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Diffstat (limited to 'include/coff/sym.h')
| -rw-r--r-- | include/coff/sym.h | 484 |
1 files changed, 0 insertions, 484 deletions
diff --git a/include/coff/sym.h b/include/coff/sym.h deleted file mode 100644 index 76204af..0000000 --- a/include/coff/sym.h +++ /dev/null @@ -1,484 +0,0 @@ -/* 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 |