syscall overhaul part two - unify public and internal syscall interface

with this patch, the syscallN() functions are no longer needed; a
variadic syscall() macro allows syscalls with anywhere from 0 to 6
arguments to be made with a single macro name. also, manually casting
each non-integer argument with (long) is no longer necessary; the
casts are hidden in the macros.

some source files which depended on being able to define the old macro
SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall()
instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL
have also been changed.

x86_64 has not been tested, and may need a follow-up commit to fix any
minor bugs/oversights.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/thread/__lock.c b/src/thread/__lock.c
index 557c6a62..21cb71a8 100644
--- a/src/thread/__lock.c
+++ b/src/thread/__lock.c
@@ -1,4 +1,3 @@
-#define SYSCALL_RETURN_ERRNO
 #include "pthread_impl.h"
 
 void __lock(volatile int *l)
@@ -8,5 +7,5 @@ void __lock(volatile int *l)
 	 * assignment to optimize non-pathological code with no contention. */
 	while (a_xchg(l, 1))
 		if (spins) spins--, a_spin();
-		else syscall0(__NR_sched_yield);
+		else __syscall(__NR_sched_yield);
 }