Initial revision
From-SVN: r3431
This commit is contained in:
Jim Wilson
parent
d68398271c
commit
266f95411b
155
gcc/config/i386/sol2-c1.asm
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155
gcc/config/i386/sol2-c1.asm
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! crt1.s for Solaris 2, x86
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! Copyright (C) 1993 Free Software Foundation, Inc.
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! Written By Fred Fish, Nov 1992
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!
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! This file is free software; you can redistribute it and/or modify it
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! under the terms of the GNU General Public License as published by the
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! Free Software Foundation; either version 2, or (at your option) any
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! later version.
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!
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! In addition to the permissions in the GNU General Public License, the
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! Free Software Foundation gives you unlimited permission to link the
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! compiled version of this file with other programs, and to distribute
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! those programs without any restriction coming from the use of this
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! file. (The General Public License restrictions do apply in other
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! respects; for example, they cover modification of the file, and
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! distribution when not linked into another program.)
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!
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! This file is distributed in the hope that it will be useful, but
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! 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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! General Public License for more details.
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!
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! You should have received a copy of the GNU General Public License
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! along with this program; see the file COPYING. If not, write to
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! the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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!
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! As a special exception, if you link this library with files
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! compiled with GCC to produce an executable, this does not cause
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! the resulting executable to be covered by the GNU General Public License.
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! This exception does not however invalidate any other reasons why
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! the executable file might be covered by the GNU General Public License.
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!
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! This file takes control of the process from the kernel, as specified
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! in section 3 of the System V Application Binary Interface, Intel386
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! Processor Supplement. It has been constructed from information obtained
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! from the ABI, information obtained from single stepping existing
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! Solaris executables through their startup code with gdb, and from
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! information obtained by single stepping executables on other i386 SVR4
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! implementations. This file is the first thing linked into any executable.
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.file "crt1.s"
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.ident "GNU C crt1.s"
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.weak _cleanup
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.weak _DYNAMIC
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.text
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! Start creating the initial frame by pushing a NULL value for the return
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! address of the initial frame, and mark the end of the stack frame chain
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! (the innermost stack frame) with a NULL value, per page 3-32 of the ABI.
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! Initialize the first stack frame pointer in %ebp (the contents of which
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! are unspecified at process initialization).
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.globl _start
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_start:
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pushl $0x0
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pushl $0x0
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movl %esp,%ebp
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! As specified per page 3-32 of the ABI, %edx contains a function
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! pointer that should be registered with atexit(), for proper
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! shared object termination. Just push it onto the stack for now
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! to preserve it. We want to register _cleanup() first.
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pushl %edx
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! Check to see if there is an _cleanup() function linked in, and if
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! so, register it with atexit() as the last thing to be run by
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! atexit().
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movl $_cleanup,%eax
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testl %eax,%eax
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je .L1
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pushl $_cleanup
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call atexit
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addl $0x4,%esp
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.L1:
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! Now check to see if we have an _DYNAMIC table, and if so then
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! we need to register the function pointer previously in %edx, but
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! now conveniently saved on the stack as the argument to pass to
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! atexit().
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movl $_DYNAMIC,%eax
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testl %eax,%eax
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je .L2
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call atexit
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.L2:
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! Register _fini() with atexit(). We will take care of calling _init()
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! directly.
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pushl $_fini
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call atexit
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! Compute the address of the environment vector on the stack and load
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! it into the global variable _environ. Currently argc is at 8 off
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! the frame pointer. Fetch the argument count into %eax, scale by the
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! size of each arg (4 bytes) and compute the address of the environment
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! vector which is 16 bytes (the two zero words we pushed, plus argc,
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! plus the null word terminating the arg vector) further up the stack,
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! off the frame pointer (whew!).
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movl 8(%ebp),%eax
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leal 16(%ebp,%eax,4),%edx
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movl %edx,_environ
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! Push the environment vector pointer, the argument vector pointer,
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! and the argument count on to the stack to set up the arguments
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! for _init(), _fpstart(), and main(). Note that the environment
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! vector pointer and the arg count were previously loaded into
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! %edx and %eax respectively. The only new value we need to compute
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! is the argument vector pointer, which is at a fixed address off
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! the initial frame pointer.
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pushl %edx
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leal 12(%ebp),%edx
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pushl %edx
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pushl %eax
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! Call _init(argc, argv, environ), _fpstart(argc, argv, environ), and
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! main(argc, argv, environ).
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call _init
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call __fpstart
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call main
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! Pop the argc, argv, and environ arguments off the stack, push the
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! value returned from main(), and call exit().
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addl $12,%esp
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pushl %eax
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call exit
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! An inline equivalent of _exit, as specified in Figure 3-26 of the ABI.
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pushl $0x0
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movl $0x1,%eax
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lcall $7,$0
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! If all else fails, just try a halt!
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hlt
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.type _start,@function
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.size _start,.-_start
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! A dummy profiling support routine for non-profiling executables,
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! in case we link in some objects that have been compiled for profiling.
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.globl _mcount
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_mcount:
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ret
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.type _mcount,@function
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.size _mcount,.-_mcount
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50
gcc/config/i386/sol2-ci.asm
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50
gcc/config/i386/sol2-ci.asm
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@ -0,0 +1,50 @@
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! crti.s for Solaris 2, x86.
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! Copyright (C) 1993 Free Software Foundation, Inc.
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! Written By Fred Fish, Nov 1992
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!
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! This file is free software; you can redistribute it and/or modify it
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! under the terms of the GNU General Public License as published by the
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! Free Software Foundation; either version 2, or (at your option) any
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! later version.
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!
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! In addition to the permissions in the GNU General Public License, the
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! Free Software Foundation gives you unlimited permission to link the
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! compiled version of this file with other programs, and to distribute
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! those programs without any restriction coming from the use of this
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! file. (The General Public License restrictions do apply in other
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! respects; for example, they cover modification of the file, and
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! distribution when not linked into another program.)
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!
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! This file is distributed in the hope that it will be useful, but
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! 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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! General Public License for more details.
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!
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! You should have received a copy of the GNU General Public License
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! along with this program; see the file COPYING. If not, write to
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! the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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!
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! As a special exception, if you link this library with files
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! compiled with GCC to produce an executable, this does not cause
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! the resulting executable to be covered by the GNU General Public License.
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! This exception does not however invalidate any other reasons why
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! the executable file might be covered by the GNU General Public License.
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!
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! This file just supplies labeled starting points for the .init and .fini
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! sections. It is linked in before the values-Xx.o files and also before
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! crtbegin.o.
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.file "crti.s"
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.ident "GNU C crti.s"
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.section .init
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.globl _init
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.type _init,@function
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_init:
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.section .fini
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.globl _fini
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.type _fini,@function
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_fini:
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45
gcc/config/i386/sol2-cn.asm
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45
gcc/config/i386/sol2-cn.asm
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@ -0,0 +1,45 @@
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! crtn.s for Solaris 2, x86.
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! Copyright (C) 1993 Free Software Foundation, Inc.
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! Written By Fred Fish, Nov 1992
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!
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! This file is free software; you can redistribute it and/or modify it
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! under the terms of the GNU General Public License as published by the
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! Free Software Foundation; either version 2, or (at your option) any
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! later version.
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!
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! In addition to the permissions in the GNU General Public License, the
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! Free Software Foundation gives you unlimited permission to link the
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! compiled version of this file with other programs, and to distribute
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! those programs without any restriction coming from the use of this
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! file. (The General Public License restrictions do apply in other
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! respects; for example, they cover modification of the file, and
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! distribution when not linked into another program.)
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!
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! This file is distributed in the hope that it will be useful, but
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! 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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! General Public License for more details.
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!
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! You should have received a copy of the GNU General Public License
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! along with this program; see the file COPYING. If not, write to
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! the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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!
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! As a special exception, if you link this library with files
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! compiled with GCC to produce an executable, this does not cause
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! the resulting executable to be covered by the GNU General Public License.
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! This exception does not however invalidate any other reasons why
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! the executable file might be covered by the GNU General Public License.
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!
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! This file just supplies returns for the .init and .fini sections. It is
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! linked in after all other files.
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.file "crtn.o"
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.ident "GNU C crtn.o"
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.section .init
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ret $0x0
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.section .fini
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ret $0x0
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33
gcc/config/i386/sol2.h
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33
gcc/config/i386/sol2.h
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/* Target definitions for GNU compiler for Intel 80386 running Solaris 2
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Copyright (C) 1993 Free Software Foundation, Inc.
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Written by Fred Fish (fnf@cygnus.com).
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "i386/sysv4.h"
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/* The Solaris 2.0 x86 linker botches alignment of code sections.
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It tries to align to a 16 byte boundary by padding with 0x00000090
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ints, rather than 0x90 bytes (nop). This generates trash in the
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".init" section since the contribution from crtbegin.o is only 7
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bytes. The linker pads it to 16 bytes with a single 0x90 byte, and
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two 0x00000090 ints, which generates a segmentation violation when
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executed. This macro forces the assembler to do the padding, since
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it knows what it is doing. */
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#define FORCE_INIT_SECTION_ALIGN do { asm (ALIGN_ASM_OP ## " 16"); } while (0)
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28
gcc/config/i386/t-sol2
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28
gcc/config/i386/t-sol2
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@ -0,0 +1,28 @@
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# We need startup files for Solaris, since we don't get them with the system
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# FIXME: Should include "gmon.o" when it is ported.
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EXTRA_PARTS=crt1.o crti.o crtn.o crtbegin.o crtend.o
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# we need to supply our own assembly versions of libgcc1.c files,
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# since the user may not have native 'cc' available
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LIBGCC1 = libgcc1.null
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# gmon build rule:
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gmon.o: $(srcdir)/config/i386/gmon-sol2.c $(GCC_PASSES) $(CONFIG_H)
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$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) \
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-c $(srcdir)/config/i386/gmon-sol2.c -o gmon.o
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# Assemble startup files.
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# Apparently Sun believes that assembler files don't need comments, because no
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# single ASCII character is valid (tried them all). So we manually strip out
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# the comments with sed. This bug may only be in the Early Access releases.
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crt1.o: $(srcdir)/config/i386/sol2-c1.asm
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sed -e '/^!/d' <$(srcdir)/config/i386/sol2-c1.asm >crt1.s
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$(AS) -o crt1.o crt1.s
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crti.o: $(srcdir)/config/i386/sol2-ci.asm
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sed -e '/^!/d' <$(srcdir)/config/i386/sol2-ci.asm >crti.s
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$(AS) -o crti.o crti.s
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crtn.o: $(srcdir)/config/i386/sol2-cn.asm
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sed -e '/^!/d' <$(srcdir)/config/i386/sol2-cn.asm >crtn.s
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$(AS) -o crtn.o crtn.s
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