0c85bd054e
the per-root-image breadth-first sorted image array. Instead we have a
per-image hook function to resolve the symbols. The default function
uses the sLoadedImages list directly, which is breadth-first sorted
anyway. There's also a BeOS function for old-style symbol resolution
and one for add-ons, which lacks a proper implementation yet (just
uses old-style ATM).
* Made the dl*() functions POSIX compliant:
- dlopen() does no longer use load_add_on(), but loads the object as a
library. It also properly supports a NULL name, now -- the previous
"_APP_" work-around did only work, if this soname was set on the
program (unlikely for programs using this API).
- Implemented RTLD_{GLOBAL,LOCAL}.
- dlsym() looks up symbols properly now, i.e. not just in the given
image, but breadth-first for an actual image or in load order for
the global scope. It also supports the not-quite POSIX RTLD_DEFAULT
and RTLD_NEXT extensions. Our RTLD_NEXT finds more symbols than in
Linux (also in later dlopen()ed libraries), but that should be fine.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28568 a95241bf-73f2-0310-859d-f6bbb57e9c96
68 lines
1.2 KiB
C
68 lines
1.2 KiB
C
/*
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* Copyright 2003-2006, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2002, Manuel J. Petit. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#include "runtime_loader_private.h"
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// exported via the rld_export structure in user space program arguments
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static image_id
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export_load_add_on(char const *name, uint32 flags)
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{
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void* handle;
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return load_library(name, flags, true, &handle);
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}
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static status_t
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export_unload_add_on(image_id id)
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{
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return unload_library(NULL, id, true);
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}
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static image_id
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export_load_library(char const *name, uint32 flags, void **_handle)
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{
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return load_library(name, flags, false, _handle);
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}
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static status_t
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export_unload_library(void* handle)
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{
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return unload_library(handle, -1, false);
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}
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struct rld_export gRuntimeLoader = {
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// dynamic loading support API
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export_load_add_on,
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export_unload_add_on,
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export_load_library,
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export_unload_library,
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get_symbol,
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get_library_symbol,
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get_nth_symbol,
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test_executable,
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get_next_image_dependency,
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elf_reinit_after_fork,
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NULL, // call_atexit_hooks_for_range
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terminate_program
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};
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void
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rldexport_init(void)
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{
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gRuntimeLoader.program_args = gProgramArgs;
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}
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