[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_PIC_INT	(0x0020)
#define F_APCS_FLOAT	(0x0040)
#define F_ARM_ARCHITECTURE_MASK	(0x0c00)
#define F_ARM_2		(0x0000)
#define F_ARM_2a	(0x0000)
#define F_ARM_3		(0x0400)
#define F_ARM_3M	(0x0400)
#define F_ARM_4		(0x0800)
#define F_ARM_4T	(0x0c00)
#define F_APCS26	(0x4000)

/*
 * 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)
	47	#define F_PIC_INT (0x0020)
	48	#define F_APCS_FLOAT (0x0040)
	49	#define F_ARM_ARCHITECTURE_MASK (0x0c00)
	50	#define F_ARM_2 (0x0000)
	51	#define F_ARM_2a (0x0000)
	52	#define F_ARM_3 (0x0400)
	53	#define F_ARM_3M (0x0400)
	54	#define F_ARM_4 (0x0800)
	55	#define F_ARM_4T (0x0c00)
	56	#define F_APCS26 (0x4000)
	57
	58	/*
	59	* ARMMAGIC ought to encoded the procesor type,
	60	* but it is too late to change it now, instead
	61	* the flags field of the internal_f structure
	62	* is used as shown above.
	63	*
	64	* XXX - NC 5/6/97
65	*/
66
67	#define ARMMAGIC 0xa00 /* I just made this up */
68
69	#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))
70
71	#define FILHDR struct external_filehdr
72	#define FILHSZ 20
73
74
75	/******************** AOUT "OPTIONAL HEADER" ********************/
76
77
78	typedef struct
79	{
80	char magic[2]; /* type of file */
81	char vstamp[2]; /* version stamp */
82	char tsize[4]; /* text size in bytes, padded to FW bdry*/
83	char dsize[4]; /* initialized data " " */
84	char bsize[4]; /* uninitialized data " " */
85	char entry[4]; /* entry pt. */
86	char text_start[4]; /* base of text used for this file */
87	char data_start[4]; /* base of data used for this file */
88
89
90	}
91	AOUTHDR;
92
93
94	#define AOUTSZ 28
95	#define AOUTHDRSZ 28
96
97	#define OMAGIC 0404 /* object files, eg as output */
98	#define ZMAGIC 0413 /* demand load format, eg normal ld output */
99	#define STMAGIC 0401 /* target shlib */
100	#define SHMAGIC 0443 /* host shlib */
101
102
103	/* define some NT default values */
104	/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
105	#define NT_SECTION_ALIGNMENT 0x1000
106	#define NT_FILE_ALIGNMENT 0x200
107	#define NT_DEF_RESERVE 0x100000
108	#define NT_DEF_COMMIT 0x1000
109
110	/******************** SECTION HEADER ********************/
111
112
113	struct external_scnhdr {
114	char s_name[8]; /* section name */
115	char s_paddr[4]; /* physical address, aliased s_nlib */
116	char s_vaddr[4]; /* virtual address */
117	char s_size[4]; /* section size */
118	char s_scnptr[4]; /* file ptr to raw data for section */
119	char s_relptr[4]; /* file ptr to relocation */
120	char s_lnnoptr[4]; /* file ptr to line numbers */
121	char s_nreloc[2]; /* number of relocation entries */
122	char s_nlnno[2]; /* number of line number entries*/
123	char s_flags[4]; /* flags */
124	};
125
126	#define SCNHDR struct external_scnhdr
127	#define SCNHSZ 40
128
129	/*
130	* names of "special" sections
131	*/
132	#define _TEXT ".text"
133	#define _DATA ".data"
134	#define _BSS ".bss"
135	#define _COMMENT ".comment"
136	#define _LIB ".lib"
137
138	/* We use the .rdata section to hold read only data. */
139	#define _LIT ".rdata"
140
141	/******************** LINE NUMBERS ********************/
142
143	/* 1 line number entry for every "breakpointable" source line in a section.
144	* Line numbers are grouped on a per function basis; first entry in a function
145	* grouping will have l_lnno = 0 and in place of physical address will be the
146	* symbol table index of the function name.
147	*/
148	struct external_lineno {
149	union {
150	char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
151	char l_paddr[4]; /* (physical) address of line number */
152	} l_addr;
153	char l_lnno[2]; /* line number */
154	};
155
156
157	#define LINENO struct external_lineno
158	#define LINESZ 6
159
160
161	/******************** SYMBOLS ********************/
162
163	#define E_SYMNMLEN 8 /* # characters in a symbol name */
164	#define E_FILNMLEN 14 /* # characters in a file name */
165	#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
166
167	struct external_syment
168	{
169	union {
170	char e_name[E_SYMNMLEN];
171	struct {
172	char e_zeroes[4];
173	char e_offset[4];
174	} e;
175	} e;
176	char e_value[4];
177	char e_scnum[2];
178	char e_type[2];
179	char e_sclass[1];
180	char e_numaux[1];
181	};
182
183	#define N_BTMASK (0xf)
184	#define N_TMASK (0x30)
185	#define N_BTSHFT (4)
186	#define N_TSHIFT (2)
187
188	union external_auxent {
189	struct {
190	char x_tagndx[4]; /* str, un, or enum tag indx */
191	union {
192	struct {
193	char x_lnno[2]; /* declaration line number */
194	char x_size[2]; /* str/union/array size */
195	} x_lnsz;
196	char x_fsize[4]; /* size of function */
197	} x_misc;
198	union {
199	struct { /* if ISFCN, tag, or .bb */
200	char x_lnnoptr[4]; /* ptr to fcn line # */
201	char x_endndx[4]; /* entry ndx past block end */
202	} x_fcn;
203	struct { /* if ISARY, up to 4 dimen. */
204	char x_dimen[E_DIMNUM][2];
205	} x_ary;
206	} x_fcnary;
207	char x_tvndx[2]; /* tv index */
208	} x_sym;
209
210	union {
211	char x_fname[E_FILNMLEN];
212	struct {
213	char x_zeroes[4];
214	char x_offset[4];
215	} x_n;
216	} x_file;
217
218	struct {
219	char x_scnlen[4]; /* section length */
220	char x_nreloc[2]; /* # relocation entries */
221	char x_nlinno[2]; /* # line numbers */
222	char x_checksum[4]; /* section COMDAT checksum */
223	char x_associated[2]; /* COMDAT associated section index */
224	char x_comdat[1]; /* COMDAT selection number */
225	} x_scn;
226
227	struct {
228	char x_tvfill[4]; /* tv fill value */
229	char x_tvlen[2]; /* length of .tv */
230	char x_tvran[2][2]; /* tv range */
231	} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
232
233
234	};
235
236	#define SYMENT struct external_syment
237	#define SYMESZ 18
238	#define AUXENT union external_auxent
239	#define AUXESZ 18
240
241
242	# define _ETEXT "etext"
243
244
245	/******************** RELOCATION DIRECTIVES ********************/
246
247
248
249	struct external_reloc {
250	char r_vaddr[4];
251	char r_symndx[4];
252	char r_type[2];
253	char r_offset[4];
254	};
255
256
257	#define RELOC struct external_reloc
258	#define RELSZ 14