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Fri Jan 15 18:17:00 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com)

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* ecoff-ext.h: Added prototypes for new ECOFF swapping functions.
	(opt_ext): New structure.
	* mips.h (ZMAGIC): Defined to be 0413.
	(_LIB): Defined to be ".lib"
	(external_reloc): MIPS ECOFF relocs are only 8 bytes.  Added
	macros to aid in swapping.
This commit is contained in:
Ian Lance Taylor 1993-01-15 23:20:27 +00:00
parent 2aedd91ee1
commit 9dcfbb6781
3 changed files with 69 additions and 4 deletions
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9
include/coff/ChangeLog
View File

@ -1,3 +1,12 @@
Fri Jan 15 18:17:00 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* ecoff-ext.h: Added prototypes for new ECOFF swapping functions.
(opt_ext): New structure.
* mips.h (ZMAGIC): Defined to be 0413.
(_LIB): Defined to be ".lib"
(external_reloc): MIPS ECOFF relocs are only 8 bytes. Added
macros to aid in swapping.
Fri Jan 8 16:19:26 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* ecoff-ext.h: Added prototypes for ECOFF swapping functions.

32
include/coff/ecoff-ext.h
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@ -300,14 +300,46 @@ struct rfd_ext {
unsigned char rfd[4];
};
/* Optimizer symbol external record */
struct opt_ext {
unsigned char o_bits1[1];
unsigned char o_bits2[1];
unsigned char o_bits3[1];
unsigned char o_bits4[1];
struct rndx_ext o_rndx;
unsigned char o_offset[4];
};
#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
/* Prototypes for the swapping functions. These require that sym.h be
included before this file. */
extern void ecoff_swap_hdr_in PARAMS ((bfd *, struct hdr_ext *, HDRR *));
extern void ecoff_swap_hdr_out PARAMS ((bfd *, HDRR *, struct hdr_ext *));
extern void ecoff_swap_fdr_in PARAMS ((bfd *, struct fdr_ext *, FDR *));
extern void ecoff_swap_fdr_out PARAMS ((bfd *, FDR *, struct fdr_ext *));
extern void ecoff_swap_pdr_in PARAMS ((bfd *, struct pdr_ext *, PDR *));
extern void ecoff_swap_pdr_out PARAMS ((bfd *, PDR *, struct pdr_ext *));
extern void ecoff_swap_sym_in PARAMS ((bfd *, struct sym_ext *, SYMR *));
extern void ecoff_swap_sym_out PARAMS ((bfd *, SYMR *, struct sym_ext *));
extern void ecoff_swap_ext_in PARAMS ((bfd *, struct ext_ext *, EXTR *));
extern void ecoff_swap_ext_out PARAMS ((bfd *, EXTR *, struct ext_ext *));
extern void ecoff_swap_dnr_in PARAMS ((bfd *, struct dnr_ext *, DNR *));
extern void ecoff_swap_dnr_out PARAMS ((bfd *, DNR *, struct dnr_ext *));
extern void ecoff_swap_tir_in PARAMS ((int bigend, struct tir_ext *, TIR *));
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 *));
extern void ecoff_swap_rfd_in PARAMS ((bfd *, struct rfd_ext *, RFDT *));
extern void ecoff_swap_rfd_out PARAMS ((bfd *, RFDT *, struct rfd_ext *));
extern void ecoff_swap_opt_in PARAMS ((bfd *, struct opt_ext *, OPTR *));
extern void ecoff_swap_opt_out PARAMS ((bfd *, OPTR *, struct opt_ext *));

32
include/coff/mips.h
View File

@ -47,6 +47,7 @@ typedef struct external_aouthdr
#define AOUTSZ (sizeof(AOUTHDR))
#define ZMAGIC 0413 /* demand load format, eg normal ld output */
/********************** SECTION HEADER **********************/
@ -77,6 +78,7 @@ struct external_scnhdr {
#define _SBSS ".sbss"
#define _LIT4 ".lit4"
#define _LIT8 ".lit8"
#define _LIB ".lib"
#define DEFAULT_DATA_SECTION_ALIGNMENT 4
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
@ -98,16 +100,38 @@ struct external_scnhdr {
struct external_reloc {
unsigned char r_vaddr[4];
unsigned char r_symndx[4];
unsigned char r_type[2];
unsigned char pad[2];
unsigned char r_bits[4];
};
/* MIPS ECOFF uses a packed 8 byte format for relocs. These constants
are used to unpack the r_bits field. FIXME: Check these on a big
endian machine. */
#define RELOC_BITS0_SYMNDX_SH_LEFT_BIG 16
#define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE 0
#define RELOC_BITS1_SYMNDX_SH_LEFT_BIG 8
#define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE 8
#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG 0
#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE 16
#define RELOC_BITS3_TYPE_BIG 0x3C
#define RELOC_BITS3_TYPE_SH_BIG 2
#define RELOC_BITS3_TYPE_LITTLE 0x78
#define RELOC_BITS3_TYPE_SH_LITTLE 3
#define RELOC_BITS3_EXTERN_BIG 0x01
#define RELOC_BITS3_EXTERN_LITTLE 0x80
/* We store the extern field in the r_offset field of a struct
internal_reloc. FIXME: Do this more sensibly. */
#define r_extern r_offset
/* Relevent values for r_type and ecoff. Would someone please document them */
#define RELOC struct external_reloc
#define RELSZ 12
#define RELSZ 8
/* gcc uses mips-tfile to output type information in special stabs
entries. These must match the corresponding definition in