diff options
Diffstat (limited to 'mit-pthreads/machdep/syscall-r2000-ultrix-4.2.S')
| -rw-r--r-- | mit-pthreads/machdep/syscall-r2000-ultrix-4.2.S | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/mit-pthreads/machdep/syscall-r2000-ultrix-4.2.S b/mit-pthreads/machdep/syscall-r2000-ultrix-4.2.S new file mode 100644 index 00000000000..dc891dc37bd --- /dev/null +++ b/mit-pthreads/machdep/syscall-r2000-ultrix-4.2.S @@ -0,0 +1,166 @@ +/* ==== syscall.S ============================================================ + * Copyright (c) 1993 by Chris Provenzano, proven@mit.edu + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Chris Provenzano. + * 4. The name of Chris Provenzano may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Description : Machine dependent syscalls for decstation with r2000/r3000 + * + * 1.00 93/08/14 proven + * -Started coding this file. + */ + + .text + .ascii "$Id$"; + +#include <syscall.h> +#include <machine/regdef.h> + +/* + * Initial asm stuff for all functions. + */ + .text + .align 2 + +/* ========================================================================== + * error code for all syscalls. The error value is returned as the negative + * of the errno value. Eventually I want to load the errno value directly + * into pthread_run->error but until then ... + */ +machdep_error: + negu v0, v0 /* Return negative of errno value. */ + j ra + +/* ========================================================================== + * Syscalls already done, + * Standard Other important BSD sockets + * fork = 2 select = 93 socket = 97 + * read = 3 readv = 120 connect = 98 + * write = 4 writev = 121 accept = 99 + * open = 5 getdirentries = send = 101 + * close = 6 recv = 102 + * creat = 8 bind = 104 + * link = 9 listen = 106 + * unlink = 10 recvmsg = 113 + * chdir = 12 sendmsg = 114 + * chmod = 15 getsockopt = 118 + * chown = 16 recvfrom = 125 + * lseek = 19 sendto = 133 + * stat = 38 shutdown = 134 + * dup = 41 getpeername = 141 + * pipe = 42 + * execve = 59 + * fstat = 62 + * wait3 = 84 + * dup2 = 90 + * fcntl = 92 + * fchown = 123 + * fchmod = 124 + * rename = 128 + * waitpid = 189 + * ======================================================================= */ + +/* ========================================================================== + * machdep_sys_fork() + */ + .globl machdep_sys_fork + .ent machdep_sys_fork + +machdep_sys_fork: + + .frame sp,0,ra /* No frame, return address in ra */ + + li v0,SYS_fork /* Load fork syscall # into v0 */ + syscall + bne a3,zero,machdep_error /* Error if a3 != 0 */ + beqz v1,__fork_parent /* Second return value = 0, if parent */ + li v0,0 +__fork_parent: + j ra + + .end machdep_sys_fork + +/* ========================================================================== + * machdep_sys_pipe() + */ + .globl machdep_sys_pipe + .ent machdep_sys_pipe + +machdep_sys_pipe: + + .frame sp,0,ra /* No frame, return address in ra */ + + li v0,SYS_pipe /* Load pipe syscall # into v0 */ + syscall + bne a3,zero,machdep_error /* Error if a3 != 0 */ + sw v0, 0(a0) + sw v1, 4(a0) + li v0, 0 + j ra + + .end machdep_sys_pipe + +/* ========================================================================== + * Other important asm routines. + * ======================================================================= */ +/* ========================================================================== + * fake_setjmp() + */ + .globl fake_setjmp + .ent fake_setjmp + +fake_setjmp: + + .frame sp,0,ra /* No frame, return address in ra */ + + /* Save all the important registers */ + sw ra,8(a0) + sw gp,124(a0) + sw sp,128(a0) + sw s0,76(a0) + /* More registers needed. */ + j ra + + .end fake_longjmp + +/* ========================================================================== + * machdep_sys_longjmp() + */ + .globl machdep_sys_longjmp + .ent machdep_sys_longjmp + +machdep_sys_longjmp: + + .frame sp,0,ra /* No frame, return address in ra */ + li a1,1 /* Load 1 into reg a1 */ + sw a1, 20(a0); /* Load a1 into address a0 + 20 */ + li v0,SYS_sigreturn /* Load sigreturn syscall # into v0 */ + syscall /* Do syscall to do longjmp */ + j ra + + .end machdep_sys_longjmp |