mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-01 11:52:47 +00:00
27 lines
828 B
ArmAsm
27 lines
828 B
ArmAsm
|
/* reentrant system call template */
|
||
|
|
|
||
|
|
/* Lots of system calls are trivial functions, so we build their source files
|
||
|
|
from a template. New syscalls can be added simply by editing the
|
||
|
|
Makefile!
|
||
|
|
|
||
|
|
The system calls aren't necessarily reentrant. If we were being used in
|
||
|
|
an embedded system they could be. Reentrant syscalls are also used,
|
||
|
|
however, to provide ANSI C namespace clean access to the host o/s.
|
||
|
|
|
||
|
|
Usage: Compile this file with "func" set to the name of the syscall. */
|
||
|
|
|
||
|
|
#include "sys/syscallasm.h"
|
||
|
|
|
||
|
|
#define concat(a,b) a##b
|
||
|
|
#define concat3(a,b,c) a##b##c
|
||
|
|
#define makesys(a) concat (SYS_, a)
|
||
|
|
#define make_r_fn(a) concat3 (_, a, _r)
|
||
|
|
|
||
|
|
/* The leading _'s get turned into #'s by the Makefile. */
|
||
|
|
|
||
|
|
_ifdef REENT
|
||
|
|
defsyscall_r (make_r_fn (func), makesys (func))
|
||
|
|
_else
|
||
|
|
defsyscall (func, makesys (func))
|
||
|
|
_endif
|