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
;
37 /* Structure to hold information about predefined registers. */
44 /* Generic assembler global variables which must be defined by all targets. */
46 /* Characters which always start a comment. */
47 const char comment_chars
[] = "#";
49 /* Characters which start a comment at the beginning of a line. */
50 const char line_comment_chars
[] = ";#";
52 /* Characters which may be used to separate multiple commands on a
54 const char line_separator_chars
[] = ";";
56 /* Characters which are used to indicate an exponent in a floating
58 const char EXP_CHARS
[] = "eE";
60 /* Characters which mean that a number is a floating point constant,
62 const char FLT_CHARS
[] = "dD";
65 const relax_typeS md_relax_table
[] = {
67 {0x1fffff, -0x200000, 6, 0},
71 static segT sdata_section
= NULL
;
72 static segT tdata_section
= NULL
;
73 static segT zdata_section
= NULL
;
74 static segT sbss_section
= NULL
;
75 static segT tbss_section
= NULL
;
76 static segT zbss_section
= NULL
;
77 static segT rosdata_section
= NULL
;
78 static segT rozdata_section
= NULL
;
82 static unsigned long v850_insert_operand
83 PARAMS ((unsigned long insn
, const struct v850_operand
*operand
,
84 offsetT val
, char *file
, unsigned int line
));
88 #define MAX_INSN_FIXUPS (5)
93 bfd_reloc_code_real_type reloc
;
95 struct v850_fixup fixups
[MAX_INSN_FIXUPS
];
99 v850_sdata (int ignore
)
101 subseg_set (sdata_section
, (subsegT
) get_absolute_expression ());
103 demand_empty_rest_of_line ();
107 v850_tdata (int ignore
)
109 subseg_set (tdata_section
, (subsegT
) get_absolute_expression ());
111 demand_empty_rest_of_line ();
115 v850_zdata (int ignore
)
117 subseg_set (zdata_section
, (subsegT
) get_absolute_expression ());
119 demand_empty_rest_of_line ();
123 v850_sbss (int ignore
)
125 subseg_set (sbss_section
, (subsegT
) get_absolute_expression ());
127 demand_empty_rest_of_line ();
131 v850_tbss (int ignore
)
133 subseg_set (tbss_section
, (subsegT
) get_absolute_expression ());
135 demand_empty_rest_of_line ();
139 v850_zbss (int ignore
)
141 subseg_set (zbss_section
, (subsegT
) get_absolute_expression ());
143 demand_empty_rest_of_line ();
147 v850_rosdata (int ignore
)
149 subseg_set (rosdata_section
, (subsegT
) get_absolute_expression ());
151 demand_empty_rest_of_line ();
155 v850_rozdata (int ignore
)
157 subseg_set (rozdata_section
, (subsegT
) get_absolute_expression ());
159 demand_empty_rest_of_line ();
163 v850_section (int arg
)
168 for (ptr
= input_line_pointer
; * ptr
!= '\n' && * ptr
!= 0; ptr
++)
169 if (* ptr
== ',' && ptr
[1] == '.')
175 obj_elf_section (arg
);
181 v850_bss (int ignore
)
183 register int temp
= get_absolute_expression ();
185 obj_elf_section_change_hook();
187 subseg_set (bss_section
, (subsegT
) temp
);
189 demand_empty_rest_of_line ();
193 v850_offset (int ignore
)
195 int temp
= get_absolute_expression ();
197 temp
-= frag_now_fix();
200 (void) frag_more (temp
);
202 demand_empty_rest_of_line ();
205 /* The target specific pseudo-ops which we support. */
206 const pseudo_typeS md_pseudo_table
[] =
208 {"sdata", v850_sdata
, 0},
209 {"tdata", v850_tdata
, 0},
210 {"zdata", v850_zdata
, 0},
211 {"sbss", v850_sbss
, 0},
212 {"tbss", v850_tbss
, 0},
213 {"zbss", v850_zbss
, 0},
214 {"rosdata", v850_rosdata
, 0},
215 {"rozdata", v850_rozdata
, 0},
216 {"bss", v850_bss
, 0},
217 {"offset", v850_offset
, 0},
218 {"section", v850_section
, 0},
223 /* Opcode hash table. */
224 static struct hash_control
*v850_hash
;
226 /* This table is sorted. Suitable for searching by a binary search. */
227 static const struct reg_name pre_defined_registers
[] =
229 { "ep", 30 }, /* ep - element ptr */
230 { "gp", 4 }, /* gp - global ptr */
231 { "hp", 2 }, /* hp - handler stack ptr */
232 { "lp", 31 }, /* lp - link ptr */
265 { "sp", 3 }, /* sp - stack ptr */
266 { "tp", 5 }, /* tp - text ptr */
269 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
272 static const struct reg_name system_registers
[] =
274 /* start-sanitize-v850e */
280 /* end-sanitize-v850e */
288 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
290 static const struct reg_name cc_names
[] =
315 #define CC_NAME_CNT (sizeof(cc_names) / sizeof(struct reg_name))
317 /* reg_name_search does a binary search of the given register table
318 to see if "name" is a valid regiter name. Returns the register
319 number from the array on success, or -1 on failure. */
322 reg_name_search (regs
, regcount
, name
)
323 const struct reg_name
* regs
;
327 int middle
, low
, high
;
335 middle
= (low
+ high
) / 2;
336 cmp
= strcasecmp (name
, regs
[middle
].name
);
342 return regs
[middle
].value
;
349 /* Summary of register_name().
351 * in: Input_line_pointer points to 1st char of operand.
353 * out: A expressionS.
354 * The operand may have been a register: in this case, X_op == O_register,
355 * X_add_number is set to the register number, and truth is returned.
356 * Input_line_pointer->(next non-blank) char after operand, or is in
357 * its original state.
360 register_name (expressionP
)
361 expressionS
* expressionP
;
368 /* Find the spelling of the operand */
369 start
= name
= input_line_pointer
;
371 c
= get_symbol_end ();
373 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
375 * input_line_pointer
= c
; /* put back the delimiting char */
377 /* look to see if it's in the register table */
380 expressionP
->X_op
= O_register
;
381 expressionP
->X_add_number
= reg_number
;
383 /* make the rest nice */
384 expressionP
->X_add_symbol
= NULL
;
385 expressionP
->X_op_symbol
= NULL
;
391 /* reset the line as if we had not done anything */
392 input_line_pointer
= start
;
398 /* Summary of system_register_name().
400 * in: Input_line_pointer points to 1st char of operand.
402 * out: A expressionS.
403 * The operand may have been a register: in this case, X_op == O_register,
404 * X_add_number is set to the register number, and truth is returned.
405 * Input_line_pointer->(next non-blank) char after operand, or is in
406 * its original state.
409 system_register_name (expressionP
, accept_numbers
)
410 expressionS
* expressionP
;
411 boolean accept_numbers
;
418 /* Find the spelling of the operand */
419 start
= name
= input_line_pointer
;
421 c
= get_symbol_end ();
422 reg_number
= reg_name_search (system_registers
, SYSREG_NAME_CNT
, name
);
424 * input_line_pointer
= c
; /* put back the delimiting char */
429 input_line_pointer
= start
; /* reset input_line pointer */
431 if (isdigit (* input_line_pointer
))
432 reg_number
= strtol (input_line_pointer
, & input_line_pointer
, 10);
434 /* Make sure that the register number is allowable. */
437 /* start-sanitize-v850e */
440 /* end-sanitize-v850e */
447 /* look to see if it's in the register table */
450 expressionP
->X_op
= O_register
;
451 expressionP
->X_add_number
= reg_number
;
453 /* make the rest nice */
454 expressionP
->X_add_symbol
= NULL
;
455 expressionP
->X_op_symbol
= NULL
;
461 /* reset the line as if we had not done anything */
462 input_line_pointer
= start
;
468 /* Summary of cc_name().
470 * in: Input_line_pointer points to 1st char of operand.
472 * out: A expressionS.
473 * The operand may have been a register: in this case, X_op == O_register,
474 * X_add_number is set to the register number, and truth is returned.
475 * Input_line_pointer->(next non-blank) char after operand, or is in
476 * its original state.
479 cc_name (expressionP
)
480 expressionS
*expressionP
;
487 /* Find the spelling of the operand */
488 start
= name
= input_line_pointer
;
490 c
= get_symbol_end ();
491 reg_number
= reg_name_search (cc_names
, CC_NAME_CNT
, name
);
493 * input_line_pointer
= c
; /* put back the delimiting char */
495 /* look to see if it's in the register table */
498 expressionP
->X_op
= O_constant
;
499 expressionP
->X_add_number
= reg_number
;
501 /* make the rest nice */
502 expressionP
->X_add_symbol
= NULL
;
503 expressionP
->X_op_symbol
= NULL
;
509 /* reset the line as if we had not done anything */
510 input_line_pointer
= start
;
517 skip_white_space (void)
519 while ( * input_line_pointer
== ' '
520 || * input_line_pointer
== '\t')
521 ++ input_line_pointer
;
524 /* start-sanitize-v850e */
525 /* Summary of parse_register_list ().
527 * in: Input_line_pointer points to 1st char of a list of registers.
528 * insn is the partially constructed instruction.
529 * operand is the operand being inserted.
531 * out: True if the parse completed successfully, False otherwise.
532 * If the parse completes the correct bit fields in the
533 * instruction will be filled in.
535 * Parses register lists with the syntax:
543 * and also parses constant epxressions whoes bits indicate the
544 * registers in the lists. The LSB in the expression refers to
545 * the lowest numbered permissable register in the register list,
546 * and so on upwards. System registers are considered to be very
553 unsigned long * insn
,
554 const struct v850_operand
* operand
557 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 };
558 /* start-sanitize-v850eq */
559 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 };
560 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 };
561 /* end-sanitize-v850eq */
566 /* Select a register array to parse. */
567 switch (operand
->shift
)
569 case 0xffe00001: regs
= type1_regs
; break;
570 /* start-sanitize-v850eq */
571 case 0xfff8000f: regs
= type2_regs
; break;
572 case 0xfff8001f: regs
= type3_regs
; break;
573 /* end-sanitize-v850eq */
575 as_bad ("unknown operand shift: %x\n", operand
->shift
);
576 return "internal failure in parse_register_list";
581 /* If the expression starts with a curly brace it is a register list.
582 Otherwise it is a constant expression ,whoes bits indicate which
583 registers are to be included in the list. */
585 if (* input_line_pointer
!= '{')
593 if (exp
.X_op
!= O_constant
)
594 return "constant expression or register list expected";
596 /* start-sanitize-v850eq */
597 if (regs
== type1_regs
)
598 /* end-sanitize-v850eq */
600 if (exp
.X_add_number
& 0xFFFFF000)
601 return "high bits set in register list expression";
603 for (reg
= 20; reg
< 32; reg
++)
604 if (exp
.X_add_number
& (1 << (reg
- 20)))
606 for (i
= 0; i
< 32; i
++)
611 /* start-sanitize-v850eq */
612 else if (regs
== type2_regs
)
614 if (exp
.X_add_number
& 0xFFFE0000)
615 return "high bits set in register list expression";
617 for (reg
= 1; reg
< 16; reg
++)
618 if (exp
.X_add_number
& (1 << (reg
- 1)))
620 for (i
= 0; i
< 32; i
++)
625 if (exp
.X_add_number
& (1 << 15))
628 if (exp
.X_add_number
& (1 << 16))
631 else /* regs == type3_regs */
633 if (exp
.X_add_number
& 0xFFFE0000)
634 return "high bits set in register list expression";
636 for (reg
= 16; reg
< 32; reg
++)
637 if (exp
.X_add_number
& (1 << (reg
- 16)))
639 for (i
= 0; i
< 32; i
++)
644 if (exp
.X_add_number
& (1 << 16))
647 /* end-sanitize-v850eq */
652 input_line_pointer
++;
654 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
657 if (register_name (& exp
))
661 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
662 for (i
= 0; i
< 32; i
++)
664 if (regs
[ i
] == exp
.X_add_number
)
673 return "illegal register included in list";
676 else if (system_register_name (& exp
, true))
678 if (regs
== type1_regs
)
680 return "system registers cannot be included in list";
682 else if (exp
.X_add_number
== 5)
684 if (regs
== type2_regs
)
685 return "PSW cannot be included in list";
692 else if (* input_line_pointer
== '}')
694 input_line_pointer
++;
697 else if (* input_line_pointer
== ',')
699 input_line_pointer
++;
702 else if (* input_line_pointer
== '-')
704 /* We have encountered a range of registers: rX - rY */
709 ++ input_line_pointer
;
711 /* Get the second register in the range. */
712 if (! register_name (& exp2
))
714 return "second register should follow dash in register list";
715 exp2
.X_add_number
= exp
.X_add_number
;
718 /* Add the rest of the registers in the range. */
719 for (j
= exp
.X_add_number
+ 1; j
<= exp2
.X_add_number
; j
++)
723 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
724 for (i
= 0; i
< 32; i
++)
735 return "illegal register included in list";
749 /* end-sanitize-v850e */
751 CONST
char * md_shortopts
= "m:";
753 struct option md_longopts
[] =
755 {NULL
, no_argument
, NULL
, 0}
757 size_t md_longopts_size
= sizeof md_longopts
;
761 md_show_usage (stream
)
764 fprintf (stream
, "V850 options:\n");
765 fprintf (stream
, "\t-wsigned_overflow Warn if signed immediate values overflow\n");
769 md_parse_option (c
, arg
)
773 if (c
== 'w' && strcmp (arg
, "signed_overflow") == 0)
775 warn_signed_overflows
= TRUE
;
783 md_undefined_symbol (name
)
790 md_atof (type
, litp
, sizep
)
796 LITTLENUM_TYPE words
[4];
812 return "bad call to md_atof";
815 t
= atof_ieee (input_line_pointer
, type
, words
);
817 input_line_pointer
= t
;
821 for (i
= prec
- 1; i
>= 0; i
--)
823 md_number_to_chars (litp
, (valueT
) words
[i
], 2);
833 md_convert_frag (abfd
, sec
, fragP
)
838 subseg_change (sec
, 0);
839 if (fragP
->fr_subtype
== 0)
841 fix_new (fragP
, fragP
->fr_fix
, 2, fragP
->fr_symbol
,
842 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
);
846 else if (fragP
->fr_subtype
== 1)
848 /* Reverse the condition of the first branch. */
849 fragP
->fr_literal
[0] &= 0xf7;
850 /* Mask off all the displacement bits. */
851 fragP
->fr_literal
[0] &= 0x8f;
852 fragP
->fr_literal
[1] &= 0x07;
853 /* Now set the displacement bits so that we branch
854 around the unconditional branch. */
855 fragP
->fr_literal
[0] |= 0x30;
857 /* Now create the unconditional branch + fixup to the final
859 md_number_to_chars (&fragP
->fr_literal
[2], 0x00000780, 4);
860 fix_new (fragP
, fragP
->fr_fix
+ 2, 4, fragP
->fr_symbol
,
861 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
+ 1);
870 md_section_align (seg
, addr
)
874 int align
= bfd_get_section_alignment (stdoutput
, seg
);
875 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
881 char * prev_name
= "";
882 register const struct v850_opcode
* op
;
886 v850_hash
= hash_new();
888 /* Insert unique names into hash table. The V850 instruction set
889 has many identical opcode names that have different opcodes based
890 on the operands. This hash table then provides a quick index to
891 the first opcode with a particular name in the opcode table. */
896 if (strcmp (prev_name
, op
->name
))
898 prev_name
= (char *) op
->name
;
899 hash_insert (v850_hash
, op
->name
, (char *) op
);
904 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, 0);
905 /* start-sanitize-v850e */
906 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, bfd_mach_v850e
);
907 /* end-sanitize-v850e */
908 /* start-sanitize-v850eq */
909 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, bfd_mach_v850eq
);
910 /* end-sanitize-v850eq */
912 applicable
= bfd_applicable_section_flags (stdoutput
);
914 sdata_section
= subseg_new (".sdata", 0);
915 bfd_set_section_flags (stdoutput
, sdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
917 tdata_section
= subseg_new (".tdata", 0);
918 bfd_set_section_flags (stdoutput
, tdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
920 zdata_section
= subseg_new (".zdata", 0);
921 bfd_set_section_flags (stdoutput
, zdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
923 sbss_section
= subseg_new (".sbss", 0);
924 bfd_set_section_flags (stdoutput
, sbss_section
, applicable
& SEC_ALLOC
);
926 tbss_section
= subseg_new (".tbss", 0);
927 bfd_set_section_flags (stdoutput
, tbss_section
, applicable
& SEC_ALLOC
);
929 zbss_section
= subseg_new (".zbss", 0);
930 bfd_set_section_flags (stdoutput
, zbss_section
, applicable
& SEC_ALLOC
);
932 rosdata_section
= subseg_new (".rosdata", 0);
933 bfd_set_section_flags (stdoutput
, rosdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
935 rozdata_section
= subseg_new (".rozdata", 0);
936 bfd_set_section_flags (stdoutput
, rozdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
940 /* Warning: The code in this function relies upon the definitions
941 in the v850_operands[] array (defined in opcodes/v850-opc.c)
942 matching the hard coded values conatined herein. */
944 static bfd_reloc_code_real_type
945 v850_reloc_prefix (const struct v850_operand
* operand
)
947 boolean paren_skipped
= false;
950 /* Skip leading opening parenthesis. */
951 if (* input_line_pointer
== '(')
953 ++ input_line_pointer
;
954 paren_skipped
= true;
957 if (strncmp (input_line_pointer
, "hi0(", 4) == 0)
959 input_line_pointer
+= 3;
960 return BFD_RELOC_HI16
;
962 if (strncmp (input_line_pointer
, "hi(", 3) == 0)
964 input_line_pointer
+= 2;
965 return BFD_RELOC_HI16_S
;
967 if (strncmp (input_line_pointer
, "lo(", 3) == 0)
969 input_line_pointer
+= 2;
970 return BFD_RELOC_LO16
;
973 if (strncmp (input_line_pointer
, "sdaoff(", 7) == 0)
975 input_line_pointer
+= 6;
977 if (operand
== NULL
) return BFD_RELOC_V850_SDA_16_16_OFFSET
;
978 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_SDA_15_16_OFFSET
;
979 /* start-sanitize-v850e */
980 if (operand
->bits
== -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
;
981 /* end-sanitize-v850e */
983 assert (operand
->bits
== 16);
984 assert (operand
->shift
== 16);
986 return BFD_RELOC_V850_SDA_16_16_OFFSET
;
989 if (strncmp (input_line_pointer
, "zdaoff(", 7) == 0)
991 input_line_pointer
+= 6;
993 if (operand
== NULL
) return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
994 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET
;
995 /* start-sanitize-v850e */
996 if (operand
->bits
== -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
;
997 /* end-sanitize-v850e */
999 assert (operand
->bits
== 16);
1000 assert (operand
->shift
== 16);
1002 return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1005 if (strncmp (input_line_pointer
, "tdaoff(", 7) == 0)
1007 input_line_pointer
+= 6;
1009 if (operand
== NULL
) return BFD_RELOC_V850_TDA_7_7_OFFSET
;
1010 if (operand
->bits
== 6 && operand
->shift
== 1) return BFD_RELOC_V850_TDA_6_8_OFFSET
;
1011 /* start-sanitize-v850e */
1012 if (operand
->bits
== 4 && operand
->insert
!= NULL
) return BFD_RELOC_V850_TDA_4_5_OFFSET
;
1013 if (operand
->bits
== 4 && operand
->insert
== NULL
) return BFD_RELOC_V850_TDA_4_4_OFFSET
;
1014 /* end-sanitize-v850e */
1016 assert (operand
->bits
== 7);
1018 return operand
->insert
!= NULL
? BFD_RELOC_V850_TDA_7_8_OFFSET
: BFD_RELOC_V850_TDA_7_7_OFFSET
;
1022 /* Restore skipped character. */
1023 -- input_line_pointer
;
1025 return BFD_RELOC_UNUSED
;
1033 char * start_of_operands
;
1034 struct v850_opcode
* opcode
;
1035 struct v850_opcode
* next_opcode
;
1036 const unsigned char * opindex_ptr
;
1040 unsigned long insn_size
;
1044 boolean extra_data_after_insn
= false;
1045 unsigned extra_data_len
;
1046 unsigned long extra_data
;
1047 char * saved_input_line_pointer
;
1049 /* Get the opcode. */
1050 for (s
= str
; *s
!= '\0' && ! isspace (*s
); s
++)
1056 /* find the first opcode with the proper name */
1057 opcode
= (struct v850_opcode
*)hash_find (v850_hash
, str
);
1060 as_bad ("Unrecognized opcode: `%s'", str
);
1061 ignore_rest_of_line ();
1066 while (isspace (* str
))
1069 start_of_operands
= str
;
1071 saved_input_line_pointer
= input_line_pointer
;
1075 const char * errmsg
= NULL
;
1081 insn
= opcode
->opcode
;
1082 extra_data_after_insn
= false;
1084 input_line_pointer
= str
= start_of_operands
;
1086 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1088 const struct v850_operand
* operand
;
1091 bfd_reloc_code_real_type reloc
;
1093 if (next_opindex
== 0)
1095 operand
= & v850_operands
[ * opindex_ptr
];
1099 operand
= & v850_operands
[ next_opindex
];
1105 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1108 if (operand
->flags
& V850_OPERAND_RELAX
)
1111 /* Gather the operand. */
1112 hold
= input_line_pointer
;
1113 input_line_pointer
= str
;
1115 /* fprintf (stderr, "operand: %s index = %d, opcode = %s\n", input_line_pointer, opindex_ptr - opcode->operands, opcode->name ); */
1117 /* lo(), hi(), hi0(), etc... */
1118 if ((reloc
= v850_reloc_prefix (operand
)) != BFD_RELOC_UNUSED
)
1122 if (ex
.X_op
== O_constant
)
1126 case BFD_RELOC_LO16
:
1128 /* Truncate, then sign extend the value. */
1129 ex
.X_add_number
= SEXT16 (ex
.X_add_number
);
1133 case BFD_RELOC_HI16
:
1135 /* Truncate, then sign extend the value. */
1136 ex
.X_add_number
= SEXT16 (ex
.X_add_number
>> 16);
1140 case BFD_RELOC_HI16_S
:
1142 /* Truncate, then sign extend the value. */
1143 int temp
= (ex
.X_add_number
>> 16) & 0xffff;
1145 temp
+= (ex
.X_add_number
>> 15) & 1;
1147 ex
.X_add_number
= SEXT16 (temp
);
1152 as_bad ( "AAARG -> unhandled constant reloc");
1156 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1161 if (fc
> MAX_INSN_FIXUPS
)
1162 as_fatal ("too many fixups");
1164 fixups
[ fc
].exp
= ex
;
1165 fixups
[ fc
].opindex
= * opindex_ptr
;
1166 fixups
[ fc
].reloc
= reloc
;
1174 if ((operand
->flags
& V850_OPERAND_REG
) != 0)
1176 if (!register_name (& ex
))
1178 errmsg
= "invalid register name";
1181 if ((operand
->flags
& V850_NOT_R0
)
1182 && ex
.X_add_number
== 0)
1184 errmsg
= "register r0 cannot be used here";
1187 else if ((operand
->flags
& V850_OPERAND_SRG
) != 0)
1189 if (!system_register_name (& ex
, true))
1191 errmsg
= "invalid system register name";
1194 else if ((operand
->flags
& V850_OPERAND_EP
) != 0)
1196 char * start
= input_line_pointer
;
1197 char c
= get_symbol_end ();
1199 if (strcmp (start
, "ep") != 0 && strcmp (start
, "r30") != 0)
1201 /* Put things back the way we found them. */
1202 *input_line_pointer
= c
;
1203 input_line_pointer
= start
;
1204 errmsg
= "expected EP register";
1208 *input_line_pointer
= c
;
1209 str
= input_line_pointer
;
1210 input_line_pointer
= hold
;
1212 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1216 else if ((operand
->flags
& V850_OPERAND_CC
) != 0)
1218 if (!cc_name (& ex
))
1220 errmsg
= "invalid condition code name";
1223 /* start-sanitize-v850e */
1224 else if (operand
->flags
& V850E_PUSH_POP
)
1226 errmsg
= parse_register_list (& insn
, operand
);
1228 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1229 ex
.X_op
= O_constant
;
1230 ex
.X_add_number
= 0;
1232 /* end-sanitize-v850e */
1233 /* start-sanitize-v850e */
1234 else if (operand
->flags
& V850E_IMMEDIATE16
)
1238 if (ex
.X_op
!= O_constant
)
1239 errmsg
= "constant expression expected";
1240 else if (ex
.X_add_number
& 0xffff0000)
1242 if (ex
.X_add_number
& 0xffff)
1243 errmsg
= "constant too big to fit into instruction";
1244 else if ((insn
& 0x001fffc0) == 0x00130780)
1245 ex
.X_add_number
>>= 16;
1247 errmsg
= "constant too big to fit into instruction";
1250 extra_data_after_insn
= true;
1252 extra_data
= ex
.X_add_number
;
1253 ex
.X_add_number
= 0;
1255 /* end-sanitize-v850e */
1256 /* start-sanitize-v850e */
1257 else if (operand
->flags
& V850E_IMMEDIATE32
)
1261 if (ex
.X_op
!= O_constant
)
1262 errmsg
= "constant expression expected";
1264 extra_data_after_insn
= true;
1266 extra_data
= ex
.X_add_number
;
1267 ex
.X_add_number
= 0;
1269 /* end-sanitize-v850e */
1270 else if (register_name (&ex
)
1271 && (operand
->flags
& V850_OPERAND_REG
) == 0)
1273 errmsg
= "syntax error: register not expected";
1275 else if (system_register_name (& ex
, false)
1276 && (operand
->flags
& V850_OPERAND_SRG
) == 0)
1278 errmsg
= "syntax error: system register not expected";
1280 else if (cc_name (&ex
)
1281 && (operand
->flags
& V850_OPERAND_CC
) == 0)
1283 errmsg
= "syntax error: condition code not expected";
1288 /* start-sanitize-v850e */
1290 If we are assembling a MOV instruction (or a CALLT.... :-)
1291 and the immediate value does not fit into the bits available
1292 then create a fake error so that the next MOV instruction
1293 will be selected. This one has a 32 bit immediate field. */
1295 if (((insn
& 0x07e0) == 0x0200)
1296 && ex
.X_op
== O_constant
1297 && (ex
.X_add_number
< (- (1 << (operand
->bits
- 1))) || ex
.X_add_number
> ((1 << operand
->bits
) - 1)))
1298 errmsg
= "use bigger instruction";
1299 /* end-sanitize-v850e */
1305 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1310 errmsg
= "illegal operand";
1313 errmsg
= "missing operand";
1316 if ((operand
->flags
& (V850_OPERAND_REG
| V850_OPERAND_SRG
)) == 0)
1318 errmsg
= "invalid operand";
1321 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1326 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1331 /* We need to generate a fixup for this expression. */
1332 if (fc
>= MAX_INSN_FIXUPS
)
1333 as_fatal ("too many fixups");
1335 fixups
[ fc
].exp
= ex
;
1336 fixups
[ fc
].opindex
= * opindex_ptr
;
1337 fixups
[ fc
].reloc
= BFD_RELOC_UNUSED
;
1343 str
= input_line_pointer
;
1344 input_line_pointer
= hold
;
1346 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']'
1355 next_opcode
= opcode
+ 1;
1356 if (next_opcode
->name
!= NULL
&& strcmp (next_opcode
->name
, opcode
->name
) == 0)
1358 opcode
= next_opcode
;
1363 ignore_rest_of_line ();
1364 input_line_pointer
= saved_input_line_pointer
;
1370 while (isspace (*str
))
1374 as_bad ("junk at end of line: `%s'", str
);
1376 input_line_pointer
= str
;
1378 /* Write out the instruction.
1380 Four byte insns have an opcode with the two high bits on. */
1381 if (relaxable
&& fc
> 0)
1383 f
= frag_var (rs_machine_dependent
, 6, 4, 0,
1384 fixups
[0].exp
.X_add_symbol
,
1385 fixups
[0].exp
.X_add_number
,
1386 (char *)fixups
[0].opindex
);
1388 md_number_to_chars (f
, insn
, insn_size
);
1389 md_number_to_chars (f
+ 2, 0, 4);
1394 if ((insn
& 0x0600) == 0x0600)
1399 /* start-sanitize-v850e */
1400 /* Special case: 32 bit MOV */
1401 if ((insn
& 0xffe0) == 0x0620)
1403 /* end_sanitize-v850e */
1405 f
= frag_more (insn_size
);
1407 md_number_to_chars (f
, insn
, insn_size
);
1409 if (extra_data_after_insn
)
1411 char * g
= frag_more (extra_data_len
);
1413 md_number_to_chars (g
, extra_data
, extra_data_len
);
1415 extra_data_after_insn
= false;
1419 /* Create any fixups. At this point we do not use a
1420 bfd_reloc_code_real_type, but instead just use the
1421 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1422 handle fixups for any operand type, although that is admittedly
1423 not a very exciting feature. We pick a BFD reloc type in
1425 for (i
= 0; i
< fc
; i
++)
1427 const struct v850_operand
* operand
;
1429 operand
= & v850_operands
[ fixups
[i
].opindex
];
1431 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1433 reloc_howto_type
* reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1441 size
= bfd_get_reloc_size (reloc_howto
);
1443 if (size
!= 2 && size
!= 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1446 address
= (f
- frag_now
->fr_literal
) + insn_size
- size
;
1448 fixP
= fix_new_exp (frag_now
, address
, size
,
1450 reloc_howto
->pc_relative
,
1453 switch (fixups
[i
].reloc
)
1455 case BFD_RELOC_LO16
:
1456 case BFD_RELOC_HI16
:
1457 case BFD_RELOC_HI16_S
:
1458 fixP
->fx_no_overflow
= 1;
1466 f
- frag_now
->fr_literal
, 4,
1468 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1469 (bfd_reloc_code_real_type
) (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)
1474 input_line_pointer
= saved_input_line_pointer
;
1478 /* If while processing a fixup, a reloc really needs to be created */
1479 /* then it is done here. */
1482 tc_gen_reloc (seg
, fixp
)
1488 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1489 reloc
->sym_ptr_ptr
= & fixp
->fx_addsy
->bsym
;
1490 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1491 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1493 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1495 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1496 "reloc %d not supported by object file format", (int)fixp
->fx_r_type
);
1500 reloc
->addend
= fixp
->fx_addnumber
;
1505 /* Assume everything will fit in two bytes, then expand as necessary. */
1507 md_estimate_size_before_relax (fragp
, seg
)
1517 md_pcrel_from (fixp
)
1520 /* If the symbol is undefined, or in a section other than our own,
1521 then let the linker figure it out. */
1522 if (fixp
->fx_addsy
!= (symbolS
*) NULL
&& ! S_IS_DEFINED (fixp
->fx_addsy
))
1524 /* The symbol is undefined. Let the linker figure it out. */
1527 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1531 md_apply_fix3 (fixp
, valuep
, seg
)
1539 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1544 else if (fixp
->fx_pcrel
)
1548 value
= fixp
->fx_offset
;
1549 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1551 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1552 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1555 /* We don't actually support subtracting a symbol. */
1556 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1557 "expression too complex");
1562 if ((int) fixp
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
1565 const struct v850_operand
* operand
;
1569 opindex
= (int) fixp
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
1570 operand
= & v850_operands
[ opindex
];
1572 /* Fetch the instruction, insert the fully resolved operand
1573 value, and stuff the instruction back again.
1575 Note the instruction has been stored in little endian
1577 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1579 insn
= bfd_getl32 ((unsigned char *) where
);
1580 insn
= v850_insert_operand (insn
, operand
, (offsetT
) value
,
1581 fixp
->fx_file
, fixp
->fx_line
);
1582 bfd_putl32 ((bfd_vma
) insn
, (unsigned char *) where
);
1586 /* Nothing else to do here. */
1590 /* Determine a BFD reloc value based on the operand information.
1591 We are only prepared to turn a few of the operands into relocs. */
1593 if (operand
->bits
== 22)
1594 fixp
->fx_r_type
= BFD_RELOC_V850_22_PCREL
;
1595 else if (operand
->bits
== 9)
1596 fixp
->fx_r_type
= BFD_RELOC_V850_9_PCREL
;
1599 as_bad_where(fixp
->fx_file
, fixp
->fx_line
,
1600 "unresolved expression that must be resolved");
1605 else if (fixp
->fx_done
)
1607 /* We still have to insert the value into memory! */
1608 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1609 if (fixp
->fx_size
== 1)
1610 *where
= value
& 0xff;
1611 if (fixp
->fx_size
== 2)
1612 bfd_putl16 (value
& 0xffff, (unsigned char *) where
);
1613 if (fixp
->fx_size
== 4)
1614 bfd_putl32 (value
, (unsigned char *) where
);
1617 fixp
->fx_addnumber
= value
;
1622 /* Insert an operand value into an instruction. */
1624 static unsigned long
1625 v850_insert_operand (insn
, operand
, val
, file
, line
)
1627 const struct v850_operand
* operand
;
1632 if (operand
->bits
!= 32)
1637 if ((operand
->flags
& V850_OPERAND_SIGNED
) != 0)
1639 if (! warn_signed_overflows
)
1640 max
= (1 << operand
->bits
) - 1;
1642 max
= (1 << (operand
->bits
- 1)) - 1;
1644 min
= - (1 << (operand
->bits
- 1));
1648 max
= (1 << operand
->bits
) - 1;
1654 if (test
< (offsetT
) min
|| test
> (offsetT
) max
)
1657 "operand out of range (%s not between %ld and %ld)";
1660 sprint_value (buf
, test
);
1661 if (file
== (char *) NULL
)
1662 as_warn (err
, buf
, min
, max
);
1664 as_warn_where (file
, line
, err
, buf
, min
, max
);
1668 if (operand
->insert
)
1670 const char * message
= NULL
;
1672 insn
= (*operand
->insert
) (insn
, val
, & message
);
1673 if (message
!= NULL
)
1675 if (file
== (char *) NULL
)
1678 as_warn_where (file
, line
, message
);
1682 insn
|= (((long) val
& ((1 << operand
->bits
) - 1)) << operand
->shift
);
1687 /* Parse a cons expression. We have to handle hi(), lo(), etc
1690 parse_cons_expression_v850 (exp
)
1693 /* See if there's a reloc prefix like hi() we have to handle. */
1694 hold_cons_reloc
= v850_reloc_prefix (NULL
);
1696 /* Do normal expression parsing. */
1700 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1701 found a reloc prefix, then we use that reloc, else we choose an
1702 appropriate one based on the size of the expression. */
1704 cons_fix_new_v850 (frag
, where
, size
, exp
)
1710 if (hold_cons_reloc
== BFD_RELOC_UNUSED
)
1713 hold_cons_reloc
= BFD_RELOC_32
;
1715 hold_cons_reloc
= BFD_RELOC_16
;
1717 hold_cons_reloc
= BFD_RELOC_8
;
1721 fix_new_exp (frag
, where
, size
, exp
, 0, hold_cons_reloc
);
1723 fix_new (frag
, where
, size
, NULL
, 0, 0, hold_cons_reloc
);