From: Riku Voipio <riku.voi...@linaro.org> With nptl enabled, atomic_cmpxchg_32 and atomic_barrier system calls are needed. This patch enabled really dummy versions of the system calls, modeled after the m68k kernel code.
With this patch I am able to execute m68k binaries with qemu linux-user (busybox compiled for coldfire). Cc: Laurent Vivier <laur...@vivier.eu> Signed-off-by: Riku Voipio <riku.voi...@linaro.org> --- linux-user/strace.list | 6 ++++++ linux-user/syscall.c | 20 ++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/linux-user/strace.list b/linux-user/strace.list index 08f115d..4377365 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -1524,3 +1524,9 @@ #ifdef TARGET_NR_pipe2 { TARGET_NR_pipe2, "pipe2", NULL, NULL, NULL }, #endif +#ifdef TARGET_NR_atomic_cmpxchg_32 +{ TARGET_NR_atomic_cmpxchg_32, "atomic_cmpxchg_32", NULL, NULL, NULL }, +#endif +#ifdef TARGET_NR_atomic_barrier +{ TARGET_NR_atomic_barrier, "atomic_barrier", NULL, NULL, NULL }, +#endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 3f6db4b..a98cec5 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -8990,6 +8990,26 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; } #endif +#ifdef TARGET_NR_atomic_cmpxchg_32 + case TARGET_NR_atomic_cmpxchg_32: + { + /* should use start_exclusive from main.c */ + abi_ulong mem_value; + if (get_user_u32(mem_value, arg6)) + ret = -TARGET_EFAULT; + if (mem_value == arg2) + put_user_u32(arg1, arg6); + ret = mem_value; + break; + } +#endif +#ifdef TARGET_NR_atomic_barrier + case TARGET_NR_atomic_barrier: + { + /* Like the kernel implementation and the qemu arm barrier, no-op this? */ + break; + } +#endif default: unimplemented: gemu_log("qemu: Unsupported syscall: %d\n", num); -- 1.8.1.2