[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 0/2] target/ppc: Fix vextu[bhw][lr]x on big endian hosts
From: |
matheus . ferst |
Subject: |
[PATCH 0/2] target/ppc: Fix vextu[bhw][lr]x on big endian hosts |
Date: |
Tue, 24 Aug 2021 17:11:03 -0300 |
From: Matheus Ferst <matheus.ferst@eldorado.org.br>
The definition of struct Int128 is currently independent of the host
endianness, causing different results when using the member s128 of
union ppc_vsr_t in big-endian builds with CONFIG_INT128 or
!CONFIG_INT128.
The only PPC instructions that seem to be affected by this issue are the
"Vector Extract Unsigned Byte/Halfword/Word to GPR using GPR-specified
Left/Right-Index." Even on builds with Int128 support, however, their
helpers give the wrong result on big-endian hosts.
The first patch in this series changes the definition of struct Int128
to allow its use in the ppc_vsr_t union. The second patch fixes the
helper definition.
Matheus Ferst (2):
include/qemu/int128.h: define struct Int128 according to the host
endianness
target/ppc: fix vextu[bhw][lr]x helpers
include/qemu/int128.h | 19 ++++++++++++-------
target/ppc/int_helper.c | 38 ++++++++++----------------------------
2 files changed, 22 insertions(+), 35 deletions(-)
--
2.25.1
- [PATCH 0/2] target/ppc: Fix vextu[bhw][lr]x on big endian hosts,
matheus . ferst <=
- [PATCH 1/2] include/qemu/int128.h: define struct Int128 according to the host endianness, matheus . ferst, 2021/08/24
- [PATCH 2/2] target/ppc: fix vextu[bhw][lr]x helpers, matheus . ferst, 2021/08/24
- Re: [PATCH 0/2] target/ppc: Fix vextu[bhw][lr]x on big endian hosts, David Gibson, 2021/08/25
- Re: [PATCH 0/2] target/ppc: Fix vextu[bhw][lr]x on big endian hosts, Philippe Mathieu-Daudé, 2021/08/25
- Re: [PATCH 0/2] target/ppc: Fix vextu[bhw][lr]x on big endian hosts, Mark Cave-Ayland, 2021/08/25