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target/loongarch: Implement vadd/vsub

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This patch includes:
- VADD.{B/H/W/D/Q};
- VSUB.{B/H/W/D/Q}.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-5-gaosong@loongson.cn>
This commit is contained in:
Song Gao 2023-05-04 20:27:30 +08:00
parent a3f3db5cda
commit 57b4f1ac18
No known key found for this signature in database
GPG Key ID: 40A2FFF239263EDF
5 changed files with 139 additions and 0 deletions
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23
target/loongarch/disas.c
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@ -784,3 +784,26 @@ PCADD_INSN(pcaddi)
PCADD_INSN(pcalau12i)
PCADD_INSN(pcaddu12i)
PCADD_INSN(pcaddu18i)
#define INSN_LSX(insn, type) \
static bool trans_##insn(DisasContext *ctx, arg_##type * a) \
{ \
output_##type(ctx, a, #insn); \
return true; \
}
static void output_vvv(DisasContext *ctx, arg_vvv *a, const char *mnemonic)
{
output(ctx, mnemonic, "v%d, v%d, v%d", a->vd, a->vj, a->vk);
}
INSN_LSX(vadd_b, vvv)
INSN_LSX(vadd_h, vvv)
INSN_LSX(vadd_w, vvv)
INSN_LSX(vadd_d, vvv)
INSN_LSX(vadd_q, vvv)
INSN_LSX(vsub_b, vvv)
INSN_LSX(vsub_h, vvv)
INSN_LSX(vsub_w, vvv)
INSN_LSX(vsub_d, vvv)
INSN_LSX(vsub_q, vvv)

69
target/loongarch/insn_trans/trans_lsx.c.inc
View File

@ -14,3 +14,72 @@
#else
#define CHECK_SXE
#endif
static bool gen_vvv(DisasContext *ctx, arg_vvv *a,
void (*func)(TCGv_ptr, TCGv_i32, TCGv_i32, TCGv_i32))
{
TCGv_i32 vd = tcg_constant_i32(a->vd);
TCGv_i32 vj = tcg_constant_i32(a->vj);
TCGv_i32 vk = tcg_constant_i32(a->vk);
CHECK_SXE;
func(cpu_env, vd, vj, vk);
return true;
}
static bool gvec_vvv(DisasContext *ctx, arg_vvv *a, MemOp mop,
void (*func)(unsigned, uint32_t, uint32_t,
uint32_t, uint32_t, uint32_t))
{
uint32_t vd_ofs, vj_ofs, vk_ofs;
CHECK_SXE;
vd_ofs = vec_full_offset(a->vd);
vj_ofs = vec_full_offset(a->vj);
vk_ofs = vec_full_offset(a->vk);
func(mop, vd_ofs, vj_ofs, vk_ofs, 16, ctx->vl/8);
return true;
}
TRANS(vadd_b, gvec_vvv, MO_8, tcg_gen_gvec_add)
TRANS(vadd_h, gvec_vvv, MO_16, tcg_gen_gvec_add)
TRANS(vadd_w, gvec_vvv, MO_32, tcg_gen_gvec_add)
TRANS(vadd_d, gvec_vvv, MO_64, tcg_gen_gvec_add)
#define VADDSUB_Q(NAME) \
static bool trans_v## NAME ##_q(DisasContext *ctx, arg_vvv *a) \
{ \
TCGv_i64 rh, rl, ah, al, bh, bl; \
\
CHECK_SXE; \
\
rh = tcg_temp_new_i64(); \
rl = tcg_temp_new_i64(); \
ah = tcg_temp_new_i64(); \
al = tcg_temp_new_i64(); \
bh = tcg_temp_new_i64(); \
bl = tcg_temp_new_i64(); \
\
get_vreg64(ah, a->vj, 1); \
get_vreg64(al, a->vj, 0); \
get_vreg64(bh, a->vk, 1); \
get_vreg64(bl, a->vk, 0); \
\
tcg_gen_## NAME ##2_i64(rl, rh, al, ah, bl, bh); \
\
set_vreg64(rh, a->vd, 1); \
set_vreg64(rl, a->vd, 0); \
\
return true; \
}
VADDSUB_Q(add)
VADDSUB_Q(sub)
TRANS(vsub_b, gvec_vvv, MO_8, tcg_gen_gvec_sub)
TRANS(vsub_h, gvec_vvv, MO_16, tcg_gen_gvec_sub)
TRANS(vsub_w, gvec_vvv, MO_32, tcg_gen_gvec_sub)
TRANS(vsub_d, gvec_vvv, MO_64, tcg_gen_gvec_sub)

22
target/loongarch/insns.decode
View File

@ -485,3 +485,25 @@ ldpte 0000 01100100 01 ........ ..... 00000 @j_i
ertn 0000 01100100 10000 01110 00000 00000 @empty
idle 0000 01100100 10001 ............... @i15
dbcl 0000 00000010 10101 ............... @i15
#
# LSX Argument sets
#
&vvv vd vj vk
#
# LSX Formats
#
@vvv .... ........ ..... vk:5 vj:5 vd:5 &vvv
vadd_b 0111 00000000 10100 ..... ..... ..... @vvv
vadd_h 0111 00000000 10101 ..... ..... ..... @vvv
vadd_w 0111 00000000 10110 ..... ..... ..... @vvv
vadd_d 0111 00000000 10111 ..... ..... ..... @vvv
vadd_q 0111 00010010 11010 ..... ..... ..... @vvv
vsub_b 0111 00000000 11000 ..... ..... ..... @vvv
vsub_h 0111 00000000 11001 ..... ..... ..... @vvv
vsub_w 0111 00000000 11010 ..... ..... ..... @vvv
vsub_d 0111 00000000 11011 ..... ..... ..... @vvv
vsub_q 0111 00010010 11011 ..... ..... ..... @vvv

24
target/loongarch/translate.c
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@ -8,6 +8,8 @@
#include "qemu/osdep.h"
#include "cpu.h"
#include "tcg/tcg-op.h"
#include "tcg/tcg-op-gvec.h"
#include "exec/translator.h"
#include "exec/helper-proto.h"
#include "exec/helper-gen.h"
@ -29,6 +31,23 @@ TCGv_i64 cpu_fpr[32];
#define DISAS_EXIT DISAS_TARGET_1
#define DISAS_EXIT_UPDATE DISAS_TARGET_2
static inline int vec_full_offset(int regno)
{
return offsetof(CPULoongArchState, fpr[regno]);
}
static inline void get_vreg64(TCGv_i64 dest, int regno, int index)
{
tcg_gen_ld_i64(dest, cpu_env,
offsetof(CPULoongArchState, fpr[regno].vreg.D(index)));
}
static inline void set_vreg64(TCGv_i64 src, int regno, int index)
{
tcg_gen_st_i64(src, cpu_env,
offsetof(CPULoongArchState, fpr[regno].vreg.D(index)));
}
static inline int plus_1(DisasContext *ctx, int x)
{
return x + 1;
@ -71,6 +90,7 @@ static void loongarch_tr_init_disas_context(DisasContextBase *dcbase,
CPUState *cs)
{
int64_t bound;
CPULoongArchState *env = cs->env_ptr;
DisasContext *ctx = container_of(dcbase, DisasContext, base);
ctx->page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
@ -85,6 +105,10 @@ static void loongarch_tr_init_disas_context(DisasContextBase *dcbase,
bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4;
ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
if (FIELD_EX64(env->cpucfg[2], CPUCFG2, LSX)) {
ctx->vl = LSX_LEN;
}
ctx->zero = tcg_constant_tl(0);
}

1
target/loongarch/translate.h
View File

@ -31,6 +31,7 @@ typedef struct DisasContext {
uint32_t opcode;
uint16_t mem_idx;
uint16_t plv;
int vl; /* Vector length */
TCGv zero;
} DisasContext;