[thirdparty/binutils-gdb.git] / include / coff / ecoff.h

#ifndef ECOFF_H
#define ECOFF_H

/* Generic ECOFF support.
   This does not include symbol information, found in sym.h and
   symconst.h.  */

/* Mips magic numbers used in filehdr.  MIPS_MAGIC_LITTLE is used on
   little endian machines.  MIPS_MAGIC_BIG is used on big endian
   machines.  Where is MIPS_MAGIC_1 from?  */
#define MIPS_MAGIC_1 0x0180
#define MIPS_MAGIC_LITTLE 0x0162
#define MIPS_MAGIC_BIG 0x0160

/* These are the magic numbers used for MIPS code compiled at ISA
   level 2.  */
#define MIPS_MAGIC_LITTLE2 0x0166
#define MIPS_MAGIC_BIG2 0x0163

/* These are the magic numbers used for MIPS code compiled at ISA
   level 3.  */
#define MIPS_MAGIC_LITTLE3 0x142
#define MIPS_MAGIC_BIG3 0x140

/* Alpha magic numbers used in filehdr.  */
#define ALPHA_MAGIC 0x183

/* Magic numbers used in a.out header.  */
#define ECOFF_AOUT_OMAGIC 0407	/* not demand paged (ld -N).  */
#define ECOFF_AOUT_ZMAGIC 0413	/* demand load format, eg normal ld output */

/* Names of special sections.  */
#define _TEXT   ".text"
#define _DATA   ".data"
#define _BSS    ".bss"
#define _RDATA	".rdata"
#define _SDATA	".sdata"
#define _SBSS	".sbss"
#define _LITA	".lita"
#define _LIT4	".lit4"
#define _LIT8	".lit8"
#define _LIB	".lib"
#define _INIT	".init"
#define _FINI	".fini"
#define _PDATA	".pdata"
#define _XDATA	".xdata"

/* ECOFF uses some additional section flags.  */
#define STYP_RDATA	     0x100
#define STYP_SDATA	     0x200
#define STYP_SBSS	     0x400
#define STYP_ECOFF_FINI	 0x1000000
#define STYP_EXTENDESC	 0x2000000 /* 0x02FFF000 bits => scn type, rest clr */
#define STYP_LITA	 0x4000000
#define STYP_LIT8	 0x8000000
#define STYP_LIT4	0x10000000
#define STYP_ECOFF_INIT 0x80000000
#define STYP_OTHER_LOAD (STYP_ECOFF_INIT | STYP_ECOFF_FINI)

/* extended section types */
#define STYP_COMMENT	 0x2100000
#define STYP_XDATA	 0x2400000
#define STYP_PDATA	 0x2800000

/* The linker needs a section to hold small common variables while
   linking.  There is no convenient way to create it when the linker
   needs it, so we always create one for each BFD.  We then avoid
   writing it out.  */
#define SCOMMON ".scommon"

/* The ECOFF a.out header carries information about register masks and
   the gp value.  The assembler needs to be able to write out this
   information, and objcopy needs to be able to copy it from one file
   to another.  To handle this in BFD, we use a dummy section to hold
   the information.  We call this section .reginfo, since MIPS ELF has
   a .reginfo section which serves a similar purpose.  When BFD
   recognizes an ECOFF object, it copies the information into a
   private data structure.  When the .reginfo section is read, the
   information is retrieved from the private data structure.  When the
   .reginfo section is written, the information in the private data
   structure is updated.  The contents of the .reginfo section, as
   seen by programs outside BFD, is a ecoff_reginfo structure.  The
   contents of the structure are as seen on the host, so no swapping
   issues arise.

   The assembler used to update the private BFD data structures
   directly.  With this approach, it instead just creates a .reginfo
   section and updates that.  The real advantage of this approach is
   that objcopy works automatically.  */
#define REGINFO ".reginfo"
struct ecoff_reginfo
{
  bfd_vma gp_value;		/* GP register value.		*/
  unsigned long gprmask;	/* General registers used.	*/
  unsigned long cprmask[4];	/* Coprocessor registers used.	*/
  unsigned long fprmask;	/* Floating pointer registers used.  */
};  

/* If the extern bit in a reloc is 1, then r_symndx is an index into
   the external symbol table.  If the extern bit is 0, then r_symndx
   indicates a section, and is one of the following values.  */
#define RELOC_SECTION_NONE	0
#define RELOC_SECTION_TEXT	1
#define RELOC_SECTION_RDATA	2
#define RELOC_SECTION_DATA	3
#define RELOC_SECTION_SDATA	4
#define RELOC_SECTION_SBSS	5
#define RELOC_SECTION_BSS	6
#define RELOC_SECTION_INIT	7
#define RELOC_SECTION_LIT8	8
#define RELOC_SECTION_LIT4	9
#define RELOC_SECTION_XDATA    10
#define RELOC_SECTION_PDATA    11
#define RELOC_SECTION_FINI     12
#define RELOC_SECTION_LITA     13
#define RELOC_SECTION_ABS      14

#define NUM_RELOC_SECTIONS     15

/********************** STABS **********************/

/* gcc uses mips-tfile to output type information in special stabs
   entries.  These must match the corresponding definition in
   gcc/config/mips.h.  At some point, these should probably go into a
   shared include file, but currently gcc and gdb do not share any
   directories. */
#define CODE_MASK 0x8F300
#define ECOFF_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
#define ECOFF_MARK_STAB(code) ((code)+CODE_MASK)
#define ECOFF_UNMARK_STAB(code) ((code)-CODE_MASK)
#define STABS_SYMBOL "@stabs"

/********************** COFF **********************/

/* gcc also uses mips-tfile to output COFF debugging information.
   These are the values it uses when outputting the .type directive.
   These should also be in a shared include file.  */
#define N_BTMASK	(017)
#define N_TMASK		(060)
#define N_BTSHFT	(4)
#define N_TSHIFT	(2)

/********************** AUX **********************/

/* The auxiliary type information is the same on all known ECOFF
   targets.  I can't see any reason that it would ever change, so I am
   going to gamble and define the external structures here, in the
   target independent ECOFF header file.  The internal forms are
   defined in coff/sym.h, which was originally donated by MIPS
   Computer Systems.  */

/* Type information external record */

struct tir_ext {
	unsigned char	t_bits1[1];
	unsigned char	t_tq45[1];
	unsigned char	t_tq01[1];
	unsigned char	t_tq23[1];
};

#define	TIR_BITS1_FBITFIELD_BIG		0x80
#define	TIR_BITS1_FBITFIELD_LITTLE	0x01

#define	TIR_BITS1_CONTINUED_BIG		0x40
#define	TIR_BITS1_CONTINUED_LITTLE	0x02

#define	TIR_BITS1_BT_BIG		0x3F
#define	TIR_BITS1_BT_SH_BIG		0
#define	TIR_BITS1_BT_LITTLE		0xFC
#define	TIR_BITS1_BT_SH_LITTLE		2

#define	TIR_BITS_TQ4_BIG		0xF0
#define	TIR_BITS_TQ4_SH_BIG		4
#define	TIR_BITS_TQ5_BIG		0x0F
#define	TIR_BITS_TQ5_SH_BIG		0
#define	TIR_BITS_TQ4_LITTLE		0x0F
#define	TIR_BITS_TQ4_SH_LITTLE		0
#define	TIR_BITS_TQ5_LITTLE		0xF0
#define	TIR_BITS_TQ5_SH_LITTLE		4

#define	TIR_BITS_TQ0_BIG		0xF0
#define	TIR_BITS_TQ0_SH_BIG		4
#define	TIR_BITS_TQ1_BIG		0x0F
#define	TIR_BITS_TQ1_SH_BIG		0
#define	TIR_BITS_TQ0_LITTLE		0x0F
#define	TIR_BITS_TQ0_SH_LITTLE		0
#define	TIR_BITS_TQ1_LITTLE		0xF0
#define	TIR_BITS_TQ1_SH_LITTLE		4

#define	TIR_BITS_TQ2_BIG		0xF0
#define	TIR_BITS_TQ2_SH_BIG		4
#define	TIR_BITS_TQ3_BIG		0x0F
#define	TIR_BITS_TQ3_SH_BIG		0
#define	TIR_BITS_TQ2_LITTLE		0x0F
#define	TIR_BITS_TQ2_SH_LITTLE		0
#define	TIR_BITS_TQ3_LITTLE		0xF0
#define	TIR_BITS_TQ3_SH_LITTLE		4

/* Relative symbol external record */

struct rndx_ext {
	unsigned char	r_bits[4];
};

#define	RNDX_BITS0_RFD_SH_LEFT_BIG	4
#define	RNDX_BITS1_RFD_BIG		0xF0
#define	RNDX_BITS1_RFD_SH_BIG		4

#define	RNDX_BITS0_RFD_SH_LEFT_LITTLE	0
#define	RNDX_BITS1_RFD_LITTLE		0x0F
#define	RNDX_BITS1_RFD_SH_LEFT_LITTLE	8

#define	RNDX_BITS1_INDEX_BIG		0x0F
#define	RNDX_BITS1_INDEX_SH_LEFT_BIG	16
#define	RNDX_BITS2_INDEX_SH_LEFT_BIG	8
#define	RNDX_BITS3_INDEX_SH_LEFT_BIG	0

#define	RNDX_BITS1_INDEX_LITTLE		0xF0
#define	RNDX_BITS1_INDEX_SH_LITTLE	4
#define	RNDX_BITS2_INDEX_SH_LEFT_LITTLE	4
#define	RNDX_BITS3_INDEX_SH_LEFT_LITTLE	12

/* Auxiliary symbol information external record */

union aux_ext {
	struct tir_ext	a_ti;
	struct rndx_ext	a_rndx;
	unsigned char	a_dnLow[4];
	unsigned char	a_dnHigh[4];
	unsigned char	a_isym[4];
	unsigned char	a_iss[4];
	unsigned char	a_width[4];
	unsigned char	a_count[4];
};

#define AUX_GET_ANY(bigend, ax, field) \
  ((bigend) ? bfd_getb32 ((ax)->field) : bfd_getl32 ((ax)->field))

#define	AUX_GET_DNLOW(bigend, ax)	AUX_GET_ANY ((bigend), (ax), a_dnLow)
#define	AUX_GET_DNHIGH(bigend, ax)	AUX_GET_ANY ((bigend), (ax), a_dnHigh)
#define	AUX_GET_ISYM(bigend, ax)	AUX_GET_ANY ((bigend), (ax), a_isym)
#define AUX_GET_ISS(bigend, ax)		AUX_GET_ANY ((bigend), (ax), a_iss)
#define AUX_GET_WIDTH(bigend, ax)	AUX_GET_ANY ((bigend), (ax), a_width)
#define AUX_GET_COUNT(bigend, ax)	AUX_GET_ANY ((bigend), (ax), a_count)

#define AUX_PUT_ANY(bigend, val, ax, field) \
  ((bigend) \
   ? (bfd_putb32 ((bfd_vma) (val), (ax)->field), 0) \
   : (bfd_putl32 ((bfd_vma) (val), (ax)->field), 0))

#define AUX_PUT_DNLOW(bigend, val, ax) \
  AUX_PUT_ANY ((bigend), (val), (ax), a_dnLow)
#define AUX_PUT_DNHIGH(bigend, val, ax) \
  AUX_PUT_ANY ((bigend), (val), (ax), a_dnHigh)
#define AUX_PUT_ISYM(bigend, val, ax) \
  AUX_PUT_ANY ((bigend), (val), (ax), a_isym)
#define AUX_PUT_ISS(bigend, val, ax) \
  AUX_PUT_ANY ((bigend), (val), (ax), a_iss)
#define AUX_PUT_WIDTH(bigend, val, ax) \
  AUX_PUT_ANY ((bigend), (val), (ax), a_width)
#define AUX_PUT_COUNT(bigend, val, ax) \
  AUX_PUT_ANY ((bigend), (val), (ax), a_count)

/* Prototypes for the swapping functions.  These require that sym.h be
   included before this file.  */

extern void ecoff_swap_tir_in PARAMS ((int bigend, struct tir_ext *, TIR *));
extern void ecoff_swap_tir_out PARAMS ((int bigend, TIR *, struct tir_ext *));
extern void ecoff_swap_rndx_in PARAMS ((int bigend, struct rndx_ext *,
					RNDXR *));
extern void ecoff_swap_rndx_out PARAMS ((int bigend, RNDXR *,
					 struct rndx_ext *));

/********************** SWAPPING **********************/

/* The generic ECOFF code needs to be able to swap debugging
   information in and out in the specific format used by a particular
   ECOFF implementation.  This structure provides the information
   needed to do this.  */

struct ecoff_debug_swap
{
  /* Symbol table magic number.  */
  int sym_magic;
  /* Alignment of debugging information.  E.g., 4.  */
  bfd_size_type debug_align;
  /* Sizes of external symbolic information.  */
  bfd_size_type external_hdr_size;
  bfd_size_type external_dnr_size;
  bfd_size_type external_pdr_size;
  bfd_size_type external_sym_size;
  bfd_size_type external_opt_size;
  bfd_size_type external_fdr_size;
  bfd_size_type external_rfd_size;
  bfd_size_type external_ext_size;
  /* Functions to swap in external symbolic data.  */
  void (*swap_hdr_in) PARAMS ((bfd *, PTR, HDRR *));
  void (*swap_dnr_in) PARAMS ((bfd *, PTR, DNR *));
  void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *));
  void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *));
  void (*swap_opt_in) PARAMS ((bfd *, PTR, OPTR *));
  void (*swap_fdr_in) PARAMS ((bfd *, PTR, FDR *));
  void (*swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *));
  void (*swap_ext_in) PARAMS ((bfd *, PTR, EXTR *));
  /* Functions to swap out external symbolic data.  */
  void (*swap_hdr_out) PARAMS ((bfd *, const HDRR *, PTR));
  void (*swap_dnr_out) PARAMS ((bfd *, const DNR *, PTR));
  void (*swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR));
  void (*swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR));
  void (*swap_opt_out) PARAMS ((bfd *, const OPTR *, PTR));
  void (*swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR));
  void (*swap_rfd_out) PARAMS ((bfd *, const RFDT *, PTR));
  void (*swap_ext_out) PARAMS ((bfd *, const EXTR *, PTR));
  /* As noted above, it so happens that the auxiliary type information
   has the same type and format for all known ECOFF targets.  I don't
   see any reason that that should change, so at least for now the
   auxiliary swapping information is not in this table.  */
};

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

/* For efficiency, gdb deals directly with the unswapped symbolic
   information (that way it only takes the time to swap information
   that it really needs to read).  gdb originally retrieved the
   information directly from the BFD backend information, but that
   strategy, besides being sort of ugly, does not work for MIPS ELF,
   which also uses ECOFF debugging information.  This structure holds
   pointers to the (mostly) unswapped symbolic information.  */

struct ecoff_debug_info
{
  /* The swapped ECOFF symbolic header.  */
  HDRR symbolic_header;

  /* Pointers to the unswapped symbolic information.  Note that the
     pointers to external structures point to different sorts of
     information on different ECOFF targets.  The ecoff_debug_swap
     structure provides the sizes of the structures and the functions
     needed to swap the information in and out.  These pointers are
     all pointers to arrays, not single structures.  They will be NULL
     if there are no instances of the relevant structure.  */
  unsigned char *line;
  PTR external_dnr;	/* struct dnr_ext */
  PTR external_pdr;	/* struct pdr_ext */
  PTR external_sym;	/* struct sym_ext */
  PTR external_opt;	/* struct opt_ext */
  union aux_ext *external_aux;
  char *ss;
  char *ssext;
  PTR external_fdr;	/* struct fdr_ext */
  PTR external_rfd;	/* struct rfd_ext */
  PTR external_ext;	/* struct ext_ext */

  /* When we are linking, the above pointers point to growing buffers.
     This set of pointers point to the end of the buffers.  */
  unsigned char *line_end;
  PTR external_dnr_end;	/* struct dnr_ext */
  PTR external_pdr_end;	/* struct pdr_ext */
  PTR external_sym_end;	/* struct sym_ext */
  PTR external_opt_end;	/* struct opt_ext */
  union aux_ext *external_aux_end;
  char *ss_end;
  char *ssext_end;
  PTR external_fdr_end;	/* struct fdr_ext */
  PTR external_rfd_end;	/* struct rfd_ext */
  PTR external_ext_end;	/* struct ext_ext */

  /* When linking, this field is set to the base FDR index for an
     input BFD in the output FDR information, and is used when writing
     out the xternal symbols.  */
  bfd_size_type ifdbase;

  /* The swapped FDR information.  Currently this is never NULL, but
     code using this structure should probably double-check in case
     this changes in the future.  This is a pointer to an array, not a
     single structure.  */
  FDR *fdr;
};

#endif /* ! defined (ECOFF_H) */
Commit	Line	Data
3f61fc96 ILT	1	#ifndef ECOFF_H
	2	#define ECOFF_H
	3
	4	/* Generic ECOFF support.
	5	This does not include symbol information, found in sym.h and
	6	symconst.h. */
	7
	8	/* Mips magic numbers used in filehdr. MIPS_MAGIC_LITTLE is used on
	9	little endian machines. MIPS_MAGIC_BIG is used on big endian
	10	machines. Where is MIPS_MAGIC_1 from? */
	11	#define MIPS_MAGIC_1 0x0180
	12	#define MIPS_MAGIC_LITTLE 0x0162
	13	#define MIPS_MAGIC_BIG 0x0160
	14
777bb8e2 ILT	15	/* These are the magic numbers used for MIPS code compiled at ISA
	16	level 2. */
	17	#define MIPS_MAGIC_LITTLE2 0x0166
	18	#define MIPS_MAGIC_BIG2 0x0163
	19
	20	/* These are the magic numbers used for MIPS code compiled at ISA
	21	level 3. */
	22	#define MIPS_MAGIC_LITTLE3 0x142
	23	#define MIPS_MAGIC_BIG3 0x140
	24
3f61fc96 ILT	25	/* Alpha magic numbers used in filehdr. */
	26	#define ALPHA_MAGIC 0x183
	27
	28	/* Magic numbers used in a.out header. */
	29	#define ECOFF_AOUT_OMAGIC 0407 /* not demand paged (ld -N). */
	30	#define ECOFF_AOUT_ZMAGIC 0413 /* demand load format, eg normal ld output */
	31
	32	/* Names of special sections. */
	33	#define _TEXT ".text"
	34	#define _DATA ".data"
	35	#define _BSS ".bss"
	36	#define _RDATA ".rdata"
	37	#define _SDATA ".sdata"
	38	#define _SBSS ".sbss"
777bb8e2	39	#define _LITA ".lita"
3f61fc96 ILT	40	#define _LIT4 ".lit4"
	41	#define _LIT8 ".lit8"
	42	#define _LIB ".lib"
	43	#define _INIT ".init"
777bb8e2 ILT	44	#define _FINI ".fini"
	45	#define _PDATA ".pdata"
	46	#define _XDATA ".xdata"
3f61fc96 ILT	47
3f61fc96 ILT	48	/* ECOFF uses some additional section flags. */
5538fdbb KR	49	#define STYP_RDATA 0x100
	50	#define STYP_SDATA 0x200
	51	#define STYP_SBSS 0x400
	52	#define STYP_ECOFF_FINI 0x1000000
	53	#define STYP_EXTENDESC 0x2000000 /* 0x02FFF000 bits => scn type, rest clr */
	54	#define STYP_LITA 0x4000000
	55	#define STYP_LIT8 0x8000000
	56	#define STYP_LIT4 0x10000000
3f61fc96	57	#define STYP_ECOFF_INIT 0x80000000
777bb8e2	58	#define STYP_OTHER_LOAD (STYP_ECOFF_INIT \| STYP_ECOFF_FINI)
3f61fc96	59
5538fdbb KR	60	/* extended section types */
	61	#define STYP_COMMENT 0x2100000
	62	#define STYP_XDATA 0x2400000
	63	#define STYP_PDATA 0x2800000
	64
3f61fc96 ILT	65	/* The linker needs a section to hold small common variables while
	66	linking. There is no convenient way to create it when the linker
	67	needs it, so we always create one for each BFD. We then avoid
	68	writing it out. */
	69	#define SCOMMON ".scommon"
	70
777bb8e2 ILT	71	/* The ECOFF a.out header carries information about register masks and
	72	the gp value. The assembler needs to be able to write out this
	73	information, and objcopy needs to be able to copy it from one file
	74	to another. To handle this in BFD, we use a dummy section to hold
	75	the information. We call this section .reginfo, since MIPS ELF has
	76	a .reginfo section which serves a similar purpose. When BFD
	77	recognizes an ECOFF object, it copies the information into a
	78	private data structure. When the .reginfo section is read, the
	79	information is retrieved from the private data structure. When the
	80	.reginfo section is written, the information in the private data
	81	structure is updated. The contents of the .reginfo section, as
	82	seen by programs outside BFD, is a ecoff_reginfo structure. The
	83	contents of the structure are as seen on the host, so no swapping
	84	issues arise.
	85
	86	The assembler used to update the private BFD data structures
	87	directly. With this approach, it instead just creates a .reginfo
	88	section and updates that. The real advantage of this approach is
	89	that objcopy works automatically. */
	90	#define REGINFO ".reginfo"
	91	struct ecoff_reginfo
	92	{
	93	bfd_vma gp_value; /* GP register value. */
	94	unsigned long gprmask; /* General registers used. */
	95	unsigned long cprmask[4]; /* Coprocessor registers used. */
	96	unsigned long fprmask; /* Floating pointer registers used. */
	97	};
	98
3f61fc96 ILT	99	/* If the extern bit in a reloc is 1, then r_symndx is an index into
	100	the external symbol table. If the extern bit is 0, then r_symndx
	101	indicates a section, and is one of the following values. */
db5e2a8b	102	#define RELOC_SECTION_NONE 0
3f61fc96 ILT	103	#define RELOC_SECTION_TEXT 1
	104	#define RELOC_SECTION_RDATA 2
	105	#define RELOC_SECTION_DATA 3
	106	#define RELOC_SECTION_SDATA 4
	107	#define RELOC_SECTION_SBSS 5
	108	#define RELOC_SECTION_BSS 6
	109	#define RELOC_SECTION_INIT 7
	110	#define RELOC_SECTION_LIT8 8
	111	#define RELOC_SECTION_LIT4 9
	112	#define RELOC_SECTION_XDATA 10
	113	#define RELOC_SECTION_PDATA 11
	114	#define RELOC_SECTION_FINI 12
	115	#define RELOC_SECTION_LITA 13
	116	#define RELOC_SECTION_ABS 14
	117
60ee38e9 ILT	118	#define NUM_RELOC_SECTIONS 15
60ee38e9 ILT	119
3f61fc96 ILT	120	/******************** STABS ********************/
	121
	122	/* gcc uses mips-tfile to output type information in special stabs
	123	entries. These must match the corresponding definition in
	124	gcc/config/mips.h. At some point, these should probably go into a
	125	shared include file, but currently gcc and gdb do not share any
	126	directories. */
	127	#define CODE_MASK 0x8F300
	128	#define ECOFF_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
	129	#define ECOFF_MARK_STAB(code) ((code)+CODE_MASK)
	130	#define ECOFF_UNMARK_STAB(code) ((code)-CODE_MASK)
	131	#define STABS_SYMBOL "@stabs"
	132
	133	/******************** COFF ********************/
	134
	135	/* gcc also uses mips-tfile to output COFF debugging information.
	136	These are the values it uses when outputting the .type directive.
	137	These should also be in a shared include file. */
	138	#define N_BTMASK (017)
	139	#define N_TMASK (060)
	140	#define N_BTSHFT (4)
	141	#define N_TSHIFT (2)
	142
	143	/******************** AUX ********************/
	144
	145	/* The auxiliary type information is the same on all known ECOFF
	146	targets. I can't see any reason that it would ever change, so I am
	147	going to gamble and define the external structures here, in the
	148	target independent ECOFF header file. The internal forms are
	149	defined in coff/sym.h, which was originally donated by MIPS
	150	Computer Systems. */
	151
	152	/* Type information external record */
	153
	154	struct tir_ext {
	155	unsigned char t_bits1[1];
	156	unsigned char t_tq45[1];
	157	unsigned char t_tq01[1];
	158	unsigned char t_tq23[1];
	159	};
	160
	161	#define TIR_BITS1_FBITFIELD_BIG 0x80
	162	#define TIR_BITS1_FBITFIELD_LITTLE 0x01
	163
	164	#define TIR_BITS1_CONTINUED_BIG 0x40
	165	#define TIR_BITS1_CONTINUED_LITTLE 0x02
	166
	167	#define TIR_BITS1_BT_BIG 0x3F
	168	#define TIR_BITS1_BT_SH_BIG 0
	169	#define TIR_BITS1_BT_LITTLE 0xFC
	170	#define TIR_BITS1_BT_SH_LITTLE 2
	171
	172	#define TIR_BITS_TQ4_BIG 0xF0
	173	#define TIR_BITS_TQ4_SH_BIG 4
	174	#define TIR_BITS_TQ5_BIG 0x0F
	175	#define TIR_BITS_TQ5_SH_BIG 0
	176	#define TIR_BITS_TQ4_LITTLE 0x0F
	177	#define TIR_BITS_TQ4_SH_LITTLE 0
	178	#define TIR_BITS_TQ5_LITTLE 0xF0
	179	#define TIR_BITS_TQ5_SH_LITTLE 4
	180
	181	#define TIR_BITS_TQ0_BIG 0xF0
	182	#define TIR_BITS_TQ0_SH_BIG 4
	183	#define TIR_BITS_TQ1_BIG 0x0F
184	#define TIR_BITS_TQ1_SH_BIG 0
185	#define TIR_BITS_TQ0_LITTLE 0x0F
186	#define TIR_BITS_TQ0_SH_LITTLE 0
187	#define TIR_BITS_TQ1_LITTLE 0xF0
188	#define TIR_BITS_TQ1_SH_LITTLE 4
189
190	#define TIR_BITS_TQ2_BIG 0xF0
191	#define TIR_BITS_TQ2_SH_BIG 4
192	#define TIR_BITS_TQ3_BIG 0x0F
193	#define TIR_BITS_TQ3_SH_BIG 0
194	#define TIR_BITS_TQ2_LITTLE 0x0F
195	#define TIR_BITS_TQ2_SH_LITTLE 0
196	#define TIR_BITS_TQ3_LITTLE 0xF0
197	#define TIR_BITS_TQ3_SH_LITTLE 4
198
199	/* Relative symbol external record */
200
201	struct rndx_ext {
202	unsigned char r_bits[4];
203	};
204
205	#define RNDX_BITS0_RFD_SH_LEFT_BIG 4
206	#define RNDX_BITS1_RFD_BIG 0xF0
207	#define RNDX_BITS1_RFD_SH_BIG 4
208
209	#define RNDX_BITS0_RFD_SH_LEFT_LITTLE 0
210	#define RNDX_BITS1_RFD_LITTLE 0x0F
211	#define RNDX_BITS1_RFD_SH_LEFT_LITTLE 8
212
213	#define RNDX_BITS1_INDEX_BIG 0x0F
214	#define RNDX_BITS1_INDEX_SH_LEFT_BIG 16
215	#define RNDX_BITS2_INDEX_SH_LEFT_BIG 8
216	#define RNDX_BITS3_INDEX_SH_LEFT_BIG 0
217
218	#define RNDX_BITS1_INDEX_LITTLE 0xF0
219	#define RNDX_BITS1_INDEX_SH_LITTLE 4
220	#define RNDX_BITS2_INDEX_SH_LEFT_LITTLE 4
221	#define RNDX_BITS3_INDEX_SH_LEFT_LITTLE 12
222
223	/* Auxiliary symbol information external record */
224
225	union aux_ext {
226	struct tir_ext a_ti;
227	struct rndx_ext a_rndx;
228	unsigned char a_dnLow[4];
229	unsigned char a_dnHigh[4];
230	unsigned char a_isym[4];
231	unsigned char a_iss[4];
232	unsigned char a_width[4];
233	unsigned char a_count[4];
234	};
235
3f61fc96	236	#define AUX_GET_ANY(bigend, ax, field) \
838b5595	237	((bigend) ? bfd_getb32 ((ax)->field) : bfd_getl32 ((ax)->field))
3f61fc96 ILT	238
	239	#define AUX_GET_DNLOW(bigend, ax) AUX_GET_ANY ((bigend), (ax), a_dnLow)
	240	#define AUX_GET_DNHIGH(bigend, ax) AUX_GET_ANY ((bigend), (ax), a_dnHigh)
	241	#define AUX_GET_ISYM(bigend, ax) AUX_GET_ANY ((bigend), (ax), a_isym)
	242	#define AUX_GET_ISS(bigend, ax) AUX_GET_ANY ((bigend), (ax), a_iss)
	243	#define AUX_GET_WIDTH(bigend, ax) AUX_GET_ANY ((bigend), (ax), a_width)
	244	#define AUX_GET_COUNT(bigend, ax) AUX_GET_ANY ((bigend), (ax), a_count)
	245
	246	#define AUX_PUT_ANY(bigend, val, ax, field) \
	247	((bigend) \
777bb8e2 ILT	248	? (bfd_putb32 ((bfd_vma) (val), (ax)->field), 0) \
777bb8e2 ILT	249	: (bfd_putl32 ((bfd_vma) (val), (ax)->field), 0))
3f61fc96 ILT	250
	251	#define AUX_PUT_DNLOW(bigend, val, ax) \
	252	AUX_PUT_ANY ((bigend), (val), (ax), a_dnLow)
	253	#define AUX_PUT_DNHIGH(bigend, val, ax) \
	254	AUX_PUT_ANY ((bigend), (val), (ax), a_dnHigh)
	255	#define AUX_PUT_ISYM(bigend, val, ax) \
	256	AUX_PUT_ANY ((bigend), (val), (ax), a_isym)
	257	#define AUX_PUT_ISS(bigend, val, ax) \
	258	AUX_PUT_ANY ((bigend), (val), (ax), a_iss)
	259	#define AUX_PUT_WIDTH(bigend, val, ax) \
	260	AUX_PUT_ANY ((bigend), (val), (ax), a_width)
	261	#define AUX_PUT_COUNT(bigend, val, ax) \
	262	AUX_PUT_ANY ((bigend), (val), (ax), a_count)
	263
	264	/* Prototypes for the swapping functions. These require that sym.h be
	265	included before this file. */
	266
	267	extern void ecoff_swap_tir_in PARAMS ((int bigend, struct tir_ext , TIR ));
	268	extern void ecoff_swap_tir_out PARAMS ((int bigend, TIR , struct tir_ext ));
	269	extern void ecoff_swap_rndx_in PARAMS ((int bigend, struct rndx_ext *,
	270	RNDXR *));
	271	extern void ecoff_swap_rndx_out PARAMS ((int bigend, RNDXR *,
	272	struct rndx_ext *));
	273
777bb8e2 ILT	274	/******************** SWAPPING ********************/
	275
	276	/* The generic ECOFF code needs to be able to swap debugging
	277	information in and out in the specific format used by a particular
	278	ECOFF implementation. This structure provides the information
	279	needed to do this. */
	280
	281	struct ecoff_debug_swap
	282	{
	283	/* Symbol table magic number. */
	284	int sym_magic;
	285	/* Alignment of debugging information. E.g., 4. */
	286	bfd_size_type debug_align;
	287	/* Sizes of external symbolic information. */
	288	bfd_size_type external_hdr_size;
	289	bfd_size_type external_dnr_size;
	290	bfd_size_type external_pdr_size;
	291	bfd_size_type external_sym_size;
	292	bfd_size_type external_opt_size;
	293	bfd_size_type external_fdr_size;
	294	bfd_size_type external_rfd_size;
	295	bfd_size_type external_ext_size;
	296	/* Functions to swap in external symbolic data. */
	297	void (swap_hdr_in) PARAMS ((bfd , PTR, HDRR *));
	298	void (swap_dnr_in) PARAMS ((bfd , PTR, DNR *));
	299	void (swap_pdr_in) PARAMS ((bfd , PTR, PDR *));
	300	void (swap_sym_in) PARAMS ((bfd , PTR, SYMR *));
	301	void (swap_opt_in) PARAMS ((bfd , PTR, OPTR *));
	302	void (swap_fdr_in) PARAMS ((bfd , PTR, FDR *));
	303	void (swap_rfd_in) PARAMS ((bfd , PTR, RFDT *));
	304	void (swap_ext_in) PARAMS ((bfd , PTR, EXTR *));
	305	/* Functions to swap out external symbolic data. */
	306	void (swap_hdr_out) PARAMS ((bfd , const HDRR *, PTR));
	307	void (swap_dnr_out) PARAMS ((bfd , const DNR *, PTR));
	308	void (swap_pdr_out) PARAMS ((bfd , const PDR *, PTR));
	309	void (swap_sym_out) PARAMS ((bfd , const SYMR *, PTR));
	310	void (swap_opt_out) PARAMS ((bfd , const OPTR *, PTR));
	311	void (swap_fdr_out) PARAMS ((bfd , const FDR *, PTR));
	312	void (swap_rfd_out) PARAMS ((bfd , const RFDT *, PTR));
	313	void (swap_ext_out) PARAMS ((bfd , const EXTR *, PTR));
	314	/* As noted above, it so happens that the auxiliary type information
	315	has the same type and format for all known ECOFF targets. I don't
	316	see any reason that that should change, so at least for now the
	317	auxiliary swapping information is not in this table. */
	318	};
	319
	320	/******************** SYMBOLS ********************/
	321
	322	/* For efficiency, gdb deals directly with the unswapped symbolic
	323	information (that way it only takes the time to swap information
	324	that it really needs to read). gdb originally retrieved the
	325	information directly from the BFD backend information, but that
	326	strategy, besides being sort of ugly, does not work for MIPS ELF,
	327	which also uses ECOFF debugging information. This structure holds
	328	pointers to the (mostly) unswapped symbolic information. */
	329
	330	struct ecoff_debug_info
	331	{
	332	/* The swapped ECOFF symbolic header. */
	333	HDRR symbolic_header;
	334
	335	/* Pointers to the unswapped symbolic information. Note that the
	336	pointers to external structures point to different sorts of
	337	information on different ECOFF targets. The ecoff_debug_swap
338	structure provides the sizes of the structures and the functions
339	needed to swap the information in and out. These pointers are
340	all pointers to arrays, not single structures. They will be NULL
341	if there are no instances of the relevant structure. */
342	unsigned char *line;
343	PTR external_dnr; /* struct dnr_ext */
344	PTR external_pdr; /* struct pdr_ext */
345	PTR external_sym; /* struct sym_ext */
346	PTR external_opt; /* struct opt_ext */
347	union aux_ext *external_aux;
348	char *ss;
349	char *ssext;
350	PTR external_fdr; /* struct fdr_ext */
351	PTR external_rfd; /* struct rfd_ext */
352	PTR external_ext; /* struct ext_ext */
353
60ee38e9 ILT	354	/* When we are linking, the above pointers point to growing buffers.
	355	This set of pointers point to the end of the buffers. */
	356	unsigned char *line_end;
	357	PTR external_dnr_end; /* struct dnr_ext */
	358	PTR external_pdr_end; /* struct pdr_ext */
	359	PTR external_sym_end; /* struct sym_ext */
	360	PTR external_opt_end; /* struct opt_ext */
	361	union aux_ext *external_aux_end;
	362	char *ss_end;
	363	char *ssext_end;
	364	PTR external_fdr_end; /* struct fdr_ext */
	365	PTR external_rfd_end; /* struct rfd_ext */
	366	PTR external_ext_end; /* struct ext_ext */
	367
	368	/* When linking, this field is set to the base FDR index for an
	369	input BFD in the output FDR information, and is used when writing
	370	out the xternal symbols. */
	371	bfd_size_type ifdbase;
	372
777bb8e2 ILT	373	/* The swapped FDR information. Currently this is never NULL, but
	374	code using this structure should probably double-check in case
	375	this changes in the future. This is a pointer to an array, not a
	376	single structure. */
	377	FDR *fdr;
	378	};
	379
3f61fc96	380	#endif /* ! defined (ECOFF_H) */