#include "linux-syscall.h"

#if __thumb__
# define FUNC(name) .type name, %function; .thumb_func; name:
# define SET .thumb_set
#else
# define FUNC(name) .type name, %function; name:
# define SET .set
#endif

#define GLOBAL(name) .global name; FUNC(name)
#define SIZE(name) .size name, .-name

#if __thumb__

# define SYSCALL0(name) \
GLOBAL(_ ## name); \
mov r12, r7; \
mov r7, #SYS_ ## name; \
swi; \
mov r7, r12; \
b _set_errno; \
SIZE(_ ## name)

/* static int _syscall3(int a, int b, int c, int number); */
FUNC(_syscall3)
push { r7 }
mov r7, r3
swi
pop { r7 }
b _set_errno
SIZE(_syscall3)

# define SYSCALL3(name) \
GLOBAL(_ ## name); \
mov r3, #SYS_ ## name; \
b _syscall3; \
SIZE(_ ## name)

# define SYSCALL6(name) \
GLOBAL(_ ## name); \
push { r4 - r5, r7 }; \
ldr r4, [sp, #12]; \
ldr r5, [sp, #16]; \
mov r7, #SYS_ ## name; \
swi; \
pop { r4 - r5, r7 }; \
b _set_errno; \
SIZE(_ ## name)

# define SYSCALL4(name) SYSCALL6(name)

#else /* __thumb__ */

# define SYSCALL4(name) \
GLOBAL(_ ## name); \
swi #SYS_ ## name; \
b _set_errno; \
SIZE(_ ## name)

# define SYSCALL6(name) \
GLOBAL(_ ## name); \
push { r4 - r5 }; \
ldr r4, [sp, #8]; \
ldr r5, [sp, #12]; \
swi #SYS_ ## name; \
pop { r4 - r5 }; \
b _set_errno; \
SIZE(_ ## name)

#define SYSCALL0(name) SYSCALL3(name)
#define SYSCALL3(name) SYSCALL4(name)

#endif /* __thumb__ */

#define SYSCALL1(name) SYSCALL3(name)
#define SYSCALL2(name) SYSCALL3(name)
#define SYSCALL5(name) SYSCALL6(name)

SYSCALL1(alarm)
SYSCALL1(brk)
SYSCALL1(chdir)
SYSCALL2(chmod)
SYSCALL3(chown)
SYSCALL1(close)
SYSCALL1(dup)
SYSCALL2(dup2)
SYSCALL3(execve)
SYSCALL1(exit)
SYSCALL3(fcntl)
SYSCALL2(fstat)
SYSCALL2(ftruncate)
SYSCALL3(getdents)
SYSCALL0(getegid)
SYSCALL0(geteuid)
SYSCALL0(getgid)
SYSCALL2(getgroups)
SYSCALL1(getpgid)
SYSCALL0(getpgrp)
SYSCALL0(getpid)
SYSCALL0(getuid)
SYSCALL2(gettimeofday)
SYSCALL3(ioctl)
SYSCALL2(kill)
SYSCALL3(lchown)
SYSCALL2(link)
SYSCALL3(lseek)
SYSCALL2(lstat)
SYSCALL2(mkdir)
SYSCALL3(mknod)
SYSCALL2(nanosleep)
SYSCALL3(open)
SYSCALL0(pause)
SYSCALL1(pipe)
SYSCALL3(read)
SYSCALL3(readlink)
SYSCALL4(reboot)
SYSCALL1(rmdir)
SYSCALL5(select)
SYSCALL2(setpgid)
SYSCALL1(setgid)
SYSCALL0(setsid)
SYSCALL1(setuid)
SYSCALL3(sigprocmask)
SYSCALL2(socketcall)
SYSCALL2(stat)
SYSCALL1(stime)
SYSCALL2(symlink)
SYSCALL1(sync)
SYSCALL1(sysinfo)
SYSCALL1(times)
SYSCALL2(truncate)
SYSCALL1(umask)
SYSCALL1(uname)
SYSCALL1(unlink)
SYSCALL2(utime)
SYSCALL0(vfork)
SYSCALL4(wait4)
SYSCALL3(write)