/* crtbegin object for windows32 targets.
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/* crtbegin object for windows32 targets.
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Copyright (C) 2007, 2009 Free Software Foundation, Inc.
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Copyright (C) 2007, 2009 Free Software Foundation, Inc.
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Contributed by Danny Smith <dannysmith@users.sourceforge.net>
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Contributed by Danny Smith <dannysmith@users.sourceforge.net>
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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Software Foundation; either version 3, or (at your option) any later
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version.
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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/* Target machine header files require this define. */
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/* Target machine header files require this define. */
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#define IN_LIBGCC2
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#define IN_LIBGCC2
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#include "auto-host.h"
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#include "auto-host.h"
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#include "tconfig.h"
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#include "tconfig.h"
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#include "tsystem.h"
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#include "tsystem.h"
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#include "coretypes.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tm.h"
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#include "unwind-dw2-fde.h"
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#include "unwind-dw2-fde.h"
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#define WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <windows.h>
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#ifndef LIBGCC_SONAME
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#ifndef LIBGCC_SONAME
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#define LIBGCC_SONAME "libgcc_s.dll"
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#define LIBGCC_SONAME "libgcc_s.dll"
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#endif
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#endif
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#ifndef LIBGCJ_SONAME
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#ifndef LIBGCJ_SONAME
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#define LIBGCJ_SONAME "libgcj_s.dll"
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#define LIBGCJ_SONAME "libgcj_s.dll"
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#endif
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#endif
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/* Make the declarations weak. This is critical for
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/* Make the declarations weak. This is critical for
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_Jv_RegisterClasses because it lives in libgcj.a */
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_Jv_RegisterClasses because it lives in libgcj.a */
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extern void __register_frame_info (const void *, struct object *)
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extern void __register_frame_info (const void *, struct object *)
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TARGET_ATTRIBUTE_WEAK;
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TARGET_ATTRIBUTE_WEAK;
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extern void *__deregister_frame_info (const void *)
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extern void *__deregister_frame_info (const void *)
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TARGET_ATTRIBUTE_WEAK;
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TARGET_ATTRIBUTE_WEAK;
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extern void _Jv_RegisterClasses (const void *) TARGET_ATTRIBUTE_WEAK;
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extern void _Jv_RegisterClasses (const void *) TARGET_ATTRIBUTE_WEAK;
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#if defined(HAVE_LD_RO_RW_SECTION_MIXING)
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#if defined(HAVE_LD_RO_RW_SECTION_MIXING)
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# define EH_FRAME_SECTION_CONST const
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# define EH_FRAME_SECTION_CONST const
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#else
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#else
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# define EH_FRAME_SECTION_CONST
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# define EH_FRAME_SECTION_CONST
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#endif
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#endif
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/* Stick a label at the beginning of the frame unwind info so we can
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/* Stick a label at the beginning of the frame unwind info so we can
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register/deregister it with the exception handling library code. */
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register/deregister it with the exception handling library code. */
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#if DWARF2_UNWIND_INFO
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#if DWARF2_UNWIND_INFO
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static EH_FRAME_SECTION_CONST char __EH_FRAME_BEGIN__[]
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static EH_FRAME_SECTION_CONST char __EH_FRAME_BEGIN__[]
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__attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
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__attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
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= { };
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= { };
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static struct object obj;
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static struct object obj;
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#endif
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#endif
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#if TARGET_USE_JCR_SECTION
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#if TARGET_USE_JCR_SECTION
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static void *__JCR_LIST__[]
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static void *__JCR_LIST__[]
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__attribute__ ((unused, section(JCR_SECTION_NAME), aligned(4)))
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__attribute__ ((unused, section(JCR_SECTION_NAME), aligned(4)))
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= { };
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= { };
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#endif
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#endif
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/* Pull in references from libgcc.a(unwind-dw2-fde.o) in the
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/* Pull in references from libgcc.a(unwind-dw2-fde.o) in the
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startfile. These are referenced by a ctor and dtor in crtend.o. */
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startfile. These are referenced by a ctor and dtor in crtend.o. */
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extern void __gcc_register_frame (void);
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extern void __gcc_register_frame (void);
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extern void __gcc_deregister_frame (void);
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extern void __gcc_deregister_frame (void);
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void
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void
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__gcc_register_frame (void)
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__gcc_register_frame (void)
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{
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{
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#if DWARF2_UNWIND_INFO
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#if DWARF2_UNWIND_INFO
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/* Weak undefined symbols won't be pulled in from dlls; hence
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/* Weak undefined symbols won't be pulled in from dlls; hence
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we first test if the dll is already loaded and, if so,
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we first test if the dll is already loaded and, if so,
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get the symbol's address at run-time. If the dll is not loaded,
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get the symbol's address at run-time. If the dll is not loaded,
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fallback to weak linkage to static archive. */
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fallback to weak linkage to static archive. */
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void (*register_frame_fn) (const void *, struct object *);
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void (*register_frame_fn) (const void *, struct object *);
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HANDLE h = GetModuleHandle (LIBGCC_SONAME);
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HANDLE h = GetModuleHandle (LIBGCC_SONAME);
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if (h)
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if (h)
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register_frame_fn = (void (*) (const void *, struct object *))
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register_frame_fn = (void (*) (const void *, struct object *))
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GetProcAddress (h, "__register_frame_info");
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GetProcAddress (h, "__register_frame_info");
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else
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else
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register_frame_fn = __register_frame_info;
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register_frame_fn = __register_frame_info;
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if (register_frame_fn)
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if (register_frame_fn)
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register_frame_fn (__EH_FRAME_BEGIN__, &obj);
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register_frame_fn (__EH_FRAME_BEGIN__, &obj);
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#endif
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#endif
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#if TARGET_USE_JCR_SECTION
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#if TARGET_USE_JCR_SECTION
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if (__JCR_LIST__[0])
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if (__JCR_LIST__[0])
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{
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{
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void (*register_class_fn) (const void *);
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void (*register_class_fn) (const void *);
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HANDLE h = GetModuleHandle (LIBGCJ_SONAME);
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HANDLE h = GetModuleHandle (LIBGCJ_SONAME);
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if (h)
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if (h)
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register_class_fn = (void (*) (const void *))
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register_class_fn = (void (*) (const void *))
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GetProcAddress (h, "_Jv_RegisterClasses");
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GetProcAddress (h, "_Jv_RegisterClasses");
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else
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else
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register_class_fn = _Jv_RegisterClasses;
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register_class_fn = _Jv_RegisterClasses;
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if (register_class_fn)
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if (register_class_fn)
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register_class_fn (__JCR_LIST__);
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register_class_fn (__JCR_LIST__);
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}
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}
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#endif
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#endif
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}
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}
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void
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void
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__gcc_deregister_frame (void)
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__gcc_deregister_frame (void)
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{
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{
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#if DWARF2_UNWIND_INFO
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#if DWARF2_UNWIND_INFO
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void * (*deregister_frame_fn) (const void *);
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void * (*deregister_frame_fn) (const void *);
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HANDLE h = GetModuleHandle (LIBGCC_SONAME);
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HANDLE h = GetModuleHandle (LIBGCC_SONAME);
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if (h)
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if (h)
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deregister_frame_fn = (void* (*) (const void *))
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deregister_frame_fn = (void* (*) (const void *))
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GetProcAddress (h, "__deregister_frame_info");
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GetProcAddress (h, "__deregister_frame_info");
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else
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else
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deregister_frame_fn = __deregister_frame_info;
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deregister_frame_fn = __deregister_frame_info;
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if (deregister_frame_fn)
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if (deregister_frame_fn)
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deregister_frame_fn (__EH_FRAME_BEGIN__);
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deregister_frame_fn (__EH_FRAME_BEGIN__);
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#endif
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#endif
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}
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}
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