a set of wide vector instructions. Machine state includes
vector registers (VRegs)
vector predicate registers (QRegs)
temporary registers for intermediate values
store buffer (masked stores and scatter/gather)
Acked-by: Richard Henderson <richard.hender...@linaro.org>
Signed-off-by: Taylor Simpson <tsimp...@quicinc.com>
---
target/hexagon/cpu.h | 35 +++++++++++++++++-
target/hexagon/hex_arch_types.h | 5 +++
target/hexagon/insn.h | 3 ++
target/hexagon/internal.h | 3 ++
target/hexagon/mmvec/mmvec.h | 82 +++++++++++++++++++++++++++++++++++++++++
target/hexagon/cpu.c | 78 +++++++++++++++++++++++++++++++++++++--
6 files changed, 200 insertions(+), 6 deletions(-)
create mode 100644 target/hexagon/mmvec/mmvec.h
diff --git a/target/hexagon/cpu.h b/target/hexagon/cpu.h
index f90c187..de121d9 100644
--- a/target/hexagon/cpu.h
+++ b/target/hexagon/cpu.h
@@ -26,6 +26,7 @@ typedef struct CPUHexagonState CPUHexagonState;
#include "qemu-common.h"
#include "exec/cpu-defs.h"
#include "hex_regs.h"
+#include "mmvec/mmvec.h"
#define NUM_PREGS 4
#define TOTAL_PER_THREAD_REGS 64
@@ -34,6 +35,7 @@ typedef struct CPUHexagonState CPUHexagonState;
#define STORES_MAX 2
#define REG_WRITES_MAX 32
#define PRED_WRITES_MAX 5 /* 4 insns + endloop */
+#define VSTORES_MAX 2
#define TYPE_HEXAGON_CPU "hexagon-cpu"
@@ -52,6 +54,13 @@ typedef struct {
uint64_t data64;
} MemLog;
+typedef struct {
+ target_ulong va;
+ int size;
+ DECLARE_BITMAP(mask, MAX_VEC_SIZE_BYTES) QEMU_ALIGNED(16);
+ MMVector data QEMU_ALIGNED(16);
+} VStoreLog;
+
#define EXEC_STATUS_OK 0x0000
#define EXEC_STATUS_STOP 0x0002
#define EXEC_STATUS_REPLAY 0x0010
@@ -64,6 +73,9 @@ typedef struct {
#define CLEAR_EXCEPTION (env->status &= (~EXEC_STATUS_EXCEPTION))
#define SET_EXCEPTION (env->status |= EXEC_STATUS_EXCEPTION)
+/* Maximum number of vector temps in a packet */
+#define VECTOR_TEMPS_MAX 4
+
struct CPUHexagonState {
target_ulong gpr[TOTAL_PER_THREAD_REGS];
target_ulong pred[NUM_PREGS];
@@ -97,8 +109,27 @@ struct CPUHexagonState {
target_ulong llsc_val;
uint64_t llsc_val_i64;
- target_ulong is_gather_store_insn;
- target_ulong gather_issued;
+ MMVector VRegs[NUM_VREGS] QEMU_ALIGNED(16);
+ MMVector future_VRegs[VECTOR_TEMPS_MAX] QEMU_ALIGNED(16);
+ MMVector tmp_VRegs[VECTOR_TEMPS_MAX] QEMU_ALIGNED(16);
+
+ VRegMask VRegs_updated;
+
+ MMQReg QRegs[NUM_QREGS] QEMU_ALIGNED(16);
+ MMQReg future_QRegs[NUM_QREGS] QEMU_ALIGNED(16);
+ QRegMask QRegs_updated;
+
+ /* Temporaries used within instructions */
+ MMVectorPair VuuV QEMU_ALIGNED(16);
+ MMVectorPair VvvV QEMU_ALIGNED(16);
+ MMVectorPair VxxV QEMU_ALIGNED(16);
+ MMVector vtmp QEMU_ALIGNED(16);
+ MMQReg qtmp QEMU_ALIGNED(16);
+
+ VStoreLog vstore[VSTORES_MAX];
+ target_ulong vstore_pending[VSTORES_MAX];
+ bool vtcm_pending;
+ VTCMStoreLog vtcm_log;
};
#define HEXAGON_CPU_CLASS(klass) \
diff --git a/target/hexagon/hex_arch_types.h b/target/hexagon/hex_arch_types.h
index d721e1f..78ad607 100644
--- a/target/hexagon/hex_arch_types.h
+++ b/target/hexagon/hex_arch_types.h
@@ -19,6 +19,7 @@
#define HEXAGON_ARCH_TYPES_H
#include "qemu/osdep.h"
+#include "mmvec/mmvec.h"
#include "qemu/int128.h"
/*
@@ -35,4 +36,8 @@ typedef uint64_t size8u_t;
typedef int64_t size8s_t;
typedef Int128 size16s_t;
+typedef MMVector mmvector_t;
+typedef MMVectorPair mmvector_pair_t;
+typedef MMQReg mmqret_t;
+
#endif
diff --git a/target/hexagon/insn.h b/target/hexagon/insn.h
index 2e34591..aa26389 100644
--- a/target/hexagon/insn.h
+++ b/target/hexagon/insn.h
@@ -67,6 +67,9 @@ struct Packet {
bool pkt_has_store_s0;
bool pkt_has_store_s1;
+ bool pkt_has_hvx;
+ Insn *vhist_insn;
+
Insn insn[INSTRUCTIONS_MAX];
};
diff --git a/target/hexagon/internal.h b/target/hexagon/internal.h
index 6b20aff..82ac304 100644
--- a/target/hexagon/internal.h
+++ b/target/hexagon/internal.h
@@ -31,6 +31,9 @@
int hexagon_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int hexagon_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
+
+void hexagon_debug_vreg(CPUHexagonState *env, int regnum);
+void hexagon_debug_qreg(CPUHexagonState *env, int regnum);
void hexagon_debug(CPUHexagonState *env);
extern const char * const hexagon_regnames[TOTAL_PER_THREAD_REGS];
diff --git a/target/hexagon/mmvec/mmvec.h b/target/hexagon/mmvec/mmvec.h
new file mode 100644
index 0000000..52d4707
--- /dev/null
+++ b/target/hexagon/mmvec/mmvec.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights
Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HEXAGON_MMVEC_H
+#define HEXAGON_MMVEC_H
+
+#define MAX_VEC_SIZE_LOGBYTES 7
+#define MAX_VEC_SIZE_BYTES (1 << MAX_VEC_SIZE_LOGBYTES)
+
+#define NUM_VREGS 32
+#define NUM_QREGS 4
+
+typedef uint32_t VRegMask; /* at least NUM_VREGS bits */
+typedef uint32_t QRegMask; /* at least NUM_QREGS bits */
+
+#define VECTOR_SIZE_BYTE (fVECSIZE())
+
+typedef union {
+ uint64_t ud[MAX_VEC_SIZE_BYTES / 8];
+ int64_t d[MAX_VEC_SIZE_BYTES / 8];
+ uint32_t uw[MAX_VEC_SIZE_BYTES / 4];
+ int32_t w[MAX_VEC_SIZE_BYTES / 4];
+ uint16_t uh[MAX_VEC_SIZE_BYTES / 2];
+ int16_t h[MAX_VEC_SIZE_BYTES / 2];
+ uint8_t ub[MAX_VEC_SIZE_BYTES / 1];
+ int8_t b[MAX_VEC_SIZE_BYTES / 1];
+} MMVector;
+
+typedef union {
+ uint64_t ud[2 * MAX_VEC_SIZE_BYTES / 8];
+ int64_t d[2 * MAX_VEC_SIZE_BYTES / 8];
+ uint32_t uw[2 * MAX_VEC_SIZE_BYTES / 4];
+ int32_t w[2 * MAX_VEC_SIZE_BYTES / 4];
+ uint16_t uh[2 * MAX_VEC_SIZE_BYTES / 2];
+ int16_t h[2 * MAX_VEC_SIZE_BYTES / 2];
+ uint8_t ub[2 * MAX_VEC_SIZE_BYTES / 1];
+ int8_t b[2 * MAX_VEC_SIZE_BYTES / 1];
+ MMVector v[2];
+} MMVectorPair;
+
+typedef union {
+ uint64_t ud[MAX_VEC_SIZE_BYTES / 8 / 8];
+ int64_t d[MAX_VEC_SIZE_BYTES / 8 / 8];
+ uint32_t uw[MAX_VEC_SIZE_BYTES / 4 / 8];
+ int32_t w[MAX_VEC_SIZE_BYTES / 4 / 8];
+ uint16_t uh[MAX_VEC_SIZE_BYTES / 2 / 8];
+ int16_t h[MAX_VEC_SIZE_BYTES / 2 / 8];
+ uint8_t ub[MAX_VEC_SIZE_BYTES / 1 / 8];
+ int8_t b[MAX_VEC_SIZE_BYTES / 1 / 8];
+} MMQReg;
+
+typedef struct {
+ MMVector data;
+ DECLARE_BITMAP(mask, MAX_VEC_SIZE_BYTES);
+ target_ulong va[MAX_VEC_SIZE_BYTES];
+ bool op;
+ int op_size;
+} VTCMStoreLog;
+
+
+/* Types of vector register assignment */
+typedef enum {
+ EXT_DFL, /* Default */
+ EXT_NEW, /* New - value used in the same packet */
+ EXT_TMP /* Temp - value used but not stored to register */
+} VRegWriteType;
+
+#endif
diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c
index 3338365..989bd76 100644
--- a/target/hexagon/cpu.c
+++ b/target/hexagon/cpu.c
@@ -113,7 +113,66 @@ static void print_reg(FILE *f, CPUHexagonState *env, int
regnum)
hexagon_regnames[regnum], value);
}
-static void hexagon_dump(CPUHexagonState *env, FILE *f)
+static void print_vreg(FILE *f, CPUHexagonState *env, int regnum,
+ bool skip_if_zero)
+{
+ if (skip_if_zero) {
+ bool nonzero_found = false;
+ for (int i = 0; i < MAX_VEC_SIZE_BYTES; i++) {
+ if (env->VRegs[regnum].ub[i] != 0) {
+ nonzero_found = true;
+ break;
+ }
+ }
+ if (!nonzero_found) {
+ return;
+ }
+ }
+
+ qemu_fprintf(f, " v%d = ( ", regnum);
+ qemu_fprintf(f, "0x%02x", env->VRegs[regnum].ub[MAX_VEC_SIZE_BYTES - 1]);
+ for (int i = MAX_VEC_SIZE_BYTES - 2; i >= 0; i--) {
+ qemu_fprintf(f, ", 0x%02x", env->VRegs[regnum].ub[i]);
+ }
+ qemu_fprintf(f, " )\n");
+}
+
+void hexagon_debug_vreg(CPUHexagonState *env, int regnum)
+{
+ print_vreg(stdout, env, regnum, false);
+}
+
+static void print_qreg(FILE *f, CPUHexagonState *env, int regnum,
+ bool skip_if_zero)
+{
+ if (skip_if_zero) {
+ bool nonzero_found = false;
+ for (int i = 0; i < MAX_VEC_SIZE_BYTES / 8; i++) {
+ if (env->QRegs[regnum].ub[i] != 0) {
+ nonzero_found = true;
+ break;
+ }
+ }
+ if (!nonzero_found) {
+ return;
+ }
+ }
+
+ qemu_fprintf(f, " q%d = ( ", regnum);
+ qemu_fprintf(f, "0x%02x",
+ env->QRegs[regnum].ub[MAX_VEC_SIZE_BYTES / 8 - 1]);
+ for (int i = MAX_VEC_SIZE_BYTES / 8 - 2; i >= 0; i--) {
+ qemu_fprintf(f, ", 0x%02x", env->QRegs[regnum].ub[i]);
+ }
+ qemu_fprintf(f, " )\n");
+}
+
+void hexagon_debug_qreg(CPUHexagonState *env, int regnum)
+{
+ print_qreg(stdout, env, regnum, false);
+}
+
+static void hexagon_dump(CPUHexagonState *env, FILE *f, int flags)
{
HexagonCPU *cpu = env_archcpu(env);
@@ -159,6 +218,17 @@ static void hexagon_dump(CPUHexagonState *env, FILE *f)
print_reg(f, env, HEX_REG_CS1);
#endif
qemu_fprintf(f, "}\n");
+
+ if (flags & CPU_DUMP_FPU) {
+ qemu_fprintf(f, "Vector Registers = {\n");
+ for (int i = 0; i < NUM_VREGS; i++) {
+ print_vreg(f, env, i, true);
+ }
+ for (int i = 0; i < NUM_QREGS; i++) {
+ print_qreg(f, env, i, true);
+ }
+ qemu_fprintf(f, "}\n");
+ }
}
static void hexagon_dump_state(CPUState *cs, FILE *f, int flags)
@@ -166,12 +236,12 @@ static void hexagon_dump_state(CPUState *cs, FILE *f, int
flags)
HexagonCPU *cpu = HEXAGON_CPU(cs);
CPUHexagonState *env = &cpu->env;
- hexagon_dump(env, f);
+ hexagon_dump(env, f, flags);
}
void hexagon_debug(CPUHexagonState *env)
{
- hexagon_dump(env, stdout);
+ hexagon_dump(env, stdout, CPU_DUMP_FPU);
}
static void hexagon_cpu_set_pc(CPUState *cs, vaddr value)
@@ -292,7 +362,7 @@ static void hexagon_cpu_class_init(ObjectClass *c, void
*data)
cc->set_pc = hexagon_cpu_set_pc;
cc->gdb_read_register = hexagon_gdb_read_register;
cc->gdb_write_register = hexagon_gdb_write_register;
- cc->gdb_num_core_regs = TOTAL_PER_THREAD_REGS;
+ cc->gdb_num_core_regs = TOTAL_PER_THREAD_REGS + NUM_VREGS + NUM_QREGS;
cc->gdb_stop_before_watchpoint = true;
cc->disas_set_info = hexagon_cpu_disas_set_info;
cc->tcg_ops = &hexagon_tcg_ops;
--
2.7.4
