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RISC-V: Adding XTheadFmv ISA extension

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This patch adds support for the XTheadFmv ISA extension.
The patch uses the T-Head specific decoder and translation.

Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230131202013.2541053-14-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Christoph Müllner 2023-01-31 21:20:12 +01:00 committed by Alistair Francis
parent 95bd8daaaf
commit 578086ba2f
5 changed files with 55 additions and 3 deletions
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2
target/riscv/cpu.c
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@ -116,6 +116,7 @@ static const struct isa_ext_data isa_edata_arr[] = {
ISA_EXT_DATA_ENTRY(xtheadcmo, true, PRIV_VERSION_1_11_0, ext_xtheadcmo),
ISA_EXT_DATA_ENTRY(xtheadcondmov, true, PRIV_VERSION_1_11_0, ext_xtheadcondmov),
ISA_EXT_DATA_ENTRY(xtheadfmemidx, true, PRIV_VERSION_1_11_0, ext_xtheadfmemidx),
ISA_EXT_DATA_ENTRY(xtheadfmv, true, PRIV_VERSION_1_11_0, ext_xtheadfmv),
ISA_EXT_DATA_ENTRY(xtheadmac, true, PRIV_VERSION_1_11_0, ext_xtheadmac),
ISA_EXT_DATA_ENTRY(xtheadmemidx, true, PRIV_VERSION_1_11_0, ext_xtheadmemidx),
ISA_EXT_DATA_ENTRY(xtheadmempair, true, PRIV_VERSION_1_11_0, ext_xtheadmempair),
@ -1134,6 +1135,7 @@ static Property riscv_cpu_extensions[] = {
DEFINE_PROP_BOOL("xtheadcmo", RISCVCPU, cfg.ext_xtheadcmo, false),
DEFINE_PROP_BOOL("xtheadcondmov", RISCVCPU, cfg.ext_xtheadcondmov, false),
DEFINE_PROP_BOOL("xtheadfmemidx", RISCVCPU, cfg.ext_xtheadfmemidx, false),
DEFINE_PROP_BOOL("xtheadfmv", RISCVCPU, cfg.ext_xtheadfmv, false),
DEFINE_PROP_BOOL("xtheadmac", RISCVCPU, cfg.ext_xtheadmac, false),
DEFINE_PROP_BOOL("xtheadmemidx", RISCVCPU, cfg.ext_xtheadmemidx, false),
DEFINE_PROP_BOOL("xtheadmempair", RISCVCPU, cfg.ext_xtheadmempair, false),

1
target/riscv/cpu.h
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@ -480,6 +480,7 @@ struct RISCVCPUConfig {
bool ext_xtheadcmo;
bool ext_xtheadcondmov;
bool ext_xtheadfmemidx;
bool ext_xtheadfmv;
bool ext_xtheadmac;
bool ext_xtheadmemidx;
bool ext_xtheadmempair;

45
target/riscv/insn_trans/trans_xthead.c.inc
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@ -52,6 +52,12 @@
} \
} while (0)
#define REQUIRE_XTHEADFMV(ctx) do { \
if (!ctx->cfg_ptr->ext_xtheadfmv) { \
return false; \
} \
} while (0)
#define REQUIRE_XTHEADMAC(ctx) do { \
if (!ctx->cfg_ptr->ext_xtheadmac) { \
return false; \
@ -449,6 +455,45 @@ static bool trans_th_fsurw(DisasContext *ctx, arg_th_memidx *a)
return gen_fstore_idx(ctx, a, MO_TEUL, true);
}
/* XTheadFmv */
static bool trans_th_fmv_hw_x(DisasContext *ctx, arg_th_fmv_hw_x *a)
{
REQUIRE_XTHEADFMV(ctx);
REQUIRE_32BIT(ctx);
REQUIRE_FPU;
REQUIRE_EXT(ctx, RVD);
TCGv src1 = get_gpr(ctx, a->rs1, EXT_ZERO);
TCGv_i64 t1 = tcg_temp_new_i64();
tcg_gen_extu_tl_i64(t1, src1);
tcg_gen_deposit_i64(cpu_fpr[a->rd], cpu_fpr[a->rd], t1, 32, 32);
tcg_temp_free_i64(t1);
mark_fs_dirty(ctx);
return true;
}
static bool trans_th_fmv_x_hw(DisasContext *ctx, arg_th_fmv_x_hw *a)
{
REQUIRE_XTHEADFMV(ctx);
REQUIRE_32BIT(ctx);
REQUIRE_FPU;
REQUIRE_EXT(ctx, RVD);
TCGv dst;
TCGv_i64 t1;
dst = dest_gpr(ctx, a->rd);
t1 = tcg_temp_new_i64();
tcg_gen_extract_i64(t1, cpu_fpr[a->rs1], 32, 32);
tcg_gen_trunc_i64_tl(dst, t1);
gen_set_gpr(ctx, a->rd, dst);
tcg_temp_free_i64(t1);
mark_fs_dirty(ctx);
return true;
}
/* XTheadMac */
static bool gen_th_mac(DisasContext *ctx, arg_r *a,

6
target/riscv/translate.c
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@ -135,9 +135,9 @@ static bool has_xthead_p(DisasContext *ctx __attribute__((__unused__)))
return ctx->cfg_ptr->ext_xtheadba || ctx->cfg_ptr->ext_xtheadbb ||
ctx->cfg_ptr->ext_xtheadbs || ctx->cfg_ptr->ext_xtheadcmo ||
ctx->cfg_ptr->ext_xtheadcondmov ||
ctx->cfg_ptr->ext_xtheadfmemidx || ctx->cfg_ptr->ext_xtheadmac ||
ctx->cfg_ptr->ext_xtheadmemidx || ctx->cfg_ptr->ext_xtheadmempair ||
ctx->cfg_ptr->ext_xtheadsync;
ctx->cfg_ptr->ext_xtheadfmemidx || ctx->cfg_ptr->ext_xtheadfmv ||
ctx->cfg_ptr->ext_xtheadmac || ctx->cfg_ptr->ext_xtheadmemidx ||
ctx->cfg_ptr->ext_xtheadmempair || ctx->cfg_ptr->ext_xtheadsync;
}
#define MATERIALISE_EXT_PREDICATE(ext) \

4
target/riscv/xthead.decode
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@ -110,6 +110,10 @@ th_fsrw 01000 .. ..... ..... 111 ..... 0001011 @th_memidx
th_fsurd 01110 .. ..... ..... 111 ..... 0001011 @th_memidx
th_fsurw 01010 .. ..... ..... 111 ..... 0001011 @th_memidx
# XTheadFmv
th_fmv_hw_x 1010000 00000 ..... 001 ..... 0001011 @r2
th_fmv_x_hw 1100000 00000 ..... 001 ..... 0001011 @r2
# XTheadMac
th_mula 00100 00 ..... ..... 001 ..... 0001011 @r
th_mulah 00101 00 ..... ..... 001 ..... 0001011 @r