source: trunk/libs/newlib/src/include/coff/alpha.h @ 668

Last change on this file since 668 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 11.0 KB
RevLine 
[444]1/* ECOFF support on Alpha machines.
2   coff/ecoff.h must be included before this file.
3
4   Copyright 2001, 2005, 2010 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 3 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,
19   MA 02110-1301, USA.  */
20   
21/********************** FILE HEADER **********************/
22
23struct external_filehdr
24{
25  unsigned char f_magic[2];     /* magic number                 */
26  unsigned char f_nscns[2];     /* number of sections           */
27  unsigned char f_timdat[4];    /* time & date stamp            */
28  unsigned char f_symptr[8];    /* file pointer to symtab       */
29  unsigned char f_nsyms[4];     /* number of symtab entries     */
30  unsigned char f_opthdr[2];    /* sizeof(optional hdr)         */
31  unsigned char f_flags[2];     /* flags                        */
32};
33
34/* Magic numbers are defined in coff/ecoff.h.  */
35#define ALPHA_ECOFF_BADMAG(x) \
36  ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
37
38#define ALPHA_ECOFF_COMPRESSEDMAG(x) \
39  ((x).f_magic == ALPHA_MAGIC_COMPRESSED)
40
41/* The object type is encoded in the f_flags.  */
42#define F_ALPHA_OBJECT_TYPE_MASK        0x3000
43#define F_ALPHA_NO_SHARED               0x1000
44#define F_ALPHA_SHARABLE                0x2000
45#define F_ALPHA_CALL_SHARED             0x3000
46
47#define FILHDR  struct external_filehdr
48#define FILHSZ  24
49
50/********************** AOUT "OPTIONAL HEADER" **********************/
51
52typedef struct external_aouthdr
53{
54  unsigned char magic[2];       /* type of file                         */
55  unsigned char vstamp[2];      /* version stamp                        */
56  unsigned char bldrev[2];      /* ?? */
57  unsigned char padding[2];     /* pad to quadword boundary             */
58  unsigned char tsize[8];       /* text size in bytes                   */
59  unsigned char dsize[8];       /* initialized data "  "                */
60  unsigned char bsize[8];       /* uninitialized data "   "             */
61  unsigned char entry[8];       /* entry pt.                            */
62  unsigned char text_start[8];  /* base of text used for this file */
63  unsigned char data_start[8];  /* base of data used for this file */
64  unsigned char bss_start[8];   /* base of bss used for this file */
65  unsigned char gprmask[4];     /* bitmask of general registers used */
66  unsigned char fprmask[4];     /* bitmask of floating point registers used */
67  unsigned char gp_value[8];    /* value for gp register */
68} AOUTHDR;
69
70/* compute size of a header */
71
72#define AOUTSZ 80
73#define AOUTHDRSZ 80
74
75/********************** SECTION HEADER **********************/
76
77struct external_scnhdr
78{
79  unsigned char s_name[8];      /* section name                 */
80  unsigned char s_paddr[8];     /* physical address, aliased s_nlib */
81  unsigned char s_vaddr[8];     /* virtual address              */
82  unsigned char s_size[8];      /* section size                 */
83  unsigned char s_scnptr[8];    /* file ptr to raw data for section */
84  unsigned char s_relptr[8];    /* file ptr to relocation       */
85  unsigned char s_lnnoptr[8];   /* file ptr to line numbers     */
86  unsigned char s_nreloc[2];    /* number of relocation entries */
87  unsigned char s_nlnno[2];     /* number of line number entries*/
88  unsigned char s_flags[4];     /* flags                        */
89};
90
91#define SCNHDR  struct external_scnhdr
92#define SCNHSZ  64
93
94/********************** RELOCATION DIRECTIVES **********************/
95
96struct external_reloc
97{
98  unsigned char r_vaddr[8];
99  unsigned char r_symndx[4];
100  unsigned char r_bits[4];
101};
102
103#define RELOC struct external_reloc
104#define RELSZ 16
105
106/* Constants to unpack the r_bits field.  The Alpha seems to always be
107   little endian, so I haven't bothered to define big endian variants
108   of these.  */
109
110#define RELOC_BITS0_TYPE_LITTLE                 0xff
111#define RELOC_BITS0_TYPE_SH_LITTLE              0
112
113#define RELOC_BITS1_EXTERN_LITTLE               0x01
114
115#define RELOC_BITS1_OFFSET_LITTLE               0x7e
116#define RELOC_BITS1_OFFSET_SH_LITTLE            1
117
118#define RELOC_BITS1_RESERVED_LITTLE             0x80
119#define RELOC_BITS1_RESERVED_SH_LITTLE          7
120#define RELOC_BITS2_RESERVED_LITTLE             0xff
121#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE     1
122#define RELOC_BITS3_RESERVED_LITTLE             0x03
123#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE     9
124
125#define RELOC_BITS3_SIZE_LITTLE                 0xfc
126#define RELOC_BITS3_SIZE_SH_LITTLE              2
127
128/* The r_type field in a reloc is one of the following values.  */
129#define ALPHA_R_IGNORE          0
130#define ALPHA_R_REFLONG         1
131#define ALPHA_R_REFQUAD         2
132#define ALPHA_R_GPREL32         3
133#define ALPHA_R_LITERAL         4
134#define ALPHA_R_LITUSE          5
135#define ALPHA_R_GPDISP          6
136#define ALPHA_R_BRADDR          7
137#define ALPHA_R_HINT            8
138#define ALPHA_R_SREL16          9
139#define ALPHA_R_SREL32         10
140#define ALPHA_R_SREL64         11
141#define ALPHA_R_OP_PUSH        12
142#define ALPHA_R_OP_STORE       13
143#define ALPHA_R_OP_PSUB        14
144#define ALPHA_R_OP_PRSHIFT     15
145#define ALPHA_R_GPVALUE        16
146#define ALPHA_R_GPRELHIGH      17
147#define ALPHA_R_GPRELLOW       18
148#define ALPHA_R_IMMED          19
149
150/* Overloaded reloc value used by Net- and OpenBSD.  */
151#define ALPHA_R_LITERALSLEAZY  17
152
153/* With ALPHA_R_LITUSE, the r_size field is one of the following values.  */
154#define ALPHA_R_LU_BASE         1
155#define ALPHA_R_LU_BYTOFF       2
156#define ALPHA_R_LU_JSR          3
157
158/* With ALPHA_R_IMMED, the r_size field is one of the following values.  */
159#define ALPHA_R_IMMED_GP_16     1
160#define ALPHA_R_IMMED_GP_HI32   2
161#define ALPHA_R_IMMED_SCN_HI32  3
162#define ALPHA_R_IMMED_BR_HI32   4
163#define ALPHA_R_IMMED_LO32      5
164
165/********************** SYMBOLIC INFORMATION **********************/
166
167/* Written by John Gilmore.  */
168
169/* ECOFF uses COFF-like section structures, but its own symbol format.
170   This file defines the symbol format in fields whose size and alignment
171   will not vary on different host systems.  */
172
173/* File header as a set of bytes */
174
175struct hdr_ext
176{
177        unsigned char   h_magic[2];
178        unsigned char   h_vstamp[2];
179        unsigned char   h_ilineMax[4];
180        unsigned char   h_idnMax[4];
181        unsigned char   h_ipdMax[4];
182        unsigned char   h_isymMax[4];
183        unsigned char   h_ioptMax[4];
184        unsigned char   h_iauxMax[4];
185        unsigned char   h_issMax[4];
186        unsigned char   h_issExtMax[4];
187        unsigned char   h_ifdMax[4];
188        unsigned char   h_crfd[4];
189        unsigned char   h_iextMax[4];
190        unsigned char   h_cbLine[8];
191        unsigned char   h_cbLineOffset[8];
192        unsigned char   h_cbDnOffset[8];
193        unsigned char   h_cbPdOffset[8];
194        unsigned char   h_cbSymOffset[8];
195        unsigned char   h_cbOptOffset[8];
196        unsigned char   h_cbAuxOffset[8];
197        unsigned char   h_cbSsOffset[8];
198        unsigned char   h_cbSsExtOffset[8];
199        unsigned char   h_cbFdOffset[8];
200        unsigned char   h_cbRfdOffset[8];
201        unsigned char   h_cbExtOffset[8];
202};
203
204/* File descriptor external record */
205
206struct fdr_ext
207{
208        unsigned char   f_adr[8];
209        unsigned char   f_cbLineOffset[8];
210        unsigned char   f_cbLine[8];
211        unsigned char   f_cbSs[8];
212        unsigned char   f_rss[4];
213        unsigned char   f_issBase[4];
214        unsigned char   f_isymBase[4];
215        unsigned char   f_csym[4];
216        unsigned char   f_ilineBase[4];
217        unsigned char   f_cline[4];
218        unsigned char   f_ioptBase[4];
219        unsigned char   f_copt[4];
220        unsigned char   f_ipdFirst[4];
221        unsigned char   f_cpd[4];
222        unsigned char   f_iauxBase[4];
223        unsigned char   f_caux[4];
224        unsigned char   f_rfdBase[4];
225        unsigned char   f_crfd[4];
226        unsigned char   f_bits1[1];
227        unsigned char   f_bits2[3];
228        unsigned char   f_padding[4];
229};
230
231#define FDR_BITS1_LANG_BIG              0xF8
232#define FDR_BITS1_LANG_SH_BIG           3
233#define FDR_BITS1_LANG_LITTLE           0x1F
234#define FDR_BITS1_LANG_SH_LITTLE        0
235
236#define FDR_BITS1_FMERGE_BIG            0x04
237#define FDR_BITS1_FMERGE_LITTLE         0x20
238
239#define FDR_BITS1_FREADIN_BIG           0x02
240#define FDR_BITS1_FREADIN_LITTLE        0x40
241
242#define FDR_BITS1_FBIGENDIAN_BIG        0x01
243#define FDR_BITS1_FBIGENDIAN_LITTLE     0x80
244
245#define FDR_BITS2_GLEVEL_BIG            0xC0
246#define FDR_BITS2_GLEVEL_SH_BIG         6
247#define FDR_BITS2_GLEVEL_LITTLE         0x03
248#define FDR_BITS2_GLEVEL_SH_LITTLE      0
249
250/* We ignore the `reserved' field in bits2. */
251
252/* Procedure descriptor external record */
253
254struct pdr_ext {
255        unsigned char   p_adr[8];
256        unsigned char   p_cbLineOffset[8];
257        unsigned char   p_isym[4];
258        unsigned char   p_iline[4];
259        unsigned char   p_regmask[4];
260        unsigned char   p_regoffset[4];
261        unsigned char   p_iopt[4];
262        unsigned char   p_fregmask[4];
263        unsigned char   p_fregoffset[4];
264        unsigned char   p_frameoffset[4];
265        unsigned char   p_lnLow[4];
266        unsigned char   p_lnHigh[4];
267        unsigned char   p_gp_prologue[1];
268        unsigned char   p_bits1[1];
269        unsigned char   p_bits2[1];
270        unsigned char   p_localoff[1];
271        unsigned char   p_framereg[2];
272        unsigned char   p_pcreg[2];
273};
274
275#define PDR_BITS1_GP_USED_BIG           0x80
276#define PDR_BITS1_REG_FRAME_BIG         0x40
277#define PDR_BITS1_PROF_BIG              0x20
278#define PDR_BITS1_RESERVED_BIG          0x1f
279#define PDR_BITS1_RESERVED_SH_LEFT_BIG  8
280#define PDR_BITS2_RESERVED_BIG          0xff
281#define PDR_BITS2_RESERVED_SH_BIG       0
282
283#define PDR_BITS1_GP_USED_LITTLE        0x01
284#define PDR_BITS1_REG_FRAME_LITTLE      0x02
285#define PDR_BITS1_PROF_LITTLE           0x04
286#define PDR_BITS1_RESERVED_LITTLE       0xf8
287#define PDR_BITS1_RESERVED_SH_LITTLE    3
288#define PDR_BITS2_RESERVED_LITTLE       0xff
289#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
290
291/* Line numbers */
292
293struct line_ext {
294        unsigned char   l_line[4];
295};
296
297/* Symbol external record */
298
299struct sym_ext {
300        unsigned char   s_value[8];
301        unsigned char   s_iss[4];
302        unsigned char   s_bits1[1];
303        unsigned char   s_bits2[1];
304        unsigned char   s_bits3[1];
305        unsigned char   s_bits4[1];
306};
307
308#define SYM_BITS1_ST_BIG                0xFC
309#define SYM_BITS1_ST_SH_BIG             2
310#define SYM_BITS1_ST_LITTLE             0x3F
311#define SYM_BITS1_ST_SH_LITTLE          0
312
313#define SYM_BITS1_SC_BIG                0x03
314#define SYM_BITS1_SC_SH_LEFT_BIG        3
315#define SYM_BITS1_SC_LITTLE             0xC0
316#define SYM_BITS1_SC_SH_LITTLE          6
317
318#define SYM_BITS2_SC_BIG                0xE0
319#define SYM_BITS2_SC_SH_BIG             5
320#define SYM_BITS2_SC_LITTLE             0x07
321#define SYM_BITS2_SC_SH_LEFT_LITTLE     2
322
323#define SYM_BITS2_RESERVED_BIG          0x10
324#define SYM_BITS2_RESERVED_LITTLE       0x08
325
326#define SYM_BITS2_INDEX_BIG             0x0F
327#define SYM_BITS2_INDEX_SH_LEFT_BIG     16
328#define SYM_BITS2_INDEX_LITTLE          0xF0
329#define SYM_BITS2_INDEX_SH_LITTLE       4
330
331#define SYM_BITS3_INDEX_SH_LEFT_BIG     8
332#define SYM_BITS3_INDEX_SH_LEFT_LITTLE  4
333
334#define SYM_BITS4_INDEX_SH_LEFT_BIG     0
335#define SYM_BITS4_INDEX_SH_LEFT_LITTLE  12
336
337/* External symbol external record */
338
339struct ext_ext {
340        struct  sym_ext es_asym;
341        unsigned char   es_bits1[1];
342        unsigned char   es_bits2[3];
343        unsigned char   es_ifd[4];
344};
345
346#define EXT_BITS1_JMPTBL_BIG            0x80
347#define EXT_BITS1_JMPTBL_LITTLE         0x01
348
349#define EXT_BITS1_COBOL_MAIN_BIG        0x40
350#define EXT_BITS1_COBOL_MAIN_LITTLE     0x02
351
352#define EXT_BITS1_WEAKEXT_BIG           0x20
353#define EXT_BITS1_WEAKEXT_LITTLE        0x04
354
355/* Dense numbers external record */
356
357struct dnr_ext {
358        unsigned char   d_rfd[4];
359        unsigned char   d_index[4];
360};
361
362/* Relative file descriptor */
363
364struct rfd_ext {
365  unsigned char rfd[4];
366};
367
368/* Optimizer symbol external record */
369
370struct opt_ext {
371  unsigned char o_bits1[1];
372  unsigned char o_bits2[1];
373  unsigned char o_bits3[1];
374  unsigned char o_bits4[1];
375  struct rndx_ext o_rndx;
376  unsigned char o_offset[4];
377};
378
379#define OPT_BITS2_VALUE_SH_LEFT_BIG     16
380#define OPT_BITS2_VALUE_SH_LEFT_LITTLE  0
381
382#define OPT_BITS3_VALUE_SH_LEFT_BIG     8
383#define OPT_BITS3_VALUE_SH_LEFT_LITTLE  8
384
385#define OPT_BITS4_VALUE_SH_LEFT_BIG     0
386#define OPT_BITS4_VALUE_SH_LEFT_LITTLE  16
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