elf.h

tcc

   a header of a fixed form.  */

typedef struct
{
  Elf32_Word n_namesz;			/* Length of the note's name.  */
  Elf32_Word n_descsz;			/* Length of the note's descriptor.  */
  Elf32_Word n_type;			/* Type of the note.  */
} Elf32_Nhdr;

typedef struct
{
  Elf64_Word n_namesz;			/* Length of the note's name.  */
  Elf64_Word n_descsz;			/* Length of the note's descriptor.  */
  Elf64_Word n_type;			/* Type of the note.  */
} Elf64_Nhdr;

/* Known names of notes.  */

/* Solaris entries in the note section have this name.  */
#define ELF_NOTE_SOLARIS	"SUNW Solaris"

/* Note entries for GNU systems have this name.  */
#define ELF_NOTE_GNU		"GNU"


/* Defined types of notes for Solaris.  */

/* Value of descriptor (one word) is desired pagesize for the binary.  */
#define ELF_NOTE_PAGESIZE_HINT	1


/* Defined note types for GNU systems.  */

/* ABI information.  The descriptor consists of words:
   word 0: OS descriptor
   word 1: major version of the ABI
   word 2: minor version of the ABI
   word 3: subminor version of the ABI
*/
#define ELF_NOTE_ABI		1

/* Known OSes.  These value can appear in word 0 of an ELF_NOTE_ABI
   note section entry.  */
#define ELF_NOTE_OS_LINUX	0
#define ELF_NOTE_OS_GNU		1
#define ELF_NOTE_OS_SOLARIS2	2


/* Motorola 68k specific definitions.  */

/* m68k relocs.  */

#define R_68K_NONE	0		/* No reloc */
#define R_68K_32	1		/* Direct 32 bit  */
#define R_68K_16	2		/* Direct 16 bit  */
#define R_68K_8		3		/* Direct 8 bit  */
#define R_68K_PC32	4		/* PC relative 32 bit */
#define R_68K_PC16	5		/* PC relative 16 bit */
#define R_68K_PC8	6		/* PC relative 8 bit */
#define R_68K_GOT32	7		/* 32 bit PC relative GOT entry */
#define R_68K_GOT16	8		/* 16 bit PC relative GOT entry */
#define R_68K_GOT8	9		/* 8 bit PC relative GOT entry */
#define R_68K_GOT32O	10		/* 32 bit GOT offset */
#define R_68K_GOT16O	11		/* 16 bit GOT offset */
#define R_68K_GOT8O	12		/* 8 bit GOT offset */
#define R_68K_PLT32	13		/* 32 bit PC relative PLT address */
#define R_68K_PLT16	14		/* 16 bit PC relative PLT address */
#define R_68K_PLT8	15		/* 8 bit PC relative PLT address */
#define R_68K_PLT32O	16		/* 32 bit PLT offset */
#define R_68K_PLT16O	17		/* 16 bit PLT offset */
#define R_68K_PLT8O	18		/* 8 bit PLT offset */
#define R_68K_COPY	19		/* Copy symbol at runtime */
#define R_68K_GLOB_DAT	20		/* Create GOT entry */
#define R_68K_JMP_SLOT	21		/* Create PLT entry */
#define R_68K_RELATIVE	22		/* Adjust by program base */
/* Keep this the last entry.  */
#define R_68K_NUM	23

/* Intel 80386 specific definitions.  */

/* i386 relocs.  */

#define R_386_NONE	0		/* No reloc */
#define R_386_32	1		/* Direct 32 bit  */
#define R_386_PC32	2		/* PC relative 32 bit */
#define R_386_GOT32	3		/* 32 bit GOT entry */
#define R_386_PLT32	4		/* 32 bit PLT address */
#define R_386_COPY	5		/* Copy symbol at runtime */
#define R_386_GLOB_DAT	6		/* Create GOT entry */
#define R_386_JMP_SLOT	7		/* Create PLT entry */
#define R_386_RELATIVE	8		/* Adjust by program base */
#define R_386_GOTOFF	9		/* 32 bit offset to GOT */
#define R_386_GOTPC	10		/* 32 bit PC relative offset to GOT */
/* Keep this the last entry.  */
#define R_386_NUM	11

/* SUN SPARC specific definitions.  */

/* Values for Elf64_Ehdr.e_flags.  */

#define EF_SPARCV9_MM		3
#define EF_SPARCV9_TSO		0
#define EF_SPARCV9_PSO		1
#define EF_SPARCV9_RMO		2
#define EF_SPARC_EXT_MASK	0xFFFF00
#define EF_SPARC_SUN_US1	0x000200
#define EF_SPARC_HAL_R1		0x000400

/* SPARC relocs.  */

#define R_SPARC_NONE	0		/* No reloc */
#define R_SPARC_8	1		/* Direct 8 bit */
#define R_SPARC_16	2		/* Direct 16 bit */
#define R_SPARC_32	3		/* Direct 32 bit */
#define R_SPARC_DISP8	4		/* PC relative 8 bit */
#define R_SPARC_DISP16	5		/* PC relative 16 bit */
#define R_SPARC_DISP32	6		/* PC relative 32 bit */
#define R_SPARC_WDISP30	7		/* PC relative 30 bit shifted */
#define R_SPARC_WDISP22	8		/* PC relative 22 bit shifted */
#define R_SPARC_HI22	9		/* High 22 bit */
#define R_SPARC_22	10		/* Direct 22 bit */
#define R_SPARC_13	11		/* Direct 13 bit */
#define R_SPARC_LO10	12		/* Truncated 10 bit */
#define R_SPARC_GOT10	13		/* Truncated 10 bit GOT entry */
#define R_SPARC_GOT13	14		/* 13 bit GOT entry */
#define R_SPARC_GOT22	15		/* 22 bit GOT entry shifted */
#define R_SPARC_PC10	16		/* PC relative 10 bit truncated */
#define R_SPARC_PC22	17		/* PC relative 22 bit shifted */
#define R_SPARC_WPLT30	18		/* 30 bit PC relative PLT address */
#define R_SPARC_COPY	19		/* Copy symbol at runtime */
#define R_SPARC_GLOB_DAT 20		/* Create GOT entry */
#define R_SPARC_JMP_SLOT 21		/* Create PLT entry */
#define R_SPARC_RELATIVE 22		/* Adjust by program base */
#define R_SPARC_UA32	23		/* Direct 32 bit unaligned */

/* Additional Sparc64 relocs.  */

#define R_SPARC_PLT32	24		/* Direct 32 bit ref to PLT entry */
#define R_SPARC_HIPLT22	25		/* High 22 bit PLT entry */
#define R_SPARC_LOPLT10	26		/* Truncated 10 bit PLT entry */
#define R_SPARC_PCPLT32	27		/* PC rel 32 bit ref to PLT entry */
#define R_SPARC_PCPLT22	28		/* PC rel high 22 bit PLT entry */
#define R_SPARC_PCPLT10	29		/* PC rel trunc 10 bit PLT entry */
#define R_SPARC_10	30		/* Direct 10 bit */
#define R_SPARC_11	31		/* Direct 11 bit */
#define R_SPARC_64	32		/* Direct 64 bit */
#define R_SPARC_OLO10	33		/* ?? */
#define R_SPARC_HH22	34		/* Top 22 bits of direct 64 bit */
#define R_SPARC_HM10	35		/* High middle 10 bits of ... */
#define R_SPARC_LM22	36		/* Low middle 22 bits of ... */
#define R_SPARC_PC_HH22	37		/* Top 22 bits of pc rel 64 bit */
#define R_SPARC_PC_HM10	38		/* High middle 10 bit of ... */
#define R_SPARC_PC_LM22	39		/* Low miggle 22 bits of ... */
#define R_SPARC_WDISP16	40		/* PC relative 16 bit shifted */
#define R_SPARC_WDISP19	41		/* PC relative 19 bit shifted */
#define R_SPARC_7	43		/* Direct 7 bit */
#define R_SPARC_5	44		/* Direct 5 bit */
#define R_SPARC_6	45		/* Direct 6 bit */
#define R_SPARC_DISP64	46		/* PC relative 64 bit */
#define R_SPARC_PLT64	47		/* Direct 64 bit ref to PLT entry */
#define R_SPARC_HIX22	48		/* High 22 bit complemented */
#define R_SPARC_LOX10	49		/* Truncated 11 bit complemented */
#define R_SPARC_H44	50		/* Direct high 12 of 44 bit */
#define R_SPARC_M44	51		/* Direct mid 22 of 44 bit */
#define R_SPARC_L44	52		/* Direct low 10 of 44 bit */
#define R_SPARC_REGISTER 53		/* Global register usage */
#define R_SPARC_UA64	54		/* Direct 64 bit unaligned */
#define R_SPARC_UA16	55		/* Direct 16 bit unaligned */
/* Keep this the last entry.  */
#define R_SPARC_NUM	56

/* For Sparc64, legal values for d_tag of Elf64_Dyn.  */

#define DT_SPARC_REGISTER 0x70000001
#define DT_SPARC_NUM	2

/* Bits present in AT_HWCAP, primarily for Sparc32.  */

#define HWCAP_SPARC_FLUSH	1	/* The cpu supports flush insn.  */
#define HWCAP_SPARC_STBAR	2
#define HWCAP_SPARC_SWAP	4
#define HWCAP_SPARC_MULDIV	8
#define HWCAP_SPARC_V9		16	/* The cpu is v9, so v8plus is ok.  */

/* MIPS R3000 specific definitions.  */

/* Legal values for e_flags field of Elf32_Ehdr.  */

#define EF_MIPS_NOREORDER   1		/* A .noreorder directive was used */
#define EF_MIPS_PIC	    2		/* Contains PIC code */
#define EF_MIPS_CPIC	    4		/* Uses PIC calling sequence */
#define EF_MIPS_XGOT	    8
#define EF_MIPS_64BIT_WHIRL 16
#define EF_MIPS_ABI2	    32
#define EF_MIPS_ABI_ON32    64
#define EF_MIPS_ARCH	    0xf0000000	/* MIPS architecture level */

/* Legal values for MIPS architecture level.  */

#define EF_MIPS_ARCH_1	    0x00000000	/* -mips1 code.  */
#define EF_MIPS_ARCH_2	    0x10000000	/* -mips2 code.  */
#define EF_MIPS_ARCH_3	    0x20000000	/* -mips3 code.  */
#define EF_MIPS_ARCH_4	    0x30000000	/* -mips4 code.  */
#define EF_MIPS_ARCH_5	    0x40000000	/* -mips5 code.  */

/* The following are non-official names and should not be used.  */

#define E_MIPS_ARCH_1	  0x00000000	/* -mips1 code.  */
#define E_MIPS_ARCH_2	  0x10000000	/* -mips2 code.  */
#define E_MIPS_ARCH_3	  0x20000000	/* -mips3 code.  */
#define E_MIPS_ARCH_4	  0x30000000	/* -mips4 code.  */
#define E_MIPS_ARCH_5	  0x40000000	/* -mips5 code.  */

/* Special section indices.  */

#define SHN_MIPS_ACOMMON 0xff00		/* Allocated common symbols */
#define SHN_MIPS_TEXT	 0xff01		/* Allocated test symbols.  */
#define SHN_MIPS_DATA	 0xff02		/* Allocated data symbols.  */
#define SHN_MIPS_SCOMMON 0xff03		/* Small common symbols */
#define SHN_MIPS_SUNDEFINED 0xff04	/* Small undefined symbols */

/* Legal values for sh_type field of Elf32_Shdr.  */

#define SHT_MIPS_LIBLIST       0x70000000 /* Shared objects used in link */
#define SHT_MIPS_MSYM	       0x70000001
#define SHT_MIPS_CONFLICT      0x70000002 /* Conflicting symbols */
#define SHT_MIPS_GPTAB	       0x70000003 /* Global data area sizes */
#define SHT_MIPS_UCODE	       0x70000004 /* Reserved for SGI/MIPS compilers */
#define SHT_MIPS_DEBUG	       0x70000005 /* MIPS ECOFF debugging information*/
#define SHT_MIPS_REGINFO       0x70000006 /* Register usage information */
#define SHT_MIPS_PACKAGE       0x70000007
#define SHT_MIPS_PACKSYM       0x70000008
#define SHT_MIPS_RELD	       0x70000009
#define SHT_MIPS_IFACE         0x7000000b
#define SHT_MIPS_CONTENT       0x7000000c
#define SHT_MIPS_OPTIONS       0x7000000d /* Miscellaneous options.  */
#define SHT_MIPS_SHDR	       0x70000010
#define SHT_MIPS_FDESC	       0x70000011
#define SHT_MIPS_EXTSYM	       0x70000012
#define SHT_MIPS_DENSE	       0x70000013
#define SHT_MIPS_PDESC	       0x70000014
#define SHT_MIPS_LOCSYM	       0x70000015
#define SHT_MIPS_AUXSYM	       0x70000016
#define SHT_MIPS_OPTSYM	       0x70000017
#define SHT_MIPS_LOCSTR	       0x70000018
#define SHT_MIPS_LINE	       0x70000019
#define SHT_MIPS_RFDESC	       0x7000001a
#define SHT_MIPS_DELTASYM      0x7000001b
#define SHT_MIPS_DELTAINST     0x7000001c
#define SHT_MIPS_DELTACLASS    0x7000001d
#define SHT_MIPS_DWARF         0x7000001e /* DWARF debugging information.  */
#define SHT_MIPS_DELTADECL     0x7000001f
#define SHT_MIPS_SYMBOL_LIB    0x70000020
#define SHT_MIPS_EVENTS	       0x70000021 /* Event section.  */
#define SHT_MIPS_TRANSLATE     0x70000022
#define SHT_MIPS_PIXIE	       0x70000023
#define SHT_MIPS_XLATE	       0x70000024
#define SHT_MIPS_XLATE_DEBUG   0x70000025
#define SHT_MIPS_WHIRL	       0x70000026
#define SHT_MIPS_EH_REGION     0x70000027
#define SHT_MIPS_XLATE_OLD     0x70000028
#define SHT_MIPS_PDR_EXCEPTION 0x70000029

/* Legal values for sh_flags field of Elf32_Shdr.  */

#define SHF_MIPS_GPREL	 0x10000000	/* Must be part of global data area */
#define SHF_MIPS_MERGE	 0x20000000
#define SHF_MIPS_ADDR	 0x40000000
#define SHF_MIPS_STRINGS 0x80000000
#define SHF_MIPS_NOSTRIP 0x08000000
#define SHF_MIPS_LOCAL	 0x04000000
#define SHF_MIPS_NAMES	 0x02000000
#define SHF_MIPS_NODUPE	 0x01000000


/* Symbol tables.  */

/* MIPS specific values for `st_other'.  */
#define STO_MIPS_DEFAULT		0x0
#define STO_MIPS_INTERNAL		0x1
#define STO_MIPS_HIDDEN			0x2
#define STO_MIPS_PROTECTED		0x3
#define STO_MIPS_SC_ALIGN_UNUSED	0xff

/* MIPS specific values for `st_info'.  */
#define STB_MIPS_SPLIT_COMMON		13

/* Entries found in sections of type SHT_MIPS_GPTAB.  */

typedef union
{
  struct
    {
      Elf32_Word gt_current_g_value;	/* -G value used for compilation */
      Elf32_Word gt_unused;		/* Not used */
    } gt_header;			/* First entry in section */
  struct
    {
      Elf32_Word gt_g_value;		/* If this value were used for -G */
      Elf32_Word gt_bytes;		/* This many bytes would be used */
    } gt_entry;				/* Subsequent entries in section */
} Elf32_gptab;

/* Entry found in sections of type SHT_MIPS_REGINFO.  */

typedef struct
{
  Elf32_Word	ri_gprmask;		/* General registers used */
  Elf32_Word	ri_cprmask[4];		/* Coprocessor registers used */
  Elf32_Sword	ri_gp_value;		/* $gp register value */
} Elf32_RegInfo;

/* Entries found in sections of type SHT_MIPS_OPTIONS.  */

typedef struct
{
  unsigned char kind;		/* Determines interpretation of the
				   variable part of descriptor.  */
  unsigned char size;		/* Size of descriptor, including header.  */
  Elf32_Section section;	/* Section header index of section affected,
				   0 for global options.  */
  Elf32_Word info;		/* Kind-specific information.  */
} Elf_Options;

/* Values for `kind' field in Elf_Options.  */

#define ODK_NULL	0	/* Undefined.  */
#define ODK_REGINFO	1	/* Register usage information.  */
#define ODK_EXCEPTIONS	2	/* Exception processing options.  */
#define ODK_PAD		3	/* Section padding options.  */
#define ODK_HWPATCH	4	/* Hardware workarounds performed */
#define ODK_FILL	5	/* record the fill value used by the linker. */
#define ODK_TAGS	6	/* reserve space for desktop tools to write. */
#define ODK_HWAND	7	/* HW workarounds.  'AND' bits when merging. */
#define ODK_HWOR	8	/* HW workarounds.  'OR' bits when merging.  */

/* Values for `info' in Elf_Options for ODK_EXCEPTIONS entries.  */

#define OEX_FPU_MIN	0x1f	/* FPE's which MUST be enabled.  */
#define OEX_FPU_MAX	0x1f00	/* FPE's which MAY be enabled.  */
#define OEX_PAGE0	0x10000	/* page zero must be mapped.  */
#define OEX_SMM		0x20000	/* Force sequential memory mode?  */
#define OEX_FPDBUG	0x40000	/* Force floating point debug mode?  */
#define OEX_PRECISEFP	OEX_FPDBUG
#define OEX_DISMISS	0x80000	/* Dismiss invalid address faults?  */

#define OEX_FPU_INVAL	0x10
#define OEX_FPU_DIV0	0x08
#define OEX_FPU_OFLO	0x04
#define OEX_FPU_UFLO	0x02
#define OEX_FPU_INEX	0x01

/* Masks for `info' in Elf_Options for an ODK_HWPATCH entry.  */

#define OHW_R4KEOP	0x1	/* R4000 end-of-page patch.  */
#define OHW_R8KPFETCH	0x2	/* may need R8000 prefetch patch.  */
#define OHW_R5KEOP	0x4	/* R5000 end-of-page patch.  */
#define OHW_R5KCVTL	0x8	/* R5000 cvt.[ds].l bug.  clean=1.  */

#define OPAD_PREFIX	0x1
#define OPAD_POSTFIX	0x2
#define OPAD_SYMBOL	0x4

/* Entry found in `.options' section.  */

typedef struct
{
  Elf32_Word hwp_flags1;	/* Extra flags.  */
  Elf32_Word hwp_flags2;	/* Extra flags.  */
} Elf_Options_Hw;

/* Masks for `info' in ElfOptions for ODK_HWAND and ODK_HWOR entries.  */

#define OHWA0_R4KEOP_CHECKED	0x00000001
#define OHWA1_R4KEOP_CLEAN	0x00000002

/* MIPS relocs.  */

#define R_MIPS_NONE		0	/* No reloc */
#define R_MIPS_16		1	/* Direct 16 bit */
#define R_MIPS_32		2	/* Direct 32 bit */
#define R_MIPS_REL32		3	/* PC relative 32 bit */
#define R_MIPS_26		4	/* Direct 26 bit shifted */
#define R_MIPS_HI16		5	/* High 16 bit */
#define R_MIPS_LO16		6	/* Low 16 bit */
#define R_MIPS_GPREL16		7	/* GP relative 16 bit */
#define R_MIPS_LITERAL		8	/* 16 bit literal entry */
#define R_MIPS_GOT16		9	/* 16 bit GOT entry */
#define R_MIPS_PC16		10	/* PC relative 16 bit */
#define R_MIPS_CALL16		11	/* 16 bit GOT entry for function */
#define R_MIPS_GPREL32		12	/* GP relative 32 bit */

#define R_MIPS_SHIFT5		16
#define R_MIPS_SHIFT6		17
#define R_MIPS_64		18
#define R_MIPS_GOT_DISP		19
#define R_MIPS_GOT_PAGE		20
#define R_MIPS_GOT_OFST		21
#define R_MIPS_GOT_HI16		22