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target/riscv: vector single-width bit shift instructions

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Backports 3277d955d21d8943d80062b4cfd8547f831dbd51
This commit is contained in:
LIU Zhiwei 2021-02-26 10:37:07 -05:00 committed by Lioncash
parent 56c0e253c2
commit 244793c4e8
5 changed files with 190 additions and 0 deletions
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24
qemu/header_gen.py
View file

@ -6386,6 +6386,30 @@ riscv_symbols = (
'helper_vxor_vx_h',
'helper_vxor_vx_w',
'helper_vxor_vx_d',
'helper_vsll_vv_b',
'helper_vsll_vv_h',
'helper_vsll_vv_w',
'helper_vsll_vv_d',
'helper_vsrl_vv_b',
'helper_vsrl_vv_h',
'helper_vsrl_vv_w',
'helper_vsrl_vv_d',
'helper_vsra_vv_b',
'helper_vsra_vv_h',
'helper_vsra_vv_w',
'helper_vsra_vv_d',
'helper_vsll_vx_b',
'helper_vsll_vx_h',
'helper_vsll_vx_w',
'helper_vsll_vx_d',
'helper_vsrl_vx_b',
'helper_vsrl_vx_h',
'helper_vsrl_vx_w',
'helper_vsrl_vx_d',
'helper_vsra_vx_b',
'helper_vsra_vx_h',
'helper_vsra_vx_w',
'helper_vsra_vx_d',
'pmp_hart_has_privs',
'pmpaddr_csr_read',
'pmpaddr_csr_write',

25
qemu/target/riscv/helper.h
View file

@ -410,3 +410,28 @@ DEF_HELPER_6(vxor_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vxor_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vxor_vx_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vxor_vx_d, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsll_vv_b, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsll_vv_h, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsll_vv_w, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsll_vv_d, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsrl_vv_b, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsrl_vv_h, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsrl_vv_w, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsrl_vv_d, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsra_vv_b, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsra_vv_h, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsra_vv_w, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsra_vv_d, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vsll_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsll_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsll_vx_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsll_vx_d, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsrl_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsrl_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsrl_vx_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsrl_vx_d, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_b, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_h, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_w, void, ptr, ptr, tl, ptr, env, i32)
DEF_HELPER_6(vsra_vx_d, void, ptr, ptr, tl, ptr, env, i32)

9
qemu/target/riscv/insn32.decode
View file

@ -322,6 +322,15 @@ vor_vi 001010 . ..... ..... 011 ..... 1010111 @r_vm
vxor_vv 001011 . ..... ..... 000 ..... 1010111 @r_vm
vxor_vx 001011 . ..... ..... 100 ..... 1010111 @r_vm
vxor_vi 001011 . ..... ..... 011 ..... 1010111 @r_vm
vsll_vv 100101 . ..... ..... 000 ..... 1010111 @r_vm
vsll_vx 100101 . ..... ..... 100 ..... 1010111 @r_vm
vsll_vi 100101 . ..... ..... 011 ..... 1010111 @r_vm
vsrl_vv 101000 . ..... ..... 000 ..... 1010111 @r_vm
vsrl_vx 101000 . ..... ..... 100 ..... 1010111 @r_vm
vsrl_vi 101000 . ..... ..... 011 ..... 1010111 @r_vm
vsra_vv 101001 . ..... ..... 000 ..... 1010111 @r_vm
vsra_vx 101001 . ..... ..... 100 ..... 1010111 @r_vm
vsra_vi 101001 . ..... ..... 011 ..... 1010111 @r_vm
vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm
vsetvl 1000000 ..... ..... 111 ..... 1010111 @r

53
qemu/target/riscv/insn_trans/trans_rvv.inc.c
View file

@ -1393,3 +1393,56 @@ GEN_OPIVX_GVEC_TRANS(vxor_vx, xors)
GEN_OPIVI_GVEC_TRANS(vand_vi, 0, vand_vx, andi)
GEN_OPIVI_GVEC_TRANS(vor_vi, 0, vor_vx, ori)
GEN_OPIVI_GVEC_TRANS(vxor_vi, 0, vxor_vx, xori)
/* Vector Single-Width Bit Shift Instructions */
GEN_OPIVV_GVEC_TRANS(vsll_vv, shlv)
GEN_OPIVV_GVEC_TRANS(vsrl_vv, shrv)
GEN_OPIVV_GVEC_TRANS(vsra_vv, sarv)
typedef void GVecGen2sFn32(TCGContext *, unsigned, uint32_t, uint32_t, TCGv_i32,
uint32_t, uint32_t);
static inline bool
do_opivx_gvec_shift(DisasContext *s, arg_rmrr *a, GVecGen2sFn32 *gvec_fn,
gen_helper_opivx *fn)
{
if (!opivx_check(s, a)) {
return false;
}
if (a->vm && s->vl_eq_vlmax) {
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv_i32 src1 = tcg_temp_new_i32(tcg_ctx);
TCGv tmp = tcg_temp_new(tcg_ctx);
gen_get_gpr(s, tmp, a->rs1);
tcg_gen_trunc_tl_i32(tcg_ctx, src1, tmp);
tcg_gen_extract_i32(tcg_ctx, src1, src1, 0, s->sew + 3);
gvec_fn(tcg_ctx, s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2),
src1, MAXSZ(s), MAXSZ(s));
tcg_temp_free_i32(tcg_ctx, src1);
tcg_temp_free(tcg_ctx, tmp);
return true;
}
return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s);
}
#define GEN_OPIVX_GVEC_SHIFT_TRANS(NAME, SUF) \
static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \
{ \
static gen_helper_opivx * const fns[4] = { \
gen_helper_##NAME##_b, gen_helper_##NAME##_h, \
gen_helper_##NAME##_w, gen_helper_##NAME##_d, \
}; \
\
return do_opivx_gvec_shift(s, a, tcg_gen_gvec_##SUF, fns[s->sew]); \
}
GEN_OPIVX_GVEC_SHIFT_TRANS(vsll_vx, shls)
GEN_OPIVX_GVEC_SHIFT_TRANS(vsrl_vx, shrs)
GEN_OPIVX_GVEC_SHIFT_TRANS(vsra_vx, sars)
GEN_OPIVI_GVEC_TRANS(vsll_vi, 1, vsll_vx, shli)
GEN_OPIVI_GVEC_TRANS(vsrl_vi, 1, vsrl_vx, shri)
GEN_OPIVI_GVEC_TRANS(vsra_vi, 1, vsra_vx, sari)

79
qemu/target/riscv/vector_helper.c
View file

@ -1317,3 +1317,82 @@ GEN_VEXT_VX(vxor_vx_b, 1, 1, clearb)
GEN_VEXT_VX(vxor_vx_h, 2, 2, clearh)
GEN_VEXT_VX(vxor_vx_w, 4, 4, clearl)
GEN_VEXT_VX(vxor_vx_d, 8, 8, clearq)
/* Vector Single-Width Bit Shift Instructions */
#define DO_SLL(N, M) (N << (M))
#define DO_SRL(N, M) (N >> (M))
/* generate the helpers for shift instructions with two vector operators */
#define GEN_VEXT_SHIFT_VV(NAME, TS1, TS2, HS1, HS2, OP, MASK, CLEAR_FN) \
void HELPER(NAME)(void *vd, void *v0, void *vs1, \
void *vs2, CPURISCVState *env, uint32_t desc) \
{ \
uint32_t mlen = vext_mlen(desc); \
uint32_t vm = vext_vm(desc); \
uint32_t vl = env->vl; \
uint32_t esz = sizeof(TS1); \
uint32_t vlmax = vext_maxsz(desc) / esz; \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
if (!vm && !vext_elem_mask(v0, mlen, i)) { \
continue; \
} \
TS1 s1 = *((TS1 *)vs1 + HS1(i)); \
TS2 s2 = *((TS2 *)vs2 + HS2(i)); \
*((TS1 *)vd + HS1(i)) = OP(s2, s1 & MASK); \
} \
CLEAR_FN(vd, vl, vl * esz, vlmax * esz); \
}
GEN_VEXT_SHIFT_VV(vsll_vv_b, uint8_t, uint8_t, H1, H1, DO_SLL, 0x7, clearb)
GEN_VEXT_SHIFT_VV(vsll_vv_h, uint16_t, uint16_t, H2, H2, DO_SLL, 0xf, clearh)
GEN_VEXT_SHIFT_VV(vsll_vv_w, uint32_t, uint32_t, H4, H4, DO_SLL, 0x1f, clearl)
GEN_VEXT_SHIFT_VV(vsll_vv_d, uint64_t, uint64_t, H8, H8, DO_SLL, 0x3f, clearq)
GEN_VEXT_SHIFT_VV(vsrl_vv_b, uint8_t, uint8_t, H1, H1, DO_SRL, 0x7, clearb)
GEN_VEXT_SHIFT_VV(vsrl_vv_h, uint16_t, uint16_t, H2, H2, DO_SRL, 0xf, clearh)
GEN_VEXT_SHIFT_VV(vsrl_vv_w, uint32_t, uint32_t, H4, H4, DO_SRL, 0x1f, clearl)
GEN_VEXT_SHIFT_VV(vsrl_vv_d, uint64_t, uint64_t, H8, H8, DO_SRL, 0x3f, clearq)
GEN_VEXT_SHIFT_VV(vsra_vv_b, uint8_t, int8_t, H1, H1, DO_SRL, 0x7, clearb)
GEN_VEXT_SHIFT_VV(vsra_vv_h, uint16_t, int16_t, H2, H2, DO_SRL, 0xf, clearh)
GEN_VEXT_SHIFT_VV(vsra_vv_w, uint32_t, int32_t, H4, H4, DO_SRL, 0x1f, clearl)
GEN_VEXT_SHIFT_VV(vsra_vv_d, uint64_t, int64_t, H8, H8, DO_SRL, 0x3f, clearq)
/* generate the helpers for shift instructions with one vector and one scalar */
#define GEN_VEXT_SHIFT_VX(NAME, TD, TS2, HD, HS2, OP, MASK, CLEAR_FN) \
void HELPER(NAME)(void *vd, void *v0, target_ulong s1, \
void *vs2, CPURISCVState *env, uint32_t desc) \
{ \
uint32_t mlen = vext_mlen(desc); \
uint32_t vm = vext_vm(desc); \
uint32_t vl = env->vl; \
uint32_t esz = sizeof(TD); \
uint32_t vlmax = vext_maxsz(desc) / esz; \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
if (!vm && !vext_elem_mask(v0, mlen, i)) { \
continue; \
} \
TS2 s2 = *((TS2 *)vs2 + HS2(i)); \
*((TD *)vd + HD(i)) = OP(s2, s1 & MASK); \
} \
CLEAR_FN(vd, vl, vl * esz, vlmax * esz); \
}
GEN_VEXT_SHIFT_VX(vsll_vx_b, uint8_t, int8_t, H1, H1, DO_SLL, 0x7, clearb)
GEN_VEXT_SHIFT_VX(vsll_vx_h, uint16_t, int16_t, H2, H2, DO_SLL, 0xf, clearh)
GEN_VEXT_SHIFT_VX(vsll_vx_w, uint32_t, int32_t, H4, H4, DO_SLL, 0x1f, clearl)
GEN_VEXT_SHIFT_VX(vsll_vx_d, uint64_t, int64_t, H8, H8, DO_SLL, 0x3f, clearq)
GEN_VEXT_SHIFT_VX(vsrl_vx_b, uint8_t, uint8_t, H1, H1, DO_SRL, 0x7, clearb)
GEN_VEXT_SHIFT_VX(vsrl_vx_h, uint16_t, uint16_t, H2, H2, DO_SRL, 0xf, clearh)
GEN_VEXT_SHIFT_VX(vsrl_vx_w, uint32_t, uint32_t, H4, H4, DO_SRL, 0x1f, clearl)
GEN_VEXT_SHIFT_VX(vsrl_vx_d, uint64_t, uint64_t, H8, H8, DO_SRL, 0x3f, clearq)
GEN_VEXT_SHIFT_VX(vsra_vx_b, int8_t, int8_t, H1, H1, DO_SRL, 0x7, clearb)
GEN_VEXT_SHIFT_VX(vsra_vx_h, int16_t, int16_t, H2, H2, DO_SRL, 0xf, clearh)
GEN_VEXT_SHIFT_VX(vsra_vx_w, int32_t, int32_t, H4, H4, DO_SRL, 0x1f, clearl)
GEN_VEXT_SHIFT_VX(vsra_vx_d, int64_t, int64_t, H8, H8, DO_SRL, 0x3f, clearq)