mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
244 lines
7.0 KiB
244 lines
7.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* IBM RS/6000 "XCOFF" file definitions for BFD. |
|
Copyright (C) 1990, 1991 Free Software Foundation, Inc. |
|
FIXME: Can someone provide a transliteration of this name into ASCII? |
|
Using the following chars caused a compiler warning on HIUX (so I replaced |
|
them with octal escapes), and isn't useful without an understanding of what |
|
character set it is. |
|
Written by Mimi Ph\373\364ng-Th\345o V\365 of IBM |
|
and John Gilmore of Cygnus Support. */ |
|
|
|
/********************** 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 */ |
|
}; |
|
|
|
/* IBM RS/6000 */ |
|
#define U802WRMAGIC 0730 /* writeable text segments **chh** */ |
|
#define U802ROMAGIC 0735 /* readonly sharable text segments */ |
|
#define U802TOCMAGIC 0737 /* readonly text segments and TOC */ |
|
|
|
#define BADMAG(x) \ |
|
((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \ |
|
(x).f_magic != U802TOCMAGIC) |
|
|
|
#define FILHDR struct external_filehdr |
|
#define FILHSZ 20 |
|
|
|
|
|
/********************** AOUT "OPTIONAL HEADER" **********************/ |
|
|
|
|
|
typedef struct |
|
{ |
|
unsigned char magic[2]; /* type of file */ |
|
unsigned char vstamp[2]; /* version stamp */ |
|
unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */ |
|
unsigned char dsize[4]; /* initialized data " " */ |
|
unsigned char bsize[4]; /* uninitialized data " " */ |
|
unsigned char entry[4]; /* entry pt. */ |
|
unsigned char text_start[4]; /* base of text used for this file */ |
|
unsigned char data_start[4]; /* base of data used for this file */ |
|
unsigned char o_toc[4]; /* address of TOC */ |
|
unsigned char o_snentry[2]; /* section number of entry point */ |
|
unsigned char o_sntext[2]; /* section number of .text section */ |
|
unsigned char o_sndata[2]; /* section number of .data section */ |
|
unsigned char o_sntoc[2]; /* section number of TOC */ |
|
unsigned char o_snloader[2]; /* section number of .loader section */ |
|
unsigned char o_snbss[2]; /* section number of .bss section */ |
|
unsigned char o_algntext[2]; /* .text alignment */ |
|
unsigned char o_algndata[2]; /* .data alignment */ |
|
unsigned char o_modtype[2]; /* module type (??) */ |
|
unsigned char o_cputype[2]; /* cpu type */ |
|
unsigned char o_maxstack[4]; /* max stack size (??) */ |
|
unsigned char o_maxdata[4]; /* max data size (??) */ |
|
unsigned char o_resv2[12]; /* reserved */ |
|
} |
|
AOUTHDR; |
|
|
|
#define AOUTSZ 72 |
|
#define SMALL_AOUTSZ (28) |
|
#define AOUTHDRSZ 72 |
|
|
|
#define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */ |
|
#define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */ |
|
#define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */ |
|
|
|
|
|
/********************** 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 */ |
|
}; |
|
|
|
/* |
|
* names of "special" sections |
|
*/ |
|
#define _TEXT ".text" |
|
#define _DATA ".data" |
|
#define _BSS ".bss" |
|
#define _PAD ".pad" |
|
#define _LOADER ".loader" |
|
|
|
#define SCNHDR struct external_scnhdr |
|
#define SCNHSZ 40 |
|
|
|
/* XCOFF uses a special .loader section with type STYP_LOADER. */ |
|
#define STYP_LOADER 0x1000 |
|
|
|
/* XCOFF uses a special .debug section with type STYP_DEBUG. */ |
|
#define STYP_DEBUG 0x2000 |
|
|
|
/* XCOFF handles line number or relocation overflow by creating |
|
another section header with STYP_OVRFLO set. */ |
|
#define STYP_OVRFLO 0x8000 |
|
|
|
/********************** 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 (017) |
|
#define N_TMASK (060) |
|
#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 */ |
|
} 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)) */ |
|
|
|
struct { |
|
unsigned char x_scnlen[4]; |
|
unsigned char x_parmhash[4]; |
|
unsigned char x_snhash[2]; |
|
unsigned char x_smtyp[1]; |
|
unsigned char x_smclas[1]; |
|
unsigned char x_stab[4]; |
|
unsigned char x_snstab[2]; |
|
} x_csect; |
|
|
|
}; |
|
|
|
#define SYMENT struct external_syment |
|
#define SYMESZ 18 |
|
#define AUXENT union external_auxent |
|
#define AUXESZ 18 |
|
#define DBXMASK 0x80 /* for dbx storage mask */ |
|
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK) |
|
|
|
|
|
|
|
/********************** RELOCATION DIRECTIVES **********************/ |
|
|
|
|
|
struct external_reloc { |
|
char r_vaddr[4]; |
|
char r_symndx[4]; |
|
char r_size[1]; |
|
char r_type[1]; |
|
}; |
|
|
|
|
|
#define RELOC struct external_reloc |
|
#define RELSZ 10 |
|
|
|
#define DEFAULT_DATA_SECTION_ALIGNMENT 4 |
|
#define DEFAULT_BSS_SECTION_ALIGNMENT 4 |
|
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4 |
|
/* For new sections we haven't heard of before */ |
|
#define DEFAULT_SECTION_ALIGNMENT 4
|
|
|