1 /* HP PA-RISC SOM object file format: definitions internal to BFD.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
4 Contributed by the Center for Software Science at the
5 University of Utah (pa-gdb-bugs@cs.utah.edu).
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #define BYTES_IN_WORD 4
36 /* HP PA-RISC relocation types */
38 enum hppa_reloc_field_selector_type
57 /* /usr/include/reloc.h defines these to constants. We want to use
58 them in enums, so #undef them before we start using them. We might
59 be able to fix this another way by simply managing not to include
60 /usr/include/reloc.h, but currently GDB picks up these defines
84 /* for compatibility */
85 enum hppa_reloc_field_selector_type_alt
88 e_lssel = R_HPPA_LSSEL,
89 e_rssel = R_HPPA_RSSEL,
92 e_ldsel = R_HPPA_LDSEL,
93 e_rdsel = R_HPPA_RDSEL,
94 e_lrsel = R_HPPA_LRSEL,
95 e_rrsel = R_HPPA_RRSEL,
97 e_lpsel = R_HPPA_LPSEL,
98 e_rpsel = R_HPPA_RPSEL,
100 e_ltsel = R_HPPA_LTSEL,
101 e_rtsel = R_HPPA_RTSEL
104 enum hppa_reloc_expr_type
114 /* for compatibility */
115 enum hppa_reloc_expr_type_alt
117 e_one = R_HPPA_E_ONE,
118 e_two = R_HPPA_E_TWO,
119 e_pcrel = R_HPPA_E_PCREL,
120 e_con = R_HPPA_E_CON,
121 e_plabel = R_HPPA_E_PLABEL,
126 /* Relocations for function calls must be accompanied by parameter
127 relocation bits. These bits describe exactly where the caller has
128 placed the function's arguments and where it expects to find a return
131 Both ELF and SOM encode this information within the addend field
132 of the call relocation. (Note this could break very badly if one
133 was to make a call like bl foo + 0x12345678).
135 The high order 10 bits contain parameter relocation information,
136 the low order 22 bits contain the constant offset. */
138 #define HPPA_R_ARG_RELOC(a) (((a) >> 22) & 0x3FF)
139 #define HPPA_R_CONSTANT(a) ((((int)(a)) << 10) >> 10)
140 #define HPPA_R_ADDEND(r,c) (((r) << 22) + ((c) & 0x3FFFFF))
142 /* Some functions to manipulate PA instructions. */
143 static INLINE unsigned int
147 return (((x & 1) << 2) | ((x & 6) >> 1)) & 7;
151 dis_assemble_3 (x, r)
155 *r = (((x & 4) >> 2) | ((x & 3) << 1)) & 7;
158 static INLINE unsigned int
162 return (((y & 1) << 11) | ((x & 1) << 10) | ((x & 0x7fe) >> 1)) & 0xfff;
166 dis_assemble_12 (as12, x, y)
170 *y = (as12 & 0x800) >> 11;
171 *x = ((as12 & 0x3ff) << 1) | ((as12 & 0x400) >> 10);
174 static INLINE unsigned long
175 assemble_17 (x, y, z)
176 unsigned int x, y, z;
180 temp = ((z & 1) << 16) |
184 return temp & 0x1ffff;
188 dis_assemble_17 (as17, x, y, z)
190 unsigned int *x, *y, *z;
193 *z = (as17 & 0x10000) >> 16;
194 *x = (as17 & 0x0f800) >> 11;
195 *y = (((as17 & 0x00400) >> 10) | ((as17 & 0x3ff) << 1)) & 0x7ff;
198 static INLINE unsigned long
204 temp = ((x & 1) << 20) |
206 ((x & 0xc000) >> 7) |
207 ((x & 0x1f0000) >> 14) |
208 ((x & 0x003000) >> 12);
209 return temp & 0x1fffff;
213 dis_assemble_21 (as21, x)
214 unsigned int as21, *x;
219 temp = (as21 & 0x100000) >> 20;
220 temp |= (as21 & 0x0ffe00) >> 8;
221 temp |= (as21 & 0x000180) << 7;
222 temp |= (as21 & 0x00007c) << 14;
223 temp |= (as21 & 0x000003) << 12;
227 static INLINE unsigned long
231 return (x << (32 - len)) >> (32 - len);
234 static INLINE unsigned int
238 unsigned int len_ones;
245 len_ones = (len_ones << 1) | 1;
253 sign_unext (x, len, result)
255 unsigned int *result;
257 unsigned int len_ones;
259 len_ones = ones (len);
261 *result = x & len_ones;
264 static INLINE unsigned long
265 low_sign_ext (x, len)
268 unsigned int temp1, temp2;
269 unsigned int len_ones;
271 len_ones = ones (len);
273 temp1 = (x & 1) << (len - 1);
274 temp2 = ((x & 0xfffffffe) & len_ones) >> 1;
275 return sign_ext ((temp1 | temp2), len);
279 low_sign_unext (x, len, result)
281 unsigned int *result;
286 unsigned int one_bit_at_len;
287 unsigned int len_ones;
289 len_ones = ones (len);
290 one_bit_at_len = 1 << (len - 1);
292 sign_unext (x, len, &temp);
293 sign = temp & one_bit_at_len;
296 rest = temp & (len_ones ^ one_bit_at_len);
299 *result = rest | sign;
302 /* Handle field selectors for PA instructions. */
304 static INLINE unsigned long
305 hppa_field_adjust (value, constant_value, r_field)
307 unsigned long constant_value;
308 unsigned short r_field;
310 value += constant_value;
313 case e_fsel: /* F : no change */
316 case e_lssel: /* LS : if (bit 21) then add 0x800
317 arithmetic shift right 11 bits */
318 if (value & 0x00000400)
320 value = (value & 0xfffff800) >> 11;
323 case e_rssel: /* RS : Sign extend from bit 21 */
324 if (value & 0x00000400)
330 case e_lsel: /* L : Arithmetic shift right 11 bits */
331 value = (value & 0xfffff800) >> 11;
334 case e_rsel: /* R : Set bits 0-20 to zero */
335 value = value & 0x7ff;
338 case e_ldsel: /* LD : Add 0x800, arithmetic shift
341 value = (value & 0xfffff800) >> 11;
344 case e_rdsel: /* RD : Set bits 0-20 to one */
348 case e_lrsel: /* LR : L with "rounded" constant */
349 value = value + ((constant_value + 0x1000) & 0xffffe000);
350 value = (value & 0xfffff800) >> 11;
353 case e_rrsel: /* RR : R with "rounded" constant */
354 value = value + ((constant_value + 0x1000) & 0xffffe000);
355 value = (value & 0x7ff) + constant_value - ((constant_value + 0x1000) & 0xffffe000);
365 /* PA-RISC OPCODES */
366 #define get_opcode(insn) ((insn) & 0xfc000000) >> 26
368 /* FIXME: this list is incomplete. It should also be an enumerated
369 type rather than #defines. */
408 /* Given a machine instruction, return its format.
410 FIXME: opcodes which do not map to a known format
411 should return an error of some sort. */
414 bfd_hppa_insn2fmt (insn)
418 unsigned char op = get_opcode (insn);
469 /* Insert VALUE into INSN using R_FORMAT to determine exactly what
473 hppa_rebuild_insn (abfd, insn, value, r_format)
477 unsigned long r_format;
479 unsigned long const_part;
480 unsigned long rebuilt_part;
488 const_part = insn & 0xffffe002;
489 dis_assemble_12 (value, &w1, &w);
490 rebuilt_part = (w1 << 2) | w;
491 return const_part | rebuilt_part;
498 const_part = insn & 0xffffe002;
499 dis_assemble_12 (value, &w1, &w);
500 rebuilt_part = (w1 << 2) | w;
501 return const_part | rebuilt_part;
505 const_part = insn & 0xffffc000;
506 low_sign_unext (value, 14, &rebuilt_part);
507 return const_part | rebuilt_part;
513 const_part = insn & 0xffe0e002;
514 dis_assemble_17 (value, &w1, &w2, &w);
515 rebuilt_part = (w2 << 2) | (w1 << 16) | w;
516 return const_part | rebuilt_part;
520 const_part = insn & 0xffe00000;
521 dis_assemble_21 (value, &rebuilt_part);
522 return const_part | rebuilt_part;