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target/riscv: Move gen_* helpers for RVM

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Move these helpers near their use by the trans_*
functions within insn_trans/trans_rvm.c.inc.

Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-10-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Richard Henderson 2021-08-23 12:55:14 -07:00 committed by Alistair Francis
parent 8a1b4917c5
commit b66a0585f0
2 changed files with 127 additions and 127 deletions
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127
target/riscv/insn_trans/trans_rvm.c.inc
View File

@ -39,6 +39,21 @@ static bool trans_mulh(DisasContext *ctx, arg_mulh *a)
return gen_arith(ctx, a, EXT_NONE, gen_mulh);
}
static void gen_mulhsu(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv rl = tcg_temp_new();
TCGv rh = tcg_temp_new();
tcg_gen_mulu2_tl(rl, rh, arg1, arg2);
/* fix up for one negative */
tcg_gen_sari_tl(rl, arg1, TARGET_LONG_BITS - 1);
tcg_gen_and_tl(rl, rl, arg2);
tcg_gen_sub_tl(ret, rh, rl);
tcg_temp_free(rl);
tcg_temp_free(rh);
}
static bool trans_mulhsu(DisasContext *ctx, arg_mulhsu *a)
{
REQUIRE_EXT(ctx, RVM);
@ -59,24 +74,136 @@ static bool trans_mulhu(DisasContext *ctx, arg_mulhu *a)
return gen_arith(ctx, a, EXT_NONE, gen_mulhu);
}
static void gen_div(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp1, temp2, zero, one, mone, min;
temp1 = tcg_temp_new();
temp2 = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
mone = tcg_constant_tl(-1);
min = tcg_constant_tl(1ull << (TARGET_LONG_BITS - 1));
/*
* If overflow, set temp2 to 1, else source2.
* This produces the required result of min.
*/
tcg_gen_setcond_tl(TCG_COND_EQ, temp1, source1, min);
tcg_gen_setcond_tl(TCG_COND_EQ, temp2, source2, mone);
tcg_gen_and_tl(temp1, temp1, temp2);
tcg_gen_movcond_tl(TCG_COND_NE, temp2, temp1, zero, one, source2);
/*
* If div by zero, set temp1 to -1 and temp2 to 1 to
* produce the required result of -1.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp1, source2, zero, mone, source1);
tcg_gen_movcond_tl(TCG_COND_EQ, temp2, source2, zero, one, temp2);
tcg_gen_div_tl(ret, temp1, temp2);
tcg_temp_free(temp1);
tcg_temp_free(temp2);
}
static bool trans_div(DisasContext *ctx, arg_div *a)
{
REQUIRE_EXT(ctx, RVM);
return gen_arith(ctx, a, EXT_SIGN, gen_div);
}
static void gen_divu(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp1, temp2, zero, one, max;
temp1 = tcg_temp_new();
temp2 = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
max = tcg_constant_tl(~0);
/*
* If div by zero, set temp1 to max and temp2 to 1 to
* produce the required result of max.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp1, source2, zero, max, source1);
tcg_gen_movcond_tl(TCG_COND_EQ, temp2, source2, zero, one, source2);
tcg_gen_divu_tl(ret, temp1, temp2);
tcg_temp_free(temp1);
tcg_temp_free(temp2);
}
static bool trans_divu(DisasContext *ctx, arg_divu *a)
{
REQUIRE_EXT(ctx, RVM);
return gen_arith(ctx, a, EXT_ZERO, gen_divu);
}
static void gen_rem(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp1, temp2, zero, one, mone, min;
temp1 = tcg_temp_new();
temp2 = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
mone = tcg_constant_tl(-1);
min = tcg_constant_tl(1ull << (TARGET_LONG_BITS - 1));
/*
* If overflow, set temp1 to 0, else source1.
* This avoids a possible host trap, and produces the required result of 0.
*/
tcg_gen_setcond_tl(TCG_COND_EQ, temp1, source1, min);
tcg_gen_setcond_tl(TCG_COND_EQ, temp2, source2, mone);
tcg_gen_and_tl(temp1, temp1, temp2);
tcg_gen_movcond_tl(TCG_COND_NE, temp1, temp1, zero, zero, source1);
/*
* If div by zero, set temp2 to 1, else source2.
* This avoids a possible host trap, but produces an incorrect result.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp2, source2, zero, one, source2);
tcg_gen_rem_tl(temp1, temp1, temp2);
/* If div by zero, the required result is the original dividend. */
tcg_gen_movcond_tl(TCG_COND_EQ, ret, source2, zero, source1, temp1);
tcg_temp_free(temp1);
tcg_temp_free(temp2);
}
static bool trans_rem(DisasContext *ctx, arg_rem *a)
{
REQUIRE_EXT(ctx, RVM);
return gen_arith(ctx, a, EXT_SIGN, gen_rem);
}
static void gen_remu(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp, zero, one;
temp = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
/*
* If div by zero, set temp to 1, else source2.
* This avoids a possible host trap, but produces an incorrect result.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp, source2, zero, one, source2);
tcg_gen_remu_tl(temp, source1, temp);
/* If div by zero, the required result is the original dividend. */
tcg_gen_movcond_tl(TCG_COND_EQ, ret, source2, zero, source1, temp);
tcg_temp_free(temp);
}
static bool trans_remu(DisasContext *ctx, arg_remu *a)
{
REQUIRE_EXT(ctx, RVM);

127
target/riscv/translate.c
View File

@ -249,133 +249,6 @@ static void gen_set_gpr(DisasContext *ctx, int reg_num, TCGv t)
}
}
static void gen_mulhsu(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv rl = tcg_temp_new();
TCGv rh = tcg_temp_new();
tcg_gen_mulu2_tl(rl, rh, arg1, arg2);
/* fix up for one negative */
tcg_gen_sari_tl(rl, arg1, TARGET_LONG_BITS - 1);
tcg_gen_and_tl(rl, rl, arg2);
tcg_gen_sub_tl(ret, rh, rl);
tcg_temp_free(rl);
tcg_temp_free(rh);
}
static void gen_div(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp1, temp2, zero, one, mone, min;
temp1 = tcg_temp_new();
temp2 = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
mone = tcg_constant_tl(-1);
min = tcg_constant_tl(1ull << (TARGET_LONG_BITS - 1));
/*
* If overflow, set temp2 to 1, else source2.
* This produces the required result of min.
*/
tcg_gen_setcond_tl(TCG_COND_EQ, temp1, source1, min);
tcg_gen_setcond_tl(TCG_COND_EQ, temp2, source2, mone);
tcg_gen_and_tl(temp1, temp1, temp2);
tcg_gen_movcond_tl(TCG_COND_NE, temp2, temp1, zero, one, source2);
/*
* If div by zero, set temp1 to -1 and temp2 to 1 to
* produce the required result of -1.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp1, source2, zero, mone, source1);
tcg_gen_movcond_tl(TCG_COND_EQ, temp2, source2, zero, one, temp2);
tcg_gen_div_tl(ret, temp1, temp2);
tcg_temp_free(temp1);
tcg_temp_free(temp2);
}
static void gen_divu(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp1, temp2, zero, one, max;
temp1 = tcg_temp_new();
temp2 = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
max = tcg_constant_tl(~0);
/*
* If div by zero, set temp1 to max and temp2 to 1 to
* produce the required result of max.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp1, source2, zero, max, source1);
tcg_gen_movcond_tl(TCG_COND_EQ, temp2, source2, zero, one, source2);
tcg_gen_divu_tl(ret, temp1, temp2);
tcg_temp_free(temp1);
tcg_temp_free(temp2);
}
static void gen_rem(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp1, temp2, zero, one, mone, min;
temp1 = tcg_temp_new();
temp2 = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
mone = tcg_constant_tl(-1);
min = tcg_constant_tl(1ull << (TARGET_LONG_BITS - 1));
/*
* If overflow, set temp1 to 0, else source1.
* This avoids a possible host trap, and produces the required result of 0.
*/
tcg_gen_setcond_tl(TCG_COND_EQ, temp1, source1, min);
tcg_gen_setcond_tl(TCG_COND_EQ, temp2, source2, mone);
tcg_gen_and_tl(temp1, temp1, temp2);
tcg_gen_movcond_tl(TCG_COND_NE, temp1, temp1, zero, zero, source1);
/*
* If div by zero, set temp2 to 1, else source2.
* This avoids a possible host trap, but produces an incorrect result.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp2, source2, zero, one, source2);
tcg_gen_rem_tl(temp1, temp1, temp2);
/* If div by zero, the required result is the original dividend. */
tcg_gen_movcond_tl(TCG_COND_EQ, ret, source2, zero, source1, temp1);
tcg_temp_free(temp1);
tcg_temp_free(temp2);
}
static void gen_remu(TCGv ret, TCGv source1, TCGv source2)
{
TCGv temp, zero, one;
temp = tcg_temp_new();
zero = tcg_constant_tl(0);
one = tcg_constant_tl(1);
/*
* If div by zero, set temp to 1, else source2.
* This avoids a possible host trap, but produces an incorrect result.
*/
tcg_gen_movcond_tl(TCG_COND_EQ, temp, source2, zero, one, source2);
tcg_gen_remu_tl(temp, source1, temp);
/* If div by zero, the required result is the original dividend. */
tcg_gen_movcond_tl(TCG_COND_EQ, ret, source2, zero, source1, temp);
tcg_temp_free(temp);
}
static void gen_jal(DisasContext *ctx, int rd, target_ulong imm)
{
target_ulong next_pc;