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target/arm: Implement SVE reverse within elements

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Backports commit dae8fb9019d2aa6ccb151a19871df40de6c98e29 from qemu
This commit is contained in:
Richard Henderson 2018-06-15 13:10:26 -04:00 committed by Lioncash
parent 53d151de58
commit 7d930e8515
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GPG key ID: 4E3C3CC1031BA9C7
7 changed files with 123 additions and 7 deletions
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10
qemu/aarch64.h
View file

@ -3444,11 +3444,21 @@
#define helper_sve_predtest helper_sve_predtest_aarch64
#define helper_sve_predtest1 helper_sve_predtest1_aarch64
#define helper_sve_punpk_p helper_sve_punpk_p_aarch64
#define helper_sve_rbit_b helper_sve_rbit_b_aarch64
#define helper_sve_rbit_d helper_sve_rbit_d_aarch64
#define helper_sve_rbit_h helper_sve_rbit_h_aarch64
#define helper_sve_rbit_s helper_sve_rbit_s_aarch64
#define helper_sve_rev_b helper_sve_rev_b_aarch64
#define helper_sve_rev_d helper_sve_rev_d_aarch64
#define helper_sve_rev_h helper_sve_rev_h_aarch64
#define helper_sve_rev_p helper_sve_rev_p_aarch64
#define helper_sve_rev_s helper_sve_rev_s_aarch64
#define helper_sve_revb_h helper_sve_revb_h_aarch64
#define helper_sve_revb_d helper_sve_revb_d_aarch64
#define helper_sve_revb_s helper_sve_revb_s_aarch64
#define helper_sve_revh_d helper_sve_revh_d_aarch64
#define helper_sve_revh_s helper_sve_revh_s_aarch64
#define helper_sve_revw_d helper_sve_revw_d_aarch64
#define helper_sve_sabd_zpzz_b helper_sve_sabd_zpzz_b_aarch64
#define helper_sve_sabd_zpzz_d helper_sve_sabd_zpzz_d_aarch64
#define helper_sve_sabd_zpzz_h helper_sve_sabd_zpzz_h_aarch64

10
qemu/aarch64eb.h
View file

@ -3444,11 +3444,21 @@
#define helper_sve_predtest helper_sve_predtest_aarch64eb
#define helper_sve_predtest1 helper_sve_predtest1_aarch64eb
#define helper_sve_punpk_p helper_sve_punpk_p_aarch64eb
#define helper_sve_rbit_b helper_sve_rbit_b_aarch64eb
#define helper_sve_rbit_d helper_sve_rbit_d_aarch64eb
#define helper_sve_rbit_h helper_sve_rbit_h_aarch64eb
#define helper_sve_rbit_s helper_sve_rbit_s_aarch64eb
#define helper_sve_rev_b helper_sve_rev_b_aarch64eb
#define helper_sve_rev_d helper_sve_rev_d_aarch64eb
#define helper_sve_rev_h helper_sve_rev_h_aarch64eb
#define helper_sve_rev_p helper_sve_rev_p_aarch64eb
#define helper_sve_rev_s helper_sve_rev_s_aarch64eb
#define helper_sve_revb_h helper_sve_revb_h_aarch64eb
#define helper_sve_revb_d helper_sve_revb_d_aarch64eb
#define helper_sve_revb_s helper_sve_revb_s_aarch64eb
#define helper_sve_revh_d helper_sve_revh_d_aarch64eb
#define helper_sve_revh_s helper_sve_revh_s_aarch64eb
#define helper_sve_revw_d helper_sve_revw_d_aarch64eb
#define helper_sve_sabd_zpzz_b helper_sve_sabd_zpzz_b_aarch64eb
#define helper_sve_sabd_zpzz_d helper_sve_sabd_zpzz_d_aarch64eb
#define helper_sve_sabd_zpzz_h helper_sve_sabd_zpzz_h_aarch64eb

10
qemu/header_gen.py
View file

@ -3465,11 +3465,21 @@ aarch64_symbols = (
'helper_sve_predtest',
'helper_sve_predtest1',
'helper_sve_punpk_p',
'helper_sve_rbit_b',
'helper_sve_rbit_d',
'helper_sve_rbit_h',
'helper_sve_rbit_s',
'helper_sve_rev_b',
'helper_sve_rev_d',
'helper_sve_rev_h',
'helper_sve_rev_p',
'helper_sve_rev_s',
'helper_sve_revb_h',
'helper_sve_revb_d',
'helper_sve_revb_s',
'helper_sve_revh_d',
'helper_sve_revh_s',
'helper_sve_revw_d',
'helper_sve_sabd_zpzz_b',
'helper_sve_sabd_zpzz_d',
'helper_sve_sabd_zpzz_h',

14
qemu/target/arm/helper-sve.h
View file

@ -465,6 +465,20 @@ DEF_HELPER_FLAGS_4(sve_compact_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_2(sve_last_active_element, TCG_CALL_NO_RWG, s32, ptr, i32)
DEF_HELPER_FLAGS_4(sve_revb_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_revb_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_revb_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_revh_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_revh_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_revw_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_rbit_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_rbit_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_rbit_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_4(sve_rbit_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve_and_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve_bic_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve_eor_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)

7
qemu/target/arm/sve.decode
View file

@ -456,6 +456,13 @@ CPY_m_v 00000101 .. 100000 100 ... ..... ..... @rd_pg_rn
# SVE copy element from general register to vector (predicated)
CPY_m_r 00000101 .. 101000 101 ... ..... ..... @rd_pg_rn
# SVE reverse within elements
# Note esz >= operation size
REVB 00000101 .. 1001 00 100 ... ..... ..... @rd_pg_rn
REVH 00000101 .. 1001 01 100 ... ..... ..... @rd_pg_rn
REVW 00000101 .. 1001 10 100 ... ..... ..... @rd_pg_rn
RBIT 00000101 .. 1001 11 100 ... ..... ..... @rd_pg_rn
### SVE Predicate Logical Operations Group
# SVE predicate logical operations

41
qemu/target/arm/sve_helper.c
View file

@ -237,6 +237,26 @@ static inline uint64_t expand_pred_s(uint8_t byte)
return word[byte & 0x11];
}
/* Swap 16-bit words within a 32-bit word. */
static inline uint32_t hswap32(uint32_t h)
{
return rol32(h, 16);
}
/* Swap 16-bit words within a 64-bit word. */
static inline uint64_t hswap64(uint64_t h)
{
uint64_t m = 0x0000ffff0000ffffull;
h = rol64(h, 32);
return ((h & m) << 16) | ((h >> 16) & m);
}
/* Swap 32-bit words within a 64-bit word. */
static inline uint64_t wswap64(uint64_t h)
{
return rol64(h, 32);
}
#define LOGICAL_PPPP(NAME, FUNC) \
void HELPER(NAME)(void *vd, void *vn, void *vm, void *vg, uint32_t desc) \
{ \
@ -615,6 +635,20 @@ DO_ZPZ(sve_neg_h, uint16_t, H1_2, DO_NEG)
DO_ZPZ(sve_neg_s, uint32_t, H1_4, DO_NEG)
DO_ZPZ_D(sve_neg_d, uint64_t, DO_NEG)
DO_ZPZ(sve_revb_h, uint16_t, H1_2, bswap16)
DO_ZPZ(sve_revb_s, uint32_t, H1_4, bswap32)
DO_ZPZ_D(sve_revb_d, uint64_t, bswap64)
DO_ZPZ(sve_revh_s, uint32_t, H1_4, hswap32)
DO_ZPZ_D(sve_revh_d, uint64_t, hswap64)
DO_ZPZ_D(sve_revw_d, uint64_t, wswap64)
DO_ZPZ(sve_rbit_b, uint8_t, H1, revbit8)
DO_ZPZ(sve_rbit_h, uint16_t, H1_2, revbit16)
DO_ZPZ(sve_rbit_s, uint32_t, H1_4, revbit32)
DO_ZPZ_D(sve_rbit_d, uint64_t, revbit64)
/* Three-operand expander, unpredicated, in which the third operand is "wide".
*/
#define DO_ZZW(NAME, TYPE, TYPEW, H, OP) \
@ -1586,13 +1620,6 @@ void HELPER(sve_rev_b)(void *vd, void *vn, uint32_t desc)
}
}
static inline uint64_t hswap64(uint64_t h)
{
uint64_t m = 0x0000ffff0000ffffull;
h = rol64(h, 32);
return ((h & m) << 16) | ((h >> 16) & m);
}
void HELPER(sve_rev_h)(void *vd, void *vn, uint32_t desc)
{
intptr_t i, j, opr_sz = simd_oprsz(desc);

38
qemu/target/arm/translate-sve.c
View file

@ -2744,6 +2744,44 @@ static bool trans_CPY_m_v(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
return true;
}
static bool trans_REVB(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
{
static gen_helper_gvec_3 * const fns[4] = {
NULL,
gen_helper_sve_revb_h,
gen_helper_sve_revb_s,
gen_helper_sve_revb_d,
};
return do_zpz_ool(s, a, fns[a->esz]);
}
static bool trans_REVH(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
{
static gen_helper_gvec_3 * const fns[4] = {
NULL,
NULL,
gen_helper_sve_revh_s,
gen_helper_sve_revh_d,
};
return do_zpz_ool(s, a, fns[a->esz]);
}
static bool trans_REVW(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
{
return do_zpz_ool(s, a, a->esz == 3 ? gen_helper_sve_revw_d : NULL);
}
static bool trans_RBIT(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
{
static gen_helper_gvec_3 * const fns[4] = {
gen_helper_sve_rbit_b,
gen_helper_sve_rbit_h,
gen_helper_sve_rbit_s,
gen_helper_sve_rbit_d,
};
return do_zpz_ool(s, a, fns[a->esz]);
}
/*
*** SVE Memory - 32-bit Gather and Unsized Contiguous Group
*/