From 3212707a9ab549119ad0ad6441a07fe774c99f3b Mon Sep 17 00:00:00 2001 From: Kimplul Date: Thu, 27 Jul 2023 20:29:28 +0300 Subject: use nifty variable argument count trick + Found it in newlib. This allows the compiler to more effectively optimize away unnecessary register operations. Applied to both kernel and init.c for a slight speed increase. I really should move init.c to some other repository though, the binary files are starting to get annoying --- common/uapi/timers.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) (limited to 'common/uapi/timers.c') diff --git a/common/uapi/timers.c b/common/uapi/timers.c index 0d0ac50..b119fcc 100644 --- a/common/uapi/timers.c +++ b/common/uapi/timers.c @@ -43,9 +43,9 @@ SYSCALL_DEFINE0(timebase)(struct tcb *t) { ticks_t tm = secs_to_ticks(1); #if defined(_LP64) - return_args(t, SYS_RET2(OK, tm)); + return_args2(t, OK, tm); #else - return_args(t, SYS_RET3(OK, tm >> 32, tm)); + return_args3(t, OK, tm >> 32, tm); #endif } @@ -64,9 +64,9 @@ SYSCALL_DEFINE0(ticks)(struct tcb *t) { ticks_t tm = current_ticks(); #if defined(_LP64) - return_args(t, SYS_RET2(OK, tm)); + return_args2(t, OK, tm); #else - return_args(t, SYS_RET3(OK, tm >> 32, tm)); + return_args3(t, OK, tm >> 32, tm); #endif } @@ -84,9 +84,7 @@ SYSCALL_DEFINE0(ticks)(struct tcb *t) */ SYSCALL_DEFINE2(req_rel_timer)(struct tcb *t, sys_arg_t ticks, sys_arg_t mult) { - return_args(t, - SYS_RET2(OK, - new_rel_timer(t->tid, scaled_ticks(ticks, mult)))); + return_args2(t, OK, new_rel_timer(t->tid, scaled_ticks(ticks, mult))); } /** @@ -100,9 +98,7 @@ SYSCALL_DEFINE2(req_rel_timer)(struct tcb *t, sys_arg_t ticks, sys_arg_t mult) */ SYSCALL_DEFINE2(req_abs_timer)(struct tcb *t, sys_arg_t ticks, sys_arg_t mult) { - return_args(t, - SYS_RET2(OK, - new_abs_timer(t->tid, scaled_ticks(ticks, mult)))); + return_args2(t, OK, new_abs_timer(t->tid, scaled_ticks(ticks, mult))); } /** @@ -117,8 +113,8 @@ SYSCALL_DEFINE1(free_timer)(struct tcb *t, sys_arg_t cid) { struct timer *timer = find_timer(cid); if (!timer) - return_args(t, SYS_RET1(ERR_NF)); + return_args1(t, ERR_NF); remove_timer(timer); - return_args(t, SYS_RET1(OK)); + return_args1(t, OK); } -- cgit v1.3