1 /* Definitions of target machine for GNU compiler.
3 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
4 Contributed by Jeff Law (law@cygnus.com).
6 This file is part of GNU CC.
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 #include "svr4.h" /* Automatically does #undef CPP_PREDEFINES */
26 #define ASM_SPEC "%{mv*:-mv%*}"
29 #define CPP_SPEC "-D__v850__"
38 /* Names to predefine in the preprocessor for this target machine. */
39 #define CPP_PREDEFINES "-D__v851__ -D__v850"
41 /* Print subsidiary information on the compiler version in use. */
43 #ifndef TARGET_VERSION
44 #define TARGET_VERSION fprintf (stderr, " (NEC V850)");
48 /* Run-time compilation parameters selecting different hardware subsets. */
50 extern int target_flags;
52 /* Target flags bits, see below for an explanation of the bits. */
53 #define MASK_GHS 0x00000001
54 #define MASK_LONG_CALLS 0x00000002
55 #define MASK_EP 0x00000004
56 #define MASK_PROLOG_FUNCTION 0x00000008
57 #define MASK_DEBUG 0x40000000
59 #define MASK_CPU 0x00000030
60 #define MASK_V850 0x00000010
62 #define MASK_BIG_SWITCH 0x00000100
65 #define MASK_DEFAULT MASK_V850
68 #define TARGET_V850 ((target_flags & MASK_CPU) == MASK_V850)
71 /* Macros used in the machine description to test the flags. */
73 /* The GHS calling convention support doesn't really work,
74 mostly due to a lack of documentation. Outstanding issues:
76 * How do varargs & stdarg really work. How to they handle
77 passing structures (if at all).
79 * Doubles are normally 4 byte aligned, except in argument
80 lists where they are 8 byte aligned. Is the alignment
81 in the argument list based on the first parameter,
82 first stack parameter, etc etc.
84 * Passing/returning of large structures probably isn't the same
85 as GHS. We don't have enough documentation on their conventions
88 * Tests of SETUP_INCOMING_VARARGS need to be made runtime checks
89 since it depends on TARGET_GHS. */
90 #define TARGET_GHS (target_flags & MASK_GHS)
92 /* Don't do PC-relative calls, instead load the address of the target
93 function into a register and perform a register indirect call. */
94 #define TARGET_LONG_CALLS (target_flags & MASK_LONG_CALLS)
96 /* Whether to optimize space by using ep (r30) for pointers with small offsets
98 #define TARGET_EP (target_flags & MASK_EP)
100 /* Whether to call out-of-line functions to save registers or not. */
101 #define TARGET_PROLOG_FUNCTION (target_flags & MASK_PROLOG_FUNCTION)
103 /* Whether to emit 2 byte per entry or 4 byte per entry switch tables. */
104 #define TARGET_BIG_SWITCH (target_flags & MASK_BIG_SWITCH)
106 /* General debug flag */
107 #define TARGET_DEBUG (target_flags & MASK_DEBUG)
109 /* Macro to define tables used to set the flags.
110 This is a list in braces of pairs in braces,
111 each pair being { "NAME", VALUE }
112 where VALUE is the bits to set or minus the bits to clear.
113 An empty string NAME is used to identify the default VALUE. */
115 #define TARGET_SWITCHES \
116 {{ "ghs", MASK_GHS }, \
117 { "no-ghs", -MASK_GHS }, \
118 { "long-calls", MASK_LONG_CALLS }, \
119 { "no-long-calls", -MASK_LONG_CALLS }, \
121 { "no-ep", -MASK_EP }, \
122 { "prolog-function", MASK_PROLOG_FUNCTION }, \
123 { "no-prolog-function", -MASK_PROLOG_FUNCTION }, \
124 { "space", MASK_EP | MASK_PROLOG_FUNCTION }, \
125 { "debug", MASK_DEBUG }, \
126 { "v850", MASK_V850 }, \
127 { "v850", -(MASK_V850 ^ MASK_CPU) }, \
128 { "big-switch", MASK_BIG_SWITCH }, \
130 { "", TARGET_DEFAULT}}
132 #ifndef EXTRA_SWITCHES
133 #define EXTRA_SWITCHES
136 #ifndef TARGET_DEFAULT
137 #define TARGET_DEFAULT MASK_DEFAULT
140 /* Information about the various small memory areas. */
141 struct small_memory_info {
148 enum small_memory_type {
149 /* tiny data area, using EP as base register */
150 SMALL_MEMORY_TDA = 0,
151 /* small data area using dp as base register */
153 /* zero data area using r0 as base register */
158 extern struct small_memory_info small_memory[(int)SMALL_MEMORY_max];
160 /* This macro is similar to `TARGET_SWITCHES' but defines names of
161 command options that have values. Its definition is an
162 initializer with a subgrouping for each command option.
164 Each subgrouping contains a string constant, that defines the
165 fixed part of the option name, and the address of a variable. The
166 variable, type `char *', is set to the variable part of the given
167 option if the fixed part matches. The actual option name is made
168 by appending `-m' to the specified name.
170 Here is an example which defines `-mshort-data-NUMBER'. If the
171 given option is `-mshort-data-512', the variable `m88k_short_data'
172 will be set to the string `"512"'.
174 extern char *m88k_short_data;
175 #define TARGET_OPTIONS \
176 { { "short-data-", &m88k_short_data } } */
178 #define TARGET_OPTIONS \
180 { "tda=", &small_memory[ (int)SMALL_MEMORY_TDA ].value }, \
181 { "tda-", &small_memory[ (int)SMALL_MEMORY_TDA ].value }, \
182 { "sda=", &small_memory[ (int)SMALL_MEMORY_SDA ].value }, \
183 { "sda-", &small_memory[ (int)SMALL_MEMORY_SDA ].value }, \
184 { "zda=", &small_memory[ (int)SMALL_MEMORY_ZDA ].value }, \
185 { "zda-", &small_memory[ (int)SMALL_MEMORY_ZDA ].value }, \
188 /* Sometimes certain combinations of command options do not make
189 sense on a particular target machine. You can define a macro
190 `OVERRIDE_OPTIONS' to take account of this. This macro, if
191 defined, is executed once just after all the command options have
194 Don't use this macro to turn on various extra optimizations for
195 `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */
196 #define OVERRIDE_OPTIONS override_options ()
199 /* Show we can debug even without a frame pointer. */
200 #define CAN_DEBUG_WITHOUT_FP
202 /* Some machines may desire to change what optimizations are
203 performed for various optimization levels. This macro, if
204 defined, is executed once just after the optimization level is
205 determined and before the remainder of the command options have
206 been parsed. Values set in this macro are used as the default
207 values for the other command line options.
209 LEVEL is the optimization level specified; 2 if `-O2' is
210 specified, 1 if `-O' is specified, and 0 if neither is specified.
212 You should not use this macro to change options that are not
213 machine-specific. These should uniformly selected by the same
214 optimization level on all supported machines. Use this macro to
215 enable machine-specific optimizations.
217 *Do not examine `write_symbols' in this macro!* The debugging
218 options are not supposed to alter the generated code. */
220 #define OPTIMIZATION_OPTIONS(LEVEL) \
223 target_flags |= (MASK_EP | MASK_PROLOG_FUNCTION); \
227 /* Target machine storage layout */
229 /* Define this if most significant bit is lowest numbered
230 in instructions that operate on numbered bit-fields.
231 This is not true on the NEC V850. */
232 #define BITS_BIG_ENDIAN 0
234 /* Define this if most significant byte of a word is the lowest numbered. */
235 /* This is not true on the NEC V850. */
236 #define BYTES_BIG_ENDIAN 0
238 /* Define this if most significant word of a multiword number is lowest
240 This is not true on the NEC V850. */
241 #define WORDS_BIG_ENDIAN 0
243 /* Number of bits in an addressable storage unit */
244 #define BITS_PER_UNIT 8
246 /* Width in bits of a "word", which is the contents of a machine register.
247 Note that this is not necessarily the width of data type `int';
248 if using 16-bit ints on a 68000, this would still be 32.
249 But on a machine with 16-bit registers, this would be 16. */
250 #define BITS_PER_WORD 32
252 /* Width of a word, in units (bytes). */
253 #define UNITS_PER_WORD 4
255 /* Width in bits of a pointer.
256 See also the macro `Pmode' defined below. */
257 #define POINTER_SIZE 32
259 /* Define this macro if it is advisable to hold scalars in registers
260 in a wider mode than that declared by the program. In such cases,
261 the value is constrained to be within the bounds of the declared
262 type, but kept valid in the wider mode. The signedness of the
263 extension may differ from that of the type.
265 Some simple experiments have shown that leaving UNSIGNEDP alone
266 generates the best overall code. */
268 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
269 if (GET_MODE_CLASS (MODE) == MODE_INT \
270 && GET_MODE_SIZE (MODE) < 4) \
273 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
274 #define PARM_BOUNDARY 32
276 /* The stack goes in 32 bit lumps. */
277 #define STACK_BOUNDARY 32
279 /* Allocation boundary (in *bits*) for the code of a function.
280 16 is the minimum boundary; 32 would give better performance. */
281 #define FUNCTION_BOUNDARY 16
283 /* No data type wants to be aligned rounder than this. */
284 #define BIGGEST_ALIGNMENT 32
286 /* Alignment of field after `int : 0' in a structure. */
287 #define EMPTY_FIELD_BOUNDARY 32
289 /* No structure field wants to be aligned rounder than this. */
290 #define BIGGEST_FIELD_ALIGNMENT 32
292 /* Define this if move instructions will actually fail to work
293 when given unaligned data. */
294 #define STRICT_ALIGNMENT 1
296 /* Define this as 1 if `char' should by default be signed; else as 0.
298 On the NEC V850, loads do sign extension, so make this default. */
299 #define DEFAULT_SIGNED_CHAR 1
301 /* Define results of standard character escape sequences. */
302 #define TARGET_BELL 007
303 #define TARGET_BS 010
304 #define TARGET_TAB 011
305 #define TARGET_NEWLINE 012
306 #define TARGET_VT 013
307 #define TARGET_FF 014
308 #define TARGET_CR 015
310 /* Standard register usage. */
312 /* Number of actual hardware registers.
313 The hardware registers are assigned numbers for the compiler
314 from 0 to just below FIRST_PSEUDO_REGISTER.
316 All registers that the compiler knows about must be given numbers,
317 even those that are not normally considered general registers. */
319 #define FIRST_PSEUDO_REGISTER 34
321 /* 1 for registers that have pervasive standard uses
322 and are not available for the register allocator. */
324 #define FIXED_REGISTERS \
325 { 1, 1, 0, 1, 1, 0, 0, 0, \
326 0, 0, 0, 0, 0, 0, 0, 0, \
327 0, 0, 0, 0, 0, 0, 0, 0, \
328 0, 0, 0, 0, 0, 0, 1, 0, \
331 /* 1 for registers not available across function calls.
332 These must include the FIXED_REGISTERS and also any
333 registers that can be used without being saved.
334 The latter must include the registers where values are returned
335 and the register where structure-value addresses are passed.
336 Aside from that, you can include as many other registers as you
339 #define CALL_USED_REGISTERS \
340 { 1, 1, 0, 1, 1, 1, 1, 1, \
341 1, 1, 1, 1, 1, 1, 1, 1, \
342 1, 1, 1, 1, 0, 0, 0, 0, \
343 0, 0, 0, 0, 0, 0, 1, 1, \
346 /* List the order in which to allocate registers. Each register must be
347 listed once, even those in FIXED_REGISTERS.
349 On the 850, we make the return registers first, then all of the volatile
350 registers, then the saved registers in reverse order to better save the
351 registers with an out of line function , and finnally the fixed
354 #define REG_ALLOC_ORDER \
356 10, 11, /* return registers */ \
357 12, 13, 14, 15, 16, 17, 18, 19, /* scratch registers */ \
358 6, 7, 8, 9, 31, /* argument registers */ \
359 29, 28, 27, 26, 25, 24, 23, 22, /* saved registers */ \
361 0, 1, 3, 4, 5, 30, 32, 33 /* fixed registers */ \
364 /* Return number of consecutive hard regs needed starting at reg REGNO
365 to hold something of mode MODE.
367 This is ordinarily the length in words of a value of mode MODE
368 but can be less for certain modes in special long registers. */
370 #define HARD_REGNO_NREGS(REGNO, MODE) \
371 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
373 /* Value is 1 if hard register REGNO can hold a value of machine-mode
376 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
377 ((((REGNO) & 1) == 0) || (GET_MODE_SIZE (MODE) <= 4))
379 /* Value is 1 if it is a good idea to tie two pseudo registers
380 when one has mode MODE1 and one has mode MODE2.
381 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
382 for any hard reg, then this must be 0 for correct output. */
383 #define MODES_TIEABLE_P(MODE1, MODE2) \
384 (MODE1 == MODE2 || GET_MODE_SIZE (MODE1) <= 4 && GET_MODE_SIZE (MODE2) <= 4)
387 /* Define the classes of registers for register constraints in the
388 machine description. Also define ranges of constants.
390 One of the classes must always be named ALL_REGS and include all hard regs.
391 If there is more than one class, another class must be named NO_REGS
392 and contain no registers.
394 The name GENERAL_REGS must be the name of a class (or an alias for
395 another name such as ALL_REGS). This is the class of registers
396 that is allowed by "g" or "r" in a register constraint.
397 Also, registers outside this class are allocated only when
398 instructions express preferences for them.
400 The classes must be numbered in nondecreasing order; that is,
401 a larger-numbered class must never be contained completely
402 in a smaller-numbered class.
404 For any two classes, it is very desirable that there be another
405 class that represents their union. */
408 NO_REGS, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES
411 #define N_REG_CLASSES (int) LIM_REG_CLASSES
413 /* Give names of register classes as strings for dump file. */
415 #define REG_CLASS_NAMES \
416 { "NO_REGS", "GENERAL_REGS", "ALL_REGS", "LIM_REGS" }
418 /* Define which registers fit in which classes.
419 This is an initializer for a vector of HARD_REG_SET
420 of length N_REG_CLASSES. */
422 #define REG_CLASS_CONTENTS \
423 { 0x00000000, /* No regs */ \
424 0xffffffff, /* GENERAL_REGS */ \
425 0xffffffff, /* ALL_REGS */ \
428 /* The same information, inverted:
429 Return the class number of the smallest class containing
430 reg number REGNO. This could be a conditional expression
431 or could index an array. */
433 #define REGNO_REG_CLASS(REGNO) GENERAL_REGS
435 /* The class value for index registers, and the one for base regs. */
437 #define INDEX_REG_CLASS NO_REGS
438 #define BASE_REG_CLASS GENERAL_REGS
440 /* Get reg_class from a letter such as appears in the machine description. */
442 #define REG_CLASS_FROM_LETTER(C) (NO_REGS)
444 /* Macros to check register numbers against specific register classes. */
446 /* These assume that REGNO is a hard or pseudo reg number.
447 They give nonzero only if REGNO is a hard reg of the suitable class
448 or a pseudo reg currently allocated to a suitable hard reg.
449 Since they use reg_renumber, they are safe only once reg_renumber
450 has been allocated, which happens in local-alloc.c. */
452 #define REGNO_OK_FOR_BASE_P(regno) \
453 ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
455 #define REGNO_OK_FOR_INDEX_P(regno) 0
457 /* Given an rtx X being reloaded into a reg required to be
458 in class CLASS, return the class of reg to actually use.
459 In general this is just CLASS; but on some machines
460 in some cases it is preferable to use a more restrictive class. */
462 #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
464 /* Return the maximum number of consecutive registers
465 needed to represent mode MODE in a register of class CLASS. */
467 #define CLASS_MAX_NREGS(CLASS, MODE) \
468 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
470 /* The letters I, J, K, L, M, N, O, P in a register constraint string
471 can be used to stand for particular ranges of immediate operands.
472 This macro defines what the ranges are.
473 C is the letter, and VALUE is a constant value.
474 Return 1 if VALUE is in the range specified by C. */
476 #define INT_7_BITS(VALUE) ((unsigned) (VALUE) + 0x40 < 0x80)
477 #define INT_8_BITS(VALUE) ((unsigned) (VALUE) + 0x80 < 0x100)
479 #define CONST_OK_FOR_I(VALUE) ((VALUE) == 0)
480 /* 5 bit signed immediate */
481 #define CONST_OK_FOR_J(VALUE) ((unsigned) (VALUE) + 0x10 < 0x20)
482 /* 16 bit signed immediate */
483 #define CONST_OK_FOR_K(VALUE) ((unsigned) (VALUE) + 0x8000 < 0x10000)
484 /* valid constant for movhi instruction. */
485 #define CONST_OK_FOR_L(VALUE) \
486 (((unsigned) ((int) (VALUE) >> 16) + 0x8000 < 0x10000) \
487 && CONST_OK_FOR_I ((VALUE & 0xffff)))
488 /* 16 bit unsigned immediate */
489 #define CONST_OK_FOR_M(VALUE) ((unsigned)(VALUE) < 0x10000)
490 /* 5 bit unsigned immediate in shift instructions */
491 #define CONST_OK_FOR_N(VALUE) ((unsigned) (VALUE) <= 31)
493 #define CONST_OK_FOR_O(VALUE) 0
494 #define CONST_OK_FOR_P(VALUE) 0
497 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
498 ((C) == 'I' ? CONST_OK_FOR_I (VALUE) : \
499 (C) == 'J' ? CONST_OK_FOR_J (VALUE) : \
500 (C) == 'K' ? CONST_OK_FOR_K (VALUE) : \
501 (C) == 'L' ? CONST_OK_FOR_L (VALUE) : \
502 (C) == 'M' ? CONST_OK_FOR_M (VALUE) : \
503 (C) == 'N' ? CONST_OK_FOR_N (VALUE) : \
504 (C) == 'O' ? CONST_OK_FOR_O (VALUE) : \
505 (C) == 'P' ? CONST_OK_FOR_P (VALUE) : \
508 /* Similar, but for floating constants, and defining letters G and H.
509 Here VALUE is the CONST_DOUBLE rtx itself.
511 `G' is a zero of some form. */
513 #define CONST_DOUBLE_OK_FOR_G(VALUE) \
514 ((GET_MODE_CLASS (GET_MODE (VALUE)) == MODE_FLOAT \
515 && (VALUE) == CONST0_RTX (GET_MODE (VALUE))) \
516 || (GET_MODE_CLASS (GET_MODE (VALUE)) == MODE_INT \
517 && CONST_DOUBLE_LOW (VALUE) == 0 \
518 && CONST_DOUBLE_HIGH (VALUE) == 0))
520 #define CONST_DOUBLE_OK_FOR_H(VALUE) 0
522 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
523 ((C) == 'G' ? CONST_DOUBLE_OK_FOR_G (VALUE) \
524 : (C) == 'H' ? CONST_DOUBLE_OK_FOR_H (VALUE) \
528 /* Stack layout; function entry, exit and calling. */
530 /* Define this if pushing a word on the stack
531 makes the stack pointer a smaller address. */
533 #define STACK_GROWS_DOWNWARD
535 /* Define this if the nominal address of the stack frame
536 is at the high-address end of the local variables;
537 that is, each additional local variable allocated
538 goes at a more negative offset in the frame. */
540 #define FRAME_GROWS_DOWNWARD
542 /* Offset within stack frame to start allocating local variables at.
543 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
544 first local allocated. Otherwise, it is the offset to the BEGINNING
545 of the first local allocated. */
547 #define STARTING_FRAME_OFFSET 0
549 /* Offset of first parameter from the argument pointer register value. */
550 /* Is equal to the size of the saved fp + pc, even if an fp isn't
551 saved since the value is used before we know. */
553 #define FIRST_PARM_OFFSET(FNDECL) 0
555 /* Specify the registers used for certain standard purposes.
556 The values of these macros are register numbers. */
558 /* Register to use for pushing function arguments. */
559 #define STACK_POINTER_REGNUM 3
561 /* Base register for access to local variables of the function. */
562 #define FRAME_POINTER_REGNUM 32
564 /* On some machines the offset between the frame pointer and starting
565 offset of the automatic variables is not known until after register
566 allocation has been done (for example, because the saved registers
567 are between these two locations). On those machines, define
568 `FRAME_POINTER_REGNUM' the number of a special, fixed register to
569 be used internally until the offset is known, and define
570 `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number
571 used for the frame pointer.
573 You should define this macro only in the very rare circumstances
574 when it is not possible to calculate the offset between the frame
575 pointer and the automatic variables until after register
576 allocation has been completed. When this macro is defined, you
577 must also indicate in your definition of `ELIMINABLE_REGS' how to
578 eliminate `FRAME_POINTER_REGNUM' into either
579 `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'.
581 Do not define this macro if it would be the same as
582 `FRAME_POINTER_REGNUM'. */
583 #define HARD_FRAME_POINTER_REGNUM 29
585 /* Base register for access to arguments of the function. */
586 #define ARG_POINTER_REGNUM 33
588 /* Register in which static-chain is passed to a function. */
589 #define STATIC_CHAIN_REGNUM 5
591 /* Value should be nonzero if functions must have frame pointers.
592 Zero means the frame pointer need not be set up (and parms
593 may be accessed via the stack pointer) in functions that seem suitable.
594 This is computed in `reload', in reload1.c. */
595 #define FRAME_POINTER_REQUIRED 0
597 /* If defined, this macro specifies a table of register pairs used to
598 eliminate unneeded registers that point into the stack frame. If
599 it is not defined, the only elimination attempted by the compiler
600 is to replace references to the frame pointer with references to
603 The definition of this macro is a list of structure
604 initializations, each of which specifies an original and
605 replacement register.
607 On some machines, the position of the argument pointer is not
608 known until the compilation is completed. In such a case, a
609 separate hard register must be used for the argument pointer.
610 This register can be eliminated by replacing it with either the
611 frame pointer or the argument pointer, depending on whether or not
612 the frame pointer has been eliminated.
614 In this case, you might specify:
615 #define ELIMINABLE_REGS \
616 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
617 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
618 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
620 Note that the elimination of the argument pointer with the stack
621 pointer is specified first since that is the preferred elimination. */
623 #define ELIMINABLE_REGS \
624 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
625 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \
626 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
627 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }} \
629 /* A C expression that returns non-zero if the compiler is allowed to
630 try to replace register number FROM-REG with register number
631 TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is
632 defined, and will usually be the constant 1, since most of the
633 cases preventing register elimination are things that the compiler
634 already knows about. */
636 #define CAN_ELIMINATE(FROM, TO) \
637 ((TO) == STACK_POINTER_REGNUM ? ! frame_pointer_needed : 1)
639 /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It
640 specifies the initial difference between the specified pair of
641 registers. This macro must be defined if `ELIMINABLE_REGS' is
644 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
646 if ((FROM) == FRAME_POINTER_REGNUM) \
647 (OFFSET) = get_frame_size () + current_function_outgoing_args_size; \
648 else if ((FROM) == ARG_POINTER_REGNUM) \
649 (OFFSET) = compute_frame_size (get_frame_size (), (long *)0); \
654 /* A guess for the V850. */
655 #define PROMOTE_PROTOTYPES 1
657 /* Keep the stack pointer constant throughout the function. */
658 #define ACCUMULATE_OUTGOING_ARGS
660 /* Value is the number of bytes of arguments automatically
661 popped when returning from a subroutine call.
662 FUNDECL is the declaration node of the function (as a tree),
663 FUNTYPE is the data type of the function (as a tree),
664 or for a library call it is an identifier node for the subroutine name.
665 SIZE is the number of bytes of arguments passed on the stack. */
667 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
670 /* Define a data type for recording info about an argument list
671 during the scan of that argument list. This data type should
672 hold all necessary information about the function itself
673 and about the args processed so far, enough to enable macros
674 such as FUNCTION_ARG to determine where the next arg should go. */
676 #define CUMULATIVE_ARGS struct cum_arg
677 struct cum_arg { int nbytes; };
679 /* Define where to put the arguments to a function.
680 Value is zero to push the argument on the stack,
681 or a hard register in which to store the argument.
683 MODE is the argument's machine mode.
684 TYPE is the data type of the argument (as a tree).
685 This is null for libcalls where that information may
687 CUM is a variable of type CUMULATIVE_ARGS which gives info about
688 the preceding args and about the function being called.
689 NAMED is nonzero if this argument is a named parameter
690 (otherwise it is an extra parameter matching an ellipsis). */
692 struct rtx_def *function_arg();
693 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
694 function_arg (&CUM, MODE, TYPE, NAMED)
696 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
697 function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED)
699 /* Initialize a variable CUM of type CUMULATIVE_ARGS
700 for a call to a function whose data type is FNTYPE.
701 For a library call, FNTYPE is 0. */
703 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
706 /* Update the data in CUM to advance over an argument
707 of mode MODE and data type TYPE.
708 (TYPE is null for libcalls where that information may not be available.) */
710 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
711 ((CUM).nbytes += ((MODE) != BLKmode \
712 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD \
713 : (int_size_in_bytes (TYPE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD))
715 /* When a parameter is passed in a register, stack space is still
717 #define REG_PARM_STACK_SPACE(DECL) (!TARGET_GHS ? 16 : 0)
719 /* Define this if the above stack space is to be considered part of the
720 space allocated by the caller. */
721 #define OUTGOING_REG_PARM_STACK_SPACE
723 extern int current_function_anonymous_args;
724 /* Do any setup necessary for varargs/stdargs functions. */
725 #define SETUP_INCOMING_VARARGS(CUM, MODE, TYPE, PAS, SECOND) \
726 current_function_anonymous_args = (!TARGET_GHS ? 1 : 0);
728 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
729 ((TYPE) && int_size_in_bytes (TYPE) > 8)
731 #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \
732 ((TYPE) && int_size_in_bytes (TYPE) > 8)
734 /* 1 if N is a possible register number for function argument passing. */
736 #define FUNCTION_ARG_REGNO_P(N) (N >= 6 && N <= 9)
738 /* Define how to find the value returned by a function.
739 VALTYPE is the data type of the value (as a tree).
740 If the precise function being called is known, FUNC is its FUNCTION_DECL;
741 otherwise, FUNC is 0. */
743 #define FUNCTION_VALUE(VALTYPE, FUNC) \
744 gen_rtx (REG, TYPE_MODE (VALTYPE), 10)
746 /* Define how to find the value returned by a library function
747 assuming the value has mode MODE. */
749 #define LIBCALL_VALUE(MODE) \
750 gen_rtx (REG, MODE, 10)
752 /* 1 if N is a possible register number for a function value. */
754 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 10)
756 /* Return values > 8 bytes in length in memory. */
757 #define DEFAULT_PCC_STRUCT_RETURN 0
758 #define RETURN_IN_MEMORY(TYPE) \
759 (int_size_in_bytes (TYPE) > 8 || TYPE_MODE (TYPE) == BLKmode)
761 /* Register in which address to store a structure value
762 is passed to a function. On the V850 it's passed as
763 the first parameter. */
765 #define STRUCT_VALUE 0
767 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
768 the stack pointer does not matter. The value is tested only in
769 functions that have frame pointers.
770 No definition is equivalent to always zero. */
772 #define EXIT_IGNORE_STACK 1
774 /* Output assembler code to FILE to increment profiler label # LABELNO
775 for profiling a function entry. */
777 #define FUNCTION_PROFILER(FILE, LABELNO) ;
779 #define TRAMPOLINE_TEMPLATE(FILE) \
781 fprintf (FILE, "\tjarl .+4,r12\n"); \
782 fprintf (FILE, "\tld.w 12[r12],r5\n"); \
783 fprintf (FILE, "\tld.w 16[r12],r12\n"); \
784 fprintf (FILE, "\tjmp [r12]\n"); \
785 fprintf (FILE, "\tnop\n"); \
786 fprintf (FILE, "\t.long 0\n"); \
787 fprintf (FILE, "\t.long 0\n"); \
790 /* Length in units of the trampoline for entering a nested function. */
792 #define TRAMPOLINE_SIZE 24
794 /* Emit RTL insns to initialize the variable parts of a trampoline.
795 FNADDR is an RTX for the address of the function's pure code.
796 CXT is an RTX for the static chain value for the function. */
798 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
800 emit_move_insn (gen_rtx (MEM, SImode, plus_constant ((TRAMP), 16)), \
802 emit_move_insn (gen_rtx (MEM, SImode, plus_constant ((TRAMP), 20)), \
806 /* Addressing modes, and classification of registers for them. */
809 /* 1 if X is an rtx for a constant that is a valid address. */
811 /* ??? This seems too exclusive. May get better code by accepting more
812 possibilities here, in particular, should accept ZDA_NAME SYMBOL_REFs. */
814 #define CONSTANT_ADDRESS_P(X) \
815 (GET_CODE (X) == CONST_INT \
816 && CONST_OK_FOR_K (INTVAL (X)))
818 /* Maximum number of registers that can appear in a valid memory address. */
820 #define MAX_REGS_PER_ADDRESS 1
822 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
823 and check its validity for a certain class.
824 We have two alternate definitions for each of them.
825 The usual definition accepts all pseudo regs; the other rejects
826 them unless they have been allocated suitable hard regs.
827 The symbol REG_OK_STRICT causes the latter definition to be used.
829 Most source files want to accept pseudo regs in the hope that
830 they will get allocated to the class that the insn wants them to be in.
831 Source files for reload pass need to be strict.
832 After reload, it makes no difference, since pseudo regs have
833 been eliminated by then. */
835 #ifndef REG_OK_STRICT
837 /* Nonzero if X is a hard reg that can be used as an index
838 or if it is a pseudo reg. */
839 #define REG_OK_FOR_INDEX_P(X) 0
840 /* Nonzero if X is a hard reg that can be used as a base reg
841 or if it is a pseudo reg. */
842 #define REG_OK_FOR_BASE_P(X) 1
843 #define REG_OK_FOR_INDEX_P_STRICT(X) 0
844 #define REG_OK_FOR_BASE_P_STRICT(X) REGNO_OK_FOR_BASE_P (REGNO (X))
849 /* Nonzero if X is a hard reg that can be used as an index. */
850 #define REG_OK_FOR_INDEX_P(X) 0
851 /* Nonzero if X is a hard reg that can be used as a base reg. */
852 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
857 /* A C expression that defines the optional machine-dependent
858 constraint letters that can be used to segregate specific types of
859 operands, usually memory references, for the target machine.
860 Normally this macro will not be defined. If it is required for a
861 particular target machine, it should return 1 if VALUE corresponds
862 to the operand type represented by the constraint letter C. If C
863 is not defined as an extra constraint, the value returned should
864 be 0 regardless of VALUE.
866 For example, on the ROMP, load instructions cannot have their
867 output in r0 if the memory reference contains a symbolic address.
868 Constraint letter `Q' is defined as representing a memory address
869 that does *not* contain a symbolic address. An alternative is
870 specified with a `Q' constraint on the input and `r' on the
871 output. The next alternative specifies `m' on the input and a
872 register class that does not include r0 on the output. */
874 #define EXTRA_CONSTRAINT(OP, C) \
875 ((C) == 'Q' ? ep_memory_operand (OP, GET_MODE (OP)) \
876 : (C) == 'R' ? special_symbolref_operand (OP, VOIDmode) \
877 : (C) == 'S' ? (GET_CODE (OP) == SYMBOL_REF && ! ZDA_NAME_P (XSTR (OP, 0))) \
879 : (C) == 'U' ? ((GET_CODE (OP) == SYMBOL_REF && ZDA_NAME_P (XSTR (OP, 0))) \
880 || (GET_CODE (OP) == CONST \
881 && GET_CODE (XEXP (OP, 0)) == PLUS \
882 && GET_CODE (XEXP (XEXP (OP, 0), 0)) == SYMBOL_REF \
883 && ZDA_NAME_P (XSTR (XEXP (XEXP (OP, 0), 0), 0)))) \
886 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
887 that is a valid memory address for an instruction.
888 The MODE argument is the machine mode for the MEM expression
889 that wants to use this address.
891 The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
892 except for CONSTANT_ADDRESS_P which is actually
893 machine-independent. */
895 /* Accept either REG or SUBREG where a register is valid. */
897 #define RTX_OK_FOR_BASE_P(X) \
898 ((REG_P (X) && REG_OK_FOR_BASE_P (X)) \
899 || (GET_CODE (X) == SUBREG && REG_P (SUBREG_REG (X)) \
900 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
902 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
904 if (RTX_OK_FOR_BASE_P (X)) goto ADDR; \
905 if (CONSTANT_ADDRESS_P (X) \
906 && (MODE == QImode || INTVAL (X) % 2 == 0)) \
908 if (GET_CODE (X) == LO_SUM \
909 && GET_CODE (XEXP (X, 0)) == REG \
910 && REG_OK_FOR_BASE_P (XEXP (X, 0)) \
911 && CONSTANT_P (XEXP (X, 1)) \
912 && (GET_CODE (XEXP (X, 1)) != CONST_INT \
913 || ((MODE == QImode || INTVAL (XEXP (X, 1)) % 2 == 0) \
914 && CONST_OK_FOR_K (INTVAL (XEXP (X, 1))))) \
915 && GET_MODE_SIZE (MODE) <= GET_MODE_SIZE (word_mode)) \
917 if (special_symbolref_operand (X, MODE) \
918 && (GET_MODE_SIZE (MODE) <= GET_MODE_SIZE (word_mode))) \
920 if (GET_CODE (X) == PLUS \
921 && CONSTANT_ADDRESS_P (XEXP (X, 1)) \
922 && (MODE == QImode || INTVAL (XEXP (X, 1)) % 2 == 0) \
923 && RTX_OK_FOR_BASE_P (XEXP (X, 0))) goto ADDR; \
927 /* Try machine-dependent ways of modifying an illegitimate address
928 to be legitimate. If we find one, return the new, valid address.
929 This macro is used in only one place: `memory_address' in explow.c.
931 OLDX is the address as it was before break_out_memory_refs was called.
932 In some cases it is useful to look at this to decide what needs to be done.
934 MODE and WIN are passed so that this macro can use
935 GO_IF_LEGITIMATE_ADDRESS.
937 It is always safe for this macro to do nothing. It exists to recognize
938 opportunities to optimize the output. */
940 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {}
942 /* Go to LABEL if ADDR (a legitimate address expression)
943 has an effect that depends on the machine mode it is used for. */
945 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) {}
947 /* Nonzero if the constant value X is a legitimate general operand.
948 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
950 #define LEGITIMATE_CONSTANT_P(X) \
951 (GET_CODE (X) == CONST_DOUBLE \
952 || !(GET_CODE (X) == CONST \
953 && GET_CODE (XEXP (X, 0)) == PLUS \
954 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF \
955 && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT \
956 && ! CONST_OK_FOR_K (INTVAL (XEXP (XEXP (X, 0), 1)))))
958 /* In rare cases, correct code generation requires extra machine
959 dependent processing between the second jump optimization pass and
960 delayed branch scheduling. On those machines, define this macro
961 as a C statement to act on the code starting at INSN. */
963 #define MACHINE_DEPENDENT_REORG(INSN) v850_reorg (INSN)
966 /* Tell final.c how to eliminate redundant test instructions. */
968 /* Here we define machine-dependent flags and fields in cc_status
969 (see `conditions.h'). No extra ones are needed for the vax. */
971 /* Store in cc_status the expressions
972 that the condition codes will describe
973 after execution of an instruction whose pattern is EXP.
974 Do not alter them if the instruction would not alter the cc's. */
976 #define CC_OVERFLOW_UNUSABLE 0x200
977 #define CC_NO_CARRY CC_NO_OVERFLOW
978 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
980 /* A part of a C `switch' statement that describes the relative costs
981 of constant RTL expressions. It must contain `case' labels for
982 expression codes `const_int', `const', `symbol_ref', `label_ref'
983 and `const_double'. Each case must ultimately reach a `return'
984 statement to return the relative cost of the use of that kind of
985 constant value in an expression. The cost may depend on the
986 precise value of the constant, which is available for examination
987 in X, and the rtx code of the expression in which it is contained,
990 CODE is the expression code--redundant, since it can be obtained
991 with `GET_CODE (X)'. */
993 #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
1000 int _zxy = const_costs(RTX, CODE); \
1001 return (_zxy) ? COSTS_N_INSNS (_zxy) : 0; \
1004 /* A crude cut at RTX_COSTS for the V850. */
1006 /* Provide the costs of a rtl expression. This is in the body of a
1009 There aren't DImode MOD, DIV or MULT operations, so call them
1010 very expensive. Everything else is pretty much a costant cost. */
1012 #define RTX_COSTS(RTX,CODE,OUTER_CODE) \
1019 /* All addressing modes have the same cost on the V850 series. */
1020 #define ADDRESS_COST(ADDR) 1
1022 /* Nonzero if access to memory by bytes or half words is no faster
1023 than accessing full words. */
1024 #define SLOW_BYTE_ACCESS 1
1026 /* Define this if zero-extension is slow (more than one real instruction). */
1027 #define SLOW_ZERO_EXTEND
1029 /* According expr.c, a value of around 6 should minimize code size, and
1030 for the V850 series, that's our primary concern. */
1031 #define MOVE_RATIO 6
1033 /* Indirect calls are expensive, never turn a direct call
1034 into an indirect call. */
1035 #define NO_FUNCTION_CSE
1037 /* A list of names for sections other than the standard two, which are
1038 `in_text' and `in_data'. You need not define this macro on a
1039 system with no other sections (that GCC needs to use). */
1040 #undef EXTRA_SECTIONS
1041 #define EXTRA_SECTIONS in_tdata, in_sdata, in_zdata, in_const, in_ctors, in_dtors
1043 /* One or more functions to be defined in `varasm.c'. These
1044 functions should do jobs analogous to those of `text_section' and
1045 `data_section', for your additional sections. Do not define this
1046 macro if you do not define `EXTRA_SECTIONS'. */
1047 #undef EXTRA_SECTION_FUNCTIONS
1048 #define EXTRA_SECTION_FUNCTIONS \
1049 CONST_SECTION_FUNCTION \
1050 CTORS_SECTION_FUNCTION \
1051 DTORS_SECTION_FUNCTION \
1056 if (in_section != in_sdata) \
1058 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
1059 in_section = in_sdata; \
1066 if (in_section != in_tdata) \
1068 fprintf (asm_out_file, "%s\n", TDATA_SECTION_ASM_OP); \
1069 in_section = in_tdata; \
1076 if (in_section != in_zdata) \
1078 fprintf (asm_out_file, "%s\n", ZDATA_SECTION_ASM_OP); \
1079 in_section = in_zdata; \
1083 #define TEXT_SECTION_ASM_OP "\t.section .text"
1084 #define DATA_SECTION_ASM_OP "\t.section .data"
1085 #define BSS_SECTION_ASM_OP "\t.section .bss"
1086 #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\""
1087 #define SBSS_SECTION_ASM_OP "\t.section .sbss,\"aw\""
1088 #define ZDATA_SECTION_ASM_OP "\t.section .zdata,\"aw\""
1089 #define ZBSS_SECTION_ASM_OP "\t.section .zbss,\"aw\""
1090 #define TDATA_SECTION_ASM_OP "\t.section .tdata,\"aw\""
1092 /* A C statement or statements to switch to the appropriate section
1093 for output of EXP. You can assume that EXP is either a `VAR_DECL'
1094 node or a constant of some sort. RELOC indicates whether the
1095 initial value of EXP requires link-time relocations. Select the
1096 section by calling `text_section' or one of the alternatives for
1099 Do not define this macro if you put all read-only variables and
1100 constants in the read-only data section (usually the text section). */
1101 #undef SELECT_SECTION
1102 #define SELECT_SECTION(EXP, RELOC) \
1104 if (TREE_CODE (EXP) == VAR_DECL) \
1106 if (!TREE_READONLY (EXP) || TREE_SIDE_EFFECTS (EXP) \
1107 || !DECL_INITIAL (EXP) \
1108 || (DECL_INITIAL (EXP) != error_mark_node \
1109 && !TREE_CONSTANT (DECL_INITIAL (EXP)))) \
1114 else if (TREE_CODE (EXP) == STRING_CST) \
1116 if (! flag_writable_strings) \
1127 /* A C statement or statements to switch to the appropriate section
1128 for output of RTX in mode MODE. You can assume that RTX is some
1129 kind of constant in RTL. The argument MODE is redundant except in
1130 the case of a `const_int' rtx. Select the section by calling
1131 `text_section' or one of the alternatives for other sections.
1133 Do not define this macro if you put all constants in the read-only
1135 /* #define SELECT_RTX_SECTION(MODE, RTX) */
1137 /* Output at beginning/end of assembler file. */
1138 #undef ASM_FILE_START
1139 #define ASM_FILE_START(FILE) asm_file_start(FILE)
1141 #define ASM_COMMENT_START "#"
1143 /* Output to assembler file text saying following lines
1144 may contain character constants, extra white space, comments, etc. */
1146 #define ASM_APP_ON "#APP\n"
1148 /* Output to assembler file text saying following lines
1149 no longer contain unusual constructs. */
1151 #define ASM_APP_OFF "#NO_APP\n"
1153 /* This is how to output an assembler line defining a `double' constant.
1154 It is .double or .float, depending. */
1156 #define ASM_OUTPUT_DOUBLE(FILE, VALUE) \
1157 do { char dstr[30]; \
1158 REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
1159 fprintf (FILE, "\t.double %s\n", dstr); \
1163 /* This is how to output an assembler line defining a `float' constant. */
1164 #define ASM_OUTPUT_FLOAT(FILE, VALUE) \
1165 do { char dstr[30]; \
1166 REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
1167 fprintf (FILE, "\t.float %s\n", dstr); \
1170 /* This is how to output an assembler line defining an `int' constant. */
1172 #define ASM_OUTPUT_INT(FILE, VALUE) \
1173 ( fprintf (FILE, "\t.long "), \
1174 output_addr_const (FILE, (VALUE)), \
1175 fprintf (FILE, "\n"))
1177 /* Likewise for `char' and `short' constants. */
1179 #define ASM_OUTPUT_SHORT(FILE, VALUE) \
1180 ( fprintf (FILE, "\t.hword "), \
1181 output_addr_const (FILE, (VALUE)), \
1182 fprintf (FILE, "\n"))
1184 #define ASM_OUTPUT_CHAR(FILE, VALUE) \
1185 ( fprintf (FILE, "\t.byte "), \
1186 output_addr_const (FILE, (VALUE)), \
1187 fprintf (FILE, "\n"))
1189 /* This is how to output an assembler line for a numeric constant byte. */
1190 #define ASM_OUTPUT_BYTE(FILE, VALUE) \
1191 fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
1193 /* Define the parentheses used to group arithmetic operations
1194 in assembler code. */
1196 #define ASM_OPEN_PAREN "("
1197 #define ASM_CLOSE_PAREN ")"
1199 /* This says how to output the assembler to define a global
1200 uninitialized but not common symbol.
1201 Try to use asm_output_bss to implement this macro. */
1203 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
1204 asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
1206 /* This is how to output the definition of a user-level label named NAME,
1207 such as the label on a static function or variable NAME. */
1209 #define ASM_OUTPUT_LABEL(FILE, NAME) \
1210 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1212 /* This is how to output a command to make the user-level label named NAME
1213 defined for reference from other files. */
1215 #define ASM_GLOBALIZE_LABEL(FILE, NAME) \
1216 do { fputs ("\t.global ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
1218 /* This is how to output a reference to a user-level label named NAME.
1219 `assemble_name' uses this. */
1221 #undef ASM_OUTPUT_LABELREF
1222 #define ASM_OUTPUT_LABELREF(FILE, NAME) \
1225 STRIP_NAME_ENCODING (real_name, (NAME)); \
1226 fprintf (FILE, "_%s", real_name); \
1229 /* Store in OUTPUT a string (made with alloca) containing
1230 an assembler-name for a local static variable named NAME.
1231 LABELNO is an integer which is different for each call. */
1233 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
1234 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
1235 sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))
1237 /* This is how we tell the assembler that two symbols have the same value. */
1239 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
1240 do { assemble_name(FILE, NAME1); \
1241 fputs(" = ", FILE); \
1242 assemble_name(FILE, NAME2); \
1243 fputc('\n', FILE); } while (0)
1246 /* How to refer to registers in assembler output.
1247 This sequence is indexed by compiler's hard-register-number (see above). */
1249 #define REGISTER_NAMES \
1250 { "r0", "r1", "r2", "sp", "gp", "r5", "r6" , "r7", \
1251 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
1252 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
1253 "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31", \
1256 #define ADDITIONAL_REGISTER_NAMES \
1266 /* Print an instruction operand X on file FILE.
1267 look in v850.c for details */
1269 #define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE,X,CODE)
1271 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
1274 /* Print a memory operand whose address is X, on file FILE.
1275 This uses a function in output-vax.c. */
1277 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
1279 #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)
1280 #define ASM_OUTPUT_REG_POP(FILE,REGNO)
1282 /* This is how to output an element of a case-vector that is absolute. */
1284 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1285 asm_fprintf (FILE, "\t%s .L%d\n", \
1286 (TARGET_BIG_SWITCH ? ".long" : ".short"), VALUE)
1288 /* This is how to output an element of a case-vector that is relative. */
1290 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1291 fprintf (FILE, "\t%s .L%d-.L%d\n", \
1292 (TARGET_BIG_SWITCH ? ".long" : ".short"), \
1295 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1297 fprintf (FILE, "\t.align %d\n", (LOG))
1299 /* We don't have to worry about dbx compatability for the v850. */
1300 #define DEFAULT_GDB_EXTENSIONS 1
1302 /* Use stabs debugging info by default. */
1303 #undef PREFERRED_DEBUGGING_TYPE
1304 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1306 #define DBX_REGISTER_NUMBER(REGNO) REGNO
1308 /* Define to use software floating point emulator for REAL_ARITHMETIC and
1309 decimal <-> binary conversion. */
1310 #define REAL_ARITHMETIC
1312 /* Specify the machine mode that this machine uses
1313 for the index in the tablejump instruction. */
1314 #define CASE_VECTOR_MODE (TARGET_BIG_SWITCH ? SImode : HImode)
1316 /* Define this if the case instruction drops through after the table
1317 when the index is out of range. Don't define it if the case insn
1318 jumps to the default label instead. */
1319 /* #define CASE_DROPS_THROUGH */
1321 /* We must use a PC relative entry for small tables. It would be more
1322 efficient to use an absolute entry for big tables, but this is not
1323 a runtime choice yet. */
1324 #define CASE_VECTOR_PC_RELATIVE
1326 /* The switch instruction requires that the jump table immediately follow
1328 #define JUMP_TABLES_IN_TEXT_SECTION
1330 /* svr4.h defines this assuming that 4 byte alignment is required. */
1331 #undef ASM_OUTPUT_BEFORE_CASE_LABEL
1332 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
1333 ASM_OUTPUT_ALIGN ((FILE), (TARGET_BIG_SWITCH ? 2 : 1));
1335 #define WORD_REGISTER_OPERATIONS
1337 /* Byte and short loads sign extend the value to a word. */
1338 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
1340 /* Specify the tree operation to be used to convert reals to integers. */
1341 #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
1343 /* This flag, if defined, says the same insns that convert to a signed fixnum
1344 also convert validly to an unsigned one. */
1345 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC
1347 /* This is the kind of divide that is easiest to do in the general case. */
1348 #define EASY_DIV_EXPR TRUNC_DIV_EXPR
1350 /* Max number of bytes we can move from memory to memory
1351 in one reasonably fast instruction. */
1354 /* Define if shifts truncate the shift count
1355 which implies one can omit a sign-extension or zero-extension
1356 of a shift count. */
1357 #define SHIFT_COUNT_TRUNCATED 1
1359 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1360 is done just by pretending it is already truncated. */
1361 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1363 #define STORE_FLAG_VALUE 1
1365 /* Specify the machine mode that pointers have.
1366 After generation of rtl, the compiler makes no further distinction
1367 between pointers and any other objects of this machine mode. */
1368 #define Pmode SImode
1370 /* A function address in a call instruction
1371 is a byte address (for indexing purposes)
1372 so give the MEM rtx a byte's mode. */
1373 #define FUNCTION_MODE QImode
1375 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
1376 is a valid machine specific attribute for DECL.
1377 The attributes in ATTRIBUTES have previously been assigned to DECL. */
1378 #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
1379 v850_valid_machine_decl_attribute (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
1381 /* Tell compiler we have {ZDA,TDA,SDA} small data regions */
1386 /* Tell compiler we want to support GHS pragmas */
1387 #define HANDLE_GHS_PRAGMA
1389 /* The assembler op to to start the file. */
1391 #define FILE_ASM_OP "\t.file\n"
1393 /* Enable the register move pass to improve code. */
1394 #define ENABLE_REGMOVE_PASS
1397 /* Implement ZDA, TDA, and SDA */
1399 #define EP_REGNUM 30 /* ep register number */
1401 #define ENCODE_SECTION_INFO(DECL) \
1403 if ((TREE_STATIC (DECL) || DECL_EXTERNAL (DECL)) \
1404 && TREE_CODE (DECL) == VAR_DECL) \
1405 v850_encode_data_area (DECL); \
1408 #define ZDA_NAME_FLAG_CHAR '@'
1409 #define TDA_NAME_FLAG_CHAR '%'
1410 #define SDA_NAME_FLAG_CHAR '&'
1412 #define ZDA_NAME_P(NAME) (*(NAME) == ZDA_NAME_FLAG_CHAR)
1413 #define TDA_NAME_P(NAME) (*(NAME) == TDA_NAME_FLAG_CHAR)
1414 #define SDA_NAME_P(NAME) (*(NAME) == SDA_NAME_FLAG_CHAR)
1416 #define ENCODED_NAME_P(SYMBOL_NAME) \
1417 (ZDA_NAME_P (SYMBOL_NAME) \
1418 || TDA_NAME_P (SYMBOL_NAME) \
1419 || SDA_NAME_P (SYMBOL_NAME))
1421 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
1422 (VAR) = (SYMBOL_NAME) + (ENCODED_NAME_P (SYMBOL_NAME) || *(SYMBOL_NAME) == '*')
1424 /* Define this if you have defined special-purpose predicates in the
1425 file `MACHINE.c'. This macro is called within an initializer of an
1426 array of structures. The first field in the structure is the name
1427 of a predicate and the second field is an array of rtl codes. For
1428 each predicate, list all rtl codes that can be in expressions
1429 matched by the predicate. The list should have a trailing comma. */
1431 #define PREDICATE_CODES \
1432 { "ep_memory_operand", { MEM }}, \
1433 { "reg_or_0_operand", { REG, SUBREG, CONST_INT, CONST_DOUBLE }}, \
1434 { "reg_or_int5_operand", { REG, SUBREG, CONST_INT }}, \
1435 { "call_address_operand", { REG, SYMBOL_REF }}, \
1436 { "movsi_source_operand", { LABEL_REF, SYMBOL_REF, CONST_INT, \
1437 CONST_DOUBLE, CONST, HIGH, MEM, \
1439 { "special_symbolref_operand", { SYMBOL_REF }}, \
1440 { "power_of_two_operand", { CONST_INT }}, \
1441 { "pattern_is_ok_for_prologue", { PARALLEL }}, \
1442 { "pattern_is_ok_for_epilogue", { PARALLEL }}, \
1443 { "register_is_ok_for_epilogue",{ REG }}, \
1444 { "not_power_of_two_operand", { CONST_INT }},
1446 extern void override_options ();
1447 extern void asm_file_start ();
1448 extern int function_arg_partial_nregs ();
1449 extern int const_costs ();
1450 extern void print_operand ();
1451 extern void print_operand_address ();
1452 extern char *output_move_double ();
1453 extern char *output_move_single ();
1454 extern int ep_operand ();
1455 extern int reg_or_0_operand ();
1456 extern int reg_or_int5_operand ();
1457 extern int call_address_operand ();
1458 extern int movsi_source_operand ();
1459 extern int power_of_two_operand ();
1460 extern int not_power_of_two_operand ();
1461 extern void v850_reorg ();
1462 extern int compute_register_save_size ();
1463 extern int compute_frame_size ();
1464 extern void expand_prologue ();
1465 extern void expand_epilogue ();
1466 extern void notice_update_cc ();
1467 extern int v850_valid_machine_decl_attribute ();
1468 extern int v850_interrupt_function_p ();
1470 extern int pattern_is_ok_for_prologue();
1471 extern int pattern_is_ok_for_epilogue();
1472 extern int register_is_ok_for_epilogue ();
1473 extern char *construct_save_jarl ();
1474 extern char *construct_restore_jr ();