The function do_sigreturn() tries to store the PC, NPC and PSR in uint32_t local variables, which implicitly drops the high half of these fields for 64-bit guests. The usual effect was that a guest which used signals would crash on return from a signal unless it was lucky enough to take it while the PC was in the low 4GB of the address space. In particular, Debian /bin/dash and /bin/bash would segfault after executing external commands. Use abi_ulong, which is the type these fields all have in the __siginfo_t struct. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20201105212314.9628-4-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu> |
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cpu_loop.c | ||
meson.build | ||
signal.c | ||
sockbits.h | ||
syscall.tbl | ||
syscallhdr.sh | ||
target_cpu.h | ||
target_elf.h | ||
target_errno.h | ||
target_fcntl.h | ||
target_signal.h | ||
target_structs.h | ||
target_syscall.h | ||
termbits.h |