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
;
44 static void s_segm
PARAMS ((int));
45 static void even
PARAMS ((int));
46 static int tohex
PARAMS ((int));
47 static void sval
PARAMS ((int));
56 machine
= bfd_mach_z8001
;
62 machine
= bfd_mach_z8002
;
69 int ignore ATTRIBUTE_UNUSED
;
72 record_alignment (now_seg
, 1);
88 int ignore ATTRIBUTE_UNUSED
;
91 if (*input_line_pointer
== '\'')
95 c
= *input_line_pointer
++;
100 c
= (tohex (input_line_pointer
[0]) << 4)
101 | tohex (input_line_pointer
[1]);
102 input_line_pointer
+= 2;
104 FRAG_APPEND_1_CHAR (c
);
105 c
= *input_line_pointer
++;
107 demand_empty_rest_of_line ();
111 /* This table describes all the machine specific pseudo-ops the assembler
112 has to support. The fields are:
113 pseudo-op name without dot
114 function to call to execute this pseudo-op
115 Integer arg to pass to the function
118 const pseudo_typeS md_pseudo_table
[] = {
120 {"data.b" , cons
, 1},
121 {"data.w" , cons
, 2},
122 {"data.l" , cons
, 4},
123 {"form" , listing_psize
, 0},
124 {"heading", listing_title
, 0},
125 {"import" , s_ignore
, 0},
126 {"page" , listing_eject
, 0},
127 {"program", s_ignore
, 0},
128 {"z8001" , s_segm
, 1},
129 {"z8002" , s_segm
, 0},
131 {"segm" , s_segm
, 1},
132 {"unsegm" , s_segm
, 0},
133 {"unseg" , s_segm
, 0},
134 {"name" , s_app_file
, 0},
135 {"global" , s_globl
, 0},
140 {"rsect" , obj_coff_section
, 0},
141 {"sect" , obj_coff_section
, 0},
142 {"block" , s_space
, 0},
147 const char EXP_CHARS
[] = "eE";
149 /* Chars that mean this number is a floating point constant.
152 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
154 /* Opcode mnemonics. */
155 static struct hash_control
*opcode_hash_control
;
160 const opcode_entry_type
*opcode
;
163 opcode_hash_control
= hash_new ();
165 for (opcode
= z8k_table
; opcode
->name
; opcode
++)
167 /* Only enter unique codes into the table. */
168 if (idx
!= opcode
->idx
)
169 hash_insert (opcode_hash_control
, opcode
->name
, (char *) opcode
);
173 /* Default to z8002. */
174 if (! z8k_target_from_cmdline
)
177 /* Insert the pseudo ops, too. */
178 for (idx
= 0; md_pseudo_table
[idx
].poc_name
; idx
++)
180 opcode_entry_type
*fake_opcode
;
181 fake_opcode
= (opcode_entry_type
*) malloc (sizeof (opcode_entry_type
));
182 fake_opcode
->name
= md_pseudo_table
[idx
].poc_name
;
183 fake_opcode
->func
= (void *) (md_pseudo_table
+ idx
);
184 fake_opcode
->opcode
= 250;
185 hash_insert (opcode_hash_control
, fake_opcode
->name
, fake_opcode
);
195 typedef struct z8k_op
{
204 /* Any other register associated with the mode. */
207 /* Any expression. */
211 static expressionS
*da_operand
;
212 static expressionS
*imm_operand
;
220 static char *whatreg
PARAMS ((int *, char *));
221 static char *parse_reg
PARAMS ((char *, int *, unsigned int *));
222 static char *parse_exp
PARAMS ((char *, expressionS
*));
223 static char *checkfor
PARAMS ((char *, char));
224 static void regword
PARAMS ((int, char *));
225 static void regaddr
PARAMS ((int, char *));
226 static void get_ctrl_operand
227 PARAMS ((char **, struct z8k_op
*, unsigned int));
228 static void get_flags_operand
229 PARAMS ((char **, struct z8k_op
*, unsigned int));
230 static void get_interrupt_operand
231 PARAMS ((char **, struct z8k_op
*, unsigned int));
232 static void get_cc_operand
233 PARAMS ((char **, struct z8k_op
*, unsigned int));
234 static void get_operand
235 PARAMS ((char **, struct z8k_op
*, unsigned int));
236 static char *get_operands
237 PARAMS ((const opcode_entry_type
*, char *, op_type
*));
238 static opcode_entry_type
*get_specific
239 PARAMS ((opcode_entry_type
*, op_type
*));
241 PARAMS ((int, int, int, expressionS
*));
242 static char *apply_fix
243 PARAMS ((char *, int, expressionS
*, int));
244 static void build_bytes
245 PARAMS ((opcode_entry_type
*, struct z8k_op
*));
252 if (ISDIGIT (src
[1]))
254 *reg
= (src
[0] - '0') * 10 + src
[1] - '0';
259 *reg
= (src
[0] - '0');
270 WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
278 /* Try to parse a reg name. Return a pointer to the first character
279 in SRC after the reg name. */
282 parse_reg (src
, mode
, reg
)
290 if (src
[0] == 's' && src
[1] == 'p' && (src
[2] == 0 || src
[2] == ','))
294 *mode
= CLASS_REG_LONG
;
299 *mode
= CLASS_REG_WORD
;
308 if (src
[2] < '0' || src
[2] > '9')
309 return res
; /* Assume no register name but a label starting with 'rr'. */
310 *mode
= CLASS_REG_LONG
;
311 res
= whatreg (reg
, src
+ 2);
314 as_bad (_("register rr%d out of range"), regno
);
316 as_bad (_("register rr%d does not exist"), regno
);
318 else if (src
[1] == 'h')
320 if (src
[2] < '0' || src
[2] > '9')
321 return res
; /* Assume no register name but a label starting with 'rh'. */
322 *mode
= CLASS_REG_BYTE
;
323 res
= whatreg (reg
, src
+ 2);
326 as_bad (_("register rh%d out of range"), regno
);
328 else if (src
[1] == 'l')
330 if (src
[2] < '0' || src
[2] > '9')
331 return res
; /* Assume no register name but a label starting with 'rl'. */
332 *mode
= CLASS_REG_BYTE
;
333 res
= whatreg (reg
, src
+ 2);
336 as_bad (_("register rl%d out of range"), regno
);
339 else if (src
[1] == 'q')
341 if (src
[2] < '0' || src
[2] > '9')
342 return res
; /* Assume no register name but a label starting with 'rq'. */
343 *mode
= CLASS_REG_QUAD
;
344 res
= whatreg (reg
, src
+ 2);
347 as_bad (_("register rq%d out of range"), regno
);
349 as_bad (_("register rq%d does not exist"), regno
);
353 if (src
[1] < '0' || src
[1] > '9')
354 return res
; /* Assume no register name but a label starting with 'r'. */
355 *mode
= CLASS_REG_WORD
;
356 res
= whatreg (reg
, src
+ 1);
359 as_bad (_("register r%d out of range"), regno
);
370 char *save
= input_line_pointer
;
373 input_line_pointer
= s
;
375 if (op
->X_op
== O_absent
)
376 as_bad (_("missing operand"));
377 new = input_line_pointer
;
378 input_line_pointer
= save
;
382 /* The many forms of operand:
404 as_bad (_("expected %c"), what
);
409 /* Make sure the mode supplied is the size of a word. */
412 regword (mode
, string
)
421 as_bad (_("register is wrong size for a word %s"), string
);
425 /* Make sure the mode supplied is the size of an address. */
428 regaddr (mode
, string
)
434 ok
= segmented_mode
? CLASS_REG_LONG
: CLASS_REG_WORD
;
437 as_bad (_("register is wrong size for address %s"), string
);
446 struct ctrl_names ctrl_table
[] = {
459 get_ctrl_operand (ptr
, mode
, dst
)
462 unsigned int dst ATTRIBUTE_UNUSED
;
470 mode
->mode
= CLASS_CTRL
;
471 for (i
= 0; ctrl_table
[i
].name
; i
++)
475 for (j
= 0; ctrl_table
[i
].name
[j
]; j
++)
477 if (ctrl_table
[i
].name
[j
] != src
[j
])
480 the_ctrl
= ctrl_table
[i
].value
;
496 struct flag_names flag_table
[] = {
507 get_flags_operand (ptr
, mode
, dst
)
510 unsigned int dst ATTRIBUTE_UNUSED
;
519 mode
->mode
= CLASS_FLAGS
;
521 for (j
= 0; j
<= 9; j
++)
525 for (i
= 0; flag_table
[i
].name
; i
++)
527 if (flag_table
[i
].name
[0] == src
[j
])
529 the_flags
= the_flags
| flag_table
[i
].value
;
542 struct interrupt_names
{
548 struct interrupt_names intr_table
[] = {
557 get_interrupt_operand (ptr
, mode
, dst
)
560 unsigned int dst ATTRIBUTE_UNUSED
;
568 mode
->mode
= CLASS_IMM
;
569 for (i
= 0; intr_table
[i
].name
; i
++)
573 for (j
= 0; intr_table
[i
].name
[j
]; j
++)
575 if (intr_table
[i
].name
[j
] != src
[j
])
578 the_interrupt
= intr_table
[i
].value
;
584 /* No interrupt type specified, opcode won't do anything. */
585 as_warn (_("opcode has no effect"));
595 struct cc_names table
[] = {
622 get_cc_operand (ptr
, mode
, dst
)
625 unsigned int dst ATTRIBUTE_UNUSED
;
633 mode
->mode
= CLASS_CC
;
634 for (i
= 0; table
[i
].name
; i
++)
638 for (j
= 0; table
[i
].name
[j
]; j
++)
640 if (table
[i
].name
[j
] != src
[j
])
643 the_cc
= table
[i
].value
;
653 get_operand (ptr
, mode
, dst
)
656 unsigned int dst ATTRIBUTE_UNUSED
;
667 mode
->mode
= CLASS_IMM
;
668 imm_operand
= &(mode
->exp
);
669 src
= parse_exp (src
+ 1, &(mode
->exp
));
671 else if (*src
== '@')
673 mode
->mode
= CLASS_IR
;
674 src
= parse_reg (src
+ 1, &mode
->regsize
, &mode
->reg
);
680 end
= parse_reg (src
, &mode
->mode
, ®n
);
690 end
= parse_reg (src
, &nw
, &nr
);
697 as_bad (_("Missing ) in ra(rb)"));
701 regaddr (mode
->mode
, "ra(rb) ra");
703 regword (mode
->mode
, "ra(rb) rb");
705 mode
->mode
= CLASS_BX
;
715 src
= parse_exp (src
, &(mode
->exp
));
716 src
= checkfor (src
, ')');
717 mode
->mode
= CLASS_BA
;
720 imm_operand
= &(mode
->exp
);
731 /* No initial reg. */
732 src
= parse_exp (src
, &(mode
->exp
));
736 end
= parse_reg (src
, &(mode
->mode
), ®n
);
737 regword (mode
->mode
, "addr(Ra) ra");
738 mode
->mode
= CLASS_X
;
741 da_operand
= &(mode
->exp
);
742 src
= checkfor (end
, ')');
746 /* Just an address. */
747 mode
->mode
= CLASS_DA
;
750 da_operand
= &(mode
->exp
);
758 get_operands (opcode
, op_end
, operand
)
759 const opcode_entry_type
*opcode
;
767 switch (opcode
->noperands
)
775 if (opcode
->arg_info
[0] == CLASS_CC
)
776 get_cc_operand (&ptr
, operand
+ 0, 0);
778 else if (opcode
->arg_info
[0] == CLASS_FLAGS
)
779 get_flags_operand (&ptr
, operand
+ 0, 0);
781 else if (opcode
->arg_info
[0] == (CLASS_IMM
+ (ARG_IMM2
)))
782 get_interrupt_operand (&ptr
, operand
+ 0, 0);
785 get_operand (&ptr
, operand
+ 0, 0);
792 if (opcode
->arg_info
[0] == CLASS_CC
)
793 get_cc_operand (&ptr
, operand
+ 0, 0);
795 else if (opcode
->arg_info
[0] == CLASS_CTRL
)
797 get_ctrl_operand (&ptr
, operand
+ 0, 0);
802 get_operand (&ptr
, operand
+ 0, 0);
808 get_ctrl_operand (&ptr
, operand
+ 1, 1);
813 get_operand (&ptr
, operand
+ 0, 0);
819 get_operand (&ptr
, operand
+ 1, 1);
823 get_operand (&ptr
, operand
+ 0, 0);
826 get_operand (&ptr
, operand
+ 1, 1);
829 get_operand (&ptr
, operand
+ 2, 2);
833 get_operand (&ptr
, operand
+ 0, 0);
836 get_operand (&ptr
, operand
+ 1, 1);
839 get_operand (&ptr
, operand
+ 2, 2);
842 get_cc_operand (&ptr
, operand
+ 3, 3);
852 /* Passed a pointer to a list of opcodes which use different
853 addressing modes. Return the opcode which matches the opcodes
856 static opcode_entry_type
*
857 get_specific (opcode
, operands
)
858 opcode_entry_type
*opcode
;
861 opcode_entry_type
*this_try
= opcode
;
863 unsigned int noperands
= opcode
->noperands
;
865 int this_index
= opcode
->idx
;
867 while (this_index
== opcode
->idx
&& !found
)
872 for (i
= 0; i
< noperands
; i
++)
874 unsigned int mode
= operands
[i
].mode
;
876 if (((mode
& CLASS_MASK
) == CLASS_IR
) && ((this_try
->arg_info
[i
] & CLASS_MASK
) == CLASS_IRO
))
878 mode
= operands
[i
].mode
= (operands
[i
].mode
& ~CLASS_MASK
) | CLASS_IRO
;
881 if ((mode
& CLASS_MASK
) != (this_try
->arg_info
[i
] & CLASS_MASK
))
883 /* It could be a pc rel operand, if this is a da mode
884 and we like disps, then insert it. */
886 if (mode
== CLASS_DA
&& this_try
->arg_info
[i
] == CLASS_DISP
)
888 /* This is the case. */
889 operands
[i
].mode
= CLASS_DISP
;
891 else if (mode
== CLASS_BA
&& this_try
->arg_info
[i
])
893 /* Can't think of a way to turn what we've been
894 given into something that's OK. */
897 else if (this_try
->arg_info
[i
] & CLASS_PR
)
899 if (mode
== CLASS_REG_LONG
&& segmented_mode
)
903 else if (mode
== CLASS_REG_WORD
&& !segmented_mode
)
913 switch (mode
& CLASS_MASK
)
918 if (operands
[i
].regsize
!= CLASS_REG_WORD
)
919 as_bad (_("invalid indirect register size"));
920 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
923 if ((segmented_mode
&& operands
[i
].regsize
!= CLASS_REG_LONG
)
924 || (!segmented_mode
&& operands
[i
].regsize
!= CLASS_REG_WORD
))
925 as_bad (_("invalid indirect register size"));
926 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
938 reg
[this_try
->arg_info
[i
] & ARG_MASK
] = operands
[i
].reg
;
953 #if 0 /* Not used. */
955 check_operand (operand
, width
, string
)
956 struct z8k_op
*operand
;
960 if (operand
->exp
.X_add_symbol
== 0
961 && operand
->exp
.X_op_symbol
== 0)
964 /* No symbol involved, let's look at offset, it's dangerous if
965 any of the high bits are not 0 or ff's, find out by oring or
966 anding with the width and seeing if the answer is 0 or all
968 if ((operand
->exp
.X_add_number
& ~width
) != 0 &&
969 (operand
->exp
.X_add_number
| width
) != (~0))
971 as_warn (_("operand %s0x%x out of range"),
972 string
, operand
->exp
.X_add_number
);
979 static char buffer
[20];
982 newfix (ptr
, type
, size
, operand
)
985 int size
; /* nibbles. */
986 expressionS
*operand
;
988 if (operand
->X_add_symbol
989 || operand
->X_op_symbol
990 || operand
->X_add_number
)
992 fix_new_exp (frag_now
,
1002 apply_fix (ptr
, type
, operand
, size
)
1005 expressionS
*operand
;
1006 int size
; /* nibbles. */
1008 long n
= operand
->X_add_number
;
1010 newfix ((ptr
- buffer
) / 2, type
, size
+ 1, operand
);
1013 case 8: /* 8 nibbles == 32 bits. */
1018 case 4: /* 4 nibbles == 16 bits. */
1030 /* Now we know what sort of opcodes it is. Let's build the bytes. */
1032 #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
1035 build_bytes (this_try
, operand
)
1036 opcode_entry_type
*this_try
;
1037 struct z8k_op
*operand ATTRIBUTE_UNUSED
;
1039 char *output_ptr
= buffer
;
1042 unsigned int *class_ptr
;
1044 frag_wane (frag_now
);
1047 memset (buffer
, 0, sizeof (buffer
));
1048 class_ptr
= this_try
->byte_info
;
1050 for (nibble
= 0; (c
= *class_ptr
++); nibble
++)
1053 switch (c
& CLASS_MASK
)
1059 /* Direct address, we don't cope with the SS mode right now. */
1062 /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
1063 output_ptr
= apply_fix (output_ptr
, R_IMM32
, da_operand
, 8);
1067 output_ptr
= apply_fix (output_ptr
, R_IMM16
, da_operand
, 4);
1073 output_ptr
= apply_fix (output_ptr
, R_JR
, da_operand
, 2);
1080 output_ptr
= apply_fix (output_ptr
, R_DISP7
, da_operand
, 2);
1087 output_ptr
= apply_fix (output_ptr
, R_DISP7
, da_operand
, 2);
1088 output_ptr
[-2] = 0x8;
1092 case CLASS_BIT_1OR2
:
1093 *output_ptr
= c
& 0xf;
1096 if (imm_operand
->X_add_number
== 2)
1098 else if (imm_operand
->X_add_number
!= 1)
1099 as_bad (_("immediate must be 1 or 2"));
1102 as_bad (_("immediate 1 or 2 expected"));
1106 *output_ptr
++ = the_cc
;
1109 *output_ptr
++ = the_ctrl
;
1112 *output_ptr
++ = the_ctrl
| 0x8;
1115 *output_ptr
++ = (~the_interrupt
& 0x3);
1118 *output_ptr
++ = (~the_interrupt
& 0x3) | 0x4;
1121 *output_ptr
++ = the_flags
;
1125 *output_ptr
++ = c
& 0xf;
1128 if (reg
[c
& 0xf] == 0)
1129 as_bad (_("can't use R0 here"));
1132 case CLASS_REG_BYTE
:
1133 case CLASS_REG_WORD
:
1134 case CLASS_REG_LONG
:
1135 case CLASS_REG_QUAD
:
1136 /* Insert bit mattern of right reg. */
1137 *output_ptr
++ = reg
[c
& 0xf];
1140 switch (c
& ARG_MASK
)
1143 output_ptr
= apply_fix (output_ptr
, R_CALLR
, da_operand
, 4);
1146 output_ptr
= apply_fix (output_ptr
, R_REL16
, da_operand
, 4);
1149 output_ptr
= apply_fix (output_ptr
, R_IMM16
, da_operand
, 4);
1156 switch (c
& ARG_MASK
)
1159 if (imm_operand
->X_add_number
> 15)
1161 as_bad (_("immediate value out of range"));
1163 imm_operand
->X_add_number
= -imm_operand
->X_add_number
;
1164 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1166 /*case ARG_IMMNMINUS1: not used. */
1168 imm_operand
->X_add_number
--;
1171 if (imm_operand
->X_add_number
> 15)
1173 as_bad (_("immediate value out of range"));
1175 output_ptr
= apply_fix (output_ptr
, R_IMM4L
, imm_operand
, 1);
1178 imm_operand
->X_add_number
= -imm_operand
->X_add_number
;
1181 output_ptr
= apply_fix (output_ptr
, R_IMM8
, imm_operand
, 2);
1184 output_ptr
= apply_fix (output_ptr
, R_IMM16
, imm_operand
, 4);
1187 output_ptr
= apply_fix (output_ptr
, R_IMM32
, imm_operand
, 8);
1196 /* Copy from the nibble buffer into the frag. */
1198 int length
= (output_ptr
- buffer
) / 2;
1200 char *fragp
= frag_more (length
);
1202 while (src
< output_ptr
)
1204 *fragp
= (src
[0] << 4) | src
[1];
1211 /* This is the guts of the machine-dependent assembler. STR points to a
1212 machine dependent instruction. This function is supposed to emit
1213 the frags/bytes it assembles to. */
1222 struct z8k_op operand
[3];
1223 opcode_entry_type
*opcode
;
1224 opcode_entry_type
*prev_opcode
;
1226 /* Drop leading whitespace. */
1230 /* Find the op code end. */
1231 for (op_start
= op_end
= str
;
1232 *op_end
!= 0 && *op_end
!= ' ';
1236 if (op_end
== op_start
)
1238 as_bad (_("can't find opcode "));
1244 opcode
= (opcode_entry_type
*) hash_find (opcode_hash_control
, op_start
);
1248 as_bad (_("unknown opcode"));
1252 if (opcode
->opcode
== 250)
1256 char *old
= input_line_pointer
;
1259 /* Was really a pseudo op. */
1261 input_line_pointer
= op_end
;
1265 while (*input_line_pointer
== ' ')
1266 input_line_pointer
++;
1267 p
= (pseudo_typeS
*) (opcode
->func
);
1269 (p
->poc_handler
) (p
->poc_val
);
1270 input_line_pointer
= old
;
1275 char *new_input_line_pointer
;
1277 new_input_line_pointer
= get_operands (opcode
, op_end
, operand
);
1278 if (new_input_line_pointer
)
1279 input_line_pointer
= new_input_line_pointer
;
1280 prev_opcode
= opcode
; /* XXX is this used ?? */
1282 opcode
= get_specific (opcode
, operand
);
1286 /* Couldn't find an opcode which matched the operands. */
1287 char *where
= frag_more (2);
1292 as_bad (_("Can't find opcode to match operands"));
1296 build_bytes (opcode
, operand
);
1301 tc_crawl_symbol_chain (headers
)
1302 object_headers
*headers ATTRIBUTE_UNUSED
;
1304 printf (_("call to tc_crawl_symbol_chain \n"));
1307 /* We have no need to default values of symbols. */
1310 md_undefined_symbol (name
)
1311 char *name ATTRIBUTE_UNUSED
;
1317 tc_headers_hook (headers
)
1318 object_headers
*headers ATTRIBUTE_UNUSED
;
1320 printf (_("call to tc_headers_hook \n"));
1323 /* Various routines to kill one day. */
1324 /* Equal to MAX_PRECISION in atof-ieee.c. */
1325 #define MAX_LITTLENUMS 6
1327 /* Turn a string in input_line_pointer into a floating point constant
1328 of type TYPE, and store the appropriate bytes in *LITP. The number
1329 of LITTLENUMS emitted is stored in *SIZEP. An error message is
1330 returned, or NULL on OK. */
1333 md_atof (type
, litP
, sizeP
)
1339 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
1340 LITTLENUM_TYPE
*wordP
;
1371 return _("Bad call to MD_ATOF()");
1373 t
= atof_ieee (input_line_pointer
, type
, words
);
1375 input_line_pointer
= t
;
1377 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
1378 for (wordP
= words
; prec
--;)
1380 md_number_to_chars (litP
, (long) (*wordP
++), sizeof (LITTLENUM_TYPE
));
1381 litP
+= sizeof (LITTLENUM_TYPE
);
1386 const char *md_shortopts
= "z:";
1388 struct option md_longopts
[] =
1390 #define OPTION_RELAX (OPTION_MD_BASE)
1391 {"linkrelax", no_argument
, NULL
, OPTION_RELAX
},
1392 {NULL
, no_argument
, NULL
, 0}
1395 size_t md_longopts_size
= sizeof (md_longopts
);
1398 md_parse_option (c
, arg
)
1405 if (!strcmp (arg
, "8001"))
1407 else if (!strcmp (arg
, "8002"))
1411 as_bad (_("invalid architecture -z%s"), arg
);
1414 z8k_target_from_cmdline
= 1;
1429 md_show_usage (stream
)
1432 fprintf (stream
, _("\
1434 -z8001 generate segmented code\n\
1435 -z8002 generate unsegmented code\n\
1436 -linkrelax create linker relaxable code\n"));
1440 md_convert_frag (headers
, seg
, fragP
)
1441 object_headers
*headers ATTRIBUTE_UNUSED
;
1442 segT seg ATTRIBUTE_UNUSED
;
1443 fragS
*fragP ATTRIBUTE_UNUSED
;
1445 printf (_("call to md_convert_frag\n"));
1450 md_section_align (seg
, size
)
1454 return ((size
+ (1 << section_alignment
[(int) seg
]) - 1)
1455 & (-1 << section_alignment
[(int) seg
]));
1459 md_apply_fix3 (fixP
, valP
, segment
)
1462 segT segment ATTRIBUTE_UNUSED
;
1464 long val
= * (long *) valP
;
1465 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
1467 switch (fixP
->fx_r_type
)
1470 buf
[0] = (buf
[0] & 0xf0) | (val
& 0xf);
1474 val
= val
- fixP
->fx_frag
->fr_address
+ fixP
->fx_where
- fixP
->fx_size
;
1476 as_bad (_("cannot branch to odd address"));
1478 if (val
> 127 || val
< -128)
1479 as_bad (_("relative jump out of range"));
1481 fixP
->fx_no_overflow
= 1;
1485 val
= val
- fixP
->fx_frag
->fr_address
+ fixP
->fx_where
- fixP
->fx_size
;
1487 as_bad (_("cannot branch to odd address"));
1489 if (val
> 0 || val
< -128)
1490 as_bad (_("relative jump out of range"));
1491 *buf
= (*buf
& 0x80) | (val
& 0x7f);
1492 fixP
->fx_no_overflow
= 1;
1496 if (val
> 8191 || val
< -8192)
1497 as_bad (_("relative call out of range"));
1499 *buf
= (*buf
& 0xf0) | ((val
>> 8) & 0xf);
1501 *buf
++ = val
& 0xff;
1509 *buf
++ = (val
>> 8);
1514 *buf
++ = (val
>> 24);
1515 *buf
++ = (val
>> 16);
1516 *buf
++ = (val
>> 8);
1521 val
= val
- fixP
->fx_frag
->fr_address
+ fixP
->fx_where
- fixP
->fx_size
;
1522 if (val
> 32767 || val
< -32768)
1523 as_bad (_("relative address out of range"));
1524 *buf
++ = (val
>> 8);
1526 fixP
->fx_no_overflow
= 1;
1531 *buf
++ = (val
>> 16);
1533 *buf
++ = (val
>> 8);
1539 md_number_to_chars (buf
, val
, fixP
->fx_size
);
1543 printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP
->fx_r_type
);
1547 if (fixP
->fx_addsy
== NULL
&& fixP
->fx_pcrel
== 0)
1552 md_estimate_size_before_relax (fragP
, segment_type
)
1553 register fragS
*fragP ATTRIBUTE_UNUSED
;
1554 register segT segment_type ATTRIBUTE_UNUSED
;
1556 printf (_("call to md_estimate_size_before_relax\n"));
1560 /* Put number into target byte order. */
1563 md_number_to_chars (ptr
, use
, nbytes
)
1568 number_to_chars_bigendian (ptr
, use
, nbytes
);
1572 md_pcrel_from (fixP
)
1573 fixS
*fixP ATTRIBUTE_UNUSED
;
1579 tc_coff_symbol_emit_hook (s
)
1580 symbolS
*s ATTRIBUTE_UNUSED
;
1585 tc_reloc_mangle (fix_ptr
, intr
, base
)
1587 struct internal_reloc
*intr
;
1591 symbolS
*symbol_ptr
;
1593 if (fix_ptr
->fx_addsy
1594 && fix_ptr
->fx_subsy
)
1596 symbolS
*add
= fix_ptr
->fx_addsy
;
1597 symbolS
*sub
= fix_ptr
->fx_subsy
;
1599 if (S_GET_SEGMENT (add
) != S_GET_SEGMENT (sub
))
1600 as_bad (_("Can't subtract symbols in different sections %s %s"),
1601 S_GET_NAME (add
), S_GET_NAME (sub
));
1604 int diff
= S_GET_VALUE (add
) - S_GET_VALUE (sub
);
1606 fix_ptr
->fx_addsy
= 0;
1607 fix_ptr
->fx_subsy
= 0;
1608 fix_ptr
->fx_offset
+= diff
;
1611 symbol_ptr
= fix_ptr
->fx_addsy
;
1613 /* If this relocation is attached to a symbol then it's ok
1615 if (fix_ptr
->fx_r_type
== 0)
1617 /* cons likes to create reloc32's whatever the size of the reloc. */
1618 switch (fix_ptr
->fx_size
)
1621 intr
->r_type
= R_IMM16
;
1624 intr
->r_type
= R_IMM8
;
1627 intr
->r_type
= R_IMM32
;
1634 intr
->r_type
= fix_ptr
->fx_r_type
;
1636 intr
->r_vaddr
= fix_ptr
->fx_frag
->fr_address
+ fix_ptr
->fx_where
+ base
;
1637 intr
->r_offset
= fix_ptr
->fx_offset
;
1640 intr
->r_symndx
= symbol_ptr
->sy_number
;
1642 intr
->r_symndx
= -1;