freebsd-nq/lib/csu/i386/crt1_c.c
John Baldwin 99282790b7 Remove the sed hack for ABI tag notes.
The ELF notes compiled in C were placed in a section with the wrong type
(SHT_PROGBITS instead of SHT_NOTE).  Previously, sed was used on the
generated assembly to rewrite the section type.  Instead, write the notes
in assembly which permits setting the correct section type directly.

While here, move inline assembly entry points out of C and into assembly
for aarch64, arm, and riscv.

Reviewed by:	kib
Tested on:	amd64 (cirrus-ci), riscv64
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D25211
2020-06-15 19:38:48 +00:00

76 lines
2.1 KiB
C

/* LINTLIBRARY */
/*-
* Copyright 1996-1998 John D. Polstra.
* 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.
*
* 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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
#include "libc_private.h"
#include "ignore_init.c"
typedef void (*fptr)(void);
extern void _start(char *, ...);
#ifdef GCRT
extern void _mcleanup(void);
extern void monstartup(void *, void *);
extern int eprol;
extern int etext;
#endif
void _start1(fptr, int, char *[]) __dead2;
/* The entry function, C part. */
void
_start1(fptr cleanup, int argc, char *argv[])
{
char **env;
env = argv + argc + 1;
handle_argv(argc, argv, env);
if (&_DYNAMIC != NULL) {
atexit(cleanup);
} else {
process_irelocs();
_init_tls();
}
#ifdef GCRT
atexit(_mcleanup);
monstartup(&eprol, &etext);
__asm__("eprol:");
#endif
handle_static_init(argc, argv, env);
exit(main(argc, argv, env));
}
__asm(".hidden _start1");