diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 278d7873c2..74ba1fa07c 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -34,6 +34,7 @@ &rrx_e rd rn rm idx esz &rrrr_e rd rn rm ra esz &qrr_e q rd rn esz +&qrri_e q rd rn imm esz &qrrr_e q rd rn rm esz &qrrx_e q rd rn rm idx esz &qrrrr_e q rd rn rm ra esz @@ -1185,11 +1186,71 @@ FMINV_s 0110 1110 10 11000 01111 10 ..... ..... @rr_q1e2 FMOVI_s 0001 1110 .. 1 imm:8 100 00000 rd:5 esz=%esz_hsd -# Advanced SIMD Modified Immediate +# Advanced SIMD Modified Immediate / Shift by Immediate %abcdefgh 16:3 5:5 +# Right shifts are encoded as N - shift, where N is the element size in bits. +%neon_rshift_i6 16:6 !function=rsub_64 +%neon_rshift_i5 16:5 !function=rsub_32 +%neon_rshift_i4 16:4 !function=rsub_16 +%neon_rshift_i3 16:3 !function=rsub_8 + +@q_shri_b . q:1 .. ..... 0001 ... ..... . rn:5 rd:5 \ + &qrri_e esz=0 imm=%neon_rshift_i3 +@q_shri_h . q:1 .. ..... 001 .... ..... . rn:5 rd:5 \ + &qrri_e esz=1 imm=%neon_rshift_i4 +@q_shri_s . q:1 .. ..... 01 ..... ..... . rn:5 rd:5 \ + &qrri_e esz=2 imm=%neon_rshift_i5 +@q_shri_d . 1 .. ..... 1 ...... ..... . rn:5 rd:5 \ + &qrri_e esz=3 imm=%neon_rshift_i6 q=1 + FMOVI_v_h 0 q:1 00 1111 00000 ... 1111 11 ..... rd:5 %abcdefgh # MOVI, MVNI, ORR, BIC, FMOV are all intermixed via cmode. Vimm 0 q:1 op:1 0 1111 00000 ... cmode:4 01 ..... rd:5 %abcdefgh + +SSHR_v 0.00 11110 .... ... 00000 1 ..... ..... @q_shri_b +SSHR_v 0.00 11110 .... ... 00000 1 ..... ..... @q_shri_h +SSHR_v 0.00 11110 .... ... 00000 1 ..... ..... @q_shri_s +SSHR_v 0.00 11110 .... ... 00000 1 ..... ..... @q_shri_d + +USHR_v 0.10 11110 .... ... 00000 1 ..... ..... @q_shri_b +USHR_v 0.10 11110 .... ... 00000 1 ..... ..... @q_shri_h +USHR_v 0.10 11110 .... ... 00000 1 ..... ..... @q_shri_s +USHR_v 0.10 11110 .... ... 00000 1 ..... ..... @q_shri_d + +SSRA_v 0.00 11110 .... ... 00010 1 ..... ..... @q_shri_b +SSRA_v 0.00 11110 .... ... 00010 1 ..... ..... @q_shri_h +SSRA_v 0.00 11110 .... ... 00010 1 ..... ..... @q_shri_s +SSRA_v 0.00 11110 .... ... 00010 1 ..... ..... @q_shri_d + +USRA_v 0.10 11110 .... ... 00010 1 ..... ..... @q_shri_b +USRA_v 0.10 11110 .... ... 00010 1 ..... ..... @q_shri_h +USRA_v 0.10 11110 .... ... 00010 1 ..... ..... @q_shri_s +USRA_v 0.10 11110 .... ... 00010 1 ..... ..... @q_shri_d + +SRSHR_v 0.00 11110 .... ... 00100 1 ..... ..... @q_shri_b +SRSHR_v 0.00 11110 .... ... 00100 1 ..... ..... @q_shri_h +SRSHR_v 0.00 11110 .... ... 00100 1 ..... ..... @q_shri_s +SRSHR_v 0.00 11110 .... ... 00100 1 ..... ..... @q_shri_d + +URSHR_v 0.10 11110 .... ... 00100 1 ..... ..... @q_shri_b +URSHR_v 0.10 11110 .... ... 00100 1 ..... ..... @q_shri_h +URSHR_v 0.10 11110 .... ... 00100 1 ..... ..... @q_shri_s +URSHR_v 0.10 11110 .... ... 00100 1 ..... ..... @q_shri_d + +SRSRA_v 0.00 11110 .... ... 00110 1 ..... ..... @q_shri_b +SRSRA_v 0.00 11110 .... ... 00110 1 ..... ..... @q_shri_h +SRSRA_v 0.00 11110 .... ... 00110 1 ..... ..... @q_shri_s +SRSRA_v 0.00 11110 .... ... 00110 1 ..... ..... @q_shri_d + +URSRA_v 0.10 11110 .... ... 00110 1 ..... ..... @q_shri_b +URSRA_v 0.10 11110 .... ... 00110 1 ..... ..... @q_shri_h +URSRA_v 0.10 11110 .... ... 00110 1 ..... ..... @q_shri_s +URSRA_v 0.10 11110 .... ... 00110 1 ..... ..... @q_shri_d + +SRI_v 0.10 11110 .... ... 01000 1 ..... ..... @q_shri_b +SRI_v 0.10 11110 .... ... 01000 1 ..... ..... @q_shri_h +SRI_v 0.10 11110 .... ... 01000 1 ..... ..... @q_shri_s +SRI_v 0.10 11110 .... ... 01000 1 ..... ..... @q_shri_d diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 032bd33650..5c76cdf101 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -6959,6 +6959,28 @@ static bool trans_Vimm(DisasContext *s, arg_Vimm *a) return true; } +/* + * Advanced SIMD Shift by Immediate + */ + +static bool do_vec_shift_imm(DisasContext *s, arg_qrri_e *a, GVecGen2iFn *fn) +{ + if (fp_access_check(s)) { + gen_gvec_fn2i(s, a->q, a->rd, a->rn, a->imm, fn, a->esz); + } + return true; +} + +TRANS(SSHR_v, do_vec_shift_imm, a, gen_gvec_sshr) +TRANS(USHR_v, do_vec_shift_imm, a, gen_gvec_ushr) +TRANS(SSRA_v, do_vec_shift_imm, a, gen_gvec_ssra) +TRANS(USRA_v, do_vec_shift_imm, a, gen_gvec_usra) +TRANS(SRSHR_v, do_vec_shift_imm, a, gen_gvec_srshr) +TRANS(URSHR_v, do_vec_shift_imm, a, gen_gvec_urshr) +TRANS(SRSRA_v, do_vec_shift_imm, a, gen_gvec_srsra) +TRANS(URSRA_v, do_vec_shift_imm, a, gen_gvec_ursra) +TRANS(SRI_v, do_vec_shift_imm, a, gen_gvec_sri) + /* Shift a TCGv src by TCGv shift_amount, put result in dst. * Note that it is the caller's responsibility to ensure that the * shift amount is in range (ie 0..31 or 0..63) and provide the ARM @@ -10423,53 +10445,6 @@ static void disas_simd_scalar_two_reg_misc(DisasContext *s, uint32_t insn) } } -/* SSHR[RA]/USHR[RA] - Vector shift right (optional rounding/accumulate) */ -static void handle_vec_simd_shri(DisasContext *s, bool is_q, bool is_u, - int immh, int immb, int opcode, int rn, int rd) -{ - int size = 32 - clz32(immh) - 1; - int immhb = immh << 3 | immb; - int shift = 2 * (8 << size) - immhb; - GVecGen2iFn *gvec_fn; - - if (extract32(immh, 3, 1) && !is_q) { - unallocated_encoding(s); - return; - } - tcg_debug_assert(size <= 3); - - if (!fp_access_check(s)) { - return; - } - - switch (opcode) { - case 0x02: /* SSRA / USRA (accumulate) */ - gvec_fn = is_u ? gen_gvec_usra : gen_gvec_ssra; - break; - - case 0x08: /* SRI */ - gvec_fn = gen_gvec_sri; - break; - - case 0x00: /* SSHR / USHR */ - gvec_fn = is_u ? gen_gvec_ushr : gen_gvec_sshr; - break; - - case 0x04: /* SRSHR / URSHR (rounding) */ - gvec_fn = is_u ? gen_gvec_urshr : gen_gvec_srshr; - break; - - case 0x06: /* SRSRA / URSRA (accum + rounding) */ - gvec_fn = is_u ? gen_gvec_ursra : gen_gvec_srsra; - break; - - default: - g_assert_not_reached(); - } - - gen_gvec_fn2i(s, is_q, rd, rn, shift, gvec_fn, size); -} - /* SHL/SLI - Vector shift left */ static void handle_vec_simd_shli(DisasContext *s, bool is_q, bool insert, int immh, int immb, int opcode, int rn, int rd) @@ -10610,18 +10585,6 @@ static void disas_simd_shift_imm(DisasContext *s, uint32_t insn) } switch (opcode) { - case 0x08: /* SRI */ - if (!is_u) { - unallocated_encoding(s); - return; - } - /* fall through */ - case 0x00: /* SSHR / USHR */ - case 0x02: /* SSRA / USRA (accumulate) */ - case 0x04: /* SRSHR / URSHR (rounding) */ - case 0x06: /* SRSRA / URSRA (accum + rounding) */ - handle_vec_simd_shri(s, is_q, is_u, immh, immb, opcode, rn, rd); - break; case 0x0a: /* SHL / SLI */ handle_vec_simd_shli(s, is_q, is_u, immh, immb, opcode, rn, rd); break; @@ -10660,6 +10623,11 @@ static void disas_simd_shift_imm(DisasContext *s, uint32_t insn) handle_simd_shift_fpint_conv(s, false, is_q, is_u, immh, immb, rn, rd); return; default: + case 0x00: /* SSHR / USHR */ + case 0x02: /* SSRA / USRA (accumulate) */ + case 0x04: /* SRSHR / URSHR (rounding) */ + case 0x06: /* SRSRA / URSRA (accum + rounding) */ + case 0x08: /* SRI */ unallocated_encoding(s); return; }