HelenOS sources

__syscall0         42 uspace/lib/c/arch/abs32le/include/libarch/syscall.h #define __syscall0  __syscall
__syscall0         42 uspace/lib/c/arch/ia32/include/libarch/syscall.h #define __syscall0  __syscall_fast_func
__syscall0         43 uspace/lib/c/arch/riscv64/include/libarch/syscall.h #define __syscall0  __syscall
__syscall0         42 uspace/lib/c/arch/sparc64/include/libarch/syscall.h #define __syscall0	__syscall
__syscall0         49 uspace/lib/c/include/syscall.h #define __syscall0  __syscall
__syscall0         49 uspace/lib/posix/include/libc/syscall.h #define __syscall0  __syscall