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| author | Tom Musta <tommusta@gmail.com> | 2013-09-25 17:42:46 +1000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-25 23:25:45 +0200 |
| commit | bbfb6f132abc032229f5c1f25e6e959861c6f759 (patch) | |
| tree | b7a4fdb8428be4ae74620c06ac7ebd88f1ac0360 /target-ppc/mem_helper.c | |
| parent | 04f1f7842e18c4b5e50203cc5b207cafb7c62974 (diff) | |
| download | qemu-bbfb6f132abc032229f5c1f25e6e959861c6f759.zip qemu-bbfb6f132abc032229f5c1f25e6e959861c6f759.tar.gz qemu-bbfb6f132abc032229f5c1f25e6e959861c6f759.tar.bz2 | |
target-ppc: Little Endian Correction to Load/Store Vector Element
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 <tommusta@gmail.com>
Reviewed-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/mem_helper.c')
| -rw-r--r-- | target-ppc/mem_helper.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target-ppc/mem_helper.c b/target-ppc/mem_helper.c index d8e63ca..f35ed03 100644 --- a/target-ppc/mem_helper.c +++ b/target-ppc/mem_helper.c @@ -212,6 +212,7 @@ target_ulong helper_lscbx(CPUPPCState *env, target_ulong addr, uint32_t reg, 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 { \ |