From: Luis Pires <luis.pires@eldorado.org.br>
To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org
Cc: Luis Pires <luis.pires@eldorado.org.br>,
richard.henderson@linaro.org, groug@kaod.org,
david@gibson.dropbear.id.au
Subject: [PATCH v3 12/22] target/ppc: Implement DCFFIXQQ
Date: Fri, 10 Sep 2021 08:26:14 -0300 [thread overview]
Message-ID: <20210910112624.72748-13-luis.pires@eldorado.org.br> (raw)
In-Reply-To: <20210910112624.72748-1-luis.pires@eldorado.org.br>
Implement the following PowerISA v3.1 instruction:
dcffixqq: DFP Convert From Fixed Quadword Quad
Signed-off-by: Luis Pires <luis.pires@eldorado.org.br>
---
target/ppc/dfp_helper.c | 11 +++++++++++
target/ppc/helper.h | 1 +
target/ppc/insn32.decode | 8 ++++++++
target/ppc/translate.c | 5 +++++
target/ppc/translate/dfp-impl.c.inc | 17 +++++++++++++++++
5 files changed, 42 insertions(+)
diff --git a/target/ppc/dfp_helper.c b/target/ppc/dfp_helper.c
index 07341a69f5..01a7ead783 100644
--- a/target/ppc/dfp_helper.c
+++ b/target/ppc/dfp_helper.c
@@ -970,6 +970,17 @@ static void CFFIX_PPs(struct PPC_DFP *dfp)
DFP_HELPER_CFFIX(dcffix, 64)
DFP_HELPER_CFFIX(dcffixq, 128)
+void helper_DCFFIXQQ(CPUPPCState *env, ppc_fprp_t *t, ppc_avr_t *b)
+{
+ struct PPC_DFP dfp;
+ dfp_prepare_decimal128(&dfp, NULL, NULL, env);
+ decNumberFromInt128(&dfp.t, (uint64_t)b->VsrD(1), (int64_t)b->VsrD(0));
+ dfp_finalize_decimal128(&dfp);
+ CFFIX_PPs(&dfp);
+
+ set_dfp128(t, &dfp.vt);
+}
+
#define DFP_HELPER_CTFIX(op, size) \
void helper_##op(CPUPPCState *env, ppc_fprp_t *t, ppc_fprp_t *b) \
{ \
diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index 4076aa281e..fff7bd46ad 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -734,6 +734,7 @@ DEF_HELPER_3(drsp, void, env, fprp, fprp)
DEF_HELPER_3(drdpq, void, env, fprp, fprp)
DEF_HELPER_3(dcffix, void, env, fprp, fprp)
DEF_HELPER_3(dcffixq, void, env, fprp, fprp)
+DEF_HELPER_3(DCFFIXQQ, void, env, fprp, avr)
DEF_HELPER_3(dctfix, void, env, fprp, fprp)
DEF_HELPER_3(dctfixq, void, env, fprp, fprp)
DEF_HELPER_4(ddedpd, void, env, fprp, fprp, i32)
diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 9fd8d6b817..92ea2d0739 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -43,6 +43,10 @@
&X_bfl bf l:bool ra rb
@X_bfl ...... bf:3 - l:1 ra:5 rb:5 ..........- &X_bfl
+&X_frtp_vrb frtp vrb
+%x_frtp 22:4 !function=times_2
+@X_frtp_vrb ...... ....0 ..... vrb:5 .......... . &X_frtp_vrb frtp=%x_frtp
+
### Fixed-Point Load Instructions
LBZ 100010 ..... ..... ................ @D
@@ -121,6 +125,10 @@ SETBCR 011111 ..... ..... ----- 0110100000 - @X_bi
SETNBC 011111 ..... ..... ----- 0111000000 - @X_bi
SETNBCR 011111 ..... ..... ----- 0111100000 - @X_bi
+### Decimal Floating-Point Conversion Instructions
+
+DCFFIXQQ 111111 ..... 00000 ..... 1111100010 - @X_frtp_vrb
+
## Vector Bit Manipulation Instruction
VCFUGED 000100 ..... ..... ..... 10101001101 @VX
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 5489b4b6e0..9e940a1a17 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -7422,6 +7422,11 @@ static inline void set_avr64(int regno, TCGv_i64 src, bool high)
/*
* Helpers for decodetree used by !function for decoding arguments.
*/
+static int times_2(DisasContext *ctx, int x)
+{
+ return x * 2;
+}
+
static int times_4(DisasContext *ctx, int x)
{
return x * 4;
diff --git a/target/ppc/translate/dfp-impl.c.inc b/target/ppc/translate/dfp-impl.c.inc
index 6c556dc2e1..d5b66567a6 100644
--- a/target/ppc/translate/dfp-impl.c.inc
+++ b/target/ppc/translate/dfp-impl.c.inc
@@ -230,3 +230,20 @@ GEN_DFP_T_FPR_I32_Rc(dscriq, rA, DCM)
#undef GEN_DFP_T_A_B_I32_Rc
#undef GEN_DFP_T_B_Rc
#undef GEN_DFP_T_FPR_I32_Rc
+
+static bool trans_DCFFIXQQ(DisasContext *ctx, arg_DCFFIXQQ *a)
+{
+ TCGv_ptr rt, rb;
+
+ REQUIRE_INSNS_FLAGS2(ctx, DFP);
+ REQUIRE_FPU(ctx);
+ REQUIRE_VECTOR(ctx);
+
+ rt = gen_fprp_ptr(a->frtp);
+ rb = gen_avr_ptr(a->vrb);
+ gen_helper_DCFFIXQQ(cpu_env, rt, rb);
+ tcg_temp_free_ptr(rt);
+ tcg_temp_free_ptr(rb);
+
+ return true;
+}
--
2.25.1
next prev parent reply other threads:[~2021-09-10 11:49 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-10 11:26 [PATCH v3 00/22] target/ppc: DFP instructions using decodetree Luis Pires
2021-09-10 11:26 ` [PATCH v3 01/22] host-utils: Fix overflow detection in divu128() Luis Pires
2021-09-10 11:26 ` [PATCH v3 02/22] host-utils: fix missing zero-extension in divs128 Luis Pires
2021-10-21 20:02 ` Richard Henderson
2021-09-10 11:26 ` [PATCH v3 03/22] host-utils: introduce uabs64() Luis Pires
2021-10-21 20:04 ` Richard Henderson
2021-10-21 22:34 ` Eduardo Habkost
2021-10-21 23:23 ` Richard Henderson
2021-09-10 11:26 ` [PATCH v3 04/22] i386/kvm: Replace abs64() with uabs64() from host-utils Luis Pires
2021-09-10 11:26 ` [PATCH v3 05/22] host-utils: move checks out of divu128/divs128 Luis Pires
2021-10-21 20:11 ` Richard Henderson
2021-09-10 11:26 ` [PATCH v3 06/22] host-utils: move udiv_qrnnd() to host-utils Luis Pires
2021-10-21 20:14 ` Richard Henderson
2021-09-10 11:26 ` [PATCH v3 07/22] host-utils: add 128-bit quotient support to divu128/divs128 Luis Pires
2021-10-21 21:14 ` Richard Henderson
2021-10-25 18:51 ` Luis Fernando Fujita Pires
2021-09-10 11:26 ` [PATCH v3 08/22] host-utils: add unit tests for divu128/divs128 Luis Pires
2021-10-21 21:16 ` Richard Henderson
2021-09-10 11:26 ` [PATCH v3 09/22] libdecnumber: introduce decNumberFrom[U]Int128 Luis Pires
2021-09-10 11:26 ` [PATCH v3 10/22] target/ppc: Move REQUIRE_ALTIVEC/VECTOR to translate.c Luis Pires
2021-09-10 11:26 ` [PATCH v3 11/22] target/ppc: Introduce REQUIRE_FPU Luis Pires
2021-09-10 11:26 ` Luis Pires [this message]
2021-10-21 21:27 ` [PATCH v3 12/22] target/ppc: Implement DCFFIXQQ Richard Henderson
2021-09-10 11:26 ` [PATCH v3 13/22] host-utils: Introduce mulu128 Luis Pires
2021-09-10 11:26 ` [PATCH v3 14/22] libdecnumber: Introduce decNumberIntegralToInt128 Luis Pires
2021-09-10 11:26 ` [PATCH v3 15/22] target/ppc: Implement DCTFIXQQ Luis Pires
2021-10-21 21:39 ` Richard Henderson
2021-10-25 18:51 ` Luis Fernando Fujita Pires
2021-09-10 11:26 ` [PATCH v3 16/22] target/ppc: Move dtstdc[q]/dtstdg[q] to decodetree Luis Pires
2021-10-21 21:58 ` Richard Henderson
2021-10-25 18:52 ` Luis Fernando Fujita Pires
2021-09-10 11:26 ` [PATCH v3 17/22] target/ppc: Move d{add, sub, mul, div, iex}[q] " Luis Pires
2021-10-21 22:05 ` [PATCH v3 17/22] target/ppc: Move d{add,sub,mul,div,iex}[q] " Richard Henderson
2021-09-10 11:26 ` [PATCH v3 18/22] target/ppc: Move dcmp{u, o}[q], dts{tex, tsf, tsfi}[q] " Luis Pires
2021-10-21 22:15 ` [PATCH v3 18/22] target/ppc: Move dcmp{u,o}[q],dts{tex,tsf,tsfi}[q] " Richard Henderson
2021-09-10 11:26 ` [PATCH v3 19/22] target/ppc: Move dquai[q], drint{x, n}[q] " Luis Pires
2021-10-21 22:22 ` [PATCH v3 19/22] target/ppc: Move dquai[q], drint{x,n}[q] " Richard Henderson
2021-09-10 11:26 ` [PATCH v3 20/22] target/ppc: Move dqua[q], drrnd[q] " Luis Pires
2021-10-21 22:27 ` Richard Henderson
2021-09-10 11:26 ` [PATCH v3 21/22] target/ppc: Move dct{dp, qpq}, dr{sp, dpq}, dc{f, t}fix[q], dxex[q] " Luis Pires
2021-10-21 22:35 ` [PATCH v3 21/22] target/ppc: Move dct{dp,qpq},dr{sp,dpq},dc{f,t}fix[q],dxex[q] " Richard Henderson
2021-09-10 11:26 ` [PATCH v3 22/22] target/ppc: Move ddedpd[q], denbcd[q], dscli[q], dscri[q] " Luis Pires
2021-10-21 23:21 ` [PATCH v3 22/22] target/ppc: Move ddedpd[q],denbcd[q],dscli[q],dscri[q] " Richard Henderson
2021-09-15 3:15 ` [PATCH v3 00/22] target/ppc: DFP instructions using decodetree David Gibson
2021-09-20 18:50 ` Luis Fernando Fujita Pires
2021-10-14 17:02 ` Luis Fernando Fujita Pires
2021-10-15 3:15 ` david
2021-10-15 11:52 ` Luis Fernando Fujita Pires
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