Remove useless static variables.
(s_align): New static function. Do common portion of
s_align_bytes and s_align_ptwo.
(s_align_bytes, s_align_ptwo): Just call s_align.
* frags.c (frag_align): Add max parameter. Change all callers.
(frag_align_pattern): Likewise.
* frags.h (frag_align, frag_align_pattern): Update declarations.
* write.c (relax_segment): Limit alignment change to fr_subtype.
Fix some types to be addressT.
* config/obj-coff.c (size_section): Likewise.
* config/obj-ieee.c (size_section): Likewise.
* config/tc-d10v.h (md_do_align): Add max parameter.
* config/tc-i386.h (md_do_align): Likewise.
* config/tc-m88k.h (md_do_align): Likewise.
* config/tc-m88k.c (m88k_do_align): Likewise.
* config/tc-sh.h (md_do_align): Likewise.
* config/tc-sh.c (sh_do_align): Likewise.
* as.h: Improve comments on rs_align and rs_align_code.
* doc/as.texinfo: Document new alignment arguments.
* doc/internals.texi (Frags): Document use of fr_subtype field for
rs_align and rs_align_code.
+Fri Feb 14 17:24:48 1997 Ian Lance Taylor <ian@cygnus.com>
+
+ * read.c (do_align): Add max parameter. Change all callers.
+ Remove useless static variables.
+ (s_align): New static function. Do common portion of
+ s_align_bytes and s_align_ptwo.
+ (s_align_bytes, s_align_ptwo): Just call s_align.
+ * frags.c (frag_align): Add max parameter. Change all callers.
+ (frag_align_pattern): Likewise.
+ * frags.h (frag_align, frag_align_pattern): Update declarations.
+ * write.c (relax_segment): Limit alignment change to fr_subtype.
+ Fix some types to be addressT.
+ * config/obj-coff.c (size_section): Likewise.
+ * config/obj-ieee.c (size_section): Likewise.
+ * config/tc-d10v.h (md_do_align): Add max parameter.
+ * config/tc-i386.h (md_do_align): Likewise.
+ * config/tc-m88k.h (md_do_align): Likewise.
+ * config/tc-m88k.c (m88k_do_align): Likewise.
+ * config/tc-sh.h (md_do_align): Likewise.
+ * config/tc-sh.c (sh_do_align): Likewise.
+ * as.h: Improve comments on rs_align and rs_align_code.
+ * doc/as.texinfo: Document new alignment arguments.
+ * doc/internals.texi (Frags): Document use of fr_subtype field for
+ rs_align and rs_align_code.
+
+Fri Feb 14 15:56:06 1997 Gavin Koch <gavin@cygnus.com>
+
+ * config/tc-mips.c: Changed opcode parsing.
+
Thu Feb 13 20:02:16 1997 Fred Fish <fnf@cygnus.com>
* config/{tc-alpha.h, tc-arc.h, tc-d10v.h, tc-generic.h, tc-i960.h,
break;
case rs_align:
case rs_align_code:
- size += frag->fr_fix;
- size += relax_align (size, frag->fr_offset);
+ {
+ addressT off;
+
+ size += frag->fr_fix;
+ off = relax_align (size, frag->fr_offset);
+ if (frag->fr_subtype != 0 && off > frag->fr_subtype)
+ off = 0;
+ size += off;
+ }
break;
default:
BAD_CASE (frag->fr_type);
while (symbol_ptr->sy_value.X_op == O_symbol
&& (! S_IS_DEFINED (symbol_ptr)
|| S_IS_COMMON (symbol_ptr)))
- symbol_ptr = symbol_ptr->sy_value.X_add_symbol;
+ {
+ symbolS *n;
+
+ /* We must avoid looping, as that can occur
+ with a badly written program. */
+ n = symbol_ptr->sy_value.X_add_symbol;
+ if (n == symbol_ptr)
+ break;
+ symbol_ptr = n;
+ }
/* Turn the segment of the symbol into an offset. */
if (symbol_ptr)
#ifdef md_do_align
{
static char nop = NOP_OPCODE;
- md_do_align (SUB_SEGMENT_ALIGN (now_seg), &nop, 1, alignment_done);
+ md_do_align (SUB_SEGMENT_ALIGN (now_seg), &nop, 1, 0, alignment_done);
}
#endif
- frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE);
+ frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE, 0);
#ifdef md_do_align
alignment_done:
#endif
happened if these are expression symbols. */
if (add_symbolP != NULL && ! add_symbolP->sy_resolved)
resolve_symbol_value (add_symbolP);
+
+ if (add_symbolP != NULL)
+ {
+ /* If this fixup is against a symbol which has been equated
+ to another symbol, convert it to the other symbol. */
+ if (add_symbolP->sy_value.X_op == O_symbol
+ && (! S_IS_DEFINED (add_symbolP)
+ || S_IS_COMMON (add_symbolP)))
+ {
+ while (add_symbolP->sy_value.X_op == O_symbol
+ && (! S_IS_DEFINED (add_symbolP)
+ || S_IS_COMMON (add_symbolP)))
+ {
+ symbolS *n;
+
+ /* We must avoid looping, as that can occur with a
+ badly written program. */
+ n = add_symbolP->sy_value.X_add_symbol;
+ if (n == add_symbolP)
+ break;
+ add_number += add_symbolP->sy_value.X_add_number;
+ add_symbolP = n;
+ }
+ fixP->fx_addsy = add_symbolP;
+ fixP->fx_offset = add_number;
+ }
+ }
+
if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved)
resolve_symbol_value (sub_symbolP);
&& ((add_number & ~0xFF)
|| (fixP->fx_signed && (add_number & 0x80)))
&& ((add_number & ~0xFF) != (-1 & ~0xFF)
- || (fixP->fx_signed && (add_number & 0x80) == 0)))
+ || (add_number & 0x80) == 0))
|| (size == 2
&& ((add_number & ~0xFFFF)
|| (fixP->fx_signed && (add_number & 0x8000)))
&& ((add_number & ~0xFFFF) != (-1 & ~0xFFFF)
- || (fixP->fx_signed && (add_number & 0x8000) == 0))))
+ || (add_number & 0x8000) == 0)))
{
as_bad_where (fixP->fx_file, fixP->fx_line,
"Value of %ld too large for field of %d bytes at 0x%lx",
/* obj-format for ieee-695 records.
- Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 94, 95, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */
/*
size += frag->fr_offset * frag->fr_var;
break;
case rs_align:
- size += relax_align (size, frag->fr_offset);
+ case rs_align_code:
+ {
+ addressT off;
+
+ off = relax_align (size, frag->fr_offset);
+ if (frag->fr_subtype != 0 && off > frag->fr_subtype)
+ off = 0;
+ size += off;
+ }
}
frag = frag->fr_next;
}
#ifndef SUB_SEGMENT_ALIGN
#define SUB_SEGMENT_ALIGN(SEG) 2
#endif
- frag_align (SUB_SEGMENT_ALIGN (now_seg), 0);
+ frag_align (SUB_SEGMENT_ALIGN (now_seg), 0, 0);
frag_wane (frag_now);
frag_now->fr_fix = 0;
know (frag_now->fr_next == NULL);
/* tc-d10v.h -- Header file for tc-d10v.c.
- Copyright (C) 1996 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Written by Martin Hunt, Cygnus Support.
This file is part of GAS, the GNU Assembler.
#define TC_D10V
+#define TARGET_BYTES_BIG_ENDIAN 0
+
#ifndef BFD_ASSEMBLER
#error D10V support requires BFD_ASSEMBLER
#endif
int d10v_cleanup PARAMS ((void));
#define md_after_pass_hook() d10v_cleanup()
#define md_cleanup() d10v_cleanup()
-#define md_do_align(a,b,c,d) d10v_cleanup()
+#define md_do_align(a,b,c,d,e) d10v_cleanup()
#define TC_START_LABEL(ch, ptr) (ch == ':' && d10v_cleanup())
/* tc-i386.h -- Header file for tc-i386.c
- Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation.
+ Copyright (C) 1989, 92, 93, 94, 95, 96, 1997 Free Software Foundation.
This file is part of GAS, the GNU Assembler.
#ifndef TC_I386
#define TC_I386 1
+#define TARGET_BYTES_BIG_ENDIAN 0
+
#ifdef TE_LYNX
#define TARGET_FORMAT "coff-i386-lynx"
#endif
&& (FIX)->fx_r_type != BFD_RELOC_386_GOTPC)
#define TARGET_ARCH bfd_arch_i386
-#define TARGET_BYTES_BIG_ENDIAN 0
#ifdef OBJ_AOUT
#ifdef TE_NetBSD
#define COFF_MAGIC I386MAGIC
#define BFD_ARCH bfd_arch_i386
#define COFF_FLAGS F_AR32WR
-#define TC_COUNT_RELOC(x) ((x)->fx_addsy /* ||(x)->fx_subsy||(x)->fx_offset */)
+#define TC_COUNT_RELOC(x) ((x)->fx_addsy || (x)->fx_r_type==7)
+#define TC_FORCE_RELOCATION(x) ((x)->fx_r_type==7)
#define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype(fixP)
extern short tc_coff_fix2rtype ();
#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
extern int tc_coff_sizemachdep PARAMS ((fragS *frag));
#define SUB_SEGMENT_ALIGN(SEG) 2
-
+#define TC_RVA_RELOC 7
/* Need this for PIC relocations */
#define NEED_FX_R_TYPE
+
+#ifdef TE_386BSD
+/* The BSDI linker apparently rejects objects with a machine type of
+ M_386 (100). */
+#define AOUT_MACHTYPE 0
+#else
#define AOUT_MACHTYPE 100
+#endif
+
#undef REVERSE_SORT_RELOCS
#endif /* ! BFD_ASSEMBLER */
#define tc_coff_symbol_emit_hook(a) ; /* not used */
#ifndef OBJ_AOUT
+#ifndef TE_PE
/* Local labels starts with .L */
#define LOCAL_LABEL(name) (name[0] == '.' \
&& (name[1] == 'L' || name[1] == 'X' || name[1] == '.'))
#define FAKE_LABEL_NAME ".L0\001"
#endif
+#endif
#define LOCAL_LABELS_FB 1
#define tc_aout_pre_write_hook(x) {;} /* not used */
extern const struct relax_type md_relax_table[];
#define TC_GENERIC_RELAX_TABLE md_relax_table
+
+extern int flag_16bit_code;
+
+#define md_do_align(n, fill, len, max, around) \
+if ((n) && !need_pass_2 \
+ && (!(fill) || ((char)*(fill) == (char)0x90 && (len) == 1)) \
+ && now_seg != data_section && now_seg != bss_section) \
+ { \
+ char *p; \
+ p = frag_var (rs_align_code, 15, 1, (relax_substateT) max, \
+ (symbolS *) 0, (long) (n), (char *) 0); \
+ *p = 0x90; \
+ goto around; \
+ }
+
+extern void i386_align_code PARAMS ((fragS *, int));
+
+#define HANDLE_ALIGN(fragP) \
+if (fragP->fr_type == rs_align_code) \
+ i386_align_code (fragP, (fragP->fr_next->fr_address \
+ - fragP->fr_address \
+ - fragP->fr_fix));
+
+/* call md_apply_fix3 with segment instead of md_apply_fix */
+#define MD_APPLY_FIX3
+
+void i386_print_statistics PARAMS ((FILE *));
+#define tc_print_statistics i386_print_statistics
+
+#define md_number_to_chars number_to_chars_littleendian
+
+#ifdef SCO_ELF
+#define tc_init_after_args() sco_id ()
+extern void sco_id PARAMS ((void));
+#endif
+
/* end of tc-i386.h */
/* m88k.c -- Assembler for the Motorola 88000
Contributed by Devon Bowen of Buffalo University
and Torbjorn Granlund of the Swedish Institute of Computer Science.
- Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996
+ Copyright (C) 1989, 90, 91, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */
#include <ctype.h>
#include "as.h"
subseg_set (SEG_BSS, 1); /* switch to bss */
if (bss_align)
- frag_align (bss_align, 0);
+ frag_align (bss_align, 0, 0);
/* detach from old frag */
if (symbolP->sy_type == N_BSS && symbolP->sy_frag != NULL)
/* When we align the .init section, insert the correct NOP pattern. */
int
-m88k_do_align (n, fill, len)
+m88k_do_align (n, fill, max, len)
int n;
const char *fill;
int len;
+ int max;
{
if ((fill == NULL || (*fill == 0 && len == 1))
&& strcmp (obj_segment_name (now_seg), ".init") == 0)
{
static const unsigned char nop_pattern[] = { 0xf4, 0x00, 0x58, 0x00 };
- frag_align_pattern (n, nop_pattern, sizeof (nop_pattern));
+ frag_align_pattern (n, nop_pattern, sizeof (nop_pattern), max);
return 1;
}
return 0;
/* m88k.h -- Assembler for the Motorola 88000
Contributed by Devon Bowen of Buffalo University
and Torbjorn Granlund of the Swedish Institute of Computer Science.
- Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996
+ Copyright (C) 1989, 90, 91, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */
#define TC_M88K
/* We use a special alignment function to insert the correct nop
pattern in .init. */
-extern int m88k_do_align PARAMS ((int, const char *, int));
-#define md_do_align(n,fill,len,l) if (m88k_do_align(n,fill,len)) goto l
+extern int m88k_do_align PARAMS ((int, const char *, int, int));
+#define md_do_align(n,fill,len,max,l) if (m88k_do_align(n,fill,max,len)) goto l
#endif /* M88KCOFF */
frag, @code{fr_offset} is the logarithm (base 2) of the alignment in bytes.
(For example, if alignment on an 8-byte boundary were desired, @code{fr_offset}
would have a value of 3.) The variable characters indicate the fill pattern to
-be used. Target backends can use @code{rs_align_code} to handle certain types
-of alignment differently.
+be used. The @code{fr_subtype} field holds the maximum number of bytes to skip
+when doing this alignment. If more bytes are needed, the alignment is not
+done. An @code{fr_subtype} value of 0 means no maximum, which is the normal
+case. Target backends can use @code{rs_align_code} to handle certain types of
+alignment differently.
@item rs_broken_word
This indicates that ``broken word'' processing should be done (@pxref{Broken
If a symbol always has a certain value, you should normally enter it in the
symbol table, perhaps using @code{reg_section}.
+@item md_undefined_symbol
+@cindex md_undefined_symbol
+GAS will call this function when a symbol table lookup fails, before it
+creates a new symbol. Typically this would be used to supply symbols whose
+name or value changes dynamically, possibly in a context sensitive way.
+Predefined symbols with fixed values, such as register names or condition
+codes, are typically entered directly into the symbol table when @code{md_begin}
+is called.
+
@item md_operand
@cindex md_operand
GAS will call this function for any expression that can not be recognized.
projects / deliverable / binutils-gdb.git / commitdiff
