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
= -1;
40 /* Indicates the target processor(s) for the assemble. */
41 static unsigned int processor_mask
= -1;
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
;
86 /* start-sanitize-v850e */
87 static segT call_table_data_section
= NULL
;
88 static segT call_table_text_section
= NULL
;
89 /* end-sanitize-v850e */
93 static unsigned long v850_insert_operand
94 PARAMS ((unsigned long insn
, const struct v850_operand
*operand
,
95 offsetT val
, char *file
, unsigned int line
));
99 #define MAX_INSN_FIXUPS (5)
104 bfd_reloc_code_real_type reloc
;
106 struct v850_fixup fixups
[MAX_INSN_FIXUPS
];
110 v850_sdata (int ignore
)
112 subseg_set (sdata_section
, (subsegT
) get_absolute_expression ());
114 demand_empty_rest_of_line ();
118 v850_tdata (int ignore
)
120 subseg_set (tdata_section
, (subsegT
) get_absolute_expression ());
122 demand_empty_rest_of_line ();
126 v850_zdata (int ignore
)
128 subseg_set (zdata_section
, (subsegT
) get_absolute_expression ());
130 demand_empty_rest_of_line ();
134 v850_sbss (int ignore
)
136 subseg_set (sbss_section
, (subsegT
) get_absolute_expression ());
138 demand_empty_rest_of_line ();
142 v850_tbss (int ignore
)
144 subseg_set (tbss_section
, (subsegT
) get_absolute_expression ());
146 demand_empty_rest_of_line ();
150 v850_zbss (int ignore
)
152 subseg_set (zbss_section
, (subsegT
) get_absolute_expression ());
154 demand_empty_rest_of_line ();
158 v850_rosdata (int ignore
)
160 subseg_set (rosdata_section
, (subsegT
) get_absolute_expression ());
162 demand_empty_rest_of_line ();
166 v850_rozdata (int ignore
)
168 subseg_set (rozdata_section
, (subsegT
) get_absolute_expression ());
170 demand_empty_rest_of_line ();
173 /* start-sanitize-v850e */
175 v850_call_table_data (int ignore
)
177 subseg_set (call_table_data_section
, (subsegT
) get_absolute_expression ());
179 demand_empty_rest_of_line ();
183 v850_call_table_text (int ignore
)
185 subseg_set (call_table_text_section
, (subsegT
) get_absolute_expression ());
187 demand_empty_rest_of_line ();
189 /* end-sanitize-v850e */
192 v850_section (int arg
)
197 for (ptr
= input_line_pointer
; * ptr
!= '\n' && * ptr
!= 0; ptr
++)
198 if (* ptr
== ',' && ptr
[1] == '.')
204 obj_elf_section (arg
);
210 v850_bss (int ignore
)
212 register int temp
= get_absolute_expression ();
214 obj_elf_section_change_hook();
216 subseg_set (bss_section
, (subsegT
) temp
);
218 demand_empty_rest_of_line ();
222 v850_offset (int ignore
)
224 int temp
= get_absolute_expression ();
226 temp
-= frag_now_fix();
229 (void) frag_more (temp
);
231 demand_empty_rest_of_line ();
235 set_machine (int number
)
238 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, machine
);
242 case 0: processor_mask
= PROCESSOR_V850
; break;
243 /* start-sanitize-v850e */
244 case bfd_mach_v850e
: processor_mask
= PROCESSOR_V850E
; break;
245 case bfd_mach_v850eq
: processor_mask
= PROCESSOR_V850EQ
; break;
246 /* end-sanitize-v850e */
250 /* The target specific pseudo-ops which we support. */
251 const pseudo_typeS md_pseudo_table
[] =
253 {"sdata", v850_sdata
, 0},
254 {"tdata", v850_tdata
, 0},
255 {"zdata", v850_zdata
, 0},
256 {"sbss", v850_sbss
, 0},
257 {"tbss", v850_tbss
, 0},
258 {"zbss", v850_zbss
, 0},
259 {"rosdata", v850_rosdata
, 0},
260 {"rozdata", v850_rozdata
, 0},
261 {"bss", v850_bss
, 0},
262 {"offset", v850_offset
, 0},
263 {"section", v850_section
, 0},
265 {"v850", set_machine
, 0},
266 /* start-sanitize-v850e */
267 {"call_table_data", v850_call_table_data
, 0},
268 {"call_table_text", v850_call_table_text
, 0},
269 {"v850e", set_machine
, bfd_mach_v850e
},
270 {"v850eq", set_machine
, bfd_mach_v850eq
},
271 /* end-sanitize-v850e */
275 /* Opcode hash table. */
276 static struct hash_control
*v850_hash
;
278 /* This table is sorted. Suitable for searching by a binary search. */
279 static const struct reg_name pre_defined_registers
[] =
281 { "ep", 30 }, /* ep - element ptr */
282 { "gp", 4 }, /* gp - global ptr */
283 { "hp", 2 }, /* hp - handler stack ptr */
284 { "lp", 31 }, /* lp - link ptr */
317 { "sp", 3 }, /* sp - stack ptr */
318 { "tp", 5 }, /* tp - text ptr */
321 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
324 static const struct reg_name system_registers
[] =
326 /* start-sanitize-v850e */
332 /* end-sanitize-v850e */
340 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
342 static const struct reg_name cc_names
[] =
367 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
369 /* reg_name_search does a binary search of the given register table
370 to see if "name" is a valid regiter name. Returns the register
371 number from the array on success, or -1 on failure. */
374 reg_name_search (regs
, regcount
, name
)
375 const struct reg_name
* regs
;
379 int middle
, low
, high
;
387 middle
= (low
+ high
) / 2;
388 cmp
= strcasecmp (name
, regs
[middle
].name
);
394 return regs
[middle
].value
;
401 /* Summary of register_name().
403 * in: Input_line_pointer points to 1st char of operand.
405 * out: A expressionS.
406 * The operand may have been a register: in this case, X_op == O_register,
407 * X_add_number is set to the register number, and truth is returned.
408 * Input_line_pointer->(next non-blank) char after operand, or is in
409 * its original state.
412 register_name (expressionP
)
413 expressionS
* expressionP
;
420 /* Find the spelling of the operand */
421 start
= name
= input_line_pointer
;
423 c
= get_symbol_end ();
425 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
427 * input_line_pointer
= c
; /* put back the delimiting char */
429 /* look to see if it's in the register table */
432 expressionP
->X_op
= O_register
;
433 expressionP
->X_add_number
= reg_number
;
435 /* make the rest nice */
436 expressionP
->X_add_symbol
= NULL
;
437 expressionP
->X_op_symbol
= NULL
;
443 /* reset the line as if we had not done anything */
444 input_line_pointer
= start
;
450 /* Summary of system_register_name().
452 * in: Input_line_pointer points to 1st char of operand.
454 * out: A expressionS.
455 * The operand may have been a register: in this case, X_op == O_register,
456 * X_add_number is set to the register number, and truth is returned.
457 * Input_line_pointer->(next non-blank) char after operand, or is in
458 * its original state.
461 system_register_name (expressionP
, accept_numbers
)
462 expressionS
* expressionP
;
463 boolean accept_numbers
;
470 /* Find the spelling of the operand */
471 start
= name
= input_line_pointer
;
473 c
= get_symbol_end ();
474 reg_number
= reg_name_search (system_registers
, SYSREG_NAME_CNT
, name
);
476 * input_line_pointer
= c
; /* put back the delimiting char */
481 input_line_pointer
= start
; /* reset input_line pointer */
483 if (isdigit (* input_line_pointer
))
484 reg_number
= strtol (input_line_pointer
, & input_line_pointer
, 10);
486 /* Make sure that the register number is allowable. */
489 /* start-sanitize-v850e */
492 /* end-sanitize-v850e */
499 /* look to see if it's in the register table */
502 expressionP
->X_op
= O_register
;
503 expressionP
->X_add_number
= reg_number
;
505 /* make the rest nice */
506 expressionP
->X_add_symbol
= NULL
;
507 expressionP
->X_op_symbol
= NULL
;
513 /* reset the line as if we had not done anything */
514 input_line_pointer
= start
;
520 /* Summary of cc_name().
522 * in: Input_line_pointer points to 1st char of operand.
524 * out: A expressionS.
525 * The operand may have been a register: in this case, X_op == O_register,
526 * X_add_number is set to the register number, and truth is returned.
527 * Input_line_pointer->(next non-blank) char after operand, or is in
528 * its original state.
531 cc_name (expressionP
)
532 expressionS
* expressionP
;
539 /* Find the spelling of the operand */
540 start
= name
= input_line_pointer
;
542 c
= get_symbol_end ();
543 reg_number
= reg_name_search (cc_names
, CC_NAME_CNT
, name
);
545 * input_line_pointer
= c
; /* put back the delimiting char */
547 /* look to see if it's in the register table */
550 expressionP
->X_op
= O_constant
;
551 expressionP
->X_add_number
= reg_number
;
553 /* make the rest nice */
554 expressionP
->X_add_symbol
= NULL
;
555 expressionP
->X_op_symbol
= NULL
;
561 /* reset the line as if we had not done anything */
562 input_line_pointer
= start
;
569 skip_white_space (void)
571 while ( * input_line_pointer
== ' '
572 || * input_line_pointer
== '\t')
573 ++ input_line_pointer
;
576 /* start-sanitize-v850e */
577 /* Summary of parse_register_list ().
579 * in: Input_line_pointer points to 1st char of a list of registers.
580 * insn is the partially constructed instruction.
581 * operand is the operand being inserted.
583 * out: True if the parse completed successfully, False otherwise.
584 * If the parse completes the correct bit fields in the
585 * instruction will be filled in.
587 * Parses register lists with the syntax:
595 * and also parses constant epxressions whoes bits indicate the
596 * registers in the lists. The LSB in the expression refers to
597 * the lowest numbered permissable register in the register list,
598 * and so on upwards. System registers are considered to be very
605 unsigned long * insn
,
606 const struct v850_operand
* operand
609 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 };
610 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 };
611 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 };
616 /* Select a register array to parse. */
617 switch (operand
->shift
)
619 case 0xffe00001: regs
= type1_regs
; break;
620 case 0xfff8000f: regs
= type2_regs
; break;
621 case 0xfff8001f: regs
= type3_regs
; break;
623 as_bad ("unknown operand shift: %x\n", operand
->shift
);
624 return "internal failure in parse_register_list";
629 /* If the expression starts with a curly brace it is a register list.
630 Otherwise it is a constant expression ,whoes bits indicate which
631 registers are to be included in the list. */
633 if (* input_line_pointer
!= '{')
641 if (exp
.X_op
!= O_constant
)
642 return "constant expression or register list expected";
644 if (regs
== type1_regs
)
646 if (exp
.X_add_number
& 0xFFFFF000)
647 return "high bits set in register list expression";
649 for (reg
= 20; reg
< 32; reg
++)
650 if (exp
.X_add_number
& (1 << (reg
- 20)))
652 for (i
= 0; i
< 32; i
++)
657 else if (regs
== type2_regs
)
659 if (exp
.X_add_number
& 0xFFFE0000)
660 return "high bits set in register list expression";
662 for (reg
= 1; reg
< 16; reg
++)
663 if (exp
.X_add_number
& (1 << (reg
- 1)))
665 for (i
= 0; i
< 32; i
++)
670 if (exp
.X_add_number
& (1 << 15))
673 if (exp
.X_add_number
& (1 << 16))
676 else /* regs == type3_regs */
678 if (exp
.X_add_number
& 0xFFFE0000)
679 return "high bits set in register list expression";
681 for (reg
= 16; reg
< 32; reg
++)
682 if (exp
.X_add_number
& (1 << (reg
- 16)))
684 for (i
= 0; i
< 32; i
++)
689 if (exp
.X_add_number
& (1 << 16))
696 input_line_pointer
++;
698 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
701 if (register_name (& exp
))
705 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
706 for (i
= 0; i
< 32; i
++)
708 if (regs
[ i
] == exp
.X_add_number
)
717 return "illegal register included in list";
720 else if (system_register_name (& exp
, true))
722 if (regs
== type1_regs
)
724 return "system registers cannot be included in list";
726 else if (exp
.X_add_number
== 5)
728 if (regs
== type2_regs
)
729 return "PSW cannot be included in list";
736 else if (* input_line_pointer
== '}')
738 input_line_pointer
++;
741 else if (* input_line_pointer
== ',')
743 input_line_pointer
++;
746 else if (* input_line_pointer
== '-')
748 /* We have encountered a range of registers: rX - rY */
753 ++ input_line_pointer
;
755 /* Get the second register in the range. */
756 if (! register_name (& exp2
))
758 return "second register should follow dash in register list";
759 exp2
.X_add_number
= exp
.X_add_number
;
762 /* Add the rest of the registers in the range. */
763 for (j
= exp
.X_add_number
+ 1; j
<= exp2
.X_add_number
; j
++)
767 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
768 for (i
= 0; i
< 32; i
++)
779 return "illegal register included in list";
793 /* end-sanitize-v850e */
795 CONST
char * md_shortopts
= "m:";
797 struct option md_longopts
[] =
799 {NULL
, no_argument
, NULL
, 0}
801 size_t md_longopts_size
= sizeof md_longopts
;
805 md_show_usage (stream
)
808 fprintf (stream
, "V850 options:\n");
809 fprintf (stream
, "\t-wsigned_overflow Warn if signed immediate values overflow\n");
810 fprintf (stream
, "\t-wunsigned_overflow Warn if unsigned immediate values overflow\n");
811 fprintf (stream
, "\t-mv850 The code is targeted at the v850\n");
812 /* start-sanitize-v850e */
813 fprintf (stream
, "\t-mv850e The code is targeted at the v850e\n");
814 fprintf (stream
, "\t-mv850eq The code is targeted at the v850eq\n");
815 /* end-sanitize-v850e */
819 md_parse_option (c
, arg
)
826 if (strcmp (arg
, "signed_overflow") == 0)
828 warn_signed_overflows
= TRUE
;
831 else if (strcmp (arg
, "unsigned_overflow") == 0)
833 warn_unsigned_overflows
= TRUE
;
839 if (strcmp (arg
, "v850") == 0)
842 processor_mask
= PROCESSOR_V850
;
845 /* start-sanitize-v850e */
846 else if (strcmp (arg
, "v850e") == 0)
848 machine
= bfd_mach_v850e
;
849 processor_mask
= PROCESSOR_V850E
;
852 else if (strcmp (arg
, "v850eq") == 0)
854 machine
= bfd_mach_v850eq
;
855 processor_mask
= PROCESSOR_V850EQ
;
858 /* end-sanitize-v850e */
866 md_undefined_symbol (name
)
873 md_atof (type
, litp
, sizep
)
879 LITTLENUM_TYPE words
[4];
895 return "bad call to md_atof";
898 t
= atof_ieee (input_line_pointer
, type
, words
);
900 input_line_pointer
= t
;
904 for (i
= prec
- 1; i
>= 0; i
--)
906 md_number_to_chars (litp
, (valueT
) words
[i
], 2);
916 md_convert_frag (abfd
, sec
, fragP
)
921 subseg_change (sec
, 0);
922 if (fragP
->fr_subtype
== 0)
924 fix_new (fragP
, fragP
->fr_fix
, 2, fragP
->fr_symbol
,
925 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
);
929 else if (fragP
->fr_subtype
== 1)
931 /* Reverse the condition of the first branch. */
932 fragP
->fr_literal
[0] &= 0xf7;
933 /* Mask off all the displacement bits. */
934 fragP
->fr_literal
[0] &= 0x8f;
935 fragP
->fr_literal
[1] &= 0x07;
936 /* Now set the displacement bits so that we branch
937 around the unconditional branch. */
938 fragP
->fr_literal
[0] |= 0x30;
940 /* Now create the unconditional branch + fixup to the final
942 md_number_to_chars (&fragP
->fr_literal
[2], 0x00000780, 4);
943 fix_new (fragP
, fragP
->fr_fix
+ 2, 4, fragP
->fr_symbol
,
944 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
+ 1);
953 md_section_align (seg
, addr
)
957 int align
= bfd_get_section_alignment (stdoutput
, seg
);
958 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
964 char * prev_name
= "";
965 register const struct v850_opcode
* op
;
968 /* start-sanitize-v850e */
969 if (strncmp (TARGET_CPU
, "v850eq", 6) == 0)
972 machine
= bfd_mach_v850eq
;
974 if (processor_mask
== -1)
975 processor_mask
= PROCESSOR_V850EQ
;
977 else if (strncmp (TARGET_CPU
, "v850e", 5) == 0)
980 machine
= bfd_mach_v850e
;
982 if (processor_mask
== -1)
983 processor_mask
= PROCESSOR_V850E
;
986 /* end-sanitize-v850e */
987 if (strncmp (TARGET_CPU
, "v850", 4) == 0)
992 if (processor_mask
== -1)
993 processor_mask
= PROCESSOR_V850
;
996 as_bad ("Unable to determine default target processor from string: %s",
999 v850_hash
= hash_new();
1001 /* Insert unique names into hash table. The V850 instruction set
1002 has many identical opcode names that have different opcodes based
1003 on the operands. This hash table then provides a quick index to
1004 the first opcode with a particular name in the opcode table. */
1009 if (strcmp (prev_name
, op
->name
))
1011 prev_name
= (char *) op
->name
;
1012 hash_insert (v850_hash
, op
->name
, (char *) op
);
1017 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, machine
);
1019 applicable
= bfd_applicable_section_flags (stdoutput
);
1021 sdata_section
= subseg_new (".sdata", 0);
1022 bfd_set_section_flags (stdoutput
, sdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
1024 tdata_section
= subseg_new (".tdata", 0);
1025 bfd_set_section_flags (stdoutput
, tdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
1027 zdata_section
= subseg_new (".zdata", 0);
1028 bfd_set_section_flags (stdoutput
, zdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
1030 sbss_section
= subseg_new (".sbss", 0);
1031 bfd_set_section_flags (stdoutput
, sbss_section
, applicable
& SEC_ALLOC
);
1033 tbss_section
= subseg_new (".tbss", 0);
1034 bfd_set_section_flags (stdoutput
, tbss_section
, applicable
& SEC_ALLOC
);
1036 zbss_section
= subseg_new (".zbss", 0);
1037 bfd_set_section_flags (stdoutput
, zbss_section
, applicable
& SEC_ALLOC
);
1039 rosdata_section
= subseg_new (".rosdata", 0);
1040 bfd_set_section_flags (stdoutput
, rosdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
1042 rozdata_section
= subseg_new (".rozdata", 0);
1043 bfd_set_section_flags (stdoutput
, rozdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
1045 /* start-sanitize-v850e */
1046 call_table_data_section
= subseg_new (".call_table_data", 0);
1047 bfd_set_section_flags (stdoutput
, call_table_data_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
1049 call_table_text_section
= subseg_new (".call_table_text", 0);
1050 bfd_set_section_flags (stdoutput
, call_table_text_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_CODE
));
1051 /* end-sanitize-v850e */
1055 /* start-sanitize-v850e */
1056 static bfd_reloc_code_real_type
1057 handle_ctoff (const struct v850_operand
* operand
)
1059 if (operand
== NULL
)
1060 return BFD_RELOC_V850_CALLT_16_16_OFFSET
;
1062 if ( operand
->bits
!= 6
1063 || operand
->shift
!= 0)
1065 as_bad ("ctoff() relocation used on an instruction which does not support it");
1066 return BFD_RELOC_64
; /* Used to indicate an error condition. */
1069 return BFD_RELOC_V850_CALLT_6_7_OFFSET
;
1071 /* end-sanitize-v850e */
1073 static bfd_reloc_code_real_type
1074 handle_sdaoff (const struct v850_operand
* operand
)
1076 if (operand
== NULL
) return BFD_RELOC_V850_SDA_16_16_OFFSET
;
1077 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_SDA_15_16_OFFSET
;
1078 /* start-sanitize-v850e */
1079 if (operand
->bits
== -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
;
1080 /* end-sanitize-v850e */
1082 if ( operand
->bits
!= 16
1083 || operand
->shift
!= 16)
1085 as_bad ("sdaoff() relocation used on an instruction which does not support it");
1086 return BFD_RELOC_64
; /* Used to indicate an error condition. */
1089 return BFD_RELOC_V850_SDA_16_16_OFFSET
;
1092 static bfd_reloc_code_real_type
1093 handle_zdaoff (const struct v850_operand
* operand
)
1095 if (operand
== NULL
) return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1096 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET
;
1097 /* start-sanitize-v850e */
1098 if (operand
->bits
== -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
;
1099 /* end-sanitize-v850e */
1101 if ( operand
->bits
!= 16
1102 || operand
->shift
!= 16)
1104 as_bad ("zdaoff() relocation used on an instruction which does not support it");
1105 return BFD_RELOC_64
; /* Used to indicate an error condition. */
1108 return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
1111 static bfd_reloc_code_real_type
1112 handle_tdaoff (const struct v850_operand
* operand
)
1114 if (operand
== NULL
) return BFD_RELOC_V850_TDA_7_7_OFFSET
; /* data item, not an instruction. */
1115 if (operand
->bits
== 6 && operand
->shift
== 1) return BFD_RELOC_V850_TDA_6_8_OFFSET
; /* sld.w/sst.w, operand: D8_6 */
1116 /* start-sanitize-v850e */
1117 if (operand
->bits
== 4 && operand
->insert
!= NULL
) return BFD_RELOC_V850_TDA_4_5_OFFSET
; /* sld.hu, operand: D5-4 */
1118 if (operand
->bits
== 4 && operand
->insert
== NULL
) return BFD_RELOC_V850_TDA_4_4_OFFSET
; /* sld.bu, operand: D4 */
1119 /* end-sanitize-v850e */
1120 if (operand
->bits
== 16 && operand
->shift
== 16) return BFD_RELOC_V850_TDA_16_16_OFFSET
; /* set1 & chums, operands: D16 */
1122 if (operand
->bits
!= 7)
1124 as_bad ("tdaoff() relocation used on an instruction which does not support it");
1125 return BFD_RELOC_64
; /* Used to indicate an error condition. */
1128 return operand
->insert
!= NULL
1129 ? BFD_RELOC_V850_TDA_7_8_OFFSET
/* sld.h/sst.h, operand: D8_7 */
1130 : BFD_RELOC_V850_TDA_7_7_OFFSET
; /* sld.b/sst.b, opreand: D7 */
1133 /* Warning: The code in this function relies upon the definitions
1134 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1135 matching the hard coded values contained herein. */
1137 static bfd_reloc_code_real_type
1138 v850_reloc_prefix (const struct v850_operand
* operand
)
1140 boolean paren_skipped
= false;
1143 /* Skip leading opening parenthesis. */
1144 if (* input_line_pointer
== '(')
1146 ++ input_line_pointer
;
1147 paren_skipped
= true;
1150 #define CHECK_(name, reloc) \
1151 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1153 input_line_pointer += strlen (name); \
1157 CHECK_ ("hi0", BFD_RELOC_HI16
);
1158 CHECK_ ("hi", BFD_RELOC_HI16_S
);
1159 CHECK_ ("lo", BFD_RELOC_LO16
);
1160 CHECK_ ("sdaoff", handle_sdaoff (operand
));
1161 CHECK_ ("zdaoff", handle_zdaoff (operand
));
1162 CHECK_ ("tdaoff", handle_tdaoff (operand
));
1164 /* start-sanitize-v850e */
1165 CHECK_ ("hilo", BFD_RELOC_32
);
1166 CHECK_ ("ctoff", handle_ctoff (operand
));
1167 /* end-sanitize-v850e */
1169 /* Restore skipped parenthesis. */
1171 -- input_line_pointer
;
1173 return BFD_RELOC_UNUSED
;
1181 char * start_of_operands
;
1182 struct v850_opcode
* opcode
;
1183 struct v850_opcode
* next_opcode
;
1184 const unsigned char * opindex_ptr
;
1188 unsigned long insn_size
;
1192 boolean extra_data_after_insn
= false;
1193 unsigned extra_data_len
;
1194 unsigned long extra_data
;
1195 char * saved_input_line_pointer
;
1197 /* Get the opcode. */
1198 for (s
= str
; *s
!= '\0' && ! isspace (*s
); s
++)
1204 /* find the first opcode with the proper name */
1205 opcode
= (struct v850_opcode
*)hash_find (v850_hash
, str
);
1208 as_bad ("Unrecognized opcode: `%s'", str
);
1209 ignore_rest_of_line ();
1214 while (isspace (* str
))
1217 start_of_operands
= str
;
1219 saved_input_line_pointer
= input_line_pointer
;
1223 const char * errmsg
= NULL
;
1227 if ((opcode
->processors
& processor_mask
) == 0)
1229 errmsg
= "Target processor does not support this instruction.";
1236 insn
= opcode
->opcode
;
1237 extra_data_after_insn
= false;
1239 input_line_pointer
= str
= start_of_operands
;
1241 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1243 const struct v850_operand
* operand
;
1246 bfd_reloc_code_real_type reloc
;
1248 if (next_opindex
== 0)
1250 operand
= & v850_operands
[ * opindex_ptr
];
1254 operand
= & v850_operands
[ next_opindex
];
1260 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1263 if (operand
->flags
& V850_OPERAND_RELAX
)
1266 /* Gather the operand. */
1267 hold
= input_line_pointer
;
1268 input_line_pointer
= str
;
1270 /* lo(), hi(), hi0(), etc... */
1271 if ((reloc
= v850_reloc_prefix (operand
)) != BFD_RELOC_UNUSED
)
1273 if (reloc
== BFD_RELOC_64
) /* This is a fake reloc, used to indicate an error condition. */
1281 if (ex
.X_op
== O_constant
)
1285 case BFD_RELOC_V850_ZDA_16_16_OFFSET
:
1286 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]" and the like. */
1289 case BFD_RELOC_LO16
:
1291 /* Truncate, then sign extend the value. */
1292 ex
.X_add_number
= SEXT16 (ex
.X_add_number
);
1296 case BFD_RELOC_HI16
:
1298 /* Truncate, then sign extend the value. */
1299 ex
.X_add_number
= SEXT16 (ex
.X_add_number
>> 16);
1303 case BFD_RELOC_HI16_S
:
1305 /* Truncate, then sign extend the value. */
1306 int temp
= (ex
.X_add_number
>> 16) & 0xffff;
1308 temp
+= (ex
.X_add_number
>> 15) & 1;
1310 ex
.X_add_number
= SEXT16 (temp
);
1314 /* start-sanitize-v850e */
1316 if ((operand
->flags
& V850E_IMMEDIATE32
) == 0)
1318 errmsg
= "use bigger instruction";
1322 extra_data_after_insn
= true;
1324 extra_data
= ex
.X_add_number
;
1325 ex
.X_add_number
= 0;
1327 /* end-sanitize-v850e */
1330 fprintf (stderr
, "reloc: %d\n", reloc
);
1331 as_bad ("AAARG -> unhandled constant reloc");
1335 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1340 if (reloc
== BFD_RELOC_32
)
1342 if ((operand
->flags
& V850E_IMMEDIATE32
) == 0)
1344 errmsg
= "use bigger instruction";
1348 extra_data_after_insn
= true;
1350 extra_data
= ex
.X_add_number
;
1351 ex
.X_add_number
= 0;
1354 if (fc
> MAX_INSN_FIXUPS
)
1355 as_fatal ("too many fixups");
1357 fixups
[ fc
].exp
= ex
;
1358 fixups
[ fc
].opindex
= * opindex_ptr
;
1359 fixups
[ fc
].reloc
= reloc
;
1367 if ((operand
->flags
& V850_OPERAND_REG
) != 0)
1369 if (!register_name (& ex
))
1371 errmsg
= "invalid register name";
1374 if ((operand
->flags
& V850_NOT_R0
)
1375 && ex
.X_add_number
== 0)
1377 errmsg
= "register r0 cannot be used here";
1380 else if ((operand
->flags
& V850_OPERAND_SRG
) != 0)
1382 if (!system_register_name (& ex
, true))
1384 errmsg
= "invalid system register name";
1387 else if ((operand
->flags
& V850_OPERAND_EP
) != 0)
1389 char * start
= input_line_pointer
;
1390 char c
= get_symbol_end ();
1392 if (strcmp (start
, "ep") != 0 && strcmp (start
, "r30") != 0)
1394 /* Put things back the way we found them. */
1395 *input_line_pointer
= c
;
1396 input_line_pointer
= start
;
1397 errmsg
= "expected EP register";
1401 *input_line_pointer
= c
;
1402 str
= input_line_pointer
;
1403 input_line_pointer
= hold
;
1405 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1409 else if ((operand
->flags
& V850_OPERAND_CC
) != 0)
1411 if (!cc_name (& ex
))
1413 errmsg
= "invalid condition code name";
1416 /* start-sanitize-v850e */
1417 else if (operand
->flags
& V850E_PUSH_POP
)
1419 errmsg
= parse_register_list (& insn
, operand
);
1421 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1422 ex
.X_op
= O_constant
;
1423 ex
.X_add_number
= 0;
1425 else if (operand
->flags
& V850E_IMMEDIATE16
)
1429 if (ex
.X_op
!= O_constant
)
1430 errmsg
= "constant expression expected";
1431 else if (ex
.X_add_number
& 0xffff0000)
1433 if (ex
.X_add_number
& 0xffff)
1434 errmsg
= "constant too big to fit into instruction";
1435 else if ((insn
& 0x001fffc0) == 0x00130780)
1436 ex
.X_add_number
>>= 16;
1438 errmsg
= "constant too big to fit into instruction";
1441 extra_data_after_insn
= true;
1443 extra_data
= ex
.X_add_number
;
1444 ex
.X_add_number
= 0;
1446 else if (operand
->flags
& V850E_IMMEDIATE32
)
1450 if (ex
.X_op
!= O_constant
)
1451 errmsg
= "constant expression expected";
1453 extra_data_after_insn
= true;
1455 extra_data
= ex
.X_add_number
;
1456 ex
.X_add_number
= 0;
1458 /* end-sanitize-v850e */
1459 else if (register_name (&ex
)
1460 && (operand
->flags
& V850_OPERAND_REG
) == 0)
1462 errmsg
= "syntax error: register not expected";
1464 else if (system_register_name (& ex
, false)
1465 && (operand
->flags
& V850_OPERAND_SRG
) == 0)
1467 errmsg
= "syntax error: system register not expected";
1469 else if (cc_name (&ex
)
1470 && (operand
->flags
& V850_OPERAND_CC
) == 0)
1472 errmsg
= "syntax error: condition code not expected";
1477 /* start-sanitize-v850e */
1479 If we are assembling a MOV instruction (or a CALLT.... :-)
1480 and the immediate value does not fit into the bits available
1481 then create a fake error so that the next MOV instruction
1482 will be selected. This one has a 32 bit immediate field. */
1484 if (((insn
& 0x07e0) == 0x0200)
1485 && ex
.X_op
== O_constant
1486 && (ex
.X_add_number
< (- (1 << (operand
->bits
- 1))) || ex
.X_add_number
> ((1 << operand
->bits
) - 1)))
1487 errmsg
= "use bigger instruction";
1488 /* end-sanitize-v850e */
1494 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1499 errmsg
= "illegal operand";
1502 errmsg
= "missing operand";
1505 if ((operand
->flags
& (V850_OPERAND_REG
| V850_OPERAND_SRG
)) == 0)
1507 errmsg
= "invalid operand";
1510 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1515 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1520 /* We need to generate a fixup for this expression. */
1521 if (fc
>= MAX_INSN_FIXUPS
)
1522 as_fatal ("too many fixups");
1524 fixups
[ fc
].exp
= ex
;
1525 fixups
[ fc
].opindex
= * opindex_ptr
;
1526 fixups
[ fc
].reloc
= BFD_RELOC_UNUSED
;
1532 str
= input_line_pointer
;
1533 input_line_pointer
= hold
;
1535 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']'
1544 next_opcode
= opcode
+ 1;
1545 if (next_opcode
->name
!= NULL
&& strcmp (next_opcode
->name
, opcode
->name
) == 0)
1547 opcode
= next_opcode
;
1552 ignore_rest_of_line ();
1553 input_line_pointer
= saved_input_line_pointer
;
1559 while (isspace (*str
))
1563 as_bad ("junk at end of line: `%s'", str
);
1565 input_line_pointer
= str
;
1567 /* Write out the instruction.
1569 Four byte insns have an opcode with the two high bits on. */
1570 if (relaxable
&& fc
> 0)
1572 f
= frag_var (rs_machine_dependent
, 6, 4, 0,
1573 fixups
[0].exp
.X_add_symbol
,
1574 fixups
[0].exp
.X_add_number
,
1575 (char *)fixups
[0].opindex
);
1577 md_number_to_chars (f
, insn
, insn_size
);
1578 md_number_to_chars (f
+ 2, 0, 4);
1583 if ((insn
& 0x0600) == 0x0600)
1588 /* start-sanitize-v850e */
1589 /* Special case: 32 bit MOV */
1590 if ((insn
& 0xffe0) == 0x0620)
1592 /* end-sanitize-v850e */
1594 f
= frag_more (insn_size
);
1596 md_number_to_chars (f
, insn
, insn_size
);
1598 if (extra_data_after_insn
)
1600 f
= frag_more (extra_data_len
);
1602 md_number_to_chars (f
, extra_data
, extra_data_len
);
1604 extra_data_after_insn
= false;
1608 /* Create any fixups. At this point we do not use a
1609 bfd_reloc_code_real_type, but instead just use the
1610 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1611 handle fixups for any operand type, although that is admittedly
1612 not a very exciting feature. We pick a BFD reloc type in
1614 for (i
= 0; i
< fc
; i
++)
1616 const struct v850_operand
* operand
;
1617 bfd_reloc_code_real_type reloc
;
1619 operand
= & v850_operands
[ fixups
[i
].opindex
];
1621 reloc
= fixups
[i
].reloc
;
1623 if (reloc
!= BFD_RELOC_UNUSED
)
1625 reloc_howto_type
* reloc_howto
= bfd_reloc_type_lookup (stdoutput
, reloc
);
1633 size
= bfd_get_reloc_size (reloc_howto
);
1635 if (size
!= 2 && size
!= 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1638 address
= (f
- frag_now
->fr_literal
) + insn_size
- size
;
1640 if (reloc
== BFD_RELOC_32
)
1645 fixP
= fix_new_exp (frag_now
, address
, size
,
1647 reloc_howto
->pc_relative
,
1652 case BFD_RELOC_LO16
:
1653 case BFD_RELOC_HI16
:
1654 case BFD_RELOC_HI16_S
:
1655 fixP
->fx_no_overflow
= 1;
1663 f
- frag_now
->fr_literal
, 4,
1665 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1666 (bfd_reloc_code_real_type
) (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)
1671 input_line_pointer
= saved_input_line_pointer
;
1675 /* If while processing a fixup, a reloc really needs to be created */
1676 /* then it is done here. */
1679 tc_gen_reloc (seg
, fixp
)
1685 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1686 reloc
->sym_ptr_ptr
= & fixp
->fx_addsy
->bsym
;
1687 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1688 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1690 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1692 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1693 "reloc %d not supported by object file format", (int)fixp
->fx_r_type
);
1700 reloc
->addend
= fixp
->fx_addnumber
;
1705 /* Assume everything will fit in two bytes, then expand as necessary. */
1707 md_estimate_size_before_relax (fragp
, seg
)
1716 md_pcrel_from (fixp
)
1719 /* If the symbol is undefined, or in a section other than our own,
1720 then let the linker figure it out. */
1721 if (fixp
->fx_addsy
!= (symbolS
*) NULL
&& ! S_IS_DEFINED (fixp
->fx_addsy
))
1723 /* The symbol is undefined. Let the linker figure it out. */
1726 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1730 md_apply_fix3 (fixp
, valuep
, seg
)
1738 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1743 else if (fixp
->fx_pcrel
)
1747 value
= fixp
->fx_offset
;
1748 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1750 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1751 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1754 /* We don't actually support subtracting a symbol. */
1755 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1756 "expression too complex");
1761 if ((int) fixp
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
1764 const struct v850_operand
* operand
;
1767 opindex
= (int) fixp
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
1768 operand
= & v850_operands
[ opindex
];
1770 /* Fetch the instruction, insert the fully resolved operand
1771 value, and stuff the instruction back again.
1773 Note the instruction has been stored in little endian
1775 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1777 insn
= bfd_getl32 ((unsigned char *) where
);
1778 insn
= v850_insert_operand (insn
, operand
, (offsetT
) value
,
1779 fixp
->fx_file
, fixp
->fx_line
);
1780 bfd_putl32 ((bfd_vma
) insn
, (unsigned char *) where
);
1784 /* Nothing else to do here. */
1788 /* Determine a BFD reloc value based on the operand information.
1789 We are only prepared to turn a few of the operands into relocs. */
1791 if (operand
->bits
== 22)
1792 fixp
->fx_r_type
= BFD_RELOC_V850_22_PCREL
;
1793 else if (operand
->bits
== 9)
1794 fixp
->fx_r_type
= BFD_RELOC_V850_9_PCREL
;
1797 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
1799 as_bad_where(fixp
->fx_file
, fixp
->fx_line
,
1800 "unresolved expression that must be resolved");
1805 else if (fixp
->fx_done
)
1807 /* We still have to insert the value into memory! */
1808 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1809 if (fixp
->fx_size
== 1)
1810 *where
= value
& 0xff;
1811 else if (fixp
->fx_size
== 2)
1812 bfd_putl16 (value
& 0xffff, (unsigned char *) where
);
1813 else if (fixp
->fx_size
== 4)
1814 bfd_putl32 (value
, (unsigned char *) where
);
1817 fixp
->fx_addnumber
= value
;
1822 /* Insert an operand value into an instruction. */
1824 static unsigned long
1825 v850_insert_operand (insn
, operand
, val
, file
, line
)
1827 const struct v850_operand
* operand
;
1832 if (operand
->insert
)
1834 const char * message
= NULL
;
1836 insn
= (*operand
->insert
) (insn
, val
, & message
);
1837 if (message
!= NULL
)
1839 if (file
== (char *) NULL
)
1842 as_warn_where (file
, line
, message
);
1847 if (operand
->bits
!= 32)
1852 if ((operand
->flags
& V850_OPERAND_SIGNED
) != 0)
1854 if (! warn_signed_overflows
)
1855 max
= (1 << operand
->bits
) - 1;
1857 max
= (1 << (operand
->bits
- 1)) - 1;
1859 min
= - (1 << (operand
->bits
- 1));
1863 max
= (1 << operand
->bits
) - 1;
1865 if (! warn_unsigned_overflows
)
1866 min
= - (1 << (operand
->bits
- 1));
1873 if (test
< (offsetT
) min
|| test
> (offsetT
) max
)
1875 const char * err
= "operand out of range (%s not between %ld and %ld)";
1878 sprint_value (buf
, test
);
1879 if (file
== (char *) NULL
)
1880 as_warn (err
, buf
, min
, max
);
1882 as_warn_where (file
, line
, err
, buf
, min
, max
);
1886 insn
|= (((long) val
& ((1 << operand
->bits
) - 1)) << operand
->shift
);
1892 /* Parse a cons expression. We have to handle hi(), lo(), etc
1895 parse_cons_expression_v850 (exp
)
1898 /* See if there's a reloc prefix like hi() we have to handle. */
1899 hold_cons_reloc
= v850_reloc_prefix (NULL
);
1901 /* Do normal expression parsing. */
1905 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1906 found a reloc prefix, then we use that reloc, else we choose an
1907 appropriate one based on the size of the expression. */
1909 cons_fix_new_v850 (frag
, where
, size
, exp
)
1915 if (hold_cons_reloc
== BFD_RELOC_UNUSED
)
1918 hold_cons_reloc
= BFD_RELOC_32
;
1920 hold_cons_reloc
= BFD_RELOC_16
;
1922 hold_cons_reloc
= BFD_RELOC_8
;
1926 fix_new_exp (frag
, where
, size
, exp
, 0, hold_cons_reloc
);
1928 fix_new (frag
, where
, size
, NULL
, 0, 0, hold_cons_reloc
);