1 /* Definitions of target machine for GNU compiler. NEC V850 series
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4 Contributed by Jeff Law (law@cygnus.com).
6 This file is part of GCC.
8 GCC 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 3, or (at your option)
13 GCC 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 GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
25 extern GTY(()) rtx v850_compare_op0;
26 extern GTY(()) rtx v850_compare_op1;
29 #define LIB_SPEC "%{!shared:%{!symbolic:--start-group -lc -lgcc --end-group}}"
36 #define TARGET_CPU_generic 1
37 #define TARGET_CPU_v850e 2
38 #define TARGET_CPU_v850e1 3
39 #define TARGET_CPU_v850e2 4
40 #define TARGET_CPU_v850e2v3 5
43 #ifndef TARGET_CPU_DEFAULT
44 #define TARGET_CPU_DEFAULT TARGET_CPU_generic
47 #define MASK_DEFAULT MASK_V850
48 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850}"
49 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850__}"
51 /* Choose which processor will be the default.
52 We must pass a -mv850xx option to the assembler if no explicit -mv* option
53 is given, because the assembler's processor default may not be correct. */
54 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e
56 #define MASK_DEFAULT MASK_V850E
57 #undef SUBTARGET_ASM_SPEC
58 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e}"
59 #undef SUBTARGET_CPP_SPEC
60 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e__}"
63 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e1
65 #define MASK_DEFAULT MASK_V850E /* No practical difference. */
66 #undef SUBTARGET_ASM_SPEC
67 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e1}"
68 #undef SUBTARGET_CPP_SPEC
69 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e1__} %{mv850e1:-D__v850e1__}"
72 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2
74 #define MASK_DEFAULT MASK_V850E2
75 #undef SUBTARGET_ASM_SPEC
76 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2}"
77 #undef SUBTARGET_CPP_SPEC
78 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2__} %{mv850e2:-D__v850e2__}"
81 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2v3
83 #define MASK_DEFAULT MASK_V850E2V3
84 #undef SUBTARGET_ASM_SPEC
85 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2v3}"
86 #undef SUBTARGET_CPP_SPEC
87 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2v3__} %{mv850e2v3:-D__v850e2v3__}"
90 #define TARGET_V850E2_ALL (TARGET_V850E2 || TARGET_V850E2V3)
92 #define ASM_SPEC "%{mv850es:-mv850e1}%{!mv850es:%{mv*:-mv%*}} %{mrelax:-mrelax}"
94 %{mv850e2v3:-D__v850e2v3__} \
95 %{mv850e2:-D__v850e2__} \
96 %{mv850es:-D__v850e1__} \
97 %{mv850e1:-D__v850e1__} \
98 %{mv850e:-D__v850e__} \
100 %(subtarget_cpp_spec)" \
103 #define EXTRA_SPECS \
104 { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \
105 { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }
107 /* Names to predefine in the preprocessor for this target machine. */
108 #define TARGET_CPU_CPP_BUILTINS() do { \
109 builtin_define( "__v851__" ); \
110 builtin_define( "__v850" ); \
111 builtin_assert( "machine=v850" ); \
112 builtin_assert( "cpu=v850" ); \
114 builtin_define ("__EP__"); \
117 #define MASK_CPU (MASK_V850 | MASK_V850E | MASK_V850E1 | MASK_V850E2 | MASK_V850E2V3)
119 /* Target machine storage layout */
121 /* Define this if most significant bit is lowest numbered
122 in instructions that operate on numbered bit-fields.
123 This is not true on the NEC V850. */
124 #define BITS_BIG_ENDIAN 0
126 /* Define this if most significant byte of a word is the lowest numbered. */
127 /* This is not true on the NEC V850. */
128 #define BYTES_BIG_ENDIAN 0
130 /* Define this if most significant word of a multiword number is lowest
132 This is not true on the NEC V850. */
133 #define WORDS_BIG_ENDIAN 0
135 /* Width of a word, in units (bytes). */
136 #define UNITS_PER_WORD 4
138 /* Define this macro if it is advisable to hold scalars in registers
139 in a wider mode than that declared by the program. In such cases,
140 the value is constrained to be within the bounds of the declared
141 type, but kept valid in the wider mode. The signedness of the
142 extension may differ from that of the type.
144 Some simple experiments have shown that leaving UNSIGNEDP alone
145 generates the best overall code. */
147 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
148 if (GET_MODE_CLASS (MODE) == MODE_INT \
149 && GET_MODE_SIZE (MODE) < 4) \
152 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
153 #define PARM_BOUNDARY 32
155 /* The stack goes in 32-bit lumps. */
156 #define STACK_BOUNDARY 32
158 /* Allocation boundary (in *bits*) for the code of a function.
159 16 is the minimum boundary; 32 would give better performance. */
160 #define FUNCTION_BOUNDARY (optimize_size ? 16 : 32)
162 /* No data type wants to be aligned rounder than this. */
163 #define BIGGEST_ALIGNMENT 32
165 /* Alignment of field after `int : 0' in a structure. */
166 #define EMPTY_FIELD_BOUNDARY 32
168 /* No structure field wants to be aligned rounder than this. */
169 #define BIGGEST_FIELD_ALIGNMENT 32
171 /* Define this if move instructions will actually fail to work
172 when given unaligned data. */
173 #define STRICT_ALIGNMENT (!TARGET_NO_STRICT_ALIGN)
175 /* Define this as 1 if `char' should by default be signed; else as 0.
177 On the NEC V850, loads do sign extension, so make this default. */
178 #define DEFAULT_SIGNED_CHAR 1
181 #define SIZE_TYPE "unsigned int"
184 #define PTRDIFF_TYPE "int"
187 #define WCHAR_TYPE "long int"
189 #undef WCHAR_TYPE_SIZE
190 #define WCHAR_TYPE_SIZE BITS_PER_WORD
192 /* Standard register usage. */
194 /* Number of actual hardware registers.
195 The hardware registers are assigned numbers for the compiler
196 from 0 to just below FIRST_PSEUDO_REGISTER.
198 All registers that the compiler knows about must be given numbers,
199 even those that are not normally considered general registers. */
201 #define FIRST_PSEUDO_REGISTER 36
203 /* 1 for registers that have pervasive standard uses
204 and are not available for the register allocator. */
206 #define FIXED_REGISTERS \
207 { 1, 1, 1, 1, 1, 1, 0, 0, \
208 0, 0, 0, 0, 0, 0, 0, 0, \
209 0, 0, 0, 0, 0, 0, 0, 0, \
210 0, 0, 0, 0, 0, 0, 1, 0, \
214 /* 1 for registers not available across function calls.
215 These must include the FIXED_REGISTERS and also any
216 registers that can be used without being saved.
217 The latter must include the registers where values are returned
218 and the register where structure-value addresses are passed.
219 Aside from that, you can include as many other registers as you
222 #define CALL_USED_REGISTERS \
223 { 1, 1, 1, 1, 1, 1, 1, 1, \
224 1, 1, 1, 1, 1, 1, 1, 1, \
225 1, 1, 1, 1, 0, 0, 0, 0, \
226 0, 0, 0, 0, 0, 0, 1, 1, \
230 /* List the order in which to allocate registers. Each register must be
231 listed once, even those in FIXED_REGISTERS.
233 On the 850, we make the return registers first, then all of the volatile
234 registers, then the saved registers in reverse order to better save the
235 registers with an out of line function, and finally the fixed
238 #define REG_ALLOC_ORDER \
240 10, 11, /* return registers */ \
241 12, 13, 14, 15, 16, 17, 18, 19, /* scratch registers */ \
242 6, 7, 8, 9, 31, /* argument registers */ \
243 29, 28, 27, 26, 25, 24, 23, 22, /* saved registers */ \
245 0, 1, 3, 4, 5, 30, 32, 33, /* fixed registers */ \
249 /* Return number of consecutive hard regs needed starting at reg REGNO
250 to hold something of mode MODE.
252 This is ordinarily the length in words of a value of mode MODE
253 but can be less for certain modes in special long registers. */
255 #define HARD_REGNO_NREGS(REGNO, MODE) \
256 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
258 /* Value is 1 if hard register REGNO can hold a value of machine-mode
261 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
262 ((GET_MODE_SIZE (MODE) <= 4) || (((REGNO) & 1) == 0 && (REGNO) != 0))
264 /* Value is 1 if it is a good idea to tie two pseudo registers
265 when one has mode MODE1 and one has mode MODE2.
266 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
267 for any hard reg, then this must be 0 for correct output. */
268 #define MODES_TIEABLE_P(MODE1, MODE2) \
269 (MODE1 == MODE2 || (GET_MODE_SIZE (MODE1) <= 4 && GET_MODE_SIZE (MODE2) <= 4))
272 /* Define the classes of registers for register constraints in the
273 machine description. Also define ranges of constants.
275 One of the classes must always be named ALL_REGS and include all hard regs.
276 If there is more than one class, another class must be named NO_REGS
277 and contain no registers.
279 The name GENERAL_REGS must be the name of a class (or an alias for
280 another name such as ALL_REGS). This is the class of registers
281 that is allowed by "g" or "r" in a register constraint.
282 Also, registers outside this class are allocated only when
283 instructions express preferences for them.
285 The classes must be numbered in nondecreasing order; that is,
286 a larger-numbered class must never be contained completely
287 in a smaller-numbered class.
289 For any two classes, it is very desirable that there be another
290 class that represents their union. */
294 NO_REGS, GENERAL_REGS, EVEN_REGS, ALL_REGS, LIM_REG_CLASSES
297 #define N_REG_CLASSES (int) LIM_REG_CLASSES
299 /* Give names of register classes as strings for dump file. */
301 #define REG_CLASS_NAMES \
302 { "NO_REGS", "GENERAL_REGS", "EVEN_REGS", "ALL_REGS", "LIM_REGS" }
304 /* Define which registers fit in which classes.
305 This is an initializer for a vector of HARD_REG_SET
306 of length N_REG_CLASSES. */
308 #define REG_CLASS_CONTENTS \
310 { 0x00000000,0x0 }, /* NO_REGS */ \
311 { 0xffffffff,0x0 }, /* GENERAL_REGS */ \
312 { 0x55555554,0x0 }, /* EVEN_REGS */ \
313 { 0xffffffff,0x0 }, /* ALL_REGS */ \
316 /* The same information, inverted:
317 Return the class number of the smallest class containing
318 reg number REGNO. This could be a conditional expression
319 or could index an array. */
321 #define REGNO_REG_CLASS(REGNO) ((REGNO == CC_REGNUM || REGNO == FCC_REGNUM) ? NO_REGS : GENERAL_REGS)
323 /* The class value for index registers, and the one for base regs. */
325 #define INDEX_REG_CLASS NO_REGS
326 #define BASE_REG_CLASS GENERAL_REGS
328 /* Macros to check register numbers against specific register classes. */
330 /* These assume that REGNO is a hard or pseudo reg number.
331 They give nonzero only if REGNO is a hard reg of the suitable class
332 or a pseudo reg currently allocated to a suitable hard reg.
333 Since they use reg_renumber, they are safe only once reg_renumber
334 has been allocated, which happens in local-alloc.c. */
336 #define REGNO_OK_FOR_BASE_P(regno) \
337 (((regno) < FIRST_PSEUDO_REGISTER \
338 && (regno) != CC_REGNUM \
339 && (regno) != FCC_REGNUM) \
340 || reg_renumber[regno] >= 0)
342 #define REGNO_OK_FOR_INDEX_P(regno) 0
344 /* Convenience wrappers around insn_const_int_ok_for_constraint. */
346 #define CONST_OK_FOR_I(VALUE) \
347 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_I)
348 #define CONST_OK_FOR_J(VALUE) \
349 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_J)
350 #define CONST_OK_FOR_K(VALUE) \
351 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_K)
352 #define CONST_OK_FOR_L(VALUE) \
353 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_L)
354 #define CONST_OK_FOR_M(VALUE) \
355 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_M)
356 #define CONST_OK_FOR_N(VALUE) \
357 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_N)
358 #define CONST_OK_FOR_O(VALUE) \
359 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_O)
362 /* Stack layout; function entry, exit and calling. */
364 /* Define this if pushing a word on the stack
365 makes the stack pointer a smaller address. */
367 #define STACK_GROWS_DOWNWARD
369 /* Define this to nonzero if the nominal address of the stack frame
370 is at the high-address end of the local variables;
371 that is, each additional local variable allocated
372 goes at a more negative offset in the frame. */
374 #define FRAME_GROWS_DOWNWARD 1
376 /* Offset within stack frame to start allocating local variables at.
377 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
378 first local allocated. Otherwise, it is the offset to the BEGINNING
379 of the first local allocated. */
381 #define STARTING_FRAME_OFFSET 0
383 /* Offset of first parameter from the argument pointer register value. */
384 /* Is equal to the size of the saved fp + pc, even if an fp isn't
385 saved since the value is used before we know. */
387 #define FIRST_PARM_OFFSET(FNDECL) 0
389 /* Specify the registers used for certain standard purposes.
390 The values of these macros are register numbers. */
392 /* Register to use for pushing function arguments. */
393 #define STACK_POINTER_REGNUM SP_REGNUM
395 /* Base register for access to local variables of the function. */
396 #define FRAME_POINTER_REGNUM 34
398 /* Register containing return address from latest function call. */
399 #define LINK_POINTER_REGNUM LP_REGNUM
401 /* On some machines the offset between the frame pointer and starting
402 offset of the automatic variables is not known until after register
403 allocation has been done (for example, because the saved registers
404 are between these two locations). On those machines, define
405 `FRAME_POINTER_REGNUM' the number of a special, fixed register to
406 be used internally until the offset is known, and define
407 `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number
408 used for the frame pointer.
410 You should define this macro only in the very rare circumstances
411 when it is not possible to calculate the offset between the frame
412 pointer and the automatic variables until after register
413 allocation has been completed. When this macro is defined, you
414 must also indicate in your definition of `ELIMINABLE_REGS' how to
415 eliminate `FRAME_POINTER_REGNUM' into either
416 `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'.
418 Do not define this macro if it would be the same as
419 `FRAME_POINTER_REGNUM'. */
420 #undef HARD_FRAME_POINTER_REGNUM
421 #define HARD_FRAME_POINTER_REGNUM 29
423 /* Base register for access to arguments of the function. */
424 #define ARG_POINTER_REGNUM 35
426 /* Register in which static-chain is passed to a function. */
427 #define STATIC_CHAIN_REGNUM 20
429 /* If defined, this macro specifies a table of register pairs used to
430 eliminate unneeded registers that point into the stack frame. If
431 it is not defined, the only elimination attempted by the compiler
432 is to replace references to the frame pointer with references to
435 The definition of this macro is a list of structure
436 initializations, each of which specifies an original and
437 replacement register.
439 On some machines, the position of the argument pointer is not
440 known until the compilation is completed. In such a case, a
441 separate hard register must be used for the argument pointer.
442 This register can be eliminated by replacing it with either the
443 frame pointer or the argument pointer, depending on whether or not
444 the frame pointer has been eliminated.
446 In this case, you might specify:
447 #define ELIMINABLE_REGS \
448 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
449 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
450 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
452 Note that the elimination of the argument pointer with the stack
453 pointer is specified first since that is the preferred elimination. */
455 #define ELIMINABLE_REGS \
456 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
457 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \
458 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
459 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }} \
461 /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It
462 specifies the initial difference between the specified pair of
463 registers. This macro must be defined if `ELIMINABLE_REGS' is
466 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
468 if ((FROM) == FRAME_POINTER_REGNUM) \
469 (OFFSET) = get_frame_size () + crtl->outgoing_args_size; \
470 else if ((FROM) == ARG_POINTER_REGNUM) \
471 (OFFSET) = compute_frame_size (get_frame_size (), (long *)0); \
473 gcc_unreachable (); \
476 /* Keep the stack pointer constant throughout the function. */
477 #define ACCUMULATE_OUTGOING_ARGS 1
479 #define RETURN_ADDR_RTX(COUNT, FP) v850_return_addr (COUNT)
481 /* Define a data type for recording info about an argument list
482 during the scan of that argument list. This data type should
483 hold all necessary information about the function itself
484 and about the args processed so far, enough to enable macros
485 such as FUNCTION_ARG to determine where the next arg should go. */
487 #define CUMULATIVE_ARGS struct cum_arg
488 struct cum_arg { int nbytes; int anonymous_args; };
490 /* Initialize a variable CUM of type CUMULATIVE_ARGS
491 for a call to a function whose data type is FNTYPE.
492 For a library call, FNTYPE is 0. */
494 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
495 ((CUM).nbytes = 0, (CUM).anonymous_args = 0)
497 /* When a parameter is passed in a register, stack space is still
499 #define REG_PARM_STACK_SPACE(DECL) 0
501 /* 1 if N is a possible register number for function argument passing. */
503 #define FUNCTION_ARG_REGNO_P(N) (N >= 6 && N <= 9)
505 /* Define how to find the value returned by a library function
506 assuming the value has mode MODE. */
508 #define LIBCALL_VALUE(MODE) \
509 gen_rtx_REG (MODE, 10)
511 #define DEFAULT_PCC_STRUCT_RETURN 0
513 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
514 the stack pointer does not matter. The value is tested only in
515 functions that have frame pointers.
516 No definition is equivalent to always zero. */
518 #define EXIT_IGNORE_STACK 1
520 /* Define this macro as a C expression that is nonzero for registers
521 used by the epilogue or the `return' pattern. */
523 #define EPILOGUE_USES(REGNO) \
524 (reload_completed && (REGNO) == LINK_POINTER_REGNUM)
526 /* Output assembler code to FILE to increment profiler label # LABELNO
527 for profiling a function entry. */
529 #define FUNCTION_PROFILER(FILE, LABELNO) ;
531 /* Length in units of the trampoline for entering a nested function. */
533 #define TRAMPOLINE_SIZE 24
535 /* Addressing modes, and classification of registers for them. */
538 /* 1 if X is an rtx for a constant that is a valid address. */
540 /* ??? This seems too exclusive. May get better code by accepting more
541 possibilities here, in particular, should accept ZDA_NAME SYMBOL_REFs. */
543 #define CONSTANT_ADDRESS_P(X) constraint_satisfied_p (X, CONSTRAINT_K)
545 /* Maximum number of registers that can appear in a valid memory address. */
547 #define MAX_REGS_PER_ADDRESS 1
549 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
550 and check its validity for a certain class.
551 We have two alternate definitions for each of them.
552 The usual definition accepts all pseudo regs; the other rejects
553 them unless they have been allocated suitable hard regs.
554 The symbol REG_OK_STRICT causes the latter definition to be used.
556 Most source files want to accept pseudo regs in the hope that
557 they will get allocated to the class that the insn wants them to be in.
558 Source files for reload pass need to be strict.
559 After reload, it makes no difference, since pseudo regs have
560 been eliminated by then. */
562 #ifndef REG_OK_STRICT
564 /* Nonzero if X is a hard reg that can be used as an index
565 or if it is a pseudo reg. */
566 #define REG_OK_FOR_INDEX_P(X) 0
567 /* Nonzero if X is a hard reg that can be used as a base reg
568 or if it is a pseudo reg. */
569 #define REG_OK_FOR_BASE_P(X) 1
570 #define REG_OK_FOR_INDEX_P_STRICT(X) 0
571 #define REG_OK_FOR_BASE_P_STRICT(X) REGNO_OK_FOR_BASE_P (REGNO (X))
576 /* Nonzero if X is a hard reg that can be used as an index. */
577 #define REG_OK_FOR_INDEX_P(X) 0
578 /* Nonzero if X is a hard reg that can be used as a base reg. */
579 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
585 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
586 that is a valid memory address for an instruction.
587 The MODE argument is the machine mode for the MEM expression
588 that wants to use this address.
590 The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
591 except for CONSTANT_ADDRESS_P which is actually
592 machine-independent. */
594 /* Accept either REG or SUBREG where a register is valid. */
596 #define RTX_OK_FOR_BASE_P(X) \
597 ((REG_P (X) && REG_OK_FOR_BASE_P (X)) \
598 || (GET_CODE (X) == SUBREG && REG_P (SUBREG_REG (X)) \
599 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
601 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
603 if (RTX_OK_FOR_BASE_P (X)) \
605 if (CONSTANT_ADDRESS_P (X) \
606 && (MODE == QImode || INTVAL (X) % 2 == 0) \
607 && (GET_MODE_SIZE (MODE) <= 4 || INTVAL (X) % 4 == 0)) \
609 if (GET_CODE (X) == LO_SUM \
610 && REG_P (XEXP (X, 0)) \
611 && REG_OK_FOR_BASE_P (XEXP (X, 0)) \
612 && CONSTANT_P (XEXP (X, 1)) \
613 && (GET_CODE (XEXP (X, 1)) != CONST_INT \
614 || ((MODE == QImode || INTVAL (XEXP (X, 1)) % 2 == 0) \
615 && CONST_OK_FOR_K (INTVAL (XEXP (X, 1))))) \
616 && GET_MODE_SIZE (MODE) <= GET_MODE_SIZE (word_mode)) \
618 if (special_symbolref_operand (X, MODE) \
619 && (GET_MODE_SIZE (MODE) <= GET_MODE_SIZE (word_mode))) \
621 if (GET_CODE (X) == PLUS \
622 && RTX_OK_FOR_BASE_P (XEXP (X, 0)) \
623 && constraint_satisfied_p (XEXP (X,1), CONSTRAINT_K) \
624 && ((MODE == QImode || INTVAL (XEXP (X, 1)) % 2 == 0) \
625 && CONST_OK_FOR_K (INTVAL (XEXP (X, 1)) \
626 + (GET_MODE_NUNITS (MODE) * UNITS_PER_WORD)))) \
631 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
632 return the mode to be used for the comparison.
634 For floating-point equality comparisons, CCFPEQmode should be used.
635 VOIDmode should be used in all other cases.
637 For integer comparisons against zero, reduce to CCNOmode or CCZmode if
638 possible, to allow for more combinations. */
640 #define SELECT_CC_MODE(OP, X, Y) v850_select_cc_mode (OP, X, Y)
642 /* Tell final.c how to eliminate redundant test instructions. */
644 /* Here we define machine-dependent flags and fields in cc_status
645 (see `conditions.h'). No extra ones are needed for the VAX. */
647 /* Store in cc_status the expressions
648 that the condition codes will describe
649 after execution of an instruction whose pattern is EXP.
650 Do not alter them if the instruction would not alter the cc's. */
652 #define CC_OVERFLOW_UNUSABLE 0x200
653 #define CC_NO_CARRY CC_NO_OVERFLOW
654 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
656 /* Nonzero if access to memory by bytes or half words is no faster
657 than accessing full words. */
658 #define SLOW_BYTE_ACCESS 1
660 /* According expr.c, a value of around 6 should minimize code size, and
661 for the V850 series, that's our primary concern. */
662 #define MOVE_RATIO(speed) 6
664 /* Indirect calls are expensive, never turn a direct call
665 into an indirect call. */
666 #define NO_FUNCTION_CSE
668 /* The four different data regions on the v850. */
677 #define TEXT_SECTION_ASM_OP "\t.section .text"
678 #define DATA_SECTION_ASM_OP "\t.section .data"
679 #define BSS_SECTION_ASM_OP "\t.section .bss"
680 #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\""
681 #define SBSS_SECTION_ASM_OP "\t.section .sbss,\"aw\""
683 #define SCOMMON_ASM_OP "\t.scomm\t"
684 #define ZCOMMON_ASM_OP "\t.zcomm\t"
685 #define TCOMMON_ASM_OP "\t.tcomm\t"
687 #define ASM_COMMENT_START "#"
689 /* Output to assembler file text saying following lines
690 may contain character constants, extra white space, comments, etc. */
692 #define ASM_APP_ON "#APP\n"
694 /* Output to assembler file text saying following lines
695 no longer contain unusual constructs. */
697 #define ASM_APP_OFF "#NO_APP\n"
699 #undef USER_LABEL_PREFIX
700 #define USER_LABEL_PREFIX "_"
702 /* This says how to output the assembler to define a global
703 uninitialized but not common symbol. */
705 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
706 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
708 #undef ASM_OUTPUT_ALIGNED_BSS
709 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
710 v850_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
712 /* This says how to output the assembler to define a global
713 uninitialized, common symbol. */
714 #undef ASM_OUTPUT_ALIGNED_COMMON
715 #undef ASM_OUTPUT_COMMON
716 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
717 v850_output_common (FILE, DECL, NAME, SIZE, ALIGN)
719 /* This says how to output the assembler to define a local
720 uninitialized symbol. */
721 #undef ASM_OUTPUT_ALIGNED_LOCAL
722 #undef ASM_OUTPUT_LOCAL
723 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
724 v850_output_local (FILE, DECL, NAME, SIZE, ALIGN)
726 /* Globalizing directive for a label. */
727 #define GLOBAL_ASM_OP "\t.global "
729 #define ASM_PN_FORMAT "%s___%lu"
731 /* This is how we tell the assembler that two symbols have the same value. */
733 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
734 do { assemble_name(FILE, NAME1); \
735 fputs(" = ", FILE); \
736 assemble_name(FILE, NAME2); \
737 fputc('\n', FILE); } while (0)
740 /* How to refer to registers in assembler output.
741 This sequence is indexed by compiler's hard-register-number (see above). */
743 #define REGISTER_NAMES \
744 { "r0", "r1", "r2", "sp", "gp", "r5", "r6" , "r7", \
745 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
746 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
747 "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31", \
751 /* Register numbers */
753 #define ADDITIONAL_REGISTER_NAMES \
754 { { "zero", ZERO_REGNUM }, \
763 /* This is how to output an element of a case-vector that is absolute. */
765 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
766 fprintf (FILE, "\t%s .L%d\n", \
767 (TARGET_BIG_SWITCH ? ".long" : ".short"), VALUE)
769 /* This is how to output an element of a case-vector that is relative. */
771 /* Disable the shift, which is for the currently disabled "switch"
772 opcode. Se casesi in v850.md. */
774 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
775 fprintf (FILE, "\t%s %s.L%d-.L%d%s\n", \
776 (TARGET_BIG_SWITCH ? ".long" : ".short"), \
777 (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E || TARGET_V850E2_ALL) ? "(" : ""), \
779 (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E || TARGET_V850E2_ALL) ? ")>>1" : ""))
781 #define ASM_OUTPUT_ALIGN(FILE, LOG) \
783 fprintf (FILE, "\t.align %d\n", (LOG))
785 /* We don't have to worry about dbx compatibility for the v850. */
786 #define DEFAULT_GDB_EXTENSIONS 1
788 /* Use stabs debugging info by default. */
789 #undef PREFERRED_DEBUGGING_TYPE
790 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
792 #define DWARF2_FRAME_INFO 1
793 #define DWARF2_UNWIND_INFO 0
794 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, LINK_POINTER_REGNUM)
795 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LINK_POINTER_REGNUM)
797 /* Specify the machine mode that this machine uses
798 for the index in the tablejump instruction. */
799 #define CASE_VECTOR_MODE (TARGET_BIG_SWITCH ? SImode : HImode)
801 /* Define as C expression which evaluates to nonzero if the tablejump
802 instruction expects the table to contain offsets from the address of the
804 Do not define this if the table should contain absolute addresses. */
805 #define CASE_VECTOR_PC_RELATIVE 1
807 /* The switch instruction requires that the jump table immediately follow
809 #define JUMP_TABLES_IN_TEXT_SECTION (!TARGET_JUMP_TABLES_IN_DATA_SECTION)
811 #undef ASM_OUTPUT_BEFORE_CASE_LABEL
812 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
813 ASM_OUTPUT_ALIGN ((FILE), (TARGET_BIG_SWITCH ? 2 : 1));
815 #define WORD_REGISTER_OPERATIONS
817 /* Byte and short loads sign extend the value to a word. */
818 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
820 /* This flag, if defined, says the same insns that convert to a signed fixnum
821 also convert validly to an unsigned one. */
822 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC
824 /* Max number of bytes we can move from memory to memory
825 in one reasonably fast instruction. */
828 /* Define if shifts truncate the shift count
829 which implies one can omit a sign-extension or zero-extension
831 #define SHIFT_COUNT_TRUNCATED 1
833 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
834 is done just by pretending it is already truncated. */
835 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
837 /* Specify the machine mode that pointers have.
838 After generation of rtl, the compiler makes no further distinction
839 between pointers and any other objects of this machine mode. */
842 /* A function address in a call instruction
843 is a byte address (for indexing purposes)
844 so give the MEM rtx a byte's mode. */
845 #define FUNCTION_MODE QImode
847 /* Tell compiler we want to support GHS pragmas */
848 #define REGISTER_TARGET_PRAGMAS() do { \
849 c_register_pragma ("ghs", "interrupt", ghs_pragma_interrupt); \
850 c_register_pragma ("ghs", "section", ghs_pragma_section); \
851 c_register_pragma ("ghs", "starttda", ghs_pragma_starttda); \
852 c_register_pragma ("ghs", "startsda", ghs_pragma_startsda); \
853 c_register_pragma ("ghs", "startzda", ghs_pragma_startzda); \
854 c_register_pragma ("ghs", "endtda", ghs_pragma_endtda); \
855 c_register_pragma ("ghs", "endsda", ghs_pragma_endsda); \
856 c_register_pragma ("ghs", "endzda", ghs_pragma_endzda); \
859 /* enum GHS_SECTION_KIND is an enumeration of the kinds of sections that
860 can appear in the "ghs section" pragma. These names are used to index
861 into the GHS_default_section_names[] and GHS_current_section_names[]
862 that are defined in v850.c, and so the ordering of each must remain
865 These arrays give the default and current names for each kind of
866 section defined by the GHS pragmas. The current names can be changed
867 by the "ghs section" pragma. If the current names are null, use
868 the default names. Note that the two arrays have different types.
870 For the *normal* section kinds (like .data, .text, etc.) we do not
871 want to explicitly force the name of these sections, but would rather
872 let the linker (or at least the back end) choose the name of the
873 section, UNLESS the user has force a specific name for these section
874 kinds. To accomplish this set the name in ghs_default_section_names
877 enum GHS_section_kind
879 GHS_SECTION_KIND_DEFAULT,
881 GHS_SECTION_KIND_TEXT,
882 GHS_SECTION_KIND_DATA,
883 GHS_SECTION_KIND_RODATA,
884 GHS_SECTION_KIND_BSS,
885 GHS_SECTION_KIND_SDATA,
886 GHS_SECTION_KIND_ROSDATA,
887 GHS_SECTION_KIND_TDATA,
888 GHS_SECTION_KIND_ZDATA,
889 GHS_SECTION_KIND_ROZDATA,
891 COUNT_OF_GHS_SECTION_KINDS /* must be last */
894 /* The following code is for handling pragmas supported by the
895 v850 compiler produced by Green Hills Software. This is at
896 the specific request of a customer. */
898 typedef struct data_area_stack_element
900 struct data_area_stack_element * prev;
901 v850_data_area data_area; /* Current default data area. */
902 } data_area_stack_element;
904 /* Track the current data area set by the
905 data area pragma (which can be nested). */
906 extern data_area_stack_element * data_area_stack;
908 /* Names of the various data areas used on the v850. */
909 extern tree GHS_default_section_names [(int) COUNT_OF_GHS_SECTION_KINDS];
910 extern tree GHS_current_section_names [(int) COUNT_OF_GHS_SECTION_KINDS];
912 /* The assembler op to start the file. */
914 #define FILE_ASM_OP "\t.file\n"
916 /* Enable the register move pass to improve code. */
917 #define ENABLE_REGMOVE_PASS
920 /* Implement ZDA, TDA, and SDA */
922 #define EP_REGNUM 30 /* ep register number */
924 #define SYMBOL_FLAG_ZDA (SYMBOL_FLAG_MACH_DEP << 0)
925 #define SYMBOL_FLAG_TDA (SYMBOL_FLAG_MACH_DEP << 1)
926 #define SYMBOL_FLAG_SDA (SYMBOL_FLAG_MACH_DEP << 2)
927 #define SYMBOL_REF_ZDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_ZDA) != 0)
928 #define SYMBOL_REF_TDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_TDA) != 0)
929 #define SYMBOL_REF_SDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_SDA) != 0)
931 #define TARGET_ASM_INIT_SECTIONS v850_asm_init_sections
933 /* Define this so that the cc1plus will not think that system header files
934 need an implicit 'extern "C" { ... }' assumed. This breaks testing C++
935 in a build directory where the libstdc++ header files are found via a
936 -isystem <path-to-build-dir>. */
937 #define NO_IMPLICIT_EXTERN_C
939 #endif /* ! GCC_V850_H */