1 /* score.h for Sunplus S+CORE processor
2 Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
3 Contributed by Sunnorth.
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/>. */
21 #include "score-conv.h"
23 /* Controlling the Compilation Driver. */
24 #undef SWITCH_TAKES_ARG
25 #define SWITCH_TAKES_ARG(CHAR) \
26 (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G')
29 #define CPP_SPEC "%{mscore3:-D__score3__} %{G*}"
32 #define CC1_SPEC "%{!mel:-meb} %{mel:-mel } \
33 %{!mscore*:-mscore7} \
35 %{mscore3d:-mscore3d} \
37 %{mscore7d:-mscore7d} \
41 #define ASM_SPEC "%{!mel:-EB} %{mel:-EL} \
42 %{!mscore*:-march=score7} \
43 %{mscore7:-march=score7} \
44 %{mscore7d:-march=score7} \
45 %{mscore3:-march=score3} \
46 %{mscore3d:-march=score3} \
47 %{march=score5:-march=score7} \
48 %{march=score5u:-march=score7} \
49 %{march=score7:-march=score7} \
50 %{march=score7d:-march=score7} \
51 %{march=score3:-march=score3} \
52 %{march=score3d:-march=score3} \
56 #define LINK_SPEC "%{!mel:-EB} %{mel:-EL} \
57 %{!mscore*:-mscore7_elf} \
58 %{mscore7:-mscore7_elf} \
59 %{mscore7d:-mscore7_elf} \
60 %{mscore3:-mscore3_elf} \
61 %{mscore3d:-mscore3_elf} \
62 %{march=score5:-mscore7_elf} \
63 %{march=score5u:-mscore7_elf} \
64 %{march=score7:-mscore7_elf} \
65 %{march=score7d:-mscore7_elf} \
66 %{march=score3:-mscore3_elf} \
67 %{march=score3d:-mscore3_elf} \
70 /* Run-time Target Specification. */
71 #define TARGET_CPU_CPP_BUILTINS() \
73 builtin_define ("SUNPLUS"); \
74 builtin_define ("__SCORE__"); \
75 builtin_define ("__score__"); \
76 if (TARGET_LITTLE_ENDIAN) \
77 builtin_define ("__scorele__"); \
79 builtin_define ("__scorebe__"); \
81 builtin_define ("__score5__"); \
83 builtin_define ("__score5u__"); \
85 builtin_define ("__score7__"); \
87 builtin_define ("__score7d__"); \
89 builtin_define ("__score3__"); \
91 builtin_define ("__score3d__"); \
94 #define TARGET_DEFAULT 0
96 #define SCORE_GCC_VERSION "1.6"
98 #define TARGET_VERSION \
99 fprintf (stderr, "Sunplus S+core rev=%s", SCORE_GCC_VERSION);
101 /* Target machine storage layout. */
102 #define BITS_BIG_ENDIAN 0
103 #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
104 #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
106 /* Width of a word, in units (bytes). */
107 #define UNITS_PER_WORD 4
109 /* Define this macro if it is advisable to hold scalars in registers
110 in a wider mode than that declared by the program. In such cases,
111 the value is constrained to be within the bounds of the declared
112 type, but kept valid in the wider mode. The signedness of the
113 extension may differ from that of the type. */
114 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
115 if (GET_MODE_CLASS (MODE) == MODE_INT \
116 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
119 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
120 #define PARM_BOUNDARY BITS_PER_WORD
121 #define STACK_BOUNDARY BITS_PER_WORD
123 /* Allocation boundary (in *bits*) for the code of a function. */
124 #define FUNCTION_BOUNDARY BITS_PER_WORD
126 /* There is no point aligning anything to a rounder boundary than this. */
127 #define BIGGEST_ALIGNMENT LONG_DOUBLE_TYPE_SIZE
129 /* If defined, a C expression to compute the alignment for a static
130 variable. TYPE is the data type, and ALIGN is the alignment that
131 the object would ordinarily have. The value of this macro is used
132 instead of that alignment to align the object.
134 If this macro is not defined, then ALIGN is used.
136 One use of this macro is to increase alignment of medium-size
137 data to make it all fit in fewer cache lines. Another is to
138 cause character arrays to be word-aligned so that `strcpy' calls
139 that copy constants to character arrays can be done inline. */
140 #define DATA_ALIGNMENT(TYPE, ALIGN) \
141 ((((ALIGN) < BITS_PER_WORD) \
142 && (TREE_CODE (TYPE) == ARRAY_TYPE \
143 || TREE_CODE (TYPE) == UNION_TYPE \
144 || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN))
146 /* If defined, a C expression to compute the alignment given to a
147 constant that is being placed in memory. EXP is the constant
148 and ALIGN is the alignment that the object would ordinarily have.
149 The value of this macro is used instead of that alignment to align
152 If this macro is not defined, then ALIGN is used.
154 The typical use of this macro is to increase alignment for string
155 constants to be word aligned so that `strcpy' calls that copy
156 constants can be done inline. */
157 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
158 ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
159 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
161 /* If defined, a C expression to compute the alignment for a local
162 variable. TYPE is the data type, and ALIGN is the alignment that
163 the object would ordinarily have. The value of this macro is used
164 instead of that alignment to align the object.
166 If this macro is not defined, then ALIGN is used.
168 One use of this macro is to increase alignment of medium-size
169 data to make it all fit in fewer cache lines. */
170 #define LOCAL_ALIGNMENT(TYPE, ALIGN) \
171 ((TREE_CODE (TYPE) == ARRAY_TYPE \
172 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
173 && (ALIGN) < BITS_PER_WORD) ? BITS_PER_WORD : (ALIGN))
175 /* Alignment of field after `int : 0' in a structure. */
176 #define EMPTY_FIELD_BOUNDARY 32
178 /* All accesses must be aligned. */
179 #define STRICT_ALIGNMENT 1
181 /* Score requires that structure alignment is affected by bitfields. */
182 #define PCC_BITFIELD_TYPE_MATTERS 1
184 /* long double is not a fixed mode, but the idea is that, if we
185 support long double, we also want a 128-bit integer type. */
186 #define MAX_FIXED_MODE_SIZE LONG_DOUBLE_TYPE_SIZE
188 /* Layout of Data Type. */
189 /* Set the sizes of the core types. */
190 #define INT_TYPE_SIZE 32
191 #define SHORT_TYPE_SIZE 16
192 #define LONG_TYPE_SIZE 32
193 #define LONG_LONG_TYPE_SIZE 64
194 #define CHAR_TYPE_SIZE 8
195 #define FLOAT_TYPE_SIZE 32
196 #define DOUBLE_TYPE_SIZE 64
197 #define LONG_DOUBLE_TYPE_SIZE 64
199 /* Define this as 1 if `char' should by default be signed; else as 0. */
200 #undef DEFAULT_SIGNED_CHAR
201 #define DEFAULT_SIGNED_CHAR 1
203 /* Default definitions for size_t and ptrdiff_t. */
204 #define SIZE_TYPE "unsigned int"
206 #define UINTPTR_TYPE "long unsigned int"
211 - 32 integer registers
212 - 16 control registers (cond)
213 - 16 special registers (ceh/cel/cnt/lcr/scr/arg/fp)
214 - 32 coprocessors 1 registers
215 - 32 coprocessors 2 registers
216 - 32 coprocessors 3 registers. */
217 #define FIRST_PSEUDO_REGISTER 160
219 /* By default, fix the kernel registers (r30 and r31), the global
220 pointer (r28) and the stack pointer (r0). This can change
221 depending on the command-line options.
223 Regarding coprocessor registers: without evidence to the contrary,
224 it's best to assume that each coprocessor register has a unique
225 use. This can be overridden, in, e.g., TARGET_OPTION_OVERRIDE or
226 CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
227 for a particular target. */
229 /* Control Registers, use mfcr/mtcr insn
247 Custom Engine Register, use mfce/mtce
251 Special-Purpose Register, use mfsr/mtsr
256 53 ARG_POINTER_REGNUM
257 54 FRAME_POINTER_REGNUM
258 but Control register have 32 registers, cr16-cr31. */
259 #define FIXED_REGISTERS \
261 /* General Purpose Registers */ \
262 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
263 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, \
264 /* Control Registers */ \
265 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
266 /* CEH/ CEL/ CNT/ LCR/ SCR / ARG_POINTER_REGNUM/ FRAME_POINTER_REGNUM */\
267 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
268 /* CP 1 Registers */ \
269 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
270 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
271 /* CP 2 Registers */ \
272 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
273 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
274 /* CP 3 Registers */ \
275 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
276 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
279 #define CALL_USED_REGISTERS \
281 /* General purpose register */ \
282 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, \
283 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
284 /* Control Registers */ \
285 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
286 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
287 /* CP 1 Registers */ \
288 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
289 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
290 /* CP 2 Registers */ \
291 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
292 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
293 /* CP 3 Registers */ \
294 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
295 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
298 #define REG_ALLOC_ORDER \
299 { 0, 1, 6, 7, 8, 9, 10, 11, 4, 5, 22, 23, 24, 25, 26, 27, \
300 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 28, 29, 30, 31, 2, 3, \
301 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \
302 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \
303 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \
304 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, \
305 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111, \
306 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, \
307 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, \
308 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159 }
310 /* Macro to conditionally modify fixed_regs/call_used_regs. */
311 #define PIC_OFFSET_TABLE_REGNUM 29
313 #define CONDITIONAL_REGISTER_USAGE \
316 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = \
317 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 0; \
320 #define HARD_REGNO_NREGS(REGNO, MODE) \
321 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
323 /* Return true if REGNO is suitable for holding a quantity of type MODE. */
324 #define HARD_REGNO_MODE_OK(REGNO, MODE) score_hard_regno_mode_ok (REGNO, MODE)
326 /* Value is 1 if it is a good idea to tie two pseudo registers
327 when one has mode MODE1 and one has mode MODE2.
328 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
329 for any hard reg, then this must be 0 for correct output. */
330 #define MODES_TIEABLE_P(MODE1, MODE2) \
331 ((GET_MODE_CLASS (MODE1) == MODE_FLOAT \
332 || GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \
333 == (GET_MODE_CLASS (MODE2) == MODE_FLOAT \
334 || GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT))
336 /* Register Classes. */
337 /* Define the classes of registers for register constraints in the
338 machine description. Also define ranges of constants. */
342 G16_REGS, /* r0 ~ r15 */
343 G32_REGS, /* r0 ~ r31 */
344 T32_REGS, /* r8 ~ r11 | r22 ~ r27 */
348 CE_REGS, /* hi + lo */
353 SP_REGS, /* cnt + lcb + scb */
355 CR_REGS, /* cr0 - cr15 */
360 CPA_REGS, /* cp1 + cp2 + cp3 */
366 #define N_REG_CLASSES ((int) LIM_REG_CLASSES)
368 #define GENERAL_REGS G32_REGS
370 /* Give names of register classes as strings for dump file. */
371 #define REG_CLASS_NAMES \
397 /* Define which registers fit in which classes. */
398 #define REG_CLASS_CONTENTS \
400 /* NO_REGS/G16/G32/T32 */ \
401 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
402 { 0x0000ffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
403 { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
404 { 0x0fc00f00, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
406 { 0x00000000, 0x00010000, 0x00000000, 0x00000000, 0x00000000}, \
407 { 0x00000000, 0x00020000, 0x00000000, 0x00000000, 0x00000000}, \
408 { 0x00000000, 0x00030000, 0x00000000, 0x00000000, 0x00000000}, \
409 /* CN/LC/SC/SP/CR */ \
410 { 0x00000000, 0x00040000, 0x00000000, 0x00000000, 0x00000000}, \
411 { 0x00000000, 0x00080000, 0x00000000, 0x00000000, 0x00000000}, \
412 { 0x00000000, 0x00100000, 0x00000000, 0x00000000, 0x00000000}, \
413 { 0x00000000, 0x001c0000, 0x00000000, 0x00000000, 0x00000000}, \
414 { 0x00000000, 0x0000ffff, 0x00000000, 0x00000000, 0x00000000}, \
415 /* CP1/CP2/CP3/CPA */ \
416 { 0x00000000, 0x00000000, 0xffffffff, 0x00000000, 0x00000000}, \
417 { 0x00000000, 0x00000000, 0x00000000, 0xffffffff, 0x00000000}, \
418 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffffffff}, \
419 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0xffffffff}, \
421 { 0xffffffff, 0x001fffff, 0xffffffff, 0xffffffff, 0xffffffff}, \
424 /* A C expression whose value is a register class containing hard
425 register REGNO. In general there is more that one such class;
426 choose a class which is "minimal", meaning that no smaller class
427 also contains the register. */
428 #define REGNO_REG_CLASS(REGNO) score_reg_class (REGNO)
430 /* The following macro defines cover classes for Integrated Register
431 Allocator. Cover classes is a set of non-intersected register
432 classes covering all hard registers used for register allocation
433 purpose. Any move between two registers of a cover class should be
434 cheaper than load or store of the registers. The macro value is
435 array of register classes with LIM_REG_CLASSES used as the end
437 #define IRA_COVER_CLASSES \
439 G32_REGS, CE_REGS, SP_REGS, LIM_REG_CLASSES \
442 /* A macro whose definition is the name of the class to which a
443 valid base register must belong. A base register is one used in
444 an address which is the register value plus a displacement. */
445 #define BASE_REG_CLASS G16_REGS
447 /* The class value for index registers. */
448 #define INDEX_REG_CLASS NO_REGS
450 extern enum reg_class score_char_to_class[256];
451 #define REG_CLASS_FROM_LETTER(C) score_char_to_class[(unsigned char) (C)]
453 /* Addressing modes, and classification of registers for them. */
454 #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \
455 score_regno_mode_ok_for_base_p (REGNO, 1)
457 #define REGNO_OK_FOR_INDEX_P(NUM) 0
459 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
460 score_preferred_reload_class (X, CLASS)
462 /* If we need to load shorts byte-at-a-time, then we need a scratch. */
463 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
464 score_secondary_reload_class (CLASS, MODE, X)
466 /* Return the register class of a scratch register needed to copy IN into
467 or out of a register in CLASS in MODE. If it can be done directly,
468 NO_REGS is returned. */
469 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
470 score_secondary_reload_class (CLASS, MODE, X)
472 /* Return the maximum number of consecutive registers
473 needed to represent mode MODE in a register of class CLASS. */
474 #define CLASS_MAX_NREGS(CLASS, MODE) \
475 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
477 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
478 (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \
479 ? reg_classes_intersect_p (HI_REG, (CLASS)) : 0)
481 /* The letters I, J, K, L, M, N, O, and P in a register constraint
482 string can be used to stand for particular ranges of immediate
483 operands. This macro defines what the ranges are. C is the
484 letter, and VALUE is a constant value. Return 1 if VALUE is
485 in the range specified by C. */
486 #define CONST_OK_FOR_LETTER_P(VALUE, C) score_const_ok_for_letter_p (VALUE, C)
488 /* Similar, but for floating constants, and defining letters G and H.
489 Here VALUE is the CONST_DOUBLE rtx itself. */
491 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
492 ((C) == 'G' && (VALUE) == CONST0_RTX (GET_MODE (VALUE)))
494 /* Letters in the range `Q' through `U' may be defined in a
495 machine-dependent fashion to stand for arbitrary operand types.
496 The machine description macro `EXTRA_CONSTRAINT' is passed the
497 operand as its first argument and the constraint letter as its
499 #define EXTRA_CONSTRAINT(VALUE, C) score_extra_constraint (VALUE, C)
501 /* Basic Stack Layout. */
502 /* Stack layout; function entry, exit and calling. */
503 #define STACK_GROWS_DOWNWARD
505 #define STACK_PUSH_CODE PRE_DEC
506 #define STACK_POP_CODE POST_INC
508 /* The offset of the first local variable from the beginning of the frame.
509 See compute_frame_size for details about the frame layout. */
510 #define STARTING_FRAME_OFFSET crtl->outgoing_args_size
512 /* The argument pointer always points to the first argument. */
513 #define FIRST_PARM_OFFSET(FUNDECL) 0
515 /* A C expression whose value is RTL representing the value of the return
516 address for the frame COUNT steps up from the current frame. */
517 #define RETURN_ADDR_RTX(count, frame) score_return_addr (count, frame)
519 /* Pick up the return address upon entry to a procedure. */
520 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, RA_REGNUM)
522 /* Exception handling Support. */
523 /* Use r0 to r3 to pass exception handling information. */
524 #define EH_RETURN_DATA_REGNO(N) \
525 ((N) < 4 ? (N) + ARG_REG_FIRST : INVALID_REGNUM)
527 /* The register that holds the return address in exception handlers. */
528 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_REGNUM)
530 /* Registers That Address the Stack Frame. */
531 /* Register to use for pushing function arguments. */
532 #define STACK_POINTER_REGNUM SP_REGNUM
534 /* These two registers don't really exist: they get eliminated to either
535 the stack or hard frame pointer. */
536 #define FRAME_POINTER_REGNUM 53
538 /* we use r2 as the frame pointer. */
539 #define HARD_FRAME_POINTER_REGNUM FP_REGNUM
541 #define ARG_POINTER_REGNUM 54
543 /* Register in which static-chain is passed to a function. */
544 #define STATIC_CHAIN_REGNUM 23
546 /* Elimination Frame Pointer and Arg Pointer */
548 #define ELIMINABLE_REGS \
549 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
550 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
551 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
552 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}}
554 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
555 (OFFSET) = score_initial_elimination_offset ((FROM), (TO))
557 /* Passing Function Arguments on the Stack. */
558 /* Allocate stack space for arguments at the beginning of each function. */
559 #define ACCUMULATE_OUTGOING_ARGS 1
561 /* reserve stack space for all argument registers. */
562 #define REG_PARM_STACK_SPACE(FNDECL) UNITS_PER_WORD
564 /* Define this if it is the responsibility of the caller to
565 allocate the area reserved for arguments passed in registers.
566 If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect
567 of this macro is to determine whether the space is included in
568 `crtl->outgoing_args_size'. */
569 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1
571 /* Passing Arguments in Registers */
572 /* A C type for declaring a variable that is used as the first argument of
573 `FUNCTION_ARG' and other related values. For some target machines, the
574 type `int' suffices and can hold the number of bytes of argument so far. */
575 typedef struct score_args
577 unsigned int arg_number; /* how many arguments have been seen */
578 unsigned int num_gprs; /* number of gprs in use */
579 unsigned int stack_words; /* number of words in stack */
582 #define CUMULATIVE_ARGS score_args_t
584 /* Initialize a variable CUM of type CUMULATIVE_ARGS
585 for a call to a function whose data type is FNTYPE.
586 For a library call, FNTYPE is 0. */
587 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, n_named_args) \
588 score_init_cumulative_args (&CUM, FNTYPE, LIBNAME)
590 /* 1 if N is a possible register number for function argument passing.
591 We have no FP argument registers when soft-float. When FP registers
592 are 32 bits, we can't directly reference the odd numbered ones. */
593 #define FUNCTION_ARG_REGNO_P(REGNO) \
594 REG_CONTAIN (REGNO, ARG_REG_FIRST, ARG_REG_NUM)
596 /* How Scalar Function Values Are Returned. */
597 #define FUNCTION_VALUE(VALTYPE, FUNC) \
598 score_function_value ((VALTYPE), (FUNC), VOIDmode)
600 #define LIBCALL_VALUE(MODE) score_function_value (NULL_TREE, NULL, (MODE))
602 /* 1 if N is a possible register number for a function value. */
603 #define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == (ARG_REG_FIRST))
605 #define PIC_FUNCTION_ADDR_REGNUM (GP_REG_FIRST + 25)
607 /* How Large Values Are Returned. */
608 #define STRUCT_VALUE 0
610 /* Function Entry and Exit */
611 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
612 the stack pointer does not matter. The value is tested only in
613 functions that have frame pointers.
614 No definition is equivalent to always zero. */
615 #define EXIT_IGNORE_STACK 1
617 /* Generating Code for Profiling */
618 /* Output assembler code to FILE to increment profiler label # LABELNO
619 for profiling a function entry. */
620 #define FUNCTION_PROFILER(FILE, LABELNO) \
624 fprintf (FILE, " .set r1 \n"); \
625 fprintf (FILE, " mv r%d,r%d \n", AT_REGNUM, RA_REGNUM); \
626 fprintf (FILE, " subi r%d, %d \n", STACK_POINTER_REGNUM, 8); \
627 fprintf (FILE, " jl _mcount \n"); \
628 fprintf (FILE, " .set nor1 \n"); \
630 else if (TARGET_SCORE3) \
632 fprintf (FILE, " .set r1 \n"); \
633 fprintf (FILE, " mv! r%d,r%d \n", AT_REGNUM, RA_REGNUM); \
634 fprintf (FILE, " addi! r%d, %d \n", STACK_POINTER_REGNUM, -8);\
635 fprintf (FILE, " jl _mcount \n"); \
636 fprintf (FILE, " .set nor1 \n"); \
640 /* Trampolines for Nested Functions. */
641 #define TRAMPOLINE_INSNS 6
643 /* A C expression for the size in bytes of the trampoline, as an integer. */
644 #define TRAMPOLINE_SIZE (24 + GET_MODE_SIZE (ptr_mode) * 2)
646 #define HAVE_PRE_INCREMENT 1
647 #define HAVE_PRE_DECREMENT 1
648 #define HAVE_POST_INCREMENT 1
649 #define HAVE_POST_DECREMENT 1
650 #define HAVE_PRE_MODIFY_DISP 1
651 #define HAVE_POST_MODIFY_DISP 1
652 #define HAVE_PRE_MODIFY_REG 0
653 #define HAVE_POST_MODIFY_REG 0
655 /* Maximum number of registers that can appear in a valid memory address. */
656 #define MAX_REGS_PER_ADDRESS 1
658 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
659 and check its validity for a certain class.
660 We have two alternate definitions for each of them.
661 The usual definition accepts all pseudo regs; the other rejects them all.
662 The symbol REG_OK_STRICT causes the latter definition to be used.
664 Most source files want to accept pseudo regs in the hope that
665 they will get allocated to the class that the insn wants them to be in.
666 Some source files that are used after register allocation
667 need to be strict. */
668 #ifndef REG_OK_STRICT
669 #define REG_MODE_OK_FOR_BASE_P(X, MODE) \
670 score_regno_mode_ok_for_base_p (REGNO (X), 0)
672 #define REG_MODE_OK_FOR_BASE_P(X, MODE) \
673 score_regno_mode_ok_for_base_p (REGNO (X), 1)
676 #define REG_OK_FOR_INDEX_P(X) 0
678 #define LEGITIMATE_CONSTANT_P(X) 1
680 /* Condition Code Status. */
681 #define SELECT_CC_MODE(OP, X, Y) score_select_cc_mode (OP, X, Y)
683 /* Return nonzero if SELECT_CC_MODE will never return MODE for a
684 floating point inequality comparison. */
685 #define REVERSIBLE_CC_MODE(MODE) 1
687 /* Describing Relative Costs of Operations */
688 /* Compute extra cost of moving data between one register class and another. */
689 #define REGISTER_MOVE_COST(MODE, FROM, TO) \
690 score_register_move_cost (MODE, FROM, TO)
692 /* Moves to and from memory are quite expensive */
693 #define MEMORY_MOVE_COST(MODE, CLASS, TO_P) \
694 (4 + memory_move_secondary_cost ((MODE), (CLASS), (TO_P)))
696 /* Try to generate sequences that don't involve branches. */
697 #define BRANCH_COST(speed_p, predictable_p) 2
699 /* Nonzero if access to memory by bytes is slow and undesirable. */
700 #define SLOW_BYTE_ACCESS 1
702 /* Define this macro if it is as good or better to call a constant
703 function address than to call an address kept in a register. */
704 #define NO_FUNCTION_CSE 1
706 /* Dividing the Output into Sections (Texts, Data, ...). */
707 /* Define the strings to put out for each section in the object file. */
708 #define TEXT_SECTION_ASM_OP "\t.text"
709 #define DATA_SECTION_ASM_OP "\t.data"
710 #define SDATA_SECTION_ASM_OP "\t.sdata"
712 #undef READONLY_DATA_SECTION_ASM_OP
713 #define READONLY_DATA_SECTION_ASM_OP "\t.rdata"
715 /* The Overall Framework of an Assembler File */
716 /* How to start an assembler comment.
717 The leading space is important. */
718 #define ASM_COMMENT_START "#"
720 /* Output to assembler file text saying following lines
721 may contain character constants, extra white space, comments, etc. */
722 #define ASM_APP_ON "#APP\n\t.set volatile\n"
724 /* Output to assembler file text saying following lines
725 no longer contain unusual constructs. */
726 #define ASM_APP_OFF "#NO_APP\n\t.set optimize\n"
728 /* Output of Uninitialized Variables. */
729 /* This says how to define a global common symbol. */
730 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGN) \
732 fputs ("\n\t.comm\t", STREAM); \
733 assemble_name (STREAM, NAME); \
734 fprintf (STREAM, " , " HOST_WIDE_INT_PRINT_UNSIGNED ", %u\n", \
735 SIZE, ALIGN / BITS_PER_UNIT); \
738 /* This says how to define a local common symbol (i.e., not visible to
740 #undef ASM_OUTPUT_ALIGNED_LOCAL
741 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
743 fputs ("\n\t.lcomm\t", STREAM); \
744 assemble_name (STREAM, NAME); \
745 fprintf (STREAM, " , " HOST_WIDE_INT_PRINT_UNSIGNED ", %u\n", \
746 SIZE, ALIGN / BITS_PER_UNIT); \
749 /* Globalizing directive for a label. */
750 #define GLOBAL_ASM_OP "\t.globl\t"
752 /* Output and Generation of Labels */
753 /* This is how to declare a function name. The actual work of
754 emitting the label is moved to function_prologue, so that we can
755 get the line number correctly emitted before the .ent directive,
756 and after any .file directives. Define as empty so that the function
757 is not declared before the .ent directive elsewhere. */
758 #undef ASM_DECLARE_FUNCTION_NAME
759 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)
761 #undef ASM_DECLARE_OBJECT_NAME
762 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
764 assemble_name (STREAM, NAME); \
765 fprintf (STREAM, ":\n"); \
768 /* This says how to output an external. It would be possible not to
769 output anything and let undefined symbol become external. However
770 the assembler uses length information on externals to allocate in
771 data/sdata bss/sbss, thereby saving exec time. */
772 #undef ASM_OUTPUT_EXTERNAL
773 #define ASM_OUTPUT_EXTERNAL(STREAM, DECL, NAME) \
774 score_output_external (STREAM, DECL, NAME)
776 /* This handles the magic '..CURRENT_FUNCTION' symbol, which means
777 'the start of the function that this code is output in'. */
778 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
779 fprintf ((STREAM), "%s", (NAME))
781 /* Local compiler-generated symbols must have a prefix that the assembler
783 #define LOCAL_LABEL_PREFIX (TARGET_SCORE7 ? "." : "$")
785 #undef ASM_GENERATE_INTERNAL_LABEL
786 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
787 sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long) (NUM))
789 /* Output of Assembler Instructions. */
790 #define REGISTER_NAMES \
791 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
792 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
793 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
794 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
796 "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \
797 "cr8", "cr9", "cr10", "cr11", "cr12", "cr13", "cr14", "cr15", \
799 "ceh", "cel", "sr0", "sr1", "sr2", "_arg", "_frame", "", \
800 "cr24", "cr25", "cr26", "cr27", "cr28", "cr29", "cr30", "cr31", \
802 "c1r0", "c1r1", "c1r2", "c1r3", "c1r4", "c1r5", "c1r6", "c1r7", \
803 "c1r8", "c1r9", "c1r10", "c1r11", "c1r12", "c1r13", "c1r14", "c1r15", \
804 "c1r16", "c1r17", "c1r18", "c1r19", "c1r20", "c1r21", "c1r22", "c1r23", \
805 "c1r24", "c1r25", "c1r26", "c1r27", "c1r28", "c1r29", "c1r30", "c1r31", \
807 "c2r0", "c2r1", "c2r2", "c2r3", "c2r4", "c2r5", "c2r6", "c2r7", \
808 "c2r8", "c2r9", "c2r10", "c2r11", "c2r12", "c2r13", "c2r14", "c2r15", \
809 "c2r16", "c2r17", "c2r18", "c2r19", "c2r20", "c2r21", "c2r22", "c2r23", \
810 "c2r24", "c2r25", "c2r26", "c2r27", "c2r28", "c2r29", "c2r30", "c2r31", \
812 "c3r0", "c3r1", "c3r2", "c3r3", "c3r4", "c3r5", "c3r6", "c3r7", \
813 "c3r8", "c3r9", "c3r10", "c3r11", "c3r12", "c3r13", "c3r14", "c3r15", \
814 "c3r16", "c3r17", "c3r18", "c3r19", "c3r20", "c3r21", "c3r22", "c3r23", \
815 "c3r24", "c3r25", "c3r26", "c3r27", "c3r28", "c3r29", "c3r30", "c3r31", \
818 /* Print operand X (an rtx) in assembler syntax to file FILE. */
819 #define PRINT_OPERAND(STREAM, X, CODE) score_print_operand (STREAM, X, CODE)
821 /* A C expression which evaluates to true if CODE is a valid
822 punctuation character for use in the `PRINT_OPERAND' macro. */
823 #define PRINT_OPERAND_PUNCT_VALID_P(C) ((C) == '[' || (C) == ']')
825 /* Print a memory address as an operand to reference that memory location. */
826 #define PRINT_OPERAND_ADDRESS(STREAM, X) \
827 score_print_operand_address (STREAM, X)
829 /* By default on the S+core, external symbols do not have an underscore
831 #define USER_LABEL_PREFIX ""
833 /* This is how to output an insn to push a register on the stack. */
834 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
837 fprintf (STREAM, "\tpush! %s,[%s]\n", \
839 reg_names[STACK_POINTER_REGNUM]); \
840 else if (TARGET_SCORE3) \
841 fprintf (STREAM, "\tpush!\t%s\n", \
845 /* This is how to output an insn to pop a register from the stack. */
846 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
849 fprintf (STREAM, "\tpop! %s,[%s]\n", \
851 reg_names[STACK_POINTER_REGNUM]); \
852 else if (TARGET_SCORE3) \
853 fprintf (STREAM, "\tpop!\t%s\n", \
857 /* Output of Dispatch Tables. */
858 /* This is how to output an element of a case-vector. We can make the
859 entries PC-relative in GP-relative when .gp(d)word is supported. */
860 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
864 fprintf (STREAM, "\t.gpword %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
866 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
867 else if (TARGET_SCORE3) \
869 switch (GET_MODE(BODY)) \
871 case QImode: /* TBB */ \
872 asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d_tbb)/2\n", \
875 case HImode: /* TBH */ \
876 asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d_tbb)/2\n", \
881 fprintf (STREAM, "\t.gpword %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
883 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
891 /* Jump table alignment is explicit in ASM_OUTPUT_CASE_LABEL. */
892 #define ADDR_VEC_ALIGN(JUMPTABLE) (GET_MODE (PATTERN (JUMPTABLE)) == SImode ? 2 \
893 : GET_MODE (PATTERN (JUMPTABLE)) == HImode ? 1 : 0)
895 /* This is how to output a label which precedes a jumptable. Since
896 Score3 instructions are 2 bytes, we may need explicit alignment here. */
897 #undef ASM_OUTPUT_CASE_LABEL
898 #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
900 if ((TARGET_SCORE7) && GET_MODE (PATTERN (JUMPTABLE)) == SImode) \
901 ASM_OUTPUT_ALIGN (FILE, 2); \
902 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); \
905 /* Specify the machine mode that this machine uses
906 for the index in the tablejump instruction. */
907 #define CASE_VECTOR_MODE SImode
909 #define CASE_VECTOR_PC_RELATIVE (TARGET_SCORE3)
911 #define CASE_VECTOR_SHORTEN_MODE(min, max, body) \
912 ((min < 0 || max >= 0x2000 || TARGET_SCORE7) ? SImode \
913 : (max >= 0x200) ? HImode \
916 /* This is how to output an element of a case-vector that is absolute. */
917 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
918 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE)
920 /* Assembler Commands for Exception Regions */
921 /* Since the S+core is encoded in the least-significant bit
922 of the address, mask it off return addresses for purposes of
923 finding exception handling regions. */
924 #define MASK_RETURN_ADDR constm1_rtx
926 /* Assembler Commands for Alignment */
927 /* This is how to output an assembler line to advance the location
928 counter by SIZE bytes. */
929 #undef ASM_OUTPUT_SKIP
930 #define ASM_OUTPUT_SKIP(STREAM, SIZE) \
931 fprintf (STREAM, "\t.space\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
933 /* This is how to output an assembler line
934 that says to advance the location counter
935 to a multiple of 2**LOG bytes. */
936 #define ASM_OUTPUT_ALIGN(STREAM, LOG) \
937 fprintf (STREAM, "\t.align\t%d\n", (LOG))
939 /* Macros Affecting All Debugging Formats. */
940 #ifndef PREFERRED_DEBUGGING_TYPE
941 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
944 /* Specific Options for DBX Output. */
945 #define DBX_DEBUGGING_INFO 1
947 /* By default, turn on GDB extensions. */
948 #define DEFAULT_GDB_EXTENSIONS 1
950 #define DBX_CONTIN_LENGTH 0
952 /* File Names in DBX Format. */
953 #define DWARF2_DEBUGGING_INFO 1
955 /* The DWARF 2 CFA column which tracks the return address. */
956 #define DWARF_FRAME_RETURN_COLUMN 3
958 /* Define if operations between registers always perform the operation
959 on the full register even if a narrower mode is specified. */
960 #define WORD_REGISTER_OPERATIONS
962 /* All references are zero extended. */
963 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
965 /* Define if loading short immediate values into registers sign extends. */
966 #define SHORT_IMMEDIATES_SIGN_EXTEND
968 /* Max number of bytes we can move from memory to memory
969 in one reasonably fast instruction. */
972 /* Define this to be nonzero if shift instructions ignore all but the low-order
974 #define SHIFT_COUNT_TRUNCATED 1
976 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
977 is done just by pretending it is already truncated. */
978 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
980 /* Specify the machine mode that pointers have.
981 After generation of rtl, the compiler makes no further distinction
982 between pointers and any other objects of this machine mode. */
985 /* Give call MEMs SImode since it is the "most permissive" mode
986 for 32-bit targets. */
987 #define FUNCTION_MODE Pmode
989 struct GTY ((chain_next ("%h.next"))) extern_list
991 struct extern_list *next; /* next external */
992 const char *name; /* name of the external */
993 int size; /* size in bytes */
996 extern GTY (()) struct extern_list *extern_head;