Date: Mon, 11 Mar 2019 18:45:37 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r345018 - in head/contrib/llvm/projects/libunwind: . include include/mach-o src Message-ID: <201903111845.x2BIjbml042773@repo.freebsd.org>
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Author: dim Date: Mon Mar 11 18:45:36 2019 New Revision: 345018 URL: https://svnweb.freebsd.org/changeset/base/345018 Log: Merge LLVM libunwind trunk r351319, from just before upstream's release_80 branch point. Afterwards, we will merge the rest of the changes in the actual release_80 branch. PR: 236062 MFC after: 1 month X-MFC-With: r344779 Added: - copied unchanged from r344967, vendor/llvm-libunwind/dist/LICENSE.TXT - copied unchanged from r344967, vendor/llvm-libunwind/dist/src/RWMutex.hpp - copied unchanged from r344967, vendor/llvm-libunwind/dist/src/Unwind-seh.cpp Directory Properties: head/contrib/llvm/projects/libunwind/LICENSE.TXT (props changed) head/contrib/llvm/projects/libunwind/src/RWMutex.hpp (props changed) head/contrib/llvm/projects/libunwind/src/Unwind-seh.cpp (props changed) Deleted: head/contrib/llvm/projects/libunwind/src/unwind_ext.h Modified: head/contrib/llvm/projects/libunwind/include/__libunwind_config.h head/contrib/llvm/projects/libunwind/include/libunwind.h head/contrib/llvm/projects/libunwind/include/mach-o/compact_unwind_encoding.h head/contrib/llvm/projects/libunwind/include/unwind.h head/contrib/llvm/projects/libunwind/src/AddressSpace.hpp head/contrib/llvm/projects/libunwind/src/CompactUnwinder.hpp head/contrib/llvm/projects/libunwind/src/DwarfInstructions.hpp head/contrib/llvm/projects/libunwind/src/DwarfParser.hpp head/contrib/llvm/projects/libunwind/src/EHHeaderParser.hpp head/contrib/llvm/projects/libunwind/src/Registers.hpp head/contrib/llvm/projects/libunwind/src/Unwind-EHABI.cpp head/contrib/llvm/projects/libunwind/src/Unwind-EHABI.h head/contrib/llvm/projects/libunwind/src/Unwind-sjlj.c head/contrib/llvm/projects/libunwind/src/UnwindCursor.hpp head/contrib/llvm/projects/libunwind/src/UnwindLevel1-gcc-ext.c head/contrib/llvm/projects/libunwind/src/UnwindLevel1.c head/contrib/llvm/projects/libunwind/src/UnwindRegistersRestore.S head/contrib/llvm/projects/libunwind/src/UnwindRegistersSave.S head/contrib/llvm/projects/libunwind/src/Unwind_AppleExtras.cpp head/contrib/llvm/projects/libunwind/src/assembly.h head/contrib/llvm/projects/libunwind/src/config.h head/contrib/llvm/projects/libunwind/src/dwarf2.h head/contrib/llvm/projects/libunwind/src/libunwind.cpp head/contrib/llvm/projects/libunwind/src/libunwind_ext.h Directory Properties: head/contrib/llvm/projects/libunwind/ (props changed) Copied: head/contrib/llvm/projects/libunwind/LICENSE.TXT (from r344967, vendor/llvm-libunwind/dist/LICENSE.TXT) ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/contrib/llvm/projects/libunwind/LICENSE.TXT Mon Mar 11 18:45:36 2019 (r345018, copy of r344967, vendor/llvm-libunwind/dist/LICENSE.TXT) @@ -0,0 +1,76 @@ +============================================================================== +libunwind License +============================================================================== + +The libunwind library is dual licensed under both the University of Illinois +"BSD-Like" license and the MIT license. As a user of this code you may choose +to use it under either license. As a contributor, you agree to allow your code +to be used under both. + +Full text of the relevant licenses is included below. + +============================================================================== + +University of Illinois/NCSA +Open Source License + +Copyright (c) 2009-2019 by the contributors listed in CREDITS.TXT + +All rights reserved. + +Developed by: + + LLVM Team + + University of Illinois at Urbana-Champaign + + http://llvm.org + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal with +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimers. + + * Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimers in the + documentation and/or other materials provided with the distribution. + + * Neither the names of the LLVM Team, University of Illinois at + Urbana-Champaign, nor the names of its contributors may be used to + endorse or promote products derived from this Software without specific + prior written permission. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE +SOFTWARE. + +============================================================================== + +Copyright (c) 2009-2014 by the contributors listed in CREDITS.TXT + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. Modified: head/contrib/llvm/projects/libunwind/include/__libunwind_config.h ============================================================================== --- head/contrib/llvm/projects/libunwind/include/__libunwind_config.h Mon Mar 11 18:28:20 2019 (r345017) +++ head/contrib/llvm/projects/libunwind/include/__libunwind_config.h Mon Mar 11 18:45:36 2019 (r345018) @@ -12,65 +12,101 @@ #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \ !defined(__ARM_DWARF_EH__) -#define _LIBUNWIND_ARM_EHABI 1 -#else -#define _LIBUNWIND_ARM_EHABI 0 +#define _LIBUNWIND_ARM_EHABI #endif +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86 8 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86_64 32 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC 112 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC64 116 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64 95 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM 287 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_OR1K 32 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV 95 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS 65 +#define _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC 31 + #if defined(_LIBUNWIND_IS_NATIVE_ONLY) # if defined(__i386__) -# define _LIBUNWIND_TARGET_I386 1 +# define _LIBUNWIND_TARGET_I386 # define _LIBUNWIND_CONTEXT_SIZE 8 -# define _LIBUNWIND_CURSOR_SIZE 19 -# define _LIBUNWIND_MAX_REGISTER 9 +# define _LIBUNWIND_CURSOR_SIZE 15 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86 # elif defined(__x86_64__) # define _LIBUNWIND_TARGET_X86_64 1 -# define _LIBUNWIND_CONTEXT_SIZE 21 -# define _LIBUNWIND_CURSOR_SIZE 33 -# define _LIBUNWIND_MAX_REGISTER 17 +# if defined(_WIN64) +# define _LIBUNWIND_CONTEXT_SIZE 54 +# ifdef __SEH__ +# define _LIBUNWIND_CURSOR_SIZE 204 +# else +# define _LIBUNWIND_CURSOR_SIZE 66 +# endif +# else +# define _LIBUNWIND_CONTEXT_SIZE 21 +# define _LIBUNWIND_CURSOR_SIZE 33 +# endif +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_X86_64 +# elif defined(__powerpc64__) +# define _LIBUNWIND_TARGET_PPC64 1 +# define _LIBUNWIND_CONTEXT_SIZE 167 +# define _LIBUNWIND_CURSOR_SIZE 179 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC64 # elif defined(__ppc__) # define _LIBUNWIND_TARGET_PPC 1 # define _LIBUNWIND_CONTEXT_SIZE 117 -# define _LIBUNWIND_CURSOR_SIZE 128 -# define _LIBUNWIND_MAX_REGISTER 113 +# define _LIBUNWIND_CURSOR_SIZE 124 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_PPC # elif defined(__aarch64__) # define _LIBUNWIND_TARGET_AARCH64 1 # define _LIBUNWIND_CONTEXT_SIZE 66 -# define _LIBUNWIND_CURSOR_SIZE 78 -# define _LIBUNWIND_MAX_REGISTER 96 +# if defined(__SEH__) +# define _LIBUNWIND_CURSOR_SIZE 164 +# else +# define _LIBUNWIND_CURSOR_SIZE 78 +# endif +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM64 # elif defined(__arm__) # define _LIBUNWIND_TARGET_ARM 1 -# define _LIBUNWIND_CONTEXT_SIZE 60 -# define _LIBUNWIND_CURSOR_SIZE 67 -# define _LIBUNWIND_MAX_REGISTER 96 +# if defined(__SEH__) +# define _LIBUNWIND_CONTEXT_SIZE 42 +# define _LIBUNWIND_CURSOR_SIZE 80 +# elif defined(__ARM_WMMX) +# define _LIBUNWIND_CONTEXT_SIZE 61 +# define _LIBUNWIND_CURSOR_SIZE 68 +# else +# define _LIBUNWIND_CONTEXT_SIZE 42 +# define _LIBUNWIND_CURSOR_SIZE 49 +# endif +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_ARM # elif defined(__or1k__) # define _LIBUNWIND_TARGET_OR1K 1 # define _LIBUNWIND_CONTEXT_SIZE 16 -# define _LIBUNWIND_CURSOR_SIZE 28 -# define _LIBUNWIND_MAX_REGISTER 32 +# define _LIBUNWIND_CURSOR_SIZE 24 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_OR1K # elif defined(__riscv) # define _LIBUNWIND_TARGET_RISCV 1 # define _LIBUNWIND_CONTEXT_SIZE 64 # define _LIBUNWIND_CURSOR_SIZE 76 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_RISCV # define _LIBUNWIND_MAX_REGISTER 96 # elif defined(__mips__) # if defined(_ABIO32) && _MIPS_SIM == _ABIO32 # define _LIBUNWIND_TARGET_MIPS_O32 1 # if defined(__mips_hard_float) # define _LIBUNWIND_CONTEXT_SIZE 50 -# define _LIBUNWIND_CURSOR_SIZE 61 +# define _LIBUNWIND_CURSOR_SIZE 57 # else # define _LIBUNWIND_CONTEXT_SIZE 18 -# define _LIBUNWIND_CURSOR_SIZE 29 +# define _LIBUNWIND_CURSOR_SIZE 24 # endif # elif defined(_ABIN32) && _MIPS_SIM == _ABIN32 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 # if defined(__mips_hard_float) # define _LIBUNWIND_CONTEXT_SIZE 67 -# define _LIBUNWIND_CURSOR_SIZE 78 +# define _LIBUNWIND_CURSOR_SIZE 74 # else # define _LIBUNWIND_CONTEXT_SIZE 35 -# define _LIBUNWIND_CURSOR_SIZE 46 +# define _LIBUNWIND_CURSOR_SIZE 42 # endif # elif defined(_ABI64) && _MIPS_SIM == _ABI64 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 @@ -84,22 +120,29 @@ # else # error "Unsupported MIPS ABI and/or environment" # endif -# define _LIBUNWIND_MAX_REGISTER 66 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_MIPS +# elif defined(__sparc__) + #define _LIBUNWIND_TARGET_SPARC 1 + #define _LIBUNWIND_HIGHEST_DWARF_REGISTER _LIBUNWIND_HIGHEST_DWARF_REGISTER_SPARC + #define _LIBUNWIND_CONTEXT_SIZE 16 + #define _LIBUNWIND_CURSOR_SIZE 23 # else # error "Unsupported architecture." # endif #else // !_LIBUNWIND_IS_NATIVE_ONLY -# define _LIBUNWIND_TARGET_I386 1 +# define _LIBUNWIND_TARGET_I386 # define _LIBUNWIND_TARGET_X86_64 1 # define _LIBUNWIND_TARGET_PPC 1 +# define _LIBUNWIND_TARGET_PPC64 1 # define _LIBUNWIND_TARGET_AARCH64 1 # define _LIBUNWIND_TARGET_ARM 1 # define _LIBUNWIND_TARGET_OR1K 1 # define _LIBUNWIND_TARGET_MIPS_O32 1 # define _LIBUNWIND_TARGET_MIPS_NEWABI 1 -# define _LIBUNWIND_CONTEXT_SIZE 128 -# define _LIBUNWIND_CURSOR_SIZE 140 -# define _LIBUNWIND_MAX_REGISTER 120 +# define _LIBUNWIND_TARGET_SPARC 1 +# define _LIBUNWIND_CONTEXT_SIZE 167 +# define _LIBUNWIND_CURSOR_SIZE 179 +# define _LIBUNWIND_HIGHEST_DWARF_REGISTER 287 #endif // _LIBUNWIND_IS_NATIVE_ONLY #endif // ____LIBUNWIND_CONFIG_H__ Modified: head/contrib/llvm/projects/libunwind/include/libunwind.h ============================================================================== --- head/contrib/llvm/projects/libunwind/include/libunwind.h Mon Mar 11 18:28:20 2019 (r345017) +++ head/contrib/llvm/projects/libunwind/include/libunwind.h Mon Mar 11 18:45:36 2019 (r345018) @@ -20,12 +20,26 @@ #include <stddef.h> #ifdef __APPLE__ - #include <Availability.h> - #ifdef __arm__ - #define LIBUNWIND_AVAIL __attribute__((unavailable)) + #if __clang__ + #if __has_include(<Availability.h>) + #include <Availability.h> + #endif + #elif __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 + #include <Availability.h> + #endif + + #ifdef __arm__ + #define LIBUNWIND_AVAIL __attribute__((unavailable)) + #elif defined(__OSX_AVAILABLE_STARTING) + #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_5_0) + #else + #include <AvailabilityMacros.h> + #ifdef AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER + #define LIBUNWIND_AVAIL AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER #else - #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_5_0) + #define LIBUNWIND_AVAIL __attribute__((unavailable)) #endif + #endif #else #define LIBUNWIND_AVAIL #endif @@ -43,6 +57,9 @@ enum { UNW_EINVAL = -6547, /* unsupported operation or bad value */ UNW_EBADVERSION = -6548, /* unwind info has unsupported version */ UNW_ENOINFO = -6549 /* no unwind info found */ +#if defined(_LIBUNWIND_TARGET_AARCH64) && !defined(_LIBUNWIND_IS_NATIVE_ONLY) + , UNW_ECROSSRASIGNING = -6550 /* cross unwind with return address signing */ +#endif }; struct unw_context_t { @@ -58,11 +75,10 @@ typedef struct unw_cursor_t unw_cursor_t; typedef struct unw_addr_space *unw_addr_space_t; typedef int unw_regnum_t; -#if _LIBUNWIND_ARM_EHABI -typedef uint32_t unw_word_t; +typedef uintptr_t unw_word_t; +#if defined(__arm__) typedef uint64_t unw_fpreg_t; #else -typedef uint64_t unw_word_t; typedef double unw_fpreg_t; #endif @@ -75,8 +91,8 @@ struct unw_proc_info_t { unw_word_t gp; /* not used */ unw_word_t flags; /* not used */ uint32_t format; /* compact unwind encoding, or zero if none */ - uint32_t unwind_info_size; /* size of dwarf unwind info, or zero if none */ - unw_word_t unwind_info; /* address of dwarf unwind info, or zero */ + uint32_t unwind_info_size; /* size of DWARF unwind info, or zero if none */ + unw_word_t unwind_info; /* address of DWARF unwind info, or zero */ unw_word_t extra; /* mach_header of mach-o image containing func */ }; typedef struct unw_proc_info_t unw_proc_info_t; @@ -151,8 +167,8 @@ enum { UNW_X86_ECX = 1, UNW_X86_EDX = 2, UNW_X86_EBX = 3, - UNW_X86_ESP = 4, - UNW_X86_EBP = 5, + UNW_X86_EBP = 4, + UNW_X86_ESP = 5, UNW_X86_ESI = 6, UNW_X86_EDI = 7 }; @@ -174,7 +190,24 @@ enum { UNW_X86_64_R12 = 12, UNW_X86_64_R13 = 13, UNW_X86_64_R14 = 14, - UNW_X86_64_R15 = 15 + UNW_X86_64_R15 = 15, + UNW_X86_64_RIP = 16, + UNW_X86_64_XMM0 = 17, + UNW_X86_64_XMM1 = 18, + UNW_X86_64_XMM2 = 19, + UNW_X86_64_XMM3 = 20, + UNW_X86_64_XMM4 = 21, + UNW_X86_64_XMM5 = 22, + UNW_X86_64_XMM6 = 23, + UNW_X86_64_XMM7 = 24, + UNW_X86_64_XMM8 = 25, + UNW_X86_64_XMM9 = 26, + UNW_X86_64_XMM10 = 27, + UNW_X86_64_XMM11 = 28, + UNW_X86_64_XMM12 = 29, + UNW_X86_64_XMM13 = 30, + UNW_X86_64_XMM14 = 31, + UNW_X86_64_XMM15 = 32, }; @@ -295,6 +328,190 @@ enum { UNW_PPC_SPEFSCR = 112 }; +// 64-bit ppc register numbers +enum { + UNW_PPC64_R0 = 0, + UNW_PPC64_R1 = 1, + UNW_PPC64_R2 = 2, + UNW_PPC64_R3 = 3, + UNW_PPC64_R4 = 4, + UNW_PPC64_R5 = 5, + UNW_PPC64_R6 = 6, + UNW_PPC64_R7 = 7, + UNW_PPC64_R8 = 8, + UNW_PPC64_R9 = 9, + UNW_PPC64_R10 = 10, + UNW_PPC64_R11 = 11, + UNW_PPC64_R12 = 12, + UNW_PPC64_R13 = 13, + UNW_PPC64_R14 = 14, + UNW_PPC64_R15 = 15, + UNW_PPC64_R16 = 16, + UNW_PPC64_R17 = 17, + UNW_PPC64_R18 = 18, + UNW_PPC64_R19 = 19, + UNW_PPC64_R20 = 20, + UNW_PPC64_R21 = 21, + UNW_PPC64_R22 = 22, + UNW_PPC64_R23 = 23, + UNW_PPC64_R24 = 24, + UNW_PPC64_R25 = 25, + UNW_PPC64_R26 = 26, + UNW_PPC64_R27 = 27, + UNW_PPC64_R28 = 28, + UNW_PPC64_R29 = 29, + UNW_PPC64_R30 = 30, + UNW_PPC64_R31 = 31, + UNW_PPC64_F0 = 32, + UNW_PPC64_F1 = 33, + UNW_PPC64_F2 = 34, + UNW_PPC64_F3 = 35, + UNW_PPC64_F4 = 36, + UNW_PPC64_F5 = 37, + UNW_PPC64_F6 = 38, + UNW_PPC64_F7 = 39, + UNW_PPC64_F8 = 40, + UNW_PPC64_F9 = 41, + UNW_PPC64_F10 = 42, + UNW_PPC64_F11 = 43, + UNW_PPC64_F12 = 44, + UNW_PPC64_F13 = 45, + UNW_PPC64_F14 = 46, + UNW_PPC64_F15 = 47, + UNW_PPC64_F16 = 48, + UNW_PPC64_F17 = 49, + UNW_PPC64_F18 = 50, + UNW_PPC64_F19 = 51, + UNW_PPC64_F20 = 52, + UNW_PPC64_F21 = 53, + UNW_PPC64_F22 = 54, + UNW_PPC64_F23 = 55, + UNW_PPC64_F24 = 56, + UNW_PPC64_F25 = 57, + UNW_PPC64_F26 = 58, + UNW_PPC64_F27 = 59, + UNW_PPC64_F28 = 60, + UNW_PPC64_F29 = 61, + UNW_PPC64_F30 = 62, + UNW_PPC64_F31 = 63, + // 64: reserved + UNW_PPC64_LR = 65, + UNW_PPC64_CTR = 66, + // 67: reserved + UNW_PPC64_CR0 = 68, + UNW_PPC64_CR1 = 69, + UNW_PPC64_CR2 = 70, + UNW_PPC64_CR3 = 71, + UNW_PPC64_CR4 = 72, + UNW_PPC64_CR5 = 73, + UNW_PPC64_CR6 = 74, + UNW_PPC64_CR7 = 75, + UNW_PPC64_XER = 76, + UNW_PPC64_V0 = 77, + UNW_PPC64_V1 = 78, + UNW_PPC64_V2 = 79, + UNW_PPC64_V3 = 80, + UNW_PPC64_V4 = 81, + UNW_PPC64_V5 = 82, + UNW_PPC64_V6 = 83, + UNW_PPC64_V7 = 84, + UNW_PPC64_V8 = 85, + UNW_PPC64_V9 = 86, + UNW_PPC64_V10 = 87, + UNW_PPC64_V11 = 88, + UNW_PPC64_V12 = 89, + UNW_PPC64_V13 = 90, + UNW_PPC64_V14 = 91, + UNW_PPC64_V15 = 92, + UNW_PPC64_V16 = 93, + UNW_PPC64_V17 = 94, + UNW_PPC64_V18 = 95, + UNW_PPC64_V19 = 96, + UNW_PPC64_V20 = 97, + UNW_PPC64_V21 = 98, + UNW_PPC64_V22 = 99, + UNW_PPC64_V23 = 100, + UNW_PPC64_V24 = 101, + UNW_PPC64_V25 = 102, + UNW_PPC64_V26 = 103, + UNW_PPC64_V27 = 104, + UNW_PPC64_V28 = 105, + UNW_PPC64_V29 = 106, + UNW_PPC64_V30 = 107, + UNW_PPC64_V31 = 108, + // 109, 111-113: OpenPOWER ELF V2 ABI: reserved + // Borrowing VRSAVE number from PPC32. + UNW_PPC64_VRSAVE = 109, + UNW_PPC64_VSCR = 110, + UNW_PPC64_TFHAR = 114, + UNW_PPC64_TFIAR = 115, + UNW_PPC64_TEXASR = 116, + UNW_PPC64_VS0 = UNW_PPC64_F0, + UNW_PPC64_VS1 = UNW_PPC64_F1, + UNW_PPC64_VS2 = UNW_PPC64_F2, + UNW_PPC64_VS3 = UNW_PPC64_F3, + UNW_PPC64_VS4 = UNW_PPC64_F4, + UNW_PPC64_VS5 = UNW_PPC64_F5, + UNW_PPC64_VS6 = UNW_PPC64_F6, + UNW_PPC64_VS7 = UNW_PPC64_F7, + UNW_PPC64_VS8 = UNW_PPC64_F8, + UNW_PPC64_VS9 = UNW_PPC64_F9, + UNW_PPC64_VS10 = UNW_PPC64_F10, + UNW_PPC64_VS11 = UNW_PPC64_F11, + UNW_PPC64_VS12 = UNW_PPC64_F12, + UNW_PPC64_VS13 = UNW_PPC64_F13, + UNW_PPC64_VS14 = UNW_PPC64_F14, + UNW_PPC64_VS15 = UNW_PPC64_F15, + UNW_PPC64_VS16 = UNW_PPC64_F16, + UNW_PPC64_VS17 = UNW_PPC64_F17, + UNW_PPC64_VS18 = UNW_PPC64_F18, + UNW_PPC64_VS19 = UNW_PPC64_F19, + UNW_PPC64_VS20 = UNW_PPC64_F20, + UNW_PPC64_VS21 = UNW_PPC64_F21, + UNW_PPC64_VS22 = UNW_PPC64_F22, + UNW_PPC64_VS23 = UNW_PPC64_F23, + UNW_PPC64_VS24 = UNW_PPC64_F24, + UNW_PPC64_VS25 = UNW_PPC64_F25, + UNW_PPC64_VS26 = UNW_PPC64_F26, + UNW_PPC64_VS27 = UNW_PPC64_F27, + UNW_PPC64_VS28 = UNW_PPC64_F28, + UNW_PPC64_VS29 = UNW_PPC64_F29, + UNW_PPC64_VS30 = UNW_PPC64_F30, + UNW_PPC64_VS31 = UNW_PPC64_F31, + UNW_PPC64_VS32 = UNW_PPC64_V0, + UNW_PPC64_VS33 = UNW_PPC64_V1, + UNW_PPC64_VS34 = UNW_PPC64_V2, + UNW_PPC64_VS35 = UNW_PPC64_V3, + UNW_PPC64_VS36 = UNW_PPC64_V4, + UNW_PPC64_VS37 = UNW_PPC64_V5, + UNW_PPC64_VS38 = UNW_PPC64_V6, + UNW_PPC64_VS39 = UNW_PPC64_V7, + UNW_PPC64_VS40 = UNW_PPC64_V8, + UNW_PPC64_VS41 = UNW_PPC64_V9, + UNW_PPC64_VS42 = UNW_PPC64_V10, + UNW_PPC64_VS43 = UNW_PPC64_V11, + UNW_PPC64_VS44 = UNW_PPC64_V12, + UNW_PPC64_VS45 = UNW_PPC64_V13, + UNW_PPC64_VS46 = UNW_PPC64_V14, + UNW_PPC64_VS47 = UNW_PPC64_V15, + UNW_PPC64_VS48 = UNW_PPC64_V16, + UNW_PPC64_VS49 = UNW_PPC64_V17, + UNW_PPC64_VS50 = UNW_PPC64_V18, + UNW_PPC64_VS51 = UNW_PPC64_V19, + UNW_PPC64_VS52 = UNW_PPC64_V20, + UNW_PPC64_VS53 = UNW_PPC64_V21, + UNW_PPC64_VS54 = UNW_PPC64_V22, + UNW_PPC64_VS55 = UNW_PPC64_V23, + UNW_PPC64_VS56 = UNW_PPC64_V24, + UNW_PPC64_VS57 = UNW_PPC64_V25, + UNW_PPC64_VS58 = UNW_PPC64_V26, + UNW_PPC64_VS59 = UNW_PPC64_V27, + UNW_PPC64_VS60 = UNW_PPC64_V28, + UNW_PPC64_VS61 = UNW_PPC64_V29, + UNW_PPC64_VS62 = UNW_PPC64_V30, + UNW_PPC64_VS63 = UNW_PPC64_V31 +}; + // 64-bit ARM64 registers enum { UNW_ARM64_X0 = 0, @@ -333,6 +550,8 @@ enum { UNW_ARM64_X31 = 31, UNW_ARM64_SP = 31, // reserved block + UNW_ARM64_RA_SIGN_STATE = 34, + // reserved block UNW_ARM64_D0 = 64, UNW_ARM64_D1 = 65, UNW_ARM64_D2 = 66, @@ -531,6 +750,7 @@ enum { UNW_OR1K_R29 = 29, UNW_OR1K_R30 = 30, UNW_OR1K_R31 = 31, + UNW_OR1K_EPCR = 32, }; // 64-bit RISC-V registers @@ -672,6 +892,42 @@ enum { UNW_MIPS_F31 = 63, UNW_MIPS_HI = 64, UNW_MIPS_LO = 65, +}; + +// SPARC registers +enum { + UNW_SPARC_G0 = 0, + UNW_SPARC_G1 = 1, + UNW_SPARC_G2 = 2, + UNW_SPARC_G3 = 3, + UNW_SPARC_G4 = 4, + UNW_SPARC_G5 = 5, + UNW_SPARC_G6 = 6, + UNW_SPARC_G7 = 7, + UNW_SPARC_O0 = 8, + UNW_SPARC_O1 = 9, + UNW_SPARC_O2 = 10, + UNW_SPARC_O3 = 11, + UNW_SPARC_O4 = 12, + UNW_SPARC_O5 = 13, + UNW_SPARC_O6 = 14, + UNW_SPARC_O7 = 15, + UNW_SPARC_L0 = 16, + UNW_SPARC_L1 = 17, + UNW_SPARC_L2 = 18, + UNW_SPARC_L3 = 19, + UNW_SPARC_L4 = 20, + UNW_SPARC_L5 = 21, + UNW_SPARC_L6 = 22, + UNW_SPARC_L7 = 23, + UNW_SPARC_I0 = 24, + UNW_SPARC_I1 = 25, + UNW_SPARC_I2 = 26, + UNW_SPARC_I3 = 27, + UNW_SPARC_I4 = 28, + UNW_SPARC_I5 = 29, + UNW_SPARC_I6 = 30, + UNW_SPARC_I7 = 31, }; #endif Modified: head/contrib/llvm/projects/libunwind/include/mach-o/compact_unwind_encoding.h ============================================================================== --- head/contrib/llvm/projects/libunwind/include/mach-o/compact_unwind_encoding.h Mon Mar 11 18:28:20 2019 (r345017) +++ head/contrib/llvm/projects/libunwind/include/mach-o/compact_unwind_encoding.h Mon Mar 11 18:45:36 2019 (r345018) @@ -6,7 +6,7 @@ // Source Licenses. See LICENSE.TXT for details. // // -// Darwin's alternative to dwarf based unwind encodings. +// Darwin's alternative to DWARF based unwind encodings. // //===----------------------------------------------------------------------===// @@ -17,7 +17,7 @@ #include <stdint.h> // -// Compilers can emit standard Dwarf FDEs in the __TEXT,__eh_frame section +// Compilers can emit standard DWARF FDEs in the __TEXT,__eh_frame section // of object files. Or compilers can emit compact unwind information in // the __LD,__compact_unwind section. // @@ -26,10 +26,10 @@ // runtime to access unwind info for any given function. If the compiler // emitted compact unwind info for the function, that compact unwind info will // be encoded in the __TEXT,__unwind_info section. If the compiler emitted -// dwarf unwind info, the __TEXT,__unwind_info section will contain the offset +// DWARF unwind info, the __TEXT,__unwind_info section will contain the offset // of the FDE in the __TEXT,__eh_frame section in the final linked image. // -// Note: Previously, the linker would transform some dwarf unwind infos into +// Note: Previously, the linker would transform some DWARF unwind infos into // compact unwind info. But that is fragile and no longer done. @@ -58,7 +58,7 @@ enum { // 1-bit: has lsda // 2-bit: personality index // -// 4-bits: 0=old, 1=ebp based, 2=stack-imm, 3=stack-ind, 4=dwarf +// 4-bits: 0=old, 1=ebp based, 2=stack-imm, 3=stack-ind, 4=DWARF // ebp based: // 15-bits (5*3-bits per reg) register permutation // 8-bits for stack offset @@ -128,9 +128,9 @@ enum { // UNWIND_X86_FRAMELESS_STACK_SIZE. // UNWIND_X86_MODE_DWARF: // No compact unwind encoding is available. Instead the low 24-bits of the -// compact encoding is the offset of the dwarf FDE in the __eh_frame section. +// compact encoding is the offset of the DWARF FDE in the __eh_frame section. // This mode is never used in object files. It is only generated by the -// linker in final linked images which have only dwarf unwind info for a +// linker in final linked images which have only DWARF unwind info for a // function. // // The permutation encoding is a Lehmer code sequence encoded into a @@ -193,7 +193,7 @@ enum { // 1-bit: has lsda // 2-bit: personality index // -// 4-bits: 0=old, 1=rbp based, 2=stack-imm, 3=stack-ind, 4=dwarf +// 4-bits: 0=old, 1=rbp based, 2=stack-imm, 3=stack-ind, 4=DWARF // rbp based: // 15-bits (5*3-bits per reg) register permutation // 8-bits for stack offset @@ -262,9 +262,9 @@ enum { // UNWIND_X86_64_FRAMELESS_STACK_SIZE. // UNWIND_X86_64_MODE_DWARF: // No compact unwind encoding is available. Instead the low 24-bits of the -// compact encoding is the offset of the dwarf FDE in the __eh_frame section. +// compact encoding is the offset of the DWARF FDE in the __eh_frame section. // This mode is never used in object files. It is only generated by the -// linker in final linked images which have only dwarf unwind info for a +// linker in final linked images which have only DWARF unwind info for a // function. // @@ -275,14 +275,14 @@ enum { // 1-bit: has lsda // 2-bit: personality index // -// 4-bits: 4=frame-based, 3=dwarf, 2=frameless +// 4-bits: 4=frame-based, 3=DWARF, 2=frameless // frameless: // 12-bits of stack size // frame-based: // 4-bits D reg pairs saved // 5-bits X reg pairs saved -// dwarf: -// 24-bits offset of dwarf FDE in __eh_frame section +// DWARF: +// 24-bits offset of DWARF FDE in __eh_frame section // enum { UNWIND_ARM64_MODE_MASK = 0x0F000000, @@ -320,9 +320,9 @@ enum { // UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK. // UNWIND_ARM64_MODE_DWARF: // No compact unwind encoding is available. Instead the low 24-bits of the -// compact encoding is the offset of the dwarf FDE in the __eh_frame section. +// compact encoding is the offset of the DWARF FDE in the __eh_frame section. // This mode is never used in object files. It is only generated by the -// linker in final linked images which have only dwarf unwind info for a +// linker in final linked images which have only DWARF unwind info for a // function. // @@ -385,7 +385,7 @@ enum { // saved at that range of the function. // // If a particular function is so wacky that there is no compact unwind way -// to encode it, then the compiler can emit traditional dwarf unwind info. +// to encode it, then the compiler can emit traditional DWARF unwind info. // The runtime will use which ever is available. // // Runtime support for compact unwind encodings are only available on 10.6 Modified: head/contrib/llvm/projects/libunwind/include/unwind.h ============================================================================== --- head/contrib/llvm/projects/libunwind/include/unwind.h Mon Mar 11 18:28:20 2019 (r345017) +++ head/contrib/llvm/projects/libunwind/include/unwind.h Mon Mar 11 18:45:36 2019 (r345018) @@ -19,6 +19,11 @@ #include <stdint.h> #include <stddef.h> +#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) && defined(_WIN32) +#include <windows.h> +#include <ntverp.h> +#endif + #if defined(__APPLE__) #define LIBUNWIND_UNAVAIL __attribute__ (( unavailable )) #else @@ -36,7 +41,7 @@ typedef enum { _URC_HANDLER_FOUND = 6, _URC_INSTALL_CONTEXT = 7, _URC_CONTINUE_UNWIND = 8, -#if _LIBUNWIND_ARM_EHABI +#if defined(_LIBUNWIND_ARM_EHABI) _URC_FAILURE = 9 #endif } _Unwind_Reason_Code; @@ -51,12 +56,13 @@ typedef enum { typedef struct _Unwind_Context _Unwind_Context; // opaque -#if _LIBUNWIND_ARM_EHABI +#if defined(_LIBUNWIND_ARM_EHABI) typedef uint32_t _Unwind_State; static const _Unwind_State _US_VIRTUAL_UNWIND_FRAME = 0; static const _Unwind_State _US_UNWIND_FRAME_STARTING = 1; static const _Unwind_State _US_UNWIND_FRAME_RESUME = 2; +static const _Unwind_State _US_ACTION_MASK = 3; /* Undocumented flag for force unwinding. */ static const _Unwind_State _US_FORCE_UNWIND = 8; @@ -99,7 +105,7 @@ struct _Unwind_Control_Block { } pr_cache; long long int :0; /* Enforce the 8-byte alignment */ -}; +} __attribute__((__aligned__(8))); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (_Unwind_State state, @@ -119,15 +125,22 @@ struct _Unwind_Exception { uint64_t exception_class; void (*exception_cleanup)(_Unwind_Reason_Code reason, _Unwind_Exception *exc); +#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) + uintptr_t private_[6]; +#else uintptr_t private_1; // non-zero means forced unwind uintptr_t private_2; // holds sp that phase1 found for phase2 to use -#ifndef __LP64__ - // The gcc implementation of _Unwind_Exception used attribute mode on the - // above fields which had the side effect of causing this whole struct to - // round up to 32 bytes in size. To be more explicit, we add pad fields - // added for binary compatibility. +#endif +#if __SIZEOF_POINTER__ == 4 + // The implementation of _Unwind_Exception uses an attribute mode on the + // above fields which has the side effect of causing this whole struct to + // round up to 32 bytes in size (48 with SEH). To be more explicit, we add + // pad fields added for binary compatibility. uint32_t reserved[3]; #endif + // The Itanium ABI requires that _Unwind_Exception objects are "double-word + // aligned". GCC has interpreted this to mean "use the maximum useful + // alignment for the target"; so do we. } __attribute__((__aligned__)); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) @@ -164,7 +177,7 @@ extern void _Unwind_Resume(_Unwind_Exception *exceptio #endif extern void _Unwind_DeleteException(_Unwind_Exception *exception_object); -#if _LIBUNWIND_ARM_EHABI +#if defined(_LIBUNWIND_ARM_EHABI) typedef enum { _UVRSC_CORE = 0, /* integer register */ _UVRSC_VFP = 1, /* vfp */ @@ -204,7 +217,7 @@ _Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_ _Unwind_VRS_DataRepresentation representation); #endif -#if !_LIBUNWIND_ARM_EHABI +#if !defined(_LIBUNWIND_ARM_EHABI) extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index); extern void _Unwind_SetGR(struct _Unwind_Context *context, int index, @@ -212,7 +225,7 @@ extern void _Unwind_SetGR(struct _Unwind_Context *cont extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context); extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value); -#else // _LIBUNWIND_ARM_EHABI +#else // defined(_LIBUNWIND_ARM_EHABI) #if defined(_LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE) #define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 extern @@ -251,7 +264,7 @@ void _Unwind_SetIP(struct _Unwind_Context *context, ui uintptr_t thumb_bit = _Unwind_GetGR(context, 15) & ((uintptr_t)0x1); _Unwind_SetGR(context, 15, value | thumb_bit); } -#endif // _LIBUNWIND_ARM_EHABI +#endif // defined(_LIBUNWIND_ARM_EHABI) extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context); extern uintptr_t @@ -321,7 +334,7 @@ extern void __deregister_frame(const void *fde); // _Unwind_Find_FDE() will locate the FDE if the pc is in some function that has // an associated FDE. Note, Mac OS X 10.6 and later, introduces "compact unwind -// info" which the runtime uses in preference to dwarf unwind info. This +// info" which the runtime uses in preference to DWARF unwind info. This // function will only work if the target function has an FDE but no compact // unwind info. struct dwarf_eh_bases { @@ -334,7 +347,7 @@ extern const void *_Unwind_Find_FDE(const void *pc, st // This function attempts to find the start (address of first instruction) of // a function given an address inside the function. It only works if the -// function has an FDE (dwarf unwind info). +// function has an FDE (DWARF unwind info). // This function is unimplemented on Mac OS X 10.6 and later. Instead, use // _Unwind_Find_FDE() and look at the dwarf_eh_bases.func result. extern void *_Unwind_FindEnclosingFunction(void *pc); @@ -364,6 +377,22 @@ extern void *__deregister_frame_info(const void *fde) LIBUNWIND_UNAVAIL; extern void *__deregister_frame_info_bases(const void *fde) LIBUNWIND_UNAVAIL; + +#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__) +#ifndef _WIN32 +typedef struct _EXCEPTION_RECORD EXCEPTION_RECORD; +typedef struct _CONTEXT CONTEXT; +typedef struct _DISPATCHER_CONTEXT DISPATCHER_CONTEXT; +#elif !defined(__MINGW32__) && VER_PRODUCTBUILD < 8000 +typedef struct _DISPATCHER_CONTEXT DISPATCHER_CONTEXT; +#endif +// This is the common wrapper for GCC-style personality functions with SEH. +extern EXCEPTION_DISPOSITION _GCC_specific_handler(EXCEPTION_RECORD *exc, + void *frame, + CONTEXT *ctx, + DISPATCHER_CONTEXT *disp, + __personality_routine pers); +#endif #ifdef __cplusplus } Modified: head/contrib/llvm/projects/libunwind/src/AddressSpace.hpp ============================================================================== --- head/contrib/llvm/projects/libunwind/src/AddressSpace.hpp Mon Mar 11 18:28:20 2019 (r345017) +++ head/contrib/llvm/projects/libunwind/src/AddressSpace.hpp Mon Mar 11 18:45:36 2019 (r345018) @@ -18,7 +18,15 @@ #include <stdlib.h> #include <string.h> -#ifndef _LIBUNWIND_IS_BAREMETAL +#ifndef _LIBUNWIND_USE_DLADDR + #if !defined(_LIBUNWIND_IS_BAREMETAL) && !defined(_WIN32) + #define _LIBUNWIND_USE_DLADDR 1 + #else + #define _LIBUNWIND_USE_DLADDR 0 + #endif +#endif + +#if _LIBUNWIND_USE_DLADDR #include <dlfcn.h> #endif @@ -32,73 +40,137 @@ namespace libunwind { #include "libunwind.h" #include "config.h" #include "dwarf2.h" +#include "EHHeaderParser.hpp" #include "Registers.hpp" -#if _LIBUNWIND_ARM_EHABI -#if defined(__FreeBSD__) || defined(__NetBSD__) +#ifdef __APPLE__ -#include <sys/link_elf.h> -typedef void *_Unwind_Ptr; + struct dyld_unwind_sections + { + const struct mach_header* mh; + const void* dwarf_section; + uintptr_t dwarf_section_length; + const void* compact_unwind_section; + uintptr_t compact_unwind_section_length; + }; + #if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) \ + && (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)) \ + || defined(__IPHONE_OS_VERSION_MIN_REQUIRED) + // In 10.7.0 or later, libSystem.dylib implements this function. + extern "C" bool _dyld_find_unwind_sections(void *, dyld_unwind_sections *); + #else + // In 10.6.x and earlier, we need to implement this functionality. Note + // that this requires a newer version of libmacho (from cctools) than is + // present in libSystem on 10.6.x (for getsectiondata). + static inline bool _dyld_find_unwind_sections(void* addr, + dyld_unwind_sections* info) { + // Find mach-o image containing address. + Dl_info dlinfo; + if (!dladdr(addr, &dlinfo)) + return false; +#if __LP64__ + const struct mach_header_64 *mh = (const struct mach_header_64 *)dlinfo.dli_fbase; +#else + const struct mach_header *mh = (const struct mach_header *)dlinfo.dli_fbase; +#endif -#elif defined(__linux__) + // Initialize the return struct + info->mh = (const struct mach_header *)mh; + info->dwarf_section = getsectiondata(mh, "__TEXT", "__eh_frame", &info->dwarf_section_length); + info->compact_unwind_section = getsectiondata(mh, "__TEXT", "__unwind_info", &info->compact_unwind_section_length); -typedef long unsigned int *_Unwind_Ptr; -extern "C" _Unwind_Ptr __gnu_Unwind_Find_exidx(_Unwind_Ptr addr, int *len); + if (!info->dwarf_section) { + info->dwarf_section_length = 0; + } -// Emulate the BSD dl_unwind_find_exidx API when on a GNU libdl system. -#define dl_unwind_find_exidx __gnu_Unwind_Find_exidx + if (!info->compact_unwind_section) { + info->compact_unwind_section_length = 0; + } -#elif !defined(_LIBUNWIND_IS_BAREMETAL) -#include <link.h> -#else // !defined(_LIBUNWIND_IS_BAREMETAL) + return true; + } + #endif + +#elif defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) && defined(_LIBUNWIND_IS_BAREMETAL) + // When statically linked on bare-metal, the symbols for the EH table are looked // up without going through the dynamic loader. -struct EHTEntry { - uint32_t functionOffset; - uint32_t unwindOpcodes; -}; -extern EHTEntry __exidx_start; -extern EHTEntry __exidx_end; -#endif // !defined(_LIBUNWIND_IS_BAREMETAL) -#endif // _LIBUNWIND_ARM_EHABI -#if defined(__CloudABI__) || defined(__FreeBSD__) || defined(__linux__) || \ - defined(__NetBSD__) -#if _LIBUNWIND_SUPPORT_DWARF_UNWIND && _LIBUNWIND_SUPPORT_DWARF_INDEX +// The following linker script may be used to produce the necessary sections and symbols. +// Unless the --eh-frame-hdr linker option is provided, the section is not generated +// and does not take space in the output file. +// +// .eh_frame : +// { +// __eh_frame_start = .; +// KEEP(*(.eh_frame)) +// __eh_frame_end = .; +// } +// +// .eh_frame_hdr : +// { +// KEEP(*(.eh_frame_hdr)) +// } +// +// __eh_frame_hdr_start = SIZEOF(.eh_frame_hdr) > 0 ? ADDR(.eh_frame_hdr) : 0; +// __eh_frame_hdr_end = SIZEOF(.eh_frame_hdr) > 0 ? . : 0; + +extern char __eh_frame_start; +extern char __eh_frame_end; + +#if defined(_LIBUNWIND_SUPPORT_DWARF_INDEX) +extern char __eh_frame_hdr_start; +extern char __eh_frame_hdr_end; +#endif + +#elif defined(_LIBUNWIND_ARM_EHABI) && defined(_LIBUNWIND_IS_BAREMETAL) + +// When statically linked on bare-metal, the symbols for the EH table are looked +// up without going through the dynamic loader. +extern char __exidx_start; +extern char __exidx_end; + +#elif defined(_LIBUNWIND_ARM_EHABI) || defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND) + *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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