87 lines
1.9 KiB
C++
87 lines
1.9 KiB
C++
/*
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* Copyright 2006-2010, Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Axel Dörfler, [email protected]
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* Oliver Tappe, [email protected]
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*/
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#include <libroot_private.h>
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#include <OS.h>
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#include <image.h>
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#include <string.h>
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#ifdef _BEOS_R5_COMPATIBLE_
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bool __gR5Compatibility = false;
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addr_t __gNetworkStart;
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addr_t __gNetworkEnd;
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static void
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set_own_image_location(image_id id)
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{
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image_info info;
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if (get_image_info(id, &info) == B_OK) {
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__gNetworkStart = (addr_t)min_c(info.text, info.data);
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__gNetworkEnd = min_c((addr_t)info.text + info.text_size,
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(addr_t)info.data + info.data_size);
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}
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}
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extern "C" void
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initialize_before(image_id our_image)
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{
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// determine if we have to run in BeOS compatibility mode
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// get image of executable
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image_info info;
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uint32 cookie = 0;
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if (get_next_image_info(B_CURRENT_TEAM, (int32*)&cookie, &info) != B_OK)
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return;
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if (get_image_symbol(info.id, "__gHaikuStartupCode", B_SYMBOL_TYPE_DATA,
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NULL) == B_OK) {
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// we were linked on/for Haiku
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return;
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}
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// We're using the BeOS startup code, check if BONE libraries are in
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// use, and if not, enable the BeOS R5 compatibility layer.
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// As dependencies to network libraries may be "hidden" in libraries, we
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// may have to scan not only the executable, but every loaded image.
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int enable = 0;
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uint32 crumble;
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const char *name;
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do {
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crumble = 0;
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while (__get_next_image_dependency(info.id, &crumble, &name) == B_OK) {
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if (!strcmp(name, "libbind.so")
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|| !strcmp(name, "libsocket.so")
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|| !strcmp(name, "libbnetapi.so")
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|| !strcmp(name, "libnetwork.so"))
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enable -= 2;
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else if (!strcmp(name, "libnet.so")
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|| !strcmp(name, "libnetapi.so"))
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enable++;
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}
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if (enable > 0) {
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__gR5Compatibility = true;
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set_own_image_location(our_image);
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return;
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}
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} while (enable == 0
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&& get_next_image_info(B_CURRENT_TEAM, (int32*)&cookie, &info) == B_OK);
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}
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#endif
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