forked from openkylin/platform_build
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#ifndef COMMON_H
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#define COMMON_H
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#include <libelf.h>
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#include <elf.h>
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#define unlikely(expr) __builtin_expect (expr, 0)
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#define likely(expr) __builtin_expect (expr, 1)
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#define MIN(a,b) ((a)<(b)?(a):(b)) /* no side effects in arguments allowed! */
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typedef int (*section_match_fn_t)(Elf *, Elf_Scn *, void *);
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void map_over_sections(Elf *, section_match_fn_t, void *);
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typedef int (*segment_match_fn_t)(Elf *, Elf32_Phdr *, void *);
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void map_over_segments(Elf *, segment_match_fn_t, void *);
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typedef struct {
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Elf_Scn *sect;
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Elf32_Shdr *hdr;
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Elf_Data *data;
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size_t index;
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} section_info_t;
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static inline void get_section_info(Elf_Scn *sect, section_info_t *info)
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{
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info->sect = sect;
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info->data = elf_getdata(sect, 0);
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info->hdr = elf32_getshdr(sect);
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info->index = elf_ndxscn(sect);
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}
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static inline int is_host_little(void)
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{
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short val = 0x10;
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return ((char *)&val)[0] != 0;
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}
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static inline long switch_endianness(long val)
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{
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long newval;
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((char *)&newval)[3] = ((char *)&val)[0];
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((char *)&newval)[2] = ((char *)&val)[1];
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((char *)&newval)[1] = ((char *)&val)[2];
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((char *)&newval)[0] = ((char *)&val)[3];
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return newval;
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}
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#endif/*COMMON_H*/
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