1 /* tc-msp430.c -- Assembler code for the Texas Instruments MSP430
3 Copyright (C) 2002, 2003 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
64 #define MAX_OP_LEN 256
73 #define MSP430_ISA_11 11
74 #define MSP430_ISA_110 110
75 #define MSP430_ISA_12 12
76 #define MSP430_ISA_13 13
77 #define MSP430_ISA_14 14
78 #define MSP430_ISA_15 15
79 #define MSP430_ISA_16 16
80 #define MSP430_ISA_31 31
81 #define MSP430_ISA_32 32
82 #define MSP430_ISA_33 33
83 #define MSP430_ISA_41 41
84 #define MSP430_ISA_42 42
85 #define MSP430_ISA_43 43
86 #define MSP430_ISA_44 44
88 #define CHECK_RELOC_MSP430 ((imm_op || byte_op)?BFD_RELOC_MSP430_16_BYTE:BFD_RELOC_MSP430_16)
89 #define CHECK_RELOC_MSP430_PCREL ((imm_op || byte_op)?BFD_RELOC_MSP430_16_PCREL_BYTE:BFD_RELOC_MSP430_16_PCREL)
91 static struct mcu_type_s mcu_types[] =
93 {"msp1", MSP430_ISA_11, bfd_mach_msp11},
94 {"msp2", MSP430_ISA_14, bfd_mach_msp14},
95 {"msp430x110", MSP430_ISA_11, bfd_mach_msp11},
96 {"msp430x112", MSP430_ISA_11, bfd_mach_msp11},
97 {"msp430x1101",MSP430_ISA_110, bfd_mach_msp110},
98 {"msp430x1111",MSP430_ISA_110, bfd_mach_msp110},
99 {"msp430x1121",MSP430_ISA_110, bfd_mach_msp110},
100 {"msp430x1122",MSP430_ISA_11, bfd_mach_msp110},
101 {"msp430x1132",MSP430_ISA_11, bfd_mach_msp110},
103 {"msp430x122", MSP430_ISA_12, bfd_mach_msp12},
104 {"msp430x123", MSP430_ISA_12, bfd_mach_msp12},
105 {"msp430x1222",MSP430_ISA_12, bfd_mach_msp12},
106 {"msp430x1232",MSP430_ISA_12, bfd_mach_msp12},
108 {"msp430x133", MSP430_ISA_13, bfd_mach_msp13},
109 {"msp430x135", MSP430_ISA_13, bfd_mach_msp13},
110 {"msp430x1331",MSP430_ISA_13, bfd_mach_msp13},
111 {"msp430x1351",MSP430_ISA_13, bfd_mach_msp13},
112 {"msp430x147", MSP430_ISA_14, bfd_mach_msp14},
113 {"msp430x148", MSP430_ISA_14, bfd_mach_msp14},
114 {"msp430x149", MSP430_ISA_14, bfd_mach_msp14},
116 {"msp430x155", MSP430_ISA_15, bfd_mach_msp15},
117 {"msp430x156", MSP430_ISA_15, bfd_mach_msp15},
118 {"msp430x157", MSP430_ISA_15, bfd_mach_msp15},
119 {"msp430x167", MSP430_ISA_16, bfd_mach_msp16},
120 {"msp430x168", MSP430_ISA_16, bfd_mach_msp16},
121 {"msp430x169", MSP430_ISA_16, bfd_mach_msp16},
123 {"msp430x311", MSP430_ISA_31, bfd_mach_msp31},
124 {"msp430x312", MSP430_ISA_31, bfd_mach_msp31},
125 {"msp430x313", MSP430_ISA_31, bfd_mach_msp31},
126 {"msp430x314", MSP430_ISA_31, bfd_mach_msp31},
127 {"msp430x315", MSP430_ISA_31, bfd_mach_msp31},
128 {"msp430x323", MSP430_ISA_32, bfd_mach_msp32},
129 {"msp430x325", MSP430_ISA_32, bfd_mach_msp32},
130 {"msp430x336", MSP430_ISA_33, bfd_mach_msp33},
131 {"msp430x337", MSP430_ISA_33, bfd_mach_msp33},
133 {"msp430x412", MSP430_ISA_41, bfd_mach_msp41},
134 {"msp430x413", MSP430_ISA_41, bfd_mach_msp41},
136 {"msp430xE423", MSP430_ISA_42, bfd_mach_msp42},
137 {"msp430xE425", MSP430_ISA_42, bfd_mach_msp42},
138 {"msp430xE427", MSP430_ISA_42, bfd_mach_msp42},
139 {"msp430xW423", MSP430_ISA_42, bfd_mach_msp42},
140 {"msp430xW425", MSP430_ISA_42, bfd_mach_msp42},
141 {"msp430xW427", MSP430_ISA_42, bfd_mach_msp42},
143 {"msp430x435", MSP430_ISA_43, bfd_mach_msp43},
144 {"msp430x436", MSP430_ISA_43, bfd_mach_msp43},
145 {"msp430x437", MSP430_ISA_43, bfd_mach_msp43},
146 {"msp430x447", MSP430_ISA_44, bfd_mach_msp44},
147 {"msp430x448", MSP430_ISA_44, bfd_mach_msp44},
148 {"msp430x449", MSP430_ISA_44, bfd_mach_msp44},
154 static struct mcu_type_s default_mcu =
155 { "msp430x11", MSP430_ISA_11, bfd_mach_msp11 };
157 static struct mcu_type_s *msp430_mcu = &default_mcu;
159 const pseudo_typeS md_pseudo_table[] =
161 {"arch", msp430_set_arch, 0},
165 #define OPTION_MMCU 'm'
167 const char *md_shortopts = "m:";
169 struct option md_longopts[] =
171 {"mmcu", required_argument, NULL, OPTION_MMCU},
172 {NULL, no_argument, NULL, 0}
175 size_t md_longopts_size = sizeof (md_longopts);
178 show_mcu_list (stream)
183 fprintf (stream, _("Known MCU names:\n"));
185 for (i = 0; mcu_types[i].name; i++)
186 fprintf (stream, _("\t %s\n"), mcu_types[i].name);
188 fprintf (stream, "\n");
192 md_show_usage (stream)
196 _("MSP430 options:\n"
197 " -mmcu=[msp430-name] select microcontroller type\n"
198 " msp430x110 msp430x112\n"
199 " msp430x1101 msp430x1111\n"
200 " msp430x1121 msp430x1122 msp430x1132\n"
201 " msp430x122 msp430x123\n"
202 " msp430x1222 msp430x1232\n"
203 " msp430x133 msp430x135\n"
204 " msp430x1331 msp430x1351\n"
205 " msp430x147 msp430x148 msp430x149\n"
206 " msp430x155 msp430x156 msp430x157\n"
207 " msp430x167 msp430x168 msp430x169\n"
208 " msp430x311 msp430x312 msp430x313 msp430x314 msp430x315\n"
209 " msp430x323 msp430x325\n"
210 " msp430x336 msp430x337\n"
211 " msp430x412 msp430x413\n"
212 " msp430xE423 msp430xE425 msp430E427\n"
213 " msp430xW423 msp430xW425 msp430W427\n"
214 " msp430x435 msp430x436 msp430x437\n"
215 " msp430x447 msp430x448 msp430x449\n"));
217 show_mcu_list (stream);
221 extract_word (char *from, char *to, int limit)
227 /* Drop leading whitespace. */
228 from = skip_space (from);
231 /* Find the op code end. */
232 for (op_start = op_end = from; *op_end != 0 && is_part_of_name (*op_end);)
234 to[size++] = *op_end++;
235 if (size + 1 >= limit)
244 msp430_set_arch (dummy)
245 int dummy ATTRIBUTE_UNUSED;
247 char *str = (char *) alloca (32); /* 32 for good measure. */
249 input_line_pointer = extract_word (input_line_pointer, str, 32);
251 md_parse_option (OPTION_MMCU, str);
252 bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach);
256 md_parse_option (c, arg)
265 for (i = 0; mcu_types[i].name; ++i)
266 if (strcmp (mcu_types[i].name, arg) == 0)
269 if (!mcu_types[i].name)
271 show_mcu_list (stderr);
272 as_fatal (_("unknown MCU: %s\n"), arg);
275 if (msp430_mcu == &default_mcu || msp430_mcu->mach == mcu_types[i].mach)
276 msp430_mcu = &mcu_types[i];
278 as_fatal (_("redefinition of mcu type %s' to %s'"),
279 msp430_mcu->name, mcu_types[i].name);
287 md_undefined_symbol (name)
288 char *name ATTRIBUTE_UNUSED;
302 /* Delete spaces from s: X ( r 1 2) => X(r12). */
314 while (ISSPACE (*m) && *m)
316 memmove (s, m, strlen (m) + 1);
323 /* Extract one word from FROM and copy it to TO. Delimeters are ",;\n" */
326 extract_operand (char *from, char *to, int limit)
330 /* Drop leading whitespace. */
331 from = skip_space (from);
333 while (size < limit && *from)
335 *(to + size) = *from;
336 if (*from == ',' || *from == ';' || *from == '\n')
351 extract_cmd (char *from, char *to, int limit)
355 while (*from && ! ISSPACE (*from) && *from != '.' && limit > size)
357 *(to + size) = *from;
367 /* Turn a string in input_line_pointer into a floating point constant
368 of type TYPE, and store the appropriate bytes in *LITP. The number
369 of LITTLENUMS emitted is stored in *SIZEP. An error message is
370 returned, or NULL on OK. */
373 md_atof (type, litP, sizeP)
379 LITTLENUM_TYPE words[4];
380 LITTLENUM_TYPE *wordP;
393 return _("bad call to md_atof");
396 t = atof_ieee (input_line_pointer, type, words);
398 input_line_pointer = t;
400 *sizeP = prec * sizeof (LITTLENUM_TYPE);
402 /* This loop outputs the LITTLENUMs in REVERSE order. */
403 for (wordP = words + prec - 1; prec--;)
405 md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
406 litP += sizeof (LITTLENUM_TYPE);
413 md_convert_frag (abfd, sec, fragP)
414 bfd *abfd ATTRIBUTE_UNUSED;
415 asection *sec ATTRIBUTE_UNUSED;
416 fragS *fragP ATTRIBUTE_UNUSED;
424 struct msp430_opcode_s *opcode;
425 msp430_hash = hash_new ();
427 for (opcode = msp430_opcodes; opcode->name; opcode++)
428 hash_insert (msp430_hash, opcode->name, (char *) opcode);
430 bfd_set_arch_mach (stdoutput, TARGET_ARCH, msp430_mcu->mach);
437 struct msp430_opcode_s *opcode;
441 str = skip_space (str); /* Skip leading spaces. */
442 str = extract_cmd (str, cmd, sizeof (cmd));
444 while (cmd[i] && i < sizeof (cmd))
446 char a = TOLOWER (cmd[i]);
453 as_bad (_("can't find opcode "));
457 opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd);
461 as_bad (_("unknown opcode `%s'"), cmd);
466 char *__t = input_line_pointer;
467 msp430_operands (opcode, str);
468 input_line_pointer = __t;
472 /* Parse instruction operands.
473 Return binary opcode. */
476 msp430_operands (opcode, line)
477 struct msp430_opcode_s *opcode;
480 int bin = opcode->bin_opcode; /* opcode mask. */
482 char l1[MAX_OP_LEN], l2[MAX_OP_LEN];
485 struct msp430_operand_s op1, op2;
487 static short ZEROS = 0;
490 /* opcode is the one from opcodes table
491 line contains something like
496 /* Check if byte or word operation. */
497 if (*line == '.' && TOLOWER (*(line + 1)) == 'b')
499 bin |= BYTE_OPERATION;
506 while (! ISSPACE (*line) && *line)
509 if (opcode->insn_opnumb && (!*line || *line == '\n'))
511 as_bad (_("instruction %s requires %d operand(s)"),
512 opcode->name, opcode->insn_opnumb);
516 memset (l1, 0, sizeof (l1));
517 memset (l2, 0, sizeof (l2));
518 memset (&op1, 0, sizeof (op1));
519 memset (&op2, 0, sizeof (op2));
525 case 0: /* Emulated. */
526 switch (opcode->insn_opnumb)
529 /* Set/clear bits instructions. */
531 frag = frag_more (__is);
532 bfd_putl16 ((bfd_vma) bin, frag);
535 /* Something which works with destination operand. */
536 line = extract_operand (line, l1, sizeof (l1));
537 res = msp430_dstoperand (&op1, l1, opcode->bin_opcode);
541 bin |= (op1.reg | (op1.am << 7));
543 frag = frag_more (2 * __is);
544 where = frag - frag_now->fr_literal;
545 bfd_putl16 ((bfd_vma) bin, frag);
547 if (op1.mode == OP_EXP)
550 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
553 fix_new_exp (frag_now, where, 2,
554 &(op1.exp), FALSE, CHECK_RELOC_MSP430);
556 fix_new_exp (frag_now, where, 2,
557 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
563 /* Shift instruction. */
564 line = extract_operand (line, l1, sizeof (l1));
565 strncpy (l2, l1, sizeof (l2));
566 l2[sizeof (l2) - 1] = '\0';
567 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
568 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode);
571 break; /* An error occured. All warnings were done before. */
573 bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
575 __is = 1 + op1.ol + op2.ol; /* insn size in words. */
576 frag = frag_more (2 * __is);
577 where = frag - frag_now->fr_literal;
578 bfd_putl16 ((bfd_vma) bin, frag);
580 if (op1.mode == OP_EXP)
582 where += 2; /* Advance 'where' as we do not know _where_. */
583 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
585 if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */
586 fix_new_exp (frag_now, where, 2,
587 &(op1.exp), FALSE, CHECK_RELOC_MSP430);
589 fix_new_exp (frag_now, where, 2,
590 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
593 if (op2.mode == OP_EXP)
596 bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0));
598 if (op2.reg) /* Not PC relative. */
599 fix_new_exp (frag_now, where + 2, 2,
600 &(op2.exp), FALSE, CHECK_RELOC_MSP430);
602 fix_new_exp (frag_now, where + 2, 2,
603 &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
608 /* Branch instruction => mov dst, r0. */
609 line = extract_operand (line, l1, sizeof (l1));
611 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
618 bin |= ((op1.reg << 8) | (op1.am << 4));
620 frag = frag_more (2 * __is);
621 where = frag - frag_now->fr_literal;
622 bfd_putl16 ((bfd_vma) bin, frag);
624 if (op1.mode == OP_EXP)
627 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
629 if (op1.reg || (op1.reg == 0 && op1.am == 3))
630 fix_new_exp (frag_now, where, 2,
631 &(op1.exp), FALSE, CHECK_RELOC_MSP430);
633 fix_new_exp (frag_now, where, 2,
634 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
640 case 1: /* Format 1, double operand. */
641 line = extract_operand (line, l1, sizeof (l1));
642 line = extract_operand (line, l2, sizeof (l2));
643 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
644 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode);
647 break; /* Error occured. All warnings were done before. */
649 bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
651 __is = 1 + op1.ol + op2.ol; /* insn size in words. */
652 frag = frag_more (2 * __is);
653 where = frag - frag_now->fr_literal;
654 bfd_putl16 ((bfd_vma) bin, frag);
656 if (op1.mode == OP_EXP)
658 where += 2; /* Advance where as we do not know _where_. */
659 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
661 if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */
662 fix_new_exp (frag_now, where, 2,
663 &(op1.exp), FALSE, CHECK_RELOC_MSP430);
665 fix_new_exp (frag_now, where, 2,
666 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
669 if (op2.mode == OP_EXP)
672 bfd_putl16 ((bfd_vma) ZEROS, frag + 2 + ((__is == 3) ? 2 : 0));
674 if (op2.reg) /* Not PC relative. */
675 fix_new_exp (frag_now, where + 2, 2,
676 &(op2.exp), FALSE, CHECK_RELOC_MSP430);
678 fix_new_exp (frag_now, where + 2, 2,
679 &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
683 case 2: /* Single-operand mostly instr. */
684 if (opcode->insn_opnumb == 0)
686 /* reti instruction. */
687 frag = frag_more (2);
688 bfd_putl16 ((bfd_vma) bin, frag);
692 line = extract_operand (line, l1, sizeof (l1));
693 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op);
695 break; /* Error in operand. */
697 bin |= op1.reg | (op1.am << 4);
699 frag = frag_more (2 * __is);
700 where = frag - frag_now->fr_literal;
701 bfd_putl16 ((bfd_vma) bin, frag);
703 if (op1.mode == OP_EXP)
705 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
707 if (op1.reg || (op1.reg == 0 && op1.am == 3)) /* Not PC relative. */
708 fix_new_exp (frag_now, where + 2, 2,
709 &(op1.exp), FALSE, CHECK_RELOC_MSP430);
711 fix_new_exp (frag_now, where + 2, 2,
712 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
716 case 3: /* Conditional jumps instructions. */
717 line = extract_operand (line, l1, sizeof (l1));
728 frag = frag_more (2); /* Instr size is 1 word. */
730 /* In order to handle something like:
734 jz 4 ; skip next 4 bytes
737 nop ; will jump here if r5 positive or zero
739 jCOND -n ;assumes jump n bytes backward:
749 jCOND $n ; jump from PC in either direction. */
751 if (exp.X_op == O_constant)
753 int x = exp.X_add_number;
757 as_warn (_("Even number required. Rounded to %d"), x + 1);
761 if ((*l1 == '$' && x > 0) || x < 0)
766 if (x > 512 || x < -511)
768 as_bad (_("Wrong displacement %d"), x << 1);
773 bfd_putl16 ((bfd_vma) bin, frag);
775 else if (exp.X_op == O_symbol && *l1 != '$')
777 where = frag - frag_now->fr_literal;
778 fix_new_exp (frag_now, where, 2,
779 &exp, TRUE, BFD_RELOC_MSP430_10_PCREL);
781 bfd_putl16 ((bfd_vma) bin, frag);
785 as_bad (_("instruction requires label sans '$'"));
791 ("instruction requires label or value in range -511:512"));
797 as_bad (_("instruction requires label"));
803 as_bad (_("Ilegal instruction or not implmented opcode."));
806 input_line_pointer = line;
811 msp430_dstoperand (op, l, bin)
812 struct msp430_operand_s *op;
817 int ret = msp430_srcoperand (op, l, bin, &dummy);
828 parse_exp (__tl, &(op->exp));
829 if (op->exp.X_op != O_constant || op->exp.X_add_number != 0)
831 as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"),
841 ("this addressing mode is not applicable for destination operand"));
852 /* If this is a reg numb, str 't' must be a number from 0 - 15. */
854 if (strlen (t) > 2 && *(t + 2) != '+')
859 if ((*t < '0' || *t > '9') && *t != '+')
872 msp430_srcoperand (op, l, bin, imm_op)
873 struct msp430_operand_s *op;
880 /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */
887 /* Check if there is:
888 llo(x) - least significant 16 bits, x &= 0xffff
889 lhi(x) - x = (x >> 16) & 0xffff,
890 hlo(x) - x = (x >> 32) & 0xffff,
891 hhi(x) - x = (x >> 48) & 0xffff
892 The value _MUST_ be constant expression: #hlo(1231231231). */
896 if (strncasecmp (h, "#llo(", 5) == 0)
901 else if (strncasecmp (h, "#lhi(", 5) == 0)
906 else if (strncasecmp (h, "#hlo(", 5) == 0)
911 else if (strncasecmp (h, "#hhi(", 5) == 0)
916 else if (strncasecmp (h, "#lo(", 4) == 0)
921 else if (strncasecmp (h, "#hi(", 4) == 0)
927 op->reg = 0; /* Reg PC. */
929 op->ol = 1; /* Immediate will follow an instruction. */
932 parse_exp (__tl, &(op->exp));
933 if (op->exp.X_op == O_constant)
935 int x = op->exp.X_add_number;
940 op->exp.X_add_number = x;
942 else if (vshift == 1)
944 x = (x >> 16) & 0xffff;
945 op->exp.X_add_number = x;
950 op->exp.X_add_number = -1;
952 op->exp.X_add_number = 0; /* Nothing left. */
953 x = op->exp.X_add_number;
956 if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768)
958 as_bad (_("value %ld out of range. Use #lo() or #hi()"), x);
962 /* Now check constants. */
963 /* Substitude register mode with a constant generator if applicable. */
965 x = (short) x; /* Extend sign. */
997 #ifdef PUSH_1X_WORKAROUND
1000 /* Remove warning as confusing.
1001 as_warn(_("Hardware push bug workaround")); */
1014 #ifdef PUSH_1X_WORKAROUND
1017 /* Remove warning as confusing.
1018 as_warn(_("Hardware push bug workaround")); */
1030 else if (op->exp.X_op == O_symbol)
1034 else if (op->exp.X_op == O_big)
1039 op->exp.X_op = O_constant;
1040 op->exp.X_add_number = 0xffff & generic_bignum[vshift];
1041 x = op->exp.X_add_number;
1046 ("unknown expression in operand %s. use #llo() #lhi() #hlo() #hhi() "),
1096 as_bad (_("unknown operand %s"), l);
1101 /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */
1106 op->reg = 2; /* reg 2 in absolute addr mode. */
1107 op->am = 1; /* mode As == 01 bin. */
1108 op->ol = 1; /* Immediate value followed by instruction. */
1110 parse_exp (__tl, &(op->exp));
1112 if (op->exp.X_op == O_constant)
1114 int x = op->exp.X_add_number;
1115 if (x > 65535 || x < -32768)
1117 as_bad (_("value out of range: %d"), x);
1121 else if (op->exp.X_op == O_symbol)
1126 as_bad (_("unknown expression in operand %s"), l);
1132 /* Check if inderect register mode @Rn / postincrement @Rn+. */
1136 char *m = strchr (l, '+');
1140 as_bad (_("unknown addressing mode %s"), l);
1145 if (*t != 'r' && *t != 'R')
1147 as_bad (_("unknown addressing mode %s"), l);
1151 t++; /* Points to the reg value. */
1155 as_bad (_("Bad register name r%s"), t);
1163 *m = 0; /* strip '+' */
1165 if (op->reg < 0 || op->reg > 15)
1167 as_bad (_("MSP430 does not have %d registers"), op->reg);
1174 /* Check if register indexed X(Rn). */
1177 char *h = strrchr (l, '(');
1178 char *m = strrchr (l, ')');
1187 as_bad (_("')' required"));
1194 /* Extract a register. */
1195 t++; /* Advance pointer. */
1197 if (*t != 'r' && *t != 'R')
1200 ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"),
1207 if (op->reg > 9 || op->reg < 0)
1209 as_bad (_("unknown operator (r%s substituded as a register name"),
1216 op->reg = op->reg * 10;
1217 op->reg += *t - '0';
1221 as_bad (_("unknown operator %s"), l);
1226 as_bad (_("r2 should not be used in indexed addressing mode"));
1230 if (*(t + 1) != ')')
1232 as_bad (_("unknown operator %s"), l);
1237 /* Extract constant. */
1241 parse_exp (__tl, &(op->exp));
1242 if (op->exp.X_op == O_constant)
1244 int x = op->exp.X_add_number;
1246 if (x > 65535 || x < -32768)
1248 as_bad (_("value out of range: %d"), x);
1260 else if (op->exp.X_op == O_symbol)
1265 as_bad (_("unknown expression in operand %s"), l);
1273 /* Register mode 'mov r1,r2'. */
1278 /* Operand should be a register. */
1279 if (*t == 'r' || *t == 'R')
1281 int x = atoi (t + 1);
1283 if (check_reg (t + 1))
1286 if (x < 0 || x > 15)
1287 break; /* Symbolic mode. */
1298 /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */
1307 /* alpha/number underline dot for labels. */
1308 if (! ISALNUM (*t) && *t != '_' && *t != '.')
1310 as_bad (_("unknown operand %s"), l);
1317 op->reg = 0; /* PC relative... be careful. */
1321 parse_exp (__tl, &(op->exp));
1327 as_bad (_("unknown addressing mode for operand %s"), l);
1332 /* GAS will call this function for each section at the end of the assembly,
1333 to permit the CPU backend to adjust the alignment of a section. */
1336 md_section_align (seg, addr)
1340 int align = bfd_get_section_alignment (stdoutput, seg);
1342 return ((addr + (1 << align) - 1) & (-1 << align));
1345 /* If you define this macro, it should return the offset between the
1346 address of a PC relative fixup and the position from which the PC
1347 relative adjustment should be made. On many processors, the base
1348 of a PC relative instruction is the next instruction, so this
1349 macro would return the length of an instruction. */
1352 md_pcrel_from_section (fixp, sec)
1356 if (fixp->fx_addsy != (symbolS *) NULL
1357 && (!S_IS_DEFINED (fixp->fx_addsy)
1358 || (S_GET_SEGMENT (fixp->fx_addsy) != sec)))
1361 return fixp->fx_frag->fr_address + fixp->fx_where;
1364 /* GAS will call this for each fixup. It should store the correct
1365 value in the object file. */
1368 md_apply_fix3 (fixp, valuep, seg)
1373 unsigned char *where;
1377 if (fixp->fx_addsy == (symbolS *) NULL)
1382 else if (fixp->fx_pcrel)
1384 segT s = S_GET_SEGMENT (fixp->fx_addsy);
1386 if (fixp->fx_addsy && (s == seg || s == absolute_section))
1388 value = S_GET_VALUE (fixp->fx_addsy) + *valuep;
1396 value = fixp->fx_offset;
1398 if (fixp->fx_subsy != (symbolS *) NULL)
1400 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
1402 value -= S_GET_VALUE (fixp->fx_subsy);
1407 /* We don't actually support subtracting a symbol. */
1408 as_bad_where (fixp->fx_file, fixp->fx_line,
1409 _("expression too complex"));
1414 switch (fixp->fx_r_type)
1417 fixp->fx_no_overflow = 1;
1419 case BFD_RELOC_MSP430_10_PCREL:
1425 /* Fetch the instruction, insert the fully resolved operand
1426 value, and stuff the instruction back again. */
1428 where = fixp->fx_frag->fr_literal + fixp->fx_where;
1430 insn = bfd_getl16 (where);
1432 switch (fixp->fx_r_type)
1434 case BFD_RELOC_MSP430_10_PCREL:
1436 as_bad_where (fixp->fx_file, fixp->fx_line,
1437 _("odd address operand: %ld"), value);
1439 /* Jumps are in words. */
1441 --value; /* Correct PC. */
1443 if (value < -512 || value > 511)
1444 as_bad_where (fixp->fx_file, fixp->fx_line,
1445 _("operand out of range: %ld"), value);
1447 value &= 0x3ff; /* get rid of extended sign */
1448 bfd_putl16 ((bfd_vma) (value | insn), where);
1451 case BFD_RELOC_MSP430_16_PCREL:
1453 as_bad_where (fixp->fx_file, fixp->fx_line,
1454 _("odd address operand: %ld"), value);
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);
1465 case BFD_RELOC_MSP430_16_PCREL_BYTE:
1466 /* Nothing to be corrected here. */
1467 if (value < -32768 || value > 65536)
1468 as_bad_where (fixp->fx_file, fixp->fx_line,
1469 _("operand out of range: %ld"), value);
1471 value &= 0xffff; /* Get rid of extended sign. */
1472 bfd_putl16 ((bfd_vma) value, where);
1476 bfd_putl16 ((bfd_vma) value, where);
1479 case BFD_RELOC_MSP430_16:
1481 case BFD_RELOC_MSP430_16_BYTE:
1483 bfd_putl16 ((bfd_vma) value, where);
1487 as_fatal (_("line %d: unknown relocation type: 0x%x"),
1488 fixp->fx_line, fixp->fx_r_type);
1494 fixp->fx_addnumber = value;
1499 /* A `BFD_ASSEMBLER' GAS will call this to generate a reloc. GAS
1500 will pass the resulting reloc to `bfd_install_relocation'. This
1501 currently works poorly, as `bfd_install_relocation' often does the
1502 wrong thing, and instances of `tc_gen_reloc' have been written to
1503 work around the problems, which in turns makes it difficult to fix
1504 `bfd_install_relocation'. */
1506 /* If while processing a fixup, a reloc really needs to be created
1507 then it is done here. */
1510 tc_gen_reloc (seg, fixp)
1511 asection *seg ATTRIBUTE_UNUSED;
1516 reloc = (arelent *) xmalloc (sizeof (arelent));
1518 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
1519 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1521 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1522 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
1523 if (reloc->howto == (reloc_howto_type *) NULL)
1525 as_bad_where (fixp->fx_file, fixp->fx_line,
1526 _("reloc %d not supported by object file format"),
1527 (int) fixp->fx_r_type);
1531 if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
1532 || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
1533 reloc->address = fixp->fx_offset;
1535 reloc->addend = fixp->fx_offset;
1540 /* Parse ordinary expression. */
1547 input_line_pointer = s;
1549 if (op->X_op == O_absent)
1550 as_bad (_("missing operand"));
1551 return input_line_pointer;
1556 md_estimate_size_before_relax (fragp, seg)
1557 fragS *fragp ATTRIBUTE_UNUSED;
1558 asection *seg ATTRIBUTE_UNUSED;