#ifndef LINKER_SCRIPT #errorThis file should only be included in vmlinux.lds.S #endif
#include <asm/image.h>
/* * There aren't any ELF relocations we can use to endian-swap values known only * at link time (e.g. the subtraction of two symbol addresses), so we must get * the linker to endian-swap certain values before emitting them. * * Note that, in order for this to work when building the ELF64 PIE executable * (for KASLR), these values should not be referenced via R_AARCH64_ABS64 * relocations, since these are fixed up at runtime rather than at build time * when PIE is in effect. So we need to split them up in 32-bit high and low * words.
*/ #ifdef CONFIG_CPU_BIG_ENDIAN #define DATA_LE32(data) \
((((data) & 0x000000ff) << 24) | \
(((data) & 0x0000ff00) << 8) | \
(((data) & 0x00ff0000) >> 8) | \
(((data) & 0xff000000) >> 24)) #else #define DATA_LE32(data) ((data) & 0xffffffff) #endif
/* * These will output as part of the Image header, which should be little-endian * regardless of the endianness of the kernel. While constant values could be * endian swapped in head.S, all are done here for consistency.
*/ #define HEAD_SYMBOLS \
DEFINE_IMAGE_LE64(_kernel_size_le, _end - _text); \
DEFINE_IMAGE_LE64(_kernel_flags_le, __HEAD_FLAGS);
#endif/* __ARM64_KERNEL_IMAGE_H */
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