blob: 354e1141512427d0d2e827d8d372cb0495d77e76 [file] [log] [blame]
//===----------------------------- 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.
//
//
// Defines macros used within libunwind project.
//
//===----------------------------------------------------------------------===//
#ifndef LIBUNWIND_CONFIG_H
#define LIBUNWIND_CONFIG_H
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
// Define static_assert() unless already defined by compiler.
#ifndef __has_feature
#define __has_feature(__x) 0
#endif
#if !(__has_feature(cxx_static_assert)) && !defined(static_assert)
#define static_assert(__b, __m) \
extern int compile_time_assert_failed[ ( __b ) ? 1 : -1 ] \
__attribute__( ( unused ) );
#endif
// Platform specific configuration defines.
#ifdef __APPLE__
#if defined(FOR_DYLD)
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 0
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 0
#else
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 0
#endif
#else
#if defined(__ARM_DWARF_EH__) || !defined(__arm__)
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 0
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 1
#else
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 0
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 0
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 0
#endif
#endif
// FIXME: these macros are not correct for COFF targets
#define _LIBUNWIND_EXPORT __attribute__((visibility("default")))
#define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden")))
#if (defined(__APPLE__) && defined(__arm__)) || defined(__USING_SJLJ_EXCEPTIONS__)
#define _LIBUNWIND_BUILD_SJLJ_APIS 1
#else
#define _LIBUNWIND_BUILD_SJLJ_APIS 0
#endif
#if defined(__i386__) || defined(__x86_64__)
#define _LIBUNWIND_SUPPORT_FRAME_APIS 1
#else
#define _LIBUNWIND_SUPPORT_FRAME_APIS 0
#endif
#if defined(__i386__) || defined(__x86_64__) || \
(!defined(__APPLE__) && defined(__arm__)) || \
(defined(__arm64__) || defined(__aarch64__)) || \
(defined(__APPLE__) && defined(__mips__))
#define _LIBUNWIND_BUILD_ZERO_COST_APIS 1
#else
#define _LIBUNWIND_BUILD_ZERO_COST_APIS 0
#endif
#define _LIBUNWIND_ABORT(msg) \
do { \
fprintf(stderr, "libunwind: %s %s:%d - %s\n", __func__, __FILE__, \
__LINE__, msg); \
fflush(stderr); \
abort(); \
} while (0)
#define _LIBUNWIND_LOG(msg, ...) fprintf(stderr, "libunwind: " msg "\n", __VA_ARGS__)
// Macros that define away in non-Debug builds
#ifdef NDEBUG
#define _LIBUNWIND_DEBUG_LOG(msg, ...)
#define _LIBUNWIND_TRACE_API(msg, ...)
#define _LIBUNWIND_TRACING_UNWINDING 0
#define _LIBUNWIND_TRACE_UNWINDING(msg, ...)
#define _LIBUNWIND_LOG_NON_ZERO(x) x
#else
#ifdef __cplusplus
extern "C" {
#endif
extern bool logAPIs();
extern bool logUnwinding();
#ifdef __cplusplus
}
#endif
#define _LIBUNWIND_DEBUG_LOG(msg, ...) _LIBUNWIND_LOG(msg, __VA_ARGS__)
#define _LIBUNWIND_LOG_NON_ZERO(x) \
do { \
int _err = x; \
if ( _err != 0 ) \
_LIBUNWIND_LOG("" #x "=%d in %s", _err, __FUNCTION__); \
} while (0)
#define _LIBUNWIND_TRACE_API(msg, ...) \
do { \
if ( logAPIs() ) _LIBUNWIND_LOG(msg, __VA_ARGS__); \
} while(0)
#define _LIBUNWIND_TRACE_UNWINDING(msg, ...) \
do { \
if ( logUnwinding() ) _LIBUNWIND_LOG(msg, __VA_ARGS__); \
} while(0)
#define _LIBUNWIND_TRACING_UNWINDING logUnwinding()
#endif
#ifdef __cplusplus
// Used to fit UnwindCursor and Registers_xxx types against unw_context_t /
// unw_cursor_t sized memory blocks.
#if defined(_LIBUNWIND_IS_NATIVE_ONLY)
# define COMP_OP ==
#else
# define COMP_OP <
#endif
template <typename _Type, typename _Mem>
struct check_fit {
template <typename T>
struct blk_count {
static const size_t count =
(sizeof(T) + sizeof(uint64_t) - 1) / sizeof(uint64_t);
};
static const bool does_fit =
(blk_count<_Type>::count COMP_OP blk_count<_Mem>::count);
};
#undef COMP_OP
#endif // __cplusplus
#endif // LIBUNWIND_CONFIG_H