1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
6 Center for Software Science
7 Department of Computer Science
10 This file is part of BFD, the Binary File Descriptor library.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
33 /* Note there isn't much error handling code in here yet. Unexpected
34 conditions are handled by just calling abort. FIXME damnit! */
36 /* ELF32/HPPA relocation support
38 This file contains ELF32/HPPA relocation support as specified
39 in the Stratus FTX/Golf Object File Format (SED-1762) dated
42 #include "elf32-hppa.h"
43 #include "aout/aout64.h"
44 #include "hppa_stubs.h"
46 /* The basic stub types supported. If/when shared libraries are
47 implemented some form of IMPORT and EXPORT stubs will be needed. */
55 /* This is a list of all the stubs for a particular BFD. */
57 typedef struct elf32_hppa_stub_name_list_struct
59 /* The symbol associated with this stub. */
61 /* Pointer to chain of all stub chains. */
62 struct elf32_hppa_stub_description_struct *stub_desc;
63 /* Pointer to the stub contents (eg instructions). */
65 /* Size of this stub? (in what units? FIXME). */
67 /* Pointer to the next stub entry in the chain. */
68 struct elf32_hppa_stub_name_list_struct *next;
69 } elf32_hppa_stub_name_list;
71 /* This is a linked list in which each entry describes all the
72 linker stubs for a particular bfd. */
74 typedef struct elf32_hppa_stub_description_struct
76 /* The next group of stubs. */
77 struct elf32_hppa_stub_description_struct *next;
78 /* Used to identify this group of stubs as belonging
79 to a particular bfd. */
81 /* FIXME: The stub section for this group of stubs? Is
82 this redundant with stub_listP->sym->section? */
84 /* FIXME: what the hell is this? */
85 unsigned relocs_allocated_cnt;
86 /* The current real size of the stubs (in bytes?). */
88 /* How much space we have allocated for stubs (in bytes?). */
89 unsigned allocated_size;
90 /* Pointer to the first available space for new stubs. */
92 /* Pointer to the beginning of the stubs. FIXME: Why an int *
93 above and a char * here? */
95 /* The list of stubs for this bfd. */
96 elf32_hppa_stub_name_list *stub_listP;
97 /* I guess we just carry this around for fun. */
98 struct bfd_link_info *link_info;
99 } elf32_hppa_stub_description;
103 #define RETURN_VALUE 1
105 /* The various argument relocations that may be performed.
106 Note GRX,GRY really means ARGX,ARGY. */
111 /* Relocate 32 bits from general to FP register. */
113 /* Relocate 64 bits from arg0,arg1 to FParg1. */
115 /* Relocate 64 bits from arg2,arg3 to FParg3. */
117 /* Relocate 32 bits from FP to general register. */
119 /* Relocate 64 bits from FParg1 to arg0,arg1. */
121 /* Relocate 64 bits from FParg3 to arg2,arg3. */
127 /* Where (what register type) is an argument comming from? */
130 /* Not in a register. */
132 /* In a general argument register. */
134 /* In right half of a FP argument register. */
136 /* In upper (left) half of a FP argument register. */
138 /* In general argument register pair 0 (arg0, arg1). */
140 /* In general argument register pair 1 (arg2, arg3). */
144 /* What is being relocated (eg which argument or the return value). */
147 ARG0, ARG1, ARG2, ARG3, RETVAL,
148 } arg_reloc_location;
150 /* Horizontal represents callee's argument location information, vertical
151 represents caller's argument location information. Value at a particular
152 X, Y location represents what (if any) argument relocation needs to
153 be performed to make caller and callee agree. */
154 static CONST arg_reloc_type mismatches[6][6] =
156 {NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC,
157 NO_ARG_RELOC, NO_ARG_RELOC},
158 {NO_ARG_RELOC, NO_ARG_RELOC, R_TO_FR, ARG_RELOC_ERR,
159 R01_TO_FR, ARG_RELOC_ERR},
160 {NO_ARG_RELOC, FR_TO_R, NO_ARG_RELOC, ARG_RELOC_ERR,
161 ARG_RELOC_ERR, ARG_RELOC_ERR},
162 {ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR,
163 ARG_RELOC_ERR, ARG_RELOC_ERR},
164 {NO_ARG_RELOC, FR_TO_R01, NO_ARG_RELOC, ARG_RELOC_ERR,
165 NO_ARG_RELOC, ARG_RELOC_ERR},
166 {NO_ARG_RELOC, FR_TO_R23, NO_ARG_RELOC, ARG_RELOC_ERR,
167 ARG_RELOC_ERR, NO_ARG_RELOC},
170 /* Likewise for the return value. */
171 static CONST arg_reloc_type retval_mismatches[6][6] =
173 {NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC,
174 NO_ARG_RELOC, NO_ARG_RELOC},
175 {NO_ARG_RELOC, NO_ARG_RELOC, FR_TO_R, ARG_RELOC_ERR,
176 FR_TO_R01, ARG_RELOC_ERR},
177 {NO_ARG_RELOC, R_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR,
178 ARG_RELOC_ERR, ARG_RELOC_ERR},
179 {ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR,
180 ARG_RELOC_ERR, ARG_RELOC_ERR},
181 {NO_ARG_RELOC, R01_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR,
182 NO_ARG_RELOC, ARG_RELOC_ERR},
183 {NO_ARG_RELOC, R23_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR,
184 ARG_RELOC_ERR, NO_ARG_RELOC},
187 /* Used for index mapping in symbol-extension sections. */
188 struct elf32_hppa_symextn_map_struct
196 static bfd_reloc_status_type hppa_elf_reloc
197 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
199 static unsigned long hppa_elf_relocate_insn
200 PARAMS ((bfd *, asection *, unsigned long, unsigned long, long,
201 long, unsigned long, unsigned long, unsigned long));
203 static void hppa_elf_relocate_unwind_table
204 PARAMS ((bfd *, PTR, unsigned long, long, long,
205 unsigned long, unsigned long));
207 static long get_symbol_value PARAMS ((asymbol *));
209 static bfd_reloc_status_type hppa_elf_reloc
210 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd*, char **));
212 static CONST reloc_howto_type * elf_hppa_reloc_type_lookup
213 PARAMS ((bfd *, bfd_reloc_code_real_type));
215 static symext_entryS elf32_hppa_get_sym_extn PARAMS ((bfd *, asymbol *, int));
217 static elf32_hppa_stub_description * find_stubs PARAMS ((bfd *, asection *));
219 static elf32_hppa_stub_description * new_stub
220 PARAMS ((bfd *, asection *, struct bfd_link_info *));
222 static arg_reloc_type type_of_mismatch PARAMS ((int, int, int));
224 static elf32_hppa_stub_name_list * find_stub_by_name
225 PARAMS ((bfd *, asection *, char *));
227 static elf32_hppa_stub_name_list * add_stub_by_name
228 PARAMS ((bfd *, asection *, asymbol *, struct bfd_link_info *));
230 static void hppa_elf_stub_finish PARAMS ((bfd *));
232 static void hppa_elf_stub_reloc
233 PARAMS ((elf32_hppa_stub_description *, bfd *, asymbol **, int,
234 elf32_hppa_reloc_type));
236 static int hppa_elf_arg_reloc_needed_p
237 PARAMS ((bfd *, arelent *, arg_reloc_type [5], symext_entryS));
239 static asymbol * hppa_elf_build_linker_stub
240 PARAMS ((bfd *, bfd *, struct bfd_link_info *, arelent *,
241 arg_reloc_type [5], int, unsigned *, hppa_stub_type));
243 static void hppa_elf_create_stub_sec
244 PARAMS ((bfd *, bfd *, asection **, struct bfd_link_info *));
246 static int hppa_elf_long_branch_needed_p
247 PARAMS ((bfd *, asection *, arelent *, asymbol *, unsigned));
249 static boolean hppa_elf_set_section_contents
250 PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
252 static void elf_info_to_howto
253 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
255 static void elf32_hppa_backend_symbol_processing PARAMS ((bfd *, asymbol *));
257 static boolean elf32_hppa_backend_section_processing
258 PARAMS ((bfd *, Elf32_Internal_Shdr *));
260 static boolean elf32_hppa_backend_symbol_table_processing
261 PARAMS ((bfd *, elf_symbol_type *, int));
263 static boolean elf32_hppa_backend_section_from_shdr
264 PARAMS ((bfd *, Elf32_Internal_Shdr *, char *));
266 static boolean elf32_hppa_backend_fake_sections
267 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
269 static boolean elf32_hppa_backend_section_from_bfd_section
270 PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *));
272 static boolean hppa_elf_is_local_label PARAMS ((bfd *, asymbol *));
274 /* ELF/PA relocation howto entries. */
276 static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] =
278 {R_HPPA_NONE, 0, 3, 19, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_NONE"},
279 {R_HPPA_32, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_32"},
280 {R_HPPA_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_11"},
281 {R_HPPA_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_14"},
282 {R_HPPA_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_17"},
283 {R_HPPA_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_L21"},
284 {R_HPPA_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R11"},
285 {R_HPPA_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R14"},
286 {R_HPPA_R17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R17"},
287 {R_HPPA_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LS21"},
288 {R_HPPA_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS11"},
289 {R_HPPA_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS14"},
290 {R_HPPA_RS17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS17"},
291 {R_HPPA_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LD21"},
292 {R_HPPA_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD11"},
293 {R_HPPA_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD14"},
294 {R_HPPA_RD17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD17"},
295 {R_HPPA_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LR21"},
296 {R_HPPA_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RR14"},
297 {R_HPPA_RR17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RR17"},
298 {R_HPPA_GOTOFF_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_11"},
299 {R_HPPA_GOTOFF_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_14"},
300 {R_HPPA_GOTOFF_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_L21"},
301 {R_HPPA_GOTOFF_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_R11"},
302 {R_HPPA_GOTOFF_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_R14"},
303 {R_HPPA_GOTOFF_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LS21"},
304 {R_HPPA_GOTOFF_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RS11"},
305 {R_HPPA_GOTOFF_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RS14"},
306 {R_HPPA_GOTOFF_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LD21"},
307 {R_HPPA_GOTOFF_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RD11"},
308 {R_HPPA_GOTOFF_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RD14"},
309 {R_HPPA_GOTOFF_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LR21"},
310 {R_HPPA_GOTOFF_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RR14"},
311 {R_HPPA_ABS_CALL_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_11"},
312 {R_HPPA_ABS_CALL_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_14"},
313 {R_HPPA_ABS_CALL_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_17"},
314 {R_HPPA_ABS_CALL_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_L21"},
315 {R_HPPA_ABS_CALL_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R11"},
316 {R_HPPA_ABS_CALL_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R14"},
317 {R_HPPA_ABS_CALL_R17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R17"},
318 {R_HPPA_ABS_CALL_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LS21"},
319 {R_HPPA_ABS_CALL_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS11"},
320 {R_HPPA_ABS_CALL_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS14"},
321 {R_HPPA_ABS_CALL_RS17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS17"},
322 {R_HPPA_ABS_CALL_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LD21"},
323 {R_HPPA_ABS_CALL_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD11"},
324 {R_HPPA_ABS_CALL_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD14"},
325 {R_HPPA_ABS_CALL_RD17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD17"},
326 {R_HPPA_ABS_CALL_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LR21"},
327 {R_HPPA_ABS_CALL_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RR14"},
328 {R_HPPA_ABS_CALL_RR17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RR17"},
329 {R_HPPA_PCREL_CALL_11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_11"},
330 {R_HPPA_PCREL_CALL_14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_14"},
331 {R_HPPA_PCREL_CALL_17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_17"},
332 {R_HPPA_PCREL_CALL_12, 0, 3, 12, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_12"},
333 {R_HPPA_PCREL_CALL_L21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_L21"},
334 {R_HPPA_PCREL_CALL_R11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R11"},
335 {R_HPPA_PCREL_CALL_R14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R14"},
336 {R_HPPA_PCREL_CALL_R17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R17"},
337 {R_HPPA_PCREL_CALL_LS21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LS21"},
338 {R_HPPA_PCREL_CALL_RS11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS11"},
339 {R_HPPA_PCREL_CALL_RS14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS14"},
340 {R_HPPA_PCREL_CALL_RS17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS17"},
341 {R_HPPA_PCREL_CALL_LD21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LD21"},
342 {R_HPPA_PCREL_CALL_RD11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD11"},
343 {R_HPPA_PCREL_CALL_RD14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD14"},
344 {R_HPPA_PCREL_CALL_RD17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD17"},
345 {R_HPPA_PCREL_CALL_LR21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LR21"},
346 {R_HPPA_PCREL_CALL_RR14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RR14"},
347 {R_HPPA_PCREL_CALL_RR17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RR17"},
348 {R_HPPA_PLABEL_32, 0, 3, 32, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_32"},
349 {R_HPPA_PLABEL_11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_11"},
350 {R_HPPA_PLABEL_14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_14"},
351 {R_HPPA_PLABEL_L21, 0, 3, 21, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_L21"},
352 {R_HPPA_PLABEL_R11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_R11"},
353 {R_HPPA_PLABEL_R14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_R14"},
354 {R_HPPA_DLT_32, 0, 3, 32, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_32"},
355 {R_HPPA_DLT_11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_11"},
356 {R_HPPA_DLT_14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_14"},
357 {R_HPPA_DLT_L21, 0, 3, 21, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_L21"},
358 {R_HPPA_DLT_R11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_R11"},
359 {R_HPPA_DLT_R14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_R14"},
360 {R_HPPA_UNWIND_ENTRY, 0, 3, 32, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_UNWIND_ENTRY"},
361 {R_HPPA_UNWIND_ENTRIES, 0, 3, 32, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_UNWIND_ENTRIES"},
362 {R_HPPA_PUSH_CONST, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_CONST"},
363 {R_HPPA_PUSH_PC, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PC"},
364 {R_HPPA_PUSH_SYM, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_SYM"},
365 {R_HPPA_PUSH_GOTOFF, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_GOTOFF"},
366 {R_HPPA_PUSH_ABS_CALL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_ABS_CALL"},
367 {R_HPPA_PUSH_PCREL_CALL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PCREL_CALL"},
368 {R_HPPA_PUSH_PLABEL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PLABEL"},
369 {R_HPPA_MAX, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MAX"},
370 {R_HPPA_MIN, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MIN"},
371 {R_HPPA_ADD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ADD"},
372 {R_HPPA_SUB, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_SUB"},
373 {R_HPPA_MULT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MULT"},
374 {R_HPPA_DIV, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_DIV"},
375 {R_HPPA_MOD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MOD"},
376 {R_HPPA_AND, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_AND"},
377 {R_HPPA_OR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_OR"},
378 {R_HPPA_XOR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_XOR"},
379 {R_HPPA_NOT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_NOT"},
380 {R_HPPA_LSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LSHIFT"},
381 {R_HPPA_ARITH_RSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ARITH_RSHIFT"},
382 {R_HPPA_LOGIC_RSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LOGIC_RSHIFT"},
383 {R_HPPA_EXPR_F, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_L"},
384 {R_HPPA_EXPR_L, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_L"},
385 {R_HPPA_EXPR_R, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_R"},
386 {R_HPPA_EXPR_LS, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LS"},
387 {R_HPPA_EXPR_RS, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RS"},
388 {R_HPPA_EXPR_LD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LD"},
389 {R_HPPA_EXPR_RD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RD"},
390 {R_HPPA_EXPR_LR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LR"},
391 {R_HPPA_EXPR_RR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RR"},
392 {R_HPPA_EXPR_32, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_32"},
393 {R_HPPA_EXPR_21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_21"},
394 {R_HPPA_EXPR_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_11"},
395 {R_HPPA_EXPR_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_14"},
396 {R_HPPA_EXPR_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_17"},
397 {R_HPPA_EXPR_12, 0, 3, 12, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_12"},
398 {R_HPPA_STUB_CALL_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_STUB_CALL_17"},
399 {R_HPPA_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_dont, NULL, "R_HPPA_UNIMPLEMENTED"},
402 static symext_chainS *symext_rootP;
403 static symext_chainS *symext_lastP;
404 static boolean symext_chain_built;
405 static long global_value;
406 static long GOT_value;
407 static asymbol *global_symbol;
408 static int global_sym_defined;
409 static symext_entryS *symextn_contents;
410 static unsigned int symextn_contents_real_size;
411 static elf32_hppa_stub_description *elf_hppa_stub_rootP;
412 static boolean stubs_finished = false;
413 static struct elf32_hppa_symextn_map_struct *elf32_hppa_symextn_map;
414 static int elf32_hppa_symextn_map_size;
416 static char *linker_stubs = NULL;
417 static int linker_stubs_size = 0;
418 static int linker_stubs_max_size = 0;
419 #define STUB_ALLOC_INCR 100
420 #define STUB_SYM_BUFFER_INC 5
422 /* Relocate the given INSN given the various input parameters.
424 FIXME: endianness and sizeof (long) issues abound here. */
427 hppa_elf_relocate_insn (abfd, input_sect, insn, address, sym_value,
428 r_addend, r_format, r_field, pcrel)
430 asection *input_sect;
432 unsigned long address;
435 unsigned long r_format;
436 unsigned long r_field;
439 unsigned char opcode = get_opcode (insn);
460 constant_value = HPPA_R_CONSTANT (r_addend);
463 sym_value -= address;
465 sym_value = hppa_field_adjust (sym_value, constant_value, r_field);
466 return hppa_rebuild_insn (abfd, insn, sym_value, r_format);
471 arg_reloc = HPPA_R_ARG_RELOC (r_addend);
473 /* XXX computing constant_value is not needed??? */
474 constant_value = assemble_17 ((insn & 0x001f0000) >> 16,
475 (insn & 0x00001ffc) >> 2,
478 constant_value = (constant_value << 15) >> 15;
482 address + input_sect->output_offset
483 + input_sect->output_section->vma;
484 sym_value = hppa_field_adjust (sym_value, -8, r_field);
487 sym_value = hppa_field_adjust (sym_value, constant_value, r_field);
489 return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format);
494 constant_value = HPPA_R_CONSTANT (r_addend);
497 sym_value -= address;
499 return hppa_field_adjust (sym_value, constant_value, r_field);
506 /* Relocate a single unwind entry, or an entire table of them. */
509 hppa_elf_relocate_unwind_table (abfd, data, address, sym_value,
510 r_addend, r_type, r_field)
513 unsigned long address;
516 unsigned long r_type;
517 unsigned long r_field;
519 bfd_byte *hit_data = address + (bfd_byte *) data;
522 long relocated_value;
527 case R_HPPA_UNWIND_ENTRY:
528 /* Need to relocate the first two 32bit fields in the unwind. They
529 correspond to a function's start and end address. */
530 start_offset = bfd_get_32 (abfd, hit_data);
531 relocated_value = hppa_field_adjust (sym_value, start_offset, r_field);
532 bfd_put_32 (abfd, relocated_value, hit_data);
534 hit_data += sizeof (unsigned long);
535 end_offset = bfd_get_32 (abfd, hit_data);
536 relocated_value = hppa_field_adjust (sym_value, end_offset, r_field);
537 bfd_put_32 (abfd, relocated_value, hit_data);
540 case R_HPPA_UNWIND_ENTRIES:
541 /* Relocate a mass of unwind entires. The count is passed in r_addend
542 (who's braindamaged idea was this anyway? */
543 for (i = 0; i < r_addend; i++, hit_data += 3 * sizeof (unsigned long))
545 unsigned int adjustment;
546 /* Adjust the first 32bit field in the unwind entry. It's
547 the starting offset of a function. */
548 start_offset = bfd_get_32 (abfd, hit_data);
549 bfd_put_32 (abfd, sym_value, hit_data);
550 adjustment = sym_value - start_offset;
552 /* Now adjust the second 32bit field, it's the ending offset
554 hit_data += sizeof (unsigned long);
555 end_offset = adjustment + bfd_get_32 (abfd, hit_data);
556 bfd_put_32 (abfd, end_offset, hit_data);
558 /* Prepare for the next iteration. */
559 start_offset = bfd_get_32 (abfd,
560 hit_data + 3 * sizeof (unsigned long));
561 sym_value = start_offset + adjustment;
570 /* Return the relocated value of the given symbol. */
573 get_symbol_value (symbol)
577 || symbol->section == &bfd_com_section)
580 return symbol->value + symbol->section->output_section->vma
581 + symbol->section->output_offset;
584 /* Return one (or more) BFD relocations which implement the base
585 relocation with modifications based on format and field. */
587 elf32_hppa_reloc_type **
588 hppa_elf_gen_reloc_type (abfd, base_type, format, field)
590 elf32_hppa_reloc_type base_type;
594 elf32_hppa_reloc_type *finaltype;
595 elf32_hppa_reloc_type **final_types;
597 /* Allocate slots for the BFD relocation. */
598 final_types = (elf32_hppa_reloc_type **)
599 bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type *) * 2);
600 BFD_ASSERT (final_types != 0); /* FIXME */
602 /* Allocate space for the relocation itself. */
603 finaltype = (elf32_hppa_reloc_type *)
604 bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type));
605 BFD_ASSERT (finaltype != 0); /* FIXME */
607 /* Some reasonable defaults. */
608 final_types[0] = finaltype;
609 final_types[1] = NULL;
611 #define final_type finaltype[0]
613 final_type = base_type;
615 /* Just a tangle of nested switch statements to deal with the braindamage
616 that a different field selector means a completely different relocation
627 final_type = R_HPPA_11;
630 final_type = R_HPPA_R11;
633 final_type = R_HPPA_RS11;
636 final_type = R_HPPA_RD11;
639 final_type = R_HPPA_PLABEL_11;
642 final_type = R_HPPA_PLABEL_R11;
645 final_type = R_HPPA_DLT_11;
648 final_type = R_HPPA_DLT_R11;
660 final_type = R_HPPA_R14;
663 final_type = R_HPPA_RS14;
666 final_type = R_HPPA_RD14;
669 final_type = R_HPPA_RR14;
672 final_type = R_HPPA_PLABEL_14;
675 final_type = R_HPPA_PLABEL_R14;
678 final_type = R_HPPA_DLT_14;
681 final_type = R_HPPA_DLT_R14;
693 final_type = R_HPPA_17;
696 final_type = R_HPPA_R17;
699 final_type = R_HPPA_RS17;
702 final_type = R_HPPA_RD17;
705 final_type = R_HPPA_RR17;
717 final_type = R_HPPA_L21;
720 final_type = R_HPPA_LS21;
723 final_type = R_HPPA_LD21;
726 final_type = R_HPPA_LR21;
729 final_type = R_HPPA_PLABEL_L21;
732 final_type = R_HPPA_PLABEL_L21;
744 final_type = R_HPPA_32;
747 final_type = R_HPPA_PLABEL_32;
750 final_type = R_HPPA_DLT_32;
772 final_type = R_HPPA_GOTOFF_R11;
775 final_type = R_HPPA_GOTOFF_RS11;
778 final_type = R_HPPA_GOTOFF_RD11;
781 final_type = R_HPPA_GOTOFF_11;
793 final_type = R_HPPA_GOTOFF_R14;
796 final_type = R_HPPA_GOTOFF_RS14;
799 final_type = R_HPPA_GOTOFF_RD14;
802 final_type = R_HPPA_GOTOFF_RR14;
805 final_type = R_HPPA_GOTOFF_14;
817 final_type = R_HPPA_GOTOFF_L21;
820 final_type = R_HPPA_GOTOFF_LS21;
823 final_type = R_HPPA_GOTOFF_LD21;
826 final_type = R_HPPA_GOTOFF_LR21;
841 case R_HPPA_PCREL_CALL:
848 final_type = R_HPPA_PCREL_CALL_R11;
851 final_type = R_HPPA_PCREL_CALL_RS11;
854 final_type = R_HPPA_PCREL_CALL_RD11;
857 final_type = R_HPPA_PCREL_CALL_11;
869 final_type = R_HPPA_PCREL_CALL_R14;
872 final_type = R_HPPA_PCREL_CALL_RS14;
875 final_type = R_HPPA_PCREL_CALL_RD14;
878 final_type = R_HPPA_PCREL_CALL_RR14;
881 final_type = R_HPPA_PCREL_CALL_14;
893 final_type = R_HPPA_PCREL_CALL_R17;
896 final_type = R_HPPA_PCREL_CALL_RS17;
899 final_type = R_HPPA_PCREL_CALL_RD17;
902 final_type = R_HPPA_PCREL_CALL_RR17;
905 final_type = R_HPPA_PCREL_CALL_17;
917 final_type = R_HPPA_PCREL_CALL_L21;
920 final_type = R_HPPA_PCREL_CALL_LS21;
923 final_type = R_HPPA_PCREL_CALL_LD21;
926 final_type = R_HPPA_PCREL_CALL_LR21;
948 final_type = R_HPPA_PLABEL_11;
951 final_type = R_HPPA_PLABEL_R11;
963 final_type = R_HPPA_PLABEL_14;
966 final_type = R_HPPA_PLABEL_R14;
978 final_type = R_HPPA_PLABEL_L21;
990 final_type = R_HPPA_PLABEL_32;
1004 case R_HPPA_ABS_CALL:
1011 final_type = R_HPPA_ABS_CALL_R11;
1014 final_type = R_HPPA_ABS_CALL_RS11;
1017 final_type = R_HPPA_ABS_CALL_RD11;
1020 final_type = R_HPPA_ABS_CALL_11;
1032 final_type = R_HPPA_ABS_CALL_R14;
1035 final_type = R_HPPA_ABS_CALL_RS14;
1038 final_type = R_HPPA_ABS_CALL_RD14;
1041 final_type = R_HPPA_ABS_CALL_RR14;
1044 final_type = R_HPPA_ABS_CALL_14;
1056 final_type = R_HPPA_ABS_CALL_R17;
1059 final_type = R_HPPA_ABS_CALL_RS17;
1062 final_type = R_HPPA_ABS_CALL_RD17;
1065 final_type = R_HPPA_ABS_CALL_RR17;
1068 final_type = R_HPPA_ABS_CALL_17;
1080 final_type = R_HPPA_ABS_CALL_L21;
1083 final_type = R_HPPA_ABS_CALL_LS21;
1086 final_type = R_HPPA_ABS_CALL_LD21;
1089 final_type = R_HPPA_ABS_CALL_LR21;
1105 final_type = R_HPPA_UNWIND_ENTRY;
1109 case R_HPPA_COMPLEX:
1110 case R_HPPA_COMPLEX_PCREL_CALL:
1111 case R_HPPA_COMPLEX_ABS_CALL:
1112 /* The code originally here was horribly broken, and apparently
1113 never used. Zap it. When we need complex relocations rewrite
1119 final_type = base_type;
1129 /* Actually perform a relocation. */
1131 static bfd_reloc_status_type
1132 hppa_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
1135 arelent *reloc_entry;
1138 asection *input_section;
1140 char **error_message;
1144 unsigned long addr = reloc_entry->address;
1145 bfd_byte *hit_data = addr + (bfd_byte *) data;
1146 unsigned long r_type = reloc_entry->howto->type;
1147 unsigned long r_field = e_fsel;
1148 boolean r_pcrel = reloc_entry->howto->pc_relative;
1149 unsigned r_format = reloc_entry->howto->bitsize;
1150 long r_addend = reloc_entry->addend;
1152 /* If only performing a partial link, get out early. */
1155 reloc_entry->address += input_section->output_offset;
1156 return bfd_reloc_ok;
1159 /* If performing final link and the symbol we're relocating against
1160 is undefined, then return an error. */
1161 if (symbol_in && symbol_in->section == &bfd_und_section)
1162 return bfd_reloc_undefined;
1164 /* Get the final relocated value. */
1165 sym_value = get_symbol_value (symbol_in);
1167 /* Compute the value of $global$.
1168 FIXME: None of this should be necessary. $global$ is just a
1169 marker and shouldn't really figure into these computations.
1171 Once that's fixed we'll need to teach this backend to change
1172 DP-relative relocations involving symbols in the text section
1173 to be simple absolute relocations. */
1174 if (!global_sym_defined)
1178 global_value = (global_symbol->value
1179 + global_symbol->section->output_section->vma
1180 + global_symbol->section->output_offset);
1181 GOT_value = global_value;
1182 global_sym_defined++;
1186 /* Get the instruction word. */
1187 insn = bfd_get_32 (abfd, hit_data);
1189 /* Relocate the value based on one of the basic relocation types
1191 basic_type_1: relocation is relative to $global$
1192 basic_type_2: relocation is relative to the current GOT
1193 basic_type_3: relocation is an absolute call
1194 basic_type_4: relocation is an PC-relative call
1195 basic_type_5: relocation is plabel reference
1196 basic_type_6: relocation is an unwind table relocation
1197 extended_type: unimplemented */
1204 /* Handle all the basic type 1 relocations. */
1210 goto do_basic_type_1;
1213 goto do_basic_type_1;
1218 goto do_basic_type_1;
1221 goto do_basic_type_1;
1226 goto do_basic_type_1;
1229 goto do_basic_type_1;
1234 goto do_basic_type_1;
1237 goto do_basic_type_1;
1243 insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
1244 sym_value, r_addend, r_format,
1248 /* Handle all the basic type 2 relocations. */
1249 case R_HPPA_GOTOFF_11:
1250 case R_HPPA_GOTOFF_14:
1252 goto do_basic_type_2;
1253 case R_HPPA_GOTOFF_L21:
1255 goto do_basic_type_2;
1256 case R_HPPA_GOTOFF_R11:
1257 case R_HPPA_GOTOFF_R14:
1259 goto do_basic_type_2;
1260 case R_HPPA_GOTOFF_LS21:
1262 goto do_basic_type_2;
1263 case R_HPPA_GOTOFF_RS11:
1264 case R_HPPA_GOTOFF_RS14:
1266 goto do_basic_type_2;
1267 case R_HPPA_GOTOFF_LD21:
1269 goto do_basic_type_2;
1270 case R_HPPA_GOTOFF_RD11:
1271 case R_HPPA_GOTOFF_RD14:
1273 goto do_basic_type_2;
1274 case R_HPPA_GOTOFF_LR21:
1276 goto do_basic_type_2;
1277 case R_HPPA_GOTOFF_RR14:
1281 sym_value -= GOT_value;
1282 insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
1283 sym_value, r_addend, r_format,
1287 /* Handle all the basic type 3 relocations. */
1288 case R_HPPA_ABS_CALL_11:
1289 case R_HPPA_ABS_CALL_14:
1290 case R_HPPA_ABS_CALL_17:
1292 goto do_basic_type_3;
1293 case R_HPPA_ABS_CALL_L21:
1295 goto do_basic_type_3;
1296 case R_HPPA_ABS_CALL_R11:
1297 case R_HPPA_ABS_CALL_R14:
1298 case R_HPPA_ABS_CALL_R17:
1300 goto do_basic_type_3;
1301 case R_HPPA_ABS_CALL_LS21:
1303 goto do_basic_type_3;
1304 case R_HPPA_ABS_CALL_RS11:
1305 case R_HPPA_ABS_CALL_RS14:
1306 case R_HPPA_ABS_CALL_RS17:
1308 goto do_basic_type_3;
1309 case R_HPPA_ABS_CALL_LD21:
1311 goto do_basic_type_3;
1312 case R_HPPA_ABS_CALL_RD11:
1313 case R_HPPA_ABS_CALL_RD14:
1314 case R_HPPA_ABS_CALL_RD17:
1316 goto do_basic_type_3;
1317 case R_HPPA_ABS_CALL_LR21:
1319 goto do_basic_type_3;
1320 case R_HPPA_ABS_CALL_RR14:
1321 case R_HPPA_ABS_CALL_RR17:
1325 insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
1326 sym_value, r_addend, r_format,
1330 /* Handle all the basic type 4 relocations. */
1331 case R_HPPA_PCREL_CALL_11:
1332 case R_HPPA_PCREL_CALL_14:
1333 case R_HPPA_PCREL_CALL_17:
1335 goto do_basic_type_4;
1336 case R_HPPA_PCREL_CALL_L21:
1338 goto do_basic_type_4;
1339 case R_HPPA_PCREL_CALL_R11:
1340 case R_HPPA_PCREL_CALL_R14:
1341 case R_HPPA_PCREL_CALL_R17:
1343 goto do_basic_type_4;
1344 case R_HPPA_PCREL_CALL_LS21:
1346 goto do_basic_type_4;
1347 case R_HPPA_PCREL_CALL_RS11:
1348 case R_HPPA_PCREL_CALL_RS14:
1349 case R_HPPA_PCREL_CALL_RS17:
1351 goto do_basic_type_4;
1352 case R_HPPA_PCREL_CALL_LD21:
1354 goto do_basic_type_4;
1355 case R_HPPA_PCREL_CALL_RD11:
1356 case R_HPPA_PCREL_CALL_RD14:
1357 case R_HPPA_PCREL_CALL_RD17:
1359 goto do_basic_type_4;
1360 case R_HPPA_PCREL_CALL_LR21:
1362 goto do_basic_type_4;
1363 case R_HPPA_PCREL_CALL_RR14:
1364 case R_HPPA_PCREL_CALL_RR17:
1368 insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
1369 sym_value, r_addend, r_format,
1373 /* Handle all the basic type 5 relocations. */
1374 case R_HPPA_PLABEL_32:
1375 case R_HPPA_PLABEL_11:
1376 case R_HPPA_PLABEL_14:
1378 goto do_basic_type_5;
1379 case R_HPPA_PLABEL_L21:
1381 goto do_basic_type_5;
1382 case R_HPPA_PLABEL_R11:
1383 case R_HPPA_PLABEL_R14:
1386 insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
1387 sym_value, r_addend, r_format,
1391 /* Handle all basic type 6 relocations. */
1392 case R_HPPA_UNWIND_ENTRY:
1393 case R_HPPA_UNWIND_ENTRIES:
1394 hppa_elf_relocate_unwind_table (abfd, data, addr,
1395 sym_value, r_addend,
1397 return bfd_reloc_ok;
1399 /* This is a linker internal relocation. */
1400 case R_HPPA_STUB_CALL_17:
1401 /* This relocation is for a branch to a long branch stub.
1402 Change instruction to a BLE,N. It may also be necessary
1403 to interchange the branch and its delay slot.
1404 The original instruction stream is
1406 bl <foo>,r ; call foo using register r as
1407 ; the return pointer
1408 XXX ; delay slot instruction
1410 The new instruction stream will be:
1412 XXX ; delay slot instruction
1413 ble <foo_stub> ; call the long call stub for foo
1414 ; using r31 as the return pointer
1416 This braindamage is necessary because the compiler may put
1417 an instruction which uses %r31 in the delay slot of the original
1418 call. By changing the call instruction from a "bl" to a "ble"
1419 %r31 gets clobbered before the delay slot executes. This
1420 also means the stub has to play funny games to make sure
1421 we return to the instruction just after the BLE rather than
1422 two instructions after the BLE.
1424 We do not interchange the branch and delay slot if the delay
1425 slot was already nullified, or if the instruction in the delay
1426 slot modifies the return pointer to avoid an unconditional
1427 jump after the call returns (GCC optimization).
1429 None of this horseshit would be necessary if we put the
1430 stubs between functions and just redirected the "bl" to
1431 the stub. Live and learn. */
1433 /* Is this instruction nullified? (does this ever happen?) */
1436 insn = BLE_N_XXX_0_0;
1437 bfd_put_32 (abfd, insn, hit_data);
1438 r_type = R_HPPA_ABS_CALL_17;
1440 insn = hppa_elf_relocate_insn (abfd, input_section, insn,
1441 addr, sym_value, r_addend,
1442 r_format, r_field, r_pcrel);
1446 /* So much for the trivial case... */
1447 unsigned long old_delay_slot_insn = bfd_get_32 (abfd, hit_data + 4);
1448 unsigned rtn_reg = (insn & 0x03e00000) >> 21;
1450 if (get_opcode (old_delay_slot_insn) == LDO)
1452 unsigned ldo_src_reg = (old_delay_slot_insn & 0x03e00000) >> 21;
1453 unsigned ldo_target_reg = (old_delay_slot_insn & 0x001f0000) >> 16;
1455 /* If the target of the LDO is the same as the return
1456 register then there is no reordering. We can leave the
1457 instuction as a non-nullified BLE in this case.
1459 FIXME: This test looks wrong. If we had a ble using
1460 ldo_target_reg as the *source* we'd fuck this up. */
1461 if (ldo_target_reg == rtn_reg)
1463 unsigned long new_delay_slot_insn = old_delay_slot_insn;
1465 BFD_ASSERT (ldo_src_reg == ldo_target_reg);
1466 new_delay_slot_insn &= 0xfc00ffff;
1467 new_delay_slot_insn |= ((31 << 21) | (31 << 16));
1468 bfd_put_32 (abfd, new_delay_slot_insn, hit_data + 4);
1470 r_type = R_HPPA_ABS_CALL_17;
1472 insn = hppa_elf_relocate_insn (abfd, input_section, insn,
1473 addr, sym_value, r_addend,
1474 r_format, r_field, r_pcrel);
1475 bfd_put_32 (abfd, insn, hit_data);
1476 return bfd_reloc_ok;
1478 else if (rtn_reg == 31)
1480 /* The return register is r31, so this is a millicode
1481 call. Do not perform any instruction reordering. */
1483 r_type = R_HPPA_ABS_CALL_17;
1485 insn = hppa_elf_relocate_insn (abfd, input_section, insn,
1489 bfd_put_32 (abfd, insn, hit_data);
1490 return bfd_reloc_ok;
1494 /* Check to see if the delay slot instruction has a
1495 relocation. If so, we need to change the address
1496 field of it because the instruction it relocates
1497 is going to be moved. Oh what a mess. */
1498 arelent * next_reloc_entry = reloc_entry+1;
1500 if (next_reloc_entry->address == reloc_entry->address + 4)
1501 next_reloc_entry->address -= 4;
1503 insn = old_delay_slot_insn;
1504 bfd_put_32 (abfd, insn, hit_data);
1505 insn = BLE_N_XXX_0_0;
1506 bfd_put_32 (abfd, insn, hit_data + 4);
1507 r_type = R_HPPA_ABS_CALL_17;
1509 insn = hppa_elf_relocate_insn (abfd, input_section, insn,
1511 sym_value, r_addend,
1512 r_format, r_field, r_pcrel);
1513 bfd_put_32 (abfd, insn, hit_data + 4);
1514 return bfd_reloc_ok;
1517 /* Same comments as above regarding incorrect test. */
1518 else if (rtn_reg == 31)
1520 /* The return register is r31, so this is a millicode call.
1521 Perform no instruction reordering in this case. */
1523 r_type = R_HPPA_ABS_CALL_17;
1525 insn = hppa_elf_relocate_insn (abfd, input_section, insn,
1529 bfd_put_32 (abfd, insn, hit_data);
1530 return bfd_reloc_ok;
1534 /* Check to see if the delay slot instruction has a
1535 relocation. If so, we need to change its address
1536 field because the instruction it relocates is going
1538 arelent * next_reloc_entry = reloc_entry+1;
1540 if (next_reloc_entry->address == reloc_entry->address + 4)
1541 next_reloc_entry->address -= 4;
1543 insn = old_delay_slot_insn;
1544 bfd_put_32 (abfd, insn, hit_data);
1545 insn = BLE_N_XXX_0_0;
1546 bfd_put_32 (abfd, insn, hit_data + 4);
1547 r_type = R_HPPA_ABS_CALL_17;
1549 insn = hppa_elf_relocate_insn (abfd, input_section, insn,
1550 addr + 4, sym_value,
1553 bfd_put_32 (abfd, insn, hit_data + 4);
1554 return bfd_reloc_ok;
1559 /* Something we don't know how to handle. */
1561 *error_message = (char *) "Unrecognized reloc";
1562 return bfd_reloc_notsupported;
1565 /* Update the instruction word. */
1566 bfd_put_32 (abfd, insn, hit_data);
1567 return (bfd_reloc_ok);
1570 /* Return the address of the howto table entry to perform the CODE
1571 relocation for an ARCH machine. */
1573 static CONST reloc_howto_type *
1574 elf_hppa_reloc_type_lookup (abfd, code)
1576 bfd_reloc_code_real_type code;
1578 if ((int) code < (int) R_HPPA_UNIMPLEMENTED)
1580 BFD_ASSERT ((int) elf_hppa_howto_table[(int) code].type == (int) code);
1581 return &elf_hppa_howto_table[(int) code];
1586 /* Return true if SYM represents a local label symbol. */
1589 hppa_elf_is_local_label (abfd, sym)
1593 return (sym->name[0] == 'L' && sym->name[1] == '$');
1596 /* Update the symbol extention chain to include the symbol pointed to
1597 by SYMBOLP if SYMBOLP is a function symbol. Used internally and by GAS. */
1600 elf_hppa_tc_symbol (abfd, symbolP, sym_idx, symext_root, symext_last)
1602 elf_symbol_type *symbolP;
1604 symext_chainS **symext_root;
1605 symext_chainS **symext_last;
1607 symext_chainS *symextP;
1608 unsigned int arg_reloc;
1610 /* Only functions can have argument relocations. */
1611 if (!(symbolP->symbol.flags & BSF_FUNCTION))
1614 arg_reloc = symbolP->tc_data.hppa_arg_reloc;
1616 /* If there are no argument relocation bits, then no relocation is
1617 necessary. Do not add this to the symextn section. */
1621 /* Allocate memory and initialize this entry. */
1622 symextP = (symext_chainS *) bfd_alloc (abfd, sizeof (symext_chainS) * 2);
1625 bfd_set_error (bfd_error_no_memory);
1626 abort(); /* FIXME */
1629 symextP[0].entry = ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX, sym_idx);
1630 symextP[0].next = &symextP[1];
1632 symextP[1].entry = ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC, arg_reloc);
1633 symextP[1].next = NULL;
1635 /* Now update the chain itself so it can be walked later to build
1636 the symbol extension section. */
1637 if (*symext_root == NULL)
1639 *symext_root = &symextP[0];
1640 *symext_last = &symextP[1];
1644 (*symext_last)->next = &symextP[0];
1645 *symext_last = &symextP[1];
1649 /* Build the symbol extension section. Used internally and by GAS. */
1652 elf_hppa_tc_make_sections (abfd, symext_root)
1654 symext_chainS *symext_root;
1656 symext_chainS *symextP;
1658 asection *symextn_sec;
1660 /* FIXME: Huh? I don't see what this is supposed to do for us. */
1661 hppa_elf_stub_finish (abfd);
1663 /* If there are no entries in the symbol extension chain, then
1664 there is no symbol extension section. */
1665 if (symext_root == NULL)
1668 /* Count the number of entries on the chain. */
1669 for (n = 0, symextP = symext_root; symextP; symextP = symextP->next, ++n)
1672 /* Create the symbol extension section and set some appropriate
1674 size = sizeof (symext_entryS) * n;
1675 symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME);
1676 if (symextn_sec == (asection *) 0)
1678 symextn_sec = bfd_make_section (abfd, SYMEXTN_SECTION_NAME);
1679 bfd_set_section_flags (abfd,
1681 SEC_LOAD | SEC_HAS_CONTENTS | SEC_DATA);
1682 symextn_sec->output_section = symextn_sec;
1683 symextn_sec->output_offset = 0;
1684 bfd_set_section_alignment (abfd, symextn_sec, 2);
1686 bfd_set_section_size (abfd, symextn_sec, symextn_contents_real_size);
1687 symextn_contents_real_size = size;
1689 /* Grab some memory for the contents of the symbol extension section
1691 symextn_contents = (symext_entryS *) bfd_alloc (abfd, size);
1692 if (!symextn_contents)
1694 bfd_set_error (bfd_error_no_memory);
1695 abort(); /* FIXME */
1698 /* Fill in the contents of the symbol extension section. */
1699 for (i = 0, symextP = symext_root; symextP; symextP = symextP->next, ++i)
1700 symextn_contents[i] = symextP->entry;
1705 /* Return the symbol extension record of type TYPE for the symbol SYM. */
1707 static symext_entryS
1708 elf32_hppa_get_sym_extn (abfd, sym, type)
1715 case HPPA_SXT_SYMNDX:
1717 return (symext_entryS) 0;
1718 case HPPA_SXT_ARG_RELOC:
1720 elf_symbol_type *esymP = (elf_symbol_type *) sym;
1722 return (symext_entryS) esymP->tc_data.hppa_arg_reloc;
1724 /* This should never happen. */
1730 /* Search the chain of stub descriptions and locate the stub
1731 description for this the given section within the given bfd.
1733 FIXME: I see yet another wonderful linear linked list search
1734 here. This is probably bad. */
1736 static elf32_hppa_stub_description *
1737 find_stubs (abfd, stub_sec)
1741 elf32_hppa_stub_description *stubP;
1743 for (stubP = elf_hppa_stub_rootP; stubP; stubP = stubP->next)
1745 /* Is this the right one? */
1746 if (stubP->this_bfd == abfd && stubP->stub_sec == stub_sec)
1752 static elf32_hppa_stub_description *
1753 new_stub (abfd, stub_sec, link_info)
1756 struct bfd_link_info *link_info;
1758 elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec);
1760 /* If we found a list for this bfd, then use it. */
1764 /* Nope, allocate and initialize a new entry in the stub list chain. */
1765 stub = (elf32_hppa_stub_description *)
1766 bfd_zalloc (abfd, sizeof (elf32_hppa_stub_description));
1769 stub->this_bfd = abfd;
1770 stub->stub_sec = stub_sec;
1771 stub->real_size = 0;
1772 stub->allocated_size = 0;
1773 stub->stub_contents = NULL;
1774 stub->stub_secp = NULL;
1775 stub->link_info = link_info;
1777 stub->next = elf_hppa_stub_rootP;
1778 elf_hppa_stub_rootP = stub;
1782 bfd_set_error (bfd_error_no_memory);
1783 abort(); /* FIXME */
1789 /* Try and locate a stub with the name NAME within the stubs
1790 associated with ABFD. More linked list searches. */
1792 static elf32_hppa_stub_name_list *
1793 find_stub_by_name (abfd, stub_sec, name)
1798 /* Find the stubs associated with this bfd. */
1799 elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec);
1801 /* If found, then we have to walk down them looking for a match. */
1804 elf32_hppa_stub_name_list *name_listP;
1806 for (name_listP = stub->stub_listP;
1808 name_listP = name_listP->next)
1810 if (!strcmp (name_listP->sym->name, name))
1819 /* Add a new stub (SYM) to the list of stubs associated with the given BFD. */
1820 static elf32_hppa_stub_name_list *
1821 add_stub_by_name(abfd, stub_sec, sym, link_info)
1825 struct bfd_link_info *link_info;
1827 elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec);
1828 elf32_hppa_stub_name_list *stub_entry;
1830 /* If no stubs are associated with this bfd, then we have to make
1831 a chain-of-stubs associated with this bfd. */
1833 stub = new_stub (abfd, stub_sec, link_info);
1837 /* Allocate and initialize an entry in the stub chain. */
1838 stub_entry = (elf32_hppa_stub_name_list *)
1839 bfd_zalloc (abfd, sizeof (elf32_hppa_stub_name_list));
1843 stub_entry->size = 0;
1844 stub_entry->sym = sym;
1845 stub_entry->stub_desc = stub;
1846 /* First byte of this stub is the pointer to
1847 the next available location in the stub buffer. */
1848 stub_entry->stub_secp = stub->stub_secp;
1849 /* Add it to the chain. */
1850 if (stub->stub_listP)
1851 stub_entry->next = stub->stub_listP;
1853 stub_entry->next = NULL;
1854 stub->stub_listP = stub_entry;
1859 bfd_set_error (bfd_error_no_memory);
1860 abort(); /* FIXME */
1863 /* Death by mis-adventure. */
1865 return (elf32_hppa_stub_name_list *)NULL;
1868 /* For the given caller/callee argument location information and the
1869 type of relocation (arguments or return value), return the type
1870 of argument relocation needed to make caller and callee happy. */
1872 static arg_reloc_type
1873 type_of_mismatch (caller_bits, callee_bits, type)
1881 return mismatches[caller_bits][callee_bits];
1883 return retval_mismatches[caller_bits][callee_bits];
1885 return ARG_RELOC_ERR;
1888 /* Extract specific argument location bits for WHICH from the
1889 the full argument location information in AR. */
1890 #define EXTRACT_ARBITS(ar, which) ((ar) >> (8 - ((which) * 2))) & 3
1892 /* Add the new instruction INSN into the stub area denoted by ENTRY.
1893 FIXME: Looks like more cases where we assume sizeof (int) ==
1894 sizeof (insn) which may not be true if building cross tools. */
1895 #define NEW_INSTRUCTION(entry, insn) \
1897 *((entry)->stub_desc->stub_secp)++ = (insn); \
1898 (entry)->stub_desc->real_size += sizeof (int); \
1899 (entry)->size += sizeof(int); \
1900 bfd_set_section_size((entry)->stub_desc->this_bfd, \
1901 (entry)->stub_desc->stub_sec, \
1902 (entry)->stub_desc->real_size); \
1905 /* Find the offset of the current stub? Looks more like it
1906 finds the offset of the last instruction to me. */
1907 #define CURRENT_STUB_OFFSET(entry) \
1908 ((char *)(entry)->stub_desc->stub_secp \
1909 - (char *)(entry)->stub_desc->stub_contents - 4)
1911 /* All the stubs have already been built, finish up stub stuff
1912 by applying relocations to the stubs. */
1915 hppa_elf_stub_finish (output_bfd)
1918 elf32_hppa_stub_description *stub_list = elf_hppa_stub_rootP;
1920 /* If the stubs have been finished, then we're already done. */
1924 /* Walk down the list of stub lists. */
1925 for (; stub_list; stub_list = stub_list->next)
1927 /* If this list has stubs, then do something. */
1928 if (stub_list->real_size)
1930 bfd *stub_bfd = stub_list->this_bfd;
1931 asection *stub_sec = bfd_get_section_by_name (stub_bfd,
1932 ".hppa_linker_stubs");
1934 arelent **reloc_vector;
1937 /* Some sanity checking. */
1938 BFD_ASSERT (stub_sec == stub_list->stub_sec);
1939 BFD_ASSERT (stub_sec);
1941 /* For stub sections raw_size == cooked_size. Also update
1942 reloc_done as we're handling the relocs now. */
1943 stub_sec->_cooked_size = stub_sec->_raw_size;
1944 stub_sec->reloc_done = true;
1946 /* Make space to hold the relocations for the stub section. */
1947 reloc_size = bfd_get_reloc_upper_bound (stub_bfd, stub_sec);
1950 /* FIXME: Should return an error. */
1953 reloc_vector = (arelent **) malloc (reloc_size);
1954 if (reloc_vector == NULL && reloc_size != 0)
1956 /* FIXME: should be returning an error so the caller can
1961 /* If we have relocations, do them. */
1962 reloc_count = bfd_canonicalize_reloc (stub_bfd, stub_sec,
1964 output_bfd->outsymbols);
1965 if (reloc_count < 0)
1967 /* FIXME: Should return an error. */
1970 if (reloc_count > 0)
1973 for (parent = reloc_vector; *parent != NULL; parent++)
1976 bfd_reloc_status_type r =
1977 bfd_perform_relocation (stub_bfd, *parent,
1978 stub_list->stub_contents,
1979 stub_sec, (bfd *) NULL, &err);
1981 /* If there was an error, tell someone about it. */
1982 if (r != bfd_reloc_ok)
1984 struct bfd_link_info *link_info = stub_list->link_info;
1988 case bfd_reloc_undefined:
1989 if (! ((*link_info->callbacks->undefined_symbol)
1991 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
1992 stub_bfd, stub_sec, (*parent)->address)))
1995 case bfd_reloc_dangerous:
1996 if (! ((*link_info->callbacks->reloc_dangerous)
1997 (link_info, err, stub_bfd, stub_sec,
1998 (*parent)->address)))
2001 case bfd_reloc_overflow:
2003 if (! ((*link_info->callbacks->reloc_overflow)
2005 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
2006 (*parent)->howto->name,
2009 (*parent)->address)))
2013 case bfd_reloc_outofrange:
2021 free (reloc_vector);
2023 /* All done with the relocations. Set the final contents
2024 of the stub section. FIXME: no check of return value! */
2025 bfd_set_section_contents (output_bfd, stub_sec,
2026 stub_list->stub_contents,
2027 0, stub_list->real_size);
2031 stubs_finished = true;
2034 /* Allocate a new relocation entry to be used in a linker stub. */
2037 hppa_elf_stub_reloc (stub_desc, output_bfd, target_sym, offset, type)
2038 elf32_hppa_stub_description *stub_desc;
2040 asymbol **target_sym;
2042 elf32_hppa_reloc_type type;
2046 Elf_Internal_Shdr *rela_hdr;
2048 /* I really don't like the realloc nonsense in here. FIXME. */
2049 if (stub_desc->relocs_allocated_cnt == stub_desc->stub_sec->reloc_count)
2051 /* Allocate the first few relocation entries. */
2052 if (stub_desc->stub_sec->relocation == NULL)
2054 stub_desc->relocs_allocated_cnt = STUB_RELOC_INCR;
2055 size = sizeof (arelent) * stub_desc->relocs_allocated_cnt;
2056 stub_desc->stub_sec->relocation = (arelent *) bfd_zmalloc (size);
2060 /* We've used all the entries we've already allocated. So get
2062 stub_desc->relocs_allocated_cnt += STUB_RELOC_INCR;
2063 size = sizeof (arelent) * stub_desc->relocs_allocated_cnt;
2064 stub_desc->stub_sec->relocation = (arelent *)
2065 realloc (stub_desc->stub_sec->relocation, size);
2067 if (!stub_desc->stub_sec->relocation)
2069 bfd_set_error (bfd_error_no_memory);
2070 abort (); /* FIXME */
2074 rela_hdr = &elf_section_data(stub_desc->stub_sec)->rel_hdr;
2075 rela_hdr->sh_size += sizeof(Elf32_External_Rela);
2077 /* Fill in the details. */
2078 relent.address = offset;
2080 relent.sym_ptr_ptr = target_sym;
2081 relent.howto = bfd_reloc_type_lookup (stub_desc->this_bfd, type);
2083 /* Save it in the array of relocations for the stub section. */
2084 memcpy (&stub_desc->stub_sec->relocation[stub_desc->stub_sec->reloc_count++],
2085 &relent, sizeof (arelent));
2088 /* Build an argument relocation stub. RTN_ADJUST is a hint that an
2089 adjust to the return pointer from within the stub itself may be
2093 hppa_elf_build_linker_stub (abfd, output_bfd, link_info, reloc_entry,
2094 stub_types, rtn_adjust, data, linker_stub_type)
2097 struct bfd_link_info *link_info;
2098 arelent *reloc_entry;
2099 arg_reloc_type stub_types[5];
2102 hppa_stub_type linker_stub_type;
2105 boolean milli, dyncall;
2106 char stub_sym_name[128];
2107 elf32_hppa_stub_name_list *stub_entry;
2108 /* Some initialization. */
2109 unsigned insn = data[0];
2110 asymbol *stub_sym = NULL;
2111 asymbol **orig_sym = reloc_entry->sym_ptr_ptr;
2112 asection *stub_sec = bfd_get_section_by_name (abfd, ".hppa_linker_stubs");
2113 elf32_hppa_stub_description *stub_desc = find_stubs (abfd, stub_sec);
2115 /* Perform some additional checks on whether we should really do the
2116 return adjustment. For example, if the instruction is nullified
2117 or if the delay slot contains an instruction that modifies the return
2118 pointer, then the branch instructions should not be rearranged
2119 (rtn_adjust is false). */
2120 if (insn & 2 || insn == 0)
2124 unsigned delay_insn = data[1];
2126 if (get_opcode (delay_insn) == LDO
2127 && (((insn & 0x03e00000) >> 21) == ((delay_insn & 0x001f0000) >> 16)))
2131 /* Some special code for long-call stubs. */
2132 if (linker_stub_type == HPPA_STUB_LONG_CALL)
2135 /* Is this a millicode call? If so, the return address
2136 comes in on r31 rather than r2 (rp) so a slightly
2137 different code sequence is needed. */
2138 unsigned rtn_reg = (insn & 0x03e00000) >> 21;
2142 /* Dyncall is special because the user code has already
2143 put the return pointer in %r2 (aka RP). Other millicode
2144 calls have the return pointer in %r31. */
2145 if (strcmp ((*orig_sym)->name, "$$dyncall") == 0)
2148 /* If we are creating a call from a stub to another stub, then
2149 never do the instruction reordering. We can tell if we are
2150 going to be calling one stub from another by the fact that
2151 the symbol name has '_stub_' (arg. reloc. stub) or '_lb_stub_'
2152 prepended to the name. Alternatively, the section of the
2153 symbol will be '.hppa_linker_stubs'. This is only an issue
2154 for long-calls; they are the only stubs allowed to call another
2156 if ((strncmp ((*orig_sym)->name, "_stub_", 6) == 0)
2157 || (strncmp ((*orig_sym)->name, "_lb_stub_", 9) == 0))
2159 BFD_ASSERT (strcmp ((*orig_sym)->section->name, ".hppa_linker_stubs")
2165 /* Create the stub section if necessary. */
2168 BFD_ASSERT (stub_desc == NULL);
2169 hppa_elf_create_stub_sec (abfd, output_bfd, &stub_sec, link_info);
2170 stub_desc = new_stub (abfd, stub_sec, link_info);
2173 /* Make the stub if we did not find one already. */
2175 stub_desc = new_stub (abfd, stub_sec, link_info);
2177 /* Allocate space to write the stub.
2178 FIXME: Why using realloc?!? */
2179 if (!stub_desc->stub_contents)
2181 stub_desc->allocated_size = STUB_BUFFER_INCR;
2182 stub_desc->stub_contents = (char *) malloc (STUB_BUFFER_INCR);
2184 else if ((stub_desc->allocated_size - stub_desc->real_size) < STUB_MAX_SIZE)
2186 stub_desc->allocated_size = stub_desc->allocated_size + STUB_BUFFER_INCR;
2187 stub_desc->stub_contents = (char *) realloc (stub_desc->stub_contents,
2188 stub_desc->allocated_size);
2191 /* If no memory die. (I seriously doubt the other routines
2192 are prepared to get a NULL return value). */
2193 if (!stub_desc->stub_contents)
2195 bfd_set_error (bfd_error_no_memory);
2199 /* Generate an appropriate name for this stub. */
2200 if (linker_stub_type == HPPA_STUB_ARG_RELOC)
2201 sprintf (stub_sym_name,
2202 "_stub_%s_%02d_%02d_%02d_%02d_%02d_%s",
2203 reloc_entry->sym_ptr_ptr[0]->name,
2204 stub_types[0], stub_types[1], stub_types[2],
2205 stub_types[3], stub_types[4],
2206 rtn_adjust ? "RA" : "");
2208 sprintf (stub_sym_name,
2209 "_lb_stub_%s_%s", reloc_entry->sym_ptr_ptr[0]->name,
2210 rtn_adjust ? "RA" : "");
2213 stub_desc->stub_secp
2214 = (int *) (stub_desc->stub_contents + stub_desc->real_size);
2215 stub_entry = find_stub_by_name (abfd, stub_sec, stub_sym_name);
2217 /* See if we already have one by this name. */
2220 /* Yes, re-use it. Redirect the original relocation from the
2221 old symbol (a function symbol) to the stub (the stub will call
2222 the original function). */
2223 stub_sym = stub_entry->sym;
2224 reloc_entry->sym_ptr_ptr = (asymbol **) bfd_zalloc (abfd,
2225 sizeof (asymbol **));
2226 if (reloc_entry->sym_ptr_ptr == NULL)
2228 bfd_set_error (bfd_error_no_memory);
2231 reloc_entry->sym_ptr_ptr[0] = stub_sym;
2232 if (linker_stub_type == HPPA_STUB_LONG_CALL
2233 || (reloc_entry->howto->type != R_HPPA_PLABEL_32
2234 && (get_opcode(insn) == BLE
2235 || get_opcode (insn) == BE
2236 || get_opcode (insn) == BL)))
2237 reloc_entry->howto = bfd_reloc_type_lookup (abfd, R_HPPA_STUB_CALL_17);
2241 /* Create a new symbol to point to this stub. */
2242 stub_sym = bfd_make_empty_symbol (abfd);
2245 bfd_set_error (bfd_error_no_memory);
2248 stub_sym->name = bfd_zalloc (abfd, strlen (stub_sym_name) + 1);
2249 if (!stub_sym->name)
2251 bfd_set_error (bfd_error_no_memory);
2254 strcpy ((char *) stub_sym->name, stub_sym_name);
2256 = (char *) stub_desc->stub_secp - (char *) stub_desc->stub_contents;
2257 stub_sym->section = stub_sec;
2258 stub_sym->flags = BSF_LOCAL | BSF_FUNCTION;
2259 stub_entry = add_stub_by_name (abfd, stub_sec, stub_sym, link_info);
2261 /* Redirect the original relocation from the old symbol (a function)
2262 to the stub (the stub calls the function). */
2263 reloc_entry->sym_ptr_ptr = (asymbol **) bfd_zalloc (abfd,
2264 sizeof (asymbol **));
2265 if (reloc_entry->sym_ptr_ptr == NULL)
2267 bfd_set_error (bfd_error_no_memory);
2270 reloc_entry->sym_ptr_ptr[0] = stub_sym;
2271 if (linker_stub_type == HPPA_STUB_LONG_CALL
2272 || (reloc_entry->howto->type != R_HPPA_PLABEL_32
2273 && (get_opcode (insn) == BLE
2274 || get_opcode (insn) == BE
2275 || get_opcode (insn) == BL)))
2276 reloc_entry->howto = bfd_reloc_type_lookup (abfd, R_HPPA_STUB_CALL_17);
2278 /* Now generate the code for the stub. Starting with two
2279 common instructions.
2281 FIXME: Do we still need the SP adjustment?
2282 Do we still need to muck with space registers? */
2283 NEW_INSTRUCTION (stub_entry, LDSID_31_1)
2284 NEW_INSTRUCTION (stub_entry, MTSP_1_SR0)
2286 if (linker_stub_type == HPPA_STUB_ARG_RELOC)
2288 NEW_INSTRUCTION (stub_entry, ADDI_8_SP)
2290 /* Examine each argument, generating code to relocate it
2291 into a different register if necessary. */
2292 for (i = ARG0; i < ARG3; i++)
2294 switch (stub_types[i])
2304 NEW_INSTRUCTION (stub_entry, STWS_ARG0_M8SP)
2305 NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG0)
2308 NEW_INSTRUCTION (stub_entry, STWS_ARG1_M8SP)
2309 NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG1)
2312 NEW_INSTRUCTION (stub_entry, STWS_ARG2_M8SP)
2313 NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG2)
2316 NEW_INSTRUCTION (stub_entry, STWS_ARG3_M8SP)
2317 NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG3)
2326 NEW_INSTRUCTION (stub_entry, STWS_ARG0_M4SP)
2327 NEW_INSTRUCTION (stub_entry, STWS_ARG1_M8SP)
2328 NEW_INSTRUCTION (stub_entry, FLDDS_M8SP_FARG1)
2340 NEW_INSTRUCTION (stub_entry, STWS_ARG2_M4SP)
2341 NEW_INSTRUCTION (stub_entry, STWS_ARG3_M8SP)
2342 NEW_INSTRUCTION (stub_entry, FLDDS_M8SP_FARG3)
2354 NEW_INSTRUCTION (stub_entry, FSTWS_FARG0_M8SP)
2355 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG0)
2358 NEW_INSTRUCTION (stub_entry, FSTWS_FARG1_M8SP)
2359 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG1)
2362 NEW_INSTRUCTION (stub_entry, FSTWS_FARG2_M8SP)
2363 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG2)
2366 NEW_INSTRUCTION (stub_entry, FSTWS_FARG3_M8SP)
2367 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG3)
2376 NEW_INSTRUCTION (stub_entry, FSTDS_FARG1_M8SP)
2377 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG0)
2378 NEW_INSTRUCTION (stub_entry, LDWS_M8SP_ARG1)
2390 NEW_INSTRUCTION (stub_entry, FSTDS_FARG3_M8SP)
2391 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG2)
2392 NEW_INSTRUCTION (stub_entry, LDWS_M8SP_ARG3)
2406 /* Put the stack pointer back. FIXME: Is this still necessary? */
2407 NEW_INSTRUCTION (stub_entry, ADDI_M8_SP_SP)
2410 /* Common code again. Return pointer adjustment and the like. */
2413 /* This isn't dyncall. */
2416 /* It's not a millicode call, so get the correct return
2417 value into %r2 (aka RP). */
2419 NEW_INSTRUCTION (stub_entry, ADDI_M4_31_RP)
2421 NEW_INSTRUCTION (stub_entry, COPY_31_2)
2425 /* It is a millicode call, so get the correct return
2426 value into %r1?!?. FIXME: Shouldn't this be
2427 %r31? Yes, and a little re-arrangement of the
2428 code below would make that possible. */
2430 NEW_INSTRUCTION (stub_entry, ADDI_M4_31_1)
2432 NEW_INSTRUCTION (stub_entry, COPY_31_1)
2437 /* This is dyncall, so the code is a little different as the
2438 return pointer is already in %r2 (aka RP). */
2440 NEW_INSTRUCTION (stub_entry, ADDI_M4_31_RP)
2443 /* Save the return address. */
2444 if (linker_stub_type == HPPA_STUB_ARG_RELOC)
2445 NEW_INSTRUCTION (stub_entry, STW_RP_M8SP)
2447 /* Long branch to the target function. */
2448 NEW_INSTRUCTION (stub_entry, LDIL_XXX_31)
2449 hppa_elf_stub_reloc (stub_entry->stub_desc,
2451 CURRENT_STUB_OFFSET (stub_entry),
2453 NEW_INSTRUCTION (stub_entry, BLE_XXX_0_31)
2454 hppa_elf_stub_reloc (stub_entry->stub_desc,
2456 CURRENT_STUB_OFFSET (stub_entry),
2457 R_HPPA_ABS_CALL_R17);
2459 if (linker_stub_type == HPPA_STUB_ARG_RELOC)
2461 /* In delay slot of long-call, copy %r31 into %r2 so that
2462 the callee can return in the normal fashion. */
2463 NEW_INSTRUCTION (stub_entry, COPY_31_2)
2465 /* Restore the return address. */
2466 NEW_INSTRUCTION (stub_entry, LDW_M8SP_RP)
2468 /* Generate the code to move the return value around. */
2469 switch (stub_types[RETVAL])
2475 NEW_INSTRUCTION (stub_entry, STWS_RET0_M8SP)
2476 NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FRET0)
2480 NEW_INSTRUCTION (stub_entry, FSTWS_FRET0_M8SP)
2481 NEW_INSTRUCTION (stub_entry, LDWS_M4SP_RET0)
2489 /* Return back to the main code stream. */
2490 NEW_INSTRUCTION (stub_entry, BV_N_0_RP)
2496 /* Get return address into %r31. Both variants may be necessary
2497 (I think) as we could be cascading into another stub. */
2499 NEW_INSTRUCTION (stub_entry, COPY_2_31)
2501 NEW_INSTRUCTION (stub_entry, COPY_1_31)
2505 /* Get the return address into %r31 too. Might be necessary
2506 (I think) as we could be cascading into another stub. */
2507 NEW_INSTRUCTION (stub_entry, COPY_2_31)
2510 /* No need for a return to the main stream. */
2516 /* Return nonzero if an argument relocation will be needed to call
2517 the function (symbol in RELOC_ENTRY) assuming the caller has
2518 argument relocation bugs CALLER_AR. */
2521 hppa_elf_arg_reloc_needed_p (abfd, reloc_entry, stub_types, caller_ar)
2523 arelent *reloc_entry;
2524 arg_reloc_type stub_types[5];
2525 symext_entryS caller_ar;
2527 /* If the symbol is still undefined, then it's impossible to know
2528 if an argument relocation is needed. */
2529 if (reloc_entry->sym_ptr_ptr[0]
2530 && reloc_entry->sym_ptr_ptr[0]->section != &bfd_und_section)
2532 symext_entryS callee_ar = elf32_hppa_get_sym_extn (abfd,
2533 reloc_entry->sym_ptr_ptr[0],
2534 HPPA_SXT_ARG_RELOC);
2536 /* Now examine all the argument and return value location
2537 information to determine if a relocation stub will be needed. */
2538 if (caller_ar && callee_ar)
2540 arg_location caller_loc[5];
2541 arg_location callee_loc[5];
2543 /* Extract the location information for the return value
2544 and argument registers separately. */
2545 callee_loc[RETVAL] = EXTRACT_ARBITS (callee_ar, RETVAL);
2546 caller_loc[RETVAL] = EXTRACT_ARBITS (caller_ar, RETVAL);
2547 callee_loc[ARG0] = EXTRACT_ARBITS (callee_ar, ARG0);
2548 caller_loc[ARG0] = EXTRACT_ARBITS (caller_ar, ARG0);
2549 callee_loc[ARG1] = EXTRACT_ARBITS (callee_ar, ARG1);
2550 caller_loc[ARG1] = EXTRACT_ARBITS (caller_ar, ARG1);
2551 callee_loc[ARG2] = EXTRACT_ARBITS (callee_ar, ARG2);
2552 caller_loc[ARG2] = EXTRACT_ARBITS (caller_ar, ARG2);
2553 callee_loc[ARG3] = EXTRACT_ARBITS (callee_ar, ARG3);
2554 caller_loc[ARG3] = EXTRACT_ARBITS (caller_ar, ARG3);
2556 /* Check some special combinations. For example, if FU
2557 appears in ARG1 or ARG3, we can move it to ARG0 or ARG2,
2558 respectively. (I guess this braindamage is correct? It'd
2559 take an hour or two of reading PA calling conventions to
2562 if (caller_loc[ARG0] == AR_FU || caller_loc[ARG1] == AR_FU)
2564 caller_loc[ARG0] = AR_DBL01;
2565 caller_loc[ARG1] = AR_NO;
2567 if (caller_loc[ARG2] == AR_FU || caller_loc[ARG3] == AR_FU)
2569 caller_loc[ARG2] = AR_DBL23;
2570 caller_loc[ARG3] = AR_NO;
2572 if (callee_loc[ARG0] == AR_FU || callee_loc[ARG1] == AR_FU)
2574 callee_loc[ARG0] = AR_DBL01;
2575 callee_loc[ARG1] = AR_NO;
2577 if (callee_loc[ARG2] == AR_FU || callee_loc[ARG3] == AR_FU)
2579 callee_loc[ARG2] = AR_DBL23;
2580 callee_loc[ARG3] = AR_NO;
2583 /* Now look up potential mismatches. */
2584 stub_types[ARG0] = type_of_mismatch (caller_loc[ARG0],
2587 stub_types[ARG1] = type_of_mismatch (caller_loc[ARG1],
2590 stub_types[ARG2] = type_of_mismatch (caller_loc[ARG2],
2593 stub_types[ARG3] = type_of_mismatch (caller_loc[ARG3],
2596 stub_types[RETVAL] = type_of_mismatch (caller_loc[RETVAL],
2600 /* If any of the arguments or return value need an argument
2601 relocation, then we will need an argument relocation stub. */
2602 if (stub_types[ARG0] != NO_ARG_RELOC
2603 || stub_types[ARG1] != NO_ARG_RELOC
2604 || stub_types[ARG2] != NO_ARG_RELOC
2605 || stub_types[ARG3] != NO_ARG_RELOC
2606 || stub_types[RETVAL] != NO_ARG_RELOC)
2613 /* Create the linker stub section. */
2616 hppa_elf_create_stub_sec (abfd, output_bfd, secptr, link_info)
2620 struct bfd_link_info *link_info;
2622 asection *output_text_section;
2624 output_text_section = bfd_get_section_by_name (output_bfd, ".text");
2625 *secptr = bfd_make_section (abfd, ".hppa_linker_stubs");
2626 bfd_set_section_flags (abfd, *secptr,
2627 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
2628 | SEC_RELOC | SEC_CODE | SEC_READONLY);
2629 (*secptr)->output_section = output_text_section->output_section;
2630 (*secptr)->output_offset = 0;
2632 /* Set up the ELF section header for this new section. This
2633 is basically the same processing as elf_make_sections().
2634 elf_make_sections is static and therefore not accessable
2637 Elf_Internal_Shdr *this_hdr;
2638 this_hdr = &elf_section_data ((*secptr))->this_hdr;
2640 /* Set the sizes of this section. The contents have already
2642 this_hdr->sh_addr = (*secptr)->vma;
2643 this_hdr->sh_size = (*secptr)->_raw_size;
2645 /* Set appropriate flags for sections with relocations. */
2646 if ((*secptr)->flags & SEC_RELOC)
2648 Elf_Internal_Shdr *rela_hdr;
2649 int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
2651 rela_hdr = &elf_section_data ((*secptr))->rel_hdr;
2655 rela_hdr->sh_type = SHT_RELA;
2656 rela_hdr->sh_entsize = sizeof (Elf32_External_Rela);
2660 rela_hdr->sh_type = SHT_REL;
2661 rela_hdr->sh_entsize = sizeof (Elf32_External_Rel);
2663 rela_hdr->sh_flags = 0;
2664 rela_hdr->sh_addr = 0;
2665 rela_hdr->sh_offset = 0;
2666 rela_hdr->sh_addralign = 0;
2670 if ((*secptr)->flags & SEC_ALLOC)
2671 this_hdr->sh_flags |= SHF_ALLOC;
2673 if (!((*secptr)->flags & SEC_READONLY))
2674 this_hdr->sh_flags |= SHF_WRITE;
2676 if ((*secptr)->flags & SEC_CODE)
2677 this_hdr->sh_flags |= SHF_EXECINSTR;
2680 bfd_set_section_alignment (abfd, *secptr, 2);
2683 /* Return nonzero if a long-call stub will be needed to call the
2684 function (symbol in RELOC_ENTRY). */
2687 hppa_elf_long_branch_needed_p (abfd, asec, reloc_entry, symbol, insn)
2690 arelent *reloc_entry;
2694 long sym_value = get_symbol_value (symbol);
2695 int fmt = reloc_entry->howto->bitsize;
2696 unsigned char op = get_opcode (insn);
2699 #define too_far(val,num_bits) \
2700 ((int)(val) > (1 << (num_bits)) - 1) || ((int)(val) < (-1 << (num_bits)))
2706 reloc_entry->address + asec->output_offset + asec->output_section->vma;
2707 /* If the symbol and raddr (relocated addr?) are too far away from
2708 each other, then a long-call stub will be needed. */
2709 if (too_far (sym_value - raddr, fmt + 1))
2716 /* Search the given section and determine if linker stubs will be
2717 needed for any calls within that section.
2719 Return any new stub symbols created.
2721 Used out of hppaelf.em in the linker. */
2724 hppa_look_for_stubs_in_section (stub_bfd, abfd, output_bfd, asec,
2725 new_sym_cnt, link_info)
2731 struct bfd_link_info *link_info;
2734 arg_reloc_type stub_types[5];
2735 asymbol *new_syms = NULL;
2738 arelent **reloc_vector = NULL;
2740 /* Relocations are in different places depending on whether this is
2741 an output section or an input section. Also, the relocations are
2742 in different forms. Sigh. Luckily, we have bfd_canonicalize_reloc()
2743 to straighten this out for us . */
2744 if (asec->reloc_count > 0)
2747 = (arelent **) malloc (asec->reloc_count * (sizeof (arelent *) + 1));
2748 if (reloc_vector == NULL)
2750 bfd_set_error (bfd_error_no_memory);
2754 /* Make sure the canonical symbols are hanging around in a convient
2756 if (bfd_get_outsymbols (abfd) == NULL)
2761 symsize = bfd_get_symtab_upper_bound (abfd);
2764 abfd->outsymbols = (asymbol **) bfd_alloc (abfd, symsize);
2765 if (!abfd->outsymbols && symsize != 0)
2767 bfd_set_error (bfd_error_no_memory);
2770 symcount = bfd_canonicalize_symtab (abfd, abfd->outsymbols);
2773 abfd->symcount = symcount;
2776 /* Now get the relocations. */
2777 if (bfd_canonicalize_reloc (abfd, asec, reloc_vector,
2778 bfd_get_outsymbols (abfd)) < 0)
2781 /* Examine each relocation entry in this section. */
2782 for (i = 0; i < asec->reloc_count; i++)
2784 arelent *rle = reloc_vector[i];
2786 switch (rle->howto->type)
2788 /* Any call could need argument relocation stubs, and
2789 some may need long-call stubs. */
2790 case R_HPPA_ABS_CALL_11:
2791 case R_HPPA_ABS_CALL_14:
2792 case R_HPPA_ABS_CALL_17:
2793 case R_HPPA_ABS_CALL_L21:
2794 case R_HPPA_ABS_CALL_R11:
2795 case R_HPPA_ABS_CALL_R14:
2796 case R_HPPA_ABS_CALL_R17:
2797 case R_HPPA_ABS_CALL_LS21:
2798 case R_HPPA_ABS_CALL_RS11:
2799 case R_HPPA_ABS_CALL_RS14:
2800 case R_HPPA_ABS_CALL_RS17:
2801 case R_HPPA_ABS_CALL_LD21:
2802 case R_HPPA_ABS_CALL_RD11:
2803 case R_HPPA_ABS_CALL_RD14:
2804 case R_HPPA_ABS_CALL_RD17:
2805 case R_HPPA_ABS_CALL_LR21:
2806 case R_HPPA_ABS_CALL_RR14:
2807 case R_HPPA_ABS_CALL_RR17:
2808 case R_HPPA_PCREL_CALL_11:
2809 case R_HPPA_PCREL_CALL_14:
2810 case R_HPPA_PCREL_CALL_17:
2811 case R_HPPA_PCREL_CALL_12:
2812 case R_HPPA_PCREL_CALL_L21:
2813 case R_HPPA_PCREL_CALL_R11:
2814 case R_HPPA_PCREL_CALL_R14:
2815 case R_HPPA_PCREL_CALL_R17:
2816 case R_HPPA_PCREL_CALL_LS21:
2817 case R_HPPA_PCREL_CALL_RS11:
2818 case R_HPPA_PCREL_CALL_RS14:
2819 case R_HPPA_PCREL_CALL_RS17:
2820 case R_HPPA_PCREL_CALL_LD21:
2821 case R_HPPA_PCREL_CALL_RD11:
2822 case R_HPPA_PCREL_CALL_RD14:
2823 case R_HPPA_PCREL_CALL_RD17:
2824 case R_HPPA_PCREL_CALL_LR21:
2825 case R_HPPA_PCREL_CALL_RR14:
2826 case R_HPPA_PCREL_CALL_RR17:
2828 symext_entryS caller_ar
2829 = (symext_entryS) HPPA_R_ARG_RELOC (rle->addend);
2832 /* We'll need this for the long-call checks. */
2833 bfd_get_section_contents (abfd, asec, insn, rle->address,
2836 /* See if this call needs an argument relocation stub. */
2837 if (hppa_elf_arg_reloc_needed_p (abfd, rle, stub_types,
2840 /* Generate a stub and keep track of the new symbol. */
2843 if (new_cnt == new_max)
2845 new_max += STUB_SYM_BUFFER_INC;
2846 new_syms = (asymbol *)
2847 realloc (new_syms, new_max * sizeof (asymbol));
2848 if (new_syms == NULL)
2850 bfd_set_error (bfd_error_no_memory);
2855 /* Build the argument relocation stub. */
2856 r = hppa_elf_build_linker_stub (stub_bfd, output_bfd,
2858 stub_types, true, insn,
2859 HPPA_STUB_ARG_RELOC);
2860 new_syms[new_cnt++] = *r;
2863 /* See if this call needs a long-call stub. */
2864 if (hppa_elf_long_branch_needed_p (abfd, asec, rle,
2865 rle->sym_ptr_ptr[0],
2868 /* Generate a stub and keep track of the new symbol. */
2871 if (new_cnt == new_max)
2873 new_max += STUB_SYM_BUFFER_INC;
2874 new_syms = (asymbol *)
2875 realloc (new_syms, (new_max * sizeof (asymbol)));
2878 bfd_set_error (bfd_error_no_memory);
2883 /* Build the long-call stub. */
2884 r = hppa_elf_build_linker_stub (stub_bfd, output_bfd,
2887 HPPA_STUB_LONG_CALL);
2888 new_syms[new_cnt++] = *r;
2893 /* PLABELs may need argument relocation stubs. */
2894 case R_HPPA_PLABEL_32:
2895 case R_HPPA_PLABEL_11:
2896 case R_HPPA_PLABEL_14:
2897 case R_HPPA_PLABEL_L21:
2898 case R_HPPA_PLABEL_R11:
2899 case R_HPPA_PLABEL_R14:
2901 /* On a plabel relocation, assume the arguments of the
2902 caller are set up in general registers (indirect
2903 calls only use general registers.
2904 NOTE: 0x155 = ARGW0=GR,ARGW1=GR,ARGW2=GR,RETVAL=GR. */
2905 symext_entryS caller_ar = (symext_entryS) 0x155;
2908 /* Do we really need this? */
2909 bfd_get_section_contents (abfd, asec, insn, rle->address,
2912 /* See if this call needs an argument relocation stub. */
2913 if (hppa_elf_arg_reloc_needed_p (abfd, rle, stub_types,
2916 /* Generate a plabel stub and keep track of the
2921 if (new_cnt == new_max)
2923 new_max += STUB_SYM_BUFFER_INC;
2924 new_syms = (asymbol *) realloc (new_syms, new_max
2925 * sizeof (asymbol));
2928 /* Determine whether a return adjustment
2929 (see the relocation code for relocation type
2930 R_HPPA_STUB_CALL_17) is possible. Basically,
2931 determine whether we are looking at a branch or not. */
2932 if (rle->howto->type == R_HPPA_PLABEL_32)
2936 switch (get_opcode(insn[0]))
2947 /* Build the argument relocation stub. */
2948 r = hppa_elf_build_linker_stub (stub_bfd, output_bfd,
2949 link_info, rle, stub_types,
2951 HPPA_STUB_ARG_RELOC);
2952 new_syms[new_cnt++] = *r;
2963 if (reloc_vector != NULL)
2964 free (reloc_vector);
2965 /* Return the new symbols and update the counters. */
2966 *new_sym_cnt = new_cnt;
2970 if (reloc_vector != NULL)
2971 free (reloc_vector);
2972 /* FIXME: This is bogus. We should be returning NULL. But do the callers
2977 /* Set the contents of a particular section at a particular location. */
2980 hppa_elf_set_section_contents (abfd, section, location, offset, count)
2985 bfd_size_type count;
2987 /* Linker stubs are handled a little differently. */
2988 if (! strcmp (section->name, ".hppa_linker_stubs"))
2990 if (linker_stubs_max_size < offset + count)
2992 linker_stubs_max_size = offset + count + STUB_ALLOC_INCR;
2993 linker_stubs = (char *)realloc (linker_stubs, linker_stubs_max_size);
2998 if (offset + count > linker_stubs_size)
2999 linker_stubs_size = offset + count;
3001 /* Set the contents. */
3002 memcpy(linker_stubs + offset, location, count);
3006 /* For everything but the linker stub section, use the generic
3008 return bfd_elf32_set_section_contents (abfd, section, location,
3012 /* Get the contents of the given section.
3014 This is special for PA ELF because some sections (such as linker stubs)
3015 may reside in memory rather than on disk, or in the case of the symbol
3016 extension section, the contents may need to be generated from other
3017 information contained in the BFD. */
3020 hppa_elf_get_section_contents (abfd, section, location, offset, count)
3025 bfd_size_type count;
3027 /* If this is the linker stub section, then its contents are contained
3028 in memory rather than on disk. FIXME. Is that always right? What
3029 about the case where a final executable is read in and a user tries
3030 to get the contents of this section? In that case the contents would
3031 be on disk like everything else. */
3032 if (strcmp (section->name, ".hppa_linker_stubs") == 0)
3034 elf32_hppa_stub_description *stub_desc = find_stubs (abfd, section);
3039 /* Sanity check our arguments. */
3040 if ((bfd_size_type) (offset + count) > section->_raw_size
3041 || (bfd_size_type) (offset + count) > stub_desc->real_size)
3044 memcpy (location, stub_desc->stub_contents + offset, count);
3048 /* The symbol extension section also needs special handling. Its
3049 contents might be on the disk, in memory, or still need to
3051 else if (strcmp (section->name, ".hppa_symextn") == 0)
3053 /* If there are no output sections, then read the contents of the
3054 symbol extension section from disk. */
3055 if (section->output_section == NULL
3056 && abfd->direction == read_direction)
3058 return _bfd_generic_get_section_contents (abfd, section, location,
3062 /* If this is the first time through, and there are output sections,
3063 then build the symbol extension section based on other information
3064 contained in the BFD. */
3065 else if (! symext_chain_built)
3069 (int *) elf_sym_extra (section->output_section->owner);
3071 for (i = 0; i < section->output_section->owner->symcount; i++)
3073 elf_hppa_tc_symbol (section->output_section->owner,
3074 ((elf_symbol_type *)
3075 section->output_section->owner->outsymbols[i]),
3076 symtab_map[i], &symext_rootP, &symext_lastP);
3078 symext_chain_built++;
3079 elf_hppa_tc_make_sections (section->output_section->owner,
3083 /* At this point we know that the symbol extension section has been
3084 built. We just need to copy it into the user's buffer. */
3088 /* Sanity check our arguments. */
3089 if ((bfd_size_type) (offset + count) > section->_raw_size
3090 || (bfd_size_type) (offset + count) > symextn_contents_real_size)
3094 (char *)symextn_contents + section->output_offset + offset,
3099 /* It's not the symbol extension or linker stub sections, use
3100 the generic routines. */
3101 return _bfd_generic_get_section_contents (abfd, section, location,
3105 /* Translate from an elf into field into a howto relocation pointer. */
3108 elf_info_to_howto (abfd, cache_ptr, dst)
3111 Elf32_Internal_Rela *dst;
3113 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_HPPA_UNIMPLEMENTED);
3114 cache_ptr->howto = &elf_hppa_howto_table[ELF32_R_TYPE (dst->r_info)];
3117 /* Do PA ELF specific processing for symbols. Needed to find the
3118 value of $global$. */
3121 elf32_hppa_backend_symbol_processing (abfd, sym)
3125 /* Is this a definition of $global$? If so, keep it because it will be
3126 needed if any relocations are performed. */
3127 if (!strcmp (sym->name, "$global$")
3128 && sym->section != &bfd_und_section)
3130 global_symbol = sym;
3134 /* Do some PA ELF specific work after reading in the symbol table.
3135 In particular attach the argument relocation from the
3136 symbol extension section to the appropriate symbols. */
3138 elf32_hppa_backend_symbol_table_processing (abfd, esyms,symcnt)
3140 elf_symbol_type *esyms;
3143 Elf32_Internal_Shdr *symextn_hdr =
3144 bfd_elf_find_section (abfd, SYMEXTN_SECTION_NAME);
3145 int i, current_sym_idx = 0;
3147 /* If no symbol extension existed, then all symbol extension information
3148 is assumed to be zero. */
3149 if (symextn_hdr == NULL)
3151 for (i = 0; i < symcnt; i++)
3152 esyms[i].tc_data.hppa_arg_reloc = 0;
3156 /* Allocate a buffer of the appropriate size for the symextn section. */
3157 symextn_hdr->contents = bfd_zalloc(abfd,symextn_hdr->sh_size);
3158 if (!symextn_hdr->contents)
3160 bfd_set_error (bfd_error_no_memory);
3163 symextn_hdr->size = symextn_hdr->sh_size;
3165 /* Read in the symextn section. */
3166 if (bfd_seek (abfd, symextn_hdr->sh_offset, SEEK_SET) == -1)
3168 if (bfd_read ((PTR) symextn_hdr->contents, 1, symextn_hdr->size, abfd)
3169 != symextn_hdr->size)
3172 /* Parse entries in the symbol extension section, updating the symtab
3174 for (i = 0; i < symextn_hdr->size / sizeof(symext_entryS); i++)
3176 symext_entryS *seP = ((symext_entryS *)symextn_hdr->contents) + i;
3177 int se_value = ELF32_HPPA_SX_VAL (*seP);
3178 int se_type = ELF32_HPPA_SX_TYPE (*seP);
3185 case HPPA_SXT_SYMNDX:
3186 if (se_value >= symcnt)
3188 bfd_set_error (bfd_error_bad_value);
3191 current_sym_idx = se_value - 1;
3194 case HPPA_SXT_ARG_RELOC:
3195 esyms[current_sym_idx].tc_data.hppa_arg_reloc = se_value;
3199 bfd_set_error (bfd_error_bad_value);
3206 /* Perform on PA ELF specific processing once a section has been
3207 read in. In particular keep the symbol indexes correct for
3208 the symbol extension information. */
3211 elf32_hppa_backend_section_processing (abfd, secthdr)
3213 Elf32_Internal_Shdr *secthdr;
3217 if (secthdr->sh_type == SHT_HPPA_SYMEXTN)
3219 for (i = 0; i < secthdr->size / sizeof (symext_entryS); i++)
3221 symext_entryS *seP = ((symext_entryS *)secthdr->contents) + i;
3222 int se_value = ELF32_HPPA_SX_VAL (*seP);
3223 int se_type = ELF32_HPPA_SX_TYPE (*seP);
3230 case HPPA_SXT_SYMNDX:
3231 for (j = 0; j < abfd->symcount; j++)
3233 /* Locate the map entry for this symbol and modify the
3234 symbol extension section symbol index entry to reflect
3235 the new symbol table index. */
3236 for (k = 0; k < elf32_hppa_symextn_map_size; k++)
3238 if (elf32_hppa_symextn_map[k].old_index == se_value
3239 && elf32_hppa_symextn_map[k].bfd
3240 == abfd->outsymbols[j]->the_bfd
3241 && elf32_hppa_symextn_map[k].sym
3242 == abfd->outsymbols[j])
3245 ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX, j),
3252 case HPPA_SXT_ARG_RELOC:
3256 bfd_set_error (bfd_error_bad_value);
3264 /* What does this really do? Just determine if there is an appropriate
3265 mapping from ELF section headers to backend sections? More symbol
3266 extension braindamage. */
3269 elf32_hppa_backend_section_from_shdr (abfd, hdr, name)
3271 Elf32_Internal_Shdr *hdr;
3276 if (hdr->sh_type == SHT_HPPA_SYMEXTN)
3278 BFD_ASSERT (strcmp (name, ".hppa_symextn") == 0);
3280 /* Bits that get saved. This one is real. */
3283 newsect = bfd_make_section (abfd, name);
3284 if (newsect != NULL)
3286 newsect->vma = hdr->sh_addr;
3287 newsect->_raw_size = hdr->sh_size;
3288 newsect->filepos = hdr->sh_offset;
3289 newsect->flags |= SEC_HAS_CONTENTS;
3290 newsect->alignment_power = hdr->sh_addralign;
3292 if (hdr->sh_flags & SHF_ALLOC)
3294 newsect->flags |= SEC_ALLOC;
3295 newsect->flags |= SEC_LOAD;
3298 if (!(hdr->sh_flags & SHF_WRITE))
3299 newsect->flags |= SEC_READONLY;
3301 if (hdr->sh_flags & SHF_EXECINSTR)
3302 newsect->flags |= SEC_CODE;
3304 newsect->flags |= SEC_DATA;
3306 hdr->rawdata = (void *) newsect;
3314 /* Return true if the given section is a fake section. */
3317 elf32_hppa_backend_fake_sections (abfd, secthdr, asect)
3319 Elf_Internal_Shdr *secthdr;
3323 if (strcmp(asect->name, ".hppa_symextn") == 0)
3325 secthdr->sh_type = SHT_HPPA_SYMEXTN;
3326 secthdr->sh_flags = 0;
3327 secthdr->sh_info = elf_section_data(asect)->rel_hdr.sh_link;
3328 secthdr->sh_link = elf_onesymtab(abfd);
3332 if (!strcmp (asect->name, ".hppa_unwind"))
3334 secthdr->sh_type = SHT_PROGBITS;
3335 /* Unwind descriptors are not part of the program memory image. */
3336 secthdr->sh_flags = 0;
3337 secthdr->sh_info = 0;
3338 secthdr->sh_link = 0;
3339 secthdr->sh_entsize = 16;
3343 /* @@ Should this be CPU specific?? KR */
3344 if (!strcmp (asect->name, ".stabstr"))
3346 secthdr->sh_type = SHT_STRTAB;
3347 secthdr->sh_flags = 0;
3348 secthdr->sh_info = 0;
3349 secthdr->sh_link = 0;
3350 secthdr->sh_entsize = 0;
3357 /* Return true if there is a mapping from bfd section into a
3361 elf32_hppa_backend_section_from_bfd_section (abfd, hdr, asect, ignored)
3363 Elf32_Internal_Shdr *hdr;
3367 if (hdr->sh_type == SHT_HPPA_SYMEXTN)
3371 if (((struct sec *) (hdr->rawdata)) == asect)
3373 BFD_ASSERT (strcmp (asect->name, ".hppa_symextn") == 0);
3378 else if (hdr->sh_type == SHT_STRTAB)
3382 if (((struct sec *) (hdr->rawdata)) == asect)
3384 BFD_ASSERT (strcmp (asect->name, ".stabstr") == 0);
3393 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
3394 #define elf_backend_section_from_bfd_section elf32_hppa_backend_section_from_bfd_section
3396 #define elf_backend_symbol_processing elf32_hppa_backend_symbol_processing
3397 #define elf_backend_symbol_table_processing elf32_hppa_backend_symbol_table_processing
3399 #define bfd_elf32_get_section_contents hppa_elf_get_section_contents
3400 #define bfd_elf32_set_section_contents hppa_elf_set_section_contents
3401 #define bfd_elf32_bfd_is_local_label hppa_elf_is_local_label
3403 #define elf_backend_section_processing elf32_hppa_backend_section_processing
3405 #define elf_backend_section_from_shdr elf32_hppa_backend_section_from_shdr
3406 #define elf_backend_fake_sections elf32_hppa_backend_fake_sections
3408 #define TARGET_BIG_SYM bfd_elf32_hppa_vec
3409 #define TARGET_BIG_NAME "elf32-hppa"
3410 #define ELF_ARCH bfd_arch_hppa
3411 #define ELF_MACHINE_CODE EM_HPPA
3412 #define ELF_MAXPAGESIZE 0x1000
3414 #include "elf32-target.h"