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target/arm: Convert Neon VQABS, VQNEG to decodetree 

Convert the Neon VQABS and VQNEG insns to decodetree.
Since these are the only ones which need cpu_env passing to
the helper, we wrap the helper rather than creating a whole
new do_2misc_env() function.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200616170844.13318-15-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-06-16 18:08:37 +01:00
parent 84eae770af
commit 4936f38abe
3 changed files with 40 additions and 28 deletions
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3
target/arm/neon-dp.decode
View File

@ -465,6 +465,9 @@ Vimm_1r 1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm
VPADAL_S 1111 001 11 . 11 .. 00 .... 0 1100 . . 0 .... @2misc
VPADAL_U 1111 001 11 . 11 .. 00 .... 0 1101 . . 0 .... @2misc
VQABS 1111 001 11 . 11 .. 00 .... 0 1110 . . 0 .... @2misc
VQNEG 1111 001 11 . 11 .. 00 .... 0 1111 . . 0 .... @2misc
VCGT0 1111 001 11 . 11 .. 01 .... 0 0000 . . 0 .... @2misc
VCGE0 1111 001 11 . 11 .. 01 .... 0 0001 . . 0 .... @2misc
VCEQ0 1111 001 11 . 11 .. 01 .... 0 0010 . . 0 .... @2misc

35
target/arm/translate-neon.inc.c
View File

@ -3671,3 +3671,38 @@ static bool trans_VRSQRTE(DisasContext *s, arg_2misc *a)
}
return do_2misc(s, a, gen_helper_rsqrte_u32);
}
#define WRAP_1OP_ENV_FN(WRAPNAME, FUNC) \
static void WRAPNAME(TCGv_i32 d, TCGv_i32 m) \
{ \
FUNC(d, cpu_env, m); \
}
WRAP_1OP_ENV_FN(gen_VQABS_s8, gen_helper_neon_qabs_s8)
WRAP_1OP_ENV_FN(gen_VQABS_s16, gen_helper_neon_qabs_s16)
WRAP_1OP_ENV_FN(gen_VQABS_s32, gen_helper_neon_qabs_s32)
WRAP_1OP_ENV_FN(gen_VQNEG_s8, gen_helper_neon_qneg_s8)
WRAP_1OP_ENV_FN(gen_VQNEG_s16, gen_helper_neon_qneg_s16)
WRAP_1OP_ENV_FN(gen_VQNEG_s32, gen_helper_neon_qneg_s32)
static bool trans_VQABS(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
gen_VQABS_s8,
gen_VQABS_s16,
gen_VQABS_s32,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}
static bool trans_VQNEG(DisasContext *s, arg_2misc *a)
{
static NeonGenOneOpFn * const fn[] = {
gen_VQNEG_s8,
gen_VQNEG_s16,
gen_VQNEG_s32,
NULL,
};
return do_2misc(s, a, fn[a->size]);
}

30
target/arm/translate.c
View File

@ -4945,6 +4945,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
case NEON_2RM_VNEG_F:
case NEON_2RM_VRECPE:
case NEON_2RM_VRSQRTE:
case NEON_2RM_VQABS:
case NEON_2RM_VQNEG:
/* handled by decodetree */
return 1;
case NEON_2RM_VTRN:
@ -4966,34 +4968,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
for (pass = 0; pass < (q ? 4 : 2); pass++) {
tmp = neon_load_reg(rm, pass);
switch (op) {
case NEON_2RM_VQABS:
switch (size) {
case 0:
gen_helper_neon_qabs_s8(tmp, cpu_env, tmp);
break;
case 1:
gen_helper_neon_qabs_s16(tmp, cpu_env, tmp);
break;
case 2:
gen_helper_neon_qabs_s32(tmp, cpu_env, tmp);
break;
default: abort();
}
break;
case NEON_2RM_VQNEG:
switch (size) {
case 0:
gen_helper_neon_qneg_s8(tmp, cpu_env, tmp);
break;
case 1:
gen_helper_neon_qneg_s16(tmp, cpu_env, tmp);
break;
case 2:
gen_helper_neon_qneg_s32(tmp, cpu_env, tmp);
break;
default: abort();
}
break;
case NEON_2RM_VCGT0_F:
{
TCGv_ptr fpstatus = get_fpstatus_ptr(1);