Initial revision

From-SVN: r3431

5 files changed, 311 insertions, 0 deletions

diff --git a/gcc/config/i386/sol2-c1.asm b/gcc/config/i386/sol2-c1.asm
new file mode 100644
index 0000000..bd7c737
--- /dev/null
+++ b/gcc/config/i386/sol2-c1.asm
@@ -0,0 +1,155 @@
+! crt1.s for Solaris 2, x86
+
+!   Copyright (C) 1993 Free Software Foundation, Inc.
+!   Written By Fred Fish, Nov 1992
+! 
+! This file is free software; you can redistribute it and/or modify it
+! under the terms of the GNU General Public License as published by the
+! Free Software Foundation; either version 2, or (at your option) any
+! later version.
+! 
+! In addition to the permissions in the GNU General Public License, the
+! Free Software Foundation gives you unlimited permission to link the
+! compiled version of this file with other programs, and to distribute
+! those programs without any restriction coming from the use of this
+! file.  (The General Public License restrictions do apply in other
+! respects; for example, they cover modification of the file, and
+! distribution when not linked into another program.)
+! 
+! This file 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
+! General Public License for more details.
+! 
+! You should have received a copy of the GNU General Public License
+! along with this program; see the file COPYING.  If not, write to
+! the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+! 
+!    As a special exception, if you link this library with files
+!    compiled with GCC to produce an executable, this does not cause
+!    the resulting executable to be covered by the GNU General Public License.
+!    This exception does not however invalidate any other reasons why
+!    the executable file might be covered by the GNU General Public License.
+! 
+
+! This file takes control of the process from the kernel, as specified
+! in section 3 of the System V Application Binary Interface, Intel386
+! Processor Supplement.  It has been constructed from information obtained
+! from the ABI, information obtained from single stepping existing
+! Solaris executables through their startup code with gdb, and from
+! information obtained by single stepping executables on other i386 SVR4
+! implementations.  This file is the first thing linked into any executable.
+
+	.file	"crt1.s"
+	.ident	"GNU C crt1.s"
+	.weak	_cleanup
+	.weak	_DYNAMIC
+	.text
+
+! Start creating the initial frame by pushing a NULL value for the return
+! address of the initial frame, and mark the end of the stack frame chain
+! (the innermost stack frame) with a NULL value, per page 3-32 of the ABI.
+! Initialize the first stack frame pointer in %ebp (the contents of which
+! are unspecified at process initialization).
+
+	.globl	_start
+_start:
+	pushl	$0x0
+	pushl	$0x0
+	movl	%esp,%ebp
+
+! As specified per page 3-32 of the ABI, %edx contains a function 
+! pointer that should be registered with atexit(), for proper
+! shared object termination.  Just push it onto the stack for now
+! to preserve it.  We want to register _cleanup() first.
+
+	pushl	%edx
+
+! Check to see if there is an _cleanup() function linked in, and if
+! so, register it with atexit() as the last thing to be run by
+! atexit().
+
+	movl	$_cleanup,%eax
+	testl	%eax,%eax
+	je	.L1
+	pushl	$_cleanup
+	call	atexit
+	addl	$0x4,%esp
+.L1:
+
+! Now check to see if we have an _DYNAMIC table, and if so then
+! we need to register the function pointer previously in %edx, but
+! now conveniently saved on the stack as the argument to pass to
+! atexit().
+
+	movl	$_DYNAMIC,%eax
+	testl	%eax,%eax
+	je	.L2
+	call	atexit
+.L2:
+
+! Register _fini() with atexit().  We will take care of calling _init()
+! directly.
+
+	pushl	$_fini
+	call	atexit
+
+! Compute the address of the environment vector on the stack and load
+! it into the global variable _environ.  Currently argc is at 8 off
+! the frame pointer.  Fetch the argument count into %eax, scale by the
+! size of each arg (4 bytes) and compute the address of the environment
+! vector which is 16 bytes (the two zero words we pushed, plus argc,
+! plus the null word terminating the arg vector) further up the stack,
+! off the frame pointer (whew!).
+
+	movl	8(%ebp),%eax
+	leal	16(%ebp,%eax,4),%edx
+	movl	%edx,_environ
+
+! Push the environment vector pointer, the argument vector pointer,
+! and the argument count on to the stack to set up the arguments
+! for _init(), _fpstart(), and main().  Note that the environment
+! vector pointer and the arg count were previously loaded into
+! %edx and %eax respectively.  The only new value we need to compute
+! is the argument vector pointer, which is at a fixed address off
+! the initial frame pointer.
+
+	pushl	%edx
+	leal	12(%ebp),%edx
+	pushl	%edx
+	pushl	%eax
+
+! Call _init(argc, argv, environ), _fpstart(argc, argv, environ), and
+! main(argc, argv, environ).
+
+	call	_init
+	call	__fpstart
+	call	main
+
+! Pop the argc, argv, and environ arguments off the stack, push the
+! value returned from main(), and call exit().
+
+	addl	$12,%esp
+	pushl	%eax
+	call	exit
+
+! An inline equivalent of _exit, as specified in Figure 3-26 of the ABI.
+
+	pushl	$0x0
+	movl	$0x1,%eax
+	lcall	$7,$0
+
+! If all else fails, just try a halt!
+
+	hlt
+	.type	_start,@function
+	.size	_start,.-_start
+
+! A dummy profiling support routine for non-profiling executables,
+! in case we link in some objects that have been compiled for profiling.
+
+	.globl	_mcount
+_mcount:
+	ret
+	.type	_mcount,@function
+	.size	_mcount,.-_mcount
diff --git a/gcc/config/i386/sol2-ci.asm b/gcc/config/i386/sol2-ci.asm
new file mode 100644
index 0000000..0d9b718
--- /dev/null
+++ b/gcc/config/i386/sol2-ci.asm
@@ -0,0 +1,50 @@
+! crti.s for Solaris 2, x86.
+
+!   Copyright (C) 1993 Free Software Foundation, Inc.
+!   Written By Fred Fish, Nov 1992
+! 
+! This file is free software; you can redistribute it and/or modify it
+! under the terms of the GNU General Public License as published by the
+! Free Software Foundation; either version 2, or (at your option) any
+! later version.
+! 
+! In addition to the permissions in the GNU General Public License, the
+! Free Software Foundation gives you unlimited permission to link the
+! compiled version of this file with other programs, and to distribute
+! those programs without any restriction coming from the use of this
+! file.  (The General Public License restrictions do apply in other
+! respects; for example, they cover modification of the file, and
+! distribution when not linked into another program.)
+! 
+! This file 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
+! General Public License for more details.
+! 
+! You should have received a copy of the GNU General Public License
+! along with this program; see the file COPYING.  If not, write to
+! the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+! 
+!    As a special exception, if you link this library with files
+!    compiled with GCC to produce an executable, this does not cause
+!    the resulting executable to be covered by the GNU General Public License.
+!    This exception does not however invalidate any other reasons why
+!    the executable file might be covered by the GNU General Public License.
+! 
+
+! This file just supplies labeled starting points for the .init and .fini
+! sections.  It is linked in before the values-Xx.o files and also before
+! crtbegin.o.
+ 
+	.file	"crti.s"
+	.ident	"GNU C crti.s"
+
+	.section .init
+	.globl	_init
+	.type	_init,@function
+_init:
+
+	.section .fini
+	.globl	_fini
+	.type	_fini,@function
+_fini:
diff --git a/gcc/config/i386/sol2-cn.asm b/gcc/config/i386/sol2-cn.asm
new file mode 100644
index 0000000..e55eac2
--- /dev/null
+++ b/gcc/config/i386/sol2-cn.asm
@@ -0,0 +1,45 @@
+! crtn.s for Solaris 2, x86.
+
+!   Copyright (C) 1993 Free Software Foundation, Inc.
+!   Written By Fred Fish, Nov 1992
+! 
+! This file is free software; you can redistribute it and/or modify it
+! under the terms of the GNU General Public License as published by the
+! Free Software Foundation; either version 2, or (at your option) any
+! later version.
+! 
+! In addition to the permissions in the GNU General Public License, the
+! Free Software Foundation gives you unlimited permission to link the
+! compiled version of this file with other programs, and to distribute
+! those programs without any restriction coming from the use of this
+! file.  (The General Public License restrictions do apply in other
+! respects; for example, they cover modification of the file, and
+! distribution when not linked into another program.)
+! 
+! This file 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
+! General Public License for more details.
+! 
+! You should have received a copy of the GNU General Public License
+! along with this program; see the file COPYING.  If not, write to
+! the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+! 
+!    As a special exception, if you link this library with files
+!    compiled with GCC to produce an executable, this does not cause
+!    the resulting executable to be covered by the GNU General Public License.
+!    This exception does not however invalidate any other reasons why
+!    the executable file might be covered by the GNU General Public License.
+! 
+
+! This file just supplies returns for the .init and .fini sections.  It is
+! linked in after all other files.
+
+	.file	"crtn.o"
+	.ident	"GNU C crtn.o"
+
+	.section .init
+	ret    $0x0
+
+	.section .fini
+	ret    $0x0
diff --git a/gcc/config/i386/sol2.h b/gcc/config/i386/sol2.h
new file mode 100644
index 0000000..126bd08
--- /dev/null
+++ b/gcc/config/i386/sol2.h
@@ -0,0 +1,33 @@
+/* Target definitions for GNU compiler for Intel 80386 running Solaris 2
+   Copyright (C) 1993 Free Software Foundation, Inc.
+
+   Written by Fred Fish (fnf@cygnus.com).
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "i386/sysv4.h"
+
+/* The Solaris 2.0 x86 linker botches alignment of code sections.
+   It tries to align to a 16 byte boundary by padding with 0x00000090
+   ints, rather than 0x90 bytes (nop).  This generates trash in the
+   ".init" section since the contribution from crtbegin.o is only 7
+   bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and
+   two 0x00000090 ints, which generates a segmentation violation when
+   executed.  This macro forces the assembler to do the padding, since
+   it knows what it is doing. */
+
+#define FORCE_INIT_SECTION_ALIGN do { asm (ALIGN_ASM_OP ## " 16"); } while (0)
diff --git a/gcc/config/i386/t-sol2 b/gcc/config/i386/t-sol2
new file mode 100644
index 0000000..972fd73
--- /dev/null
+++ b/gcc/config/i386/t-sol2
@@ -0,0 +1,28 @@
+# We need startup files for Solaris, since we don't get them with the system
+# FIXME:  Should include "gmon.o" when it is ported.
+
+EXTRA_PARTS=crt1.o crti.o crtn.o crtbegin.o crtend.o
+
+# we need to supply our own assembly versions of libgcc1.c files,
+# since the user may not have native 'cc' available
+
+LIBGCC1 = libgcc1.null
+
+# gmon build rule:
+gmon.o:	$(srcdir)/config/i386/gmon-sol2.c $(GCC_PASSES) $(CONFIG_H)
+	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) \
+		-c $(srcdir)/config/i386/gmon-sol2.c -o gmon.o
+
+# Assemble startup files.
+# Apparently Sun believes that assembler files don't need comments, because no
+# single ASCII character is valid (tried them all).  So we manually strip out
+# the comments with sed.  This bug may only be in the Early Access releases.
+crt1.o: $(srcdir)/config/i386/sol2-c1.asm
+	sed -e '/^!/d' <$(srcdir)/config/i386/sol2-c1.asm >crt1.s
+	$(AS) -o crt1.o crt1.s
+crti.o: $(srcdir)/config/i386/sol2-ci.asm
+	sed -e '/^!/d' <$(srcdir)/config/i386/sol2-ci.asm >crti.s
+	$(AS) -o crti.o crti.s
+crtn.o: $(srcdir)/config/i386/sol2-cn.asm
+	sed -e '/^!/d' <$(srcdir)/config/i386/sol2-cn.asm >crtn.s
+	$(AS) -o crtn.o crtn.s