0cdf705cc6
-By adding MKGCC=yes and MKGCCCMDS=yes on the make commandline it is now possible to compile and install GCC on the system. Before doing this, if you are not using the build.sh script, you will need to call the fetch scripts in order to retrieve the sources of GCC and its dependencies. -Reduce difference with NetBSD share/mk Move Minix-specific parameters from bsd.gcc.mk to bsd.own.mk, which is anyway patched, so that bsd.gcc.mk is now aligned on the NetBSD version. -Clean libraries dependencies, compiles stdc++ only if gcc is also compiled (it is part of the gcc sources) -Correct minix.h header sequence, cleanup spec headers. -Fix cross-compilation from a 32bit host targeting MINIX/arm Change-Id: I1b234af18eed4ab5675188244e931b2a2b7bd943
72 lines
2.5 KiB
ArmAsm
72 lines
2.5 KiB
ArmAsm
/* $NetBSD: crt0.S,v 1.1 2012/08/13 02:49:04 matt Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arm/asm.h>
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RCSID("$NetBSD: crt0.S,v 1.1 2012/08/13 02:49:04 matt Exp $")
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STRONG_ALIAS(_start,__start)
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_ENTRY(__start)
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#ifdef __minix
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mov r3, r2 /* cleanup */
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mov r4, r1 /* obj_main */
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and r5, r5, #0 /* ps_strings, always NULL on MINIX */
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/* Get argc, argv, and envp from stack */
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ldr r0, [sp, #0] /* get argc */
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add r1, sp, #4 /* argv = sp + 4 */
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add r2, r1, r0, lsl #2 /* envp = argv + argc*4 */
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add r2, r2, #4 /* skip NULL terminator */
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#else
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/*
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* We need to swap ps_strings and cleanup
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*/
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mov ip, r0 /* ps_strings -> tmp */
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mov r0, r2 /* cleanup -> ps_strings */
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mov r2, ip /* tmp -> ps_strings */
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#endif /* __minix */
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/* Ensure the stack is properly aligned before calling C code. */
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bic sp, sp, #7
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#ifdef __minix
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/* Store obj and ps_strings on the stack */
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sub sp, sp, #8
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str r5, [sp, #4]
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str r4, [sp, #0]
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#endif
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/*
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* void ___start(void (*cleanup)(void),
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* const Obj_Entry *obj,
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* struct ps_strings *ps_strings);
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*/
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b ___start
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