pread64 and pwrite64 pass 64bit parameters which for some architectures need
to be aligned to special argument pairs, creating a gap argument.
Handle this special case the same way we handle it in other places of the code.
Reported-by: Alex Barcelo <abarc...@ac.upc.edu>
Signed-off-by: Alexander Graf <ag...@suse.de>
---
linux-user/syscall.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 8cd56f2..7992b1b 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7423,12 +7423,20 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
#endif
#ifdef TARGET_NR_pread64
case TARGET_NR_pread64:
+ if (regpairs_aligned(cpu_env)) {
+ arg4 = arg5;
+ arg5 = arg6;
+ }
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
goto efault;
ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
unlock_user(p, arg2, ret);
break;
case TARGET_NR_pwrite64:
+ if (regpairs_aligned(cpu_env)) {
+ arg4 = arg5;
+ arg5 = arg6;
+ }
if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
goto efault;
ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
--
1.6.0.2
