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

/*** coff information for the ARM */

#define COFFARM 1

/********************** 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_INTERWORK     file supports switching between ARM and Thumb instruction sets
 *      F_INTERWORK_SET the F_INTERWORK bit is valid
 *	F_APCS_FLOAT	code passes float arguments in float registers
 *	F_PIC		code is reentrant/position-independent
 *	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax)
 *	F_APCS_26	file uses 26 bit ARM Procedure Calling Standard
 *	F_APCS_SET	the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
 */

#define F_RELFLG	(0x0001)
#define F_EXEC		(0x0002)
#define F_LNNO		(0x0004)
#define F_LSYMS		(0x0008)
#define F_INTERWORK	(0x0010)
#define F_INTERWORK_SET	(0x0020)
#define F_APCS_FLOAT	(0x0040)
#undef  F_AR16WR
#define F_PIC		(0x0080)
#define	F_AR32WR	(0x0100)
#define F_APCS_26	(0x0400)
#define F_APCS_SET	(0x0800)

/* Bits stored in flags field of the internal_f structure */

#define F_INTERWORK	(0x0010)
#define F_APCS_FLOAT	(0x0040)
#define F_PIC		(0x0080)
#define F_APCS26	(0x1000)
#define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
#define F_ARM_2		(0x0400)
#define F_ARM_2a	(0x0800)
#define F_ARM_3		(0x0c00)
#define F_ARM_3M	(0x4000)
#define F_ARM_4		(0x4400)
#define F_ARM_4T	(0x4800)
#define F_ARM_5		(0x4c00)

/*
 * ARMMAGIC ought to encoded the procesor type,
 * but it is too late to change it now, instead
 * the flags field of the internal_f structure
 * is used as shown above.
 *
 * XXX - NC 5/6/97
 */

#define	ARMMAGIC	0xa00  /* I just made this up */ 

#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))

#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"

/* We use the .rdata section to hold read only data.  */
#define _LIT	".rdata"

/********************** 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];
  char r_offset[4];
};


#define RELOC struct external_reloc
#define RELSZ 14
Commit	Line	Data
252b5132 RH	1	/*** coff information for the ARM */
	2
	3	#define COFFARM 1
	4
	5	/******************** FILE HEADER ********************/
	6
	7	struct external_filehdr {
	8	char f_magic[2]; /* magic number */
	9	char f_nscns[2]; /* number of sections */
	10	char f_timdat[4]; /* time & date stamp */
	11	char f_symptr[4]; /* file pointer to symtab */
	12	char f_nsyms[4]; /* number of symtab entries */
	13	char f_opthdr[2]; /* sizeof(optional hdr) */
	14	char f_flags[2]; /* flags */
	15	};
	16
	17	/* Bits for f_flags:
	18	* F_RELFLG relocation info stripped from file
	19	* F_EXEC file is executable (no unresolved external references)
	20	* F_LNNO line numbers stripped from file
	21	* F_LSYMS local symbols stripped from file
	22	* F_INTERWORK file supports switching between ARM and Thumb instruction sets
	23	* F_INTERWORK_SET the F_INTERWORK bit is valid
	24	* F_APCS_FLOAT code passes float arguments in float registers
	25	* F_PIC code is reentrant/position-independent
	26	* F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
	27	* F_APCS_26 file uses 26 bit ARM Procedure Calling Standard
	28	* F_APCS_SET the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
	29	*/
	30
	31	#define F_RELFLG (0x0001)
	32	#define F_EXEC (0x0002)
	33	#define F_LNNO (0x0004)
	34	#define F_LSYMS (0x0008)
	35	#define F_INTERWORK (0x0010)
	36	#define F_INTERWORK_SET (0x0020)
	37	#define F_APCS_FLOAT (0x0040)
	38	#undef F_AR16WR
	39	#define F_PIC (0x0080)
	40	#define F_AR32WR (0x0100)
	41	#define F_APCS_26 (0x0400)
	42	#define F_APCS_SET (0x0800)
	43
	44	/* Bits stored in flags field of the internal_f structure */
	45
	46	#define F_INTERWORK (0x0010)
252b5132	47	#define F_APCS_FLOAT (0x0040)
a74ffb02 NC	48	#define F_PIC (0x0080)
	49	#define F_APCS26 (0x1000)
	50	#define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
	51	#define F_ARM_2 (0x0400)
	52	#define F_ARM_2a (0x0800)
	53	#define F_ARM_3 (0x0c00)
	54	#define F_ARM_3M (0x4000)
	55	#define F_ARM_4 (0x4400)
	56	#define F_ARM_4T (0x4800)
849a0ebf	57	#define F_ARM_5 (0x4c00)
252b5132 RH	58
	59	/*
	60	* ARMMAGIC ought to encoded the procesor type,
	61	* but it is too late to change it now, instead
	62	* the flags field of the internal_f structure
	63	* is used as shown above.
	64	*
	65	* XXX - NC 5/6/97
	66	*/
	67
	68	#define ARMMAGIC 0xa00 /* I just made this up */
	69
	70	#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))
	71
	72	#define FILHDR struct external_filehdr
	73	#define FILHSZ 20
	74
	75
	76	/******************** AOUT "OPTIONAL HEADER" ********************/
	77
	78
	79	typedef struct
	80	{
	81	char magic[2]; /* type of file */
	82	char vstamp[2]; /* version stamp */
	83	char tsize[4]; /* text size in bytes, padded to FW bdry*/
	84	char dsize[4]; /* initialized data " " */
	85	char bsize[4]; /* uninitialized data " " */
	86	char entry[4]; /* entry pt. */
	87	char text_start[4]; /* base of text used for this file */
	88	char data_start[4]; /* base of data used for this file */
	89
	90
	91	}
	92	AOUTHDR;
	93
	94
	95	#define AOUTSZ 28
	96	#define AOUTHDRSZ 28
	97
	98	#define OMAGIC 0404 /* object files, eg as output */
	99	#define ZMAGIC 0413 /* demand load format, eg normal ld output */
	100	#define STMAGIC 0401 /* target shlib */
	101	#define SHMAGIC 0443 /* host shlib */
	102
	103
	104	/* define some NT default values */
	105	/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
	106	#define NT_SECTION_ALIGNMENT 0x1000
	107	#define NT_FILE_ALIGNMENT 0x200
	108	#define NT_DEF_RESERVE 0x100000
	109	#define NT_DEF_COMMIT 0x1000
	110
	111	/******************** SECTION HEADER ********************/
	112
	113
	114	struct external_scnhdr {
	115	char s_name[8]; /* section name */
	116	char s_paddr[4]; /* physical address, aliased s_nlib */
	117	char s_vaddr[4]; /* virtual address */
	118	char s_size[4]; /* section size */
	119	char s_scnptr[4]; /* file ptr to raw data for section */
	120	char s_relptr[4]; /* file ptr to relocation */
	121	char s_lnnoptr[4]; /* file ptr to line numbers */
122	char s_nreloc[2]; /* number of relocation entries */
123	char s_nlnno[2]; /* number of line number entries*/
124	char s_flags[4]; /* flags */
125	};
126
127	#define SCNHDR struct external_scnhdr
128	#define SCNHSZ 40
129
130	/*
131	* names of "special" sections
132	*/
133	#define _TEXT ".text"
134	#define _DATA ".data"
135	#define _BSS ".bss"
136	#define _COMMENT ".comment"
137	#define _LIB ".lib"
138
139	/* We use the .rdata section to hold read only data. */
140	#define _LIT ".rdata"
141
142	/******************** LINE NUMBERS ********************/
143
144	/* 1 line number entry for every "breakpointable" source line in a section.
145	* Line numbers are grouped on a per function basis; first entry in a function
146	* grouping will have l_lnno = 0 and in place of physical address will be the
147	* symbol table index of the function name.
148	*/
149	struct external_lineno {
150	union {
151	char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
152	char l_paddr[4]; /* (physical) address of line number */
153	} l_addr;
154	char l_lnno[2]; /* line number */
155	};
156
157
158	#define LINENO struct external_lineno
159	#define LINESZ 6
160
161
162	/******************** SYMBOLS ********************/
163
164	#define E_SYMNMLEN 8 /* # characters in a symbol name */
165	#define E_FILNMLEN 14 /* # characters in a file name */
166	#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
167
168	struct external_syment
169	{
170	union {
171	char e_name[E_SYMNMLEN];
172	struct {
173	char e_zeroes[4];
174	char e_offset[4];
175	} e;
176	} e;
177	char e_value[4];
178	char e_scnum[2];
179	char e_type[2];
180	char e_sclass[1];
181	char e_numaux[1];
182	};
183
184	#define N_BTMASK (0xf)
185	#define N_TMASK (0x30)
186	#define N_BTSHFT (4)
187	#define N_TSHIFT (2)
188
189	union external_auxent {
190	struct {
191	char x_tagndx[4]; /* str, un, or enum tag indx */
192	union {
193	struct {
194	char x_lnno[2]; /* declaration line number */
195	char x_size[2]; /* str/union/array size */
196	} x_lnsz;
197	char x_fsize[4]; /* size of function */
198	} x_misc;
199	union {
200	struct { /* if ISFCN, tag, or .bb */
201	char x_lnnoptr[4]; /* ptr to fcn line # */
202	char x_endndx[4]; /* entry ndx past block end */
203	} x_fcn;
204	struct { /* if ISARY, up to 4 dimen. */
205	char x_dimen[E_DIMNUM][2];
206	} x_ary;
207	} x_fcnary;
208	char x_tvndx[2]; /* tv index */
209	} x_sym;
210
211	union {
212	char x_fname[E_FILNMLEN];
213	struct {
214	char x_zeroes[4];
215	char x_offset[4];
216	} x_n;
217	} x_file;
218
219	struct {
220	char x_scnlen[4]; /* section length */
221	char x_nreloc[2]; /* # relocation entries */
222	char x_nlinno[2]; /* # line numbers */
223	char x_checksum[4]; /* section COMDAT checksum */
224	char x_associated[2]; /* COMDAT associated section index */
225	char x_comdat[1]; /* COMDAT selection number */
226	} x_scn;
227
228	struct {
229	char x_tvfill[4]; /* tv fill value */
230	char x_tvlen[2]; /* length of .tv */
231	char x_tvran[2][2]; /* tv range */
232	} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
233
234
235	};
236
237	#define SYMENT struct external_syment
238	#define SYMESZ 18
239	#define AUXENT union external_auxent
240	#define AUXESZ 18
241
242
243	# define _ETEXT "etext"
244
245
246	/******************** RELOCATION DIRECTIVES ********************/
247
248
249
250	struct external_reloc {
251	char r_vaddr[4];
252	char r_symndx[4];
253	char r_type[2];
254	char r_offset[4];
255	};
256
257
258	#define RELOC struct external_reloc
259	#define RELSZ 14