225 lines
6.3 KiB
C
225 lines
6.3 KiB
C
/* IBM RS/6000 "XCOFF64" file definitions for BFD.
|
|
|
|
Copyright 2000 Free Software Foundation, Inc.
|
|
|
|
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 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
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.
|
|
|
|
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#define DO_NOT_DEFINE_AOUTHDR
|
|
#define DO_NOT_DEFINE_SCNHDR
|
|
#define DO_NOT_DEFINE_LINENO
|
|
#define DO_NOT_DEFINE_AUXENT
|
|
#include "coff/external.h"
|
|
|
|
/* IBM RS/6000 */
|
|
#define U803XTOCMAGIC 0757 /* readonly text segments and TOC, XCOFF64 */
|
|
|
|
#define BADMAG(x) ((x).f_magic != U803XTOCMAGIC)
|
|
|
|
/********************** AOUT "OPTIONAL HEADER" **********************/
|
|
|
|
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;
|
|
|
|
#define AOUTSZ 120
|
|
#define SMALL_AOUTSZ (0)
|
|
#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[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 */
|
|
};
|
|
|
|
/*
|
|
* 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 72
|
|
|
|
/* 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[8];/* function name symbol index, iff l_lnno == 0*/
|
|
char l_paddr[8]; /* (physical) address of line number */
|
|
} l_addr;
|
|
|
|
char l_lnno[4]; /* line number */
|
|
};
|
|
|
|
#define LINENO struct external_lineno
|
|
#define LINESZ 12
|
|
|
|
|
|
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;
|
|
|
|
union
|
|
{
|
|
char x_fname[E_FILNMLEN];
|
|
|
|
struct
|
|
{
|
|
char x_zeroes[4];
|
|
char x_offset[4];
|
|
char x_pad[6];
|
|
unsigned char x_ftype[1];
|
|
unsigned char x_resv[2];
|
|
} x_n;
|
|
|
|
} x_file;
|
|
|
|
struct
|
|
{
|
|
char x_exptr[8];
|
|
char x_fsize[4];
|
|
char x_endndx[4];
|
|
char x_pad[1];
|
|
} x_except;
|
|
|
|
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;
|
|
|
|
struct
|
|
{
|
|
char x_pad[17];
|
|
char x_auxtype[1];
|
|
} x_auxtype;
|
|
};
|
|
|
|
#define AUXENT union external_auxent
|
|
#define AUXESZ 18
|
|
|
|
#define DBXMASK 0x80 /* for dbx storage mask */
|
|
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
|
|
|
|
/* 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
|
|
|
|
/********************** RELOCATION DIRECTIVES **********************/
|
|
|
|
struct external_reloc
|
|
{
|
|
char r_vaddr[8];
|
|
char r_symndx[4];
|
|
char r_size[1];
|
|
char r_type[1];
|
|
};
|
|
|
|
#define RELOC struct external_reloc
|
|
#define RELSZ 14
|
|
|
|
#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
|