1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997 Free Software Foundation.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include "opcode/v850.h"
27 /* sign-extend a 16-bit number */
28 #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000)
30 /* Temporarily holds the reloc in a cons expression. */
31 static bfd_reloc_code_real_type hold_cons_reloc
;
33 /* Set to TRUE if we want to be pedantic about signed overflows. */
34 static boolean warn_signed_overflows
= FALSE
;
35 static boolean warn_unsigned_overflows
= FALSE
;
37 /* Indicates the target processor type. */
38 static int machine
= TARGET_MACHINE
;
41 /* Structure to hold information about predefined registers. */
48 /* Generic assembler global variables which must be defined by all targets. */
50 /* Characters which always start a comment. */
51 const char comment_chars
[] = "#";
53 /* Characters which start a comment at the beginning of a line. */
54 const char line_comment_chars
[] = ";#";
56 /* Characters which may be used to separate multiple commands on a
58 const char line_separator_chars
[] = ";";
60 /* Characters which are used to indicate an exponent in a floating
62 const char EXP_CHARS
[] = "eE";
64 /* Characters which mean that a number is a floating point constant,
66 const char FLT_CHARS
[] = "dD";
69 const relax_typeS md_relax_table
[] = {
71 {0x1fffff, -0x200000, 6, 0},
75 static segT sdata_section
= NULL
;
76 static segT tdata_section
= NULL
;
77 static segT zdata_section
= NULL
;
78 static segT sbss_section
= NULL
;
79 static segT tbss_section
= NULL
;
80 static segT zbss_section
= NULL
;
81 static segT rosdata_section
= NULL
;
82 static segT rozdata_section
= NULL
;
86 static unsigned long v850_insert_operand
87 PARAMS ((unsigned long insn
, const struct v850_operand
*operand
,
88 offsetT val
, char *file
, unsigned int line
));
92 #define MAX_INSN_FIXUPS (5)
97 bfd_reloc_code_real_type reloc
;
99 struct v850_fixup fixups
[MAX_INSN_FIXUPS
];
103 v850_sdata (int ignore
)
105 subseg_set (sdata_section
, (subsegT
) get_absolute_expression ());
107 demand_empty_rest_of_line ();
111 v850_tdata (int ignore
)
113 subseg_set (tdata_section
, (subsegT
) get_absolute_expression ());
115 demand_empty_rest_of_line ();
119 v850_zdata (int ignore
)
121 subseg_set (zdata_section
, (subsegT
) get_absolute_expression ());
123 demand_empty_rest_of_line ();
127 v850_sbss (int ignore
)
129 subseg_set (sbss_section
, (subsegT
) get_absolute_expression ());
131 demand_empty_rest_of_line ();
135 v850_tbss (int ignore
)
137 subseg_set (tbss_section
, (subsegT
) get_absolute_expression ());
139 demand_empty_rest_of_line ();
143 v850_zbss (int ignore
)
145 subseg_set (zbss_section
, (subsegT
) get_absolute_expression ());
147 demand_empty_rest_of_line ();
151 v850_rosdata (int ignore
)
153 subseg_set (rosdata_section
, (subsegT
) get_absolute_expression ());
155 demand_empty_rest_of_line ();
159 v850_rozdata (int ignore
)
161 subseg_set (rozdata_section
, (subsegT
) get_absolute_expression ());
163 demand_empty_rest_of_line ();
167 v850_section (int arg
)
172 for (ptr
= input_line_pointer
; * ptr
!= '\n' && * ptr
!= 0; ptr
++)
173 if (* ptr
== ',' && ptr
[1] == '.')
179 obj_elf_section (arg
);
185 v850_bss (int ignore
)
187 register int temp
= get_absolute_expression ();
189 obj_elf_section_change_hook();
191 subseg_set (bss_section
, (subsegT
) temp
);
193 demand_empty_rest_of_line ();
197 v850_offset (int ignore
)
199 int temp
= get_absolute_expression ();
201 temp
-= frag_now_fix();
204 (void) frag_more (temp
);
206 demand_empty_rest_of_line ();
209 /* The target specific pseudo-ops which we support. */
210 const pseudo_typeS md_pseudo_table
[] =
212 {"sdata", v850_sdata
, 0},
213 {"tdata", v850_tdata
, 0},
214 {"zdata", v850_zdata
, 0},
215 {"sbss", v850_sbss
, 0},
216 {"tbss", v850_tbss
, 0},
217 {"zbss", v850_zbss
, 0},
218 {"rosdata", v850_rosdata
, 0},
219 {"rozdata", v850_rozdata
, 0},
220 {"bss", v850_bss
, 0},
221 {"offset", v850_offset
, 0},
222 {"section", v850_section
, 0},
227 /* Opcode hash table. */
228 static struct hash_control
*v850_hash
;
230 /* This table is sorted. Suitable for searching by a binary search. */
231 static const struct reg_name pre_defined_registers
[] =
233 { "ep", 30 }, /* ep - element ptr */
234 { "gp", 4 }, /* gp - global ptr */
235 { "hp", 2 }, /* hp - handler stack ptr */
236 { "lp", 31 }, /* lp - link ptr */
269 { "sp", 3 }, /* sp - stack ptr */
270 { "tp", 5 }, /* tp - text ptr */
273 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
276 static const struct reg_name system_registers
[] =
278 /* start-sanitize-v850e */
284 /* end-sanitize-v850e */
292 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
294 static const struct reg_name cc_names
[] =
319 #define CC_NAME_CNT (sizeof(cc_names) / sizeof(struct reg_name))
321 /* reg_name_search does a binary search of the given register table
322 to see if "name" is a valid regiter name. Returns the register
323 number from the array on success, or -1 on failure. */
326 reg_name_search (regs
, regcount
, name
)
327 const struct reg_name
* regs
;
331 int middle
, low
, high
;
339 middle
= (low
+ high
) / 2;
340 cmp
= strcasecmp (name
, regs
[middle
].name
);
346 return regs
[middle
].value
;
353 /* Summary of register_name().
355 * in: Input_line_pointer points to 1st char of operand.
357 * out: A expressionS.
358 * The operand may have been a register: in this case, X_op == O_register,
359 * X_add_number is set to the register number, and truth is returned.
360 * Input_line_pointer->(next non-blank) char after operand, or is in
361 * its original state.
364 register_name (expressionP
)
365 expressionS
* expressionP
;
372 /* Find the spelling of the operand */
373 start
= name
= input_line_pointer
;
375 c
= get_symbol_end ();
377 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
379 * input_line_pointer
= c
; /* put back the delimiting char */
381 /* look to see if it's in the register table */
384 expressionP
->X_op
= O_register
;
385 expressionP
->X_add_number
= reg_number
;
387 /* make the rest nice */
388 expressionP
->X_add_symbol
= NULL
;
389 expressionP
->X_op_symbol
= NULL
;
395 /* reset the line as if we had not done anything */
396 input_line_pointer
= start
;
402 /* Summary of system_register_name().
404 * in: Input_line_pointer points to 1st char of operand.
406 * out: A expressionS.
407 * The operand may have been a register: in this case, X_op == O_register,
408 * X_add_number is set to the register number, and truth is returned.
409 * Input_line_pointer->(next non-blank) char after operand, or is in
410 * its original state.
413 system_register_name (expressionP
, accept_numbers
)
414 expressionS
* expressionP
;
415 boolean accept_numbers
;
422 /* Find the spelling of the operand */
423 start
= name
= input_line_pointer
;
425 c
= get_symbol_end ();
426 reg_number
= reg_name_search (system_registers
, SYSREG_NAME_CNT
, name
);
428 * input_line_pointer
= c
; /* put back the delimiting char */
433 input_line_pointer
= start
; /* reset input_line pointer */
435 if (isdigit (* input_line_pointer
))
436 reg_number
= strtol (input_line_pointer
, & input_line_pointer
, 10);
438 /* Make sure that the register number is allowable. */
441 /* start-sanitize-v850e */
444 /* end-sanitize-v850e */
451 /* look to see if it's in the register table */
454 expressionP
->X_op
= O_register
;
455 expressionP
->X_add_number
= reg_number
;
457 /* make the rest nice */
458 expressionP
->X_add_symbol
= NULL
;
459 expressionP
->X_op_symbol
= NULL
;
465 /* reset the line as if we had not done anything */
466 input_line_pointer
= start
;
472 /* Summary of cc_name().
474 * in: Input_line_pointer points to 1st char of operand.
476 * out: A expressionS.
477 * The operand may have been a register: in this case, X_op == O_register,
478 * X_add_number is set to the register number, and truth is returned.
479 * Input_line_pointer->(next non-blank) char after operand, or is in
480 * its original state.
483 cc_name (expressionP
)
484 expressionS
*expressionP
;
491 /* Find the spelling of the operand */
492 start
= name
= input_line_pointer
;
494 c
= get_symbol_end ();
495 reg_number
= reg_name_search (cc_names
, CC_NAME_CNT
, name
);
497 * input_line_pointer
= c
; /* put back the delimiting char */
499 /* look to see if it's in the register table */
502 expressionP
->X_op
= O_constant
;
503 expressionP
->X_add_number
= reg_number
;
505 /* make the rest nice */
506 expressionP
->X_add_symbol
= NULL
;
507 expressionP
->X_op_symbol
= NULL
;
513 /* reset the line as if we had not done anything */
514 input_line_pointer
= start
;
521 skip_white_space (void)
523 while ( * input_line_pointer
== ' '
524 || * input_line_pointer
== '\t')
525 ++ input_line_pointer
;
528 /* start-sanitize-v850e */
529 /* Summary of parse_register_list ().
531 * in: Input_line_pointer points to 1st char of a list of registers.
532 * insn is the partially constructed instruction.
533 * operand is the operand being inserted.
535 * out: True if the parse completed successfully, False otherwise.
536 * If the parse completes the correct bit fields in the
537 * instruction will be filled in.
539 * Parses register lists with the syntax:
547 * and also parses constant epxressions whoes bits indicate the
548 * registers in the lists. The LSB in the expression refers to
549 * the lowest numbered permissable register in the register list,
550 * and so on upwards. System registers are considered to be very
557 unsigned long * insn
,
558 const struct v850_operand
* operand
561 static int type1_regs
[ 32 ] = { 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
562 /* start-sanitize-v850eq */
563 static int type2_regs
[ 32 ] = { 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
564 static int type3_regs
[ 32 ] = { 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 };
565 /* end-sanitize-v850eq */
570 /* Select a register array to parse. */
571 switch (operand
->shift
)
573 case 0xffe00001: regs
= type1_regs
; break;
574 /* start-sanitize-v850eq */
575 case 0xfff8000f: regs
= type2_regs
; break;
576 case 0xfff8001f: regs
= type3_regs
; break;
577 /* end-sanitize-v850eq */
579 as_bad ("unknown operand shift: %x\n", operand
->shift
);
580 return "internal failure in parse_register_list";
585 /* If the expression starts with a curly brace it is a register list.
586 Otherwise it is a constant expression ,whoes bits indicate which
587 registers are to be included in the list. */
589 if (* input_line_pointer
!= '{')
597 if (exp
.X_op
!= O_constant
)
598 return "constant expression or register list expected";
600 /* start-sanitize-v850eq */
601 if (regs
== type1_regs
)
602 /* end-sanitize-v850eq */
604 if (exp
.X_add_number
& 0xFFFFF000)
605 return "high bits set in register list expression";
607 for (reg
= 20; reg
< 32; reg
++)
608 if (exp
.X_add_number
& (1 << (reg
- 20)))
610 for (i
= 0; i
< 32; i
++)
615 /* start-sanitize-v850eq */
616 else if (regs
== type2_regs
)
618 if (exp
.X_add_number
& 0xFFFE0000)
619 return "high bits set in register list expression";
621 for (reg
= 1; reg
< 16; reg
++)
622 if (exp
.X_add_number
& (1 << (reg
- 1)))
624 for (i
= 0; i
< 32; i
++)
629 if (exp
.X_add_number
& (1 << 15))
632 if (exp
.X_add_number
& (1 << 16))
635 else /* regs == type3_regs */
637 if (exp
.X_add_number
& 0xFFFE0000)
638 return "high bits set in register list expression";
640 for (reg
= 16; reg
< 32; reg
++)
641 if (exp
.X_add_number
& (1 << (reg
- 16)))
643 for (i
= 0; i
< 32; i
++)
648 if (exp
.X_add_number
& (1 << 16))
651 /* end-sanitize-v850eq */
656 input_line_pointer
++;
658 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
661 if (register_name (& exp
))
665 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
666 for (i
= 0; i
< 32; i
++)
668 if (regs
[ i
] == exp
.X_add_number
)
677 return "illegal register included in list";
680 else if (system_register_name (& exp
, true))
682 if (regs
== type1_regs
)
684 return "system registers cannot be included in list";
686 else if (exp
.X_add_number
== 5)
688 if (regs
== type2_regs
)
689 return "PSW cannot be included in list";
696 else if (* input_line_pointer
== '}')
698 input_line_pointer
++;
701 else if (* input_line_pointer
== ',')
703 input_line_pointer
++;
706 else if (* input_line_pointer
== '-')
708 /* We have encountered a range of registers: rX - rY */
713 ++ input_line_pointer
;
715 /* Get the second register in the range. */
716 if (! register_name (& exp2
))
718 return "second register should follow dash in register list";
719 exp2
.X_add_number
= exp
.X_add_number
;
722 /* Add the rest of the registers in the range. */
723 for (j
= exp
.X_add_number
+ 1; j
<= exp2
.X_add_number
; j
++)
727 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
728 for (i
= 0; i
< 32; i
++)
739 return "illegal register included in list";
753 /* end-sanitize-v850e */
755 CONST
char * md_shortopts
= "m:";
757 struct option md_longopts
[] =
759 {NULL
, no_argument
, NULL
, 0}
761 size_t md_longopts_size
= sizeof md_longopts
;
765 md_show_usage (stream
)
768 fprintf (stream
, "V850 options:\n");
769 fprintf (stream
, "\t-wsigned_overflow Warn if signed immediate values overflow\n");
770 fprintf (stream
, "\t-wunsigned_overflow Warn if unsigned immediate values overflow\n");
771 fprintf (stream
, "\t-mv850 The code is targeted at the v850\n");
772 /* start-sanitize-v850e */
773 fprintf (stream
, "\t-mv850e The code is targeted at the v850e\n");
774 /* end-sanitize-v850e */
775 /* start-sanitize-v850eq */
776 fprintf (stream
, "\t-mv850eq The code is targeted at the v850eq\n");
777 /* end-sanitize-v850eq */
781 md_parse_option (c
, arg
)
788 if (strcmp (arg
, "signed_overflow") == 0)
790 warn_signed_overflows
= TRUE
;
793 else if (strcmp (arg
, "unsigned_overflow") == 0)
795 warn_unsigned_overflows
= TRUE
;
801 if (strcmp (arg
, "v850") == 0)
806 /* start-sanitize-v850e */
807 else if (strcmp (arg
, "v850e") == 0)
809 machine
= bfd_mach_v850e
;
812 /* end-sanitize-v850e */
813 /* start-sanitize-v850eq */
814 else if (strcmp (arg
, "v850eq") == 0)
816 machine
= bfd_mach_v850eq
;
819 /* end-sanitize-v850eq */
827 md_undefined_symbol (name
)
834 md_atof (type
, litp
, sizep
)
840 LITTLENUM_TYPE words
[4];
856 return "bad call to md_atof";
859 t
= atof_ieee (input_line_pointer
, type
, words
);
861 input_line_pointer
= t
;
865 for (i
= prec
- 1; i
>= 0; i
--)
867 md_number_to_chars (litp
, (valueT
) words
[i
], 2);
877 md_convert_frag (abfd
, sec
, fragP
)
882 subseg_change (sec
, 0);
883 if (fragP
->fr_subtype
== 0)
885 fix_new (fragP
, fragP
->fr_fix
, 2, fragP
->fr_symbol
,
886 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
);
890 else if (fragP
->fr_subtype
== 1)
892 /* Reverse the condition of the first branch. */
893 fragP
->fr_literal
[0] &= 0xf7;
894 /* Mask off all the displacement bits. */
895 fragP
->fr_literal
[0] &= 0x8f;
896 fragP
->fr_literal
[1] &= 0x07;
897 /* Now set the displacement bits so that we branch
898 around the unconditional branch. */
899 fragP
->fr_literal
[0] |= 0x30;
901 /* Now create the unconditional branch + fixup to the final
903 md_number_to_chars (&fragP
->fr_literal
[2], 0x00000780, 4);
904 fix_new (fragP
, fragP
->fr_fix
+ 2, 4, fragP
->fr_symbol
,
905 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
+ 1);
914 md_section_align (seg
, addr
)
918 int align
= bfd_get_section_alignment (stdoutput
, seg
);
919 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
925 char * prev_name
= "";
926 register const struct v850_opcode
* op
;
930 v850_hash
= hash_new();
932 /* Insert unique names into hash table. The V850 instruction set
933 has many identical opcode names that have different opcodes based
934 on the operands. This hash table then provides a quick index to
935 the first opcode with a particular name in the opcode table. */
940 if (strcmp (prev_name
, op
->name
))
942 prev_name
= (char *) op
->name
;
943 hash_insert (v850_hash
, op
->name
, (char *) op
);
948 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, machine
);
950 applicable
= bfd_applicable_section_flags (stdoutput
);
952 sdata_section
= subseg_new (".sdata", 0);
953 bfd_set_section_flags (stdoutput
, sdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
955 tdata_section
= subseg_new (".tdata", 0);
956 bfd_set_section_flags (stdoutput
, tdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
958 zdata_section
= subseg_new (".zdata", 0);
959 bfd_set_section_flags (stdoutput
, zdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
961 sbss_section
= subseg_new (".sbss", 0);
962 bfd_set_section_flags (stdoutput
, sbss_section
, applicable
& SEC_ALLOC
);
964 tbss_section
= subseg_new (".tbss", 0);
965 bfd_set_section_flags (stdoutput
, tbss_section
, applicable
& SEC_ALLOC
);
967 zbss_section
= subseg_new (".zbss", 0);
968 bfd_set_section_flags (stdoutput
, zbss_section
, applicable
& SEC_ALLOC
);
970 rosdata_section
= subseg_new (".rosdata", 0);
971 bfd_set_section_flags (stdoutput
, rosdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
973 rozdata_section
= subseg_new (".rozdata", 0);
974 bfd_set_section_flags (stdoutput
, rozdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
978 /* Warning: The code in this function relies upon the definitions
979 in the v850_operands[] array (defined in opcodes/v850-opc.c)
980 matching the hard coded values conatined herein. */
982 static bfd_reloc_code_real_type
983 v850_reloc_prefix (const struct v850_operand
* operand
)
985 boolean paren_skipped
= false;
988 /* Skip leading opening parenthesis. */
989 if (* input_line_pointer
== '(')
991 ++ input_line_pointer
;
992 paren_skipped
= true;
995 if (strncmp (input_line_pointer
, "hi0(", 4) == 0)
997 input_line_pointer
+= 3;
998 return BFD_RELOC_HI16
;
1000 if (strncmp (input_line_pointer
, "hi(", 3) == 0)
1002 input_line_pointer
+= 2;
1003 return BFD_RELOC_HI16_S
;
1005 if (strncmp (input_line_pointer
, "lo(", 3) == 0)
1007 input_line_pointer
+= 2;
1008 return BFD_RELOC_LO16
;
1011 if (strncmp (input_line_pointer
, "sdaoff(", 7) == 0)
1013 input_line_pointer
+= 6;
1015 if (operand
== NULL
) return BFD_RELOC_V850_SDA_16_16_OFFSET
;
1016 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_SDA_15_16_OFFSET
;
1017 /* start-sanitize-v850e */
1018 if (operand
->bits
== -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
;
1019 /* end-sanitize-v850e */
1021 assert (operand
->bits
== 16);
1022 assert (operand
->shift
== 16);
1024 return BFD_RELOC_V850_SDA_16_16_OFFSET
;
1027 if (strncmp (input_line_pointer
, "zdaoff(", 7) == 0)
1029 input_line_pointer
+= 6;
1031 if (operand
== NULL
) return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1032 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET
;
1033 /* start-sanitize-v850e */
1034 if (operand
->bits
== -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
;
1035 /* end-sanitize-v850e */
1037 assert (operand
->bits
== 16);
1038 assert (operand
->shift
== 16);
1040 return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1043 if (strncmp (input_line_pointer
, "tdaoff(", 7) == 0)
1045 input_line_pointer
+= 6;
1047 if (operand
== NULL
) return BFD_RELOC_V850_TDA_7_7_OFFSET
;
1048 if (operand
->bits
== 6 && operand
->shift
== 1) return BFD_RELOC_V850_TDA_6_8_OFFSET
;
1049 /* start-sanitize-v850e */
1050 if (operand
->bits
== 4 && operand
->insert
!= NULL
) return BFD_RELOC_V850_TDA_4_5_OFFSET
;
1051 if (operand
->bits
== 4 && operand
->insert
== NULL
) return BFD_RELOC_V850_TDA_4_4_OFFSET
;
1052 /* end-sanitize-v850e */
1054 assert (operand
->bits
== 7);
1056 return operand
->insert
!= NULL
? BFD_RELOC_V850_TDA_7_8_OFFSET
: BFD_RELOC_V850_TDA_7_7_OFFSET
;
1060 /* Restore skipped character. */
1061 -- input_line_pointer
;
1063 return BFD_RELOC_UNUSED
;
1071 char * start_of_operands
;
1072 struct v850_opcode
* opcode
;
1073 struct v850_opcode
* next_opcode
;
1074 const unsigned char * opindex_ptr
;
1078 unsigned long insn_size
;
1082 boolean extra_data_after_insn
= false;
1083 unsigned extra_data_len
;
1084 unsigned long extra_data
;
1085 char * saved_input_line_pointer
;
1087 /* Get the opcode. */
1088 for (s
= str
; *s
!= '\0' && ! isspace (*s
); s
++)
1094 /* find the first opcode with the proper name */
1095 opcode
= (struct v850_opcode
*)hash_find (v850_hash
, str
);
1098 as_bad ("Unrecognized opcode: `%s'", str
);
1099 ignore_rest_of_line ();
1104 while (isspace (* str
))
1107 start_of_operands
= str
;
1109 saved_input_line_pointer
= input_line_pointer
;
1113 const char * errmsg
= NULL
;
1119 insn
= opcode
->opcode
;
1120 extra_data_after_insn
= false;
1122 input_line_pointer
= str
= start_of_operands
;
1124 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1126 const struct v850_operand
* operand
;
1129 bfd_reloc_code_real_type reloc
;
1131 if (next_opindex
== 0)
1133 operand
= & v850_operands
[ * opindex_ptr
];
1137 operand
= & v850_operands
[ next_opindex
];
1143 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1146 if (operand
->flags
& V850_OPERAND_RELAX
)
1149 /* Gather the operand. */
1150 hold
= input_line_pointer
;
1151 input_line_pointer
= str
;
1153 /* fprintf (stderr, "operand: %s index = %d, opcode = %s\n", input_line_pointer, opindex_ptr - opcode->operands, opcode->name ); */
1155 /* lo(), hi(), hi0(), etc... */
1156 if ((reloc
= v850_reloc_prefix (operand
)) != BFD_RELOC_UNUSED
)
1160 if (ex
.X_op
== O_constant
)
1164 case BFD_RELOC_LO16
:
1166 /* Truncate, then sign extend the value. */
1167 ex
.X_add_number
= SEXT16 (ex
.X_add_number
);
1171 case BFD_RELOC_HI16
:
1173 /* Truncate, then sign extend the value. */
1174 ex
.X_add_number
= SEXT16 (ex
.X_add_number
>> 16);
1178 case BFD_RELOC_HI16_S
:
1180 /* Truncate, then sign extend the value. */
1181 int temp
= (ex
.X_add_number
>> 16) & 0xffff;
1183 temp
+= (ex
.X_add_number
>> 15) & 1;
1185 ex
.X_add_number
= SEXT16 (temp
);
1190 as_bad ( "AAARG -> unhandled constant reloc");
1194 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1199 if (fc
> MAX_INSN_FIXUPS
)
1200 as_fatal ("too many fixups");
1202 fixups
[ fc
].exp
= ex
;
1203 fixups
[ fc
].opindex
= * opindex_ptr
;
1204 fixups
[ fc
].reloc
= reloc
;
1212 if ((operand
->flags
& V850_OPERAND_REG
) != 0)
1214 if (!register_name (& ex
))
1216 errmsg
= "invalid register name";
1219 if ((operand
->flags
& V850_NOT_R0
)
1220 && ex
.X_add_number
== 0)
1222 errmsg
= "register r0 cannot be used here";
1225 else if ((operand
->flags
& V850_OPERAND_SRG
) != 0)
1227 if (!system_register_name (& ex
, true))
1229 errmsg
= "invalid system register name";
1232 else if ((operand
->flags
& V850_OPERAND_EP
) != 0)
1234 char * start
= input_line_pointer
;
1235 char c
= get_symbol_end ();
1237 if (strcmp (start
, "ep") != 0 && strcmp (start
, "r30") != 0)
1239 /* Put things back the way we found them. */
1240 *input_line_pointer
= c
;
1241 input_line_pointer
= start
;
1242 errmsg
= "expected EP register";
1246 *input_line_pointer
= c
;
1247 str
= input_line_pointer
;
1248 input_line_pointer
= hold
;
1250 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1254 else if ((operand
->flags
& V850_OPERAND_CC
) != 0)
1256 if (!cc_name (& ex
))
1258 errmsg
= "invalid condition code name";
1261 /* start-sanitize-v850e */
1262 else if (operand
->flags
& V850E_PUSH_POP
)
1264 errmsg
= parse_register_list (& insn
, operand
);
1266 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1267 ex
.X_op
= O_constant
;
1268 ex
.X_add_number
= 0;
1270 /* end-sanitize-v850e */
1271 /* start-sanitize-v850e */
1272 else if (operand
->flags
& V850E_IMMEDIATE16
)
1276 if (ex
.X_op
!= O_constant
)
1277 errmsg
= "constant expression expected";
1278 else if (ex
.X_add_number
& 0xffff0000)
1280 if (ex
.X_add_number
& 0xffff)
1281 errmsg
= "constant too big to fit into instruction";
1282 else if ((insn
& 0x001fffc0) == 0x00130780)
1283 ex
.X_add_number
>>= 16;
1285 errmsg
= "constant too big to fit into instruction";
1288 extra_data_after_insn
= true;
1290 extra_data
= ex
.X_add_number
;
1291 ex
.X_add_number
= 0;
1293 /* end-sanitize-v850e */
1294 /* start-sanitize-v850e */
1295 else if (operand
->flags
& V850E_IMMEDIATE32
)
1299 if (ex
.X_op
!= O_constant
)
1300 errmsg
= "constant expression expected";
1302 extra_data_after_insn
= true;
1304 extra_data
= ex
.X_add_number
;
1305 ex
.X_add_number
= 0;
1307 /* end-sanitize-v850e */
1308 else if (register_name (&ex
)
1309 && (operand
->flags
& V850_OPERAND_REG
) == 0)
1311 errmsg
= "syntax error: register not expected";
1313 else if (system_register_name (& ex
, false)
1314 && (operand
->flags
& V850_OPERAND_SRG
) == 0)
1316 errmsg
= "syntax error: system register not expected";
1318 else if (cc_name (&ex
)
1319 && (operand
->flags
& V850_OPERAND_CC
) == 0)
1321 errmsg
= "syntax error: condition code not expected";
1326 /* start-sanitize-v850e */
1328 If we are assembling a MOV instruction (or a CALLT.... :-)
1329 and the immediate value does not fit into the bits available
1330 then create a fake error so that the next MOV instruction
1331 will be selected. This one has a 32 bit immediate field. */
1333 if (((insn
& 0x07e0) == 0x0200)
1334 && ex
.X_op
== O_constant
1335 && (ex
.X_add_number
< (- (1 << (operand
->bits
- 1))) || ex
.X_add_number
> ((1 << operand
->bits
) - 1)))
1336 errmsg
= "use bigger instruction";
1337 /* end-sanitize-v850e */
1343 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1348 errmsg
= "illegal operand";
1351 errmsg
= "missing operand";
1354 if ((operand
->flags
& (V850_OPERAND_REG
| V850_OPERAND_SRG
)) == 0)
1356 errmsg
= "invalid operand";
1359 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1364 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1369 /* We need to generate a fixup for this expression. */
1370 if (fc
>= MAX_INSN_FIXUPS
)
1371 as_fatal ("too many fixups");
1373 fixups
[ fc
].exp
= ex
;
1374 fixups
[ fc
].opindex
= * opindex_ptr
;
1375 fixups
[ fc
].reloc
= BFD_RELOC_UNUSED
;
1381 str
= input_line_pointer
;
1382 input_line_pointer
= hold
;
1384 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']'
1393 next_opcode
= opcode
+ 1;
1394 if (next_opcode
->name
!= NULL
&& strcmp (next_opcode
->name
, opcode
->name
) == 0)
1396 opcode
= next_opcode
;
1401 ignore_rest_of_line ();
1402 input_line_pointer
= saved_input_line_pointer
;
1408 while (isspace (*str
))
1412 as_bad ("junk at end of line: `%s'", str
);
1414 input_line_pointer
= str
;
1416 /* Write out the instruction.
1418 Four byte insns have an opcode with the two high bits on. */
1419 if (relaxable
&& fc
> 0)
1421 f
= frag_var (rs_machine_dependent
, 6, 4, 0,
1422 fixups
[0].exp
.X_add_symbol
,
1423 fixups
[0].exp
.X_add_number
,
1424 (char *)fixups
[0].opindex
);
1426 md_number_to_chars (f
, insn
, insn_size
);
1427 md_number_to_chars (f
+ 2, 0, 4);
1432 if ((insn
& 0x0600) == 0x0600)
1437 /* start-sanitize-v850e */
1438 /* Special case: 32 bit MOV */
1439 if ((insn
& 0xffe0) == 0x0620)
1441 /* end_sanitize-v850e */
1443 f
= frag_more (insn_size
);
1445 md_number_to_chars (f
, insn
, insn_size
);
1447 if (extra_data_after_insn
)
1449 char * g
= frag_more (extra_data_len
);
1451 md_number_to_chars (g
, extra_data
, extra_data_len
);
1453 extra_data_after_insn
= false;
1457 /* Create any fixups. At this point we do not use a
1458 bfd_reloc_code_real_type, but instead just use the
1459 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1460 handle fixups for any operand type, although that is admittedly
1461 not a very exciting feature. We pick a BFD reloc type in
1463 for (i
= 0; i
< fc
; i
++)
1465 const struct v850_operand
* operand
;
1467 operand
= & v850_operands
[ fixups
[i
].opindex
];
1469 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1471 reloc_howto_type
* reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1479 size
= bfd_get_reloc_size (reloc_howto
);
1481 if (size
!= 2 && size
!= 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1484 address
= (f
- frag_now
->fr_literal
) + insn_size
- size
;
1486 fixP
= fix_new_exp (frag_now
, address
, size
,
1488 reloc_howto
->pc_relative
,
1491 switch (fixups
[i
].reloc
)
1493 case BFD_RELOC_LO16
:
1494 case BFD_RELOC_HI16
:
1495 case BFD_RELOC_HI16_S
:
1496 fixP
->fx_no_overflow
= 1;
1504 f
- frag_now
->fr_literal
, 4,
1506 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1507 (bfd_reloc_code_real_type
) (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)
1512 input_line_pointer
= saved_input_line_pointer
;
1516 /* If while processing a fixup, a reloc really needs to be created */
1517 /* then it is done here. */
1520 tc_gen_reloc (seg
, fixp
)
1526 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1527 reloc
->sym_ptr_ptr
= & fixp
->fx_addsy
->bsym
;
1528 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1529 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1531 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1533 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1534 "reloc %d not supported by object file format", (int)fixp
->fx_r_type
);
1538 reloc
->addend
= fixp
->fx_addnumber
;
1543 /* Assume everything will fit in two bytes, then expand as necessary. */
1545 md_estimate_size_before_relax (fragp
, seg
)
1555 md_pcrel_from (fixp
)
1558 /* If the symbol is undefined, or in a section other than our own,
1559 then let the linker figure it out. */
1560 if (fixp
->fx_addsy
!= (symbolS
*) NULL
&& ! S_IS_DEFINED (fixp
->fx_addsy
))
1562 /* The symbol is undefined. Let the linker figure it out. */
1565 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1569 md_apply_fix3 (fixp
, valuep
, seg
)
1577 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1582 else if (fixp
->fx_pcrel
)
1586 value
= fixp
->fx_offset
;
1587 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1589 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1590 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1593 /* We don't actually support subtracting a symbol. */
1594 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1595 "expression too complex");
1600 if ((int) fixp
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
1603 const struct v850_operand
* operand
;
1607 opindex
= (int) fixp
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
1608 operand
= & v850_operands
[ opindex
];
1610 /* Fetch the instruction, insert the fully resolved operand
1611 value, and stuff the instruction back again.
1613 Note the instruction has been stored in little endian
1615 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1617 insn
= bfd_getl32 ((unsigned char *) where
);
1618 insn
= v850_insert_operand (insn
, operand
, (offsetT
) value
,
1619 fixp
->fx_file
, fixp
->fx_line
);
1620 bfd_putl32 ((bfd_vma
) insn
, (unsigned char *) where
);
1624 /* Nothing else to do here. */
1628 /* Determine a BFD reloc value based on the operand information.
1629 We are only prepared to turn a few of the operands into relocs. */
1631 if (operand
->bits
== 22)
1632 fixp
->fx_r_type
= BFD_RELOC_V850_22_PCREL
;
1633 else if (operand
->bits
== 9)
1634 fixp
->fx_r_type
= BFD_RELOC_V850_9_PCREL
;
1637 as_bad_where(fixp
->fx_file
, fixp
->fx_line
,
1638 "unresolved expression that must be resolved");
1643 else if (fixp
->fx_done
)
1645 /* We still have to insert the value into memory! */
1646 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1647 if (fixp
->fx_size
== 1)
1648 *where
= value
& 0xff;
1649 if (fixp
->fx_size
== 2)
1650 bfd_putl16 (value
& 0xffff, (unsigned char *) where
);
1651 if (fixp
->fx_size
== 4)
1652 bfd_putl32 (value
, (unsigned char *) where
);
1655 fixp
->fx_addnumber
= value
;
1660 /* Insert an operand value into an instruction. */
1662 static unsigned long
1663 v850_insert_operand (insn
, operand
, val
, file
, line
)
1665 const struct v850_operand
* operand
;
1670 if (operand
->insert
)
1672 const char * message
= NULL
;
1674 insn
= (*operand
->insert
) (insn
, val
, & message
);
1675 if (message
!= NULL
)
1677 if (file
== (char *) NULL
)
1680 as_warn_where (file
, line
, message
);
1685 if (operand
->bits
!= 32)
1690 if ((operand
->flags
& V850_OPERAND_SIGNED
) != 0)
1692 if (! warn_signed_overflows
)
1693 max
= (1 << operand
->bits
) - 1;
1695 max
= (1 << (operand
->bits
- 1)) - 1;
1697 min
= - (1 << (operand
->bits
- 1));
1701 max
= (1 << operand
->bits
) - 1;
1703 if (! warn_unsigned_overflows
)
1704 min
= - (1 << (operand
->bits
- 1));
1711 if (test
< (offsetT
) min
|| test
> (offsetT
) max
)
1713 const char * err
= "operand out of range (%s not between %ld and %ld)";
1716 sprint_value (buf
, test
);
1717 if (file
== (char *) NULL
)
1718 as_warn (err
, buf
, min
, max
);
1720 as_warn_where (file
, line
, err
, buf
, min
, max
);
1724 insn
|= (((long) val
& ((1 << operand
->bits
) - 1)) << operand
->shift
);
1730 /* Parse a cons expression. We have to handle hi(), lo(), etc
1733 parse_cons_expression_v850 (exp
)
1736 /* See if there's a reloc prefix like hi() we have to handle. */
1737 hold_cons_reloc
= v850_reloc_prefix (NULL
);
1739 /* Do normal expression parsing. */
1743 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1744 found a reloc prefix, then we use that reloc, else we choose an
1745 appropriate one based on the size of the expression. */
1747 cons_fix_new_v850 (frag
, where
, size
, exp
)
1753 if (hold_cons_reloc
== BFD_RELOC_UNUSED
)
1756 hold_cons_reloc
= BFD_RELOC_32
;
1758 hold_cons_reloc
= BFD_RELOC_16
;
1760 hold_cons_reloc
= BFD_RELOC_8
;
1764 fix_new_exp (frag
, where
, size
, exp
, 0, hold_cons_reloc
);
1766 fix_new (frag
, where
, size
, NULL
, 0, 0, hold_cons_reloc
);