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Diffstat (limited to 'include/coff/ecoff.h')
| -rw-r--r-- | include/coff/ecoff.h | 437 |
1 files changed, 0 insertions, 437 deletions
diff --git a/include/coff/ecoff.h b/include/coff/ecoff.h deleted file mode 100644 index 076fdf5be..000000000 --- a/include/coff/ecoff.h +++ /dev/null @@ -1,437 +0,0 @@ -/* Generic ECOFF support. - This does not include symbol information, found in sym.h and - symconst.h. - - Copyright 2001 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#ifndef ECOFF_H -#define ECOFF_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 -#define ALPHA_MAGIC_BSD 0x185 - -/* 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" -#define _GOT ".got" -#define _HASH ".hash" -#define _DYNSYM ".dynsym" -#define _DYNSTR ".dynstr" -#define _RELDYN ".rel.dyn" -#define _CONFLIC ".conflic" -#define _COMMENT ".comment" -#define _LIBLIST ".liblist" -#define _DYNAMIC ".dynamic" -#define _RCONST ".rconst" - -/* ECOFF uses some additional section flags. */ -#define STYP_RDATA 0x100 -#define STYP_SDATA 0x200 -#define STYP_SBSS 0x400 -#define STYP_GOT 0x1000 -#define STYP_DYNAMIC 0x2000 -#define STYP_DYNSYM 0x4000 -#define STYP_RELDYN 0x8000 -#define STYP_DYNSTR 0x10000 -#define STYP_HASH 0x20000 -#define STYP_LIBLIST 0x40000 -#define STYP_CONFLIC 0x100000 -#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_LIB 0x40000000 -#define STYP_ECOFF_INIT 0x80000000 -#define STYP_OTHER_LOAD (STYP_ECOFF_INIT | STYP_ECOFF_FINI) - -/* extended section types */ -#define STYP_COMMENT 0x2100000 -#define STYP_RCONST 0x2200000 -#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" - -/* 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 RELOC_SECTION_RCONST 15 - -#define NUM_RELOC_SECTIONS 16 - -/********************** 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 ((unsigned int) 0x80) -#define TIR_BITS1_FBITFIELD_LITTLE ((unsigned int) 0x01) - -#define TIR_BITS1_CONTINUED_BIG ((unsigned int) 0x40) -#define TIR_BITS1_CONTINUED_LITTLE ((unsigned int) 0x02) - -#define TIR_BITS1_BT_BIG ((unsigned int) 0x3F) -#define TIR_BITS1_BT_SH_BIG 0 -#define TIR_BITS1_BT_LITTLE ((unsigned int) 0xFC) -#define TIR_BITS1_BT_SH_LITTLE 2 - -#define TIR_BITS_TQ4_BIG ((unsigned int) 0xF0) -#define TIR_BITS_TQ4_SH_BIG 4 -#define TIR_BITS_TQ5_BIG ((unsigned int) 0x0F) -#define TIR_BITS_TQ5_SH_BIG 0 -#define TIR_BITS_TQ4_LITTLE ((unsigned int) 0x0F) -#define TIR_BITS_TQ4_SH_LITTLE 0 -#define TIR_BITS_TQ5_LITTLE ((unsigned int) 0xF0) -#define TIR_BITS_TQ5_SH_LITTLE 4 - -#define TIR_BITS_TQ0_BIG ((unsigned int) 0xF0) -#define TIR_BITS_TQ0_SH_BIG 4 -#define TIR_BITS_TQ1_BIG ((unsigned int) 0x0F) -#define TIR_BITS_TQ1_SH_BIG 0 -#define TIR_BITS_TQ0_LITTLE ((unsigned int) 0x0F) -#define TIR_BITS_TQ0_SH_LITTLE 0 -#define TIR_BITS_TQ1_LITTLE ((unsigned int) 0xF0) -#define TIR_BITS_TQ1_SH_LITTLE 4 - -#define TIR_BITS_TQ2_BIG ((unsigned int) 0xF0) -#define TIR_BITS_TQ2_SH_BIG 4 -#define TIR_BITS_TQ3_BIG ((unsigned int) 0x0F) -#define TIR_BITS_TQ3_SH_BIG 0 -#define TIR_BITS_TQ2_LITTLE ((unsigned int) 0x0F) -#define TIR_BITS_TQ2_SH_LITTLE 0 -#define TIR_BITS_TQ3_LITTLE ((unsigned int) 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 ((unsigned int) 0xF0) -#define RNDX_BITS1_RFD_SH_BIG 4 - -#define RNDX_BITS0_RFD_SH_LEFT_LITTLE 0 -#define RNDX_BITS1_RFD_LITTLE ((unsigned int) 0x0F) -#define RNDX_BITS1_RFD_SH_LEFT_LITTLE 8 - -#define RNDX_BITS1_INDEX_BIG ((unsigned int) 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 ((unsigned int) 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) - -/********************** 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. These - fields are also used by the assembler to output ECOFF debugging - information. */ - 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 */ - - /* These fields are used when linking. They may disappear at some - point. */ - char *ssext_end; - PTR external_ext_end; - - /* When linking, this field holds a mapping from the input FDR - numbers to the output numbers, and is used when writing out the - external symbols. It is NULL if no mapping is required. */ - RFDT *ifdmap; - - /* 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; - - /* When relaxing MIPS embedded PIC code, we may need to adjust - symbol values when they are output. This is a linked list of - structures indicating how values should be adjusted. There is no - requirement that the entries be in any order, or that they not - overlap. This field is normally NULL, in which case no - adjustments need to be made. */ - struct ecoff_value_adjust *adjust; -}; - -/* This structure describes how to adjust symbol values when - outputting MIPS embedded PIC code. These adjustments only apply to - the internal symbols, as the external symbol values will come from - the hash table and have already been adjusted. */ - -struct ecoff_value_adjust -{ - /* Next entry on adjustment list. */ - struct ecoff_value_adjust *next; - /* Starting VMA of adjustment. This is the VMA in the ECOFF file, - not the offset from the start of the section. Thus it should - indicate a particular section. */ - bfd_vma start; - /* Ending VMA of adjustment. */ - bfd_vma end; - /* Adjustment. This should be added to the value of the symbol, or - FDR. This is zero for the last entry in the array. */ - long adjust; -}; - -/* These structures are used by the ECOFF find_nearest_line function. */ - -struct ecoff_fdrtab_entry -{ - /* Base address in .text of this FDR. */ - bfd_vma base_addr; - FDR *fdr; -}; - -struct ecoff_find_line -{ - /* Allocated memory to hold function and file names. */ - char *find_buffer; - - /* FDR table, sorted by address: */ - long fdrtab_len; - struct ecoff_fdrtab_entry *fdrtab; - - /* Cache entry for most recently found line information. The sect - field is NULL if this cache does not contain valid information. */ - struct - { - asection *sect; - bfd_vma start; - bfd_vma stop; - const char *filename; - const char *functionname; - unsigned int line_num; - } cache; -}; - -/********************** 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 *)); - void (*swap_tir_in) PARAMS ((int, const struct tir_ext *, TIR *)); - void (*swap_rndx_in) PARAMS ((int, const struct rndx_ext *, RNDXR *)); - /* 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)); - void (*swap_tir_out) PARAMS ((int, const TIR *, struct tir_ext *)); - void (*swap_rndx_out) PARAMS ((int, const RNDXR *, struct rndx_ext *)); - /* Function to read symbol data and set up pointers in - ecoff_debug_info structure. The section argument is used for - ELF, not straight ECOFF. */ - boolean (*read_debug_info) PARAMS ((bfd *, asection *, - struct ecoff_debug_info *)); -}; - -#endif /* ! defined (ECOFF_H) */ |