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-rw-r--r--include/coff/ecoff.h421
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diff --git a/include/coff/ecoff.h b/include/coff/ecoff.h
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+++ b/include/coff/ecoff.h
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+#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
+#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) */