diff options
Diffstat (limited to 'include/coff-mips.h')
| -rwxr-xr-x | include/coff-mips.h | 412 |
1 files changed, 102 insertions, 310 deletions
diff --git a/include/coff-mips.h b/include/coff-mips.h index b50fe48..0318385 100755 --- a/include/coff-mips.h +++ b/include/coff-mips.h @@ -1,114 +1,45 @@ -/* ECOFF include file for MIPS machines. It has been split off from the - include files for other COFF machines. It is derived from... */ - -/*** coff information for 80960. Origins: Intel corp, natch. */ - -/* This include file is also used for rudimentary ECOFF support on MIPS - machines. Such differences as are needed are #ifdef MIPS. */ -/* For separate ecoff.h: we force MIPS on, to get the changes. */ -#undef MIPS -#define MIPS 1 - -/* NOTE: Tagentries (cf TAGBITS) are not used by the 960 */ /********************** FILE HEADER **********************/ -struct 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 */ +struct external_filehdr { + char f_magic[2]; /* magic number */ + char f_nscns[2]; /* number of sections */ + char f_timdat[4]; /* time & date stamp */ + char f_symptr[4]; /* file pointer to symtab */ + char f_nsyms[4]; /* number of symtab entries */ + char f_opthdr[2]; /* sizeof(optional hdr) */ + char f_flags[2]; /* 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_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) - */ -#define F_RELFLG (0x0001) -#define F_EXEC (0x0002) -#define F_LNNO (0x0004) -#define F_LSYMS (0x0008) -#define F_AR32WR (0x0010) +/* Mips magics */ +#define MIPS_MAGIC_1 0x0180 +#define MIPS_MAGIC_2 0x0162 +#define MIPS_MAGIC_3 0x0160 -/* - * Intel 80960 (I960) processor flags. - * F_I960TYPE == mask for processor type field. - */ - -#define F_I960TYPE (0xf000) -#define F_I960CORE (0x1000) -#define F_I960KB (0x2000) -#define F_I960SB (0x2000) -#define F_I960MC (0x3000) -#define F_I960XA (0x4000) -#define F_I960CA (0x5000) -#define F_I960KA (0x6000) -#define F_I960SA (0x6000) - - /* - * i80960 Magic Numbers - */ -#define I960ROMAGIC (0x160) /* read-only text segments */ -#define I960RWMAGIC (0x161) /* read-write text segments */ -#define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) +#define ECOFFBADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \ + ((x).f_magic!=MIPS_MAGIC_2) &&\ + ((x).f_magic!=MIPS_MAGIC_3)) -#define FILHDR struct filehdr -#define FILHSZ sizeof(FILHDR) +#define FILHDR struct external_filehdr +#define FILHSZ 20 /********************** AOUT "OPTIONAL HEADER" **********************/ -typedef struct { - unsigned long phys_addr; - unsigned long bitarray; -} TAGBITS; - - -/* These appear to be used only by exec(2). I don't know who cares - about them in a cross development environment. In any case, this - is my collection after researching the issue for a few hours. - Apparently, most have these have remained essentially unchanged - since v7 days, although a few new ones have been added. xoxorich. - Could we have a little more teleology please? -- Gumby */ - -#define BAD0MAGIC (0401) /* (?) "lpd (UNIX/RT)" */ -#define BAD1MAGIC (0405) /* (?) overlay */ -#define OMAGIC (0407) /* old impure format. data immediately - follows text. both sections are rw. */ -#define NMAGIC (0410) /* split i&d, read-only text */ -#define A_MAGIC3 (0411) /* (?) "separated I&D" */ -#define ZMAGIC (0413) /* like NMAGIC, but demand loaded */ -#define PAGEMAGIC2 (0414) /* (?) like ZMAGIC, but address zero - explicitly unmapped. */ /* */ -#define REGMAGIC (0414) /* (?) a PAGEMAGIC2 alias? */ -#define PAGEMAGIC3 (0415) /* (?) like ZMAGIC, but address zero mapped. */ -#define A_MAGIC5 (0437) /* (?) "system overlay, separated I&D" */ -#define SASMAGIC (010000) /* (?) "Single Address Space" */ -#define MASMAGIC (020000) /* (?) "Multiple (separate I/D) Addr. Spaces" */ - -typedef struct 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 " " */ -#if U3B - unsigned long dum1; - unsigned long dum2; /* pad to entry point */ -#endif - 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 */ - unsigned long tagentries; /* number of tag entries to follow */ + +typedef struct +{ + char magic[2]; /* type of file */ + char vstamp[2]; /* version stamp */ + char tsize[4]; /* text size in bytes, padded to FW bdry*/ + char dsize[4]; /* initialized data " " */ + char bsize[4]; /* uninitialized data " " */ + char entry[4]; /* entry pt. */ + char text_start[4]; /* base of text used for this file */ + char data_start[4]; /* base of data used for this file */ } AOUTHDR; /* return a pointer to the tag bits array */ @@ -121,103 +52,25 @@ typedef struct aouthdr { #define AOUTSZ (sizeof(AOUTHDR)) -/********************** 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_REGARG 19 */ /* My guess - but Intel specific*/ -#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 */ -/********************** SECTION HEADER **********************/ -struct 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 short s_nreloc; /* number of relocation entries */ - unsigned short s_nlnno; /* number of line number entries*/ - long s_flags; /* flags */ -#ifndef MIPS - /* This field exists in Intel COFF, not in Mips ECOFF. */ - unsigned long s_align; /* section alignment */ -#endif -}; +/********************** SECTION HEADER **********************/ -/* - * names of "special" sections - */ -#define _TEXT ".text" -#define _DATA ".data" -#define _BSS ".bss" -/* - * 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. */ - -#define SCNHDR struct scnhdr +struct external_scnhdr { + char s_name[8]; /* section name */ + char s_paddr[4]; /* physical address, aliased s_nlib */ + char s_vaddr[4]; /* virtual address */ + char s_size[4]; /* section size */ + char s_scnptr[4]; /* file ptr to raw data for section */ + char s_relptr[4]; /* file ptr to relocation */ + char s_lnnoptr[4]; /* file ptr to line numbers */ + char s_nreloc[2]; /* number of relocation entries */ + char s_nlnno[2]; /* number of line number entries*/ + char s_flags[4]; /* flags */ + }; + +#define SCNHDR struct external_scnhdr #define SCNHSZ sizeof(SCNHDR) @@ -228,17 +81,18 @@ struct scnhdr { * grouping will have l_lnno = 0 and in place of physical address will be the * symbol table index of the function name. */ -struct lineno { +struct external_lineno { union { - long l_symndx; /* function name symbol index, iff l_lnno == 0*/ - long l_paddr; /* (physical) address of line number */ + char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ + char l_paddr[4]; /* (physical) address of line number */ } l_addr; - unsigned short l_lnno; /* line number */ + char l_lnno[2]; /* line number */ char padding[2]; /* force alignment */ }; -#define LINENO struct lineno -#define LINESZ sizeof(LINENO) + +#define LINENO struct external_lineno +#define LINESZ 8 /********************** SYMBOLS **********************/ @@ -247,178 +101,116 @@ struct lineno { #define FILNMLEN 14 /* # characters in a file name */ #define DIMNUM 4 /* # array dimensions in auxiliary entry */ -struct 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 long n_type; /* type and derived type */ - char n_sclass; /* storage class */ - char n_numaux; /* number of aux. entries */ - char pad2[2]; /* force alignment */ +struct external_syment +{ + union { + char e_name[SYMNMLEN]; + struct { + char e_zeroes[4]; + char e_offset[4]; + } e; + } e; + char e_value[4]; + char e_scnum[2]; + char e_flags[2]; + char e_type[4]; + char e_sclass[1]; + char e_numaux[1]; + char pad2[2]; }; -#define n_name _n._n_name -#define n_ptr _n._n_nptr[1] -#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 4 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 N_BTMASK (0x1f) #define N_TMASK (0x60) #define N_BTSHFT (5) #define N_TSHIFT (2) - -#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 DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) - -union auxent { +union external_auxent { struct { - long x_tagndx; /* str, un, or enum tag indx */ + char x_tagndx[4]; /* str, un, or enum tag indx */ union { struct { - unsigned short x_lnno; /* declaration line number */ - unsigned short x_size; /* str/union/array size */ + char x_lnno[2]; /* declaration line number */ + char x_size[2]; /* str/union/array size */ } x_lnsz; - long x_fsize; /* size of function */ + char x_fsize[4]; /* size of function */ } x_misc; union { struct { /* if ISFCN, tag, or .bb */ - long x_lnnoptr; /* ptr to fcn line # */ - long x_endndx; /* entry ndx past block end */ + char x_lnnoptr[4]; /* ptr to fcn line # */ + char x_endndx[4]; /* entry ndx past block end */ } x_fcn; struct { /* if ISARY, up to 4 dimen. */ - unsigned short x_dimen[DIMNUM]; + char x_dimen[DIMNUM][2]; } x_ary; } x_fcnary; - unsigned short x_tvndx; /* tv index */ + char x_tvndx[2]; /* tv index */ } x_sym; union { char x_fname[FILNMLEN]; struct { - long x_zeroes; - long x_offset; + char x_zeroes[4]; + char x_offset[4]; } x_n; } x_file; struct { - long x_scnlen; /* section length */ - unsigned short x_nreloc; /* # relocation entries */ - unsigned short x_nlinno; /* # line numbers */ + char x_scnlen[4]; /* section length */ + char x_nreloc[2]; /* # relocation entries */ + char x_nlinno[2]; /* # 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 */ + char x_tvfill[4]; /* tv fill value */ + char x_tvlen[2]; /* length of .tv */ + char x_tvran[2][2]; /* tv range */ } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ /****************************************** * I960-specific *2nd* aux. entry formats ******************************************/ struct { -/* This is a very old typo that keeps getting propagated. */ + /* This is a very old typo that keeps getting propagated. */ #define x_stdindx x_stindx - long x_stindx; /* sys. table entry */ + char x_stindx[4]; /* sys. table entry */ } x_sc; /* system call entry */ struct { - unsigned long x_balntry; /* BAL entry point */ + char x_balntry[4]; /* BAL entry point */ } x_bal; /* BAL-callable function */ struct { - unsigned long x_timestamp; /* time stamp */ + char x_timestamp[4]; /* time stamp */ char x_idstring[20]; /* producer identity string */ } x_ident; /* Producer ident info */ - char a[sizeof(struct syment)]; /* force auxent/syment sizes to match */ }; -#define SYMENT struct syment -#define SYMESZ sizeof(SYMENT) -#define AUXENT union auxent -#define AUXESZ sizeof(AUXENT) -#if VAX || I960 + +#define SYMENT struct external_syment +#define SYMESZ sizeof(SYMENT) /* FIXME - calc by hand */ +#define AUXENT union external_auxent +#define AUXESZ sizeof(AUXENT) /* FIXME - calc by hand */ + # define _ETEXT "_etext" -#else -# define _ETEXT "etext" -#endif /********************** RELOCATION DIRECTIVES **********************/ -struct reloc { - long r_vaddr; /* Virtual address of reference */ - long r_symndx; /* Index into symbol table */ - unsigned short r_type; /* Relocation type */ - char pad[2]; /* Unused */ +struct external_reloc { + char r_vaddr[4]; + char r_symndx[4]; + char r_type[2]; + char pad[2]; }; + /* Relevent values for r_type and i960. Would someone please document them */ -#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 RELOC struct reloc -#define RELSZ sizeof(RELOC) + +#define RELOC struct external_reloc +#define RELSZ 12 #define DEFAULT_DATA_SECTION_ALIGNMENT 4 #define DEFAULT_BSS_SECTION_ALIGNMENT 4 |