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* lib/pseudo-reloc.c: New file.

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* lib/_cygwin_crt0_common.cc: Perform pseudo-relocs during initialization of
cygwin binary (.exe or .dll).
This commit is contained in:
Christopher Faylor 2002-12-09 22:49:12 +00:00
parent 97cc22ad06
commit b862c42198
4 changed files with 101 additions and 0 deletions
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6
winsup/cygwin/ChangeLog
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@ -1,3 +1,9 @@
2002-12-02 Egor Duda <deo@logos-m.ru>
* lib/pseudo-reloc.c: New file.
* lib/_cygwin_crt0_common.cc: Perform pseudo-relocs during
initialization of cygwin binary (.exe or .dll).
2002-12-06 Christopher Faylor <cgf@redhat.com> 2002-12-06 Christopher Faylor <cgf@redhat.com>
* cygwin.din: Reflect name change from strtodf to strtof. Export * cygwin.din: Reflect name change from strtodf to strtof. Export

3
winsup/cygwin/lib/_cygwin_crt0_common.cc
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@ -26,6 +26,7 @@ int cygwin_attach_noncygwin_dll (HMODULE, MainFunc);
int main (int, char **, char **); int main (int, char **, char **);
struct _reent *_impure_ptr; struct _reent *_impure_ptr;
int _fmode; int _fmode;
void _pei386_runtime_relocator ();
/* Set up pointers to various pieces so the dll can then use them, /* Set up pointers to various pieces so the dll can then use them,
and then jump to the dll. */ and then jump to the dll. */
@ -94,6 +95,8 @@ _cygwin_crt0_common (MainFunc f, per_process *u)
u->data_end = &_data_end__; u->data_end = &_data_end__;
u->bss_start = &_bss_start__; u->bss_start = &_bss_start__;
u->bss_end = &_bss_end__; u->bss_end = &_bss_end__;
_pei386_runtime_relocator ();
return 1; return 1;
} }
} /* "C" */ } /* "C" */

46
winsup/cygwin/lib/pseudo-reloc.c Normal file
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@ -0,0 +1,46 @@
/* pseudo-reloc.c
Written by Egor Duda <deo@logos-m.ru>
THIS SOFTWARE IS NOT COPYRIGHTED
This source code is offered for use in the public domain. You may
use, modify or distribute it freely.
This code is distributed in the hope that it will be useful but
WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
DISCLAMED. This includes but is not limited to warrenties of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <windows.h>
extern char __RUNTIME_PSEUDO_RELOC_LIST__;
extern char __RUNTIME_PSEUDO_RELOC_LIST_END__;
extern char _image_base__;
typedef struct
{
DWORD addend;
DWORD target;
}
runtime_pseudo_reloc;
void
do_pseudo_reloc (void* start, void* end, void* base)
{
DWORD reloc_target;
runtime_pseudo_reloc* r;
for (r = (runtime_pseudo_reloc*) start; r < (runtime_pseudo_reloc*) end; r++)
{
reloc_target = (DWORD) base + r->target;
*((DWORD*) reloc_target) += r->addend;
}
}
void
_pei386_runtime_relocator ()
{
do_pseudo_reloc (&__RUNTIME_PSEUDO_RELOC_LIST__,
&__RUNTIME_PSEUDO_RELOC_LIST_END__,
&_image_base__);
}

46
winsup/cygwin/pseudo-reloc.cc Normal file
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@ -0,0 +1,46 @@
/* pseudo-reloc.c
Written by Egor Duda <deo@logos-m.ru>
THIS SOFTWARE IS NOT COPYRIGHTED
This source code is offered for use in the public domain. You may
use, modify or distribute it freely.
This code is distributed in the hope that it will be useful but
WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
DISCLAMED. This includes but is not limited to warrenties of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <windows.h>
extern char __RUNTIME_PSEUDO_RELOC_LIST__;
extern char __RUNTIME_PSEUDO_RELOC_LIST_END__;
extern char _image_base__;
typedef struct
{
DWORD addend;
DWORD target;
}
runtime_pseudo_reloc;
void
do_pseudo_reloc (void* start, void* end, void* base)
{
DWORD reloc_target;
runtime_pseudo_reloc* r;
for (r = (runtime_pseudo_reloc*) start; r < (runtime_pseudo_reloc*) end; r++)
{
reloc_target = (DWORD) base + r->target;
*((DWORD*) reloc_target) += r->addend;
}
}
void
_pei386_runtime_relocator ()
{
do_pseudo_reloc (&__RUNTIME_PSEUDO_RELOC_LIST__,
&__RUNTIME_PSEUDO_RELOC_LIST_END__,
&_image_base__);
}