qemu/target
Peter Maydell 3448d47b31 translate.c: Fix usermode big-endian AArch32 LDREXD and STREXD
For AArch32 LDREXD and STREXD, architecturally the 32-bit word at the
lowest address is always Rt and the one at addr+4 is Rt2, even if the
CPU is big-endian. Our implementation does these with a single
64-bit store, so if we're big-endian then we need to put the two
32-bit halves together in the opposite order to little-endian,
so that they end up in the right places. We were trying to do
this with the gen_aa32_frob64() function, but that is not correct
for the usermode emulator, because there there is a distinction
between "load a 64 bit value" (which does a BE 64-bit access
and doesn't need swapping) and "load two 32 bit values as one
64 bit access" (where we still need to do the swapping, like
system mode BE32).

Fixes: https://bugs.launchpad.net/qemu/+bug/1725267
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1509622400-13351-1-git-send-email-peter.maydell@linaro.org
2017-11-07 13:03:51 +00:00
..
alpha x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
arm translate.c: Fix usermode big-endian AArch32 LDREXD and STREXD 2017-11-07 13:03:51 +00:00
cris x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
hppa Capstone disassembler 2017-10-27 08:04:51 +01:00
i386 Capstone disassembler 2017-10-27 08:04:51 +01:00
lm32 x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
m68k x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
microblaze Capstone disassembler 2017-10-27 08:04:51 +01:00
mips x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
moxie moxie: cleanup cpu type name composition 2017-10-27 16:03:54 +02:00
nios2 Capstone disassembler 2017-10-27 08:04:51 +01:00
openrisc x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
ppc Capstone disassembler 2017-10-27 08:04:51 +01:00
s390x s390x/kvm: use cpu model for gscb on compat machines 2017-10-30 09:03:45 +01:00
sh4 x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
sparc x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
tilegx tcg: Initialize cpu_env generically 2017-10-24 13:53:42 -07:00
tricore x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
unicore32 x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00
xtensa x86/cpu/numa queue, 2017-10-27 2017-10-30 10:11:22 +00:00