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-/* Declarations of internal format of MIPS ECOFF symbols.
- Originally contributed by MIPS Computer Systems and Third Eye Software.
- Changes contributed by Cygnus Support are in the public domain.
-
- This file is just aggregated with the files that make up the GNU
- release; it is not considered part of GAS, GDB, or other GNU
- programs. */
-
-/*
- * |-----------------------------------------------------------|
- * | Copyright (c) 1992, 1991, 1990 MIPS Computer Systems, Inc.|
- * | MIPS Computer Systems, Inc. grants reproduction and use |
- * | rights to all parties, PROVIDED that this comment is |
- * | maintained in the copy. |
- * |-----------------------------------------------------------|
- */
-#ifndef _SYM_H
-#define _SYM_H
-
-/* (C) Copyright 1984 by Third Eye Software, Inc.
- *
- * Third Eye Software, Inc. grants reproduction and use rights to
- * all parties, PROVIDED that this comment is maintained in the copy.
- *
- * Third Eye makes no claims about the applicability of this
- * symbol table to a particular use.
- */
-
-/*
- * This file contains the definition of the Third Eye Symbol Table.
- *
- * Symbols are assumed to be in 'encounter order' - i.e. the order that
- * the things they represent were encountered by the compiler/assembler/loader.
- * EXCEPT for globals! These are assumed to be bunched together,
- * probably right after the last 'normal' symbol. Globals ARE sorted
- * in ascending order.
- *
- * -----------------------------------------------------------------------
- * A brief word about Third Eye naming/use conventions:
- *
- * All arrays and index's are 0 based.
- * All "ifooMax" values are the highest legal value PLUS ONE. This makes
- * them good for allocating arrays, etc. All checks are "ifoo < ifooMax".
- *
- * "isym" Index into the SYMbol table.
- * "ipd" Index into the Procedure Descriptor array.
- * "ifd" Index into the File Descriptor array.
- * "iss" Index into String Space.
- * "cb" Count of Bytes.
- * "rgPd" array whose domain is "0..ipdMax-1" and RanGe is PDR.
- * "rgFd" array whose domain is "0..ifdMax-1" and RanGe is FDR.
- */
-
-
-/*
- * Symbolic Header (HDR) structure.
- * As long as all the pointers are set correctly,
- * we don't care WHAT order the various sections come out in!
- *
- * A file produced solely for the use of CDB will probably NOT have
- * any instructions or data areas in it, as these are available
- * in the original.
- */
-
-typedef struct {
- short magic; /* to verify validity of the table */
- short vstamp; /* version stamp */
- long ilineMax; /* number of line number entries */
- bfd_vma cbLine; /* number of bytes for line number entries */
- bfd_vma cbLineOffset; /* offset to start of line number entries*/
- long idnMax; /* max index into dense number table */
- bfd_vma cbDnOffset; /* offset to start dense number table */
- long ipdMax; /* number of procedures */
- bfd_vma cbPdOffset; /* offset to procedure descriptor table */
- long isymMax; /* number of local symbols */
- bfd_vma cbSymOffset; /* offset to start of local symbols*/
- long ioptMax; /* max index into optimization symbol entries */
- bfd_vma cbOptOffset; /* offset to optimization symbol entries */
- long iauxMax; /* number of auxillary symbol entries */
- bfd_vma cbAuxOffset; /* offset to start of auxillary symbol entries*/
- long issMax; /* max index into local strings */
- bfd_vma cbSsOffset; /* offset to start of local strings */
- long issExtMax; /* max index into external strings */
- bfd_vma cbSsExtOffset; /* offset to start of external strings */
- long ifdMax; /* number of file descriptor entries */
- bfd_vma cbFdOffset; /* offset to file descriptor table */
- long crfd; /* number of relative file descriptor entries */
- bfd_vma cbRfdOffset; /* offset to relative file descriptor table */
- long iextMax; /* max index into external symbols */
- bfd_vma cbExtOffset; /* offset to start of external symbol entries*/
- /* If you add machine dependent fields, add them here */
- } HDRR, *pHDRR;
-#define cbHDRR sizeof(HDRR)
-#define hdrNil ((pHDRR)0)
-
-/*
- * The FDR and PDR structures speed mapping of address <-> name.
- * They are sorted in ascending memory order and are kept in
- * memory by CDB at runtime.
- */
-
-/*
- * File Descriptor
- *
- * There is one of these for EVERY FILE, whether compiled with
- * full debugging symbols or not. The name of a file should be
- * the path name given to the compiler. This allows the user
- * to simply specify the names of the directories where the COMPILES
- * were done, and we will be able to find their files.
- * A field whose comment starts with "R - " indicates that it will be
- * setup at runtime.
- */
-typedef struct fdr {
- bfd_vma adr; /* memory address of beginning of file */
- long rss; /* file name (of source, if known) */
- long issBase; /* file's string space */
- bfd_vma cbSs; /* number of bytes in the ss */
- long isymBase; /* beginning of symbols */
- long csym; /* count file's of symbols */
- long ilineBase; /* file's line symbols */
- long cline; /* count of file's line symbols */
- long ioptBase; /* file's optimization entries */
- long copt; /* count of file's optimization entries */
- unsigned short ipdFirst;/* start of procedures for this file */
- short cpd; /* count of procedures for this file */
- long iauxBase; /* file's auxiliary entries */
- long caux; /* count of file's auxiliary entries */
- long rfdBase; /* index into the file indirect table */
- long crfd; /* count file indirect entries */
- unsigned lang: 5; /* language for this file */
- unsigned fMerge : 1; /* whether this file can be merged */
- unsigned fReadin : 1; /* true if it was read in (not just created) */
- unsigned fBigendian : 1;/* if set, was compiled on big endian machine */
- /* aux's will be in compile host's sex */
- unsigned glevel : 2; /* level this file was compiled with */
- unsigned reserved : 22; /* reserved for future use */
- bfd_vma cbLineOffset; /* byte offset from header for this file ln's */
- bfd_vma cbLine; /* size of lines for this file */
- } FDR, *pFDR;
-#define cbFDR sizeof(FDR)
-#define fdNil ((pFDR)0)
-#define ifdNil -1
-#define ifdTemp 0
-#define ilnNil -1
-
-
-/*
- * Procedure Descriptor
- *
- * There is one of these for EVERY TEXT LABEL.
- * If a procedure is in a file with full symbols, then isym
- * will point to the PROC symbols, else it will point to the
- * global symbol for the label.
- */
-
-typedef struct pdr {
- bfd_vma adr; /* memory address of start of procedure */
- long isym; /* start of local symbol entries */
- long iline; /* start of line number entries*/
- long regmask; /* save register mask */
- long regoffset; /* save register offset */
- long iopt; /* start of optimization symbol entries*/
- long fregmask; /* save floating point register mask */
- long fregoffset; /* save floating point register offset */
- long frameoffset; /* frame size */
- short framereg; /* frame pointer register */
- short pcreg; /* offset or reg of return pc */
- long lnLow; /* lowest line in the procedure */
- long lnHigh; /* highest line in the procedure */
- bfd_vma cbLineOffset; /* byte offset for this procedure from the fd base */
- /* These fields are new for 64 bit ECOFF. */
- unsigned gp_prologue : 8; /* byte size of GP prologue */
- unsigned gp_used : 1; /* true if the procedure uses GP */
- unsigned reg_frame : 1; /* true if register frame procedure */
- unsigned prof : 1; /* true if compiled with -pg */
- unsigned reserved : 13; /* reserved: must be zero */
- unsigned localoff : 8; /* offset of local variables from vfp */
- } PDR, *pPDR;
-#define cbPDR sizeof(PDR)
-#define pdNil ((pPDR) 0)
-#define ipdNil -1
-
-/*
- * The structure of the runtime procedure descriptor created by the loader
- * for use by the static exception system.
- */
-/*
- * If 0'd out because exception_info chokes Visual C++ and because there
- * don't seem to be any references to this structure elsewhere in gdb.
- */
-#if 0
-typedef struct runtime_pdr {
- bfd_vma adr; /* memory address of start of procedure */
- long regmask; /* save register mask */
- long regoffset; /* save register offset */
- long fregmask; /* save floating point register mask */
- long fregoffset; /* save floating point register offset */
- long frameoffset; /* frame size */
- short framereg; /* frame pointer register */
- short pcreg; /* offset or reg of return pc */
- long irpss; /* index into the runtime string table */
- long reserved;
- struct exception_info *exception_info;/* pointer to exception array */
-} RPDR, *pRPDR;
-#define cbRPDR sizeof(RPDR)
-#define rpdNil ((pRPDR) 0)
-#endif
-
-/*
- * Line Numbers
- *
- * Line Numbers are segregated from the normal symbols because they
- * are [1] smaller , [2] are of no interest to your
- * average loader, and [3] are never needed in the middle of normal
- * scanning and therefore slow things down.
- *
- * By definition, the first LINER for any given procedure will have
- * the first line of a procedure and represent the first address.
- */
-
-typedef long LINER, *pLINER;
-#define lineNil ((pLINER)0)
-#define cbLINER sizeof(LINER)
-#define ilineNil -1
-
-
-
-/*
- * The Symbol Structure (GFW, to those who Know!)
- */
-
-typedef struct {
- long iss; /* index into String Space of name */
- bfd_vma value; /* value of symbol */
- unsigned st : 6; /* symbol type */
- unsigned sc : 5; /* storage class - text, data, etc */
- unsigned reserved : 1; /* reserved */
- unsigned index : 20; /* index into sym/aux table */
- } SYMR, *pSYMR;
-#define symNil ((pSYMR)0)
-#define cbSYMR sizeof(SYMR)
-#define isymNil -1
-#define indexNil 0xfffff
-#define issNil -1
-#define issNull 0
-
-
-/* The following converts a memory resident string to an iss.
- * This hack is recognized in SbFIss, in sym.c of the debugger.
- */
-#define IssFSb(sb) (0x80000000 | ((unsigned long)(sb)))
-
-/* E X T E R N A L S Y M B O L R E C O R D
- *
- * Same as the SYMR except it contains file context to determine where
- * the index is.
- */
-typedef struct ecoff_extr {
- unsigned jmptbl:1; /* symbol is a jump table entry for shlibs */
- unsigned cobol_main:1; /* symbol is a cobol main procedure */
- unsigned weakext:1; /* symbol is weak external */
- unsigned reserved:13; /* reserved for future use */
- int ifd; /* where the iss and index fields point into */
- SYMR asym; /* symbol for the external */
- } EXTR, *pEXTR;
-#define extNil ((pEXTR)0)
-#define cbEXTR sizeof(EXTR)
-
-
-/* A U X I L L A R Y T Y P E I N F O R M A T I O N */
-
-/*
- * Type Information Record
- */
-typedef struct {
- unsigned fBitfield : 1; /* set if bit width is specified */
- unsigned continued : 1; /* indicates additional TQ info in next AUX */
- unsigned bt : 6; /* basic type */
- unsigned tq4 : 4;
- unsigned tq5 : 4;
- /* ---- 16 bit boundary ---- */
- unsigned tq0 : 4;
- unsigned tq1 : 4; /* 6 type qualifiers - tqPtr, etc. */
- unsigned tq2 : 4;
- unsigned tq3 : 4;
- } TIR, *pTIR;
-#define cbTIR sizeof(TIR)
-#define tiNil ((pTIR)0)
-#define itqMax 6
-
-/*
- * Relative symbol record
- *
- * If the rfd field is 4095, the index field indexes into the global symbol
- * table.
- */
-
-typedef struct {
- unsigned rfd : 12; /* index into the file indirect table */
- unsigned index : 20; /* index int sym/aux/iss tables */
- } RNDXR, *pRNDXR;
-#define cbRNDXR sizeof(RNDXR)
-#define rndxNil ((pRNDXR)0)
-
-/* dense numbers or sometimes called block numbers are stored in this type,
- * a rfd of 0xffffffff is an index into the global table.
- */
-typedef struct {
- unsigned long rfd; /* index into the file table */
- unsigned long index; /* index int sym/aux/iss tables */
- } DNR, *pDNR;
-#define cbDNR sizeof(DNR)
-#define dnNil ((pDNR)0)
-
-
-
-/*
- * Auxillary information occurs only if needed.
- * It ALWAYS occurs in this order when present.
-
- isymMac used by stProc only
- TIR type info
- TIR additional TQ info (if first TIR was not enough)
- rndx if (bt == btStruct,btUnion,btEnum,btSet,btRange,
- btTypedef):
- rsym.index == iaux for btSet or btRange
- else rsym.index == isym
- dimLow btRange, btSet
- dimMac btRange, btSet
- rndx0 As many as there are tq arrays
- dimLow0
- dimHigh0
- ...
- rndxMax-1
- dimLowMax-1
- dimHighMax-1
- width in bits if (bit field), width in bits.
- */
-#define cAuxMax (6 + (idimMax*3))
-
-/* a union of all possible info in the AUX universe */
-typedef union {
- TIR ti; /* type information record */
- RNDXR rndx; /* relative index into symbol table */
- long dnLow; /* low dimension */
- long dnHigh; /* high dimension */
- long isym; /* symbol table index (end of proc) */
- long iss; /* index into string space (not used) */
- long width; /* width for non-default sized struc fields */
- long count; /* count of ranges for variant arm */
- } AUXU, *pAUXU;
-#define cbAUXU sizeof(AUXU)
-#define auxNil ((pAUXU)0)
-#define iauxNil -1
-
-
-/*
- * Optimization symbols
- *
- * Optimization symbols contain some overlap information with the normal
- * symbol table. In particular, the proc information
- * is somewhat redundant but necessary to easily find the other information
- * present.
- *
- * All of the offsets are relative to the beginning of the last otProc
- */
-
-typedef struct {
- unsigned ot: 8; /* optimization type */
- unsigned value: 24; /* address where we are moving it to */
- RNDXR rndx; /* points to a symbol or opt entry */
- unsigned long offset; /* relative offset this occured */
- } OPTR, *pOPTR;
-#define optNil ((pOPTR) 0)
-#define cbOPTR sizeof(OPTR)
-#define ioptNil -1
-
-/*
- * File Indirect
- *
- * When a symbol is referenced across files the following procedure is used:
- * 1) use the file index to get the File indirect entry.
- * 2) use the file indirect entry to get the File descriptor.
- * 3) add the sym index to the base of that file's sym table
- *
- */
-
-typedef long RFDT, *pRFDT;
-#define cbRFDT sizeof(RFDT)
-#define rfdNil -1
-
-/*
- * The file indirect table in the mips loader is known as an array of FITs.
- * This is done to keep the code in the loader readable in the area where
- * these tables are merged. Note this is only a name change.
- */
-typedef long FIT, *pFIT;
-#define cbFIT sizeof(FIT)
-#define ifiNil -1
-#define fiNil ((pFIT) 0)
-
-#ifdef _LANGUAGE_PASCAL
-#define ifdNil -1
-#define ilnNil -1
-#define ipdNil -1
-#define ilineNil -1
-#define isymNil -1
-#define indexNil 16#fffff
-#define issNil -1
-#define issNull 0
-#define itqMax 6
-#define iauxNil -1
-#define ioptNil -1
-#define rfdNil -1
-#define ifiNil -1
-#endif /* _LANGUAGE_PASCAL */
-
-
-/* Dense numbers
- *
- * Rather than use file index, symbol index pairs to represent symbols
- * and globals, we use dense number so that they can be easily embeded
- * in intermediate code and the programs that process them can
- * use direct access tabls instead of hash table (which would be
- * necesary otherwise because of the sparse name space caused by
- * file index, symbol index pairs. Dense number are represented
- * by RNDXRs.
- */
-
-/*
- * The following table defines the meaning of each SYM field as
- * a function of the "st". (scD/B == scData OR scBss)
- *
- * Note: the value "isymMac" is used by symbols that have the concept
- * of enclosing a block of related information. This value is the
- * isym of the first symbol AFTER the end associated with the primary
- * symbol. For example if a procedure was at isym==90 and had an
- * isymMac==155, the associated end would be at isym==154, and the
- * symbol at 155 would probably (although not necessarily) be the
- * symbol for the next procedure. This allows rapid skipping over
- * internal information of various sorts. "stEnd"s ALWAYS have the
- * isym of the primary symbol that started the block.
- *
-
-ST SC VALUE INDEX
--------- ------ -------- ------
-stFile scText address isymMac
-stLabel scText address ---
-stGlobal scD/B address iaux
-stStatic scD/B address iaux
-stParam scAbs offset iaux
-stLocal scAbs offset iaux
-stProc scText address iaux (isymMac is first AUX)
-stStaticProc scText address iaux (isymMac is first AUX)
-
-stMember scNil ordinal --- (if member of enum)
- (mipsread thinks the case below has a bit, not byte, offset.)
-stMember scNil byte offset iaux (if member of struct/union)
-stMember scBits bit offset iaux (bit field spec)
-
-stBlock scText address isymMac (text block)
- (the code seems to think that rather than scNil, we see scInfo for
- the two cases below.)
-stBlock scNil cb isymMac (struct/union member define)
-stBlock scNil cMembers isymMac (enum member define)
-
- (New types added by SGI to simplify things:)
-stStruct scInfo cb isymMac (struct type define)
-stUnion scInfo cb isymMac (union type define)
-stEnum scInfo cMembers isymMac (enum type define)
-
-stEnd scText address isymStart
-stEnd scNil ------- isymStart (struct/union/enum)
-
-stTypedef scNil ------- iaux
-stRegReloc sc??? value old register number
-stForward sc??? new address isym to original symbol
-
-stConstant scInfo value --- (scalar)
-stConstant scInfo iss --- (complex, e.g. string)
-
- *
- */
-#endif