[v12,24/61] target/riscv: vector single-width saturating add and subtract

Message ID	20200701152549.1218-25-zhiwei_liu@c-sky.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=3OzA=AM=nongnu.org=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1F88207BB From: LIU Zhiwei <zhiwei_liu@c-sky.com> To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v12 24/61] target/riscv: vector single-width saturating add and subtract Date: Wed, 1 Jul 2020 23:25:12 +0800 Message-Id: <20200701152549.1218-25-zhiwei_liu@c-sky.com> In-Reply-To: <20200701152549.1218-1-zhiwei_liu@c-sky.com> References: <20200701152549.1218-1-zhiwei_liu@c-sky.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: none client-ip=121.197.200.217; envelope-from=zhiwei_liu@c-sky.com; helo=smtp2200-217.mail.aliyun.com Precedence: list Cc: richard.henderson@linaro.org, wxy194768@alibaba-inc.com, wenmeng_zhang@c-sky.com, Alistair Francis <alistair.francis@wdc.com>, palmer@dabbelt.com, LIU Zhiwei <zhiwei_liu@c-sky.com> Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org>
Series	target/riscv: support vector extension v0.7.1 \| expand [v12,00/61] target/riscv: support vector extension v0.7.1 [v12,01/61] target/riscv: add vector extension field in CPURISCVState [v12,02/61] target/riscv: implementation-defined constant parameters [v12,03/61] target/riscv: support vector extension csr [v12,04/61] target/riscv: add vector configure instruction [v12,05/61] target/riscv: add an internals.h header [v12,06/61] target/riscv: add vector stride load and store instructions [v12,07/61] target/riscv: add vector index load and store instructions [v12,08/61] target/riscv: add fault-only-first unit stride load [v12,09/61] target/riscv: add vector amo operations [v12,10/61] target/riscv: vector single-width integer add and subtract [v12,11/61] target/riscv: vector widening integer add and subtract [v12,12/61] target/riscv: vector integer add-with-carry / subtract-with-borrow instructions [v12,13/61] target/riscv: vector bitwise logical instructions [v12,14/61] target/riscv: vector single-width bit shift instructions [v12,15/61] target/riscv: vector narrowing integer right shift instructions [v12,16/61] target/riscv: vector integer comparison instructions [v12,17/61] target/riscv: vector integer min/max instructions [v12,18/61] target/riscv: vector single-width integer multiply instructions [v12,19/61] target/riscv: vector integer divide instructions [v12,20/61] target/riscv: vector widening integer multiply instructions [v12,21/61] target/riscv: vector single-width integer multiply-add instructions [v12,22/61] target/riscv: vector widening integer multiply-add instructions [v12,23/61] target/riscv: vector integer merge and move instructions [v12,24/61] target/riscv: vector single-width saturating add and subtract [v12,25/61] target/riscv: vector single-width averaging add and subtract [v12,26/61] target/riscv: vector single-width fractional multiply with rounding and saturation [v12,27/61] target/riscv: vector widening saturating scaled multiply-add [v12,28/61] target/riscv: vector single-width scaling shift instructions [v12,29/61] target/riscv: vector narrowing fixed-point clip instructions [v12,30/61] target/riscv: vector single-width floating-point add/subtract instructions [v12,31/61] target/riscv: vector widening floating-point add/subtract instructions [v12,32/61] target/riscv: vector single-width floating-point multiply/divide instructions [v12,33/61] target/riscv: vector widening floating-point multiply [v12,34/61] target/riscv: vector single-width floating-point fused multiply-add instructions [v12,35/61] target/riscv: vector widening floating-point fused multiply-add instructions [v12,36/61] target/riscv: vector floating-point square-root instruction [v12,37/61] target/riscv: vector floating-point min/max instructions [v12,38/61] target/riscv: vector floating-point sign-injection instructions [v12,39/61] target/riscv: vector floating-point compare instructions [v12,40/61] target/riscv: vector floating-point classify instructions [v12,41/61] target/riscv: vector floating-point merge instructions [v12,42/61] target/riscv: vector floating-point/integer type-convert instructions [v12,43/61] target/riscv: widening floating-point/integer type-convert instructions [v12,44/61] target/riscv: narrowing floating-point/integer type-convert instructions [v12,45/61] target/riscv: vector single-width integer reduction instructions [v12,46/61] target/riscv: vector wideing integer reduction instructions [v12,47/61] target/riscv: vector single-width floating-point reduction instructions [v12,48/61] target/riscv: vector widening floating-point reduction instructions [v12,49/61] target/riscv: vector mask-register logical instructions [v12,50/61] target/riscv: vector mask population count vmpopc [v12,51/61] target/riscv: vmfirst find-first-set mask bit [v12,52/61] target/riscv: set-X-first mask bit [v12,53/61] target/riscv: vector iota instruction [v12,54/61] target/riscv: vector element index instruction [v12,55/61] target/riscv: integer extract instruction [v12,56/61] target/riscv: integer scalar move instruction [v12,57/61] target/riscv: floating-point scalar move instructions [v12,58/61] target/riscv: vector slide instructions [v12,59/61] target/riscv: vector register gather instruction [v12,60/61] target/riscv: vector compress instruction [v12,61/61] target/riscv: configure and turn on vector extension from command line

diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 9851086730..85bd4b91bc 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -692,3 +692,36 @@ DEF_HELPER_4(vmv_v_x_b, void, ptr, i64, env, i32) DEF_HELPER_4(vmv_v_x_h, void, ptr, i64, env, i32) DEF_HELPER_4(vmv_v_x_w, void, ptr, i64, env, i32) DEF_HELPER_4(vmv_v_x_d, void, ptr, i64, env, i32) + +DEF_HELPER_6(vsaddu_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsaddu_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsaddu_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsaddu_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsadd_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsadd_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsadd_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsadd_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssubu_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssubu_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssubu_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssubu_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssub_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssub_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssub_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vssub_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsaddu_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsaddu_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsaddu_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsaddu_vx_d, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsadd_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsadd_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsadd_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsadd_vx_d, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssubu_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssubu_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssubu_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssubu_vx_d, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssub_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssub_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssub_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vssub_vx_d, void, ptr, ptr, tl, ptr, env, i32) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 238aa014d1..70df42de9a 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -409,6 +409,16 @@ vmv_v_i 010111 1 00000 ..... 011 ..... 1010111 @r2 vmerge_vvm 010111 0 ..... ..... 000 ..... 1010111 @r_vm_0 vmerge_vxm 010111 0 ..... ..... 100 ..... 1010111 @r_vm_0 vmerge_vim 010111 0 ..... ..... 011 ..... 1010111 @r_vm_0 +vsaddu_vv 100000 . ..... ..... 000 ..... 1010111 @r_vm +vsaddu_vx 100000 . ..... ..... 100 ..... 1010111 @r_vm +vsaddu_vi 100000 . ..... ..... 011 ..... 1010111 @r_vm +vsadd_vv 100001 . ..... ..... 000 ..... 1010111 @r_vm +vsadd_vx 100001 . ..... ..... 100 ..... 1010111 @r_vm +vsadd_vi 100001 . ..... ..... 011 ..... 1010111 @r_vm +vssubu_vv 100010 . ..... ..... 000 ..... 1010111 @r_vm +vssubu_vx 100010 . ..... ..... 100 ..... 1010111 @r_vm +vssub_vv 100011 . ..... ..... 000 ..... 1010111 @r_vm +vssub_vx 100011 . ..... ..... 100 ..... 1010111 @r_vm vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm vsetvl 1000000 ..... ..... 111 ..... 1010111 @r diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c index f9532ebc71..a2ab14ade0 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -1731,3 +1731,19 @@ static bool trans_vmv_v_i(DisasContext *s, arg_vmv_v_i *a) GEN_OPIVV_TRANS(vmerge_vvm, opivv_vadc_check) GEN_OPIVX_TRANS(vmerge_vxm, opivx_vadc_check) GEN_OPIVI_TRANS(vmerge_vim, 0, vmerge_vxm, opivx_vadc_check) + +/* + *** Vector Fixed-Point Arithmetic Instructions + */ + +/* Vector Single-Width Saturating Add and Subtract */ +GEN_OPIVV_TRANS(vsaddu_vv, opivv_check) +GEN_OPIVV_TRANS(vsadd_vv, opivv_check) +GEN_OPIVV_TRANS(vssubu_vv, opivv_check) +GEN_OPIVV_TRANS(vssub_vv, opivv_check) +GEN_OPIVX_TRANS(vsaddu_vx, opivx_check) +GEN_OPIVX_TRANS(vsadd_vx, opivx_check) +GEN_OPIVX_TRANS(vssubu_vx, opivx_check) +GEN_OPIVX_TRANS(vssub_vx, opivx_check) +GEN_OPIVI_TRANS(vsaddu_vi, 1, vsaddu_vx, opivx_check) +GEN_OPIVI_TRANS(vsadd_vi, 0, vsadd_vx, opivx_check) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 92d90d07d6..1277aa1c10 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -2112,3 +2112,388 @@ GEN_VEXT_VMERGE_VX(vmerge_vxm_b, int8_t, H1, clearb) GEN_VEXT_VMERGE_VX(vmerge_vxm_h, int16_t, H2, clearh) GEN_VEXT_VMERGE_VX(vmerge_vxm_w, int32_t, H4, clearl) GEN_VEXT_VMERGE_VX(vmerge_vxm_d, int64_t, H8, clearq) + +/* + *** Vector Fixed-Point Arithmetic Instructions + */ + +/* Vector Single-Width Saturating Add and Subtract */ + +/* + * As fixed point instructions probably have round mode and saturation, + * define common macros for fixed point here. + */ +typedef void opivv2_rm_fn(void *vd, void *vs1, void *vs2, int i, + CPURISCVState *env, int vxrm); + +#define OPIVV2_RM(NAME, TD, T1, T2, TX1, TX2, HD, HS1, HS2, OP) \ +static inline void \ +do_##NAME(void *vd, void *vs1, void *vs2, int i, \ + CPURISCVState *env, int vxrm) \ +{ \ + TX1 s1 = *((T1 *)vs1 + HS1(i)); \ + TX2 s2 = *((T2 *)vs2 + HS2(i)); \ + *((TD *)vd + HD(i)) = OP(env, vxrm, s2, s1); \ +} + +static inline void +vext_vv_rm_1(void *vd, void *v0, void *vs1, void *vs2, + CPURISCVState *env, + uint32_t vl, uint32_t vm, uint32_t mlen, int vxrm, + opivv2_rm_fn *fn) +{ + for (uint32_t i = 0; i < vl; i++) { + if (!vm && !vext_elem_mask(v0, mlen, i)) { + continue; + } + fn(vd, vs1, vs2, i, env, vxrm); + } +} + +static inline void +vext_vv_rm_2(void *vd, void *v0, void *vs1, void *vs2, + CPURISCVState *env, + uint32_t desc, uint32_t esz, uint32_t dsz, + opivv2_rm_fn *fn, clear_fn *clearfn) +{ + uint32_t vlmax = vext_maxsz(desc) / esz; + uint32_t mlen = vext_mlen(desc); + uint32_t vm = vext_vm(desc); + uint32_t vl = env->vl; + + switch (env->vxrm) { + case 0: /* rnu */ + vext_vv_rm_1(vd, v0, vs1, vs2, + env, vl, vm, mlen, 0, fn); + break; + case 1: /* rne */ + vext_vv_rm_1(vd, v0, vs1, vs2, + env, vl, vm, mlen, 1, fn); + break; + case 2: /* rdn */ + vext_vv_rm_1(vd, v0, vs1, vs2, + env, vl, vm, mlen, 2, fn); + break; + default: /* rod */ + vext_vv_rm_1(vd, v0, vs1, vs2, + env, vl, vm, mlen, 3, fn); + break; + } + + clearfn(vd, vl, vl * dsz, vlmax * dsz); +} + +/* generate helpers for fixed point instructions with OPIVV format */ +#define GEN_VEXT_VV_RM(NAME, ESZ, DSZ, CLEAR_FN) \ +void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \ + CPURISCVState *env, uint32_t desc) \ +{ \ + vext_vv_rm_2(vd, v0, vs1, vs2, env, desc, ESZ, DSZ, \ + do_##NAME, CLEAR_FN); \ +} + +static inline uint8_t saddu8(CPURISCVState *env, int vxrm, uint8_t a, uint8_t b) +{ + uint8_t res = a + b; + if (res < a) { + res = UINT8_MAX; + env->vxsat = 0x1; + } + return res; +} + +static inline uint16_t saddu16(CPURISCVState *env, int vxrm, uint16_t a, + uint16_t b) +{ + uint16_t res = a + b; + if (res < a) { + res = UINT16_MAX; + env->vxsat = 0x1; + } + return res; +} + +static inline uint32_t saddu32(CPURISCVState *env, int vxrm, uint32_t a, + uint32_t b) +{ + uint32_t res = a + b; + if (res < a) { + res = UINT32_MAX; + env->vxsat = 0x1; + } + return res; +} + +static inline uint64_t saddu64(CPURISCVState *env, int vxrm, uint64_t a, + uint64_t b) +{ + uint64_t res = a + b; + if (res < a) { + res = UINT64_MAX; + env->vxsat = 0x1; + } + return res; +} + +RVVCALL(OPIVV2_RM, vsaddu_vv_b, OP_UUU_B, H1, H1, H1, saddu8) +RVVCALL(OPIVV2_RM, vsaddu_vv_h, OP_UUU_H, H2, H2, H2, saddu16) +RVVCALL(OPIVV2_RM, vsaddu_vv_w, OP_UUU_W, H4, H4, H4, saddu32) +RVVCALL(OPIVV2_RM, vsaddu_vv_d, OP_UUU_D, H8, H8, H8, saddu64) +GEN_VEXT_VV_RM(vsaddu_vv_b, 1, 1, clearb) +GEN_VEXT_VV_RM(vsaddu_vv_h, 2, 2, clearh) +GEN_VEXT_VV_RM(vsaddu_vv_w, 4, 4, clearl) +GEN_VEXT_VV_RM(vsaddu_vv_d, 8, 8, clearq) + +typedef void opivx2_rm_fn(void *vd, target_long s1, void *vs2, int i, + CPURISCVState *env, int vxrm); + +#define OPIVX2_RM(NAME, TD, T1, T2, TX1, TX2, HD, HS2, OP) \ +static inline void \ +do_##NAME(void *vd, target_long s1, void *vs2, int i, \ + CPURISCVState *env, int vxrm) \ +{ \ + TX2 s2 = *((T2 *)vs2 + HS2(i)); \ + *((TD *)vd + HD(i)) = OP(env, vxrm, s2, (TX1)(T1)s1); \ +} + +static inline void +vext_vx_rm_1(void *vd, void *v0, target_long s1, void *vs2, + CPURISCVState *env, + uint32_t vl, uint32_t vm, uint32_t mlen, int vxrm, + opivx2_rm_fn *fn) +{ + for (uint32_t i = 0; i < vl; i++) { + if (!vm && !vext_elem_mask(v0, mlen, i)) { + continue; + } + fn(vd, s1, vs2, i, env, vxrm); + } +} + +static inline void +vext_vx_rm_2(void *vd, void *v0, target_long s1, void *vs2, + CPURISCVState *env, + uint32_t desc, uint32_t esz, uint32_t dsz, + opivx2_rm_fn *fn, clear_fn *clearfn) +{ + uint32_t vlmax = vext_maxsz(desc) / esz; + uint32_t mlen = vext_mlen(desc); + uint32_t vm = vext_vm(desc); + uint32_t vl = env->vl; + + switch (env->vxrm) { + case 0: /* rnu */ + vext_vx_rm_1(vd, v0, s1, vs2, + env, vl, vm, mlen, 0, fn); + break; + case 1: /* rne */ + vext_vx_rm_1(vd, v0, s1, vs2, + env, vl, vm, mlen, 1, fn); + break; + case 2: /* rdn */ + vext_vx_rm_1(vd, v0, s1, vs2, + env, vl, vm, mlen, 2, fn); + break; + default: /* rod */ + vext_vx_rm_1(vd, v0, s1, vs2, + env, vl, vm, mlen, 3, fn); + break; + } + + clearfn(vd, vl, vl * dsz, vlmax * dsz); +} + +/* generate helpers for fixed point instructions with OPIVX format */ +#define GEN_VEXT_VX_RM(NAME, ESZ, DSZ, CLEAR_FN) \ +void HELPER(NAME)(void *vd, void *v0, target_ulong s1, \ + void *vs2, CPURISCVState *env, uint32_t desc) \ +{ \ + vext_vx_rm_2(vd, v0, s1, vs2, env, desc, ESZ, DSZ, \ + do_##NAME, CLEAR_FN); \ +} + +RVVCALL(OPIVX2_RM, vsaddu_vx_b, OP_UUU_B, H1, H1, saddu8) +RVVCALL(OPIVX2_RM, vsaddu_vx_h, OP_UUU_H, H2, H2, saddu16) +RVVCALL(OPIVX2_RM, vsaddu_vx_w, OP_UUU_W, H4, H4, saddu32) +RVVCALL(OPIVX2_RM, vsaddu_vx_d, OP_UUU_D, H8, H8, saddu64) +GEN_VEXT_VX_RM(vsaddu_vx_b, 1, 1, clearb) +GEN_VEXT_VX_RM(vsaddu_vx_h, 2, 2, clearh) +GEN_VEXT_VX_RM(vsaddu_vx_w, 4, 4, clearl) +GEN_VEXT_VX_RM(vsaddu_vx_d, 8, 8, clearq) + +static inline int8_t sadd8(CPURISCVState *env, int vxrm, int8_t a, int8_t b) +{ + int8_t res = a + b; + if ((res ^ a) & (res ^ b) & INT8_MIN) { + res = a > 0 ? INT8_MAX : INT8_MIN; + env->vxsat = 0x1; + } + return res; +} + +static inline int16_t sadd16(CPURISCVState *env, int vxrm, int16_t a, int16_t b) +{ + int16_t res = a + b; + if ((res ^ a) & (res ^ b) & INT16_MIN) { + res = a > 0 ? INT16_MAX : INT16_MIN; + env->vxsat = 0x1; + } + return res; +} + +static inline int32_t sadd32(CPURISCVState *env, int vxrm, int32_t a, int32_t b) +{ + int32_t res = a + b; + if ((res ^ a) & (res ^ b) & INT32_MIN) { + res = a > 0 ? INT32_MAX : INT32_MIN; + env->vxsat = 0x1; + } + return res; +} + +static inline int64_t sadd64(CPURISCVState *env, int vxrm, int64_t a, int64_t b) +{ + int64_t res = a + b; + if ((res ^ a) & (res ^ b) & INT64_MIN) { + res = a > 0 ? INT64_MAX : INT64_MIN; + env->vxsat = 0x1; + } + return res; +} + +RVVCALL(OPIVV2_RM, vsadd_vv_b, OP_SSS_B, H1, H1, H1, sadd8) +RVVCALL(OPIVV2_RM, vsadd_vv_h, OP_SSS_H, H2, H2, H2, sadd16) +RVVCALL(OPIVV2_RM, vsadd_vv_w, OP_SSS_W, H4, H4, H4, sadd32) +RVVCALL(OPIVV2_RM, vsadd_vv_d, OP_SSS_D, H8, H8, H8, sadd64) +GEN_VEXT_VV_RM(vsadd_vv_b, 1, 1, clearb) +GEN_VEXT_VV_RM(vsadd_vv_h, 2, 2, clearh) +GEN_VEXT_VV_RM(vsadd_vv_w, 4, 4, clearl) +GEN_VEXT_VV_RM(vsadd_vv_d, 8, 8, clearq) + +RVVCALL(OPIVX2_RM, vsadd_vx_b, OP_SSS_B, H1, H1, sadd8) +RVVCALL(OPIVX2_RM, vsadd_vx_h, OP_SSS_H, H2, H2, sadd16) +RVVCALL(OPIVX2_RM, vsadd_vx_w, OP_SSS_W, H4, H4, sadd32) +RVVCALL(OPIVX2_RM, vsadd_vx_d, OP_SSS_D, H8, H8, sadd64) +GEN_VEXT_VX_RM(vsadd_vx_b, 1, 1, clearb) +GEN_VEXT_VX_RM(vsadd_vx_h, 2, 2, clearh) +GEN_VEXT_VX_RM(vsadd_vx_w, 4, 4, clearl) +GEN_VEXT_VX_RM(vsadd_vx_d, 8, 8, clearq) + +static inline uint8_t ssubu8(CPURISCVState *env, int vxrm, uint8_t a, uint8_t b) +{ + uint8_t res = a - b; + if (res > a) { + res = 0; + env->vxsat = 0x1; + } + return res; +} + +static inline uint16_t ssubu16(CPURISCVState *env, int vxrm, uint16_t a, + uint16_t b) +{ + uint16_t res = a - b; + if (res > a) { + res = 0; + env->vxsat = 0x1; + } + return res; +} + +static inline uint32_t ssubu32(CPURISCVState *env, int vxrm, uint32_t a, + uint32_t b) +{ + uint32_t res = a - b; + if (res > a) { + res = 0; + env->vxsat = 0x1; + } + return res; +} + +static inline uint64_t ssubu64(CPURISCVState *env, int vxrm, uint64_t a, + uint64_t b) +{ + uint64_t res = a - b; + if (res > a) { + res = 0; + env->vxsat = 0x1; + } + return res; +} + +RVVCALL(OPIVV2_RM, vssubu_vv_b, OP_UUU_B, H1, H1, H1, ssubu8) +RVVCALL(OPIVV2_RM, vssubu_vv_h, OP_UUU_H, H2, H2, H2, ssubu16) +RVVCALL(OPIVV2_RM, vssubu_vv_w, OP_UUU_W, H4, H4, H4, ssubu32) +RVVCALL(OPIVV2_RM, vssubu_vv_d, OP_UUU_D, H8, H8, H8, ssubu64) +GEN_VEXT_VV_RM(vssubu_vv_b, 1, 1, clearb) +GEN_VEXT_VV_RM(vssubu_vv_h, 2, 2, clearh) +GEN_VEXT_VV_RM(vssubu_vv_w, 4, 4, clearl) +GEN_VEXT_VV_RM(vssubu_vv_d, 8, 8, clearq) + +RVVCALL(OPIVX2_RM, vssubu_vx_b, OP_UUU_B, H1, H1, ssubu8) +RVVCALL(OPIVX2_RM, vssubu_vx_h, OP_UUU_H, H2, H2, ssubu16) +RVVCALL(OPIVX2_RM, vssubu_vx_w, OP_UUU_W, H4, H4, ssubu32) +RVVCALL(OPIVX2_RM, vssubu_vx_d, OP_UUU_D, H8, H8, ssubu64) +GEN_VEXT_VX_RM(vssubu_vx_b, 1, 1, clearb) +GEN_VEXT_VX_RM(vssubu_vx_h, 2, 2, clearh) +GEN_VEXT_VX_RM(vssubu_vx_w, 4, 4, clearl) +GEN_VEXT_VX_RM(vssubu_vx_d, 8, 8, clearq) + +static inline int8_t ssub8(CPURISCVState *env, int vxrm, int8_t a, int8_t b) +{ + int8_t res = a - b; + if ((res ^ a) & (a ^ b) & INT8_MIN) { + res = a > 0 ? INT8_MAX : INT8_MIN; + env->vxsat = 0x1; + } + return res; +} + +static inline int16_t ssub16(CPURISCVState *env, int vxrm, int16_t a, int16_t b) +{ + int16_t res = a - b; + if ((res ^ a) & (a ^ b) & INT16_MIN) { + res = a > 0 ? INT16_MAX : INT16_MIN; + env->vxsat = 0x1; + } + return res; +} + +static inline int32_t ssub32(CPURISCVState *env, int vxrm, int32_t a, int32_t b) +{ + int32_t res = a - b; + if ((res ^ a) & (a ^ b) & INT32_MIN) { + res = a > 0 ? INT32_MAX : INT32_MIN; + env->vxsat = 0x1; + } + return res; +} + +static inline int64_t ssub64(CPURISCVState *env, int vxrm, int64_t a, int64_t b) +{ + int64_t res = a - b; + if ((res ^ a) & (a ^ b) & INT64_MIN) { + res = a > 0 ? INT64_MAX : INT64_MIN; + env->vxsat = 0x1; + } + return res; +} + +RVVCALL(OPIVV2_RM, vssub_vv_b, OP_SSS_B, H1, H1, H1, ssub8) +RVVCALL(OPIVV2_RM, vssub_vv_h, OP_SSS_H, H2, H2, H2, ssub16) +RVVCALL(OPIVV2_RM, vssub_vv_w, OP_SSS_W, H4, H4, H4, ssub32) +RVVCALL(OPIVV2_RM, vssub_vv_d, OP_SSS_D, H8, H8, H8, ssub64) +GEN_VEXT_VV_RM(vssub_vv_b, 1, 1, clearb) +GEN_VEXT_VV_RM(vssub_vv_h, 2, 2, clearh) +GEN_VEXT_VV_RM(vssub_vv_w, 4, 4, clearl) +GEN_VEXT_VV_RM(vssub_vv_d, 8, 8, clearq) + +RVVCALL(OPIVX2_RM, vssub_vx_b, OP_SSS_B, H1, H1, ssub8) +RVVCALL(OPIVX2_RM, vssub_vx_h, OP_SSS_H, H2, H2, ssub16) +RVVCALL(OPIVX2_RM, vssub_vx_w, OP_SSS_W, H4, H4, ssub32) +RVVCALL(OPIVX2_RM, vssub_vx_d, OP_SSS_D, H8, H8, ssub64) +GEN_VEXT_VX_RM(vssub_vx_b, 1, 1, clearb) +GEN_VEXT_VX_RM(vssub_vx_h, 2, 2, clearh) +GEN_VEXT_VX_RM(vssub_vx_w, 4, 4, clearl) +GEN_VEXT_VX_RM(vssub_vx_d, 8, 8, clearq)

[v12,24/61] target/riscv: vector single-width saturating add and subtract

Commit Message

Patch