qemu/linux-user/arm
Helge Deller daa3277175 linux-user/armeb: Fix __kernel_cmpxchg() for armeb
Commit 7f4f0d9ea8 ("linux-user/arm: Implement __kernel_cmpxchg with host
atomics") switched to use qatomic_cmpxchg() to swap a word with the memory
content, but missed to endianess-swap the oldval and newval values when
emulating an armeb CPU, which expects words to be stored in big endian in
the guest memory.

The bug can be verified with qemu >= v7.0 on any little-endian host, when
starting the armeb binary of the upx program, which just hangs without
this patch.

Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>
Reported-by: "Markus F.X.J. Oberhumer" <markus@oberhumer.com>
Reported-by: John Reiser <jreiser@BitWagon.com>
Closes: https://github.com/upx/upx/issues/687
Message-Id: <ZMQVnqY+F+5sTNFd@p100>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 38dd78c41e)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2023-08-01 09:05:03 +03:00
..
nwfpe Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
cpu_loop.c linux-user/armeb: Fix __kernel_cmpxchg() for armeb 2023-08-01 09:05:03 +03:00
meson.build semihosting: Move ARM semihosting code to shared directories 2021-01-18 10:05:06 +00:00
signal.c linux-user: Rename TARGET_QEMU_ESIGRETURN to QEMU_ESIGRETURN 2021-12-19 20:47:33 -08:00
sockbits.h linux-user: move socket.h generic definitions to generic/sockbits.h 2018-05-25 10:10:55 +02:00
syscall.tbl linux-user: update syscall.tbl to Linux v5.13 2021-07-13 13:59:59 +02:00
syscallhdr.sh linux-user, arm: add syscall table generation support 2020-03-20 16:02:00 +01:00
target_cpu.h linux-user/arm: Mark the commpage executable 2022-09-06 07:32:35 +01:00
target_elf.h linux-user: Move CPU type name selection to a function 2018-02-25 17:27:41 +01:00
target_errno_defs.h linux-user: Extract target errno to 'target_errno_defs.h' 2021-07-12 21:53:35 +02:00
target_fcntl.h linux-user: move arm/aarch64/m68k fcntl definitions to [arm|aarch64|m68k]/target_fcntl.h 2018-06-04 01:30:44 +02:00
target_mman.h linux-user: Provide MADV_* definitions 2022-09-27 09:30:09 +02:00
target_prctl.h linux-user: Split out do_prctl and subroutines 2022-01-06 11:40:52 +01:00
target_resource.h linux-user: Move generic TARGET_RLIMIT* definitions to generic/target_resource.h 2022-02-01 08:01:38 +01:00
target_signal.h linux-user: Move target_signal.h generic definitions to generic/signal.h 2022-01-06 11:40:52 +01:00
target_structs.h linux-user: Move target_struct.h generic definitions to generic/ 2022-01-11 18:40:44 +01:00
target_syscall.h Replace TARGET_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
termbits.h linux-user: Add generic 'termbits.h' for some archs 2020-08-27 12:29:50 +02:00