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The main reason for this is to reduce diffs between all the crt1.c's.

Browse Source 
Assembler macros are tidied up and made as similar as sanely possible.
The macros are translated into C (__inline static) functions for lint.

Declaration orders are made the same.
Declarations are all ISOfied and tidied up.

Comment contents have gratuitous diffs removed.

The net result is a bunch of crt1.c's that are 90% the same.
It may be possible to now encapsulate the differences in one
MD header, and have only one MI crt1.c file (although the macros
to do this may be ugly).

Helpful comments by:	obrien, bde
Alpha tested by:	des
i386-elf tested by:	markm
This commit is contained in:
Mark Murray 2002-07-16 12:28:50 +00:00
parent c0cb106043
commit 828191256b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=100167
6 changed files with 144 additions and 95 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
lib/csu/alpha/crt1.c
View File

@ -1,5 +1,5 @@
/*
* Copyright 2001 David E. O'Brien
/*-
* Copyright 2001 David E. O'Brien.
* All rights reserved.
* Copyright 1996-1998 John D. Polstra.
* All rights reserved.
@ -35,22 +35,25 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
struct Struct_Obj_Entry;
struct ps_strings;
#pragma weak _DYNAMIC
extern int _DYNAMIC;
#pragma weak _DYNAMIC
extern void _init(void);
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void _start(char **, void (*)(void), struct Struct_Obj_Entry *,
struct ps_strings *);
@ -66,18 +69,17 @@ char **environ;
const char *__progname = "";
/* The entry function. */
/* ARGSUSED */
void
_start(char **ap,
void (*cleanup)(void), /* from shared loader */
struct Struct_Obj_Entry *obj __unused, /* from shared loader */
struct ps_strings *ps_strings __unused)
_start(char **ap, void (*cleanup)(void), struct Struct_Obj_Entry *obj __unused,
struct ps_strings *ps_strings __unused)
{
int argc;
char **argv;
char **env;
const char *s;
argc = * (long *) ap;
argc = *(long *)(void *)ap;
argv = ap + 1;
env = ap + 2 + argc;
environ = env;

47
lib/csu/amd64/crt1.c
View File

@ -23,21 +23,26 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stddef.h>
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
extern int _DYNAMIC;
#pragma weak _DYNAMIC
typedef void (*fptr)(void);
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void _start(char *, ...);
#ifdef GCRT
extern void _mcleanup(void);
@ -46,33 +51,35 @@ extern int eprol;
extern int etext;
#endif
extern int _DYNAMIC;
#pragma weak _DYNAMIC
#ifdef __i386__
#define get_rtld_cleanup() \
({ fptr __value; \
__asm__("movl %%edx,%0" : "=rm"(__value)); \
__value; })
#else
#error "This file only supports the i386 architecture"
#endif
char **environ;
const char *__progname = "";
void
_start(char *arguments, ...)
static __inline fptr
get_rtld_cleanup(void)
{
fptr rtld_cleanup;
fptr retval;
#ifdef __GNUC__
__asm__("movl %%edx,%0" : "=rm"(retval));
#else
retval = (fptr)0; /* XXXX Fix this for other compilers */
#endif
return(retval);
}
/* The entry function. */
void
_start(char *ap, ...)
{
fptr cleanup;
int argc;
char **argv;
char **env;
const char *s;
rtld_cleanup = get_rtld_cleanup();
argv = &arguments;
argc = * (int *) (argv - 1);
cleanup = get_rtld_cleanup();
argv = &ap;
argc = *(long *)(void *)(argv - 1);
env = argv + argc + 1;
environ = env;
if (argc > 0 && argv[0] != NULL) {
@ -83,7 +90,7 @@ _start(char *arguments, ...)
}
if (&_DYNAMIC != NULL)
atexit(rtld_cleanup);
atexit(cleanup);
#ifdef GCRT
atexit(_mcleanup);

47
lib/csu/i386-elf/crt1.c
View File

@ -23,21 +23,26 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stddef.h>
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
extern int _DYNAMIC;
#pragma weak _DYNAMIC
typedef void (*fptr)(void);
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void _start(char *, ...);
#ifdef GCRT
extern void _mcleanup(void);
@ -46,33 +51,35 @@ extern int eprol;
extern int etext;
#endif
extern int _DYNAMIC;
#pragma weak _DYNAMIC
#ifdef __i386__
#define get_rtld_cleanup() \
({ fptr __value; \
__asm__("movl %%edx,%0" : "=rm"(__value)); \
__value; })
#else
#error "This file only supports the i386 architecture"
#endif
char **environ;
const char *__progname = "";
void
_start(char *arguments, ...)
static __inline fptr
get_rtld_cleanup(void)
{
fptr rtld_cleanup;
fptr retval;
#ifdef __GNUC__
__asm__("movl %%edx,%0" : "=rm"(retval));
#else
retval = (fptr)0; /* XXXX Fix this for other compilers */
#endif
return(retval);
}
/* The entry function. */
void
_start(char *ap, ...)
{
fptr cleanup;
int argc;
char **argv;
char **env;
const char *s;
rtld_cleanup = get_rtld_cleanup();
argv = &arguments;
argc = * (int *) (argv - 1);
cleanup = get_rtld_cleanup();
argv = &ap;
argc = *(long *)(void *)(argv - 1);
env = argv + argc + 1;
environ = env;
if (argc > 0 && argv[0] != NULL) {
@ -83,7 +90,7 @@ _start(char *arguments, ...)
}
if (&_DYNAMIC != NULL)
atexit(rtld_cleanup);
atexit(cleanup);
#ifdef GCRT
atexit(_mcleanup);

34
lib/csu/ia64/crt1.c
View File

@ -31,11 +31,14 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
@ -45,9 +48,10 @@ struct ps_strings;
#pragma weak _DYNAMIC
extern int _DYNAMIC;
extern void _init(void);
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void _start(char **, struct ps_strings *, void (*)(void));
#ifdef GCRT
extern void _mcleanup(void);
@ -59,17 +63,10 @@ extern int etext;
char **environ;
const char *__progname = "";
/* The entry function. */
void
_start(char **ap,
struct ps_strings *ps_strings,
void (*cleanup)(void))
static __inline void
fix_gp(void)
{
int argc;
char **argv;
char **env;
const char *s;
#ifdef __GNUC__
/* Calculate gp */
__asm __volatile(" \
movl gp=@gprel(1f) ; \
@ -78,8 +75,21 @@ _start(char **ap,
;; ; \
sub gp=r14,gp ; \
;; ");
#endif
}
argc = * (long *) ap;
/* The entry function. */
/* ARGSUSED */
void
_start(char **ap, struct ps_strings *ps_strings __unused, void (*cleanup)(void))
{
int argc;
char **argv;
char **env;
const char *s;
fix_gp();
argc = *(long *)(void *)ap;
argv = ap + 1;
env = ap + 2 + argc;
environ = env;

28
lib/csu/powerpc/crt1.c
View File

@ -38,23 +38,28 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
struct Struct_Obj_Entry;
struct ps_strings;
#pragma weak _DYNAMIC
extern int _DYNAMIC;
#pragma weak _DYNAMIC
extern void _init(void);
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void _start(int, char **, char **, const struct Struct_Obj_Entry *,
void (*)(void), struct ps_strings *);
#ifdef GCRT
extern void _mcleanup(void);
@ -67,23 +72,20 @@ char **environ;
const char *__progname = "";
struct ps_strings *__ps_strings;
/* The entry function.
*
/* The entry function. */
/*
* First 5 arguments are specified by the PowerPC SVR4 ABI.
* The last argument, ps_strings, is a BSD extension.
*/
/* ARGSUSED */
void
_start(argc, argv, envp, obj, cleanup, ps_strings)
int argc;
char **argv, **envp;
const struct Struct_Obj_Entry *obj; /* from shared loader */
void (*cleanup)(void); /* from shared loader */
struct ps_strings *ps_strings; /* BSD extension */
_start(int argc, char **argv, char **env,
const struct Struct_Obj_Entry *obj __unused, void (*cleanup)(void),
struct ps_strings *ps_strings)
{
char *namep;
const char *s;
environ = envp;
environ = env;
if (argc > 0 && argv[0] != NULL) {
__progname = argv[0];
@ -106,7 +108,7 @@ _start(argc, argv, envp, obj, cleanup, ps_strings)
monstartup(&eprol, &etext);
#endif
_init();
exit( main(argc, argv, envp) );
exit( main(argc, argv, env) );
}
#ifdef GCRT

63
lib/csu/sparc64/crt1.c
View File

@ -1,5 +1,5 @@
/*
* Copyright 2001 David E. O'Brien
/*-
* Copyright 2001 David E. O'Brien.
* All rights reserved.
* Copyright (c) 1995, 1998 Berkeley Software Design, Inc.
* All rights reserved.
@ -29,25 +29,32 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
struct Struct_Obj_Entry;
struct ps_strings;
#pragma weak _DYNAMIC
extern int _DYNAMIC;
#pragma weak _DYNAMIC
typedef void (*fptr)(void);
extern void _init(void);
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void __sparc64_sigtramp_setup(void);
extern void __sparc64_utrap_setup(void);
extern void _start(char **, void (*)(void), struct Struct_Obj_Entry *,
struct ps_strings *);
extern void __sparc_sigtramp_setup(void);
extern void __sparc_utrap_setup(void);
#ifdef GCRT
extern void _mcleanup(void);
@ -59,9 +66,30 @@ extern int etext;
char **environ;
const char *__progname = "";
/*
* Grab %g1 before it gets used for anything by the compiler.
* Sparc ELF psABI specifies a termination routine (if any) will be in
* %g1
*/
static __inline fptr
get_term(void)
{
fptr retval;
#if 0
#ifdef __GNUC__
__asm__ volatile("mov %%g1,%0" : "=r"(retval));
#else
retval = (fptr)0; /* XXXX Fix this for other compilers */
#endif
#else
retval = (fptr)0; /* XXXX temporary */
#endif
return(retval);
}
/* The entry function. */
/*
*
* %o0 holds ps_strings pointer. For Solaris compat and/or shared
* libraries, if %g1 is not 0, it is a routine to pass to atexit().
* (By passing the pointer in the usual argument register, we avoid
@ -70,26 +98,20 @@ const char *__progname = "";
* Note: kernel may (is not set in stone yet) pass ELF aux vector in %o1,
* but for now we do not use it here.
*/
/* ARGSUSED */
void
_start(char **ap,
void (*cleanup)(void), /* from shared loader */
struct Struct_Obj_Entry *obj, /* from shared loader */
struct ps_strings *ps_strings)
_start(char **ap, void (*cleanup)(void), struct Struct_Obj_Entry *obj __unused,
struct ps_strings *ps_strings __unused)
{
void (*term)(void);
int argc;
char **argv;
char **env;
const char *s;
#if 0
void (*term)(void);
/* Grab %g1 before it gets used for anything by the compiler. */
/* Sparc ELF psABI specifies a termination routine (if any) will be in
%g1 */
__asm__ volatile("mov %%g1,%0" : "=r"(term));
#endif
term = get_term();
argc = * (long *) ap;
argc = *(long *)(void *)ap;
argv = ap + 1;
env = ap + 2 + argc;
environ = env;
@ -102,14 +124,13 @@ _start(char **ap,
__sparc_sigtramp_setup();
__sparc_utrap_setup();
#if 0
/*
* If the kernel or a shared library wants us to call
* a termination function, arrange to do so.
*/
if (term)
atexit(term);
#endif
if (&_DYNAMIC != NULL)
atexit(cleanup);