1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997 Free Software Foundation.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include "opcode/v850.h"
27 /* sign-extend a 16-bit number */
28 #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000)
30 /* Temporarily holds the reloc in a cons expression. */
31 static bfd_reloc_code_real_type hold_cons_reloc
;
33 /* Structure to hold information about predefined registers. */
40 /* Generic assembler global variables which must be defined by all targets. */
42 /* Characters which always start a comment. */
43 const char comment_chars
[] = "#";
45 /* Characters which start a comment at the beginning of a line. */
46 const char line_comment_chars
[] = ";#";
48 /* Characters which may be used to separate multiple commands on a
50 const char line_separator_chars
[] = ";";
52 /* Characters which are used to indicate an exponent in a floating
54 const char EXP_CHARS
[] = "eE";
56 /* Characters which mean that a number is a floating point constant,
58 const char FLT_CHARS
[] = "dD";
61 const relax_typeS md_relax_table
[] = {
63 {0x1fffff, -0x200000, 6, 0},
67 static segT sdata_section
= NULL
;
68 static segT tdata_section
= NULL
;
69 static segT zdata_section
= NULL
;
70 static segT sbss_section
= NULL
;
71 static segT tbss_section
= NULL
;
72 static segT zbss_section
= NULL
;
73 static segT rosdata_section
= NULL
;
74 static segT rozdata_section
= NULL
;
78 static unsigned long v850_insert_operand
79 PARAMS ((unsigned long insn
, const struct v850_operand
*operand
,
80 offsetT val
, char *file
, unsigned int line
));
84 #define MAX_INSN_FIXUPS (5)
89 bfd_reloc_code_real_type reloc
;
91 struct v850_fixup fixups
[MAX_INSN_FIXUPS
];
95 v850_sdata (int ignore
)
97 subseg_set (sdata_section
, (subsegT
) get_absolute_expression ());
99 demand_empty_rest_of_line ();
103 v850_tdata (int ignore
)
105 subseg_set (tdata_section
, (subsegT
) get_absolute_expression ());
107 demand_empty_rest_of_line ();
111 v850_zdata (int ignore
)
113 subseg_set (zdata_section
, (subsegT
) get_absolute_expression ());
115 demand_empty_rest_of_line ();
119 v850_sbss (int ignore
)
121 subseg_set (sbss_section
, (subsegT
) get_absolute_expression ());
123 demand_empty_rest_of_line ();
127 v850_tbss (int ignore
)
129 subseg_set (tbss_section
, (subsegT
) get_absolute_expression ());
131 demand_empty_rest_of_line ();
135 v850_zbss (int ignore
)
137 subseg_set (zbss_section
, (subsegT
) get_absolute_expression ());
139 demand_empty_rest_of_line ();
143 v850_rosdata (int ignore
)
145 subseg_set (rosdata_section
, (subsegT
) get_absolute_expression ());
147 demand_empty_rest_of_line ();
151 v850_rozdata (int ignore
)
153 subseg_set (rozdata_section
, (subsegT
) get_absolute_expression ());
155 demand_empty_rest_of_line ();
159 v850_section (int arg
)
164 for (ptr
= input_line_pointer
; * ptr
!= '\n' && * ptr
!= 0; ptr
++)
165 if (* ptr
== ',' && ptr
[1] == '.')
171 obj_elf_section (arg
);
177 v850_bss (int ignore
)
179 register int temp
= get_absolute_expression ();
181 obj_elf_section_change_hook();
183 subseg_set (bss_section
, (subsegT
) temp
);
185 demand_empty_rest_of_line ();
189 v850_offset (int ignore
)
191 int temp
= get_absolute_expression ();
193 temp
-= frag_now_fix();
196 (void) frag_more (temp
);
198 demand_empty_rest_of_line ();
201 /* The target specific pseudo-ops which we support. */
202 const pseudo_typeS md_pseudo_table
[] =
204 {"sdata", v850_sdata
, 0},
205 {"tdata", v850_tdata
, 0},
206 {"zdata", v850_zdata
, 0},
207 {"sbss", v850_sbss
, 0},
208 {"tbss", v850_tbss
, 0},
209 {"zbss", v850_zbss
, 0},
210 {"rosdata", v850_rosdata
, 0},
211 {"rozdata", v850_rozdata
, 0},
212 {"bss", v850_bss
, 0},
213 {"offset", v850_offset
, 0},
214 {"section", v850_section
, 0},
219 /* Opcode hash table. */
220 static struct hash_control
*v850_hash
;
222 /* This table is sorted. Suitable for searching by a binary search. */
223 static const struct reg_name pre_defined_registers
[] =
225 { "ep", 30 }, /* ep - element ptr */
226 { "gp", 4 }, /* gp - global ptr */
227 { "hp", 2 }, /* hp - handler stack ptr */
228 { "lp", 31 }, /* lp - link ptr */
261 { "sp", 3 }, /* sp - stack ptr */
262 { "tp", 5 }, /* tp - text ptr */
265 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
268 static const struct reg_name system_registers
[] =
270 /* start-sanitize-v850e */
276 /* end-sanitize-v850e */
284 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
286 static const struct reg_name cc_names
[] =
311 #define CC_NAME_CNT (sizeof(cc_names) / sizeof(struct reg_name))
313 /* reg_name_search does a binary search of the given register table
314 to see if "name" is a valid regiter name. Returns the register
315 number from the array on success, or -1 on failure. */
318 reg_name_search (regs
, regcount
, name
)
319 const struct reg_name
* regs
;
323 int middle
, low
, high
;
331 middle
= (low
+ high
) / 2;
332 cmp
= strcasecmp (name
, regs
[middle
].name
);
338 return regs
[middle
].value
;
345 /* Summary of register_name().
347 * in: Input_line_pointer points to 1st char of operand.
349 * out: A expressionS.
350 * The operand may have been a register: in this case, X_op == O_register,
351 * X_add_number is set to the register number, and truth is returned.
352 * Input_line_pointer->(next non-blank) char after operand, or is in
353 * its original state.
356 register_name (expressionP
)
357 expressionS
* expressionP
;
364 /* Find the spelling of the operand */
365 start
= name
= input_line_pointer
;
367 c
= get_symbol_end ();
369 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
371 * input_line_pointer
= c
; /* put back the delimiting char */
373 /* look to see if it's in the register table */
376 expressionP
->X_op
= O_register
;
377 expressionP
->X_add_number
= reg_number
;
379 /* make the rest nice */
380 expressionP
->X_add_symbol
= NULL
;
381 expressionP
->X_op_symbol
= NULL
;
387 /* reset the line as if we had not done anything */
388 input_line_pointer
= start
;
394 /* Summary of system_register_name().
396 * in: Input_line_pointer points to 1st char of operand.
398 * out: A expressionS.
399 * The operand may have been a register: in this case, X_op == O_register,
400 * X_add_number is set to the register number, and truth is returned.
401 * Input_line_pointer->(next non-blank) char after operand, or is in
402 * its original state.
405 system_register_name (expressionP
, accept_numbers
)
406 expressionS
* expressionP
;
407 boolean accept_numbers
;
414 /* Find the spelling of the operand */
415 start
= name
= input_line_pointer
;
417 c
= get_symbol_end ();
418 reg_number
= reg_name_search (system_registers
, SYSREG_NAME_CNT
, name
);
420 * input_line_pointer
= c
; /* put back the delimiting char */
425 input_line_pointer
= start
; /* reset input_line pointer */
427 if (isdigit (* input_line_pointer
))
428 reg_number
= strtol (input_line_pointer
, & input_line_pointer
, 10);
430 /* Make sure that the register number is allowable. */
433 /* start-sanitize-v850e */
436 /* end-sanitize-v850e */
443 /* look to see if it's in the register table */
446 expressionP
->X_op
= O_register
;
447 expressionP
->X_add_number
= reg_number
;
449 /* make the rest nice */
450 expressionP
->X_add_symbol
= NULL
;
451 expressionP
->X_op_symbol
= NULL
;
457 /* reset the line as if we had not done anything */
458 input_line_pointer
= start
;
464 /* Summary of cc_name().
466 * in: Input_line_pointer points to 1st char of operand.
468 * out: A expressionS.
469 * The operand may have been a register: in this case, X_op == O_register,
470 * X_add_number is set to the register number, and truth is returned.
471 * Input_line_pointer->(next non-blank) char after operand, or is in
472 * its original state.
475 cc_name (expressionP
)
476 expressionS
*expressionP
;
483 /* Find the spelling of the operand */
484 start
= name
= input_line_pointer
;
486 c
= get_symbol_end ();
487 reg_number
= reg_name_search (cc_names
, CC_NAME_CNT
, name
);
489 * input_line_pointer
= c
; /* put back the delimiting char */
491 /* look to see if it's in the register table */
494 expressionP
->X_op
= O_constant
;
495 expressionP
->X_add_number
= reg_number
;
497 /* make the rest nice */
498 expressionP
->X_add_symbol
= NULL
;
499 expressionP
->X_op_symbol
= NULL
;
505 /* reset the line as if we had not done anything */
506 input_line_pointer
= start
;
513 skip_white_space (void)
515 while ( * input_line_pointer
== ' '
516 || * input_line_pointer
== '\t')
517 ++ input_line_pointer
;
520 /* start-sanitize-v850e */
521 /* Summary of parse_register_list ().
523 * in: Input_line_pointer points to 1st char of a list of registers.
524 * insn is the partially constructed instruction.
525 * operand is the operand being inserted.
527 * out: True if the parse completed successfully, False otherwise.
528 * If the parse completes the correct bit fields in the
529 * instruction will be filled in.
531 * Parses register lists with the syntax:
539 * and also parses constant epxressions whoes bits indicate the
540 * registers in the lists. The LSB in the expression refers to
541 * the lowest numbered permissable register in the register list,
542 * and so on upwards. System registers are considered to be very
549 unsigned long * insn
,
550 const struct v850_operand
* operand
553 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 };
554 /* start-sanitize-v850eq */
555 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 };
556 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 };
557 /* end-sanitize-v850eq */
562 /* Select a register array to parse. */
563 switch (operand
->shift
)
565 case 0xffe00001: regs
= type1_regs
; break;
566 /* start-sanitize-v850eq */
567 case 0xfff8000f: regs
= type2_regs
; break;
568 case 0xfff8001f: regs
= type3_regs
; break;
569 /* end-sanitize-v850eq */
571 as_bad ("unknown operand shift: %x\n", operand
->shift
);
572 return "internal failure in parse_register_list";
577 /* If the expression starts with a curly brace it is a register list.
578 Otherwise it is a constant expression ,whoes bits indicate which
579 registers are to be included in the list. */
581 if (* input_line_pointer
!= '{')
589 if (exp
.X_op
!= O_constant
)
590 return "constant expression or register list expected";
592 /* start-sanitize-v850eq */
593 if (regs
== type1_regs
)
594 /* end-sanitize-v850eq */
596 if (exp
.X_add_number
& 0xFFFFF000)
597 return "high bits set in register list expression";
599 for (reg
= 20; reg
< 32; reg
++)
600 if (exp
.X_add_number
& (1 << (reg
- 20)))
602 for (i
= 0; i
< 32; i
++)
607 /* start-sanitize-v850eq */
608 else if (regs
== type2_regs
)
610 if (exp
.X_add_number
& 0xFFFE0000)
611 return "high bits set in register list expression";
613 for (reg
= 1; reg
< 16; reg
++)
614 if (exp
.X_add_number
& (1 << (reg
- 1)))
616 for (i
= 0; i
< 32; i
++)
621 if (exp
.X_add_number
& (1 << 15))
624 if (exp
.X_add_number
& (1 << 16))
627 else /* regs == type3_regs */
629 if (exp
.X_add_number
& 0xFFFE0000)
630 return "high bits set in register list expression";
632 for (reg
= 16; reg
< 32; reg
++)
633 if (exp
.X_add_number
& (1 << (reg
- 16)))
635 for (i
= 0; i
< 32; i
++)
640 if (exp
.X_add_number
& (1 << 16))
643 /* end-sanitize-v850eq */
648 input_line_pointer
++;
650 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
653 if (register_name (& exp
))
657 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
658 for (i
= 0; i
< 32; i
++)
660 if (regs
[ i
] == exp
.X_add_number
)
669 return "illegal register included in list";
672 else if (system_register_name (& exp
, true))
674 if (regs
== type1_regs
)
676 return "system registers cannot be included in list";
678 else if (exp
.X_add_number
== 5)
680 if (regs
== type2_regs
)
681 return "PSW cannot be included in list";
688 else if (* input_line_pointer
== '}')
690 input_line_pointer
++;
693 else if (* input_line_pointer
== ',')
695 input_line_pointer
++;
698 else if (* input_line_pointer
== '-')
700 /* We have encountered a range of registers: rX - rY */
705 ++ input_line_pointer
;
707 /* Get the second register in the range. */
708 if (! register_name (& exp2
))
710 return "second register should follow dash in register list";
711 exp2
.X_add_number
= exp
.X_add_number
;
714 /* Add the rest of the registers in the range. */
715 for (j
= exp
.X_add_number
+ 1; j
<= exp2
.X_add_number
; j
++)
719 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
720 for (i
= 0; i
< 32; i
++)
731 return "illegal register included in list";
745 /* end-sanitize-v850e */
747 CONST
char * md_shortopts
= "m:";
749 struct option md_longopts
[] =
751 {NULL
, no_argument
, NULL
, 0}
753 size_t md_longopts_size
= sizeof md_longopts
;
757 md_show_usage (stream
)
760 fprintf (stream
, "V850 options:\n");
761 fprintf (stream
, "\tnone at present\n");
765 md_parse_option (c
, arg
)
773 md_undefined_symbol (name
)
780 md_atof (type
, litp
, sizep
)
786 LITTLENUM_TYPE words
[4];
802 return "bad call to md_atof";
805 t
= atof_ieee (input_line_pointer
, type
, words
);
807 input_line_pointer
= t
;
811 for (i
= prec
- 1; i
>= 0; i
--)
813 md_number_to_chars (litp
, (valueT
) words
[i
], 2);
823 md_convert_frag (abfd
, sec
, fragP
)
828 subseg_change (sec
, 0);
829 if (fragP
->fr_subtype
== 0)
831 fix_new (fragP
, fragP
->fr_fix
, 2, fragP
->fr_symbol
,
832 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
);
836 else if (fragP
->fr_subtype
== 1)
838 /* Reverse the condition of the first branch. */
839 fragP
->fr_literal
[0] &= 0xf7;
840 /* Mask off all the displacement bits. */
841 fragP
->fr_literal
[0] &= 0x8f;
842 fragP
->fr_literal
[1] &= 0x07;
843 /* Now set the displacement bits so that we branch
844 around the unconditional branch. */
845 fragP
->fr_literal
[0] |= 0x30;
847 /* Now create the unconditional branch + fixup to the final
849 md_number_to_chars (&fragP
->fr_literal
[2], 0x00000780, 4);
850 fix_new (fragP
, fragP
->fr_fix
+ 2, 4, fragP
->fr_symbol
,
851 fragP
->fr_offset
, 1, BFD_RELOC_UNUSED
+ (int)fragP
->fr_opcode
+ 1);
860 md_section_align (seg
, addr
)
864 int align
= bfd_get_section_alignment (stdoutput
, seg
);
865 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
871 char * prev_name
= "";
872 register const struct v850_opcode
* op
;
876 v850_hash
= hash_new();
878 /* Insert unique names into hash table. The V850 instruction set
879 has many identical opcode names that have different opcodes based
880 on the operands. This hash table then provides a quick index to
881 the first opcode with a particular name in the opcode table. */
886 if (strcmp (prev_name
, op
->name
))
888 prev_name
= (char *) op
->name
;
889 hash_insert (v850_hash
, op
->name
, (char *) op
);
894 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, 0);
895 /* start-sanitize-v850e */
896 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, bfd_mach_v850e
);
897 /* end-sanitize-v850e */
898 /* start-sanitize-v850eq */
899 bfd_set_arch_mach (stdoutput
, TARGET_ARCH
, bfd_mach_v850eq
);
900 /* end-sanitize-v850eq */
902 applicable
= bfd_applicable_section_flags (stdoutput
);
904 sdata_section
= subseg_new (".sdata", 0);
905 bfd_set_section_flags (stdoutput
, sdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
907 tdata_section
= subseg_new (".tdata", 0);
908 bfd_set_section_flags (stdoutput
, tdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
910 zdata_section
= subseg_new (".zdata", 0);
911 bfd_set_section_flags (stdoutput
, zdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_DATA
| SEC_HAS_CONTENTS
));
913 sbss_section
= subseg_new (".sbss", 0);
914 bfd_set_section_flags (stdoutput
, sbss_section
, applicable
& SEC_ALLOC
);
916 tbss_section
= subseg_new (".tbss", 0);
917 bfd_set_section_flags (stdoutput
, tbss_section
, applicable
& SEC_ALLOC
);
919 zbss_section
= subseg_new (".zbss", 0);
920 bfd_set_section_flags (stdoutput
, zbss_section
, applicable
& SEC_ALLOC
);
922 rosdata_section
= subseg_new (".rosdata", 0);
923 bfd_set_section_flags (stdoutput
, rosdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
925 rozdata_section
= subseg_new (".rozdata", 0);
926 bfd_set_section_flags (stdoutput
, rozdata_section
, applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
| SEC_READONLY
));
930 /* Warning: The code in this function relies upon the definitions
931 in the v850_operands[] array (defined in opcodes/v850-opc.c)
932 matching the hard coded values conatined herein. */
934 static bfd_reloc_code_real_type
935 v850_reloc_prefix (const struct v850_operand
* operand
)
937 boolean paren_skipped
= false;
940 /* Skip leading opening parenthesis. */
941 if (* input_line_pointer
== '(')
943 ++ input_line_pointer
;
944 paren_skipped
= true;
947 if (strncmp (input_line_pointer
, "hi0(", 4) == 0)
949 input_line_pointer
+= 3;
950 return BFD_RELOC_HI16
;
952 if (strncmp (input_line_pointer
, "hi(", 3) == 0)
954 input_line_pointer
+= 2;
955 return BFD_RELOC_HI16_S
;
957 if (strncmp (input_line_pointer
, "lo(", 3) == 0)
959 input_line_pointer
+= 2;
960 return BFD_RELOC_LO16
;
963 if (strncmp (input_line_pointer
, "sdaoff(", 7) == 0)
965 input_line_pointer
+= 6;
967 if (operand
== NULL
) return BFD_RELOC_V850_SDA_16_16_OFFSET
;
968 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_SDA_15_16_OFFSET
;
969 /* start-sanitize-v850e */
970 if (operand
->bits
== -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
;
971 /* end-sanitize-v850e */
973 assert (operand
->bits
== 16);
974 assert (operand
->shift
== 16);
976 return BFD_RELOC_V850_SDA_16_16_OFFSET
;
979 if (strncmp (input_line_pointer
, "zdaoff(", 7) == 0)
981 input_line_pointer
+= 6;
983 if (operand
== NULL
) return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
984 if (operand
->bits
== 15 && operand
->shift
== 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET
;
985 /* start-sanitize-v850e */
986 if (operand
->bits
== -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
;
987 /* end-sanitize-v850e */
989 assert (operand
->bits
== 16);
990 assert (operand
->shift
== 16);
992 return BFD_RELOC_V850_ZDA_16_16_OFFSET
;
995 if (strncmp (input_line_pointer
, "tdaoff(", 7) == 0)
997 input_line_pointer
+= 6;
999 if (operand
== NULL
) return BFD_RELOC_V850_TDA_7_7_OFFSET
;
1000 if (operand
->bits
== 6 && operand
->shift
== 1) return BFD_RELOC_V850_TDA_6_8_OFFSET
;
1001 /* start-sanitize-v850e */
1002 if (operand
->bits
== 4 && operand
->insert
!= NULL
) return BFD_RELOC_V850_TDA_4_5_OFFSET
;
1003 if (operand
->bits
== 4 && operand
->insert
== NULL
) return BFD_RELOC_V850_TDA_4_4_OFFSET
;
1004 /* end-sanitize-v850e */
1006 assert (operand
->bits
== 7);
1008 return operand
->insert
!= NULL
? BFD_RELOC_V850_TDA_7_8_OFFSET
: BFD_RELOC_V850_TDA_7_7_OFFSET
;
1012 /* Restore skipped character. */
1013 -- input_line_pointer
;
1015 return BFD_RELOC_UNUSED
;
1023 char * start_of_operands
;
1024 struct v850_opcode
* opcode
;
1025 struct v850_opcode
* next_opcode
;
1026 const unsigned char * opindex_ptr
;
1030 unsigned long insn_size
;
1034 boolean extra_data_after_insn
= false;
1035 unsigned extra_data_len
;
1036 unsigned long extra_data
;
1037 char * saved_input_line_pointer
;
1039 /* Get the opcode. */
1040 for (s
= str
; *s
!= '\0' && ! isspace (*s
); s
++)
1046 /* find the first opcode with the proper name */
1047 opcode
= (struct v850_opcode
*)hash_find (v850_hash
, str
);
1050 as_bad ("Unrecognized opcode: `%s'", str
);
1051 ignore_rest_of_line ();
1056 while (isspace (* str
))
1059 start_of_operands
= str
;
1061 saved_input_line_pointer
= input_line_pointer
;
1065 const char * errmsg
= NULL
;
1071 insn
= opcode
->opcode
;
1072 extra_data_after_insn
= false;
1074 input_line_pointer
= str
= start_of_operands
;
1076 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1078 const struct v850_operand
* operand
;
1081 bfd_reloc_code_real_type reloc
;
1083 if (next_opindex
== 0)
1085 operand
= & v850_operands
[ * opindex_ptr
];
1089 operand
= & v850_operands
[ next_opindex
];
1095 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1098 if (operand
->flags
& V850_OPERAND_RELAX
)
1101 /* Gather the operand. */
1102 hold
= input_line_pointer
;
1103 input_line_pointer
= str
;
1105 /* fprintf (stderr, "operand: %s index = %d, opcode = %s\n", input_line_pointer, opindex_ptr - opcode->operands, opcode->name ); */
1107 /* lo(), hi(), hi0(), etc... */
1108 if ((reloc
= v850_reloc_prefix (operand
)) != BFD_RELOC_UNUSED
)
1112 if (ex
.X_op
== O_constant
)
1116 case BFD_RELOC_LO16
:
1118 /* Truncate, then sign extend the value. */
1119 ex
.X_add_number
= SEXT16 (ex
.X_add_number
);
1123 case BFD_RELOC_HI16
:
1125 /* Truncate, then sign extend the value. */
1126 ex
.X_add_number
= SEXT16 (ex
.X_add_number
>> 16);
1130 case BFD_RELOC_HI16_S
:
1132 /* Truncate, then sign extend the value. */
1133 int temp
= (ex
.X_add_number
>> 16) & 0xffff;
1135 temp
+= (ex
.X_add_number
>> 15) & 1;
1137 ex
.X_add_number
= SEXT16 (temp
);
1142 as_bad ( "AAARG -> unhandled constant reloc");
1146 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1151 if (fc
> MAX_INSN_FIXUPS
)
1152 as_fatal ("too many fixups");
1154 fixups
[ fc
].exp
= ex
;
1155 fixups
[ fc
].opindex
= * opindex_ptr
;
1156 fixups
[ fc
].reloc
= reloc
;
1164 if ((operand
->flags
& V850_OPERAND_REG
) != 0)
1166 if (!register_name (& ex
))
1168 errmsg
= "invalid register name";
1171 if ((operand
->flags
& V850_NOT_R0
)
1172 && ex
.X_add_number
== 0)
1174 errmsg
= "register r0 cannot be used here";
1177 else if ((operand
->flags
& V850_OPERAND_SRG
) != 0)
1179 if (!system_register_name (& ex
, true))
1181 errmsg
= "invalid system register name";
1184 else if ((operand
->flags
& V850_OPERAND_EP
) != 0)
1186 char * start
= input_line_pointer
;
1187 char c
= get_symbol_end ();
1189 if (strcmp (start
, "ep") != 0 && strcmp (start
, "r30") != 0)
1191 /* Put things back the way we found them. */
1192 *input_line_pointer
= c
;
1193 input_line_pointer
= start
;
1194 errmsg
= "expected EP register";
1198 *input_line_pointer
= c
;
1199 str
= input_line_pointer
;
1200 input_line_pointer
= hold
;
1202 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']')
1206 else if ((operand
->flags
& V850_OPERAND_CC
) != 0)
1208 if (!cc_name (& ex
))
1210 errmsg
= "invalid condition code name";
1213 /* start-sanitize-v850e */
1214 else if (operand
->flags
& V850E_PUSH_POP
)
1216 errmsg
= parse_register_list (& insn
, operand
);
1218 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1219 ex
.X_op
= O_constant
;
1220 ex
.X_add_number
= 0;
1222 /* end-sanitize-v850e */
1223 /* start-sanitize-v850e */
1224 else if (operand
->flags
& V850E_IMMEDIATE16
)
1228 if (ex
.X_op
!= O_constant
)
1229 errmsg
= "constant expression expected";
1230 else if (ex
.X_add_number
& 0xffff0000)
1232 if (ex
.X_add_number
& 0xffff)
1233 errmsg
= "constant too big to fit into instruction";
1234 else if ((insn
& 0x001fffc0) == 0x00130780)
1235 ex
.X_add_number
>>= 16;
1237 errmsg
= "constant too big to fit into instruction";
1240 extra_data_after_insn
= true;
1242 extra_data
= ex
.X_add_number
;
1243 ex
.X_add_number
= 0;
1245 /* end-sanitize-v850e */
1246 /* start-sanitize-v850e */
1247 else if (operand
->flags
& V850E_IMMEDIATE32
)
1251 if (ex
.X_op
!= O_constant
)
1252 errmsg
= "constant expression expected";
1254 extra_data_after_insn
= true;
1256 extra_data
= ex
.X_add_number
;
1257 ex
.X_add_number
= 0;
1259 /* end-sanitize-v850e */
1260 else if (register_name (&ex
)
1261 && (operand
->flags
& V850_OPERAND_REG
) == 0)
1263 errmsg
= "syntax error: register not expected";
1265 else if (system_register_name (& ex
, false)
1266 && (operand
->flags
& V850_OPERAND_SRG
) == 0)
1268 errmsg
= "syntax error: system register not expected";
1270 else if (cc_name (&ex
)
1271 && (operand
->flags
& V850_OPERAND_CC
) == 0)
1273 errmsg
= "syntax error: condition code not expected";
1278 /* start-sanitize-v850e */
1280 If we are assembling a MOV instruction (or a CALLT.... :-)
1281 and the immediate value does not fit into the bits available
1282 then create a fake error so that the next MOV instruction
1283 will be selected. This one has a 32 bit immediate field. */
1285 if (((insn
& 0x07e0) == 0x0200)
1286 && ex
.X_op
== O_constant
1287 && (ex
.X_add_number
< (- (1 << (operand
->bits
- 1))) || ex
.X_add_number
> ((1 << operand
->bits
) - 1)))
1288 errmsg
= "use bigger instruction";
1289 /* end-sanitize-v850e */
1295 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1300 errmsg
= "illegal operand";
1303 errmsg
= "missing operand";
1306 if ((operand
->flags
& (V850_OPERAND_REG
| V850_OPERAND_SRG
)) == 0)
1308 errmsg
= "invalid operand";
1311 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1316 insn
= v850_insert_operand (insn
, operand
, ex
.X_add_number
,
1321 /* We need to generate a fixup for this expression. */
1322 if (fc
>= MAX_INSN_FIXUPS
)
1323 as_fatal ("too many fixups");
1325 fixups
[ fc
].exp
= ex
;
1326 fixups
[ fc
].opindex
= * opindex_ptr
;
1327 fixups
[ fc
].reloc
= BFD_RELOC_UNUSED
;
1333 str
= input_line_pointer
;
1334 input_line_pointer
= hold
;
1336 while (*str
== ' ' || *str
== ',' || *str
== '[' || *str
== ']'
1345 next_opcode
= opcode
+ 1;
1346 if (next_opcode
->name
!= NULL
&& strcmp (next_opcode
->name
, opcode
->name
) == 0)
1348 opcode
= next_opcode
;
1353 ignore_rest_of_line ();
1354 input_line_pointer
= saved_input_line_pointer
;
1360 while (isspace (*str
))
1364 as_bad ("junk at end of line: `%s'", str
);
1366 input_line_pointer
= str
;
1368 /* Write out the instruction.
1370 Four byte insns have an opcode with the two high bits on. */
1371 if (relaxable
&& fc
> 0)
1373 f
= frag_var (rs_machine_dependent
, 6, 4, 0,
1374 fixups
[0].exp
.X_add_symbol
,
1375 fixups
[0].exp
.X_add_number
,
1376 (char *)fixups
[0].opindex
);
1378 md_number_to_chars (f
, insn
, insn_size
);
1379 md_number_to_chars (f
+ 2, 0, 4);
1384 if ((insn
& 0x0600) == 0x0600)
1389 /* start-sanitize-v850e */
1390 /* Special case: 32 bit MOV */
1391 if ((insn
& 0xffe0) == 0x0620)
1393 /* end_sanitize-v850e */
1395 f
= frag_more (insn_size
);
1397 md_number_to_chars (f
, insn
, insn_size
);
1399 if (extra_data_after_insn
)
1401 char * g
= frag_more (extra_data_len
);
1403 md_number_to_chars (g
, extra_data
, extra_data_len
);
1405 extra_data_after_insn
= false;
1409 /* Create any fixups. At this point we do not use a
1410 bfd_reloc_code_real_type, but instead just use the
1411 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1412 handle fixups for any operand type, although that is admittedly
1413 not a very exciting feature. We pick a BFD reloc type in
1415 for (i
= 0; i
< fc
; i
++)
1417 const struct v850_operand
* operand
;
1419 operand
= & v850_operands
[ fixups
[i
].opindex
];
1421 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1423 reloc_howto_type
* reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1431 size
= bfd_get_reloc_size (reloc_howto
);
1433 if (size
!= 2 && size
!= 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1436 address
= (f
- frag_now
->fr_literal
) + insn_size
- size
;
1438 fixP
= fix_new_exp (frag_now
, address
, size
,
1440 reloc_howto
->pc_relative
,
1443 switch (fixups
[i
].reloc
)
1445 case BFD_RELOC_LO16
:
1446 case BFD_RELOC_HI16
:
1447 case BFD_RELOC_HI16_S
:
1448 fixP
->fx_no_overflow
= 1;
1454 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, 4,
1456 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1457 ((bfd_reloc_code_real_type
)
1458 (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)));
1462 input_line_pointer
= saved_input_line_pointer
;
1466 /* If while processing a fixup, a reloc really needs to be created */
1467 /* then it is done here. */
1470 tc_gen_reloc (seg
, fixp
)
1476 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
1477 reloc
->sym_ptr_ptr
= & fixp
->fx_addsy
->bsym
;
1478 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1479 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
1481 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
1483 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1484 "reloc %d not supported by object file format", (int)fixp
->fx_r_type
);
1488 reloc
->addend
= fixp
->fx_addnumber
;
1493 /* Assume everything will fit in two bytes, then expand as necessary. */
1495 md_estimate_size_before_relax (fragp
, seg
)
1505 md_pcrel_from (fixp
)
1508 /* If the symbol is undefined, or in a section other than our own,
1509 then let the linker figure it out. */
1510 if (fixp
->fx_addsy
!= (symbolS
*) NULL
&& ! S_IS_DEFINED (fixp
->fx_addsy
))
1512 /* The symbol is undefined. Let the linker figure it out. */
1515 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
1519 md_apply_fix3 (fixp
, valuep
, seg
)
1527 if (fixp
->fx_addsy
== (symbolS
*) NULL
)
1532 else if (fixp
->fx_pcrel
)
1536 value
= fixp
->fx_offset
;
1537 if (fixp
->fx_subsy
!= (symbolS
*) NULL
)
1539 if (S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
1540 value
-= S_GET_VALUE (fixp
->fx_subsy
);
1543 /* We don't actually support subtracting a symbol. */
1544 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
1545 "expression too complex");
1550 if ((int) fixp
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
1553 const struct v850_operand
* operand
;
1557 opindex
= (int) fixp
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
1558 operand
= & v850_operands
[ opindex
];
1560 /* Fetch the instruction, insert the fully resolved operand
1561 value, and stuff the instruction back again.
1563 Note the instruction has been stored in little endian
1565 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1567 insn
= bfd_getl32 ((unsigned char *) where
);
1568 insn
= v850_insert_operand (insn
, operand
, (offsetT
) value
,
1569 fixp
->fx_file
, fixp
->fx_line
);
1570 bfd_putl32 ((bfd_vma
) insn
, (unsigned char *) where
);
1574 /* Nothing else to do here. */
1578 /* Determine a BFD reloc value based on the operand information.
1579 We are only prepared to turn a few of the operands into relocs. */
1581 if (operand
->bits
== 22)
1582 fixp
->fx_r_type
= BFD_RELOC_V850_22_PCREL
;
1583 else if (operand
->bits
== 9)
1584 fixp
->fx_r_type
= BFD_RELOC_V850_9_PCREL
;
1585 else if (operand
->bits
== 16)
1586 fixp
->fx_r_type
= BFD_RELOC_V850_16_PCREL
;
1589 as_bad_where(fixp
->fx_file
, fixp
->fx_line
,
1590 "unresolved expression that must be resolved");
1595 else if (fixp
->fx_done
)
1597 /* We still have to insert the value into memory! */
1598 where
= fixp
->fx_frag
->fr_literal
+ fixp
->fx_where
;
1599 if (fixp
->fx_size
== 1)
1600 *where
= value
& 0xff;
1601 if (fixp
->fx_size
== 2)
1602 bfd_putl16 (value
& 0xffff, (unsigned char *) where
);
1603 if (fixp
->fx_size
== 4)
1604 bfd_putl32 (value
, (unsigned char *) where
);
1607 fixp
->fx_addnumber
= value
;
1612 /* Insert an operand value into an instruction. */
1614 static unsigned long
1615 v850_insert_operand (insn
, operand
, val
, file
, line
)
1617 const struct v850_operand
* operand
;
1622 if (operand
->bits
!= 32)
1627 if ((operand
->flags
& V850_OPERAND_SIGNED
) != 0)
1629 max
= (1 << (operand
->bits
- 1)) - 1;
1630 min
= - (1 << (operand
->bits
- 1));
1634 max
= (1 << operand
->bits
) - 1;
1640 if (test
< (offsetT
) min
|| test
> (offsetT
) max
)
1643 "operand out of range (%s not between %ld and %ld)";
1646 sprint_value (buf
, test
);
1647 if (file
== (char *) NULL
)
1648 as_warn (err
, buf
, min
, max
);
1650 as_warn_where (file
, line
, err
, buf
, min
, max
);
1654 if (operand
->insert
)
1656 const char * message
= NULL
;
1658 insn
= (*operand
->insert
) (insn
, val
, & message
);
1659 if (message
!= NULL
)
1661 if (file
== (char *) NULL
)
1664 as_warn_where (file
, line
, message
);
1668 insn
|= (((long) val
& ((1 << operand
->bits
) - 1)) << operand
->shift
);
1673 /* Parse a cons expression. We have to handle hi(), lo(), etc
1676 parse_cons_expression_v850 (exp
)
1679 /* See if there's a reloc prefix like hi() we have to handle. */
1680 hold_cons_reloc
= v850_reloc_prefix (NULL
);
1682 /* Do normal expression parsing. */
1686 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1687 found a reloc prefix, then we use that reloc, else we choose an
1688 appropriate one based on the size of the expression. */
1690 cons_fix_new_v850 (frag
, where
, size
, exp
)
1696 if (hold_cons_reloc
== BFD_RELOC_UNUSED
)
1699 hold_cons_reloc
= BFD_RELOC_32
;
1701 hold_cons_reloc
= BFD_RELOC_16
;
1703 hold_cons_reloc
= BFD_RELOC_8
;
1707 fix_new_exp (frag
, where
, size
, exp
, 0, hold_cons_reloc
);
1709 fix_new (frag
, where
, size
, NULL
, 0, 0, hold_cons_reloc
);