[Qemu-devel] [V6 PATCH 17/18] target-ppc: Scalar Round to Single Precision

[Tom Musta]

This patch adds the VSX Scalar Round to Single Precision (xsrsp)
instruction.

Signed-off-by: Tom Musta <address@hidden>
---
V6: New.

 target-ppc/fpu_helper.c |   17 +++++++++++++++++
 target-ppc/helper.h     |    1 +
 target-ppc/translate.c  |    2 ++
 3 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index 1dfb3c0..c1524e3 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -2666,3 +2666,20 @@ VSX_ROUND(xvrspic, 4, float32, f32, FLOAT_ROUND_CURRENT, 
0)
 VSX_ROUND(xvrspim, 4, float32, f32, float_round_down, 0)
 VSX_ROUND(xvrspip, 4, float32, f32, float_round_up, 0)
 VSX_ROUND(xvrspiz, 4, float32, f32, float_round_to_zero, 0)
+
+void helper_xsrsp(CPUPPCState *env, uint32_t opcode)
+{
+    ppc_vsr_t xt, xb;
+
+    getVSR(xB(opcode), &xb, env);
+    getVSR(xT(opcode), &xt, env);
+
+    helper_reset_fpstatus(env);
+
+    xt.f64[0] = helper_frsp(env, xb.f64[0]);
+
+    helper_compute_fprf(env, xt.f64[0], 1);
+
+    putVSR(xT(opcode), &xt, env);
+    helper_float_check_status(env);
+}
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 6250eba..300e194 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -293,6 +293,7 @@ DEF_HELPER_2(xssubsp, void, env, i32)
 DEF_HELPER_2(xsmulsp, void, env, i32)
 DEF_HELPER_2(xsdivsp, void, env, i32)
 DEF_HELPER_2(xsresp, void, env, i32)
+DEF_HELPER_2(xsrsp, void, env, i32)
 DEF_HELPER_2(xssqrtsp, void, env, i32)
 DEF_HELPER_2(xsrsqrtesp, void, env, i32)
 DEF_HELPER_2(xsmaddasp, void, env, i32)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 7f2a66f..48b93c8 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7426,6 +7426,7 @@ GEN_VSX_HELPER_2(xssubsp, 0x00, 0x01, 0, PPC2_VSX207)
 GEN_VSX_HELPER_2(xsmulsp, 0x00, 0x02, 0, PPC2_VSX207)
 GEN_VSX_HELPER_2(xsdivsp, 0x00, 0x03, 0, PPC2_VSX207)
 GEN_VSX_HELPER_2(xsresp, 0x14, 0x01, 0, PPC2_VSX207)
+GEN_VSX_HELPER_2(xsrsp, 0x12, 0x11, 0, PPC2_VSX207)
 GEN_VSX_HELPER_2(xssqrtsp, 0x16, 0x00, 0, PPC2_VSX207)
 GEN_VSX_HELPER_2(xsrsqrtesp, 0x14, 0x00, 0, PPC2_VSX207)
 GEN_VSX_HELPER_2(xsmaddasp, 0x04, 0x00, 0, PPC2_VSX207)
@@ -10263,6 +10264,7 @@ GEN_XX3FORM(xssubsp, 0x00, 0x01, PPC2_VSX207),
 GEN_XX3FORM(xsmulsp, 0x00, 0x02, PPC2_VSX207),
 GEN_XX3FORM(xsdivsp, 0x00, 0x03, PPC2_VSX207),
 GEN_XX2FORM(xsresp,  0x14, 0x01, PPC2_VSX207),
+GEN_XX2FORM(xsrsp, 0x12, 0x11, PPC2_VSX207),
 GEN_XX2FORM(xssqrtsp,  0x16, 0x00, PPC2_VSX207),
 GEN_XX2FORM(xsrsqrtesp,  0x14, 0x00, PPC2_VSX207),
 GEN_XX3FORM(xsmaddasp, 0x04, 0x00, PPC2_VSX207),
-- 
1.7.1