mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-05 11:11:04 +00:00
74bd2300b5
2001-10-02 Jakub Jelinek <jakub@redhat.com> H.J. Lu <hjl@gnu.org> * configure.in (libc_cv_gcc_static_libgcc): Set to -static-libgcc if gcc supports this flag. (EXPORT_UNWIND_FIND_FDE): Define unless target configure disables it. (gcc3): Allow glibc to be compiled with gcc 3.x. * config.h.in (EXPORT_UNWIND_FIND_FDE): Add. * config.make.in (static-libgcc, unwind-find-fde): Add. * Makerules (build-shlib-helper, build-module-helper): Use it. * scripts/versions.awk: Make sure GLIBC_ versions come first. * elf/soinit.c (__libc_global_ctors): Set tbases and dbases if necessary. (_fini): Call __deregister_frame_info_bases if __register_frame_info_bases was used to register. * elf/Versions (__register_frame_info, __deregister_frame_info): Add for GLIBC_2.0. (__register_frame_info_bases, __register_frame_info_table_bases, __deregister_frame_info_bases, _Unwind_Find_FDE): Add for GLIBC_2.2.5. * elf/Makefile (routines): Add unwind-dw2-fde. (shared-only-routines): Add unwind-dw2-fde. * sysdeps/alpha/gccframe.h: New file. * sysdeps/arm/gccframe.h: New file. * sysdeps/generic/framestate.c: New file. * sysdeps/generic/dwarf2.h: New file. * sysdeps/generic/gccframe.h (struct object): Update from gcc 3.0. * sysdeps/generic/unwind-dw2-fde.c: New file. * sysdeps/unix/sysv/linux/ia64/unwind-dw2-fde.c: New file. * sysdeps/generic/unwind-dw2-fde.h: New file. * sysdeps/generic/unwind-dw2.c: New file. * sysdeps/generic/unwind-pe.h: New file. * sysdeps/generic/unwind.h: New file. * sysdeps/hppa/gccframe.h: New file. * sysdeps/i386/gccframe.h: New file. * sysdeps/m68k/gccframe.h: New file. * sysdeps/mips/gccframe.h: New file. * sysdeps/powerpc/gccframe.h: New file. * sysdeps/s390/gccframe.h: New file. * sysdeps/sh/gccframe.h: New file. * sysdeps/sparc/gccframe.h: New file. * sysdeps/vax/gccframe.h: New file. * sysdeps/unix/sysv/linux/configure.in (libc_cv_gcc_unwind_find_fde): Set on all architectures except ia64. * sysdeps/mach/hurd/configure.in (libc_cv_gcc_unwind_find_fde): Set for i386. * sysdeps/mach/hurd/i386/Versions (__register_frame_info, __deregister_frame_info): Move to elf/Versions. * sysdeps/unix/sysv/linux/m68k/Versions: Likewise. * sysdeps/unix/sysv/linux/arm/Versions: Likewise. * sysdeps/unix/sysv/linux/alpha/Versions: Likewise. * sysdeps/unix/sysv/linux/i386/Versions: Likewise. * sysdeps/unix/sysv/linux/mips/Versions: Likewise. * sysdeps/unix/sysv/linux/powerpc/Versions: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/Versions: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/Versions: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/Versions: Likewise. * sysdeps/mach/hurd/i386/Makefile (sysdep-routines): Add framestate. * sysdeps/unix/sysv/linux/arm/Makefile: Likewise. * sysdeps/unix/sysv/linux/alpha/Makefile: Likewise. * sysdeps/unix/sysv/linux/i386/Makefile: Likewise. * sysdeps/unix/sysv/linux/m68k/Makefile: Likewise. * sysdeps/unix/sysv/linux/mips/Makefile: Likewise. * sysdeps/unix/sysv/linux/powerpc/Makefile: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/Makefile: Likewise. * sysdeps/unix/sysv/linux/sparc/Makefile: Likewise. * sysdeps/unix/sysv/linux/ia64/ldd-rewrite.sed: New file. * sysdeps/unix/sysv/linux/s390/ldd-rewrite.sed: New file. * sysdeps/generic/strnlen.c: New file.
192 lines
7.0 KiB
C
192 lines
7.0 KiB
C
/* Exception handling and frame unwind runtime interface routines.
|
|
Copyright (C) 2001 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* This is derived from the C++ ABI for IA-64. Where we diverge
|
|
for cross-architecture compatibility are noted with "@@@". */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Level 1: Base ABI */
|
|
|
|
/* @@@ The IA-64 ABI uses uint64 throughout. Most places this is
|
|
inefficient for 32-bit and smaller machines. */
|
|
typedef unsigned _Unwind_Word __attribute__((__mode__(__word__)));
|
|
typedef signed _Unwind_Sword __attribute__((__mode__(__word__)));
|
|
typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
|
|
|
|
/* @@@ The IA-64 ABI uses a 64-bit word to identify the producer and
|
|
consumer of an exception. We'll go along with this for now even on
|
|
32-bit machines. We'll need to provide some other option for
|
|
16-bit machines and for machines with > 8 bits per byte. */
|
|
typedef unsigned _Unwind_Exception_Class __attribute__((__mode__(__DI__)));
|
|
|
|
/* The unwind interface uses reason codes in several contexts to
|
|
identify the reasons for failures or other actions. */
|
|
typedef enum
|
|
{
|
|
_URC_NO_REASON = 0,
|
|
_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
|
|
_URC_FATAL_PHASE2_ERROR = 2,
|
|
_URC_FATAL_PHASE1_ERROR = 3,
|
|
_URC_NORMAL_STOP = 4,
|
|
_URC_END_OF_STACK = 5,
|
|
_URC_HANDLER_FOUND = 6,
|
|
_URC_INSTALL_CONTEXT = 7,
|
|
_URC_CONTINUE_UNWIND = 8
|
|
} _Unwind_Reason_Code;
|
|
|
|
|
|
/* The unwind interface uses a pointer to an exception header object
|
|
as its representation of an exception being thrown. In general, the
|
|
full representation of an exception object is language- and
|
|
implementation-specific, but it will be prefixed by a header
|
|
understood by the unwind interface. */
|
|
|
|
struct _Unwind_Exception;
|
|
|
|
typedef void (*_Unwind_Exception_Cleanup_Fn) (_Unwind_Reason_Code,
|
|
struct _Unwind_Exception *);
|
|
|
|
struct _Unwind_Exception
|
|
{
|
|
_Unwind_Exception_Class exception_class;
|
|
_Unwind_Exception_Cleanup_Fn exception_cleanup;
|
|
_Unwind_Word private_1;
|
|
_Unwind_Word private_2;
|
|
|
|
/* @@@ The IA-64 ABI says that this structure must be double-word aligned.
|
|
Taking that literally does not make much sense generically. Instead we
|
|
provide the maximum alignment required by any type for the machine. */
|
|
} __attribute__((__aligned__));
|
|
|
|
|
|
/* The ACTIONS argument to the personality routine is a bitwise OR of one
|
|
or more of the following constants. */
|
|
typedef int _Unwind_Action;
|
|
|
|
#define _UA_SEARCH_PHASE 1
|
|
#define _UA_CLEANUP_PHASE 2
|
|
#define _UA_HANDLER_FRAME 4
|
|
#define _UA_FORCE_UNWIND 8
|
|
|
|
/* This is an opaque type used to refer to a system-specific data
|
|
structure used by the system unwinder. This context is created and
|
|
destroyed by the system, and passed to the personality routine
|
|
during unwinding. */
|
|
struct _Unwind_Context;
|
|
|
|
/* Raise an exception, passing along the given exception object. */
|
|
extern _Unwind_Reason_Code _Unwind_RaiseException (struct _Unwind_Exception *);
|
|
|
|
/* Raise an exception for forced unwinding. */
|
|
|
|
typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
|
|
(int, _Unwind_Action, _Unwind_Exception_Class,
|
|
struct _Unwind_Exception *, struct _Unwind_Context *, void *);
|
|
|
|
extern _Unwind_Reason_Code _Unwind_ForcedUnwind (struct _Unwind_Exception *,
|
|
_Unwind_Stop_Fn,
|
|
void *);
|
|
|
|
/* Helper to invoke the exception_cleanup routine. */
|
|
extern void _Unwind_DeleteException (struct _Unwind_Exception *);
|
|
|
|
/* Resume propagation of an existing exception. This is used after
|
|
e.g. executing cleanup code, and not to implement rethrowing. */
|
|
extern void _Unwind_Resume (struct _Unwind_Exception *);
|
|
|
|
/* These functions are used for communicating information about the unwind
|
|
context (i.e. the unwind descriptors and the user register state) between
|
|
the unwind library and the personality routine and landing pad. Only
|
|
selected registers maybe manipulated. */
|
|
|
|
extern _Unwind_Word _Unwind_GetGR (struct _Unwind_Context *, int);
|
|
extern void _Unwind_SetGR (struct _Unwind_Context *, int, _Unwind_Word);
|
|
|
|
extern _Unwind_Ptr _Unwind_GetIP (struct _Unwind_Context *);
|
|
extern void _Unwind_SetIP (struct _Unwind_Context *, _Unwind_Ptr);
|
|
|
|
extern void *_Unwind_GetLanguageSpecificData (struct _Unwind_Context *);
|
|
|
|
extern _Unwind_Ptr _Unwind_GetRegionStart (struct _Unwind_Context *);
|
|
|
|
|
|
/* The personality routine is the function in the C++ (or other language)
|
|
runtime library which serves as an interface between the system unwind
|
|
library and language-specific exception handling semantics. It is
|
|
specific to the code fragment described by an unwind info block, and
|
|
it is always referenced via the pointer in the unwind info block, and
|
|
hence it has no ABI-specified name.
|
|
|
|
Note that this implies that two different C++ implementations can
|
|
use different names, and have different contents in the language
|
|
specific data area. Moreover, that the language specific data
|
|
area contains no version info because name of the function invoked
|
|
provides more effective versioning by detecting at link time the
|
|
lack of code to handle the different data format. */
|
|
|
|
typedef _Unwind_Reason_Code (*_Unwind_Personality_Fn)
|
|
(int, _Unwind_Action, _Unwind_Exception_Class,
|
|
struct _Unwind_Exception *, struct _Unwind_Context *);
|
|
|
|
/* @@@ The following alternate entry points are for setjmp/longjmp
|
|
based unwinding. */
|
|
|
|
struct SjLj_Function_Context;
|
|
extern void _Unwind_SjLj_Register (struct SjLj_Function_Context *);
|
|
extern void _Unwind_SjLj_Unregister (struct SjLj_Function_Context *);
|
|
|
|
extern _Unwind_Reason_Code _Unwind_SjLj_RaiseException
|
|
(struct _Unwind_Exception *);
|
|
extern _Unwind_Reason_Code _Unwind_SjLj_ForcedUnwind
|
|
(struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
|
|
extern void _Unwind_SjLj_Resume (struct _Unwind_Exception *);
|
|
|
|
/* @@@ The following provide access to the base addresses for text
|
|
and data-relative addressing in the LDSA. In order to stay link
|
|
compatible with the standard ABI for IA-64, we inline these. */
|
|
|
|
#ifdef __ia64__
|
|
#include <stdlib.h>
|
|
|
|
static inline _Unwind_Ptr
|
|
_Unwind_GetDataRelBase (struct _Unwind_Context *_C)
|
|
{
|
|
/* The GP is stored in R1. */
|
|
return _Unwind_GetGR (_C, 1);
|
|
}
|
|
|
|
static inline _Unwind_Ptr
|
|
_Unwind_GetTextRelBase (struct _Unwind_Context *_C)
|
|
{
|
|
abort ();
|
|
return 0;
|
|
}
|
|
#else
|
|
extern _Unwind_Ptr _Unwind_GetDataRelBase (struct _Unwind_Context *);
|
|
extern _Unwind_Ptr _Unwind_GetTextRelBase (struct _Unwind_Context *);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|