1 /* Basic coff information for the PowerPC
3 * Based on coff/rs6000.h, coff/i386.h and others.
5 * Initial release: Kim Knuttila (krk@cygnus.com)
8 /********************** FILE HEADER **********************/
10 struct external_filehdr {
11 char f_magic[2]; /* magic number */
12 char f_nscns[2]; /* number of sections */
13 char f_timdat[4]; /* time & date stamp */
14 char f_symptr[4]; /* file pointer to symtab */
15 char f_nsyms[4]; /* number of symtab entries */
16 char f_opthdr[2]; /* sizeof(optional hdr) */
17 char f_flags[2]; /* flags */
20 #define FILHDR struct external_filehdr
24 * F_RELFLG relocation info stripped from file
25 * F_EXEC file is executable (no unresolved external references)
26 * F_LNNO line numbers stripped from file
27 * F_LSYMS local symbols stripped from file
28 * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
31 #define F_RELFLG (0x0001)
32 #define F_EXEC (0x0002)
33 #define F_LNNO (0x0004)
34 #define F_LSYMS (0x0008)
36 /* extra NT defines */
37 #define PPCMAGIC 0760 /* peeked on aa PowerPC Windows NT box */
38 #define DOSMAGIC 0x5a4d /* from arm.h, i386.h */
39 #define NT_SIGNATURE 0x00004550 /* from arm.h, i386.h */
42 #define IMAGE_NT_OPTIONAL_HDR_MAGIC 0x10b
44 #define PPCBADMAG(x) ((x).f_magic != PPCMAGIC)
46 /********************** AOUT "OPTIONAL HEADER" **********************/
50 char magic[2]; /* type of file */
51 char vstamp[2]; /* version stamp */
52 char tsize[4]; /* text size in bytes, padded to FW bdry*/
53 char dsize[4]; /* initialized data " " */
54 char bsize[4]; /* uninitialized data " " */
55 char entry[4]; /* entry pt. */
56 char text_start[4]; /* base of text used for this file */
57 char data_start[4]; /* base of data used for this file */
64 /********************** SECTION HEADER **********************/
66 struct external_scnhdr {
67 char s_name[8]; /* section name */
68 char s_paddr[4]; /* physical address, aliased s_nlib */
69 char s_vaddr[4]; /* virtual address */
70 char s_size[4]; /* section size */
71 char s_scnptr[4]; /* file ptr to raw data for section */
72 char s_relptr[4]; /* file ptr to relocation */
73 char s_lnnoptr[4]; /* file ptr to line numbers */
74 char s_nreloc[2]; /* number of relocation entries */
75 char s_nlnno[2]; /* number of line number entries */
76 char s_flags[4]; /* flags */
79 #define SCNHDR struct external_scnhdr
83 * names of "special" sections
88 #define _COMMENT ".comment"
91 /********************** LINE NUMBERS **********************/
93 /* 1 line number entry for every "breakpointable" source line in a section.
94 * Line numbers are grouped on a per function basis; first entry in a function
95 * grouping will have l_lnno = 0 and in place of physical address will be the
96 * symbol table index of the function name.
98 struct external_lineno {
100 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0 */
101 char l_paddr[4]; /* (physical) address of line number */
103 char l_lnno[2]; /* line number */
106 #define LINENO struct external_lineno
109 /********************** SYMBOLS **********************/
111 #define E_SYMNMLEN 8 /* # characters in a symbol name */
113 /* Allow the file name length to be overridden in the including file */
115 #define E_FILNMLEN 14
118 #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
120 struct external_syment
123 char e_name[E_SYMNMLEN];
136 #define SYMENT struct external_syment
139 #define N_BTMASK (0xf)
140 #define N_TMASK (0x30)
144 union external_auxent {
146 char x_tagndx[4]; /* str, un, or enum tag indx */
149 char x_lnno[2]; /* declaration line number */
150 char x_size[2]; /* str/union/array size */
152 char x_fsize[4]; /* size of function */
155 struct { /* if ISFCN, tag, or .bb */
156 char x_lnnoptr[4]; /* ptr to fcn line # */
157 char x_endndx[4]; /* entry ndx past block end */
159 struct { /* if ISARY, up to 4 dimen. */
160 char x_dimen[E_DIMNUM][2];
163 char x_tvndx[2]; /* tv index */
167 char x_fname[E_FILNMLEN];
175 char x_scnlen[4]; /* section length */
176 char x_nreloc[2]; /* # relocation entries */
177 char x_nlinno[2]; /* # line numbers */
178 char x_checksum[4]; /* section COMDAT checksum */
179 char x_associated[2]; /* COMDAT associated section index */
180 char x_comdat[1]; /* COMDAT selection number */
184 #define AUXENT union external_auxent
187 #define _ETEXT "etext"
189 /********************** RELOCATION DIRECTIVES **********************/
191 struct external_reloc {
197 #define RELOC struct external_reloc