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/* IBM RS/6000 "XCOFF64" file definitions for BFD. |
Copyright (C) 2000, 2001, 2002, 2010 Free Software Foundation, Inc. |
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This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
the Free Software Foundation; either version 3 of the License, or |
(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
MA 02110-1301, USA. */ |
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/********************** FILE HEADER **********************/ |
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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[8]; /* file pointer to symtab */ |
char f_opthdr[2]; /* sizeof(optional hdr) */ |
char f_flags[2]; /* flags */ |
char f_nsyms[4]; /* number of symtab entries */ |
}; |
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/* IBM RS/6000. */ |
#define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF */ |
#define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF */ |
#define BADMAG(x) ((x).f_magic != U803XTOCMAGIC && (x).f_magic != U64_TOCMAGIC) |
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#define FILHDR struct external_filehdr |
#define FILHSZ 24 |
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/********************** AOUT "OPTIONAL HEADER" **********************/ |
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typedef struct |
{ |
unsigned char magic[2]; /* type of file */ |
unsigned char vstamp[2]; /* version stamp */ |
unsigned char o_debugger[4]; /* reserved */ |
unsigned char text_start[8]; /* base of text used for this file */ |
unsigned char data_start[8]; /* base of data used for this file */ |
unsigned char o_toc[8]; /* 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_resv2[4]; /* reserved */ |
unsigned char tsize[8]; /* text size bytes, padded to FW bdry */ |
unsigned char dsize[8]; /* initialized data " " */ |
unsigned char bsize[8]; /* uninitialized data " " */ |
unsigned char entry[8]; /* entry pt. */ |
unsigned char o_maxstack[8]; /* max stack size (??) */ |
unsigned char o_maxdata[8]; /* max data size (??) */ |
unsigned char o_resv3[16]; /* reserved */ |
} |
AOUTHDR; |
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#define AOUTSZ 120 |
#define SMALL_AOUTSZ (0) |
#define AOUTHDRSZ 72 |
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/********************** SECTION HEADER **********************/ |
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struct external_scnhdr |
{ |
char s_name[8]; /* section name */ |
char s_paddr[8]; /* physical address, aliased s_nlib */ |
char s_vaddr[8]; /* virtual address */ |
char s_size[8]; /* section size */ |
char s_scnptr[8]; /* file ptr to raw data for section */ |
char s_relptr[8]; /* file ptr to relocation */ |
char s_lnnoptr[8]; /* file ptr to line numbers */ |
char s_nreloc[4]; /* number of relocation entries */ |
char s_nlnno[4]; /* number of line number entries*/ |
char s_flags[4]; /* flags */ |
char s_pad[4]; /* padding */ |
}; |
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#define SCNHDR struct external_scnhdr |
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#define SCNHSZ 72 |
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/********************** LINE NUMBERS **********************/ |
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/* 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. */ |
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struct external_lineno |
{ |
union |
{ |
char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ |
char l_paddr[8]; /* (physical) address of line number */ |
} l_addr; |
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char l_lnno[4]; /* line number */ |
}; |
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#define LINENO struct external_lineno |
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#define LINESZ 12 |
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/********************** SYMBOLS **********************/ |
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#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 */ |
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struct external_syment |
{ |
char e_value[8]; |
char e_offset[4]; |
char e_scnum[2]; |
char e_type[2]; |
char e_sclass[1]; |
char e_numaux[1]; |
}; |
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#define N_BTMASK (017) |
#define N_TMASK (060) |
#define N_BTSHFT (4) |
#define N_TSHIFT (2) |
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union external_auxent |
{ |
struct { |
union { |
struct { |
char x_lnno[4]; /* declaration line number */ |
char x_size[2]; /* str/union/array size */ |
} x_lnsz; |
struct { |
char x_lnnoptr[8];/* ptr to fcn line */ |
char x_fsize[4]; /* size of function */ |
char x_endndx[4]; /* entry ndx past block end */ |
} x_fcn; |
} x_fcnary; |
} x_sym; |
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struct { |
union { |
char x_fname[E_FILNMLEN]; |
struct { |
char x_zeroes[4]; |
char x_offset[4]; |
char x_pad[6]; |
} x_n; |
} x_n; |
unsigned char x_ftype[1]; |
unsigned char x_resv[2]; |
} x_file; |
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struct { |
char x_exptr[8]; |
char x_fsize[4]; |
char x_endndx[4]; |
char x_pad[1]; |
} x_except; |
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struct { |
unsigned char x_scnlen_lo[4]; |
unsigned char x_parmhash[4]; |
unsigned char x_snhash[2]; |
unsigned char x_smtyp[1]; |
unsigned char x_smclas[1]; |
unsigned char x_scnlen_hi[4]; |
unsigned char x_pad[1]; |
} x_csect; |
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struct { |
char x_pad[17]; |
char x_auxtype[1]; |
} x_auxtype; |
}; |
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#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) |
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/* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h. */ |
#define _AUX_EXCEPT 255 |
#define _AUX_FCN 254 |
#define _AUX_SYM 253 |
#define _AUX_FILE 252 |
#define _AUX_CSECT 251 |
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/********************** RELOCATION DIRECTIVES **********************/ |
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struct external_reloc |
{ |
char r_vaddr[8]; |
char r_symndx[4]; |
char r_size[1]; |
char r_type[1]; |
}; |
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#define RELOC struct external_reloc |
#define RELSZ 14 |
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#define DEFAULT_DATA_SECTION_ALIGNMENT 4 |
#define DEFAULT_BSS_SECTION_ALIGNMENT 4 |
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4 |
/* For new sections we havn't heard of before */ |
#define DEFAULT_SECTION_ALIGNMENT 4 |
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/* The ldhdr structure. This appears at the start of the .loader |
section. */ |
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struct external_ldhdr |
{ |
bfd_byte l_version[4]; |
bfd_byte l_nsyms[4]; |
bfd_byte l_nreloc[4]; |
bfd_byte l_istlen[4]; |
bfd_byte l_nimpid[4]; |
bfd_byte l_stlen[4]; |
bfd_byte l_impoff[8]; |
bfd_byte l_stoff[8]; |
bfd_byte l_symoff[8]; |
bfd_byte l_rldoff[8]; |
}; |
#define LDHDRSZ (56) |
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struct external_ldsym |
{ |
bfd_byte l_value[8]; |
bfd_byte l_offset[4]; |
bfd_byte l_scnum[2]; |
bfd_byte l_smtype[1]; |
bfd_byte l_smclas[1]; |
bfd_byte l_ifile[4]; |
bfd_byte l_parm[4]; |
}; |
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#define LDSYMSZ (24) |
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struct external_ldrel |
{ |
bfd_byte l_vaddr[8]; |
bfd_byte l_rtype[2]; |
bfd_byte l_rsecnm[2]; |
bfd_byte l_symndx[4]; |
}; |
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#define LDRELSZ (16) |
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struct external_exceptab |
{ |
union { |
bfd_byte e_symndx[4]; |
bfd_byte e_paddr[8]; |
} e_addr; |
bfd_byte e_lang[1]; |
bfd_byte e_reason[1]; |
}; |
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#define EXCEPTSZ (10) |