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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
-
- /* 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. 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;
- };
-
- #endif /* ! defined (ECOFF_H) */
-