1 /* tc-sparc.c -- Assemble for the SPARC
2 Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* static const char rcsid[] = "$Id$"; */
27 /* careful, this file includes data *declarations* */
28 #include "sparc-opcode.h"
32 void md_number_to_chars();
35 void md_convert_frag();
36 void md_create_short_jump();
37 void md_create_long_jump();
38 int md_estimate_size_before_relax();
39 void md_ri_to_chars();
40 symbolS
*md_undefined_symbol();
41 static void sparc_ip();
43 static enum sparc_architecture current_architecture
= v6
;
44 static int architecture_requested
= 0;
45 static int warn_on_bump
= 1;
47 const relax_typeS md_relax_table
[] = {
50 /* handle of the OPCODE hash table */
51 static struct hash_control
*op_hash
= NULL
;
53 static void s_seg(), s_proc(), s_data1(), s_reserve(), s_common();
54 extern void s_globl(), s_long(), s_short(), s_space(), cons();
55 extern void s_align_bytes(), s_ignore();
57 const pseudo_typeS md_pseudo_table
[] = {
58 { "align", s_align_bytes
, 0 }, /* Defaulting is invalid (0) */
59 { "common", s_common
, 0 },
60 { "global", s_globl
, 0 },
62 { "optim", s_ignore
, 0 },
63 { "proc", s_proc
, 0 },
64 { "reserve", s_reserve
, 0 },
66 { "skip", s_space
, 0 },
71 const int md_short_jump_size
= 4;
72 const int md_long_jump_size
= 4;
73 const int md_reloc_size
= 12; /* Size of relocation record */
75 /* This array holds the chars that always start a comment. If the
76 pre-processor is disabled, these aren't very useful */
77 const char comment_chars
[] = "!"; /* JF removed '|' from comment_chars */
79 /* This array holds the chars that only start a comment at the beginning of
80 a line. If the line seems to have the form '# 123 filename'
81 .line and .file directives will appear in the pre-processed output */
82 /* Note that input_file.c hand checks for '#' at the beginning of the
83 first line of the input file. This is because the compiler outputs
84 #NO_APP at the beginning of its output. */
85 /* Also note that comments started like this one will always
86 work if '/' isn't otherwise defined. */
87 const char line_comment_chars
[] = "#";
89 /* Chars that can be used to separate mant from exp in floating point nums */
90 const char EXP_CHARS
[] = "eE";
92 /* Chars that mean this number is a floating point constant */
95 const char FLT_CHARS
[] = "rRsSfFdDxXpP";
97 /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
98 changed in read.c . Ideally it shouldn't have to know about it at all,
99 but nothing is ideal around here.
102 static unsigned char octal
[256];
103 #define isoctal(c) octal[c]
104 static unsigned char toHex
[256];
108 unsigned long opcode
;
109 struct nlist
*nlistp
;
112 enum reloc_type reloc
;
113 } the_insn
, set_insn
;
117 static void print_insn(struct sparc_it
*insn
);
119 static int getExpression(char *str
);
122 static void print_insn();
124 static int getExpression();
126 static char *expr_end
;
127 static int special_case
;
130 * Instructions that require wierd handling because they're longer than
133 #define SPECIAL_CASE_SET 1
134 #define SPECIAL_CASE_FDIV 2
137 * sort of like s_lcomm
140 static void s_reserve() {
147 name
= input_line_pointer
;
148 c
= get_symbol_end();
149 p
= input_line_pointer
;
152 if (* input_line_pointer
!= ',') {
153 as_bad("Expected comma after name");
154 ignore_rest_of_line();
157 input_line_pointer
++;
158 if ((temp
= get_absolute_expression()) < 0) {
159 as_bad("BSS length (%d.) <0! Ignored.", temp
);
160 ignore_rest_of_line();
164 symbolP
= symbol_find_or_make(name
);
166 if (strncmp(input_line_pointer
, ",\"bss\"", 6) != 0) {
167 as_bad("bad .reserve segment: `%s'", input_line_pointer
);
170 input_line_pointer
+= 6;
171 if (S_GET_OTHER(symbolP
) == 0
172 && S_GET_DESC(symbolP
) == 0
173 && ((S_GET_TYPE(symbolP
) == N_BSS
174 && S_GET_VALUE(symbolP
) == local_bss_counter
)
175 || !S_IS_DEFINED(symbolP
))) {
176 S_SET_VALUE(symbolP
, local_bss_counter
);
177 S_SET_SEGMENT(symbolP
, SEG_BSS
);
178 symbolP
->sy_frag
= & bss_address_frag
;
179 local_bss_counter
+= temp
;
181 as_warn("Ignoring attempt to re-define symbol from %d. to %d.",
182 S_GET_VALUE(symbolP
), local_bss_counter
);
184 demand_empty_rest_of_line();
188 static void s_common() {
193 register symbolS
* symbolP
;
195 name
= input_line_pointer
;
196 c
= get_symbol_end();
197 /* just after name is now '\0' */
198 p
= input_line_pointer
;
201 if (* input_line_pointer
!= ',') {
202 as_bad("Expected comma after symbol-name");
203 ignore_rest_of_line();
206 input_line_pointer
++; /* skip ',' */
207 if ((temp
= get_absolute_expression ()) < 0) {
208 as_bad(".COMMon length (%d.) <0! Ignored.", temp
);
209 ignore_rest_of_line();
213 symbolP
= symbol_find_or_make(name
);
215 if (S_IS_DEFINED(symbolP
)) {
216 as_bad("Ignoring attempt to re-define symbol");
217 ignore_rest_of_line();
220 if (S_GET_VALUE(symbolP
) != 0) {
221 if (S_GET_VALUE(symbolP
) != temp
) {
222 as_warn("Length of .comm \"%s\" is already %d. Not changed to %d.",
223 S_GET_NAME(symbolP
), S_GET_VALUE(symbolP
), temp
);
226 S_SET_VALUE(symbolP
, temp
);
227 S_SET_EXTERNAL(symbolP
);
229 know(symbolP
->sy_frag
== &zero_address_frag
);
230 if (strncmp(input_line_pointer
, ",\"bss\"", 6) != 0
231 && strncmp(input_line_pointer
, ",\"data\"", 7) != 0) {
232 p
=input_line_pointer
;
233 while(*p
&& *p
!='\n')
237 as_bad("bad .common segment: `%s'", input_line_pointer
);
241 input_line_pointer
+= 6 + (input_line_pointer
[2] == 'd'); /* Skip either */
242 demand_empty_rest_of_line();
246 static void s_seg() {
248 if (strncmp(input_line_pointer
, "\"text\"", 6) == 0) {
249 input_line_pointer
+= 6;
253 if (strncmp(input_line_pointer
, "\"data\"", 6) == 0) {
254 input_line_pointer
+= 6;
258 if (strncmp(input_line_pointer
, "\"data1\"", 7) == 0) {
259 input_line_pointer
+= 7;
263 if (strncmp(input_line_pointer
, "\"bss\"", 5) == 0) {
264 input_line_pointer
+= 5;
265 /* We only support 2 segments -- text and data -- for now, so
266 things in the "bss segment" will have to go into data for now.
267 You can still allocate SEG_BSS stuff with .lcomm or .reserve. */
268 subseg_new(SEG_DATA
, 255); /* FIXME-SOMEDAY */
271 as_bad("Unknown segment type");
272 demand_empty_rest_of_line();
276 static void s_data1() {
277 subseg_new(SEG_DATA
, 1);
278 demand_empty_rest_of_line();
282 static void s_proc() {
283 extern char is_end_of_line
[];
285 while (!is_end_of_line
[*input_line_pointer
]) {
286 ++input_line_pointer
;
288 ++input_line_pointer
;
292 /* This function is called once, at assembler startup time. It should
293 set up all the tables, etc. that the MD part of the assembler will need. */
295 register char *retval
= NULL
;
297 register unsigned int i
= 0;
299 op_hash
= hash_new();
301 as_fatal("Virtual memory exhausted");
303 while (i
< NUMOPCODES
) {
304 const char *name
= sparc_opcodes
[i
].name
;
305 retval
= hash_insert(op_hash
, name
, &sparc_opcodes
[i
]);
306 if(retval
!= NULL
&& *retval
!= '\0') {
307 fprintf (stderr
, "internal error: can't hash `%s': %s\n",
308 sparc_opcodes
[i
].name
, retval
);
313 if (sparc_opcodes
[i
].match
& sparc_opcodes
[i
].lose
) {
314 fprintf (stderr
, "internal error: losing opcode: `%s' \"%s\"\n",
315 sparc_opcodes
[i
].name
, sparc_opcodes
[i
].args
);
319 } while (i
< NUMOPCODES
320 && !strcmp(sparc_opcodes
[i
].name
, name
));
324 as_fatal("Broken assembler. No assembly attempted.");
326 for (i
= '0'; i
< '8'; ++i
)
328 for (i
= '0'; i
<= '9'; ++i
)
330 for (i
= 'a'; i
<= 'f'; ++i
)
331 toHex
[i
] = i
+ 10 - 'a';
332 for (i
= 'A'; i
<= 'F'; ++i
)
333 toHex
[i
] = i
+ 10 - 'A';
340 void md_assemble(str
)
349 /* See if "set" operand is absolute and small; skip sethi if so. */
350 if (special_case
== SPECIAL_CASE_SET
&& the_insn
.exp
.X_seg
== SEG_ABSOLUTE
) {
351 if (the_insn
.exp
.X_add_number
>= -(1<<12)
352 && the_insn
.exp
.X_add_number
< (1<<12)) {
353 the_insn
.opcode
= 0x80102000 /* or %g0,imm,... */
354 | (the_insn
.opcode
& 0x3E000000) /* dest reg */
355 | (the_insn
.exp
.X_add_number
& 0x1FFF); /* imm */
356 special_case
= 0; /* No longer special */
357 the_insn
.reloc
= NO_RELOC
; /* No longer relocated */
362 /* put out the opcode */
363 md_number_to_chars(toP
, the_insn
.opcode
, 4);
365 /* put out the symbol-dependent stuff */
366 if (the_insn
.reloc
!= NO_RELOC
) {
367 fix_new(frag_now
, /* which frag */
368 (toP
- frag_now
->fr_literal
), /* where */
370 the_insn
.exp
.X_add_symbol
,
371 the_insn
.exp
.X_subtract_symbol
,
372 the_insn
.exp
.X_add_number
,
376 switch (special_case
) {
378 case SPECIAL_CASE_SET
:
380 assert(the_insn
.reloc
== RELOC_HI22
);
381 /* See if "set" operand has no low-order bits; skip OR if so. */
382 if (the_insn
.exp
.X_seg
== SEG_ABSOLUTE
383 && ((the_insn
.exp
.X_add_number
& 0x3FF) == 0))
386 rsd
= (the_insn
.opcode
>> 25) & 0x1f;
387 the_insn
.opcode
= 0x80102000 | (rsd
<< 25) | (rsd
<< 14);
388 md_number_to_chars(toP
, the_insn
.opcode
, 4);
389 fix_new(frag_now
, /* which frag */
390 (toP
- frag_now
->fr_literal
), /* where */
392 the_insn
.exp
.X_add_symbol
,
393 the_insn
.exp
.X_subtract_symbol
,
394 the_insn
.exp
.X_add_number
,
399 case SPECIAL_CASE_FDIV
:
400 /* According to information leaked from Sun, the "fdiv" instructions
401 on early SPARC machines would produce incorrect results sometimes.
402 The workaround is to add an fmovs of the destination register to
403 itself just after the instruction. This was true on machines
404 with Weitek 1165 float chips, such as the Sun-4/260 and /280. */
406 assert(the_insn
.reloc
== NO_RELOC
);
408 rsd
= (the_insn
.opcode
>> 25) & 0x1f;
409 the_insn
.opcode
= 0x81A00020 | (rsd
<< 25) | rsd
; /* fmovs dest,dest */
410 md_number_to_chars(toP
, the_insn
.opcode
, 4);
419 } /* md_assemble() */
421 static void sparc_ip(str
)
424 char *error_message
= "";
428 struct sparc_opcode
*insn
;
430 unsigned long opcode
;
435 for (s
= str
; islower(*s
) || (*s
>= '0' && *s
<= '3'); ++s
)
452 as_bad("Unknown opcode: `%s'", str
);
455 if ((insn
= (struct sparc_opcode
*) hash_find(op_hash
, str
)) == NULL
) {
456 as_bad("Unknown opcode: `%s'", str
);
464 opcode
= insn
->match
;
465 bzero(&the_insn
, sizeof(the_insn
));
466 the_insn
.reloc
= NO_RELOC
;
469 * Build the opcode, checking as we go to make
470 * sure that the operands match
472 for (args
= insn
->args
; ; ++args
) {
477 if (strncmp(s
, "%asr", 4) == 0) {
483 while (isdigit(*s
)) {
484 num
= num
*10 + *s
-'0';
488 if (num
< 16 || 31 < num
) {
489 error_message
= ": asr number must be between 15 and 31";
493 opcode
|= (*args
== 'M' ? RS1(num
) : RD(num
));
496 error_message
= ": expecting %asrN";
498 } /* if %asr followed by a number. */
503 /* start-sanitize-v9 */
506 the_insn
.reloc
= RELOC_11
;
510 the_insn
.reloc
= RELOC_WDISP2_14
;
515 the_insn
.reloc
= RELOC_WDISP19
;
520 if (*s
== 'p' && s
[1] == 'n') {
527 if (*s
== 'p' && s
[1] == 't') {
534 if (strncmp(s
, "%amr", 4) == 0) {
544 if (strncmp(s
, "icc", 3) == 0) {
554 if (strncmp(s
, "xcc", 3) == 0) {
564 if (strncmp(s
, "fcc0", 4) == 0) {
574 if (strncmp(s
, "fcc1", 4) == 0) {
584 if (strncmp(s
, "fcc2", 4) == 0) {
594 if (strncmp(s
, "fcc3", 4) == 0) {
601 if (strncmp(s
, "%pc", 3) == 0) {
608 if (strncmp(s
, "%modes", 6) == 0) {
615 if (strncmp(s
, "%tick", 5) == 0) {
621 /* end-sanitize-v9 */
623 case '\0': /* end of args */
639 case '[': /* these must match exactly */
647 case '#': /* must be at least one digit */
649 while (isdigit(*s
)) {
656 case 'C': /* coprocessor state register */
657 if (strncmp(s
, "%csr", 4) == 0) {
663 case 'b': /* next operand is a coprocessor register */
666 if (*s
++ == '%' && *s
++ == 'c' && isdigit(*s
)) {
669 mask
= 10 * (mask
- '0') + (*s
++ - '0');
679 opcode
|= mask
<< 14;
687 opcode
|= mask
<< 25;
693 case 'r': /* next operand must be a register */
700 case 'f': /* frame pointer */
707 case 'g': /* global register */
708 if (isoctal(c
= *s
++)) {
714 case 'i': /* in register */
715 if (isoctal(c
= *s
++)) {
721 case 'l': /* local register */
722 if (isoctal(c
= *s
++)) {
723 mask
= (c
- '0' + 16) ;
728 case 'o': /* out register */
729 if (isoctal(c
= *s
++)) {
730 mask
= (c
- '0' + 8) ;
735 case 's': /* stack pointer */
742 case 'r': /* any register */
743 if (!isdigit(c
= *s
++)) {
747 case '0': case '1': case '2': case '3': case '4':
748 case '5': case '6': case '7': case '8': case '9':
750 if ((c
= 10 * (c
- '0') + (*s
++ - '0')) >= 32) {
763 * Got the register, now figure out where
764 * it goes in the opcode.
769 opcode
|= mask
<< 14;
777 opcode
|= mask
<< 25;
781 opcode
|= (mask
<< 25) | (mask
<< 14);
787 /* start-sanitize-v9 */
791 /* end-sanitize-v9 */
792 case 'e': /* next operand is a floating point register */
795 if (*s
++ == '%' && *s
++ == 'f' && isdigit(*s
)) {
798 mask
= 10 * (mask
- '0') + (*s
++ - '0');
818 /* start-sanitize-v9 */
821 opcode
|= (mask
& 0x1f) << 9;
824 /* end-sanitize-v9 */
830 if (strncmp(s
, "%fsr", 4) == 0) {
836 case 'h': /* high 22 bits */
837 the_insn
.reloc
= RELOC_HI22
;
840 case 'l': /* 22 bit PC relative immediate */
841 the_insn
.reloc
= RELOC_WDISP22
;
845 case 'L': /* 30 bit immediate */
846 the_insn
.reloc
= RELOC_WDISP30
;
850 case 'i': /* 13 bit immediate */
851 the_insn
.reloc
= RELOC_BASE13
;
859 if ((c
= s
[1]) == 'h' && s
[2] == 'i') {
860 the_insn
.reloc
= RELOC_HI22
;
862 } else if (c
== 'l' && s
[2] == 'o') {
863 the_insn
.reloc
= RELOC_LO10
;
865 /* start-sanitize-v9 */
870 the_insn
.reloc
= RELOC_HHI22
;
876 the_insn
.reloc
= RELOC_HLO10
;
879 /* end-sanitize-v9 */
883 /* Note that if the getExpression() fails, we
884 will still have created U entries in the
885 symbol table for the 'symbols' in the input
886 string. Try not to create U symbols for
889 /* This stuff checks to see if the
890 expression ends in +%reg If it does,
891 it removes the register from the
892 expression, and re-sets 's' to point
893 to the right place */
897 for(s1
=s
;*s1
&& *s1
!=','&& *s1
!=']';s1
++)
900 if(s1
!=s
&& isdigit(s1
[-1])) {
901 if(s1
[-2]=='%' && s1
[-3]=='+') {
904 (void)getExpression(s
);
908 } else if(strchr("goli0123456789",s1
[-2]) && s1
[-3]=='%' && s1
[-4]=='+') {
911 (void)getExpression(s
);
918 (void)getExpression(s
);
929 case 'A': /* alternate space */
934 while (isdigit(*s
)) {
935 num
= num
*10 + *s
-'0';
945 if (strncmp(s
, "%psr", 4) == 0) {
951 case 'q': /* floating point queue */
952 if (strncmp(s
, "%fq", 3) == 0) {
958 case 'Q': /* coprocessor queue */
959 if (strncmp(s
, "%cq", 3) == 0) {
966 if (strcmp(str
, "set") == 0) {
967 special_case
= SPECIAL_CASE_SET
;
969 } else if (strncmp(str
, "fdiv", 4) == 0) {
970 special_case
= SPECIAL_CASE_FDIV
;
976 if (strncmp(s
, "%tbr", 4) != 0)
982 if (strncmp(s
, "%wim", 4) != 0)
988 if (strncmp(s
, "%y", 2) != 0)
995 } /* switch on arg code */
997 } /* for each arg that we expect */
1000 /* Args don't match. */
1001 if (((unsigned) (&insn
[1] - sparc_opcodes
)) < NUMOPCODES
1002 && !strcmp(insn
->name
, insn
[1].name
)) {
1007 as_bad("Illegal operands%s", error_message
);
1011 if (insn
->architecture
> current_architecture
) {
1012 if (current_architecture
!= cypress
1013 && (!architecture_requested
|| warn_on_bump
)) {
1016 as_warn("architecture bumped from \"%s\" to \"%s\" on \"%s\"",
1017 architecture_pname
[current_architecture
],
1018 architecture_pname
[insn
->architecture
],
1022 current_architecture
= insn
->architecture
;
1024 as_bad("architecture mismatch on \"%s\" (\"%s\"). current architecture is \"%s\"",
1026 architecture_pname
[insn
->architecture
],
1027 architecture_pname
[current_architecture
]);
1029 } /* if bump ok else error */
1030 } /* if architecture higher */
1034 } /* forever looking for a match */
1036 the_insn
.opcode
= opcode
;
1040 static int getExpression(str
)
1046 save_in
= input_line_pointer
;
1047 input_line_pointer
= str
;
1048 switch (seg
= expression(&the_insn
.exp
)) {
1055 case SEG_DIFFERENCE
:
1061 the_insn
.error
= "bad segment";
1062 expr_end
= input_line_pointer
;
1063 input_line_pointer
=save_in
;
1066 expr_end
= input_line_pointer
;
1067 input_line_pointer
= save_in
;
1069 } /* getExpression() */
1073 This is identical to the md_atof in m68k.c. I think this is right,
1076 Turn a string in input_line_pointer into a floating point constant of type
1077 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
1078 emitted is stored in *sizeP . An error message is returned, or NULL on OK.
1081 /* Equal to MAX_PRECISION in atof-ieee.c */
1082 #define MAX_LITTLENUMS 6
1084 char *md_atof(type
,litP
,sizeP
)
1090 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
1091 LITTLENUM_TYPE
*wordP
;
1123 return "Bad call to MD_ATOF()";
1125 t
=atof_ieee(input_line_pointer
,type
,words
);
1127 input_line_pointer
=t
;
1128 *sizeP
=prec
* sizeof(LITTLENUM_TYPE
);
1129 for(wordP
=words
;prec
--;) {
1130 md_number_to_chars(litP
,(long)(*wordP
++),sizeof(LITTLENUM_TYPE
));
1131 litP
+=sizeof(LITTLENUM_TYPE
);
1133 return ""; /* Someone should teach Dean about null pointers */
1137 * Write out big-endian.
1139 void md_number_to_chars(buf
,val
,n
)
1160 } /* md_number_to_chars() */
1162 /* Apply a fixS to the frags, now that we know the value it ought to
1165 void md_apply_fix(fixP
, val
)
1169 char *buf
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
1171 assert(fixP
->fx_size
== 4);
1172 assert(fixP
->fx_r_type
< NO_RELOC
);
1174 fixP
->fx_addnumber
= val
; /* Remember value for emit_reloc */
1177 * This is a hack. There should be a better way to
1180 if (fixP
->fx_r_type
== RELOC_WDISP30
&& fixP
->fx_addsy
) {
1181 val
+= fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
1184 switch (fixP
->fx_r_type
) {
1187 buf
[0] = 0; /* val >> 24; */
1188 buf
[1] = 0; /* val >> 16; */
1189 buf
[2] = 0; /* val >> 8; */
1190 buf
[3] = 0; /* val; */
1194 case RELOC_8
: /* These don't seem to ever be needed. */
1201 val
= (val
>>= 2) + 1;
1202 buf
[0] |= (val
>> 24) & 0x3f;
1203 buf
[1]= (val
>> 16);
1208 /* start-sanitize-v9 */
1212 as_bad("relocation overflow");
1215 buf
[2] = (val
>> 8) & 0x7;
1216 buf
[3] = val
& 0xff;
1219 case RELOC_WDISP2_14
:
1220 if (val
& ~0xffff) {
1221 as_bad("relocation overflow.");
1224 val
= (val
>>= 2) + 1;
1225 buf
[1] |= ((val
>> 14) & 0x3) << 3;
1226 buf
[2] |= (val
>> 8) & 0x3f ;
1227 buf
[3] = val
& 0xff;
1231 if (val
& ~0x7ffff) {
1232 as_bad("relocation overflow.");
1235 val
= (val
>>= 2) + 1;
1236 buf
[1] |= (val
>> 16) & 0x7;
1237 buf
[2] = (val
>> 8) & 0xff;
1238 buf
[3] = val
& 0xff;
1243 /* intentional fallthrough */
1245 /* end-sanitize-v9 */
1248 if(!fixP
->fx_addsy
) {
1249 buf
[1] |= (val
>> 26) & 0x3f;
1262 /* start-sanitize-v9 */
1266 /* intentional fallthrough */
1268 /* end-sanitize-v9 */
1271 if(!fixP
->fx_addsy
) {
1272 buf
[2] |= (val
>> 8) & 0x03;
1278 case RELOC_SFA_BASE
:
1279 case RELOC_SFA_OFF13
:
1283 buf
[2] |= (val
>> 8) & 0x1f;
1288 val
= (val
>>= 2) + 1;
1291 buf
[1] |= (val
>> 16) & 0x3f;
1300 case RELOC_SEGOFF16
:
1301 case RELOC_GLOB_DAT
:
1302 case RELOC_JMP_SLOT
:
1303 case RELOC_RELATIVE
:
1308 as_bad("bad relocation type: 0x%02x", fixP
->fx_r_type
);
1311 } /* md_apply_fix() */
1313 /* should never be called for sparc */
1314 void md_create_short_jump(ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1321 fprintf(stderr
, "sparc_create_short_jmp\n");
1323 } /* md_create_short_jump() */
1325 /* Translate internal representation of relocation info to target format.
1327 On sparc: first 4 bytes are normal unsigned long address, next three
1328 bytes are index, most sig. byte first. Byte 7 is broken up with
1329 bit 7 as external, bits 6 & 5 unused, and the lower
1330 five bits as relocation type. Next 4 bytes are long addend. */
1331 /* Thanx and a tip of the hat to Michael Bloom, mb@ttidca.tti.com */
1332 void md_ri_to_chars(the_bytes
, ri
)
1334 struct reloc_info_generic
*ri
;
1337 md_number_to_chars(the_bytes
, ri
->r_address
, 4);
1338 /* now the fun stuff */
1339 the_bytes
[4] = (ri
->r_index
>> 16) & 0x0ff;
1340 the_bytes
[5] = (ri
->r_index
>> 8) & 0x0ff;
1341 the_bytes
[6] = ri
->r_index
& 0x0ff;
1342 the_bytes
[7] = ((ri
->r_extern
<< 7) & 0x80) | (0 & 0x60) | (ri
->r_type
& 0x1F);
1344 md_number_to_chars(&the_bytes
[8], ri
->r_addend
, 4);
1345 } /* md_ri_to_chars() */
1347 /* should never be called for sparc */
1348 void md_convert_frag(fragP
)
1349 register fragS
*fragP
;
1351 fprintf(stderr
, "sparc_convert_frag\n");
1353 } /* md_convert_frag() */
1355 /* should never be called for sparc */
1356 void md_create_long_jump(ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1358 long from_addr
, to_addr
;
1362 fprintf(stderr
, "sparc_create_long_jump\n");
1364 } /* md_create_long_jump() */
1366 /* should never be called for sparc */
1367 int md_estimate_size_before_relax(fragP
, segtype
)
1371 fprintf(stderr
, "sparc_estimate_size_before_relax\n");
1374 } /* md_estimate_size_before_relax() */
1377 /* for debugging only */
1378 static void print_insn(insn
)
1379 struct sparc_it
*insn
;
1410 fprintf(stderr
, "ERROR: %s\n");
1412 fprintf(stderr
, "opcode=0x%08x\n", insn
->opcode
);
1413 fprintf(stderr
, "reloc = %s\n", Reloc
[insn
->reloc
]);
1414 fprintf(stderr
, "exp = {
1416 fprintf(stderr
, "\t\tX_add_symbol = %s\n",
1417 ((insn
->exp
.X_add_symbol
!= NULL
)
1418 ? ((S_GET_NAME(insn
->exp
.X_add_symbol
) != NULL
)
1419 ? S_GET_NAME(insn
->exp
.X_add_symbol
)
1422 fprintf(stderr
, "\t\tX_sub_symbol = %s\n",
1423 ((insn
->exp
.X_subtract_symbol
!= NULL
)
1424 ? (S_GET_NAME(insn
->exp
.X_subtract_symbol
)
1425 ? S_GET_NAME(insn
->exp
.X_subtract_symbol
)
1428 fprintf(stderr
, "\t\tX_add_number = %d\n",
1429 insn
->exp
.X_add_number
);
1430 fprintf(stderr
, "}\n");
1432 } /* print_insn() */
1435 /* Set the hook... */
1437 void emit_sparc_reloc();
1438 void (*md_emit_relocations
)() = emit_sparc_reloc
;
1441 * Sparc/AM29K relocations are completely different, so it needs
1442 * this machine dependent routine to emit them.
1444 #if defined(OBJ_AOUT) || defined(OBJ_BOUT)
1445 void emit_sparc_reloc(fixP
, segment_address_in_file
)
1446 register fixS
*fixP
;
1447 relax_addressT segment_address_in_file
;
1449 struct reloc_info_generic ri
;
1450 register symbolS
*symbolP
;
1451 extern char *next_object_file_charP
;
1452 /* long add_number; */
1454 bzero((char *) &ri
, sizeof(ri
));
1455 for (; fixP
; fixP
= fixP
->fx_next
) {
1457 if (fixP
->fx_r_type
>= NO_RELOC
) {
1458 fprintf(stderr
, "fixP->fx_r_type = %d\n", fixP
->fx_r_type
);
1462 if ((symbolP
= fixP
->fx_addsy
) != NULL
) {
1463 ri
.r_address
= fixP
->fx_frag
->fr_address
+
1464 fixP
->fx_where
- segment_address_in_file
;
1465 if ((S_GET_TYPE(symbolP
)) == N_UNDF
) {
1467 ri
.r_index
= symbolP
->sy_number
;
1470 ri
.r_index
= S_GET_TYPE(symbolP
);
1472 if (symbolP
&& symbolP
->sy_frag
) {
1473 ri
.r_addend
= symbolP
->sy_frag
->fr_address
;
1475 ri
.r_type
= fixP
->fx_r_type
;
1476 if (fixP
->fx_pcrel
) {
1477 /* ri.r_addend -= fixP->fx_where; */
1478 ri
.r_addend
-= ri
.r_address
;
1480 ri
.r_addend
= fixP
->fx_addnumber
;
1483 md_ri_to_chars(next_object_file_charP
, &ri
);
1484 next_object_file_charP
+= md_reloc_size
;
1488 } /* emit_sparc_reloc() */
1489 #endif /* aout or bout */
1493 * Invocation line includes a switch not recognized by the base assembler.
1494 * See if it's a processor-specific option. These are:
1497 * Warn on architecture bumps. See also -A.
1499 * -Av6, -Av7, -Acypress, -Av8
1500 * Select the architecture. Instructions or features not
1501 * supported by the selected architecture cause fatal errors.
1503 * The default is to start at v6, and bump the architecture up
1504 * whenever an instruction is seen at a higher level.
1506 * If -bump is specified, a warning is printing when bumping to
1509 * If an architecture is specified, all instructions must match
1510 * that architecture. Any higher level instructions are flagged
1513 * if both an architecture and -bump are specified, the
1514 * architecture starts at the specified level, but bumps are
1517 * Note that where cypress specific instructions conflict with
1518 * other instructions, the other instruction is assumed. Nothing
1519 * is upward compatible with cypress. Thus, to get the cypress
1520 * instruction set you MUST -Acypress.
1523 /* start-sanitize-v9 */
1524 /* There is also a -Av9 architecture option. xoxorich. */
1525 /* end-sanitize-v9 */
1526 int md_parse_option(argP
, cntP
, vecP
)
1534 if (!strcmp(*argP
,"bump")){
1537 } else if (**argP
== 'A'){
1540 for (arch
= architecture_pname
; *arch
!= NULL
; ++arch
){
1541 if (strcmp(p
, *arch
) == 0){
1543 } /* found a match */
1544 } /* walk the pname table */
1547 as_bad("unknown architecture: %s", p
);
1549 current_architecture
= (enum sparc_architecture
) (arch
- architecture_pname
);
1550 architecture_requested
= 1;
1553 /* Unknown option */
1557 **argP
= '\0'; /* Done parsing this switch */
1559 } /* md_parse_option() */
1561 /* We have no need to default values of symbols. */
1564 symbolS
*md_undefined_symbol(name
)
1568 } /* md_undefined_symbol() */
1570 /* Parse an operand that is machine-specific.
1571 We just return without modifying the expression if we have nothing
1575 void md_operand(expressionP
)
1576 expressionS
*expressionP
;
1578 } /* md_operand() */
1580 /* Round up a section size to the appropriate boundary. */
1581 long md_section_align (segment
, size
)
1585 return (size
+ 7) & ~7; /* Round all sects to multiple of 8 */
1586 } /* md_section_align() */
1588 /* Exactly what point is a PC-relative offset relative TO?
1589 On the sparc, they're relative to the address of the offset, plus
1590 its size. This gets us to the following instruction.
1591 (??? Is this right? FIXME-SOON) */
1592 long md_pcrel_from(fixP
)
1595 return fixP
->fx_size
+ fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
1596 } /* md_pcrel_from() */
1605 /* end of tp-sparc.c */