454 lines
14 KiB
C
454 lines
14 KiB
C
/* a.out.h
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _A_OUT_H_
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#define _A_OUT_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#define COFF_IMAGE_WITH_PE
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#define COFF_LONG_SECTION_NAMES
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/*** coff information for Intel 386/486 and AMD64. */
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/********************** FILE HEADER **********************/
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struct external_filehdr {
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uint16_t f_magic; /* magic number */
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uint16_t f_nscns; /* number of sections */
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uint32_t f_timdat; /* time & date stamp */
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uint32_t f_symptr; /* file pointer to symtab */
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uint32_t f_nsyms; /* number of symtab entries */
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uint16_t f_opthdr; /* sizeof(optional hdr) */
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uint16_t f_flags; /* flags */
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};
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/* Bits for f_flags:
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* F_RELFLG relocation info stripped from file
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* F_EXEC file is executable (no unresolved external references)
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* F_LNNO line numbers stripped from file
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* F_LSYMS local symbols stripped from file
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* F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
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*/
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#define F_RELFLG (0x0001)
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#define F_EXEC (0x0002)
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#define F_LNNO (0x0004)
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#define F_LSYMS (0x0008)
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#define I386MAGIC 0x14c
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#define I386PTXMAGIC 0x154
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#define I386AIXMAGIC 0x175
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#define AMD64MAGIC 0x8664
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/* This is Lynx's all-platform magic number for executables. */
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#define LYNXCOFFMAGIC 0415
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#define I386BADMAG(x) (((x).f_magic != I386MAGIC) \
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&& (x).f_magic != I386AIXMAGIC \
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&& (x).f_magic != I386PTXMAGIC \
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&& (x).f_magic != LYNXCOFFMAGIC)
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#define FILHDR struct external_filehdr
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#define FILHSZ 20
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/********************** AOUT "OPTIONAL HEADER"=
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**********************/
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typedef struct
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{
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uint16_t magic; /* type of file */
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uint16_t vstamp; /* version stamp */
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uint32_t tsize; /* text size in bytes, padded to FW bdry*/
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uint32_t dsize; /* initialized data " " */
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uint32_t bsize; /* uninitialized data " " */
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uint32_t entry; /* entry pt. */
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uint32_t text_start; /* base of text used for this file */
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uint32_t data_start; /* base of data used for this file=
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*/
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}
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AOUTHDR;
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#define AOUTSZ 28
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#define AOUTHDRSZ 28
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#define OMAGIC 0404 /* object files, eg as output */
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#define ZMAGIC 0413 /* demand load format, eg normal ld output */
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#define STMAGIC 0401 /* target shlib */
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#define SHMAGIC 0443 /* host shlib */
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/* define some NT default values */
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/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
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#define NT_SECTION_ALIGNMENT 0x1000
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#define NT_FILE_ALIGNMENT 0x200
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#define NT_DEF_RESERVE 0x100000
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#define NT_DEF_COMMIT 0x1000
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/********************** SECTION HEADER **********************/
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struct external_scnhdr {
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char s_name[8]; /* section name */
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uint32_t s_paddr; /* physical address, offset
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of last addr in scn */
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uint32_t s_vaddr; /* virtual address */
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uint32_t s_size; /* section size */
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uint32_t s_scnptr; /* file ptr to raw data for section */
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uint32_t s_relptr; /* file ptr to relocation */
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uint32_t s_lnnoptr; /* file ptr to line numbers */
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uint16_t s_nreloc; /* number of relocation entries */
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uint16_t s_nlnno; /* number of line number entries*/
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uint32_t s_flags; /* flags */
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};
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#define SCNHDR struct external_scnhdr
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#define SCNHSZ 40
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/*
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* names of "special" sections
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*/
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#define _TEXT ".text"
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#define _DATA ".data"
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#define _BSS ".bss"
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#define _COMMENT ".comment"
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#define _LIB ".lib"
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/********************** LINE NUMBERS **********************/
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/* 1 line number entry for every "breakpointable" source line in a section.
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* Line numbers are grouped on a per function basis; first entry in a function
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* grouping will have l_lnno = 0 and in place of physical address will be the
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* symbol table index of the function name.
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*/
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struct external_lineno {
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union {
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uint32_t l_symndx; /* function name symbol index, iff l_lnno 0 */
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uint32_t l_paddr; /* (physical) address of line number */
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} l_addr;
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uint16_t l_lnno; /* line number */
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};
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#define LINENO struct external_lineno
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#define LINESZ 6
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/********************** SYMBOLS **********************/
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#define E_SYMNMLEN 8 /* # characters in a symbol name */
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#define E_FILNMLEN 14 /* # characters in a file name */
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#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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union {
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char e_name[E_SYMNMLEN];
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struct {
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uint32_t e_zeroes;
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uint32_t e_offset;
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} e;
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} e;
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uint32_t e_value;
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uint16_t e_scnum;
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uint16_t e_type;
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char e_sclass[1];
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char e_numaux[1];
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};
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#define N_BTMASK (0xf)
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#define N_TMASK (0x30)
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#define N_BTSHFT (4)
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#define N_TSHIFT (2)
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union external_auxent {
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struct {
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uint32_t x_tagndx; /* str, un, or enum tag indx */
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union {
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struct {
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uint16_t x_lnno; /* declaration line number */
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uint16_t x_size; /* str/union/array size */
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} x_lnsz;
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uint32_t x_fsize; /* size of function */
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} x_misc;
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union {
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struct { /* if ISFCN, tag, or .bb */
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uint32_t x_lnnoptr; /* ptr to fcn line # */
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uint32_t x_endndx; /* entry ndx past block end */
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} x_fcn;
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struct { /* if ISARY, up to 4 dimen. */
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char x_dimen[E_DIMNUM][2];
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} x_ary;
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} x_fcnary;
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uint16_t x_tvndx; /* tv index */
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} x_sym;
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union {
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char x_fname[E_FILNMLEN];
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struct {
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uint32_t x_zeroes;
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uint32_t x_offset;
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} x_n;
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} x_file;
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struct {
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uint32_t x_scnlen; /* section length */
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uint16_t x_nreloc; /* # relocation entries */
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uint16_t x_nlinno; /* # line numbers */
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uint32_t x_checksum; /* section COMDAT checksum */
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uint16_t x_associated; /* COMDAT associated section index */
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char x_comdat[1]; /* COMDAT selection number */
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} x_scn;
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struct {
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uint32_t x_tvfill; /* tv fill value */
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uint16_t x_tvlen; /* length of .tv */
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char x_tvran[2][2]; /* tv range */
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} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
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};
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#define SYMENT struct external_syment
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#define SYMESZ 18
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#define AUXENT union external_auxent
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#define AUXESZ 18
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#define _ETEXT "etext"
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/********************** RELOCATION DIRECTIVES **********************/
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struct external_reloc {
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char r_vaddr[4];
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char r_symndx[4];
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char r_type[2];
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};
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#define RELOC struct external_reloc
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#define RELSZ 10
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/* end of coff/i386.h */
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/* PE COFF header information */
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#ifndef _PE_H
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#define _PE_H
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#define IMAGE_FILE_MACHINE_I386 0x014c
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#define IMAGE_FILE_MACHINE_AMD64 0x8664
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#define IMAGE_NT_OPTIONAL_HDR32_MAGIC 0x10b
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#define IMAGE_NT_OPTIONAL_HDR64_MAGIC 0x20b
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#define IMAGE_SIZEOF_STD_OPTIONAL_HEADER 28
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#define IMAGE_SIZEOF_NT_OPTIONAL32_HEADER 224
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#define IMAGE_SIZEOF_NT_OPTIONAL64_HEADER 240
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#define IMAGE_SUBSYSTEM_NATIVE 1
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#define IMAGE_SUBSYSTEM_WINDOWS_GUI 2
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#define IMAGE_SUBSYSTEM_WINDOWS_CUI 3
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/* NT specific file attributes */
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#define IMAGE_FILE_RELOCS_STRIPPED 0x0001
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#define IMAGE_FILE_EXECUTABLE_IMAGE 0x0002
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#define IMAGE_FILE_LINE_NUMS_STRIPPED 0x0004
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#define IMAGE_FILE_LOCAL_SYMS_STRIPPED 0x0008
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#define IMAGE_FILE_BYTES_REVERSED_LO 0x0080
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#define IMAGE_FILE_32BIT_MACHINE 0x0100
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#define IMAGE_FILE_DEBUG_STRIPPED 0x0200
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#define IMAGE_FILE_SYSTEM 0x1000
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#define IMAGE_FILE_DLL 0x2000
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#define IMAGE_FILE_BYTES_REVERSED_HI 0x8000
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/* additional flags to be set for section headers to allow the NT loader to
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read and write to the section data (to replace the addresses of data in
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dlls for one thing); also to execute the section in .text's case=
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*/
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#define IMAGE_SCN_MEM_DISCARDABLE 0x02000000
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#define IMAGE_SCN_MEM_EXECUTE 0x20000000
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#define IMAGE_SCN_MEM_READ 0x40000000
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#define IMAGE_SCN_MEM_WRITE 0x80000000
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/*
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* Section characteristics added for ppc-nt
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*/
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#define IMAGE_SCN_TYPE_NO_PAD 0x00000008 /* Reserved. */
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#define IMAGE_SCN_CNT_CODE 0x00000020 /* Section contains code. */
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#define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 /* Section contains initialized data. */
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#define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 /* Section contains uninitialized data. */
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#define IMAGE_SCN_LNK_OTHER 0x00000100 /* Reserved. */
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#define IMAGE_SCN_LNK_INFO 0x00000200 /* Section contains comments or some other type of information. */
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#define IMAGE_SCN_LNK_REMOVE 0x00000800 /* Section contents will not become part of image. */
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#define IMAGE_SCN_LNK_COMDAT 0x00001000 /* Section contents comdat. */
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#define IMAGE_SCN_MEM_FARDATA 0x00008000
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#define IMAGE_SCN_MEM_PURGEABLE 0x00020000
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#define IMAGE_SCN_MEM_16BIT 0x00020000
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#define IMAGE_SCN_MEM_LOCKED 0x00040000
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#define IMAGE_SCN_MEM_PRELOAD 0x00080000
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#define IMAGE_SCN_ALIGN_1BYTES 0x00100000
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#define IMAGE_SCN_ALIGN_2BYTES 0x00200000
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#define IMAGE_SCN_ALIGN_4BYTES 0x00300000
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#define IMAGE_SCN_ALIGN_8BYTES 0x00400000
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#define IMAGE_SCN_ALIGN_16BYTES 0x00500000 /* Default alignment if no others are specified. */
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#define IMAGE_SCN_ALIGN_32BYTES 0x00600000
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#define IMAGE_SCN_ALIGN_64BYTES 0x00700000
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#define IMAGE_SCN_LNK_NRELOC_OVFL 0x01000000 /* Section contains extended relocations. */
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#define IMAGE_SCN_MEM_NOT_CACHED 0x04000000 /* Section is not cachable. */
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#define IMAGE_SCN_MEM_NOT_PAGED 0x08000000 /* Section is not pageable. */
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#define IMAGE_SCN_MEM_SHARED 0x10000000 /* Section is shareable. */
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/* COMDAT selection codes. */
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#define IMAGE_COMDAT_SELECT_NODUPLICATES (1) /* Warn if duplicates. */
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#define IMAGE_COMDAT_SELECT_ANY (2) /* No warning. */
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#define IMAGE_COMDAT_SELECT_SAME_SIZE (3) /* Warn if different size. */
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#define IMAGE_COMDAT_SELECT_EXACT_MATCH (4) /* Warn if different. */
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#define IMAGE_COMDAT_SELECT_ASSOCIATIVE (5) /* Base on other section. */
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/* Magic values that are true for all dos/nt implementations */
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#define DOSMAGIC 0x5a4d
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#define NT_SIGNATURE 0x00004550
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/* NT allows long filenames, we want to accommodate this. This may break
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some of the bfd functions */
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#undef FILNMLEN
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#define FILNMLEN 18 /* # characters in a file name */
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#ifdef COFF_IMAGE_WITH_PE
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/* The filehdr is only weird in images */
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#undef FILHDR
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struct external_PE_filehdr
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{
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/* DOS header fields */
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uint16_t e_magic; /* Magic number, 0x5a4d */
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uint16_t e_cblp; /* Bytes on last page of file, 0x90 */
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uint16_t e_cp; /* Pages in file, 0x3 */
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uint16_t e_crlc; /* Relocations, 0x0 */
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uint16_t e_cparhdr; /* Size of header in paragraphs, 0x4 */
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uint16_t e_minalloc; /* Minimum extra paragraphs needed, 0x0 */
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uint16_t e_maxalloc; /* Maximum extra paragraphs needed, 0xFFFF */
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uint16_t e_ss; /* Initial (relative) SS value, 0x0 */
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uint16_t e_sp; /* Initial SP value, 0xb8 */
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uint16_t e_csum; /* Checksum, 0x0 */
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uint16_t e_ip; /* Initial IP value, 0x0 */
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uint16_t e_cs; /* Initial (relative) CS value, 0x0 */
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uint16_t e_lfarlc; /* File address of relocation table, 0x40 */
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uint16_t e_ovno; /* Overlay number, 0x0 */
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char e_res[4][2]; /* Reserved words, all 0x0 */
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uint16_t e_oemid; /* OEM identifier (for e_oeminfo), 0x0 */
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uint16_t e_oeminfo; /* OEM information; e_oemid specific, 0x0 */
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char e_res2[10][2]; /* Reserved words, all 0x0 */
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uint32_t e_lfanew; /* File address of new exe header, 0x80 */
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char dos_message[16][4]; /* other stuff, always follow DOS header */
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uint32_t nt_signature; /* required NT signature, 0x4550 */
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/* From standard header */
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uint16_t f_magic; /* magic number */
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uint16_t f_nscns; /* number of sections */
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uint32_t f_timdat; /* time & date stamp */
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uint32_t f_symptr; /* file pointer to symtab */
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uint32_t f_nsyms; /* number of symtab entries */
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uint16_t f_opthdr; /* sizeof(optional hdr) */
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uint16_t f_flags; /* flags */
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};
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#define FILHDR struct external_PE_filehdr
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#undef FILHSZ
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#define FILHSZ 152
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#endif
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typedef struct
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{
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uint16_t magic; /* type of file */
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uint16_t vstamp; /* version stamp */
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uint32_t tsize; /* text size in bytes, padded to FW bdry*/
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uint32_t dsize; /* initialized data " " */
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uint32_t bsize; /* uninitialized data " " */
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uint32_t entry; /* entry pt. */
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uint32_t text_start; /* base of text used for this file */
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#ifdef __i386__
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uint32_t data_start; /* base of all data used for this file */
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#endif
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/* NT extra fields; see internal.h for descriptions */
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uintptr_t ImageBase;
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uint32_t SectionAlignment;
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uint32_t FileAlignment;
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uint16_t MajorOperatingSystemVersion;
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uint16_t MinorOperatingSystemVersion;
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uint16_t MajorImageVersion;
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uint16_t MinorImageVersion;
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uint16_t MajorSubsystemVersion;
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uint16_t MinorSubsystemVersion;
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char Reserved1[4];
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uint32_t SizeOfImage;
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uint32_t SizeOfHeaders;
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uint32_t CheckSum;
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uint16_t Subsystem;
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uint16_t DllCharacteristics;
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uintptr_t SizeOfStackReserve;
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uintptr_t SizeOfStackCommit;
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uintptr_t SizeOfHeapReserve;
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uintptr_t SizeOfHeapCommit;
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uint32_t LoaderFlags;
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uint32_t NumberOfRvaAndSizes;
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/* IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES]; */
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char DataDirectory[16][2][4]; /* 16 entries, 2 elements/entry, 4 chars */
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} PEAOUTHDR;
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#undef AOUTSZ
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#ifdef __x86_64__
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#define AOUTSZ (AOUTHDRSZ + 212)
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#else
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#define AOUTSZ (AOUTHDRSZ + 196)
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#endif
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#undef E_FILNMLEN
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#define E_FILNMLEN 18 /* # characters in a file name */
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#endif
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/* end of coff/pe.h */
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#define DT_NON (0) /* no derived type */
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#define DT_PTR (1) /* pointer */
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#define DT_FCN (2) /* function */
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#define DT_ARY (3) /* array */
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#define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT))
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#define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT))
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#define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT))
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#ifdef __cplusplus
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}
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#endif
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#endif /* _A_OUT_H_ */
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