267 lines
9.5 KiB
C
267 lines
9.5 KiB
C
/* tc-ia64.h -- Header file for tc-ia64.c.
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Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "opcode/ia64.h"
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#include "elf/ia64.h"
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#define TC_IA64
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/* Linux is little endian by default. HPUX is big endian by default. */
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#ifdef TE_HPUX
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#define md_number_to_chars number_to_chars_bigendian
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#define TARGET_BYTES_BIG_ENDIAN 1
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#define MD_FLAGS_DEFAULT EF_IA_64_BE
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#else
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#define md_number_to_chars number_to_chars_littleendian
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#define TARGET_BYTES_BIG_ENDIAN 0
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#define MD_FLAGS_DEFAULT EF_IA_64_ABI64
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#endif /* TE_HPUX */
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/* We need to set the default object file format in ia64_init and not in
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md_begin. This is because parse_args is called before md_begin, and we
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do not want md_begin to wipe out the flag settings set by options parsed in
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md_parse_args. */
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#define HOST_SPECIAL_INIT ia64_init
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extern void ia64_init PARAMS ((int, char **));
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#define TARGET_FORMAT ia64_target_format()
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extern const char *ia64_target_format PARAMS ((void));
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#define TARGET_ARCH bfd_arch_ia64
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#define DOUBLESLASH_LINE_COMMENTS /* allow //-style comments */
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#define NEED_LITERAL_POOL /* need gp literal pool */
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#define RELOC_REQUIRES_SYMBOL
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#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
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#define NEED_INDEX_OPERATOR /* [ ] is index operator */
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#define QUOTES_IN_INSN /* allow `string "foo;bar"' */
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#define LEX_AT LEX_NAME /* allow `@' inside name */
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#define LEX_QM LEX_NAME /* allow `?' inside name */
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#define LEX_HASH LEX_END_NAME /* allow `#' ending a name */
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struct ia64_fix
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{
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int bigendian; /* byte order at fix location */
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enum ia64_opnd opnd;
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};
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extern void ia64_do_align PARAMS((int n));
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extern void ia64_end_of_source PARAMS((void));
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extern void ia64_start_line PARAMS((void));
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extern int ia64_unrecognized_line PARAMS((int ch));
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extern void ia64_frob_label PARAMS((struct symbol *sym));
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extern void ia64_flush_pending_output PARAMS((void));
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extern int ia64_parse_name (char *name, expressionS *e);
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extern int ia64_optimize_expr PARAMS((expressionS *l, operatorT op,
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expressionS *r));
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extern void ia64_cons_align PARAMS((int));
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extern void ia64_flush_insns PARAMS((void));
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extern int ia64_fix_adjustable PARAMS((struct fix *fix));
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extern int ia64_force_relocation PARAMS((struct fix *));
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extern void ia64_cons_fix_new PARAMS ((fragS *f, int where, int nbytes,
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expressionS *exp));
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extern void ia64_validate_fix PARAMS ((struct fix *fix));
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extern char * ia64_canonicalize_symbol_name PARAMS ((char *));
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extern int ia64_elf_section_letter PARAMS ((int, char **));
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extern flagword ia64_elf_section_flags PARAMS ((flagword, int, int));
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extern int ia64_elf_section_type PARAMS ((const char *, size_t len));
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extern long ia64_pcrel_from_section PARAMS ((struct fix *fix, segT sec));
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extern void ia64_md_do_align PARAMS ((int, const char *, int, int));
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extern void ia64_handle_align PARAMS ((fragS *f));
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extern void ia64_after_parse_args PARAMS ((void));
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#define md_end() ia64_end_of_source ()
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#define md_start_line_hook() ia64_start_line ()
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#define tc_unrecognized_line(ch) ia64_unrecognized_line (ch)
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#define tc_frob_label(s) ia64_frob_label (s)
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#define md_flush_pending_output() ia64_flush_pending_output ()
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#define md_parse_name(s,e,c) ia64_parse_name (s, e)
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#define tc_canonicalize_symbol_name(s) ia64_canonicalize_symbol_name (s)
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#define md_optimize_expr(l,o,r) ia64_optimize_expr (l, o, r)
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#define md_cons_align(n) ia64_cons_align (n)
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#define TC_FORCE_RELOCATION(f) ia64_force_relocation (f)
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#define tc_fix_adjustable(f) ia64_fix_adjustable (f)
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#define md_convert_frag(b,s,f) as_fatal ("ia64_convert_frag")
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#define md_create_long_jump(p,f,t,fr,s) as_fatal ("ia64_create_long_jump")
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#define md_create_short_jump(p,f,t,fr,s) \
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as_fatal ("ia64_create_short_jump")
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#define md_estimate_size_before_relax(f,s) \
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(as_fatal ("ia64_estimate_size_before_relax"), 1)
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#define md_elf_section_letter ia64_elf_section_letter
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#define md_elf_section_flags ia64_elf_section_flags
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#define TC_FIX_TYPE struct ia64_fix
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#define TC_INIT_FIX_DATA(f) { f->tc_fix_data.opnd = 0; }
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#define TC_CONS_FIX_NEW(f,o,l,e) ia64_cons_fix_new (f, o, l, e)
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#define TC_VALIDATE_FIX(fix,seg,skip) ia64_validate_fix (fix)
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#define MD_PCREL_FROM_SECTION(fix,sec) ia64_pcrel_from_section (fix, sec)
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#define md_do_align(n,f,l,m,j) ia64_md_do_align (n,f,l,m)
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#define HANDLE_ALIGN(f) ia64_handle_align (f)
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#define md_elf_section_type(str,len) ia64_elf_section_type (str, len)
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#define md_after_parse_args() ia64_after_parse_args ()
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#define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16)
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#define WORKING_DOT_WORD /* don't do broken word processing for now */
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#define ELF_TC_SPECIAL_SECTIONS \
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{ ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, \
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{ ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
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#define DWARF2_LINE_MIN_INSN_LENGTH 1 /* so slot-multipliers can be 1 */
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/* This is the information required for unwind records in an ia64
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object file. This is required by GAS and the compiler runtime. */
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/* These are the starting point masks for the various types of
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unwind records. To create a record of type R3 for instance, one
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starts by using the value UNW_R3 and or-ing in any other required values.
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These values are also unique (in context), so they can be used to identify
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the various record types as well. UNW_Bx and some UNW_Px do have the
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same value, but Px can only occur in a prologue context, and Bx in
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a body context. */
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#define UNW_R1 0x00
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#define UNW_R2 0x40
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#define UNW_R3 0x60
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#define UNW_P1 0x80
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#define UNW_P2 0xA0
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#define UNW_P3 0xB0
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#define UNW_P4 0xB8
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#define UNW_P5 0xB9
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#define UNW_P6 0xC0
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#define UNW_P7 0xE0
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#define UNW_P8 0xF0
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#define UNW_P9 0xF1
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#define UNW_P10 0xFF
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#define UNW_X1 0xF9
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#define UNW_X2 0xFA
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#define UNW_X3 0xFB
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#define UNW_X4 0xFC
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#define UNW_B1 0x80
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#define UNW_B2 0xC0
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#define UNW_B3 0xE0
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#define UNW_B4 0xF0
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/* These are all the various types of unwind records. */
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typedef enum
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{
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prologue, prologue_gr, body, mem_stack_f, mem_stack_v, psp_gr, psp_sprel,
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rp_when, rp_gr, rp_br, rp_psprel, rp_sprel, pfs_when, pfs_gr, pfs_psprel,
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pfs_sprel, preds_when, preds_gr, preds_psprel, preds_sprel,
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fr_mem, frgr_mem, gr_gr, gr_mem, br_mem, br_gr, spill_base, spill_mask,
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unat_when, unat_gr, unat_psprel, unat_sprel, lc_when, lc_gr, lc_psprel,
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lc_sprel, fpsr_when, fpsr_gr, fpsr_psprel, fpsr_sprel,
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priunat_when_gr, priunat_when_mem, priunat_gr, priunat_psprel,
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priunat_sprel, bsp_when, bsp_gr, bsp_psprel, bsp_sprel, bspstore_when,
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bspstore_gr, bspstore_psprel, bspstore_sprel, rnat_when, rnat_gr,
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rnat_psprel, rnat_sprel, epilogue, label_state, copy_state,
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spill_psprel, spill_sprel, spill_reg, spill_psprel_p, spill_sprel_p,
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spill_reg_p, unwabi
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} unw_record_type;
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/* These structures declare the fields that can be used in each of the
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4 record formats, R, P, B and X. */
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typedef struct unw_r_record
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{
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unsigned long rlen;
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unsigned short grmask;
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unsigned short grsave;
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/* masks to represent the union of save.g, save.f, save.b, and
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save.gf: */
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unsigned long imask_size;
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struct
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{
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unsigned char *i;
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unsigned long fr_mem;
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unsigned char gr_mem;
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unsigned char br_mem;
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} mask;
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} unw_r_record;
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typedef struct unw_p_record
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{
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void *imask;
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unsigned long t;
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unsigned long size;
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unsigned long spoff;
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unsigned long br;
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unsigned long pspoff;
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unsigned short gr;
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unsigned short rmask;
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unsigned short grmask;
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unsigned long frmask;
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unsigned short brmask;
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unsigned char abi;
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unsigned char context;
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} unw_p_record;
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typedef struct unw_b_record
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{
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unsigned long t;
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unsigned long label;
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unsigned short ecount;
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} unw_b_record;
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typedef struct unw_x_record
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{
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unsigned long t;
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unsigned long spoff;
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unsigned long pspoff;
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unsigned short reg;
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unsigned short treg;
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unsigned short qp;
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unsigned short ab; /* Value of the AB field.. */
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unsigned short xy; /* Value of the XY field.. */
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} unw_x_record;
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/* This structure is used to determine the specific record type and
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its fields. */
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typedef struct unwind_record
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{
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unw_record_type type;
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union {
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unw_r_record r;
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unw_p_record p;
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unw_b_record b;
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unw_x_record x;
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} record;
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} unwind_record;
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/* This expression evaluates to false if the relocation is for a local
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object for which we still want to do the relocation at runtime.
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True if we are willing to perform this relocation while building
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the .o file. This is only used for pcrel relocations. */
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/* If the reloc type is BFD_RELOC_UNUSED, then this is for a TAG13/TAG13b field
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which has no external reloc, so we must resolve the value now. */
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#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
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((FIX)->fx_addsy == NULL \
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|| (FIX)->fx_r_type == BFD_RELOC_UNUSED \
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|| (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
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&& ! S_IS_WEAK ((FIX)->fx_addsy) \
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&& S_IS_DEFINED ((FIX)->fx_addsy) \
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&& ! S_IS_COMMON ((FIX)->fx_addsy)))
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