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[97.126.117.207]) by smtp.gmail.com with ESMTPSA id o24sm104287919pfp.135.2019.07.26.10.51.02 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 26 Jul 2019 10:51:02 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Fri, 26 Jul 2019 10:49:50 -0700 Message-Id: <20190726175032.6769-26-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190726175032.6769-1-richard.henderson@linaro.org> References: <20190726175032.6769-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::543 Subject: [Qemu-devel] [PATCH 25/67] target/arm: Convert Parallel addition and subtraction X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Richard Henderson --- target/arm/translate.c | 229 ++++++++++++++++++++--------------------- target/arm/a32.decode | 44 ++++++++ target/arm/t32.decode | 44 ++++++++ 3 files changed, 200 insertions(+), 117 deletions(-) -- 2.17.1 diff --git a/target/arm/translate.c b/target/arm/translate.c index bcc890c458..8f2b5dcb02 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -696,99 +696,6 @@ static inline void gen_arm_shift_reg(TCGv_i32 var, int shiftop, tcg_temp_free_i32(shift); } -#define PAS_OP(pfx) \ - switch (op2) { \ - case 0: gen_pas_helper(glue(pfx,add16)); break; \ - case 1: gen_pas_helper(glue(pfx,addsubx)); break; \ - case 2: gen_pas_helper(glue(pfx,subaddx)); break; \ - case 3: gen_pas_helper(glue(pfx,sub16)); break; \ - case 4: gen_pas_helper(glue(pfx,add8)); break; \ - case 7: gen_pas_helper(glue(pfx,sub8)); break; \ - } -static void gen_arm_parallel_addsub(int op1, int op2, TCGv_i32 a, TCGv_i32 b) -{ - TCGv_ptr tmp; - - switch (op1) { -#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b, tmp) - case 1: - tmp = tcg_temp_new_ptr(); - tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUARMState, GE)); - PAS_OP(s) - tcg_temp_free_ptr(tmp); - break; - case 5: - tmp = tcg_temp_new_ptr(); - tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUARMState, GE)); - PAS_OP(u) - tcg_temp_free_ptr(tmp); - break; -#undef gen_pas_helper -#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b) - case 2: - PAS_OP(q); - break; - case 3: - PAS_OP(sh); - break; - case 6: - PAS_OP(uq); - break; - case 7: - PAS_OP(uh); - break; -#undef gen_pas_helper - } -} -#undef PAS_OP - -/* For unknown reasons Arm and Thumb-2 use arbitrarily different encodings. */ -#define PAS_OP(pfx) \ - switch (op1) { \ - case 0: gen_pas_helper(glue(pfx,add8)); break; \ - case 1: gen_pas_helper(glue(pfx,add16)); break; \ - case 2: gen_pas_helper(glue(pfx,addsubx)); break; \ - case 4: gen_pas_helper(glue(pfx,sub8)); break; \ - case 5: gen_pas_helper(glue(pfx,sub16)); break; \ - case 6: gen_pas_helper(glue(pfx,subaddx)); break; \ - } -static void gen_thumb2_parallel_addsub(int op1, int op2, TCGv_i32 a, TCGv_i32 b) -{ - TCGv_ptr tmp; - - switch (op2) { -#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b, tmp) - case 0: - tmp = tcg_temp_new_ptr(); - tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUARMState, GE)); - PAS_OP(s) - tcg_temp_free_ptr(tmp); - break; - case 4: - tmp = tcg_temp_new_ptr(); - tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUARMState, GE)); - PAS_OP(u) - tcg_temp_free_ptr(tmp); - break; -#undef gen_pas_helper -#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b) - case 1: - PAS_OP(q); - break; - case 2: - PAS_OP(sh); - break; - case 5: - PAS_OP(uq); - break; - case 6: - PAS_OP(uh); - break; -#undef gen_pas_helper - } -} -#undef PAS_OP - /* * Generate a conditional based on ARM condition code cc. * This is common between ARM and Aarch64 targets. @@ -9284,6 +9191,114 @@ static bool trans_UDF(DisasContext *s, arg_UDF *a) return true; } +/* + * Parallel addition and subtraction + */ + +static bool op_par_addsub(DisasContext *s, arg_rrr *a, + void (*gen)(TCGv_i32, TCGv_i32, TCGv_i32)) +{ + TCGv_i32 t0, t1; + + if (s->thumb + ? !arm_dc_feature(s, ARM_FEATURE_THUMB_DSP) + : !ENABLE_ARCH_6) { + return false; + } + + t0 = load_reg(s, a->rn); + t1 = load_reg(s, a->rm); + + gen(t0, t0, t1); + + tcg_temp_free_i32(t1); + store_reg(s, a->rd, t0); + return true; +} + +static bool op_par_addsub_ge(DisasContext *s, arg_rrr *a, + void (*gen)(TCGv_i32, TCGv_i32, + TCGv_i32, TCGv_ptr)) +{ + TCGv_i32 t0, t1; + TCGv_ptr ge; + + if (s->thumb + ? !arm_dc_feature(s, ARM_FEATURE_THUMB_DSP) + : !ENABLE_ARCH_6) { + return false; + } + + t0 = load_reg(s, a->rn); + t1 = load_reg(s, a->rm); + + ge = tcg_temp_new_ptr(); + tcg_gen_addi_ptr(ge, cpu_env, offsetof(CPUARMState, GE)); + gen(t0, t0, t1, ge); + + tcg_temp_free_ptr(ge); + tcg_temp_free_i32(t1); + store_reg(s, a->rd, t0); + return true; +} + +#define DO_PAR_ADDSUB(NAME, helper) \ +static bool trans_##NAME(DisasContext *s, arg_rrr *a) \ +{ \ + return op_par_addsub(s, a, helper); \ +} + +#define DO_PAR_ADDSUB_GE(NAME, helper) \ +static bool trans_##NAME(DisasContext *s, arg_rrr *a) \ +{ \ + return op_par_addsub_ge(s, a, helper); \ +} + +DO_PAR_ADDSUB_GE(SADD16, gen_helper_sadd16) +DO_PAR_ADDSUB_GE(SASX, gen_helper_saddsubx) +DO_PAR_ADDSUB_GE(SSAX, gen_helper_ssubaddx) +DO_PAR_ADDSUB_GE(SSUB16, gen_helper_ssub16) +DO_PAR_ADDSUB_GE(SADD8, gen_helper_sadd8) +DO_PAR_ADDSUB_GE(SSUB8, gen_helper_ssub8) + +DO_PAR_ADDSUB_GE(UADD16, gen_helper_uadd16) +DO_PAR_ADDSUB_GE(UASX, gen_helper_uaddsubx) +DO_PAR_ADDSUB_GE(USAX, gen_helper_usubaddx) +DO_PAR_ADDSUB_GE(USUB16, gen_helper_usub16) +DO_PAR_ADDSUB_GE(UADD8, gen_helper_uadd8) +DO_PAR_ADDSUB_GE(USUB8, gen_helper_usub8) + +DO_PAR_ADDSUB(QADD16, gen_helper_qadd16) +DO_PAR_ADDSUB(QASX, gen_helper_qaddsubx) +DO_PAR_ADDSUB(QSAX, gen_helper_qsubaddx) +DO_PAR_ADDSUB(QSUB16, gen_helper_qsub16) +DO_PAR_ADDSUB(QADD8, gen_helper_qadd8) +DO_PAR_ADDSUB(QSUB8, gen_helper_qsub8) + +DO_PAR_ADDSUB(UQADD16, gen_helper_uqadd16) +DO_PAR_ADDSUB(UQASX, gen_helper_uqaddsubx) +DO_PAR_ADDSUB(UQSAX, gen_helper_uqsubaddx) +DO_PAR_ADDSUB(UQSUB16, gen_helper_uqsub16) +DO_PAR_ADDSUB(UQADD8, gen_helper_uqadd8) +DO_PAR_ADDSUB(UQSUB8, gen_helper_uqsub8) + +DO_PAR_ADDSUB(SHADD16, gen_helper_shadd16) +DO_PAR_ADDSUB(SHASX, gen_helper_shaddsubx) +DO_PAR_ADDSUB(SHSAX, gen_helper_shsubaddx) +DO_PAR_ADDSUB(SHSUB16, gen_helper_shsub16) +DO_PAR_ADDSUB(SHADD8, gen_helper_shadd8) +DO_PAR_ADDSUB(SHSUB8, gen_helper_shsub8) + +DO_PAR_ADDSUB(UHADD16, gen_helper_uhadd16) +DO_PAR_ADDSUB(UHASX, gen_helper_uhaddsubx) +DO_PAR_ADDSUB(UHSAX, gen_helper_uhsubaddx) +DO_PAR_ADDSUB(UHSUB16, gen_helper_uhsub16) +DO_PAR_ADDSUB(UHADD8, gen_helper_uhadd8) +DO_PAR_ADDSUB(UHSUB8, gen_helper_uhsub8) + +#undef DO_PAR_ADDSUB +#undef DO_PAR_ADDSUB_GE + /* * Legacy decoder. */ @@ -9593,16 +9608,8 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn) rs = (insn >> 8) & 0xf; switch ((insn >> 23) & 3) { case 0: /* Parallel add/subtract. */ - op1 = (insn >> 20) & 7; - tmp = load_reg(s, rn); - tmp2 = load_reg(s, rm); - sh = (insn >> 5) & 7; - if ((op1 & 3) == 0 || sh == 5 || sh == 6) - goto illegal_op; - gen_arm_parallel_addsub(op1, sh, tmp, tmp2); - tcg_temp_free_i32(tmp2); - store_reg(s, rd, tmp); - break; + /* Done by decodetree */ + goto illegal_op; case 1: if ((insn & 0x00700020) == 0) { /* Halfword pack. */ @@ -10396,20 +10403,8 @@ static void disas_thumb2_insn(DisasContext *s, uint32_t insn) } store_reg(s, rd, tmp); break; - case 2: /* SIMD add/subtract. */ - if (!arm_dc_feature(s, ARM_FEATURE_THUMB_DSP)) { - goto illegal_op; - } - op = (insn >> 20) & 7; - shift = (insn >> 4) & 7; - if ((op & 3) == 3 || (shift & 3) == 3) - goto illegal_op; - tmp = load_reg(s, rn); - tmp2 = load_reg(s, rm); - gen_thumb2_parallel_addsub(op, shift, tmp, tmp2); - tcg_temp_free_i32(tmp2); - store_reg(s, rd, tmp); - break; + case 2: /* SIMD add/subtract, in decodetree */ + goto illegal_op; case 3: /* Other data processing. */ op = ((insn >> 17) & 0x38) | ((insn >> 4) & 7); if (op < 4) { diff --git a/target/arm/a32.decode b/target/arm/a32.decode index 7f51d04a91..2e0f74044f 100644 --- a/target/arm/a32.decode +++ b/target/arm/a32.decode @@ -410,3 +410,47 @@ BFCI ---- 0111 110 msb:5 rd:4 lsb:5 001 rn:4 &bfi # While we could get UDEF by not including this, add the pattern for # documentation and to conflict with any other typos in this file. UDF 1110 0111 1111 ---- ---- ---- 1111 ---- + +# Parallel addition and subtraction + +SADD16 .... 0110 0001 .... .... 1111 0001 .... @rndm +SASX .... 0110 0001 .... .... 1111 0011 .... @rndm +SSAX .... 0110 0001 .... .... 1111 0101 .... @rndm +SSUB16 .... 0110 0001 .... .... 1111 0111 .... @rndm +SADD8 .... 0110 0001 .... .... 1111 1001 .... @rndm +SSUB8 .... 0110 0001 .... .... 1111 1111 .... @rndm + +QADD16 .... 0110 0010 .... .... 1111 0001 .... @rndm +QASX .... 0110 0010 .... .... 1111 0011 .... @rndm +QSAX .... 0110 0010 .... .... 1111 0101 .... @rndm +QSUB16 .... 0110 0010 .... .... 1111 0111 .... @rndm +QADD8 .... 0110 0010 .... .... 1111 1001 .... @rndm +QSUB8 .... 0110 0010 .... .... 1111 1111 .... @rndm + +SHADD16 .... 0110 0011 .... .... 1111 0001 .... @rndm +SHASX .... 0110 0011 .... .... 1111 0011 .... @rndm +SHSAX .... 0110 0011 .... .... 1111 0101 .... @rndm +SHSUB16 .... 0110 0011 .... .... 1111 0111 .... @rndm +SHADD8 .... 0110 0011 .... .... 1111 1001 .... @rndm +SHSUB8 .... 0110 0011 .... .... 1111 1111 .... @rndm + +UADD16 .... 0110 0101 .... .... 1111 0001 .... @rndm +UASX .... 0110 0101 .... .... 1111 0011 .... @rndm +USAX .... 0110 0101 .... .... 1111 0101 .... @rndm +USUB16 .... 0110 0101 .... .... 1111 0111 .... @rndm +UADD8 .... 0110 0101 .... .... 1111 1001 .... @rndm +USUB8 .... 0110 0101 .... .... 1111 1111 .... @rndm + +UQADD16 .... 0110 0110 .... .... 1111 0001 .... @rndm +UQASX .... 0110 0110 .... .... 1111 0011 .... @rndm +UQSAX .... 0110 0110 .... .... 1111 0101 .... @rndm +UQSUB16 .... 0110 0110 .... .... 1111 0111 .... @rndm +UQADD8 .... 0110 0110 .... .... 1111 1001 .... @rndm +UQSUB8 .... 0110 0110 .... .... 1111 1111 .... @rndm + +UHADD16 .... 0110 0111 .... .... 1111 0001 .... @rndm +UHASX .... 0110 0111 .... .... 1111 0011 .... @rndm +UHSAX .... 0110 0111 .... .... 1111 0101 .... @rndm +UHSUB16 .... 0110 0111 .... .... 1111 0111 .... @rndm +UHADD8 .... 0110 0111 .... .... 1111 1001 .... @rndm +UHSUB8 .... 0110 0111 .... .... 1111 1111 .... @rndm diff --git a/target/arm/t32.decode b/target/arm/t32.decode index a4a69ad38f..99673929c0 100644 --- a/target/arm/t32.decode +++ b/target/arm/t32.decode @@ -457,3 +457,47 @@ LDAEXD_t32 1110 1000 1101 .... .... .... 1111 1111 @ldrex_d LDA 1110 1000 1101 .... .... 1111 1010 1111 @ldrex_0 LDAB 1110 1000 1101 .... .... 1111 1000 1111 @ldrex_0 LDAH 1110 1000 1101 .... .... 1111 1001 1111 @ldrex_0 + +# Parallel addition and subtraction + +SADD8 1111 1010 1000 .... 1111 .... 0000 .... @rndm +QADD8 1111 1010 1000 .... 1111 .... 0001 .... @rndm +SHADD8 1111 1010 1000 .... 1111 .... 0010 .... @rndm +UADD8 1111 1010 1000 .... 1111 .... 0100 .... @rndm +UQADD8 1111 1010 1000 .... 1111 .... 0101 .... @rndm +UHADD8 1111 1010 1000 .... 1111 .... 0110 .... @rndm + +SADD16 1111 1010 1001 .... 1111 .... 0000 .... @rndm +QADD16 1111 1010 1001 .... 1111 .... 0001 .... @rndm +SHADD16 1111 1010 1001 .... 1111 .... 0010 .... @rndm +UADD16 1111 1010 1001 .... 1111 .... 0100 .... @rndm +UQADD16 1111 1010 1001 .... 1111 .... 0101 .... @rndm +UHADD16 1111 1010 1001 .... 1111 .... 0110 .... @rndm + +SASX 1111 1010 1010 .... 1111 .... 0000 .... @rndm +QASX 1111 1010 1010 .... 1111 .... 0001 .... @rndm +SHASX 1111 1010 1010 .... 1111 .... 0010 .... @rndm +UASX 1111 1010 1010 .... 1111 .... 0100 .... @rndm +UQASX 1111 1010 1010 .... 1111 .... 0101 .... @rndm +UHASX 1111 1010 1010 .... 1111 .... 0110 .... @rndm + +SSUB8 1111 1010 1100 .... 1111 .... 0000 .... @rndm +QSUB8 1111 1010 1100 .... 1111 .... 0001 .... @rndm +SHSUB8 1111 1010 1100 .... 1111 .... 0010 .... @rndm +USUB8 1111 1010 1100 .... 1111 .... 0100 .... @rndm +UQSUB8 1111 1010 1100 .... 1111 .... 0101 .... @rndm +UHSUB8 1111 1010 1100 .... 1111 .... 0110 .... @rndm + +SSUB16 1111 1010 1101 .... 1111 .... 0000 .... @rndm +QSUB16 1111 1010 1101 .... 1111 .... 0001 .... @rndm +SHSUB16 1111 1010 1101 .... 1111 .... 0010 .... @rndm +USUB16 1111 1010 1101 .... 1111 .... 0100 .... @rndm +UQSUB16 1111 1010 1101 .... 1111 .... 0101 .... @rndm +UHSUB16 1111 1010 1101 .... 1111 .... 0110 .... @rndm + +SSAX 1111 1010 1110 .... 1111 .... 0000 .... @rndm +QSAX 1111 1010 1110 .... 1111 .... 0001 .... @rndm +SHSAX 1111 1010 1110 .... 1111 .... 0010 .... @rndm +USAX 1111 1010 1110 .... 1111 .... 0100 .... @rndm +UQSAX 1111 1010 1110 .... 1111 .... 0101 .... @rndm +UHSAX 1111 1010 1110 .... 1111 .... 0110 .... @rndm