source: umon/main/common/coff.h @ 87db514

/**************************************************************************
 *
 * Copyright (c) 2013 Alcatel-Lucent
 * 
 * Alcatel Lucent licenses this file to You under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License.  A copy of the License is contained the
 * file LICENSE at the top level of this repository.
 * You may also obtain a copy of the License at:
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 **************************************************************************
 *
 * coff.h:
 *
 * Header file used for the COFF file format of TFS.
 *
 * Original author:     Ed Sutter (ed.sutter@alcatel-lucent.com)
 *
 */
#ifndef _COFF_H_
#define _COFF_H_

/* 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 */
};

#define FILHDR  struct filehdr
#define FILHSZ  sizeof(FILHDR)
#define F_EXEC  0000002

/* Optional header... */
struct aouthdr {
        short   magic;  
        short   vstamp;         /* version stamp                        */
        long    tsize;          /* text size in bytes, padded to FW
                                                   bdry                                 */
        long    dsize;          /* initialized data "  "                */
        long    bsize;          /* uninitialized data "   "             */
        long    entry;          /* entry pt.                            */
        long    text_start;     /* base of text used for this file      */
        long    data_start;     /* base of data used for this file      */
};

#define AOUTHDR struct aouthdr
#define AOUTHSZ sizeof(AOUTHDR)

struct scnhdr {
        char            s_name[8];      /* section name */
        long            s_paddr;        /* physical address */
        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 */
};

#define SCNHDR  struct scnhdr
#define SCNHSZ  sizeof(SCNHDR)

/*
 * The low 4 bits of s_flags is used as a section "type"
 */

#define STYP_REG        0x00            /* "regular" section:
                                                                        allocated, relocated, loaded */
#define STYP_DSECT      0x01            /* "dummy" section:
                                                                        not allocated, relocated,
                                                                        not loaded */
#define STYP_NOLOAD     0x02            /* "noload" section:
                                                                        allocated, relocated,
                                                                         not loaded */
#define STYP_GROUP      0x04            /* "grouped" section:
                                                                        formed of input sections */
#define STYP_PAD        0x08            /* "padding" section:
                                                                        not allocated, not relocated,
                                                                         loaded */
#define STYP_COPY       0x10            /* "copy" section:
                                                                        for decision function used
                                                                        by field update;  not
                                                                        allocated, not relocated,
                                                                        loaded;  reloc & lineno
                                                                        entries processed normally */
#define STYP_TEXT       0x20            /* section contains text only */
#define STYP_DATA       0x40            /* section contains data only */
#define STYP_BSS        0x80            /* section contains bss only */
#define STYP_INFO       0x0200
#define STYP_LIT        0x8020
#define STYP_ABS        0x4000
#define STYP_BSSREG     0x1200
#define STYP_ENVIR      0x2200

#define ISLOADABLE(flags) \
        (flags & (STYP_ABS | STYP_TEXT | STYP_LIT | STYP_DATA))
#define ISBSS(flags) (flags & (STYP_BSS))
#define ISTEXT(flags) (flags & (STYP_TEXT))
#endif