diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/coff/internal.h | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/include/coff/internal.h b/include/coff/internal.h new file mode 100644 index 0000000..62820df --- /dev/null +++ b/include/coff/internal.h @@ -0,0 +1,446 @@ +/* Internal format of COFF object file data structures, for GNU BFD. + This file is part of BFD, the Binary File Descriptor library. */ + +/* First, make "signed char" work, even on old compilers. */ +#ifndef signed +#ifndef __STDC__ +#define signed /**/ +#endif +#endif + +/********************** FILE HEADER **********************/ +struct internal_filehdr +{ + unsigned short f_magic; /* magic number */ + unsigned short f_nscns; /* number of sections */ + long f_timdat; /* time & date stamp */ + long f_symptr; /* file pointer to symtab */ + long f_nsyms; /* number of symtab entries */ + unsigned short f_opthdr; /* sizeof(optional hdr) */ + unsigned short f_flags; /* flags */ +}; + +/* Bits for f_flags: + * F_RELFLG relocation info stripped from file + * F_EXEC file is executable (no unresolved external references) + * F_LNNO line numbers stripped from file + * F_LSYMS local symbols stripped from file + * F_AR16WR file is 16-bit little-endian + * F_AR32WR file is 32-bit little-endian + * F_AR32W file is 32-bit big-endian + * F_DYNLOAD rs/6000 aix: dynamically loadable w/imports & exports + * F_SHROBJ rs/6000 aix: file is a shared object + */ + +#define F_RELFLG (0x0001) +#define F_EXEC (0x0002) +#define F_LNNO (0x0004) +#define F_LSYMS (0x0008) +#define F_AR16WR (0x0080) +#define F_AR32WR (0x0100) +#define F_AR32W (0x0200) +#define F_DYNLOAD (0x1000) +#define F_SHROBJ (0x2000) + +/********************** AOUT "OPTIONAL HEADER" **********************/ +struct internal_aouthdr { + short magic; /* type of file */ + short vstamp; /* version stamp */ + unsigned long tsize; /* text size in bytes, padded to FW bdry*/ + unsigned long dsize; /* initialized data " " */ + unsigned long bsize; /* uninitialized data " " */ + unsigned long entry; /* entry pt. */ + unsigned long text_start; /* base of text used for this file */ + unsigned long data_start; /* base of data used for this file */ + + /* i960 stuff */ + unsigned long tagentries; /* number of tag entries to follow */ + + /* RS/6000 stuff */ + unsigned long o_toc; /* address of TOC */ + short o_snentry; /* section number for entry point */ + short o_sntext; /* section number for text */ + short o_sndata; /* section number for data */ + short o_sntoc; /* section number for toc */ + short o_snloader; /* section number for loader section */ + short o_snbss; /* section number for bss */ + short o_algntext; /* max alignment for text */ + short o_algndata; /* max alignment for data */ + short o_modtype; /* Module type field, 1R,RE,RO */ + unsigned long o_maxstack; /* max stack size allowed. */ +}; + +/********************** STORAGE CLASSES **********************/ + +#define C_EFCN -1 /* physical end of function */ +#define C_NULL 0 +#define C_AUTO 1 /* automatic variable */ +#define C_EXT 2 /* external symbol */ +#define C_STAT 3 /* static */ +#define C_REG 4 /* register variable */ +#define C_EXTDEF 5 /* external definition */ +#define C_LABEL 6 /* label */ +#define C_ULABEL 7 /* undefined label */ +#define C_MOS 8 /* member of structure */ +#define C_ARG 9 /* function argument */ +#define C_STRTAG 10 /* structure tag */ +#define C_MOU 11 /* member of union */ +#define C_UNTAG 12 /* union tag */ +#define C_TPDEF 13 /* type definition */ +#define C_USTATIC 14 /* undefined static */ +#define C_ENTAG 15 /* enumeration tag */ +#define C_MOE 16 /* member of enumeration */ +#define C_REGPARM 17 /* register parameter */ +#define C_FIELD 18 /* bit field */ +#define C_AUTOARG 19 /* auto argument */ +#define C_LASTENT 20 /* dummy entry (end of block) */ +#define C_BLOCK 100 /* ".bb" or ".eb" */ +#define C_FCN 101 /* ".bf" or ".ef" */ +#define C_EOS 102 /* end of structure */ +#define C_FILE 103 /* file name */ +#define C_LINE 104 /* line # reformatted as symbol table entry */ +#define C_ALIAS 105 /* duplicate tag */ +#define C_HIDDEN 106 /* ext symbol in dmert public lib */ + + /* New storage classes for 80960 */ + +/* C_LEAFPROC is obsolete. Use C_LEAFEXT or C_LEAFSTAT */ +#define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */ + +#define C_SCALL 107 /* Procedure reachable via system call */ +#define C_LEAFEXT 108 /* External leaf */ +#define C_LEAFSTAT 113 /* Static leaf */ +#define C_OPTVAR 109 /* Optimized variable */ +#define C_DEFINE 110 /* Preprocessor #define */ +#define C_PRAGMA 111 /* Advice to compiler or linker */ +#define C_SEGMENT 112 /* 80960 segment name */ + + /* New storage classes for RS/6000 */ +#define C_HIDEXT 107 /* Un-named external symbol */ +#define C_BINCL 108 /* Marks beginning of include file */ +#define C_EINCL 109 /* Marks ending of include file */ + + /* storage classes for stab symbols for RS/6000 */ +#define C_GSYM ((signed char)0x80) +#define C_LSYM ((signed char)0x81) +#define C_PSYM ((signed char)0x82) +#define C_RSYM ((signed char)0x83) +#define C_RPSYM ((signed char)0x84) +#define C_STSYM ((signed char)0x85) +#define C_TCSYM ((signed char)0x86) +#define C_BCOMM ((signed char)0x87) +#define C_ECOML ((signed char)0x88) +#define C_ECOMM ((signed char)0x89) +#define C_DECL ((signed char)0x8c) +#define C_ENTRY ((signed char)0x8d) +#define C_FUN ((signed char)0x8e) +#define C_BSTAT ((signed char)0x8f) +#define C_ESTAT ((signed char)0x90) + +/********************** SECTION HEADER **********************/ +struct internal_scnhdr { + char s_name[8]; /* section name */ + long s_paddr; /* physical address, aliased s_nlib */ + long s_vaddr; /* virtual address */ + long s_size; /* section size */ + long s_scnptr; /* file ptr to raw data for section */ + long s_relptr; /* file ptr to relocation */ + long s_lnnoptr; /* file ptr to line numbers */ + unsigned long s_nreloc; /* number of relocation entries */ + unsigned long s_nlnno; /* number of line number entries*/ + long s_flags; /* flags */ +#ifdef I960 + long s_align; +#endif +}; + + +/* + * s_flags "type" + */ +#define STYP_REG (0x0000) /* "regular": allocated, relocated, loaded */ +#define STYP_DSECT (0x0001) /* "dummy": relocated only*/ +#define STYP_NOLOAD (0x0002) /* "noload": allocated, relocated, not loaded */ +#define STYP_GROUP (0x0004) /* "grouped": formed of input sections */ +#define STYP_PAD (0x0008) /* "padding": not allocated, not relocated, loaded */ +#define STYP_COPY (0x0010) /* "copy": for decision function used by field update; not allocated, not relocated, + loaded; reloc & lineno entries processed normally */ +#define STYP_TEXT (0x0020) /* section contains text only */ +#define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile + will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will + update all process invocations. */ +#define STYP_DATA (0x0040) /* section contains data only */ +#define STYP_BSS (0x0080) /* section contains bss only */ +#define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */ +#define STYP_INFO (0x0200) /* comment: not allocated not relocated, not loaded */ +#define STYP_OVER (0x0400) /* overlay: relocated not allocated or loaded */ +#define STYP_LIB (0x0800) /* for .lib: same as INFO */ +#define STYP_MERGE (0x2000) /* merge section -- combines with text, data or bss sections only */ +#define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions wherever padding is necessary and there is a + word of contiguous bytes beginning on a word boundary. */ +/********************** LINE NUMBERS **********************/ + +/* 1 line number entry for every "breakpointable" source line in a section. + * Line numbers are grouped on a per function basis; first entry in a function + * grouping will have l_lnno = 0 and in place of physical address will be the + * symbol table index of the function name. + */ + +struct internal_lineno { + union { + long l_symndx; /* function name symbol index, iff l_lnno == 0*/ + long l_paddr; /* (physical) address of line number */ + } l_addr; + unsigned long l_lnno; /* line number */ +}; + + +/********************** SYMBOLS **********************/ + +#define SYMNMLEN 8 /* # characters in a symbol name */ +#define FILNMLEN 14 /* # characters in a file name */ +#define DIMNUM 4 /* # array dimensions in auxiliary entry */ + +struct internal_syment { + union { + char _n_name[SYMNMLEN]; /* old COFF version */ + struct { + long _n_zeroes; /* new == 0 */ + long _n_offset; /* offset into string table */ + } _n_n; + char *_n_nptr[2]; /* allows for overlaying */ + } _n; + long n_value; /* value of symbol */ + short n_scnum; /* section number */ + unsigned short n_flags; /* copy of flags from filhdr */ + unsigned short n_type; /* type and derived type */ + signed char n_sclass; /* storage class */ + char n_numaux; /* number of aux. entries */ +}; +#define n_name _n._n_name +#define n_zeroes _n._n_n._n_zeroes +#define n_offset _n._n_n._n_offset + + +/* Relocatable symbols have number of the section in which they are defined, + or one of the following: */ + +#define N_UNDEF ((short)0) /* undefined symbol */ +#define N_ABS ((short)-1) /* value of symbol is absolute */ +#define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */ +#define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */ +#define P_TV ((short)-4) /* indicates symbol needs postload transfer vector*/ + +/* + * Type of a symbol, in low N bits of the word + */ +#define T_NULL 0 +#define T_VOID 1 /* function argument (only used by compiler) */ +#define T_CHAR 2 /* character */ +#define T_SHORT 3 /* short integer */ +#define T_INT 4 /* integer */ +#define T_LONG 5 /* long integer */ +#define T_FLOAT 6 /* floating point */ +#define T_DOUBLE 7 /* double word */ +#define T_STRUCT 8 /* structure */ +#define T_UNION 9 /* union */ +#define T_ENUM 10 /* enumeration */ +#define T_MOE 11 /* member of enumeration*/ +#define T_UCHAR 12 /* unsigned character */ +#define T_USHORT 13 /* unsigned short */ +#define T_UINT 14 /* unsigned integer */ +#define T_ULONG 15 /* unsigned long */ +#define T_LNGDBL 16 /* long double */ + +/* + * derived types, in n_type +*/ +#define DT_NON (0) /* no derived type */ +#define DT_PTR (1) /* pointer */ +#define DT_FCN (2) /* function */ +#define DT_ARY (3) /* array */ + +#define BTYPE(x) ((x) & N_BTMASK) + +#define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) +#define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) +#define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) +#define ISTAG(x) ((x)==C_STRTAG||(x)==C_UNTAG||(x)==C_ENTAG) +#define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) + + +union internal_auxent +{ + struct { + + union { + long l; /* str, un, or enum tag indx */ + struct coff_ptr_struct *p; + } x_tagndx; + + union { + struct { + unsigned short x_lnno; /* declaration line number */ + unsigned short x_size; /* str/union/array size */ + } x_lnsz; + long x_fsize; /* size of function */ + } x_misc; + + union { + struct { /* if ISFCN, tag, or .bb */ + long x_lnnoptr; /* ptr to fcn line # */ + union { /* entry ndx past block end */ + long l; + struct coff_ptr_struct *p; + } x_endndx; + } x_fcn; + + struct { /* if ISARY, up to 4 dimen. */ + unsigned short x_dimen[DIMNUM]; + } x_ary; + } x_fcnary; + + unsigned short x_tvndx; /* tv index */ + } x_sym; + + union { + char x_fname[FILNMLEN]; + struct { + long x_zeroes; + long x_offset; + } x_n; + } x_file; + + struct { + long x_scnlen; /* section length */ + unsigned short x_nreloc; /* # relocation entries */ + unsigned short x_nlinno; /* # line numbers */ + } x_scn; + + struct { + long x_tvfill; /* tv fill value */ + unsigned short x_tvlen; /* length of .tv */ + unsigned short x_tvran[2]; /* tv range */ + } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ + + /****************************************** + * RS/6000-specific auxent - last auxent for every external symbol + ******************************************/ + struct { + long x_scnlen; /* csect length */ + long x_parmhash; /* parm type hash index */ + unsigned short x_snhash; /* sect num with parm hash */ + unsigned char x_smtyp; /* symbol align and type */ + /* 0-4 - Log 2 of alignment */ + /* 5-7 - symbol type */ + unsigned char x_smclas; /* storage mapping class */ + long x_stab; /* dbx stab info index */ + unsigned short x_snstab; /* sect num with dbx stab */ + } x_csect; /* csect definition information */ + +/* x_smtyp values: */ + +#define SMTYP_ALIGN(x) ((x) >> 3) /* log2 of alignment */ +#define SMTYP_SMTYP(x) ((x) & 0x7) /* symbol type */ +/* Symbol type values: */ +#define XTY_ER 0 /* External reference */ +#define XTY_SD 1 /* Csect definition */ +#define XTY_LD 2 /* Label definition */ +#define XTY_CM 3 /* .BSS */ +#define XTY_EM 4 /* Error message */ +#define XTY_US 5 /* "Reserved for internal use" */ + +/* x_smclas values: */ + +#define XMC_PR 0 /* Read-only program code */ +#define XMC_RO 1 /* Read-only constant */ +#define XMC_DB 2 /* Read-only debug dictionary table */ +#define XMC_TC 3 /* Read-write general TOC entry */ +#define XMC_UA 4 /* Read-write unclassified */ +#define XMC_RW 5 /* Read-write data */ +#define XMC_GL 6 /* Read-only global linkage */ +#define XMC_XO 7 /* Read-only extended operation (simulated insn) */ +#define XMC_SV 8 /* Read-only supervisor call */ +#define XMC_BS 9 /* Read-write BSS */ +#define XMC_DS 10 /* Read-write descriptor csect */ +#define XMC_UC 11 /* Read-write unnamed Fortran common */ +#define XMC_TI 12 /* Read-only traceback index csect */ +#define XMC_TB 13 /* Read-only traceback table csect */ +/* 14 ??? */ +#define XMC_TC0 15 /* Read-write TOC anchor for TOC addressability */ + + + /****************************************** + * I960-specific *2nd* aux. entry formats + ******************************************/ + struct { + /* This is a very old typo that keeps getting propagated. */ +#define x_stdindx x_stindx + long x_stindx; /* sys. table entry */ + } x_sc; /* system call entry */ + + struct { + unsigned long x_balntry; /* BAL entry point */ + } x_bal; /* BAL-callable function */ + + struct { + unsigned long x_timestamp; /* time stamp */ + char x_idstring[20]; /* producer identity string */ + } x_ident; /* Producer ident info */ + +}; + +/********************** RELOCATION DIRECTIVES **********************/ + +struct internal_reloc +{ + long r_vaddr; /* Virtual address of reference */ + long r_symndx; /* Index into symbol table */ + unsigned short r_type; /* Relocation type */ + +#if RS6000COFF_C + unsigned char r_size; +#endif + + unsigned short r_offset; + +}; + +#define R_RELBYTE 017 +#define R_RELWORD 020 +#define R_PCRBYTE 022 +#define R_PCRWORD 023 +#define R_PCRLONG 024 + +#define R_DIR32 06 +#define R_PCLONG 020 +#define R_RELBYTE 017 +#define R_RELWORD 020 + +#define R_PCRBYTE 022 +#define R_PCRWORD 023 +#define R_PCRLONG 024 + + +#define R_PCR16L 128 +#define R_PCR26L 129 +#define R_VRT16 130 +#define R_HVRT16 131 +#define R_LVRT16 132 +#define R_VRT32 133 +#define R_RELLONG (0x11) /* Direct 32-bit relocation */ +#define R_IPRSHORT (0x18) +#define R_IPRMED (0x19) /* 24-bit ip-relative relocation */ +#define R_IPRLONG (0x1a) +#define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */ +#define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */ +#define R_GETSEG (0x1d) +#define R_GETPA (0x1e) +#define R_TAGWORD (0x1f) +#define R_JUMPTARG 0x20 /* strange 29k 00xx00xx reloc */ +#define R_MOVB1 0x41 /* Special h8 16bit or 8 bit reloc for mov.b */ +#define R_MOVB2 0x42 /* Special h8 opcode for 8bit which could + be 16 */ +#define R_JMP1 0x43 /* Special h8 16bit jmp which could be + pcrel */ +#define R_JMP2 0x44 /* a branch which used to be a jmp */ |