1 /* tc-tic54x.c -- Assembly code for the Texas Instruments TMS320C54X
2 Copyright (C) 1999-2016 Free Software Foundation, Inc.
3 Contributed by Timothy Wall (twall@cygnus.com)
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
22 /* Texas Instruments TMS320C54X machine specific gas.
23 Written by Timothy Wall (twall@alum.mit.edu).
25 Valuable things to do:
26 Pipeline conflict warnings
27 We encode/decode "ld #_label, dp" differently in relocatable files
28 This means we're not compatible with TI output containing those
29 expressions. We store the upper nine bits; TI stores the lower nine
30 bits. How they recover the original upper nine bits is beyond me.
32 Tests to add to expect testsuite:
33 '=' and '==' with .if, .elseif, and .break
35 Incompatibilities (mostly trivial):
37 We fill text section with zeroes instead of "nop"s
38 We don't convert '' or "" to a single instance
39 We don't convert '' to '\0'
40 We don't allow strings with .byte/.half/.short/.long
41 Probably details of the subsym stuff are different
42 TI sets labels to be data type 4 (T_INT); GAS uses T_NULL.
44 COFF1 limits section names to 8 characters.
45 Some of the default behavior changed from COFF1 to COFF2. */
49 #include "safe-ctype.h"
53 #include "struc-symbol.h"
54 #include "opcode/tic54x.h"
61 symbolS
*sym
; /* Symbol for this stag; value is offset. */
62 const char *name
; /* Shortcut to symbol name. */
63 bfd_vma size
; /* Size of struct/union. */
64 int current_bitfield_offset
; /* Temporary for tracking fields. */
66 struct stag_field
/* List of fields. */
69 bfd_vma offset
; /* Of start of this field. */
70 int bitfield_offset
; /* Of start of this field. */
71 struct stag
*stag
; /* If field is struct/union. */
72 struct stag_field
*next
;
74 /* For nesting; used only in stag construction. */
75 struct stag
*inner
; /* Enclosed .struct. */
76 struct stag
*outer
; /* Enclosing .struct. */
77 } *current_stag
= NULL
;
79 #define MAX_LINE 256 /* Lines longer than this are truncated by TI's asm. */
81 typedef struct _tic54x_insn
83 const insn_template
*tm
; /* Opcode template. */
85 char mnemonic
[MAX_LINE
]; /* Opcode name/mnemonic. */
86 char parmnemonic
[MAX_LINE
]; /* 2nd mnemonic of parallel insn. */
94 } operands
[MAX_OPERANDS
];
97 struct opstruct paroperands
[MAX_OPERANDS
];
101 int words
; /* Size of insn in 16-bit words. */
102 int using_default_dst
; /* Do we need to explicitly set an
103 omitted OP_DST operand? */
106 unsigned short word
; /* Final encoded opcode data. */
108 int r_nchars
; /* Relocation size. */
109 bfd_reloc_code_real_type r_type
; /* Relocation type. */
110 expressionS addr_expr
; /* Storage for unresolved expressions. */
116 VNONE
= 0, V541
= 1, V542
= 2, V543
= 3, V545
= 5, V548
= 8, V549
= 9,
117 V545LP
= 15, V546LP
= 16
122 c_mode
, /* 16-bit addresses. */
123 far_mode
/* >16-bit addresses. */
126 static segT stag_saved_seg
;
127 static subsegT stag_saved_subseg
;
129 const char comment_chars
[] = ";";
130 const char line_comment_chars
[] = ";*#"; /* At column zero only. */
131 const char line_separator_chars
[] = ""; /* Not permitted. */
133 int emitting_long
= 0;
135 /* Characters which indicate that this is a floating point constant. */
136 const char FLT_CHARS
[] = "fF";
138 /* Characters that can be used to separate mantissa from exp in FP
140 const char EXP_CHARS
[] = "eE";
142 const char *md_shortopts
= "";
144 #define OPTION_ADDRESS_MODE (OPTION_MD_BASE)
145 #define OPTION_CPU_VERSION (OPTION_ADDRESS_MODE + 1)
146 #define OPTION_COFF_VERSION (OPTION_CPU_VERSION + 1)
147 #define OPTION_STDERR_TO_FILE (OPTION_COFF_VERSION + 1)
149 struct option md_longopts
[] =
151 { "mfar-mode", no_argument
, NULL
, OPTION_ADDRESS_MODE
},
152 { "mf", no_argument
, NULL
, OPTION_ADDRESS_MODE
},
153 { "mcpu", required_argument
, NULL
, OPTION_CPU_VERSION
},
154 { "merrors-to-file", required_argument
, NULL
, OPTION_STDERR_TO_FILE
},
155 { "me", required_argument
, NULL
, OPTION_STDERR_TO_FILE
},
156 { NULL
, no_argument
, NULL
, 0},
159 size_t md_longopts_size
= sizeof (md_longopts
);
161 static int assembly_begun
= 0;
162 /* Addressing mode is not entirely implemented; the latest rev of the Other
163 assembler doesn't seem to make any distinction whatsoever; all relocations
164 are stored as extended relocatiosn. Older versions used REL16 vs RELEXT16,
165 but now it seems all relocations are RELEXT16. We use all RELEXT16.
167 The cpu version is kind of a waste of time as well. There is one
168 instruction (RND) for LP devices only, and several for devices with
169 extended addressing only. We include it for compatibility. */
170 static enum address_mode amode
= c_mode
;
171 static enum cpu_version cpu
= VNONE
;
173 /* Include string substitutions in listing? */
174 static int listing_sslist
= 0;
176 /* Did we do subsym substitutions on the line? */
177 static int substitution_line
= 0;
179 /* Last label seen. */
180 static symbolS
*last_label_seen
= NULL
;
182 /* This ensures that all new labels are unique. */
183 static int local_label_id
;
185 static struct hash_control
*subsym_recurse_hash
; /* Prevent infinite recurse. */
186 static struct hash_control
*math_hash
; /* Built-in math functions. */
187 /* Allow maximum levels of macro nesting; level 0 is the main substitution
188 symbol table. The other assembler only does 32 levels, so there! */
189 static struct hash_control
*subsym_hash
[100];
191 /* Keep track of local labels so we can substitute them before GAS sees them
192 since macros use their own 'namespace' for local labels, use a separate hash
194 We do our own local label handling 'cuz it's subtly different from the
197 We use our own macro nesting counter, since GAS overloads it when expanding
198 other things (like conditionals and repeat loops). */
199 static int macro_level
= 0;
200 static struct hash_control
*local_label_hash
[100];
201 /* Keep track of struct/union tags. */
202 static struct hash_control
*stag_hash
;
203 static struct hash_control
*op_hash
;
204 static struct hash_control
*parop_hash
;
205 static struct hash_control
*reg_hash
;
206 static struct hash_control
*mmreg_hash
;
207 static struct hash_control
*cc_hash
;
208 static struct hash_control
*cc2_hash
;
209 static struct hash_control
*cc3_hash
;
210 static struct hash_control
*sbit_hash
;
211 static struct hash_control
*misc_symbol_hash
;
213 /* Only word (et al.), align, or conditionals are allowed within
215 #define ILLEGAL_WITHIN_STRUCT() \
217 if (current_stag != NULL) \
219 as_bad (_("pseudo-op illegal within .struct/.union")); \
225 static void subsym_create_or_replace (char *, char *);
226 static char *subsym_lookup (char *, int);
227 static char *subsym_substitute (char *, int);
231 md_show_usage (FILE *stream
)
233 fprintf (stream
, _("C54x-specific command line options:\n"));
234 fprintf (stream
, _("-mfar-mode | -mf Use extended addressing\n"));
235 fprintf (stream
, _("-mcpu=<CPU version> Specify the CPU version\n"));
236 fprintf (stream
, _("-merrors-to-file <filename>\n"));
237 fprintf (stream
, _("-me <filename> Redirect errors to a file\n"));
240 /* Output a single character (upper octect is zero). */
243 tic54x_emit_char (char c
)
247 expn
.X_op
= O_constant
;
248 expn
.X_add_number
= c
;
249 emit_expr (&expn
, 2);
252 /* Walk backwards in the frag chain. */
255 frag_prev (fragS
*frag
, segT seg
)
257 segment_info_type
*seginfo
= seg_info (seg
);
260 for (fragp
= seginfo
->frchainP
->frch_root
; fragp
; fragp
= fragp
->fr_next
)
261 if (fragp
->fr_next
== frag
)
268 bit_offset_frag (fragS
*frag
, segT seg
)
272 if (frag
->fr_fix
== 0
273 && frag
->fr_opcode
== NULL
274 && frag
->tc_frag_data
== 0)
275 frag
= frag_prev (frag
, seg
);
282 /* Return the number of bits allocated in the most recent word, or zero if
283 none. .field/.space/.bes may leave words partially allocated. */
286 frag_bit_offset (fragS
*frag
, segT seg
)
288 frag
= bit_offset_frag (frag
, seg
);
291 return frag
->fr_opcode
!= NULL
? -1 : frag
->tc_frag_data
;
296 /* Read an expression from a C string; returns a pointer past the end of the
300 parse_expression (char *str
, expressionS
*expn
)
305 tmp
= input_line_pointer
; /* Save line pointer. */
306 input_line_pointer
= str
;
308 s
= input_line_pointer
;
309 input_line_pointer
= tmp
; /* Restore line pointer. */
310 return s
; /* Return pointer to where parsing stopped. */
313 /* .asg "character-string"|character-string, symbol
315 .eval is the only pseudo-op allowed to perform arithmetic on substitution
316 symbols. all other use of symbols defined with .asg are currently
320 tic54x_asg (int x ATTRIBUTE_UNUSED
)
325 int quoted
= *input_line_pointer
== '"';
327 ILLEGAL_WITHIN_STRUCT ();
332 str
= demand_copy_C_string (&len
);
333 c
= *input_line_pointer
;
337 str
= input_line_pointer
;
338 while ((c
= *input_line_pointer
) != ',')
340 if (is_end_of_line
[(int) *input_line_pointer
])
342 ++input_line_pointer
;
344 *input_line_pointer
= 0;
348 as_bad (_("Comma and symbol expected for '.asg STRING, SYMBOL'"));
349 ignore_rest_of_line ();
353 ++input_line_pointer
;
354 c
= get_symbol_name (&name
); /* Get terminator. */
355 if (!ISALPHA (*name
))
357 as_bad (_("symbols assigned with .asg must begin with a letter"));
358 ignore_rest_of_line ();
363 name
= xstrdup (name
);
364 subsym_create_or_replace (name
, str
);
365 (void) restore_line_pointer (c
);
366 demand_empty_rest_of_line ();
369 /* .eval expression, symbol
370 There's something screwy about this. The other assembler sometimes does and
371 sometimes doesn't substitute symbols defined with .eval.
372 We'll put the symbols into the subsym table as well as the normal symbol
373 table, since that's what works best. */
376 tic54x_eval (int x ATTRIBUTE_UNUSED
)
382 char valuestr
[32], *tmp
;
385 ILLEGAL_WITHIN_STRUCT ();
389 quoted
= *input_line_pointer
== '"';
391 ++input_line_pointer
;
392 value
= get_absolute_expression ();
395 if (*input_line_pointer
!= '"')
397 as_bad (_("Unterminated string after absolute expression"));
398 ignore_rest_of_line ();
401 ++input_line_pointer
;
403 if (*input_line_pointer
++ != ',')
405 as_bad (_("Comma and symbol expected for '.eval EXPR, SYMBOL'"));
406 ignore_rest_of_line ();
409 c
= get_symbol_name (&name
); /* Get terminator. */
410 name
= xstrdup (name
);
411 (void) restore_line_pointer (c
);
413 if (!ISALPHA (*name
))
415 as_bad (_("symbols assigned with .eval must begin with a letter"));
416 ignore_rest_of_line ();
419 symbolP
= symbol_new (name
, absolute_section
,
420 (valueT
) value
, &zero_address_frag
);
421 SF_SET_LOCAL (symbolP
);
422 symbol_table_insert (symbolP
);
424 /* The "other" assembler sometimes doesn't put .eval's in the subsym table
425 But since there's not written rule as to when, don't even bother trying
426 to match their behavior. */
427 sprintf (valuestr
, "%d", value
);
428 tmp
= xstrdup (valuestr
);
429 subsym_create_or_replace (name
, tmp
);
431 demand_empty_rest_of_line ();
434 /* .bss symbol, size [, [blocking flag] [, alignment flag]
436 alignment is to a longword boundary; blocking is to 128-word boundary.
438 1) if there is a hole in memory, this directive should attempt to fill it
439 (not yet implemented).
441 2) if the blocking flag is not set, allocate at the current SPC
442 otherwise, check to see if the current SPC plus the space to be
443 allocated crosses the page boundary (128 words).
444 if there's not enough space, create a hole and align with the next page
446 (not yet implemented). */
449 tic54x_bss (int x ATTRIBUTE_UNUSED
)
456 subsegT current_subseg
;
461 ILLEGAL_WITHIN_STRUCT ();
463 current_seg
= now_seg
; /* Save current seg. */
464 current_subseg
= now_subseg
; /* Save current subseg. */
466 c
= get_symbol_name (&name
); /* Get terminator. */
468 c
= * ++ input_line_pointer
;
471 as_bad (_(".bss size argument missing\n"));
472 ignore_rest_of_line ();
476 ++input_line_pointer
;
477 words
= get_absolute_expression ();
480 as_bad (_(".bss size %d < 0!"), words
);
481 ignore_rest_of_line ();
485 if (*input_line_pointer
== ',')
487 /* The blocking flag may be missing. */
488 ++input_line_pointer
;
489 if (*input_line_pointer
!= ',')
490 block
= get_absolute_expression ();
494 if (*input_line_pointer
== ',')
496 ++input_line_pointer
;
497 align
= get_absolute_expression ();
505 subseg_set (bss_section
, 0);
506 symbolP
= symbol_find_or_make (name
);
508 if (S_GET_SEGMENT (symbolP
) == bss_section
)
509 symbolP
->sy_frag
->fr_symbol
= (symbolS
*) NULL
;
511 symbol_set_frag (symbolP
, frag_now
);
512 p
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, symbolP
,
513 (offsetT
) (words
* OCTETS_PER_BYTE
), (char *) 0);
514 *p
= 0; /* Fill char. */
516 S_SET_SEGMENT (symbolP
, bss_section
);
518 /* The symbol may already have been created with a preceding
519 ".globl" directive -- be careful not to step on storage class
520 in that case. Otherwise, set it to static. */
521 if (S_GET_STORAGE_CLASS (symbolP
) != C_EXT
)
522 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
526 /* s_align eats end of line; restore it */
528 --input_line_pointer
;
532 bss_section
->flags
|= SEC_TIC54X_BLOCK
;
534 subseg_set (current_seg
, current_subseg
); /* Restore current seg. */
535 demand_empty_rest_of_line ();
539 stag_add_field_symbols (struct stag
*stag
,
543 const char *root_stag_name
)
546 struct stag_field
*field
= stag
->field
;
548 /* Construct a symbol for every field contained within this structure
549 including fields within structure fields. */
550 prefix
= concat (path
, *path
? "." : "", NULL
);
552 while (field
!= NULL
)
554 char *name
= concat (prefix
, field
->name
, NULL
);
559 sym
= symbol_new (name
, absolute_section
,
560 (field
->stag
? field
->offset
:
561 (valueT
) (base_offset
+ field
->offset
)),
564 symbol_table_insert (sym
);
570 replacement
= concat (S_GET_NAME (rootsym
), "+", root_stag_name
,
571 name
+ strlen (S_GET_NAME (rootsym
)), NULL
);
572 hash_insert (subsym_hash
[0], name
, replacement
);
575 /* Recurse if the field is a structure.
576 Note the field offset is relative to the outermost struct. */
577 if (field
->stag
!= NULL
)
578 stag_add_field_symbols (field
->stag
, name
,
580 rootsym
, root_stag_name
);
587 /* Keep track of stag fields so that when structures are nested we can add the
588 complete dereferencing symbols to the symbol table. */
591 stag_add_field (struct stag
*parent
,
596 struct stag_field
*sfield
= XCNEW (struct stag_field
);
598 sfield
->name
= xstrdup (name
);
599 sfield
->offset
= offset
;
600 sfield
->bitfield_offset
= parent
->current_bitfield_offset
;
602 if (parent
->field
== NULL
)
603 parent
->field
= sfield
;
606 struct stag_field
*sf
= parent
->field
;
607 while (sf
->next
!= NULL
)
611 /* Only create a symbol for this field if the parent has no name. */
612 if (!strncmp (".fake", parent
->name
, 5))
614 symbolS
*sym
= symbol_new (name
, absolute_section
,
615 (valueT
) offset
, &zero_address_frag
);
617 symbol_table_insert (sym
);
621 /* [STAG] .struct [OFFSET]
622 Start defining structure offsets (symbols in absolute section). */
625 tic54x_struct (int arg
)
627 int start_offset
= 0;
632 /* Starting a new struct, switch to absolute section. */
633 stag_saved_seg
= now_seg
;
634 stag_saved_subseg
= now_subseg
;
635 subseg_set (absolute_section
, 0);
637 /* Align the current pointer. */
638 else if (current_stag
->current_bitfield_offset
!= 0)
640 ++abs_section_offset
;
641 current_stag
->current_bitfield_offset
= 0;
644 /* Offset expression is only meaningful for global .structs. */
647 /* Offset is ignored in inner structs. */
649 if (!is_end_of_line
[(int) *input_line_pointer
])
650 start_offset
= get_absolute_expression ();
657 /* Nesting, link to outer one. */
658 current_stag
->inner
= XCNEW (struct stag
);
659 current_stag
->inner
->outer
= current_stag
;
660 current_stag
= current_stag
->inner
;
662 as_warn (_("Offset on nested structures is ignored"));
663 start_offset
= abs_section_offset
;
667 current_stag
= XCNEW (struct stag
);
668 abs_section_offset
= start_offset
;
670 current_stag
->is_union
= is_union
;
672 if (line_label
== NULL
)
674 static int struct_count
= 0;
675 char fake
[] = ".fake_stagNNNNNNN";
676 sprintf (fake
, ".fake_stag%d", struct_count
++);
677 current_stag
->sym
= symbol_new (fake
, absolute_section
,
678 (valueT
) abs_section_offset
,
683 char * label
= xstrdup (S_GET_NAME (line_label
));
684 current_stag
->sym
= symbol_new (label
,
686 (valueT
) abs_section_offset
,
690 current_stag
->name
= S_GET_NAME (current_stag
->sym
);
691 SF_SET_LOCAL (current_stag
->sym
);
692 /* Nested .structs don't go into the symbol table. */
693 if (current_stag
->outer
== NULL
)
694 symbol_table_insert (current_stag
->sym
);
699 /* [LABEL] .endstruct
700 finish defining structure offsets; optional LABEL's value will be the size
704 tic54x_endstruct (int is_union
)
708 !strncmp (current_stag
->name
, ".fake", 5) ? "" : current_stag
->name
;
710 if (!current_stag
|| current_stag
->is_union
!= is_union
)
712 as_bad (_(".end%s without preceding .%s"),
713 is_union
? "union" : "struct",
714 is_union
? "union" : "struct");
715 ignore_rest_of_line ();
719 /* Align end of structures. */
720 if (current_stag
->current_bitfield_offset
)
722 ++abs_section_offset
;
723 current_stag
->current_bitfield_offset
= 0;
726 if (current_stag
->is_union
)
727 size
= current_stag
->size
;
729 size
= abs_section_offset
- S_GET_VALUE (current_stag
->sym
);
730 if (line_label
!= NULL
)
732 S_SET_VALUE (line_label
, size
);
733 symbol_table_insert (line_label
);
737 /* Union size has already been calculated. */
738 if (!current_stag
->is_union
)
739 current_stag
->size
= size
;
740 /* Nested .structs don't get put in the stag table. */
741 if (current_stag
->outer
== NULL
)
743 hash_insert (stag_hash
, current_stag
->name
, current_stag
);
744 stag_add_field_symbols (current_stag
, path
,
745 S_GET_VALUE (current_stag
->sym
),
748 current_stag
= current_stag
->outer
;
750 /* If this is a nested .struct/.union, add it as a field to the enclosing
751 one. otherwise, restore the section we were in. */
752 if (current_stag
!= NULL
)
754 stag_add_field (current_stag
, current_stag
->inner
->name
,
755 S_GET_VALUE (current_stag
->inner
->sym
),
756 current_stag
->inner
);
759 subseg_set (stag_saved_seg
, stag_saved_subseg
);
763 Reference a structure within a structure, as a sized field with an optional
765 If used outside of a .struct/.endstruct, overlays the given structure
766 format on the existing allocated space. */
769 tic54x_tag (int ignore ATTRIBUTE_UNUSED
)
772 int c
= get_symbol_name (&name
);
773 struct stag
*stag
= (struct stag
*) hash_find (stag_hash
, name
);
778 as_bad (_("Unrecognized struct/union tag '%s'"), name
);
780 as_bad (_(".tag requires a structure tag"));
781 ignore_rest_of_line ();
784 if (line_label
== NULL
)
786 as_bad (_("Label required for .tag"));
787 ignore_rest_of_line ();
794 label
= xstrdup (S_GET_NAME (line_label
));
795 if (current_stag
!= NULL
)
796 stag_add_field (current_stag
, label
,
797 abs_section_offset
- S_GET_VALUE (current_stag
->sym
),
801 symbolS
*sym
= symbol_find (label
);
805 as_bad (_(".tag target '%s' undefined"), label
);
806 ignore_rest_of_line ();
810 stag_add_field_symbols (stag
, S_GET_NAME (sym
),
811 S_GET_VALUE (stag
->sym
), sym
, stag
->name
);
816 /* Bump by the struct size, but only if we're within a .struct section. */
817 if (current_stag
!= NULL
&& !current_stag
->is_union
)
818 abs_section_offset
+= stag
->size
;
820 (void) restore_line_pointer (c
);
821 demand_empty_rest_of_line ();
825 /* Handle all .byte, .char, .double, .field, .float, .half, .int, .long,
826 .short, .string, .ubyte, .uchar, .uhalf, .uint, .ulong, .ushort, .uword,
830 tic54x_struct_field (int type
)
834 int new_bitfield_offset
= 0;
835 int field_align
= current_stag
->current_bitfield_offset
!= 0;
836 int longword_align
= 0;
839 if (!is_end_of_line
[(int) *input_line_pointer
])
840 count
= get_absolute_expression ();
856 case '*': /* String. */
865 case '.': /* Bitfield. */
867 if (count
< 1 || count
> 32)
869 as_bad (_(".field count '%d' out of range (1 <= X <= 32)"), count
);
870 ignore_rest_of_line ();
873 if (current_stag
->current_bitfield_offset
+ count
> 16)
875 /* Set the appropriate size and new field offset. */
885 new_bitfield_offset
= count
- 16;
888 new_bitfield_offset
= count
;
893 new_bitfield_offset
= current_stag
->current_bitfield_offset
+ count
;
897 as_bad (_("Unrecognized field type '%c'"), type
);
898 ignore_rest_of_line ();
904 /* Align to the actual starting position of the field. */
905 current_stag
->current_bitfield_offset
= 0;
906 ++abs_section_offset
;
908 /* Align to longword boundary. */
909 if (longword_align
&& (abs_section_offset
& 0x1))
910 ++abs_section_offset
;
912 if (line_label
== NULL
)
914 static int fieldno
= 0;
915 char fake
[] = ".fake_fieldNNNNN";
917 sprintf (fake
, ".fake_field%d", fieldno
++);
918 stag_add_field (current_stag
, fake
,
919 abs_section_offset
- S_GET_VALUE (current_stag
->sym
),
926 label
= xstrdup (S_GET_NAME (line_label
));
927 stag_add_field (current_stag
, label
,
928 abs_section_offset
- S_GET_VALUE (current_stag
->sym
),
933 if (current_stag
->is_union
)
935 /* Note we treat the element as if it were an array of COUNT. */
936 if (current_stag
->size
< (unsigned) size
* count
)
937 current_stag
->size
= size
* count
;
941 abs_section_offset
+= (unsigned) size
* count
;
942 current_stag
->current_bitfield_offset
= new_bitfield_offset
;
947 /* Handle .byte, .word. .int, .long and all variants. */
950 tic54x_cons (int type
)
955 /* If we're within a .struct construct, don't actually allocate space. */
956 if (current_stag
!= NULL
)
958 tic54x_struct_field (type
);
962 #ifdef md_flush_pending_output
963 md_flush_pending_output ();
966 generate_lineno_debug ();
968 /* Align long words to long word boundaries (4 octets). */
969 if (type
== 'l' || type
== 'L')
971 frag_align (2, 0, 2);
972 /* If there's a label, assign it to the first allocated word. */
973 if (line_label
!= NULL
)
975 symbol_set_frag (line_label
, frag_now
);
976 S_SET_VALUE (line_label
, frag_now_fix ());
1000 if (*input_line_pointer
== '"')
1002 input_line_pointer
++;
1003 while (is_a_char (c
= next_char_of_string ()))
1004 tic54x_emit_char (c
);
1005 know (input_line_pointer
[-1] == '\"');
1011 input_line_pointer
= parse_expression (input_line_pointer
, &expn
);
1012 if (expn
.X_op
== O_constant
)
1014 offsetT value
= expn
.X_add_number
;
1015 /* Truncate overflows. */
1019 if ((value
> 0 && value
> 0xFF)
1020 || (value
< 0 && value
< - 0x100))
1021 as_warn (_("Overflow in expression, truncated to 8 bits"));
1024 if ((value
> 0 && value
> 0xFFFF)
1025 || (value
< 0 && value
< - 0x10000))
1026 as_warn (_("Overflow in expression, truncated to 16 bits"));
1030 if (expn
.X_op
!= O_constant
&& octets
< 2)
1032 /* Disallow .byte with a non constant expression that will
1033 require relocation. */
1034 as_bad (_("Relocatable values require at least WORD storage"));
1035 ignore_rest_of_line ();
1039 if (expn
.X_op
!= O_constant
1043 /* FIXME -- at one point TI tools used to output REL16
1044 relocations, but I don't think the latest tools do at all
1045 The current tools output extended relocations regardless of
1046 the addressing mode (I actually think that ".c_mode" is
1047 totally ignored in the latest tools). */
1050 emit_expr (&expn
, 4);
1056 emitting_long
= octets
== 4;
1057 emit_expr (&expn
, (octets
== 1) ? 2 : octets
);
1062 while (*input_line_pointer
++ == ',');
1064 input_line_pointer
--; /* Put terminator back into stream. */
1065 demand_empty_rest_of_line ();
1068 /* .global <symbol>[,...,<symbolN>]
1069 .def <symbol>[,...,<symbolN>]
1070 .ref <symbol>[,...,<symbolN>]
1072 These all identify global symbols.
1074 .def means the symbol is defined in the current module and can be accessed
1075 by other files. The symbol should be placed in the symbol table.
1077 .ref means the symbol is used in the current module but defined in another
1078 module. The linker is to resolve this symbol's definition at link time.
1080 .global should act as a .ref or .def, as needed.
1082 global, def and ref all have symbol storage classes of C_EXT.
1084 I can't identify any difference in how the "other" c54x assembler treats
1085 these, so we ignore the type here. */
1088 tic54x_global (int type
)
1095 as_warn (_("Use of .def/.ref is deprecated. Use .global instead"));
1097 ILLEGAL_WITHIN_STRUCT ();
1101 c
= get_symbol_name (&name
);
1102 symbolP
= symbol_find_or_make (name
);
1103 c
= restore_line_pointer (c
);
1105 S_SET_STORAGE_CLASS (symbolP
, C_EXT
);
1108 input_line_pointer
++;
1109 if (is_end_of_line
[(int) *input_line_pointer
])
1110 c
= *input_line_pointer
;
1115 demand_empty_rest_of_line ();
1118 /* Remove the symbol from the local label hash lookup. */
1121 tic54x_remove_local_label (const char *key
, void *value ATTRIBUTE_UNUSED
)
1123 void *elem
= hash_delete (local_label_hash
[macro_level
], key
, FALSE
);
1127 /* Reset all local labels. */
1130 tic54x_clear_local_labels (int ignored ATTRIBUTE_UNUSED
)
1132 hash_traverse (local_label_hash
[macro_level
], tic54x_remove_local_label
);
1137 .sect "section name"
1140 make sure local labels get cleared when changing sections
1142 ARG is 't' for text, 'd' for data, or '*' for a named section
1144 For compatibility, '*' sections are SEC_CODE if instructions are
1145 encountered, or SEC_DATA if not.
1149 tic54x_sect (int arg
)
1151 ILLEGAL_WITHIN_STRUCT ();
1153 /* Local labels are cleared when changing sections. */
1154 tic54x_clear_local_labels (0);
1158 else if (arg
== 'd')
1165 /* If there are quotes, remove them. */
1166 if (*input_line_pointer
== '"')
1168 name
= demand_copy_C_string (&len
);
1169 demand_empty_rest_of_line ();
1170 name
= strcpy (xmalloc (len
+ 10), name
);
1176 c
= get_symbol_name (&name
);
1178 name
= strcpy (xmalloc (len
+ 10), name
);
1179 (void) restore_line_pointer (c
);
1180 demand_empty_rest_of_line ();
1183 /* Make sure all named initialized sections flagged properly. If we
1184 encounter instructions, we'll flag it with SEC_CODE as well. */
1185 strcat (name
, ",\"w\"\n");
1186 input_scrub_insert_line (name
);
1187 obj_coff_section (0);
1189 /* If there was a line label, make sure that it gets assigned the proper
1190 section. This is for compatibility, even though the actual behavior
1191 is not explicitly defined. For consistency, we make .sect behave
1192 like .usect, since that is probably what people expect. */
1193 if (line_label
!= NULL
)
1195 S_SET_SEGMENT (line_label
, now_seg
);
1196 symbol_set_frag (line_label
, frag_now
);
1197 S_SET_VALUE (line_label
, frag_now_fix ());
1198 if (S_GET_STORAGE_CLASS (line_label
) != C_EXT
)
1199 S_SET_STORAGE_CLASS (line_label
, C_LABEL
);
1204 /* [symbol] .space space_in_bits
1205 [symbol] .bes space_in_bits
1206 BES puts the symbol at the *last* word allocated
1208 cribbed from s_space. */
1211 tic54x_space (int arg
)
1217 int bits_per_byte
= (OCTETS_PER_BYTE
* 8);
1219 symbolS
*label
= line_label
;
1222 ILLEGAL_WITHIN_STRUCT ();
1224 #ifdef md_flush_pending_output
1225 md_flush_pending_output ();
1228 /* Read the bit count. */
1231 /* Some expressions are unresolvable until later in the assembly pass;
1232 postpone until relaxation/fixup. we also have to postpone if a previous
1233 partial allocation has not been completed yet. */
1234 if (expn
.X_op
!= O_constant
|| frag_bit_offset (frag_now
, now_seg
) == -1)
1236 struct bit_info
*bi
= XNEW (struct bit_info
);
1241 p
= frag_var (rs_machine_dependent
,
1242 65536 * 2, 1, (relax_substateT
) 0,
1243 make_expr_symbol (&expn
), (offsetT
) 0,
1251 /* Reduce the required size by any bit offsets currently left over
1252 from a previous .space/.bes/.field directive. */
1253 bit_offset
= frag_now
->tc_frag_data
;
1254 if (bit_offset
!= 0 && bit_offset
< 16)
1256 int spare_bits
= bits_per_byte
- bit_offset
;
1258 if (spare_bits
>= expn
.X_add_number
)
1260 /* Don't have to do anything; sufficient bits have already been
1261 allocated; just point the label to the right place. */
1264 symbol_set_frag (label
, frag_now
);
1265 S_SET_VALUE (label
, frag_now_fix () - 1);
1268 frag_now
->tc_frag_data
+= expn
.X_add_number
;
1271 expn
.X_add_number
-= spare_bits
;
1272 /* Set the label to point to the first word allocated, which in this
1273 case is the previous word, which was only partially filled. */
1274 if (!bes
&& label
!= NULL
)
1276 symbol_set_frag (label
, frag_now
);
1277 S_SET_VALUE (label
, frag_now_fix () - 1);
1281 /* Convert bits to bytes/words and octets, rounding up. */
1282 words
= ((expn
.X_add_number
+ bits_per_byte
- 1) / bits_per_byte
);
1283 /* How many do we have left over? */
1284 bit_offset
= expn
.X_add_number
% bits_per_byte
;
1285 octets
= words
* OCTETS_PER_BYTE
;
1288 as_warn (_(".space/.bes repeat count is negative, ignored"));
1291 else if (octets
== 0)
1293 as_warn (_(".space/.bes repeat count is zero, ignored"));
1297 /* If we are in the absolute section, just bump the offset. */
1298 if (now_seg
== absolute_section
)
1300 abs_section_offset
+= words
;
1301 if (bes
&& label
!= NULL
)
1302 S_SET_VALUE (label
, abs_section_offset
- 1);
1303 frag_now
->tc_frag_data
= bit_offset
;
1308 p
= frag_var (rs_fill
, 1, 1,
1309 (relax_substateT
) 0, (symbolS
*) 0,
1310 (offsetT
) octets
, (char *) 0);
1312 /* Make note of how many bits of this word we've allocated so far. */
1313 frag_now
->tc_frag_data
= bit_offset
;
1315 /* .bes puts label at *last* word allocated. */
1316 if (bes
&& label
!= NULL
)
1318 symbol_set_frag (label
, frag_now
);
1319 S_SET_VALUE (label
, frag_now_fix () - 1);
1327 demand_empty_rest_of_line ();
1330 /* [symbol] .usect "section-name", size-in-words
1331 [, [blocking-flag] [, alignment-flag]]
1333 Uninitialized section.
1334 Non-zero blocking means that if the section would cross a page (128-word)
1335 boundary, it will be page-aligned.
1336 Non-zero alignment aligns on a longword boundary.
1338 Has no effect on the current section. */
1341 tic54x_usect (int x ATTRIBUTE_UNUSED
)
1348 int size
, blocking_flag
, alignment_flag
;
1350 subsegT current_subseg
;
1353 ILLEGAL_WITHIN_STRUCT ();
1355 current_seg
= now_seg
; /* Save current seg. */
1356 current_subseg
= now_subseg
; /* Save current subseg. */
1358 c
= get_symbol_name (§ion_name
); /* Get terminator. */
1359 name
= xstrdup (section_name
);
1360 c
= restore_line_pointer (c
);
1363 ++input_line_pointer
;
1366 as_bad (_("Missing size argument"));
1367 ignore_rest_of_line ();
1371 size
= get_absolute_expression ();
1373 /* Read a possibly present third argument (blocking flag). */
1374 if (*input_line_pointer
== ',')
1376 ++input_line_pointer
;
1377 if (*input_line_pointer
!= ',')
1378 blocking_flag
= get_absolute_expression ();
1382 /* Read a possibly present fourth argument (alignment flag). */
1383 if (*input_line_pointer
== ',')
1385 ++input_line_pointer
;
1386 alignment_flag
= get_absolute_expression ();
1392 blocking_flag
= alignment_flag
= 0;
1394 seg
= subseg_new (name
, 0);
1395 flags
= bfd_get_section_flags (stdoutput
, seg
) | SEC_ALLOC
;
1399 /* s_align eats end of line; restore it. */
1401 --input_line_pointer
;
1404 if (line_label
!= NULL
)
1406 S_SET_SEGMENT (line_label
, seg
);
1407 symbol_set_frag (line_label
, frag_now
);
1408 S_SET_VALUE (line_label
, frag_now_fix ());
1409 /* Set scl to label, since that's what TI does. */
1410 if (S_GET_STORAGE_CLASS (line_label
) != C_EXT
)
1411 S_SET_STORAGE_CLASS (line_label
, C_LABEL
);
1414 seg_info (seg
)->bss
= 1; /* Uninitialized data. */
1416 p
= frag_var (rs_fill
, 1, 1,
1417 (relax_substateT
) 0, (symbolS
*) line_label
,
1418 size
* OCTETS_PER_BYTE
, (char *) 0);
1422 flags
|= SEC_TIC54X_BLOCK
;
1424 if (!bfd_set_section_flags (stdoutput
, seg
, flags
))
1425 as_warn (_("Error setting flags for \"%s\": %s"), name
,
1426 bfd_errmsg (bfd_get_error ()));
1428 subseg_set (current_seg
, current_subseg
); /* Restore current seg. */
1429 demand_empty_rest_of_line ();
1432 static enum cpu_version
1433 lookup_version (const char *ver
)
1435 enum cpu_version version
= VNONE
;
1437 if (ver
[0] == '5' && ver
[1] == '4')
1439 if (strlen (ver
) == 3
1440 && (ver
[2] == '1' || ver
[2] == '2' || ver
[2] == '3'
1441 || ver
[2] == '5' || ver
[2] == '8' || ver
[2] == '9'))
1442 version
= ver
[2] - '0';
1443 else if (strlen (ver
) == 5
1444 && TOUPPER (ver
[3]) == 'L'
1445 && TOUPPER (ver
[4]) == 'P'
1446 && (ver
[2] == '5' || ver
[2] == '6'))
1447 version
= ver
[2] - '0' + 10;
1454 set_cpu (enum cpu_version version
)
1457 if (version
== V545LP
|| version
== V546LP
)
1459 symbolS
*symbolP
= symbol_new ("__allow_lp", absolute_section
,
1460 (valueT
) 1, &zero_address_frag
);
1461 SF_SET_LOCAL (symbolP
);
1462 symbol_table_insert (symbolP
);
1466 /* .version cpu-version
1467 cpu-version may be one of the following:
1477 This is for compatibility only. It currently has no affect on assembly. */
1478 static int cpu_needs_set
= 1;
1481 tic54x_version (int x ATTRIBUTE_UNUSED
)
1483 enum cpu_version version
= VNONE
;
1484 enum cpu_version old_version
= cpu
;
1488 ILLEGAL_WITHIN_STRUCT ();
1491 ver
= input_line_pointer
;
1492 while (!is_end_of_line
[(int) *input_line_pointer
])
1493 ++input_line_pointer
;
1494 c
= *input_line_pointer
;
1495 *input_line_pointer
= 0;
1497 version
= lookup_version (ver
);
1499 if (cpu
!= VNONE
&& cpu
!= version
)
1500 as_warn (_("CPU version has already been set"));
1502 if (version
== VNONE
)
1504 as_bad (_("Unrecognized version '%s'"), ver
);
1505 ignore_rest_of_line ();
1508 else if (assembly_begun
&& version
!= old_version
)
1510 as_bad (_("Changing of CPU version on the fly not supported"));
1511 ignore_rest_of_line ();
1517 *input_line_pointer
= c
;
1518 demand_empty_rest_of_line ();
1521 /* 'f' = float, 'x' = xfloat, 'd' = double, 'l' = ldouble. */
1524 tic54x_float_cons (int type
)
1526 if (current_stag
!= 0)
1527 tic54x_struct_field ('f');
1529 #ifdef md_flush_pending_output
1530 md_flush_pending_output ();
1533 /* Align to long word boundary (4 octets) unless it's ".xfloat". */
1536 frag_align (2, 0, 2);
1537 /* If there's a label, assign it to the first allocated word. */
1538 if (line_label
!= NULL
)
1540 symbol_set_frag (line_label
, frag_now
);
1541 S_SET_VALUE (line_label
, frag_now_fix ());
1548 /* The argument is capitalized if it should be zero-terminated
1549 's' is normal string with upper 8-bits zero-filled, 'p' is packed.
1550 Code copied from stringer, and slightly modified so that strings are packed
1551 and encoded into the correct octets. */
1554 tic54x_stringer (int type
)
1557 int append_zero
= type
== 'S' || type
== 'P';
1558 int packed
= type
== 'p' || type
== 'P';
1559 int last_char
= -1; /* Packed strings need two bytes at a time to encode. */
1561 if (current_stag
!= NULL
)
1563 tic54x_struct_field ('*');
1567 #ifdef md_flush_pending_output
1568 md_flush_pending_output ();
1571 c
= ','; /* Do loop. */
1575 switch (*input_line_pointer
)
1579 unsigned short value
= get_absolute_expression ();
1580 FRAG_APPEND_1_CHAR ( value
& 0xFF);
1581 FRAG_APPEND_1_CHAR ((value
>> 8) & 0xFF);
1585 ++input_line_pointer
; /* -> 1st char of string. */
1586 while (is_a_char (c
= next_char_of_string ()))
1590 FRAG_APPEND_1_CHAR (c
);
1591 FRAG_APPEND_1_CHAR (0);
1595 /* Packed strings are filled MS octet first. */
1596 if (last_char
== -1)
1600 FRAG_APPEND_1_CHAR (c
);
1601 FRAG_APPEND_1_CHAR (last_char
);
1608 if (packed
&& last_char
!= -1)
1610 FRAG_APPEND_1_CHAR (0);
1611 FRAG_APPEND_1_CHAR (last_char
);
1616 FRAG_APPEND_1_CHAR (0);
1617 FRAG_APPEND_1_CHAR (0);
1620 know (input_line_pointer
[-1] == '\"');
1624 c
= *input_line_pointer
;
1625 if (!is_end_of_line
[c
])
1626 ++input_line_pointer
;
1629 /* Finish up any leftover packed string. */
1630 if (packed
&& last_char
!= -1)
1632 FRAG_APPEND_1_CHAR (0);
1633 FRAG_APPEND_1_CHAR (last_char
);
1635 demand_empty_rest_of_line ();
1639 tic54x_p2align (int arg ATTRIBUTE_UNUSED
)
1641 as_bad (_("p2align not supported on this target"));
1645 tic54x_align_words (int arg
)
1647 /* Only ".align" with no argument is allowed within .struct/.union. */
1650 if (!is_end_of_line
[(int) *input_line_pointer
])
1653 as_warn (_("Argument to .even ignored"));
1655 count
= get_absolute_expression ();
1658 if (current_stag
!= NULL
&& arg
== 128)
1660 if (current_stag
->current_bitfield_offset
!= 0)
1662 current_stag
->current_bitfield_offset
= 0;
1663 ++abs_section_offset
;
1665 demand_empty_rest_of_line ();
1669 ILLEGAL_WITHIN_STRUCT ();
1671 s_align_bytes (count
<< 1);
1674 /* Initialize multiple-bit fields withing a single word of memory. */
1677 tic54x_field (int ignore ATTRIBUTE_UNUSED
)
1683 symbolS
*label
= line_label
;
1685 if (current_stag
!= NULL
)
1687 tic54x_struct_field ('.');
1691 input_line_pointer
= parse_expression (input_line_pointer
, &expn
);
1693 if (*input_line_pointer
== ',')
1695 ++input_line_pointer
;
1696 size
= get_absolute_expression ();
1697 if (size
< 1 || size
> 32)
1699 as_bad (_("Invalid field size, must be from 1 to 32"));
1700 ignore_rest_of_line ();
1705 /* Truncate values to the field width. */
1706 if (expn
.X_op
!= O_constant
)
1708 /* If the expression value is relocatable, the field size *must*
1712 as_bad (_("field size must be 16 when value is relocatable"));
1713 ignore_rest_of_line ();
1717 frag_now
->tc_frag_data
= 0;
1718 emit_expr (&expn
, 2);
1722 unsigned long fmask
= (size
== 32) ? 0xFFFFFFFF : (1ul << size
) - 1;
1724 value
= expn
.X_add_number
;
1725 expn
.X_add_number
&= fmask
;
1726 if (value
!= (valueT
) expn
.X_add_number
)
1727 as_warn (_("field value truncated"));
1728 value
= expn
.X_add_number
;
1729 /* Bits are stored MS first. */
1732 frag_now
->tc_frag_data
= 0;
1734 md_number_to_chars (p
, (value
>> (size
- 16)) & 0xFFFF, 2);
1739 int bit_offset
= frag_bit_offset (frag_now
, now_seg
);
1741 fragS
*alloc_frag
= bit_offset_frag (frag_now
, now_seg
);
1742 if (bit_offset
== -1)
1744 struct bit_info
*bi
= XNEW (struct bit_info
);
1745 /* We don't know the previous offset at this time, so store the
1746 info we need and figure it out later. */
1747 expressionS size_exp
;
1749 size_exp
.X_op
= O_constant
;
1750 size_exp
.X_add_number
= size
;
1752 bi
->type
= TYPE_FIELD
;
1754 p
= frag_var (rs_machine_dependent
,
1755 4, 1, (relax_substateT
) 0,
1756 make_expr_symbol (&size_exp
), (offsetT
) 0,
1760 else if (bit_offset
== 0 || bit_offset
+ size
> 16)
1762 /* Align a new field. */
1764 frag_now
->tc_frag_data
= 0;
1765 alloc_frag
= frag_now
;
1769 /* Put the new value entirely within the existing one. */
1770 p
= alloc_frag
== frag_now
?
1771 frag_now
->fr_literal
+ frag_now_fix_octets () - 2 :
1772 alloc_frag
->fr_literal
;
1775 symbol_set_frag (label
, alloc_frag
);
1776 if (alloc_frag
== frag_now
)
1777 S_SET_VALUE (label
, frag_now_fix () - 1);
1781 value
<<= 16 - alloc_frag
->tc_frag_data
- size
;
1783 /* OR in existing value. */
1784 if (alloc_frag
->tc_frag_data
)
1785 value
|= ((unsigned short) p
[1] << 8) | p
[0];
1786 md_number_to_chars (p
, value
, 2);
1787 alloc_frag
->tc_frag_data
+= size
;
1788 if (alloc_frag
->tc_frag_data
== 16)
1789 alloc_frag
->tc_frag_data
= 0;
1793 demand_empty_rest_of_line ();
1796 /* Ideally, we want to check SEC_LOAD and SEC_HAS_CONTENTS, but those aren't
1797 available yet. seg_info ()->bss is the next best thing. */
1800 tic54x_initialized_section (segT seg
)
1802 return !seg_info (seg
)->bss
;
1805 /* .clink ["section name"]
1807 Marks the section as conditionally linked (link only if contents are
1808 referenced elsewhere.
1809 Without a name, refers to the current initialized section.
1810 Name is required for uninitialized sections. */
1813 tic54x_clink (int ignored ATTRIBUTE_UNUSED
)
1817 ILLEGAL_WITHIN_STRUCT ();
1819 if (*input_line_pointer
== '\"')
1821 char *section_name
= ++input_line_pointer
;
1824 while (is_a_char (next_char_of_string ()))
1826 know (input_line_pointer
[-1] == '\"');
1827 input_line_pointer
[-1] = 0;
1828 name
= xstrdup (section_name
);
1830 seg
= bfd_get_section_by_name (stdoutput
, name
);
1833 as_bad (_("Unrecognized section '%s'"), section_name
);
1834 ignore_rest_of_line ();
1840 if (!tic54x_initialized_section (seg
))
1842 as_bad (_("Current section is unitialized, "
1843 "section name required for .clink"));
1844 ignore_rest_of_line ();
1849 seg
->flags
|= SEC_TIC54X_CLINK
;
1851 demand_empty_rest_of_line ();
1854 /* Change the default include directory to be the current source file's
1855 directory, instead of the current working directory. If DOT is non-zero,
1856 set to "." instead. */
1859 tic54x_set_default_include (int dot
)
1861 const char *dir
= ".";
1866 const char *curfile
;
1869 curfile
= as_where (&lineno
);
1870 dir
= xstrdup (curfile
);
1871 tmp
= strrchr (dir
, '/');
1879 if (include_dir_count
== 0)
1881 include_dirs
= XNEWVEC (const char *, 1);
1882 include_dir_count
= 1;
1884 include_dirs
[0] = dir
;
1885 if (len
> include_dir_maxlen
)
1886 include_dir_maxlen
= len
;
1888 else if (include_dirs
!= NULL
)
1889 include_dirs
[0] = ".";
1892 /* .include "filename" | filename
1893 .copy "filename" | filename
1895 FIXME 'include' file should be omitted from any output listing,
1896 'copy' should be included in any output listing
1897 FIXME -- prevent any included files from changing listing (compat only)
1898 FIXME -- need to include source file directory in search path; what's a
1899 good way to do this?
1901 Entering/exiting included/copied file clears all local labels. */
1904 tic54x_include (int ignored ATTRIBUTE_UNUSED
)
1906 char newblock
[] = " .newblock\n";
1911 ILLEGAL_WITHIN_STRUCT ();
1915 if (*input_line_pointer
== '"')
1917 filename
= demand_copy_C_string (&len
);
1918 demand_empty_rest_of_line ();
1922 filename
= input_line_pointer
;
1923 while (!is_end_of_line
[(int) *input_line_pointer
])
1924 ++input_line_pointer
;
1925 c
= *input_line_pointer
;
1926 *input_line_pointer
= '\0';
1927 filename
= xstrdup (filename
);
1928 *input_line_pointer
= c
;
1929 demand_empty_rest_of_line ();
1931 /* Insert a partial line with the filename (for the sake of s_include)
1933 The included file will be inserted before the newblock, so that the
1934 newblock is executed after the included file is processed. */
1935 input
= concat ("\"", filename
, "\"\n", newblock
, (char *) NULL
);
1936 input_scrub_insert_line (input
);
1938 tic54x_clear_local_labels (0);
1940 tic54x_set_default_include (0);
1946 tic54x_message (int type
)
1952 ILLEGAL_WITHIN_STRUCT ();
1954 if (*input_line_pointer
== '"')
1955 msg
= demand_copy_C_string (&len
);
1958 msg
= input_line_pointer
;
1959 while (!is_end_of_line
[(int) *input_line_pointer
])
1960 ++input_line_pointer
;
1961 c
= *input_line_pointer
;
1962 *input_line_pointer
= 0;
1963 msg
= xstrdup (msg
);
1964 *input_line_pointer
= c
;
1970 as_tsktsk ("%s", msg
);
1973 as_warn ("%s", msg
);
1980 demand_empty_rest_of_line ();
1984 Define a special symbol that refers to the loadtime address rather than the
1985 runtime address within the current section.
1987 This symbol gets a special storage class so that when it is resolved, it is
1988 resolved relative to the load address (lma) of the section rather than the
1989 run address (vma). */
1992 tic54x_label (int ignored ATTRIBUTE_UNUSED
)
1998 ILLEGAL_WITHIN_STRUCT ();
2000 c
= get_symbol_name (&name
);
2001 symbolP
= colon (name
);
2002 S_SET_STORAGE_CLASS (symbolP
, C_STATLAB
);
2004 (void) restore_line_pointer (c
);
2005 demand_empty_rest_of_line ();
2009 Install all memory-mapped register names into the symbol table as
2010 absolute local symbols. */
2013 tic54x_mmregs (int ignored ATTRIBUTE_UNUSED
)
2017 ILLEGAL_WITHIN_STRUCT ();
2019 for (sym
= (symbol
*) mmregs
; sym
->name
; sym
++)
2021 symbolS
*symbolP
= symbol_new (sym
->name
, absolute_section
,
2022 (valueT
) sym
->value
, &zero_address_frag
);
2023 SF_SET_LOCAL (symbolP
);
2024 symbol_table_insert (symbolP
);
2029 Count defaults to 1024. */
2032 tic54x_loop (int count
)
2034 ILLEGAL_WITHIN_STRUCT ();
2037 if (!is_end_of_line
[(int) *input_line_pointer
])
2038 count
= get_absolute_expression ();
2040 do_repeat (count
, "LOOP", "ENDLOOP");
2043 /* Normally, endloop gets eaten by the preceding loop. */
2046 tic54x_endloop (int ignore ATTRIBUTE_UNUSED
)
2048 as_bad (_("ENDLOOP without corresponding LOOP"));
2049 ignore_rest_of_line ();
2052 /* .break [condition]. */
2055 tic54x_break (int ignore ATTRIBUTE_UNUSED
)
2059 ILLEGAL_WITHIN_STRUCT ();
2062 if (!is_end_of_line
[(int) *input_line_pointer
])
2063 cond
= get_absolute_expression ();
2066 end_repeat (substitution_line
? 1 : 0);
2070 set_address_mode (int mode
)
2073 if (mode
== far_mode
)
2075 symbolS
*symbolP
= symbol_new ("__allow_far", absolute_section
,
2076 (valueT
) 1, &zero_address_frag
);
2077 SF_SET_LOCAL (symbolP
);
2078 symbol_table_insert (symbolP
);
2082 static int address_mode_needs_set
= 1;
2085 tic54x_address_mode (int mode
)
2087 if (assembly_begun
&& amode
!= (unsigned) mode
)
2089 as_bad (_("Mixing of normal and extended addressing not supported"));
2090 ignore_rest_of_line ();
2093 if (mode
== far_mode
&& cpu
!= VNONE
&& cpu
!= V548
&& cpu
!= V549
)
2095 as_bad (_("Extended addressing not supported on the specified CPU"));
2096 ignore_rest_of_line ();
2100 set_address_mode (mode
);
2101 demand_empty_rest_of_line ();
2104 /* .sblock "section"|section [,...,"section"|section]
2105 Designate initialized sections for blocking. */
2108 tic54x_sblock (int ignore ATTRIBUTE_UNUSED
)
2112 ILLEGAL_WITHIN_STRUCT ();
2119 if (*input_line_pointer
== '"')
2123 name
= demand_copy_C_string (&len
);
2129 c
= get_symbol_name (§ion_name
);
2130 name
= xstrdup (section_name
);
2131 (void) restore_line_pointer (c
);
2134 seg
= bfd_get_section_by_name (stdoutput
, name
);
2137 as_bad (_("Unrecognized section '%s'"), name
);
2138 ignore_rest_of_line ();
2141 else if (!tic54x_initialized_section (seg
))
2143 as_bad (_(".sblock may be used for initialized sections only"));
2144 ignore_rest_of_line ();
2147 seg
->flags
|= SEC_TIC54X_BLOCK
;
2149 c
= *input_line_pointer
;
2150 if (!is_end_of_line
[(int) c
])
2151 ++input_line_pointer
;
2154 demand_empty_rest_of_line ();
2157 /* symbol .set value
2160 value must be defined externals; no forward-referencing allowed
2161 symbols assigned with .set/.equ may not be redefined. */
2164 tic54x_set (int ignore ATTRIBUTE_UNUSED
)
2169 ILLEGAL_WITHIN_STRUCT ();
2173 as_bad (_("Symbol missing for .set/.equ"));
2174 ignore_rest_of_line ();
2177 name
= xstrdup (S_GET_NAME (line_label
));
2179 if ((symbolP
= symbol_find (name
)) == NULL
2180 && (symbolP
= md_undefined_symbol (name
)) == NULL
)
2182 symbolP
= symbol_new (name
, absolute_section
, 0, &zero_address_frag
);
2183 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
2186 S_SET_DATA_TYPE (symbolP
, T_INT
);
2187 S_SET_SEGMENT (symbolP
, absolute_section
);
2188 symbol_table_insert (symbolP
);
2189 pseudo_set (symbolP
);
2190 demand_empty_rest_of_line ();
2195 List false conditional blocks. */
2198 tic54x_fclist (int show
)
2201 listing
&= ~LISTING_NOCOND
;
2203 listing
|= LISTING_NOCOND
;
2204 demand_empty_rest_of_line ();
2208 tic54x_sslist (int show
)
2210 ILLEGAL_WITHIN_STRUCT ();
2212 listing_sslist
= show
;
2215 /* .var SYM[,...,SYMN]
2216 Define a substitution string to be local to a macro. */
2219 tic54x_var (int ignore ATTRIBUTE_UNUSED
)
2221 static char empty
[] = "";
2225 ILLEGAL_WITHIN_STRUCT ();
2227 if (macro_level
== 0)
2229 as_bad (_(".var may only be used within a macro definition"));
2230 ignore_rest_of_line ();
2235 if (!ISALPHA (*input_line_pointer
))
2237 as_bad (_("Substitution symbols must begin with a letter"));
2238 ignore_rest_of_line ();
2241 c
= get_symbol_name (&name
);
2242 /* .var symbols start out with a null string. */
2243 name
= xstrdup (name
);
2244 hash_insert (subsym_hash
[macro_level
], name
, empty
);
2245 c
= restore_line_pointer (c
);
2248 ++input_line_pointer
;
2249 if (is_end_of_line
[(int) *input_line_pointer
])
2250 c
= *input_line_pointer
;
2255 demand_empty_rest_of_line ();
2258 /* .mlib <macro library filename>
2260 Macro libraries are archived (standard AR-format) text macro definitions
2261 Expand the file and include it.
2263 FIXME need to try the source file directory as well. */
2266 tic54x_mlib (int ignore ATTRIBUTE_UNUSED
)
2273 ILLEGAL_WITHIN_STRUCT ();
2275 /* Parse the filename. */
2276 if (*input_line_pointer
== '"')
2278 if ((filename
= demand_copy_C_string (&len
)) == NULL
)
2285 while (!is_end_of_line
[(int) *input_line_pointer
]
2286 && !ISSPACE (*input_line_pointer
))
2288 obstack_1grow (¬es
, *input_line_pointer
);
2289 ++input_line_pointer
;
2292 obstack_1grow (¬es
, '\0');
2293 filename
= obstack_finish (¬es
);
2295 demand_empty_rest_of_line ();
2297 tic54x_set_default_include (0);
2298 path
= XNEWVEC (char, (unsigned long) len
+ include_dir_maxlen
+ 5);
2300 for (i
= 0; i
< include_dir_count
; i
++)
2304 strcpy (path
, include_dirs
[i
]);
2306 strcat (path
, filename
);
2307 if ((try = fopen (path
, "r")) != NULL
)
2314 if (i
>= include_dir_count
)
2320 /* FIXME: if path is found, malloc'd storage is not freed. Of course, this
2321 happens all over the place, and since the assembler doesn't usually keep
2322 running for a very long time, it really doesn't matter. */
2323 register_dependency (path
);
2325 /* Expand all archive entries to temporary files and include them. */
2326 abfd
= bfd_openr (path
, NULL
);
2329 as_bad (_("can't open macro library file '%s' for reading: %s"),
2330 path
, bfd_errmsg (bfd_get_error ()));
2331 ignore_rest_of_line ();
2334 if (!bfd_check_format (abfd
, bfd_archive
))
2336 as_bad (_("File '%s' not in macro archive format"), path
);
2337 ignore_rest_of_line ();
2341 /* Open each BFD as binary (it should be straight ASCII text). */
2342 for (mbfd
= bfd_openr_next_archived_file (abfd
, NULL
);
2343 mbfd
!= NULL
; mbfd
= bfd_openr_next_archived_file (abfd
, mbfd
))
2345 /* Get a size at least as big as the archive member. */
2346 bfd_size_type size
= bfd_get_size (mbfd
);
2347 char *buf
= XNEWVEC (char, size
);
2348 char *fname
= tmpnam (NULL
);
2351 /* We're not sure how big it is, but it will be smaller than "size". */
2352 size
= bfd_bread (buf
, size
, mbfd
);
2354 /* Write to a temporary file, then use s_include to include it
2356 ftmp
= fopen (fname
, "w+b");
2357 fwrite ((void *) buf
, size
, 1, ftmp
);
2358 if (size
== 0 || buf
[size
- 1] != '\n')
2359 fwrite ("\n", 1, 1, ftmp
);
2362 input_scrub_insert_file (fname
);
2367 const pseudo_typeS md_pseudo_table
[] =
2369 { "algebraic", s_ignore
, 0 },
2370 { "align" , tic54x_align_words
, 128 },
2371 { "ascii" , tic54x_stringer
, 'p' },
2372 { "asciz" , tic54x_stringer
, 'P' },
2373 { "even" , tic54x_align_words
, 2 },
2374 { "asg" , tic54x_asg
, 0 },
2375 { "eval" , tic54x_eval
, 0 },
2376 { "bss" , tic54x_bss
, 0 },
2377 { "byte" , tic54x_cons
, 'b' },
2378 { "ubyte" , tic54x_cons
, 'B' },
2379 { "char" , tic54x_cons
, 'c' },
2380 { "uchar" , tic54x_cons
, 'C' },
2381 { "clink" , tic54x_clink
, 0 },
2382 { "c_mode" , tic54x_address_mode
, c_mode
},
2383 { "copy" , tic54x_include
, 'c' },
2384 { "include" , tic54x_include
, 'i' },
2385 { "data" , tic54x_sect
, 'd' },
2386 { "double" , tic54x_float_cons
, 'd' },
2387 { "ldouble" , tic54x_float_cons
, 'l' },
2388 { "drlist" , s_ignore
, 0 },
2389 { "drnolist" , s_ignore
, 0 },
2390 { "emsg" , tic54x_message
, 'e' },
2391 { "mmsg" , tic54x_message
, 'm' },
2392 { "wmsg" , tic54x_message
, 'w' },
2393 { "far_mode" , tic54x_address_mode
, far_mode
},
2394 { "fclist" , tic54x_fclist
, 1 },
2395 { "fcnolist" , tic54x_fclist
, 0 },
2396 { "field" , tic54x_field
, -1 },
2397 { "float" , tic54x_float_cons
, 'f' },
2398 { "xfloat" , tic54x_float_cons
, 'x' },
2399 { "global" , tic54x_global
, 'g' },
2400 { "def" , tic54x_global
, 'd' },
2401 { "ref" , tic54x_global
, 'r' },
2402 { "half" , tic54x_cons
, 'h' },
2403 { "uhalf" , tic54x_cons
, 'H' },
2404 { "short" , tic54x_cons
, 's' },
2405 { "ushort" , tic54x_cons
, 'S' },
2406 { "if" , s_if
, (int) O_ne
},
2407 { "elseif" , s_elseif
, (int) O_ne
},
2408 { "else" , s_else
, 0 },
2409 { "endif" , s_endif
, 0 },
2410 { "int" , tic54x_cons
, 'i' },
2411 { "uint" , tic54x_cons
, 'I' },
2412 { "word" , tic54x_cons
, 'w' },
2413 { "uword" , tic54x_cons
, 'W' },
2414 { "label" , tic54x_label
, 0 }, /* Loadtime
2416 { "length" , s_ignore
, 0 },
2417 { "width" , s_ignore
, 0 },
2418 { "long" , tic54x_cons
, 'l' },
2419 { "ulong" , tic54x_cons
, 'L' },
2420 { "xlong" , tic54x_cons
, 'x' },
2421 { "loop" , tic54x_loop
, 1024 },
2422 { "break" , tic54x_break
, 0 },
2423 { "endloop" , tic54x_endloop
, 0 },
2424 { "mlib" , tic54x_mlib
, 0 },
2425 { "mlist" , s_ignore
, 0 },
2426 { "mnolist" , s_ignore
, 0 },
2427 { "mmregs" , tic54x_mmregs
, 0 },
2428 { "newblock" , tic54x_clear_local_labels
, 0 },
2429 { "option" , s_ignore
, 0 },
2430 { "p2align" , tic54x_p2align
, 0 },
2431 { "sblock" , tic54x_sblock
, 0 },
2432 { "sect" , tic54x_sect
, '*' },
2433 { "set" , tic54x_set
, 0 },
2434 { "equ" , tic54x_set
, 0 },
2435 { "space" , tic54x_space
, 0 },
2436 { "bes" , tic54x_space
, 1 },
2437 { "sslist" , tic54x_sslist
, 1 },
2438 { "ssnolist" , tic54x_sslist
, 0 },
2439 { "string" , tic54x_stringer
, 's' },
2440 { "pstring" , tic54x_stringer
, 'p' },
2441 { "struct" , tic54x_struct
, 0 },
2442 { "tag" , tic54x_tag
, 0 },
2443 { "endstruct", tic54x_endstruct
, 0 },
2444 { "tab" , s_ignore
, 0 },
2445 { "text" , tic54x_sect
, 't' },
2446 { "union" , tic54x_struct
, 1 },
2447 { "endunion" , tic54x_endstruct
, 1 },
2448 { "usect" , tic54x_usect
, 0 },
2449 { "var" , tic54x_var
, 0 },
2450 { "version" , tic54x_version
, 0 },
2455 md_parse_option (int c
, const char *arg
)
2461 case OPTION_COFF_VERSION
:
2463 int version
= atoi (arg
);
2465 if (version
!= 0 && version
!= 1 && version
!= 2)
2466 as_fatal (_("Bad COFF version '%s'"), arg
);
2467 /* FIXME -- not yet implemented. */
2470 case OPTION_CPU_VERSION
:
2472 cpu
= lookup_version (arg
);
2475 as_fatal (_("Bad CPU version '%s'"), arg
);
2478 case OPTION_ADDRESS_MODE
:
2480 address_mode_needs_set
= 1;
2482 case OPTION_STDERR_TO_FILE
:
2484 const char *filename
= arg
;
2485 FILE *fp
= fopen (filename
, "w+");
2488 as_fatal (_("Can't redirect stderr to the file '%s'"), filename
);
2490 if ((fp
= freopen (filename
, "w+", stderr
)) == NULL
)
2491 as_fatal (_("Can't redirect stderr to the file '%s'"), filename
);
2499 /* Create a "local" substitution string hash table for a new macro level
2500 Some docs imply that macros have to use .newblock in order to be able
2501 to re-use a local label. We effectively do an automatic .newblock by
2502 deleting the local label hash between macro invocations. */
2505 tic54x_macro_start (void)
2508 subsym_hash
[macro_level
] = hash_new ();
2509 local_label_hash
[macro_level
] = hash_new ();
2513 tic54x_macro_info (const macro_entry
*macro
)
2515 const formal_entry
*entry
;
2517 /* Put the formal args into the substitution symbol table. */
2518 for (entry
= macro
->formals
; entry
; entry
= entry
->next
)
2520 char *name
= xstrndup (entry
->name
.ptr
, entry
->name
.len
);
2521 char *value
= xstrndup (entry
->actual
.ptr
, entry
->actual
.len
);
2523 name
[entry
->name
.len
] = '\0';
2524 value
[entry
->actual
.len
] = '\0';
2525 hash_insert (subsym_hash
[macro_level
], name
, value
);
2529 /* Get rid of this macro's .var's, arguments, and local labels. */
2532 tic54x_macro_end (void)
2534 hash_die (subsym_hash
[macro_level
]);
2535 subsym_hash
[macro_level
] = NULL
;
2536 hash_die (local_label_hash
[macro_level
]);
2537 local_label_hash
[macro_level
] = NULL
;
2542 subsym_symlen (char *a
, char *ignore ATTRIBUTE_UNUSED
)
2547 /* Compare symbol A to string B. */
2550 subsym_symcmp (char *a
, char *b
)
2552 return strcmp (a
, b
);
2555 /* Return the index of the first occurrence of B in A, or zero if none
2556 assumes b is an integer char value as a string. Index is one-based. */
2559 subsym_firstch (char *a
, char *b
)
2562 char *tmp
= strchr (a
, val
);
2564 return tmp
? tmp
- a
+ 1 : 0;
2567 /* Similar to firstch, but returns index of last occurrence of B in A. */
2570 subsym_lastch (char *a
, char *b
)
2573 char *tmp
= strrchr (a
, val
);
2575 return tmp
? tmp
- a
+ 1 : 0;
2578 /* Returns 1 if string A is defined in the symbol table (NOT the substitution
2582 subsym_isdefed (char *a
, char *ignore ATTRIBUTE_UNUSED
)
2584 symbolS
*symbolP
= symbol_find (a
);
2586 return symbolP
!= NULL
;
2589 /* Assign first member of comma-separated list B (e.g. "1,2,3") to the symbol
2590 A, or zero if B is a null string. Both arguments *must* be substitution
2591 symbols, unsubstituted. */
2594 subsym_ismember (char *sym
, char *list
)
2596 char *elem
, *ptr
, *listv
;
2601 listv
= subsym_lookup (list
, macro_level
);
2604 as_bad (_("Undefined substitution symbol '%s'"), list
);
2605 ignore_rest_of_line ();
2609 ptr
= elem
= xstrdup (listv
);
2610 while (*ptr
&& *ptr
!= ',')
2614 subsym_create_or_replace (sym
, elem
);
2616 /* Reassign the list. */
2617 subsym_create_or_replace (list
, ptr
);
2619 /* Assume this value, docs aren't clear. */
2623 /* Return zero if not a constant; otherwise:
2631 subsym_iscons (char *a
, char *ignore ATTRIBUTE_UNUSED
)
2635 parse_expression (a
, &expn
);
2637 if (expn
.X_op
== O_constant
)
2639 int len
= strlen (a
);
2641 switch (TOUPPER (a
[len
- 1]))
2654 /* No suffix; either octal, hex, or decimal. */
2655 if (*a
== '0' && len
> 1)
2657 if (TOUPPER (a
[1]) == 'X')
2667 /* Return 1 if A is a valid symbol name. Expects string input. */
2670 subsym_isname (char *a
, char *ignore ATTRIBUTE_UNUSED
)
2672 if (!is_name_beginner (*a
))
2676 if (!is_part_of_name (*a
))
2683 /* Return whether the string is a register; accepts ar0-7, unless .mmregs has
2684 been seen; if so, recognize any memory-mapped register.
2685 Note this does not recognize "A" or "B" accumulators. */
2688 subsym_isreg (char *a
, char *ignore ATTRIBUTE_UNUSED
)
2690 if (hash_find (reg_hash
, a
))
2692 if (hash_find (mmreg_hash
, a
))
2697 /* Return the structure size, given the stag. */
2700 subsym_structsz (char *name
, char *ignore ATTRIBUTE_UNUSED
)
2702 struct stag
*stag
= (struct stag
*) hash_find (stag_hash
, name
);
2710 /* If anybody actually uses this, they can fix it :)
2711 FIXME I'm not sure what the "reference point" of a structure is. It might
2712 be either the initial offset given .struct, or it may be the offset of the
2713 structure within another structure, or it might be something else
2714 altogether. since the TI assembler doesn't seem to ever do anything but
2715 return zero, we punt and return zero. */
2718 subsym_structacc (char *stag_name ATTRIBUTE_UNUSED
,
2719 char *ignore ATTRIBUTE_UNUSED
)
2725 math_ceil (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2727 return (float) ceil (arg1
);
2731 math_cvi (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2737 math_floor (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2739 return (float) floor (arg1
);
2743 math_fmod (float arg1
, float arg2
)
2745 return (int) arg1
% (int) arg2
;
2749 math_int (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2751 return ((float) ((int) arg1
)) == arg1
;
2755 math_round (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2757 return arg1
> 0 ? (int) (arg1
+ 0.5) : (int) (arg1
- 0.5);
2761 math_sgn (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2763 return (arg1
< 0) ? -1 : (arg1
? 1 : 0);
2767 math_trunc (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2773 math_acos (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2775 return (float) acos (arg1
);
2779 math_asin (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2781 return (float) asin (arg1
);
2785 math_atan (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2787 return (float) atan (arg1
);
2791 math_atan2 (float arg1
, float arg2
)
2793 return (float) atan2 (arg1
, arg2
);
2797 math_cosh (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2799 return (float) cosh (arg1
);
2803 math_cos (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2805 return (float) cos (arg1
);
2809 math_cvf (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2811 return (float) arg1
;
2815 math_exp (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2817 return (float) exp (arg1
);
2821 math_fabs (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2823 return (float) fabs (arg1
);
2826 /* expr1 * 2^expr2. */
2829 math_ldexp (float arg1
, float arg2
)
2831 return arg1
* (float) pow (2.0, arg2
);
2835 math_log10 (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2837 return (float) log10 (arg1
);
2841 math_log (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2843 return (float) log (arg1
);
2847 math_max (float arg1
, float arg2
)
2849 return (arg1
> arg2
) ? arg1
: arg2
;
2853 math_min (float arg1
, float arg2
)
2855 return (arg1
< arg2
) ? arg1
: arg2
;
2859 math_pow (float arg1
, float arg2
)
2861 return (float) pow (arg1
, arg2
);
2865 math_sin (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2867 return (float) sin (arg1
);
2871 math_sinh (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2873 return (float) sinh (arg1
);
2877 math_sqrt (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2879 return (float) sqrt (arg1
);
2883 math_tan (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2885 return (float) tan (arg1
);
2889 math_tanh (float arg1
, float ignore ATTRIBUTE_UNUSED
)
2891 return (float) tanh (arg1
);
2894 /* Built-in substitution symbol functions and math functions. */
2898 int (*proc
) (char *, char *);
2900 } subsym_proc_entry
;
2902 static const subsym_proc_entry subsym_procs
[] =
2904 /* Assembler built-in string substitution functions. */
2905 { "$symlen", subsym_symlen
, 1, },
2906 { "$symcmp", subsym_symcmp
, 2, },
2907 { "$firstch", subsym_firstch
, 2, },
2908 { "$lastch", subsym_lastch
, 2, },
2909 { "$isdefed", subsym_isdefed
, 1, },
2910 { "$ismember", subsym_ismember
, 2, },
2911 { "$iscons", subsym_iscons
, 1, },
2912 { "$isname", subsym_isname
, 1, },
2913 { "$isreg", subsym_isreg
, 1, },
2914 { "$structsz", subsym_structsz
, 1, },
2915 { "$structacc", subsym_structacc
, 1, },
2922 float (*proc
) (float, float);
2927 static const math_proc_entry math_procs
[] =
2929 /* Integer-returning built-in math functions. */
2930 { "$cvi", math_cvi
, 1, 1 },
2931 { "$int", math_int
, 1, 1 },
2932 { "$sgn", math_sgn
, 1, 1 },
2934 /* Float-returning built-in math functions. */
2935 { "$acos", math_acos
, 1, 0 },
2936 { "$asin", math_asin
, 1, 0 },
2937 { "$atan", math_atan
, 1, 0 },
2938 { "$atan2", math_atan2
, 2, 0 },
2939 { "$ceil", math_ceil
, 1, 0 },
2940 { "$cosh", math_cosh
, 1, 0 },
2941 { "$cos", math_cos
, 1, 0 },
2942 { "$cvf", math_cvf
, 1, 0 },
2943 { "$exp", math_exp
, 1, 0 },
2944 { "$fabs", math_fabs
, 1, 0 },
2945 { "$floor", math_floor
, 1, 0 },
2946 { "$fmod", math_fmod
, 2, 0 },
2947 { "$ldexp", math_ldexp
, 2, 0 },
2948 { "$log10", math_log10
, 1, 0 },
2949 { "$log", math_log
, 1, 0 },
2950 { "$max", math_max
, 2, 0 },
2951 { "$min", math_min
, 2, 0 },
2952 { "$pow", math_pow
, 2, 0 },
2953 { "$round", math_round
, 1, 0 },
2954 { "$sin", math_sin
, 1, 0 },
2955 { "$sinh", math_sinh
, 1, 0 },
2956 { "$sqrt", math_sqrt
, 1, 0 },
2957 { "$tan", math_tan
, 1, 0 },
2958 { "$tanh", math_tanh
, 1, 0 },
2959 { "$trunc", math_trunc
, 1, 0 },
2960 { NULL
, NULL
, 0, 0 },
2968 const subsym_proc_entry
*subsym_proc
;
2969 const math_proc_entry
*math_proc
;
2970 const char *hash_err
;
2972 char *TIC54X_DIR
= getenv ("TIC54X_DIR");
2973 char *A_DIR
= TIC54X_DIR
? TIC54X_DIR
: getenv ("A_DIR");
2977 /* Look for A_DIR and add it to the include list. */
2980 char *tmp
= xstrdup (A_DIR
);
2984 char *next
= strchr (tmp
, ';');
2988 add_include_dir (tmp
);
2991 while (tmp
!= NULL
);
2994 op_hash
= hash_new ();
2995 for (tm
= (insn_template
*) tic54x_optab
; tm
->name
; tm
++)
2997 if (hash_find (op_hash
, tm
->name
))
2999 hash_err
= hash_insert (op_hash
, tm
->name
, (char *) tm
);
3001 as_fatal ("Internal Error: Can't hash %s: %s",
3002 tm
->name
, hash_err
);
3004 parop_hash
= hash_new ();
3005 for (tm
= (insn_template
*) tic54x_paroptab
; tm
->name
; tm
++)
3007 if (hash_find (parop_hash
, tm
->name
))
3009 hash_err
= hash_insert (parop_hash
, tm
->name
, (char *) tm
);
3011 as_fatal ("Internal Error: Can't hash %s: %s",
3012 tm
->name
, hash_err
);
3014 reg_hash
= hash_new ();
3015 for (sym
= (symbol
*) regs
; sym
->name
; sym
++)
3017 /* Add basic registers to the symbol table. */
3018 symbolS
*symbolP
= symbol_new (sym
->name
, absolute_section
,
3019 (valueT
) sym
->value
, &zero_address_frag
);
3020 SF_SET_LOCAL (symbolP
);
3021 symbol_table_insert (symbolP
);
3022 hash_err
= hash_insert (reg_hash
, sym
->name
, (char *) sym
);
3024 for (sym
= (symbol
*) mmregs
; sym
->name
; sym
++)
3025 hash_err
= hash_insert (reg_hash
, sym
->name
, (char *) sym
);
3026 mmreg_hash
= hash_new ();
3027 for (sym
= (symbol
*) mmregs
; sym
->name
; sym
++)
3028 hash_err
= hash_insert (mmreg_hash
, sym
->name
, (char *) sym
);
3030 cc_hash
= hash_new ();
3031 for (sym
= (symbol
*) condition_codes
; sym
->name
; sym
++)
3032 hash_err
= hash_insert (cc_hash
, sym
->name
, (char *) sym
);
3034 cc2_hash
= hash_new ();
3035 for (sym
= (symbol
*) cc2_codes
; sym
->name
; sym
++)
3036 hash_err
= hash_insert (cc2_hash
, sym
->name
, (char *) sym
);
3038 cc3_hash
= hash_new ();
3039 for (sym
= (symbol
*) cc3_codes
; sym
->name
; sym
++)
3040 hash_err
= hash_insert (cc3_hash
, sym
->name
, (char *) sym
);
3042 sbit_hash
= hash_new ();
3043 for (sym
= (symbol
*) status_bits
; sym
->name
; sym
++)
3044 hash_err
= hash_insert (sbit_hash
, sym
->name
, (char *) sym
);
3046 misc_symbol_hash
= hash_new ();
3047 for (symname
= (char **) misc_symbols
; *symname
; symname
++)
3048 hash_err
= hash_insert (misc_symbol_hash
, *symname
, *symname
);
3050 /* Only the base substitution table and local label table are initialized;
3051 the others (for local macro substitution) get instantiated as needed. */
3052 local_label_hash
[0] = hash_new ();
3053 subsym_hash
[0] = hash_new ();
3054 for (subsym_proc
= subsym_procs
; subsym_proc
->name
; subsym_proc
++)
3055 hash_err
= hash_insert (subsym_hash
[0], subsym_proc
->name
,
3056 (char *) subsym_proc
);
3058 math_hash
= hash_new ();
3059 for (math_proc
= math_procs
; math_proc
->name
; math_proc
++)
3061 /* Insert into the main subsym hash for recognition; insert into
3062 the math hash to actually store information. */
3063 hash_err
= hash_insert (subsym_hash
[0], math_proc
->name
,
3064 (char *) math_proc
);
3065 hash_err
= hash_insert (math_hash
, math_proc
->name
,
3066 (char *) math_proc
);
3068 subsym_recurse_hash
= hash_new ();
3069 stag_hash
= hash_new ();
3073 is_accumulator (struct opstruct
*operand
)
3075 return strcasecmp (operand
->buf
, "a") == 0
3076 || strcasecmp (operand
->buf
, "b") == 0;
3079 /* Return the number of operands found, or -1 on error, copying the
3080 operands into the given array and the accompanying expressions into
3084 get_operands (struct opstruct operands
[], char *line
)
3088 int expecting_operand
= 0;
3091 while (numexp
< MAX_OPERANDS
&& !is_end_of_line
[(int) *lptr
])
3093 int paren_not_balanced
= 0;
3094 char *op_start
, *op_end
;
3096 while (*lptr
&& ISSPACE (*lptr
))
3099 while (paren_not_balanced
|| *lptr
!= ',')
3103 if (paren_not_balanced
)
3105 as_bad (_("Unbalanced parenthesis in operand %d"), numexp
);
3112 ++paren_not_balanced
;
3113 else if (*lptr
== ')')
3114 --paren_not_balanced
;
3118 if (op_end
!= op_start
)
3120 int len
= op_end
- op_start
;
3122 strncpy (operands
[numexp
].buf
, op_start
, len
);
3123 operands
[numexp
].buf
[len
] = 0;
3124 /* Trim trailing spaces; while the preprocessor gets rid of most,
3125 there are weird usage patterns that can introduce them
3126 (i.e. using strings for macro args). */
3127 while (len
> 0 && ISSPACE (operands
[numexp
].buf
[len
- 1]))
3128 operands
[numexp
].buf
[--len
] = 0;
3134 if (expecting_operand
|| *lptr
== ',')
3136 as_bad (_("Expecting operand after ','"));
3142 if (*++lptr
== '\0')
3144 as_bad (_("Expecting operand after ','"));
3147 expecting_operand
= 1;
3151 while (*lptr
&& ISSPACE (*lptr
++))
3153 if (!is_end_of_line
[(int) *lptr
])
3155 as_bad (_("Extra junk on line"));
3159 /* OK, now parse them into expressions. */
3160 for (i
= 0; i
< numexp
; i
++)
3162 memset (&operands
[i
].exp
, 0, sizeof (operands
[i
].exp
));
3163 if (operands
[i
].buf
[0] == '#')
3166 parse_expression (operands
[i
].buf
+ 1, &operands
[i
].exp
);
3168 else if (operands
[i
].buf
[0] == '@')
3170 /* Direct notation. */
3171 parse_expression (operands
[i
].buf
+ 1, &operands
[i
].exp
);
3173 else if (operands
[i
].buf
[0] == '*')
3176 char *paren
= strchr (operands
[i
].buf
, '(');
3178 /* Allow immediate syntax in the inner expression. */
3179 if (paren
&& paren
[1] == '#')
3182 /* Pull out the lk expression or SP offset, if present. */
3185 int len
= strlen (paren
);
3186 char *end
= paren
+ len
;
3189 while (end
[-1] != ')')
3192 as_bad (_("Badly formed address expression"));
3197 parse_expression (paren
, &operands
[i
].exp
);
3201 operands
[i
].exp
.X_op
= O_absent
;
3204 parse_expression (operands
[i
].buf
, &operands
[i
].exp
);
3210 /* Predicates for different operand types. */
3213 is_immediate (struct opstruct
*operand
)
3215 return *operand
->buf
== '#';
3218 /* This is distinguished from immediate because some numbers must be constants
3219 and must *not* have the '#' prefix. */
3222 is_absolute (struct opstruct
*operand
)
3224 return operand
->exp
.X_op
== O_constant
&& !is_immediate (operand
);
3227 /* Is this an indirect operand? */
3230 is_indirect (struct opstruct
*operand
)
3232 return operand
->buf
[0] == '*';
3235 /* Is this a valid dual-memory operand? */
3238 is_dual (struct opstruct
*operand
)
3240 if (is_indirect (operand
) && strncasecmp (operand
->buf
, "*ar", 3) == 0)
3242 char *tmp
= operand
->buf
+ 3;
3247 /* Only allow *ARx, *ARx-, *ARx+, or *ARx+0%. */
3248 valid_mod
= *tmp
== '\0' ||
3249 strcasecmp (tmp
, "-") == 0 ||
3250 strcasecmp (tmp
, "+") == 0 ||
3251 strcasecmp (tmp
, "+0%") == 0;
3252 return arf
>= 2 && arf
<= 5 && valid_mod
;
3258 is_mmreg (struct opstruct
*operand
)
3260 return (is_absolute (operand
)
3261 || is_immediate (operand
)
3262 || hash_find (mmreg_hash
, operand
->buf
) != 0);
3266 is_type (struct opstruct
*operand
, enum optype type
)
3271 return operand
->buf
[0] == 0;
3274 return is_dual (operand
);
3276 return is_indirect (operand
);
3278 /* This one *must* be immediate. */
3279 return is_immediate (operand
);
3288 /* Address may be a numeric, indirect, or an expression. */
3289 return !is_immediate (operand
);
3292 return is_mmreg (operand
);
3297 return is_accumulator (operand
);
3299 return is_accumulator (operand
) && TOUPPER (operand
->buf
[0]) == 'B';
3301 return is_accumulator (operand
) && TOUPPER (operand
->buf
[0]) == 'A';
3303 return strncasecmp ("ar", operand
->buf
, 2) == 0
3304 && ISDIGIT (operand
->buf
[2]);
3306 return hash_find (sbit_hash
, operand
->buf
) != 0 || is_absolute (operand
);
3308 return hash_find (cc_hash
, operand
->buf
) != 0;
3310 return hash_find (cc2_hash
, operand
->buf
) != 0;
3312 return hash_find (cc3_hash
, operand
->buf
) != 0
3313 || is_immediate (operand
) || is_absolute (operand
);
3315 return (is_immediate (operand
) || is_absolute (operand
))
3316 && operand
->exp
.X_add_number
== 16;
3318 /* Allow st0 or st1 instead of a numeric. */
3319 return is_absolute (operand
) || is_immediate (operand
) ||
3320 strcasecmp ("st0", operand
->buf
) == 0 ||
3321 strcasecmp ("st1", operand
->buf
) == 0;
3324 return is_absolute (operand
) || is_immediate (operand
);
3326 return (is_immediate (operand
) || is_absolute (operand
))
3327 && operand
->exp
.X_add_number
>= 0 && operand
->exp
.X_add_number
< 16;
3329 /* Let this one catch out-of-range values. */
3330 return (is_immediate (operand
) || is_absolute (operand
))
3331 && operand
->exp
.X_add_number
!= 16;
3335 return is_absolute (operand
) || is_immediate (operand
);
3337 return is_immediate (operand
)
3338 && operand
->exp
.X_op
== O_constant
3339 && operand
->exp
.X_add_number
>= 0
3340 && operand
->exp
.X_add_number
< 256;
3343 /* Allow anything; assumes opcodes are ordered with Smem operands
3349 /* Just make sure it's an integer; check range later. */
3350 return is_immediate (operand
);
3352 return strcasecmp ("t", operand
->buf
) == 0 ||
3353 strcasecmp ("treg", operand
->buf
) == 0;
3355 return strcasecmp ("ts", operand
->buf
) == 0;
3357 return strcasecmp ("asm", operand
->buf
) == 0;
3359 return strcasecmp ("trn", operand
->buf
) == 0;
3361 return strcasecmp ("dp", operand
->buf
) == 0;
3363 return strcasecmp ("arp", operand
->buf
) == 0;
3370 operands_match (tic54x_insn
*insn
,
3371 struct opstruct
*operands
,
3373 const enum optype
*refoptype
,
3377 int op
= 0, refop
= 0;
3379 if (opcount
== 0 && minops
== 0)
3382 while (op
<= maxops
&& refop
<= maxops
)
3384 while (!is_type (&operands
[op
], OPTYPE (refoptype
[refop
])))
3386 /* Skip an optional template operand if it doesn't agree
3387 with the current operand. */
3388 if (refoptype
[refop
] & OPT
)
3399 /* Save the actual operand type for later use. */
3400 operands
[op
].type
= OPTYPE (refoptype
[refop
]);
3403 /* Have we matched them all yet? */
3408 /* If a later operand is *not* optional, no match. */
3409 if ((refoptype
[refop
] & OPT
) == 0)
3411 /* Flag any implicit default OP_DST operands so we know to add
3412 them explicitly when encoding the operand later. */
3413 if (OPTYPE (refoptype
[refop
]) == OP_DST
)
3414 insn
->using_default_dst
= 1;
3426 /* 16-bit direct memory address
3427 Explicit dmad operands are always in last word of insn (usually second
3428 word, but bumped to third if lk addressing is used)
3430 We allow *(dmad) notation because the TI assembler allows it.
3433 0 for 16-bit addresses
3434 1 for full 23-bit addresses
3435 2 for the upper 7 bits of a 23-bit address (LDX). */
3438 encode_dmad (tic54x_insn
*insn
, struct opstruct
*operand
, int xpc_code
)
3440 int op
= 1 + insn
->is_lkaddr
;
3442 /* Only allow *(dmad) expressions; all others are invalid. */
3443 if (is_indirect (operand
) && operand
->buf
[strlen (operand
->buf
) - 1] != ')')
3445 as_bad (_("Invalid dmad syntax '%s'"), operand
->buf
);
3449 insn
->opcode
[op
].addr_expr
= operand
->exp
;
3451 if (insn
->opcode
[op
].addr_expr
.X_op
== O_constant
)
3453 valueT value
= insn
->opcode
[op
].addr_expr
.X_add_number
;
3457 insn
->opcode
[0].word
&= 0xFF80;
3458 insn
->opcode
[0].word
|= (value
>> 16) & 0x7F;
3459 insn
->opcode
[1].word
= value
& 0xFFFF;
3461 else if (xpc_code
== 2)
3462 insn
->opcode
[op
].word
= (value
>> 16) & 0xFFFF;
3464 insn
->opcode
[op
].word
= value
;
3468 /* Do the fixup later; just store the expression. */
3469 insn
->opcode
[op
].word
= 0;
3470 insn
->opcode
[op
].r_nchars
= 2;
3472 if (amode
== c_mode
)
3473 insn
->opcode
[op
].r_type
= BFD_RELOC_TIC54X_16_OF_23
;
3474 else if (xpc_code
== 1)
3476 /* This relocation spans two words, so adjust accordingly. */
3477 insn
->opcode
[0].addr_expr
= operand
->exp
;
3478 insn
->opcode
[0].r_type
= BFD_RELOC_TIC54X_23
;
3479 insn
->opcode
[0].r_nchars
= 4;
3480 insn
->opcode
[0].unresolved
= 1;
3481 /* It's really 2 words, but we want to stop encoding after the
3482 first, since we must encode both words at once. */
3485 else if (xpc_code
== 2)
3486 insn
->opcode
[op
].r_type
= BFD_RELOC_TIC54X_MS7_OF_23
;
3488 insn
->opcode
[op
].r_type
= BFD_RELOC_TIC54X_16_OF_23
;
3490 insn
->opcode
[op
].unresolved
= 1;
3496 /* 7-bit direct address encoding. */
3499 encode_address (tic54x_insn
*insn
, struct opstruct
*operand
)
3501 /* Assumes that dma addresses are *always* in word 0 of the opcode. */
3502 insn
->opcode
[0].addr_expr
= operand
->exp
;
3504 if (operand
->exp
.X_op
== O_constant
)
3505 insn
->opcode
[0].word
|= (operand
->exp
.X_add_number
& 0x7F);
3508 if (operand
->exp
.X_op
== O_register
)
3509 as_bad (_("Use the .mmregs directive to use memory-mapped register names such as '%s'"), operand
->buf
);
3510 /* Do the fixup later; just store the expression. */
3511 insn
->opcode
[0].r_nchars
= 1;
3512 insn
->opcode
[0].r_type
= BFD_RELOC_TIC54X_PARTLS7
;
3513 insn
->opcode
[0].unresolved
= 1;
3520 encode_indirect (tic54x_insn
*insn
, struct opstruct
*operand
)
3525 if (insn
->is_lkaddr
)
3527 /* lk addresses always go in the second insn word. */
3528 mod
= ((TOUPPER (operand
->buf
[1]) == 'A') ? 12 :
3529 (operand
->buf
[1] == '(') ? 15 :
3530 (strchr (operand
->buf
, '%') != NULL
) ? 14 : 13);
3531 arf
= ((mod
== 12) ? operand
->buf
[3] - '0' :
3532 (mod
== 15) ? 0 : operand
->buf
[4] - '0');
3534 insn
->opcode
[1].addr_expr
= operand
->exp
;
3536 if (operand
->exp
.X_op
== O_constant
)
3537 insn
->opcode
[1].word
= operand
->exp
.X_add_number
;
3540 insn
->opcode
[1].word
= 0;
3541 insn
->opcode
[1].r_nchars
= 2;
3542 insn
->opcode
[1].r_type
= BFD_RELOC_TIC54X_16_OF_23
;
3543 insn
->opcode
[1].unresolved
= 1;
3546 else if (strncasecmp (operand
->buf
, "*sp (", 4) == 0)
3548 /* Stack offsets look the same as 7-bit direct addressing. */
3549 return encode_address (insn
, operand
);
3553 arf
= (TOUPPER (operand
->buf
[1]) == 'A' ?
3554 operand
->buf
[3] : operand
->buf
[4]) - '0';
3556 if (operand
->buf
[1] == '+')
3558 mod
= 3; /* *+ARx */
3559 if (insn
->tm
->flags
& FL_SMR
)
3560 as_warn (_("Address mode *+ARx is write-only. "
3561 "Results of reading are undefined."));
3563 else if (operand
->buf
[4] == '\0')
3565 else if (operand
->buf
[5] == '\0')
3566 mod
= (operand
->buf
[4] == '-' ? 1 : 2); /* *ARx+ / *ARx- */
3567 else if (operand
->buf
[6] == '\0')
3569 if (operand
->buf
[5] == '0')
3570 mod
= (operand
->buf
[4] == '-' ? 5 : 6); /* *ARx+0 / *ARx-0 */
3572 mod
= (operand
->buf
[4] == '-' ? 8 : 10);/* *ARx+% / *ARx-% */
3574 else if (TOUPPER (operand
->buf
[6]) == 'B')
3575 mod
= (operand
->buf
[4] == '-' ? 4 : 7); /* ARx+0B / *ARx-0B */
3576 else if (TOUPPER (operand
->buf
[6]) == '%')
3577 mod
= (operand
->buf
[4] == '-' ? 9 : 11); /* ARx+0% / *ARx - 0% */
3580 as_bad (_("Unrecognized indirect address format \"%s\""),
3586 insn
->opcode
[0].word
|= 0x80 | (mod
<< 3) | arf
;
3592 encode_integer (tic54x_insn
*insn
,
3593 struct opstruct
*operand
,
3597 unsigned short mask
)
3599 long parse
, integer
;
3601 insn
->opcode
[which
].addr_expr
= operand
->exp
;
3603 if (operand
->exp
.X_op
== O_constant
)
3605 parse
= operand
->exp
.X_add_number
;
3606 /* Hack -- fixup for 16-bit hex quantities that get converted positive
3607 instead of negative. */
3608 if ((parse
& 0x8000) && min
== -32768 && max
== 32767)
3609 integer
= (short) parse
;
3613 if (integer
>= min
&& integer
<= max
)
3615 insn
->opcode
[which
].word
|= (integer
& mask
);
3618 as_bad (_("Operand '%s' out of range (%d <= x <= %d)"),
3619 operand
->buf
, min
, max
);
3623 if (insn
->opcode
[which
].addr_expr
.X_op
== O_constant
)
3625 insn
->opcode
[which
].word
|=
3626 insn
->opcode
[which
].addr_expr
.X_add_number
& mask
;
3630 /* Do the fixup later; just store the expression. */
3631 bfd_reloc_code_real_type rtype
=
3632 (mask
== 0x1FF ? BFD_RELOC_TIC54X_PARTMS9
:
3633 mask
== 0xFFFF ? BFD_RELOC_TIC54X_16_OF_23
:
3634 mask
== 0x7F ? BFD_RELOC_TIC54X_PARTLS7
: BFD_RELOC_8
);
3635 int size
= (mask
== 0x1FF || mask
== 0xFFFF) ? 2 : 1;
3637 if (rtype
== BFD_RELOC_8
)
3638 as_bad (_("Error in relocation handling"));
3640 insn
->opcode
[which
].r_nchars
= size
;
3641 insn
->opcode
[which
].r_type
= rtype
;
3642 insn
->opcode
[which
].unresolved
= 1;
3652 encode_condition (tic54x_insn
*insn
, struct opstruct
*operand
)
3654 symbol
*cc
= (symbol
*) hash_find (cc_hash
, operand
->buf
);
3657 as_bad (_("Unrecognized condition code \"%s\""), operand
->buf
);
3660 #define CC_GROUP 0x40
3662 #define CATG_A1 0x07
3663 #define CATG_B1 0x30
3664 #define CATG_A2 0x30
3665 #define CATG_B2 0x0C
3666 #define CATG_C2 0x03
3667 /* Disallow group 1 conditions mixed with group 2 conditions
3668 if group 1, allow only one category A and one category B
3669 if group 2, allow only one each of category A, B, and C. */
3670 if (((insn
->opcode
[0].word
& 0xFF) != 0))
3672 if ((insn
->opcode
[0].word
& CC_GROUP
) != (cc
->value
& CC_GROUP
))
3674 as_bad (_("Condition \"%s\" does not match preceding group"),
3678 if (insn
->opcode
[0].word
& CC_GROUP
)
3680 if ((insn
->opcode
[0].word
& CC_ACC
) != (cc
->value
& CC_ACC
))
3682 as_bad (_("Condition \"%s\" uses a different accumulator from "
3683 "a preceding condition"),
3687 if ((insn
->opcode
[0].word
& CATG_A1
) && (cc
->value
& CATG_A1
))
3689 as_bad (_("Only one comparison conditional allowed"));
3692 if ((insn
->opcode
[0].word
& CATG_B1
) && (cc
->value
& CATG_B1
))
3694 as_bad (_("Only one overflow conditional allowed"));
3698 else if ( ((insn
->opcode
[0].word
& CATG_A2
) && (cc
->value
& CATG_A2
))
3699 || ((insn
->opcode
[0].word
& CATG_B2
) && (cc
->value
& CATG_B2
))
3700 || ((insn
->opcode
[0].word
& CATG_C2
) && (cc
->value
& CATG_C2
)))
3702 as_bad (_("Duplicate %s conditional"), operand
->buf
);
3707 insn
->opcode
[0].word
|= cc
->value
;
3712 encode_cc3 (tic54x_insn
*insn
, struct opstruct
*operand
)
3714 symbol
*cc3
= (symbol
*) hash_find (cc3_hash
, operand
->buf
);
3715 int value
= cc3
? cc3
->value
: operand
->exp
.X_add_number
<< 8;
3717 if ((value
& 0x0300) != value
)
3719 as_bad (_("Unrecognized condition code \"%s\""), operand
->buf
);
3722 insn
->opcode
[0].word
|= value
;
3727 encode_arx (tic54x_insn
*insn
, struct opstruct
*operand
)
3729 int arf
= strlen (operand
->buf
) >= 3 ? operand
->buf
[2] - '0' : -1;
3731 if (strncasecmp ("ar", operand
->buf
, 2) || arf
< 0 || arf
> 7)
3733 as_bad (_("Invalid auxiliary register (use AR0-AR7)"));
3736 insn
->opcode
[0].word
|= arf
;
3741 encode_cc2 (tic54x_insn
*insn
, struct opstruct
*operand
)
3743 symbol
*cc2
= (symbol
*) hash_find (cc2_hash
, operand
->buf
);
3747 as_bad (_("Unrecognized condition code \"%s\""), operand
->buf
);
3750 insn
->opcode
[0].word
|= cc2
->value
;
3755 encode_operand (tic54x_insn
*insn
, enum optype type
, struct opstruct
*operand
)
3757 int ext
= (insn
->tm
->flags
& FL_EXT
) != 0;
3759 if (type
== OP_MMR
&& operand
->exp
.X_op
!= O_constant
)
3761 /* Disallow long-constant addressing for memory-mapped addressing. */
3762 if (insn
->is_lkaddr
)
3764 as_bad (_("lk addressing modes are invalid for memory-mapped "
3765 "register addressing"));
3769 /* Warn about *+ARx when used with MMR operands. */
3770 if (strncasecmp (operand
->buf
, "*+ar", 4) == 0)
3772 as_warn (_("Address mode *+ARx is not allowed in memory-mapped "
3773 "register addressing. Resulting behavior is "
3783 /* 16-bit immediate value. */
3784 return encode_dmad (insn
, operand
, 0);
3786 if (TOUPPER (*operand
->buf
) == 'B')
3788 insn
->opcode
[ext
? (1 + insn
->is_lkaddr
) : 0].word
|= (1 << 9);
3789 if (insn
->using_default_dst
)
3790 insn
->opcode
[ext
? (1 + insn
->is_lkaddr
) : 0].word
|= (1 << 8);
3794 /* Make sure this agrees with the OP_DST operand. */
3795 if (!((TOUPPER (operand
->buf
[0]) == 'B') ^
3796 ((insn
->opcode
[0].word
& (1 << 8)) != 0)))
3798 as_bad (_("Destination accumulator for each part of this parallel "
3799 "instruction must be different"));
3805 if (TOUPPER (operand
->buf
[0]) == 'B')
3806 insn
->opcode
[ext
? (1 + insn
->is_lkaddr
) : 0].word
|= (1 << 8);
3811 int mod
= (operand
->buf
[4] == '\0' ? 0 : /* *arx */
3812 operand
->buf
[4] == '-' ? 1 : /* *arx- */
3813 operand
->buf
[5] == '\0' ? 2 : 3); /* *arx+, *arx+0% */
3814 int arf
= operand
->buf
[3] - '0' - 2;
3815 int code
= (mod
<< 2) | arf
;
3816 insn
->opcode
[0].word
|= (code
<< (type
== OP_Xmem
? 4 : 0));
3821 if (!is_indirect (operand
))
3822 return encode_address (insn
, operand
);
3825 return encode_indirect (insn
, operand
);
3827 return encode_dmad (insn
, operand
, 2);
3829 return encode_dmad (insn
, operand
, 1);
3832 return encode_dmad (insn
, operand
, 0);
3834 return encode_arx (insn
, operand
);
3839 int value
= operand
->exp
.X_add_number
;
3842 insn
->opcode
[0].word
|= value
;
3845 if (value
< 16 || value
> 24)
3847 as_bad (_("Memory mapped register \"%s\" out of range"),
3851 if (type
== OP_MMRX
)
3852 insn
->opcode
[0].word
|= (value
- 16) << 4;
3854 insn
->opcode
[0].word
|= (value
- 16);
3862 return encode_integer (insn
, operand
, ext
+ insn
->is_lkaddr
,
3865 return encode_integer (insn
, operand
, ext
+ insn
->is_lkaddr
,
3868 return encode_integer (insn
, operand
, 1 + insn
->is_lkaddr
,
3869 -32768, 32767, 0xFFFF);
3871 return encode_condition (insn
, operand
);
3873 return encode_cc2 (insn
, operand
);
3875 return encode_cc3 (insn
, operand
);
3877 return encode_integer (insn
, operand
, 0, 0, 15, 0xF);
3879 return encode_integer (insn
, operand
, 0, -128, 127, 0xFF);
3882 int value
= operand
->exp
.X_add_number
;
3884 if (value
< 1 || value
> 3)
3886 as_bad (_("Invalid operand (use 1, 2, or 3)"));
3889 code
= value
== 1 ? 0 : value
== 2 ? 0x2 : 0x1;
3890 insn
->opcode
[0].word
|= (code
<< 8);
3894 return encode_integer (insn
, operand
, 0, 0, 31, 0x1F);
3896 return encode_integer (insn
, operand
, 0, 0, 255, 0xFF);
3898 return encode_integer (insn
, operand
, 1 + insn
->is_lkaddr
,
3902 symbol
*sbit
= (symbol
*) hash_find (sbit_hash
, operand
->buf
);
3903 int value
= is_absolute (operand
) ?
3904 operand
->exp
.X_add_number
: (sbit
? sbit
->value
: -1);
3907 if (insn
->opcount
== 1)
3911 as_bad (_("A status register or status bit name is required"));
3914 /* Guess the register based on the status bit; "ovb" is the last
3915 status bit defined for st0. */
3916 if (sbit
> (symbol
*) hash_find (sbit_hash
, "ovb"))
3921 as_bad (_("Unrecognized status bit \"%s\""), operand
->buf
);
3924 insn
->opcode
[0].word
|= value
;
3925 insn
->opcode
[0].word
|= (reg
<< 9);
3929 if (strcasecmp (operand
->buf
, "st0") == 0
3930 || strcasecmp (operand
->buf
, "st1") == 0)
3932 insn
->opcode
[0].word
|=
3933 ((unsigned short) (operand
->buf
[2] - '0')) << 9;
3936 else if (operand
->exp
.X_op
== O_constant
3937 && (operand
->exp
.X_add_number
== 0
3938 || operand
->exp
.X_add_number
== 1))
3940 insn
->opcode
[0].word
|=
3941 ((unsigned short) (operand
->exp
.X_add_number
)) << 9;
3944 as_bad (_("Invalid status register \"%s\""), operand
->buf
);
3947 return encode_integer (insn
, operand
, 0, -16, 15, 0x1F);
3949 return encode_integer (insn
, operand
, 0, 0, 7, 0x7);
3951 return encode_integer (insn
, operand
, 0, 0, 0x1FF, 0x1FF);
3953 if (operand
->exp
.X_add_number
!= 1
3954 && operand
->exp
.X_add_number
!= 2)
3956 as_bad (_("Operand \"%s\" out of range (use 1 or 2)"), operand
->buf
);
3959 insn
->opcode
[0].word
|= (operand
->exp
.X_add_number
- 1) << 9;
3968 /* No encoding necessary. */
3978 emit_insn (tic54x_insn
*insn
)
3981 flagword oldflags
= bfd_get_section_flags (stdoutput
, now_seg
);
3982 flagword flags
= oldflags
| SEC_CODE
;
3984 if (! bfd_set_section_flags (stdoutput
, now_seg
, flags
))
3985 as_warn (_("error setting flags for \"%s\": %s"),
3986 bfd_section_name (stdoutput
, now_seg
),
3987 bfd_errmsg (bfd_get_error ()));
3989 for (i
= 0; i
< insn
->words
; i
++)
3991 int size
= (insn
->opcode
[i
].unresolved
3992 && insn
->opcode
[i
].r_type
== BFD_RELOC_TIC54X_23
) ? 4 : 2;
3993 char *p
= frag_more (size
);
3996 md_number_to_chars (p
, (valueT
) insn
->opcode
[i
].word
, 2);
3998 md_number_to_chars (p
, (valueT
) insn
->opcode
[i
].word
<< 16, 4);
4000 if (insn
->opcode
[i
].unresolved
)
4001 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
,
4002 insn
->opcode
[i
].r_nchars
, &insn
->opcode
[i
].addr_expr
,
4003 FALSE
, insn
->opcode
[i
].r_type
);
4007 /* Convert the operand strings into appropriate opcode values
4008 return the total number of words used by the instruction. */
4011 build_insn (tic54x_insn
*insn
)
4015 /* Only non-parallel instructions support lk addressing. */
4016 if (!(insn
->tm
->flags
& FL_PAR
))
4018 for (i
= 0; i
< insn
->opcount
; i
++)
4020 if ((OPTYPE (insn
->operands
[i
].type
) == OP_Smem
4021 || OPTYPE (insn
->operands
[i
].type
) == OP_Lmem
4022 || OPTYPE (insn
->operands
[i
].type
) == OP_Sind
)
4023 && strchr (insn
->operands
[i
].buf
, '(')
4024 /* Don't mistake stack-relative addressing for lk addressing. */
4025 && strncasecmp (insn
->operands
[i
].buf
, "*sp (", 4) != 0)
4027 insn
->is_lkaddr
= 1;
4028 insn
->lkoperand
= i
;
4033 insn
->words
= insn
->tm
->words
+ insn
->is_lkaddr
;
4035 insn
->opcode
[0].word
= insn
->tm
->opcode
;
4036 if (insn
->tm
->flags
& FL_EXT
)
4037 insn
->opcode
[1 + insn
->is_lkaddr
].word
= insn
->tm
->opcode2
;
4039 for (i
= 0; i
< insn
->opcount
; i
++)
4041 enum optype type
= insn
->operands
[i
].type
;
4043 if (!encode_operand (insn
, type
, &insn
->operands
[i
]))
4046 if (insn
->tm
->flags
& FL_PAR
)
4047 for (i
= 0; i
< insn
->paropcount
; i
++)
4049 enum optype partype
= insn
->paroperands
[i
].type
;
4051 if (!encode_operand (insn
, partype
, &insn
->paroperands
[i
]))
4061 optimize_insn (tic54x_insn
*insn
)
4063 /* Optimize some instructions, helping out the brain-dead programmer. */
4064 #define is_zero(op) ((op).exp.X_op == O_constant && (op).exp.X_add_number == 0)
4065 if (strcasecmp (insn
->tm
->name
, "add") == 0)
4067 if (insn
->opcount
> 1
4068 && is_accumulator (&insn
->operands
[insn
->opcount
- 2])
4069 && is_accumulator (&insn
->operands
[insn
->opcount
- 1])
4070 && strcasecmp (insn
->operands
[insn
->opcount
- 2].buf
,
4071 insn
->operands
[insn
->opcount
- 1].buf
) == 0)
4074 insn
->using_default_dst
= 1;
4078 /* Try to collapse if Xmem and shift count is zero. */
4079 if ((OPTYPE (insn
->tm
->operand_types
[0]) == OP_Xmem
4080 && OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHFT
4081 && is_zero (insn
->operands
[1]))
4082 /* Or if Smem, shift is zero or absent, and SRC == DST. */
4083 || (OPTYPE (insn
->tm
->operand_types
[0]) == OP_Smem
4084 && OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHIFT
4085 && is_type (&insn
->operands
[1], OP_SHIFT
)
4086 && is_zero (insn
->operands
[1]) && insn
->opcount
== 3))
4088 insn
->operands
[1] = insn
->operands
[2];
4093 else if (strcasecmp (insn
->tm
->name
, "ld") == 0)
4095 if (insn
->opcount
== 3 && insn
->operands
[0].type
!= OP_SRC
)
4097 if ((OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHIFT
4098 || OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHFT
)
4099 && is_zero (insn
->operands
[1])
4100 && (OPTYPE (insn
->tm
->operand_types
[0]) != OP_lk
4101 || (insn
->operands
[0].exp
.X_op
== O_constant
4102 && insn
->operands
[0].exp
.X_add_number
<= 255
4103 && insn
->operands
[0].exp
.X_add_number
>= 0)))
4105 insn
->operands
[1] = insn
->operands
[2];
4111 else if (strcasecmp (insn
->tm
->name
, "sth") == 0
4112 || strcasecmp (insn
->tm
->name
, "stl") == 0)
4114 if ((OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHIFT
4115 || OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHFT
)
4116 && is_zero (insn
->operands
[1]))
4118 insn
->operands
[1] = insn
->operands
[2];
4123 else if (strcasecmp (insn
->tm
->name
, "sub") == 0)
4125 if (insn
->opcount
> 1
4126 && is_accumulator (&insn
->operands
[insn
->opcount
- 2])
4127 && is_accumulator (&insn
->operands
[insn
->opcount
- 1])
4128 && strcasecmp (insn
->operands
[insn
->opcount
- 2].buf
,
4129 insn
->operands
[insn
->opcount
- 1].buf
) == 0)
4132 insn
->using_default_dst
= 1;
4136 if ( ((OPTYPE (insn
->tm
->operand_types
[0]) == OP_Smem
4137 && OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHIFT
)
4138 || (OPTYPE (insn
->tm
->operand_types
[0]) == OP_Xmem
4139 && OPTYPE (insn
->tm
->operand_types
[1]) == OP_SHFT
))
4140 && is_zero (insn
->operands
[1])
4141 && insn
->opcount
== 3)
4143 insn
->operands
[1] = insn
->operands
[2];
4151 /* Find a matching template if possible, and get the operand strings. */
4154 tic54x_parse_insn (tic54x_insn
*insn
, char *line
)
4156 insn
->tm
= (insn_template
*) hash_find (op_hash
, insn
->mnemonic
);
4159 as_bad (_("Unrecognized instruction \"%s\""), insn
->mnemonic
);
4163 insn
->opcount
= get_operands (insn
->operands
, line
);
4164 if (insn
->opcount
< 0)
4167 /* Check each variation of operands for this mnemonic. */
4168 while (insn
->tm
->name
&& strcasecmp (insn
->tm
->name
, insn
->mnemonic
) == 0)
4170 if (insn
->opcount
>= insn
->tm
->minops
4171 && insn
->opcount
<= insn
->tm
->maxops
4172 && operands_match (insn
, &insn
->operands
[0], insn
->opcount
,
4173 insn
->tm
->operand_types
,
4174 insn
->tm
->minops
, insn
->tm
->maxops
))
4176 /* SUCCESS! now try some optimizations. */
4177 if (optimize_insn (insn
))
4179 insn
->tm
= (insn_template
*) hash_find (op_hash
,
4188 as_bad (_("Unrecognized operand list '%s' for instruction '%s'"),
4189 line
, insn
->mnemonic
);
4193 /* We set this in start_line_hook, 'cause if we do a line replacement, we
4194 won't be able to see the next line. */
4195 static int parallel_on_next_line_hint
= 0;
4197 /* See if this is part of a parallel instruction
4198 Look for a subsequent line starting with "||". */
4201 next_line_shows_parallel (char *next_line
)
4203 /* Look for the second half. */
4204 while (ISSPACE (*next_line
))
4207 return (next_line
[0] == PARALLEL_SEPARATOR
4208 && next_line
[1] == PARALLEL_SEPARATOR
);
4212 tic54x_parse_parallel_insn_firstline (tic54x_insn
*insn
, char *line
)
4214 insn
->tm
= (insn_template
*) hash_find (parop_hash
, insn
->mnemonic
);
4217 as_bad (_("Unrecognized parallel instruction \"%s\""),
4222 while (insn
->tm
->name
&& strcasecmp (insn
->tm
->name
,
4223 insn
->mnemonic
) == 0)
4225 insn
->opcount
= get_operands (insn
->operands
, line
);
4226 if (insn
->opcount
< 0)
4228 if (insn
->opcount
== 2
4229 && operands_match (insn
, &insn
->operands
[0], insn
->opcount
,
4230 insn
->tm
->operand_types
, 2, 2))
4236 /* Didn't find a matching parallel; try for a normal insn. */
4240 /* Parse the second line of a two-line parallel instruction. */
4243 tic54x_parse_parallel_insn_lastline (tic54x_insn
*insn
, char *line
)
4245 int valid_mnemonic
= 0;
4247 insn
->paropcount
= get_operands (insn
->paroperands
, line
);
4248 while (insn
->tm
->name
&& strcasecmp (insn
->tm
->name
,
4249 insn
->mnemonic
) == 0)
4251 if (strcasecmp (insn
->tm
->parname
, insn
->parmnemonic
) == 0)
4255 if (insn
->paropcount
>= insn
->tm
->minops
4256 && insn
->paropcount
<= insn
->tm
->maxops
4257 && operands_match (insn
, insn
->paroperands
,
4259 insn
->tm
->paroperand_types
,
4260 insn
->tm
->minops
, insn
->tm
->maxops
))
4266 as_bad (_("Invalid operand (s) for parallel instruction \"%s\""),
4269 as_bad (_("Unrecognized parallel instruction combination \"%s || %s\""),
4270 insn
->mnemonic
, insn
->parmnemonic
);
4275 /* If quotes found, return copy of line up to closing quote;
4276 otherwise up until terminator.
4277 If it's a string, pass as-is; otherwise attempt substitution symbol
4278 replacement on the value. */
4281 subsym_get_arg (char *line
, const char *terminators
, char **str
, int nosub
)
4285 int is_string
= *line
== '"';
4286 int is_char
= ISDIGIT (*line
);
4290 while (ISDIGIT (*ptr
))
4293 *str
= xmemdup0 (line
, ptr
- line
);
4297 char *savedp
= input_line_pointer
;
4300 input_line_pointer
= ptr
;
4301 *str
= demand_copy_C_string (&len
);
4302 endp
= input_line_pointer
;
4303 input_line_pointer
= savedp
;
4305 /* Do forced substitutions if requested. */
4306 if (!nosub
&& **str
== ':')
4307 *str
= subsym_substitute (*str
, 1);
4311 const char *term
= terminators
;
4314 while (*ptr
&& *ptr
!= *term
)
4325 *str
= xmemdup0 (line
, ptr
- line
);
4326 /* Do simple substitution, if available. */
4327 if (!nosub
&& (value
= subsym_lookup (*str
, macro_level
)) != NULL
)
4334 /* Replace the given substitution string.
4335 We start at the innermost macro level, so that existing locals remain local
4336 Note: we're treating macro args identically to .var's; I don't know if
4337 that's compatible w/TI's assembler. */
4340 subsym_create_or_replace (char *name
, char *value
)
4344 for (i
= macro_level
; i
> 0; i
--)
4346 if (hash_find (subsym_hash
[i
], name
))
4348 hash_replace (subsym_hash
[i
], name
, value
);
4352 if (hash_find (subsym_hash
[0], name
))
4353 hash_replace (subsym_hash
[0], name
, value
);
4355 hash_insert (subsym_hash
[0], name
, value
);
4358 /* Look up the substitution string replacement for the given symbol.
4359 Start with the innermost macro substitution table given and work
4363 subsym_lookup (char *name
, int nest_level
)
4365 char *value
= hash_find (subsym_hash
[nest_level
], name
);
4367 if (value
|| nest_level
== 0)
4370 return subsym_lookup (name
, nest_level
- 1);
4373 /* Do substitution-symbol replacement on the given line (recursively).
4374 return the argument if no substitution was done
4376 Also look for built-in functions ($func (arg)) and local labels.
4378 If FORCED is set, look for forced substitutions of the form ':SYMBOL:'. */
4381 subsym_substitute (char *line
, int forced
)
4383 /* For each apparent symbol, see if it's a substitution symbol, and if so,
4384 replace it in the input. */
4385 char *replacement
; /* current replacement for LINE. */
4386 char *head
; /* Start of line. */
4387 char *ptr
; /* Current examination point. */
4388 int changed
= 0; /* Did we make a substitution? */
4389 int eval_line
= 0; /* Is this line a .eval/.asg statement? */
4390 int eval_symbol
= 0; /* Are we in the middle of the symbol for
4392 char *eval_end
= NULL
;
4394 int line_conditional
= 0;
4397 /* Work with a copy of the input line. */
4398 replacement
= xstrdup (line
);
4400 ptr
= head
= replacement
;
4402 /* Flag lines where we might need to replace a single '=' with two;
4403 GAS uses single '=' to assign macro args values, and possibly other
4404 places, so limit what we replace. */
4405 if (strstr (line
, ".if")
4406 || strstr (line
, ".elseif")
4407 || strstr (line
, ".break"))
4408 line_conditional
= 1;
4410 /* Watch out for .eval, so that we avoid doing substitution on the
4411 symbol being assigned a value. */
4412 if (strstr (line
, ".eval") || strstr (line
, ".asg"))
4415 /* If it's a macro definition, don't do substitution on the argument
4417 if (strstr (line
, ".macro"))
4420 while (!is_end_of_line
[(int) *ptr
])
4422 int current_char
= *ptr
;
4424 /* Need to update this since LINE may have been modified. */
4426 eval_end
= strrchr (ptr
, ',');
4428 /* Replace triple double quotes with bounding quote/escapes. */
4429 if (current_char
== '"' && ptr
[1] == '"' && ptr
[2] == '"')
4432 tmp
= strstr (ptr
+ 2, "\"\"\"");
4438 /* Replace a single '=' with a '==';
4439 for compatibility with older code only. */
4440 if (line_conditional
&& current_char
== '=')
4448 tmp
= concat (head
, "==", ptr
, (char *) NULL
);
4449 /* Continue examining after the '=='. */
4450 ptr
= tmp
+ strlen (head
) + 2;
4452 head
= replacement
= tmp
;
4456 /* Flag when we've reached the symbol part of .eval/.asg. */
4457 if (eval_line
&& ptr
>= eval_end
)
4460 /* For each apparent symbol, see if it's a substitution symbol, and if
4461 so, replace it in the input. */
4462 if ((forced
&& current_char
== ':')
4463 || (!forced
&& is_name_beginner (current_char
)))
4465 char *name
; /* Symbol to be replaced. */
4466 char *savedp
= input_line_pointer
;
4469 char *tail
; /* Rest of line after symbol. */
4471 /* Skip the colon. */
4475 input_line_pointer
= ptr
;
4476 c
= get_symbol_name (&name
);
4477 /* '?' is not normally part of a symbol, but it IS part of a local
4481 *input_line_pointer
++ = c
;
4482 c
= *input_line_pointer
;
4483 *input_line_pointer
= '\0';
4485 /* Avoid infinite recursion; if a symbol shows up a second time for
4486 substitution, leave it as is. */
4487 if (hash_find (subsym_recurse_hash
, name
) == NULL
)
4488 value
= subsym_lookup (name
, macro_level
);
4490 as_warn (_("%s symbol recursion stopped at "
4491 "second appearance of '%s'"),
4492 forced
? "Forced substitution" : "Substitution", name
);
4493 ptr
= tail
= input_line_pointer
;
4494 input_line_pointer
= savedp
;
4496 /* Check for local labels; replace them with the appropriate
4498 if ((*name
== '$' && ISDIGIT (name
[1]) && name
[2] == '\0')
4499 || name
[strlen (name
) - 1] == '?')
4501 /* Use an existing identifier for that label if, available, or
4502 create a new, unique identifier. */
4503 value
= hash_find (local_label_hash
[macro_level
], name
);
4507 char *namecopy
= xstrdup (name
);
4509 value
= strcpy (xmalloc (strlen (name
) + sizeof (digit
) + 1),
4512 value
[strlen (value
) - 1] = '\0';
4513 sprintf (digit
, ".%d", local_label_id
++);
4514 strcat (value
, digit
);
4515 hash_insert (local_label_hash
[macro_level
], namecopy
, value
);
4517 /* Indicate where to continue looking for substitutions. */
4520 /* Check for built-in subsym and math functions. */
4521 else if (value
!= NULL
&& *name
== '$')
4523 subsym_proc_entry
*entry
= (subsym_proc_entry
*) value
;
4524 math_proc_entry
*math_entry
= hash_find (math_hash
, name
);
4525 char *arg1
, *arg2
= NULL
;
4530 as_bad (_("Unrecognized substitution symbol function"));
4533 else if (*ptr
!= '(')
4535 as_bad (_("Missing '(' after substitution symbol function"));
4539 if (math_entry
!= NULL
)
4541 float farg1
, farg2
= 0;
4542 volatile float fresult
;
4544 farg1
= (float) strtod (ptr
, &ptr
);
4545 if (math_entry
->nargs
== 2)
4549 as_bad (_("Expecting second argument"));
4552 farg2
= (float) strtod (ptr
, &ptr
);
4554 fresult
= (*math_entry
->proc
) (farg1
, farg2
);
4555 value
= XNEWVEC (char, 128);
4556 if (math_entry
->int_return
)
4557 sprintf (value
, "%d", (int) fresult
);
4559 sprintf (value
, "%f", fresult
);
4562 as_bad (_("Extra junk in function call, expecting ')'"));
4565 /* Don't bother recursing; the replacement isn't a
4572 int arg_type
[2] = { *ptr
== '"' , 0 };
4573 int ismember
= !strcmp (entry
->name
, "$ismember");
4575 /* Parse one or two args, which must be a substitution
4576 symbol, string or a character-string constant. */
4577 /* For all functions, a string or substitution symbol may be
4578 used, with the following exceptions:
4579 firstch/lastch: 2nd arg must be character constant
4580 ismember: both args must be substitution symbols. */
4581 ptr
= subsym_get_arg (ptr
, ",)", &arg1
, ismember
);
4584 if (entry
->nargs
== 2)
4588 as_bad (_("Function expects two arguments"));
4591 /* Character constants are converted to numerics
4592 by the preprocessor. */
4593 arg_type
[1] = (ISDIGIT (*ptr
)) ? 2 : (*ptr
== '"');
4594 ptr
= subsym_get_arg (ptr
, ")", &arg2
, ismember
);
4596 /* Args checking. */
4597 if ((!strcmp (entry
->name
, "$firstch")
4598 || !strcmp (entry
->name
, "$lastch"))
4599 && arg_type
[1] != 2)
4601 as_bad (_("Expecting character constant argument"));
4605 && (arg_type
[0] != 0 || arg_type
[1] != 0))
4607 as_bad (_("Both arguments must be substitution symbols"));
4612 as_bad (_("Extra junk in function call, expecting ')'"));
4615 val
= (*entry
->proc
) (arg1
, arg2
);
4616 value
= XNEWVEC (char, 64);
4617 sprintf (value
, "%d", val
);
4619 /* Fix things up to replace the entire expression, not just the
4625 if (value
!= NULL
&& !eval_symbol
)
4627 /* Replace the symbol with its string replacement and
4628 continue. Recursively replace VALUE until either no
4629 substitutions are performed, or a substitution that has been
4630 previously made is encountered again.
4632 Put the symbol into the recursion hash table so we only
4633 try to replace a symbol once. */
4636 hash_insert (subsym_recurse_hash
, name
, name
);
4637 value
= subsym_substitute (value
, macro_level
> 0);
4638 hash_delete (subsym_recurse_hash
, name
, FALSE
);
4641 /* Temporarily zero-terminate where the symbol started. */
4647 /* Subscripted substitution symbol -- use just the
4648 indicated portion of the string; the description
4649 kinda indicates that forced substitution is not
4650 supposed to be recursive, but I'm not sure. */
4651 unsigned beg
, len
= 1; /* default to a single char */
4652 char *newval
= xstrdup (value
);
4654 savedp
= input_line_pointer
;
4655 input_line_pointer
= tail
+ 1;
4656 beg
= get_absolute_expression ();
4659 as_bad (_("Invalid subscript (use 1 to %d)"),
4660 (int) strlen (value
));
4663 if (*input_line_pointer
== ',')
4665 ++input_line_pointer
;
4666 len
= get_absolute_expression ();
4667 if (beg
+ len
> strlen (value
))
4669 as_bad (_("Invalid length (use 0 to %d"),
4670 (int) strlen (value
) - beg
);
4676 tail
= input_line_pointer
;
4679 as_bad (_("Missing ')' in subscripted substitution "
4680 "symbol expression"));
4684 input_line_pointer
= savedp
;
4690 tmp
= xmalloc (strlen (head
) + strlen (value
) +
4691 strlen (tail
+ 1) + 2);
4693 strcat (tmp
, value
);
4694 /* Make sure forced substitutions are properly terminated. */
4699 as_bad (_("Missing forced substitution terminator ':'"));
4705 /* Restore the character after the symbol end. */
4708 /* Continue examining after the replacement value. */
4709 ptr
= tmp
+ strlen (head
) + strlen (value
);
4711 head
= replacement
= tmp
;
4729 /* We use this to handle substitution symbols
4730 hijack input_line_pointer, replacing it with our substituted string.
4732 .sslist should enable listing the line after replacements are made...
4734 returns the new buffer limit. */
4737 tic54x_start_line_hook (void)
4740 char *replacement
= NULL
;
4742 /* Work with a copy of the input line, including EOL char. */
4743 endp
= input_line_pointer
;
4744 while (!is_end_of_line
[(int) *endp
++])
4746 line
= xmemdup0 (input_line_pointer
, endp
- input_line_pointer
);
4748 /* Scan ahead for parallel insns. */
4749 parallel_on_next_line_hint
= next_line_shows_parallel (endp
);
4751 /* If within a macro, first process forced replacements. */
4752 if (macro_level
> 0)
4753 replacement
= subsym_substitute (line
, 1);
4756 replacement
= subsym_substitute (replacement
, 0);
4758 if (replacement
!= line
)
4760 char *tmp
= replacement
;
4761 char *comment
= strchr (replacement
, ';');
4762 char endc
= replacement
[strlen (replacement
) - 1];
4764 /* Clean up the replacement; we'd prefer to have this done by the
4765 standard preprocessing equipment (maybe do_scrub_chars?)
4766 but for now, do a quick-and-dirty. */
4767 if (comment
!= NULL
)
4774 comment
= replacement
+ strlen (replacement
) - 1;
4776 /* Trim trailing whitespace. */
4777 while (ISSPACE (*comment
))
4784 /* Compact leading whitespace. */
4785 while (ISSPACE (tmp
[0]) && ISSPACE (tmp
[1]))
4788 input_line_pointer
= endp
;
4789 input_scrub_insert_line (tmp
);
4792 /* Keep track of whether we've done a substitution. */
4793 substitution_line
= 1;
4799 substitution_line
= 0;
4803 /* This is the guts of the machine-dependent assembler. STR points to a
4804 machine dependent instruction. This function is supposed to emit
4805 the frags/bytes it assembles to. */
4807 md_assemble (char *line
)
4809 static int repeat_slot
= 0;
4810 static int delay_slots
= 0; /* How many delay slots left to fill? */
4811 static int is_parallel
= 0;
4812 static tic54x_insn insn
;
4814 char *savedp
= input_line_pointer
;
4817 input_line_pointer
= line
;
4818 c
= get_symbol_name (&line
);
4822 if (address_mode_needs_set
)
4824 set_address_mode (amode
);
4825 address_mode_needs_set
= 0;
4838 strcpy (insn
.parmnemonic
, line
);
4839 lptr
= input_line_pointer
;
4841 input_line_pointer
= savedp
;
4843 if (tic54x_parse_parallel_insn_lastline (&insn
, lptr
))
4845 int words
= build_insn (&insn
);
4847 if (delay_slots
!= 0)
4849 if (words
> delay_slots
)
4851 as_bad (_("Instruction does not fit in available delay "
4852 "slots (%d-word insn, %d slots left)"),
4853 words
, delay_slots
);
4857 delay_slots
-= words
;
4863 memset (&insn
, 0, sizeof (insn
));
4864 strcpy (insn
.mnemonic
, line
);
4865 lptr
= input_line_pointer
;
4867 input_line_pointer
= savedp
;
4869 /* See if this line is part of a parallel instruction; if so, either this
4870 line or the next line will have the "||" specifier preceding the
4871 mnemonic, and we look for it in the parallel insn hash table. */
4872 if (strstr (line
, "||") != NULL
|| parallel_on_next_line_hint
)
4874 char *tmp
= strstr (line
, "||");
4878 if (tic54x_parse_parallel_insn_firstline (&insn
, lptr
))
4881 /* If the parallel part is on the same line, process it now,
4882 otherwise let the assembler pick up the next line for us. */
4885 while (ISSPACE (tmp
[2]))
4887 md_assemble (tmp
+ 2);
4892 as_bad (_("Unrecognized parallel instruction '%s'"), line
);
4897 if (tic54x_parse_insn (&insn
, lptr
))
4901 if ((insn
.tm
->flags
& FL_LP
)
4902 && cpu
!= V545LP
&& cpu
!= V546LP
)
4904 as_bad (_("Instruction '%s' requires an LP cpu version"),
4908 if ((insn
.tm
->flags
& FL_FAR
)
4909 && amode
!= far_mode
)
4911 as_bad (_("Instruction '%s' requires far mode addressing"),
4916 words
= build_insn (&insn
);
4918 /* Is this instruction in a delay slot? */
4921 if (words
> delay_slots
)
4923 as_warn (_("Instruction does not fit in available delay "
4924 "slots (%d-word insn, %d slots left). "
4925 "Resulting behavior is undefined."),
4926 words
, delay_slots
);
4930 /* Branches in delay slots are not allowed. */
4931 if (insn
.tm
->flags
& FL_BMASK
)
4933 as_warn (_("Instructions which cause PC discontinuity are not "
4934 "allowed in a delay slot. "
4935 "Resulting behavior is undefined."));
4937 delay_slots
-= words
;
4940 /* Is this instruction the target of a repeat? */
4943 if (insn
.tm
->flags
& FL_NR
)
4944 as_warn (_("'%s' is not repeatable. "
4945 "Resulting behavior is undefined."),
4947 else if (insn
.is_lkaddr
)
4948 as_warn (_("Instructions using long offset modifiers or absolute "
4949 "addresses are not repeatable. "
4950 "Resulting behavior is undefined."));
4954 /* Make sure we check the target of a repeat instruction. */
4955 if (insn
.tm
->flags
& B_REPEAT
)
4958 /* FIXME -- warn if repeat_slot == 1 at EOF. */
4960 /* Make sure we check our delay slots for validity. */
4961 if (insn
.tm
->flags
& FL_DELAY
)
4964 /* FIXME -- warn if delay_slots != 0 at EOF. */
4969 /* Do a final adjustment on the symbol table; in this case, make sure we have
4970 a ".file" symbol. */
4973 tic54x_adjust_symtab (void)
4975 if (symbol_rootP
== NULL
4976 || S_GET_STORAGE_CLASS (symbol_rootP
) != C_FILE
)
4979 const char * filename
= as_where (&lineno
);
4980 c_dot_file_symbol (filename
, 0);
4984 /* In order to get gas to ignore any | chars at the start of a line,
4985 this function returns true if a | is found in a line.
4986 This lets us process parallel instructions, which span two lines. */
4989 tic54x_unrecognized_line (int c
)
4991 return c
== PARALLEL_SEPARATOR
;
4994 /* Watch for local labels of the form $[0-9] and [_a-zA-Z][_a-zA-Z0-9]*?
4995 Encode their names so that only we see them and can map them to the
4997 FIXME -- obviously this isn't done yet. These locals still show up in the
5000 tic54x_define_label (symbolS
*sym
)
5002 /* Just in case we need this later; note that this is not necessarily the
5003 same thing as line_label...
5004 When aligning or assigning labels to fields, sometimes the label is
5005 assigned other than the address at which the label appears.
5006 FIXME -- is this really needed? I think all the proper label assignment
5007 is done in tic54x_cons. */
5008 last_label_seen
= sym
;
5011 /* Try to parse something that normal parsing failed at. */
5014 tic54x_undefined_symbol (char *name
)
5018 /* Not sure how to handle predefined symbols. */
5019 if ((sym
= (symbol
*) hash_find (cc_hash
, name
)) != NULL
||
5020 (sym
= (symbol
*) hash_find (cc2_hash
, name
)) != NULL
||
5021 (sym
= (symbol
*) hash_find (cc3_hash
, name
)) != NULL
||
5022 (sym
= (symbol
*) hash_find (misc_symbol_hash
, name
)) != NULL
||
5023 (sym
= (symbol
*) hash_find (sbit_hash
, name
)) != NULL
)
5025 return symbol_new (name
, reg_section
,
5026 (valueT
) sym
->value
,
5027 &zero_address_frag
);
5030 if ((sym
= (symbol
*) hash_find (reg_hash
, name
)) != NULL
||
5031 (sym
= (symbol
*) hash_find (mmreg_hash
, name
)) != NULL
||
5032 !strcasecmp (name
, "a") || !strcasecmp (name
, "b"))
5034 return symbol_new (name
, reg_section
,
5035 (valueT
) sym
? sym
->value
: 0,
5036 &zero_address_frag
);
5042 /* Parse a name in an expression before the expression parser takes a stab at
5046 tic54x_parse_name (char *name ATTRIBUTE_UNUSED
,
5047 expressionS
*expn ATTRIBUTE_UNUSED
)
5053 md_atof (int type
, char *literalP
, int *sizeP
)
5055 /* Target data is little-endian, but floats are stored
5056 big-"word"ian. ugh. */
5057 return ieee_md_atof (type
, literalP
, sizeP
, TRUE
);
5061 tc_gen_reloc (asection
*section
, fixS
*fixP
)
5064 bfd_reloc_code_real_type code
= fixP
->fx_r_type
;
5065 asymbol
*sym
= symbol_get_bfdsym (fixP
->fx_addsy
);
5067 rel
= XNEW (arelent
);
5068 rel
->sym_ptr_ptr
= XNEW (asymbol
*);
5069 *rel
->sym_ptr_ptr
= sym
;
5070 /* We assume that all rel->address are host byte offsets. */
5071 rel
->address
= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
5072 rel
->address
/= OCTETS_PER_BYTE
;
5073 rel
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
5074 if (!strcmp (sym
->name
, section
->name
))
5075 rel
->howto
+= HOWTO_BANK
;
5079 const char *name
= S_GET_NAME (fixP
->fx_addsy
);
5082 as_fatal ("Cannot generate relocation type for symbol %s, code %s",
5083 name
, bfd_get_reloc_code_name (code
));
5089 /* Handle cons expressions. */
5092 tic54x_cons_fix_new (fragS
*frag
, int where
, int octets
, expressionS
*expn
,
5093 bfd_reloc_code_real_type r
)
5098 as_bad (_("Unsupported relocation size %d"), octets
);
5099 r
= BFD_RELOC_TIC54X_16_OF_23
;
5102 r
= BFD_RELOC_TIC54X_16_OF_23
;
5105 /* TI assembler always uses this, regardless of addressing mode. */
5107 r
= BFD_RELOC_TIC54X_23
;
5109 /* We never want to directly generate this; this is provided for
5110 stabs support only. */
5114 fix_new_exp (frag
, where
, octets
, expn
, 0, r
);
5117 /* Attempt to simplify or even eliminate a fixup.
5118 To indicate that a fixup has been eliminated, set fixP->fx_done.
5120 If fixp->fx_addsy is non-NULL, we'll have to generate a reloc entry. */
5123 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
5125 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
5126 valueT val
= * valP
;
5128 switch (fixP
->fx_r_type
)
5131 as_fatal ("Bad relocation type: 0x%02x", fixP
->fx_r_type
);
5133 case BFD_RELOC_TIC54X_MS7_OF_23
:
5134 val
= (val
>> 16) & 0x7F;
5136 case BFD_RELOC_TIC54X_16_OF_23
:
5138 bfd_put_16 (stdoutput
, val
, buf
);
5139 /* Indicate what we're actually writing, so that we don't get warnings
5140 about exceeding available space. */
5141 *valP
= val
& 0xFFFF;
5143 case BFD_RELOC_TIC54X_PARTLS7
:
5144 bfd_put_16 (stdoutput
,
5145 (bfd_get_16 (stdoutput
, buf
) & 0xFF80) | (val
& 0x7F),
5147 /* Indicate what we're actually writing, so that we don't get warnings
5148 about exceeding available space. */
5151 case BFD_RELOC_TIC54X_PARTMS9
:
5152 /* TI assembler doesn't shift its encoding for relocatable files, and is
5153 thus incompatible with this implementation's relocatable files. */
5154 bfd_put_16 (stdoutput
,
5155 (bfd_get_16 (stdoutput
, buf
) & 0xFE00) | (val
>> 7),
5159 case BFD_RELOC_TIC54X_23
:
5160 bfd_put_32 (stdoutput
,
5161 (bfd_get_32 (stdoutput
, buf
) & 0xFF800000) | val
,
5166 if (fixP
->fx_addsy
== NULL
&& fixP
->fx_pcrel
== 0)
5170 /* This is our chance to record section alignment
5171 don't need to do anything here, since BFD does the proper encoding. */
5174 md_section_align (segT segment ATTRIBUTE_UNUSED
, valueT section_size
)
5176 return section_size
;
5180 md_pcrel_from (fixS
*fixP ATTRIBUTE_UNUSED
)
5185 /* Mostly little-endian, but longwords (4 octets) get MS word stored
5189 tic54x_number_to_chars (char *buf
, valueT val
, int n
)
5192 number_to_chars_littleendian (buf
, val
, n
);
5195 number_to_chars_littleendian (buf
, val
>> 16 , 2);
5196 number_to_chars_littleendian (buf
+ 2, val
& 0xFFFF, 2);
5201 tic54x_estimate_size_before_relax (fragS
*frag ATTRIBUTE_UNUSED
,
5202 segT seg ATTRIBUTE_UNUSED
)
5207 /* We use this to handle bit allocations which we couldn't handle before due
5208 to symbols being in different frags. return number of octets added. */
5211 tic54x_relax_frag (fragS
*frag
, long stretch ATTRIBUTE_UNUSED
)
5213 symbolS
*sym
= frag
->fr_symbol
;
5219 struct bit_info
*bi
= (struct bit_info
*) frag
->fr_opcode
;
5220 int bit_offset
= frag_bit_offset (frag_prev (frag
, bi
->seg
), bi
->seg
);
5221 int size
= S_GET_VALUE (sym
);
5222 fragS
*prev_frag
= bit_offset_frag (frag_prev (frag
, bi
->seg
), bi
->seg
);
5223 int available
= 16 - bit_offset
;
5225 if (symbol_get_frag (sym
) != &zero_address_frag
5226 || S_IS_COMMON (sym
)
5227 || !S_IS_DEFINED (sym
))
5228 as_bad_where (frag
->fr_file
, frag
->fr_line
,
5229 _("non-absolute value used with .space/.bes"));
5233 as_warn (_("negative value ignored in %s"),
5234 bi
->type
== TYPE_SPACE
? ".space" :
5235 bi
->type
== TYPE_BES
? ".bes" : ".field");
5237 frag
->tc_frag_data
= frag
->fr_fix
= 0;
5241 if (bi
->type
== TYPE_FIELD
)
5243 /* Bit fields of 16 or larger will have already been handled. */
5244 if (bit_offset
!= 0 && available
>= size
)
5246 char *p
= prev_frag
->fr_literal
;
5248 valueT value
= bi
->value
;
5249 value
<<= available
- size
;
5250 value
|= ((unsigned short) p
[1] << 8) | p
[0];
5251 md_number_to_chars (p
, value
, 2);
5252 if ((prev_frag
->tc_frag_data
+= size
) == 16)
5253 prev_frag
->tc_frag_data
= 0;
5255 symbol_set_frag (bi
->sym
, prev_frag
);
5256 /* This frag is no longer used. */
5257 growth
= -frag
->fr_fix
;
5259 frag
->tc_frag_data
= 0;
5263 char *p
= frag
->fr_literal
;
5265 valueT value
= bi
->value
<< (16 - size
);
5266 md_number_to_chars (p
, value
, 2);
5267 if ((frag
->tc_frag_data
= size
) == 16)
5268 frag
->tc_frag_data
= 0;
5274 if (bit_offset
!= 0 && bit_offset
< 16)
5276 if (available
>= size
)
5278 if ((prev_frag
->tc_frag_data
+= size
) == 16)
5279 prev_frag
->tc_frag_data
= 0;
5281 symbol_set_frag (bi
->sym
, prev_frag
);
5282 /* This frag is no longer used. */
5283 growth
= -frag
->fr_fix
;
5285 frag
->tc_frag_data
= 0;
5288 if (bi
->type
== TYPE_SPACE
&& bi
->sym
)
5289 symbol_set_frag (bi
->sym
, prev_frag
);
5292 growth
= (size
+ 15) / 16 * OCTETS_PER_BYTE
- frag
->fr_fix
;
5293 for (i
= 0; i
< growth
; i
++)
5294 frag
->fr_literal
[i
] = 0;
5295 frag
->fr_fix
= growth
;
5296 frag
->tc_frag_data
= size
% 16;
5297 /* Make sure any BES label points to the LAST word allocated. */
5298 if (bi
->type
== TYPE_BES
&& bi
->sym
)
5299 S_SET_VALUE (bi
->sym
, frag
->fr_fix
/ OCTETS_PER_BYTE
- 1);
5302 frag
->fr_symbol
= 0;
5303 frag
->fr_opcode
= 0;
5310 tic54x_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
5311 segT seg ATTRIBUTE_UNUSED
,
5314 /* Offset is in bytes. */
5315 frag
->fr_offset
= (frag
->fr_next
->fr_address
5317 - frag
->fr_fix
) / frag
->fr_var
;
5318 if (frag
->fr_offset
< 0)
5320 as_bad_where (frag
->fr_file
, frag
->fr_line
,
5321 _("attempt to .space/.bes backwards? (%ld)"),
5322 (long) frag
->fr_offset
);
5324 frag
->fr_type
= rs_space
;
5327 /* We need to avoid having labels defined for certain directives/pseudo-ops
5328 since once the label is defined, it's in the symbol table for good. TI
5329 syntax puts the symbol *before* the pseudo (which is kinda like MRI syntax,
5330 I guess, except I've never seen a definition of MRI syntax).
5332 Don't allow labels to start with '.' */
5335 tic54x_start_label (int nul_char
, int next_char
)
5339 /* If within .struct/.union, no auto line labels, please. */
5340 if (current_stag
!= NULL
)
5343 /* Disallow labels starting with "." */
5344 if (next_char
!= ':')
5346 char *label
= input_line_pointer
;
5348 while (!is_end_of_line
[(int) label
[-1]])
5352 as_bad (_("Invalid label '%s'"), label
);
5357 if (is_end_of_line
[(int) next_char
])
5360 rest
= input_line_pointer
;
5361 if (nul_char
== '"')
5363 while (ISSPACE (next_char
))
5364 next_char
= *++rest
;
5365 if (next_char
!= '.')
5368 /* Don't let colon () define a label for any of these... */
5369 return ((strncasecmp (rest
, ".tag", 4) != 0 || !ISSPACE (rest
[4]))
5370 && (strncasecmp (rest
, ".struct", 7) != 0 || !ISSPACE (rest
[7]))
5371 && (strncasecmp (rest
, ".union", 6) != 0 || !ISSPACE (rest
[6]))
5372 && (strncasecmp (rest
, ".macro", 6) != 0 || !ISSPACE (rest
[6]))
5373 && (strncasecmp (rest
, ".set", 4) != 0 || !ISSPACE (rest
[4]))
5374 && (strncasecmp (rest
, ".equ", 4) != 0 || !ISSPACE (rest
[4])));