From b090f4f1e3c9f0531e3250e3a9d0a2bcc5b53f7e Mon Sep 17 00:00:00 2001 From: Matheus Ferst Date: Wed, 2 Mar 2022 06:51:38 +0100 Subject: [PATCH] target/ppc: Implement xxgenpcv[bhwd]m instruction MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Matheus Ferst Reviewed-by: Richard Henderson Message-Id: <20220225210936.1749575-36-matheus.ferst@eldorado.org.br> Signed-off-by: Cédric Le Goater --- target/ppc/helper.h | 16 +++++ target/ppc/insn32.decode | 10 ++++ target/ppc/int_helper.c | 91 +++++++++++++++++++++++++++++ target/ppc/translate/vsx-impl.c.inc | 43 ++++++++++++++ 4 files changed, 160 insertions(+) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 13034bca58..008cd6405d 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -494,6 +494,22 @@ DEF_HELPER_3(xvrspic, void, env, vsr, vsr) DEF_HELPER_3(xvrspim, void, env, vsr, vsr) DEF_HELPER_3(xvrspip, void, env, vsr, vsr) DEF_HELPER_3(xvrspiz, void, env, vsr, vsr) +DEF_HELPER_FLAGS_2(XXGENPCVBM_be_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVBM_be_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVBM_le_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVBM_le_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVHM_be_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVHM_be_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVHM_le_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVHM_le_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVWM_be_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVWM_be_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVWM_le_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVWM_le_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVDM_be_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVDM_be_comp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVDM_le_exp, TCG_CALL_NO_RWG, void, vsr, avr) +DEF_HELPER_FLAGS_2(XXGENPCVDM_le_comp, TCG_CALL_NO_RWG, void, vsr, avr) DEF_HELPER_4(xxextractuw, void, env, vsr, vsr, i32) DEF_HELPER_FLAGS_5(XXPERMX, TCG_CALL_NO_RWG, void, vsr, vsr, vsr, vsr, tl) DEF_HELPER_4(xxinsertw, void, env, vsr, vsr, i32) diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index b8dbac553e..22b245607b 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -119,6 +119,9 @@ @X_bfl ...... bf:3 - l:1 ra:5 rb:5 ..........- &X_bfl %x_xt 0:1 21:5 +&X_imm5 xt imm:uint8_t vrb +@X_imm5 ...... ..... imm:5 vrb:5 .......... . &X_imm5 xt=%x_xt + &X_imm8 xt imm:uint8_t @X_imm8 ...... ..... .. imm:8 .......... . &X_imm8 xt=%x_xt @@ -615,6 +618,13 @@ XXPERMDI 111100 ..... ..... ..... 0 .. 01010 ... @XX3_dm XXSEL 111100 ..... ..... ..... ..... 11 .... @XX4 +## VSX Vector Generate PCV + +XXGENPCVBM 111100 ..... ..... ..... 1110010100 . @X_imm5 +XXGENPCVHM 111100 ..... ..... ..... 1110010101 . @X_imm5 +XXGENPCVWM 111100 ..... ..... ..... 1110110100 . @X_imm5 +XXGENPCVDM 111100 ..... ..... ..... 1110110101 . @X_imm5 + ## VSX Vector Load Special Value Instruction LXVKQ 111100 ..... 11111 ..... 0101101000 . @X_uim5 diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index ca59cd3d79..b2b17bb1ca 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -1072,6 +1072,97 @@ void helper_VPERMR(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c) *r = result; } +#define XXGENPCV(NAME, SZ) \ +void glue(helper_, glue(NAME, _be_exp))(ppc_vsr_t *t, ppc_vsr_t *b) \ +{ \ + ppc_vsr_t tmp; \ + \ + /* Initialize tmp with the result of an all-zeros mask */ \ + tmp.VsrD(0) = 0x1011121314151617; \ + tmp.VsrD(1) = 0x18191A1B1C1D1E1F; \ + \ + /* Iterate over the most significant byte of each element */ \ + for (int i = 0, j = 0; i < ARRAY_SIZE(b->u8); i += SZ) { \ + if (b->VsrB(i) & 0x80) { \ + /* Update each byte of the element */ \ + for (int k = 0; k < SZ; k++) { \ + tmp.VsrB(i + k) = j + k; \ + } \ + j += SZ; \ + } \ + } \ + \ + *t = tmp; \ +} \ + \ +void glue(helper_, glue(NAME, _be_comp))(ppc_vsr_t *t, ppc_vsr_t *b)\ +{ \ + ppc_vsr_t tmp = { .u64 = { 0, 0 } }; \ + \ + /* Iterate over the most significant byte of each element */ \ + for (int i = 0, j = 0; i < ARRAY_SIZE(b->u8); i += SZ) { \ + if (b->VsrB(i) & 0x80) { \ + /* Update each byte of the element */ \ + for (int k = 0; k < SZ; k++) { \ + tmp.VsrB(j + k) = i + k; \ + } \ + j += SZ; \ + } \ + } \ + \ + *t = tmp; \ +} \ + \ +void glue(helper_, glue(NAME, _le_exp))(ppc_vsr_t *t, ppc_vsr_t *b) \ +{ \ + ppc_vsr_t tmp; \ + \ + /* Initialize tmp with the result of an all-zeros mask */ \ + tmp.VsrD(0) = 0x1F1E1D1C1B1A1918; \ + tmp.VsrD(1) = 0x1716151413121110; \ + \ + /* Iterate over the most significant byte of each element */ \ + for (int i = 0, j = 0; i < ARRAY_SIZE(b->u8); i += SZ) { \ + /* Reverse indexing of "i" */ \ + const int idx = ARRAY_SIZE(b->u8) - i - SZ; \ + if (b->VsrB(idx) & 0x80) { \ + /* Update each byte of the element */ \ + for (int k = 0, rk = SZ - 1; k < SZ; k++, rk--) { \ + tmp.VsrB(idx + rk) = j + k; \ + } \ + j += SZ; \ + } \ + } \ + \ + *t = tmp; \ +} \ + \ +void glue(helper_, glue(NAME, _le_comp))(ppc_vsr_t *t, ppc_vsr_t *b)\ +{ \ + ppc_vsr_t tmp = { .u64 = { 0, 0 } }; \ + \ + /* Iterate over the most significant byte of each element */ \ + for (int i = 0, j = 0; i < ARRAY_SIZE(b->u8); i += SZ) { \ + if (b->VsrB(ARRAY_SIZE(b->u8) - i - SZ) & 0x80) { \ + /* Update each byte of the element */ \ + for (int k = 0, rk = SZ - 1; k < SZ; k++, rk--) { \ + /* Reverse indexing of "j" */ \ + const int idx = ARRAY_SIZE(b->u8) - j - SZ; \ + tmp.VsrB(idx + rk) = i + k; \ + } \ + j += SZ; \ + } \ + } \ + \ + *t = tmp; \ +} + +XXGENPCV(XXGENPCVBM, 1) +XXGENPCV(XXGENPCVHM, 2) +XXGENPCV(XXGENPCVWM, 4) +XXGENPCV(XXGENPCVDM, 8) +#undef XXGENPCV + #if defined(HOST_WORDS_BIGENDIAN) #define VBPERMQ_INDEX(avr, i) ((avr)->u8[(i)]) #define VBPERMD_INDEX(i) (i) diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc index b5e07cf3df..6528e1ae31 100644 --- a/target/ppc/translate/vsx-impl.c.inc +++ b/target/ppc/translate/vsx-impl.c.inc @@ -1256,6 +1256,49 @@ static bool trans_XXPERMX(DisasContext *ctx, arg_8RR_XX4_uim3 *a) return true; } +#define XXGENPCV(NAME) \ +static bool trans_##NAME(DisasContext *ctx, arg_X_imm5 *a) \ +{ \ + TCGv_ptr xt, vrb; \ + \ + REQUIRE_INSNS_FLAGS2(ctx, ISA310); \ + REQUIRE_VSX(ctx); \ + \ + if (a->imm & ~0x3) { \ + gen_invalid(ctx); \ + return true; \ + } \ + \ + xt = gen_vsr_ptr(a->xt); \ + vrb = gen_avr_ptr(a->vrb); \ + \ + switch (a->imm) { \ + case 0b00000: /* Big-Endian expansion */ \ + glue(gen_helper_, glue(NAME, _be_exp))(xt, vrb); \ + break; \ + case 0b00001: /* Big-Endian compression */ \ + glue(gen_helper_, glue(NAME, _be_comp))(xt, vrb); \ + break; \ + case 0b00010: /* Little-Endian expansion */ \ + glue(gen_helper_, glue(NAME, _le_exp))(xt, vrb); \ + break; \ + case 0b00011: /* Little-Endian compression */ \ + glue(gen_helper_, glue(NAME, _le_comp))(xt, vrb); \ + break; \ + } \ + \ + tcg_temp_free_ptr(xt); \ + tcg_temp_free_ptr(vrb); \ + \ + return true; \ +} + +XXGENPCV(XXGENPCVBM) +XXGENPCV(XXGENPCVHM) +XXGENPCV(XXGENPCVWM) +XXGENPCV(XXGENPCVDM) +#undef XXGENPCV + #define GEN_VSX_HELPER_VSX_MADD(name, op1, aop, mop, inval, type) \ static void gen_##name(DisasContext *ctx) \ { \