539 lines
18 KiB
C
539 lines
18 KiB
C
/* Internal format of COFF object file data structures, for GNU BFD.
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This file is part of BFD, the Binary File Descriptor library. */
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/* First, make "signed char" work, even on old compilers. */
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#ifndef signed
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#ifndef __STDC__
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#define signed /**/
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#endif
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#endif
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/********************** FILE HEADER **********************/
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struct internal_filehdr
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{
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unsigned short f_magic; /* magic number */
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unsigned short f_nscns; /* number of sections */
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long f_timdat; /* time & date stamp */
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bfd_vma f_symptr; /* file pointer to symtab */
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long f_nsyms; /* number of symtab entries */
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unsigned short f_opthdr; /* sizeof(optional hdr) */
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unsigned short f_flags; /* flags */
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};
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/* Bits for f_flags:
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* F_RELFLG relocation info stripped from file
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* F_EXEC file is executable (no unresolved external references)
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* F_LNNO line numbers stripped from file
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* F_LSYMS local symbols stripped from file
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* F_AR16WR file is 16-bit little-endian
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* F_AR32WR file is 32-bit little-endian
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* F_AR32W file is 32-bit big-endian
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* F_DYNLOAD rs/6000 aix: dynamically loadable w/imports & exports
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* F_SHROBJ rs/6000 aix: file is a shared object
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*/
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#define F_RELFLG (0x0001)
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#define F_EXEC (0x0002)
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#define F_LNNO (0x0004)
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#define F_LSYMS (0x0008)
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#define F_AR16WR (0x0080)
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#define F_AR32WR (0x0100)
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#define F_AR32W (0x0200)
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#define F_DYNLOAD (0x1000)
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#define F_SHROBJ (0x2000)
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/********************** AOUT "OPTIONAL HEADER" **********************/
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struct internal_aouthdr
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{
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short magic; /* type of file */
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short vstamp; /* version stamp */
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bfd_vma tsize; /* text size in bytes, padded to FW bdry*/
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bfd_vma dsize; /* initialized data " " */
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bfd_vma bsize; /* uninitialized data " " */
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bfd_vma entry; /* entry pt. */
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bfd_vma text_start; /* base of text used for this file */
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bfd_vma data_start; /* base of data used for this file */
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/* i960 stuff */
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unsigned long tagentries; /* number of tag entries to follow */
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/* RS/6000 stuff */
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unsigned long o_toc; /* address of TOC */
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short o_snentry; /* section number for entry point */
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short o_sntext; /* section number for text */
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short o_sndata; /* section number for data */
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short o_sntoc; /* section number for toc */
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short o_snloader; /* section number for loader section */
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short o_snbss; /* section number for bss */
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short o_algntext; /* max alignment for text */
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short o_algndata; /* max alignment for data */
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short o_modtype; /* Module type field, 1R,RE,RO */
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unsigned long o_maxstack; /* max stack size allowed. */
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/* ECOFF stuff */
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bfd_vma bss_start; /* Base of bss section. */
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bfd_vma gp_value; /* GP register value. */
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unsigned long gprmask; /* General registers used. */
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unsigned long cprmask[4]; /* Coprocessor registers used. */
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unsigned long fprmask; /* Floating pointer registers used. */
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/* Apollo stuff */
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long o_inlib;
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long o_sri;
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long vid[2];
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};
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/********************** STORAGE CLASSES **********************/
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/* This used to be defined as -1, but now n_sclass is unsigned. */
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#define C_EFCN 0xff /* physical end of function */
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#define C_NULL 0
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#define C_AUTO 1 /* automatic variable */
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#define C_EXT 2 /* external symbol */
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#define C_STAT 3 /* static */
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#define C_REG 4 /* register variable */
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#define C_EXTDEF 5 /* external definition */
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#define C_LABEL 6 /* label */
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#define C_ULABEL 7 /* undefined label */
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#define C_MOS 8 /* member of structure */
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#define C_ARG 9 /* function argument */
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#define C_STRTAG 10 /* structure tag */
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#define C_MOU 11 /* member of union */
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#define C_UNTAG 12 /* union tag */
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#define C_TPDEF 13 /* type definition */
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#define C_USTATIC 14 /* undefined static */
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#define C_ENTAG 15 /* enumeration tag */
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#define C_MOE 16 /* member of enumeration */
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#define C_REGPARM 17 /* register parameter */
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#define C_FIELD 18 /* bit field */
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#define C_AUTOARG 19 /* auto argument */
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#define C_LASTENT 20 /* dummy entry (end of block) */
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#define C_BLOCK 100 /* ".bb" or ".eb" */
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#define C_FCN 101 /* ".bf" or ".ef" */
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#define C_EOS 102 /* end of structure */
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#define C_FILE 103 /* file name */
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#define C_LINE 104 /* line # reformatted as symbol table entry */
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#define C_ALIAS 105 /* duplicate tag */
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#define C_HIDDEN 106 /* ext symbol in dmert public lib */
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/* New storage classes for 80960 */
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/* C_LEAFPROC is obsolete. Use C_LEAFEXT or C_LEAFSTAT */
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#define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */
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#define C_SCALL 107 /* Procedure reachable via system call */
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#define C_LEAFEXT 108 /* External leaf */
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#define C_LEAFSTAT 113 /* Static leaf */
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#define C_OPTVAR 109 /* Optimized variable */
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#define C_DEFINE 110 /* Preprocessor #define */
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#define C_PRAGMA 111 /* Advice to compiler or linker */
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#define C_SEGMENT 112 /* 80960 segment name */
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/* Storage classes for m88k */
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#define C_SHADOW 107 /* shadow symbol */
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#define C_VERSION 108 /* coff version symbol */
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/* New storage classes for RS/6000 */
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#define C_HIDEXT 107 /* Un-named external symbol */
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#define C_BINCL 108 /* Marks beginning of include file */
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#define C_EINCL 109 /* Marks ending of include file */
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/* storage classes for stab symbols for RS/6000 */
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#define C_GSYM (0x80)
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#define C_LSYM (0x81)
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#define C_PSYM (0x82)
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#define C_RSYM (0x83)
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#define C_RPSYM (0x84)
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#define C_STSYM (0x85)
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#define C_TCSYM (0x86)
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#define C_BCOMM (0x87)
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#define C_ECOML (0x88)
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#define C_ECOMM (0x89)
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#define C_DECL (0x8c)
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#define C_ENTRY (0x8d)
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#define C_FUN (0x8e)
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#define C_BSTAT (0x8f)
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#define C_ESTAT (0x90)
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/********************** SECTION HEADER **********************/
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struct internal_scnhdr
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{
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char s_name[8]; /* section name */
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bfd_vma s_paddr; /* physical address, aliased s_nlib */
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bfd_vma s_vaddr; /* virtual address */
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bfd_vma s_size; /* section size */
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bfd_vma s_scnptr; /* file ptr to raw data for section */
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bfd_vma s_relptr; /* file ptr to relocation */
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bfd_vma s_lnnoptr; /* file ptr to line numbers */
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unsigned long s_nreloc; /* number of relocation entries */
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unsigned long s_nlnno; /* number of line number entries*/
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long s_flags; /* flags */
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long s_align; /* used on I960 */
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};
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/*
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* s_flags "type"
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*/
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#define STYP_REG (0x0000) /* "regular": allocated, relocated, loaded */
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#define STYP_DSECT (0x0001) /* "dummy": relocated only*/
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#define STYP_NOLOAD (0x0002) /* "noload": allocated, relocated, not loaded */
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#define STYP_GROUP (0x0004) /* "grouped": formed of input sections */
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#define STYP_PAD (0x0008) /* "padding": not allocated, not relocated, loaded */
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#define STYP_COPY (0x0010) /* "copy": for decision function used by field update; not allocated, not relocated,
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loaded; reloc & lineno entries processed normally */
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#define STYP_TEXT (0x0020) /* section contains text only */
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#define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
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will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
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update all process invocations. */
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#define STYP_DATA (0x0040) /* section contains data only */
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#define STYP_BSS (0x0080) /* section contains bss only */
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#define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */
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#define STYP_INFO (0x0200) /* comment: not allocated not relocated, not loaded */
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#define STYP_OVER (0x0400) /* overlay: relocated not allocated or loaded */
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#define STYP_LIB (0x0800) /* for .lib: same as INFO */
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#define STYP_MERGE (0x2000) /* merge section -- combines with text, data or bss sections only */
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#define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions wherever padding is necessary and there is a
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word of contiguous bytes
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beginning on a word boundary. */
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#define STYP_LIT 0x8020 /* Literal data (like STYP_TEXT) */
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/********************** LINE NUMBERS **********************/
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/* 1 line number entry for every "breakpointable" source line in a section.
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* Line numbers are grouped on a per function basis; first entry in a function
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* grouping will have l_lnno = 0 and in place of physical address will be the
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* symbol table index of the function name.
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*/
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struct internal_lineno
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{
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union
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{
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long l_symndx; /* function name symbol index, iff l_lnno == 0*/
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long l_paddr; /* (physical) address of line number */
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} l_addr;
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unsigned long l_lnno; /* line number */
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};
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/********************** SYMBOLS **********************/
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#define SYMNMLEN 8 /* # characters in a symbol name */
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#define FILNMLEN 14 /* # characters in a file name */
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#define DIMNUM 4 /* # array dimensions in auxiliary entry */
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struct internal_syment
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{
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union
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{
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char _n_name[SYMNMLEN]; /* old COFF version */
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struct
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{
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long _n_zeroes; /* new == 0 */
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long _n_offset; /* offset into string table */
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} _n_n;
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char *_n_nptr[2]; /* allows for overlaying */
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} _n;
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long n_value; /* value of symbol */
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short n_scnum; /* section number */
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unsigned short n_flags; /* copy of flags from filhdr */
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unsigned short n_type; /* type and derived type */
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unsigned char n_sclass; /* storage class */
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char n_numaux; /* number of aux. entries */
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};
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#define n_name _n._n_name
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#define n_zeroes _n._n_n._n_zeroes
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#define n_offset _n._n_n._n_offset
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/* Relocatable symbols have number of the section in which they are defined,
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or one of the following: */
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#define N_UNDEF ((short)0) /* undefined symbol */
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#define N_ABS ((short)-1) /* value of symbol is absolute */
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#define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */
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#define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */
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#define P_TV ((short)-4) /* indicates symbol needs postload transfer vector*/
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/*
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* Type of a symbol, in low N bits of the word
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*/
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#define T_NULL 0
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#define T_VOID 1 /* function argument (only used by compiler) */
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#define T_CHAR 2 /* character */
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#define T_SHORT 3 /* short integer */
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#define T_INT 4 /* integer */
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#define T_LONG 5 /* long integer */
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#define T_FLOAT 6 /* floating point */
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#define T_DOUBLE 7 /* double word */
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#define T_STRUCT 8 /* structure */
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#define T_UNION 9 /* union */
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#define T_ENUM 10 /* enumeration */
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#define T_MOE 11 /* member of enumeration*/
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#define T_UCHAR 12 /* unsigned character */
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#define T_USHORT 13 /* unsigned short */
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#define T_UINT 14 /* unsigned integer */
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#define T_ULONG 15 /* unsigned long */
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#define T_LNGDBL 16 /* long double */
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/*
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* derived types, in n_type
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*/
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#define DT_NON (0) /* no derived type */
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#define DT_PTR (1) /* pointer */
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#define DT_FCN (2) /* function */
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#define DT_ARY (3) /* array */
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#define BTYPE(x) ((x) & N_BTMASK)
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#define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT))
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#define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT))
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#define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT))
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#define ISTAG(x) ((x)==C_STRTAG||(x)==C_UNTAG||(x)==C_ENTAG)
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#define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK))
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union internal_auxent
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{
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struct
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{
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union
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{
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long l; /* str, un, or enum tag indx */
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struct coff_ptr_struct *p;
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} x_tagndx;
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union
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{
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struct
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{
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unsigned short x_lnno; /* declaration line number */
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unsigned short x_size; /* str/union/array size */
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} x_lnsz;
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long x_fsize; /* size of function */
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} x_misc;
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union
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{
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struct
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{ /* if ISFCN, tag, or .bb */
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long x_lnnoptr; /* ptr to fcn line # */
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union
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{ /* entry ndx past block end */
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long l;
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struct coff_ptr_struct *p;
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} x_endndx;
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} x_fcn;
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struct
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{ /* if ISARY, up to 4 dimen. */
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unsigned short x_dimen[DIMNUM];
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} x_ary;
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} x_fcnary;
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unsigned short x_tvndx; /* tv index */
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} x_sym;
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union
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{
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char x_fname[FILNMLEN];
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struct
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{
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long x_zeroes;
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long x_offset;
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} x_n;
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} x_file;
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struct
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{
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long x_scnlen; /* section length */
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unsigned short x_nreloc; /* # relocation entries */
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unsigned short x_nlinno; /* # line numbers */
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} x_scn;
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struct
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{
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long x_tvfill; /* tv fill value */
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unsigned short x_tvlen; /* length of .tv */
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unsigned short x_tvran[2]; /* tv range */
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} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
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/******************************************
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* RS/6000-specific auxent - last auxent for every external symbol
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******************************************/
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struct
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{
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long x_scnlen; /* csect length */
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long x_parmhash; /* parm type hash index */
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unsigned short x_snhash; /* sect num with parm hash */
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unsigned char x_smtyp; /* symbol align and type */
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/* 0-4 - Log 2 of alignment */
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/* 5-7 - symbol type */
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unsigned char x_smclas; /* storage mapping class */
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long x_stab; /* dbx stab info index */
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unsigned short x_snstab; /* sect num with dbx stab */
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} x_csect; /* csect definition information */
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/* x_smtyp values: */
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#define SMTYP_ALIGN(x) ((x) >> 3) /* log2 of alignment */
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#define SMTYP_SMTYP(x) ((x) & 0x7) /* symbol type */
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/* Symbol type values: */
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#define XTY_ER 0 /* External reference */
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#define XTY_SD 1 /* Csect definition */
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#define XTY_LD 2 /* Label definition */
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#define XTY_CM 3 /* .BSS */
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#define XTY_EM 4 /* Error message */
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#define XTY_US 5 /* "Reserved for internal use" */
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/* x_smclas values: */
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#define XMC_PR 0 /* Read-only program code */
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#define XMC_RO 1 /* Read-only constant */
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#define XMC_DB 2 /* Read-only debug dictionary table */
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#define XMC_TC 3 /* Read-write general TOC entry */
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#define XMC_UA 4 /* Read-write unclassified */
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#define XMC_RW 5 /* Read-write data */
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#define XMC_GL 6 /* Read-only global linkage */
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#define XMC_XO 7 /* Read-only extended operation (simulated insn) */
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#define XMC_SV 8 /* Read-only supervisor call */
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#define XMC_BS 9 /* Read-write BSS */
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#define XMC_DS 10 /* Read-write descriptor csect */
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#define XMC_UC 11 /* Read-write unnamed Fortran common */
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#define XMC_TI 12 /* Read-only traceback index csect */
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#define XMC_TB 13 /* Read-only traceback table csect */
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/* 14 ??? */
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#define XMC_TC0 15 /* Read-write TOC anchor for TOC addressability */
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/******************************************
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* I960-specific *2nd* aux. entry formats
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******************************************/
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struct
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{
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/* This is a very old typo that keeps getting propagated. */
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#define x_stdindx x_stindx
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long x_stindx; /* sys. table entry */
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} x_sc; /* system call entry */
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struct
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{
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unsigned long x_balntry; /* BAL entry point */
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} x_bal; /* BAL-callable function */
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struct
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{
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unsigned long x_timestamp; /* time stamp */
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char x_idstring[20]; /* producer identity string */
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} x_ident; /* Producer ident info */
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};
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/********************** RELOCATION DIRECTIVES **********************/
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struct internal_reloc
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{
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bfd_vma r_vaddr; /* Virtual address of reference */
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long r_symndx; /* Index into symbol table */
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unsigned short r_type; /* Relocation type */
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unsigned char r_size; /* Used by RS/6000 and ECOFF */
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unsigned char r_extern; /* Used by ECOFF */
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unsigned long r_offset; /* Used by Alpha ECOFF, SPARC, others */
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};
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#define R_RELBYTE 017
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#define R_RELWORD 020
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#define R_PCRBYTE 022
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#define R_PCRWORD 023
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#define R_PCRLONG 024
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#define R_DIR16 01
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#define R_DIR32 06
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#define R_PCLONG 020
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#define R_RELBYTE 017
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#define R_RELWORD 020
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#define R_PCR16L 128
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#define R_PCR26L 129
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#define R_VRT16 130
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#define R_HVRT16 131
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#define R_LVRT16 132
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#define R_VRT32 133
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#define R_RELLONG (0x11) /* Direct 32-bit relocation */
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#define R_IPRSHORT (0x18)
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#define R_IPRMED (0x19) /* 24-bit ip-relative relocation */
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#define R_IPRLONG (0x1a)
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#define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */
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#define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */
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#define R_GETSEG (0x1d)
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#define R_GETPA (0x1e)
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#define R_TAGWORD (0x1f)
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#define R_JUMPTARG 0x20 /* strange 29k 00xx00xx reloc */
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#define R_MOVB1 0x41 /* Special h8 16bit or 8 bit reloc for mov.b */
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#define R_MOVB2 0x42 /* Special h8 opcode for 8bit which could be 16 */
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#define R_JMP1 0x43 /* Special h8 16bit jmp which could be pcrel */
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#define R_JMP2 0x44 /* a branch which used to be a jmp */
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#define R_RELLONG_NEG 0x45
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#define R_JMPL1 0x46 /* Special h8 24bit jmp which could be pcrel */
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#define R_JMPL_B8 0x47 /* a 8 bit pcrel which used to be a jmp */
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#define R_MOVLB1 0x48 /* Special h8 24bit or 8 bit reloc for mov.b */
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#define R_MOVLB2 0x49 /* Special h8 opcode for 8bit which could be 24 */
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/* Z8k modes */
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#define R_IMM16 0x01 /* 16 bit abs */
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#define R_JR 0x02 /* jr 8 bit disp */
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#define R_IMM4L 0x23 /* low nibble */
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#define R_IMM8 0x22 /* 8 bit abs */
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#define R_IMM32 R_RELLONG /* 32 bit abs */
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#define R_CALL R_DA /* Absolute address which could be a callr */
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#define R_JP R_DA /* Absolute address which could be a jp */
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#define R_REL16 0x04 /* 16 bit PC rel */
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#define R_CALLR 0x05 /* callr 12 bit disp */
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#define R_SEG 0x10 /* set if in segmented mode */
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#define R_IMM4H 0x24 /* high nibble */
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#define R_DISP7 0x25 /* djnz displacement */
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/* H8500 modes */
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#define R_H8500_IMM8 1 /* 8 bit immediate */
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#define R_H8500_IMM16 2 /* 16 bit immediate */
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#define R_H8500_PCREL8 3 /* 8 bit pcrel */
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#define R_H8500_PCREL16 4 /* 16 bit pcrel */
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#define R_H8500_HIGH8 5 /* high 8 bits of 24 bit address */
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#define R_H8500_LOW16 7 /* low 16 bits of 24 bit immediate */
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#define R_H8500_IMM24 6 /* 24 bit immediate */
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#define R_H8500_IMM32 8 /* 32 bit immediate */
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#define R_H8500_HIGH16 9 /* high 16 bits of 32 bit immediate */
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/* SH modes */
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#define R_SH_PCREL8 3 /* 8 bit pcrel */
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#define R_SH_PCREL16 4 /* 16 bit pcrel */
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#define R_SH_HIGH8 5 /* high 8 bits of 24 bit address */
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#define R_SH_LOW16 7 /* low 16 bits of 24 bit immediate */
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#define R_SH_IMM24 6 /* 24 bit immediate */
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#define R_SH_PCDISP8BY4 9 /* PC rel 8 bits *4 +ve */
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#define R_SH_PCDISP8BY2 10 /* PC rel 8 bits *2 +ve */
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#define R_SH_PCDISP8 11 /* 8 bit branch */
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#define R_SH_PCDISP 12 /* 12 bit branch */
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#define R_SH_IMM32 14 /* 32 bit immediate */
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#define R_SH_IMM8 16
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#define R_SH_IMM8BY2 17
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#define R_SH_IMM8BY4 18
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#define R_SH_IMM4 19
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#define R_SH_IMM4BY2 20
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#define R_SH_IMM4BY4 21
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#define R_SH_PCRELIMM8BY2 22
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#define R_SH_PCRELIMM8BY4 23
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#define R_SH_IMM16 24 /* 16 bit immediate */
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