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[Qemu-devel] [V2 PATCH 31/37] target-ppc: Introduce DFP Convert to Fixed
From: |
Tom Musta |
Subject: |
[Qemu-devel] [V2 PATCH 31/37] target-ppc: Introduce DFP Convert to Fixed |
Date: |
Mon, 21 Apr 2014 15:55:15 -0500 |
Add emulation of the PowerPC Decimal Floating Point Convert to
Fixed instructions dctfix[q][.].
Signed-off-by: Tom Musta <address@hidden>
---
V2: Make post-processor list static const per Richard Henderson's review.
target-ppc/dfp_helper.c | 26 ++++++++++++++++++++++++++
target-ppc/helper.h | 2 ++
target-ppc/translate.c | 4 ++++
3 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/target-ppc/dfp_helper.c b/target-ppc/dfp_helper.c
index 3c92543..0a53b26 100644
--- a/target-ppc/dfp_helper.c
+++ b/target-ppc/dfp_helper.c
@@ -918,3 +918,29 @@ void helper_drdpq(CPUPPCState *env, uint64_t *t, uint64_t
*b)
t[0] = dfp.t64[0];
t[1] = 0;
}
+
+#define DFP_HELPER_CFFIX(op, size)
\
+void helper_##op(CPUPPCState *env, uint64_t *t, uint64_t *b)
\
+{
\
+ struct PPC_DFP dfp;
\
+ dfp_prepare_decimal##size(&dfp, 0, b, env);
\
+ decNumberFromInt64(&dfp.t, (int64_t)(*b));
\
+ decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context);
\
+ CFFIX_PPs(&dfp);
\
+
\
+ if (size == 64) {
\
+ t[0] = dfp.t64[0];
\
+ } else if (size == 128) {
\
+ t[0] = dfp.t64[HI_IDX];
\
+ t[1] = dfp.t64[LO_IDX];
\
+ }
\
+}
+
+static void CFFIX_PPs(struct PPC_DFP *dfp)
+{
+ dfp_set_FPRF_from_FRT(dfp);
+ dfp_check_for_XX(dfp);
+}
+
+DFP_HELPER_CFFIX(dcffix, 64)
+DFP_HELPER_CFFIX(dcffixq, 128)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index d9ef8f6..0f64fb8 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -652,4 +652,6 @@ DEF_HELPER_3(dctdp, void, env, fprp, fprp)
DEF_HELPER_3(dctqpq, void, env, fprp, fprp)
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)
#include "exec/def-helper.h"
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 391f55d..76682f6 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -8390,6 +8390,8 @@ GEN_DFP_T_B_Rc(dctdp)
GEN_DFP_T_B_Rc(dctqpq)
GEN_DFP_T_B_Rc(drsp)
GEN_DFP_T_B_Rc(drdpq)
+GEN_DFP_T_B_Rc(dcffix)
+GEN_DFP_T_B_Rc(dcffixq)
/*** SPE extension ***/
/* Register moves */
@@ -11351,6 +11353,8 @@ GEN_DFP_T_B_Rc(dctdp, 0x02, 0x08),
GEN_DFP_Tp_B_Rc(dctqpq, 0x02, 0x08),
GEN_DFP_T_B_Rc(drsp, 0x02, 0x18),
GEN_DFP_Tp_Bp_Rc(drdpq, 0x02, 0x18),
+GEN_DFP_T_B_Rc(dcffix, 0x02, 0x19),
+GEN_DFP_Tp_B_Rc(dcffixq, 0x02, 0x19),
#undef GEN_SPE
#define GEN_SPE(name0, name1, opc2, opc3, inval0, inval1, type) \
GEN_OPCODE_DUAL(name0##_##name1, 0x04, opc2, opc3, inval0, inval1, type,
PPC_NONE)
--
1.7.1
- [Qemu-devel] [V2 PATCH 21/37] target-ppc: Introduce DFP Compares, (continued)
- [Qemu-devel] [V2 PATCH 21/37] target-ppc: Introduce DFP Compares, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 24/37] target-ppc: Introduce DFP Test Exponent, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 25/37] target-ppc: Introduce DFP Test Significance, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 26/37] target-ppc: Introduce DFP Quantize, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 27/37] target-ppc: Introduce DFP Reround, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 28/37] target-ppc: Introduce DFP Round to Integer, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 29/37] target-ppc: Introduce DFP Convert to Long/Extended, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 30/37] target-ppc: Introduce Round to DFP Short/Long, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 32/37] target-ppc: Introduce DFP Convert to Fixed, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 33/37] target-ppc: Introduce DFP Decode DPD to BCD, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 31/37] target-ppc: Introduce DFP Convert to Fixed,
Tom Musta <=
- [Qemu-devel] [V2 PATCH 34/37] target-ppc: Introduce DFP Encode BCD to DPD, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 36/37] target-ppc: Introduce DFP Insert Biased Exponent, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 35/37] target-ppc: Introduce DFP Extract Biased Exponent, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 37/37] target-ppc: Introduce DFP Shift Significand, Tom Musta, 2014/04/21
- [Qemu-devel] [V2 PATCH 01/37] libdecnumber: Introduce libdecnumber Code, Tom Musta, 2014/04/21