[deliverable/binutils-gdb.git] / include / coff / i386.h

/*** coff information for Intel 386/486.  */


/********************** FILE HEADER **********************/

struct external_filehdr {
	char f_magic[2];	/* magic number			*/
	char f_nscns[2];	/* number of sections		*/
	char f_timdat[4];	/* time & date stamp		*/
	char f_symptr[4];	/* file pointer to symtab	*/
	char f_nsyms[4];	/* number of symtab entries	*/
	char f_opthdr[2];	/* sizeof(optional hdr)		*/
	char f_flags[2];	/* flags			*/
};

/* Bits for f_flags:
 *	F_RELFLG	relocation info stripped from file
 *	F_EXEC		file is executable (no unresolved external references)
 *	F_LNNO		line numbers stripped from file
 *	F_LSYMS		local symbols stripped from file
 *	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax)
 */

#define F_RELFLG	(0x0001)
#define F_EXEC		(0x0002)
#define F_LNNO		(0x0004)
#define F_LSYMS		(0x0008)


#define	I386MAGIC	0x14c
#define I386PTXMAGIC	0x154
#define I386AIXMAGIC	0x175

/* This is Lynx's all-platform magic number for executables. */

#define LYNXCOFFMAGIC	0415

#define I386BADMAG(x) (((x).f_magic != I386MAGIC) \
		       && (x).f_magic != I386AIXMAGIC \
		       && (x).f_magic != I386PTXMAGIC \
		       && (x).f_magic != LYNXCOFFMAGIC)

#define	FILHDR	struct external_filehdr
#define	FILHSZ	20


/********************** AOUT "OPTIONAL HEADER" **********************/


typedef struct 
{
  char 	magic[2];		/* type of file				*/
  char	vstamp[2];		/* version stamp			*/
  char	tsize[4];		/* text size in bytes, padded to FW bdry*/
  char	dsize[4];		/* initialized data "  "		*/
  char	bsize[4];		/* uninitialized data "   "		*/
  char	entry[4];		/* entry pt.				*/
  char 	text_start[4];		/* base of text used for this file */
  char 	data_start[4];		/* base of data used for this file */


}
AOUTHDR;


#define AOUTSZ 28
#define AOUTHDRSZ 28

#define OMAGIC          0404    /* object files, eg as output */
#define ZMAGIC          0413    /* demand load format, eg normal ld output */
#define STMAGIC		0401	/* target shlib */
#define SHMAGIC		0443	/* host   shlib */


/* define some NT default values */
/*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
#define NT_SECTION_ALIGNMENT 0x1000
#define NT_FILE_ALIGNMENT    0x200
#define NT_DEF_RESERVE       0x100000
#define NT_DEF_COMMIT        0x1000

/********************** SECTION HEADER **********************/


struct external_scnhdr {
	char		s_name[8];	/* section name			*/
	char		s_paddr[4];	/* physical address, aliased s_nlib */
	char		s_vaddr[4];	/* virtual address		*/
	char		s_size[4];	/* section size			*/
	char		s_scnptr[4];	/* file ptr to raw data for section */
	char		s_relptr[4];	/* file ptr to relocation	*/
	char		s_lnnoptr[4];	/* file ptr to line numbers	*/
	char		s_nreloc[2];	/* number of relocation entries	*/
	char		s_nlnno[2];	/* number of line number entries*/
	char		s_flags[4];	/* flags			*/
};

#define	SCNHDR	struct external_scnhdr
#define	SCNHSZ	40

/*
 * names of "special" sections
 */
#define _TEXT	".text"
#define _DATA	".data"
#define _BSS	".bss"
#define _COMMENT ".comment"
#define _LIB ".lib"

/********************** LINE NUMBERS **********************/

/* 1 line number entry for every "breakpointable" source line in a section.
 * Line numbers are grouped on a per function basis; first entry in a function
 * grouping will have l_lnno = 0 and in place of physical address will be the
 * symbol table index of the function name.
 */
struct external_lineno {
	union {
		char l_symndx[4];	/* function name symbol index, iff l_lnno == 0*/
		char l_paddr[4];	/* (physical) address of line number	*/
	} l_addr;
	char l_lnno[2];	/* line number		*/
};


#define	LINENO	struct external_lineno
#define	LINESZ	6


/********************** SYMBOLS **********************/

#define E_SYMNMLEN	8	/* # characters in a symbol name	*/
#define E_FILNMLEN	14	/* # characters in a file name		*/
#define E_DIMNUM	4	/* # array dimensions in auxiliary entry */

struct external_syment 
{
  union {
    char e_name[E_SYMNMLEN];
    struct {
      char e_zeroes[4];
      char e_offset[4];
    } e;
  } e;
  char e_value[4];
  char e_scnum[2];
  char e_type[2];
  char e_sclass[1];
  char e_numaux[1];
};

#define N_BTMASK	(0xf)
#define N_TMASK		(0x30)
#define N_BTSHFT	(4)
#define N_TSHIFT	(2)
  
union external_auxent {
	struct {
		char x_tagndx[4];	/* str, un, or enum tag indx */
		union {
			struct {
			    char  x_lnno[2]; /* declaration line number */
			    char  x_size[2]; /* str/union/array size */
			} x_lnsz;
			char x_fsize[4];	/* size of function */
		} x_misc;
		union {
			struct {		/* if ISFCN, tag, or .bb */
			    char x_lnnoptr[4];	/* ptr to fcn line # */
			    char x_endndx[4];	/* entry ndx past block end */
			} x_fcn;
			struct {		/* if ISARY, up to 4 dimen. */
			    char x_dimen[E_DIMNUM][2];
			} x_ary;
		} x_fcnary;
		char x_tvndx[2];		/* tv index */
	} x_sym;

	union {
		char x_fname[E_FILNMLEN];
		struct {
			char x_zeroes[4];
			char x_offset[4];
		} x_n;
	} x_file;

	struct {
		char x_scnlen[4];	/* section length */
		char x_nreloc[2];	/* # relocation entries */
		char x_nlinno[2];	/* # line numbers */
		char x_checksum[4];	/* section COMDAT checksum */
		char x_associated[2];	/* COMDAT associated section index */
		char x_comdat[1];	/* COMDAT selection number */
	} x_scn;

        struct {
		char x_tvfill[4];	/* tv fill value */
		char x_tvlen[2];	/* length of .tv */
		char x_tvran[2][2];	/* tv range */
	} x_tv;		/* info about .tv section (in auxent of symbol .tv)) */


};

#define	SYMENT	struct external_syment
#define	SYMESZ	18	
#define	AUXENT	union external_auxent
#define	AUXESZ	18


#	define _ETEXT	"etext"


/********************** RELOCATION DIRECTIVES **********************/


struct external_reloc {
  char r_vaddr[4];
  char r_symndx[4];
  char r_type[2];
};


#define RELOC struct external_reloc
#define RELSZ 10
Commit	Line	Data
252b5132 RH	1	/*** coff information for Intel 386/486. */
	2
	3
	4	/******************** FILE HEADER ********************/
	5
	6	struct external_filehdr {
	7	char f_magic[2]; /* magic number */
	8	char f_nscns[2]; /* number of sections */
	9	char f_timdat[4]; /* time & date stamp */
	10	char f_symptr[4]; /* file pointer to symtab */
	11	char f_nsyms[4]; /* number of symtab entries */
	12	char f_opthdr[2]; /* sizeof(optional hdr) */
	13	char f_flags[2]; /* flags */
	14	};
	15
	16	/* Bits for f_flags:
	17	* F_RELFLG relocation info stripped from file
	18	* F_EXEC file is executable (no unresolved external references)
	19	* F_LNNO line numbers stripped from file
	20	* F_LSYMS local symbols stripped from file
	21	* F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
	22	*/
	23
	24	#define F_RELFLG (0x0001)
	25	#define F_EXEC (0x0002)
	26	#define F_LNNO (0x0004)
	27	#define F_LSYMS (0x0008)
	28
	29
	30
	31	#define I386MAGIC 0x14c
	32	#define I386PTXMAGIC 0x154
	33	#define I386AIXMAGIC 0x175
	34
	35	/* This is Lynx's all-platform magic number for executables. */
	36
	37	#define LYNXCOFFMAGIC 0415
	38
	39	#define I386BADMAG(x) (((x).f_magic != I386MAGIC) \
	40	&& (x).f_magic != I386AIXMAGIC \
	41	&& (x).f_magic != I386PTXMAGIC \
	42	&& (x).f_magic != LYNXCOFFMAGIC)
	43
	44	#define FILHDR struct external_filehdr
	45	#define FILHSZ 20
	46
	47
	48	/******************** AOUT "OPTIONAL HEADER" ********************/
	49
	50
	51	typedef struct
	52	{
	53	char magic[2]; /* type of file */
	54	char vstamp[2]; /* version stamp */
	55	char tsize[4]; /* text size in bytes, padded to FW bdry*/
	56	char dsize[4]; /* initialized data " " */
	57	char bsize[4]; /* uninitialized data " " */
	58	char entry[4]; /* entry pt. */
	59	char text_start[4]; /* base of text used for this file */
	60	char data_start[4]; /* base of data used for this file */
	61
	62
	63	}
	64	AOUTHDR;
65
66
67	#define AOUTSZ 28
68	#define AOUTHDRSZ 28
69
70	#define OMAGIC 0404 /* object files, eg as output */
71	#define ZMAGIC 0413 /* demand load format, eg normal ld output */
72	#define STMAGIC 0401 /* target shlib */
73	#define SHMAGIC 0443 /* host shlib */
74
75
76	/* define some NT default values */
77	/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
78	#define NT_SECTION_ALIGNMENT 0x1000
79	#define NT_FILE_ALIGNMENT 0x200
80	#define NT_DEF_RESERVE 0x100000
81	#define NT_DEF_COMMIT 0x1000
82
83	/******************** SECTION HEADER ********************/
84
85
86	struct external_scnhdr {
87	char s_name[8]; /* section name */
88	char s_paddr[4]; /* physical address, aliased s_nlib */
89	char s_vaddr[4]; /* virtual address */
90	char s_size[4]; /* section size */
91	char s_scnptr[4]; /* file ptr to raw data for section */
92	char s_relptr[4]; /* file ptr to relocation */
93	char s_lnnoptr[4]; /* file ptr to line numbers */
94	char s_nreloc[2]; /* number of relocation entries */
95	char s_nlnno[2]; /* number of line number entries*/
96	char s_flags[4]; /* flags */
97	};
98
99	#define SCNHDR struct external_scnhdr
100	#define SCNHSZ 40
101
102	/*
103	* names of "special" sections
104	*/
105	#define _TEXT ".text"
106	#define _DATA ".data"
107	#define _BSS ".bss"
108	#define _COMMENT ".comment"
109	#define _LIB ".lib"
110
111	/******************** LINE NUMBERS ********************/
112
113	/* 1 line number entry for every "breakpointable" source line in a section.
114	* Line numbers are grouped on a per function basis; first entry in a function
115	* grouping will have l_lnno = 0 and in place of physical address will be the
116	* symbol table index of the function name.
117	*/
118	struct external_lineno {
119	union {
120	char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
121	char l_paddr[4]; /* (physical) address of line number */
122	} l_addr;
123	char l_lnno[2]; /* line number */
124	};
125
126
127	#define LINENO struct external_lineno
128	#define LINESZ 6
129
130
131	/******************** SYMBOLS ********************/
132
133	#define E_SYMNMLEN 8 /* # characters in a symbol name */
134	#define E_FILNMLEN 14 /* # characters in a file name */
135	#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
136
137	struct external_syment
138	{
139	union {
140	char e_name[E_SYMNMLEN];
141	struct {
142	char e_zeroes[4];
143	char e_offset[4];
144	} e;
145	} e;
146	char e_value[4];
147	char e_scnum[2];
148	char e_type[2];
149	char e_sclass[1];
150	char e_numaux[1];
151	};
152
153	#define N_BTMASK (0xf)
154	#define N_TMASK (0x30)
155	#define N_BTSHFT (4)
156	#define N_TSHIFT (2)
157
158	union external_auxent {
159	struct {
160	char x_tagndx[4]; /* str, un, or enum tag indx */
161	union {
162	struct {
163	char x_lnno[2]; /* declaration line number */
164	char x_size[2]; /* str/union/array size */
165	} x_lnsz;
166	char x_fsize[4]; /* size of function */
167	} x_misc;
168	union {
169	struct { /* if ISFCN, tag, or .bb */
170	char x_lnnoptr[4]; /* ptr to fcn line # */
171	char x_endndx[4]; /* entry ndx past block end */
172	} x_fcn;
173	struct { /* if ISARY, up to 4 dimen. */
174	char x_dimen[E_DIMNUM][2];
175	} x_ary;
176	} x_fcnary;
177	char x_tvndx[2]; /* tv index */
178	} x_sym;
179
180	union {
181	char x_fname[E_FILNMLEN];
182	struct {
183	char x_zeroes[4];
184	char x_offset[4];
185	} x_n;
186	} x_file;
187
188	struct {
189	char x_scnlen[4]; /* section length */
190	char x_nreloc[2]; /* # relocation entries */
191	char x_nlinno[2]; /* # line numbers */
192	char x_checksum[4]; /* section COMDAT checksum */
193	char x_associated[2]; /* COMDAT associated section index */
194	char x_comdat[1]; /* COMDAT selection number */
195	} x_scn;
196
197	struct {
198	char x_tvfill[4]; /* tv fill value */
199	char x_tvlen[2]; /* length of .tv */
200	char x_tvran[2][2]; /* tv range */
201	} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
202
203
204	};
205
206	#define SYMENT struct external_syment
207	#define SYMESZ 18
208	#define AUXENT union external_auxent
209	#define AUXESZ 18
210
211
212	# define _ETEXT "etext"
213
214
215	/******************** RELOCATION DIRECTIVES ********************/
216
217
218
219	struct external_reloc {
220	char r_vaddr[4];
221	char r_symndx[4];
222	char r_type[2];
223	};
224
225
226	#define RELOC struct external_reloc
227	#define RELSZ 10
228