Subversion Repositories openrisc_2011-10-31

/* mon960 syscall.h file.  This is used only by the simulator.  This matches

   the syscall numbers used by mon-syscalls.S, but is otherwise a copy of

   the libgloss/syscall.h file.  */

/* ??? This file should be used by mon-syscalls.S to avoid maintenance

   problems.  */

#ifndef LIBGLOSS_SYSCALL_H

#define LIBGLOSS_SYSCALL_H

/* Note: This file may be included by assembler source.  */

/* These should be as small as possible to allow a port to use a trap type

   instruction, which the system call # as the trap (the d10v for instance

   supports traps 0..31).  An alternative would be to define one trap for doing

   system calls, and put the system call number in a register that is not used

   for the normal calling sequence (so that you don't have to shift down the

   arguments to add the system call number).  Obviously, if these system call

   numbers are ever changed, all of the simulators and potentially user code

   will need to be updated.  */

/* There is no current need for the following: SYS_execv, SYS_creat, SYS_wait,

   etc. etc.  Don't add them.  */

/* These are required by the ANSI C part of newlib (excluding system() of

   course).  */

#define SYS_exit        257

#define SYS_open        230

#define SYS_close       234

#define SYS_read        231

#define SYS_write       232

#define SYS_lseek       233

/* ??? The following system calls apparently aren't support by mon960.  */

#define SYS_unlink      7

#define SYS_getpid      8

#define SYS_kill        9

#define SYS_fstat       10

/*#define SYS_sbrk      11 - not currently a system call, but reserved.  */

/* ARGV support.  */

#define SYS_argvlen     12

#define SYS_argv        13

/* These are extras added for one reason or another.  */

#define SYS_chdir       14

#define SYS_stat        15

#define SYS_chmod       16

#define SYS_utime       17

#define SYS_time        18

#endif