Annotation of src/external/gpl3/binutils/dist/include/coff/alpha.h, Revision 1.1.1.1
1.1 skrll 1: /* ECOFF support on Alpha machines.
2: coff/ecoff.h must be included before this file.
3:
4: Copyright 2001, 2005 Free Software Foundation, Inc.
5:
6: This program is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 2 of the License, or
9: (at your option) any later version.
10:
11: This program is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with this program; if not, write to the Free Software
18: Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
19:
20: /********************** FILE HEADER **********************/
21:
22: struct external_filehdr
23: {
24: unsigned char f_magic[2]; /* magic number */
25: unsigned char f_nscns[2]; /* number of sections */
26: unsigned char f_timdat[4]; /* time & date stamp */
27: unsigned char f_symptr[8]; /* file pointer to symtab */
28: unsigned char f_nsyms[4]; /* number of symtab entries */
29: unsigned char f_opthdr[2]; /* sizeof(optional hdr) */
30: unsigned char f_flags[2]; /* flags */
31: };
32:
33: /* Magic numbers are defined in coff/ecoff.h. */
34: #define ALPHA_ECOFF_BADMAG(x) \
35: ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
36:
37: #define ALPHA_ECOFF_COMPRESSEDMAG(x) \
38: ((x).f_magic == ALPHA_MAGIC_COMPRESSED)
39:
40: /* The object type is encoded in the f_flags. */
41: #define F_ALPHA_OBJECT_TYPE_MASK 0x3000
42: #define F_ALPHA_NO_SHARED 0x1000
43: #define F_ALPHA_SHARABLE 0x2000
44: #define F_ALPHA_CALL_SHARED 0x3000
45:
46: #define FILHDR struct external_filehdr
47: #define FILHSZ 24
48:
49: /********************** AOUT "OPTIONAL HEADER" **********************/
50:
51: typedef struct external_aouthdr
52: {
53: unsigned char magic[2]; /* type of file */
54: unsigned char vstamp[2]; /* version stamp */
55: unsigned char bldrev[2]; /* ?? */
56: unsigned char padding[2]; /* pad to quadword boundary */
57: unsigned char tsize[8]; /* text size in bytes */
58: unsigned char dsize[8]; /* initialized data " " */
59: unsigned char bsize[8]; /* uninitialized data " " */
60: unsigned char entry[8]; /* entry pt. */
61: unsigned char text_start[8]; /* base of text used for this file */
62: unsigned char data_start[8]; /* base of data used for this file */
63: unsigned char bss_start[8]; /* base of bss used for this file */
64: unsigned char gprmask[4]; /* bitmask of general registers used */
65: unsigned char fprmask[4]; /* bitmask of floating point registers used */
66: unsigned char gp_value[8]; /* value for gp register */
67: } AOUTHDR;
68:
69: /* compute size of a header */
70:
71: #define AOUTSZ 80
72: #define AOUTHDRSZ 80
73:
74: /********************** SECTION HEADER **********************/
75:
76: struct external_scnhdr
77: {
78: unsigned char s_name[8]; /* section name */
79: unsigned char s_paddr[8]; /* physical address, aliased s_nlib */
80: unsigned char s_vaddr[8]; /* virtual address */
81: unsigned char s_size[8]; /* section size */
82: unsigned char s_scnptr[8]; /* file ptr to raw data for section */
83: unsigned char s_relptr[8]; /* file ptr to relocation */
84: unsigned char s_lnnoptr[8]; /* file ptr to line numbers */
85: unsigned char s_nreloc[2]; /* number of relocation entries */
86: unsigned char s_nlnno[2]; /* number of line number entries*/
87: unsigned char s_flags[4]; /* flags */
88: };
89:
90: #define SCNHDR struct external_scnhdr
91: #define SCNHSZ 64
92:
93: /********************** RELOCATION DIRECTIVES **********************/
94:
95: struct external_reloc
96: {
97: unsigned char r_vaddr[8];
98: unsigned char r_symndx[4];
99: unsigned char r_bits[4];
100: };
101:
102: #define RELOC struct external_reloc
103: #define RELSZ 16
104:
105: /* Constants to unpack the r_bits field. The Alpha seems to always be
106: little endian, so I haven't bothered to define big endian variants
107: of these. */
108:
109: #define RELOC_BITS0_TYPE_LITTLE 0xff
110: #define RELOC_BITS0_TYPE_SH_LITTLE 0
111:
112: #define RELOC_BITS1_EXTERN_LITTLE 0x01
113:
114: #define RELOC_BITS1_OFFSET_LITTLE 0x7e
115: #define RELOC_BITS1_OFFSET_SH_LITTLE 1
116:
117: #define RELOC_BITS1_RESERVED_LITTLE 0x80
118: #define RELOC_BITS1_RESERVED_SH_LITTLE 7
119: #define RELOC_BITS2_RESERVED_LITTLE 0xff
120: #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1
121: #define RELOC_BITS3_RESERVED_LITTLE 0x03
122: #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9
123:
124: #define RELOC_BITS3_SIZE_LITTLE 0xfc
125: #define RELOC_BITS3_SIZE_SH_LITTLE 2
126:
127: /* The r_type field in a reloc is one of the following values. */
128: #define ALPHA_R_IGNORE 0
129: #define ALPHA_R_REFLONG 1
130: #define ALPHA_R_REFQUAD 2
131: #define ALPHA_R_GPREL32 3
132: #define ALPHA_R_LITERAL 4
133: #define ALPHA_R_LITUSE 5
134: #define ALPHA_R_GPDISP 6
135: #define ALPHA_R_BRADDR 7
136: #define ALPHA_R_HINT 8
137: #define ALPHA_R_SREL16 9
138: #define ALPHA_R_SREL32 10
139: #define ALPHA_R_SREL64 11
140: #define ALPHA_R_OP_PUSH 12
141: #define ALPHA_R_OP_STORE 13
142: #define ALPHA_R_OP_PSUB 14
143: #define ALPHA_R_OP_PRSHIFT 15
144: #define ALPHA_R_GPVALUE 16
145: #define ALPHA_R_GPRELHIGH 17
146: #define ALPHA_R_GPRELLOW 18
147: #define ALPHA_R_IMMED 19
148:
149: /* Overloaded reloc value used by Net- and OpenBSD. */
150: #define ALPHA_R_LITERALSLEAZY 17
151:
152: /* With ALPHA_R_LITUSE, the r_size field is one of the following values. */
153: #define ALPHA_R_LU_BASE 1
154: #define ALPHA_R_LU_BYTOFF 2
155: #define ALPHA_R_LU_JSR 3
156:
157: /* With ALPHA_R_IMMED, the r_size field is one of the following values. */
158: #define ALPHA_R_IMMED_GP_16 1
159: #define ALPHA_R_IMMED_GP_HI32 2
160: #define ALPHA_R_IMMED_SCN_HI32 3
161: #define ALPHA_R_IMMED_BR_HI32 4
162: #define ALPHA_R_IMMED_LO32 5
163:
164: /********************** SYMBOLIC INFORMATION **********************/
165:
166: /* Written by John Gilmore. */
167:
168: /* ECOFF uses COFF-like section structures, but its own symbol format.
169: This file defines the symbol format in fields whose size and alignment
170: will not vary on different host systems. */
171:
172: /* File header as a set of bytes */
173:
174: struct hdr_ext
175: {
176: unsigned char h_magic[2];
177: unsigned char h_vstamp[2];
178: unsigned char h_ilineMax[4];
179: unsigned char h_idnMax[4];
180: unsigned char h_ipdMax[4];
181: unsigned char h_isymMax[4];
182: unsigned char h_ioptMax[4];
183: unsigned char h_iauxMax[4];
184: unsigned char h_issMax[4];
185: unsigned char h_issExtMax[4];
186: unsigned char h_ifdMax[4];
187: unsigned char h_crfd[4];
188: unsigned char h_iextMax[4];
189: unsigned char h_cbLine[8];
190: unsigned char h_cbLineOffset[8];
191: unsigned char h_cbDnOffset[8];
192: unsigned char h_cbPdOffset[8];
193: unsigned char h_cbSymOffset[8];
194: unsigned char h_cbOptOffset[8];
195: unsigned char h_cbAuxOffset[8];
196: unsigned char h_cbSsOffset[8];
197: unsigned char h_cbSsExtOffset[8];
198: unsigned char h_cbFdOffset[8];
199: unsigned char h_cbRfdOffset[8];
200: unsigned char h_cbExtOffset[8];
201: };
202:
203: /* File descriptor external record */
204:
205: struct fdr_ext
206: {
207: unsigned char f_adr[8];
208: unsigned char f_cbLineOffset[8];
209: unsigned char f_cbLine[8];
210: unsigned char f_cbSs[8];
211: unsigned char f_rss[4];
212: unsigned char f_issBase[4];
213: unsigned char f_isymBase[4];
214: unsigned char f_csym[4];
215: unsigned char f_ilineBase[4];
216: unsigned char f_cline[4];
217: unsigned char f_ioptBase[4];
218: unsigned char f_copt[4];
219: unsigned char f_ipdFirst[4];
220: unsigned char f_cpd[4];
221: unsigned char f_iauxBase[4];
222: unsigned char f_caux[4];
223: unsigned char f_rfdBase[4];
224: unsigned char f_crfd[4];
225: unsigned char f_bits1[1];
226: unsigned char f_bits2[3];
227: unsigned char f_padding[4];
228: };
229:
230: #define FDR_BITS1_LANG_BIG 0xF8
231: #define FDR_BITS1_LANG_SH_BIG 3
232: #define FDR_BITS1_LANG_LITTLE 0x1F
233: #define FDR_BITS1_LANG_SH_LITTLE 0
234:
235: #define FDR_BITS1_FMERGE_BIG 0x04
236: #define FDR_BITS1_FMERGE_LITTLE 0x20
237:
238: #define FDR_BITS1_FREADIN_BIG 0x02
239: #define FDR_BITS1_FREADIN_LITTLE 0x40
240:
241: #define FDR_BITS1_FBIGENDIAN_BIG 0x01
242: #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
243:
244: #define FDR_BITS2_GLEVEL_BIG 0xC0
245: #define FDR_BITS2_GLEVEL_SH_BIG 6
246: #define FDR_BITS2_GLEVEL_LITTLE 0x03
247: #define FDR_BITS2_GLEVEL_SH_LITTLE 0
248:
249: /* We ignore the `reserved' field in bits2. */
250:
251: /* Procedure descriptor external record */
252:
253: struct pdr_ext {
254: unsigned char p_adr[8];
255: unsigned char p_cbLineOffset[8];
256: unsigned char p_isym[4];
257: unsigned char p_iline[4];
258: unsigned char p_regmask[4];
259: unsigned char p_regoffset[4];
260: unsigned char p_iopt[4];
261: unsigned char p_fregmask[4];
262: unsigned char p_fregoffset[4];
263: unsigned char p_frameoffset[4];
264: unsigned char p_lnLow[4];
265: unsigned char p_lnHigh[4];
266: unsigned char p_gp_prologue[1];
267: unsigned char p_bits1[1];
268: unsigned char p_bits2[1];
269: unsigned char p_localoff[1];
270: unsigned char p_framereg[2];
271: unsigned char p_pcreg[2];
272: };
273:
274: #define PDR_BITS1_GP_USED_BIG 0x80
275: #define PDR_BITS1_REG_FRAME_BIG 0x40
276: #define PDR_BITS1_PROF_BIG 0x20
277: #define PDR_BITS1_RESERVED_BIG 0x1f
278: #define PDR_BITS1_RESERVED_SH_LEFT_BIG 8
279: #define PDR_BITS2_RESERVED_BIG 0xff
280: #define PDR_BITS2_RESERVED_SH_BIG 0
281:
282: #define PDR_BITS1_GP_USED_LITTLE 0x01
283: #define PDR_BITS1_REG_FRAME_LITTLE 0x02
284: #define PDR_BITS1_PROF_LITTLE 0x04
285: #define PDR_BITS1_RESERVED_LITTLE 0xf8
286: #define PDR_BITS1_RESERVED_SH_LITTLE 3
287: #define PDR_BITS2_RESERVED_LITTLE 0xff
288: #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
289:
290: /* Line numbers */
291:
292: struct line_ext {
293: unsigned char l_line[4];
294: };
295:
296: /* Symbol external record */
297:
298: struct sym_ext {
299: unsigned char s_value[8];
300: unsigned char s_iss[4];
301: unsigned char s_bits1[1];
302: unsigned char s_bits2[1];
303: unsigned char s_bits3[1];
304: unsigned char s_bits4[1];
305: };
306:
307: #define SYM_BITS1_ST_BIG 0xFC
308: #define SYM_BITS1_ST_SH_BIG 2
309: #define SYM_BITS1_ST_LITTLE 0x3F
310: #define SYM_BITS1_ST_SH_LITTLE 0
311:
312: #define SYM_BITS1_SC_BIG 0x03
313: #define SYM_BITS1_SC_SH_LEFT_BIG 3
314: #define SYM_BITS1_SC_LITTLE 0xC0
315: #define SYM_BITS1_SC_SH_LITTLE 6
316:
317: #define SYM_BITS2_SC_BIG 0xE0
318: #define SYM_BITS2_SC_SH_BIG 5
319: #define SYM_BITS2_SC_LITTLE 0x07
320: #define SYM_BITS2_SC_SH_LEFT_LITTLE 2
321:
322: #define SYM_BITS2_RESERVED_BIG 0x10
323: #define SYM_BITS2_RESERVED_LITTLE 0x08
324:
325: #define SYM_BITS2_INDEX_BIG 0x0F
326: #define SYM_BITS2_INDEX_SH_LEFT_BIG 16
327: #define SYM_BITS2_INDEX_LITTLE 0xF0
328: #define SYM_BITS2_INDEX_SH_LITTLE 4
329:
330: #define SYM_BITS3_INDEX_SH_LEFT_BIG 8
331: #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
332:
333: #define SYM_BITS4_INDEX_SH_LEFT_BIG 0
334: #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
335:
336: /* External symbol external record */
337:
338: struct ext_ext {
339: struct sym_ext es_asym;
340: unsigned char es_bits1[1];
341: unsigned char es_bits2[3];
342: unsigned char es_ifd[4];
343: };
344:
345: #define EXT_BITS1_JMPTBL_BIG 0x80
346: #define EXT_BITS1_JMPTBL_LITTLE 0x01
347:
348: #define EXT_BITS1_COBOL_MAIN_BIG 0x40
349: #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
350:
351: #define EXT_BITS1_WEAKEXT_BIG 0x20
352: #define EXT_BITS1_WEAKEXT_LITTLE 0x04
353:
354: /* Dense numbers external record */
355:
356: struct dnr_ext {
357: unsigned char d_rfd[4];
358: unsigned char d_index[4];
359: };
360:
361: /* Relative file descriptor */
362:
363: struct rfd_ext {
364: unsigned char rfd[4];
365: };
366:
367: /* Optimizer symbol external record */
368:
369: struct opt_ext {
370: unsigned char o_bits1[1];
371: unsigned char o_bits2[1];
372: unsigned char o_bits3[1];
373: unsigned char o_bits4[1];
374: struct rndx_ext o_rndx;
375: unsigned char o_offset[4];
376: };
377:
378: #define OPT_BITS2_VALUE_SH_LEFT_BIG 16
379: #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
380:
381: #define OPT_BITS3_VALUE_SH_LEFT_BIG 8
382: #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
383:
384: #define OPT_BITS4_VALUE_SH_LEFT_BIG 0
385: #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
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