Reimplement in C, adding ELF support. if compiled with -DECOFF_COMPAT
(currently the default), then it compiles on both an ECOFF toolchain and on an ELF toolchain (but w/o support for dynamic linking or C++ constructors & destructors). If compiled without -DECOFF_COMPAT, it supports statically- or dynamically-linked ELF binaries (and shared libraries).
This commit is contained in:
cgd
parent
431817b1aa
commit
cccb7a88b4
@ -1,25 +1,46 @@
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# $NetBSD: Makefile,v 1.3 1995/12/20 12:36:56 cgd Exp $
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# $NetBSD: Makefile,v 1.4 1996/09/12 16:59:01 cgd Exp $
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ECOFF_COMPAT= yes
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CFLAGS+= -DLIBC_SCCS -DPIC -DDYNAMIC
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CFLAGS+= -I${.CURDIR}/../../libexec/rtld/include
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.if defined(ECOFF_COMPAT)
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CFLAGS+= -DECOFF_COMPAT
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.endif
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OBJS= crt0.o gcrt0.o crtbegin.o crtend.o
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CFLAGS+= -DLIBC_SCCS
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OBJS= crt0.o gcrt0.o
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CLEANFILES+= core a.out
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all: ${OBJS}
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crt0.o: crt0.s
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${CPP} -DCRT0 ${CFLAGS:M-[ID]*} ${.ALLSRC} | ${AS} -o $@
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@${LD} -x -r ${.TARGET}
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@mv a.out ${.TARGET}
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crt0.o: crt0.c
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@echo ${CC} ${CFLAGS} -DCRT0 -c ${.ALLSRC} -o ${.TARGET}
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@${CC} ${CFLAGS} -DCRT0 -c ${.ALLSRC} -o ${.TARGET}.o
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@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
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@rm -f ${.TARGET}.o
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gcrt0.o: crt0.s
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${CPP} -DMCRT0 ${CFLAGS:M-[ID]*} ${.ALLSRC} | ${AS} -o $@
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@${LD} -x -r ${.TARGET}
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@mv a.out ${.TARGET}
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gcrt0.o: crt0.c
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@echo ${CC} ${CFLAGS} -DMCRT0 -c ${.ALLSRC} -o ${.TARGET}
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@${CC} ${CFLAGS} -DMCRT0 -c ${.ALLSRC} -o ${.TARGET}.o
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@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
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@rm -f ${.TARGET}.o
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crtbegin.o: crtbegin.c
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@echo ${CC} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
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@${CC} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}.o
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@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
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@rm -f ${.TARGET}.o
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crtend.o: crtend.c
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@echo ${CC} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
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@${CC} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}.o
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@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
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@rm -f ${.TARGET}.o
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install:
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install ${COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
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${DESTDIR}/usr/lib
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depend lint tags:
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${DESTDIR}/usr/lib
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.include <bsd.prog.mk>
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220
lib/csu/alpha/crt0.c
Normal file
220
lib/csu/alpha/crt0.c
Normal file
@ -0,0 +1,220 @@
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/* $NetBSD: crt0.c,v 1.1 1996/09/12 16:59:02 cgd Exp $ */
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/*
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* Copyright (c) 1995 Christopher G. Demetriou
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* All rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef ECOFF_COMPAT
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#undef DYNAMIC
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#endif
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#include <stdlib.h>
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#include <sys/syscall.h>
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#ifdef DYNAMIC
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#include "rtld.h"
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#else
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typedef void Obj_Entry;
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#endif
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/*
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* Lots of the chunks of this file cobbled together from pieces of
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* other NetBSD crt files, including the common code.
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*/
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extern int __syscall __P((int, ...));
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#define _exit(v) __syscall(SYS_exit, (v))
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#define write(fd, s, n) __syscall(SYS_write, (fd), (s), (n))
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#define _FATAL(str) \
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do { \
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write(2, str, sizeof(str)); \
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_exit(1); \
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} while (0)
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static char *_strrchr __P((char *, char));
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char **environ;
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char *__progname = "";
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#ifndef ECOFF_COMPAT
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extern void __init __P((void));
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extern void __fini __P((void));
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#endif /* ECOFF_COMPAT */
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#ifdef DYNAMIC
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void rtld_setup __P((void (*)(void), const Obj_Entry *obj));
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const Obj_Entry *mainprog_obj;
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/*
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* Arrange for _DYNAMIC to exist weakly at address zero. That way,
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* if we happen to be compiling without -static but with without any
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* shared libs present, things will still work.
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*/
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asm(".weak _DYNAMIC; _DYNAMIC = 0");
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extern int _DYNAMIC;
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#endif /* DYNAMIC */
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#ifdef MCRT0
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extern void monstartup __P((u_long, u_long));
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extern void _mcleanup __P((void));
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extern unsigned char _etext, _eprol;
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#endif /* MCRT0 */
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void
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__start(sp, cleanup, obj)
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char **sp;
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void (*cleanup) __P((void)); /* from shared loader */
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const Obj_Entry *obj; /* from shared loader */
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{
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long argc;
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char **argv, *namep;
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argc = *(long *)sp;
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argv = sp + 1;
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environ = sp + 2 + argc; /* 2: argc + NULL ending argv */
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if ((namep = argv[0]) != NULL) { /* NULL ptr if argc = 0 */
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if ((__progname = _strrchr(namep, '/')) == NULL)
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__progname = namep;
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else
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__progname++;
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}
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#ifdef DYNAMIC
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if (&_DYNAMIC != NULL)
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rtld_setup(cleanup, obj);
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#endif
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#ifdef MCRT0
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atexit(_mcleanup);
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monstartup((u_long)&_eprol, (u_long)&_etext);
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#endif
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#ifndef ECOFF_COMPAT
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atexit(__fini);
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__init();
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#endif /* ECOFF_COMPAT */
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exit(main(argc, argv, environ));
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}
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static char *
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_strrchr(p, ch)
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register char *p, ch;
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{
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register char *save;
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for (save = NULL;; ++p) {
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if (*p == ch)
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save = (char *)p;
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if (!*p)
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return(save);
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}
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/* NOTREACHED */
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}
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#ifdef MCRT0
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asm (" .text");
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asm ("_eprol:");
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#endif
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#ifdef DYNAMIC
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void
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rtld_setup(cleanup, obj)
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void (*cleanup) __P((void));
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const Obj_Entry *obj;
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{
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if ((obj == NULL) || (obj->magic != RTLD_MAGIC))
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_FATAL("Corrupt Obj_Entry pointer in GOT");
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if (obj->version != RTLD_VERSION)
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_FATAL("Dynamic linker version mismatch");
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mainprog_obj = obj;
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atexit(cleanup);
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}
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void *
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dlopen(name, mode)
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char *name;
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int mode;
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{
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if (mainprog_obj == NULL)
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return NULL;
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return (mainprog_obj->dlopen)(name, mode);
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}
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int
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dlclose(fd)
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void *fd;
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{
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if (mainprog_obj == NULL)
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return -1;
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return (mainprog_obj->dlclose)(fd);
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}
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void *
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dlsym(fd, name)
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void *fd;
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char *name;
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{
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if (mainprog_obj == NULL)
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return NULL;
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return (mainprog_obj->dlsym)(fd, name);
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}
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#if 0 /* not supported for ELF shlibs, apparently */
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int
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dlctl(fd, cmd, arg)
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void *fd, *arg;
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int cmd;
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{
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if (mainprog_obj == NULL)
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return -1;
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return (mainprog_obj->dlctl)(fd, cmd, arg);
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}
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#endif
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char *
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dlerror()
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{
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if (mainprog_obj == NULL)
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return NULL;
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return (mainprog_obj->dlerror)();
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}
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#endif /* DYNAMIC */
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@ -1,102 +0,0 @@
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/* $NetBSD: crt0.s,v 1.6 1996/09/09 01:03:38 cgd Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
|
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* notice and this permission notice appear in all copies of the
|
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <machine/asm.h>
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/*
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* Set up the global variables provided by crt0:
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* environ and __progname
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*/
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BSS(environ, 8)
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.data
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.align 3
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EXPORT(__progname)
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.quad $L1
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$L1:
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.quad 0 /* Null string, plus padding. */
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.text
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LEAF(__start, 0) /* XXX */
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.set noreorder
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br pv, L1
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L1: SETGP(pv)
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ldq s0, 0(sp) /* get argc from stack */
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lda s1, 8(sp) /* get pointer to argv */
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s8addq s0, s1, s2 /* add number of argv pointers */
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addq s2, 8, s2 /* and skip the null pointer */
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stq s2, environ /* save the newly-found env pointer */
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#ifdef MCRT0
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eprol:
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lda a0, eprol
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lda a1, etext
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CALL(monstartup) /* monstartup(eprol, etext); */
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lda a0, _mcleanup
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CALL(atexit) /* atext(_mcleanup); */
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stl zero, errno
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#endif
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ldq a0, 0(s1) /* a0 = argv[0]; */
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beq a0, L11 /* if it's null, then punt */
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CONST(0x2f, a1) /* a1 = '/' */
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CALL(strrchr)
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addq v0, 1, a0 /* move past the /, if there was one */
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bne v0, L10 /* if a / found */
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ldq a0, 0(s1) /* a0 = argv[0]; */
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L10:
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stq a0, __progname /* store the program name */
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L11:
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/* call main() */
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callmain:
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mov s0, a0
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mov s1, a1
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mov s2, a2
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CALL(main) /* v0 = main(argc, argv, env); */
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/* on return from main, call exit() with its return value. */
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mov v0, a0
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CALL(exit) /* exit(rv); */
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||||
/* if that failed, bug out. */
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call_pal 0x81 /* XXX op_bugchk */
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||||
.set reorder
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END(__start)
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#ifndef MCRT0
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LEAF(moncontrol, 0)
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RET
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END(moncontrol)
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LEAF(_mcount, 0)
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.set noat
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ret zero, (at_reg), 1
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.set at
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END(_mcount)
|
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#endif
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||||
111
lib/csu/alpha/crtbegin.c
Normal file
111
lib/csu/alpha/crtbegin.c
Normal file
@ -0,0 +1,111 @@
|
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/* $NetBSD: crtbegin.c,v 1.1 1996/09/12 16:59:03 cgd Exp $ */
|
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|
||||
/*
|
||||
* Copyright (c) 1993 Paul Kranenburg
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Paul Kranenburg.
|
||||
* 4. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef ECOFF_COMPAT
|
||||
|
||||
/*
|
||||
* XXX EVENTUALLY SHOULD BE MERGED BACK WITH c++rt0.c
|
||||
*/
|
||||
|
||||
/*
|
||||
* Run-time module for GNU C++ compiled shared libraries.
|
||||
*
|
||||
* The linker constructs the following arrays of pointers to global
|
||||
* constructors and destructors. The first element contains the
|
||||
* number of pointers in each.
|
||||
* The tables are also null-terminated.
|
||||
*/
|
||||
#include <stdlib.h>
|
||||
|
||||
static void (*__CTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".ctors"))) = { (void *)-1 }; /* XXX */
|
||||
static void (*__DTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".dtors"))) = { (void *)-1 }; /* XXX */
|
||||
|
||||
static void __dtors __P((void));
|
||||
static void __ctors __P((void));
|
||||
|
||||
static void
|
||||
__dtors()
|
||||
{
|
||||
unsigned long i = (unsigned long) __DTOR_LIST__[0];
|
||||
void (**p)(void);
|
||||
|
||||
if (i == -1) {
|
||||
for (i = 1; __DTOR_LIST__[i] != NULL; i++)
|
||||
;
|
||||
i--;
|
||||
}
|
||||
p = __DTOR_LIST__ + i;
|
||||
while (i--)
|
||||
(**p--)();
|
||||
}
|
||||
|
||||
static void
|
||||
__ctors()
|
||||
{
|
||||
void (**p)(void) = __CTOR_LIST__ + 1;
|
||||
|
||||
while (*p)
|
||||
(**p++)();
|
||||
}
|
||||
|
||||
extern void __init(void) __attribute__((section(".init")));
|
||||
|
||||
void
|
||||
__init()
|
||||
{
|
||||
static int initialized = 0;
|
||||
|
||||
/*
|
||||
* Call global constructors.
|
||||
* Arrange to call global destructors at exit.
|
||||
*/
|
||||
if (!initialized) {
|
||||
initialized = 1;
|
||||
__ctors();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
extern void __fini(void) __attribute__((section(".fini")));
|
||||
|
||||
void
|
||||
__fini()
|
||||
{
|
||||
/*
|
||||
* Call global destructors.
|
||||
*/
|
||||
__dtors();
|
||||
}
|
||||
|
||||
#endif /* !ECOFF_COMPAT */
|
||||
12
lib/csu/alpha/crtend.c
Normal file
12
lib/csu/alpha/crtend.c
Normal file
@ -0,0 +1,12 @@
|
||||
/* $NetBSD: crtend.c,v 1.1 1996/09/12 16:59:04 cgd Exp $ */
|
||||
|
||||
#ifndef ECOFF_COMPAT
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
|
||||
static void (*__CTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".ctors"))) = { (void *)0 }; /* XXX */
|
||||
static void (*__DTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".dtors"))) = { (void *)0 }; /* XXX */
|
||||
|
||||
#endif /* !ECOFF_COMPAT */
|
||||
111
lib/csu/common_elf/crtbegin.c
Normal file
111
lib/csu/common_elf/crtbegin.c
Normal file
@ -0,0 +1,111 @@
|
||||
/* $NetBSD: crtbegin.c,v 1.1 1996/09/12 16:59:03 cgd Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1993 Paul Kranenburg
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Paul Kranenburg.
|
||||
* 4. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef ECOFF_COMPAT
|
||||
|
||||
/*
|
||||
* XXX EVENTUALLY SHOULD BE MERGED BACK WITH c++rt0.c
|
||||
*/
|
||||
|
||||
/*
|
||||
* Run-time module for GNU C++ compiled shared libraries.
|
||||
*
|
||||
* The linker constructs the following arrays of pointers to global
|
||||
* constructors and destructors. The first element contains the
|
||||
* number of pointers in each.
|
||||
* The tables are also null-terminated.
|
||||
*/
|
||||
#include <stdlib.h>
|
||||
|
||||
static void (*__CTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".ctors"))) = { (void *)-1 }; /* XXX */
|
||||
static void (*__DTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".dtors"))) = { (void *)-1 }; /* XXX */
|
||||
|
||||
static void __dtors __P((void));
|
||||
static void __ctors __P((void));
|
||||
|
||||
static void
|
||||
__dtors()
|
||||
{
|
||||
unsigned long i = (unsigned long) __DTOR_LIST__[0];
|
||||
void (**p)(void);
|
||||
|
||||
if (i == -1) {
|
||||
for (i = 1; __DTOR_LIST__[i] != NULL; i++)
|
||||
;
|
||||
i--;
|
||||
}
|
||||
p = __DTOR_LIST__ + i;
|
||||
while (i--)
|
||||
(**p--)();
|
||||
}
|
||||
|
||||
static void
|
||||
__ctors()
|
||||
{
|
||||
void (**p)(void) = __CTOR_LIST__ + 1;
|
||||
|
||||
while (*p)
|
||||
(**p++)();
|
||||
}
|
||||
|
||||
extern void __init(void) __attribute__((section(".init")));
|
||||
|
||||
void
|
||||
__init()
|
||||
{
|
||||
static int initialized = 0;
|
||||
|
||||
/*
|
||||
* Call global constructors.
|
||||
* Arrange to call global destructors at exit.
|
||||
*/
|
||||
if (!initialized) {
|
||||
initialized = 1;
|
||||
__ctors();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
extern void __fini(void) __attribute__((section(".fini")));
|
||||
|
||||
void
|
||||
__fini()
|
||||
{
|
||||
/*
|
||||
* Call global destructors.
|
||||
*/
|
||||
__dtors();
|
||||
}
|
||||
|
||||
#endif /* !ECOFF_COMPAT */
|
||||
12
lib/csu/common_elf/crtend.c
Normal file
12
lib/csu/common_elf/crtend.c
Normal file
@ -0,0 +1,12 @@
|
||||
/* $NetBSD: crtend.c,v 1.1 1996/09/12 16:59:04 cgd Exp $ */
|
||||
|
||||
#ifndef ECOFF_COMPAT
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
|
||||
static void (*__CTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".ctors"))) = { (void *)0 }; /* XXX */
|
||||
static void (*__DTOR_LIST__[1]) __P((void))
|
||||
__attribute__((section(".dtors"))) = { (void *)0 }; /* XXX */
|
||||
|
||||
#endif /* !ECOFF_COMPAT */
|
||||
Loading…
Reference in New Issue
Block a user