| /*** coff information for the ARM */ |
| |
| #define COFFARM 1 |
| |
| /********************** FILE HEADER **********************/ |
| |
| 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_INTERWORK file supports switching between ARM and Thumb instruction sets |
| * F_INTERWORK_SET the F_INTERWORK bit is valid |
| * F_APCS_FLOAT code passes float arguments in float registers |
| * F_PIC code is reentrant/position-independent |
| * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) |
| * F_APCS_26 file uses 26 bit ARM Procedure Calling Standard |
| * F_APCS_SET the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised |
| */ |
| |
| #define F_RELFLG (0x0001) |
| #define F_EXEC (0x0002) |
| #define F_LNNO (0x0004) |
| #define F_LSYMS (0x0008) |
| #define F_INTERWORK (0x0010) |
| #define F_INTERWORK_SET (0x0020) |
| #define F_APCS_FLOAT (0x0040) |
| #undef F_AR16WR |
| #define F_PIC (0x0080) |
| #define F_AR32WR (0x0100) |
| #define F_APCS_26 (0x0400) |
| #define F_APCS_SET (0x0800) |
| |
| /* Bits stored in flags field of the internal_f structure */ |
| |
| #define F_INTERWORK (0x0010) |
| #define F_PIC_INT (0x0020) |
| #define F_APCS_FLOAT (0x0040) |
| #define F_ARM_ARCHITECTURE_MASK (0x0c00) |
| #define F_ARM_2 (0x0000) |
| #define F_ARM_2a (0x0000) |
| #define F_ARM_3 (0x0400) |
| #define F_ARM_3M (0x0400) |
| #define F_ARM_4 (0x0800) |
| #define F_ARM_4T (0x0c00) |
| #define F_APCS26 (0x4000) |
| |
| /* |
| * ARMMAGIC ought to encoded the procesor type, |
| * but it is too late to change it now, instead |
| * the flags field of the internal_f structure |
| * is used as shown above. |
| * |
| * XXX - NC 5/6/97 |
| */ |
| |
| #define ARMMAGIC 0xa00 /* I just made this up */ |
| |
| #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC)) |
| |
| #define FILHDR struct external_filehdr |
| #define FILHSZ 20 |
| |
| |
| /********************** AOUT "OPTIONAL HEADER" **********************/ |
| |
| |
| 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; |
| |
| |
| #define AOUTSZ 28 |
| #define AOUTHDRSZ 28 |
| |
| #define OMAGIC 0404 /* object files, eg as output */ |
| #define ZMAGIC 0413 /* demand load format, eg normal ld output */ |
| #define STMAGIC 0401 /* target shlib */ |
| #define SHMAGIC 0443 /* host shlib */ |
| |
| |
| /* define some NT default values */ |
| /* #define NT_IMAGE_BASE 0x400000 moved to internal.h */ |
| #define NT_SECTION_ALIGNMENT 0x1000 |
| #define NT_FILE_ALIGNMENT 0x200 |
| #define NT_DEF_RESERVE 0x100000 |
| #define NT_DEF_COMMIT 0x1000 |
| |
| /********************** SECTION HEADER **********************/ |
| |
| |
| 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 40 |
| |
| /* |
| * names of "special" sections |
| */ |
| #define _TEXT ".text" |
| #define _DATA ".data" |
| #define _BSS ".bss" |
| #define _COMMENT ".comment" |
| #define _LIB ".lib" |
| |
| /* We use the .rdata section to hold read only data. */ |
| #define _LIT ".rdata" |
| |
| /********************** LINE NUMBERS **********************/ |
| |
| /* 1 line number entry for every "breakpointable" source line in a section. |
| * Line numbers are grouped on a per function basis; first entry in a function |
| * grouping will have l_lnno = 0 and in place of physical address will be the |
| * symbol table index of the function name. |
| */ |
| struct external_lineno { |
| union { |
| char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ |
| char l_paddr[4]; /* (physical) address of line number */ |
| } l_addr; |
| char l_lnno[2]; /* line number */ |
| }; |
| |
| |
| #define LINENO struct external_lineno |
| #define LINESZ 6 |
| |
| |
| /********************** SYMBOLS **********************/ |
| |
| #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
| #define E_FILNMLEN 14 /* # characters in a file name */ |
| #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ |
| |
| struct external_syment |
| { |
| union { |
| char e_name[E_SYMNMLEN]; |
| struct { |
| char e_zeroes[4]; |
| char e_offset[4]; |
| } e; |
| } e; |
| char e_value[4]; |
| char e_scnum[2]; |
| char e_type[2]; |
| char e_sclass[1]; |
| char e_numaux[1]; |
| }; |
| |
| #define N_BTMASK (0xf) |
| #define N_TMASK (0x30) |
| #define N_BTSHFT (4) |
| #define N_TSHIFT (2) |
| |
| union external_auxent { |
| struct { |
| char x_tagndx[4]; /* str, un, or enum tag indx */ |
| union { |
| struct { |
| char x_lnno[2]; /* declaration line number */ |
| char x_size[2]; /* str/union/array size */ |
| } x_lnsz; |
| char x_fsize[4]; /* size of function */ |
| } x_misc; |
| union { |
| struct { /* if ISFCN, tag, or .bb */ |
| 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. */ |
| char x_dimen[E_DIMNUM][2]; |
| } x_ary; |
| } x_fcnary; |
| char x_tvndx[2]; /* tv index */ |
| } x_sym; |
| |
| union { |
| char x_fname[E_FILNMLEN]; |
| struct { |
| char x_zeroes[4]; |
| char x_offset[4]; |
| } x_n; |
| } x_file; |
| |
| struct { |
| char x_scnlen[4]; /* section length */ |
| char x_nreloc[2]; /* # relocation entries */ |
| char x_nlinno[2]; /* # line numbers */ |
| char x_checksum[4]; /* section COMDAT checksum */ |
| char x_associated[2]; /* COMDAT associated section index */ |
| char x_comdat[1]; /* COMDAT selection number */ |
| } x_scn; |
| |
| struct { |
| 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)) */ |
| |
| |
| }; |
| |
| #define SYMENT struct external_syment |
| #define SYMESZ 18 |
| #define AUXENT union external_auxent |
| #define AUXESZ 18 |
| |
| |
| # define _ETEXT "etext" |
| |
| |
| /********************** RELOCATION DIRECTIVES **********************/ |
| |
| |
| |
| struct external_reloc { |
| char r_vaddr[4]; |
| char r_symndx[4]; |
| char r_type[2]; |
| char r_offset[4]; |
| }; |
| |
| |
| #define RELOC struct external_reloc |
| #define RELSZ 14 |