initial import

7 files changed, 429 insertions, 0 deletions

diff --git a/sysdeps/unix/sparc/brk.S b/sysdeps/unix/sparc/brk.S
new file mode 100644
index 0000000000..7906695890
--- /dev/null
+++ b/sysdeps/unix/sparc/brk.S
@@ -0,0 +1,55 @@
+/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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 C_SYMBOL_NAME
+#define	C_SYMBOL_NAME(name)	_##name
+#endif
+
+.data
+.global C_SYMBOL_NAME(__curbrk)
+C_LABEL(__curbrk)
+#ifdef	HAVE_GNU_LD
+	.long C_SYMBOL_NAME(_end)
+#else
+	.long C_SYMBOL_NAME(end)
+#endif
+
+.text
+ENTRY (__brk)
+	add %o0, 7, %o0
+	andn %o0, 7, %o0
+	mov SYS_brk, %g1
+	mov %o0, %o1		/* Save rounded value.  */
+	ta %g0
+	bcs error
+	sethi %hi(C_SYMBOL_NAME(__curbrk)), %g1
+	st %o1, [%g1 + %lo(C_SYMBOL_NAME(__curbrk))]
+	ret
+error:	sethi %hi(C_SYMBOL_NAME(errno)), %g1
+	st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
+	sub %g0, 1, %o0
+	retl
+	nop			/* Fill the delay slot.  */
+
+weak_alias (__brk, brk)
diff --git a/sysdeps/unix/sparc/fork.S b/sysdeps/unix/sparc/fork.S
new file mode 100644
index 0000000000..dee15ad701
--- /dev/null
+++ b/sysdeps/unix/sparc/fork.S
@@ -0,0 +1,30 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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)
+	/* %o1 is now 0 for the parent and 1 for the child.  Decrement it to
+	   make it -1 (all bits set) for the parent, and 0 (no bits set)
+	   for the child.  Then AND it with %o0, so the parent gets
+	   %o0&-1==0, and the child gets %o0&0==0.  */
+	sub %o1, 1, %o1
+	retl
+	and %o0, %o1, %o0
+
+weak_alias (__fork, fork)
diff --git a/sysdeps/unix/sparc/pipe.S b/sysdeps/unix/sparc/pipe.S
new file mode 100644
index 0000000000..3929413783
--- /dev/null
+++ b/sysdeps/unix/sparc/pipe.S
@@ -0,0 +1,29 @@
+/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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>
+
+ENTRY (__pipe)
+	mov %o0, %o2		/* Save PIPEDES. */
+PSEUDO (__Spipe, pipe, 1)
+	st %o0, [%o2]		/* PIPEDES[0] = %o0; */
+	st %o1, [%o2 + 4]	/* PIPEDES[1] = %o1; */
+	retl			/* return 0; */
+	clr %o0
+
+weak_alias (__pipe, pipe)
diff --git a/sysdeps/unix/sparc/start.c b/sysdeps/unix/sparc/start.c
new file mode 100644
index 0000000000..e0f39f5b73
--- /dev/null
+++ b/sysdeps/unix/sparc/start.c
@@ -0,0 +1,184 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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 <ansidecl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#ifndef NO_SHLIB
+#include <sys/exec.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <link.h>
+#include <syscall.h>
+#endif
+
+#if !defined (__GNUC__) || __GNUC__ < 2
+  #error This file uses GNU C extensions; you must compile with GCC version 2.
+#endif
+
+/* The first piece of initialized data.  */
+int __data_start = 0;
+#ifdef HAVE_WEAK_SYMBOLS
+weak_alias (__data_start, data_start)
+#endif
+
+VOLATILE int errno;
+
+#ifdef	HAVE_WEAK_SYMBOLS
+weak_alias (__environ, environ)
+#else
+#undef	environ
+#define	__environ	environ
+#endif
+
+char **__environ;
+
+extern void EXFUN(__libc_init, (int argc, char **argv, char **envp));
+extern int EXFUN(main, (int argc, char **argv, char **envp));
+
+register long int sp asm("%sp"), fp asm("%fp");
+
+#ifndef NO_SHLIB
+static void EXFUN(init_shlib, (NOARGS));
+#endif
+
+#ifndef NO_EXPLICIT_START
+/* Declare _start with an explicit assembly symbol name of `start'
+   (note no leading underscore).  This is the name Sun's crt0.o uses,
+   and programs are often linked with `ld -e start'.  */
+void _start (void) asm ("start");
+#endif
+
+void
+_start (void)
+{
+  /* It is important that these be declared `register'.
+     Otherwise, when compiled without optimization, they are put on the
+     stack, which loses completely after we zero the FP.  */
+  register int argc;
+  register char **argv, **envp;
+
+  /* Unwind the frame built when we entered the function.  */
+  asm("restore");
+
+  /* And clear the frame pointer.  */
+  fp = 0;
+
+  /* The argument info starts after one register
+     window (64 bytes) past the SP.  */
+  argc = ((int *) sp)[16];
+  argv = (char **) &((int *) sp)[17];
+  envp = &argv[argc + 1];
+  __environ = envp;
+
+#ifndef NO_SHLIB
+  init_shlib ();
+#endif
+
+  /* Allocate 24 bytes of stack space for the register save area.  */
+  sp -= 24;
+  __libc_init (argc, argv, envp);
+
+  exit (main (argc, argv, envp));
+}
+
+#ifndef NO_SHLIB
+
+/* System calls for use by the bootstrap routine.
+   These are defined here since the usual calls may be dynamically linked.  */
+
+int syscall (int sysno, ...) asm ("init_syscall");
+asm ("init_syscall:\n"
+     "	clr %g1\n"
+     "	ta 0\n"
+     "	bcc 1f\n"
+     "	sethi %hi(_errno), %g1\n"
+     "	st %o0, [%g1 + %lo(_errno)]\n"
+     "	sub %g0, 1, %o0\n"
+     "1:retl\n"
+     "	nop");
+
+static void
+DEFUN_VOID(init_shlib)
+{
+  extern struct link_dynamic _DYNAMIC;
+  int so, zf;
+  caddr_t somap;
+  caddr_t sodmap;
+  caddr_t sobssmap;
+  void (*ldstart) (int, int);
+  struct exec soexec;
+  struct 
+    {
+      caddr_t crt_ba;
+      int crt_dzfd;
+      int crt_ldfd;
+      struct link_dynamic *crt_dp;
+      char **crt_ep;
+      caddr_t crt_bp;
+    } soarg;
+  
+  /* If not dynamically linked, do nothing.  */
+  if (&_DYNAMIC == 0)
+    return;
+
+  /* Map in the dynamic linker.  */
+  so = syscall (SYS_open, "/usr/lib/ld.so", O_RDONLY);
+  if (syscall (SYS_read, so, &soexec, sizeof (soexec)) != sizeof (soexec)
+      || soexec.a_magic != ZMAGIC)
+    {
+      static CONST char emsg[] = "crt0: no /usr/lib/ld.so\n";
+      
+      syscall (SYS_write, 2, emsg, sizeof (emsg) - 1);
+      syscall (SYS_exit, 127);
+    }
+  somap = (caddr_t) syscall (SYS_mmap, 0,
+			     soexec.a_text + soexec.a_data + soexec.a_bss,
+			     PROT_READ | PROT_EXEC, _MAP_NEW | MAP_PRIVATE,
+			     so, 0);
+  sodmap = (caddr_t) syscall (SYS_mmap, somap + soexec.a_text, soexec.a_data,
+			      PROT_READ | PROT_WRITE | PROT_EXEC,
+			      _MAP_NEW | MAP_FIXED | MAP_PRIVATE,
+			      so, soexec.a_text);
+  zf = syscall (SYS_open, "/dev/zero", O_RDONLY);
+  if (soexec.a_bss != 0)
+    sobssmap = (caddr_t) syscall (SYS_mmap,
+				  somap + soexec.a_text + soexec.a_data,
+				  soexec.a_bss,
+				  PROT_READ | PROT_WRITE | PROT_EXEC,
+				  _MAP_NEW | MAP_FIXED | MAP_PRIVATE,
+				  zf, 0);
+
+  /* Call the entry point of the dynamic linker.  */
+  soarg.crt_ba = somap;
+  soarg.crt_dzfd = zf;
+  soarg.crt_ldfd = so;
+  soarg.crt_dp = &_DYNAMIC;
+  soarg.crt_ep = __environ;
+  soarg.crt_bp = (caddr_t) &&retaddr;
+  
+  ldstart = (__typeof (ldstart)) (somap + soexec.a_entry);
+  (*ldstart) (1, (char *) &soarg - (char *) sp);
+
+ retaddr:
+}
+
+#endif
diff --git a/sysdeps/unix/sparc/sysdep.S b/sysdeps/unix/sparc/sysdep.S
new file mode 100644
index 0000000000..d04a778794
--- /dev/null
+++ b/sysdeps/unix/sparc/sysdep.S
@@ -0,0 +1,47 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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>
+
+.global C_SYMBOL_NAME(errno)
+.global syscall_error
+
+.text
+.align 2
+#undef syscall_error
+#ifdef NO_UNDERSCORES
+__syscall_error:
+#else
+syscall_error:
+#endif
+#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.  */
+	cmp %o0, EWOULDBLOCK_sys
+	be,a notblock
+	mov EAGAIN, %o0
+#endif
+notblock: /* Store the error code in `errno'.  */
+	sethi %hi(C_SYMBOL_NAME(errno)), %g1
+	st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
+	/* And return -1.  */
+	retl
+	mov -1, %o0
diff --git a/sysdeps/unix/sparc/sysdep.h b/sysdeps/unix/sparc/sysdep.h
new file mode 100644
index 0000000000..eab661c1ab
--- /dev/null
+++ b/sysdeps/unix/sparc/sysdep.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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
+
+#ifdef	NO_UNDERSCORES
+/* Since C identifiers are not normally prefixed with an underscore
+   on this system, the asm identifier `syscall_error' intrudes on the
+   C name space.  Make sure we use an innocuous name.  */
+#define	syscall_error	C_SYMBOL_NAME(__syscall_error)
+#endif
+
+#define	ENTRY(name)							      \
+  .global C_SYMBOL_NAME(name);						      \
+  .align 2;								      \
+  C_LABEL(name)
+
+#define	PSEUDO(name, syscall_name, args)				      \
+  .global syscall_error;						      \
+  ENTRY (name)								      \
+  mov SYS_ify(syscall_name), %g1;				   	      \
+  ta 0;									      \
+  bcc 1f;								      \
+  sethi %hi(syscall_error), %g1;					      \
+  jmp %g1 + %lo(syscall_error);	nop;					      \
+1:
+
+#define	ret		retl; nop
+#define	r0		%o0
+#define	r1		%o1
+#define	MOVE(x,y)	mov x, y
+
+#endif	/* ASSEMBLER */
diff --git a/sysdeps/unix/sparc/vfork.S b/sysdeps/unix/sparc/vfork.S
new file mode 100644
index 0000000000..aeee3785f6
--- /dev/null
+++ b/sysdeps/unix/sparc/vfork.S
@@ -0,0 +1,34 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+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_vfork
+#define	 SYS_vfork	66
+#endif
+
+SYSCALL__ (vfork, 0)
+	/* %o1 is now 0 for the parent and 1 for the child.  Decrement it to
+	   make it -1 (all bits set) for the parent, and 0 (no bits set)
+	   for the child.  Then AND it with %o0, so the parent gets
+	   %o0&-1==0, and the child gets %o0&0==0.  */
+	sub %o1, 1, %o1
+	retl
+	and %o0, %o1, %o0
+
+weak_alias (__vfork, vfork)