1 /* tc-z8k.c -- Assemble code for the Zilog Z800n
2 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* Written By Steve Chamberlain <sac@cygnus.com>. */
29 #include "safe-ctype.h"
30 #include "opcodes/z8k-opc.h"
32 const char comment_chars
[] = "!";
33 const char line_comment_chars
[] = "#";
34 const char line_separator_chars
[] = ";";
37 extern int coff_flags
;
39 const int md_reloc_size
;
41 /* This is non-zero if target was set from the command line. */
42 static int z8k_target_from_cmdline
;
50 machine
= bfd_mach_z8001
;
56 machine
= bfd_mach_z8002
;
62 even (int ignore ATTRIBUTE_UNUSED
)
65 record_alignment (now_seg
, 1);
79 sval (int ignore ATTRIBUTE_UNUSED
)
82 if (*input_line_pointer
== '\'')
86 c
= *input_line_pointer
++;
91 c
= (tohex (input_line_pointer
[0]) << 4)
92 | tohex (input_line_pointer
[1]);
93 input_line_pointer
+= 2;
95 FRAG_APPEND_1_CHAR (c
);
96 c
= *input_line_pointer
++;
98 demand_empty_rest_of_line ();
102 /* This table describes all the machine specific pseudo-ops the assembler
103 has to support. The fields are:
104 pseudo-op name without dot
105 function to call to execute this pseudo-op
106 Integer arg to pass to the function
109 const pseudo_typeS md_pseudo_table
[] = {
111 {"data.b" , cons
, 1},
112 {"data.w" , cons
, 2},
113 {"data.l" , cons
, 4},
114 {"form" , listing_psize
, 0},
115 {"heading", listing_title
, 0},
116 {"import" , s_ignore
, 0},
117 {"page" , listing_eject
, 0},
118 {"program", s_ignore
, 0},
119 {"z8001" , s_segm
, 1},
120 {"z8002" , s_segm
, 0},
122 {"segm" , s_segm
, 1},
123 {"unsegm" , s_segm
, 0},
124 {"unseg" , s_segm
, 0},
125 {"name" , s_app_file
, 0},
126 {"global" , s_globl
, 0},
131 {"rsect" , obj_coff_section
, 0},
132 {"sect" , obj_coff_section
, 0},
133 {"block" , s_space
, 0},
138 const char EXP_CHARS
[] = "eE";
140 /* Chars that mean this number is a floating point constant.
143 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
145 /* Opcode mnemonics. */
146 static struct hash_control
*opcode_hash_control
;
151 const opcode_entry_type
*opcode
;
154 opcode_hash_control
= hash_new ();
156 for (opcode
= z8k_table
; opcode
->name
; opcode
++)
158 /* Only enter unique codes into the table. */
159 if (idx
!= opcode
->idx
)
160 hash_insert (opcode_hash_control
, opcode
->name
, (char *) opcode
);
164 /* Default to z8002. */
165 if (! z8k_target_from_cmdline
)
168 /* Insert the pseudo ops, too. */
169 for (idx
= 0; md_pseudo_table
[idx
].poc_name
; idx
++)
171 opcode_entry_type
*fake_opcode
;
172 fake_opcode
= (opcode_entry_type
*) malloc (sizeof (opcode_entry_type
));
173 fake_opcode
->name
= md_pseudo_table
[idx
].poc_name
;
174 fake_opcode
->func
= (void *) (md_pseudo_table
+ idx
);
175 fake_opcode
->opcode
= 250;
176 hash_insert (opcode_hash_control
, fake_opcode
->name
, fake_opcode
);
186 typedef struct z8k_op
{
195 /* Any other register associated with the mode. */
198 /* Any expression. */
202 static expressionS
*da_operand
;
203 static expressionS
*imm_operand
;
208 static int the_flags
;
209 static int the_interrupt
;
212 whatreg (int *reg
, char *src
)
214 if (ISDIGIT (src
[1]))
216 *reg
= (src
[0] - '0') * 10 + src
[1] - '0';
221 *reg
= (src
[0] - '0');
232 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
240 /* Try to parse a reg name. Return a pointer to the first character
241 in SRC after the reg name. */
244 parse_reg (char *src
, int *mode
, unsigned int *reg
)
249 /* Check for stack pointer "sp" alias. */
250 if ((src
[0] == 's' || src
[0] == 'S')
251 && (src
[1] == 'p' || src
[1] == 'P')
252 && (src
[2] == 0 || src
[2] == ','))
256 *mode
= CLASS_REG_LONG
;
261 *mode
= CLASS_REG_WORD
;
267 if (src
[0] == 'r' || src
[0] == 'R')
269 if (src
[1] == 'r' || src
[1] == 'R')
271 if (src
[2] < '0' || src
[2] > '9')
272 return res
; /* Assume no register name but a label starting with 'rr'. */
273 *mode
= CLASS_REG_LONG
;
274 res
= whatreg (reg
, src
+ 2);
277 as_bad (_("register rr%d out of range"), regno
);
279 as_bad (_("register rr%d does not exist"), regno
);
281 else if (src
[1] == 'h' || src
[1] == 'H')
283 if (src
[2] < '0' || src
[2] > '9')
284 return res
; /* Assume no register name but a label starting with 'rh'. */
285 *mode
= CLASS_REG_BYTE
;
286 res
= whatreg (reg
, src
+ 2);
289 as_bad (_("register rh%d out of range"), regno
);
291 else if (src
[1] == 'l' || src
[1] == 'L')
293 if (src
[2] < '0' || src
[2] > '9')
294 return res
; /* Assume no register name but a label starting with 'rl'. */
295 *mode
= CLASS_REG_BYTE
;
296 res
= whatreg (reg
, src
+ 2);
299 as_bad (_("register rl%d out of range"), regno
);
302 else if (src
[1] == 'q' || src
[1] == 'Q')
304 if (src
[2] < '0' || src
[2] > '9')
305 return res
; /* Assume no register name but a label starting with 'rq'. */
306 *mode
= CLASS_REG_QUAD
;
307 res
= whatreg (reg
, src
+ 2);
310 as_bad (_("register rq%d out of range"), regno
);
312 as_bad (_("register rq%d does not exist"), regno
);
316 if (src
[1] < '0' || src
[1] > '9')
317 return res
; /* Assume no register name but a label starting with 'r'. */
318 *mode
= CLASS_REG_WORD
;
319 res
= whatreg (reg
, src
+ 1);
322 as_bad (_("register r%d out of range"), regno
);
329 parse_exp (char *s
, expressionS
*op
)
331 char *save
= input_line_pointer
;
334 input_line_pointer
= s
;
336 if (op
->X_op
== O_absent
)
337 as_bad (_("missing operand"));
338 new = input_line_pointer
;
339 input_line_pointer
= save
;
343 /* The many forms of operand:
358 checkfor (char *ptr
, char what
)
363 as_bad (_("expected %c"), what
);
368 /* Make sure the mode supplied is the size of a word. */
371 regword (int mode
, char *string
)
378 as_bad (_("register is wrong size for a word %s"), string
);
382 /* Make sure the mode supplied is the size of an address. */
385 regaddr (int mode
, char *string
)
389 ok
= segmented_mode
? CLASS_REG_LONG
: CLASS_REG_WORD
;
392 as_bad (_("register is wrong size for address %s"), string
);
401 static struct ctrl_names ctrl_table
[] = {
414 get_ctrl_operand (char **ptr
, struct z8k_op
*mode
, unsigned int dst ATTRIBUTE_UNUSED
)
422 mode
->mode
= CLASS_CTRL
;
423 for (i
= 0; ctrl_table
[i
].name
; i
++)
425 l
= strlen (ctrl_table
[i
].name
);
426 if (! strncasecmp (ctrl_table
[i
].name
, src
, l
))
428 the_ctrl
= ctrl_table
[i
].value
;
429 if (*(src
+ l
) && *(src
+ l
) != ',')
431 *ptr
= src
+ l
; /* Valid control name found: "consume" it. */
443 static struct flag_names flag_table
[] = {
454 get_flags_operand (char **ptr
, struct z8k_op
*mode
, unsigned int dst ATTRIBUTE_UNUSED
)
463 mode
->mode
= CLASS_FLAGS
;
465 for (j
= 0; j
<= 9; j
++)
469 for (i
= 0; flag_table
[i
].name
; i
++)
471 if (flag_table
[i
].name
[0] == src
[j
])
473 the_flags
= the_flags
| flag_table
[i
].value
;
485 struct interrupt_names
{
490 static struct interrupt_names intr_table
[] = {
499 get_interrupt_operand (char **ptr
, struct z8k_op
*mode
, unsigned int dst ATTRIBUTE_UNUSED
)
507 mode
->mode
= CLASS_IMM
;
508 for (i
= 0; intr_table
[i
].name
; i
++)
512 for (j
= 0; intr_table
[i
].name
[j
]; j
++)
514 if (intr_table
[i
].name
[j
] != src
[j
])
517 the_interrupt
= intr_table
[i
].value
;
523 /* No interrupt type specified, opcode won't do anything. */
524 as_warn (_("opcode has no effect"));
533 static struct cc_names table
[] = {
568 get_cc_operand (char **ptr
, struct z8k_op
*mode
, unsigned int dst ATTRIBUTE_UNUSED
)
576 mode
->mode
= CLASS_CC
;
577 for (i
= 0; table
[i
].name
; i
++)
579 l
= strlen (table
[i
].name
);
580 if (! strncasecmp (table
[i
].name
, src
, l
))
582 the_cc
= table
[i
].value
;
583 if (*(src
+ l
) && *(src
+ l
) != ',')
585 *ptr
= src
+ l
; /* Valid cc found: "consume" it. */
589 the_cc
= 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
593 get_operand (char **ptr
, struct z8k_op
*mode
, unsigned int dst ATTRIBUTE_UNUSED
)
604 mode
->mode
= CLASS_IMM
;
605 imm_operand
= &(mode
->exp
);
606 src
= parse_exp (src
+ 1, &(mode
->exp
));
608 else if (*src
== '@')
610 mode
->mode
= CLASS_IR
;
611 src
= parse_reg (src
+ 1, &mode
->regsize
, &mode
->reg
);
617 end
= parse_reg (src
, &mode
->mode
, ®n
);
627 end
= parse_reg (src
, &nw
, &nr
);
634 as_bad (_("Missing ) in ra(rb)"));
638 regaddr (mode
->mode
, "ra(rb) ra");
640 regword (mode
->mode
, "ra(rb) rb");
642 mode
->mode
= CLASS_BX
;
652 src
= parse_exp (src
, &(mode
->exp
));
653 src
= checkfor (src
, ')');
654 mode
->mode
= CLASS_BA
;
657 imm_operand
= &(mode
->exp
);
668 /* No initial reg. */
669 src
= parse_exp (src
, &(mode
->exp
));
673 end
= parse_reg (src
, &(mode
->mode
), ®n
);
674 regword (mode
->mode
, "addr(Ra) ra");
675 mode
->mode
= CLASS_X
;
678 da_operand
= &(mode
->exp
);
679 src
= checkfor (end
, ')');
683 /* Just an address. */
684 mode
->mode
= CLASS_DA
;
687 da_operand
= &(mode
->exp
);
695 get_operands (const opcode_entry_type
*opcode
, char *op_end
, op_type
*operand
)
700 switch (opcode
->noperands
)
710 if (opcode
->arg_info
[0] == CLASS_CC
)
712 get_cc_operand (&ptr
, operand
+ 0, 0);
715 if (*ptr
&& ! is_end_of_line
[(unsigned char) *ptr
])
717 as_bad (_("invalid condition code '%s'"), ptr
);
718 while (*ptr
&& ! is_end_of_line
[(unsigned char) *ptr
])
719 ptr
++; /* Consume rest of line. */
722 else if (opcode
->arg_info
[0] == CLASS_FLAGS
)
723 get_flags_operand (&ptr
, operand
+ 0, 0);
724 else if (opcode
->arg_info
[0] == (CLASS_IMM
+ (ARG_IMM2
)))
725 get_interrupt_operand (&ptr
, operand
+ 0, 0);
727 get_operand (&ptr
, operand
+ 0, 0);
734 if (opcode
->arg_info
[0] == CLASS_CC
)
736 get_cc_operand (&ptr
, operand
+ 0, 0);
739 if (*ptr
!= ',' && strchr (ptr
+ 1, ','))
746 as_bad (_("invalid condition code '%s'"), savptr
);
749 else if (opcode
->arg_info
[0] == CLASS_CTRL
)
751 get_ctrl_operand (&ptr
, operand
+ 0, 0);
756 get_operand (&ptr
, operand
+ 0, 0);
762 get_ctrl_operand (&ptr
, operand
+ 1, 1);
767 get_operand (&ptr
, operand
+ 0, 0);
773 get_operand (&ptr
, operand
+ 1, 1);
777 get_operand (&ptr
, operand
+ 0, 0);
780 get_operand (&ptr
, operand
+ 1, 1);
783 get_operand (&ptr
, operand
+ 2, 2);
787 get_operand (&ptr
, operand
+ 0, 0);
790 get_operand (&ptr
, operand
+ 1, 1);
793 get_operand (&ptr
, operand
+ 2, 2);
796 get_cc_operand (&ptr
, operand
+ 3, 3);
806 /* Passed a pointer to a list of opcodes which use different
807 addressing modes. Return the opcode which matches the opcodes
810 static opcode_entry_type
*
811 get_specific (opcode_entry_type
*opcode
, op_type
*operands
)
813 opcode_entry_type
*this_try
= opcode
;
815 unsigned int noperands
= opcode
->noperands
;
817 int this_index
= opcode
->idx
;
819 while (this_index
== opcode
->idx
&& !found
)
824 for (i
= 0; i
< noperands
; i
++)
826 unsigned int mode
= operands
[i
].mode
;
828 if (((mode
& CLASS_MASK
) == CLASS_IR
) && ((this_try
->arg_info
[i
] & CLASS_MASK
) == CLASS_IRO
))
830 mode
= operands
[i
].mode
= (operands
[i
].mode
& ~CLASS_MASK
) | CLASS_IRO
;
833 if ((mode
& CLASS_MASK
) != (this_try
->arg_info
[i
] & CLASS_MASK
))
835 /* It could be a pc rel operand, if this is a da mode
836 and we like disps, then insert it. */
838 if (mode
== CLASS_DA
&& this_try
->arg_info
[i
] == CLASS_DISP
)
840 /* This is the case. */
841 operands
[i
].mode
= CLASS_DISP
;
843 else if (mode
== CLASS_BA
&& this_try
->arg_info
[i
])
845 /* Can't think of a way to turn what we've been
846 given into something that's OK. */
849 else if (this_try
->arg_info
[i
] & CLASS_PR
)
851 if (mode
== CLASS_REG_LONG
&& segmented_mode
)
855 else if (mode
== CLASS_REG_WORD
&& !segmented_mode
)
865 switch (mode
& CLASS_MASK
)
870 if (operands
[i
].regsize
!= CLASS_REG_WORD
)
871 as_bad (_("invalid indirect register size"));
872 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
875 if ((segmented_mode
&& operands
[i
].regsize
!= CLASS_REG_LONG
)
876 || (!segmented_mode
&& operands
[i
].regsize
!= CLASS_REG_WORD
))
877 as_bad (_("invalid indirect register size"));
878 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
890 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
905 static char buffer
[20];
908 newfix (int ptr
, int type
, int size
, expressionS
*operand
)
912 /* size is in nibbles. */
914 if (operand
->X_add_symbol
915 || operand
->X_op_symbol
916 || operand
->X_add_number
)
925 fix_new_exp (frag_now
,
935 apply_fix (char *ptr
, int type
, expressionS
*operand
, int size
)
937 long n
= operand
->X_add_number
;
939 /* size is in nibbles. */
941 newfix ((ptr
- buffer
) / 2, type
, size
+ 1, operand
);
944 case 8: /* 8 nibbles == 32 bits. */
949 case 4: /* 4 nibbles == 16 bits. */
961 /* Now we know what sort of opcodes it is. Let's build the bytes. */
963 #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
966 build_bytes (opcode_entry_type
*this_try
, struct z8k_op
*operand ATTRIBUTE_UNUSED
)
968 char *output_ptr
= buffer
;
971 unsigned int *class_ptr
;
973 frag_wane (frag_now
);
976 memset (buffer
, 0, sizeof (buffer
));
977 class_ptr
= this_try
->byte_info
;
979 for (nibble
= 0; (c
= *class_ptr
++); nibble
++)
982 switch (c
& CLASS_MASK
)
988 /* Direct address, we don't cope with the SS mode right now. */
991 /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
992 output_ptr
= apply_fix (output_ptr
, R_IMM32
, da_operand
, 8);
996 output_ptr
= apply_fix (output_ptr
, R_IMM16
, da_operand
, 4);
1002 output_ptr
= apply_fix (output_ptr
, R_JR
, da_operand
, 2);
1009 output_ptr
= apply_fix (output_ptr
, R_DISP7
, da_operand
, 2);
1016 output_ptr
= apply_fix (output_ptr
, R_DISP7
, da_operand
, 2);
1017 output_ptr
[-2] = 0x8;
1021 case CLASS_BIT_1OR2
:
1022 *output_ptr
= c
& 0xf;
1025 if (imm_operand
->X_add_number
== 2)
1027 else if (imm_operand
->X_add_number
!= 1)
1028 as_bad (_("immediate must be 1 or 2"));
1031 as_bad (_("immediate 1 or 2 expected"));
1035 *output_ptr
++ = the_cc
;
1038 *output_ptr
++ = the_ctrl
;
1041 *output_ptr
++ = the_ctrl
| 0x8;
1044 *output_ptr
++ = (~the_interrupt
& 0x3);
1047 *output_ptr
++ = (~the_interrupt
& 0x3) | 0x4;
1050 *output_ptr
++ = the_flags
;
1054 *output_ptr
++ = c
& 0xf;
1057 if (reg
[c
& 0xf] == 0)
1058 as_bad (_("can't use R0 here"));
1061 case CLASS_REG_BYTE
:
1062 case CLASS_REG_WORD
:
1063 case CLASS_REG_LONG
:
1064 case CLASS_REG_QUAD
:
1065 /* Insert bit mattern of right reg. */
1066 *output_ptr
++ = reg
[c
& 0xf];
1069 switch (c
& ARG_MASK
)
1072 output_ptr
= apply_fix (output_ptr
, R_CALLR
, da_operand
, 4);
1075 output_ptr
= apply_fix (output_ptr
, R_REL16
, da_operand
, 4);
1078 output_ptr
= apply_fix (output_ptr
, R_IMM16
, da_operand
, 4);
1085 switch (c
& ARG_MASK
)
1088 if (imm_operand
->X_add_number
> 15)
1090 as_bad (_("immediate value out of range"));
1092 imm_operand
->X_add_number
= -imm_operand
->X_add_number
;
1093 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1095 /*case ARG_IMMNMINUS1: not used. */
1097 imm_operand
->X_add_number
--;
1100 if (imm_operand
->X_add_number
> 15)
1102 as_bad (_("immediate value out of range"));
1104 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1107 imm_operand
->X_add_number
= -imm_operand
->X_add_number
;
1110 output_ptr
= apply_fix (output_ptr
, R_IMM8
, imm_operand
, 2);
1113 output_ptr
= apply_fix (output_ptr
, R_IMM16
, imm_operand
, 4);
1116 output_ptr
= apply_fix (output_ptr
, R_IMM32
, imm_operand
, 8);
1125 /* Copy from the nibble buffer into the frag. */
1127 int length
= (output_ptr
- buffer
) / 2;
1129 char *fragp
= frag_more (length
);
1131 while (src
< output_ptr
)
1133 *fragp
= (src
[0] << 4) | src
[1];
1140 /* This is the guts of the machine-dependent assembler. STR points to a
1141 machine dependent instruction. This function is supposed to emit
1142 the frags/bytes it assembles to. */
1145 md_assemble (char *str
)
1150 struct z8k_op operand
[3];
1151 opcode_entry_type
*opcode
;
1153 /* Drop leading whitespace. */
1157 /* Find the op code end. */
1158 for (op_start
= op_end
= str
;
1159 *op_end
!= 0 && *op_end
!= ' ' && ! is_end_of_line
[(unsigned char) *op_end
];
1163 if (op_end
== op_start
)
1165 as_bad (_("can't find opcode "));
1169 *op_end
= 0; /* Zero-terminate op code string for hash_find() call. */
1171 opcode
= (opcode_entry_type
*) hash_find (opcode_hash_control
, op_start
);
1175 as_bad (_("unknown opcode"));
1179 *op_end
= c
; /* Restore original string. */
1181 if (opcode
->opcode
== 250)
1185 char *old
= input_line_pointer
;
1187 /* Was really a pseudo op. */
1189 input_line_pointer
= op_end
;
1193 while (*input_line_pointer
== ' ')
1194 input_line_pointer
++;
1195 p
= (pseudo_typeS
*) (opcode
->func
);
1197 (p
->poc_handler
) (p
->poc_val
);
1198 input_line_pointer
= old
;
1203 char *new_input_line_pointer
;
1205 new_input_line_pointer
= get_operands (opcode
, op_end
, operand
);
1206 if (new_input_line_pointer
)
1207 input_line_pointer
= new_input_line_pointer
;
1209 opcode
= get_specific (opcode
, operand
);
1213 /* Couldn't find an opcode which matched the operands. */
1214 char *where
= frag_more (2);
1219 as_bad (_("Can't find opcode to match operands"));
1223 build_bytes (opcode
, operand
);
1228 tc_crawl_symbol_chain (object_headers
*headers ATTRIBUTE_UNUSED
)
1230 printf (_("call to tc_crawl_symbol_chain \n"));
1233 /* We have no need to default values of symbols. */
1236 md_undefined_symbol (char *name ATTRIBUTE_UNUSED
)
1242 tc_headers_hook (object_headers
*headers ATTRIBUTE_UNUSED
)
1244 printf (_("call to tc_headers_hook \n"));
1247 /* Various routines to kill one day. */
1248 /* Equal to MAX_PRECISION in atof-ieee.c. */
1249 #define MAX_LITTLENUMS 6
1251 /* Turn a string in input_line_pointer into a floating point constant
1252 of type TYPE, and store the appropriate bytes in *LITP. The number
1253 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1254 returned, or NULL on OK. */
1257 md_atof (int type
, char *litP
, int *sizeP
)
1260 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
1261 LITTLENUM_TYPE
*wordP
;
1292 return _("Bad call to MD_ATOF()");
1294 t
= atof_ieee (input_line_pointer
, type
, words
);
1296 input_line_pointer
= t
;
1298 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
1299 for (wordP
= words
; prec
--;)
1301 md_number_to_chars (litP
, (long) (*wordP
++), sizeof (LITTLENUM_TYPE
));
1302 litP
+= sizeof (LITTLENUM_TYPE
);
1307 const char *md_shortopts
= "z:";
1309 struct option md_longopts
[] =
1311 #define OPTION_RELAX (OPTION_MD_BASE)
1312 {"linkrelax", no_argument
, NULL
, OPTION_RELAX
},
1313 {NULL
, no_argument
, NULL
, 0}
1316 size_t md_longopts_size
= sizeof (md_longopts
);
1319 md_parse_option (int c
, char *arg
)
1324 if (!strcmp (arg
, "8001"))
1326 else if (!strcmp (arg
, "8002"))
1330 as_bad (_("invalid architecture -z%s"), arg
);
1333 z8k_target_from_cmdline
= 1;
1348 md_show_usage (FILE *stream
)
1350 fprintf (stream
, _("\
1352 -z8001 generate segmented code\n\
1353 -z8002 generate unsegmented code\n\
1354 -linkrelax create linker relaxable code\n"));
1358 md_convert_frag (object_headers
*headers ATTRIBUTE_UNUSED
,
1359 segT seg ATTRIBUTE_UNUSED
,
1360 fragS
*fragP ATTRIBUTE_UNUSED
)
1362 printf (_("call to md_convert_frag\n"));
1367 md_section_align (segT seg
, valueT size
)
1369 return ((size
+ (1 << section_alignment
[(int) seg
]) - 1)
1370 & (-1 << section_alignment
[(int) seg
]));
1373 /* Attempt to simplify or eliminate a fixup. To indicate that a fixup
1374 has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL,
1375 we will have to generate a reloc entry. */
1377 md_apply_fix3 (fixS
*fixP
, valueT
*valP
, segT segment ATTRIBUTE_UNUSED
)
1379 long val
= * (long *) valP
;
1380 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
1382 switch (fixP
->fx_r_type
)
1385 buf
[0] = (buf
[0] & 0xf0) | (val
& 0xf);
1391 fixP
->fx_no_overflow
= 1;
1397 as_bad (_("cannot branch to odd address"));
1399 if (val
> 127 || val
< -128)
1400 as_warn (_("relative jump out of range"));
1402 fixP
->fx_no_overflow
= 1;
1410 fixP
->fx_no_overflow
= 1;
1416 as_bad (_("cannot branch to odd address"));
1418 if (val
> 0 || val
< -127)
1419 as_bad (_("relative jump out of range"));
1420 *buf
= (*buf
& 0x80) | (-val
& 0x7f);
1421 fixP
->fx_no_overflow
= 1;
1429 fixP
->fx_no_overflow
= 1;
1435 as_bad (_("cannot branch to odd address"));
1436 if (val
> 4096 || val
< -4095)
1437 as_bad (_("relative call out of range"));
1439 *buf
= (*buf
& 0xf0) | ((val
>> 8) & 0xf);
1441 *buf
++ = val
& 0xff;
1442 fixP
->fx_no_overflow
= 1;
1452 *buf
++ = (val
>> 8);
1457 *buf
++ = (val
>> 24);
1458 *buf
++ = (val
>> 16);
1459 *buf
++ = (val
>> 8);
1464 val
= val
- fixP
->fx_frag
->fr_address
+ fixP
->fx_where
- fixP
->fx_size
;
1465 if (val
> 32767 || val
< -32768)
1466 as_bad (_("relative address out of range"));
1467 *buf
++ = (val
>> 8);
1469 fixP
->fx_no_overflow
= 1;
1474 *buf
++ = (val
>> 16);
1476 *buf
++ = (val
>> 8);
1482 md_number_to_chars (buf
, val
, fixP
->fx_size
);
1486 printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP
->fx_r_type
);
1490 if (fixP
->fx_addsy
== NULL
&& fixP
->fx_pcrel
== 0)
1495 md_estimate_size_before_relax (fragS
*fragP ATTRIBUTE_UNUSED
,
1496 segT segment_type ATTRIBUTE_UNUSED
)
1498 printf (_("call to md_estimate_size_before_relax\n"));
1502 /* Put number into target byte order. */
1505 md_number_to_chars (char *ptr
, valueT use
, int nbytes
)
1507 number_to_chars_bigendian (ptr
, use
, nbytes
);
1510 /* On the Z8000, a PC-relative offset is relative to the address of the
1511 instruction plus its size. */
1513 md_pcrel_from (fixS
*fixP
)
1515 return fixP
->fx_size
+ fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
1519 tc_coff_symbol_emit_hook (symbolS
*s ATTRIBUTE_UNUSED
)
1524 tc_reloc_mangle (fixS
*fix_ptr
, struct internal_reloc
*intr
, bfd_vma base
)
1526 symbolS
*symbol_ptr
;
1528 if (fix_ptr
->fx_addsy
1529 && fix_ptr
->fx_subsy
)
1531 symbolS
*add
= fix_ptr
->fx_addsy
;
1532 symbolS
*sub
= fix_ptr
->fx_subsy
;
1534 if (S_GET_SEGMENT (add
) != S_GET_SEGMENT (sub
))
1535 as_bad (_("Can't subtract symbols in different sections %s %s"),
1536 S_GET_NAME (add
), S_GET_NAME (sub
));
1539 int diff
= S_GET_VALUE (add
) - S_GET_VALUE (sub
);
1541 fix_ptr
->fx_addsy
= 0;
1542 fix_ptr
->fx_subsy
= 0;
1543 fix_ptr
->fx_offset
+= diff
;
1546 symbol_ptr
= fix_ptr
->fx_addsy
;
1548 /* If this relocation is attached to a symbol then it's ok
1550 if (fix_ptr
->fx_r_type
== 0)
1552 /* cons likes to create reloc32's whatever the size of the reloc. */
1553 switch (fix_ptr
->fx_size
)
1556 intr
->r_type
= R_IMM16
;
1559 intr
->r_type
= R_IMM8
;
1562 intr
->r_type
= R_IMM32
;
1569 intr
->r_type
= fix_ptr
->fx_r_type
;
1571 intr
->r_vaddr
= fix_ptr
->fx_frag
->fr_address
+ fix_ptr
->fx_where
+ base
;
1572 intr
->r_offset
= fix_ptr
->fx_offset
;
1575 intr
->r_symndx
= symbol_ptr
->sy_number
;
1577 intr
->r_symndx
= -1;