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 /* Structure to hold information about predefined registers. */
40 /* Generic assembler global variables which must be defined by all targets. */
42 /* Characters which always start a comment. */
43 const char comment_chars
[] = "#";
45 /* Characters which start a comment at the beginning of a line. */
46 const char line_comment_chars
[] = ";#";
48 /* Characters which may be used to separate multiple commands on a
50 const char line_separator_chars
[] = ";";
52 /* Characters which are used to indicate an exponent in a floating
54 const char EXP_CHARS
[] = "eE";
56 /* Characters which mean that a number is a floating point constant,
58 const char FLT_CHARS
[] = "dD";
61 const relax_typeS md_relax_table
[] = {
63 {0x1fffff, -0x200000, 6, 0},
68 static unsigned long v850_insert_operand
69 PARAMS ((unsigned long insn
, const struct v850_operand
*operand
,
70 offsetT val
, char *file
, unsigned int line
));
74 #define MAX_INSN_FIXUPS (5)
79 bfd_reloc_code_real_type reloc
;
81 struct v850_fixup fixups
[MAX_INSN_FIXUPS
];
85 v850_section (int arg
)
90 for (ptr
= input_line_pointer
; * ptr
!= '\n' && * ptr
!= 0; ptr
++)
91 if (* ptr
== ',' && ptr
[1] == '.')
97 obj_elf_section (arg
);
103 v850_bss (int ignore
)
105 register int temp
= get_absolute_expression ();
107 subseg_set (bss_section
, (subsegT
) temp
);
109 demand_empty_rest_of_line ();
113 v850_offset (int ignore
)
115 register int temp
= get_absolute_expression ();
117 subseg_set (now_seg
, (subsegT
) temp
);
119 demand_empty_rest_of_line ();
122 /* The target specific pseudo-ops which we support. */
123 const pseudo_typeS md_pseudo_table
[] =
125 {"bss", v850_bss
, 0},
126 {"offset", v850_offset
, 0},
127 {"section", v850_section
, 0},
132 /* Opcode hash table. */
133 static struct hash_control
*v850_hash
;
135 /* This table is sorted. Suitable for searching by a binary search. */
136 static const struct reg_name pre_defined_registers
[] =
138 { "ep", 30 }, /* ep - element ptr */
139 { "gp", 4 }, /* gp - global ptr */
140 { "hp", 2 }, /* hp - handler stack ptr */
141 { "lp", 31 }, /* lp - link ptr */
174 { "sp", 3 }, /* sp - stack ptr */
175 { "tp", 5 }, /* tp - text ptr */
178 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
181 static const struct reg_name system_registers
[] =
183 /* start-sanitize-v850e */
189 /* end-sanitize-v850e */
197 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
199 static const struct reg_name cc_names
[] =
224 #define CC_NAME_CNT (sizeof(cc_names) / sizeof(struct reg_name))
226 /* reg_name_search does a binary search of the given register table
227 to see if "name" is a valid regiter name. Returns the register
228 number from the array on success, or -1 on failure. */
231 reg_name_search (regs
, regcount
, name
)
232 const struct reg_name
*regs
;
236 int middle
, low
, high
;
244 middle
= (low
+ high
) / 2;
245 cmp
= strcasecmp (name
, regs
[middle
].name
);
251 return regs
[middle
].value
;
258 /* Summary of register_name().
260 * in: Input_line_pointer points to 1st char of operand.
262 * out: A expressionS.
263 * The operand may have been a register: in this case, X_op == O_register,
264 * X_add_number is set to the register number, and truth is returned.
265 * Input_line_pointer->(next non-blank) char after operand, or is in
266 * its original state.
269 register_name (expressionP
)
270 expressionS
*expressionP
;
277 /* Find the spelling of the operand */
278 start
= name
= input_line_pointer
;
280 c
= get_symbol_end ();
282 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
284 * input_line_pointer
= c
; /* put back the delimiting char */
286 /* look to see if it's in the register table */
289 expressionP
->X_op
= O_register
;
290 expressionP
->X_add_number
= reg_number
;
292 /* make the rest nice */
293 expressionP
->X_add_symbol
= NULL
;
294 expressionP
->X_op_symbol
= NULL
;
300 /* reset the line as if we had not done anything */
301 input_line_pointer
= start
;
307 /* Summary of system_register_name().
309 * in: Input_line_pointer points to 1st char of operand.
311 * out: A expressionS.
312 * The operand may have been a register: in this case, X_op == O_register,
313 * X_add_number is set to the register number, and truth is returned.
314 * Input_line_pointer->(next non-blank) char after operand, or is in
315 * its original state.
318 system_register_name (expressionP
, accept_numbers
)
319 expressionS
* expressionP
;
320 boolean accept_numbers
;
327 /* Find the spelling of the operand */
328 start
= name
= input_line_pointer
;
330 c
= get_symbol_end ();
331 reg_number
= reg_name_search (system_registers
, SYSREG_NAME_CNT
, name
);
333 * input_line_pointer
= c
; /* put back the delimiting char */
338 input_line_pointer
= start
; /* reset input_line pointer */
340 if (isdigit (* input_line_pointer
))
341 reg_number
= strtol (input_line_pointer
, & input_line_pointer
, 10);
343 /* Make sure that the register number is allowable. */
346 /* start-sanitize-v850e */
349 /* end-sanitize-v850e */
356 /* look to see if it's in the register table */
359 expressionP
->X_op
= O_register
;
360 expressionP
->X_add_number
= reg_number
;
362 /* make the rest nice */
363 expressionP
->X_add_symbol
= NULL
;
364 expressionP
->X_op_symbol
= NULL
;
370 /* reset the line as if we had not done anything */
371 input_line_pointer
= start
;
377 /* Summary of cc_name().
379 * in: Input_line_pointer points to 1st char of operand.
381 * out: A expressionS.
382 * The operand may have been a register: in this case, X_op == O_register,
383 * X_add_number is set to the register number, and truth is returned.
384 * Input_line_pointer->(next non-blank) char after operand, or is in
385 * its original state.
388 cc_name (expressionP
)
389 expressionS
*expressionP
;
396 /* Find the spelling of the operand */
397 start
= name
= input_line_pointer
;
399 c
= get_symbol_end ();
400 reg_number
= reg_name_search (cc_names
, CC_NAME_CNT
, name
);
402 * input_line_pointer
= c
; /* put back the delimiting char */
404 /* look to see if it's in the register table */
407 expressionP
->X_op
= O_constant
;
408 expressionP
->X_add_number
= reg_number
;
410 /* make the rest nice */
411 expressionP
->X_add_symbol
= NULL
;
412 expressionP
->X_op_symbol
= NULL
;
418 /* reset the line as if we had not done anything */
419 input_line_pointer
= start
;
426 skip_white_space (void)
428 while ( * input_line_pointer
== ' '
429 || * input_line_pointer
== '\t')
430 ++ input_line_pointer
;
433 /* start-sanitize-v850e */
434 /* Summary of parse_register_list ().
436 * in: Input_line_pointer points to 1st char of a list of registers.
437 * insn is the partially constructed instruction.
438 * operand is the operand being inserted.
440 * out: True if the parse completed successfully, False otherwise.
441 * If the parse completes the correct bit fields in the
442 * instruction will be filled in.
444 * Parses register lists with the syntax:
452 * and also parses constant epxressions whoes bits indicate the
453 * registers in the lists. The LSB in the expression refers to
454 * the lowest numbered permissable register in the register list,
455 * and so on upwards. System registers are considered to be very
462 unsigned long * insn
,
463 const struct v850_operand
* operand
466 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 };
467 /* start-sanitize-v850eq */
468 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 };
469 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 };
470 /* end-sanitize-v850eq */
475 /* Select a register array to parse. */
476 switch (operand
->shift
)
478 case 0xffe00001: regs
= type1_regs
; break;
479 /* start-sanitize-v850eq */
480 case 0xfff8000f: regs
= type2_regs
; break;
481 case 0xfff8001f: regs
= type3_regs
; break;
482 /* end-sanitize-v850eq */
484 as_bad ("unknown operand shift: %x\n", operand
->shift
);
485 return "internal failure in parse_register_list";
490 /* If the expression starts with a curly brace it is a register list.
491 Otherwise it is a constant expression ,whoes bits indicate which
492 registers are to be included in the list. */
494 if (* input_line_pointer
!= '{')
502 if (exp
.X_op
!= O_constant
)
503 return "constant expression or register list expected";
505 /* start-sanitize-v850eq */
506 if (regs
== type1_regs
)
507 /* end-sanitize-v850eq */
509 if (exp
.X_add_number
& 0xFFFFF000)
510 return "high bits set in register list expression";
512 for (reg
= 20; reg
< 32; reg
++)
513 if (exp
.X_add_number
& (1 << (reg
- 20)))
515 for (i
= 0; i
< 32; i
++)
520 /* start-sanitize-v850eq */
521 else if (regs
== type2_regs
)
523 if (exp
.X_add_number
& 0xFFFE0000)
524 return "high bits set in register list expression";
526 for (reg
= 1; reg
< 16; reg
++)
527 if (exp
.X_add_number
& (1 << (reg
- 1)))
529 for (i
= 0; i
< 32; i
++)
534 if (exp
.X_add_number
& (1 << 15))
537 if (exp
.X_add_number
& (1 << 16))
540 else /* regs == type3_regs */
542 if (exp
.X_add_number
& 0xFFFE0000)
543 return "high bits set in register list expression";
545 for (reg
= 16; reg
< 32; reg
++)
546 if (exp
.X_add_number
& (1 << (reg
- 16)))
548 for (i
= 0; i
< 32; i
++)
553 if (exp
.X_add_number
& (1 << 16))
556 /* end-sanitize-v850eq */
561 input_line_pointer
++;
563 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
566 if (register_name (& exp
))
570 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
571 for (i
= 0; i
< 32; i
++)
573 if (regs
[ i
] == exp
.X_add_number
)
582 return "illegal register included in list";
585 else if (system_register_name (& exp
, true))
587 if (regs
== type1_regs
)
589 return "system registers cannot be included in list";
591 else if (exp
.X_add_number
== 5)
593 if (regs
== type2_regs
)
594 return "PSW cannot be included in list";
601 else if (* input_line_pointer
== '}')
603 input_line_pointer
++;
606 else if (* input_line_pointer
== ',')
608 input_line_pointer
++;
611 else if (* input_line_pointer
== '-')
613 /* We have encountered a range of registers: rX - rY */
618 ++ input_line_pointer
;
620 /* Get the second register in the range. */
621 if (! register_name (& exp2
))
623 return "second register should follow dash in register list";
624 exp2
.X_add_number
= exp
.X_add_number
;
627 /* Add the rest of the registers in the range. */
628 for (j
= exp
.X_add_number
+ 1; j
<= exp2
.X_add_number
; j
++)
632 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
633 for (i
= 0; i
< 32; i
++)
644 return "illegal register included in list";
658 /* end-sanitize-v850e */
660 CONST
char * md_shortopts
= "m:";
662 struct option md_longopts
[] =
664 {NULL
, no_argument
, NULL
, 0}
666 size_t md_longopts_size
= sizeof md_longopts
;
670 md_show_usage (stream
)
673 fprintf (stream
, "V850 options:\n");
674 fprintf (stream
, "\tnone at present\n");
678 md_parse_option (c
, arg
)
686 md_undefined_symbol (name
)
693 md_atof (type
, litp
, sizep
)
699 LITTLENUM_TYPE words
[4];
715 return "bad call to md_atof";
718 t
= atof_ieee (input_line_pointer
, type
, words
);
720 input_line_pointer
= t
;
724 for (i
= prec
- 1; i
>= 0; i
--)
726 md_number_to_chars (litp
, (valueT
) words
[i
], 2);
736 md_convert_frag (abfd
, sec
, fragP
)
741 subseg_change (sec
, 0);
742 if (fragP
->fr_subtype
== 0)
744 fix_new (fragP
, fragP
->fr_fix
, 2, fragP
->fr_symbol
,
745 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
);
749 else if (fragP
->fr_subtype
== 1)
751 /* Reverse the condition of the first branch. */
752 fragP
->fr_literal
[0] &= 0xf7;
753 /* Mask off all the displacement bits. */
754 fragP
->fr_literal
[0] &= 0x8f;
755 fragP
->fr_literal
[1] &= 0x07;
756 /* Now set the displacement bits so that we branch
757 around the unconditional branch. */
758 fragP
->fr_literal
[0] |= 0x30;
760 /* Now create the unconditional branch + fixup to the final
762 md_number_to_chars (&fragP
->fr_literal
[2], 0x00000780, 4);
763 fix_new (fragP
, fragP
->fr_fix
+ 2, 4, fragP
->fr_symbol
,
764 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
+ 1);
773 md_section_align (seg
, addr
)
777 int align
= bfd_get_section_alignment (stdoutput
, seg
);
778 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
784 char *prev_name
= "";
785 register const struct v850_opcode
*op
;
787 v850_hash
= hash_new();
789 /* Insert unique names into hash table. The V850 instruction set
790 has many identical opcode names that have different opcodes based
791 on the operands. This hash table then provides a quick index to
792 the first opcode with a particular name in the opcode table. */
797 if (strcmp (prev_name
, op
->name
))
799 prev_name
= (char *) op
->name
;
800 hash_insert (v850_hash
, op
->name
, (char *) op
);
805 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, 0);
806 fprintf (stderr
, "set to %d\n", 0 );
807 /* start-sanitize-v850e */
808 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, bfd_mach_v850e
);
809 fprintf (stderr
, "set to %d\n", bfd_mach_v850e
);
810 /* end-sanitize-v850e */
811 /* start-sanitize-v850eq */
812 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, bfd_mach_v850eq
);
813 fprintf (stderr
, "set to %d\n", bfd_mach_v850eq
);
814 /* end-sanitize-v850eq */
817 static bfd_reloc_code_real_type
820 if (strncmp(input_line_pointer
, "hi0(", 4) == 0)
822 input_line_pointer
+= 3;
823 return BFD_RELOC_HI16
;
825 if (strncmp(input_line_pointer
, "hi(", 3) == 0)
827 input_line_pointer
+= 2;
828 return BFD_RELOC_HI16_S
;
830 if (strncmp (input_line_pointer
, "lo(", 3) == 0)
832 input_line_pointer
+= 2;
833 return BFD_RELOC_LO16
;
836 if (strncmp (input_line_pointer
, "sdaoff(", 7) == 0)
838 input_line_pointer
+= 6;
839 return BFD_RELOC_V850_SDA_OFFSET
;
842 if (strncmp (input_line_pointer
, "zdaoff(", 7) == 0)
844 input_line_pointer
+= 6;
845 return BFD_RELOC_V850_ZDA_OFFSET
;
848 if (strncmp (input_line_pointer
, "tdaoff(", 7) == 0)
850 input_line_pointer
+= 6;
851 return BFD_RELOC_V850_TDA_OFFSET
;
855 if (strncmp(input_line_pointer
, "(hi0(", 5) == 0)
857 input_line_pointer
+= 4;
858 return BFD_RELOC_HI16
;
860 if (strncmp(input_line_pointer
, "(hi(", 4) == 0)
862 input_line_pointer
+= 3;
863 return BFD_RELOC_HI16_S
;
865 if (strncmp (input_line_pointer
, "(lo(", 4) == 0)
867 input_line_pointer
+= 3;
868 return BFD_RELOC_LO16
;
871 if (strncmp (input_line_pointer
, "(sdaoff(", 8) == 0)
873 input_line_pointer
+= 7;
874 return BFD_RELOC_V850_SDA_OFFSET
;
877 if (strncmp (input_line_pointer
, "(zdaoff(", 8) == 0)
879 input_line_pointer
+= 7;
880 return BFD_RELOC_V850_ZDA_OFFSET
;
883 if (strncmp (input_line_pointer
, "(tdaoff(", 8) == 0)
885 input_line_pointer
+= 7;
886 return BFD_RELOC_V850_TDA_OFFSET
;
889 return BFD_RELOC_UNUSED
;
897 char * start_of_operands
;
898 struct v850_opcode
* opcode
;
899 struct v850_opcode
* next_opcode
;
900 const unsigned char * opindex_ptr
;
904 unsigned long insn_size
;
908 bfd_reloc_code_real_type reloc
;
909 boolean extra_data_after_insn
= false;
910 unsigned extra_data_len
;
911 unsigned long extra_data
;
912 char * saved_input_line_pointer
;
915 /* Get the opcode. */
916 for (s
= str
; *s
!= '\0' && ! isspace (*s
); s
++)
922 /* find the first opcode with the proper name */
923 opcode
= (struct v850_opcode
*)hash_find (v850_hash
, str
);
926 as_bad ("Unrecognized opcode: `%s'", str
);
927 ignore_rest_of_line ();
932 while (isspace (* str
))
935 start_of_operands
= str
;
937 saved_input_line_pointer
= input_line_pointer
;
941 const char * errmsg
= NULL
;
947 insn
= opcode
->opcode
;
948 extra_data_after_insn
= false;
950 input_line_pointer
= str
= start_of_operands
;
952 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
954 const struct v850_operand
* operand
;
958 if (next_opindex
== 0)
960 operand
= & v850_operands
[ * opindex_ptr
];
964 operand
= & v850_operands
[ next_opindex
];
970 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
973 if (operand
->flags
& V850_OPERAND_RELAX
)
976 /* Gather the operand. */
977 hold
= input_line_pointer
;
978 input_line_pointer
= str
;
980 /*fprintf (stderr, "operand: %s index = %d, opcode = %s\n", input_line_pointer, opindex_ptr - opcode->operands, opcode->name );*/
982 /* lo(), hi(), hi0(), etc... */
983 if ((reloc
= v850_reloc_prefix()) != BFD_RELOC_UNUSED
)
987 if (ex
.X_op
== O_constant
)
993 /* Truncate, then sign extend the value. */
994 ex
.X_add_number
= SEXT16 (ex
.X_add_number
);
1000 /* Truncate, then sign extend the value. */
1001 ex
.X_add_number
= SEXT16 (ex
.X_add_number
>> 16);
1005 case BFD_RELOC_HI16_S
:
1007 /* Truncate, then sign extend the value. */
1008 int temp
= (ex
.X_add_number
>> 16) & 0xffff;
1010 temp
+= (ex
.X_add_number
>> 15) & 1;
1012 ex
.X_add_number
= SEXT16 (temp
);
1020 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1025 if (fc
> MAX_INSN_FIXUPS
)
1026 as_fatal ("too many fixups");
1028 /* Adjust any offsets for sst.{h,w}/sld.{h,w} instructions */
1029 if (operand
->flags
& V850_OPERAND_ADJUST_SHORT_MEMORY
)
1030 ex
.X_add_number
>>= 1;
1032 fixups
[fc
].exp
= ex
;
1033 fixups
[fc
].opindex
= *opindex_ptr
;
1034 fixups
[fc
].reloc
= reloc
;
1042 if ((operand
->flags
& V850_OPERAND_REG
) != 0)
1044 if (!register_name (& ex
))
1046 errmsg
= "invalid register name";
1049 if ((operand
->flags
& V850_NOT_R0
)
1050 && ex
.X_add_number
== 0)
1052 errmsg
= "register r0 cannot be used here";
1055 else if ((operand
->flags
& V850_OPERAND_SRG
) != 0)
1057 if (!system_register_name (& ex
, true))
1059 errmsg
= "UGG invalid system register name";
1062 else if ((operand
->flags
& V850_OPERAND_EP
) != 0)
1064 char * start
= input_line_pointer
;
1065 char c
= get_symbol_end ();
1067 if (strcmp (start
, "ep") != 0 && strcmp (start
, "r30") != 0)
1069 /* Put things back the way we found them. */
1070 *input_line_pointer
= c
;
1071 input_line_pointer
= start
;
1072 errmsg
= "expected EP register";
1076 *input_line_pointer
= c
;
1077 str
= input_line_pointer
;
1078 input_line_pointer
= hold
;
1080 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1084 else if ((operand
->flags
& V850_OPERAND_CC
) != 0)
1086 if (!cc_name (& ex
))
1088 errmsg
= "invalid condition code name";
1091 /* start-sanitize-v850e */
1092 else if (operand
->flags
& V850E_PUSH_POP
)
1094 errmsg
= parse_register_list (& insn
, operand
);
1096 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1097 ex
.X_op
= O_constant
;
1098 ex
.X_add_number
= 0;
1100 /* end-sanitize-v850e */
1101 /* start-sanitize-v850e */
1102 else if (operand
->flags
& V850E_IMMEDIATE16
)
1106 if (ex
.X_op
!= O_constant
)
1107 errmsg
= "constant expression expected";
1108 else if (ex
.X_add_number
& 0xffff0000)
1110 if (ex
.X_add_number
& 0xffff)
1111 errmsg
= "constant too big to fit into instruction";
1112 else if ((insn
& 0x001fffc0) == 0x00130780)
1113 ex
.X_add_number
>>= 16;
1115 errmsg
= "constant too big to fit into instruction";
1118 extra_data_after_insn
= true;
1120 extra_data
= ex
.X_add_number
;
1121 ex
.X_add_number
= 0;
1123 /* end-sanitize-v850e */
1124 /* start-sanitize-v850e */
1125 else if (operand
->flags
& V850E_IMMEDIATE32
)
1129 if (ex
.X_op
!= O_constant
)
1130 errmsg
= "constant expression expected";
1132 extra_data_after_insn
= true;
1134 extra_data
= ex
.X_add_number
;
1135 ex
.X_add_number
= 0;
1137 /* end-sanitize-v850e */
1138 else if (register_name (&ex
)
1139 && (operand
->flags
& V850_OPERAND_REG
) == 0)
1141 errmsg
= "syntax error: register not expected";
1143 else if (system_register_name (& ex
, false)
1144 && (operand
->flags
& V850_OPERAND_SRG
) == 0)
1146 errmsg
= "syntax error: system register not expected";
1148 else if (cc_name (&ex
)
1149 && (operand
->flags
& V850_OPERAND_CC
) == 0)
1151 errmsg
= "syntax error: condition code not expected";
1156 /* start-sanitize-v850e */
1158 If we are assembling a MOV instruction (or a CALLT.... :-)
1159 and the immediate value does not fit into the bits available
1160 then create a fake error so that the next MOV instruction
1161 will be selected. This one has a 32 bit immediate field. */
1163 if (((insn
& 0x07e0) == 0x0200)
1164 && ex
.X_op
== O_constant
1165 && (ex
.X_add_number
< (- (1 << (operand
->bits
- 1))) || ex
.X_add_number
> ((1 << operand
->bits
) - 1)))
1166 errmsg
= "use bigger instruction";
1167 /* end-sanitize-v850e */
1173 /*fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number );*/
1178 errmsg
= "illegal operand";
1181 errmsg
= "missing operand";
1184 if ((operand
->flags
& (V850_OPERAND_REG
| V850_OPERAND_SRG
)) == 0)
1186 errmsg
= "invalid operand";
1189 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1194 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1199 /* We need to generate a fixup for this expression. */
1200 if (fc
>= MAX_INSN_FIXUPS
)
1201 as_fatal ("too many fixups");
1202 fixups
[fc
].exp
= ex
;
1203 fixups
[fc
].opindex
= *opindex_ptr
;
1204 fixups
[fc
].reloc
= BFD_RELOC_UNUSED
;
1210 str
= input_line_pointer
;
1211 input_line_pointer
= hold
;
1213 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']'
1222 next_opcode
= opcode
+ 1;
1223 if (next_opcode
->name
!= NULL
&& strcmp (next_opcode
->name
, opcode
->name
) == 0)
1225 opcode
= next_opcode
;
1229 as_bad ("%s", errmsg
);
1230 ignore_rest_of_line ();
1231 input_line_pointer
= saved_input_line_pointer
;
1237 while (isspace (*str
))
1241 as_bad ("junk at end of line: `%s'", str
);
1243 input_line_pointer
= str
;
1245 /* Write out the instruction.
1247 Four byte insns have an opcode with the two high bits on. */
1248 if (relaxable
&& fc
> 0)
1250 f
= frag_var (rs_machine_dependent
, 6, 4, 0,
1251 fixups
[0].exp
.X_add_symbol
,
1252 fixups
[0].exp
.X_add_number
,
1253 (char *)fixups
[0].opindex
);
1255 md_number_to_chars (f
, insn
, insn_size
);
1256 md_number_to_chars (f
+ 2, 0, 4);
1261 if ((insn
& 0x0600) == 0x0600)
1266 /* start-sanitize-v850e */
1267 /* Special case: 32 bit MOV */
1268 if ((insn
& 0xffe0) == 0x0620)
1270 /* end_sanitize-v850e */
1272 f
= frag_more (insn_size
);
1274 md_number_to_chars (f
, insn
, insn_size
);
1276 if (extra_data_after_insn
)
1278 f
= frag_more (extra_data_len
);
1279 md_number_to_chars (f
, extra_data
, extra_data_len
);
1281 extra_data_after_insn
= false;
1285 /* Create any fixups. At this point we do not use a
1286 bfd_reloc_code_real_type, but instead just use the
1287 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1288 handle fixups for any operand type, although that is admittedly
1289 not a very exciting feature. We pick a BFD reloc type in
1291 for (i
= 0; i
< fc
; i
++)
1293 const struct v850_operand
*operand
;
1295 operand
= &v850_operands
[fixups
[i
].opindex
];
1296 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1298 reloc_howto_type
*reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1306 size
= bfd_get_reloc_size (reloc_howto
);
1308 /* The "size" of a TDA_OFFSET reloc varies depending
1309 on what kind of instruction it's used in! */
1310 if (reloc_howto
->type
== 11 && insn_size
> 2)
1313 if (size
< 1 || size
> 4)
1317 fixP
= fix_new_exp (frag_now
, f
- frag_now
->fr_literal
+ offset
, size
,
1319 reloc_howto
->pc_relative
,
1322 switch (fixups
[i
].reloc
)
1324 case BFD_RELOC_LO16
:
1325 case BFD_RELOC_HI16
:
1326 case BFD_RELOC_HI16_S
:
1327 fixP
->fx_no_overflow
= 1;
1333 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, 4,
1335 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1336 ((bfd_reloc_code_real_type
)
1337 (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)));
1341 input_line_pointer
= saved_input_line_pointer
;
1345 /* if while processing a fixup, a reloc really needs to be created */
1346 /* then it is done here */
1349 tc_gen_reloc (seg
, fixp
)
1354 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1355 reloc
->sym_ptr_ptr
= &fixp
->fx_addsy
->bsym
;
1356 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1357 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1358 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1360 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1361 "reloc %d not supported by object file format", (int)fixp
->fx_r_type
);
1364 reloc
->addend
= fixp
->fx_addnumber
;
1365 /* printf("tc_gen_reloc: addr=%x addend=%x\n", reloc->address, reloc->addend); */
1369 /* Assume everything will fit in two bytes, then expand as necessary. */
1371 md_estimate_size_before_relax (fragp
, seg
)
1381 md_pcrel_from (fixp
)
1384 /* If the symbol is undefined, or in a section other than our own,
1385 then let the linker figure it out. */
1386 if (fixp
->fx_addsy
!= (symbolS
*) NULL
&& ! S_IS_DEFINED (fixp
->fx_addsy
))
1388 /* The symbol is undefined. Let the linker figure it out. */
1391 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1395 md_apply_fix3 (fixp
, valuep
, seg
)
1403 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1408 else if (fixp
->fx_pcrel
)
1412 value
= fixp
->fx_offset
;
1413 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1415 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1416 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1419 /* We don't actually support subtracting a symbol. */
1420 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1421 "expression too complex");
1426 /* printf("md_apply_fix: value=0x%x type=%d\n", value, fixp->fx_r_type); */
1428 if ((int) fixp
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
1431 const struct v850_operand
*operand
;
1435 opindex
= (int) fixp
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
1436 operand
= &v850_operands
[opindex
];
1438 /* Fetch the instruction, insert the fully resolved operand
1439 value, and stuff the instruction back again.
1441 Note the instruction has been stored in little endian
1443 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1445 insn
= bfd_getl32((unsigned char *) where
);
1446 insn
= v850_insert_operand (insn
, operand
, (offsetT
) value
,
1447 fixp
->fx_file
, fixp
->fx_line
);
1448 bfd_putl32((bfd_vma
) insn
, (unsigned char *) where
);
1452 /* Nothing else to do here. */
1456 /* Determine a BFD reloc value based on the operand information.
1457 We are only prepared to turn a few of the operands into relocs. */
1459 if (operand
->bits
== 22)
1460 fixp
->fx_r_type
= BFD_RELOC_V850_22_PCREL
;
1461 else if (operand
->bits
== 9)
1462 fixp
->fx_r_type
= BFD_RELOC_V850_9_PCREL
;
1463 else if (operand
->bits
== 16)
1464 fixp
->fx_r_type
= BFD_RELOC_V850_16_PCREL
;
1467 as_bad_where(fixp
->fx_file
, fixp
->fx_line
,
1468 "unresolved expression that must be resolved");
1473 else if (fixp
->fx_done
)
1475 /* We still have to insert the value into memory! */
1476 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1477 if (fixp
->fx_size
== 1)
1478 *where
= value
& 0xff;
1479 if (fixp
->fx_size
== 2)
1480 bfd_putl16(value
& 0xffff, (unsigned char *) where
);
1481 if (fixp
->fx_size
== 4)
1482 bfd_putl32(value
, (unsigned char *) where
);
1485 fixp
->fx_addnumber
= value
;
1490 /* Insert an operand value into an instruction. */
1492 static unsigned long
1493 v850_insert_operand (insn
, operand
, val
, file
, line
)
1495 const struct v850_operand
* operand
;
1500 if (operand
->bits
!= 32)
1505 if ((operand
->flags
& V850_OPERAND_SIGNED
) != 0)
1507 max
= (1 << (operand
->bits
- 1)) - 1;
1508 min
= - (1 << (operand
->bits
- 1));
1512 max
= (1 << operand
->bits
) - 1;
1518 if (test
< (offsetT
) min
|| test
> (offsetT
) max
)
1521 "operand out of range (%s not between %ld and %ld)";
1524 sprint_value (buf
, test
);
1525 if (file
== (char *) NULL
)
1526 as_warn (err
, buf
, min
, max
);
1528 as_warn_where (file
, line
, err
, buf
, min
, max
);
1532 if (operand
->insert
)
1534 const char * message
= NULL
;
1536 insn
= (*operand
->insert
) (insn
, val
, & message
);
1537 if (message
!= NULL
)
1539 if (file
== (char *) NULL
)
1542 as_warn_where (file
, line
, message
);
1546 insn
|= (((long) val
& ((1 << operand
->bits
) - 1)) << operand
->shift
);
1551 /* Parse a cons expression. We have to handle hi(), lo(), etc
1554 parse_cons_expression_v850 (exp
)
1557 /* See if there's a reloc prefix like hi() we have to handle. */
1558 hold_cons_reloc
= v850_reloc_prefix ();
1560 /* Do normal expression parsing. */
1564 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1565 found a reloc prefix, then we use that reloc, else we choose an
1566 appropriate one based on the size of the expression. */
1568 cons_fix_new_v850 (frag
, where
, size
, exp
)
1574 if (hold_cons_reloc
== BFD_RELOC_UNUSED
)
1577 hold_cons_reloc
= BFD_RELOC_32
;
1579 hold_cons_reloc
= BFD_RELOC_16
;
1581 hold_cons_reloc
= BFD_RELOC_8
;
1585 fix_new_exp (frag
, where
, size
, exp
, 0, hold_cons_reloc
);
1587 fix_new (frag
, where
, size
, NULL
, 0, 0, hold_cons_reloc
);