This change defines accessors for VSR doubleword and word fields that
are correct from a host Endian perspective. This allows code to
use the Power ISA indexing numbers in code.
For example, the xscvdpsxws instruction has a target VSR that looks
like this:
0 32 64 127
+-----------+--------+-----------+-----------+
| undefined | SW | undefined | undefined |
+-----------+--------+-----------+-----------+
VSX helper code will use VsrW(1) to access this field.
Signed-off-by: Tom Musta <tommu...@gmail.com>
Tested-by: Tom Musta <tommu...@gmail.com>
---
target-ppc/fpu_helper.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index 691d572..d79aae9 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -1782,6 +1782,14 @@ typedef union _ppc_vsr_t {
float64 f64[2];
} ppc_vsr_t;
+#if defined(HOST_WORDS_BIGENDIAN)
+#define VsrW(i) u32[i]
+#define VsrD(i) u64[i]
+#else
+#define VsrW(i) u32[3-(i)]
+#define VsrD(i) u64[1-(i)]
+#endif
+
static void getVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
{
if (n < 32) {
--
1.7.1
