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