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[Qemu-devel] [PATCH 22/37] target-ppc: Introduce DFP Test Data Class
From: |
Tom Musta |
Subject: |
[Qemu-devel] [PATCH 22/37] target-ppc: Introduce DFP Test Data Class |
Date: |
Fri, 18 Apr 2014 09:50:26 -0500 |
Add emulation of the PowerPC Decimal Floating Point Test Data Class
instructions dtstdc[q][.].
Signed-off-by: Tom Musta <address@hidden>
---
target-ppc/dfp_helper.c | 32 ++++++++++++++++++++++++++++++++
target-ppc/helper.h | 2 ++
target-ppc/translate.c | 4 ++++
3 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/target-ppc/dfp_helper.c b/target-ppc/dfp_helper.c
index 87163dd..625df93 100644
--- a/target-ppc/dfp_helper.c
+++ b/target-ppc/dfp_helper.c
@@ -425,3 +425,35 @@ PPC_DFP_PostProc CMPO_PPs[] = {
DFP_HELPER_BF_AB(dcmpo, decNumberCompare, CMPO_PPs, 64)
DFP_HELPER_BF_AB(dcmpoq, decNumberCompare, CMPO_PPs, 128)
+
+PPC_DFP_PostProc DTST_PPs[] = {
+ dfp_set_FPCC_from_CRBF,
+};
+
+#define DFP_HELPER_TSTDC(op, size) \
+uint32_t helper_##op(CPUPPCState *env, uint64_t *a, uint32_t dcm) \
+{ \
+ struct PPC_DFP dfp; \
+ int match = 0; \
+ \
+ dfp_prepare_decimal##size(&dfp, a, 0, env); \
+ \
+ match |= (dcm & 0x20) && decNumberIsZero(&dfp.a); \
+ match |= (dcm & 0x10) && decNumberIsSubnormal(&dfp.a, &dfp.context); \
+ match |= (dcm & 0x08) && decNumberIsNormal(&dfp.a, &dfp.context); \
+ match |= (dcm & 0x04) && decNumberIsInfinite(&dfp.a); \
+ match |= (dcm & 0x02) && decNumberIsQNaN(&dfp.a); \
+ match |= (dcm & 0x01) && decNumberIsSNaN(&dfp.a); \
+ \
+ if (decNumberIsNegative(&dfp.a)) { \
+ dfp.crbf = match ? 0xA : 0x8; \
+ } else { \
+ dfp.crbf = match ? 0x2 : 0x0; \
+ } \
+ \
+ dfp_run_post_processors(&dfp, DTST_PPs, ARRAY_SIZE(DTST_PPs)); \
+ return dfp.crbf; \
+}
+
+DFP_HELPER_TSTDC(dtstdc, 64)
+DFP_HELPER_TSTDC(dtstdcq, 128)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 68ac7a0..95d5a36 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -630,4 +630,6 @@ DEF_HELPER_3(dcmpo, i32, env, fprp, fprp)
DEF_HELPER_3(dcmpoq, i32, env, fprp, fprp)
DEF_HELPER_3(dcmpu, i32, env, fprp, fprp)
DEF_HELPER_3(dcmpuq, i32, env, fprp, fprp)
+DEF_HELPER_3(dtstdc, i32, env, fprp, i32)
+DEF_HELPER_3(dtstdcq, i32, env, fprp, i32)
#include "exec/def-helper.h"
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index ccc5a83..b4bc126 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -8368,6 +8368,8 @@ GEN_DFP_BF_A_B(dcmpu)
GEN_DFP_BF_A_B(dcmpuq)
GEN_DFP_BF_A_B(dcmpo)
GEN_DFP_BF_A_B(dcmpoq)
+GEN_DFP_BF_A_DCM(dtstdc)
+GEN_DFP_BF_A_DCM(dtstdcq)
/*** SPE extension ***/
/* Register moves */
@@ -11307,6 +11309,8 @@ GEN_DFP_BF_A_B(dcmpu, 0x02, 0x14),
GEN_DFP_BF_Ap_Bp(dcmpuq, 0x02, 0x14),
GEN_DFP_BF_A_B(dcmpo, 0x02, 0x04),
GEN_DFP_BF_Ap_Bp(dcmpoq, 0x02, 0x04),
+GEN_DFP_BF_A_DCM(dtstdc, 0x02, 0x06),
+GEN_DFP_BF_Ap_DCM(dtstdcq, 0x02, 0x06),
#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] [PATCH 12/37] target-ppc: Define FPR Pointer Type for Helpers, (continued)
- [Qemu-devel] [PATCH 12/37] target-ppc: Define FPR Pointer Type for Helpers, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 13/37] target-ppc: Introduce Generator Macros for DFP Arithmetic Forms, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 15/37] target-ppc: Introduce DFP Helper Utilities, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 14/37] target-ppc: Introduce Decoder Macros for DFP, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 16/37] target-ppc: Introduce DFP Post Processor Utilities, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 17/37] target-ppc: Introduce DFP Add, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 19/37] target-ppc: Introduce DFP Multiply, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 20/37] target-ppc: Introduce DFP Divide, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 18/37] target-ppc: Introduce DFP Subtract, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 21/37] target-ppc: Introduce DFP Compares, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 22/37] target-ppc: Introduce DFP Test Data Class,
Tom Musta <=
- [Qemu-devel] [PATCH 23/37] target-ppc: Introduce DFP Test Data Group, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 24/37] target-ppc: Introduce DFP Test Exponent, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 25/37] target-ppc: Introduce DFP Test Significance, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 26/37] target-ppc: Introduce DFP Quantize, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 27/37] target-ppc: Introduce DFP Reround, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 29/37] target-ppc: Introduce DFP Convert to Long/Extended, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 28/37] target-ppc: Introduce DFP Round to Integer, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 30/37] target-ppc: Introduce Round to DFP Short/Long, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 31/37] target-ppc: Introduce DFP Convert to Fixed, Tom Musta, 2014/04/18
- [Qemu-devel] [PATCH 32/37] target-ppc: Introduce DFP Convert to Fixed, Tom Musta, 2014/04/18