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/cap.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'common/uapi/cap.c') diff --git a/common/uapi/cap.c b/common/uapi/cap.c index 825022a..157ef47 100644 --- a/common/uapi/cap.c +++ b/common/uapi/cap.c @@ -42,14 +42,14 @@ SYSCALL_DEFINE3(set_cap)(struct tcb *t, sys_arg_t tid, sys_arg_t off, sys_arg_t caps) { if (!is_set(t->caps, CAP_CAPS)) - return_args(t, SYS_RET1(ERR_PERM)); + return_args1(t, ERR_PERM); capflags_t *c; if (!(c = __get_tcb_caps(tid, off))) - return_args(t, SYS_RET1(ERR_INVAL)); + return_args1(t, ERR_INVAL); set_caps(*c, off, caps); - return_args(t, SYS_RET1(OK)); + return_args1(t, OK); } /** @@ -64,9 +64,9 @@ SYSCALL_DEFINE2(get_cap)(struct tcb *t, sys_arg_t tid, sys_arg_t off) { capflags_t *c; if (!(c = __get_tcb_caps(tid, off))) - return_args(t, SYS_RET1(ERR_INVAL)); + return_args1(t, ERR_INVAL); - return_args(t, SYS_RET2(OK, get_caps(*c, off))); + return_args2(t, OK, get_caps(*c, off)); } /** @@ -83,12 +83,12 @@ SYSCALL_DEFINE3(clear_cap)(struct tcb *t, sys_arg_t tid, sys_arg_t off, sys_arg_t caps) { if (!is_set(t->caps, CAP_CAPS)) - return_args(t, SYS_RET1(ERR_PERM)); + return_args1(t, ERR_PERM); capflags_t *c; if (!(c = __get_tcb_caps(tid, off))) - return_args(t, SYS_RET1(ERR_INVAL)); + return_args1(t, ERR_INVAL); clear_caps(*c, off, caps); - return_args(t, SYS_RET1(OK)); + return_args1(t, OK); } -- cgit v1.3