initial import

7 files changed, 293 insertions, 0 deletions

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 <sysdep.h>
+
+#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 <sysdep.h>
+
+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 <sysdep.h>
+
+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 <sysdep.h>
+
+#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 <sysdep.h>
+#define _ERRNO_H
+#include <errnos.h>
+
+/* .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 <sysdeps/unix/sysdep.h>
+
+#ifdef ASSEMBLER
+
+#include <regdef.h>
+
+#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 <sysdep.h>
+
+.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)