/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#if defined(__DYNAMIC__)
#include "mach-o/dyld.h" /* defines _dyld_lookup_and_bind() */
-#define STRINGIFY(a) # a
-#define DECLARE_VAR(var, type) \
+#define DECLARE_VAR(var, type) \
static type * var ## _pointer = 0
-#define SETUP_VAR(var) \
- if ( var ## _pointer == 0) { \
- _dyld_lookup_and_bind( STRINGIFY(_ ## var), \
- (unsigned long *) & var ## _pointer, 0); \
- }
+#define DECLARE_PROGNAME(var, type) \
+ static type * var ## _pointer = 0; \
+ static type _priv_ ## var = 0
#define USE_VAR(var) (var ## _pointer)
#else
#define DECLARE_VAR(var, type) extern type var
-#define SETUP_VAR(var)
+#define DECLARE_PROGNAME(var, type) DECLARE_VAR(var, type)
#define USE_VAR(var) (& var)
#endif
+DECLARE_VAR(NXArgv, char **);
+DECLARE_VAR(NXArgc, int);
+DECLARE_VAR(environ, char **);
+DECLARE_VAR(_mh_execute_header, struct mach_header);
+DECLARE_PROGNAME(__progname, char *);
+
char ***_NSGetArgv(void) {
- DECLARE_VAR(NXArgv, char **);
- SETUP_VAR(NXArgv);
return(USE_VAR(NXArgv));
}
int *_NSGetArgc(void) {
- DECLARE_VAR(NXArgc, int);
- SETUP_VAR(NXArgc);
return(USE_VAR(NXArgc));
}
char ***_NSGetEnviron(void) {
- DECLARE_VAR(environ, char **);
- SETUP_VAR(environ);
return(USE_VAR(environ));
}
char **_NSGetProgname(void) {
- DECLARE_VAR(__progname, char *);
- SETUP_VAR(__progname);
return(USE_VAR(__progname));
}
struct mach_header *_NSGetMachExecuteHeader(void) {
- DECLARE_VAR(_mh_execute_header, struct mach_header);
- SETUP_VAR(_mh_execute_header);
return(USE_VAR(_mh_execute_header));
}
+#if __DYNAMIC__
+struct ProgramVars
+{
+ void* mh;
+ int* NXArgcPtr;
+ char*** NXArgvPtr;
+ char*** environPtr;
+ char** __prognamePtr;
+};
+
+
+#define SUPPORT_PRE_GM_10_5_EXECUTABLES (__ppc__ || __i386__)
+
+
+/*
+ * dyld calls libSystem_initializer() and passes it a ProgramVars struct containing pointers to the
+ * main executable's NXArg* global variables. libSystem_initializer() calls __libc_init() which calls
+ * _program_vars_init() passing the ProgramVars parameter.
+ */
+void __attribute__((visibility("hidden")))
+_program_vars_init(const struct ProgramVars* vars) {
+#if SUPPORT_PRE_GM_10_5_EXECUTABLES
+ // to support transitional 10.5 main executables that don't have extended __dyld section and instead call _NSSetProgramVars,
+ // don't overwrite values set by _NSSetProgramVars()
+ if ( NXArgv_pointer != NULL )
+ return;
+#endif
+ NXArgv_pointer = vars->NXArgvPtr;
+ NXArgc_pointer = vars->NXArgcPtr;
+ environ_pointer = vars->environPtr;
+ __progname_pointer = vars->__prognamePtr;
+ _mh_execute_header_pointer = vars->mh;
+}
+
+#if SUPPORT_PRE_GM_10_5_EXECUTABLES
+/*
+ * This is only called by main executables built with pre 10-5 GM crt1.10.5.o. In those programs,
+ * there is no extended __dyld section, dyld cannot tell _program_vars_init() where the real program
+ * variables are, so they get temp values and are set for real here.
+ */
+void _NSSetProgramVars(int* crt_argc, char*** crt_argv, char*** crt_environ, struct mach_header* crt_mh, char** crt_progname) {
+ NXArgv_pointer = crt_argv;
+ NXArgc_pointer = crt_argc;
+ environ_pointer = crt_environ;
+ __progname_pointer = crt_progname;
+ _mh_execute_header_pointer = crt_mh;
+}
+#endif
+#endif /* __DYNAMIC__ */
+
+#if __ppc__
/*
* Fix for Radar bug 2200596 --
* EH symbol definitions for gcc 2.7.2.x implementation of
/* This is what egcs uses for its global data pointer */
void *__eh_global_dataptr = (void *)0;
+#endif /* __ppc__ */
-void *__keymgr_global[3] = { (void *)0 };
projects / apple / libc.git / blobdiff