1 /* tc-msp430.c -- Assembler code for the Texas Instruments MSP430
3 Copyright (C) 2002 Free Software Foundation, Inc.
4 Contributed by Dmitry Diky <diwil@mail.ru>
6 This file is part of GAS, the GNU Assembler.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
28 #define PUSH_1X_WORKAROUND
31 #include "opcode/msp430.h"
32 #include "safe-ctype.h"
34 const char comment_chars
[] = ";";
35 const char line_comment_chars
[] = "#";
36 const char line_separator_chars
[] = "";
37 const char EXP_CHARS
[] = "eE";
38 const char FLT_CHARS
[] = "dD";
40 /* Handle long expressions. */
41 extern LITTLENUM_TYPE generic_bignum
[];
43 static struct hash_control
*msp430_hash
;
45 static unsigned int msp430_operands
46 PARAMS ((struct msp430_opcode_s
*, char *));
47 static int msp430_srcoperand
48 PARAMS ((struct msp430_operand_s
*, char *, int, int *));
49 static int msp430_dstoperand
50 PARAMS ((struct msp430_operand_s
*, char *, int));
51 static char *parse_exp
52 PARAMS ((char *, expressionS
*));
53 static inline char *skip_space
57 static void msp430_set_arch
59 static void show_mcu_list
61 static void del_spaces
73 #define MSP430_ISA_11 11
74 #define MSP430_ISA_12 12
75 #define MSP430_ISA_13 13
76 #define MSP430_ISA_14 14
77 #define MSP430_ISA_41 41
78 #define MSP430_ISA_31 31
79 #define MSP430_ISA_32 32
80 #define MSP430_ISA_33 33
81 #define MSP430_ISA_110 110
82 #define MSP430_ISA_43 43
83 #define MSP430_ISA_44 44
84 #define MSP430_ISA_15 15
85 #define MSP430_ISA_16 16
87 #define CHECK_RELOC_MSP430 ((imm_op || byte_op)?BFD_RELOC_MSP430_16_BYTE:BFD_RELOC_MSP430_16)
88 #define CHECK_RELOC_MSP430_PCREL ((imm_op || byte_op)?BFD_RELOC_MSP430_16_PCREL_BYTE:BFD_RELOC_MSP430_16_PCREL)
90 static struct mcu_type_s mcu_types
[] =
92 {"msp1", MSP430_ISA_11
, bfd_mach_msp11
},
93 {"msp2", MSP430_ISA_14
, bfd_mach_msp14
},
94 {"msp430x110", MSP430_ISA_11
, bfd_mach_msp11
},
95 {"msp430x112", MSP430_ISA_11
, bfd_mach_msp11
},
96 {"msp430x122", MSP430_ISA_12
, bfd_mach_msp12
},
97 {"msp430x122", MSP430_ISA_12
, bfd_mach_msp12
},
98 {"msp430x1222",MSP430_ISA_12
, bfd_mach_msp12
},
99 {"msp430x123", MSP430_ISA_12
, bfd_mach_msp12
},
100 {"msp430x1232",MSP430_ISA_12
, bfd_mach_msp12
},
101 {"msp430x133", MSP430_ISA_13
, bfd_mach_msp13
},
102 {"msp430x135", MSP430_ISA_13
, bfd_mach_msp13
},
103 {"msp430x147", MSP430_ISA_14
, bfd_mach_msp14
},
104 {"msp430x148", MSP430_ISA_14
, bfd_mach_msp14
},
105 {"msp430x149", MSP430_ISA_14
, bfd_mach_msp14
},
106 {"msp430x412", MSP430_ISA_41
, bfd_mach_msp41
},
107 {"msp430x413", MSP430_ISA_41
, bfd_mach_msp41
},
108 {"msp430x311", MSP430_ISA_31
, bfd_mach_msp31
},
109 {"msp430x312", MSP430_ISA_31
, bfd_mach_msp31
},
110 {"msp430x313", MSP430_ISA_31
, bfd_mach_msp31
},
111 {"msp430x314", MSP430_ISA_31
, bfd_mach_msp31
},
112 {"msp430x315", MSP430_ISA_31
, bfd_mach_msp31
},
113 {"msp430x323", MSP430_ISA_32
, bfd_mach_msp32
},
114 {"msp430x325", MSP430_ISA_32
, bfd_mach_msp32
},
115 {"msp430x336", MSP430_ISA_33
, bfd_mach_msp33
},
116 {"msp430x337", MSP430_ISA_33
, bfd_mach_msp33
},
117 {"msp430x1101",MSP430_ISA_110
, bfd_mach_msp110
},
118 {"msp430x1111",MSP430_ISA_110
, bfd_mach_msp110
},
119 {"msp430x1121",MSP430_ISA_110
, bfd_mach_msp110
},
120 {"msp430x1331",MSP430_ISA_13
, bfd_mach_msp13
},
121 {"msp430x1351",MSP430_ISA_13
, bfd_mach_msp13
},
122 {"msp430x435", MSP430_ISA_43
, bfd_mach_msp43
},
123 {"msp430x436", MSP430_ISA_43
, bfd_mach_msp43
},
124 {"msp430x447", MSP430_ISA_44
, bfd_mach_msp44
},
125 {"msp430x448", MSP430_ISA_44
, bfd_mach_msp44
},
126 {"msp430x449", MSP430_ISA_44
, bfd_mach_msp44
},
127 {"msp430x167", MSP430_ISA_16
, bfd_mach_msp16
},
128 {"msp430x168", MSP430_ISA_16
, bfd_mach_msp16
},
129 {"msp430x169", MSP430_ISA_16
, bfd_mach_msp16
},
130 {"msp430x155", MSP430_ISA_15
, bfd_mach_msp15
},
131 {"msp430x156", MSP430_ISA_15
, bfd_mach_msp15
},
132 {"msp430x157", MSP430_ISA_15
, bfd_mach_msp15
},
138 static struct mcu_type_s default_mcu
=
139 { "msp430x11", MSP430_ISA_11
, bfd_mach_msp11
};
141 static struct mcu_type_s
*msp430_mcu
= &default_mcu
;
143 const pseudo_typeS md_pseudo_table
[] =
145 {"arch", msp430_set_arch
, 0},
149 #define OPTION_MMCU 'm'
151 const char *md_shortopts
= "m:";
153 struct option md_longopts
[] =
155 {"mmcu", required_argument
, NULL
, OPTION_MMCU
},
156 {NULL
, no_argument
, NULL
, 0}
159 size_t md_longopts_size
= sizeof (md_longopts
);
162 show_mcu_list (stream
)
167 fprintf (stream
, _("Known MCU names:\n"));
169 for (i
= 0; mcu_types
[i
].name
; i
++)
170 fprintf (stream
, _("\t %s\n"), mcu_types
[i
].name
);
172 fprintf (stream
, "\n");
176 md_show_usage (stream
)
180 _("MSP430 options:\n"
181 " -mmcu=[msp430-name] select microcontroller type\n"
182 " msp430x1101 msp430x1111 msp430x1121\n"
183 " msp430x1331 msp430x1351\n"
184 " msp430x1222 msp430x1232\n"
185 " msp430x311 msp430x312 msp430x313 msp430x314 msp430x315\n"
186 " msp430x323 msp430x325\n"
187 " msp430x336 msp430x337\n"
188 " msp430x412 msp430x413\n"
189 " msp430x110 msp430x112\n"
190 " msp430x122 msp430x123\n"
191 " msp430x133 msp430x135\n"
192 " msp430x147 msp430x148 msp430x149\n"
193 " msp430x167 msp430x168 msp430x169\n"
194 " msp430x155 msp430x156 msp430x157\n"
195 " msp430x447 msp430x448 msp430x449\n"
196 " msp430x435 msp430x436\n"));
198 show_mcu_list (stream
);
202 extract_word (char *from
, char *to
, int limit
)
208 /* Drop leading whitespace. */
209 from
= skip_space (from
);
212 /* Find the op code end. */
213 for (op_start
= op_end
= from
; *op_end
!= 0 && is_part_of_name (*op_end
);)
215 to
[size
++] = *op_end
++;
216 if (size
+ 1 >= limit
)
225 msp430_set_arch (dummy
)
226 int dummy ATTRIBUTE_UNUSED
;
228 char *str
= (char *) alloca (32); /* 32 for good measure. */
230 input_line_pointer
= extract_word (input_line_pointer
, str
, 32);
232 md_parse_option (OPTION_MMCU
, str
);
233 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, msp430_mcu
->mach
);
237 md_parse_option (c
, arg
)
246 for (i
= 0; mcu_types
[i
].name
; ++i
)
247 if (strcmp (mcu_types
[i
].name
, arg
) == 0)
250 if (!mcu_types
[i
].name
)
252 show_mcu_list (stderr
);
253 as_fatal (_("unknown MCU: %s\n"), arg
);
256 if (msp430_mcu
== &default_mcu
|| msp430_mcu
->mach
== mcu_types
[i
].mach
)
257 msp430_mcu
= &mcu_types
[i
];
259 as_fatal (_("redefinition of mcu type %s' to %s'"),
260 msp430_mcu
->name
, mcu_types
[i
].name
);
268 md_undefined_symbol (name
)
269 char *name ATTRIBUTE_UNUSED
;
283 /* Delete spaces from s: X ( r 1 2) => X(r12). */
295 while (ISSPACE (*m
) && *m
)
297 memmove (s
, m
, strlen (m
) + 1);
304 /* Extract one word from FROM and copy it to TO. Delimeters are ",;\n" */
307 extract_operand (char *from
, char *to
, int limit
)
311 /* Drop leading whitespace. */
312 from
= skip_space (from
);
314 while (size
< limit
&& *from
)
316 *(to
+ size
) = *from
;
317 if (*from
== ',' || *from
== ';' || *from
== '\n')
332 extract_cmd (char *from
, char *to
, int limit
)
336 while (*from
&& ! ISSPACE (*from
) && *from
!= '.' && limit
> size
)
338 *(to
+ size
) = *from
;
348 /* Turn a string in input_line_pointer into a floating point constant
349 of type TYPE, and store the appropriate bytes in *LITP. The number
350 of LITTLENUMS emitted is stored in *SIZEP. An error message is
351 returned, or NULL on OK. */
354 md_atof (type
, litP
, sizeP
)
360 LITTLENUM_TYPE words
[4];
361 LITTLENUM_TYPE
*wordP
;
374 return _("bad call to md_atof");
377 t
= atof_ieee (input_line_pointer
, type
, words
);
379 input_line_pointer
= t
;
381 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
383 /* This loop outputs the LITTLENUMs in REVERSE order. */
384 for (wordP
= words
+ prec
- 1; prec
--;)
386 md_number_to_chars (litP
, (valueT
) (*wordP
--), sizeof (LITTLENUM_TYPE
));
387 litP
+= sizeof (LITTLENUM_TYPE
);
394 md_convert_frag (abfd
, sec
, fragP
)
395 bfd
*abfd ATTRIBUTE_UNUSED
;
396 asection
*sec ATTRIBUTE_UNUSED
;
397 fragS
*fragP ATTRIBUTE_UNUSED
;
405 struct msp430_opcode_s
*opcode
;
406 msp430_hash
= hash_new ();
408 for (opcode
= msp430_opcodes
; opcode
->name
; opcode
++)
409 hash_insert (msp430_hash
, opcode
->name
, (char *) opcode
);
411 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, msp430_mcu
->mach
);
418 struct msp430_opcode_s
*opcode
;
422 str
= skip_space (str
); /* Skip leading spaces. */
423 str
= extract_cmd (str
, cmd
, sizeof (cmd
));
425 while (cmd
[i
] && i
< sizeof (cmd
))
427 char a
= tolower (cmd
[i
]);
434 as_bad (_("can't find opcode "));
438 opcode
= (struct msp430_opcode_s
*) hash_find (msp430_hash
, cmd
);
442 as_bad (_("unknown opcode `%s'"), cmd
);
447 char *__t
= input_line_pointer
;
448 msp430_operands (opcode
, str
);
449 input_line_pointer
= __t
;
453 /* Parse instruction operands.
454 Return binary opcode. */
457 msp430_operands (opcode
, line
)
458 struct msp430_opcode_s
*opcode
;
461 int bin
= opcode
->bin_opcode
; /* opcode mask. */
463 char l1
[MAX_OP_LEN
], l2
[MAX_OP_LEN
];
466 struct msp430_operand_s op1
, op2
;
468 static short ZEROS
= 0;
471 /* opcode is the one from opcodes table
472 line contains something like
477 /* Check if byte or word operation. */
478 if (*line
== '.' && tolower (*(line
+ 1)) == 'b')
480 bin
|= BYTE_OPERATION
;
487 while (! ISSPACE (*line
) && *line
)
490 if (opcode
->insn_opnumb
&& (!*line
|| *line
== '\n'))
492 as_bad (_("instruction %s requires %d operand(s)"),
493 opcode
->name
, opcode
->insn_opnumb
);
497 memset (l1
, 0, sizeof (l1
));
498 memset (l2
, 0, sizeof (l2
));
499 memset (&op1
, 0, sizeof (op1
));
500 memset (&op2
, 0, sizeof (op2
));
506 case 0: /* Emulated. */
507 switch (opcode
->insn_opnumb
)
510 /* Set/clear bits instructions. */
512 frag
= frag_more (__is
);
513 bfd_putl16 ((bfd_vma
) bin
, frag
);
516 /* Something which works with destination operand. */
517 line
= extract_operand (line
, l1
, sizeof (l1
));
518 res
= msp430_dstoperand (&op1
, l1
, opcode
->bin_opcode
);
522 bin
|= (op1
.reg
| (op1
.am
<< 7));
524 frag
= frag_more (2 * __is
);
525 where
= frag
- frag_now
->fr_literal
;
526 bfd_putl16 ((bfd_vma
) bin
, frag
);
528 if (op1
.mode
== OP_EXP
)
531 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2);
534 fix_new_exp (frag_now
, where
, 2,
535 &(op1
.exp
), FALSE
, CHECK_RELOC_MSP430
);
537 fix_new_exp (frag_now
, where
, 2,
538 &(op1
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
546 /* Shift instruction. */
547 line
= extract_operand (line
, l1
, sizeof (l1
));
548 strncpy (l2
, l1
, 16);
549 res
= msp430_srcoperand (&op1
, l1
, opcode
->bin_opcode
, &imm_op
);
550 res
+= msp430_dstoperand (&op2
, l2
, opcode
->bin_opcode
);
553 break; /* An error occured. All warnings were done before. */
555 bin
|= (op2
.reg
| (op1
.reg
<< 8) | (op1
.am
<< 4) | (op2
.am
<< 7));
557 __is
= 1 + op1
.ol
+ op2
.ol
; /* insn size in words. */
558 frag
= frag_more (2 * __is
);
559 where
= frag
- frag_now
->fr_literal
;
560 bfd_putl16 ((bfd_vma
) bin
, frag
);
562 if (op1
.mode
== OP_EXP
)
564 where
+= 2; /* Advance 'where' as we do not know _where_. */
565 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2);
567 if (op1
.reg
|| (op1
.reg
== 0 && op1
.am
== 3)) /* Not PC relative. */
568 fix_new_exp (frag_now
, where
, 2,
569 &(op1
.exp
), FALSE
, CHECK_RELOC_MSP430
);
571 fix_new_exp (frag_now
, where
, 2,
572 &(op1
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
575 if (op2
.mode
== OP_EXP
)
578 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2 + ((__is
== 3) ? 2 : 0));
580 if (op2
.reg
) /* Not PC relative. */
581 fix_new_exp (frag_now
, where
+ 2, 2,
582 &(op2
.exp
), FALSE
, CHECK_RELOC_MSP430
);
584 fix_new_exp (frag_now
, where
+ 2, 2,
585 &(op2
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
590 /* Branch instruction => mov dst, r0. */
591 line
= extract_operand (line
, l1
, sizeof (l1
));
593 res
= msp430_srcoperand (&op1
, l1
, opcode
->bin_opcode
, &imm_op
);
600 bin
|= ((op1
.reg
<< 8) | (op1
.am
<< 4));
602 frag
= frag_more (2 * __is
);
603 where
= frag
- frag_now
->fr_literal
;
604 bfd_putl16 ((bfd_vma
) bin
, frag
);
606 if (op1
.mode
== OP_EXP
)
609 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2);
611 if (op1
.reg
|| (op1
.reg
== 0 && op1
.am
== 3))
612 fix_new_exp (frag_now
, where
, 2,
613 &(op1
.exp
), FALSE
, CHECK_RELOC_MSP430
);
615 fix_new_exp (frag_now
, where
, 2,
616 &(op1
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
622 case 1: /* Format 1, double operand. */
623 line
= extract_operand (line
, l1
, sizeof (l1
));
624 line
= extract_operand (line
, l2
, sizeof (l2
));
625 res
= msp430_srcoperand (&op1
, l1
, opcode
->bin_opcode
, &imm_op
);
626 res
+= msp430_dstoperand (&op2
, l2
, opcode
->bin_opcode
);
629 break; /* Error occured. All warnings were done before. */
631 bin
|= (op2
.reg
| (op1
.reg
<< 8) | (op1
.am
<< 4) | (op2
.am
<< 7));
633 __is
= 1 + op1
.ol
+ op2
.ol
; /* insn size in words. */
634 frag
= frag_more (2 * __is
);
635 where
= frag
- frag_now
->fr_literal
;
636 bfd_putl16 ((bfd_vma
) bin
, frag
);
638 if (op1
.mode
== OP_EXP
)
640 where
+= 2; /* Advance where as we do not know _where_. */
641 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2);
643 if (op1
.reg
|| (op1
.reg
== 0 && op1
.am
== 3)) /* Not PC relative. */
644 fix_new_exp (frag_now
, where
, 2,
645 &(op1
.exp
), FALSE
, CHECK_RELOC_MSP430
);
647 fix_new_exp (frag_now
, where
, 2,
648 &(op1
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
651 if (op2
.mode
== OP_EXP
)
654 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2 + ((__is
== 3) ? 2 : 0));
656 if (op2
.reg
) /* Not PC relative. */
657 fix_new_exp (frag_now
, where
+ 2, 2,
658 &(op2
.exp
), FALSE
, CHECK_RELOC_MSP430
);
660 fix_new_exp (frag_now
, where
+ 2, 2,
661 &(op2
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
665 case 2: /* Single-operand mostly instr. */
666 if (opcode
->insn_opnumb
== 0)
668 /* reti instruction. */
669 frag
= frag_more (2);
670 bfd_putl16 ((bfd_vma
) bin
, frag
);
674 line
= extract_operand (line
, l1
, sizeof (l1
));
675 res
= msp430_srcoperand (&op1
, l1
, opcode
->bin_opcode
, &imm_op
);
677 break; /* Error in operand. */
679 bin
|= op1
.reg
| (op1
.am
<< 4);
681 frag
= frag_more (2 * __is
);
682 where
= frag
- frag_now
->fr_literal
;
683 bfd_putl16 ((bfd_vma
) bin
, frag
);
685 if (op1
.mode
== OP_EXP
)
687 bfd_putl16 ((bfd_vma
) ZEROS
, frag
+ 2);
689 if (op1
.reg
|| (op1
.reg
== 0 && op1
.am
== 3)) /* Not PC relative. */
690 fix_new_exp (frag_now
, where
+ 2, 2,
691 &(op1
.exp
), FALSE
, CHECK_RELOC_MSP430
);
693 fix_new_exp (frag_now
, where
+ 2, 2,
694 &(op1
.exp
), TRUE
, CHECK_RELOC_MSP430_PCREL
);
698 case 3: /* Conditional jumps instructions. */
699 line
= extract_operand (line
, l1
, sizeof (l1
));
710 frag
= frag_more (2); /* Instr size is 1 word. */
712 /* In order to handle something like:
716 jz 4 ; skip next 4 bytes
719 nop ; will jump here if r5 positive or zero
721 jCOND -n ;assumes jump n bytes backward:
731 jCOND $n ; jump from PC in either direction. */
733 if (exp
.X_op
== O_constant
)
735 int x
= exp
.X_add_number
;
739 as_warn (_("Even number required. Rounded to %d"), x
+ 1);
743 if ((*l1
== '$' && x
> 0) || x
< 0)
748 if (x
> 512 || x
< -511)
750 as_bad (_("Wrong displacement %d"), x
<< 1);
755 bfd_putl16 ((bfd_vma
) bin
, frag
);
757 else if (exp
.X_op
== O_symbol
&& *l1
!= '$')
759 where
= frag
- frag_now
->fr_literal
;
760 fix_new_exp (frag_now
, where
, 2,
761 &exp
, TRUE
, BFD_RELOC_MSP430_10_PCREL
);
763 bfd_putl16 ((bfd_vma
) bin
, frag
);
767 as_bad (_("instruction requires label sans '$'"));
773 ("instruction requires label or value in range -511:512"));
779 as_bad (_("instruction requires label"));
785 as_bad (_("Ilegal instruction or not implmented opcode."));
788 input_line_pointer
= line
;
793 msp430_dstoperand (op
, l
, bin
)
794 struct msp430_operand_s
*op
;
799 int ret
= msp430_srcoperand (op
, l
, bin
, &dummy
);
810 parse_exp (__tl
, &(op
->exp
));
811 if (op
->exp
.X_op
!= O_constant
|| op
->exp
.X_add_number
!= 0)
813 as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"),
823 ("this addressing mode is not applicable for destination operand"));
834 /* If this is a reg numb, str 't' must be a number from 0 - 15. */
836 if (strlen (t
) > 2 && *(t
+ 2) != '+')
841 if ((*t
< '0' || *t
> '9') && *t
!= '+')
854 msp430_srcoperand (op
, l
, bin
, imm_op
)
855 struct msp430_operand_s
*op
;
862 /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */
869 /* Check if there is:
870 llo(x) - least significant 16 bits, x &= 0xffff
871 lhi(x) - x = (x >> 16) & 0xffff,
872 hlo(x) - x = (x >> 32) & 0xffff,
873 hhi(x) - x = (x >> 48) & 0xffff
874 The value _MUST_ be constant expression: #hlo(1231231231). */
878 if (strncasecmp (h
, "#llo(", 5) == 0)
883 else if (strncasecmp (h
, "#lhi(", 5) == 0)
888 else if (strncasecmp (h
, "#hlo(", 5) == 0)
893 else if (strncasecmp (h
, "#hhi(", 5) == 0)
898 else if (strncasecmp (h
, "#lo(", 4) == 0)
903 else if (strncasecmp (h
, "#hi(", 4) == 0)
909 op
->reg
= 0; /* Reg PC. */
911 op
->ol
= 1; /* Immediate will follow an instruction. */
914 parse_exp (__tl
, &(op
->exp
));
915 if (op
->exp
.X_op
== O_constant
)
917 int x
= op
->exp
.X_add_number
;
922 op
->exp
.X_add_number
= x
;
924 else if (vshift
== 1)
926 x
= (x
>> 16) & 0xffff;
927 op
->exp
.X_add_number
= x
;
932 op
->exp
.X_add_number
= -1;
934 op
->exp
.X_add_number
= 0; /* Nothing left. */
935 x
= op
->exp
.X_add_number
;
938 if (op
->exp
.X_add_number
> 65535 || op
->exp
.X_add_number
< -32768)
940 as_bad (_("value %ld out of range. Use #lo() or #hi()"), x
);
944 /* Now check constants. */
945 /* Substitude register mode with a constant generator if applicable. */
947 x
= (short) x
; /* Extend sign. */
979 #ifdef PUSH_1X_WORKAROUND
981 && (msp430_mcu
->isa
== MSP430_ISA_11
982 || msp430_mcu
->isa
== MSP430_ISA_12
983 || msp430_mcu
->isa
== MSP430_ISA_13
984 || msp430_mcu
->isa
== MSP430_ISA_14
))
986 /* Remove warning as confusing.
987 as_warn(_("Hardware push bug workaround")); */
1000 #ifdef PUSH_1X_WORKAROUND
1002 && (msp430_mcu
->isa
== MSP430_ISA_11
1003 || msp430_mcu
->isa
== MSP430_ISA_12
1004 || msp430_mcu
->isa
== MSP430_ISA_13
1005 || msp430_mcu
->isa
== MSP430_ISA_14
))
1007 /* Remove warning as confusing.
1008 as_warn(_("Hardware push bug workaround")); */
1020 else if (op
->exp
.X_op
== O_symbol
)
1024 else if (op
->exp
.X_op
== O_big
)
1029 op
->exp
.X_op
= O_constant
;
1030 op
->exp
.X_add_number
= 0xffff & generic_bignum
[vshift
];
1031 x
= op
->exp
.X_add_number
;
1036 ("unknown expression in operand %s. use #llo() #lhi() #hlo() #hhi() "),
1086 as_bad (_("unknown operand %s"), l
);
1091 /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */
1096 op
->reg
= 2; /* reg 2 in absolute addr mode. */
1097 op
->am
= 1; /* mode As == 01 bin. */
1098 op
->ol
= 1; /* Immediate value followed by instruction. */
1100 parse_exp (__tl
, &(op
->exp
));
1102 if (op
->exp
.X_op
== O_constant
)
1104 int x
= op
->exp
.X_add_number
;
1105 if (x
> 65535 || x
< -32768)
1107 as_bad (_("value out of range: %d"), x
);
1111 else if (op
->exp
.X_op
== O_symbol
)
1116 as_bad (_("unknown expression in operand %s"), l
);
1122 /* Check if inderect register mode @Rn / postincrement @Rn+. */
1126 char *m
= strchr (l
, '+');
1130 as_bad (_("unknown addressing mode %s"), l
);
1135 if (*t
!= 'r' && *t
!= 'R')
1137 as_bad (_("unknown addressing mode %s"), l
);
1141 t
++; /* Points to the reg value. */
1145 as_bad (_("Bad register name r%s"), t
);
1153 *m
= 0; /* strip '+' */
1155 if (op
->reg
< 0 || op
->reg
> 15)
1157 as_bad (_("MSP430 does not have %d registers"), op
->reg
);
1164 /* Check if register indexed X(Rn). */
1167 char *h
= strrchr (l
, '(');
1168 char *m
= strrchr (l
, ')');
1177 as_bad (_("')' required"));
1184 /* Extract a register. */
1185 t
++; /* Advance pointer. */
1187 if (*t
!= 'r' && *t
!= 'R')
1190 ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"),
1197 if (op
->reg
> 9 || op
->reg
< 0)
1199 as_bad (_("unknown operator (r%s substituded as a register name"),
1206 op
->reg
= op
->reg
* 10;
1207 op
->reg
+= *t
- '0';
1211 as_bad (_("unknown operator %s"), l
);
1216 as_bad (_("r2 should not be used in indexed addressing mode"));
1220 if (*(t
+ 1) != ')')
1222 as_bad (_("unknown operator %s"), l
);
1227 /* Extract constant. */
1231 parse_exp (__tl
, &(op
->exp
));
1232 if (op
->exp
.X_op
== O_constant
)
1234 int x
= op
->exp
.X_add_number
;
1236 if (x
> 65535 || x
< -32768)
1238 as_bad (_("value out of range: %d"), x
);
1250 else if (op
->exp
.X_op
== O_symbol
)
1255 as_bad (_("unknown expression in operand %s"), l
);
1263 /* Register mode 'mov r1,r2'. */
1268 /* Operand should be a register. */
1269 if (*t
== 'r' || *t
== 'R')
1271 int x
= atoi (t
+ 1);
1273 if (check_reg (t
+ 1))
1276 if (x
< 0 || x
> 15)
1277 break; /* Symbolic mode. */
1288 /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */
1297 /* alpha/number underline dot for labels. */
1298 if (! ISALNUM (*t
) && *t
!= '_' && *t
!= '.')
1300 as_bad (_("unknown operand %s"), l
);
1307 op
->reg
= 0; /* PC relative... be careful. */
1311 parse_exp (__tl
, &(op
->exp
));
1317 as_bad (_("unknown addressing mode for operand %s"), l
);
1322 /* GAS will call this function for each section at the end of the assembly,
1323 to permit the CPU backend to adjust the alignment of a section. */
1326 md_section_align (seg
, addr
)
1330 int align
= bfd_get_section_alignment (stdoutput
, seg
);
1332 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
1335 /* If you define this macro, it should return the offset between the
1336 address of a PC relative fixup and the position from which the PC
1337 relative adjustment should be made. On many processors, the base
1338 of a PC relative instruction is the next instruction, so this
1339 macro would return the length of an instruction. */
1342 md_pcrel_from_section (fixp
, sec
)
1346 if (fixp
->fx_addsy
!= (symbolS
*) NULL
1347 && (!S_IS_DEFINED (fixp
->fx_addsy
)
1348 || (S_GET_SEGMENT (fixp
->fx_addsy
) != sec
)))
1351 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1354 /* GAS will call this for each fixup. It should store the correct
1355 value in the object file. */
1358 md_apply_fix3 (fixp
, valuep
, seg
)
1363 unsigned char *where
;
1367 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1372 else if (fixp
->fx_pcrel
)
1374 segT s
= S_GET_SEGMENT (fixp
->fx_addsy
);
1376 if (fixp
->fx_addsy
&& (s
== seg
|| s
== absolute_section
))
1378 value
= S_GET_VALUE (fixp
->fx_addsy
) + *valuep
;
1386 value
= fixp
->fx_offset
;
1388 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1390 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1392 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1397 /* We don't actually support subtracting a symbol. */
1398 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1399 _("expression too complex"));
1404 switch (fixp
->fx_r_type
)
1407 fixp
->fx_no_overflow
= 1;
1409 case BFD_RELOC_MSP430_10_PCREL
:
1415 /* Fetch the instruction, insert the fully resolved operand
1416 value, and stuff the instruction back again. */
1418 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1420 insn
= bfd_getl16 (where
);
1422 switch (fixp
->fx_r_type
)
1424 case BFD_RELOC_MSP430_10_PCREL
:
1426 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1427 _("odd address operand: %ld"), value
);
1429 /* Jumps are in words. */
1431 --value
; /* Correct PC. */
1433 if (value
< -512 || value
> 511)
1434 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1435 _("operand out of range: %ld"), value
);
1437 value
&= 0x3ff; /* get rid of extended sign */
1438 bfd_putl16 ((bfd_vma
) (value
| insn
), where
);
1441 case BFD_RELOC_MSP430_16_PCREL
:
1443 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1444 _("odd address operand: %ld"), value
);
1446 /* Nothing to be corrected here. */
1447 if (value
< -32768 || value
> 65536)
1448 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1449 _("operand out of range: %ld"), value
);
1451 value
&= 0xffff; /* Get rid of extended sign. */
1452 bfd_putl16 ((bfd_vma
) value
, where
);
1455 case BFD_RELOC_MSP430_16_PCREL_BYTE
:
1456 /* Nothing to be corrected here. */
1457 if (value
< -32768 || value
> 65536)
1458 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1459 _("operand out of range: %ld"), value
);
1461 value
&= 0xffff; /* Get rid of extended sign. */
1462 bfd_putl16 ((bfd_vma
) value
, where
);
1466 bfd_putl16 ((bfd_vma
) value
, where
);
1469 case BFD_RELOC_MSP430_16
:
1471 case BFD_RELOC_MSP430_16_BYTE
:
1473 bfd_putl16 ((bfd_vma
) value
, where
);
1477 as_fatal (_("line %d: unknown relocation type: 0x%x"),
1478 fixp
->fx_line
, fixp
->fx_r_type
);
1484 fixp
->fx_addnumber
= value
;
1489 /* A `BFD_ASSEMBLER' GAS will call this to generate a reloc. GAS
1490 will pass the resulting reloc to `bfd_install_relocation'. This
1491 currently works poorly, as `bfd_install_relocation' often does the
1492 wrong thing, and instances of `tc_gen_reloc' have been written to
1493 work around the problems, which in turns makes it difficult to fix
1494 `bfd_install_relocation'. */
1496 /* If while processing a fixup, a reloc really needs to be created
1497 then it is done here. */
1500 tc_gen_reloc (seg
, fixp
)
1501 asection
*seg ATTRIBUTE_UNUSED
;
1506 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1508 reloc
->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
1509 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
1511 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1512 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1513 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1515 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1516 _("reloc %d not supported by object file format"),
1517 (int) fixp
->fx_r_type
);
1521 if (fixp
->fx_r_type
== BFD_RELOC_VTABLE_INHERIT
1522 || fixp
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
1523 reloc
->address
= fixp
->fx_offset
;
1525 reloc
->addend
= fixp
->fx_offset
;
1530 /* Parse ordinary expression. */
1537 input_line_pointer
= s
;
1539 if (op
->X_op
== O_absent
)
1540 as_bad (_("missing operand"));
1541 return input_line_pointer
;
1546 md_estimate_size_before_relax (fragp
, seg
)
1547 fragS
*fragp ATTRIBUTE_UNUSED
;
1548 asection
*seg ATTRIBUTE_UNUSED
;