[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v1 1/3] target-ppc: add xscmp[eq, gt, ge, ne]dp inst
|
From: |
Nikunj A Dadhania |
|
Subject: |
[Qemu-devel] [PATCH v1 1/3] target-ppc: add xscmp[eq, gt, ge, ne]dp instructions |
|
Date: |
Tue, 25 Oct 2016 11:49:50 +0530 |
From: Sandipan Das <address@hidden>
xscmpeqdp: VSX Scalar Compare Equal Double-Precision
xscmpgedp: VSX Scalar Compare Greater Than or Equal Double-Precision
xscmpgtdp: VSX Scalar Compare Greater Than Double-Precision
xscmpnedp: VSX Scalar Compare Not Equal Double-Precision
Signed-off-by: Sandipan Das <address@hidden>
Signed-off-by: Nikunj A Dadhania <address@hidden>
---
target-ppc/fpu_helper.c | 52 +++++++++++++++++++++++++++++++++++++
target-ppc/helper.h | 4 +++
target-ppc/translate/vsx-impl.inc.c | 4 +++
target-ppc/translate/vsx-ops.inc.c | 4 +++
4 files changed, 64 insertions(+)
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index b0760f0..4906372 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -2362,6 +2362,58 @@ VSX_MADD(xvnmaddmsp, 4, float32, VsrW(i), NMADD_FLGS, 0,
0, 0)
VSX_MADD(xvnmsubasp, 4, float32, VsrW(i), NMSUB_FLGS, 1, 0, 0)
VSX_MADD(xvnmsubmsp, 4, float32, VsrW(i), NMSUB_FLGS, 0, 0, 0)
+/* VSX_SCALAR_CMP_DP - VSX scalar floating point compare double precision
+ * op - instruction mnemonic
+ * cmp - comparison operation
+ * exp - expected result of comparison
+ * svxvc - set VXVC bit
+ */
+#define VSX_SCALAR_CMP_DP(op, cmp, exp, svxvc) \
+void helper_##op(CPUPPCState *env, uint32_t opcode) \
+{ \
+ ppc_vsr_t xt, xa, xb; \
+ bool vxsnan_flag = false, vxvc_flag = false, vex_flag = false; \
+ \
+ getVSR(xA(opcode), &xa, env); \
+ getVSR(xB(opcode), &xb, env); \
+ getVSR(xT(opcode), &xt, env); \
+ \
+ if (float64_is_signaling_nan(xa.VsrD(0), &env->fp_status) || \
+ float64_is_signaling_nan(xb.VsrD(0), &env->fp_status)) { \
+ vxsnan_flag = true; \
+ if (fpscr_ve == 0 && svxvc) { \
+ vxvc_flag = true; \
+ } \
+ } else if (svxvc) { \
+ vxvc_flag = float64_is_quiet_nan(xa.VsrD(0), &env->fp_status) || \
+ float64_is_quiet_nan(xb.VsrD(0), &env->fp_status); \
+ } \
+ if (vxsnan_flag) { \
+ float_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
+ } \
+ if (vxvc_flag) { \
+ float_invalid_op_excp(env, POWERPC_EXCP_FP_VXVC, 0); \
+ } \
+ vex_flag = fpscr_ve && (vxvc_flag || vxsnan_flag); \
+ \
+ if (!vex_flag) { \
+ if (float64_##cmp(xb.VsrD(0), xa.VsrD(0), &env->fp_status) == exp) { \
+ xt.VsrD(0) = -1; \
+ xt.VsrD(1) = 0; \
+ } else { \
+ xt.VsrD(0) = 0; \
+ xt.VsrD(1) = 0; \
+ } \
+ } \
+ putVSR(xT(opcode), &xt, env); \
+ helper_float_check_status(env); \
+}
+
+VSX_SCALAR_CMP_DP(xscmpeqdp, eq, 1, 0)
+VSX_SCALAR_CMP_DP(xscmpgedp, le, 1, 1)
+VSX_SCALAR_CMP_DP(xscmpgtdp, lt, 1, 1)
+VSX_SCALAR_CMP_DP(xscmpnedp, eq, 0, 0)
+
#define VSX_SCALAR_CMP(op, ordered) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 5fcc546..0337292 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -389,6 +389,10 @@ DEF_HELPER_2(xsnmaddadp, void, env, i32)
DEF_HELPER_2(xsnmaddmdp, void, env, i32)
DEF_HELPER_2(xsnmsubadp, void, env, i32)
DEF_HELPER_2(xsnmsubmdp, void, env, i32)
+DEF_HELPER_2(xscmpeqdp, void, env, i32)
+DEF_HELPER_2(xscmpgtdp, void, env, i32)
+DEF_HELPER_2(xscmpgedp, void, env, i32)
+DEF_HELPER_2(xscmpnedp, void, env, i32)
DEF_HELPER_2(xscmpodp, void, env, i32)
DEF_HELPER_2(xscmpudp, void, env, i32)
DEF_HELPER_2(xsmaxdp, void, env, i32)
diff --git a/target-ppc/translate/vsx-impl.inc.c
b/target-ppc/translate/vsx-impl.inc.c
index 1508bd1..bf167d0 100644
--- a/target-ppc/translate/vsx-impl.inc.c
+++ b/target-ppc/translate/vsx-impl.inc.c
@@ -620,6 +620,10 @@ GEN_VSX_HELPER_2(xsnmaddadp, 0x04, 0x14, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsnmaddmdp, 0x04, 0x15, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsnmsubadp, 0x04, 0x16, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsnmsubmdp, 0x04, 0x17, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xscmpeqdp, 0x0C, 0x00, 0, PPC2_ISA300)
+GEN_VSX_HELPER_2(xscmpgtdp, 0x0C, 0x01, 0, PPC2_ISA300)
+GEN_VSX_HELPER_2(xscmpgedp, 0x0C, 0x02, 0, PPC2_ISA300)
+GEN_VSX_HELPER_2(xscmpnedp, 0x0C, 0x03, 0, PPC2_ISA300)
GEN_VSX_HELPER_2(xscmpodp, 0x0C, 0x05, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xscmpudp, 0x0C, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsmaxdp, 0x00, 0x14, 0, PPC2_VSX)
diff --git a/target-ppc/translate/vsx-ops.inc.c
b/target-ppc/translate/vsx-ops.inc.c
index af0d27e..202c557 100644
--- a/target-ppc/translate/vsx-ops.inc.c
+++ b/target-ppc/translate/vsx-ops.inc.c
@@ -114,6 +114,10 @@ GEN_XX3FORM(xsnmaddadp, 0x04, 0x14, PPC2_VSX),
GEN_XX3FORM(xsnmaddmdp, 0x04, 0x15, PPC2_VSX),
GEN_XX3FORM(xsnmsubadp, 0x04, 0x16, PPC2_VSX),
GEN_XX3FORM(xsnmsubmdp, 0x04, 0x17, PPC2_VSX),
+GEN_XX3FORM(xscmpeqdp, 0x0C, 0x00, PPC2_ISA300),
+GEN_XX3FORM(xscmpgtdp, 0x0C, 0x01, PPC2_ISA300),
+GEN_XX3FORM(xscmpgedp, 0x0C, 0x02, PPC2_ISA300),
+GEN_XX3FORM(xscmpnedp, 0x0C, 0x03, PPC2_ISA300),
GEN_XX2IFORM(xscmpodp, 0x0C, 0x05, PPC2_VSX),
GEN_XX2IFORM(xscmpudp, 0x0C, 0x04, PPC2_VSX),
GEN_XX3FORM(xsmaxdp, 0x00, 0x14, PPC2_VSX),
--
2.7.4