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macOS libc headers: add mach-o/dyld.h

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libcxx depends on it
This commit is contained in:
Andrew Kelley
2020-11-08 19:51:30 -08:00
parent 25e78bd007
commit 1213e26ba8
7 changed files with 2824 additions and 0 deletions
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lib/libc/include/x86_64-macos-gnu/architecture/byte_order.h
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/*
* Copyright (c) 1999-2008 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1992 NeXT Computer, Inc.
*
* Byte ordering conversion.
*
*/
#ifndef _ARCHITECTURE_BYTE_ORDER_H_
#define _ARCHITECTURE_BYTE_ORDER_H_
/*
* Please note that the byte ordering functions in this file are deprecated.
* A replacement API exists in libkern/OSByteOrder.h
*/
#include <libkern/OSByteOrder.h>
typedef unsigned long NXSwappedFloat;
typedef unsigned long long NXSwappedDouble;
static __inline__ __attribute__((deprecated))
unsigned short
NXSwapShort(
unsigned short inv
)
{
return (unsigned short)OSSwapInt16((uint16_t)inv);
}
static __inline__ __attribute__((deprecated))
unsigned int
NXSwapInt(
unsigned int inv
)
{
return (unsigned int)OSSwapInt32((uint32_t)inv);
}
static __inline__ __attribute__((deprecated))
unsigned long
NXSwapLong(
unsigned long inv
)
{
return (unsigned long)OSSwapInt32((uint32_t)inv);
}
static __inline__ __attribute__((deprecated))
unsigned long long
NXSwapLongLong(
unsigned long long inv
)
{
return (unsigned long long)OSSwapInt64((uint64_t)inv);
}
static __inline__ __attribute__((deprecated))
NXSwappedFloat
NXConvertHostFloatToSwapped(float x)
{
union fconv {
float number;
NXSwappedFloat sf;
} u;
u.number = x;
return u.sf;
}
static __inline__ __attribute__((deprecated))
float
NXConvertSwappedFloatToHost(NXSwappedFloat x)
{
union fconv {
float number;
NXSwappedFloat sf;
} u;
u.sf = x;
return u.number;
}
static __inline__ __attribute__((deprecated))
NXSwappedDouble
NXConvertHostDoubleToSwapped(double x)
{
union dconv {
double number;
NXSwappedDouble sd;
} u;
u.number = x;
return u.sd;
}
static __inline__ __attribute__((deprecated))
double
NXConvertSwappedDoubleToHost(NXSwappedDouble x)
{
union dconv {
double number;
NXSwappedDouble sd;
} u;
u.sd = x;
return u.number;
}
static __inline__ __attribute__((deprecated))
NXSwappedFloat
NXSwapFloat(NXSwappedFloat x)
{
return (NXSwappedFloat)OSSwapInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
NXSwappedDouble
NXSwapDouble(NXSwappedDouble x)
{
return (NXSwappedDouble)OSSwapInt64((uint64_t)x);
}
/*
* Identify the byte order
* of the current host.
*/
enum NXByteOrder {
NX_UnknownByteOrder,
NX_LittleEndian,
NX_BigEndian
};
static __inline__
enum NXByteOrder
NXHostByteOrder(void)
{
#if defined(__LITTLE_ENDIAN__)
return NX_LittleEndian;
#elif defined(__BIG_ENDIAN__)
return NX_BigEndian;
#else
return NX_UnknownByteOrder;
#endif
}
static __inline__ __attribute__((deprecated))
unsigned short
NXSwapBigShortToHost(
unsigned short x
)
{
return (unsigned short)OSSwapBigToHostInt16((uint16_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned int
NXSwapBigIntToHost(
unsigned int x
)
{
return (unsigned int)OSSwapBigToHostInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long
NXSwapBigLongToHost(
unsigned long x
)
{
return (unsigned long)OSSwapBigToHostInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long long
NXSwapBigLongLongToHost(
unsigned long long x
)
{
return (unsigned long long)OSSwapBigToHostInt64((uint64_t)x);
}
static __inline__ __attribute__((deprecated))
double
NXSwapBigDoubleToHost(
NXSwappedDouble x
)
{
return NXConvertSwappedDoubleToHost((NXSwappedDouble)OSSwapBigToHostInt64((uint64_t)x));
}
static __inline__ __attribute__((deprecated))
float
NXSwapBigFloatToHost(
NXSwappedFloat x
)
{
return NXConvertSwappedFloatToHost((NXSwappedFloat)OSSwapBigToHostInt32((uint32_t)x));
}
static __inline__ __attribute__((deprecated))
unsigned short
NXSwapHostShortToBig(
unsigned short x
)
{
return (unsigned short)OSSwapHostToBigInt16((uint16_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned int
NXSwapHostIntToBig(
unsigned int x
)
{
return (unsigned int)OSSwapHostToBigInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long
NXSwapHostLongToBig(
unsigned long x
)
{
return (unsigned long)OSSwapHostToBigInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long long
NXSwapHostLongLongToBig(
unsigned long long x
)
{
return (unsigned long long)OSSwapHostToBigInt64((uint64_t)x);
}
static __inline__ __attribute__((deprecated))
NXSwappedDouble
NXSwapHostDoubleToBig(
double x
)
{
return (NXSwappedDouble)OSSwapHostToBigInt64((uint64_t)NXConvertHostDoubleToSwapped(x));
}
static __inline__ __attribute__((deprecated))
NXSwappedFloat
NXSwapHostFloatToBig(
float x
)
{
return (NXSwappedFloat)OSSwapHostToBigInt32((uint32_t)NXConvertHostFloatToSwapped(x));
}
static __inline__ __attribute__((deprecated))
unsigned short
NXSwapLittleShortToHost(
unsigned short x
)
{
return (unsigned short)OSSwapLittleToHostInt16((uint16_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned int
NXSwapLittleIntToHost(
unsigned int x
)
{
return (unsigned int)OSSwapLittleToHostInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long
NXSwapLittleLongToHost(
unsigned long x
)
{
return (unsigned long)OSSwapLittleToHostInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long long
NXSwapLittleLongLongToHost(
unsigned long long x
)
{
return (unsigned long long)OSSwapLittleToHostInt64((uint64_t)x);
}
static __inline__ __attribute__((deprecated))
double
NXSwapLittleDoubleToHost(
NXSwappedDouble x
)
{
return NXConvertSwappedDoubleToHost((NXSwappedDouble)OSSwapLittleToHostInt64((uint64_t)x));
}
static __inline__ __attribute__((deprecated))
float
NXSwapLittleFloatToHost(
NXSwappedFloat x
)
{
return NXConvertSwappedFloatToHost((NXSwappedFloat)OSSwapLittleToHostInt32((uint32_t)x));
}
static __inline__ __attribute__((deprecated))
unsigned short
NXSwapHostShortToLittle(
unsigned short x
)
{
return (unsigned short)OSSwapHostToLittleInt16((uint16_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned int
NXSwapHostIntToLittle(
unsigned int x
)
{
return (unsigned int)OSSwapHostToLittleInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long
NXSwapHostLongToLittle(
unsigned long x
)
{
return (unsigned long)OSSwapHostToLittleInt32((uint32_t)x);
}
static __inline__ __attribute__((deprecated))
unsigned long long
NXSwapHostLongLongToLittle(
unsigned long long x
)
{
return (unsigned long long)OSSwapHostToLittleInt64((uint64_t)x);
}
static __inline__ __attribute__((deprecated))
NXSwappedDouble
NXSwapHostDoubleToLittle(
double x
)
{
return (NXSwappedDouble)OSSwapHostToLittleInt64((uint64_t)NXConvertHostDoubleToSwapped(x));
}
static __inline__ __attribute__((deprecated))
NXSwappedFloat
NXSwapHostFloatToLittle(
float x
)
{
return (NXSwappedFloat)OSSwapHostToLittleInt32((uint32_t)NXConvertHostFloatToSwapped(x));
}
#endif /* _ARCHITECTURE_BYTE_ORDER_H_ */
lib/libc/include/x86_64-macos-gnu/libkern/OSByteOrder.h
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/*
* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _OS_OSBYTEORDER_H
#define _OS_OSBYTEORDER_H
#include <stdint.h>
#include <libkern/_OSByteOrder.h>
/* Macros for swapping constant values in the preprocessing stage. */
#define OSSwapConstInt16(x) __DARWIN_OSSwapConstInt16(x)
#define OSSwapConstInt32(x) __DARWIN_OSSwapConstInt32(x)
#define OSSwapConstInt64(x) __DARWIN_OSSwapConstInt64(x)
#if defined(__GNUC__)
#if (defined(__i386__) || defined(__x86_64__))
#include <libkern/i386/OSByteOrder.h>
#else
#include <libkern/machine/OSByteOrder.h>
#endif
#else /* ! __GNUC__ */
#include <libkern/machine/OSByteOrder.h>
#endif /* __GNUC__ */
#define OSSwapInt16(x) __DARWIN_OSSwapInt16(x)
#define OSSwapInt32(x) __DARWIN_OSSwapInt32(x)
#define OSSwapInt64(x) __DARWIN_OSSwapInt64(x)
enum {
OSUnknownByteOrder,
OSLittleEndian,
OSBigEndian
};
OS_INLINE
int32_t
OSHostByteOrder(void)
{
#if defined(__LITTLE_ENDIAN__)
return OSLittleEndian;
#elif defined(__BIG_ENDIAN__)
return OSBigEndian;
#else
return OSUnknownByteOrder;
#endif
}
#define OSReadBigInt(x, y) OSReadBigInt32(x, y)
#define OSWriteBigInt(x, y, z) OSWriteBigInt32(x, y, z)
#define OSSwapBigToHostInt(x) OSSwapBigToHostInt32(x)
#define OSSwapHostToBigInt(x) OSSwapHostToBigInt32(x)
#define OSReadLittleInt(x, y) OSReadLittleInt32(x, y)
#define OSWriteLittleInt(x, y, z) OSWriteLittleInt32(x, y, z)
#define OSSwapHostToLittleInt(x) OSSwapHostToLittleInt32(x)
#define OSSwapLittleToHostInt(x) OSSwapLittleToHostInt32(x)
/* Functions for loading native endian values. */
OS_INLINE
uint16_t
_OSReadInt16(
const volatile void * base,
uintptr_t byteOffset
)
{
return *(volatile uint16_t *)((uintptr_t)base + byteOffset);
}
OS_INLINE
uint32_t
_OSReadInt32(
const volatile void * base,
uintptr_t byteOffset
)
{
return *(volatile uint32_t *)((uintptr_t)base + byteOffset);
}
OS_INLINE
uint64_t
_OSReadInt64(
const volatile void * base,
uintptr_t byteOffset
)
{
return *(volatile uint64_t *)((uintptr_t)base + byteOffset);
}
/* Functions for storing native endian values. */
OS_INLINE
void
_OSWriteInt16(
volatile void * base,
uintptr_t byteOffset,
uint16_t data
)
{
*(volatile uint16_t *)((uintptr_t)base + byteOffset) = data;
}
OS_INLINE
void
_OSWriteInt32(
volatile void * base,
uintptr_t byteOffset,
uint32_t data
)
{
*(volatile uint32_t *)((uintptr_t)base + byteOffset) = data;
}
OS_INLINE
void
_OSWriteInt64(
volatile void * base,
uintptr_t byteOffset,
uint64_t data
)
{
*(volatile uint64_t *)((uintptr_t)base + byteOffset) = data;
}
#if defined(__BIG_ENDIAN__)
/* Functions for loading big endian to host endianess. */
#define OSReadBigInt16(base, byteOffset) _OSReadInt16(base, byteOffset)
#define OSReadBigInt32(base, byteOffset) _OSReadInt32(base, byteOffset)
#define OSReadBigInt64(base, byteOffset) _OSReadInt64(base, byteOffset)
/* Functions for storing host endianess to big endian. */
#define OSWriteBigInt16(base, byteOffset, data) _OSWriteInt16(base, byteOffset, data)
#define OSWriteBigInt32(base, byteOffset, data) _OSWriteInt32(base, byteOffset, data)
#define OSWriteBigInt64(base, byteOffset, data) _OSWriteInt64(base, byteOffset, data)
/* Functions for loading little endian to host endianess. */
#define OSReadLittleInt16(base, byteOffset) OSReadSwapInt16(base, byteOffset)
#define OSReadLittleInt32(base, byteOffset) OSReadSwapInt32(base, byteOffset)
#define OSReadLittleInt64(base, byteOffset) OSReadSwapInt64(base, byteOffset)
/* Functions for storing host endianess to little endian. */
#define OSWriteLittleInt16(base, byteOffset, data) OSWriteSwapInt16(base, byteOffset, data)
#define OSWriteLittleInt32(base, byteOffset, data) OSWriteSwapInt32(base, byteOffset, data)
#define OSWriteLittleInt64(base, byteOffset, data) OSWriteSwapInt64(base, byteOffset, data)
/* Host endianess to big endian byte swapping macros for constants. */
#define OSSwapHostToBigConstInt16(x) ((uint16_t)(x))
#define OSSwapHostToBigConstInt32(x) ((uint32_t)(x))
#define OSSwapHostToBigConstInt64(x) ((uint64_t)(x))
/* Generic host endianess to big endian byte swapping functions. */
#define OSSwapHostToBigInt16(x) ((uint16_t)(x))
#define OSSwapHostToBigInt32(x) ((uint32_t)(x))
#define OSSwapHostToBigInt64(x) ((uint64_t)(x))
/* Host endianess to little endian byte swapping macros for constants. */
#define OSSwapHostToLittleConstInt16(x) OSSwapConstInt16(x)
#define OSSwapHostToLittleConstInt32(x) OSSwapConstInt32(x)
#define OSSwapHostToLittleConstInt64(x) OSSwapConstInt64(x)
/* Generic host endianess to little endian byte swapping functions. */
#define OSSwapHostToLittleInt16(x) OSSwapInt16(x)
#define OSSwapHostToLittleInt32(x) OSSwapInt32(x)
#define OSSwapHostToLittleInt64(x) OSSwapInt64(x)
/* Big endian to host endianess byte swapping macros for constants. */
#define OSSwapBigToHostConstInt16(x) ((uint16_t)(x))
#define OSSwapBigToHostConstInt32(x) ((uint32_t)(x))
#define OSSwapBigToHostConstInt64(x) ((uint64_t)(x))
/* Generic big endian to host endianess byte swapping functions. */
#define OSSwapBigToHostInt16(x) ((uint16_t)(x))
#define OSSwapBigToHostInt32(x) ((uint32_t)(x))
#define OSSwapBigToHostInt64(x) ((uint64_t)(x))
/* Little endian to host endianess byte swapping macros for constants. */
#define OSSwapLittleToHostConstInt16(x) OSSwapConstInt16(x)
#define OSSwapLittleToHostConstInt32(x) OSSwapConstInt32(x)
#define OSSwapLittleToHostConstInt64(x) OSSwapConstInt64(x)
/* Generic little endian to host endianess byte swapping functions. */
#define OSSwapLittleToHostInt16(x) OSSwapInt16(x)
#define OSSwapLittleToHostInt32(x) OSSwapInt32(x)
#define OSSwapLittleToHostInt64(x) OSSwapInt64(x)
#elif defined(__LITTLE_ENDIAN__)
/* Functions for loading big endian to host endianess. */
#define OSReadBigInt16(base, byteOffset) OSReadSwapInt16(base, byteOffset)
#define OSReadBigInt32(base, byteOffset) OSReadSwapInt32(base, byteOffset)
#define OSReadBigInt64(base, byteOffset) OSReadSwapInt64(base, byteOffset)
/* Functions for storing host endianess to big endian. */
#define OSWriteBigInt16(base, byteOffset, data) OSWriteSwapInt16(base, byteOffset, data)
#define OSWriteBigInt32(base, byteOffset, data) OSWriteSwapInt32(base, byteOffset, data)
#define OSWriteBigInt64(base, byteOffset, data) OSWriteSwapInt64(base, byteOffset, data)
/* Functions for loading little endian to host endianess. */
#define OSReadLittleInt16(base, byteOffset) _OSReadInt16(base, byteOffset)
#define OSReadLittleInt32(base, byteOffset) _OSReadInt32(base, byteOffset)
#define OSReadLittleInt64(base, byteOffset) _OSReadInt64(base, byteOffset)
/* Functions for storing host endianess to little endian. */
#define OSWriteLittleInt16(base, byteOffset, data) _OSWriteInt16(base, byteOffset, data)
#define OSWriteLittleInt32(base, byteOffset, data) _OSWriteInt32(base, byteOffset, data)
#define OSWriteLittleInt64(base, byteOffset, data) _OSWriteInt64(base, byteOffset, data)
/* Host endianess to big endian byte swapping macros for constants. */
#define OSSwapHostToBigConstInt16(x) OSSwapConstInt16(x)
#define OSSwapHostToBigConstInt32(x) OSSwapConstInt32(x)
#define OSSwapHostToBigConstInt64(x) OSSwapConstInt64(x)
/* Generic host endianess to big endian byte swapping functions. */
#define OSSwapHostToBigInt16(x) OSSwapInt16(x)
#define OSSwapHostToBigInt32(x) OSSwapInt32(x)
#define OSSwapHostToBigInt64(x) OSSwapInt64(x)
/* Host endianess to little endian byte swapping macros for constants. */
#define OSSwapHostToLittleConstInt16(x) ((uint16_t)(x))
#define OSSwapHostToLittleConstInt32(x) ((uint32_t)(x))
#define OSSwapHostToLittleConstInt64(x) ((uint64_t)(x))
/* Generic host endianess to little endian byte swapping functions. */
#define OSSwapHostToLittleInt16(x) ((uint16_t)(x))
#define OSSwapHostToLittleInt32(x) ((uint32_t)(x))
#define OSSwapHostToLittleInt64(x) ((uint64_t)(x))
/* Big endian to host endianess byte swapping macros for constants. */
#define OSSwapBigToHostConstInt16(x) OSSwapConstInt16(x)
#define OSSwapBigToHostConstInt32(x) OSSwapConstInt32(x)
#define OSSwapBigToHostConstInt64(x) OSSwapConstInt64(x)
/* Generic big endian to host endianess byte swapping functions. */
#define OSSwapBigToHostInt16(x) OSSwapInt16(x)
#define OSSwapBigToHostInt32(x) OSSwapInt32(x)
#define OSSwapBigToHostInt64(x) OSSwapInt64(x)
/* Little endian to host endianess byte swapping macros for constants. */
#define OSSwapLittleToHostConstInt16(x) ((uint16_t)(x))
#define OSSwapLittleToHostConstInt32(x) ((uint32_t)(x))
#define OSSwapLittleToHostConstInt64(x) ((uint64_t)(x))
/* Generic little endian to host endianess byte swapping functions. */
#define OSSwapLittleToHostInt16(x) ((uint16_t)(x))
#define OSSwapLittleToHostInt32(x) ((uint32_t)(x))
#define OSSwapLittleToHostInt64(x) ((uint64_t)(x))
#else
#error Unknown endianess.
#endif
#endif /* ! _OS_OSBYTEORDER_H */
lib/libc/include/x86_64-macos-gnu/libkern/i386/OSByteOrder.h
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/*
* Copyright (c) 1999-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _OS_OSBYTEORDERI386_H
#define _OS_OSBYTEORDERI386_H
#include <stdint.h>
#include <libkern/i386/_OSByteOrder.h>
#include <sys/_types/_os_inline.h>
/* Functions for byte reversed loads. */
OS_INLINE
uint16_t
OSReadSwapInt16(
const volatile void * base,
uintptr_t byteOffset
)
{
uint16_t result;
result = *(volatile uint16_t *)((uintptr_t)base + byteOffset);
return _OSSwapInt16(result);
}
OS_INLINE
uint32_t
OSReadSwapInt32(
const volatile void * base,
uintptr_t byteOffset
)
{
uint32_t result;
result = *(volatile uint32_t *)((uintptr_t)base + byteOffset);
return _OSSwapInt32(result);
}
OS_INLINE
uint64_t
OSReadSwapInt64(
const volatile void * base,
uintptr_t byteOffset
)
{
uint64_t result;
result = *(volatile uint64_t *)((uintptr_t)base + byteOffset);
return _OSSwapInt64(result);
}
/* Functions for byte reversed stores. */
OS_INLINE
void
OSWriteSwapInt16(
volatile void * base,
uintptr_t byteOffset,
uint16_t data
)
{
*(volatile uint16_t *)((uintptr_t)base + byteOffset) = _OSSwapInt16(data);
}
OS_INLINE
void
OSWriteSwapInt32(
volatile void * base,
uintptr_t byteOffset,
uint32_t data
)
{
*(volatile uint32_t *)((uintptr_t)base + byteOffset) = _OSSwapInt32(data);
}
OS_INLINE
void
OSWriteSwapInt64(
volatile void * base,
uintptr_t byteOffset,
uint64_t data
)
{
*(volatile uint64_t *)((uintptr_t)base + byteOffset) = _OSSwapInt64(data);
}
#endif /* ! _OS_OSBYTEORDERI386_H */
lib/libc/include/x86_64-macos-gnu/mach-o/dyld.h
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/*
* Copyright (c) 1999-2008 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef _MACH_O_DYLD_H_
#define _MACH_O_DYLD_H_
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <mach-o/loader.h>
#include <Availability.h>
#if __cplusplus
extern "C" {
#endif
#ifdef __DRIVERKIT_19_0
#define DYLD_DRIVERKIT_UNAVAILABLE __API_UNAVAILABLE(driverkit)
#else
#define DYLD_DRIVERKIT_UNAVAILABLE
#endif
/*
* The following functions allow you to iterate through all loaded images.
* This is not a thread safe operation. Another thread can add or remove
* an image during the iteration.
*
* Many uses of these routines can be replace by a call to dladdr() which
* will return the mach_header and name of an image, given an address in
* the image. dladdr() is thread safe.
*/
extern uint32_t _dyld_image_count(void) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
extern const struct mach_header* _dyld_get_image_header(uint32_t image_index) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
extern intptr_t _dyld_get_image_vmaddr_slide(uint32_t image_index) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
extern const char* _dyld_get_image_name(uint32_t image_index) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
/*
* The following functions allow you to install callbacks which will be called
* by dyld whenever an image is loaded or unloaded. During a call to _dyld_register_func_for_add_image()
* the callback func is called for every existing image. Later, it is called as each new image
* is loaded and bound (but initializers not yet run). The callback registered with
* _dyld_register_func_for_remove_image() is called after any terminators in an image are run
* and before the image is un-memory-mapped.
*/
extern void _dyld_register_func_for_add_image(void (*func)(const struct mach_header* mh, intptr_t vmaddr_slide)) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
extern void _dyld_register_func_for_remove_image(void (*func)(const struct mach_header* mh, intptr_t vmaddr_slide)) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
/*
* NSVersionOfRunTimeLibrary() returns the current_version number of the currently dylib
* specifed by the libraryName. The libraryName parameter would be "bar" for /path/libbar.3.dylib and
* "Foo" for /path/Foo.framework/Versions/A/Foo. It returns -1 if no such library is loaded.
*/
extern int32_t NSVersionOfRunTimeLibrary(const char* libraryName) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
/*
* NSVersionOfLinkTimeLibrary() returns the current_version number that the main executable was linked
* against at build time. The libraryName parameter would be "bar" for /path/libbar.3.dylib and
* "Foo" for /path/Foo.framework/Versions/A/Foo. It returns -1 if the main executable did not link
* against the specified library.
*/
extern int32_t NSVersionOfLinkTimeLibrary(const char* libraryName) __OSX_AVAILABLE_STARTING(__MAC_10_1, __IPHONE_2_0);
/*
* _NSGetExecutablePath() copies the path of the main executable into the buffer. The bufsize parameter
* should initially be the size of the buffer. The function returns 0 if the path was successfully copied,
* and *bufsize is left unchanged. It returns -1 if the buffer is not large enough, and *bufsize is set
* to the size required.
*
* Note that _NSGetExecutablePath will return "a path" to the executable not a "real path" to the executable.
* That is the path may be a symbolic link and not the real file. With deep directories the total bufsize
* needed could be more than MAXPATHLEN.
*/
extern int _NSGetExecutablePath(char* buf, uint32_t* bufsize) __OSX_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);
/*
* Registers a function to be called when the current thread terminates.
* Called by c++ compiler to implement destructors on thread_local object variables.
*/
extern void _tlv_atexit(void (*termFunc)(void* objAddr), void* objAddr) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0);
/*
* Never called. On-disk thread local variables contain a pointer to this. Once
* the thread local is prepared, the pointer changes to a real handler such as tlv_get_addr.
*/
extern void _tlv_bootstrap(void) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) DYLD_DRIVERKIT_UNAVAILABLE ;
/*
* The following dyld API's are deprecated as of Mac OS X 10.5. They are either
* no longer necessary or are superceeded by dlopen and friends in <dlfcn.h>.
* dlopen/dlsym/dlclose have been available since Mac OS X 10.3 and work with
* dylibs and bundles.
*
* NSAddImage -> dlopen
* NSLookupSymbolInImage -> dlsym
* NSCreateObjectFileImageFromFile -> dlopen
* NSDestroyObjectFileImage -> dlclose
* NSLinkModule -> not needed when dlopen used
* NSUnLinkModule -> not needed when dlclose used
* NSLookupSymbolInModule -> dlsym
* _dyld_image_containing_address -> dladdr
* NSLinkEditError -> dlerror
*
*/
#ifndef ENUM_DYLD_BOOL
#define ENUM_DYLD_BOOL
#undef FALSE
#undef TRUE
enum DYLD_BOOL { FALSE, TRUE };
#endif /* ENUM_DYLD_BOOL */
/* Object file image API */
typedef enum {
NSObjectFileImageFailure, /* for this a message is printed on stderr */
NSObjectFileImageSuccess,
NSObjectFileImageInappropriateFile,
NSObjectFileImageArch,
NSObjectFileImageFormat, /* for this a message is printed on stderr */
NSObjectFileImageAccess
} NSObjectFileImageReturnCode;
typedef struct __NSObjectFileImage* NSObjectFileImage;
/* NSObjectFileImage can only be used with MH_BUNDLE files */
extern NSObjectFileImageReturnCode NSCreateObjectFileImageFromFile(const char* pathName, NSObjectFileImage *objectFileImage) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlopen()");
extern NSObjectFileImageReturnCode NSCreateObjectFileImageFromMemory(const void *address, size_t size, NSObjectFileImage *objectFileImage) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern bool NSDestroyObjectFileImage(NSObjectFileImage objectFileImage) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlclose()");
extern uint32_t NSSymbolDefinitionCountInObjectFileImage(NSObjectFileImage objectFileImage) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern const char* NSSymbolDefinitionNameInObjectFileImage(NSObjectFileImage objectFileImage, uint32_t ordinal) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern uint32_t NSSymbolReferenceCountInObjectFileImage(NSObjectFileImage objectFileImage) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern const char* NSSymbolReferenceNameInObjectFileImage(NSObjectFileImage objectFileImage, uint32_t ordinal, bool *tentative_definition) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern bool NSIsSymbolDefinedInObjectFileImage(NSObjectFileImage objectFileImage, const char* symbolName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern void* NSGetSectionDataInObjectFileImage(NSObjectFileImage objectFileImage, const char* segmentName, const char* sectionName, size_t *size) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "getsectiondata()");
typedef struct __NSModule* NSModule;
extern const char* NSNameOfModule(NSModule m) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern const char* NSLibraryNameForModule(NSModule m) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern NSModule NSLinkModule(NSObjectFileImage objectFileImage, const char* moduleName, uint32_t options) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlopen()");
#define NSLINKMODULE_OPTION_NONE 0x0
#define NSLINKMODULE_OPTION_BINDNOW 0x1
#define NSLINKMODULE_OPTION_PRIVATE 0x2
#define NSLINKMODULE_OPTION_RETURN_ON_ERROR 0x4
#define NSLINKMODULE_OPTION_DONT_CALL_MOD_INIT_ROUTINES 0x8
#define NSLINKMODULE_OPTION_TRAILING_PHYS_NAME 0x10
extern bool NSUnLinkModule(NSModule module, uint32_t options) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
#define NSUNLINKMODULE_OPTION_NONE 0x0
#define NSUNLINKMODULE_OPTION_KEEP_MEMORY_MAPPED 0x1
#define NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES 0x2
/* symbol API */
typedef struct __NSSymbol* NSSymbol;
extern bool NSIsSymbolNameDefined(const char* symbolName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern bool NSIsSymbolNameDefinedWithHint(const char* symbolName, const char* libraryNameHint) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern bool NSIsSymbolNameDefinedInImage(const struct mach_header* image, const char* symbolName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern NSSymbol NSLookupAndBindSymbol(const char* symbolName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern NSSymbol NSLookupAndBindSymbolWithHint(const char* symbolName, const char* libraryNameHint) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern NSSymbol NSLookupSymbolInModule(NSModule module, const char* symbolName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlsym()");
extern NSSymbol NSLookupSymbolInImage(const struct mach_header* image, const char* symbolName, uint32_t options) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlsym()");
#define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND 0x0
#define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW 0x1
#define NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_FULLY 0x2
#define NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR 0x4
extern const char* NSNameOfSymbol(NSSymbol symbol) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern void * NSAddressOfSymbol(NSSymbol symbol) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlsym()");
extern NSModule NSModuleForSymbol(NSSymbol symbol) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dladdr()");
/* error handling API */
typedef enum {
NSLinkEditFileAccessError,
NSLinkEditFileFormatError,
NSLinkEditMachResourceError,
NSLinkEditUnixResourceError,
NSLinkEditOtherError,
NSLinkEditWarningError,
NSLinkEditMultiplyDefinedError,
NSLinkEditUndefinedError
} NSLinkEditErrors;
/*
* For the NSLinkEditErrors value NSLinkEditOtherError these are the values
* passed to the link edit error handler as the errorNumber (what would be an
* errno value for NSLinkEditUnixResourceError or a kern_return_t value for
* NSLinkEditMachResourceError).
*/
typedef enum {
NSOtherErrorRelocation,
NSOtherErrorLazyBind,
NSOtherErrorIndrLoop,
NSOtherErrorLazyInit,
NSOtherErrorInvalidArgs
} NSOtherErrorNumbers;
extern void NSLinkEditError(NSLinkEditErrors *c, int *errorNumber, const char** fileName, const char** errorString) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlerror()");
typedef struct {
void (*undefined)(const char* symbolName);
NSModule (*multiple)(NSSymbol s, NSModule oldModule, NSModule newModule);
void (*linkEdit)(NSLinkEditErrors errorClass, int errorNumber,
const char* fileName, const char* errorString);
} NSLinkEditErrorHandlers;
extern void NSInstallLinkEditErrorHandlers(const NSLinkEditErrorHandlers *handlers) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "");
extern bool NSAddLibrary(const char* pathName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlopen()");
extern bool NSAddLibraryWithSearching(const char* pathName) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlopen()");
extern const struct mach_header* NSAddImage(const char* image_name, uint32_t options) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlopen()");
#define NSADDIMAGE_OPTION_NONE 0x0
#define NSADDIMAGE_OPTION_RETURN_ON_ERROR 0x1
#define NSADDIMAGE_OPTION_WITH_SEARCHING 0x2
#define NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED 0x4
#define NSADDIMAGE_OPTION_MATCH_FILENAME_BY_INSTALLNAME 0x8
extern bool _dyld_present(void) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "always true");
extern bool _dyld_launched_prebound(void) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "moot");
extern bool _dyld_all_twolevel_modules_prebound(void) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.3, 10.5, "moot");
extern bool _dyld_bind_fully_image_containing_address(const void* address) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlopen(RTLD_NOW)");
extern bool _dyld_image_containing_address(const void* address) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.3, 10.5, "dladdr()");
extern void _dyld_lookup_and_bind(const char* symbol_name, void **address, NSModule* module) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern void _dyld_lookup_and_bind_with_hint(const char* symbol_name, const char* library_name_hint, void** address, NSModule* module) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.4, "dlsym()");
extern void _dyld_lookup_and_bind_fully(const char* symbol_name, void** address, NSModule* module) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.1, 10.5, "dlsym()");
extern const struct mach_header* _dyld_get_image_header_containing_address(const void* address) __API_UNAVAILABLE(ios, tvos, watchos) DYLD_DRIVERKIT_UNAVAILABLE __OSX_DEPRECATED(10.3, 10.5, "dladdr()");
#if __cplusplus
}
#endif
#endif /* _MACH_O_DYLD_H_ */
lib/libc/include/x86_64-macos-gnu/mach-o/loader.h
+1577
View File
@@ -0,0 +1,1577 @@
/*
* Copyright (c) 1999-2010 Apple Inc. All Rights Reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef _MACHO_LOADER_H_
#define _MACHO_LOADER_H_
/*
* This file describes the format of mach object files.
*/
#include <stdint.h>
/*
* <mach/machine.h> is needed here for the cpu_type_t and cpu_subtype_t types
* and contains the constants for the possible values of these types.
*/
#include <mach/machine.h>
/*
* <mach/vm_prot.h> is needed here for the vm_prot_t type and contains the
* constants that are or'ed together for the possible values of this type.
*/
#include <mach/vm_prot.h>
/*
* <machine/thread_status.h> is expected to define the flavors of the thread
* states and the structures of those flavors for each machine.
*/
#include <mach/machine/thread_status.h>
#include <architecture/byte_order.h>
/*
* The 32-bit mach header appears at the very beginning of the object file for
* 32-bit architectures.
*/
struct mach_header {
uint32_t magic; /* mach magic number identifier */
cpu_type_t cputype; /* cpu specifier */
cpu_subtype_t cpusubtype; /* machine specifier */
uint32_t filetype; /* type of file */
uint32_t ncmds; /* number of load commands */
uint32_t sizeofcmds; /* the size of all the load commands */
uint32_t flags; /* flags */
};
/* Constant for the magic field of the mach_header (32-bit architectures) */
#define MH_MAGIC 0xfeedface /* the mach magic number */
#define MH_CIGAM 0xcefaedfe /* NXSwapInt(MH_MAGIC) */
/*
* The 64-bit mach header appears at the very beginning of object files for
* 64-bit architectures.
*/
struct mach_header_64 {
uint32_t magic; /* mach magic number identifier */
cpu_type_t cputype; /* cpu specifier */
cpu_subtype_t cpusubtype; /* machine specifier */
uint32_t filetype; /* type of file */
uint32_t ncmds; /* number of load commands */
uint32_t sizeofcmds; /* the size of all the load commands */
uint32_t flags; /* flags */
uint32_t reserved; /* reserved */
};
/* Constant for the magic field of the mach_header_64 (64-bit architectures) */
#define MH_MAGIC_64 0xfeedfacf /* the 64-bit mach magic number */
#define MH_CIGAM_64 0xcffaedfe /* NXSwapInt(MH_MAGIC_64) */
/*
* The layout of the file depends on the filetype. For all but the MH_OBJECT
* file type the segments are padded out and aligned on a segment alignment
* boundary for efficient demand pageing. The MH_EXECUTE, MH_FVMLIB, MH_DYLIB,
* MH_DYLINKER and MH_BUNDLE file types also have the headers included as part
* of their first segment.
*
* The file type MH_OBJECT is a compact format intended as output of the
* assembler and input (and possibly output) of the link editor (the .o
* format). All sections are in one unnamed segment with no segment padding.
* This format is used as an executable format when the file is so small the
* segment padding greatly increases its size.
*
* The file type MH_PRELOAD is an executable format intended for things that
* are not executed under the kernel (proms, stand alones, kernels, etc). The
* format can be executed under the kernel but may demand paged it and not
* preload it before execution.
*
* A core file is in MH_CORE format and can be any in an arbritray legal
* Mach-O file.
*
* Constants for the filetype field of the mach_header
*/
#define MH_OBJECT 0x1 /* relocatable object file */
#define MH_EXECUTE 0x2 /* demand paged executable file */
#define MH_FVMLIB 0x3 /* fixed VM shared library file */
#define MH_CORE 0x4 /* core file */
#define MH_PRELOAD 0x5 /* preloaded executable file */
#define MH_DYLIB 0x6 /* dynamically bound shared library */
#define MH_DYLINKER 0x7 /* dynamic link editor */
#define MH_BUNDLE 0x8 /* dynamically bound bundle file */
#define MH_DYLIB_STUB 0x9 /* shared library stub for static */
/* linking only, no section contents */
#define MH_DSYM 0xa /* companion file with only debug */
/* sections */
#define MH_KEXT_BUNDLE 0xb /* x86_64 kexts */
/* Constants for the flags field of the mach_header */
#define MH_NOUNDEFS 0x1 /* the object file has no undefined
references */
#define MH_INCRLINK 0x2 /* the object file is the output of an
incremental link against a base file
and can't be link edited again */
#define MH_DYLDLINK 0x4 /* the object file is input for the
dynamic linker and can't be staticly
link edited again */
#define MH_BINDATLOAD 0x8 /* the object file's undefined
references are bound by the dynamic
linker when loaded. */
#define MH_PREBOUND 0x10 /* the file has its dynamic undefined
references prebound. */
#define MH_SPLIT_SEGS 0x20 /* the file has its read-only and
read-write segments split */
#define MH_LAZY_INIT 0x40 /* the shared library init routine is
to be run lazily via catching memory
faults to its writeable segments
(obsolete) */
#define MH_TWOLEVEL 0x80 /* the image is using two-level name
space bindings */
#define MH_FORCE_FLAT 0x100 /* the executable is forcing all images
to use flat name space bindings */
#define MH_NOMULTIDEFS 0x200 /* this umbrella guarantees no multiple
defintions of symbols in its
sub-images so the two-level namespace
hints can always be used. */
#define MH_NOFIXPREBINDING 0x400 /* do not have dyld notify the
prebinding agent about this
executable */
#define MH_PREBINDABLE 0x800 /* the binary is not prebound but can
have its prebinding redone. only used
when MH_PREBOUND is not set. */
#define MH_ALLMODSBOUND 0x1000 /* indicates that this binary binds to
all two-level namespace modules of
its dependent libraries. only used
when MH_PREBINDABLE and MH_TWOLEVEL
are both set. */
#define MH_SUBSECTIONS_VIA_SYMBOLS 0x2000/* safe to divide up the sections into
sub-sections via symbols for dead
code stripping */
#define MH_CANONICAL 0x4000 /* the binary has been canonicalized
via the unprebind operation */
#define MH_WEAK_DEFINES 0x8000 /* the final linked image contains
external weak symbols */
#define MH_BINDS_TO_WEAK 0x10000 /* the final linked image uses
weak symbols */
#define MH_ALLOW_STACK_EXECUTION 0x20000/* When this bit is set, all stacks
in the task will be given stack
execution privilege. Only used in
MH_EXECUTE filetypes. */
#define MH_ROOT_SAFE 0x40000 /* When this bit is set, the binary
declares it is safe for use in
processes with uid zero */
#define MH_SETUID_SAFE 0x80000 /* When this bit is set, the binary
declares it is safe for use in
processes when issetugid() is true */
#define MH_NO_REEXPORTED_DYLIBS 0x100000 /* When this bit is set on a dylib,
the static linker does not need to
examine dependent dylibs to see
if any are re-exported */
#define MH_PIE 0x200000 /* When this bit is set, the OS will
load the main executable at a
random address. Only used in
MH_EXECUTE filetypes. */
#define MH_DEAD_STRIPPABLE_DYLIB 0x400000 /* Only for use on dylibs. When
linking against a dylib that
has this bit set, the static linker
will automatically not create a
LC_LOAD_DYLIB load command to the
dylib if no symbols are being
referenced from the dylib. */
#define MH_HAS_TLV_DESCRIPTORS 0x800000 /* Contains a section of type
S_THREAD_LOCAL_VARIABLES */
#define MH_NO_HEAP_EXECUTION 0x1000000 /* When this bit is set, the OS will
run the main executable with
a non-executable heap even on
platforms (e.g. i386) that don't
require it. Only used in MH_EXECUTE
filetypes. */
#define MH_APP_EXTENSION_SAFE 0x02000000 /* The code was linked for use in an
application extension. */
#define MH_NLIST_OUTOFSYNC_WITH_DYLDINFO 0x04000000 /* The external symbols
listed in the nlist symbol table do
not include all the symbols listed in
the dyld info. */
#define MH_SIM_SUPPORT 0x08000000 /* Allow LC_MIN_VERSION_MACOS and
LC_BUILD_VERSION load commands with
the platforms macOS, macCatalyst,
iOSSimulator, tvOSSimulator and
watchOSSimulator. */
#define MH_DYLIB_IN_CACHE 0x80000000 /* Only for use on dylibs. When this bit
is set, the dylib is part of the dyld
shared cache, rather than loose in
the filesystem. */
/*
* The load commands directly follow the mach_header. The total size of all
* of the commands is given by the sizeofcmds field in the mach_header. All
* load commands must have as their first two fields cmd and cmdsize. The cmd
* field is filled in with a constant for that command type. Each command type
* has a structure specifically for it. The cmdsize field is the size in bytes
* of the particular load command structure plus anything that follows it that
* is a part of the load command (i.e. section structures, strings, etc.). To
* advance to the next load command the cmdsize can be added to the offset or
* pointer of the current load command. The cmdsize for 32-bit architectures
* MUST be a multiple of 4 bytes and for 64-bit architectures MUST be a multiple
* of 8 bytes (these are forever the maximum alignment of any load commands).
* The padded bytes must be zero. All tables in the object file must also
* follow these rules so the file can be memory mapped. Otherwise the pointers
* to these tables will not work well or at all on some machines. With all
* padding zeroed like objects will compare byte for byte.
*/
struct load_command {
uint32_t cmd; /* type of load command */
uint32_t cmdsize; /* total size of command in bytes */
};
/*
* After MacOS X 10.1 when a new load command is added that is required to be
* understood by the dynamic linker for the image to execute properly the
* LC_REQ_DYLD bit will be or'ed into the load command constant. If the dynamic
* linker sees such a load command it it does not understand will issue a
* "unknown load command required for execution" error and refuse to use the
* image. Other load commands without this bit that are not understood will
* simply be ignored.
*/
#define LC_REQ_DYLD 0x80000000
/* Constants for the cmd field of all load commands, the type */
#define LC_SEGMENT 0x1 /* segment of this file to be mapped */
#define LC_SYMTAB 0x2 /* link-edit stab symbol table info */
#define LC_SYMSEG 0x3 /* link-edit gdb symbol table info (obsolete) */
#define LC_THREAD 0x4 /* thread */
#define LC_UNIXTHREAD 0x5 /* unix thread (includes a stack) */
#define LC_LOADFVMLIB 0x6 /* load a specified fixed VM shared library */
#define LC_IDFVMLIB 0x7 /* fixed VM shared library identification */
#define LC_IDENT 0x8 /* object identification info (obsolete) */
#define LC_FVMFILE 0x9 /* fixed VM file inclusion (internal use) */
#define LC_PREPAGE 0xa /* prepage command (internal use) */
#define LC_DYSYMTAB 0xb /* dynamic link-edit symbol table info */
#define LC_LOAD_DYLIB 0xc /* load a dynamically linked shared library */
#define LC_ID_DYLIB 0xd /* dynamically linked shared lib ident */
#define LC_LOAD_DYLINKER 0xe /* load a dynamic linker */
#define LC_ID_DYLINKER 0xf /* dynamic linker identification */
#define LC_PREBOUND_DYLIB 0x10 /* modules prebound for a dynamically */
/* linked shared library */
#define LC_ROUTINES 0x11 /* image routines */
#define LC_SUB_FRAMEWORK 0x12 /* sub framework */
#define LC_SUB_UMBRELLA 0x13 /* sub umbrella */
#define LC_SUB_CLIENT 0x14 /* sub client */
#define LC_SUB_LIBRARY 0x15 /* sub library */
#define LC_TWOLEVEL_HINTS 0x16 /* two-level namespace lookup hints */
#define LC_PREBIND_CKSUM 0x17 /* prebind checksum */
/*
* load a dynamically linked shared library that is allowed to be missing
* (all symbols are weak imported).
*/
#define LC_LOAD_WEAK_DYLIB (0x18 | LC_REQ_DYLD)
#define LC_SEGMENT_64 0x19 /* 64-bit segment of this file to be
mapped */
#define LC_ROUTINES_64 0x1a /* 64-bit image routines */
#define LC_UUID 0x1b /* the uuid */
#define LC_RPATH (0x1c | LC_REQ_DYLD) /* runpath additions */
#define LC_CODE_SIGNATURE 0x1d /* local of code signature */
#define LC_SEGMENT_SPLIT_INFO 0x1e /* local of info to split segments */
#define LC_REEXPORT_DYLIB (0x1f | LC_REQ_DYLD) /* load and re-export dylib */
#define LC_LAZY_LOAD_DYLIB 0x20 /* delay load of dylib until first use */
#define LC_ENCRYPTION_INFO 0x21 /* encrypted segment information */
#define LC_DYLD_INFO 0x22 /* compressed dyld information */
#define LC_DYLD_INFO_ONLY (0x22|LC_REQ_DYLD) /* compressed dyld information only */
#define LC_LOAD_UPWARD_DYLIB (0x23 | LC_REQ_DYLD) /* load upward dylib */
#define LC_VERSION_MIN_MACOSX 0x24 /* build for MacOSX min OS version */
#define LC_VERSION_MIN_IPHONEOS 0x25 /* build for iPhoneOS min OS version */
#define LC_FUNCTION_STARTS 0x26 /* compressed table of function start addresses */
#define LC_DYLD_ENVIRONMENT 0x27 /* string for dyld to treat
like environment variable */
#define LC_MAIN (0x28|LC_REQ_DYLD) /* replacement for LC_UNIXTHREAD */
#define LC_DATA_IN_CODE 0x29 /* table of non-instructions in __text */
#define LC_SOURCE_VERSION 0x2A /* source version used to build binary */
#define LC_DYLIB_CODE_SIGN_DRS 0x2B /* Code signing DRs copied from linked dylibs */
#define LC_ENCRYPTION_INFO_64 0x2C /* 64-bit encrypted segment information */
#define LC_LINKER_OPTION 0x2D /* linker options in MH_OBJECT files */
#define LC_LINKER_OPTIMIZATION_HINT 0x2E /* optimization hints in MH_OBJECT files */
#define LC_VERSION_MIN_TVOS 0x2F /* build for AppleTV min OS version */
#define LC_VERSION_MIN_WATCHOS 0x30 /* build for Watch min OS version */
#define LC_NOTE 0x31 /* arbitrary data included within a Mach-O file */
#define LC_BUILD_VERSION 0x32 /* build for platform min OS version */
#define LC_DYLD_EXPORTS_TRIE (0x33 | LC_REQ_DYLD) /* used with linkedit_data_command, payload is trie */
#define LC_DYLD_CHAINED_FIXUPS (0x34 | LC_REQ_DYLD) /* used with linkedit_data_command */
/*
* A variable length string in a load command is represented by an lc_str
* union. The strings are stored just after the load command structure and
* the offset is from the start of the load command structure. The size
* of the string is reflected in the cmdsize field of the load command.
* Once again any padded bytes to bring the cmdsize field to a multiple
* of 4 bytes must be zero.
*/
union lc_str {
uint32_t offset; /* offset to the string */
#ifndef __LP64__
char *ptr; /* pointer to the string */
#endif
};
/*
* The segment load command indicates that a part of this file is to be
* mapped into the task's address space. The size of this segment in memory,
* vmsize, maybe equal to or larger than the amount to map from this file,
* filesize. The file is mapped starting at fileoff to the beginning of
* the segment in memory, vmaddr. The rest of the memory of the segment,
* if any, is allocated zero fill on demand. The segment's maximum virtual
* memory protection and initial virtual memory protection are specified
* by the maxprot and initprot fields. If the segment has sections then the
* section structures directly follow the segment command and their size is
* reflected in cmdsize.
*/
struct segment_command { /* for 32-bit architectures */
uint32_t cmd; /* LC_SEGMENT */
uint32_t cmdsize; /* includes sizeof section structs */
char segname[16]; /* segment name */
uint32_t vmaddr; /* memory address of this segment */
uint32_t vmsize; /* memory size of this segment */
uint32_t fileoff; /* file offset of this segment */
uint32_t filesize; /* amount to map from the file */
vm_prot_t maxprot; /* maximum VM protection */
vm_prot_t initprot; /* initial VM protection */
uint32_t nsects; /* number of sections in segment */
uint32_t flags; /* flags */
};
/*
* The 64-bit segment load command indicates that a part of this file is to be
* mapped into a 64-bit task's address space. If the 64-bit segment has
* sections then section_64 structures directly follow the 64-bit segment
* command and their size is reflected in cmdsize.
*/
struct segment_command_64 { /* for 64-bit architectures */
uint32_t cmd; /* LC_SEGMENT_64 */
uint32_t cmdsize; /* includes sizeof section_64 structs */
char segname[16]; /* segment name */
uint64_t vmaddr; /* memory address of this segment */
uint64_t vmsize; /* memory size of this segment */
uint64_t fileoff; /* file offset of this segment */
uint64_t filesize; /* amount to map from the file */
vm_prot_t maxprot; /* maximum VM protection */
vm_prot_t initprot; /* initial VM protection */
uint32_t nsects; /* number of sections in segment */
uint32_t flags; /* flags */
};
/* Constants for the flags field of the segment_command */
#define SG_HIGHVM 0x1 /* the file contents for this segment is for
the high part of the VM space, the low part
is zero filled (for stacks in core files) */
#define SG_FVMLIB 0x2 /* this segment is the VM that is allocated by
a fixed VM library, for overlap checking in
the link editor */
#define SG_NORELOC 0x4 /* this segment has nothing that was relocated
in it and nothing relocated to it, that is
it maybe safely replaced without relocation*/
#define SG_PROTECTED_VERSION_1 0x8 /* This segment is protected. If the
segment starts at file offset 0, the
first page of the segment is not
protected. All other pages of the
segment are protected. */
#define SG_READ_ONLY 0x10 /* This segment is made read-only after fixups */
/*
* A segment is made up of zero or more sections. Non-MH_OBJECT files have
* all of their segments with the proper sections in each, and padded to the
* specified segment alignment when produced by the link editor. The first
* segment of a MH_EXECUTE and MH_FVMLIB format file contains the mach_header
* and load commands of the object file before its first section. The zero
* fill sections are always last in their segment (in all formats). This
* allows the zeroed segment padding to be mapped into memory where zero fill
* sections might be. The gigabyte zero fill sections, those with the section
* type S_GB_ZEROFILL, can only be in a segment with sections of this type.
* These segments are then placed after all other segments.
*
* The MH_OBJECT format has all of its sections in one segment for
* compactness. There is no padding to a specified segment boundary and the
* mach_header and load commands are not part of the segment.
*
* Sections with the same section name, sectname, going into the same segment,
* segname, are combined by the link editor. The resulting section is aligned
* to the maximum alignment of the combined sections and is the new section's
* alignment. The combined sections are aligned to their original alignment in
* the combined section. Any padded bytes to get the specified alignment are
* zeroed.
*
* The format of the relocation entries referenced by the reloff and nreloc
* fields of the section structure for mach object files is described in the
* header file <reloc.h>.
*/
struct section { /* for 32-bit architectures */
char sectname[16]; /* name of this section */
char segname[16]; /* segment this section goes in */
uint32_t addr; /* memory address of this section */
uint32_t size; /* size in bytes of this section */
uint32_t offset; /* file offset of this section */
uint32_t align; /* section alignment (power of 2) */
uint32_t reloff; /* file offset of relocation entries */
uint32_t nreloc; /* number of relocation entries */
uint32_t flags; /* flags (section type and attributes)*/
uint32_t reserved1; /* reserved (for offset or index) */
uint32_t reserved2; /* reserved (for count or sizeof) */
};
struct section_64 { /* for 64-bit architectures */
char sectname[16]; /* name of this section */
char segname[16]; /* segment this section goes in */
uint64_t addr; /* memory address of this section */
uint64_t size; /* size in bytes of this section */
uint32_t offset; /* file offset of this section */
uint32_t align; /* section alignment (power of 2) */
uint32_t reloff; /* file offset of relocation entries */
uint32_t nreloc; /* number of relocation entries */
uint32_t flags; /* flags (section type and attributes)*/
uint32_t reserved1; /* reserved (for offset or index) */
uint32_t reserved2; /* reserved (for count or sizeof) */
uint32_t reserved3; /* reserved */
};
/*
* The flags field of a section structure is separated into two parts a section
* type and section attributes. The section types are mutually exclusive (it
* can only have one type) but the section attributes are not (it may have more
* than one attribute).
*/
#define SECTION_TYPE 0x000000ff /* 256 section types */
#define SECTION_ATTRIBUTES 0xffffff00 /* 24 section attributes */
/* Constants for the type of a section */
#define S_REGULAR 0x0 /* regular section */
#define S_ZEROFILL 0x1 /* zero fill on demand section */
#define S_CSTRING_LITERALS 0x2 /* section with only literal C strings*/
#define S_4BYTE_LITERALS 0x3 /* section with only 4 byte literals */
#define S_8BYTE_LITERALS 0x4 /* section with only 8 byte literals */
#define S_LITERAL_POINTERS 0x5 /* section with only pointers to */
/* literals */
/*
* For the two types of symbol pointers sections and the symbol stubs section
* they have indirect symbol table entries. For each of the entries in the
* section the indirect symbol table entries, in corresponding order in the
* indirect symbol table, start at the index stored in the reserved1 field
* of the section structure. Since the indirect symbol table entries
* correspond to the entries in the section the number of indirect symbol table
* entries is inferred from the size of the section divided by the size of the
* entries in the section. For symbol pointers sections the size of the entries
* in the section is 4 bytes and for symbol stubs sections the byte size of the
* stubs is stored in the reserved2 field of the section structure.
*/
#define S_NON_LAZY_SYMBOL_POINTERS 0x6 /* section with only non-lazy
symbol pointers */
#define S_LAZY_SYMBOL_POINTERS 0x7 /* section with only lazy symbol
pointers */
#define S_SYMBOL_STUBS 0x8 /* section with only symbol
stubs, byte size of stub in
the reserved2 field */
#define S_MOD_INIT_FUNC_POINTERS 0x9 /* section with only function
pointers for initialization*/
#define S_MOD_TERM_FUNC_POINTERS 0xa /* section with only function
pointers for termination */
#define S_COALESCED 0xb /* section contains symbols that
are to be coalesced */
#define S_GB_ZEROFILL 0xc /* zero fill on demand section
(that can be larger than 4
gigabytes) */
#define S_INTERPOSING 0xd /* section with only pairs of
function pointers for
interposing */
#define S_16BYTE_LITERALS 0xe /* section with only 16 byte
literals */
#define S_DTRACE_DOF 0xf /* section contains
DTrace Object Format */
#define S_LAZY_DYLIB_SYMBOL_POINTERS 0x10 /* section with only lazy
symbol pointers to lazy
loaded dylibs */
/*
* Section types to support thread local variables
*/
#define S_THREAD_LOCAL_REGULAR 0x11 /* template of initial
values for TLVs */
#define S_THREAD_LOCAL_ZEROFILL 0x12 /* template of initial
values for TLVs */
#define S_THREAD_LOCAL_VARIABLES 0x13 /* TLV descriptors */
#define S_THREAD_LOCAL_VARIABLE_POINTERS 0x14 /* pointers to TLV
descriptors */
#define S_THREAD_LOCAL_INIT_FUNCTION_POINTERS 0x15 /* functions to call
to initialize TLV
values */
#define S_INIT_FUNC_OFFSETS 0x16 /* 32-bit offsets to
initializers */
/*
* Constants for the section attributes part of the flags field of a section
* structure.
*/
#define SECTION_ATTRIBUTES_USR 0xff000000 /* User setable attributes */
#define S_ATTR_PURE_INSTRUCTIONS 0x80000000 /* section contains only true
machine instructions */
#define S_ATTR_NO_TOC 0x40000000 /* section contains coalesced
symbols that are not to be
in a ranlib table of
contents */
#define S_ATTR_STRIP_STATIC_SYMS 0x20000000 /* ok to strip static symbols
in this section in files
with the MH_DYLDLINK flag */
#define S_ATTR_NO_DEAD_STRIP 0x10000000 /* no dead stripping */
#define S_ATTR_LIVE_SUPPORT 0x08000000 /* blocks are live if they
reference live blocks */
#define S_ATTR_SELF_MODIFYING_CODE 0x04000000 /* Used with i386 code stubs
written on by dyld */
/*
* If a segment contains any sections marked with S_ATTR_DEBUG then all
* sections in that segment must have this attribute. No section other than
* a section marked with this attribute may reference the contents of this
* section. A section with this attribute may contain no symbols and must have
* a section type S_REGULAR. The static linker will not copy section contents
* from sections with this attribute into its output file. These sections
* generally contain DWARF debugging info.
*/
#define S_ATTR_DEBUG 0x02000000 /* a debug section */
#define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* system setable attributes */
#define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* section contains some
machine instructions */
#define S_ATTR_EXT_RELOC 0x00000200 /* section has external
relocation entries */
#define S_ATTR_LOC_RELOC 0x00000100 /* section has local
relocation entries */
/*
* The names of segments and sections in them are mostly meaningless to the
* link-editor. But there are few things to support traditional UNIX
* executables that require the link-editor and assembler to use some names
* agreed upon by convention.
*
* The initial protection of the "__TEXT" segment has write protection turned
* off (not writeable).
*
* The link-editor will allocate common symbols at the end of the "__common"
* section in the "__DATA" segment. It will create the section and segment
* if needed.
*/
/* The currently known segment names and the section names in those segments */
#define SEG_PAGEZERO "__PAGEZERO" /* the pagezero segment which has no */
/* protections and catches NULL */
/* references for MH_EXECUTE files */
#define SEG_TEXT "__TEXT" /* the tradition UNIX text segment */
#define SECT_TEXT "__text" /* the real text part of the text */
/* section no headers, and no padding */
#define SECT_FVMLIB_INIT0 "__fvmlib_init0" /* the fvmlib initialization */
/* section */
#define SECT_FVMLIB_INIT1 "__fvmlib_init1" /* the section following the */
/* fvmlib initialization */
/* section */
#define SEG_DATA "__DATA" /* the tradition UNIX data segment */
#define SECT_DATA "__data" /* the real initialized data section */
/* no padding, no bss overlap */
#define SECT_BSS "__bss" /* the real uninitialized data section*/
/* no padding */
#define SECT_COMMON "__common" /* the section common symbols are */
/* allocated in by the link editor */
#define SEG_OBJC "__OBJC" /* objective-C runtime segment */
#define SECT_OBJC_SYMBOLS "__symbol_table" /* symbol table */
#define SECT_OBJC_MODULES "__module_info" /* module information */
#define SECT_OBJC_STRINGS "__selector_strs" /* string table */
#define SECT_OBJC_REFS "__selector_refs" /* string table */
#define SEG_ICON "__ICON" /* the icon segment */
#define SECT_ICON_HEADER "__header" /* the icon headers */
#define SECT_ICON_TIFF "__tiff" /* the icons in tiff format */
#define SEG_LINKEDIT "__LINKEDIT" /* the segment containing all structs */
/* created and maintained by the link */
/* editor. Created with -seglinkedit */
/* option to ld(1) for MH_EXECUTE and */
/* FVMLIB file types only */
#define SEG_UNIXSTACK "__UNIXSTACK" /* the unix stack segment */
#define SEG_IMPORT "__IMPORT" /* the segment for the self (dyld) */
/* modifing code stubs that has read, */
/* write and execute permissions */
/*
* Fixed virtual memory shared libraries are identified by two things. The
* target pathname (the name of the library as found for execution), and the
* minor version number. The address of where the headers are loaded is in
* header_addr. (THIS IS OBSOLETE and no longer supported).
*/
struct fvmlib {
union lc_str name; /* library's target pathname */
uint32_t minor_version; /* library's minor version number */
uint32_t header_addr; /* library's header address */
};
/*
* A fixed virtual shared library (filetype == MH_FVMLIB in the mach header)
* contains a fvmlib_command (cmd == LC_IDFVMLIB) to identify the library.
* An object that uses a fixed virtual shared library also contains a
* fvmlib_command (cmd == LC_LOADFVMLIB) for each library it uses.
* (THIS IS OBSOLETE and no longer supported).
*/
struct fvmlib_command {
uint32_t cmd; /* LC_IDFVMLIB or LC_LOADFVMLIB */
uint32_t cmdsize; /* includes pathname string */
struct fvmlib fvmlib; /* the library identification */
};
/*
* Dynamicly linked shared libraries are identified by two things. The
* pathname (the name of the library as found for execution), and the
* compatibility version number. The pathname must match and the compatibility
* number in the user of the library must be greater than or equal to the
* library being used. The time stamp is used to record the time a library was
* built and copied into user so it can be use to determined if the library used
* at runtime is exactly the same as used to built the program.
*/
struct dylib {
union lc_str name; /* library's path name */
uint32_t timestamp; /* library's build time stamp */
uint32_t current_version; /* library's current version number */
uint32_t compatibility_version; /* library's compatibility vers number*/
};
/*
* A dynamically linked shared library (filetype == MH_DYLIB in the mach header)
* contains a dylib_command (cmd == LC_ID_DYLIB) to identify the library.
* An object that uses a dynamically linked shared library also contains a
* dylib_command (cmd == LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, or
* LC_REEXPORT_DYLIB) for each library it uses.
*/
struct dylib_command {
uint32_t cmd; /* LC_ID_DYLIB, LC_LOAD_{,WEAK_}DYLIB,
LC_REEXPORT_DYLIB */
uint32_t cmdsize; /* includes pathname string */
struct dylib dylib; /* the library identification */
};
/*
* A dynamically linked shared library may be a subframework of an umbrella
* framework. If so it will be linked with "-umbrella umbrella_name" where
* Where "umbrella_name" is the name of the umbrella framework. A subframework
* can only be linked against by its umbrella framework or other subframeworks
* that are part of the same umbrella framework. Otherwise the static link
* editor produces an error and states to link against the umbrella framework.
* The name of the umbrella framework for subframeworks is recorded in the
* following structure.
*/
struct sub_framework_command {
uint32_t cmd; /* LC_SUB_FRAMEWORK */
uint32_t cmdsize; /* includes umbrella string */
union lc_str umbrella; /* the umbrella framework name */
};
/*
* For dynamically linked shared libraries that are subframework of an umbrella
* framework they can allow clients other than the umbrella framework or other
* subframeworks in the same umbrella framework. To do this the subframework
* is built with "-allowable_client client_name" and an LC_SUB_CLIENT load
* command is created for each -allowable_client flag. The client_name is
* usually a framework name. It can also be a name used for bundles clients
* where the bundle is built with "-client_name client_name".
*/
struct sub_client_command {
uint32_t cmd; /* LC_SUB_CLIENT */
uint32_t cmdsize; /* includes client string */
union lc_str client; /* the client name */
};
/*
* A dynamically linked shared library may be a sub_umbrella of an umbrella
* framework. If so it will be linked with "-sub_umbrella umbrella_name" where
* Where "umbrella_name" is the name of the sub_umbrella framework. When
* staticly linking when -twolevel_namespace is in effect a twolevel namespace
* umbrella framework will only cause its subframeworks and those frameworks
* listed as sub_umbrella frameworks to be implicited linked in. Any other
* dependent dynamic libraries will not be linked it when -twolevel_namespace
* is in effect. The primary library recorded by the static linker when
* resolving a symbol in these libraries will be the umbrella framework.
* Zero or more sub_umbrella frameworks may be use by an umbrella framework.
* The name of a sub_umbrella framework is recorded in the following structure.
*/
struct sub_umbrella_command {
uint32_t cmd; /* LC_SUB_UMBRELLA */
uint32_t cmdsize; /* includes sub_umbrella string */
union lc_str sub_umbrella; /* the sub_umbrella framework name */
};
/*
* A dynamically linked shared library may be a sub_library of another shared
* library. If so it will be linked with "-sub_library library_name" where
* Where "library_name" is the name of the sub_library shared library. When
* staticly linking when -twolevel_namespace is in effect a twolevel namespace
* shared library will only cause its subframeworks and those frameworks
* listed as sub_umbrella frameworks and libraries listed as sub_libraries to
* be implicited linked in. Any other dependent dynamic libraries will not be
* linked it when -twolevel_namespace is in effect. The primary library
* recorded by the static linker when resolving a symbol in these libraries
* will be the umbrella framework (or dynamic library). Zero or more sub_library
* shared libraries may be use by an umbrella framework or (or dynamic library).
* The name of a sub_library framework is recorded in the following structure.
* For example /usr/lib/libobjc_profile.A.dylib would be recorded as "libobjc".
*/
struct sub_library_command {
uint32_t cmd; /* LC_SUB_LIBRARY */
uint32_t cmdsize; /* includes sub_library string */
union lc_str sub_library; /* the sub_library name */
};
/*
* A program (filetype == MH_EXECUTE) that is
* prebound to its dynamic libraries has one of these for each library that
* the static linker used in prebinding. It contains a bit vector for the
* modules in the library. The bits indicate which modules are bound (1) and
* which are not (0) from the library. The bit for module 0 is the low bit
* of the first byte. So the bit for the Nth module is:
* (linked_modules[N/8] >> N%8) & 1
*/
struct prebound_dylib_command {
uint32_t cmd; /* LC_PREBOUND_DYLIB */
uint32_t cmdsize; /* includes strings */
union lc_str name; /* library's path name */
uint32_t nmodules; /* number of modules in library */
union lc_str linked_modules; /* bit vector of linked modules */
};
/*
* A program that uses a dynamic linker contains a dylinker_command to identify
* the name of the dynamic linker (LC_LOAD_DYLINKER). And a dynamic linker
* contains a dylinker_command to identify the dynamic linker (LC_ID_DYLINKER).
* A file can have at most one of these.
* This struct is also used for the LC_DYLD_ENVIRONMENT load command and
* contains string for dyld to treat like environment variable.
*/
struct dylinker_command {
uint32_t cmd; /* LC_ID_DYLINKER, LC_LOAD_DYLINKER or
LC_DYLD_ENVIRONMENT */
uint32_t cmdsize; /* includes pathname string */
union lc_str name; /* dynamic linker's path name */
};
/*
* Thread commands contain machine-specific data structures suitable for
* use in the thread state primitives. The machine specific data structures
* follow the struct thread_command as follows.
* Each flavor of machine specific data structure is preceded by an uint32_t
* constant for the flavor of that data structure, an uint32_t that is the
* count of uint32_t's of the size of the state data structure and then
* the state data structure follows. This triple may be repeated for many
* flavors. The constants for the flavors, counts and state data structure
* definitions are expected to be in the header file <machine/thread_status.h>.
* These machine specific data structures sizes must be multiples of
* 4 bytes. The cmdsize reflects the total size of the thread_command
* and all of the sizes of the constants for the flavors, counts and state
* data structures.
*
* For executable objects that are unix processes there will be one
* thread_command (cmd == LC_UNIXTHREAD) created for it by the link-editor.
* This is the same as a LC_THREAD, except that a stack is automatically
* created (based on the shell's limit for the stack size). Command arguments
* and environment variables are copied onto that stack.
*/
struct thread_command {
uint32_t cmd; /* LC_THREAD or LC_UNIXTHREAD */
uint32_t cmdsize; /* total size of this command */
/* uint32_t flavor flavor of thread state */
/* uint32_t count count of uint32_t's in thread state */
/* struct XXX_thread_state state thread state for this flavor */
/* ... */
};
/*
* The routines command contains the address of the dynamic shared library
* initialization routine and an index into the module table for the module
* that defines the routine. Before any modules are used from the library the
* dynamic linker fully binds the module that defines the initialization routine
* and then calls it. This gets called before any module initialization
* routines (used for C++ static constructors) in the library.
*/
struct routines_command { /* for 32-bit architectures */
uint32_t cmd; /* LC_ROUTINES */
uint32_t cmdsize; /* total size of this command */
uint32_t init_address; /* address of initialization routine */
uint32_t init_module; /* index into the module table that */
/* the init routine is defined in */
uint32_t reserved1;
uint32_t reserved2;
uint32_t reserved3;
uint32_t reserved4;
uint32_t reserved5;
uint32_t reserved6;
};
/*
* The 64-bit routines command. Same use as above.
*/
struct routines_command_64 { /* for 64-bit architectures */
uint32_t cmd; /* LC_ROUTINES_64 */
uint32_t cmdsize; /* total size of this command */
uint64_t init_address; /* address of initialization routine */
uint64_t init_module; /* index into the module table that */
/* the init routine is defined in */
uint64_t reserved1;
uint64_t reserved2;
uint64_t reserved3;
uint64_t reserved4;
uint64_t reserved5;
uint64_t reserved6;
};
/*
* The symtab_command contains the offsets and sizes of the link-edit 4.3BSD
* "stab" style symbol table information as described in the header files
* <nlist.h> and <stab.h>.
*/
struct symtab_command {
uint32_t cmd; /* LC_SYMTAB */
uint32_t cmdsize; /* sizeof(struct symtab_command) */
uint32_t symoff; /* symbol table offset */
uint32_t nsyms; /* number of symbol table entries */
uint32_t stroff; /* string table offset */
uint32_t strsize; /* string table size in bytes */
};
/*
* This is the second set of the symbolic information which is used to support
* the data structures for the dynamically link editor.
*
* The original set of symbolic information in the symtab_command which contains
* the symbol and string tables must also be present when this load command is
* present. When this load command is present the symbol table is organized
* into three groups of symbols:
* local symbols (static and debugging symbols) - grouped by module
* defined external symbols - grouped by module (sorted by name if not lib)
* undefined external symbols (sorted by name if MH_BINDATLOAD is not set,
* and in order the were seen by the static
* linker if MH_BINDATLOAD is set)
* In this load command there are offsets and counts to each of the three groups
* of symbols.
*
* This load command contains a the offsets and sizes of the following new
* symbolic information tables:
* table of contents
* module table
* reference symbol table
* indirect symbol table
* The first three tables above (the table of contents, module table and
* reference symbol table) are only present if the file is a dynamically linked
* shared library. For executable and object modules, which are files
* containing only one module, the information that would be in these three
* tables is determined as follows:
* table of contents - the defined external symbols are sorted by name
* module table - the file contains only one module so everything in the
* file is part of the module.
* reference symbol table - is the defined and undefined external symbols
*
* For dynamically linked shared library files this load command also contains
* offsets and sizes to the pool of relocation entries for all sections
* separated into two groups:
* external relocation entries
* local relocation entries
* For executable and object modules the relocation entries continue to hang
* off the section structures.
*/
struct dysymtab_command {
uint32_t cmd; /* LC_DYSYMTAB */
uint32_t cmdsize; /* sizeof(struct dysymtab_command) */
/*
* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
* are grouped into the following three groups:
* local symbols (further grouped by the module they are from)
* defined external symbols (further grouped by the module they are from)
* undefined symbols
*
* The local symbols are used only for debugging. The dynamic binding
* process may have to use them to indicate to the debugger the local
* symbols for a module that is being bound.
*
* The last two groups are used by the dynamic binding process to do the
* binding (indirectly through the module table and the reference symbol
* table when this is a dynamically linked shared library file).
*/
uint32_t ilocalsym; /* index to local symbols */
uint32_t nlocalsym; /* number of local symbols */
uint32_t iextdefsym;/* index to externally defined symbols */
uint32_t nextdefsym;/* number of externally defined symbols */
uint32_t iundefsym; /* index to undefined symbols */
uint32_t nundefsym; /* number of undefined symbols */
/*
* For the for the dynamic binding process to find which module a symbol
* is defined in the table of contents is used (analogous to the ranlib
* structure in an archive) which maps defined external symbols to modules
* they are defined in. This exists only in a dynamically linked shared
* library file. For executable and object modules the defined external
* symbols are sorted by name and is use as the table of contents.
*/
uint32_t tocoff; /* file offset to table of contents */
uint32_t ntoc; /* number of entries in table of contents */
/*
* To support dynamic binding of "modules" (whole object files) the symbol
* table must reflect the modules that the file was created from. This is
* done by having a module table that has indexes and counts into the merged
* tables for each module. The module structure that these two entries
* refer to is described below. This exists only in a dynamically linked
* shared library file. For executable and object modules the file only
* contains one module so everything in the file belongs to the module.
*/
uint32_t modtaboff; /* file offset to module table */
uint32_t nmodtab; /* number of module table entries */
/*
* To support dynamic module binding the module structure for each module
* indicates the external references (defined and undefined) each module
* makes. For each module there is an offset and a count into the
* reference symbol table for the symbols that the module references.
* This exists only in a dynamically linked shared library file. For
* executable and object modules the defined external symbols and the
* undefined external symbols indicates the external references.
*/
uint32_t extrefsymoff; /* offset to referenced symbol table */
uint32_t nextrefsyms; /* number of referenced symbol table entries */
/*
* The sections that contain "symbol pointers" and "routine stubs" have
* indexes and (implied counts based on the size of the section and fixed
* size of the entry) into the "indirect symbol" table for each pointer
* and stub. For every section of these two types the index into the
* indirect symbol table is stored in the section header in the field
* reserved1. An indirect symbol table entry is simply a 32bit index into
* the symbol table to the symbol that the pointer or stub is referring to.
* The indirect symbol table is ordered to match the entries in the section.
*/
uint32_t indirectsymoff; /* file offset to the indirect symbol table */
uint32_t nindirectsyms; /* number of indirect symbol table entries */
/*
* To support relocating an individual module in a library file quickly the
* external relocation entries for each module in the library need to be
* accessed efficiently. Since the relocation entries can't be accessed
* through the section headers for a library file they are separated into
* groups of local and external entries further grouped by module. In this
* case the presents of this load command who's extreloff, nextrel,
* locreloff and nlocrel fields are non-zero indicates that the relocation
* entries of non-merged sections are not referenced through the section
* structures (and the reloff and nreloc fields in the section headers are
* set to zero).
*
* Since the relocation entries are not accessed through the section headers
* this requires the r_address field to be something other than a section
* offset to identify the item to be relocated. In this case r_address is
* set to the offset from the vmaddr of the first LC_SEGMENT command.
* For MH_SPLIT_SEGS images r_address is set to the the offset from the
* vmaddr of the first read-write LC_SEGMENT command.
*
* The relocation entries are grouped by module and the module table
* entries have indexes and counts into them for the group of external
* relocation entries for that the module.
*
* For sections that are merged across modules there must not be any
* remaining external relocation entries for them (for merged sections
* remaining relocation entries must be local).
*/
uint32_t extreloff; /* offset to external relocation entries */
uint32_t nextrel; /* number of external relocation entries */
/*
* All the local relocation entries are grouped together (they are not
* grouped by their module since they are only used if the object is moved
* from it staticly link edited address).
*/
uint32_t locreloff; /* offset to local relocation entries */
uint32_t nlocrel; /* number of local relocation entries */
};
/*
* An indirect symbol table entry is simply a 32bit index into the symbol table
* to the symbol that the pointer or stub is refering to. Unless it is for a
* non-lazy symbol pointer section for a defined symbol which strip(1) as
* removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the
* symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that.
*/
#define INDIRECT_SYMBOL_LOCAL 0x80000000
#define INDIRECT_SYMBOL_ABS 0x40000000
/* a table of contents entry */
struct dylib_table_of_contents {
uint32_t symbol_index; /* the defined external symbol
(index into the symbol table) */
uint32_t module_index; /* index into the module table this symbol
is defined in */
};
/* a module table entry */
struct dylib_module {
uint32_t module_name; /* the module name (index into string table) */
uint32_t iextdefsym; /* index into externally defined symbols */
uint32_t nextdefsym; /* number of externally defined symbols */
uint32_t irefsym; /* index into reference symbol table */
uint32_t nrefsym; /* number of reference symbol table entries */
uint32_t ilocalsym; /* index into symbols for local symbols */
uint32_t nlocalsym; /* number of local symbols */
uint32_t iextrel; /* index into external relocation entries */
uint32_t nextrel; /* number of external relocation entries */
uint32_t iinit_iterm; /* low 16 bits are the index into the init
section, high 16 bits are the index into
the term section */
uint32_t ninit_nterm; /* low 16 bits are the number of init section
entries, high 16 bits are the number of
term section entries */
uint32_t /* for this module address of the start of */
objc_module_info_addr; /* the (__OBJC,__module_info) section */
uint32_t /* for this module size of */
objc_module_info_size; /* the (__OBJC,__module_info) section */
};
/* a 64-bit module table entry */
struct dylib_module_64 {
uint32_t module_name; /* the module name (index into string table) */
uint32_t iextdefsym; /* index into externally defined symbols */
uint32_t nextdefsym; /* number of externally defined symbols */
uint32_t irefsym; /* index into reference symbol table */
uint32_t nrefsym; /* number of reference symbol table entries */
uint32_t ilocalsym; /* index into symbols for local symbols */
uint32_t nlocalsym; /* number of local symbols */
uint32_t iextrel; /* index into external relocation entries */
uint32_t nextrel; /* number of external relocation entries */
uint32_t iinit_iterm; /* low 16 bits are the index into the init
section, high 16 bits are the index into
the term section */
uint32_t ninit_nterm; /* low 16 bits are the number of init section
entries, high 16 bits are the number of
term section entries */
uint32_t /* for this module size of */
objc_module_info_size; /* the (__OBJC,__module_info) section */
uint64_t /* for this module address of the start of */
objc_module_info_addr; /* the (__OBJC,__module_info) section */
};
/*
* The entries in the reference symbol table are used when loading the module
* (both by the static and dynamic link editors) and if the module is unloaded
* or replaced. Therefore all external symbols (defined and undefined) are
* listed in the module's reference table. The flags describe the type of
* reference that is being made. The constants for the flags are defined in
* <mach-o/nlist.h> as they are also used for symbol table entries.
*/
struct dylib_reference {
uint32_t isym:24, /* index into the symbol table */
flags:8; /* flags to indicate the type of reference */
};
/*
* The twolevel_hints_command contains the offset and number of hints in the
* two-level namespace lookup hints table.
*/
struct twolevel_hints_command {
uint32_t cmd; /* LC_TWOLEVEL_HINTS */
uint32_t cmdsize; /* sizeof(struct twolevel_hints_command) */
uint32_t offset; /* offset to the hint table */
uint32_t nhints; /* number of hints in the hint table */
};
/*
* The entries in the two-level namespace lookup hints table are twolevel_hint
* structs. These provide hints to the dynamic link editor where to start
* looking for an undefined symbol in a two-level namespace image. The
* isub_image field is an index into the sub-images (sub-frameworks and
* sub-umbrellas list) that made up the two-level image that the undefined
* symbol was found in when it was built by the static link editor. If
* isub-image is 0 the the symbol is expected to be defined in library and not
* in the sub-images. If isub-image is non-zero it is an index into the array
* of sub-images for the umbrella with the first index in the sub-images being
* 1. The array of sub-images is the ordered list of sub-images of the umbrella
* that would be searched for a symbol that has the umbrella recorded as its
* primary library. The table of contents index is an index into the
* library's table of contents. This is used as the starting point of the
* binary search or a directed linear search.
*/
struct twolevel_hint {
uint32_t
isub_image:8, /* index into the sub images */
itoc:24; /* index into the table of contents */
};
/*
* The prebind_cksum_command contains the value of the original check sum for
* prebound files or zero. When a prebound file is first created or modified
* for other than updating its prebinding information the value of the check sum
* is set to zero. When the file has it prebinding re-done and if the value of
* the check sum is zero the original check sum is calculated and stored in
* cksum field of this load command in the output file. If when the prebinding
* is re-done and the cksum field is non-zero it is left unchanged from the
* input file.
*/
struct prebind_cksum_command {
uint32_t cmd; /* LC_PREBIND_CKSUM */
uint32_t cmdsize; /* sizeof(struct prebind_cksum_command) */
uint32_t cksum; /* the check sum or zero */
};
/*
* The uuid load command contains a single 128-bit unique random number that
* identifies an object produced by the static link editor.
*/
struct uuid_command {
uint32_t cmd; /* LC_UUID */
uint32_t cmdsize; /* sizeof(struct uuid_command) */
uint8_t uuid[16]; /* the 128-bit uuid */
};
/*
* The rpath_command contains a path which at runtime should be added to
* the current run path used to find @rpath prefixed dylibs.
*/
struct rpath_command {
uint32_t cmd; /* LC_RPATH */
uint32_t cmdsize; /* includes string */
union lc_str path; /* path to add to run path */
};
/*
* The linkedit_data_command contains the offsets and sizes of a blob
* of data in the __LINKEDIT segment.
*/
struct linkedit_data_command {
uint32_t cmd; /* LC_CODE_SIGNATURE, LC_SEGMENT_SPLIT_INFO,
LC_FUNCTION_STARTS, LC_DATA_IN_CODE,
LC_DYLIB_CODE_SIGN_DRS,
LC_LINKER_OPTIMIZATION_HINT,
LC_DYLD_EXPORTS_TRIE, or
LC_DYLD_CHAINED_FIXUPS. */
uint32_t cmdsize; /* sizeof(struct linkedit_data_command) */
uint32_t dataoff; /* file offset of data in __LINKEDIT segment */
uint32_t datasize; /* file size of data in __LINKEDIT segment */
};
/*
* The encryption_info_command contains the file offset and size of an
* of an encrypted segment.
*/
struct encryption_info_command {
uint32_t cmd; /* LC_ENCRYPTION_INFO */
uint32_t cmdsize; /* sizeof(struct encryption_info_command) */
uint32_t cryptoff; /* file offset of encrypted range */
uint32_t cryptsize; /* file size of encrypted range */
uint32_t cryptid; /* which enryption system,
0 means not-encrypted yet */
};
/*
* The encryption_info_command_64 contains the file offset and size of an
* of an encrypted segment (for use in x86_64 targets).
*/
struct encryption_info_command_64 {
uint32_t cmd; /* LC_ENCRYPTION_INFO_64 */
uint32_t cmdsize; /* sizeof(struct encryption_info_command_64) */
uint32_t cryptoff; /* file offset of encrypted range */
uint32_t cryptsize; /* file size of encrypted range */
uint32_t cryptid; /* which enryption system,
0 means not-encrypted yet */
uint32_t pad; /* padding to make this struct's size a multiple
of 8 bytes */
};
/*
* The version_min_command contains the min OS version on which this
* binary was built to run.
*/
struct version_min_command {
uint32_t cmd; /* LC_VERSION_MIN_MACOSX or
LC_VERSION_MIN_IPHONEOS or
LC_VERSION_MIN_WATCHOS or
LC_VERSION_MIN_TVOS */
uint32_t cmdsize; /* sizeof(struct min_version_command) */
uint32_t version; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
};
/*
* The build_version_command contains the min OS version on which this
* binary was built to run for its platform. The list of known platforms and
* tool values following it.
*/
struct build_version_command {
uint32_t cmd; /* LC_BUILD_VERSION */
uint32_t cmdsize; /* sizeof(struct build_version_command) plus */
/* ntools * sizeof(struct build_tool_version) */
uint32_t platform; /* platform */
uint32_t minos; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */
uint32_t ntools; /* number of tool entries following this */
};
struct build_tool_version {
uint32_t tool; /* enum for the tool */
uint32_t version; /* version number of the tool */
};
/* Known values for the platform field above. */
#define PLATFORM_MACOS 1
#define PLATFORM_IOS 2
#define PLATFORM_TVOS 3
#define PLATFORM_WATCHOS 4
#define PLATFORM_BRIDGEOS 5
#define PLATFORM_MACCATALYST 6
#if (!defined(PLATFORM_MACCATALYST))
#define PLATFORM_MACCATALYST 6
#endif
#define PLATFORM_IOSSIMULATOR 7
#define PLATFORM_TVOSSIMULATOR 8
#define PLATFORM_WATCHOSSIMULATOR 9
#define PLATFORM_DRIVERKIT 10
/* Known values for the tool field above. */
#define TOOL_CLANG 1
#define TOOL_SWIFT 2
#define TOOL_LD 3
/*
* The dyld_info_command contains the file offsets and sizes of
* the new compressed form of the information dyld needs to
* load the image. This information is used by dyld on Mac OS X
* 10.6 and later. All information pointed to by this command
* is encoded using byte streams, so no endian swapping is needed
* to interpret it.
*/
struct dyld_info_command {
uint32_t cmd; /* LC_DYLD_INFO or LC_DYLD_INFO_ONLY */
uint32_t cmdsize; /* sizeof(struct dyld_info_command) */
/*
* Dyld rebases an image whenever dyld loads it at an address different
* from its preferred address. The rebase information is a stream
* of byte sized opcodes whose symbolic names start with REBASE_OPCODE_.
* Conceptually the rebase information is a table of tuples:
* <seg-index, seg-offset, type>
* The opcodes are a compressed way to encode the table by only
* encoding when a column changes. In addition simple patterns
* like "every n'th offset for m times" can be encoded in a few
* bytes.
*/
uint32_t rebase_off; /* file offset to rebase info */
uint32_t rebase_size; /* size of rebase info */
/*
* Dyld binds an image during the loading process, if the image
* requires any pointers to be initialized to symbols in other images.
* The bind information is a stream of byte sized
* opcodes whose symbolic names start with BIND_OPCODE_.
* Conceptually the bind information is a table of tuples:
* <seg-index, seg-offset, type, symbol-library-ordinal, symbol-name, addend>
* The opcodes are a compressed way to encode the table by only
* encoding when a column changes. In addition simple patterns
* like for runs of pointers initialzed to the same value can be
* encoded in a few bytes.
*/
uint32_t bind_off; /* file offset to binding info */
uint32_t bind_size; /* size of binding info */
/*
* Some C++ programs require dyld to unique symbols so that all
* images in the process use the same copy of some code/data.
* This step is done after binding. The content of the weak_bind
* info is an opcode stream like the bind_info. But it is sorted
* alphabetically by symbol name. This enable dyld to walk
* all images with weak binding information in order and look
* for collisions. If there are no collisions, dyld does
* no updating. That means that some fixups are also encoded
* in the bind_info. For instance, all calls to "operator new"
* are first bound to libstdc++.dylib using the information
* in bind_info. Then if some image overrides operator new
* that is detected when the weak_bind information is processed
* and the call to operator new is then rebound.
*/
uint32_t weak_bind_off; /* file offset to weak binding info */
uint32_t weak_bind_size; /* size of weak binding info */
/*
* Some uses of external symbols do not need to be bound immediately.
* Instead they can be lazily bound on first use. The lazy_bind
* are contains a stream of BIND opcodes to bind all lazy symbols.
* Normal use is that dyld ignores the lazy_bind section when
* loading an image. Instead the static linker arranged for the
* lazy pointer to initially point to a helper function which
* pushes the offset into the lazy_bind area for the symbol
* needing to be bound, then jumps to dyld which simply adds
* the offset to lazy_bind_off to get the information on what
* to bind.
*/
uint32_t lazy_bind_off; /* file offset to lazy binding info */
uint32_t lazy_bind_size; /* size of lazy binding infs */
/*
* The symbols exported by a dylib are encoded in a trie. This
* is a compact representation that factors out common prefixes.
* It also reduces LINKEDIT pages in RAM because it encodes all
* information (name, address, flags) in one small, contiguous range.
* The export area is a stream of nodes. The first node sequentially
* is the start node for the trie.
*
* Nodes for a symbol start with a uleb128 that is the length of
* the exported symbol information for the string so far.
* If there is no exported symbol, the node starts with a zero byte.
* If there is exported info, it follows the length.
*
* First is a uleb128 containing flags. Normally, it is followed by
* a uleb128 encoded offset which is location of the content named
* by the symbol from the mach_header for the image. If the flags
* is EXPORT_SYMBOL_FLAGS_REEXPORT, then following the flags is
* a uleb128 encoded library ordinal, then a zero terminated
* UTF8 string. If the string is zero length, then the symbol
* is re-export from the specified dylib with the same name.
* If the flags is EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER, then following
* the flags is two uleb128s: the stub offset and the resolver offset.
* The stub is used by non-lazy pointers. The resolver is used
* by lazy pointers and must be called to get the actual address to use.
*
* After the optional exported symbol information is a byte of
* how many edges (0-255) that this node has leaving it,
* followed by each edge.
* Each edge is a zero terminated UTF8 of the addition chars
* in the symbol, followed by a uleb128 offset for the node that
* edge points to.
*
*/
uint32_t export_off; /* file offset to lazy binding info */
uint32_t export_size; /* size of lazy binding infs */
};
/*
* The following are used to encode rebasing information
*/
#define REBASE_TYPE_POINTER 1
#define REBASE_TYPE_TEXT_ABSOLUTE32 2
#define REBASE_TYPE_TEXT_PCREL32 3
#define REBASE_OPCODE_MASK 0xF0
#define REBASE_IMMEDIATE_MASK 0x0F
#define REBASE_OPCODE_DONE 0x00
#define REBASE_OPCODE_SET_TYPE_IMM 0x10
#define REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB 0x20
#define REBASE_OPCODE_ADD_ADDR_ULEB 0x30
#define REBASE_OPCODE_ADD_ADDR_IMM_SCALED 0x40
#define REBASE_OPCODE_DO_REBASE_IMM_TIMES 0x50
#define REBASE_OPCODE_DO_REBASE_ULEB_TIMES 0x60
#define REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB 0x70
#define REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB 0x80
/*
* The following are used to encode binding information
*/
#define BIND_TYPE_POINTER 1
#define BIND_TYPE_TEXT_ABSOLUTE32 2
#define BIND_TYPE_TEXT_PCREL32 3
#define BIND_SPECIAL_DYLIB_SELF 0
#define BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE -1
#define BIND_SPECIAL_DYLIB_FLAT_LOOKUP -2
#define BIND_SPECIAL_DYLIB_WEAK_LOOKUP -3
#define BIND_SYMBOL_FLAGS_WEAK_IMPORT 0x1
#define BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION 0x8
#define BIND_OPCODE_MASK 0xF0
#define BIND_IMMEDIATE_MASK 0x0F
#define BIND_OPCODE_DONE 0x00
#define BIND_OPCODE_SET_DYLIB_ORDINAL_IMM 0x10
#define BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB 0x20
#define BIND_OPCODE_SET_DYLIB_SPECIAL_IMM 0x30
#define BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM 0x40
#define BIND_OPCODE_SET_TYPE_IMM 0x50
#define BIND_OPCODE_SET_ADDEND_SLEB 0x60
#define BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB 0x70
#define BIND_OPCODE_ADD_ADDR_ULEB 0x80
#define BIND_OPCODE_DO_BIND 0x90
#define BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB 0xA0
#define BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED 0xB0
#define BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB 0xC0
#define BIND_OPCODE_THREADED 0xD0
#define BIND_SUBOPCODE_THREADED_SET_BIND_ORDINAL_TABLE_SIZE_ULEB 0x00
#define BIND_SUBOPCODE_THREADED_APPLY 0x01
/*
* The following are used on the flags byte of a terminal node
* in the export information.
*/
#define EXPORT_SYMBOL_FLAGS_KIND_MASK 0x03
#define EXPORT_SYMBOL_FLAGS_KIND_REGULAR 0x00
#define EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL 0x01
#define EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE 0x02
#define EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION 0x04
#define EXPORT_SYMBOL_FLAGS_REEXPORT 0x08
#define EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER 0x10
/*
* The linker_option_command contains linker options embedded in object files.
*/
struct linker_option_command {
uint32_t cmd; /* LC_LINKER_OPTION only used in MH_OBJECT filetypes */
uint32_t cmdsize;
uint32_t count; /* number of strings */
/* concatenation of zero terminated UTF8 strings.
Zero filled at end to align */
};
/*
* The symseg_command contains the offset and size of the GNU style
* symbol table information as described in the header file <symseg.h>.
* The symbol roots of the symbol segments must also be aligned properly
* in the file. So the requirement of keeping the offsets aligned to a
* multiple of a 4 bytes translates to the length field of the symbol
* roots also being a multiple of a long. Also the padding must again be
* zeroed. (THIS IS OBSOLETE and no longer supported).
*/
struct symseg_command {
uint32_t cmd; /* LC_SYMSEG */
uint32_t cmdsize; /* sizeof(struct symseg_command) */
uint32_t offset; /* symbol segment offset */
uint32_t size; /* symbol segment size in bytes */
};
/*
* The ident_command contains a free format string table following the
* ident_command structure. The strings are null terminated and the size of
* the command is padded out with zero bytes to a multiple of 4 bytes/
* (THIS IS OBSOLETE and no longer supported).
*/
struct ident_command {
uint32_t cmd; /* LC_IDENT */
uint32_t cmdsize; /* strings that follow this command */
};
/*
* The fvmfile_command contains a reference to a file to be loaded at the
* specified virtual address. (Presently, this command is reserved for
* internal use. The kernel ignores this command when loading a program into
* memory).
*/
struct fvmfile_command {
uint32_t cmd; /* LC_FVMFILE */
uint32_t cmdsize; /* includes pathname string */
union lc_str name; /* files pathname */
uint32_t header_addr; /* files virtual address */
};
/*
* The entry_point_command is a replacement for thread_command.
* It is used for main executables to specify the location (file offset)
* of main(). If -stack_size was used at link time, the stacksize
* field will contain the stack size need for the main thread.
*/
struct entry_point_command {
uint32_t cmd; /* LC_MAIN only used in MH_EXECUTE filetypes */
uint32_t cmdsize; /* 24 */
uint64_t entryoff; /* file (__TEXT) offset of main() */
uint64_t stacksize;/* if not zero, initial stack size */
};
/*
* The source_version_command is an optional load command containing
* the version of the sources used to build the binary.
*/
struct source_version_command {
uint32_t cmd; /* LC_SOURCE_VERSION */
uint32_t cmdsize; /* 16 */
uint64_t version; /* A.B.C.D.E packed as a24.b10.c10.d10.e10 */
};
/*
* The LC_DATA_IN_CODE load commands uses a linkedit_data_command
* to point to an array of data_in_code_entry entries. Each entry
* describes a range of data in a code section.
*/
struct data_in_code_entry {
uint32_t offset; /* from mach_header to start of data range*/
uint16_t length; /* number of bytes in data range */
uint16_t kind; /* a DICE_KIND_* value */
};
#define DICE_KIND_DATA 0x0001
#define DICE_KIND_JUMP_TABLE8 0x0002
#define DICE_KIND_JUMP_TABLE16 0x0003
#define DICE_KIND_JUMP_TABLE32 0x0004
#define DICE_KIND_ABS_JUMP_TABLE32 0x0005
/*
* Sections of type S_THREAD_LOCAL_VARIABLES contain an array
* of tlv_descriptor structures.
*/
struct tlv_descriptor
{
void* (*thunk)(struct tlv_descriptor*);
unsigned long key;
unsigned long offset;
};
/*
* LC_NOTE commands describe a region of arbitrary data included in a Mach-O
* file. Its initial use is to record extra data in MH_CORE files.
*/
struct note_command {
uint32_t cmd; /* LC_NOTE */
uint32_t cmdsize; /* sizeof(struct note_command) */
char data_owner[16]; /* owner name for this LC_NOTE */
uint64_t offset; /* file offset of this data */
uint64_t size; /* length of data region */
};
#endif /* _MACHO_LOADER_H_ */
lib/libc/include/x86_64-macos-gnu/mach/vm_prot.h
+152
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/*
* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
*/
/*
* File: mach/vm_prot.h
* Author: Avadis Tevanian, Jr., Michael Wayne Young
*
* Virtual memory protection definitions.
*
*/
#ifndef _MACH_VM_PROT_H_
#define _MACH_VM_PROT_H_
/*
* Types defined:
*
* vm_prot_t VM protection values.
*/
typedef int vm_prot_t;
/*
* Protection values, defined as bits within the vm_prot_t type
*/
#define VM_PROT_NONE ((vm_prot_t) 0x00)
#define VM_PROT_READ ((vm_prot_t) 0x01) /* read permission */
#define VM_PROT_WRITE ((vm_prot_t) 0x02) /* write permission */
#define VM_PROT_EXECUTE ((vm_prot_t) 0x04) /* execute permission */
/*
* The default protection for newly-created virtual memory
*/
#define VM_PROT_DEFAULT (VM_PROT_READ|VM_PROT_WRITE)
/*
* The maximum privileges possible, for parameter checking.
*/
#define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
/*
* An invalid protection value.
* Used only by memory_object_lock_request to indicate no change
* to page locks. Using -1 here is a bad idea because it
* looks like VM_PROT_ALL and then some.
*/
#define VM_PROT_NO_CHANGE ((vm_prot_t) 0x08)
/*
* When a caller finds that he cannot obtain write permission on a
* mapped entry, the following flag can be used. The entry will
* be made "needs copy" effectively copying the object (using COW),
* and write permission will be added to the maximum protections
* for the associated entry.
*/
#define VM_PROT_COPY ((vm_prot_t) 0x10)
/*
* Another invalid protection value.
* Used only by memory_object_data_request upon an object
* which has specified a copy_call copy strategy. It is used
* when the kernel wants a page belonging to a copy of the
* object, and is only asking the object as a result of
* following a shadow chain. This solves the race between pages
* being pushed up by the memory manager and the kernel
* walking down the shadow chain.
*/
#define VM_PROT_WANTS_COPY ((vm_prot_t) 0x10)
/*
* Another invalid protection value.
* Indicates that the other protection bits are to be applied as a mask
* against the actual protection bits of the map entry.
*/
#define VM_PROT_IS_MASK ((vm_prot_t) 0x40)
/*
* Another invalid protection value to support execute-only protection.
* VM_PROT_STRIP_READ is a special marker that tells mprotect to not
* set VM_PROT_READ. We have to do it this way because existing code
* expects the system to set VM_PROT_READ if VM_PROT_EXECUTE is set.
* VM_PROT_EXECUTE_ONLY is just a convenience value to indicate that
* the memory should be executable and explicitly not readable. It will
* be ignored on platforms that do not support this type of protection.
*/
#define VM_PROT_STRIP_READ ((vm_prot_t) 0x80)
#define VM_PROT_EXECUTE_ONLY (VM_PROT_EXECUTE|VM_PROT_STRIP_READ)
#endif /* _MACH_VM_PROT_H_ */
lib/libc/include/x86_64-macos-gnu/sys/_types/_os_inline.h
+34
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@@ -0,0 +1,34 @@
/*
* Copyright (c) 2003-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#if !defined(OS_INLINE)
# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
# define OS_INLINE static inline
# else
# define OS_INLINE static __inline__
# endif
#endif /* OS_INLINE */