Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/arc/arc.h @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
---|---|
date | Tue, 22 Mar 2011 17:18:12 +0900 |
parents | 77e2b8dfacca |
children | 04ced10e8804 |
rev | line source |
---|---|
0 | 1 /* Definitions of target machine for GNU compiler, Argonaut ARC cpu. |
2 Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005, | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
3 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
0 | 4 |
5 This file is part of GCC. | |
6 | |
7 GCC 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 3, or (at your option) | |
10 any later version. | |
11 | |
12 GCC 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. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 /* ??? This is an old port, and is undoubtedly suffering from bit rot. */ | |
22 | |
23 /* Things to do: | |
24 | |
25 - incscc, decscc? | |
26 - print active compiler options in assembler output | |
27 */ | |
28 | |
29 | |
30 #undef ASM_SPEC | |
31 #undef LINK_SPEC | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
32 #undef LIB_SPEC |
0 | 33 #undef STARTFILE_SPEC |
34 #undef ENDFILE_SPEC | |
35 #undef SIZE_TYPE | |
36 #undef PTRDIFF_TYPE | |
37 #undef WCHAR_TYPE | |
38 #undef WCHAR_TYPE_SIZE | |
39 #undef ASM_OUTPUT_LABELREF | |
40 | |
41 /* Print subsidiary information on the compiler version in use. */ | |
42 #define TARGET_VERSION fprintf (stderr, " (arc)") | |
43 | |
44 /* Names to predefine in the preprocessor for this target machine. */ | |
45 #define TARGET_CPU_CPP_BUILTINS() \ | |
46 do \ | |
47 { \ | |
48 builtin_define ("__arc__"); \ | |
49 if (TARGET_BIG_ENDIAN) \ | |
50 builtin_define ("__big_endian__"); \ | |
51 if (arc_cpu_type == 0) \ | |
52 builtin_define ("__base__"); \ | |
53 builtin_assert ("cpu=arc"); \ | |
54 builtin_assert ("machine=arc"); \ | |
55 } while (0) | |
56 | |
57 /* Pass -mmangle-cpu if we get -mcpu=*. | |
58 Doing it this way lets one have it on as default with -mcpu=*, | |
59 but also lets one turn it off with -mno-mangle-cpu. */ | |
60 #define CC1_SPEC "\ | |
61 %{mcpu=*:-mmangle-cpu} \ | |
62 %{EB:%{EL:%emay not use both -EB and -EL}} \ | |
63 %{EB:-mbig-endian} %{EL:-mlittle-endian} \ | |
64 " | |
65 | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
66 #define ASM_SPEC "%{EB} %{EL}" |
0 | 67 |
68 #define LINK_SPEC "%{v} %{EB} %{EL}" | |
69 | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
70 #define LIB_SPEC "-lc" |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
71 |
0 | 72 #define STARTFILE_SPEC "%{!shared:crt0.o%s} crtinit.o%s" |
73 | |
74 #define ENDFILE_SPEC "crtfini.o%s" | |
75 | |
76 /* Instruction set characteristics. | |
77 These are internal macros, set by the appropriate -mcpu= option. */ | |
78 | |
79 /* Nonzero means the cpu has a barrel shifter. */ | |
80 #define TARGET_SHIFTER 0 | |
81 | |
82 /* Which cpu we're compiling for. */ | |
83 extern int arc_cpu_type; | |
84 | |
85 /* Check if CPU is an extension and set `arc_cpu_type' and `arc_mangle_cpu' | |
86 appropriately. The result should be nonzero if the cpu is recognized, | |
87 otherwise zero. This is intended to be redefined in a cover file. | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
88 This is used by arc_handle_option. */ |
0 | 89 #define ARC_EXTENSION_CPU(cpu) 0 |
90 | |
91 | |
92 /* Target machine storage layout. */ | |
93 | |
94 /* Define this if most significant bit is lowest numbered | |
95 in instructions that operate on numbered bit-fields. */ | |
96 #define BITS_BIG_ENDIAN 1 | |
97 | |
98 /* Define this if most significant byte of a word is the lowest numbered. */ | |
99 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN) | |
100 | |
101 /* Define this if most significant word of a multiword number is the lowest | |
102 numbered. */ | |
103 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN) | |
104 | |
105 /* Width of a word, in units (bytes). */ | |
106 #define UNITS_PER_WORD 4 | |
107 | |
108 /* Define this macro if it is advisable to hold scalars in registers | |
109 in a wider mode than that declared by the program. In such cases, | |
110 the value is constrained to be within the bounds of the declared | |
111 type, but kept valid in the wider mode. The signedness of the | |
112 extension may differ from that of the type. */ | |
113 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ | |
114 if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
115 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \ | |
116 { \ | |
117 (MODE) = SImode; \ | |
118 } | |
119 | |
120 /* Allocation boundary (in *bits*) for storing arguments in argument list. */ | |
121 #define PARM_BOUNDARY 32 | |
122 | |
123 /* Boundary (in *bits*) on which stack pointer should be aligned. */ | |
124 #define STACK_BOUNDARY 64 | |
125 | |
126 /* ALIGN FRAMES on word boundaries */ | |
127 #define ARC_STACK_ALIGN(LOC) (((LOC)+7) & ~7) | |
128 | |
129 /* Allocation boundary (in *bits*) for the code of a function. */ | |
130 #define FUNCTION_BOUNDARY 32 | |
131 | |
132 /* Alignment of field after `int : 0' in a structure. */ | |
133 #define EMPTY_FIELD_BOUNDARY 32 | |
134 | |
135 /* Every structure's size must be a multiple of this. */ | |
136 #define STRUCTURE_SIZE_BOUNDARY 8 | |
137 | |
138 /* A bit-field declared as `int' forces `int' alignment for the struct. */ | |
139 #define PCC_BITFIELD_TYPE_MATTERS 1 | |
140 | |
141 /* No data type wants to be aligned rounder than this. */ | |
142 /* This is bigger than currently necessary for the ARC. If 8 byte floats are | |
143 ever added it's not clear whether they'll need such alignment or not. For | |
144 now we assume they will. We can always relax it if necessary but the | |
145 reverse isn't true. */ | |
146 #define BIGGEST_ALIGNMENT 64 | |
147 | |
148 /* The best alignment to use in cases where we have a choice. */ | |
149 #define FASTEST_ALIGNMENT 32 | |
150 | |
151 /* Make strings word-aligned so strcpy from constants will be faster. */ | |
152 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ | |
153 ((TREE_CODE (EXP) == STRING_CST \ | |
154 && (ALIGN) < FASTEST_ALIGNMENT) \ | |
155 ? FASTEST_ALIGNMENT : (ALIGN)) | |
156 | |
157 /* Make arrays of chars word-aligned for the same reasons. */ | |
158 #define DATA_ALIGNMENT(TYPE, ALIGN) \ | |
159 (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
160 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ | |
161 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) | |
162 | |
163 /* Set this nonzero if move instructions will actually fail to work | |
164 when given unaligned data. */ | |
165 /* On the ARC the lower address bits are masked to 0 as necessary. The chip | |
166 won't croak when given an unaligned address, but the insn will still fail | |
167 to produce the correct result. */ | |
168 #define STRICT_ALIGNMENT 1 | |
169 | |
170 /* Layout of source language data types. */ | |
171 | |
172 #define SHORT_TYPE_SIZE 16 | |
173 #define INT_TYPE_SIZE 32 | |
174 #define LONG_TYPE_SIZE 32 | |
175 #define LONG_LONG_TYPE_SIZE 64 | |
176 #define FLOAT_TYPE_SIZE 32 | |
177 #define DOUBLE_TYPE_SIZE 64 | |
178 #define LONG_DOUBLE_TYPE_SIZE 64 | |
179 | |
180 /* Define this as 1 if `char' should by default be signed; else as 0. */ | |
181 #define DEFAULT_SIGNED_CHAR 1 | |
182 | |
183 #define SIZE_TYPE "long unsigned int" | |
184 #define PTRDIFF_TYPE "long int" | |
185 #define WCHAR_TYPE "short unsigned int" | |
186 #define WCHAR_TYPE_SIZE 16 | |
187 | |
188 /* Standard register usage. */ | |
189 | |
190 /* Number of actual hardware registers. | |
191 The hardware registers are assigned numbers for the compiler | |
192 from 0 to just below FIRST_PSEUDO_REGISTER. | |
193 All registers that the compiler knows about must be given numbers, | |
194 even those that are not normally considered general registers. */ | |
195 /* Registers 61, 62, and 63 are not really registers and we needn't treat | |
196 them as such. We still need a register for the condition code. */ | |
197 #define FIRST_PSEUDO_REGISTER 62 | |
198 | |
199 /* 1 for registers that have pervasive standard uses | |
200 and are not available for the register allocator. | |
201 | |
202 0-28 - general purpose registers | |
203 29 - ilink1 (interrupt link register) | |
204 30 - ilink2 (interrupt link register) | |
205 31 - blink (branch link register) | |
206 32-59 - reserved for extensions | |
207 60 - LP_COUNT | |
208 61 - condition code | |
209 | |
210 For doc purposes: | |
211 61 - short immediate data indicator (setting flags) | |
212 62 - long immediate data indicator | |
213 63 - short immediate data indicator (not setting flags). | |
214 | |
215 The general purpose registers are further broken down into: | |
216 0-7 - arguments/results | |
217 8-15 - call used | |
218 16-23 - call saved | |
219 24 - call used, static chain pointer | |
220 25 - call used, gptmp | |
221 26 - global pointer | |
222 27 - frame pointer | |
223 28 - stack pointer | |
224 | |
225 By default, the extension registers are not available. */ | |
226 | |
227 #define FIXED_REGISTERS \ | |
228 { 0, 0, 0, 0, 0, 0, 0, 0, \ | |
229 0, 0, 0, 0, 0, 0, 0, 0, \ | |
230 0, 0, 0, 0, 0, 0, 0, 0, \ | |
231 0, 0, 0, 1, 1, 1, 1, 0, \ | |
232 \ | |
233 1, 1, 1, 1, 1, 1, 1, 1, \ | |
234 1, 1, 1, 1, 1, 1, 1, 1, \ | |
235 1, 1, 1, 1, 1, 1, 1, 1, \ | |
236 1, 1, 1, 1, 1, 1 } | |
237 | |
238 /* 1 for registers not available across function calls. | |
239 These must include the FIXED_REGISTERS and also any | |
240 registers that can be used without being saved. | |
241 The latter must include the registers where values are returned | |
242 and the register where structure-value addresses are passed. | |
243 Aside from that, you can include as many other registers as you like. */ | |
244 | |
245 #define CALL_USED_REGISTERS \ | |
246 { 1, 1, 1, 1, 1, 1, 1, 1, \ | |
247 1, 1, 1, 1, 1, 1, 1, 1, \ | |
248 0, 0, 0, 0, 0, 0, 0, 0, \ | |
249 1, 1, 1, 1, 1, 1, 1, 1, \ | |
250 \ | |
251 1, 1, 1, 1, 1, 1, 1, 1, \ | |
252 1, 1, 1, 1, 1, 1, 1, 1, \ | |
253 1, 1, 1, 1, 1, 1, 1, 1, \ | |
254 1, 1, 1, 1, 1, 1 } | |
255 | |
256 /* If defined, an initializer for a vector of integers, containing the | |
257 numbers of hard registers in the order in which GCC should | |
258 prefer to use them (from most preferred to least). */ | |
259 #define REG_ALLOC_ORDER \ | |
260 { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 1, \ | |
261 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 31, \ | |
262 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ | |
263 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, \ | |
264 27, 28, 29, 30 } | |
265 | |
266 /* Return number of consecutive hard regs needed starting at reg REGNO | |
267 to hold something of mode MODE. | |
268 This is ordinarily the length in words of a value of mode MODE | |
269 but can be less for certain modes in special long registers. */ | |
270 #define HARD_REGNO_NREGS(REGNO, MODE) \ | |
271 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
272 | |
273 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */ | |
274 extern const unsigned int arc_hard_regno_mode_ok[]; | |
275 extern unsigned int arc_mode_class[]; | |
276 #define HARD_REGNO_MODE_OK(REGNO, MODE) \ | |
277 ((arc_hard_regno_mode_ok[REGNO] & arc_mode_class[MODE]) != 0) | |
278 | |
279 /* A C expression that is nonzero if it is desirable to choose | |
280 register allocation so as to avoid move instructions between a | |
281 value of mode MODE1 and a value of mode MODE2. | |
282 | |
283 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, | |
284 MODE2)' are ever different for any R, then `MODES_TIEABLE_P (MODE1, | |
285 MODE2)' must be zero. */ | |
286 | |
287 /* Tie QI/HI/SI modes together. */ | |
288 #define MODES_TIEABLE_P(MODE1, MODE2) \ | |
289 (GET_MODE_CLASS (MODE1) == MODE_INT \ | |
290 && GET_MODE_CLASS (MODE2) == MODE_INT \ | |
291 && GET_MODE_SIZE (MODE1) <= UNITS_PER_WORD \ | |
292 && GET_MODE_SIZE (MODE2) <= UNITS_PER_WORD) | |
293 | |
294 /* Register classes and constants. */ | |
295 | |
296 /* Define the classes of registers for register constraints in the | |
297 machine description. Also define ranges of constants. | |
298 | |
299 One of the classes must always be named ALL_REGS and include all hard regs. | |
300 If there is more than one class, another class must be named NO_REGS | |
301 and contain no registers. | |
302 | |
303 The name GENERAL_REGS must be the name of a class (or an alias for | |
304 another name such as ALL_REGS). This is the class of registers | |
305 that is allowed by "g" or "r" in a register constraint. | |
306 Also, registers outside this class are allocated only when | |
307 instructions express preferences for them. | |
308 | |
309 The classes must be numbered in nondecreasing order; that is, | |
310 a larger-numbered class must never be contained completely | |
311 in a smaller-numbered class. | |
312 | |
313 For any two classes, it is very desirable that there be another | |
314 class that represents their union. | |
315 | |
316 It is important that any condition codes have class NO_REGS. | |
317 See `register_operand'. */ | |
318 | |
319 enum reg_class { | |
320 NO_REGS, LPCOUNT_REG, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES | |
321 }; | |
322 | |
323 #define N_REG_CLASSES (int) LIM_REG_CLASSES | |
324 | |
325 /* Give names of register classes as strings for dump file. */ | |
326 #define REG_CLASS_NAMES \ | |
327 { "NO_REGS", "LPCOUNT_REG", "GENERAL_REGS", "ALL_REGS" } | |
328 | |
329 /* Define which registers fit in which classes. | |
330 This is an initializer for a vector of HARD_REG_SET | |
331 of length N_REG_CLASSES. */ | |
332 | |
333 #define REG_CLASS_CONTENTS \ | |
334 { {0, 0}, {0, 0x10000000}, {0xffffffff, 0xfffffff}, \ | |
335 {0xffffffff, 0x1fffffff} } | |
336 | |
337 /* The same information, inverted: | |
338 Return the class number of the smallest class containing | |
339 reg number REGNO. This could be a conditional expression | |
340 or could index an array. */ | |
341 extern enum reg_class arc_regno_reg_class[FIRST_PSEUDO_REGISTER]; | |
342 #define REGNO_REG_CLASS(REGNO) \ | |
343 (arc_regno_reg_class[REGNO]) | |
344 | |
345 /* The class value for index registers, and the one for base regs. */ | |
346 #define INDEX_REG_CLASS GENERAL_REGS | |
347 #define BASE_REG_CLASS GENERAL_REGS | |
348 | |
349 /* Get reg_class from a letter such as appears in the machine description. */ | |
350 #define REG_CLASS_FROM_LETTER(C) \ | |
351 ((C) == 'l' ? LPCOUNT_REG /* ??? needed? */ \ | |
352 : NO_REGS) | |
353 | |
354 /* These assume that REGNO is a hard or pseudo reg number. | |
355 They give nonzero only if REGNO is a hard reg of the suitable class | |
356 or a pseudo reg currently allocated to a suitable hard reg. | |
357 Since they use reg_renumber, they are safe only once reg_renumber | |
358 has been allocated, which happens in local-alloc.c. */ | |
359 #define REGNO_OK_FOR_BASE_P(REGNO) \ | |
360 ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) | |
361 #define REGNO_OK_FOR_INDEX_P(REGNO) \ | |
362 ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) | |
363 | |
364 /* Return the maximum number of consecutive registers | |
365 needed to represent mode MODE in a register of class CLASS. */ | |
366 #define CLASS_MAX_NREGS(CLASS, MODE) \ | |
367 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
368 | |
369 /* The letters I, J, K, L, M, N, O, P in a register constraint string | |
370 can be used to stand for particular ranges of immediate operands. | |
371 This macro defines what the ranges are. | |
372 C is the letter, and VALUE is a constant value. | |
373 Return 1 if VALUE is in the range specified by C. */ | |
374 /* 'I' is used for short immediates (always signed). | |
375 'J' is used for long immediates. | |
376 'K' is used for any constant up to 64 bits (for 64x32 situations?). */ | |
377 | |
378 /* local to this file */ | |
379 #define SMALL_INT(X) ((unsigned) ((X) + 0x100) < 0x200) | |
380 /* local to this file */ | |
381 #define LARGE_INT(X) \ | |
382 ((X) >= (-(HOST_WIDE_INT) 0x7fffffff - 1) \ | |
383 && (unsigned HOST_WIDE_INT)(X) <= (unsigned HOST_WIDE_INT) 0xffffffff) | |
384 | |
385 #define CONST_OK_FOR_LETTER_P(VALUE, C) \ | |
386 ((C) == 'I' ? SMALL_INT (VALUE) \ | |
387 : (C) == 'J' ? LARGE_INT (VALUE) \ | |
388 : (C) == 'K' ? 1 \ | |
389 : 0) | |
390 | |
391 /* Similar, but for floating constants, and defining letters G and H. | |
392 Here VALUE is the CONST_DOUBLE rtx itself. */ | |
393 /* 'G' is used for integer values for the multiplication insns where the | |
394 operands are extended from 4 bytes to 8 bytes. | |
395 'H' is used when any 64-bit constant is allowed. */ | |
396 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ | |
397 ((C) == 'G' ? arc_double_limm_p (VALUE) \ | |
398 : (C) == 'H' ? 1 \ | |
399 : 0) | |
400 | |
401 /* A C expression that defines the optional machine-dependent constraint | |
402 letters that can be used to segregate specific types of operands, | |
403 usually memory references, for the target machine. It should return 1 if | |
404 VALUE corresponds to the operand type represented by the constraint letter | |
405 C. If C is not defined as an extra constraint, the value returned should | |
406 be 0 regardless of VALUE. */ | |
407 /* ??? This currently isn't used. Waiting for PIC. */ | |
408 #if 0 | |
409 #define EXTRA_CONSTRAINT(VALUE, C) \ | |
410 ((C) == 'R' ? (SYMBOL_REF_FUNCTION_P (VALUE) || GET_CODE (VALUE) == LABEL_REF) \ | |
411 : 0) | |
412 #endif | |
413 | |
414 /* Stack layout and stack pointer usage. */ | |
415 | |
416 /* Define this macro if pushing a word onto the stack moves the stack | |
417 pointer to a smaller address. */ | |
418 #define STACK_GROWS_DOWNWARD | |
419 | |
420 /* Define this to nonzero if the nominal address of the stack frame | |
421 is at the high-address end of the local variables; | |
422 that is, each additional local variable allocated | |
423 goes at a more negative offset in the frame. */ | |
424 #define FRAME_GROWS_DOWNWARD 1 | |
425 | |
426 /* Offset within stack frame to start allocating local variables at. | |
427 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the | |
428 first local allocated. Otherwise, it is the offset to the BEGINNING | |
429 of the first local allocated. */ | |
430 #define STARTING_FRAME_OFFSET 0 | |
431 | |
432 /* Offset from the stack pointer register to the first location at which | |
433 outgoing arguments are placed. */ | |
434 #define STACK_POINTER_OFFSET FIRST_PARM_OFFSET (0) | |
435 | |
436 /* Offset of first parameter from the argument pointer register value. */ | |
437 /* 4 bytes for each of previous fp, return address, and previous gp. | |
438 4 byte reserved area for future considerations. */ | |
439 #define FIRST_PARM_OFFSET(FNDECL) 16 | |
440 | |
441 /* A C expression whose value is RTL representing the address in a | |
442 stack frame where the pointer to the caller's frame is stored. | |
443 Assume that FRAMEADDR is an RTL expression for the address of the | |
444 stack frame itself. | |
445 | |
446 If you don't define this macro, the default is to return the value | |
447 of FRAMEADDR--that is, the stack frame address is also the address | |
448 of the stack word that points to the previous frame. */ | |
449 /* ??? unfinished */ | |
450 /*define DYNAMIC_CHAIN_ADDRESS (FRAMEADDR)*/ | |
451 | |
452 /* A C expression whose value is RTL representing the value of the | |
453 return address for the frame COUNT steps up from the current frame. | |
454 FRAMEADDR is the frame pointer of the COUNT frame, or the frame | |
455 pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' | |
456 is defined. */ | |
457 /* The current return address is in r31. The return address of anything | |
458 farther back is at [%fp,4]. */ | |
459 #if 0 /* The default value should work. */ | |
460 #define RETURN_ADDR_RTX(COUNT, FRAME) \ | |
461 (((COUNT) == -1) \ | |
462 ? gen_rtx_REG (Pmode, 31) \ | |
463 : copy_to_reg (gen_rtx_MEM (Pmode, \ | |
464 memory_address (Pmode, \ | |
465 plus_constant ((FRAME), \ | |
466 UNITS_PER_WORD))))) | |
467 #endif | |
468 | |
469 /* Register to use for pushing function arguments. */ | |
470 #define STACK_POINTER_REGNUM 28 | |
471 | |
472 /* Base register for access to local variables of the function. */ | |
473 #define FRAME_POINTER_REGNUM 27 | |
474 | |
475 /* Base register for access to arguments of the function. */ | |
476 #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM | |
477 | |
478 /* Register in which static-chain is passed to a function. This must | |
479 not be a register used by the prologue. */ | |
480 #define STATIC_CHAIN_REGNUM 24 | |
481 | |
482 /* C statement to store the difference between the frame pointer | |
483 and the stack pointer values immediately after the function prologue. */ | |
484 #define INITIAL_FRAME_POINTER_OFFSET(VAR) \ | |
485 ((VAR) = arc_compute_frame_size (get_frame_size ())) | |
486 | |
487 /* Function argument passing. */ | |
488 | |
489 /* If defined, the maximum amount of space required for outgoing | |
490 arguments will be computed and placed into the variable | |
491 `crtl->outgoing_args_size'. No space will be pushed | |
492 onto the stack for each call; instead, the function prologue should | |
493 increase the stack frame size by this amount. */ | |
494 #define ACCUMULATE_OUTGOING_ARGS 1 | |
495 | |
496 /* Define a data type for recording info about an argument list | |
497 during the scan of that argument list. This data type should | |
498 hold all necessary information about the function itself | |
499 and about the args processed so far, enough to enable macros | |
500 such as FUNCTION_ARG to determine where the next arg should go. */ | |
501 #define CUMULATIVE_ARGS int | |
502 | |
503 /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
504 for a call to a function whose data type is FNTYPE. | |
505 For a library call, FNTYPE is 0. */ | |
506 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ | |
507 ((CUM) = 0) | |
508 | |
509 /* The number of registers used for parameter passing. Local to this file. */ | |
510 #define MAX_ARC_PARM_REGS 8 | |
511 | |
512 /* 1 if N is a possible register number for function argument passing. */ | |
513 #define FUNCTION_ARG_REGNO_P(N) \ | |
514 ((unsigned) (N) < MAX_ARC_PARM_REGS) | |
515 | |
516 | |
517 /* Function results. */ | |
518 | |
519 /* Define how to find the value returned by a function. | |
520 VALTYPE is the data type of the value (as a tree). | |
521 If the precise function being called is known, FUNC is its FUNCTION_DECL; | |
522 otherwise, FUNC is 0. */ | |
523 #define FUNCTION_VALUE(VALTYPE, FUNC) gen_rtx_REG (TYPE_MODE (VALTYPE), 0) | |
524 | |
525 /* Define how to find the value returned by a library function | |
526 assuming the value has mode MODE. */ | |
527 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 0) | |
528 | |
529 /* 1 if N is a possible register number for a function value | |
530 as seen by the caller. */ | |
531 /* ??? What about r1 in DI/DF values. */ | |
532 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) | |
533 | |
534 /* Tell GCC to use TARGET_RETURN_IN_MEMORY. */ | |
535 #define DEFAULT_PCC_STRUCT_RETURN 0 | |
536 | |
537 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, | |
538 the stack pointer does not matter. The value is tested only in | |
539 functions that have frame pointers. | |
540 No definition is equivalent to always zero. */ | |
541 #define EXIT_IGNORE_STACK 0 | |
542 | |
543 /* Epilogue delay slots. */ | |
544 #define DELAY_SLOTS_FOR_EPILOGUE arc_delay_slots_for_epilogue () | |
545 | |
546 #define ELIGIBLE_FOR_EPILOGUE_DELAY(TRIAL, SLOTS_FILLED) \ | |
547 arc_eligible_for_epilogue_delay (TRIAL, SLOTS_FILLED) | |
548 | |
549 /* Output assembler code to FILE to increment profiler label # LABELNO | |
550 for profiling a function entry. */ | |
551 #define FUNCTION_PROFILER(FILE, LABELNO) | |
552 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
553 #define TRAMPOLINE_ALIGNMENT 32 |
0 | 554 #define TRAMPOLINE_SIZE 16 |
555 | |
556 /* Addressing modes, and classification of registers for them. */ | |
557 | |
558 /* Maximum number of registers that can appear in a valid memory address. */ | |
559 /* The `ld' insn allows 2, but the `st' insn only allows 1. */ | |
560 #define MAX_REGS_PER_ADDRESS 1 | |
561 | |
562 /* We have pre inc/dec (load/store with update). */ | |
563 #define HAVE_PRE_INCREMENT 1 | |
564 #define HAVE_PRE_DECREMENT 1 | |
565 | |
566 /* Recognize any constant value that is a valid address. */ | |
567 #define CONSTANT_ADDRESS_P(X) \ | |
568 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ | |
569 || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST) | |
570 | |
571 /* Nonzero if the constant value X is a legitimate general operand. | |
572 We can handle any 32- or 64-bit constant. */ | |
573 /* "1" should work since the largest constant should be a 64 bit critter. */ | |
574 /* ??? Not sure what to do for 64x32 compiler. */ | |
575 #define LEGITIMATE_CONSTANT_P(X) 1 | |
576 | |
577 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx | |
578 and check its validity for a certain class. | |
579 We have two alternate definitions for each of them. | |
580 The usual definition accepts all pseudo regs; the other rejects | |
581 them unless they have been allocated suitable hard regs. | |
582 The symbol REG_OK_STRICT causes the latter definition to be used. | |
583 | |
584 Most source files want to accept pseudo regs in the hope that | |
585 they will get allocated to the class that the insn wants them to be in. | |
586 Source files for reload pass need to be strict. | |
587 After reload, it makes no difference, since pseudo regs have | |
588 been eliminated by then. */ | |
589 | |
590 #ifndef REG_OK_STRICT | |
591 | |
592 /* Nonzero if X is a hard reg that can be used as an index | |
593 or if it is a pseudo reg. */ | |
594 #define REG_OK_FOR_INDEX_P(X) \ | |
595 ((unsigned) REGNO (X) - 32 >= FIRST_PSEUDO_REGISTER - 32) | |
596 /* Nonzero if X is a hard reg that can be used as a base reg | |
597 or if it is a pseudo reg. */ | |
598 #define REG_OK_FOR_BASE_P(X) \ | |
599 ((unsigned) REGNO (X) - 32 >= FIRST_PSEUDO_REGISTER - 32) | |
600 | |
601 #else | |
602 | |
603 /* Nonzero if X is a hard reg that can be used as an index. */ | |
604 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) | |
605 /* Nonzero if X is a hard reg that can be used as a base reg. */ | |
606 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) | |
607 | |
608 #endif | |
609 | |
610 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression | |
611 that is a valid memory address for an instruction. | |
612 The MODE argument is the machine mode for the MEM expression | |
613 that wants to use this address. */ | |
614 /* The `ld' insn allows [reg],[reg+shimm],[reg+limm],[reg+reg],[limm] | |
615 but the `st' insn only allows [reg],[reg+shimm],[limm]. | |
616 The only thing we can do is only allow the most strict case `st' and hope | |
617 other parts optimize out the restrictions for `ld'. */ | |
618 | |
619 /* local to this file */ | |
620 #define RTX_OK_FOR_BASE_P(X) \ | |
621 (REG_P (X) && REG_OK_FOR_BASE_P (X)) | |
622 | |
623 /* local to this file */ | |
624 #define RTX_OK_FOR_INDEX_P(X) \ | |
625 (0 && /*???*/ REG_P (X) && REG_OK_FOR_INDEX_P (X)) | |
626 | |
627 /* local to this file */ | |
628 /* ??? Loads can handle any constant, stores can only handle small ones. */ | |
629 #define RTX_OK_FOR_OFFSET_P(X) \ | |
630 (GET_CODE (X) == CONST_INT && SMALL_INT (INTVAL (X))) | |
631 | |
632 #define LEGITIMATE_OFFSET_ADDRESS_P(MODE, X) \ | |
633 (GET_CODE (X) == PLUS \ | |
634 && RTX_OK_FOR_BASE_P (XEXP (X, 0)) \ | |
635 && (RTX_OK_FOR_INDEX_P (XEXP (X, 1)) \ | |
636 || RTX_OK_FOR_OFFSET_P (XEXP (X, 1)))) | |
637 | |
638 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ | |
639 { if (RTX_OK_FOR_BASE_P (X)) \ | |
640 goto ADDR; \ | |
641 if (LEGITIMATE_OFFSET_ADDRESS_P ((MODE), (X))) \ | |
642 goto ADDR; \ | |
643 if (GET_CODE (X) == CONST_INT && LARGE_INT (INTVAL (X))) \ | |
644 goto ADDR; \ | |
645 if (GET_CODE (X) == SYMBOL_REF \ | |
646 || GET_CODE (X) == LABEL_REF \ | |
647 || GET_CODE (X) == CONST) \ | |
648 goto ADDR; \ | |
649 if ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == PRE_INC) \ | |
650 /* We're restricted here by the `st' insn. */ \ | |
651 && RTX_OK_FOR_BASE_P (XEXP ((X), 0))) \ | |
652 goto ADDR; \ | |
653 } | |
654 | |
655 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, | |
656 return the mode to be used for the comparison. */ | |
657 #define SELECT_CC_MODE(OP, X, Y) \ | |
658 arc_select_cc_mode (OP, X, Y) | |
659 | |
660 /* Return nonzero if SELECT_CC_MODE will never return MODE for a | |
661 floating point inequality comparison. */ | |
662 #define REVERSIBLE_CC_MODE(MODE) 1 /*???*/ | |
663 | |
664 /* Costs. */ | |
665 | |
666 /* Compute extra cost of moving data between one register class | |
667 and another. */ | |
668 #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) 2 | |
669 | |
670 /* Compute the cost of moving data between registers and memory. */ | |
671 /* Memory is 3 times as expensive as registers. | |
672 ??? Is that the right way to look at it? */ | |
673 #define MEMORY_MOVE_COST(MODE,CLASS,IN) \ | |
674 (GET_MODE_SIZE (MODE) <= UNITS_PER_WORD ? 6 : 12) | |
675 | |
676 /* The cost of a branch insn. */ | |
677 /* ??? What's the right value here? Branches are certainly more | |
678 expensive than reg->reg moves. */ | |
679 #define BRANCH_COST(speed_p, predictable_p) 2 | |
680 | |
681 /* Nonzero if access to memory by bytes is slow and undesirable. | |
682 For RISC chips, it means that access to memory by bytes is no | |
683 better than access by words when possible, so grab a whole word | |
684 and maybe make use of that. */ | |
685 #define SLOW_BYTE_ACCESS 1 | |
686 | |
687 /* Define this macro if it is as good or better to call a constant | |
688 function address than to call an address kept in a register. */ | |
689 /* On the ARC, calling through registers is slow. */ | |
690 #define NO_FUNCTION_CSE | |
691 | |
692 /* Section selection. */ | |
693 /* WARNING: These section names also appear in dwarfout.c. */ | |
694 | |
695 /* The names of the text, data, and readonly-data sections are runtime | |
696 selectable. */ | |
697 | |
698 #define ARC_SECTION_FORMAT "\t.section %s" | |
699 #define ARC_DEFAULT_TEXT_SECTION ".text" | |
700 #define ARC_DEFAULT_DATA_SECTION ".data" | |
701 #define ARC_DEFAULT_RODATA_SECTION ".rodata" | |
702 | |
703 extern const char *arc_text_section, *arc_data_section, *arc_rodata_section; | |
704 | |
705 /* initfini.c uses this in an asm. */ | |
706 #if defined (CRT_INIT) || defined (CRT_FINI) | |
707 #define TEXT_SECTION_ASM_OP "\t.section .text" | |
708 #else | |
709 #define TEXT_SECTION_ASM_OP arc_text_section | |
710 #endif | |
711 #define DATA_SECTION_ASM_OP arc_data_section | |
712 | |
713 #undef READONLY_DATA_SECTION_ASM_OP | |
714 #define READONLY_DATA_SECTION_ASM_OP arc_rodata_section | |
715 | |
716 #define BSS_SECTION_ASM_OP "\t.section .bss" | |
717 | |
718 /* Define this macro if jump tables (for tablejump insns) should be | |
719 output in the text section, along with the assembler instructions. | |
720 Otherwise, the readonly data section is used. | |
721 This macro is irrelevant if there is no separate readonly data section. */ | |
722 /*#define JUMP_TABLES_IN_TEXT_SECTION*/ | |
723 | |
724 /* For DWARF. Marginally different than default so output is "prettier" | |
725 (and consistent with above). */ | |
726 #define PUSHSECTION_ASM_OP "\t.section " | |
727 | |
728 /* Tell crtstuff.c we're using ELF. */ | |
729 #define OBJECT_FORMAT_ELF | |
730 | |
731 /* PIC */ | |
732 | |
733 /* The register number of the register used to address a table of static | |
734 data addresses in memory. In some cases this register is defined by a | |
735 processor's ``application binary interface'' (ABI). When this macro | |
736 is defined, RTL is generated for this register once, as with the stack | |
737 pointer and frame pointer registers. If this macro is not defined, it | |
738 is up to the machine-dependent files to allocate such a register (if | |
739 necessary). */ | |
740 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? 26 : INVALID_REGNUM) | |
741 | |
742 /* Define this macro if the register defined by PIC_OFFSET_TABLE_REGNUM is | |
743 clobbered by calls. Do not define this macro if PIC_OFFSET_TABLE_REGNUM | |
744 is not defined. */ | |
745 /* This register is call-saved on the ARC. */ | |
746 /*#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED*/ | |
747 | |
748 /* A C expression that is nonzero if X is a legitimate immediate | |
749 operand on the target machine when generating position independent code. | |
750 You can assume that X satisfies CONSTANT_P, so you need not | |
751 check this. You can also assume `flag_pic' is true, so you need not | |
752 check it either. You need not define this macro if all constants | |
753 (including SYMBOL_REF) can be immediate operands when generating | |
754 position independent code. */ | |
755 /*#define LEGITIMATE_PIC_OPERAND_P(X)*/ | |
756 | |
757 /* Control the assembler format that we output. */ | |
758 | |
759 /* A C string constant describing how to begin a comment in the target | |
760 assembler language. The compiler assumes that the comment will | |
761 end at the end of the line. */ | |
762 #define ASM_COMMENT_START ";" | |
763 | |
764 /* Output to assembler file text saying following lines | |
765 may contain character constants, extra white space, comments, etc. */ | |
766 #define ASM_APP_ON "" | |
767 | |
768 /* Output to assembler file text saying following lines | |
769 no longer contain unusual constructs. */ | |
770 #define ASM_APP_OFF "" | |
771 | |
772 /* Globalizing directive for a label. */ | |
773 #define GLOBAL_ASM_OP "\t.global\t" | |
774 | |
775 /* This is how to output a reference to a user-level label named NAME. | |
776 `assemble_name' uses this. */ | |
777 /* We mangle all user labels to provide protection from linking code | |
778 compiled for different cpus. */ | |
779 /* We work around a dwarfout.c deficiency by watching for labels from it and | |
780 not adding the '_' prefix nor the cpu suffix. There is a comment in | |
781 dwarfout.c that says it should be using (*targetm.asm_out.internal_label). */ | |
782 extern const char *arc_mangle_cpu; | |
783 #define ASM_OUTPUT_LABELREF(FILE, NAME) \ | |
784 do { \ | |
785 if ((NAME)[0] == '.' && (NAME)[1] == 'L') \ | |
786 fprintf (FILE, "%s", NAME); \ | |
787 else \ | |
788 { \ | |
789 fputc ('_', FILE); \ | |
790 if (TARGET_MANGLE_CPU && arc_mangle_cpu != NULL) \ | |
791 fprintf (FILE, "%s_", arc_mangle_cpu); \ | |
792 fprintf (FILE, "%s", NAME); \ | |
793 } \ | |
794 } while (0) | |
795 | |
796 /* Assembler pseudo-op to equate one value with another. */ | |
797 /* ??? This is needed because dwarfout.c provides a default definition too | |
798 late for defaults.h (which contains the default definition of ASM_OUTPUT_DEF | |
799 that we use). */ | |
800 #define SET_ASM_OP "\t.set\t" | |
801 | |
802 /* How to refer to registers in assembler output. | |
803 This sequence is indexed by compiler's hard-register-number (see above). */ | |
804 #define REGISTER_NAMES \ | |
805 {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
806 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ | |
807 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ | |
808 "r24", "r25", "r26", "fp", "sp", "ilink1", "ilink2", "blink", \ | |
809 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \ | |
810 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \ | |
811 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \ | |
812 "r56", "r57", "r58", "r59", "lp_count", "cc"} | |
813 | |
814 /* Entry to the insn conditionalizer. */ | |
815 #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ | |
816 arc_final_prescan_insn (INSN, OPVEC, NOPERANDS) | |
817 | |
818 /* A C expression which evaluates to true if CODE is a valid | |
819 punctuation character for use in the `PRINT_OPERAND' macro. */ | |
820 extern char arc_punct_chars[256]; | |
821 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \ | |
822 arc_punct_chars[(unsigned char) (CHAR)] | |
823 | |
824 /* Print operand X (an rtx) in assembler syntax to file FILE. | |
825 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. | |
826 For `%' followed by punctuation, CODE is the punctuation and X is null. */ | |
827 #define PRINT_OPERAND(FILE, X, CODE) \ | |
828 arc_print_operand (FILE, X, CODE) | |
829 | |
830 /* A C compound statement to output to stdio stream STREAM the | |
831 assembler syntax for an instruction operand that is a memory | |
832 reference whose address is ADDR. ADDR is an RTL expression. */ | |
833 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ | |
834 arc_print_operand_address (FILE, ADDR) | |
835 | |
836 /* This is how to output an element of a case-vector that is absolute. */ | |
837 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ | |
838 do { \ | |
839 char label[30]; \ | |
840 ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ | |
841 fprintf (FILE, "\t.word %%st("); \ | |
842 assemble_name (FILE, label); \ | |
843 fprintf (FILE, ")\n"); \ | |
844 } while (0) | |
845 | |
846 /* This is how to output an element of a case-vector that is relative. */ | |
847 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ | |
848 do { \ | |
849 char label[30]; \ | |
850 ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ | |
851 fprintf (FILE, "\t.word %%st("); \ | |
852 assemble_name (FILE, label); \ | |
853 fprintf (FILE, "-"); \ | |
854 ASM_GENERATE_INTERNAL_LABEL (label, "L", REL); \ | |
855 assemble_name (FILE, label); \ | |
856 fprintf (FILE, ")\n"); \ | |
857 } while (0) | |
858 | |
859 /* The desired alignment for the location counter at the beginning | |
860 of a loop. */ | |
861 /* On the ARC, align loops to 32 byte boundaries (cache line size) | |
862 if -malign-loops. */ | |
863 #define LOOP_ALIGN(LABEL) (TARGET_ALIGN_LOOPS ? 5 : 0) | |
864 | |
865 /* This is how to output an assembler line | |
866 that says to advance the location counter | |
867 to a multiple of 2**LOG bytes. */ | |
868 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ | |
869 do { if ((LOG) != 0) fprintf (FILE, "\t.align %d\n", 1 << (LOG)); } while (0) | |
870 | |
871 /* Debugging information. */ | |
872 | |
873 /* Generate DBX and DWARF debugging information. */ | |
874 #define DBX_DEBUGGING_INFO 1 | |
875 | |
876 /* Prefer STABS (for now). */ | |
877 #undef PREFERRED_DEBUGGING_TYPE | |
878 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
879 | |
880 /* Turn off splitting of long stabs. */ | |
881 #define DBX_CONTIN_LENGTH 0 | |
882 | |
883 /* Miscellaneous. */ | |
884 | |
885 /* Specify the machine mode that this machine uses | |
886 for the index in the tablejump instruction. */ | |
887 #define CASE_VECTOR_MODE Pmode | |
888 | |
889 /* Define if operations between registers always perform the operation | |
890 on the full register even if a narrower mode is specified. */ | |
891 #define WORD_REGISTER_OPERATIONS | |
892 | |
893 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD | |
894 will either zero-extend or sign-extend. The value of this macro should | |
895 be the code that says which one of the two operations is implicitly | |
896 done, UNKNOWN if none. */ | |
897 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND | |
898 | |
899 /* Max number of bytes we can move from memory to memory | |
900 in one reasonably fast instruction. */ | |
901 #define MOVE_MAX 4 | |
902 | |
903 /* Define this to be nonzero if shift instructions ignore all but the low-order | |
904 few bits. */ | |
905 #define SHIFT_COUNT_TRUNCATED 1 | |
906 | |
907 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits | |
908 is done just by pretending it is already truncated. */ | |
909 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 | |
910 | |
911 /* Specify the machine mode that pointers have. | |
912 After generation of rtl, the compiler makes no further distinction | |
913 between pointers and any other objects of this machine mode. */ | |
914 /* ??? The arc doesn't have full 32-bit pointers, but making this PSImode has | |
915 its own problems (you have to add extendpsisi2 and trucnsipsi2 but how does | |
916 one do it without getting excess code?). Try to avoid it. */ | |
917 #define Pmode SImode | |
918 | |
919 /* A function address in a call instruction. */ | |
920 #define FUNCTION_MODE SImode | |
921 | |
922 /* alloca should avoid clobbering the old register save area. */ | |
923 /* ??? Not defined in tm.texi. */ | |
924 #define SETJMP_VIA_SAVE_AREA | |
925 | |
926 /* ARC function types. */ | |
927 enum arc_function_type { | |
928 ARC_FUNCTION_UNKNOWN, ARC_FUNCTION_NORMAL, | |
929 /* These are interrupt handlers. The name corresponds to the register | |
930 name that contains the return address. */ | |
931 ARC_FUNCTION_ILINK1, ARC_FUNCTION_ILINK2 | |
932 }; | |
933 #define ARC_INTERRUPT_P(TYPE) \ | |
934 ((TYPE) == ARC_FUNCTION_ILINK1 || (TYPE) == ARC_FUNCTION_ILINK2) | |
935 /* Compute the type of a function from its DECL. */ |