1 /* Definitions of target machine for GNU compiler, for CRX.
2 Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
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/>. */
24 /*****************************************************************************/
25 /* CONTROLLING THE DRIVER */
26 /*****************************************************************************/
28 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
29 %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
30 %{!fexceptions:-fno-exceptions} \
31 %{!fthreadsafe-statics:-fno-threadsafe-statics}"
34 #define STARTFILE_SPEC "crti.o%s crtbegin.o%s"
37 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
40 #define MATH_LIBRARY ""
42 /*****************************************************************************/
43 /* RUN-TIME TARGET SPECIFICATION */
44 /*****************************************************************************/
46 #ifndef TARGET_CPU_CPP_BUILTINS
47 #define TARGET_CPU_CPP_BUILTINS() \
49 builtin_define("__CRX__"); \
50 builtin_define("__CR__"); \
54 #define TARGET_VERSION fputs (" (CRX/ELF)", stderr);
56 /* Put each function in its own section so that PAGE-instruction
57 * relaxation can do its best. */
58 #define OPTIMIZATION_OPTIONS(LEVEL, SIZEFLAG) \
60 if ((LEVEL) || (SIZEFLAG)) \
61 flag_function_sections = 1; \
64 /* Show we can debug even without a frame pointer. */
65 #define CAN_DEBUG_WITHOUT_FP
67 /*****************************************************************************/
69 /*****************************************************************************/
71 #define BITS_BIG_ENDIAN 0
73 #define BYTES_BIG_ENDIAN 0
75 #define WORDS_BIG_ENDIAN 0
77 #define UNITS_PER_WORD 4
79 #define POINTER_SIZE 32
81 #define PARM_BOUNDARY 32
83 #define STACK_BOUNDARY 32
85 #define FUNCTION_BOUNDARY 32
87 #define STRUCTURE_SIZE_BOUNDARY 32
89 #define BIGGEST_ALIGNMENT 32
91 /* In CRX arrays of chars are word-aligned, so strcpy() will be faster. */
92 #define DATA_ALIGNMENT(TYPE, ALIGN) \
93 (TREE_CODE (TYPE) == ARRAY_TYPE && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
94 && (ALIGN) < BITS_PER_WORD \
95 ? (BITS_PER_WORD) : (ALIGN))
97 /* In CRX strings are word-aligned so strcpy from constants will be faster. */
98 #define CONSTANT_ALIGNMENT(CONSTANT, ALIGN) \
99 (TREE_CODE (CONSTANT) == STRING_CST && (ALIGN) < BITS_PER_WORD \
100 ? (BITS_PER_WORD) : (ALIGN))
102 #define STRICT_ALIGNMENT 0
104 #define PCC_BITFIELD_TYPE_MATTERS 1
106 /*****************************************************************************/
107 /* LAYOUT OF SOURCE LANGUAGE DATA TYPES */
108 /*****************************************************************************/
110 #define INT_TYPE_SIZE 32
112 #define SHORT_TYPE_SIZE 16
114 #define LONG_TYPE_SIZE 32
116 #define LONG_LONG_TYPE_SIZE 64
118 #define FLOAT_TYPE_SIZE 32
120 #define DOUBLE_TYPE_SIZE 64
122 #define LONG_DOUBLE_TYPE_SIZE 64
124 #define DEFAULT_SIGNED_CHAR 1
126 #define SIZE_TYPE "unsigned int"
128 #define PTRDIFF_TYPE "int"
130 /*****************************************************************************/
131 /* REGISTER USAGE. */
132 /*****************************************************************************/
134 #define FIRST_PSEUDO_REGISTER 19
136 /* On the CRX, only the stack pointer (r15) is such. */
137 #define FIXED_REGISTERS \
139 /* r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 */ \
140 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
141 /* r11 r12 r13 ra sp r16 r17 cc */ \
142 0, 0, 0, 0, 1, 0, 0, 1 \
145 /* On the CRX, calls clobbers r0-r6 (scratch registers), ra (the return address)
146 * and sp - (the stack pointer which is fixed). */
147 #define CALL_USED_REGISTERS \
149 /* r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 */ \
150 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, \
151 /* r11 r12 r13 ra sp r16 r17 cc */ \
152 0, 0, 0, 1, 1, 1, 1, 1 \
155 #define HARD_REGNO_NREGS(REGNO, MODE) \
156 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
158 /* On the CRX architecture, HILO regs can only hold SI mode. */
159 #define HARD_REGNO_MODE_OK(REGNO, MODE) crx_hard_regno_mode_ok(REGNO, MODE)
161 /* So far no patterns for moving CCMODE data are available */
162 #define AVOID_CCMODE_COPIES
164 /* Interrupt functions can only use registers that have already been saved by
165 * the prologue, even if they would normally be call-clobbered. */
166 #define HARD_REGNO_RENAME_OK(SRC, DEST) \
167 (!crx_interrupt_function_p () || df_regs_ever_live_p (DEST))
169 #define MODES_TIEABLE_P(MODE1, MODE2) 1
183 #define N_REG_CLASSES (int) LIM_REG_CLASSES
185 /* The following macro defines cover classes for Integrated Register
186 Allocator. Cover classes is a set of non-intersected register
187 classes covering all hard registers used for register allocation
188 purpose. Any move between two registers of a cover class should be
189 cheaper than load or store of the registers. The macro value is
190 array of register classes with LIM_REG_CLASSES used as the end
193 #define IRA_COVER_CLASSES \
195 GENERAL_REGS, LIM_REG_CLASSES \
198 #define REG_CLASS_NAMES \
209 #define REG_CLASS_CONTENTS \
211 {0x00000000}, /* NO_REGS */ \
212 {0x00010000}, /* LO_REGS : 16 */ \
213 {0x00020000}, /* HI_REGS : 17 */ \
214 {0x00030000}, /* HILO_REGS : 16, 17 */ \
215 {0x00007fff}, /* NOSP_REGS : 0 - 14 */ \
216 {0x0000ffff}, /* GENERAL_REGS : 0 - 15 */ \
217 {0x0007ffff} /* ALL_REGS : 0 - 18 */ \
220 #define REGNO_REG_CLASS(REGNO) crx_regno_reg_class(REGNO)
222 #define BASE_REG_CLASS GENERAL_REGS
224 #define INDEX_REG_CLASS GENERAL_REGS
226 #define REG_CLASS_FROM_LETTER(C) \
227 ((C) == 'b' ? NOSP_REGS : \
228 (C) == 'l' ? LO_REGS : \
229 (C) == 'h' ? HI_REGS : \
230 (C) == 'k' ? HILO_REGS : \
233 #define REGNO_OK_FOR_BASE_P(REGNO) \
235 || (reg_renumber && (unsigned)reg_renumber[REGNO] < 16))
237 #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO)
239 #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
241 #define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
242 crx_secondary_reload_class (CLASS, MODE, X)
244 #define CLASS_MAX_NREGS(CLASS, MODE) \
245 (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD
247 #define SIGNED_INT_FITS_N_BITS(imm, N) \
248 ((((imm) < ((long long)1<<((N)-1))) && ((imm) >= -((long long)1<<((N)-1)))) ? 1 : 0)
250 #define UNSIGNED_INT_FITS_N_BITS(imm, N) \
251 (((imm) < ((long long)1<<(N)) && (imm) >= (long long)0) ? 1 : 0)
253 #define HILO_REGNO_P(regno) \
254 (reg_classes_intersect_p(REGNO_REG_CLASS(regno), HILO_REGS))
256 #define INT_CST4(VALUE) \
257 (((VALUE) >= -1 && (VALUE) <= 4) || (VALUE) == -4 \
258 || (VALUE) == 7 || (VALUE) == 8 || (VALUE) == 16 || (VALUE) == 32 \
259 || (VALUE) == 20 || (VALUE) == 12 || (VALUE) == 48)
261 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
262 /* Legal const for store immediate instructions */ \
263 ((C) == 'I' ? UNSIGNED_INT_FITS_N_BITS(VALUE, 3) : \
264 (C) == 'J' ? UNSIGNED_INT_FITS_N_BITS(VALUE, 4) : \
265 (C) == 'K' ? UNSIGNED_INT_FITS_N_BITS(VALUE, 5) : \
266 (C) == 'L' ? INT_CST4(VALUE) : \
269 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
270 ((C) == 'G' ? crx_const_double_ok (VALUE) : \
273 /*****************************************************************************/
274 /* STACK LAYOUT AND CALLING CONVENTIONS. */
275 /*****************************************************************************/
277 #define STACK_GROWS_DOWNWARD
279 #define STARTING_FRAME_OFFSET 0
281 #define STACK_POINTER_REGNUM 15
283 #define FRAME_POINTER_REGNUM 13
285 #define ARG_POINTER_REGNUM 12
287 #define STATIC_CHAIN_REGNUM 1
289 #define RETURN_ADDRESS_REGNUM 14
291 #define FIRST_PARM_OFFSET(FNDECL) 0
293 #define FRAME_POINTER_REQUIRED (cfun->calls_alloca)
295 #define ELIMINABLE_REGS \
297 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
298 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
299 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
302 #define CAN_ELIMINATE(FROM, TO) \
303 ((TO) == STACK_POINTER_REGNUM ? ! frame_pointer_needed : 1)
305 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
307 (OFFSET) = crx_initial_elimination_offset ((FROM), (TO)); \
310 /*****************************************************************************/
311 /* PASSING FUNCTION ARGUMENTS */
312 /*****************************************************************************/
314 #define ACCUMULATE_OUTGOING_ARGS (TARGET_NO_PUSH_ARGS)
316 #define PUSH_ARGS (!TARGET_NO_PUSH_ARGS)
318 #define PUSH_ROUNDING(BYTES) (((BYTES) + 3) & ~3)
320 #define RETURN_POPS_ARGS(FNDECL, FUNTYPE, SIZE) 0
322 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
323 ((rtx) crx_function_arg(&(CUM), (MODE), (TYPE), (NAMED)))
325 #ifndef CUMULATIVE_ARGS
326 struct cumulative_args
331 #define CUMULATIVE_ARGS struct cumulative_args
334 /* On the CRX architecture, Varargs routines should receive their parameters on
337 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
338 crx_init_cumulative_args(&(CUM), (FNTYPE), (LIBNAME))
340 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
341 crx_function_arg_advance(&(CUM), (MODE), (TYPE), (NAMED))
343 #define FUNCTION_ARG_REGNO_P(REGNO) crx_function_arg_regno_p(REGNO)
345 /*****************************************************************************/
346 /* RETURNING FUNCTION VALUE */
347 /*****************************************************************************/
349 /* On the CRX, the return value is in R0 */
351 #define FUNCTION_VALUE(VALTYPE, FUNC) \
352 gen_rtx_REG(TYPE_MODE (VALTYPE), 0)
354 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 0)
356 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
358 #define CRX_STRUCT_VALUE_REGNUM 0
360 /*****************************************************************************/
361 /* GENERATING CODE FOR PROFILING - NOT IMPLEMENTED */
362 /*****************************************************************************/
364 #undef FUNCTION_PROFILER
365 #define FUNCTION_PROFILER(STREAM, LABELNO) \
367 sorry ("Profiler support for CRX"); \
370 /*****************************************************************************/
371 /* TRAMPOLINES FOR NESTED FUNCTIONS - NOT SUPPORTED */
372 /*****************************************************************************/
374 #define TRAMPOLINE_SIZE 32
376 #define INITIALIZE_TRAMPOLINE(addr, fnaddr, static_chain) \
378 sorry ("Trampoline support for CRX"); \
381 /*****************************************************************************/
382 /* ADDRESSING MODES */
383 /*****************************************************************************/
385 #define CONSTANT_ADDRESS_P(X) \
386 (GET_CODE (X) == LABEL_REF \
387 || GET_CODE (X) == SYMBOL_REF \
388 || GET_CODE (X) == CONST \
389 || GET_CODE (X) == CONST_INT)
391 #define MAX_REGS_PER_ADDRESS 2
393 #define HAVE_POST_INCREMENT 1
394 #define HAVE_POST_DECREMENT 1
395 #define HAVE_POST_MODIFY_DISP 1
396 #define HAVE_POST_MODIFY_REG 0
399 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
400 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
402 #define REG_OK_FOR_BASE_P(X) 1
403 #define REG_OK_FOR_INDEX_P(X) 1
404 #endif /* REG_OK_STRICT */
407 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
409 if (crx_legitimate_address_p (MODE, X, 1)) \
413 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
415 if (crx_legitimate_address_p (MODE, X, 0)) \
418 #endif /* REG_OK_STRICT */
420 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)
422 #define LEGITIMATE_CONSTANT_P(X) 1
424 /*****************************************************************************/
425 /* CONDITION CODE STATUS */
426 /*****************************************************************************/
428 /*****************************************************************************/
429 /* RELATIVE COSTS OF OPERATIONS */
430 /*****************************************************************************/
432 #define MEMORY_MOVE_COST(MODE, CLASS, IN) crx_memory_move_cost(MODE, CLASS, IN)
433 /* Moving to processor register flushes pipeline - thus asymmetric */
434 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((TO != GENERAL_REGS) ? 8 : 2)
435 /* Assume best case (branch predicted) */
436 #define BRANCH_COST(speed_p, predictable_p) 2
438 #define SLOW_BYTE_ACCESS 1
440 /*****************************************************************************/
441 /* DIVIDING THE OUTPUT INTO SECTIONS */
442 /*****************************************************************************/
444 #define TEXT_SECTION_ASM_OP "\t.section\t.text"
446 #define DATA_SECTION_ASM_OP "\t.section\t.data"
448 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
450 /*****************************************************************************/
451 /* POSITION INDEPENDENT CODE */
452 /*****************************************************************************/
454 #define PIC_OFFSET_TABLE_REGNUM 12
456 #define LEGITIMATE_PIC_OPERAND_P(X) 1
458 /*****************************************************************************/
459 /* ASSEMBLER FORMAT */
460 /*****************************************************************************/
462 #define GLOBAL_ASM_OP "\t.globl\t"
464 #undef USER_LABEL_PREFIX
465 #define USER_LABEL_PREFIX "_"
467 #undef ASM_OUTPUT_LABELREF
468 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
469 asm_fprintf (STREAM, "%U%s", (*targetm.strip_name_encoding) (NAME));
472 #define ASM_APP_ON "#APP\n"
475 #define ASM_APP_OFF "#NO_APP\n"
477 /*****************************************************************************/
478 /* INSTRUCTION OUTPUT */
479 /*****************************************************************************/
481 #define REGISTER_NAMES \
483 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
484 "r8", "r9", "r10", "r11", "r12", "r13", "ra", "sp", \
488 #define PRINT_OPERAND(STREAM, X, CODE) \
489 crx_print_operand(STREAM, X, CODE)
491 #define PRINT_OPERAND_ADDRESS(STREAM, ADDR) \
492 crx_print_operand_address(STREAM, ADDR)
494 /*****************************************************************************/
495 /* OUTPUT OF DISPATCH TABLES */
496 /*****************************************************************************/
498 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
499 asm_fprintf ((STREAM), "\t.long\t.L%d\n", (VALUE))
501 /*****************************************************************************/
502 /* ALIGNMENT IN ASSEMBLER FILE */
503 /*****************************************************************************/
505 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \
506 asm_fprintf ((STREAM), "\t.align\t%d\n", 1 << (POWER))
508 /*****************************************************************************/
509 /* MISCELLANEOUS PARAMETERS */
510 /*****************************************************************************/
512 #define CASE_VECTOR_MODE Pmode
516 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
518 #define STORE_FLAG_VALUE 1
522 #define FUNCTION_MODE QImode
524 /*****************************************************************************/
525 /* EXTERNAL DECLARATIONS FOR VARIABLES DEFINED IN CRX.C */
526 /*****************************************************************************/
528 extern rtx crx_compare_op0; /* operand 0 for comparisons */
529 extern rtx crx_compare_op1; /* operand 1 for comparisons */
531 #endif /* ! GCC_CRX_H */