From ee8031b773ba5a69dd7f317088c99cc42ffcaf56 Mon Sep 17 00:00:00 2001 From: Saleem Abdulrasool Date: Fri, 24 Apr 2015 19:40:31 +0000 Subject: libc++abi: remove the duplicated unwind content The unwinder has been moved into its own project setup at http://svn.llvm.org/projects/libunwind/trunk. This simply removes the now duplicated content. This move was previously discussed on llvmdev at [1]. [1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-January/081507.html git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@235759 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/libunwind.h | 500 ------------------------------- include/mach-o/compact_unwind_encoding.h | 478 ----------------------------- include/unwind.h | 329 -------------------- 3 files changed, 1307 deletions(-) delete mode 100644 include/libunwind.h delete mode 100644 include/mach-o/compact_unwind_encoding.h delete mode 100644 include/unwind.h (limited to 'include') diff --git a/include/libunwind.h b/include/libunwind.h deleted file mode 100644 index e2396e4..0000000 --- a/include/libunwind.h +++ /dev/null @@ -1,500 +0,0 @@ -//===---------------------------- libunwind.h -----------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -// -// Compatible with libuwind API documented at: -// http://www.nongnu.org/libunwind/man/libunwind(3).html -// -//===----------------------------------------------------------------------===// - -#ifndef __LIBUNWIND__ -#define __LIBUNWIND__ - -#include -#include - -#include <__cxxabi_config.h> - -#ifdef __APPLE__ - #include - #ifdef __arm__ - #define LIBUNWIND_AVAIL __attribute__((unavailable)) - #else - #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_5_0) - #endif -#else - #define LIBUNWIND_AVAIL -#endif - -/* error codes */ -enum { - UNW_ESUCCESS = 0, /* no error */ - UNW_EUNSPEC = -6540, /* unspecified (general) error */ - UNW_ENOMEM = -6541, /* out of memory */ - UNW_EBADREG = -6542, /* bad register number */ - UNW_EREADONLYREG = -6543, /* attempt to write read-only register */ - UNW_ESTOPUNWIND = -6544, /* stop unwinding */ - UNW_EINVALIDIP = -6545, /* invalid IP */ - UNW_EBADFRAME = -6546, /* bad frame */ - UNW_EINVAL = -6547, /* unsupported operation or bad value */ - UNW_EBADVERSION = -6548, /* unwind info has unsupported version */ - UNW_ENOINFO = -6549 /* no unwind info found */ -}; - -struct unw_context_t { - uint64_t data[128]; -}; -typedef struct unw_context_t unw_context_t; - -struct unw_cursor_t { - uint64_t data[140]; -}; -typedef struct unw_cursor_t unw_cursor_t; - -typedef struct unw_addr_space *unw_addr_space_t; - -typedef int unw_regnum_t; -#if LIBCXXABI_ARM_EHABI -typedef uint32_t unw_word_t; -typedef uint64_t unw_fpreg_t; -#else -typedef uint64_t unw_word_t; -typedef double unw_fpreg_t; -#endif - -struct unw_proc_info_t { - unw_word_t start_ip; /* start address of function */ - unw_word_t end_ip; /* address after end of function */ - unw_word_t lsda; /* address of language specific data area, */ - /* or zero if not used */ - unw_word_t handler; /* personality routine, or zero if not used */ - 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 */ - unw_word_t extra; /* mach_header of mach-o image containing func */ -}; -typedef struct unw_proc_info_t unw_proc_info_t; - -#ifdef __cplusplus -extern "C" { -#endif - -extern int unw_getcontext(unw_context_t *) LIBUNWIND_AVAIL; -extern int unw_init_local(unw_cursor_t *, unw_context_t *) LIBUNWIND_AVAIL; -extern int unw_step(unw_cursor_t *) LIBUNWIND_AVAIL; -extern int unw_get_reg(unw_cursor_t *, unw_regnum_t, unw_word_t *) LIBUNWIND_AVAIL; -extern int unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *) LIBUNWIND_AVAIL; -extern int unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t) LIBUNWIND_AVAIL; -extern int unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t) LIBUNWIND_AVAIL; -extern int unw_resume(unw_cursor_t *) LIBUNWIND_AVAIL; - -#ifdef __arm__ -/* Save VFP registers in FSTMX format (instead of FSTMD). */ -extern void unw_save_vfp_as_X(unw_cursor_t *) LIBUNWIND_AVAIL; -#endif - - -extern const char *unw_regname(unw_cursor_t *, unw_regnum_t) LIBUNWIND_AVAIL; -extern int unw_get_proc_info(unw_cursor_t *, unw_proc_info_t *) LIBUNWIND_AVAIL; -extern int unw_is_fpreg(unw_cursor_t *, unw_regnum_t) LIBUNWIND_AVAIL; -extern int unw_is_signal_frame(unw_cursor_t *) LIBUNWIND_AVAIL; -extern int unw_get_proc_name(unw_cursor_t *, char *, size_t, unw_word_t *) LIBUNWIND_AVAIL; -//extern int unw_get_save_loc(unw_cursor_t*, int, unw_save_loc_t*); - -extern unw_addr_space_t unw_local_addr_space; - -#ifdef UNW_REMOTE -/* - * Mac OS X "remote" API for unwinding other processes on same machine - * - */ -extern unw_addr_space_t unw_create_addr_space_for_task(task_t); -extern void unw_destroy_addr_space(unw_addr_space_t); -extern int unw_init_remote_thread(unw_cursor_t *, unw_addr_space_t, thread_t *); -#endif /* UNW_REMOTE */ - -/* - * traditional libuwind "remote" API - * NOT IMPLEMENTED on Mac OS X - * - * extern int unw_init_remote(unw_cursor_t*, unw_addr_space_t, - * thread_t*); - * extern unw_accessors_t unw_get_accessors(unw_addr_space_t); - * extern unw_addr_space_t unw_create_addr_space(unw_accessors_t, int); - * extern void unw_flush_cache(unw_addr_space_t, unw_word_t, - * unw_word_t); - * extern int unw_set_caching_policy(unw_addr_space_t, - * unw_caching_policy_t); - * extern void _U_dyn_register(unw_dyn_info_t*); - * extern void _U_dyn_cancel(unw_dyn_info_t*); - */ - -#ifdef __cplusplus -} -#endif - -// architecture independent register numbers -enum { - UNW_REG_IP = -1, // instruction pointer - UNW_REG_SP = -2, // stack pointer -}; - -// 32-bit x86 registers -enum { - UNW_X86_EAX = 0, - UNW_X86_ECX = 1, - UNW_X86_EDX = 2, - UNW_X86_EBX = 3, - UNW_X86_EBP = 4, - UNW_X86_ESP = 5, - UNW_X86_ESI = 6, - UNW_X86_EDI = 7 -}; - -// 64-bit x86_64 registers -enum { - UNW_X86_64_RAX = 0, - UNW_X86_64_RDX = 1, - UNW_X86_64_RCX = 2, - UNW_X86_64_RBX = 3, - UNW_X86_64_RSI = 4, - UNW_X86_64_RDI = 5, - UNW_X86_64_RBP = 6, - UNW_X86_64_RSP = 7, - UNW_X86_64_R8 = 8, - UNW_X86_64_R9 = 9, - UNW_X86_64_R10 = 10, - UNW_X86_64_R11 = 11, - UNW_X86_64_R12 = 12, - UNW_X86_64_R13 = 13, - UNW_X86_64_R14 = 14, - UNW_X86_64_R15 = 15 -}; - - -// 32-bit ppc register numbers -enum { - UNW_PPC_R0 = 0, - UNW_PPC_R1 = 1, - UNW_PPC_R2 = 2, - UNW_PPC_R3 = 3, - UNW_PPC_R4 = 4, - UNW_PPC_R5 = 5, - UNW_PPC_R6 = 6, - UNW_PPC_R7 = 7, - UNW_PPC_R8 = 8, - UNW_PPC_R9 = 9, - UNW_PPC_R10 = 10, - UNW_PPC_R11 = 11, - UNW_PPC_R12 = 12, - UNW_PPC_R13 = 13, - UNW_PPC_R14 = 14, - UNW_PPC_R15 = 15, - UNW_PPC_R16 = 16, - UNW_PPC_R17 = 17, - UNW_PPC_R18 = 18, - UNW_PPC_R19 = 19, - UNW_PPC_R20 = 20, - UNW_PPC_R21 = 21, - UNW_PPC_R22 = 22, - UNW_PPC_R23 = 23, - UNW_PPC_R24 = 24, - UNW_PPC_R25 = 25, - UNW_PPC_R26 = 26, - UNW_PPC_R27 = 27, - UNW_PPC_R28 = 28, - UNW_PPC_R29 = 29, - UNW_PPC_R30 = 30, - UNW_PPC_R31 = 31, - UNW_PPC_F0 = 32, - UNW_PPC_F1 = 33, - UNW_PPC_F2 = 34, - UNW_PPC_F3 = 35, - UNW_PPC_F4 = 36, - UNW_PPC_F5 = 37, - UNW_PPC_F6 = 38, - UNW_PPC_F7 = 39, - UNW_PPC_F8 = 40, - UNW_PPC_F9 = 41, - UNW_PPC_F10 = 42, - UNW_PPC_F11 = 43, - UNW_PPC_F12 = 44, - UNW_PPC_F13 = 45, - UNW_PPC_F14 = 46, - UNW_PPC_F15 = 47, - UNW_PPC_F16 = 48, - UNW_PPC_F17 = 49, - UNW_PPC_F18 = 50, - UNW_PPC_F19 = 51, - UNW_PPC_F20 = 52, - UNW_PPC_F21 = 53, - UNW_PPC_F22 = 54, - UNW_PPC_F23 = 55, - UNW_PPC_F24 = 56, - UNW_PPC_F25 = 57, - UNW_PPC_F26 = 58, - UNW_PPC_F27 = 59, - UNW_PPC_F28 = 60, - UNW_PPC_F29 = 61, - UNW_PPC_F30 = 62, - UNW_PPC_F31 = 63, - UNW_PPC_MQ = 64, - UNW_PPC_LR = 65, - UNW_PPC_CTR = 66, - UNW_PPC_AP = 67, - UNW_PPC_CR0 = 68, - UNW_PPC_CR1 = 69, - UNW_PPC_CR2 = 70, - UNW_PPC_CR3 = 71, - UNW_PPC_CR4 = 72, - UNW_PPC_CR5 = 73, - UNW_PPC_CR6 = 74, - UNW_PPC_CR7 = 75, - UNW_PPC_XER = 76, - UNW_PPC_V0 = 77, - UNW_PPC_V1 = 78, - UNW_PPC_V2 = 79, - UNW_PPC_V3 = 80, - UNW_PPC_V4 = 81, - UNW_PPC_V5 = 82, - UNW_PPC_V6 = 83, - UNW_PPC_V7 = 84, - UNW_PPC_V8 = 85, - UNW_PPC_V9 = 86, - UNW_PPC_V10 = 87, - UNW_PPC_V11 = 88, - UNW_PPC_V12 = 89, - UNW_PPC_V13 = 90, - UNW_PPC_V14 = 91, - UNW_PPC_V15 = 92, - UNW_PPC_V16 = 93, - UNW_PPC_V17 = 94, - UNW_PPC_V18 = 95, - UNW_PPC_V19 = 96, - UNW_PPC_V20 = 97, - UNW_PPC_V21 = 98, - UNW_PPC_V22 = 99, - UNW_PPC_V23 = 100, - UNW_PPC_V24 = 101, - UNW_PPC_V25 = 102, - UNW_PPC_V26 = 103, - UNW_PPC_V27 = 104, - UNW_PPC_V28 = 105, - UNW_PPC_V29 = 106, - UNW_PPC_V30 = 107, - UNW_PPC_V31 = 108, - UNW_PPC_VRSAVE = 109, - UNW_PPC_VSCR = 110, - UNW_PPC_SPE_ACC = 111, - UNW_PPC_SPEFSCR = 112 -}; - -// 64-bit ARM64 registers -enum { - UNW_ARM64_X0 = 0, - UNW_ARM64_X1 = 1, - UNW_ARM64_X2 = 2, - UNW_ARM64_X3 = 3, - UNW_ARM64_X4 = 4, - UNW_ARM64_X5 = 5, - UNW_ARM64_X6 = 6, - UNW_ARM64_X7 = 7, - UNW_ARM64_X8 = 8, - UNW_ARM64_X9 = 9, - UNW_ARM64_X10 = 10, - UNW_ARM64_X11 = 11, - UNW_ARM64_X12 = 12, - UNW_ARM64_X13 = 13, - UNW_ARM64_X14 = 14, - UNW_ARM64_X15 = 15, - UNW_ARM64_X16 = 16, - UNW_ARM64_X17 = 17, - UNW_ARM64_X18 = 18, - UNW_ARM64_X19 = 19, - UNW_ARM64_X20 = 20, - UNW_ARM64_X21 = 21, - UNW_ARM64_X22 = 22, - UNW_ARM64_X23 = 23, - UNW_ARM64_X24 = 24, - UNW_ARM64_X25 = 25, - UNW_ARM64_X26 = 26, - UNW_ARM64_X27 = 27, - UNW_ARM64_X28 = 28, - UNW_ARM64_X29 = 29, - UNW_ARM64_FP = 29, - UNW_ARM64_X30 = 30, - UNW_ARM64_LR = 30, - UNW_ARM64_X31 = 31, - UNW_ARM64_SP = 31, - // reserved block - UNW_ARM64_D0 = 64, - UNW_ARM64_D1 = 65, - UNW_ARM64_D2 = 66, - UNW_ARM64_D3 = 67, - UNW_ARM64_D4 = 68, - UNW_ARM64_D5 = 69, - UNW_ARM64_D6 = 70, - UNW_ARM64_D7 = 71, - UNW_ARM64_D8 = 72, - UNW_ARM64_D9 = 73, - UNW_ARM64_D10 = 74, - UNW_ARM64_D11 = 75, - UNW_ARM64_D12 = 76, - UNW_ARM64_D13 = 77, - UNW_ARM64_D14 = 78, - UNW_ARM64_D15 = 79, - UNW_ARM64_D16 = 80, - UNW_ARM64_D17 = 81, - UNW_ARM64_D18 = 82, - UNW_ARM64_D19 = 83, - UNW_ARM64_D20 = 84, - UNW_ARM64_D21 = 85, - UNW_ARM64_D22 = 86, - UNW_ARM64_D23 = 87, - UNW_ARM64_D24 = 88, - UNW_ARM64_D25 = 89, - UNW_ARM64_D26 = 90, - UNW_ARM64_D27 = 91, - UNW_ARM64_D28 = 92, - UNW_ARM64_D29 = 93, - UNW_ARM64_D30 = 94, - UNW_ARM64_D31 = 95, -}; - -// 32-bit ARM registers. Numbers match DWARF for ARM spec #3.1 Table 1. -// Naming scheme uses recommendations given in Note 4 for VFP-v2 and VFP-v3. -// In this scheme, even though the 64-bit floating point registers D0-D31 -// overlap physically with the 32-bit floating pointer registers S0-S31, -// they are given a non-overlapping range of register numbers. -// -// Commented out ranges are not preserved during unwinding. -enum { - UNW_ARM_R0 = 0, - UNW_ARM_R1 = 1, - UNW_ARM_R2 = 2, - UNW_ARM_R3 = 3, - UNW_ARM_R4 = 4, - UNW_ARM_R5 = 5, - UNW_ARM_R6 = 6, - UNW_ARM_R7 = 7, - UNW_ARM_R8 = 8, - UNW_ARM_R9 = 9, - UNW_ARM_R10 = 10, - UNW_ARM_R11 = 11, - UNW_ARM_R12 = 12, - UNW_ARM_SP = 13, // Logical alias for UNW_REG_SP - UNW_ARM_R13 = 13, - UNW_ARM_LR = 14, - UNW_ARM_R14 = 14, - UNW_ARM_IP = 15, // Logical alias for UNW_REG_IP - UNW_ARM_R15 = 15, - // 16-63 -- OBSOLETE. Used in VFP1 to represent both S0-S31 and D0-D31. - UNW_ARM_S0 = 64, - UNW_ARM_S1 = 65, - UNW_ARM_S2 = 66, - UNW_ARM_S3 = 67, - UNW_ARM_S4 = 68, - UNW_ARM_S5 = 69, - UNW_ARM_S6 = 70, - UNW_ARM_S7 = 71, - UNW_ARM_S8 = 72, - UNW_ARM_S9 = 73, - UNW_ARM_S10 = 74, - UNW_ARM_S11 = 75, - UNW_ARM_S12 = 76, - UNW_ARM_S13 = 77, - UNW_ARM_S14 = 78, - UNW_ARM_S15 = 79, - UNW_ARM_S16 = 80, - UNW_ARM_S17 = 81, - UNW_ARM_S18 = 82, - UNW_ARM_S19 = 83, - UNW_ARM_S20 = 84, - UNW_ARM_S21 = 85, - UNW_ARM_S22 = 86, - UNW_ARM_S23 = 87, - UNW_ARM_S24 = 88, - UNW_ARM_S25 = 89, - UNW_ARM_S26 = 90, - UNW_ARM_S27 = 91, - UNW_ARM_S28 = 92, - UNW_ARM_S29 = 93, - UNW_ARM_S30 = 94, - UNW_ARM_S31 = 95, - // 96-103 -- OBSOLETE. F0-F7. Used by the FPA system. Superseded by VFP. - // 104-111 -- wCGR0-wCGR7, ACC0-ACC7 (Intel wireless MMX) - UNW_ARM_WR0 = 112, - UNW_ARM_WR1 = 113, - UNW_ARM_WR2 = 114, - UNW_ARM_WR3 = 115, - UNW_ARM_WR4 = 116, - UNW_ARM_WR5 = 117, - UNW_ARM_WR6 = 118, - UNW_ARM_WR7 = 119, - UNW_ARM_WR8 = 120, - UNW_ARM_WR9 = 121, - UNW_ARM_WR10 = 122, - UNW_ARM_WR11 = 123, - UNW_ARM_WR12 = 124, - UNW_ARM_WR13 = 125, - UNW_ARM_WR14 = 126, - UNW_ARM_WR15 = 127, - // 128-133 -- SPSR, SPSR_{FIQ|IRQ|ABT|UND|SVC} - // 134-143 -- Reserved - // 144-150 -- R8_USR-R14_USR - // 151-157 -- R8_FIQ-R14_FIQ - // 158-159 -- R13_IRQ-R14_IRQ - // 160-161 -- R13_ABT-R14_ABT - // 162-163 -- R13_UND-R14_UND - // 164-165 -- R13_SVC-R14_SVC - // 166-191 -- Reserved - UNW_ARM_WC0 = 192, - UNW_ARM_WC1 = 193, - UNW_ARM_WC2 = 194, - UNW_ARM_WC3 = 195, - // 196-199 -- wC4-wC7 (Intel wireless MMX control) - // 200-255 -- Reserved - UNW_ARM_D0 = 256, - UNW_ARM_D1 = 257, - UNW_ARM_D2 = 258, - UNW_ARM_D3 = 259, - UNW_ARM_D4 = 260, - UNW_ARM_D5 = 261, - UNW_ARM_D6 = 262, - UNW_ARM_D7 = 263, - UNW_ARM_D8 = 264, - UNW_ARM_D9 = 265, - UNW_ARM_D10 = 266, - UNW_ARM_D11 = 267, - UNW_ARM_D12 = 268, - UNW_ARM_D13 = 269, - UNW_ARM_D14 = 270, - UNW_ARM_D15 = 271, - UNW_ARM_D16 = 272, - UNW_ARM_D17 = 273, - UNW_ARM_D18 = 274, - UNW_ARM_D19 = 275, - UNW_ARM_D20 = 276, - UNW_ARM_D21 = 277, - UNW_ARM_D22 = 278, - UNW_ARM_D23 = 279, - UNW_ARM_D24 = 280, - UNW_ARM_D25 = 281, - UNW_ARM_D26 = 282, - UNW_ARM_D27 = 283, - UNW_ARM_D28 = 284, - UNW_ARM_D29 = 285, - UNW_ARM_D30 = 286, - UNW_ARM_D31 = 287, - // 288-319 -- Reserved for VFP/Neon - // 320-8191 -- Reserved - // 8192-16383 -- Unspecified vendor co-processor register. -}; - -#endif diff --git a/include/mach-o/compact_unwind_encoding.h b/include/mach-o/compact_unwind_encoding.h deleted file mode 100644 index b71c2c8..0000000 --- a/include/mach-o/compact_unwind_encoding.h +++ /dev/null @@ -1,478 +0,0 @@ -//===------------------ mach-o/compact_unwind_encoding.h ------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -// -// Darwin's alternative to dwarf based unwind encodings. -// -//===----------------------------------------------------------------------===// - - -#ifndef __COMPACT_UNWIND_ENCODING__ -#define __COMPACT_UNWIND_ENCODING__ - -#include - -// -// 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. -// -// When the linker creates a final linked image, it will create a -// __TEXT,__unwind_info section. This section is a small and fast way for the -// 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 -// 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 -// compact unwind info. But that is fragile and no longer done. - - -// -// The compact unwind endoding is a 32-bit value which encoded in an -// architecture specific way, which registers to restore from where, and how -// to unwind out of the function. -// -typedef uint32_t compact_unwind_encoding_t; - - -// architecture independent bits -enum { - UNWIND_IS_NOT_FUNCTION_START = 0x80000000, - UNWIND_HAS_LSDA = 0x40000000, - UNWIND_PERSONALITY_MASK = 0x30000000, -}; - - - - -// -// x86 -// -// 1-bit: start -// 1-bit: has lsda -// 2-bit: personality index -// -// 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 -// frameless: -// 8-bits stack size -// 3-bits stack adjust -// 3-bits register count -// 10-bits register permutation -// -enum { - UNWIND_X86_MODE_MASK = 0x0F000000, - UNWIND_X86_MODE_EBP_FRAME = 0x01000000, - UNWIND_X86_MODE_STACK_IMMD = 0x02000000, - UNWIND_X86_MODE_STACK_IND = 0x03000000, - UNWIND_X86_MODE_DWARF = 0x04000000, - - UNWIND_X86_EBP_FRAME_REGISTERS = 0x00007FFF, - UNWIND_X86_EBP_FRAME_OFFSET = 0x00FF0000, - - UNWIND_X86_FRAMELESS_STACK_SIZE = 0x00FF0000, - UNWIND_X86_FRAMELESS_STACK_ADJUST = 0x0000E000, - UNWIND_X86_FRAMELESS_STACK_REG_COUNT = 0x00001C00, - UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF, - - UNWIND_X86_DWARF_SECTION_OFFSET = 0x00FFFFFF, -}; - -enum { - UNWIND_X86_REG_NONE = 0, - UNWIND_X86_REG_EBX = 1, - UNWIND_X86_REG_ECX = 2, - UNWIND_X86_REG_EDX = 3, - UNWIND_X86_REG_EDI = 4, - UNWIND_X86_REG_ESI = 5, - UNWIND_X86_REG_EBP = 6, -}; - -// -// For x86 there are four modes for the compact unwind encoding: -// UNWIND_X86_MODE_EBP_FRAME: -// EBP based frame where EBP is push on stack immediately after return address, -// then ESP is moved to EBP. Thus, to unwind ESP is restored with the current -// EPB value, then EBP is restored by popping off the stack, and the return -// is done by popping the stack once more into the pc. -// All non-volatile registers that need to be restored must have been saved -// in a small range in the stack that starts EBP-4 to EBP-1020. The offset/4 -// is encoded in the UNWIND_X86_EBP_FRAME_OFFSET bits. The registers saved -// are encoded in the UNWIND_X86_EBP_FRAME_REGISTERS bits as five 3-bit entries. -// Each entry contains which register to restore. -// UNWIND_X86_MODE_STACK_IMMD: -// A "frameless" (EBP not used as frame pointer) function with a small -// constant stack size. To return, a constant (encoded in the compact -// unwind encoding) is added to the ESP. Then the return is done by -// popping the stack into the pc. -// All non-volatile registers that need to be restored must have been saved -// on the stack immediately after the return address. The stack_size/4 is -// encoded in the UNWIND_X86_FRAMELESS_STACK_SIZE (max stack size is 1024). -// The number of registers saved is encoded in UNWIND_X86_FRAMELESS_STACK_REG_COUNT. -// UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION constains which registers were -// saved and their order. -// UNWIND_X86_MODE_STACK_IND: -// A "frameless" (EBP not used as frame pointer) function large constant -// stack size. This case is like the previous, except the stack size is too -// large to encode in the compact unwind encoding. Instead it requires that -// the function contains "subl $nnnnnnnn,ESP" in its prolog. The compact -// encoding contains the offset to the nnnnnnnn value in the function in -// 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. -// 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 -// function. -// -// The permutation encoding is a Lehmer code sequence encoded into a -// single variable-base number so we can encode the ordering of up to -// six registers in a 10-bit space. -// -// The following is the algorithm used to create the permutation encoding used -// with frameless stacks. It is passed the number of registers to be saved and -// an array of the register numbers saved. -// -//uint32_t permute_encode(uint32_t registerCount, const uint32_t registers[6]) -//{ -// uint32_t renumregs[6]; -// for (int i=6-registerCount; i < 6; ++i) { -// int countless = 0; -// for (int j=6-registerCount; j < i; ++j) { -// if ( registers[j] < registers[i] ) -// ++countless; -// } -// renumregs[i] = registers[i] - countless -1; -// } -// uint32_t permutationEncoding = 0; -// switch ( registerCount ) { -// case 6: -// permutationEncoding |= (120*renumregs[0] + 24*renumregs[1] -// + 6*renumregs[2] + 2*renumregs[3] -// + renumregs[4]); -// break; -// case 5: -// permutationEncoding |= (120*renumregs[1] + 24*renumregs[2] -// + 6*renumregs[3] + 2*renumregs[4] -// + renumregs[5]); -// break; -// case 4: -// permutationEncoding |= (60*renumregs[2] + 12*renumregs[3] -// + 3*renumregs[4] + renumregs[5]); -// break; -// case 3: -// permutationEncoding |= (20*renumregs[3] + 4*renumregs[4] -// + renumregs[5]); -// break; -// case 2: -// permutationEncoding |= (5*renumregs[4] + renumregs[5]); -// break; -// case 1: -// permutationEncoding |= (renumregs[5]); -// break; -// } -// return permutationEncoding; -//} -// - - - - -// -// x86_64 -// -// 1-bit: start -// 1-bit: has lsda -// 2-bit: personality index -// -// 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 -// frameless: -// 8-bits stack size -// 3-bits stack adjust -// 3-bits register count -// 10-bits register permutation -// -enum { - UNWIND_X86_64_MODE_MASK = 0x0F000000, - UNWIND_X86_64_MODE_RBP_FRAME = 0x01000000, - UNWIND_X86_64_MODE_STACK_IMMD = 0x02000000, - UNWIND_X86_64_MODE_STACK_IND = 0x03000000, - UNWIND_X86_64_MODE_DWARF = 0x04000000, - - UNWIND_X86_64_RBP_FRAME_REGISTERS = 0x00007FFF, - UNWIND_X86_64_RBP_FRAME_OFFSET = 0x00FF0000, - - UNWIND_X86_64_FRAMELESS_STACK_SIZE = 0x00FF0000, - UNWIND_X86_64_FRAMELESS_STACK_ADJUST = 0x0000E000, - UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT = 0x00001C00, - UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF, - - UNWIND_X86_64_DWARF_SECTION_OFFSET = 0x00FFFFFF, -}; - -enum { - UNWIND_X86_64_REG_NONE = 0, - UNWIND_X86_64_REG_RBX = 1, - UNWIND_X86_64_REG_R12 = 2, - UNWIND_X86_64_REG_R13 = 3, - UNWIND_X86_64_REG_R14 = 4, - UNWIND_X86_64_REG_R15 = 5, - UNWIND_X86_64_REG_RBP = 6, -}; -// -// For x86_64 there are four modes for the compact unwind encoding: -// UNWIND_X86_64_MODE_RBP_FRAME: -// RBP based frame where RBP is push on stack immediately after return address, -// then RSP is moved to RBP. Thus, to unwind RSP is restored with the current -// EPB value, then RBP is restored by popping off the stack, and the return -// is done by popping the stack once more into the pc. -// All non-volatile registers that need to be restored must have been saved -// in a small range in the stack that starts RBP-8 to RBP-2040. The offset/8 -// is encoded in the UNWIND_X86_64_RBP_FRAME_OFFSET bits. The registers saved -// are encoded in the UNWIND_X86_64_RBP_FRAME_REGISTERS bits as five 3-bit entries. -// Each entry contains which register to restore. -// UNWIND_X86_64_MODE_STACK_IMMD: -// A "frameless" (RBP not used as frame pointer) function with a small -// constant stack size. To return, a constant (encoded in the compact -// unwind encoding) is added to the RSP. Then the return is done by -// popping the stack into the pc. -// All non-volatile registers that need to be restored must have been saved -// on the stack immediately after the return address. The stack_size/8 is -// encoded in the UNWIND_X86_64_FRAMELESS_STACK_SIZE (max stack size is 2048). -// The number of registers saved is encoded in UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT. -// UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION constains which registers were -// saved and their order. -// UNWIND_X86_64_MODE_STACK_IND: -// A "frameless" (RBP not used as frame pointer) function large constant -// stack size. This case is like the previous, except the stack size is too -// large to encode in the compact unwind encoding. Instead it requires that -// the function contains "subq $nnnnnnnn,RSP" in its prolog. The compact -// encoding contains the offset to the nnnnnnnn value in the function in -// 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. -// 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 -// function. -// - - -// ARM64 -// -// 1-bit: start -// 1-bit: has lsda -// 2-bit: personality index -// -// 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 -// -enum { - UNWIND_ARM64_MODE_MASK = 0x0F000000, - UNWIND_ARM64_MODE_FRAMELESS = 0x02000000, - UNWIND_ARM64_MODE_DWARF = 0x03000000, - UNWIND_ARM64_MODE_FRAME = 0x04000000, - - UNWIND_ARM64_FRAME_X19_X20_PAIR = 0x00000001, - UNWIND_ARM64_FRAME_X21_X22_PAIR = 0x00000002, - UNWIND_ARM64_FRAME_X23_X24_PAIR = 0x00000004, - UNWIND_ARM64_FRAME_X25_X26_PAIR = 0x00000008, - UNWIND_ARM64_FRAME_X27_X28_PAIR = 0x00000010, - UNWIND_ARM64_FRAME_D8_D9_PAIR = 0x00000100, - UNWIND_ARM64_FRAME_D10_D11_PAIR = 0x00000200, - UNWIND_ARM64_FRAME_D12_D13_PAIR = 0x00000400, - UNWIND_ARM64_FRAME_D14_D15_PAIR = 0x00000800, - - UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK = 0x00FFF000, - UNWIND_ARM64_DWARF_SECTION_OFFSET = 0x00FFFFFF, -}; -// For arm64 there are three modes for the compact unwind encoding: -// UNWIND_ARM64_MODE_FRAME: -// This is a standard arm64 prolog where FP/LR are immediately pushed on the -// stack, then SP is copied to FP. If there are any non-volatile registers -// saved, then are copied into the stack frame in pairs in a contiguous -// range right below the saved FP/LR pair. Any subset of the five X pairs -// and four D pairs can be saved, but the memory layout must be in register -// number order. -// UNWIND_ARM64_MODE_FRAMELESS: -// A "frameless" leaf function, where FP/LR are not saved. The return address -// remains in LR throughout the function. If any non-volatile registers -// are saved, they must be pushed onto the stack before any stack space is -// allocated for local variables. The stack sized (including any saved -// non-volatile registers) divided by 16 is encoded in the bits -// 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. -// 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 -// function. -// - - - - - -//////////////////////////////////////////////////////////////////////////////// -// -// Relocatable Object Files: __LD,__compact_unwind -// -//////////////////////////////////////////////////////////////////////////////// - -// -// A compiler can generated compact unwind information for a function by adding -// a "row" to the __LD,__compact_unwind section. This section has the -// S_ATTR_DEBUG bit set, so the section will be ignored by older linkers. -// It is removed by the new linker, so never ends up in final executables. -// This section is a table, initially with one row per function (that needs -// unwind info). The table columns and some conceptual entries are: -// -// range-start pointer to start of function/range -// range-length -// compact-unwind-encoding 32-bit encoding -// personality-function or zero if no personality function -// lsda or zero if no LSDA data -// -// The length and encoding fields are 32-bits. The other are all pointer sized. -// -// In x86_64 assembly, these entry would look like: -// -// .section __LD,__compact_unwind,regular,debug -// -// #compact unwind for _foo -// .quad _foo -// .set L1,LfooEnd-_foo -// .long L1 -// .long 0x01010001 -// .quad 0 -// .quad 0 -// -// #compact unwind for _bar -// .quad _bar -// .set L2,LbarEnd-_bar -// .long L2 -// .long 0x01020011 -// .quad __gxx_personality -// .quad except_tab1 -// -// -// Notes: There is no need for any labels in the the __compact_unwind section. -// The use of the .set directive is to force the evaluation of the -// range-length at assembly time, instead of generating relocations. -// -// To support future compiler optimizations where which non-volatile registers -// are saved changes within a function (e.g. delay saving non-volatiles until -// necessary), there can by multiple lines in the __compact_unwind table for one -// function, each with a different (non-overlapping) range and each with -// different compact unwind encodings that correspond to the non-volatiles -// 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. -// The runtime will use which ever is available. -// -// Runtime support for compact unwind encodings are only available on 10.6 -// and later. So, the compiler should not generate it when targeting pre-10.6. - - - - -//////////////////////////////////////////////////////////////////////////////// -// -// Final Linked Images: __TEXT,__unwind_info -// -//////////////////////////////////////////////////////////////////////////////// - -// -// The __TEXT,__unwind_info section is laid out for an efficient two level lookup. -// The header of the section contains a coarse index that maps function address -// to the page (4096 byte block) containing the unwind info for that function. -// - -#define UNWIND_SECTION_VERSION 1 -struct unwind_info_section_header -{ - uint32_t version; // UNWIND_SECTION_VERSION - uint32_t commonEncodingsArraySectionOffset; - uint32_t commonEncodingsArrayCount; - uint32_t personalityArraySectionOffset; - uint32_t personalityArrayCount; - uint32_t indexSectionOffset; - uint32_t indexCount; - // compact_unwind_encoding_t[] - // uint32_t personalities[] - // unwind_info_section_header_index_entry[] - // unwind_info_section_header_lsda_index_entry[] -}; - -struct unwind_info_section_header_index_entry -{ - uint32_t functionOffset; - uint32_t secondLevelPagesSectionOffset; // section offset to start of regular or compress page - uint32_t lsdaIndexArraySectionOffset; // section offset to start of lsda_index array for this range -}; - -struct unwind_info_section_header_lsda_index_entry -{ - uint32_t functionOffset; - uint32_t lsdaOffset; -}; - -// -// There are two kinds of second level index pages: regular and compressed. -// A compressed page can hold up to 1021 entries, but it cannot be used -// if too many different encoding types are used. The regular page holds -// 511 entries. -// - -struct unwind_info_regular_second_level_entry -{ - uint32_t functionOffset; - compact_unwind_encoding_t encoding; -}; - -#define UNWIND_SECOND_LEVEL_REGULAR 2 -struct unwind_info_regular_second_level_page_header -{ - uint32_t kind; // UNWIND_SECOND_LEVEL_REGULAR - uint16_t entryPageOffset; - uint16_t entryCount; - // entry array -}; - -#define UNWIND_SECOND_LEVEL_COMPRESSED 3 -struct unwind_info_compressed_second_level_page_header -{ - uint32_t kind; // UNWIND_SECOND_LEVEL_COMPRESSED - uint16_t entryPageOffset; - uint16_t entryCount; - uint16_t encodingsPageOffset; - uint16_t encodingsCount; - // 32-bit entry array - // encodings array -}; - -#define UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET(entry) (entry & 0x00FFFFFF) -#define UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX(entry) ((entry >> 24) & 0xFF) - - - -#endif - diff --git a/include/unwind.h b/include/unwind.h deleted file mode 100644 index 86001bb..0000000 --- a/include/unwind.h +++ /dev/null @@ -1,329 +0,0 @@ -//===------------------------------- unwind.h -----------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -// -// C++ ABI Level 1 ABI documented at: -// http://mentorembedded.github.io/cxx-abi/abi-eh.html -// -//===----------------------------------------------------------------------===// - -#ifndef __UNWIND_H__ -#define __UNWIND_H__ - -#include -#include - -#if defined(__APPLE__) -#define LIBUNWIND_UNAVAIL __attribute__ (( unavailable )) -#else -#define LIBUNWIND_UNAVAIL -#endif - -#include <__cxxabi_config.h> - -typedef enum { - _URC_NO_REASON = 0, - _URC_OK = 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, -#if LIBCXXABI_ARM_EHABI - _URC_FAILURE = 9 -#endif -} _Unwind_Reason_Code; - -typedef enum { - _UA_SEARCH_PHASE = 1, - _UA_CLEANUP_PHASE = 2, - _UA_HANDLER_FRAME = 4, - _UA_FORCE_UNWIND = 8, - _UA_END_OF_STACK = 16 // gcc extension to C++ ABI -} _Unwind_Action; - -typedef struct _Unwind_Context _Unwind_Context; // opaque - -#if LIBCXXABI_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; -/* Undocumented flag for force unwinding. */ -static const _Unwind_State _US_FORCE_UNWIND = 8; - -typedef uint32_t _Unwind_EHT_Header; - -struct _Unwind_Control_Block; -typedef struct _Unwind_Control_Block _Unwind_Control_Block; -typedef struct _Unwind_Control_Block _Unwind_Exception; /* Alias */ - -struct _Unwind_Control_Block { - uint64_t exception_class; - void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block*); - - /* Unwinder cache, private fields for the unwinder's use */ - struct { - uint32_t reserved1; /* init reserved1 to 0, then don't touch */ - uint32_t reserved2; - uint32_t reserved3; - uint32_t reserved4; - uint32_t reserved5; - } unwinder_cache; - - /* Propagation barrier cache (valid after phase 1): */ - struct { - uint32_t sp; - uint32_t bitpattern[5]; - } barrier_cache; - - /* Cleanup cache (preserved over cleanup): */ - struct { - uint32_t bitpattern[4]; - } cleanup_cache; - - /* Pr cache (for pr's benefit): */ - struct { - uint32_t fnstart; /* function start address */ - _Unwind_EHT_Header* ehtp; /* pointer to EHT entry header word */ - uint32_t additional; - uint32_t reserved1; - } pr_cache; - - long long int :0; /* Enforce the 8-byte alignment */ -}; - -typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) - (_Unwind_State state, - _Unwind_Exception* exceptionObject, - struct _Unwind_Context* context); - -typedef _Unwind_Reason_Code (*__personality_routine) - (_Unwind_State state, - _Unwind_Exception* exceptionObject, - struct _Unwind_Context* context); -#else -struct _Unwind_Context; // opaque -struct _Unwind_Exception; // forward declaration -typedef struct _Unwind_Exception _Unwind_Exception; - -struct _Unwind_Exception { - uint64_t exception_class; - void (*exception_cleanup)(_Unwind_Reason_Code reason, - _Unwind_Exception *exc); - 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. - uint32_t reserved[3]; -#endif -}; - -typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) - (int version, - _Unwind_Action actions, - uint64_t exceptionClass, - _Unwind_Exception* exceptionObject, - struct _Unwind_Context* context, - void* stop_parameter ); - -typedef _Unwind_Reason_Code (*__personality_routine) - (int version, - _Unwind_Action actions, - uint64_t exceptionClass, - _Unwind_Exception* exceptionObject, - struct _Unwind_Context* context); -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -// -// The following are the base functions documented by the C++ ABI -// -#ifdef __USING_SJLJ_EXCEPTIONS__ -extern _Unwind_Reason_Code - _Unwind_SjLj_RaiseException(_Unwind_Exception *exception_object); -extern void _Unwind_SjLj_Resume(_Unwind_Exception *exception_object); -#else -extern _Unwind_Reason_Code - _Unwind_RaiseException(_Unwind_Exception *exception_object); -extern void _Unwind_Resume(_Unwind_Exception *exception_object); -#endif -extern void _Unwind_DeleteException(_Unwind_Exception *exception_object); - -#if LIBCXXABI_ARM_EHABI -typedef enum { - _UVRSC_CORE = 0, /* integer register */ - _UVRSC_VFP = 1, /* vfp */ - _UVRSC_WMMXD = 3, /* Intel WMMX data register */ - _UVRSC_WMMXC = 4 /* Intel WMMX control register */ -} _Unwind_VRS_RegClass; - -typedef enum { - _UVRSD_UINT32 = 0, - _UVRSD_VFPX = 1, - _UVRSD_UINT64 = 3, - _UVRSD_FLOAT = 4, - _UVRSD_DOUBLE = 5 -} _Unwind_VRS_DataRepresentation; - -typedef enum { - _UVRSR_OK = 0, - _UVRSR_NOT_IMPLEMENTED = 1, - _UVRSR_FAILED = 2 -} _Unwind_VRS_Result; - -extern void _Unwind_Complete(_Unwind_Exception* exception_object); - -extern _Unwind_VRS_Result -_Unwind_VRS_Get(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, - uint32_t regno, _Unwind_VRS_DataRepresentation representation, - void *valuep); - -extern _Unwind_VRS_Result -_Unwind_VRS_Set(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, - uint32_t regno, _Unwind_VRS_DataRepresentation representation, - void *valuep); - -extern _Unwind_VRS_Result -_Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass, - uint32_t discriminator, - _Unwind_VRS_DataRepresentation representation); -#endif - -extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index); -extern void _Unwind_SetGR(struct _Unwind_Context *context, int index, - uintptr_t new_value); -extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context); -extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value); - -extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context); -extern uintptr_t - _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context); -#ifdef __USING_SJLJ_EXCEPTIONS__ -extern _Unwind_Reason_Code - _Unwind_SjLj_ForcedUnwind(_Unwind_Exception *exception_object, - _Unwind_Stop_Fn stop, void *stop_parameter); -#else -extern _Unwind_Reason_Code - _Unwind_ForcedUnwind(_Unwind_Exception *exception_object, - _Unwind_Stop_Fn stop, void *stop_parameter); -#endif - -#ifdef __USING_SJLJ_EXCEPTIONS__ -typedef struct _Unwind_FunctionContext *_Unwind_FunctionContext_t; -extern void _Unwind_SjLj_Register(_Unwind_FunctionContext_t fc); -extern void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t fc); -#endif - -// -// The following are semi-suppoted extensions to the C++ ABI -// - -// -// called by __cxa_rethrow(). -// -#ifdef __USING_SJLJ_EXCEPTIONS__ -extern _Unwind_Reason_Code - _Unwind_SjLj_Resume_or_Rethrow(_Unwind_Exception *exception_object); -#else -extern _Unwind_Reason_Code - _Unwind_Resume_or_Rethrow(_Unwind_Exception *exception_object); -#endif - -// _Unwind_Backtrace() is a gcc extension that walks the stack and calls the -// _Unwind_Trace_Fn once per frame until it reaches the bottom of the stack -// or the _Unwind_Trace_Fn function returns something other than _URC_NO_REASON. -typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context *, - void *); -extern _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void *); - -// _Unwind_GetCFA is a gcc extension that can be called from within a -// personality handler to get the CFA (stack pointer before call) of -// current frame. -extern uintptr_t _Unwind_GetCFA(struct _Unwind_Context *); - - -// _Unwind_GetIPInfo is a gcc extension that can be called from within a -// personality handler. Similar to _Unwind_GetIP() but also returns in -// *ipBefore a non-zero value if the instruction pointer is at or before the -// instruction causing the unwind. Normally, in a function call, the IP returned -// is the return address which is after the call instruction and may be past the -// end of the function containing the call instruction. -extern uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context, - int *ipBefore); - - -// __register_frame() is used with dynamically generated code to register the -// FDE for a generated (JIT) code. The FDE must use pc-rel addressing to point -// to its function and optional LSDA. -// __register_frame() has existed in all versions of Mac OS X, but in 10.4 and -// 10.5 it was buggy and did not actually register the FDE with the unwinder. -// In 10.6 and later it does register properly. -extern void __register_frame(const void *fde); -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 -// function will only work if the target function has an FDE but no compact -// unwind info. -struct dwarf_eh_bases { - uintptr_t tbase; - uintptr_t dbase; - uintptr_t func; -}; -extern const void *_Unwind_Find_FDE(const void *pc, struct dwarf_eh_bases *); - - -// 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). -// 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); - -// Mac OS X does not support text-rel and data-rel addressing so these functions -// are unimplemented -extern uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context *context) - LIBUNWIND_UNAVAIL; -extern uintptr_t _Unwind_GetTextRelBase(struct _Unwind_Context *context) - LIBUNWIND_UNAVAIL; - -// Mac OS X 10.4 and 10.5 had implementations of these functions in -// libgcc_s.dylib, but they never worked. -/// These functions are no longer available on Mac OS X. -extern void __register_frame_info_bases(const void *fde, void *ob, void *tb, - void *db) LIBUNWIND_UNAVAIL; -extern void __register_frame_info(const void *fde, void *ob) - LIBUNWIND_UNAVAIL; -extern void __register_frame_info_table_bases(const void *fde, void *ob, - void *tb, void *db) - LIBUNWIND_UNAVAIL; -extern void __register_frame_info_table(const void *fde, void *ob) - LIBUNWIND_UNAVAIL; -extern void __register_frame_table(const void *fde) - LIBUNWIND_UNAVAIL; -extern void *__deregister_frame_info(const void *fde) - LIBUNWIND_UNAVAIL; -extern void *__deregister_frame_info_bases(const void *fde) - LIBUNWIND_UNAVAIL; - -#ifdef __cplusplus -} -#endif - -#endif // __UNWIND_H__ -- cgit v1.2.3