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/*

 * Definitions for ELF Symbol tables, symbols

 * Based on Portable Formats Specification v1.1

 *

 * Copyright (C) 2008 Bahadir Balban

 */

#ifndef __ELFSYM_H__

#define __ELFSYM_H__

#include <l4/types.h>

struct elf_symbol_entry {

        u32     st_name;        /* Index into string table */

        u32     st_value;       /* Symbol value; address, aboslute etc. */

        u32     st_size;        /* Number of bytes contained in object */

        u8      st_info;        /* Type and binding attributes */

        u8      st_other;       /* Unused, 0 */

        u16     st_shndx;       /* Section header index associated with entry */

} __attribute__((__packed__));

/* To manipulate binding and type attributes on st_info field */

#define ELF32_ST_BIND(i)        ((i) >> 4)

#define ELF32_ST_TYPE(i)        ((i) & 0xF)

#define ELF32_ST_INFO(b, t)     (((b) << 4) + ((t) & 0xF))

/* Symbol binding codes */

#define STB_LOCAL               0

#define STB_GLOBAL              1

#define STB_WEAK                2

#define STB_LOPROC              13

#define STB_HIPROC              15

/* Symbol types */

#define STT_NOTYPE              0

#define STT_OBJECT              1

#define STT_FUNC                2

#define STT_SECTION             3

#define STT_FILE                4

#define STT_LOPROC              13

#define STT_HIPROC              15

/* Relocation structures */

struct elf_rel {

        u32     r_offset;

        u32     r_info;

} __attribute__((__packed__));

struct elf_rela {

        u32     r_offset;

        u32     r_info;

        s32     r_addend;

} __attribute__((__packed__));

/* Macros to manipulate r_info field */

#define ELF32_R_SYM(i)                  ((i) >> 8)

#define ELF32_R_TYPE(i)                 ((u8)(i))

#define ELF32_R_INFO(s,t)               (((s) << 8) + (u8)(t))

#endif /* __ELFSYM_H__ */