summary refs log tree commit diff stats
path: root/target/sparc/vis_helper.c
diff options
context:
space:
mode:
authorRichard Henderson <richard.henderson@linaro.org>2024-05-02 09:55:27 -0700
committerMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2024-05-05 21:02:48 +0100
commitd3ef26afde77fbdedd5b30282134ff99d0fe5cc5 (patch)
treeeefc699b7cedda20f7b1667468652fe544715a4b /target/sparc/vis_helper.c
parentbe8998e046c2a7e434494b75cf468ffd9d536025 (diff)
downloadfocaccia-qemu-d3ef26afde77fbdedd5b30282134ff99d0fe5cc5.tar.gz
focaccia-qemu-d3ef26afde77fbdedd5b30282134ff99d0fe5cc5.zip
target/sparc: Fix FPMERGE
This instruction has f32 inputs, which changes the decode
of the register numbers.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-7-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Diffstat (limited to 'target/sparc/vis_helper.c')
-rw-r--r--target/sparc/vis_helper.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/target/sparc/vis_helper.c b/target/sparc/vis_helper.c
index 61c61c7fea..14c665cad6 100644
--- a/target/sparc/vis_helper.c
+++ b/target/sparc/vis_helper.c
@@ -74,22 +74,23 @@ typedef union {
     float32 f;
 } VIS32;
 
-uint64_t helper_fpmerge(uint64_t src1, uint64_t src2)
+uint64_t helper_fpmerge(uint32_t src1, uint32_t src2)
 {
-    VIS64 s, d;
+    VIS32 s1, s2;
+    VIS64 d;
 
-    s.ll = src1;
-    d.ll = src2;
+    s1.l = src1;
+    s2.l = src2;
+    d.ll = 0;
 
-    /* Reverse calculation order to handle overlap */
-    d.VIS_B64(7) = s.VIS_B64(3);
-    d.VIS_B64(6) = d.VIS_B64(3);
-    d.VIS_B64(5) = s.VIS_B64(2);
-    d.VIS_B64(4) = d.VIS_B64(2);
-    d.VIS_B64(3) = s.VIS_B64(1);
-    d.VIS_B64(2) = d.VIS_B64(1);
-    d.VIS_B64(1) = s.VIS_B64(0);
-    /* d.VIS_B64(0) = d.VIS_B64(0); */
+    d.VIS_B64(7) = s1.VIS_B32(3);
+    d.VIS_B64(6) = s2.VIS_B32(3);
+    d.VIS_B64(5) = s1.VIS_B32(2);
+    d.VIS_B64(4) = s2.VIS_B32(2);
+    d.VIS_B64(3) = s1.VIS_B32(1);
+    d.VIS_B64(2) = s2.VIS_B32(1);
+    d.VIS_B64(1) = s1.VIS_B32(0);
+    d.VIS_B64(0) = s2.VIS_B32(0);
 
     return d.ll;
 }