From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/unix/mips/brk.S | 67 +++++++++++++++++++++++++++++++++++++++++++ sysdeps/unix/mips/fork.S | 29 +++++++++++++++++++ sysdeps/unix/mips/pipe.S | 31 ++++++++++++++++++++ sysdeps/unix/mips/sigreturn.S | 29 +++++++++++++++++++ sysdeps/unix/mips/sysdep.S | 41 ++++++++++++++++++++++++++ sysdeps/unix/mips/sysdep.h | 52 +++++++++++++++++++++++++++++++++ sysdeps/unix/mips/wait.S | 44 ++++++++++++++++++++++++++++ 7 files changed, 293 insertions(+) create mode 100644 sysdeps/unix/mips/brk.S create mode 100644 sysdeps/unix/mips/fork.S create mode 100644 sysdeps/unix/mips/pipe.S create mode 100644 sysdeps/unix/mips/sigreturn.S create mode 100644 sysdeps/unix/mips/sysdep.S create mode 100644 sysdeps/unix/mips/sysdep.h create mode 100644 sysdeps/unix/mips/wait.S (limited to 'sysdeps/unix/mips') diff --git a/sysdeps/unix/mips/brk.S b/sysdeps/unix/mips/brk.S new file mode 100644 index 0000000000..1754c0c4de --- /dev/null +++ b/sysdeps/unix/mips/brk.S @@ -0,0 +1,67 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +#ifndef SYS_brk +#define SYS_brk 17 +#endif + +#ifndef HAVE_GNU_LD +#define __end end +#endif + +.data +.sdata +ENTRY(__curbrk) + .word __end + +.text +.set noreorder +.set noat + +ENTRY(__brk) + /* Minimum is one page. */ + lui v0, 4096 + lw v0, __end + nop + + /* If they ask for less than a page, givvem the whole + thing anyway. */ + sltu AT, a0, v0 + beq AT, zero, down1 + nop + move a0, v0 +down1: + li v0, SYS_brk + syscall + bne a3, zero, error + + /* Update __curbrk and exit cleanly. */ + lui AT, 4096 + sw a0, __curbrk + j ra + move v0, zero + + /* What a horrible way to die. */ +error: j syscall_error + nop + nop + nop + +weak_alias (__brk, brk) diff --git a/sysdeps/unix/mips/fork.S b/sysdeps/unix/mips/fork.S new file mode 100644 index 0000000000..2347bf4d50 --- /dev/null +++ b/sysdeps/unix/mips/fork.S @@ -0,0 +1,29 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +SYSCALL__ (fork, 0) + beq v1, zero, parent /* Branch if parent. */ + nop + /* We are the child. Return zero. */ + move v0, zero +parent: + ret + +weak_alias (__fork, fork) diff --git a/sysdeps/unix/mips/pipe.S b/sysdeps/unix/mips/pipe.S new file mode 100644 index 0000000000..f8ce56b118 --- /dev/null +++ b/sysdeps/unix/mips/pipe.S @@ -0,0 +1,31 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +SYSCALL__ (pipe, 1) + /* Plop in the two descriptors. */ + sw v0, 0(a0) + sw v1, 4(a0) + + /* Go out with a clean status. */ + j ra + move v0, zero + nop + +weak_alias (__pipe, pipe) diff --git a/sysdeps/unix/mips/sigreturn.S b/sysdeps/unix/mips/sigreturn.S new file mode 100644 index 0000000000..1e76bf5f99 --- /dev/null +++ b/sysdeps/unix/mips/sigreturn.S @@ -0,0 +1,29 @@ +/* Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +#ifndef SYS_sigreturn +#define SYS_sigreturn 103 +#endif + +ENTRY(__sigreturn) + li v0, SYS_sigreturn + syscall + +weak_alias (__sigreturn, sigreturn) diff --git a/sysdeps/unix/mips/sysdep.S b/sysdeps/unix/mips/sysdep.S new file mode 100644 index 0000000000..21bdf234f9 --- /dev/null +++ b/sysdeps/unix/mips/sysdep.S @@ -0,0 +1,41 @@ +/* Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#define _ERRNO_H +#include + +/* .globl errno */ +.set noreorder + +ENTRY(syscall_error) +#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN + /* We translate the system's EWOULDBLOCK error into EAGAIN. + The GNU C library always defines EWOULDBLOCK==EAGAIN. + EWOULDBLOCK_sys is the original number. */ + bne v0, EWOULDBLOCK_sys, skip + nop + li v0, EAGAIN +skip: +#endif + /* Store it in errno... */ + sw v0, errno + + /* And just kick back a -1. */ + j ra + li v0, -1 diff --git a/sysdeps/unix/mips/sysdep.h b/sysdeps/unix/mips/sysdep.h new file mode 100644 index 0000000000..c09c5af7d2 --- /dev/null +++ b/sysdeps/unix/mips/sysdep.h @@ -0,0 +1,52 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +#ifdef ASSEMBLER + +#include + +#define ENTRY(name) \ + .globl name; \ + .align 2; \ + .ent name,0; \ + name##: + +/* Note that while it's better structurally, going back to call syscall_error + can make things confusing if you're debugging---it looks like it's jumping + backwards into the previous fn. */ +#define PSEUDO(name, syscall_name, args) \ + .set noreorder; \ + .align 2; \ + 99: j syscall_error; \ + nop; \ + ENTRY(name) \ + li v0, SYS_##syscall_name; \ + syscall; \ + bne a3, zero, 99b; \ + nop; \ +syse1: + +#define ret j ra ; nop +#define r0 v0 +#define r1 v1 +/* The mips move insn is d,s. */ +#define MOVE(x,y) move y , x + +#endif diff --git a/sysdeps/unix/mips/wait.S b/sysdeps/unix/mips/wait.S new file mode 100644 index 0000000000..63bce849d4 --- /dev/null +++ b/sysdeps/unix/mips/wait.S @@ -0,0 +1,44 @@ +/* Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +.set noreorder + +ENTRY(__wait) + /* Prep it for wait. */ + move a1, zero + move a2, zero + + li v0, SYS_wait + syscall + beq a3, zero, noerror + nop + j syscall_error + nop + +noerror: + /* If the arg is not NULL, store v1 there. */ + beq a0, zero, noarg + nop + sw v1, 0(a0) + nop +noarg: + ret + +weak_alias (__wait, wait) -- cgit v1.2.3