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target/riscv: add support for zmmul extension v0.1 

Add support for the zmmul extension v0.1. This extension includes all
multiplication operations from the M extension but not the divide ops.

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220531030732.3850-1-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Weiwei Li 2022-05-31 11:07:32 +08:00 committed by Alistair Francis
parent efe1592c43
commit de799beba7
3 changed files with 20 additions and 6 deletions
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7
target/riscv/cpu.c
View File

@ -600,6 +600,11 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
cpu->cfg.ext_ifencei = true;
}
if (cpu->cfg.ext_m && cpu->cfg.ext_zmmul) {
warn_report("Zmmul will override M");
cpu->cfg.ext_m = false;
}
if (cpu->cfg.ext_i && cpu->cfg.ext_e) {
error_setg(errp,
"I and E extensions are incompatible");
@ -905,6 +910,7 @@ static Property riscv_cpu_properties[] = {
/* These are experimental so mark with 'x-' */
DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false),
DEFINE_PROP_BOOL("x-zmmul", RISCVCPU, cfg.ext_zmmul, false),
/* ePMP 0.9.3 */
DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
DEFINE_PROP_BOOL("x-aia", RISCVCPU, cfg.aia, false),
@ -1031,6 +1037,7 @@ static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str, int max_str_len)
struct isa_ext_data isa_edata_arr[] = {
ISA_EDATA_ENTRY(zicsr, ext_icsr),
ISA_EDATA_ENTRY(zifencei, ext_ifencei),
ISA_EDATA_ENTRY(zmmul, ext_zmmul),
ISA_EDATA_ENTRY(zfh, ext_zfh),
ISA_EDATA_ENTRY(zfhmin, ext_zfhmin),
ISA_EDATA_ENTRY(zfinx, ext_zfinx),

1
target/riscv/cpu.h
View File

@ -411,6 +411,7 @@ struct RISCVCPUConfig {
bool ext_zhinxmin;
bool ext_zve32f;
bool ext_zve64f;
bool ext_zmmul;
uint32_t mvendorid;
uint64_t marchid;

18
target/riscv/insn_trans/trans_rvm.c.inc
View File

@ -18,6 +18,12 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define REQUIRE_M_OR_ZMMUL(ctx) do { \
if (!ctx->cfg_ptr->ext_zmmul && !has_ext(ctx, RVM)) { \
return false; \
} \
} while (0)
static void gen_mulhu_i128(TCGv r2, TCGv r3, TCGv al, TCGv ah, TCGv bl, TCGv bh)
{
TCGv tmpl = tcg_temp_new();
@ -65,7 +71,7 @@ static void gen_mul_i128(TCGv rl, TCGv rh,
static bool trans_mul(DisasContext *ctx, arg_mul *a)
{
REQUIRE_EXT(ctx, RVM);
REQUIRE_M_OR_ZMMUL(ctx);
return gen_arith(ctx, a, EXT_NONE, tcg_gen_mul_tl, gen_mul_i128);
}
@ -109,7 +115,7 @@ static void gen_mulh_w(TCGv ret, TCGv s1, TCGv s2)
static bool trans_mulh(DisasContext *ctx, arg_mulh *a)
{
REQUIRE_EXT(ctx, RVM);
REQUIRE_M_OR_ZMMUL(ctx);
return gen_arith_per_ol(ctx, a, EXT_SIGN, gen_mulh, gen_mulh_w,
gen_mulh_i128);
}
@ -161,7 +167,7 @@ static void gen_mulhsu_w(TCGv ret, TCGv arg1, TCGv arg2)
static bool trans_mulhsu(DisasContext *ctx, arg_mulhsu *a)
{
REQUIRE_EXT(ctx, RVM);
REQUIRE_M_OR_ZMMUL(ctx);
return gen_arith_per_ol(ctx, a, EXT_NONE, gen_mulhsu, gen_mulhsu_w,
gen_mulhsu_i128);
}
@ -176,7 +182,7 @@ static void gen_mulhu(TCGv ret, TCGv s1, TCGv s2)
static bool trans_mulhu(DisasContext *ctx, arg_mulhu *a)
{
REQUIRE_EXT(ctx, RVM);
REQUIRE_M_OR_ZMMUL(ctx);
/* gen_mulh_w works for either sign as input. */
return gen_arith_per_ol(ctx, a, EXT_ZERO, gen_mulhu, gen_mulh_w,
gen_mulhu_i128);
@ -349,7 +355,7 @@ static bool trans_remu(DisasContext *ctx, arg_remu *a)
static bool trans_mulw(DisasContext *ctx, arg_mulw *a)
{
REQUIRE_64_OR_128BIT(ctx);
REQUIRE_EXT(ctx, RVM);
REQUIRE_M_OR_ZMMUL(ctx);
ctx->ol = MXL_RV32;
return gen_arith(ctx, a, EXT_NONE, tcg_gen_mul_tl, NULL);
}
@ -389,7 +395,7 @@ static bool trans_remuw(DisasContext *ctx, arg_remuw *a)
static bool trans_muld(DisasContext *ctx, arg_muld *a)
{
REQUIRE_128BIT(ctx);
REQUIRE_EXT(ctx, RVM);
REQUIRE_M_OR_ZMMUL(ctx);
ctx->ol = MXL_RV64;
return gen_arith(ctx, a, EXT_SIGN, tcg_gen_mul_tl, NULL);
}