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Kernel+LibC: Pass 64-bit integers in syscalls by value

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Now that support for 32-bit x86 has been removed, we don't have to worry
about the top half of `off_t`/`u64` values being chopped off when we try
to pass them in registers. Therefore, we no longer need the workaround
of pointers to stack-allocated values to syscalls.

Note that this changes the system call ABI, so statically linked
programs will have to be re-linked.
This commit is contained in:
Daniel Bertalan 2023-08-11 10:47:31 +02:00
commit 286984750e
Notes: sideshowbarker 2024-07-17 01:12:07 +09:00
12 changed files with 22 additions and 37 deletions
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2
Userland/Libraries/LibC/sys/uio.cpp
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@ -28,7 +28,7 @@ ssize_t pwritev(int fd, struct iovec const* iov, int iov_count, off_t offset)
{
__pthread_maybe_cancel();
int rc = syscall(SC_pwritev, fd, iov, iov_count, &offset);
int rc = syscall(SC_pwritev, fd, iov, iov_count, offset);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
}