/* write.h
-
- Copyright (C) 1987, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#ifndef TC_I960
-#ifdef hpux
-#define EXEC_MACHINE_TYPE HP9000S200_ID
-#endif
-#endif /* TC_I960 */
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
-#ifndef LOCAL_LABEL
-#ifdef DOT_LABEL_PREFIX
-#define LOCAL_LABEL(name) (name[0] =='.' \
- && ( name [1] == 'L' || name [1] == '.' ))
-#else /* not defined DOT_LABEL_PREFIX */
-#define LOCAL_LABEL(name) (name [0] == 'L' )
-#endif /* not defined DOT_LABEL_PREFIX */
-#endif /* LOCAL_LABEL */
+#ifndef __write_h__
+#define __write_h__
-#define S_LOCAL_NAME(s) (LOCAL_LABEL(S_GET_NAME(s)))
+/* This is the name of a fake symbol which will never appear in the
+ assembler output. S_IS_LOCAL detects it because of the \001. */
+#ifndef FAKE_LABEL_NAME
+#define FAKE_LABEL_NAME "L0\001"
+#endif
-#include "bit_fix.h"
+/* This is a special character that is used to indicate a fake label.
+ It must be present in FAKE_LABEL_NAME, although it does not have to
+ be the first character. It must not be a character that would be
+ found in a valid symbol name.
+
+ Also be aware that the function _bfd_elf_is_local_label_name in
+ bfd/elf.c has an implicit assumption that FAKE_LABEL_CHAR is '\001'.
+ If this is not the case then FAKE_LABEL_NAME must start with ".L" in
+ order for the function to continue working. */
+#ifndef FAKE_LABEL_CHAR
+#define FAKE_LABEL_CHAR '\001'
+#endif
/*
* FixSs may be built up in any order.
*/
struct fix
- {
- fragS *fx_frag; /* Which frag? */
- long fx_where; /* Where is the 1st byte to fix up? */
- symbolS *fx_addsy; /* NULL or Symbol whose value we add in. */
- symbolS *fx_subsy; /* NULL or Symbol whose value we subtract. */
- long fx_offset; /* Absolute number we add in. */
- struct fix *fx_next; /* NULL or -> next fixS. */
- short int fx_size; /* How many bytes are involved? */
- char fx_pcrel; /* TRUE: pc-relative. */
- char fx_pcrel_adjust; /* pc-relative offset adjust */
- char fx_im_disp; /* TRUE: value is a displacement */
- bit_fixS *fx_bit_fixP; /* IF NULL no bitfix's to do */
- char fx_bsr; /* sequent-hack */
-#if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE)
- /* Hacks for machines where the type of reloc can't be
- worked out by looking at how big it is */
-
- int fx_r_type;
-#endif
- char fx_callj; /* TRUE if target is a 'callj' (used by i960) */
- long fx_addnumber;
- };
+{
+ /* Next fixS in linked list, or NULL. */
+ struct fix *fx_next;
-typedef struct fix fixS;
+ /* These small fields are grouped together for compactness of
+ this structure, and efficiency of access on some architectures. */
-COMMON char *next_object_file_charP;
+ /* Is this a pc-relative relocation? */
+ unsigned fx_pcrel : 1;
-#ifndef MANY_SEGMENTS
-COMMON fixS *text_fix_root, *text_fix_tail; /* Chains fixSs. */
-COMMON fixS *data_fix_root, *data_fix_tail; /* Chains fixSs. */
-COMMON fixS *bss_fix_root, *bss_fix_tail; /* Chains fixSs. */
-#endif
-COMMON fixS **seg_fix_rootP, **seg_fix_tailP; /* -> one of above. */
-extern long string_byte_count;
-extern int section_alignment[];
+ /* Has this relocation already been applied? */
+ unsigned fx_done : 1;
-#if __STDC__ == 1
+ /* Suppress overflow complaints on large addends. This is used
+ in the PowerPC ELF config to allow large addends on the
+ BFD_RELOC_{LO16,HI16,HI16_S} relocations.
-bit_fixS *bit_fix_new (int size, int offset, long base_type, long base_adj, long min, long max, long add);
-void append (char **charPP, char *fromP, unsigned long length);
-void record_alignment (segT seg, int align);
-void write_object_file (void);
+ @@ Can this be determined from BFD? */
+ unsigned fx_no_overflow : 1;
-fixS *fix_new (fragS * frag,
- int where,
- int size,
- symbolS * add_symbol,
- symbolS * sub_symbol,
- long offset,
- int pcrel,
- int r_type);
+ /* The value is signed when checking for overflow. */
+ unsigned fx_signed : 1;
-#else /* not __STDC__ */
+ /* Some bits for the CPU specific code. */
+ unsigned fx_tcbit : 1;
+ unsigned fx_tcbit2 : 1;
-bit_fixS *bit_fix_new ();
-fixS *fix_new ();
-void append ();
-void record_alignment ();
-void write_object_file ();
+ /* Spare bits. */
+ unsigned fx_unused : 10;
-#endif /* not __STDC__ */
+ /* pc-relative offset adjust (only used by some CPU specific code) */
+ int fx_pcrel_adjust : 8;
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+ /* How many bytes are involved? */
+ unsigned fx_size : 8;
+
+ bfd_reloc_code_real_type fx_r_type;
+
+ /* Which frag does this fix apply to? */
+ fragS *fx_frag;
+
+ /* The location within the frag where the fixup occurs. */
+ unsigned long fx_where;
-/* end of write.h */
+ /* NULL or Symbol whose value we add in. */
+ symbolS *fx_addsy;
+
+ /* NULL or Symbol whose value we subtract. */
+ symbolS *fx_subsy;
+
+ /* Absolute number we add in. */
+ valueT fx_offset;
+
+ /* The value of dot when the fixup expression was parsed. */
+ addressT fx_dot_value;
+
+ /* The frag fx_dot_value is based on. */
+ fragS *fx_dot_frag;
+
+ /* This field is sort of misnamed. It appears to be a sort of random
+ scratch field, for use by the back ends. The main gas code doesn't
+ do anything but initialize it to zero. The use of it does need to
+ be coordinated between the cpu and format files, though. E.g., some
+ coff targets pass the `addend' field from the cpu file via this
+ field. I don't know why the `fx_offset' field above can't be used
+ for that; investigate later and document. KR */
+ valueT fx_addnumber;
+
+ /* The location of the instruction which created the reloc, used
+ in error messages. */
+ const char *fx_file;
+ unsigned fx_line;
+
+#ifdef USING_CGEN
+ struct {
+ /* CGEN_INSN entry for this instruction. */
+ const struct cgen_insn *insn;
+ /* Target specific data, usually reloc number. */
+ int opinfo;
+ /* Which ifield this fixup applies to. */
+ struct cgen_maybe_multi_ifield * field;
+ /* is this field is the MSB field in a set? */
+ int msb_field_p;
+ } fx_cgen;
+#endif
+
+#ifdef TC_FIX_TYPE
+ /* Location where a backend can attach additional data
+ needed to perform fixups. */
+ TC_FIX_TYPE tc_fix_data;
+#endif
+};
+
+typedef struct fix fixS;
+
+struct reloc_list
+{
+ struct reloc_list *next;
+ union
+ {
+ struct
+ {
+ symbolS *offset_sym;
+ reloc_howto_type *howto;
+ symbolS *sym;
+ bfd_vma addend;
+ } a;
+ struct
+ {
+ asection *sec;
+ asymbol *s;
+ arelent r;
+ } b;
+ } u;
+ const char *file;
+ unsigned int line;
+};
+
+extern int finalize_syms;
+extern symbolS *abs_section_sym;
+extern addressT dot_value;
+extern fragS *dot_frag;
+extern struct reloc_list* reloc_list;
+
+extern void append (char **, char *, unsigned long);
+extern void record_alignment (segT, unsigned);
+extern int get_recorded_alignment (segT);
+extern void write_object_file (void);
+extern long relax_frag (segT, fragS *, long);
+extern int relax_segment (struct frag *, segT, int);
+extern void number_to_chars_littleendian (char *, valueT, int);
+extern void number_to_chars_bigendian (char *, valueT, int);
+extern fixS *fix_new (fragS *, unsigned long, unsigned long, symbolS *,
+ offsetT, int, bfd_reloc_code_real_type);
+extern fixS *fix_at_start (fragS *, unsigned long, symbolS *,
+ offsetT, int, bfd_reloc_code_real_type);
+extern fixS *fix_new_exp (fragS *, unsigned long, unsigned long,
+ expressionS *, int, bfd_reloc_code_real_type);
+extern void write_print_statistics (FILE *);
+
+#endif /* __write_h__ */
projects / deliverable / binutils-gdb.git / blobdiff