From: Tom Musta <[email protected]>
The Load Vector Element (lve*x) and Store Vector Element (stve*x)
instructions not only byte-swap in Little Endian mode, they also
invert the element that is accessed. For example, the RTL for
lvehx contains this:
eb <-- EA[60:63]
if Big-Endian byte ordering then
VRT[8*eb:8*eb+15] <-- MEM(EA,2)
else
VRT[112-(8*eb):127-(8*eb)] <-- MEM(EA,2)
This patch adds the element inversion, as described in the last line
of the RTL.
Signed-off-by: Tom Musta <[email protected]>
Reviewed-by: Anton Blanchard <[email protected]>
---
Index: b/target-ppc/mem_helper.c
===================================================================
--- a/target-ppc/mem_helper.c
+++ b/target-ppc/mem_helper.c
@@ -212,6 +212,7 @@ target_ulong helper_lscbx(CPUPPCState *e
int index = (addr & 0xf) >> sh; \
\
if (msr_le) { \
+ index = n_elems - index - 1; \
r->element[LO_IDX ? index : (adjust - index)] = \
swap(access(env, addr)); \
} else { \
@@ -236,6 +237,7 @@ LVE(lvewx, cpu_ldl_data, bswap32, u32)
int index = (addr & 0xf) >> sh; \
\
if (msr_le) { \
+ index = n_elems - index - 1; \
access(env, addr, swap(r->element[LO_IDX ? index : \
(adjust - index)])); \
} else { \
