Axel Dörfler
b8000952ca
This has almost the same layout as in BeOS - the only difference is crt0.o which is what is usually provided by crti.o/crtbegin.o/crtend.o/crtn.o. When we want to move to GCC's crtbegin/end code, we have to introduce crti.o and crtn.o. This is required because the crtbegin/end stuff assumes to be inserted between a function start (crti.o) and a function end (crtn.o) - which can only be achieved with assembly, and is therefore platform dependent. start_dyn.c is used for executables and calls main() (among other). init_term_dyn.c functions are called from the .init/.fini sections and search for B_INIT/TERM_BEFORE/AFTER_FUNCTION_NAME, and execute them if they are present. Both use BeOS compatible call scheme but add parameters to the end. lib0.c is no longer needed, because init_term.c/crt0.c replace its functionality. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2448 a95241bf-73f2-0310-859d-f6bbb57e9c96
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/*
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** Copyright 2003, Axel Dörfler, [email protected]. All rights reserved.
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** Distributed under the terms of the OpenBeOS License.
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*/
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#include <user_runtime.h>
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#include <image.h>
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#include "init_term_dyn.h"
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/* These functions are called from _init()/_fini() (in crti.S, crtn.S)
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* _init/fini_before() is called before crtbegin/end code is executed,
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* _init/fini_after() after this.
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* crtbegin contains code to initialize all global constructors and
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* probably other GCC related things.
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*/
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void
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_init_before(image_id id, struct uspace_program_args *args)
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{
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void (*before)(image_id, struct uspace_program_args *);
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if (args->rld_export->get_image_symbol(id, B_INIT_BEFORE_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT, (void **)&before) == B_OK)
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before(id, args);
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}
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void
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_init_after(image_id id, struct uspace_program_args *args)
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{
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void (*after)(image_id, struct uspace_program_args *);
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if (args->rld_export->get_image_symbol(id, B_INIT_AFTER_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT, (void **)&after) == B_OK)
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after(id, args);
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}
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void
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_term_before(image_id id, struct uspace_program_args *args)
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{
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void (*before)(image_id, struct uspace_program_args *);
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if (args->rld_export->get_image_symbol(id, B_TERM_BEFORE_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT, (void **)&before) == B_OK)
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before(id, args);
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}
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void
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_term_after(image_id id, struct uspace_program_args *args)
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{
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void (*after)(image_id, struct uspace_program_args *);
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if (args->rld_export->get_image_symbol(id, B_TERM_AFTER_FUNCTION_NAME, B_SYMBOL_TYPE_TEXT, (void **)&after) == B_OK)
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after(id, args);
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}
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