1 /* Copyright (C) 2006 Free Software Foundation, Inc.
3 This file is free software; you can redistribute it and/or modify it under
4 the terms of the GNU General Public License as published by the Free
5 Software Foundation; either version 2 of the License, or (at your option)
8 This file is distributed in the hope that it will be useful, but WITHOUT
9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 You should have received a copy of the GNU General Public License
14 along with this file; see the file COPYING. If not, write to the Free
15 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
20 #define TARGET_CPU_CPP_BUILTINS() spu_cpu_cpp_builtins(pfile)
22 #define TARGET_VERSION fprintf (stderr, " (spu %s)", __DATE__);
24 #define OVERRIDE_OPTIONS spu_override_options()
25 #define C_COMMON_OVERRIDE_OPTIONS spu_c_common_override_options()
27 extern int target_flags;
28 extern const char *spu_fixed_range_string;
30 /* Default target_flags if no switches specified. */
31 #ifndef TARGET_DEFAULT
32 #define TARGET_DEFAULT (MASK_ERROR_RELOC | MASK_SAFE_DMA | MASK_BRANCH_HINTS)
38 #define BITS_BIG_ENDIAN 1
40 #define BYTES_BIG_ENDIAN 1
42 #define WORDS_BIG_ENDIAN 1
44 #define BITS_PER_UNIT 8
46 /* GCC uses word_mode in many places, assuming that it is the fastest
47 integer mode. That is not the case for SPU though. We can't use
48 32 here because (of some reason I can't remember.) */
49 #define BITS_PER_WORD 128
51 #define UNITS_PER_WORD (BITS_PER_WORD/BITS_PER_UNIT)
53 /* We never actually change UNITS_PER_WORD, but defining this causes
54 libgcc to use some different sizes of types when compiling. */
55 #define MIN_UNITS_PER_WORD 4
57 #define POINTER_SIZE 32
59 #define PARM_BOUNDARY 128
61 #define STACK_BOUNDARY 128
63 /* We want it 8-byte aligned so we can properly use dual-issue
64 instructions, which can only happen on an 8-byte aligned address. */
65 #define FUNCTION_BOUNDARY 64
67 /* We would like to allow a larger alignment for data objects (for DMA)
68 but the aligned attribute is limited by BIGGEST_ALIGNMENT. We don't
69 define BIGGEST_ALIGNMENT as larger because it is used in other places
70 and would end up wasting space. (Is this still true?) */
71 #define BIGGEST_ALIGNMENT 128
73 #define MINIMUM_ATOMIC_ALIGNMENT 128
75 /* Make all static objects 16-byte aligned. This allows us to assume
76 they are also padded to 16-bytes, which means we can use a single
77 load or store instruction to access them. Do the same for objects
78 on the stack. (Except a bug (?) allows some stack objects to be
80 #define DATA_ALIGNMENT(TYPE,ALIGN) ((ALIGN) > 128 ? (ALIGN) : 128)
81 #define CONSTANT_ALIGNMENT(TYPE,ALIGN) ((ALIGN) > 128 ? (ALIGN) : 128)
82 #define LOCAL_ALIGNMENT(TYPE,ALIGN) ((ALIGN) > 128 ? (ALIGN) : 128)
84 #define EMPTY_FIELD_BOUNDARY 32
86 #define STRICT_ALIGNMENT 1
88 /* symbol_ref's of functions are not aligned to 16 byte boundary. */
89 #define ALIGNED_SYMBOL_REF_P(X) \
90 (GET_CODE (X) == SYMBOL_REF \
91 && (SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_ALIGN1) == 0 \
92 && (! SYMBOL_REF_FUNCTION_P (X) \
93 || align_functions >= 16))
95 #define PCC_BITFIELD_TYPE_MATTERS 1
97 #define MAX_FIXED_MODE_SIZE 128
99 #define STACK_SAVEAREA_MODE(save_level) SImode
101 #define STACK_SIZE_MODE SImode
103 /* #define TARGET_FLOAT_FORMAT SPU_FLOAT_FORMAT */
105 #ifndef MODE_HAS_NANS
106 #define MODE_HAS_NANS(MODE) \
107 (FLOAT_MODE_P (MODE) \
109 && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE)))
112 #ifndef MODE_HAS_INFINITIES
113 #define MODE_HAS_INFINITIES(MODE) \
114 (FLOAT_MODE_P (MODE) \
116 && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE)))
119 #ifndef MODE_HAS_SIGN_DEPENDENT_ROUNDING
120 #define MODE_HAS_SIGN_DEPENDENT_ROUNDING(MODE) \
121 (FLOAT_MODE_P (MODE) \
123 && !ROUND_TOWARDS_ZERO)
126 #define ROUND_TOWARDS_ZERO 1
128 /* This is certainly true. Should it be defined? (It wasn't before.) */
129 /* #define LARGEST_EXPONENT_IS_NORMAL(size) (size != 32) */
134 #define INT_TYPE_SIZE 32
136 #define LONG_TYPE_SIZE 32
138 #define LONG_LONG_TYPE_SIZE 64
140 #define FLOAT_TYPE_SIZE 32
142 #define DOUBLE_TYPE_SIZE 64
144 #define LONG_DOUBLE_TYPE_SIZE 64
146 #define DEFAULT_SIGNED_CHAR 0
149 /* Register Basics */
151 /* 128-130 are special registers that never appear in assembly code. */
152 #define FIRST_PSEUDO_REGISTER 132
154 #define FIXED_REGISTERS { \
155 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
156 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
157 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
159 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
160 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
161 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
162 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
166 #define CALL_USED_REGISTERS { \
167 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
168 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
169 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
170 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
171 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
172 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
173 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
174 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
178 #define CONDITIONAL_REGISTER_USAGE \
179 spu_conditional_register_usage()
182 /* Values in Registers */
184 #define HARD_REGNO_NREGS(REGNO, MODE) \
185 ((GET_MODE_BITSIZE(MODE)+MAX_FIXED_MODE_SIZE-1)/MAX_FIXED_MODE_SIZE)
187 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
189 #define MODES_TIEABLE_P(MODE1, MODE2) \
190 (GET_MODE_BITSIZE (MODE1) <= MAX_FIXED_MODE_SIZE \
191 && GET_MODE_BITSIZE (MODE2) <= MAX_FIXED_MODE_SIZE)
194 /* Register Classes */
203 #define N_REG_CLASSES (int) LIM_REG_CLASSES
205 #define REG_CLASS_NAMES \
211 #define REG_CLASS_CONTENTS { \
212 {0, 0, 0, 0, 0}, /* no regs */ \
213 {0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x3}, /* general regs */ \
214 {0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x3}} /* all regs */
216 #define REGNO_REG_CLASS(REGNO) (GENERAL_REGS)
218 #define BASE_REG_CLASS GENERAL_REGS
220 #define INDEX_REG_CLASS GENERAL_REGS
222 #define REGNO_OK_FOR_BASE_P(regno) \
223 ((regno) < FIRST_PSEUDO_REGISTER || (regno > LAST_VIRTUAL_REGISTER && reg_renumber[regno] >= 0))
225 #define REGNO_OK_FOR_INDEX_P(regno) \
226 ((regno) < FIRST_PSEUDO_REGISTER || (regno > LAST_VIRTUAL_REGISTER && reg_renumber[regno] >= 0))
228 #define INT_REG_OK_FOR_INDEX_P(X,STRICT) \
229 ((!(STRICT) || REGNO_OK_FOR_INDEX_P (REGNO (X))))
230 #define INT_REG_OK_FOR_BASE_P(X,STRICT) \
231 ((!(STRICT) || REGNO_OK_FOR_BASE_P (REGNO (X))))
233 #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
235 #define CLASS_MAX_NREGS(CLASS, MODE) \
236 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
238 /* GCC assumes that modes are in the lowpart of a register, which is
239 only true for SPU. */
240 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
241 ((GET_MODE_SIZE (FROM) > 4 || GET_MODE_SIZE (TO) > 4) \
242 && GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO))
244 #define REGISTER_TARGET_PRAGMAS() do { \
245 targetm.resolve_overloaded_builtin = spu_resolve_overloaded_builtin; \
251 #define STACK_GROWS_DOWNWARD
253 #define STARTING_FRAME_OFFSET (0)
255 #define STACK_POINTER_OFFSET 32
257 #define FIRST_PARM_OFFSET(FNDECL) (0)
259 #define DYNAMIC_CHAIN_ADDRESS(FP) plus_constant ((FP), -16)
261 #define RETURN_ADDR_RTX(COUNT,FP) (spu_return_addr (COUNT, FP))
263 /* Should this be defined? Would it simplify our implementation. */
264 /* #define RETURN_ADDR_IN_PREVIOUS_FRAME */
266 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG(Pmode, LINK_REGISTER_REGNUM)
271 /* We store the Available Stack Size in the second slot of the stack
272 register. We emit stack checking code during the prologue. */
273 #define STACK_CHECK_BUILTIN 1
276 /* Frame Registers, and other registers */
278 #define STACK_POINTER_REGNUM 1
280 /* Will be eliminated. */
281 #define FRAME_POINTER_REGNUM 128
283 /* This is not specified in any ABI, so could be set to anything. */
284 #define HARD_FRAME_POINTER_REGNUM 127
286 /* Will be eliminated. */
287 #define ARG_POINTER_REGNUM 129
289 #define STATIC_CHAIN_REGNUM 2
291 #define LINK_REGISTER_REGNUM 0
293 /* Used to keep track of instructions that have clobbered the hint
294 * buffer. Users can also specify it in inline asm. */
295 #define HBR_REGNUM 130
297 /* Used to keep track of enabling and disabling interrupts. */
298 #define INTR_REGNUM 131
300 #define MAX_REGISTER_ARGS 72
301 #define FIRST_ARG_REGNUM 3
302 #define LAST_ARG_REGNUM (FIRST_ARG_REGNUM + MAX_REGISTER_ARGS - 1)
304 #define MAX_REGISTER_RETURN 72
305 #define FIRST_RETURN_REGNUM 3
306 #define LAST_RETURN_REGNUM (FIRST_RETURN_REGNUM + MAX_REGISTER_RETURN - 1)
311 #define FRAME_POINTER_REQUIRED 0
313 #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) ((DEPTH) = 0)
315 #define ELIMINABLE_REGS \
316 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
317 {ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
318 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
319 {FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}}
321 #define CAN_ELIMINATE(FROM,TO) 1
323 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
324 ((OFFSET) = spu_initial_elimination_offset((FROM),(TO)))
327 /* Stack Arguments */
329 #define ACCUMULATE_OUTGOING_ARGS 1
331 #define REG_PARM_STACK_SPACE(FNDECL) 0
333 #define OUTGOING_REG_PARM_STACK_SPACE
335 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) (0)
338 /* Register Arguments */
340 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
341 (spu_function_arg((CUM),(MODE),(TYPE),(NAMED)))
343 #define CUMULATIVE_ARGS int
345 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,FNDECL,N_NAMED_ARGS) \
348 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
350 (TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST ? 1 \
351 : (MODE) == BLKmode ? ((int_size_in_bytes(TYPE)+15) / 16) \
352 : (MODE) == VOIDmode ? 1 \
353 : HARD_REGNO_NREGS(CUM,MODE))
355 #define FUNCTION_ARG_PADDING(MODE,TYPE) upward
357 #define PAD_VARARGS_DOWN 0
359 #define FUNCTION_ARG_REGNO_P(N) ((N) >= (FIRST_ARG_REGNUM) && (N) <= (LAST_ARG_REGNUM))
362 #define EXPAND_BUILTIN_VA_START(valist, nextarg) \
363 spu_va_start (valist, nextarg)
368 #define FUNCTION_VALUE(VALTYPE, FUNC) \
369 (spu_function_value((VALTYPE),(FUNC)))
371 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, FIRST_RETURN_REGNUM)
373 #define FUNCTION_VALUE_REGNO_P(N) ((N) >= (FIRST_RETURN_REGNUM) && (N) <= (LAST_RETURN_REGNUM))
376 /* Machine-specific symbol_ref flags. */
377 #define SYMBOL_FLAG_ALIGN1 (SYMBOL_FLAG_MACH_DEP << 0)
379 /* Aggregate Return */
381 #define DEFAULT_PCC_STRUCT_RETURN 0
386 #define EXIT_IGNORE_STACK 0
388 #define EPILOGUE_USES(REGNO) ((REGNO)==1 ? 1 : 0)
393 /* Nothing, for now. */
394 #define FUNCTION_PROFILER(FILE, LABELNO) \
395 fprintf (FILE, "\t\n")
400 #define TRAMPOLINE_SIZE (TARGET_LARGE_MEM ? 20 : 16)
402 #define TRAMPOLINE_ALIGNMENT 128
404 #define INITIALIZE_TRAMPOLINE(TRAMP,FNADDR,CXT) \
405 spu_initialize_trampoline(TRAMP,FNADDR,CXT)
408 /* Addressing Modes */
410 #define CONSTANT_ADDRESS_P(X) spu_constant_address_p(X)
412 #define MAX_REGS_PER_ADDRESS 2
415 # define REG_OK_STRICT_FLAG 1
417 # define REG_OK_STRICT_FLAG 0
420 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
421 { if (spu_legitimate_address (MODE, X, REG_OK_STRICT_FLAG)) \
425 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
426 { rtx result = spu_legitimize_address (X, OLDX, MODE); \
427 if (result != NULL_RTX) \
434 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
436 #define LEGITIMATE_CONSTANT_P(X) spu_legitimate_constant_p(X)
441 #define BRANCH_COST spu_branch_cost
443 #define SLOW_BYTE_ACCESS 0
445 #define MOVE_RATIO 32
447 #define NO_FUNCTION_CSE
452 #define TEXT_SECTION_ASM_OP ".text"
454 #define DATA_SECTION_ASM_OP ".data"
456 #define JUMP_TABLES_IN_TEXT_SECTION 1
460 #define PIC_OFFSET_TABLE_REGNUM 126
465 #define ASM_APP_ON ""
467 #define ASM_APP_OFF ""
469 #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \
470 do { fprintf (STREAM, "\t.file\t"); \
471 output_quoted_string (STREAM, NAME); \
472 fprintf (STREAM, "\n"); \
476 /* Uninitialized Data */
477 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
478 ( fputs (".comm ", (FILE)), \
479 assemble_name ((FILE), (NAME)), \
480 fprintf ((FILE), ",%d\n", (ROUNDED)))
482 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
483 ( fputs (".lcomm ", (FILE)), \
484 assemble_name ((FILE), (NAME)), \
485 fprintf ((FILE), ",%d\n", (ROUNDED)))
489 #define ASM_OUTPUT_LABEL(FILE,NAME) \
490 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
492 #define ASM_OUTPUT_LABELREF(FILE, NAME) \
493 asm_fprintf (FILE, "%U%s", default_strip_name_encoding (NAME))
495 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
496 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
497 sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
500 /* Instruction Output */
501 #define REGISTER_NAMES \
502 {"$lr", "$sp", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", \
503 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23", "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31", \
504 "$32", "$33", "$34", "$35", "$36", "$37", "$38", "$39", "$40", "$41", "$42", "$43", "$44", "$45", "$46", "$47", \
505 "$48", "$49", "$50", "$51", "$52", "$53", "$54", "$55", "$56", "$57", "$58", "$59", "$60", "$61", "$62", "$63", \
506 "$64", "$65", "$66", "$67", "$68", "$69", "$70", "$71", "$72", "$73", "$74", "$75", "$76", "$77", "$78", "$79", \
507 "$80", "$81", "$82", "$83", "$84", "$85", "$86", "$87", "$88", "$89", "$90", "$91", "$92", "$93", "$94", "$95", \
508 "$96", "$97", "$98", "$99", "$100", "$101", "$102", "$103", "$104", "$105", "$106", "$107", "$108", "$109", "$110", "$111", \
509 "$112", "$113", "$114", "$115", "$116", "$117", "$118", "$119", "$120", "$121", "$122", "$123", "$124", "$125", "$126", "$127", \
510 "$vfp", "$vap", "hbr", "intr" \
513 #define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE, X, CODE)
515 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
516 print_operand_address (FILE, ADDR)
518 #define LOCAL_LABEL_PREFIX "."
520 #define USER_LABEL_PREFIX ""
523 /* Dispatch Tables */
525 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
526 fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
528 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
529 fprintf (FILE, "\t.word .L%d\n", VALUE)
532 /* Alignment Output */
534 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
535 do { if (LOG!=0) fprintf (FILE, "\t.align\t%d\n", (LOG)); } while (0)
540 #define CASE_VECTOR_MODE SImode
544 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) ((INPREC) <= 32 && (OUTPREC) <= (INPREC))
546 #define STORE_FLAG_VALUE -1
550 #define FUNCTION_MODE QImode
552 #define NO_IMPLICIT_EXTERN_C 1
556 /* These are set by the cmp patterns and used while expanding
557 conditional branches. */
558 extern GTY(()) rtx spu_compare_op0;
559 extern GTY(()) rtx spu_compare_op1;