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} %{mscore5:-SCORE5} %{mscore5u:-SCORE5U} \
42 %{mscore7:%{!mmac:-SCORE7}} %{mscore7:%{mmac:-SCORE7D}} \
43 %{mscore7d:-SCORE7D} %{G*}"
46 #define LINK_SPEC "%{!mel:-EB} %{mel:-EL} %{G*}"
48 /* Run-time Target Specification. */
49 #define TARGET_CPU_CPP_BUILTINS() \
51 builtin_define ("SUNPLUS"); \
52 builtin_define ("__SCORE__"); \
53 builtin_define ("__score__"); \
54 if (TARGET_LITTLE_ENDIAN) \
55 builtin_define ("__scorele__"); \
57 builtin_define ("__scorebe__"); \
59 builtin_define ("__score5u__"); \
61 builtin_define ("__score7__"); \
64 #define TARGET_DEFAULT MASK_SCORE7
66 #define TARGET_VERSION \
67 fprintf (stderr, "Sunplus S+CORE %s", SCORE_GCC_VERSION);
69 #define OVERRIDE_OPTIONS score_override_options ()
71 /* Show we can debug even without a frame pointer. */
72 #define CAN_DEBUG_WITHOUT_FP
74 /* Target machine storage layout. */
75 #define BITS_BIG_ENDIAN 0
76 #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
77 #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
79 /* Define this to set the endianness to use in libgcc2.c, which can
80 not depend on target_flags. */
81 #if defined(__scorele__)
82 #define LIBGCC2_WORDS_BIG_ENDIAN 0
84 #define LIBGCC2_WORDS_BIG_ENDIAN 1
87 /* Width of a word, in units (bytes). */
88 #define UNITS_PER_WORD 4
90 /* Define this macro if it is advisable to hold scalars in registers
91 in a wider mode than that declared by the program. In such cases,
92 the value is constrained to be within the bounds of the declared
93 type, but kept valid in the wider mode. The signedness of the
94 extension may differ from that of the type. */
95 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
96 if (GET_MODE_CLASS (MODE) == MODE_INT \
97 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
100 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
101 #define PARM_BOUNDARY BITS_PER_WORD
102 #define STACK_BOUNDARY BITS_PER_WORD
104 /* Allocation boundary (in *bits*) for the code of a function. */
105 #define FUNCTION_BOUNDARY BITS_PER_WORD
107 /* There is no point aligning anything to a rounder boundary than this. */
108 #define BIGGEST_ALIGNMENT LONG_DOUBLE_TYPE_SIZE
110 /* If defined, a C expression to compute the alignment for a static
111 variable. TYPE is the data type, and ALIGN is the alignment that
112 the object would ordinarily have. The value of this macro is used
113 instead of that alignment to align the object.
115 If this macro is not defined, then ALIGN is used.
117 One use of this macro is to increase alignment of medium-size
118 data to make it all fit in fewer cache lines. Another is to
119 cause character arrays to be word-aligned so that `strcpy' calls
120 that copy constants to character arrays can be done inline. */
121 #define DATA_ALIGNMENT(TYPE, ALIGN) \
122 ((((ALIGN) < BITS_PER_WORD) \
123 && (TREE_CODE (TYPE) == ARRAY_TYPE \
124 || TREE_CODE (TYPE) == UNION_TYPE \
125 || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN))
127 /* If defined, a C expression to compute the alignment given to a
128 constant that is being placed in memory. EXP is the constant
129 and ALIGN is the alignment that the object would ordinarily have.
130 The value of this macro is used instead of that alignment to align
133 If this macro is not defined, then ALIGN is used.
135 The typical use of this macro is to increase alignment for string
136 constants to be word aligned so that `strcpy' calls that copy
137 constants can be done inline. */
138 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
139 ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
140 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
142 /* If defined, a C expression to compute the alignment for a local
143 variable. TYPE is the data type, and ALIGN is the alignment that
144 the object would ordinarily have. The value of this macro is used
145 instead of that alignment to align the object.
147 If this macro is not defined, then ALIGN is used.
149 One use of this macro is to increase alignment of medium-size
150 data to make it all fit in fewer cache lines. */
151 #define LOCAL_ALIGNMENT(TYPE, ALIGN) \
152 ((TREE_CODE (TYPE) == ARRAY_TYPE \
153 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
154 && (ALIGN) < BITS_PER_WORD) ? BITS_PER_WORD : (ALIGN))
156 /* Alignment of field after `int : 0' in a structure. */
157 #define EMPTY_FIELD_BOUNDARY 32
159 /* All accesses must be aligned. */
160 #define STRICT_ALIGNMENT 1
162 /* Score requires that structure alignment is affected by bitfields. */
163 #define PCC_BITFIELD_TYPE_MATTERS 1
165 /* long double is not a fixed mode, but the idea is that, if we
166 support long double, we also want a 128-bit integer type. */
167 #define MAX_FIXED_MODE_SIZE LONG_DOUBLE_TYPE_SIZE
169 #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
171 /* Layout of Data Type. */
172 /* Set the sizes of the core types. */
173 #define INT_TYPE_SIZE 32
174 #define SHORT_TYPE_SIZE 16
175 #define LONG_TYPE_SIZE 32
176 #define LONG_LONG_TYPE_SIZE 64
177 #define CHAR_TYPE_SIZE 8
178 #define FLOAT_TYPE_SIZE 32
179 #define DOUBLE_TYPE_SIZE 64
180 #define LONG_DOUBLE_TYPE_SIZE 64
182 /* Define this as 1 if `char' should by default be signed; else as 0. */
183 #undef DEFAULT_SIGNED_CHAR
184 #define DEFAULT_SIGNED_CHAR 1
186 /* Default definitions for size_t and ptrdiff_t. */
187 #define SIZE_TYPE "unsigned int"
192 - 32 integer registers
193 - 16 control registers (cond)
194 - 16 special registers (ceh/cel/cnt/lcr/scr/arg/fp)
195 - 32 coprocessors 1 registers
196 - 32 coprocessors 2 registers
197 - 32 coprocessors 3 registers. */
198 #define FIRST_PSEUDO_REGISTER 160
200 /* By default, fix the kernel registers (r30 and r31), the global
201 pointer (r28) and the stack pointer (r0). This can change
202 depending on the command-line options.
204 Regarding coprocessor registers: without evidence to the contrary,
205 it's best to assume that each coprocessor register has a unique
206 use. This can be overridden, in, e.g., override_options() or
207 CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate
208 for a particular target. */
210 /* Control Registers, use mfcr/mtcr insn
228 Custom Engine Register, use mfce/mtce
232 Special-Purpose Register, use mfsr/mtsr
237 53 ARG_POINTER_REGNUM
238 54 FRAME_POINTER_REGNUM
239 but Control register have 32 registers, cr16-cr31. */
240 #define FIXED_REGISTERS \
242 /* General Purpose Registers */ \
243 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
244 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, \
245 /* Control Registers */ \
246 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
247 /* CEH/ CEL/ CNT/ LCR/ SCR / ARG_POINTER_REGNUM/ FRAME_POINTER_REGNUM */\
248 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
249 /* CP 1 Registers */ \
250 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
251 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
252 /* CP 2 Registers */ \
253 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
254 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
255 /* CP 3 Registers */ \
256 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
257 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
260 #define CALL_USED_REGISTERS \
262 /* General purpose register */ \
263 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, \
264 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
265 /* Control Registers */ \
266 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
267 1, 1, 1, 1, 1, 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 REG_ALLOC_ORDER \
280 { 0, 1, 6, 7, 8, 9, 10, 11, 4, 5, 22, 23, 24, 25, 26, 27, \
281 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 28, 29, 30, 31, 2, 3, \
282 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \
283 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \
284 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \
285 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, \
286 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111, \
287 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, \
288 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, \
289 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159 }
291 /* Macro to conditionally modify fixed_regs/call_used_regs. */
292 #define PIC_OFFSET_TABLE_REGNUM 29
294 #define CONDITIONAL_REGISTER_USAGE \
297 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = \
298 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 0; \
301 #define HARD_REGNO_NREGS(REGNO, MODE) \
302 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
304 /* Return true if REGNO is suitable for holding a quantity of type MODE. */
305 #define HARD_REGNO_MODE_OK(REGNO, MODE) score_hard_regno_mode_ok (REGNO, MODE)
307 /* Value is 1 if it is a good idea to tie two pseudo registers
308 when one has mode MODE1 and one has mode MODE2.
309 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
310 for any hard reg, then this must be 0 for correct output. */
311 #define MODES_TIEABLE_P(MODE1, MODE2) \
312 ((GET_MODE_CLASS (MODE1) == MODE_FLOAT \
313 || GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \
314 == (GET_MODE_CLASS (MODE2) == MODE_FLOAT \
315 || GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT))
317 /* Register Classes. */
318 /* Define the classes of registers for register constraints in the
319 machine description. Also define ranges of constants. */
323 G16_REGS, /* r0 ~ r15 */
324 G32_REGS, /* r0 ~ r31 */
325 T32_REGS, /* r8 ~ r11 | r22 ~ r27 */
329 CE_REGS, /* hi + lo */
334 SP_REGS, /* cnt + lcb + scb */
336 CR_REGS, /* cr0 - cr15 */
341 CPA_REGS, /* cp1 + cp2 + cp3 */
347 #define N_REG_CLASSES ((int) LIM_REG_CLASSES)
349 #define GENERAL_REGS G32_REGS
351 /* Give names of register classes as strings for dump file. */
352 #define REG_CLASS_NAMES \
378 /* Define which registers fit in which classes. */
379 #define REG_CLASS_CONTENTS \
381 /* NO_REGS/G16/G32/T32 */ \
382 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
383 { 0x0000ffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
384 { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
385 { 0x0fc00f00, 0x00000000, 0x00000000, 0x00000000, 0x00000000}, \
387 { 0x00000000, 0x00010000, 0x00000000, 0x00000000, 0x00000000}, \
388 { 0x00000000, 0x00020000, 0x00000000, 0x00000000, 0x00000000}, \
389 { 0x00000000, 0x00030000, 0x00000000, 0x00000000, 0x00000000}, \
390 /* CN/LC/SC/SP/CR */ \
391 { 0x00000000, 0x00040000, 0x00000000, 0x00000000, 0x00000000}, \
392 { 0x00000000, 0x00080000, 0x00000000, 0x00000000, 0x00000000}, \
393 { 0x00000000, 0x00100000, 0x00000000, 0x00000000, 0x00000000}, \
394 { 0x00000000, 0x001c0000, 0x00000000, 0x00000000, 0x00000000}, \
395 { 0x00000000, 0x0000ffff, 0x00000000, 0x00000000, 0x00000000}, \
396 /* CP1/CP2/CP3/CPA */ \
397 { 0x00000000, 0x00000000, 0xffffffff, 0x00000000, 0x00000000}, \
398 { 0x00000000, 0x00000000, 0x00000000, 0xffffffff, 0x00000000}, \
399 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffffffff}, \
400 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0xffffffff}, \
402 { 0xffffffff, 0x001fffff, 0xffffffff, 0xffffffff, 0xffffffff}, \
405 /* A C expression whose value is a register class containing hard
406 register REGNO. In general there is more that one such class;
407 choose a class which is "minimal", meaning that no smaller class
408 also contains the register. */
409 #define REGNO_REG_CLASS(REGNO) score_reg_class (REGNO)
411 /* A macro whose definition is the name of the class to which a
412 valid base register must belong. A base register is one used in
413 an address which is the register value plus a displacement. */
414 #define BASE_REG_CLASS G16_REGS
416 /* The class value for index registers. */
417 #define INDEX_REG_CLASS NO_REGS
419 #define REG_CLASS_FROM_LETTER(C) score_char_to_class[(unsigned char) (C)]
421 /* Addressing modes, and classification of registers for them. */
422 #define REGNO_MODE_OK_FOR_BASE_P(REGNO, MODE) \
423 score_regno_mode_ok_for_base_p (REGNO, 1)
425 #define REGNO_OK_FOR_INDEX_P(NUM) 0
427 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
428 score_preferred_reload_class (X, CLASS)
430 /* If we need to load shorts byte-at-a-time, then we need a scratch. */
431 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
432 score_secondary_reload_class (CLASS, MODE, X)
434 /* Return the register class of a scratch register needed to copy IN into
435 or out of a register in CLASS in MODE. If it can be done directly,
436 NO_REGS is returned. */
437 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
438 score_secondary_reload_class (CLASS, MODE, X)
440 /* Return the maximum number of consecutive registers
441 needed to represent mode MODE in a register of class CLASS. */
442 #define CLASS_MAX_NREGS(CLASS, MODE) \
443 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
445 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
446 (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \
447 ? reg_classes_intersect_p (HI_REG, (CLASS)) : 0)
449 /* The letters I, J, K, L, M, N, O, and P in a register constraint
450 string can be used to stand for particular ranges of immediate
451 operands. This macro defines what the ranges are. C is the
452 letter, and VALUE is a constant value. Return 1 if VALUE is
453 in the range specified by C. */
454 #define CONST_OK_FOR_LETTER_P(VALUE, C) score_const_ok_for_letter_p (VALUE, C)
456 /* Similar, but for floating constants, and defining letters G and H.
457 Here VALUE is the CONST_DOUBLE rtx itself. */
459 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
460 ((C) == 'G' && (VALUE) == CONST0_RTX (GET_MODE (VALUE)))
462 /* Letters in the range `Q' through `U' may be defined in a
463 machine-dependent fashion to stand for arbitrary operand types.
464 The machine description macro `EXTRA_CONSTRAINT' is passed the
465 operand as its first argument and the constraint letter as its
467 #define EXTRA_CONSTRAINT(VALUE, C) score_extra_constraint (VALUE, C)
469 /* Basic Stack Layout. */
470 /* Stack layout; function entry, exit and calling. */
471 #define STACK_GROWS_DOWNWARD
473 #define STACK_PUSH_CODE PRE_DEC
474 #define STACK_POP_CODE POST_INC
476 /* The offset of the first local variable from the beginning of the frame.
477 See compute_frame_size for details about the frame layout. */
478 #define STARTING_FRAME_OFFSET current_function_outgoing_args_size
480 /* The argument pointer always points to the first argument. */
481 #define FIRST_PARM_OFFSET(FUNDECL) 0
483 /* A C expression whose value is RTL representing the value of the return
484 address for the frame COUNT steps up from the current frame. */
485 #define RETURN_ADDR_RTX(count, frame) score_return_addr (count, frame)
487 /* Pick up the return address upon entry to a procedure. */
488 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, RA_REGNUM)
490 /* Exception handling Support. */
491 /* Use r0 to r3 to pass exception handling information. */
492 #define EH_RETURN_DATA_REGNO(N) \
493 ((N) < 4 ? (N) + ARG_REG_FIRST : INVALID_REGNUM)
495 /* The register that holds the return address in exception handlers. */
496 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_REGNUM)
498 /* Registers That Address the Stack Frame. */
499 /* Register to use for pushing function arguments. */
500 #define STACK_POINTER_REGNUM SP_REGNUM
502 /* These two registers don't really exist: they get eliminated to either
503 the stack or hard frame pointer. */
504 #define FRAME_POINTER_REGNUM 53
506 /* we use r2 as the frame pointer. */
507 #define HARD_FRAME_POINTER_REGNUM FP_REGNUM
509 #define ARG_POINTER_REGNUM 54
511 /* Register in which static-chain is passed to a function. */
512 #define STATIC_CHAIN_REGNUM 23
514 /* Elimination Frame Pointer and Arg Pointer */
515 /* Value should be nonzero if functions must have frame pointers.
516 Zero means the frame pointer need not be set up (and parms
517 may be accessed via the stack pointer) in functions that seem suitable.
518 This is computed in `reload', in reload1.c. */
519 #define FRAME_POINTER_REQUIRED current_function_calls_alloca
521 #define ELIMINABLE_REGS \
522 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
523 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
524 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
525 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}}
527 /* We can always eliminate to the hard frame pointer. We can eliminate
528 to the stack pointer unless a frame pointer is needed. */
529 #define CAN_ELIMINATE(FROM, TO) \
530 (((TO) == HARD_FRAME_POINTER_REGNUM) \
531 || ((TO) == STACK_POINTER_REGNUM \
532 && !frame_pointer_needed))
534 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
535 (OFFSET) = score_initial_elimination_offset ((FROM), (TO))
537 /* Passing Function Arguments on the Stack. */
538 /* Allocate stack space for arguments at the beginning of each function. */
539 #define ACCUMULATE_OUTGOING_ARGS 1
541 /* reserve stack space for all argument registers. */
542 #define REG_PARM_STACK_SPACE(FNDECL) UNITS_PER_WORD
544 /* Define this if it is the responsibility of the caller to
545 allocate the area reserved for arguments passed in registers.
546 If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect
547 of this macro is to determine whether the space is included in
548 `current_function_outgoing_args_size'. */
549 #define OUTGOING_REG_PARM_STACK_SPACE 1
551 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
553 /* Passing Arguments in Registers */
554 /* Determine where to put an argument to a function.
555 Value is zero to push the argument on the stack,
556 or a hard register in which to store the argument.
558 MODE is the argument's machine mode.
559 TYPE is the data type of the argument (as a tree).
560 This is null for libcalls where that information may
562 CUM is a variable of type CUMULATIVE_ARGS which gives info about
563 the preceding args and about the function being called.
564 NAMED is nonzero if this argument is a named parameter
565 (otherwise it is an extra parameter matching an ellipsis). */
566 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
567 score_function_arg (&CUM, MODE, TYPE, NAMED)
569 /* A C type for declaring a variable that is used as the first argument of
570 `FUNCTION_ARG' and other related values. For some target machines, the
571 type `int' suffices and can hold the number of bytes of argument so far. */
572 typedef struct score_args
574 unsigned int arg_number; /* how many arguments have been seen */
575 unsigned int num_gprs; /* number of gprs in use */
576 unsigned int stack_words; /* number of words in stack */
579 #define CUMULATIVE_ARGS score_args_t
581 /* Initialize a variable CUM of type CUMULATIVE_ARGS
582 for a call to a function whose data type is FNTYPE.
583 For a library call, FNTYPE is 0. */
584 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, n_named_args) \
585 score_init_cumulative_args (&CUM, FNTYPE, LIBNAME)
587 /* Update the data in CUM to advance over an argument
588 of mode MODE and data type TYPE.
589 (TYPE is null for libcalls where that information may not be available.) */
590 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
591 score_function_arg_advance (&CUM, MODE, TYPE, NAMED)
593 /* 1 if N is a possible register number for function argument passing.
594 We have no FP argument registers when soft-float. When FP registers
595 are 32 bits, we can't directly reference the odd numbered ones. */
596 #define FUNCTION_ARG_REGNO_P(REGNO) \
597 REG_CONTAIN (REGNO, ARG_REG_FIRST, ARG_REG_NUM)
599 /* How Scalar Function Values Are Returned. */
600 #define FUNCTION_VALUE(VALTYPE, FUNC) \
601 score_function_value ((VALTYPE), (FUNC), VOIDmode)
603 #define LIBCALL_VALUE(MODE) score_function_value (NULL_TREE, NULL, (MODE))
605 /* 1 if N is a possible register number for a function value. */
606 #define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == (ARG_REG_FIRST))
608 #define PIC_FUNCTION_ADDR_REGNUM (GP_REG_FIRST + 25)
610 /* How Large Values Are Returned. */
611 #define STRUCT_VALUE 0
613 /* Function Entry and Exit */
614 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
615 the stack pointer does not matter. The value is tested only in
616 functions that have frame pointers.
617 No definition is equivalent to always zero. */
618 #define EXIT_IGNORE_STACK 1
620 /* Generating Code for Profiling */
621 /* Output assembler code to FILE to increment profiler label # LABELNO
622 for profiling a function entry. */
623 #define FUNCTION_PROFILER(FILE, LABELNO) \
625 fprintf (FILE, " .set r1 \n"); \
626 fprintf (FILE, " mv r%d,r%d \n", AT_REGNUM, RA_REGNUM); \
627 fprintf (FILE, " subi r%d, %d \n", STACK_POINTER_REGNUM, 8); \
628 fprintf (FILE, " jl _mcount \n"); \
629 fprintf (FILE, " .set nor1 \n"); \
632 /* Trampolines for Nested Functions. */
633 #define TRAMPOLINE_INSNS 8
635 /* A C expression for the size in bytes of the trampoline, as an integer. */
636 #define TRAMPOLINE_SIZE \
637 (TRAMPOLINE_INSNS * GET_MODE_SIZE (SImode) + GET_MODE_SIZE (ptr_mode) * 2)
639 /* A C statement to initialize the variable parts of a trampoline.
640 ADDR is an RTX for the address of the trampoline; FNADDR is an
641 RTX for the address of the nested function; STATIC_CHAIN is an
642 RTX for the static chain value that should be passed to the
643 function when it is called. */
645 #define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \
646 score_initialize_trampoline (ADDR, FUNC, CHAIN)
648 #define HAVE_PRE_INCREMENT 1
649 #define HAVE_PRE_DECREMENT 1
650 #define HAVE_POST_INCREMENT 1
651 #define HAVE_POST_DECREMENT 1
652 #define HAVE_PRE_MODIFY_DISP 1
653 #define HAVE_POST_MODIFY_DISP 1
654 #define HAVE_PRE_MODIFY_REG 0
655 #define HAVE_POST_MODIFY_REG 0
657 /* Recognize any constant value that is a valid address. */
658 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
660 /* Maximum number of registers that can appear in a valid memory address. */
661 #define MAX_REGS_PER_ADDRESS 1
664 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
665 if (score_address_p (MODE, X, 1)) \
668 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
669 if (score_address_p (MODE, X, 0)) \
673 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
674 and check its validity for a certain class.
675 We have two alternate definitions for each of them.
676 The usual definition accepts all pseudo regs; the other rejects them all.
677 The symbol REG_OK_STRICT causes the latter definition to be used.
679 Most source files want to accept pseudo regs in the hope that
680 they will get allocated to the class that the insn wants them to be in.
681 Some source files that are used after register allocation
682 need to be strict. */
683 #ifndef REG_OK_STRICT
684 #define REG_MODE_OK_FOR_BASE_P(X, MODE) \
685 score_regno_mode_ok_for_base_p (REGNO (X), 0)
687 #define REG_MODE_OK_FOR_BASE_P(X, MODE) \
688 score_regno_mode_ok_for_base_p (REGNO (X), 1)
691 #define REG_OK_FOR_INDEX_P(X) 0
693 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
695 if (score_legitimize_address (&(X))) \
699 /* Go to LABEL if ADDR (a legitimate address expression)
700 has an effect that depends on the machine mode it is used for. */
701 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) {}
703 #define LEGITIMATE_CONSTANT_P(X) 1
705 /* Condition Code Status. */
706 #define SELECT_CC_MODE(OP, X, Y) score_select_cc_mode (OP, X, Y)
708 /* Return nonzero if SELECT_CC_MODE will never return MODE for a
709 floating point inequality comparison. */
710 #define REVERSIBLE_CC_MODE(MODE) 1
712 /* Describing Relative Costs of Operations */
713 /* Compute extra cost of moving data between one register class and another. */
714 #define REGISTER_MOVE_COST(MODE, FROM, TO) \
715 score_register_move_cost (MODE, FROM, TO)
717 /* Moves to and from memory are quite expensive */
718 #define MEMORY_MOVE_COST(MODE, CLASS, TO_P) \
719 (4 + memory_move_secondary_cost ((MODE), (CLASS), (TO_P)))
721 /* Try to generate sequences that don't involve branches. */
722 #define BRANCH_COST 2
724 /* Nonzero if access to memory by bytes is slow and undesirable. */
725 #define SLOW_BYTE_ACCESS 1
727 /* Define this macro if it is as good or better to call a constant
728 function address than to call an address kept in a register. */
729 #define NO_FUNCTION_CSE 1
731 /* Dividing the Output into Sections (Texts, Data, ...). */
732 /* Define the strings to put out for each section in the object file. */
733 #define TEXT_SECTION_ASM_OP "\t.text"
734 #define DATA_SECTION_ASM_OP "\t.data"
735 #define SDATA_SECTION_ASM_OP "\t.sdata"
737 #undef READONLY_DATA_SECTION_ASM_OP
738 #define READONLY_DATA_SECTION_ASM_OP "\t.rdata"
740 /* The Overall Framework of an Assembler File */
741 /* How to start an assembler comment.
742 The leading space is important. */
743 #define ASM_COMMENT_START "#"
745 /* Output to assembler file text saying following lines
746 may contain character constants, extra white space, comments, etc. */
747 #define ASM_APP_ON "#APP\n\t.set volatile\n"
749 /* Output to assembler file text saying following lines
750 no longer contain unusual constructs. */
751 #define ASM_APP_OFF "#NO_APP\n\t.set optimize\n"
753 /* Output of Uninitialized Variables. */
754 /* This says how to define a global common symbol. */
755 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGN) \
756 score_declare_object (STREAM, NAME, "\n\t.comm\t", \
757 ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
758 SIZE, ALIGN / BITS_PER_UNIT);
760 /* This says how to define a local common symbol (i.e., not visible to
762 #undef ASM_OUTPUT_ALIGNED_LOCAL
763 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
764 score_declare_object (STREAM, NAME, "\n\t.lcomm\t", \
765 ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
766 SIZE, ALIGN / BITS_PER_UNIT);
768 /* Globalizing directive for a label. */
769 #define GLOBAL_ASM_OP "\t.globl\t"
771 /* Output and Generation of Labels */
772 /* This is how to declare a function name. The actual work of
773 emitting the label is moved to function_prologue, so that we can
774 get the line number correctly emitted before the .ent directive,
775 and after any .file directives. Define as empty so that the function
776 is not declared before the .ent directive elsewhere. */
777 #undef ASM_DECLARE_FUNCTION_NAME
778 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)
780 #undef ASM_DECLARE_OBJECT_NAME
781 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
782 score_declare_object (STREAM, NAME, "", ":\n", 0)
784 /* This says how to output an external. It would be possible not to
785 output anything and let undefined symbol become external. However
786 the assembler uses length information on externals to allocate in
787 data/sdata bss/sbss, thereby saving exec time. */
788 #undef ASM_OUTPUT_EXTERNAL
789 #define ASM_OUTPUT_EXTERNAL(STREAM, DECL, NAME) \
790 score_output_external (STREAM, DECL, NAME)
792 /* This handles the magic '..CURRENT_FUNCTION' symbol, which means
793 'the start of the function that this code is output in'. */
794 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
795 fprintf ((STREAM), "%s", (NAME))
797 /* Local compiler-generated symbols must have a prefix that the assembler
799 #define LOCAL_LABEL_PREFIX "."
801 #undef ASM_GENERATE_INTERNAL_LABEL
802 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
803 sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long) (NUM))
805 /* Output of Assembler Instructions. */
806 #define REGISTER_NAMES \
807 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
808 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
809 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
810 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
812 "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \
813 "cr8", "cr9", "cr10", "cr11", "cr12", "cr13", "cr14", "cr15", \
815 "ceh", "cel", "sr0", "sr1", "sr2", "_arg", "_frame", "", \
816 "cr24", "cr25", "cr26", "cr27", "cr28", "cr29", "cr30", "cr31", \
818 "c1r0", "c1r1", "c1r2", "c1r3", "c1r4", "c1r5", "c1r6", "c1r7", \
819 "c1r8", "c1r9", "c1r10", "c1r11", "c1r12", "c1r13", "c1r14", "c1r15", \
820 "c1r16", "c1r17", "c1r18", "c1r19", "c1r20", "c1r21", "c1r22", "c1r23", \
821 "c1r24", "c1r25", "c1r26", "c1r27", "c1r28", "c1r29", "c1r30", "c1r31", \
823 "c2r0", "c2r1", "c2r2", "c2r3", "c2r4", "c2r5", "c2r6", "c2r7", \
824 "c2r8", "c2r9", "c2r10", "c2r11", "c2r12", "c2r13", "c2r14", "c2r15", \
825 "c2r16", "c2r17", "c2r18", "c2r19", "c2r20", "c2r21", "c2r22", "c2r23", \
826 "c2r24", "c2r25", "c2r26", "c2r27", "c2r28", "c2r29", "c2r30", "c2r31", \
828 "c3r0", "c3r1", "c3r2", "c3r3", "c3r4", "c3r5", "c3r6", "c3r7", \
829 "c3r8", "c3r9", "c3r10", "c3r11", "c3r12", "c3r13", "c3r14", "c3r15", \
830 "c3r16", "c3r17", "c3r18", "c3r19", "c3r20", "c3r21", "c3r22", "c3r23", \
831 "c3r24", "c3r25", "c3r26", "c3r27", "c3r28", "c3r29", "c3r30", "c3r31", \
834 /* Print operand X (an rtx) in assembler syntax to file FILE. */
835 #define PRINT_OPERAND(STREAM, X, CODE) score_print_operand (STREAM, X, CODE)
837 /* A C expression which evaluates to true if CODE is a valid
838 punctuation character for use in the `PRINT_OPERAND' macro. */
839 #define PRINT_OPERAND_PUNCT_VALID_P(C) ((C) == '[' || (C) == ']')
841 /* Print a memory address as an operand to reference that memory location. */
842 #define PRINT_OPERAND_ADDRESS(STREAM, X) \
843 score_print_operand_address (STREAM, X)
845 /* By default on the S+core, external symbols do not have an underscore
847 #define USER_LABEL_PREFIX ""
849 /* This is how to output an insn to push a register on the stack. */
850 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
852 fprintf (STREAM, "\tpush! %s,[%s]\n", \
854 reg_names[STACK_POINTER_REGNUM]); \
857 /* This is how to output an insn to pop a register from the stack. */
858 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
860 fprintf (STREAM, "\tpop! %s,[%s]\n", \
862 reg_names[STACK_POINTER_REGNUM]); \
865 /* Output of Dispatch Tables. */
866 /* This is how to output an element of a case-vector. We can make the
867 entries PC-relative in GP-relative when .gp(d)word is supported. */
868 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
871 fprintf (STREAM, "\t.gpword %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
873 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE); \
876 /* This is how to output an element of a case-vector that is absolute. */
877 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
878 fprintf (STREAM, "\t.word %sL%d\n", LOCAL_LABEL_PREFIX, VALUE)
880 /* Assembler Commands for Exception Regions */
881 /* Since the S+core is encoded in the least-significant bit
882 of the address, mask it off return addresses for purposes of
883 finding exception handling regions. */
884 #define MASK_RETURN_ADDR constm1_rtx
886 /* Assembler Commands for Alignment */
887 /* This is how to output an assembler line to advance the location
888 counter by SIZE bytes. */
889 #undef ASM_OUTPUT_SKIP
890 #define ASM_OUTPUT_SKIP(STREAM, SIZE) \
891 fprintf (STREAM, "\t.space\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
893 /* This is how to output an assembler line
894 that says to advance the location counter
895 to a multiple of 2**LOG bytes. */
896 #define ASM_OUTPUT_ALIGN(STREAM, LOG) \
897 fprintf (STREAM, "\t.align\t%d\n", (LOG))
899 /* Macros Affecting All Debugging Formats. */
900 #ifndef PREFERRED_DEBUGGING_TYPE
901 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
904 /* Specific Options for DBX Output. */
905 #define DBX_DEBUGGING_INFO 1
907 /* By default, turn on GDB extensions. */
908 #define DEFAULT_GDB_EXTENSIONS 1
910 #define DBX_CONTIN_LENGTH 0
912 /* File Names in DBX Format. */
913 #define DWARF2_DEBUGGING_INFO 1
915 /* The DWARF 2 CFA column which tracks the return address. */
916 #define DWARF_FRAME_RETURN_COLUMN 3
918 /* Specify the machine mode that this machine uses
919 for the index in the tablejump instruction. */
920 #define CASE_VECTOR_MODE SImode
922 /* Define if operations between registers always perform the operation
923 on the full register even if a narrower mode is specified. */
924 #define WORD_REGISTER_OPERATIONS
926 /* All references are zero extended. */
927 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
929 /* Define if loading short immediate values into registers sign extends. */
930 #define SHORT_IMMEDIATES_SIGN_EXTEND
932 /* Max number of bytes we can move from memory to memory
933 in one reasonably fast instruction. */
936 /* Define this to be nonzero if shift instructions ignore all but the low-order
938 #define SHIFT_COUNT_TRUNCATED 1
940 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
941 is done just by pretending it is already truncated. */
942 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
944 /* Specify the machine mode that pointers have.
945 After generation of rtl, the compiler makes no further distinction
946 between pointers and any other objects of this machine mode. */
949 /* Give call MEMs SImode since it is the "most permissive" mode
950 for 32-bit targets. */
951 #define FUNCTION_MODE Pmode
953 struct extern_list GTY ((chain_next ("%h.next")))
955 struct extern_list *next; /* next external */
956 const char *name; /* name of the external */
957 int size; /* size in bytes */
960 extern GTY (()) struct extern_list *extern_head;