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author | Rainer Orth <ro@gcc.gnu.org> | 2011-08-05 14:37:48 +0000 |
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committer | Rainer Orth <ro@gcc.gnu.org> | 2011-08-05 14:37:48 +0000 |
commit | 201cdb743879cbffd38c53d8ebf85fa9fff1e0e4 (patch) | |
tree | 80376027cf518687afe9d3c715d908e42d42c267 /libgcc/unwind-generic.h | |
parent | d50f4827c7062e3247baf493e646c365114c28cd (diff) | |
download | gcc-201cdb743879cbffd38c53d8ebf85fa9fff1e0e4.zip gcc-201cdb743879cbffd38c53d8ebf85fa9fff1e0e4.tar.gz gcc-201cdb743879cbffd38c53d8ebf85fa9fff1e0e4.tar.bz2 |
Makefile.in (UNWIND_H): Remove.
gcc:
* Makefile.in (UNWIND_H): Remove.
(LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED): Move to
../libgcc/Makefile.in.
(LIBUNWIND, SHLIBUNWIND_LINK, SHLIBUNWIND_INSTALL): Likewise.
(LIBUNWINDDEP): Remove.
(libgcc-support): Remove LIB2ADDEH, $(srcdir)/emutls.c dependencies.
(libgcc.mvars): Remove LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED,
LIBUNWIND, SHLIBUNWIND_LINK, SHLIBUNWIND_INSTALL.
(stmp-int-hdrs): Remove $(UNWIND_H) dependency.
Don't copy $(UNWIND_H).
* config.gcc (ia64*-*-linux*): Remove with_system_libunwind
handling.
* configure.ac (GCC_CHECK_UNWIND_GETIPINFO): Remove.
* aclocal.m4: Regenerate.
* configure: Regenerate.
* emutls.c, unwind-c.c, unwind-compat.c, unwind-compat.h,
unwind-dw2-fde-compat.c, unwind-dw2-fde-glibc.c, unwind-dw2-fde.c,
unwind-dw2-fde.h, unwind-dw2.c, unwind-dw2.h, unwind-generic.h,
unwind-pe.h, unwind-sjlj.c, unwind.inc: Move to ../libgcc.
* unwind-dw2-fde-darwin.c: Move to ../libgcc/config.
* config/arm/libunwind.S, config/arm/pr-support.c,
config/arm/unwind-arm.c, config/arm/unwind-arm.h: Move to
../libgcc/config/arm.
* config/arm/t-bpabi (UNWIND_H, LIB2ADDEH): Remove.
* config/arm/t-symbian (UNWIND_H, LIB2ADDEH): Remove.
* config/frv/t-frv ($(T)frvbegin$(objext)): Use
$(srcdir)/../libgcc to refer to unwind-dw2-fde.h.
($(T)frvend$(objext)): Likewise.
* config/ia64/t-glibc (LIB2ADDEH): Remove.
* config/ia64/t-glibc-libunwind: Move to ../libgcc/config/ia64.
* config/ia64/fde-glibc.c, config/ia64/fde-vms.c,
config/ia64/unwind-ia64.c, config/ia64/unwind-ia64.h: Move to
../libgcc/config/ia64.
* config/ia64/t-hpux (LIB2ADDEH): Remove.
* config/ia64/t-ia64 (LIB2ADDEH): Remove.
* config/ia64/t-vms (LIB2ADDEH): Remove.
* config/ia64/vms.h (UNW_IVMS_MODE,
MD_UNW_COMPATIBLE_PERSONALITY_P): Remove.
* config/picochip/t-picochip (LIB2ADDEH): Remove.
* config/rs6000/aix.h (R_LR, MD_FROB_UPDATE_CONTEXT): Remove.
* config/rs6000/t-darwin (LIB2ADDEH): Remove.
* config/rs6000/darwin-fallback.c: Move to ../libgcc/config/rs6000.
* config/sh/t-sh ($(T)unwind-dw2-Os-4-200.o): Use
$(srcdir)/../libgcc to refer to unwinder sources.
* config/spu/t-spu-elf (LIB2ADDEH): Remove.
* config/t-darwin (LIB2ADDEH): Remove.
* config/t-freebsd (LIB2ADDEH): Remove.
* config/t-libunwind (LIB2ADDEH, LIB2ADDEHSTATIC): Remove.
* config/t-libunwind-elf: Move to ../libgcc/config.
* config/t-linux (LIB2ADDEH): Remove.
* config/t-sol2 (LIB2ADDEH): Remove.
* config/xtensa/t-xtensa (LIB2ADDEH): Remove.
* system.h (MD_FROB_UPDATE_CONTEXT): Poison.
gcc/po:
* EXCLUDES (unwind-c.c, unwind-dw2-fde-darwin.c)
(unwind-dw2-fde-glibc.c, unwind-dw2-fde.c, unwind-dw2-fde.h)
(unwind-dw2.c, unwind-pe.h, unwind-sjlj.c, unwind.h): Remove.
libgcc:
* Makefile.in (LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED): New
variables.
(LIBUNWIND, SHLIBUNWIND_LINK, SHLIBUNWIND_INSTALL): New variables.
(LIB2ADDEH, LIB2ADDEHSTATIC, LIB2ADDEHSHARED): Add $(srcdir)/emutls.c.
(install-unwind_h): New target.
(all): Depend on it.
* config.host (unwind_header): New variable.
(*-*-freebsd*): Set tmake_file to t-eh-dw2-dip.
(*-*-linux*, frv-*-*linux*, *-*-kfreebsd*-gnu, *-*-knetbsd*-gnu,
*-*-gnu*): Likewise, also for *-*-kopensolaris*-gnu.
(*-*-solaris2*): Add t-eh-dw2-dip to tmake_file.
(arm*-*-linux*): Add arm/t-bpabi for arm*-*-linux-*eabi.
Set unwind_header.
(arm*-*-uclinux*): Add arm/t-bpabi for arm*-*-uclinux*eabi.
Set unwind_header.
(arm*-*-eabi*, arm*-*-symbianelf*): Add arm/t-bpabi for
arm*-*-eabi*.
Add arm/t-symbian to tmake_file for arm*-*-symbianelf*.
Set unwind_header.
(ia64*-*-elf*): Add ia64/t-eh-ia64 to tmake_file.
(ia64*-*-freebsd*): Likewise.
(ia64*-*-linux*): Add ia64/t-glibc, ia64/t-eh-ia64, t-libunwind to
tmake_file.
Add t-libunwind-elf, ia64/t-glibc-libunwind unless
$with_system_libunwind.
(ia64*-*-hpux*): Set tmake_file.
(ia64-hp-*vms*): Add ia64/t-eh-ia64 to tmake_file.
(picochip-*-*): Set tmake_file.
(rs6000-ibm-aix4.[3456789]*, powerpc-ibm-aix4.[3456789]*): Set
md_unwind_header.
(rs6000-ibm-aix5.1.*, powerpc-ibm-aix5.1.*): Likewise.
(rs6000-ibm-aix[56789].*, powerpc-ibm-aix[56789].*): Likewise.
(s390x-ibm-tpf*): Add t-eh-dw2-dip to tmake_file.
(xtensa*-*-elf*): Set tmake_file.
(xtensa*-*-linux*): Likewise.
* configure.ac: Include ../config/unwind_ipinfo.m4.
Call GCC_CHECK_UNWIND_GETIPINFO.
Link unwind.h to $unwind_header.
* configure: Regenerate.
* emutls.c, unwind-c.c, unwind-compat.c, unwind-compat.h,
unwind-dw2-fde-compat.c, unwind-dw2-fde-dip.c, unwind-dw2-fde.c,
unwind-dw2-fde.h, unwind-dw2.c, unwind-dw2.h, unwind-generic.h,
unwind-pe.h, unwind-sjlj.c, unwind.inc: New files.
* config/unwind-dw2-fde-darwin.c: New file.
* config/arm/libunwind.S, config/arm/pr-support.c,
config/arm/t-bpabi, config/arm/t-symbian, config/arm/unwind-arm.c,
config/arm/unwind-arm.h,: New files.
* config/ia64/fde-glibc.c, config/ia64/fde-vms.c,
config/ia64/t-eh-ia64, config/ia64/t-glibc,
config/ia64/t-glibc-libunwind, config/ia64/t-hpux,
config/ia64/t-vms, config/ia64/unwind-ia64.c,
config/ia64/unwind-ia64.h: New files.
* config/picochip/t-picochip: New file.
* config/rs6000/aix-unwind.h, config/rs6000/darwin-fallback.c: New
files.
* config/rs6000/t-darwin (LIB2ADDEH): Set.
* config/s390/t-tpf (LIB2ADDEH): Remove.
* config/t-darwin (LIB2ADDEH): Set.
* config/t-eh-dw2-dip: New file.
* config/t-libunwind, config/t-libunwind-elf: New files.
* config/t-sol2 (LIB2ADDEH): Remove.
* config/xtensa/t-xtensa: New file.
gcc/ada:
* gcc-interface/Makefile.in (raise-gcc.o): Search
$(srcdir)/../libgcc.
libgo:
* Makefile.am (AM_CFLAGS): Search $(srcdir)/../libgcc.
* Makefile.in: Regenerate.
libjava:
* configure.ac (GCC_UNWIND_INCLUDE): Rename to
LIBGCC_UNWIND_INCLUDE.
Point to $(multi_basedir)/./libjava/../libgcc.
* configure: Regenerate.
* Makefile.am (GCC_UNWIND_INCLUDE): Reflect this.
* Makefile.in: Regenerate.
libobjc:
* Makefile.in (INCLUDES): Search
$(srcdir)/$(MULTISRCTOP)../libgcc.
libstdc++-v3:
* acinclude.m4 (GLIBCXX_EXPORT_INCLUDES): Point TOPLEVEL_INCLUDES
to $(toplevel_srcdir)/libgcc.
* configure: Regenerate.
From-SVN: r177447
Diffstat (limited to 'libgcc/unwind-generic.h')
-rw-r--r-- | libgcc/unwind-generic.h | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/libgcc/unwind-generic.h b/libgcc/unwind-generic.h new file mode 100644 index 0000000..4ff9017 --- /dev/null +++ b/libgcc/unwind-generic.h @@ -0,0 +1,276 @@ +/* Exception handling and frame unwind runtime interface routines. + Copyright (C) 2001, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc. + + This file is part of GCC. + + GCC 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 3, or (at your option) + any later version. + + GCC 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. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +/* This is derived from the C++ ABI for IA-64. Where we diverge + for cross-architecture compatibility are noted with "@@@". */ + +#ifndef _UNWIND_H +#define _UNWIND_H + +#ifndef HIDE_EXPORTS +#pragma GCC visibility push(default) +#endif + +#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__(__unwind_word__))); +typedef signed _Unwind_Sword __attribute__((__mode__(__unwind_word__))); +#if defined(__ia64__) && defined(__hpux__) +typedef unsigned _Unwind_Ptr __attribute__((__mode__(__word__))); +#else +typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__))); +#endif +typedef unsigned _Unwind_Internal_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 +#define _UA_END_OF_STACK 16 + +/* The target can override this macro to define any back-end-specific + attributes required for the lowest-level stack frame. */ +#ifndef LIBGCC2_UNWIND_ATTRIBUTE +#define LIBGCC2_UNWIND_ATTRIBUTE +#endif + +/* 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 LIBGCC2_UNWIND_ATTRIBUTE +_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 LIBGCC2_UNWIND_ATTRIBUTE +_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 LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_Resume (struct _Unwind_Exception *); + +/* @@@ Resume propagation of a FORCE_UNWIND exception, or to rethrow + a normal exception that was handled. */ +extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *); + +/* @@@ Use unwind data to perform a stack backtrace. The trace callback + is called for every stack frame in the call chain, but no cleanup + actions are performed. */ +typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn) + (struct _Unwind_Context *, void *); + +extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_Backtrace (_Unwind_Trace_Fn, void *); + +/* 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 may be 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 _Unwind_Ptr _Unwind_GetIPInfo (struct _Unwind_Context *, int *); +extern void _Unwind_SetIP (struct _Unwind_Context *, _Unwind_Ptr); + +/* @@@ Retrieve the CFA of the given context. */ +extern _Unwind_Word _Unwind_GetCFA (struct _Unwind_Context *); + +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 LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_SjLj_RaiseException (struct _Unwind_Exception *); +extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_SjLj_ForcedUnwind (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); +extern void LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_SjLj_Resume (struct _Unwind_Exception *); +extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE +_Unwind_SjLj_Resume_or_Rethrow (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 __attribute__ ((__unused__))) +{ + abort (); + return 0; +} + +/* @@@ Retrieve the Backing Store Pointer of the given context. */ +extern _Unwind_Word _Unwind_GetBSP (struct _Unwind_Context *); +#else +extern _Unwind_Ptr _Unwind_GetDataRelBase (struct _Unwind_Context *); +extern _Unwind_Ptr _Unwind_GetTextRelBase (struct _Unwind_Context *); +#endif + +/* @@@ Given an address, return the entry point of the function that + contains it. */ +extern void * _Unwind_FindEnclosingFunction (void *pc); + +#ifndef __SIZEOF_LONG__ + #error "__SIZEOF_LONG__ macro not defined" +#endif + +#ifndef __SIZEOF_POINTER__ + #error "__SIZEOF_POINTER__ macro not defined" +#endif + + +/* leb128 type numbers have a potentially unlimited size. + The target of the following definitions of _sleb128_t and _uleb128_t + is to have efficient data types large enough to hold the leb128 type + numbers used in the unwind code. + Mostly these types will simply be defined to long and unsigned long + except when a unsigned long data type on the target machine is not + capable of storing a pointer. */ + +#if __SIZEOF_LONG__ >= __SIZEOF_POINTER__ + typedef long _sleb128_t; + typedef unsigned long _uleb128_t; +#elif __SIZEOF_LONG_LONG__ >= __SIZEOF_POINTER__ + typedef long long _sleb128_t; + typedef unsigned long long _uleb128_t; +#else +# error "What type shall we use for _sleb128_t?" +#endif + +#ifdef __cplusplus +} +#endif + +#ifndef HIDE_EXPORTS +#pragma GCC visibility pop +#endif + +#endif /* unwind.h */ |