---

elf.h

/* $Id: elf.h 31601 2008-05-12 06:37:53Z adam $ */
/* (c) 2003-2006 Technische Universitaet Dresden
 * This file is part of the exec package, which is distributed under
 * the terms of the GNU General Public License 2. Please see the
 * COPYING file for details. */

#ifndef _L4_EXEC_ELF_H
#define _L4_EXEC_ELF_H

#include <l4/sys/l4int.h>

/* map ELF types to L4 types */

typedef l4_uint32_t     Elf32_Addr;             /* size 4 align 4 */
typedef l4_uint32_t     Elf32_Off;              /* size 4 align 4 */
typedef l4_uint16_t     Elf32_Half;             /* size 2 align 2 */
typedef l4_uint32_t     Elf32_Word;             /* size 4 align 4 */
typedef l4_int32_t      Elf32_Sword;            /* size 4 align 4 */

typedef l4_uint64_t     Elf64_Addr;             /* size 8 align 8 */
typedef l4_uint64_t     Elf64_Off;              /* size 8 align 8 */
typedef l4_uint16_t     Elf64_Half;             /* size 2 align 2 */
typedef l4_uint32_t     Elf64_Word;             /* size 4 align 4 */
typedef l4_int32_t      Elf64_Sword;            /* size 4 align 4 */
typedef l4_uint64_t     Elf64_Xword;            /* size 8 align 8 */
typedef l4_int64_t      Elf64_Sxword;           /* size 8 align 8 */

#if L4_MWORD_BITS == 64
#define ElfW(type)      _ElfW(Elf, 64, type)
#else
#define ElfW(type)      _ElfW(Elf, 32, type)
#endif
#define _ElfW(e,w,t)    __ElfW(e, w, _##t)
#define __ElfW(e,w,t)   e##w##t

#ifdef ARCH_x86
#define L4_ARCH_EI_DATA      ELFDATA2LSB
#define L4_ARCH_E_MACHINE    EM_386
#define L4_ARCH_EI_CLASS     ELFCLASS32
#else
#ifdef ARCH_amd64
#define L4_ARCH_EI_DATA      ELFDATA2LSB
#define L4_ARCH_E_MACHINE    EM_AMD64
#define L4_ARCH_EI_CLASS     ELFCLASS64
#else
#ifdef ARCH_arm
#define L4_ARCH_EI_DATA      ELFDATA2LSB
#define L4_ARCH_E_MACHINE    EM_ARM
#define L4_ARCH_EI_CLASS     ELFCLASS32
#else
#warning elf.h: Unsupported build architecture!
#endif
#endif
#endif


/*************************************/
/* ELF Header - figure 1-3, page 1-3 */
/*************************************/

#define EI_NIDENT 16                    
typedef struct {
    unsigned char       e_ident[EI_NIDENT];
    Elf32_Half          e_type;         
    Elf32_Half          e_machine;      
    Elf32_Word          e_version;      
    Elf32_Addr          e_entry;        
    Elf32_Off           e_phoff;        
    Elf32_Off           e_shoff;        
    Elf32_Word          e_flags;        
    Elf32_Half          e_ehsize;       
    Elf32_Half          e_phentsize;    
    Elf32_Half          e_phnum;        
    Elf32_Half          e_shentsize;    
    Elf32_Half          e_shnum;        
    Elf32_Half          e_shstrndx;     
} Elf32_Ehdr;

typedef struct {
    unsigned char       e_ident[EI_NIDENT];
    Elf64_Half          e_type;         
    Elf64_Half          e_machine;      
    Elf64_Word          e_version;      
    Elf64_Addr          e_entry;        
    Elf64_Off           e_phoff;        
    Elf64_Off           e_shoff;        
    Elf64_Word          e_flags;        
    Elf64_Half          e_ehsize;       
    Elf64_Half          e_phentsize;    
    Elf64_Half          e_phnum;        
    Elf64_Half          e_shentsize;    
    Elf64_Half          e_shnum;        
    Elf64_Half          e_shstrndx;     
} Elf64_Ehdr;

#define EI_CLASS        4               /* File class byte index */
#define ELFCLASSNONE    0               /* Invalid class */
#define ELFCLASS32      1               /* 32-bit objects */
#define ELFCLASS64      2               /* 64-bit objects */
#define ELFCLASSNUM     3

#define EI_DATA         5               /* Data encoding byte index */
#define ELFDATANONE     0               /* Invalid data encoding */
#define ELFDATA2LSB     1               /* 2's complement, little endian */
#define ELFDATA2MSB     2               /* 2's complement, big endian */
#define ELFDATANUM      3

#define EI_VERSION      6               /* File version byte index */
                                        /* Value must be EV_CURRENT */

#define EI_OSABI        7               /* OS ABI identification */
#define ELFOSABI_NONE           0       /* UNIX System V ABI */
#define ELFOSABI_SYSV           0       /* Alias.  */
#define ELFOSABI_HPUX           1       /* HP-UX */
#define ELFOSABI_NETBSD         2       /* NetBSD.  */
#define ELFOSABI_LINUX          3       /* Linux.  */
#define ELFOSABI_SOLARIS        6       /* Sun Solaris.  */
#define ELFOSABI_AIX            7       /* IBM AIX.  */
#define ELFOSABI_IRIX           8       /* SGI Irix.  */
#define ELFOSABI_FREEBSD        9       /* FreeBSD.  */
#define ELFOSABI_TRU64          10      /* Compaq TRU64 UNIX.  */
#define ELFOSABI_MODESTO        11      /* Novell Modesto.  */
#define ELFOSABI_OPENBSD        12      /* OpenBSD.  */
#define ELFOSABI_ARM            97      /* ARM */
#define ELFOSABI_STANDALONE     255     /* Standalone (embedded) application */

#define EI_ABIVERSION   8               /* ABI version */

#define EI_PAD          9               /* Byte index of padding bytes */

/* object file type - page 1-3 (e_type) */

#define ET_NONE         0       
#define ET_REL          1       
#define ET_EXEC         2       
#define ET_DYN          3       
#define ET_CORE         4       
#define ET_LOPROC       0xff00  
#define ET_HIPROC       0xffff  
/* required architecture - page 1-4 (e_machine) */

#define EM_NONE         0       
#define EM_M32          1       
#define EM_SPARC        2       
#define EM_386          3       
#define EM_68K          4       
#define EM_88K          5       
#define EM_860          7       
#define EM_MIPS         8       
#define EM_MIPS_RS4_BE  10      
#define EM_SPARC64      11      
#define EM_PARISC       15      
#define EM_VPP500       17      
#define EM_SPARC32PLUS  18      
#define EM_960          19      
#define EM_PPC          20      
#define EM_V800         36      
#define EM_FR20         37      
#define EM_RH32         38      
#define EM_RCE          39      
#define EM_ARM          40      
#define EM_ALPHA        41      
#define EM_SH           42      
#define EM_SPARCV9      43      
#define EM_TRICORE      44      
#define EM_ARC          45      
#define EM_H8_300       46      
#define EM_H8_300H      47      
#define EM_H8S          48      
#define EM_H8_500       49      
#define EM_IA_64        50      
#define EM_MIPS_X       51      
#define EM_COLDFIRE     52      
#define EM_68HC12       53      
#define EM_AMD64        62

#if 0
#define EM_ALPHA        0x9026  /* interium value used by Linux until the
                                   committee comes up with a final number */
#define EM_S390         0xA390  /* interium value used for IBM S390 */
#endif

/* object file version - page 1-4 (e_version) */

#define EV_NONE         0       
#define EV_CURRENT      1       
/* e_ident[] Identification Indexes - figure 1-4, page 1-5 */

#define EI_MAG0         0       
#define EI_MAG1         1       
#define EI_MAG2         2       
#define EI_MAG3         3       
#define EI_CLASS        4       
#define EI_DATA         5       
#define EI_VERSION      6       
#define EI_OSABI        7       
#define EI_ABIVERSION   8       
#define EI_PAD          9       
#define EI_NIDENT       16      
/* magic number - page 1-5 */

#define ELFMAG0         0x7f    
#define ELFMAG1         'E'     
#define ELFMAG2         'L'     
#define ELFMAG3         'F'     
/* file class or capacity - page 1-6 */

#define ELFCLASSNONE    0       
#define ELFCLASSS32     1       
#define ELFCLASSS64     2       
/* data encoding - page 1-6 */

#define ELFDATANONE     0       
#define ELFDATA2LSB     1       
#define ELFDATA2MSB     2       
/* Identify operating system and ABI to which the object is targeted */

#define ELFOSABI_SYSV   0       
#define ELFOSABI_HPUX   1       
#define ELFOSABI_STANDALONE 255  
/***********************/
/* Sections - page 1-8 */
/***********************/

/* special section indexes */

#define SHN_UNDEF       0               
#define SHN_LORESERVE   0xff00          
#define SHN_LOPROC      0xff00          
#define SHN_HIPROC      0xff1f          
#define SHN_ABS         0xfff1          
#define SHN_COMMON      0xfff2          
#define SHN_HIRESERVE   0xffff          
typedef struct {
    Elf32_Word          sh_name;        
    Elf32_Word          sh_type;        
    Elf32_Word          sh_flags;       
    Elf32_Addr          sh_addr;        
    Elf32_Off           sh_offset;      
    Elf32_Word          sh_size;        
    Elf32_Word          sh_link;        
    Elf32_Word          sh_info;        
    Elf32_Word          sh_addralign;   
    Elf32_Word          sh_entsize;     
} Elf32_Shdr;

typedef struct {
    Elf64_Word          sh_name;        
    Elf64_Word          sh_type;        
    Elf64_Xword         sh_flags;       
    Elf64_Addr          sh_addr;        
    Elf64_Off           sh_offset;      
    Elf64_Xword         sh_size;        
    Elf64_Word          sh_link;        
    Elf64_Word          sh_info;        
    Elf64_Xword         sh_addralign;   
    Elf64_Xword         sh_entsize;     
} Elf64_Shdr;

/* section type - figure 1-10, page 1-10 */

#define SHT_NULL        0
#define SHT_PROGBITS    1
#define SHT_SYMTAB      2
#define SHT_STRTAB      3
#define SHT_RELA        4
#define SHT_HASH        5
#define SHT_DYNAMIC     6
#define SHT_NOTE        7
#define SHT_NOBITS      8
#define SHT_REL         9
#define SHT_SHLIB       10
#define SHT_DYNSYM      11
#define SHT_INIT_ARRAY    14            
#define SHT_FINI_ARRAY    15            
#define SHT_PREINIT_ARRAY 16            
#define SHT_GROUP         17            
#define SHT_SYMTAB_SHNDX  18            
#define SHT_NUM           19            
#define SHT_LOOS        0x60000000
#define SHT_HIOS        0x6fffffff
#define SHT_LOPROC      0x70000000
#define SHT_HIPROC      0x7fffffff
#define SHT_LOUSER      0x80000000
#define SHT_HIUSER      0xffffffff

/* section attribute flags - page 1-12, figure 1-12 */

#define SHF_WRITE       0x1             
#define SHF_ALLOC       0x2             
#define SHF_EXECINSTR   0x4             
#define SHF_MERGE       0x10            
#define SHF_STRINGS     0x20            
#define SHF_INFO_LINK   0x40            
#define SHF_LINK_ORDER  0x80            
#define SHF_OS_NONCONFORMING 0x100      
#define SHF_GROUP       0x200           
#define SHF_TLS         0x400           
#define SHF_MASKOS      0x0ff00000      
#define SHF_MASKPROC    0xf0000000      
/*****************************************/
/* Program Header - figure 2-1, page 2-2 */
/*****************************************/

typedef struct {
    Elf32_Word          p_type;         
    Elf32_Off           p_offset;       
    Elf32_Addr          p_vaddr;        
    Elf32_Addr          p_paddr;        
    Elf32_Word          p_filesz;       
    Elf32_Word          p_memsz;        
    Elf32_Word          p_flags;        
    Elf32_Word          p_align;        
} Elf32_Phdr;

typedef struct {
    Elf64_Word          p_type;         
    Elf64_Word          p_flags;        
    Elf64_Off           p_offset;       
    Elf64_Addr          p_vaddr;        
    Elf64_Addr          p_paddr;        
    Elf64_Xword         p_filesz;       
    Elf64_Xword         p_memsz;        
    Elf64_Xword         p_align;        
} Elf64_Phdr;

/* segment types - figure 2-2, page 2-3 */

#define PT_NULL         0          
#define PT_LOAD         1          
#define PT_DYNAMIC      2          
#define PT_INTERP       3          
#define PT_NOTE         4          
#define PT_SHLIB        5          
#define PT_PHDR         6          
#define PT_TLS          7          
#define PT_NUM          8          
#define PT_LOOS         0x60000000 
#define PT_HIOS         0x6fffffff 
#define PT_LOPROC       0x70000000 
#define PT_HIPROC       0x7fffffff 
/* segment permissions - page 2-3 */

#define PF_X            0x1
#define PF_W            0x2
#define PF_R            0x4
#define PF_MASKOS       0x0ff00000
#define PF_MASKPROC     0x7fffffff

/* Legal values for note segment descriptor types for core files. */

#define NT_PRSTATUS     1       
#define NT_FPREGSET     2       
#define NT_PRPSINFO     3       
#define NT_PRXREG       4       
#define NT_TASKSTRUCT   4       
#define NT_PLATFORM     5       
#define NT_AUXV         6       
#define NT_GWINDOWS     7       
#define NT_ASRS         8       
#define NT_PSTATUS      10      
#define NT_PSINFO       13      
#define NT_PRCRED       14      
#define NT_UTSNAME      15      
#define NT_LWPSTATUS    16      
#define NT_LWPSINFO     17      
#define NT_PRFPXREG     20      
/* Legal values for the note segment descriptor types for object files.  */

#define NT_VERSION      1       
/* Dynamic structure - figure 2-9, page 2-12 */

typedef struct {
    Elf32_Sword         d_tag;  
    union {
        Elf32_Word      d_val;  
        Elf32_Addr      d_ptr;  
    } d_un;
} Elf32_Dyn;

typedef struct {
    Elf64_Sxword        d_tag;  
    union {
        Elf64_Xword     d_val;  
        Elf64_Addr      d_ptr;  
    } d_un;
} Elf64_Dyn;

#define DT_NULL         0       
#define DT_NEEDED       1       
#define DT_PLTRELSZ     2       
#define DT_PLTGOT       3       
#define DT_HASH         4       
#define DT_STRTAB       5       
#define DT_SYMTAB       6       
#define DT_RELA         7       
#define DT_RELASZ       8       
#define DT_RELAENT      9       
#define DT_STRSZ        10      
#define DT_SYMENT       11      
#define DT_INIT         12      
#define DT_FINI         13      
#define DT_SONAME       14      
#define DT_RPATH        15      
#define DT_SYMBOLIC     16      
#define DT_REL          17      
#define DT_RELSZ        18      
#define DT_RELENT       19      
#define DT_PTRREL       20      
#define DT_DEBUG        21      
#define DT_TEXTREL      22      
#define DT_JMPREL       23      
#define DT_BIND_NOW     24      
#define DT_INIT_ARRAY   25      
#define DT_FINI_ARRAY   26      
#define DT_INIT_ARRAYSZ 27      
#define DT_FINI_ARRAYSZ 28      
#define DT_RUNPATH      29      
#define DT_FLAGS        30      
#define DT_ENCODING     32      
#define DT_PREINIT_ARRAY 32     
#define DT_PREINIT_ARRAYSZ 33   
#define DT_NUM          34      
#define DT_LOOS         0x6000000d 
#define DT_HIOS         0x6ffff000 
#define DT_LOPROC       0x70000000 
#define DT_HIPROC       0x7fffffff 
/* Values of `d_un.d_val' in the DT_FLAGS entry.  */
#define DF_ORIGIN       0x00000001      
#define DF_SYMBOLIC     0x00000002      
#define DF_TEXTREL      0x00000004      
#define DF_BIND_NOW     0x00000008      
#define DF_STATIC_TLS   0x00000010      
/* State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1
   entry in the dynamic section.  */
#define DF_1_NOW        0x00000001      
#define DF_1_GLOBAL     0x00000002      
#define DF_1_GROUP      0x00000004      
#define DF_1_NODELETE   0x00000008      
#define DF_1_LOADFLTR   0x00000010      
#define DF_1_INITFIRST  0x00000020      
#define DF_1_NOOPEN     0x00000040      
#define DF_1_ORIGIN     0x00000080      
#define DF_1_DIRECT     0x00000100      
#define DF_1_TRANS      0x00000200
#define DF_1_INTERPOSE  0x00000400      
#define DF_1_NODEFLIB   0x00000800      
#define DF_1_NODUMP     0x00001000      
#define DF_1_CONFALT    0x00002000      
#define DF_1_ENDFILTEE  0x00004000      
#define DF_1_DISPRELDNE 0x00008000      
#define DF_1_DISPRELPND 0x00010000      
/* Flags for the feature selection in DT_FEATURE_1.  */
#define DTF_1_PARINIT   0x00000001
#define DTF_1_CONFEXP   0x00000002

/* Flags in the DT_POSFLAG_1 entry effecting only the next DT_* entry.  */
#define DF_P1_LAZYLOAD  0x00000001      
#define DF_P1_GROUPPERM 0x00000002      
/* Relocation - page 1-21, figure 1-20 */

typedef struct {
    Elf32_Addr          r_offset;
    Elf32_Word          r_info;
} Elf32_Rel;

typedef struct {
    Elf32_Addr          r_offset;
    Elf32_Word          r_info;
    Elf32_Sword         r_addend;
} Elf32_Rela;

typedef struct {
    Elf64_Addr          r_offset;
    Elf64_Xword         r_info;
} Elf64_Rel;

typedef struct {
    Elf64_Addr          r_offset;
    Elf64_Xword         r_info;
    Elf64_Sxword        r_addend;
} Elf64_Rela;

#define ELF32_R_SYM(i)    ((i)>>8)
#define ELF32_R_TYPE(i)   ((unsigned char)(i))
#define ELF32_R_INFO(s,t) (((s)<<8)+(unsigned char)(t))

#define ELF64_R_SYM(i)    ((i)>>32)
#define ELF64_R_TYPE(i)   ((i)&0xffffffffL)
#define ELF64_R_INFO(s,t) (((s)<<32)+(t)&0xffffffffL)

/* Relocation types (processor specific) - page 1-23, figure 1-22 */

#define R_386_NONE      0       
#define R_386_32        1       
#define R_386_PC32      2       
#define R_386_GOT32     3       
#define R_386_PLT32     4       
#define R_386_COPY      5       
#define R_386_GLOB_DAT  6       
#define R_386_JMP_SLOT  7       
#define R_386_RELATIVE  8       
#define R_386_GOTOFF    9       
#define R_386_GOTPC     10      
#define R_386_32PLT        11
#define R_386_TLS_TPOFF    14           /* Offset in static TLS block */
#define R_386_TLS_IE       15           /* Address of GOT entry for static TLS
                                           block offset */
#define R_386_TLS_GOTIE    16           /* GOT entry for static TLS block
                                           offset */
#define R_386_TLS_LE       17           /* Offset relative to static TLS
                                           block */
#define R_386_TLS_GD       18           /* Direct 32 bit for GNU version of
                                           general dynamic thread local data */
#define R_386_TLS_LDM      19           /* Direct 32 bit for GNU version of
                                           local dynamic thread local data
                                           in LE code */
#define R_386_16           20
#define R_386_PC16         21
#define R_386_8            22
#define R_386_PC8          23
#define R_386_TLS_GD_32    24           /* Direct 32 bit for general dynamic
                                           thread local data */
#define R_386_TLS_GD_PUSH  25           /* Tag for pushl in GD TLS code */
#define R_386_TLS_GD_CALL  26           /* Relocation for call to
                                           __tls_get_addr() */
#define R_386_TLS_GD_POP   27           /* Tag for popl in GD TLS code */
#define R_386_TLS_LDM_32   28           /* Direct 32 bit for local dynamic
                                           thread local data in LE code */
#define R_386_TLS_LDM_PUSH 29           /* Tag for pushl in LDM TLS code */
#define R_386_TLS_LDM_CALL 30           /* Relocation for call to
                                           __tls_get_addr() in LDM code */
#define R_386_TLS_LDM_POP  31           /* Tag for popl in LDM TLS code */
#define R_386_TLS_LDO_32   32           /* Offset relative to TLS block */
#define R_386_TLS_IE_32    33           /* GOT entry for negated static TLS
                                           block offset */
#define R_386_TLS_LE_32    34           /* Negated offset relative to static
                                           TLS block */
#define R_386_TLS_DTPMOD32 35           /* ID of module containing symbol */
#define R_386_TLS_DTPOFF32 36           /* Offset in TLS block */
#define R_386_TLS_TPOFF32  37           /* Negated offset in static TLS block */
/* Keep this the last entry.  */
#define R_386_NUM          38

/* ARM specific declarations */

/* Processor specific flags for the ELF header e_flags field.  */
#define EF_ARM_RELEXEC     0x01
#define EF_ARM_HASENTRY    0x02
#define EF_ARM_INTERWORK   0x04
#define EF_ARM_APCS_26     0x08
#define EF_ARM_APCS_FLOAT  0x10
#define EF_ARM_PIC         0x20
#define EF_ARM_ALIGN8      0x40         /* 8-bit structure alignment is in use */
#define EF_ARM_NEW_ABI     0x80
#define EF_ARM_OLD_ABI     0x100

/* Other constants defined in the ARM ELF spec. version B-01.  */
/* NB. These conflict with values defined above.  */
#define EF_ARM_SYMSARESORTED    0x04
#define EF_ARM_DYNSYMSUSESEGIDX 0x08
#define EF_ARM_MAPSYMSFIRST     0x10
#define EF_ARM_EABIMASK         0XFF000000

#define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
#define EF_ARM_EABI_UNKNOWN  0x00000000
#define EF_ARM_EABI_VER1     0x01000000
#define EF_ARM_EABI_VER2     0x02000000

/* Additional symbol types for Thumb */
#define STT_ARM_TFUNC      0xd

/* ARM-specific values for sh_flags */
#define SHF_ARM_ENTRYSECT  0x10000000   /* Section contains an entry point */
#define SHF_ARM_COMDEF     0x80000000   /* Section may be multiply defined
                                           in the input to a link step */

/* ARM-specific program header flags */
#define PF_ARM_SB          0x10000000   /* Segment contains the location
                                           addressed by the static base */

/* ARM relocs.  */
#define R_ARM_NONE              0       /* No reloc */
#define R_ARM_PC24              1       /* PC relative 26 bit branch */
#define R_ARM_ABS32             2       /* Direct 32 bit  */
#define R_ARM_REL32             3       /* PC relative 32 bit */
#define R_ARM_PC13              4
#define R_ARM_ABS16             5       /* Direct 16 bit */
#define R_ARM_ABS12             6       /* Direct 12 bit */
#define R_ARM_THM_ABS5          7
#define R_ARM_ABS8              8       /* Direct 8 bit */
#define R_ARM_SBREL32           9
#define R_ARM_THM_PC22          10
#define R_ARM_THM_PC8           11
#define R_ARM_AMP_VCALL9        12
#define R_ARM_SWI24             13
#define R_ARM_THM_SWI8          14
#define R_ARM_XPC25             15
#define R_ARM_THM_XPC22         16
#define R_ARM_COPY              20      /* Copy symbol at runtime */
#define R_ARM_GLOB_DAT          21      /* Create GOT entry */
#define R_ARM_JUMP_SLOT         22      /* Create PLT entry */
#define R_ARM_RELATIVE          23      /* Adjust by program base */
#define R_ARM_GOTOFF            24      /* 32 bit offset to GOT */
#define R_ARM_GOTPC             25      /* 32 bit PC relative offset to GOT */
#define R_ARM_GOT32             26      /* 32 bit GOT entry */
#define R_ARM_PLT32             27      /* 32 bit PLT address */
#define R_ARM_ALU_PCREL_7_0     32
#define R_ARM_ALU_PCREL_15_8    33
#define R_ARM_ALU_PCREL_23_15   34
#define R_ARM_LDR_SBREL_11_0    35
#define R_ARM_ALU_SBREL_19_12   36
#define R_ARM_ALU_SBREL_27_20   37
#define R_ARM_GNU_VTENTRY       100
#define R_ARM_GNU_VTINHERIT     101
#define R_ARM_THM_PC11          102     /* thumb unconditional branch */
#define R_ARM_THM_PC9           103     /* thumb conditional branch */
#define R_ARM_RXPC25            249
#define R_ARM_RSBREL32          250
#define R_ARM_THM_RPC22         251
#define R_ARM_RREL32            252
#define R_ARM_RABS22            253
#define R_ARM_RPC24             254
#define R_ARM_RBASE             255
/* Keep this the last entry.  */
#define R_ARM_NUM               256

/* AMD x86-64 relocations.  */
#define R_X86_64_NONE           0       /* No reloc */
#define R_X86_64_64             1       /* Direct 64 bit  */
#define R_X86_64_PC32           2       /* PC relative 32 bit signed */
#define R_X86_64_GOT32          3       /* 32 bit GOT entry */
#define R_X86_64_PLT32          4       /* 32 bit PLT address */
#define R_X86_64_COPY           5       /* Copy symbol at runtime */
#define R_X86_64_GLOB_DAT       6       /* Create GOT entry */
#define R_X86_64_JUMP_SLOT      7       /* Create PLT entry */
#define R_X86_64_RELATIVE       8       /* Adjust by program base */
#define R_X86_64_GOTPCREL       9       /* 32 bit signed PC relative
                                           offset to GOT */
#define R_X86_64_32             10      /* Direct 32 bit zero extended */
#define R_X86_64_32S            11      /* Direct 32 bit sign extended */
#define R_X86_64_16             12      /* Direct 16 bit zero extended */
#define R_X86_64_PC16           13      /* 16 bit sign extended pc relative */
#define R_X86_64_8              14      /* Direct 8 bit sign extended  */
#define R_X86_64_PC8            15      /* 8 bit sign extended pc relative */
#define R_X86_64_DTPMOD64       16      /* ID of module containing symbol */
#define R_X86_64_DTPOFF64       17      /* Offset in module's TLS block */
#define R_X86_64_TPOFF64        18      /* Offset in initial TLS block */
#define R_X86_64_TLSGD          19      /* 32 bit signed PC relative offset
                                           to two GOT entries for GD symbol */
#define R_X86_64_TLSLD          20      /* 32 bit signed PC relative offset
                                           to two GOT entries for LD symbol */
#define R_X86_64_DTPOFF32       21      /* Offset in TLS block */
#define R_X86_64_GOTTPOFF       22      /* 32 bit signed PC relative offset
                                           to GOT entry for IE symbol */
#define R_X86_64_TPOFF32        23      /* Offset in initial TLS block */

#define R_X86_64_NUM            24

/* Symbol Table Entry - page 1-17, figure 1-16 */

#define STN_UNDEF       0

typedef struct {
    Elf32_Word          st_name;        
    Elf32_Addr          st_value;       
    Elf32_Word          st_size;        
    unsigned char       st_info;        
    unsigned char       st_other;       
    Elf32_Half          st_shndx;       
} Elf32_Sym;

typedef struct {
    Elf64_Word          st_name;        
    unsigned char       st_info;        
    unsigned char       st_other;       
    Elf64_Half          st_shndx;       
    Elf64_Addr          st_value;       
    Elf64_Xword         st_size;        
} Elf64_Sym;

#define ELF32_ST_BIND(i)    ((i)>>4)
#define ELF32_ST_TYPE(i)    ((i)&0xf)
#define ELF32_ST_INFO(b,t)  (((b)<<4)+((t)&0xf))

#define ELF64_ST_BIND(i)    ((i)>>4)
#define ELF64_ST_TYPE(i)    ((i)&0xf)
#define ELF64_ST_INFO(b,t)  (((b)<<4)+((t)&0xf))

/* Symbol Binding - page 1-18, figure 1-17 */

#define STB_LOCAL       0       
#define STB_GLOBAL      1       
#define STB_WEAK        2       
#define STB_LOOS        10      
#define STB_HIOS        12      
#define STB_LOPROC      13      
#define STB_HIPROC      15      
/* Symbol Types - page 1-19, figure 1-18 */

#define STT_NOTYPE      0       
#define STT_OBJECT      1       
#define STT_FUNC        2       
#define STT_SECTION     3       
#define STT_FILE        4       
#define STT_LOOS        10      
#define STT_HIOS        12      
#define STT_LOPROC      13      
#define STT_HIPROC      15      
/* Some helpers */
static inline int l4util_elf_check_magic(ElfW(Ehdr) *hdr);
static inline int l4util_elf_check_arch(ElfW(Ehdr) *hdr);
static inline ElfW(Phdr) *l4util_elf_phdr(ElfW(Ehdr) *hdr);


/* Implemeantions */
static inline
int l4util_elf_check_magic(ElfW(Ehdr) *hdr)
{
  return    hdr->e_ident[EI_MAG0] == ELFMAG0
         && hdr->e_ident[EI_MAG1] == ELFMAG1
         && hdr->e_ident[EI_MAG2] == ELFMAG2
         && hdr->e_ident[EI_MAG3] == ELFMAG3;
}

static inline
int l4util_elf_check_arch(ElfW(Ehdr) *hdr)
{
  return    hdr->e_ident[EI_CLASS] == L4_ARCH_EI_CLASS
         && hdr->e_ident[EI_DATA]  == L4_ARCH_EI_DATA
         && hdr->e_machine         == L4_ARCH_E_MACHINE;
}

static inline
ElfW(Phdr) *l4util_elf_phdr(ElfW(Ehdr) *hdr)
{
  return (ElfW(Phdr) *)((char *)hdr + hdr->e_phoff);
}

#endif /* _L4_EXEC_ELF_H */

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