nillerusr
2 years ago
8 changed files with 1525 additions and 17 deletions
@ -0,0 +1,59 @@ |
|||||||
|
//===------------------------- __libunwind_config.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.
|
||||||
|
//
|
||||||
|
//===----------------------------------------------------------------------===//
|
||||||
|
|
||||||
|
#ifndef ____LIBUNWIND_CONFIG_H__ |
||||||
|
#define ____LIBUNWIND_CONFIG_H__ |
||||||
|
|
||||||
|
#if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \ |
||||||
|
!defined(__ARM_DWARF_EH__) |
||||||
|
#define _LIBUNWIND_ARM_EHABI 1 |
||||||
|
#else |
||||||
|
#define _LIBUNWIND_ARM_EHABI 0 |
||||||
|
#endif |
||||||
|
|
||||||
|
#if defined(_LIBUNWIND_IS_NATIVE_ONLY) |
||||||
|
# if defined(__i386__) |
||||||
|
# define _LIBUNWIND_TARGET_I386 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 8 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 19 |
||||||
|
# elif defined(__x86_64__) |
||||||
|
# define _LIBUNWIND_TARGET_X86_64 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 21 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 33 |
||||||
|
# elif defined(__ppc__) |
||||||
|
# define _LIBUNWIND_TARGET_PPC 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 117 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 128 |
||||||
|
# elif defined(__aarch64__) |
||||||
|
# define _LIBUNWIND_TARGET_AARCH64 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 66 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 78 |
||||||
|
# elif defined(__arm__) |
||||||
|
# define _LIBUNWIND_TARGET_ARM 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 60 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 67 |
||||||
|
# elif defined(__or1k__) |
||||||
|
# define _LIBUNWIND_TARGET_OR1K 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 16 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 28 |
||||||
|
# else |
||||||
|
# error "Unsupported architecture." |
||||||
|
# endif |
||||||
|
#else // !_LIBUNWIND_IS_NATIVE_ONLY
|
||||||
|
# define _LIBUNWIND_TARGET_I386 1 |
||||||
|
# define _LIBUNWIND_TARGET_X86_64 1 |
||||||
|
# define _LIBUNWIND_TARGET_PPC 1 |
||||||
|
# define _LIBUNWIND_TARGET_AARCH64 1 |
||||||
|
# define _LIBUNWIND_TARGET_ARM 1 |
||||||
|
# define _LIBUNWIND_TARGET_OR1K 1 |
||||||
|
# define _LIBUNWIND_CONTEXT_SIZE 128 |
||||||
|
# define _LIBUNWIND_CURSOR_SIZE 140 |
||||||
|
#endif // _LIBUNWIND_IS_NATIVE_ONLY
|
||||||
|
|
||||||
|
#endif // ____LIBUNWIND_CONFIG_H__
|
@ -0,0 +1,536 @@ |
|||||||
|
//===---------------------------- 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 <__libunwind_config.h> |
||||||
|
|
||||||
|
#include <stdint.h> |
||||||
|
#include <stddef.h> |
||||||
|
|
||||||
|
#ifdef __APPLE__ |
||||||
|
#include <Availability.h> |
||||||
|
#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[_LIBUNWIND_CONTEXT_SIZE]; |
||||||
|
}; |
||||||
|
typedef struct unw_context_t unw_context_t; |
||||||
|
|
||||||
|
struct unw_cursor_t { |
||||||
|
uint64_t data[_LIBUNWIND_CURSOR_SIZE]; |
||||||
|
}; |
||||||
|
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 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.
|
||||||
|
}; |
||||||
|
|
||||||
|
// OpenRISC1000 register numbers
|
||||||
|
enum { |
||||||
|
UNW_OR1K_R0 = 0, |
||||||
|
UNW_OR1K_R1 = 1, |
||||||
|
UNW_OR1K_R2 = 2, |
||||||
|
UNW_OR1K_R3 = 3, |
||||||
|
UNW_OR1K_R4 = 4, |
||||||
|
UNW_OR1K_R5 = 5, |
||||||
|
UNW_OR1K_R6 = 6, |
||||||
|
UNW_OR1K_R7 = 7, |
||||||
|
UNW_OR1K_R8 = 8, |
||||||
|
UNW_OR1K_R9 = 9, |
||||||
|
UNW_OR1K_R10 = 10, |
||||||
|
UNW_OR1K_R11 = 11, |
||||||
|
UNW_OR1K_R12 = 12, |
||||||
|
UNW_OR1K_R13 = 13, |
||||||
|
UNW_OR1K_R14 = 14, |
||||||
|
UNW_OR1K_R15 = 15, |
||||||
|
UNW_OR1K_R16 = 16, |
||||||
|
UNW_OR1K_R17 = 17, |
||||||
|
UNW_OR1K_R18 = 18, |
||||||
|
UNW_OR1K_R19 = 19, |
||||||
|
UNW_OR1K_R20 = 20, |
||||||
|
UNW_OR1K_R21 = 21, |
||||||
|
UNW_OR1K_R22 = 22, |
||||||
|
UNW_OR1K_R23 = 23, |
||||||
|
UNW_OR1K_R24 = 24, |
||||||
|
UNW_OR1K_R25 = 25, |
||||||
|
UNW_OR1K_R26 = 26, |
||||||
|
UNW_OR1K_R27 = 27, |
||||||
|
UNW_OR1K_R28 = 28, |
||||||
|
UNW_OR1K_R29 = 29, |
||||||
|
UNW_OR1K_R30 = 30, |
||||||
|
UNW_OR1K_R31 = 31, |
||||||
|
}; |
||||||
|
|
||||||
|
#endif |
@ -0,0 +1,478 @@ |
|||||||
|
//===------------------ 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 <stdint.h> |
||||||
|
|
||||||
|
//
|
||||||
|
// 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 |
||||||
|
|
@ -0,0 +1,372 @@ |
|||||||
|
//===------------------------------- 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 <__libunwind_config.h> |
||||||
|
|
||||||
|
#include <stdint.h> |
||||||
|
#include <stddef.h> |
||||||
|
|
||||||
|
#if defined(__APPLE__) |
||||||
|
#define LIBUNWIND_UNAVAIL __attribute__ (( unavailable )) |
||||||
|
#else |
||||||
|
#define LIBUNWIND_UNAVAIL |
||||||
|
#endif |
||||||
|
|
||||||
|
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 _LIBUNWIND_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 _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; |
||||||
|
/* 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 _LIBUNWIND_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 |
||||||
|
|
||||||
|
#if !_LIBUNWIND_ARM_EHABI |
||||||
|
|
||||||
|
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); |
||||||
|
|
||||||
|
#else // _LIBUNWIND_ARM_EHABI
|
||||||
|
|
||||||
|
#if defined(_LIBUNWIND_UNWIND_LEVEL1_EXTERNAL_LINKAGE) |
||||||
|
#define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 extern |
||||||
|
#else |
||||||
|
#define _LIBUNWIND_EXPORT_UNWIND_LEVEL1 static __inline__ |
||||||
|
#endif |
||||||
|
|
||||||
|
// These are de facto helper functions for ARM, which delegate the function
|
||||||
|
// calls to _Unwind_VRS_Get/Set(). These are not a part of ARM EHABI
|
||||||
|
// specification, thus these function MUST be inlined. Please don't replace
|
||||||
|
// these with the "extern" function declaration; otherwise, the program
|
||||||
|
// including this <unwind.h> header won't be ABI compatible and will result in
|
||||||
|
// link error when we are linking the program with libgcc.
|
||||||
|
|
||||||
|
_LIBUNWIND_EXPORT_UNWIND_LEVEL1 |
||||||
|
uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index) { |
||||||
|
uintptr_t value = 0; |
||||||
|
_Unwind_VRS_Get(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value); |
||||||
|
return value; |
||||||
|
} |
||||||
|
|
||||||
|
_LIBUNWIND_EXPORT_UNWIND_LEVEL1 |
||||||
|
void _Unwind_SetGR(struct _Unwind_Context *context, int index, |
||||||
|
uintptr_t value) { |
||||||
|
_Unwind_VRS_Set(context, _UVRSC_CORE, (uint32_t)index, _UVRSD_UINT32, &value); |
||||||
|
} |
||||||
|
|
||||||
|
_LIBUNWIND_EXPORT_UNWIND_LEVEL1 |
||||||
|
uintptr_t _Unwind_GetIP(struct _Unwind_Context *context) { |
||||||
|
// remove the thumb-bit before returning
|
||||||
|
return _Unwind_GetGR(context, 15) & (~(uintptr_t)0x1); |
||||||
|
} |
||||||
|
|
||||||
|
_LIBUNWIND_EXPORT_UNWIND_LEVEL1 |
||||||
|
void _Unwind_SetIP(struct _Unwind_Context *context, uintptr_t value) { |
||||||
|
uintptr_t thumb_bit = _Unwind_GetGR(context, 15) & ((uintptr_t)0x1); |
||||||
|
_Unwind_SetGR(context, 15, value | thumb_bit); |
||||||
|
} |
||||||
|
#endif // _LIBUNWIND_ARM_EHABI
|
||||||
|
|
||||||
|
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__
|
Loading…
Reference in new issue