/* write.h
-
- Copyright (C) 1987, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1987, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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. */
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+#ifndef __write_h__
+#define __write_h__
#ifndef TC_I960
#ifdef hpux
#endif
#endif /* TC_I960 */
+#ifndef BFD_ASSEMBLER
+
#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 */
+#endif
+
+#define S_LOCAL_NAME(s) (LOCAL_LABEL (S_GET_NAME (s)))
-#define S_LOCAL_NAME(s) (LOCAL_LABEL(S_GET_NAME(s)))
+#endif /* ! BFD_ASSEMBLER */
+
+/* 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. */
+#define FAKE_LABEL_NAME "L0\001"
#include "bit_fix.h"
*/
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;
+{
+ /* These small fields are grouped together for compactness of
+ this structure, and efficiency of access on some architectures. */
+
+ /* pc-relative offset adjust (only used by m68k) */
+ char fx_pcrel_adjust;
+
+ /* How many bytes are involved? */
+ unsigned char fx_size;
+
+ /* Is this a pc-relative relocation? */
+ unsigned fx_pcrel : 1;
+
+ /* Is this a relocation to a procedure linkage table entry? If so,
+ some of the reductions we try to apply are invalid. A better way
+ might be to represent PLT entries with different kinds of
+ symbols, and use normal relocations (with undefined symbols);
+ look into it for version 2.6. */
+ unsigned fx_plt : 1;
+
+ /* Is this value an immediate displacement? */
+ /* Only used on i960 and ns32k; merge it into TC_FIX_TYPE sometime. */
+ unsigned fx_im_disp : 2;
+
+ /* A bit for the CPU specific code.
+ This probably can be folded into tc_fix_data, below. */
+ unsigned fx_tcbit : 1;
+
+ /* Has this relocation already been applied? */
+ unsigned fx_done : 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.
+
+ @@ Can this be determined from BFD? */
+ unsigned fx_no_overflow : 1;
+
+ /* The value is signed when checking for overflow. */
+ unsigned fx_signed : 1;
+
+ /* Which frag does this fix apply to? */
+ fragS *fx_frag;
+
+ /* Where is the first byte to fix up? */
+ long fx_where;
+
+ /* 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;
+
+ /* Next fixS in linked list, or NULL. */
+ struct fix *fx_next;
+
+ /* If NULL, no bitfix's to do. */
+ /* Only i960-coff and ns32k use this, and i960-coff stores an
+ integer. This can probably be folded into tc_fix_data, below.
+ @@ Alpha also uses it, but only to disable certain relocation
+ processing. */
+ bit_fixS *fx_bit_fixP;
+
+#ifdef BFD_ASSEMBLER
+ bfd_reloc_code_real_type fx_r_type;
+#else
+#ifdef NEED_FX_R_TYPE
+ /* Hack for machines where the type of reloc can't be
+ worked out by looking at how big it is. */
+ int fx_r_type;
+#endif
#endif
- char fx_callj; /* TRUE if target is a 'callj' (used by i960) */
- long fx_addnumber;
- };
+
+ /* 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. */
+ 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;
+ } 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;
-COMMON char *next_object_file_charP;
+#ifndef BFD_ASSEMBLER
+extern char *next_object_file_charP;
#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. */
+extern struct frag *text_last_frag; /* Last frag in segment. */
+extern struct frag *data_last_frag; /* Last frag in segment. */
#endif
COMMON fixS **seg_fix_rootP, **seg_fix_tailP; /* -> one of above. */
+#endif
+
extern long string_byte_count;
extern int section_alignment[];
-#if __STDC__ == 1
-
-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);
-
-fixS *fix_new (fragS * frag,
- int where,
- int size,
- symbolS * add_symbol,
- symbolS * sub_symbol,
- long offset,
- int pcrel,
- int r_type);
-
-#else /* not __STDC__ */
-
-bit_fixS *bit_fix_new ();
-fixS *fix_new ();
-void append ();
-void record_alignment ();
-void write_object_file ();
-
-#endif /* not __STDC__ */
+extern bit_fixS *bit_fix_new
+ PARAMS ((int size, int offset, long base_type, long base_adj, long min,
+ long max, long add));
+extern void append PARAMS ((char **charPP, char *fromP, unsigned long length));
+extern void record_alignment PARAMS ((segT seg, int align));
+extern void subsegs_finish PARAMS ((void));
+extern void write_object_file PARAMS ((void));
+extern long relax_frag PARAMS ((fragS *, long));
+extern void relax_segment
+ PARAMS ((struct frag * seg_frag_root, segT seg_type));
+
+extern void number_to_chars_littleendian PARAMS ((char *, valueT, int));
+extern void number_to_chars_bigendian PARAMS ((char *, valueT, int));
+
+#ifdef BFD_ASSEMBLER
+extern fixS *fix_new
+ PARAMS ((fragS * frag, int where, int size, symbolS * add_symbol,
+ offsetT offset, int pcrel, bfd_reloc_code_real_type r_type));
+extern fixS *fix_new_exp
+ PARAMS ((fragS * frag, int where, int size, expressionS *exp, int pcrel,
+ bfd_reloc_code_real_type r_type));
+#else
+extern fixS *fix_new
+ PARAMS ((fragS * frag, int where, int size, symbolS * add_symbol,
+ offsetT offset, int pcrel, int r_type));
+extern fixS *fix_new_exp
+ PARAMS ((fragS * frag, int where, int size, expressionS *exp, int pcrel,
+ int r_type));
+#endif
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+extern void write_print_statistics PARAMS ((FILE *));
+#endif /* __write_h__ */
/* end of write.h */
projects / deliverable / binutils-gdb.git / blobdiff