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 BFD machine number. */
38 static int machine
= TARGET_MACHINE
;
40 /* Indicates the target processor(s) for the assemble. */
41 static unsigned int processor_mask
= TARGET_PROCESSOR
;
44 /* Structure to hold information about predefined registers. */
51 /* Generic assembler global variables which must be defined by all targets. */
53 /* Characters which always start a comment. */
54 const char comment_chars
[] = "#";
56 /* Characters which start a comment at the beginning of a line. */
57 const char line_comment_chars
[] = ";#";
59 /* Characters which may be used to separate multiple commands on a
61 const char line_separator_chars
[] = ";";
63 /* Characters which are used to indicate an exponent in a floating
65 const char EXP_CHARS
[] = "eE";
67 /* Characters which mean that a number is a floating point constant,
69 const char FLT_CHARS
[] = "dD";
72 const relax_typeS md_relax_table
[] = {
74 {0x1fffff, -0x200000, 6, 0},
78 static segT sdata_section
= NULL
;
79 static segT tdata_section
= NULL
;
80 static segT zdata_section
= NULL
;
81 static segT sbss_section
= NULL
;
82 static segT tbss_section
= NULL
;
83 static segT zbss_section
= NULL
;
84 static segT rosdata_section
= NULL
;
85 static segT rozdata_section
= NULL
;
89 static unsigned long v850_insert_operand
90 PARAMS ((unsigned long insn
, const struct v850_operand
*operand
,
91 offsetT val
, char *file
, unsigned int line
));
95 #define MAX_INSN_FIXUPS (5)
100 bfd_reloc_code_real_type reloc
;
102 struct v850_fixup fixups
[MAX_INSN_FIXUPS
];
106 v850_sdata (int ignore
)
108 subseg_set (sdata_section
, (subsegT
) get_absolute_expression ());
110 demand_empty_rest_of_line ();
114 v850_tdata (int ignore
)
116 subseg_set (tdata_section
, (subsegT
) get_absolute_expression ());
118 demand_empty_rest_of_line ();
122 v850_zdata (int ignore
)
124 subseg_set (zdata_section
, (subsegT
) get_absolute_expression ());
126 demand_empty_rest_of_line ();
130 v850_sbss (int ignore
)
132 subseg_set (sbss_section
, (subsegT
) get_absolute_expression ());
134 demand_empty_rest_of_line ();
138 v850_tbss (int ignore
)
140 subseg_set (tbss_section
, (subsegT
) get_absolute_expression ());
142 demand_empty_rest_of_line ();
146 v850_zbss (int ignore
)
148 subseg_set (zbss_section
, (subsegT
) get_absolute_expression ());
150 demand_empty_rest_of_line ();
154 v850_rosdata (int ignore
)
156 subseg_set (rosdata_section
, (subsegT
) get_absolute_expression ());
158 demand_empty_rest_of_line ();
162 v850_rozdata (int ignore
)
164 subseg_set (rozdata_section
, (subsegT
) get_absolute_expression ());
166 demand_empty_rest_of_line ();
170 v850_section (int arg
)
175 for (ptr
= input_line_pointer
; * ptr
!= '\n' && * ptr
!= 0; ptr
++)
176 if (* ptr
== ',' && ptr
[1] == '.')
182 obj_elf_section (arg
);
188 v850_bss (int ignore
)
190 register int temp
= get_absolute_expression ();
192 obj_elf_section_change_hook();
194 subseg_set (bss_section
, (subsegT
) temp
);
196 demand_empty_rest_of_line ();
200 v850_offset (int ignore
)
202 int temp
= get_absolute_expression ();
204 temp
-= frag_now_fix();
207 (void) frag_more (temp
);
209 demand_empty_rest_of_line ();
213 set_machine (int number
)
216 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, machine
);
220 case 0: processor_mask
= PROCESSOR_V850
; break;
221 /* start-sanitize-v850e */
222 case bfd_mach_v850e
: processor_mask
= PROCESSOR_V850E
; break;
223 /* end-sanitize-v850e */
224 /* start-sanitize-v850eq */
225 case bfd_mach_v850eq
: processor_mask
= PROCESSOR_V850EQ
; break;
226 /* end-sanitize-v850eq */
230 /* The target specific pseudo-ops which we support. */
231 const pseudo_typeS md_pseudo_table
[] =
233 {"sdata", v850_sdata
, 0},
234 {"tdata", v850_tdata
, 0},
235 {"zdata", v850_zdata
, 0},
236 {"sbss", v850_sbss
, 0},
237 {"tbss", v850_tbss
, 0},
238 {"zbss", v850_zbss
, 0},
239 {"rosdata", v850_rosdata
, 0},
240 {"rozdata", v850_rozdata
, 0},
241 {"bss", v850_bss
, 0},
242 {"offset", v850_offset
, 0},
243 {"section", v850_section
, 0},
245 {"v850", set_machine
, 0},
246 /* start-sanitize-v850e */
247 {"v850e", set_machine
, bfd_mach_v850e
},
248 /* end-sanitize-v850e */
249 /* start-sanitize-v850eq */
250 {"v850eq", set_machine
, bfd_mach_v850eq
},
251 /* end-sanitize-v850eq */
255 /* Opcode hash table. */
256 static struct hash_control
*v850_hash
;
258 /* This table is sorted. Suitable for searching by a binary search. */
259 static const struct reg_name pre_defined_registers
[] =
261 { "ep", 30 }, /* ep - element ptr */
262 { "gp", 4 }, /* gp - global ptr */
263 { "hp", 2 }, /* hp - handler stack ptr */
264 { "lp", 31 }, /* lp - link ptr */
297 { "sp", 3 }, /* sp - stack ptr */
298 { "tp", 5 }, /* tp - text ptr */
301 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
304 static const struct reg_name system_registers
[] =
306 /* start-sanitize-v850e */
312 /* end-sanitize-v850e */
320 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
322 static const struct reg_name cc_names
[] =
347 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
349 /* reg_name_search does a binary search of the given register table
350 to see if "name" is a valid regiter name. Returns the register
351 number from the array on success, or -1 on failure. */
354 reg_name_search (regs
, regcount
, name
)
355 const struct reg_name
* regs
;
359 int middle
, low
, high
;
367 middle
= (low
+ high
) / 2;
368 cmp
= strcasecmp (name
, regs
[middle
].name
);
374 return regs
[middle
].value
;
381 /* Summary of register_name().
383 * in: Input_line_pointer points to 1st char of operand.
385 * out: A expressionS.
386 * The operand may have been a register: in this case, X_op == O_register,
387 * X_add_number is set to the register number, and truth is returned.
388 * Input_line_pointer->(next non-blank) char after operand, or is in
389 * its original state.
392 register_name (expressionP
)
393 expressionS
* expressionP
;
400 /* Find the spelling of the operand */
401 start
= name
= input_line_pointer
;
403 c
= get_symbol_end ();
405 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
407 * input_line_pointer
= c
; /* put back the delimiting char */
409 /* look to see if it's in the register table */
412 expressionP
->X_op
= O_register
;
413 expressionP
->X_add_number
= reg_number
;
415 /* make the rest nice */
416 expressionP
->X_add_symbol
= NULL
;
417 expressionP
->X_op_symbol
= NULL
;
423 /* reset the line as if we had not done anything */
424 input_line_pointer
= start
;
430 /* Summary of system_register_name().
432 * in: Input_line_pointer points to 1st char of operand.
434 * out: A expressionS.
435 * The operand may have been a register: in this case, X_op == O_register,
436 * X_add_number is set to the register number, and truth is returned.
437 * Input_line_pointer->(next non-blank) char after operand, or is in
438 * its original state.
441 system_register_name (expressionP
, accept_numbers
)
442 expressionS
* expressionP
;
443 boolean accept_numbers
;
450 /* Find the spelling of the operand */
451 start
= name
= input_line_pointer
;
453 c
= get_symbol_end ();
454 reg_number
= reg_name_search (system_registers
, SYSREG_NAME_CNT
, name
);
456 * input_line_pointer
= c
; /* put back the delimiting char */
461 input_line_pointer
= start
; /* reset input_line pointer */
463 if (isdigit (* input_line_pointer
))
464 reg_number
= strtol (input_line_pointer
, & input_line_pointer
, 10);
466 /* Make sure that the register number is allowable. */
469 /* start-sanitize-v850e */
472 /* end-sanitize-v850e */
479 /* look to see if it's in the register table */
482 expressionP
->X_op
= O_register
;
483 expressionP
->X_add_number
= reg_number
;
485 /* make the rest nice */
486 expressionP
->X_add_symbol
= NULL
;
487 expressionP
->X_op_symbol
= NULL
;
493 /* reset the line as if we had not done anything */
494 input_line_pointer
= start
;
500 /* Summary of cc_name().
502 * in: Input_line_pointer points to 1st char of operand.
504 * out: A expressionS.
505 * The operand may have been a register: in this case, X_op == O_register,
506 * X_add_number is set to the register number, and truth is returned.
507 * Input_line_pointer->(next non-blank) char after operand, or is in
508 * its original state.
511 cc_name (expressionP
)
512 expressionS
*expressionP
;
519 /* Find the spelling of the operand */
520 start
= name
= input_line_pointer
;
522 c
= get_symbol_end ();
523 reg_number
= reg_name_search (cc_names
, CC_NAME_CNT
, name
);
525 * input_line_pointer
= c
; /* put back the delimiting char */
527 /* look to see if it's in the register table */
530 expressionP
->X_op
= O_constant
;
531 expressionP
->X_add_number
= reg_number
;
533 /* make the rest nice */
534 expressionP
->X_add_symbol
= NULL
;
535 expressionP
->X_op_symbol
= NULL
;
541 /* reset the line as if we had not done anything */
542 input_line_pointer
= start
;
549 skip_white_space (void)
551 while ( * input_line_pointer
== ' '
552 || * input_line_pointer
== '\t')
553 ++ input_line_pointer
;
556 /* start-sanitize-v850e */
557 /* Summary of parse_register_list ().
559 * in: Input_line_pointer points to 1st char of a list of registers.
560 * insn is the partially constructed instruction.
561 * operand is the operand being inserted.
563 * out: True if the parse completed successfully, False otherwise.
564 * If the parse completes the correct bit fields in the
565 * instruction will be filled in.
567 * Parses register lists with the syntax:
575 * and also parses constant epxressions whoes bits indicate the
576 * registers in the lists. The LSB in the expression refers to
577 * the lowest numbered permissable register in the register list,
578 * and so on upwards. System registers are considered to be very
585 unsigned long * insn
,
586 const struct v850_operand
* operand
589 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 };
590 /* start-sanitize-v850eq */
591 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 };
592 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 };
593 /* end-sanitize-v850eq */
598 /* Select a register array to parse. */
599 switch (operand
->shift
)
601 case 0xffe00001: regs
= type1_regs
; break;
602 /* start-sanitize-v850eq */
603 case 0xfff8000f: regs
= type2_regs
; break;
604 case 0xfff8001f: regs
= type3_regs
; break;
605 /* end-sanitize-v850eq */
607 as_bad ("unknown operand shift: %x\n", operand
->shift
);
608 return "internal failure in parse_register_list";
613 /* If the expression starts with a curly brace it is a register list.
614 Otherwise it is a constant expression ,whoes bits indicate which
615 registers are to be included in the list. */
617 if (* input_line_pointer
!= '{')
625 if (exp
.X_op
!= O_constant
)
626 return "constant expression or register list expected";
628 /* start-sanitize-v850eq */
629 if (regs
== type1_regs
)
630 /* end-sanitize-v850eq */
632 if (exp
.X_add_number
& 0xFFFFF000)
633 return "high bits set in register list expression";
635 for (reg
= 20; reg
< 32; reg
++)
636 if (exp
.X_add_number
& (1 << (reg
- 20)))
638 for (i
= 0; i
< 32; i
++)
643 /* start-sanitize-v850eq */
644 else if (regs
== type2_regs
)
646 if (exp
.X_add_number
& 0xFFFE0000)
647 return "high bits set in register list expression";
649 for (reg
= 1; reg
< 16; reg
++)
650 if (exp
.X_add_number
& (1 << (reg
- 1)))
652 for (i
= 0; i
< 32; i
++)
657 if (exp
.X_add_number
& (1 << 15))
660 if (exp
.X_add_number
& (1 << 16))
663 else /* regs == type3_regs */
665 if (exp
.X_add_number
& 0xFFFE0000)
666 return "high bits set in register list expression";
668 for (reg
= 16; reg
< 32; reg
++)
669 if (exp
.X_add_number
& (1 << (reg
- 16)))
671 for (i
= 0; i
< 32; i
++)
676 if (exp
.X_add_number
& (1 << 16))
679 /* end-sanitize-v850eq */
684 input_line_pointer
++;
686 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
689 if (register_name (& exp
))
693 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
694 for (i
= 0; i
< 32; i
++)
696 if (regs
[ i
] == exp
.X_add_number
)
705 return "illegal register included in list";
708 else if (system_register_name (& exp
, true))
710 if (regs
== type1_regs
)
712 return "system registers cannot be included in list";
714 else if (exp
.X_add_number
== 5)
716 if (regs
== type2_regs
)
717 return "PSW cannot be included in list";
724 else if (* input_line_pointer
== '}')
726 input_line_pointer
++;
729 else if (* input_line_pointer
== ',')
731 input_line_pointer
++;
734 else if (* input_line_pointer
== '-')
736 /* We have encountered a range of registers: rX - rY */
741 ++ input_line_pointer
;
743 /* Get the second register in the range. */
744 if (! register_name (& exp2
))
746 return "second register should follow dash in register list";
747 exp2
.X_add_number
= exp
.X_add_number
;
750 /* Add the rest of the registers in the range. */
751 for (j
= exp
.X_add_number
+ 1; j
<= exp2
.X_add_number
; j
++)
755 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
756 for (i
= 0; i
< 32; i
++)
767 return "illegal register included in list";
781 /* end-sanitize-v850e */
783 CONST
char * md_shortopts
= "m:";
785 struct option md_longopts
[] =
787 {NULL
, no_argument
, NULL
, 0}
789 size_t md_longopts_size
= sizeof md_longopts
;
793 md_show_usage (stream
)
796 fprintf (stream
, "V850 options:\n");
797 fprintf (stream
, "\t-wsigned_overflow Warn if signed immediate values overflow\n");
798 fprintf (stream
, "\t-wunsigned_overflow Warn if unsigned immediate values overflow\n");
799 fprintf (stream
, "\t-mv850 The code is targeted at the v850\n");
800 /* start-sanitize-v850e */
801 fprintf (stream
, "\t-mv850e The code is targeted at the v850e\n");
802 /* end-sanitize-v850e */
803 /* start-sanitize-v850eq */
804 fprintf (stream
, "\t-mv850eq The code is targeted at the v850eq\n");
805 /* end-sanitize-v850eq */
809 md_parse_option (c
, arg
)
816 if (strcmp (arg
, "signed_overflow") == 0)
818 warn_signed_overflows
= TRUE
;
821 else if (strcmp (arg
, "unsigned_overflow") == 0)
823 warn_unsigned_overflows
= TRUE
;
829 if (strcmp (arg
, "v850") == 0)
834 /* start-sanitize-v850e */
835 else if (strcmp (arg
, "v850e") == 0)
837 machine
= bfd_mach_v850e
;
838 processor_mask
= PROCESSOR_V850
| PROCESSOR_V850E
;
842 /* end-sanitize-v850e */
843 /* start-sanitize-v850eq */
844 else if (strcmp (arg
, "v850eq") == 0)
846 machine
= bfd_mach_v850eq
;
847 processor_mask
= PROCESSOR_V850EQ
;
850 /* end-sanitize-v850eq */
858 md_undefined_symbol (name
)
865 md_atof (type
, litp
, sizep
)
871 LITTLENUM_TYPE words
[4];
887 return "bad call to md_atof";
890 t
= atof_ieee (input_line_pointer
, type
, words
);
892 input_line_pointer
= t
;
896 for (i
= prec
- 1; i
>= 0; i
--)
898 md_number_to_chars (litp
, (valueT
) words
[i
], 2);
908 md_convert_frag (abfd
, sec
, fragP
)
913 subseg_change (sec
, 0);
914 if (fragP
->fr_subtype
== 0)
916 fix_new (fragP
, fragP
->fr_fix
, 2, fragP
->fr_symbol
,
917 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
);
921 else if (fragP
->fr_subtype
== 1)
923 /* Reverse the condition of the first branch. */
924 fragP
->fr_literal
[0] &= 0xf7;
925 /* Mask off all the displacement bits. */
926 fragP
->fr_literal
[0] &= 0x8f;
927 fragP
->fr_literal
[1] &= 0x07;
928 /* Now set the displacement bits so that we branch
929 around the unconditional branch. */
930 fragP
->fr_literal
[0] |= 0x30;
932 /* Now create the unconditional branch + fixup to the final
934 md_number_to_chars (&fragP
->fr_literal
[2], 0x00000780, 4);
935 fix_new (fragP
, fragP
->fr_fix
+ 2, 4, fragP
->fr_symbol
,
936 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
+ 1);
945 md_section_align (seg
, addr
)
949 int align
= bfd_get_section_alignment (stdoutput
, seg
);
950 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
956 char * prev_name
= "";
957 register const struct v850_opcode
* op
;
961 v850_hash
= hash_new();
963 /* Insert unique names into hash table. The V850 instruction set
964 has many identical opcode names that have different opcodes based
965 on the operands. This hash table then provides a quick index to
966 the first opcode with a particular name in the opcode table. */
971 if (strcmp (prev_name
, op
->name
))
973 prev_name
= (char *) op
->name
;
974 hash_insert (v850_hash
, op
->name
, (char *) op
);
979 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, machine
);
981 applicable
= bfd_applicable_section_flags (stdoutput
);
983 sdata_section
= subseg_new (".sdata", 0);
984 bfd_set_section_flags (stdoutput
, sdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
986 tdata_section
= subseg_new (".tdata", 0);
987 bfd_set_section_flags (stdoutput
, tdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
989 zdata_section
= subseg_new (".zdata", 0);
990 bfd_set_section_flags (stdoutput
, zdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
992 sbss_section
= subseg_new (".sbss", 0);
993 bfd_set_section_flags (stdoutput
, sbss_section
, applicable
& SEC_ALLOC
);
995 tbss_section
= subseg_new (".tbss", 0);
996 bfd_set_section_flags (stdoutput
, tbss_section
, applicable
& SEC_ALLOC
);
998 zbss_section
= subseg_new (".zbss", 0);
999 bfd_set_section_flags (stdoutput
, zbss_section
, applicable
& SEC_ALLOC
);
1001 rosdata_section
= subseg_new (".rosdata", 0);
1002 bfd_set_section_flags (stdoutput
, rosdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
1004 rozdata_section
= subseg_new (".rozdata", 0);
1005 bfd_set_section_flags (stdoutput
, rozdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
1009 /* Warning: The code in this function relies upon the definitions
1010 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1011 matching the hard coded values contained herein. */
1013 static bfd_reloc_code_real_type
1014 v850_reloc_prefix (const struct v850_operand
* operand
)
1016 boolean paren_skipped
= false;
1019 /* Skip leading opening parenthesis. */
1020 if (* input_line_pointer
== '(')
1022 ++ input_line_pointer
;
1023 paren_skipped
= true;
1026 if (strncmp (input_line_pointer
, "hi0(", 4) == 0)
1028 input_line_pointer
+= 3;
1029 return BFD_RELOC_HI16
;
1031 if (strncmp (input_line_pointer
, "hi(", 3) == 0)
1033 input_line_pointer
+= 2;
1034 return BFD_RELOC_HI16_S
;
1036 if (strncmp (input_line_pointer
, "lo(", 3) == 0)
1038 input_line_pointer
+= 2;
1039 return BFD_RELOC_LO16
;
1041 /* start-sanitize-v850e */
1042 if (strncmp (input_line_pointer
, "hilo(", 5) == 0)
1044 input_line_pointer
+= 4;
1045 return BFD_RELOC_32
;
1047 /* end-sanitize-v850e */
1049 if (strncmp (input_line_pointer
, "sdaoff(", 7) == 0)
1051 input_line_pointer
+= 6;
1053 if (operand
== NULL
) return BFD_RELOC_V850_SDA_16_16_OFFSET
;
1054 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_SDA_15_16_OFFSET
;
1055 /* start-sanitize-v850e */
1056 if (operand
->bits
== -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
;
1057 /* end-sanitize-v850e */
1059 assert (operand
->bits
== 16);
1060 assert (operand
->shift
== 16);
1062 return BFD_RELOC_V850_SDA_16_16_OFFSET
;
1065 if (strncmp (input_line_pointer
, "zdaoff(", 7) == 0)
1067 input_line_pointer
+= 6;
1069 if (operand
== NULL
) return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1070 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET
;
1071 /* start-sanitize-v850e */
1072 if (operand
->bits
== -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
;
1073 /* end-sanitize-v850e */
1075 assert (operand
->bits
== 16);
1076 assert (operand
->shift
== 16);
1078 return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1081 if (strncmp (input_line_pointer
, "tdaoff(", 7) == 0)
1083 input_line_pointer
+= 6;
1085 if (operand
== NULL
) return BFD_RELOC_V850_TDA_7_7_OFFSET
;
1086 if (operand
->bits
== 6 && operand
->shift
== 1) return BFD_RELOC_V850_TDA_6_8_OFFSET
; /* sld.w/sst.w, operand: D8_6 */
1087 /* start-sanitize-v850e */
1088 if (operand
->bits
== 4 && operand
->insert
!= NULL
) return BFD_RELOC_V850_TDA_4_5_OFFSET
; /* sld.hu, operand: D5-4 */
1089 if (operand
->bits
== 4 && operand
->insert
== NULL
) return BFD_RELOC_V850_TDA_4_4_OFFSET
; /* sld.bu, operand: D4 */
1090 /* end-sanitize-v850e */
1091 if (operand
->bits
== 16 && operand
->shift
== 16) return BFD_RELOC_V850_TDA_16_16_OFFSET
; /* set1 & chums, operands: D16 */
1093 assert (operand
->bits
== 7);
1095 return operand
->insert
!= NULL
1096 ? BFD_RELOC_V850_TDA_7_8_OFFSET
/* sld.h/sst.h, operand: D8_7 */
1097 : BFD_RELOC_V850_TDA_7_7_OFFSET
; /* sld.b/sst.b, opreand: D7 */
1101 /* Restore skipped character. */
1102 -- input_line_pointer
;
1104 return BFD_RELOC_UNUSED
;
1112 char * start_of_operands
;
1113 struct v850_opcode
* opcode
;
1114 struct v850_opcode
* next_opcode
;
1115 const unsigned char * opindex_ptr
;
1119 unsigned long insn_size
;
1123 boolean extra_data_after_insn
= false;
1124 unsigned extra_data_len
;
1125 unsigned long extra_data
;
1126 char * saved_input_line_pointer
;
1128 /* Get the opcode. */
1129 for (s
= str
; *s
!= '\0' && ! isspace (*s
); s
++)
1135 /* find the first opcode with the proper name */
1136 opcode
= (struct v850_opcode
*)hash_find (v850_hash
, str
);
1139 as_bad ("Unrecognized opcode: `%s'", str
);
1140 ignore_rest_of_line ();
1145 while (isspace (* str
))
1148 start_of_operands
= str
;
1150 saved_input_line_pointer
= input_line_pointer
;
1154 const char * errmsg
= NULL
;
1158 if ((opcode
->processors
& processor_mask
) == 0)
1160 errmsg
= "Target processor doe snot support this instruction.";
1167 insn
= opcode
->opcode
;
1168 extra_data_after_insn
= false;
1170 input_line_pointer
= str
= start_of_operands
;
1172 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1174 const struct v850_operand
* operand
;
1177 bfd_reloc_code_real_type reloc
;
1179 if (next_opindex
== 0)
1181 operand
= & v850_operands
[ * opindex_ptr
];
1185 operand
= & v850_operands
[ next_opindex
];
1191 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1194 if (operand
->flags
& V850_OPERAND_RELAX
)
1197 /* Gather the operand. */
1198 hold
= input_line_pointer
;
1199 input_line_pointer
= str
;
1201 /* fprintf (stderr, "operand: %s index = %d, opcode = %s\n", input_line_pointer, opindex_ptr - opcode->operands, opcode->name ); */
1203 /* lo(), hi(), hi0(), etc... */
1204 if ((reloc
= v850_reloc_prefix (operand
)) != BFD_RELOC_UNUSED
)
1208 if (ex
.X_op
== O_constant
)
1212 case BFD_RELOC_LO16
:
1214 /* Truncate, then sign extend the value. */
1215 ex
.X_add_number
= SEXT16 (ex
.X_add_number
);
1219 case BFD_RELOC_HI16
:
1221 /* Truncate, then sign extend the value. */
1222 ex
.X_add_number
= SEXT16 (ex
.X_add_number
>> 16);
1226 case BFD_RELOC_HI16_S
:
1228 /* Truncate, then sign extend the value. */
1229 int temp
= (ex
.X_add_number
>> 16) & 0xffff;
1231 temp
+= (ex
.X_add_number
>> 15) & 1;
1233 ex
.X_add_number
= SEXT16 (temp
);
1237 /* start-sanitize-v850e */
1239 if ((operand
->flags
& V850E_IMMEDIATE32
) == 0)
1241 errmsg
= "use bigger instruction";
1245 extra_data_after_insn
= true;
1247 extra_data
= ex
.X_add_number
;
1248 ex
.X_add_number
= 0;
1250 /* end-sanitize-v850e */
1253 as_bad ( "AAARG -> unhandled constant reloc");
1257 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1262 if (reloc
== BFD_RELOC_32
)
1264 if ((operand
->flags
& V850E_IMMEDIATE32
) == 0)
1266 errmsg
= "use bigger instruction";
1270 extra_data_after_insn
= true;
1272 extra_data
= ex
.X_add_number
;
1273 ex
.X_add_number
= 0;
1276 if (fc
> MAX_INSN_FIXUPS
)
1277 as_fatal ("too many fixups");
1279 fixups
[ fc
].exp
= ex
;
1280 fixups
[ fc
].opindex
= * opindex_ptr
;
1281 fixups
[ fc
].reloc
= reloc
;
1289 if ((operand
->flags
& V850_OPERAND_REG
) != 0)
1291 if (!register_name (& ex
))
1293 errmsg
= "invalid register name";
1296 if ((operand
->flags
& V850_NOT_R0
)
1297 && ex
.X_add_number
== 0)
1299 errmsg
= "register r0 cannot be used here";
1302 else if ((operand
->flags
& V850_OPERAND_SRG
) != 0)
1304 if (!system_register_name (& ex
, true))
1306 errmsg
= "invalid system register name";
1309 else if ((operand
->flags
& V850_OPERAND_EP
) != 0)
1311 char * start
= input_line_pointer
;
1312 char c
= get_symbol_end ();
1314 if (strcmp (start
, "ep") != 0 && strcmp (start
, "r30") != 0)
1316 /* Put things back the way we found them. */
1317 *input_line_pointer
= c
;
1318 input_line_pointer
= start
;
1319 errmsg
= "expected EP register";
1323 *input_line_pointer
= c
;
1324 str
= input_line_pointer
;
1325 input_line_pointer
= hold
;
1327 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1331 else if ((operand
->flags
& V850_OPERAND_CC
) != 0)
1333 if (!cc_name (& ex
))
1335 errmsg
= "invalid condition code name";
1338 /* start-sanitize-v850e */
1339 else if (operand
->flags
& V850E_PUSH_POP
)
1341 errmsg
= parse_register_list (& insn
, operand
);
1343 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1344 ex
.X_op
= O_constant
;
1345 ex
.X_add_number
= 0;
1347 else if (operand
->flags
& V850E_IMMEDIATE16
)
1351 if (ex
.X_op
!= O_constant
)
1352 errmsg
= "constant expression expected";
1353 else if (ex
.X_add_number
& 0xffff0000)
1355 if (ex
.X_add_number
& 0xffff)
1356 errmsg
= "constant too big to fit into instruction";
1357 else if ((insn
& 0x001fffc0) == 0x00130780)
1358 ex
.X_add_number
>>= 16;
1360 errmsg
= "constant too big to fit into instruction";
1363 extra_data_after_insn
= true;
1365 extra_data
= ex
.X_add_number
;
1366 ex
.X_add_number
= 0;
1368 else if (operand
->flags
& V850E_IMMEDIATE32
)
1372 if (ex
.X_op
!= O_constant
)
1373 errmsg
= "constant expression expected";
1375 extra_data_after_insn
= true;
1377 extra_data
= ex
.X_add_number
;
1378 ex
.X_add_number
= 0;
1380 /* end-sanitize-v850e */
1381 else if (register_name (&ex
)
1382 && (operand
->flags
& V850_OPERAND_REG
) == 0)
1384 errmsg
= "syntax error: register not expected";
1386 else if (system_register_name (& ex
, false)
1387 && (operand
->flags
& V850_OPERAND_SRG
) == 0)
1389 errmsg
= "syntax error: system register not expected";
1391 else if (cc_name (&ex
)
1392 && (operand
->flags
& V850_OPERAND_CC
) == 0)
1394 errmsg
= "syntax error: condition code not expected";
1399 /* start-sanitize-v850e */
1401 If we are assembling a MOV instruction (or a CALLT.... :-)
1402 and the immediate value does not fit into the bits available
1403 then create a fake error so that the next MOV instruction
1404 will be selected. This one has a 32 bit immediate field. */
1406 if (((insn
& 0x07e0) == 0x0200)
1407 && ex
.X_op
== O_constant
1408 && (ex
.X_add_number
< (- (1 << (operand
->bits
- 1))) || ex
.X_add_number
> ((1 << operand
->bits
) - 1)))
1409 errmsg
= "use bigger instruction";
1410 /* end-sanitize-v850e */
1416 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1421 errmsg
= "illegal operand";
1424 errmsg
= "missing operand";
1427 if ((operand
->flags
& (V850_OPERAND_REG
| V850_OPERAND_SRG
)) == 0)
1429 errmsg
= "invalid operand";
1432 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1437 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1442 /* We need to generate a fixup for this expression. */
1443 if (fc
>= MAX_INSN_FIXUPS
)
1444 as_fatal ("too many fixups");
1446 fixups
[ fc
].exp
= ex
;
1447 fixups
[ fc
].opindex
= * opindex_ptr
;
1448 fixups
[ fc
].reloc
= BFD_RELOC_UNUSED
;
1454 str
= input_line_pointer
;
1455 input_line_pointer
= hold
;
1457 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']'
1466 next_opcode
= opcode
+ 1;
1467 if (next_opcode
->name
!= NULL
&& strcmp (next_opcode
->name
, opcode
->name
) == 0)
1469 opcode
= next_opcode
;
1474 ignore_rest_of_line ();
1475 input_line_pointer
= saved_input_line_pointer
;
1481 while (isspace (*str
))
1485 as_bad ("junk at end of line: `%s'", str
);
1487 input_line_pointer
= str
;
1489 /* Write out the instruction.
1491 Four byte insns have an opcode with the two high bits on. */
1492 if (relaxable
&& fc
> 0)
1494 f
= frag_var (rs_machine_dependent
, 6, 4, 0,
1495 fixups
[0].exp
.X_add_symbol
,
1496 fixups
[0].exp
.X_add_number
,
1497 (char *)fixups
[0].opindex
);
1499 md_number_to_chars (f
, insn
, insn_size
);
1500 md_number_to_chars (f
+ 2, 0, 4);
1505 if ((insn
& 0x0600) == 0x0600)
1510 /* start-sanitize-v850e */
1511 /* Special case: 32 bit MOV */
1512 if ((insn
& 0xffe0) == 0x0620)
1514 /* end-sanitize-v850e */
1516 f
= frag_more (insn_size
);
1518 md_number_to_chars (f
, insn
, insn_size
);
1520 if (extra_data_after_insn
)
1522 f
= frag_more (extra_data_len
);
1524 md_number_to_chars (f
, extra_data
, extra_data_len
);
1526 extra_data_after_insn
= false;
1530 /* Create any fixups. At this point we do not use a
1531 bfd_reloc_code_real_type, but instead just use the
1532 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1533 handle fixups for any operand type, although that is admittedly
1534 not a very exciting feature. We pick a BFD reloc type in
1536 for (i
= 0; i
< fc
; i
++)
1538 const struct v850_operand
* operand
;
1539 bfd_reloc_code_real_type reloc
;
1541 operand
= & v850_operands
[ fixups
[i
].opindex
];
1543 reloc
= fixups
[i
].reloc
;
1545 if (reloc
!= BFD_RELOC_UNUSED
)
1547 reloc_howto_type
* reloc_howto
= bfd_reloc_type_lookup (stdoutput
, reloc
);
1555 size
= bfd_get_reloc_size (reloc_howto
);
1557 if (size
!= 2 && size
!= 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1560 address
= (f
- frag_now
->fr_literal
) + insn_size
- size
;
1562 if (reloc
== BFD_RELOC_32
)
1567 fixP
= fix_new_exp (frag_now
, address
, size
,
1569 reloc_howto
->pc_relative
,
1574 case BFD_RELOC_LO16
:
1575 case BFD_RELOC_HI16
:
1576 case BFD_RELOC_HI16_S
:
1577 fixP
->fx_no_overflow
= 1;
1585 f
- frag_now
->fr_literal
, 4,
1587 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1588 (bfd_reloc_code_real_type
) (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)
1593 input_line_pointer
= saved_input_line_pointer
;
1597 /* If while processing a fixup, a reloc really needs to be created */
1598 /* then it is done here. */
1601 tc_gen_reloc (seg
, fixp
)
1607 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1608 reloc
->sym_ptr_ptr
= & fixp
->fx_addsy
->bsym
;
1609 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1610 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1612 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1614 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1615 "reloc %d not supported by object file format", (int)fixp
->fx_r_type
);
1622 reloc
->addend
= fixp
->fx_addnumber
;
1627 /* Assume everything will fit in two bytes, then expand as necessary. */
1629 md_estimate_size_before_relax (fragp
, seg
)
1638 md_pcrel_from (fixp
)
1641 /* If the symbol is undefined, or in a section other than our own,
1642 then let the linker figure it out. */
1643 if (fixp
->fx_addsy
!= (symbolS
*) NULL
&& ! S_IS_DEFINED (fixp
->fx_addsy
))
1645 /* The symbol is undefined. Let the linker figure it out. */
1648 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1652 md_apply_fix3 (fixp
, valuep
, seg
)
1660 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1665 else if (fixp
->fx_pcrel
)
1669 value
= fixp
->fx_offset
;
1670 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1672 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1673 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1676 /* We don't actually support subtracting a symbol. */
1677 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1678 "expression too complex");
1683 if ((int) fixp
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
1686 const struct v850_operand
* operand
;
1689 opindex
= (int) fixp
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
1690 operand
= & v850_operands
[ opindex
];
1692 /* Fetch the instruction, insert the fully resolved operand
1693 value, and stuff the instruction back again.
1695 Note the instruction has been stored in little endian
1697 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1699 insn
= bfd_getl32 ((unsigned char *) where
);
1700 insn
= v850_insert_operand (insn
, operand
, (offsetT
) value
,
1701 fixp
->fx_file
, fixp
->fx_line
);
1702 bfd_putl32 ((bfd_vma
) insn
, (unsigned char *) where
);
1706 /* Nothing else to do here. */
1710 /* Determine a BFD reloc value based on the operand information.
1711 We are only prepared to turn a few of the operands into relocs. */
1713 if (operand
->bits
== 22)
1714 fixp
->fx_r_type
= BFD_RELOC_V850_22_PCREL
;
1715 else if (operand
->bits
== 9)
1716 fixp
->fx_r_type
= BFD_RELOC_V850_9_PCREL
;
1719 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
1721 as_bad_where(fixp
->fx_file
, fixp
->fx_line
,
1722 "unresolved expression that must be resolved");
1727 else if (fixp
->fx_done
)
1729 /* We still have to insert the value into memory! */
1730 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1731 if (fixp
->fx_size
== 1)
1732 *where
= value
& 0xff;
1733 else if (fixp
->fx_size
== 2)
1734 bfd_putl16 (value
& 0xffff, (unsigned char *) where
);
1735 else if (fixp
->fx_size
== 4)
1736 bfd_putl32 (value
, (unsigned char *) where
);
1739 fixp
->fx_addnumber
= value
;
1744 /* Insert an operand value into an instruction. */
1746 static unsigned long
1747 v850_insert_operand (insn
, operand
, val
, file
, line
)
1749 const struct v850_operand
* operand
;
1754 if (operand
->insert
)
1756 const char * message
= NULL
;
1758 insn
= (*operand
->insert
) (insn
, val
, & message
);
1759 if (message
!= NULL
)
1761 if (file
== (char *) NULL
)
1764 as_warn_where (file
, line
, message
);
1769 if (operand
->bits
!= 32)
1774 if ((operand
->flags
& V850_OPERAND_SIGNED
) != 0)
1776 if (! warn_signed_overflows
)
1777 max
= (1 << operand
->bits
) - 1;
1779 max
= (1 << (operand
->bits
- 1)) - 1;
1781 min
= - (1 << (operand
->bits
- 1));
1785 max
= (1 << operand
->bits
) - 1;
1787 if (! warn_unsigned_overflows
)
1788 min
= - (1 << (operand
->bits
- 1));
1795 if (test
< (offsetT
) min
|| test
> (offsetT
) max
)
1797 const char * err
= "operand out of range (%s not between %ld and %ld)";
1800 sprint_value (buf
, test
);
1801 if (file
== (char *) NULL
)
1802 as_warn (err
, buf
, min
, max
);
1804 as_warn_where (file
, line
, err
, buf
, min
, max
);
1808 insn
|= (((long) val
& ((1 << operand
->bits
) - 1)) << operand
->shift
);
1814 /* Parse a cons expression. We have to handle hi(), lo(), etc
1817 parse_cons_expression_v850 (exp
)
1820 /* See if there's a reloc prefix like hi() we have to handle. */
1821 hold_cons_reloc
= v850_reloc_prefix (NULL
);
1823 /* Do normal expression parsing. */
1827 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1828 found a reloc prefix, then we use that reloc, else we choose an
1829 appropriate one based on the size of the expression. */
1831 cons_fix_new_v850 (frag
, where
, size
, exp
)
1837 if (hold_cons_reloc
== BFD_RELOC_UNUSED
)
1840 hold_cons_reloc
= BFD_RELOC_32
;
1842 hold_cons_reloc
= BFD_RELOC_16
;
1844 hold_cons_reloc
= BFD_RELOC_8
;
1848 fix_new_exp (frag
, where
, size
, exp
, 0, hold_cons_reloc
);
1850 fix_new (frag
, where
, size
, NULL
, 0, 0, hold_cons_reloc
);