1 /* score.h for Sunplus S+CORE processor
2 Copyright (C) 2005 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 2, 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 COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
22 #include "score-conv.h"
23 #include "score-version.h"
25 /* Define the information needed to generate branch insns. This is
26 stored from the compare operation. */
27 extern GTY(()) rtx cmp_op0;
28 extern GTY(()) rtx cmp_op1;
30 /* Controlling the Compilation Driver. */
31 #undef SWITCH_TAKES_ARG
32 #define SWITCH_TAKES_ARG(CHAR) \
33 (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G')
35 /* CC1_SPEC is the set of arguments to pass to the compiler proper. */
37 #define CC1_SPEC "%{G*} %{!mel:-meb}"
41 "%{!mel:-EB} %{mel:-EL} %{mscore5u:-SCORE5U} %{mscore7:-SCORE7} %{G*}"
44 #define LINK_SPEC "%{!mel:-EB} %{mel:-EL} %{G*}"
46 /* Run-time Target Specification. */
47 #define TARGET_CPU_CPP_BUILTINS() \
49 builtin_define ("SUNPLUS"); \
50 builtin_define ("__SCORE__"); \
51 builtin_define ("__score__"); \
52 if (TARGET_LITTLE_ENDIAN) \
53 builtin_define ("__scorele__"); \
55 builtin_define ("__scorebe__"); \
57 builtin_define ("__score5u__"); \
59 builtin_define ("__score7__"); \
62 #define TARGET_DEFAULT MASK_SCORE7
64 #define TARGET_VERSION \
65 fprintf (stderr, "Sunplus S+CORE %s", SCORE_GCC_VERSION);
67 #define OVERRIDE_OPTIONS score_override_options ()
69 /* Show we can debug even without a frame pointer. */
70 #define CAN_DEBUG_WITHOUT_FP
72 /* Target machine storage layout. */
73 #define BITS_BIG_ENDIAN 0
74 #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
75 #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
77 /* Define this to set the endianness to use in libgcc2.c, which can
78 not depend on target_flags. */
79 #if defined(__scorele__)
80 #define LIBGCC2_WORDS_BIG_ENDIAN 0
82 #define LIBGCC2_WORDS_BIG_ENDIAN 1
85 /* Width of a word, in units (bytes). */
86 #define UNITS_PER_WORD 4
88 /* Define this macro if it is advisable to hold scalars in registers
89 in a wider mode than that declared by the program. In such cases,
90 the value is constrained to be within the bounds of the declared
91 type, but kept valid in the wider mode. The signedness of the
92 extension may differ from that of the type. */
93 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
94 if (GET_MODE_CLASS (MODE) == MODE_INT \
95 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
98 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
99 #define PARM_BOUNDARY BITS_PER_WORD
100 #define STACK_BOUNDARY BITS_PER_WORD
102 /* Allocation boundary (in *bits*) for the code of a function. */
103 #define FUNCTION_BOUNDARY BITS_PER_WORD
105 /* There is no point aligning anything to a rounder boundary than this. */
106 #define BIGGEST_ALIGNMENT LONG_DOUBLE_TYPE_SIZE
108 /* If defined, a C expression to compute the alignment for a static
109 variable. TYPE is the data type, and ALIGN is the alignment that
110 the object would ordinarily have. The value of this macro is used
111 instead of that alignment to align the object.
113 If this macro is not defined, then ALIGN is used.
115 One use of this macro is to increase alignment of medium-size
116 data to make it all fit in fewer cache lines. Another is to
117 cause character arrays to be word-aligned so that `strcpy' calls
118 that copy constants to character arrays can be done inline. */
119 #define DATA_ALIGNMENT(TYPE, ALIGN) \
120 ((((ALIGN) < BITS_PER_WORD) \
121 && (TREE_CODE (TYPE) == ARRAY_TYPE \
122 || TREE_CODE (TYPE) == UNION_TYPE \
123 || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN))
125 /* If defined, a C expression to compute the alignment given to a
126 constant that is being placed in memory. EXP is the constant
127 and ALIGN is the alignment that the object would ordinarily have.
128 The value of this macro is used instead of that alignment to align
131 If this macro is not defined, then ALIGN is used.
133 The typical use of this macro is to increase alignment for string
134 constants to be word aligned so that `strcpy' calls that copy
135 constants can be done inline. */
136 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
137 ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
138 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
140 /* If defined, a C expression to compute the alignment for a local
141 variable. TYPE is the data type, and ALIGN is the alignment that
142 the object would ordinarily have. The value of this macro is used
143 instead of that alignment to align the object.
145 If this macro is not defined, then ALIGN is used.
147 One use of this macro is to increase alignment of medium-size
148 data to make it all fit in fewer cache lines. */
149 #define LOCAL_ALIGNMENT(TYPE, ALIGN) \
150 ((TREE_CODE (TYPE) == ARRAY_TYPE \
151 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
152 && (ALIGN) < BITS_PER_WORD) ? BITS_PER_WORD : (ALIGN))
154 /* Alignment of field after `int : 0' in a structure. */
155 #define EMPTY_FIELD_BOUNDARY 32
157 /* All accesses must be aligned. */
158 #define STRICT_ALIGNMENT 1
160 /* Score requires that structure alignment is affected by bitfields. */
161 #define PCC_BITFIELD_TYPE_MATTERS 1
163 /* long double is not a fixed mode, but the idea is that, if we
164 support long double, we also want a 128-bit integer type. */
165 #define MAX_FIXED_MODE_SIZE LONG_DOUBLE_TYPE_SIZE
167 #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
169 /* Layout of Data Type. */
170 /* Set the sizes of the core types. */
171 #define INT_TYPE_SIZE 32
172 #define SHORT_TYPE_SIZE 16
173 #define LONG_TYPE_SIZE 32
174 #define LONG_LONG_TYPE_SIZE 64
175 #define CHAR_TYPE_SIZE 8
176 #define FLOAT_TYPE_SIZE 32
177 #define DOUBLE_TYPE_SIZE 64
178 #define LONG_DOUBLE_TYPE_SIZE 64
180 /* Define this as 1 if `char' should by default be signed; else as 0. */
181 #undef DEFAULT_SIGNED_CHAR
182 #define DEFAULT_SIGNED_CHAR 1
184 /* Default definitions for size_t and ptrdiff_t. */
185 #define SIZE_TYPE "unsigned int"
190 - 32 integer registers
191 - 16 control registers (cond)
192 - 16 special registers (ceh/cel/cnt/lcr/scr/arg/fp)
193 - 32 coprocessors 1 registers
194 - 32 coprocessors 2 registers
195 - 32 coprocessors 3 registers. */
196 #define FIRST_PSEUDO_REGISTER 160
198 /* By default, fix the kernel registers (r30 and r31), the global
199 pointer (r28) and the stack pointer (r0). This can change
200 depending on the command-line options.
202 Regarding coprocessor registers: without evidence to the contrary,
203 it's best to assume that each coprocessor register has a unique
204 use. This can be overridden, in, e.g., override_options() or
205 CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
206 for a particular target. */
208 /* Control Registers, use mfcr/mtcr insn
226 Custom Engine Register, use mfce/mtce
230 Special-Purpose Register, use mfsr/mtsr
235 53 ARG_POINTER_REGNUM
236 54 FRAME_POINTER_REGNUM
237 but Control register have 32 registers, cr16-cr31. */
238 #define FIXED_REGISTERS \
240 /* General Purpose Registers */ \
241 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
242 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, \
243 /* Control Registers */ \
244 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
245 /* CEH/ CEL/ CNT/ LCR/ SCR / ARG_POINTER_REGNUM/ FRAME_POINTER_REGNUM */\
246 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
247 /* CP 1 Registers */ \
248 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
249 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
250 /* CP 2 Registers */ \
251 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
252 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
253 /* CP 3 Registers */ \
254 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
255 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
258 #define CALL_USED_REGISTERS \
260 /* General purpose register */ \
261 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, \
262 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
263 /* Control Registers */ \
264 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
265 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
266 /* CP 1 Registers */ \
267 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
268 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
269 /* CP 2 Registers */ \
270 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
271 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
272 /* CP 3 Registers */ \
273 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
274 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
277 #define REG_ALLOC_ORDER \
278 { 0, 1, 6, 7, 8, 9, 10, 11, 4, 5, 22, 23, 24, 25, 26, 27, \
279 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 28, 29, 30, 31, 2, 3, \
280 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \
281 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \
282 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \
283 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, \
284 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111, \
285 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, \
286 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, \
287 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159 }
289 #define HARD_REGNO_NREGS(REGNO, MODE) \
290 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
292 /* Return true if REGNO is suitable for holding a quantity of type MODE. */
293 #define HARD_REGNO_MODE_OK(REGNO, MODE) score_hard_regno_mode_ok (REGNO, MODE)
295 /* Value is 1 if it is a good idea to tie two pseudo registers
296 when one has mode MODE1 and one has mode MODE2.
297 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
298 for any hard reg, then this must be 0 for correct output. */
299 #define MODES_TIEABLE_P(MODE1, MODE2) \
300 ((GET_MODE_CLASS (MODE1) == MODE_FLOAT \
301 || GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \
302 == (GET_MODE_CLASS (MODE2) == MODE_FLOAT \
303 || GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT))
305 /* Register Classes. */
306 /* Define the classes of registers for register constraints in the
307 machine description. Also define ranges of constants. */
311 G16_REGS, /* r0 ~ r15 */
312 G32_REGS, /* r0 ~ r31 */
313 T32_REGS, /* r8 ~ r11 | r22 ~ r27 */
317 CE_REGS, /* hi + lo */
322 SP_REGS, /* cnt + lcb + scb */
324 CR_REGS, /* cr0 - cr15 */
329 CPA_REGS, /* cp1 + cp2 + cp3 */
335 #define N_REG_CLASSES ((int) LIM_REG_CLASSES)
337 #define GENERAL_REGS G32_REGS
339 /* Give names of register classes as strings for dump file. */
340 #define REG_CLASS_NAMES \
366 /* Define which registers fit in which classes. */
367 #define REG_CLASS_CONTENTS \
369 /* NO_REGS/G16/G32/T32 */ \
370 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
371 { 0x0000ffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
372 { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
373 { 0x0fc00f00, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
375 { 0x00000000, 0x00010000, 0x00000000, 0x00000000, 0x00000000}, \
376 { 0x00000000, 0x00020000, 0x00000000, 0x00000000, 0x00000000}, \
377 { 0x00000000, 0x00030000, 0x00000000, 0x00000000, 0x00000000}, \
378 /* CN/LC/SC/SP/CR */ \
379 { 0x00000000, 0x00040000, 0x00000000, 0x00000000, 0x00000000}, \
380 { 0x00000000, 0x00080000, 0x00000000, 0x00000000, 0x00000000}, \
381 { 0x00000000, 0x00100000, 0x00000000, 0x00000000, 0x00000000}, \
382 { 0x00000000, 0x001c0000, 0x00000000, 0x00000000, 0x00000000}, \
383 { 0x00000000, 0x0000ffff, 0x00000000, 0x00000000, 0x00000000}, \
384 /* CP1/CP2/CP3/CPA */ \
385 { 0x00000000, 0x00000000, 0xffffffff, 0x00000000, 0x00000000}, \
386 { 0x00000000, 0x00000000, 0x00000000, 0xffffffff, 0x00000000}, \
387 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffffffff}, \
388 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0xffffffff}, \
390 { 0xffffffff, 0x001fffff, 0xffffffff, 0xffffffff, 0xffffffff}, \
393 /* A C expression whose value is a register class containing hard
394 register REGNO. In general there is more that one such class;
395 choose a class which is "minimal", meaning that no smaller class
396 also contains the register. */
397 #define REGNO_REG_CLASS(REGNO) score_reg_class (REGNO)
399 /* A macro whose definition is the name of the class to which a
400 valid base register must belong. A base register is one used in
401 an address which is the register value plus a displacement. */
402 #define BASE_REG_CLASS G16_REGS
404 /* The class value for index registers. */
405 #define INDEX_REG_CLASS NO_REGS
407 #define REG_CLASS_FROM_LETTER(C) score_char_to_class[(unsigned char) (C)]
409 /* Addressing modes, and classification of registers for them. */
410 #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \
411 score_regno_mode_ok_for_base_p (REGNO, 1)
413 #define REGNO_OK_FOR_INDEX_P(NUM) 0
415 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
416 score_preferred_reload_class (X, CLASS)
418 /* If we need to load shorts byte-at-a-time, then we need a scratch. */
419 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
420 score_secondary_reload_class (CLASS, MODE, X)
422 /* Return the register class of a scratch register needed to copy IN into
423 or out of a register in CLASS in MODE. If it can be done directly,
424 NO_REGS is returned. */
425 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
426 score_secondary_reload_class (CLASS, MODE, X)
428 /* Return the maximum number of consecutive registers
429 needed to represent mode MODE in a register of class CLASS. */
430 #define CLASS_MAX_NREGS(CLASS, MODE) \
431 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
433 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
434 (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \
435 ? reg_classes_intersect_p (HI_REG, (CLASS)) : 0)
437 /* The letters I, J, K, L, M, N, O, and P in a register constraint
438 string can be used to stand for particular ranges of immediate
439 operands. This macro defines what the ranges are. C is the
440 letter, and VALUE is a constant value. Return 1 if VALUE is
441 in the range specified by C. */
442 #define CONST_OK_FOR_LETTER_P(VALUE, C) score_const_ok_for_letter_p (VALUE, C)
444 /* Similar, but for floating constants, and defining letters G and H.
445 Here VALUE is the CONST_DOUBLE rtx itself. */
447 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
448 ((C) == 'G' && (VALUE) == CONST0_RTX (GET_MODE (VALUE)))
450 /* Letters in the range `Q' through `U' may be defined in a
451 machine-dependent fashion to stand for arbitrary operand types.
452 The machine description macro `EXTRA_CONSTRAINT' is passed the
453 operand as its first argument and the constraint letter as its
455 #define EXTRA_CONSTRAINT(VALUE, C) score_extra_constraint (VALUE, C)
457 /* Basic Stack Layout. */
458 /* Stack layout; function entry, exit and calling. */
459 #define STACK_GROWS_DOWNWARD
461 #define STACK_PUSH_CODE PRE_DEC
462 #define STACK_POP_CODE POST_INC
464 /* The offset of the first local variable from the beginning of the frame.
465 See compute_frame_size for details about the frame layout. */
466 #define STARTING_FRAME_OFFSET current_function_outgoing_args_size
468 /* The argument pointer always points to the first argument. */
469 #define FIRST_PARM_OFFSET(FUNDECL) 0
471 /* A C expression whose value is RTL representing the value of the return
472 address for the frame COUNT steps up from the current frame. */
473 #define RETURN_ADDR_RTX(count, frame) score_return_addr (count, frame)
475 /* Pick up the return address upon entry to a procedure. */
476 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, RA_REGNUM)
478 /* Exception handling Support. */
479 /* Use r0 to r3 to pass exception handling information. */
480 #define EH_RETURN_DATA_REGNO(N) \
481 ((N) < 4 ? (N) + ARG_REG_FIRST : INVALID_REGNUM)
483 /* The register that holds the return address in exception handlers. */
484 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_REGNUM)
486 /* Registers That Address the Stack Frame. */
487 /* Register to use for pushing function arguments. */
488 #define STACK_POINTER_REGNUM SP_REGNUM
490 /* These two registers don't really exist: they get eliminated to either
491 the stack or hard frame pointer. */
492 #define FRAME_POINTER_REGNUM 53
494 /* we use r2 as the frame pointer. */
495 #define HARD_FRAME_POINTER_REGNUM FP_REGNUM
497 #define ARG_POINTER_REGNUM 54
499 /* Register in which static-chain is passed to a function. */
500 #define STATIC_CHAIN_REGNUM 23
502 /* Elimination Frame Pointer and Arg Pointer */
503 /* Value should be nonzero if functions must have frame pointers.
504 Zero means the frame pointer need not be set up (and parms
505 may be accessed via the stack pointer) in functions that seem suitable.
506 This is computed in `reload', in reload1.c. */
507 #define FRAME_POINTER_REQUIRED current_function_calls_alloca
509 #define ELIMINABLE_REGS \
510 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
511 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
512 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
513 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}}
515 /* We can always eliminate to the hard frame pointer. We can eliminate
516 to the stack pointer unless a frame pointer is needed. */
517 #define CAN_ELIMINATE(FROM, TO) \
518 (((TO) == HARD_FRAME_POINTER_REGNUM) \
519 || ((TO) == STACK_POINTER_REGNUM \
520 && !frame_pointer_needed))
522 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
523 (OFFSET) = score_initial_elimination_offset ((FROM), (TO))
525 /* Passing Function Arguments on the Stack. */
526 /* Allocate stack space for arguments at the beginning of each function. */
527 #define ACCUMULATE_OUTGOING_ARGS 1
529 /* reserve stack space for all argument registers. */
530 #define REG_PARM_STACK_SPACE(FNDECL) UNITS_PER_WORD
532 /* Define this if it is the responsibility of the caller to
533 allocate the area reserved for arguments passed in registers.
534 If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect
535 of this macro is to determine whether the space is included in
536 `current_function_outgoing_args_size'. */
537 #define OUTGOING_REG_PARM_STACK_SPACE 1
539 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
541 /* Passing Arguments in Registers */
542 /* Determine where to put an argument to a function.
543 Value is zero to push the argument on the stack,
544 or a hard register in which to store the argument.
546 MODE is the argument's machine mode.
547 TYPE is the data type of the argument (as a tree).
548 This is null for libcalls where that information may
550 CUM is a variable of type CUMULATIVE_ARGS which gives info about
551 the preceding args and about the function being called.
552 NAMED is nonzero if this argument is a named parameter
553 (otherwise it is an extra parameter matching an ellipsis). */
554 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
555 score_function_arg (&CUM, MODE, TYPE, NAMED)
557 /* A C type for declaring a variable that is used as the first argument of
558 `FUNCTION_ARG' and other related values. For some target machines, the
559 type `int' suffices and can hold the number of bytes of argument so far. */
560 typedef struct score_args
562 unsigned int arg_number; /* how many arguments have been seen */
563 unsigned int num_gprs; /* number of gprs in use */
564 unsigned int stack_words; /* number of words in stack */
567 #define CUMULATIVE_ARGS score_args_t
569 /* Initialize a variable CUM of type CUMULATIVE_ARGS
570 for a call to a function whose data type is FNTYPE.
571 For a library call, FNTYPE is 0. */
572 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, n_named_args) \
573 score_init_cumulative_args (&CUM, FNTYPE, LIBNAME)
575 /* Update the data in CUM to advance over an argument
576 of mode MODE and data type TYPE.
577 (TYPE is null for libcalls where that information may not be available.) */
578 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
579 score_function_arg_advance (&CUM, MODE, TYPE, NAMED)
581 /* 1 if N is a possible register number for function argument passing.
582 We have no FP argument registers when soft-float. When FP registers
583 are 32 bits, we can't directly reference the odd numbered ones. */
584 #define FUNCTION_ARG_REGNO_P(REGNO) \
585 REG_CONTAIN (REGNO, ARG_REG_FIRST, ARG_REG_NUM)
587 /* How Scalar Function Values Are Returned. */
588 #define FUNCTION_VALUE(VALTYPE, FUNC) \
589 score_function_value ((VALTYPE), (FUNC), VOIDmode)
591 #define LIBCALL_VALUE(MODE) score_function_value (NULL_TREE, NULL, (MODE))
593 /* 1 if N is a possible register number for a function value. */
594 #define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == (ARG_REG_FIRST))
596 #define PIC_FUNCTION_ADDR_REGNUM (GP_REG_FIRST + 25)
598 /* How Large Values Are Returned. */
599 #define STRUCT_VALUE 0
601 /* Function Entry and Exit */
602 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
603 the stack pointer does not matter. The value is tested only in
604 functions that have frame pointers.
605 No definition is equivalent to always zero. */
606 #define EXIT_IGNORE_STACK 1
608 /* Generating Code for Profiling */
609 /* Output assembler code to FILE to increment profiler label # LABELNO
610 for profiling a function entry. */
611 #define FUNCTION_PROFILER(FILE, LABELNO) \
613 fprintf (FILE, " .set r1 \n"); \
614 fprintf (FILE, " mv r%d,r%d \n", AT_REGNUM, RA_REGNUM); \
615 fprintf (FILE, " subi r%d, %d \n", STACK_POINTER_REGNUM, 8); \
616 fprintf (FILE, " jl _mcount \n"); \
617 fprintf (FILE, " .set nor1 \n"); \
620 /* Trampolines for Nested Functions. */
621 #define TRAMPOLINE_INSNS 8
623 /* A C expression for the size in bytes of the trampoline, as an integer. */
624 #define TRAMPOLINE_SIZE \
625 (TRAMPOLINE_INSNS * GET_MODE_SIZE (SImode) + GET_MODE_SIZE (ptr_mode) * 2)
627 /* A C statement to initialize the variable parts of a trampoline.
628 ADDR is an RTX for the address of the trampoline; FNADDR is an
629 RTX for the address of the nested function; STATIC_CHAIN is an
630 RTX for the static chain value that should be passed to the
631 function when it is called. */
633 #define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \
634 score_initialize_trampoline (ADDR, FUNC, CHAIN)
636 #define HAVE_PRE_INCREMENT 1
637 #define HAVE_PRE_DECREMENT 1
638 #define HAVE_POST_INCREMENT 1
639 #define HAVE_POST_DECREMENT 1
640 #define HAVE_PRE_MODIFY_DISP 1
641 #define HAVE_POST_MODIFY_DISP 1
642 #define HAVE_PRE_MODIFY_REG 0
643 #define HAVE_POST_MODIFY_REG 0
645 /* Recognize any constant value that is a valid address. */
646 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
648 /* Maximum number of registers that can appear in a valid memory address. */
649 #define MAX_REGS_PER_ADDRESS 1
652 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
653 if (score_address_p (MODE, X, 1)) \
656 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
657 if (score_address_p (MODE, X, 0)) \
661 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
662 and check its validity for a certain class.
663 We have two alternate definitions for each of them.
664 The usual definition accepts all pseudo regs; the other rejects them all.
665 The symbol REG_OK_STRICT causes the latter definition to be used.
667 Most source files want to accept pseudo regs in the hope that
668 they will get allocated to the class that the insn wants them to be in.
669 Some source files that are used after register allocation
670 need to be strict. */
671 #ifndef REG_OK_STRICT
672 #define REG_MODE_OK_FOR_BASE_P(X, MODE) \
673 score_regno_mode_ok_for_base_p (REGNO (X), 0)
675 #define REG_MODE_OK_FOR_BASE_P(X, MODE) \
676 score_regno_mode_ok_for_base_p (REGNO (X), 1)
679 #define REG_OK_FOR_INDEX_P(X) 0
681 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
683 if (score_legitimize_address (&(X))) \
687 /* Go to LABEL if ADDR (a legitimate address expression)
688 has an effect that depends on the machine mode it is used for. */
689 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) {}
691 #define LEGITIMATE_CONSTANT_P(X) 1
693 /* Condition Code Status. */
694 #define SELECT_CC_MODE(OP, X, Y) score_select_cc_mode (OP, X, Y)
696 /* Return nonzero if SELECT_CC_MODE will never return MODE for a
697 floating point inequality comparison. */
698 #define REVERSIBLE_CC_MODE(MODE) 1
700 /* Describing Relative Costs of Operations */
701 /* Compute extra cost of moving data between one register class and another. */
702 #define REGISTER_MOVE_COST(MODE, FROM, TO) \
703 score_register_move_cost (MODE, FROM, TO)
705 /* Moves to and from memory are quite expensive */
706 #define MEMORY_MOVE_COST(MODE, CLASS, TO_P) \
707 (4 + memory_move_secondary_cost ((MODE), (CLASS), (TO_P)))
709 /* Try to generate sequences that don't involve branches. */
710 #define BRANCH_COST 2
712 /* Nonzero if access to memory by bytes is slow and undesirable. */
713 #define SLOW_BYTE_ACCESS 1
715 /* Define this macro if it is as good or better to call a constant
716 function address than to call an address kept in a register. */
717 #define NO_FUNCTION_CSE 1
719 /* Dividing the Output into Sections (Texts, Data, ...). */
720 /* Define the strings to put out for each section in the object file. */
721 #define TEXT_SECTION_ASM_OP "\t.text"
722 #define DATA_SECTION_ASM_OP "\t.data"
723 #define SDATA_SECTION_ASM_OP "\t.sdata"
725 #undef READONLY_DATA_SECTION_ASM_OP
726 #define READONLY_DATA_SECTION_ASM_OP "\t.rdata"
728 /* The Overall Framework of an Assembler File */
729 /* How to start an assembler comment.
730 The leading space is important. */
731 #define ASM_COMMENT_START "#"
733 /* Output to assembler file text saying following lines
734 may contain character constants, extra white space, comments, etc. */
735 #define ASM_APP_ON "#APP\n\t.set volatile\n"
737 /* Output to assembler file text saying following lines
738 no longer contain unusual constructs. */
739 #define ASM_APP_OFF "#NO_APP\n\t.set optimize\n"
741 /* Output of Uninitialized Variables. */
742 /* This says how to define a global common symbol. */
743 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGN) \
744 score_declare_object (STREAM, NAME, "\n\t.comm\t", \
745 ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
746 SIZE, ALIGN / BITS_PER_UNIT);
748 /* This says how to define a local common symbol (i.e., not visible to
750 #undef ASM_OUTPUT_ALIGNED_LOCAL
751 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
752 score_declare_object (STREAM, NAME, "\n\t.lcomm\t", \
753 ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
754 SIZE, ALIGN / BITS_PER_UNIT);
756 /* Globalizing directive for a label. */
757 #define GLOBAL_ASM_OP "\t.globl\t"
759 /* Output and Generation of Labels */
760 /* This is how to declare a function name. The actual work of
761 emitting the label is moved to function_prologue, so that we can
762 get the line number correctly emitted before the .ent directive,
763 and after any .file directives. Define as empty so that the function
764 is not declared before the .ent directive elsewhere. */
765 #undef ASM_DECLARE_FUNCTION_NAME
766 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)
768 #undef ASM_DECLARE_OBJECT_NAME
769 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
770 score_declare_object (STREAM, NAME, "", ":\n", 0)
772 /* This says how to output an external. It would be possible not to
773 output anything and let undefined symbol become external. However
774 the assembler uses length information on externals to allocate in
775 data/sdata bss/sbss, thereby saving exec time. */
776 #define ASM_OUTPUT_EXTERNAL(STREAM, DECL, NAME) \
777 score_output_external (STREAM, DECL, NAME)
779 /* This handles the magic '..CURRENT_FUNCTION' symbol, which means
780 'the start of the function that this code is output in'. */
781 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
782 fprintf ((STREAM), "%s", (NAME))
784 /* Local compiler-generated symbols must have a prefix that the assembler
786 #define LOCAL_LABEL_PREFIX "."
788 #undef ASM_GENERATE_INTERNAL_LABEL
789 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
790 sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long) (NUM))
792 /* Output of Assembler Instructions. */
793 #define REGISTER_NAMES \
794 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
795 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
796 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
797 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
799 "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \
800 "cr8", "cr9", "cr10", "cr11", "cr12", "cr13", "cr14", "cr15", \
802 "ceh", "cel", "sr0", "sr1", "sr2", "_arg", "_frame", "", \
803 "cr24", "cr25", "cr26", "cr27", "cr28", "cr29", "cr30", "cr31", \
805 "c1r0", "c1r1", "c1r2", "c1r3", "c1r4", "c1r5", "c1r6", "c1r7", \
806 "c1r8", "c1r9", "c1r10", "c1r11", "c1r12", "c1r13", "c1r14", "c1r15", \
807 "c1r16", "c1r17", "c1r18", "c1r19", "c1r20", "c1r21", "c1r22", "c1r23", \
808 "c1r24", "c1r25", "c1r26", "c1r27", "c1r28", "c1r29", "c1r30", "c1r31", \
810 "c2r0", "c2r1", "c2r2", "c2r3", "c2r4", "c2r5", "c2r6", "c2r7", \
811 "c2r8", "c2r9", "c2r10", "c2r11", "c2r12", "c2r13", "c2r14", "c2r15", \
812 "c2r16", "c2r17", "c2r18", "c2r19", "c2r20", "c2r21", "c2r22", "c2r23", \
813 "c2r24", "c2r25", "c2r26", "c2r27", "c2r28", "c2r29", "c2r30", "c2r31", \
815 "c3r0", "c3r1", "c3r2", "c3r3", "c3r4", "c3r5", "c3r6", "c3r7", \
816 "c3r8", "c3r9", "c3r10", "c3r11", "c3r12", "c3r13", "c3r14", "c3r15", \
817 "c3r16", "c3r17", "c3r18", "c3r19", "c3r20", "c3r21", "c3r22", "c3r23", \
818 "c3r24", "c3r25", "c3r26", "c3r27", "c3r28", "c3r29", "c3r30", "c3r31", \
821 /* Print operand X (an rtx) in assembler syntax to file FILE. */
822 #define PRINT_OPERAND(STREAM, X, CODE) score_print_operand (STREAM, X, CODE)
824 /* A C expression which evaluates to true if CODE is a valid
825 punctuation character for use in the `PRINT_OPERAND' macro. */
826 #define PRINT_OPERAND_PUNCT_VALID_P(C) ((C) == '[' || (C) == ']')
828 /* Print a memory address as an operand to reference that memory location. */
829 #define PRINT_OPERAND_ADDRESS(STREAM, X) \
830 score_print_operand_address (STREAM, X)
832 /* By default on the S+core, external symbols do not have an underscore
834 #define USER_LABEL_PREFIX ""
836 /* This is how to output an insn to push a register on the stack. */
837 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
839 fprintf (STREAM, "\tpush! %s,[%s]\n", \
841 reg_names[STACK_POINTER_REGNUM]); \
844 /* This is how to output an insn to pop a register from the stack. */
845 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
847 fprintf (STREAM, "\tpop! %s,[%s]\n", \
849 reg_names[STACK_POINTER_REGNUM]); \
852 /* Output of Dispatch Tables. */
853 /* This is how to output an element of a case-vector. We can make the
854 entries PC-relative in GP-relative when .gp(d)word is supported. */
855 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
858 fprintf (STREAM, "\t.gpword %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
860 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
863 /* This is how to output an element of a case-vector that is absolute. */
864 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
865 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE)
867 /* Assembler Commands for Exception Regions */
868 /* Since the S+core is encoded in the least-significant bit
869 of the address, mask it off return addresses for purposes of
870 finding exception handling regions. */
871 #define MASK_RETURN_ADDR constm1_rtx
873 /* Assembler Commands for Alignment */
874 /* This is how to output an assembler line to advance the location
875 counter by SIZE bytes. */
876 #undef ASM_OUTPUT_SKIP
877 #define ASM_OUTPUT_SKIP(STREAM, SIZE) \
878 fprintf (STREAM, "\t.space\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
880 /* This is how to output an assembler line
881 that says to advance the location counter
882 to a multiple of 2**LOG bytes. */
883 #define ASM_OUTPUT_ALIGN(STREAM, LOG) \
884 fprintf (STREAM, "\t.align\t%d\n", (LOG))
886 /* Macros Affecting All Debugging Formats. */
887 #ifndef PREFERRED_DEBUGGING_TYPE
888 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
891 /* Specific Options for DBX Output. */
892 #define DBX_DEBUGGING_INFO 1
894 /* By default, turn on GDB extensions. */
895 #define DEFAULT_GDB_EXTENSIONS 1
897 #define DBX_CONTIN_LENGTH 0
899 /* File Names in DBX Format. */
900 #define DWARF2_DEBUGGING_INFO 1
902 /* The DWARF 2 CFA column which tracks the return address. */
903 #define DWARF_FRAME_RETURN_COLUMN 3
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 if operations between registers always perform the operation
910 on the full register even if a narrower mode is specified. */
911 #define WORD_REGISTER_OPERATIONS
913 /* All references are zero extended. */
914 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
916 /* Define if loading short immediate values into registers sign extends. */
917 #define SHORT_IMMEDIATES_SIGN_EXTEND
919 /* Max number of bytes we can move from memory to memory
920 in one reasonably fast instruction. */
923 /* Define this to be nonzero if shift instructions ignore all but the low-order
925 #define SHIFT_COUNT_TRUNCATED 1
927 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
928 is done just by pretending it is already truncated. */
929 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
931 /* Specify the machine mode that pointers have.
932 After generation of rtl, the compiler makes no further distinction
933 between pointers and any other objects of this machine mode. */
936 /* Give call MEMs SImode since it is the "most permissive" mode
937 for 32-bit targets. */
938 #define FUNCTION_MODE Pmode
940 struct extern_list GTY ((chain_next ("%h.next")))
942 struct extern_list *next; /* next external */
943 const char *name; /* name of the external */
944 int size; /* size in bytes */
947 extern GTY (()) struct extern_list *extern_head;