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feafcd972c
Projects such as linux and u-boot run sparse on libfdt. libfdt contains the notion of endianness via usage of endian conversion functions such as fdt32_to_cpu. As such, in order to pass endian checks, libfdt has to annotate its fdt variables such that sparse can warn when mixing bitwise and regular integers. This patch adds these new fdtXX_t types and, ifdef __CHECKER__ (a symbol sparse defines), includes the bitwise annotation. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
#ifndef _LIBFDT_ENV_H
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#define _LIBFDT_ENV_H
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#ifdef __CHECKER__
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#define __force __attribute__((force))
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#define __bitwise __attribute__((bitwise))
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#else
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#define __force
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#define __bitwise
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#endif
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typedef uint16_t __bitwise fdt16_t;
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typedef uint32_t __bitwise fdt32_t;
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typedef uint64_t __bitwise fdt64_t;
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#define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n])
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#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
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#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
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(EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
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#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
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(EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
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(EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
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(EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
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static inline uint16_t fdt16_to_cpu(fdt16_t x)
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{
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return (__force uint16_t)CPU_TO_FDT16(x);
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}
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static inline fdt16_t cpu_to_fdt16(uint16_t x)
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{
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return (__force fdt16_t)CPU_TO_FDT16(x);
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}
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static inline uint32_t fdt32_to_cpu(fdt32_t x)
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{
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return (__force uint32_t)CPU_TO_FDT32(x);
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}
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static inline fdt32_t cpu_to_fdt32(uint32_t x)
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{
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return (__force fdt32_t)CPU_TO_FDT32(x);
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}
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static inline uint64_t fdt64_to_cpu(fdt64_t x)
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{
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return (__force uint64_t)CPU_TO_FDT64(x);
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}
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static inline fdt64_t cpu_to_fdt64(uint64_t x)
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{
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return (__force fdt64_t)CPU_TO_FDT64(x);
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}
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#undef CPU_TO_FDT64
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#undef CPU_TO_FDT32
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#undef CPU_TO_FDT16
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#undef EXTRACT_BYTE
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#endif /* _LIBFDT_ENV_H */
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