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syscall overhaul part two - unify public and internal syscall interface

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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.
This commit is contained in:
Rich Felker
2011-03-19 21:36:10 -04:00
parent 462dbfc207
commit 685e40bb09
26 changed files with 275 additions and 316 deletions
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3
src/thread/__wait.c
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@ -1,4 +1,3 @@
#define SYSCALL_RETURN_ERRNO
#include "pthread_impl.h"
void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
@ -11,6 +10,6 @@ void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
}
if (waiters) a_inc(waiters);
while (*addr==val)
syscall4(__NR_futex, (long)addr, FUTEX_WAIT|priv, val, 0);
__syscall(__NR_futex, (long)addr, FUTEX_WAIT|priv, val, 0);
if (waiters) a_dec(waiters);
}