1 /* Definitions of target machine for GNU compiler. Vax version.
2 Copyright (C) 1987, 1988, 1991, 1993 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Names to predefine in the preprocessor for this target machine. */
23 #define CPP_PREDEFINES "-Dvax -Dunix"
25 /* If using g-format floating point, alter math.h. */
27 #define CPP_SPEC "%{mg:-DGFLOAT}"
29 /* Choose proper libraries depending on float format.
30 Note that there are no profiling libraries for g-format.
31 Also use -lg for the sake of dbx. */
33 #define LIB_SPEC "%{g:-lg}\
34 %{mg:%{lm:-lmg} -lcg \
35 %{p:%eprofiling not supported with -mg\n}\
36 %{pg:%eprofiling not supported with -mg\n}}\
37 %{!mg:%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
39 /* Print subsidiary information on the compiler version in use. */
41 #define TARGET_VERSION fprintf (stderr, " (vax)");
43 /* Run-time compilation parameters selecting different hardware subsets. */
45 extern int target_flags;
47 /* Macros used in the machine description to test the flags. */
49 /* Nonzero if compiling code that Unix assembler can assemble. */
50 #define TARGET_UNIX_ASM (target_flags & 1)
52 /* Nonzero if compiling with VAX-11 "C" style structure alignment */
53 #define TARGET_VAXC_ALIGNMENT (target_flags & 2)
55 /* Nonzero if compiling with `G'-format floating point */
56 #define TARGET_G_FLOAT (target_flags & 4)
58 /* Macro to define tables used to set the flags.
59 This is a list in braces of pairs in braces,
60 each pair being { "NAME", VALUE }
61 where VALUE is the bits to set or minus the bits to clear.
62 An empty string NAME is used to identify the default VALUE. */
64 #define TARGET_SWITCHES \
67 {"vaxc-alignment", 2}, \
72 { "", TARGET_DEFAULT}}
74 /* Default target_flags if no switches specified. */
76 #ifndef TARGET_DEFAULT
77 #define TARGET_DEFAULT 1
80 /* Target machine storage layout */
82 /* Define for software floating point emulation of VAX format
83 when cross compiling from a non-VAX host. */
84 /* #define REAL_ARITHMETIC */
86 /* Define this if most significant bit is lowest numbered
87 in instructions that operate on numbered bit-fields.
88 This is not true on the vax. */
89 #define BITS_BIG_ENDIAN 0
91 /* Define this if most significant byte of a word is the lowest numbered. */
92 /* That is not true on the vax. */
93 #define BYTES_BIG_ENDIAN 0
95 /* Define this if most significant word of a multiword number is the lowest
97 /* This is not true on the vax. */
98 #define WORDS_BIG_ENDIAN 0
100 /* Number of bits in an addressable storage unit */
101 #define BITS_PER_UNIT 8
103 /* Width in bits of a "word", which is the contents of a machine register.
104 Note that this is not necessarily the width of data type `int';
105 if using 16-bit ints on a 68000, this would still be 32.
106 But on a machine with 16-bit registers, this would be 16. */
107 #define BITS_PER_WORD 32
109 /* Width of a word, in units (bytes). */
110 #define UNITS_PER_WORD 4
112 /* Width in bits of a pointer.
113 See also the macro `Pmode' defined below. */
114 #define POINTER_SIZE 32
116 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
117 #define PARM_BOUNDARY 32
119 /* Allocation boundary (in *bits*) for the code of a function. */
120 #define FUNCTION_BOUNDARY 16
122 /* Alignment of field after `int : 0' in a structure. */
123 #define EMPTY_FIELD_BOUNDARY (TARGET_VAXC_ALIGNMENT ? 8 : 32)
125 /* Every structure's size must be a multiple of this. */
126 #define STRUCTURE_SIZE_BOUNDARY 8
128 /* A bitfield declared as `int' forces `int' alignment for the struct. */
129 #define PCC_BITFIELD_TYPE_MATTERS (! TARGET_VAXC_ALIGNMENT)
131 /* No data type wants to be aligned rounder than this. */
132 #define BIGGEST_ALIGNMENT 32
134 /* No structure field wants to be aligned rounder than this. */
135 #define BIGGEST_FIELD_ALIGNMENT (TARGET_VAXC_ALIGNMENT ? 8 : 32)
137 /* Set this nonzero if move instructions will actually fail to work
138 when given unaligned data. */
139 #define STRICT_ALIGNMENT 0
141 /* Let's keep the stack somewhat aligned. */
142 #define STACK_BOUNDARY 32
144 /* Standard register usage. */
146 /* Number of actual hardware registers.
147 The hardware registers are assigned numbers for the compiler
148 from 0 to just below FIRST_PSEUDO_REGISTER.
149 All registers that the compiler knows about must be given numbers,
150 even those that are not normally considered general registers. */
151 #define FIRST_PSEUDO_REGISTER 16
153 /* 1 for registers that have pervasive standard uses
154 and are not available for the register allocator.
155 On the vax, these are the AP, FP, SP and PC. */
156 #define FIXED_REGISTERS {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}
158 /* 1 for registers not available across function calls.
159 These must include the FIXED_REGISTERS and also any
160 registers that can be used without being saved.
161 The latter must include the registers where values are returned
162 and the register where structure-value addresses are passed.
163 Aside from that, you can include as many other registers as you like. */
164 #define CALL_USED_REGISTERS {1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}
166 /* Return number of consecutive hard regs needed starting at reg REGNO
167 to hold something of mode MODE.
168 This is ordinarily the length in words of a value of mode MODE
169 but can be less for certain modes in special long registers.
170 On the vax, all registers are one word long. */
171 #define HARD_REGNO_NREGS(REGNO, MODE) \
172 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
174 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
175 On the vax, all registers can hold all modes. */
176 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
178 /* Value is 1 if it is a good idea to tie two pseudo registers
179 when one has mode MODE1 and one has mode MODE2.
180 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
181 for any hard reg, then this must be 0 for correct output. */
182 #define MODES_TIEABLE_P(MODE1, MODE2) 1
184 /* Specify the registers used for certain standard purposes.
185 The values of these macros are register numbers. */
187 /* Vax pc is overloaded on a register. */
190 /* Register to use for pushing function arguments. */
191 #define STACK_POINTER_REGNUM 14
193 /* Base register for access to local variables of the function. */
194 #define FRAME_POINTER_REGNUM 13
196 /* Value should be nonzero if functions must have frame pointers.
197 Zero means the frame pointer need not be set up (and parms
198 may be accessed via the stack pointer) in functions that seem suitable.
199 This is computed in `reload', in reload1.c. */
200 #define FRAME_POINTER_REQUIRED 1
202 /* Base register for access to arguments of the function. */
203 #define ARG_POINTER_REGNUM 12
205 /* Register in which static-chain is passed to a function. */
206 #define STATIC_CHAIN_REGNUM 0
208 /* Register in which address to store a structure value
209 is passed to a function. */
210 #define STRUCT_VALUE_REGNUM 1
212 /* Define the classes of registers for register constraints in the
213 machine description. Also define ranges of constants.
215 One of the classes must always be named ALL_REGS and include all hard regs.
216 If there is more than one class, another class must be named NO_REGS
217 and contain no registers.
219 The name GENERAL_REGS must be the name of a class (or an alias for
220 another name such as ALL_REGS). This is the class of registers
221 that is allowed by "g" or "r" in a register constraint.
222 Also, registers outside this class are allocated only when
223 instructions express preferences for them.
225 The classes must be numbered in nondecreasing order; that is,
226 a larger-numbered class must never be contained completely
227 in a smaller-numbered class.
229 For any two classes, it is very desirable that there be another
230 class that represents their union. */
232 /* The vax has only one kind of registers, so NO_REGS and ALL_REGS
233 are the only classes. */
235 enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES };
237 #define N_REG_CLASSES (int) LIM_REG_CLASSES
239 /* Since GENERAL_REGS is the same class as ALL_REGS,
240 don't give it a different class number; just make it an alias. */
242 #define GENERAL_REGS ALL_REGS
244 /* Give names of register classes as strings for dump file. */
246 #define REG_CLASS_NAMES \
247 {"NO_REGS", "ALL_REGS" }
249 /* Define which registers fit in which classes.
250 This is an initializer for a vector of HARD_REG_SET
251 of length N_REG_CLASSES. */
253 #define REG_CLASS_CONTENTS {0, 0xffff}
255 /* The same information, inverted:
256 Return the class number of the smallest class containing
257 reg number REGNO. This could be a conditional expression
258 or could index an array. */
260 #define REGNO_REG_CLASS(REGNO) ALL_REGS
262 /* The class value for index registers, and the one for base regs. */
264 #define INDEX_REG_CLASS ALL_REGS
265 #define BASE_REG_CLASS ALL_REGS
267 /* Get reg_class from a letter such as appears in the machine description. */
269 #define REG_CLASS_FROM_LETTER(C) NO_REGS
271 /* The letters I, J, K, L and M in a register constraint string
272 can be used to stand for particular ranges of immediate operands.
273 This macro defines what the ranges are.
274 C is the letter, and VALUE is a constant value.
275 Return 1 if VALUE is in the range specified by C.
277 `I' is the constant zero. */
279 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
280 ((C) == 'I' ? (VALUE) == 0 \
283 /* Similar, but for floating constants, and defining letters G and H.
284 Here VALUE is the CONST_DOUBLE rtx itself.
286 `G' is a floating-point zero. */
288 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
289 ((C) == 'G' ? ((VALUE) == CONST0_RTX (DFmode) \
290 || (VALUE) == CONST0_RTX (SFmode)) \
293 /* Optional extra constraints for this machine.
295 For the VAX, `Q' means that OP is a MEM that does not have a mode-dependent
298 #define EXTRA_CONSTRAINT(OP, C) \
300 ? GET_CODE (OP) == MEM && ! mode_dependent_address_p (XEXP (OP, 0)) \
303 /* Given an rtx X being reloaded into a reg required to be
304 in class CLASS, return the class of reg to actually use.
305 In general this is just CLASS; but on some machines
306 in some cases it is preferable to use a more restrictive class. */
308 #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
310 /* Return the maximum number of consecutive registers
311 needed to represent mode MODE in a register of class CLASS. */
312 /* On the vax, this is always the size of MODE in words,
313 since all registers are the same size. */
314 #define CLASS_MAX_NREGS(CLASS, MODE) \
315 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
317 /* Stack layout; function entry, exit and calling. */
319 /* Define this if pushing a word on the stack
320 makes the stack pointer a smaller address. */
321 #define STACK_GROWS_DOWNWARD
323 /* Define this if longjmp restores from saved registers
324 rather than from what setjmp saved. */
325 #define LONGJMP_RESTORE_FROM_STACK
327 /* Define this if the nominal address of the stack frame
328 is at the high-address end of the local variables;
329 that is, each additional local variable allocated
330 goes at a more negative offset in the frame. */
331 #define FRAME_GROWS_DOWNWARD
333 /* Offset within stack frame to start allocating local variables at.
334 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
335 first local allocated. Otherwise, it is the offset to the BEGINNING
336 of the first local allocated. */
337 #define STARTING_FRAME_OFFSET 0
339 /* Given an rtx for the address of a frame,
340 return an rtx for the address of the word in the frame
341 that holds the dynamic chain--the previous frame's address. */
342 #define DYNAMIC_CHAIN_ADDRESS(frame) \
343 gen_rtx (PLUS, Pmode, frame, gen_rtx (CONST_INT, VOIDmode, 12))
345 /* If we generate an insn to push BYTES bytes,
346 this says how many the stack pointer really advances by.
347 On the vax, -(sp) pushes only the bytes of the operands. */
348 #define PUSH_ROUNDING(BYTES) (BYTES)
350 /* Offset of first parameter from the argument pointer register value. */
351 #define FIRST_PARM_OFFSET(FNDECL) 4
353 /* Value is the number of bytes of arguments automatically
354 popped when returning from a subroutine call.
355 FUNTYPE is the data type of the function (as a tree),
356 or for a library call it is an identifier node for the subroutine name.
357 SIZE is the number of bytes of arguments passed on the stack.
359 On the Vax, the RET insn always pops all the args for any function. */
361 #define RETURN_POPS_ARGS(FUNTYPE,SIZE) (SIZE)
363 /* Define how to find the value returned by a function.
364 VALTYPE is the data type of the value (as a tree).
365 If the precise function being called is known, FUNC is its FUNCTION_DECL;
366 otherwise, FUNC is 0. */
368 /* On the Vax the return value is in R0 regardless. */
370 #define FUNCTION_VALUE(VALTYPE, FUNC) \
371 gen_rtx (REG, TYPE_MODE (VALTYPE), 0)
373 /* Define how to find the value returned by a library function
374 assuming the value has mode MODE. */
376 /* On the Vax the return value is in R0 regardless. */
378 #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 0)
380 /* Define this if PCC uses the nonreentrant convention for returning
381 structure and union values. */
383 #define PCC_STATIC_STRUCT_RETURN
385 /* 1 if N is a possible register number for a function value.
386 On the Vax, R0 is the only register thus used. */
388 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
390 /* 1 if N is a possible register number for function argument passing.
391 On the Vax, no registers are used in this way. */
393 #define FUNCTION_ARG_REGNO_P(N) 0
395 /* Define a data type for recording info about an argument list
396 during the scan of that argument list. This data type should
397 hold all necessary information about the function itself
398 and about the args processed so far, enough to enable macros
399 such as FUNCTION_ARG to determine where the next arg should go.
401 On the vax, this is a single integer, which is a number of bytes
402 of arguments scanned so far. */
404 #define CUMULATIVE_ARGS int
406 /* Initialize a variable CUM of type CUMULATIVE_ARGS
407 for a call to a function whose data type is FNTYPE.
408 For a library call, FNTYPE is 0.
410 On the vax, the offset starts at 0. */
412 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \
415 /* Update the data in CUM to advance over an argument
416 of mode MODE and data type TYPE.
417 (TYPE is null for libcalls where that information may not be available.) */
419 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
420 ((CUM) += ((MODE) != BLKmode \
421 ? (GET_MODE_SIZE (MODE) + 3) & ~3 \
422 : (int_size_in_bytes (TYPE) + 3) & ~3))
424 /* Define where to put the arguments to a function.
425 Value is zero to push the argument on the stack,
426 or a hard register in which to store the argument.
428 MODE is the argument's machine mode.
429 TYPE is the data type of the argument (as a tree).
430 This is null for libcalls where that information may
432 CUM is a variable of type CUMULATIVE_ARGS which gives info about
433 the preceding args and about the function being called.
434 NAMED is nonzero if this argument is a named parameter
435 (otherwise it is an extra parameter matching an ellipsis). */
437 /* On the vax all args are pushed. */
439 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) 0
441 /* This macro generates the assembly code for function entry.
442 FILE is a stdio stream to output the code to.
443 SIZE is an int: how many units of temporary storage to allocate.
444 Refer to the array `regs_ever_live' to determine which registers
445 to save; `regs_ever_live[I]' is nonzero if register number I
446 is ever used in the function. This macro is responsible for
447 knowing which registers should not be saved even if used. */
449 #define FUNCTION_PROLOGUE(FILE, SIZE) \
450 { register int regno; \
451 register int mask = 0; \
452 extern char call_used_regs[]; \
453 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \
454 if (regs_ever_live[regno] && !call_used_regs[regno]) \
455 mask |= 1 << regno; \
456 fprintf (FILE, "\t.word 0x%x\n", mask); \
457 MAYBE_VMS_FUNCTION_PROLOGUE(FILE) \
458 if ((SIZE) >= 64) fprintf (FILE, "\tmovab %d(sp),sp\n", -SIZE);\
459 else if (SIZE) fprintf (FILE, "\tsubl2 $%d,sp\n", (SIZE)); }
461 /* vms.h redefines this. */
462 #define MAYBE_VMS_FUNCTION_PROLOGUE(FILE)
464 /* Output assembler code to FILE to increment profiler label # LABELNO
465 for profiling a function entry. */
467 #define FUNCTION_PROFILER(FILE, LABELNO) \
468 fprintf (FILE, "\tmovab LP%d,r0\n\tjsb mcount\n", (LABELNO));
470 /* Output assembler code to FILE to initialize this source file's
471 basic block profiling info, if that has not already been done. */
473 #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
474 fprintf (FILE, "\ttstl LPBX0\n\tjneq LPI%d\n\tpushal LPBX0\n\tcalls $1,__bb_init_func\nLPI%d:\n", \
477 /* Output assembler code to FILE to increment the entry-count for
478 the BLOCKNO'th basic block in this source file. This is a real pain in the
479 sphincter on a VAX, since we do not want to change any of the bits in the
480 processor status word. The way it is done here, it is pushed onto the stack
481 before any flags have changed, and then the stack is fixed up to account for
482 the fact that the instruction to restore the flags only reads a word.
483 It may seem a bit clumsy, but at least it works.
486 #define BLOCK_PROFILER(FILE, BLOCKNO) \
487 fprintf (FILE, "\tmovpsl -(sp)\n\tmovw (sp),2(sp)\n\taddl2 $2,sp\n\taddl2 $1,LPBX2+%d\n\tbicpsw $255\n\tbispsw (sp)+\n", \
490 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
491 the stack pointer does not matter. The value is tested only in
492 functions that have frame pointers.
493 No definition is equivalent to always zero. */
495 #define EXIT_IGNORE_STACK 1
497 /* This macro generates the assembly code for function exit,
498 on machines that need it. If FUNCTION_EPILOGUE is not defined
499 then individual return instructions are generated for each
500 return statement. Args are same as for FUNCTION_PROLOGUE. */
502 /* #define FUNCTION_EPILOGUE(FILE, SIZE) */
504 /* Store in the variable DEPTH the initial difference between the
505 frame pointer reg contents and the stack pointer reg contents,
506 as of the start of the function body. This depends on the layout
507 of the fixed parts of the stack frame and on how registers are saved.
509 On the Vax, FRAME_POINTER_REQUIRED is always 1, so the definition of this
510 macro doesn't matter. But it must be defined. */
512 #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0;
514 /* Output assembler code for a block containing the constant parts
515 of a trampoline, leaving space for the variable parts. */
517 /* On the vax, the trampoline contains an entry mask and two instructions:
519 movl $STATIC,r0 (store the functions static chain)
520 jmp *$FUNCTION (jump to function code at address FUNCTION) */
522 #define TRAMPOLINE_TEMPLATE(FILE) \
524 ASM_OUTPUT_SHORT (FILE, const0_rtx); \
525 ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x8fd0)); \
526 ASM_OUTPUT_INT (FILE, const0_rtx); \
527 ASM_OUTPUT_BYTE (FILE, 0x50+STATIC_CHAIN_REGNUM); \
528 ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x9f17)); \
529 ASM_OUTPUT_INT (FILE, const0_rtx); \
532 /* Length in units of the trampoline for entering a nested function. */
534 #define TRAMPOLINE_SIZE 15
536 /* Emit RTL insns to initialize the variable parts of a trampoline.
537 FNADDR is an RTX for the address of the function's pure code.
538 CXT is an RTX for the static chain value for the function. */
540 /* We copy the register-mask from the function's pure code
541 to the start of the trampoline. */
542 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
544 emit_move_insn (gen_rtx (MEM, HImode, TRAMP), \
545 gen_rtx (MEM, HImode, FNADDR)); \
546 emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 4)), CXT);\
547 emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 11)), \
548 plus_constant (FNADDR, 2)); \
551 /* Addressing modes, and classification of registers for them. */
553 #define HAVE_POST_INCREMENT
554 /* #define HAVE_POST_DECREMENT */
556 #define HAVE_PRE_DECREMENT
557 /* #define HAVE_PRE_INCREMENT */
559 /* Macros to check register numbers against specific register classes. */
561 /* These assume that REGNO is a hard or pseudo reg number.
562 They give nonzero only if REGNO is a hard reg of the suitable class
563 or a pseudo reg currently allocated to a suitable hard reg.
564 Since they use reg_renumber, they are safe only once reg_renumber
565 has been allocated, which happens in local-alloc.c. */
567 #define REGNO_OK_FOR_INDEX_P(regno) \
568 ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
569 #define REGNO_OK_FOR_BASE_P(regno) \
570 ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
572 /* Maximum number of registers that can appear in a valid memory address. */
574 #define MAX_REGS_PER_ADDRESS 2
576 /* 1 if X is an rtx for a constant that is a valid address. */
578 #define CONSTANT_ADDRESS_P(X) \
579 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
580 || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \
581 || GET_CODE (X) == HIGH)
583 /* Nonzero if the constant value X is a legitimate general operand.
584 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
586 #define LEGITIMATE_CONSTANT_P(X) 1
588 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
589 and check its validity for a certain class.
590 We have two alternate definitions for each of them.
591 The usual definition accepts all pseudo regs; the other rejects
592 them unless they have been allocated suitable hard regs.
593 The symbol REG_OK_STRICT causes the latter definition to be used.
595 Most source files want to accept pseudo regs in the hope that
596 they will get allocated to the class that the insn wants them to be in.
597 Source files for reload pass need to be strict.
598 After reload, it makes no difference, since pseudo regs have
599 been eliminated by then. */
601 #ifndef REG_OK_STRICT
603 /* Nonzero if X is a hard reg that can be used as an index
604 or if it is a pseudo reg. */
605 #define REG_OK_FOR_INDEX_P(X) 1
606 /* Nonzero if X is a hard reg that can be used as a base reg
607 or if it is a pseudo reg. */
608 #define REG_OK_FOR_BASE_P(X) 1
612 /* Nonzero if X is a hard reg that can be used as an index. */
613 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
614 /* Nonzero if X is a hard reg that can be used as a base reg. */
615 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
619 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
620 that is a valid memory address for an instruction.
621 The MODE argument is the machine mode for the MEM expression
622 that wants to use this address.
624 The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
625 except for CONSTANT_ADDRESS_P which is actually machine-independent. */
627 #ifdef NO_EXTERNAL_INDIRECT_ADDRESS
629 /* Zero if this contains a (CONST (PLUS (SYMBOL_REF) (...))) and the
630 symbol in the SYMBOL_REF is an external symbol. */
632 #define INDIRECTABLE_CONSTANT_P(X) \
633 (! (GET_CODE ((X)) == CONST \
634 && GET_CODE (XEXP ((X), 0)) == PLUS \
635 && GET_CODE (XEXP (XEXP ((X), 0), 0)) == SYMBOL_REF \
636 && SYMBOL_REF_FLAG (XEXP (XEXP ((X), 0), 0))))
638 /* Re-definition of CONSTANT_ADDRESS_P, which is true only when there
639 are no SYMBOL_REFs for external symbols present. */
641 #define INDIRECTABLE_CONSTANT_ADDRESS_P(X) \
642 (GET_CODE (X) == LABEL_REF \
643 || (GET_CODE (X) == SYMBOL_REF && !SYMBOL_REF_FLAG (X)) \
644 || (GET_CODE (X) == CONST && INDIRECTABLE_CONSTANT_P(X)) \
645 || GET_CODE (X) == CONST_INT)
648 /* Non-zero if X is an address which can be indirected. External symbols
649 could be in a sharable image library, so we disallow those. */
651 #define INDIRECTABLE_ADDRESS_P(X) \
652 (INDIRECTABLE_CONSTANT_ADDRESS_P (X) \
653 || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
654 || (GET_CODE (X) == PLUS \
655 && GET_CODE (XEXP (X, 0)) == REG \
656 && REG_OK_FOR_BASE_P (XEXP (X, 0)) \
657 && INDIRECTABLE_CONSTANT_ADDRESS_P (XEXP (X, 1))))
659 #else /* not NO_EXTERNAL_INDIRECT_ADDRESS */
661 #define INDIRECTABLE_CONSTANT_ADDRESS_P(X) CONSTANT_ADDRESS_P(X)
663 /* Non-zero if X is an address which can be indirected. */
664 #define INDIRECTABLE_ADDRESS_P(X) \
665 (CONSTANT_ADDRESS_P (X) \
666 || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
667 || (GET_CODE (X) == PLUS \
668 && GET_CODE (XEXP (X, 0)) == REG \
669 && REG_OK_FOR_BASE_P (XEXP (X, 0)) \
670 && CONSTANT_ADDRESS_P (XEXP (X, 1))))
672 #endif /* not NO_EXTERNAL_INDIRECT_ADDRESS */
674 /* Go to ADDR if X is a valid address not using indexing.
675 (This much is the easy part.) */
676 #define GO_IF_NONINDEXED_ADDRESS(X, ADDR) \
677 { register rtx xfoob = (X); \
678 if (GET_CODE (xfoob) == REG) \
680 extern rtx *reg_equiv_mem; \
681 if (! reload_in_progress \
682 || reg_equiv_mem[REGNO (xfoob)] == 0 \
683 || INDIRECTABLE_ADDRESS_P (reg_equiv_mem[REGNO (xfoob)])) \
686 if (CONSTANT_ADDRESS_P (xfoob)) goto ADDR; \
687 if (INDIRECTABLE_ADDRESS_P (xfoob)) goto ADDR; \
688 xfoob = XEXP (X, 0); \
689 if (GET_CODE (X) == MEM && INDIRECTABLE_ADDRESS_P (xfoob)) \
691 if ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC) \
692 && GET_CODE (xfoob) == REG && REG_OK_FOR_BASE_P (xfoob)) \
695 /* 1 if PROD is either a reg times size of mode MODE
696 or just a reg, if MODE is just one byte.
697 This macro's expansion uses the temporary variables xfoo0 and xfoo1
698 that must be declared in the surrounding context. */
699 #define INDEX_TERM_P(PROD, MODE) \
700 (GET_MODE_SIZE (MODE) == 1 \
701 ? (GET_CODE (PROD) == REG && REG_OK_FOR_BASE_P (PROD)) \
702 : (GET_CODE (PROD) == MULT \
704 (xfoo0 = XEXP (PROD, 0), xfoo1 = XEXP (PROD, 1), \
705 ((GET_CODE (xfoo0) == CONST_INT \
706 && INTVAL (xfoo0) == GET_MODE_SIZE (MODE) \
707 && GET_CODE (xfoo1) == REG \
708 && REG_OK_FOR_INDEX_P (xfoo1)) \
710 (GET_CODE (xfoo1) == CONST_INT \
711 && INTVAL (xfoo1) == GET_MODE_SIZE (MODE) \
712 && GET_CODE (xfoo0) == REG \
713 && REG_OK_FOR_INDEX_P (xfoo0))))))
715 /* Go to ADDR if X is the sum of a register
716 and a valid index term for mode MODE. */
717 #define GO_IF_REG_PLUS_INDEX(X, MODE, ADDR) \
718 { register rtx xfooa; \
719 if (GET_CODE (X) == PLUS) \
720 { if (GET_CODE (XEXP (X, 0)) == REG \
721 && REG_OK_FOR_BASE_P (XEXP (X, 0)) \
722 && (xfooa = XEXP (X, 1), \
723 INDEX_TERM_P (xfooa, MODE))) \
725 if (GET_CODE (XEXP (X, 1)) == REG \
726 && REG_OK_FOR_BASE_P (XEXP (X, 1)) \
727 && (xfooa = XEXP (X, 0), \
728 INDEX_TERM_P (xfooa, MODE))) \
731 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
732 { register rtx xfoo, xfoo0, xfoo1; \
733 GO_IF_NONINDEXED_ADDRESS (X, ADDR); \
734 if (GET_CODE (X) == PLUS) \
735 { /* Handle <address>[index] represented with index-sum outermost */\
736 xfoo = XEXP (X, 0); \
737 if (INDEX_TERM_P (xfoo, MODE)) \
738 { GO_IF_NONINDEXED_ADDRESS (XEXP (X, 1), ADDR); } \
739 xfoo = XEXP (X, 1); \
740 if (INDEX_TERM_P (xfoo, MODE)) \
741 { GO_IF_NONINDEXED_ADDRESS (XEXP (X, 0), ADDR); } \
742 /* Handle offset(reg)[index] with offset added outermost */ \
743 if (INDIRECTABLE_CONSTANT_ADDRESS_P (XEXP (X, 0))) \
744 { if (GET_CODE (XEXP (X, 1)) == REG \
745 && REG_OK_FOR_BASE_P (XEXP (X, 1))) \
747 GO_IF_REG_PLUS_INDEX (XEXP (X, 1), MODE, ADDR); } \
748 if (INDIRECTABLE_CONSTANT_ADDRESS_P (XEXP (X, 1))) \
749 { if (GET_CODE (XEXP (X, 0)) == REG \
750 && REG_OK_FOR_BASE_P (XEXP (X, 0))) \
752 GO_IF_REG_PLUS_INDEX (XEXP (X, 0), MODE, ADDR); } } }
754 /* Try machine-dependent ways of modifying an illegitimate address
755 to be legitimate. If we find one, return the new, valid address.
756 This macro is used in only one place: `memory_address' in explow.c.
758 OLDX is the address as it was before break_out_memory_refs was called.
759 In some cases it is useful to look at this to decide what needs to be done.
761 MODE and WIN are passed so that this macro can use
762 GO_IF_LEGITIMATE_ADDRESS.
764 It is always safe for this macro to do nothing. It exists to recognize
765 opportunities to optimize the output.
767 For the vax, nothing needs to be done. */
769 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {}
771 /* Go to LABEL if ADDR (a legitimate address expression)
772 has an effect that depends on the machine mode it is used for.
773 On the VAX, the predecrement and postincrement address depend thus
774 (the amount of decrement or increment being the length of the operand)
775 and all indexed address depend thus (because the index scale factor
776 is the length of the operand). */
777 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
778 { if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) \
780 if (GET_CODE (ADDR) == PLUS) \
781 { if (CONSTANT_ADDRESS_P (XEXP (ADDR, 0)) \
782 && GET_CODE (XEXP (ADDR, 1)) == REG); \
783 else if (CONSTANT_ADDRESS_P (XEXP (ADDR, 1)) \
784 && GET_CODE (XEXP (ADDR, 0)) == REG); \
787 /* Specify the machine mode that this machine uses
788 for the index in the tablejump instruction. */
789 #define CASE_VECTOR_MODE HImode
791 /* Define this if the case instruction expects the table
792 to contain offsets from the address of the table.
793 Do not define this if the table should contain absolute addresses. */
794 #define CASE_VECTOR_PC_RELATIVE
796 /* Define this if the case instruction drops through after the table
797 when the index is out of range. Don't define it if the case insn
798 jumps to the default label instead. */
799 #define CASE_DROPS_THROUGH
801 /* Specify the tree operation to be used to convert reals to integers. */
802 #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
804 /* This is the kind of divide that is easiest to do in the general case. */
805 #define EASY_DIV_EXPR TRUNC_DIV_EXPR
807 /* Define this as 1 if `char' should by default be signed; else as 0. */
808 #define DEFAULT_SIGNED_CHAR 1
810 /* This flag, if defined, says the same insns that convert to a signed fixnum
811 also convert validly to an unsigned one. */
812 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC
814 /* Max number of bytes we can move from memory to memory
815 in one reasonably fast instruction. */
818 /* Define this if zero-extension is slow (more than one real instruction). */
819 /* #define SLOW_ZERO_EXTEND */
821 /* Nonzero if access to memory by bytes is slow and undesirable. */
822 #define SLOW_BYTE_ACCESS 0
824 /* Define if shifts truncate the shift count
825 which implies one can omit a sign-extension or zero-extension
827 /* #define SHIFT_COUNT_TRUNCATED */
829 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
830 is done just by pretending it is already truncated. */
831 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
833 /* Specify the machine mode that pointers have.
834 After generation of rtl, the compiler makes no further distinction
835 between pointers and any other objects of this machine mode. */
838 /* A function address in a call instruction
839 is a byte address (for indexing purposes)
840 so give the MEM rtx a byte's mode. */
841 #define FUNCTION_MODE QImode
843 /* This machine doesn't use IEEE floats. */
845 #define TARGET_FLOAT_FORMAT VAX_FLOAT_FORMAT
847 /* Compute the cost of computing a constant rtl expression RTX
848 whose rtx-code is CODE. The body of this macro is a portion
849 of a switch statement. If the code is computed here,
850 return it with a return statement. Otherwise, break from the switch. */
852 /* On a VAX, constants from 0..63 are cheap because they can use the
853 1 byte literal constant format. compare to -1 should be made cheap
854 so that decrement-and-branch insns can be formed more easily (if
855 the value -1 is copied to a register some decrement-and-branch patterns
858 #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
860 if (INTVAL (RTX) == 0) return 0; \
861 if ((OUTER_CODE) == AND) \
862 return ((unsigned) ~INTVAL (RTX) <= 077) ? 1 : 2; \
863 if ((unsigned) INTVAL (RTX) <= 077) return 1; \
864 if ((OUTER_CODE) == COMPARE && INTVAL (RTX) == -1) \
866 if ((OUTER_CODE) == PLUS && (unsigned) -INTVAL (RTX) <= 077)\
873 if (GET_MODE_CLASS (GET_MODE (RTX)) == MODE_FLOAT) \
874 return vax_float_literal (RTX) ? 5 : 8; \
876 return (((CONST_DOUBLE_HIGH (RTX) == 0 \
877 && (unsigned) CONST_DOUBLE_LOW (RTX) < 64) \
878 || ((OUTER_CODE) == PLUS \
879 && CONST_DOUBLE_HIGH (RTX) == -1 \
880 && (unsigned)-CONST_DOUBLE_LOW (RTX) < 64)) \
883 #define RTX_COSTS(RTX,CODE,OUTER_CODE) case FIX: case FLOAT: \
884 case MULT: case DIV: case UDIV: case MOD: case UMOD: \
885 case LSHIFT: case ASHIFT: case LSHIFTRT: case ASHIFTRT: \
886 case ROTATE: case ROTATERT: case PLUS: case MINUS: case IOR: \
887 case XOR: case AND: case NEG: case NOT: case ZERO_EXTRACT: \
888 case SIGN_EXTRACT: case MEM: return vax_rtx_cost(RTX)
890 #define ADDRESS_COST(RTX) (1 + (GET_CODE (RTX) == REG ? 0 : vax_address_cost(RTX)))
892 /* Specify the cost of a branch insn; roughly the number of extra insns that
893 should be added to avoid a branch.
895 Branches are extremely cheap on the VAX while the shift insns often
896 used to replace branches can be expensive. */
898 #define BRANCH_COST 0
901 * We can use the BSD C library routines for the libgcc calls that are
902 * still generated, since that's what they boil down to anyways.
905 #define UDIVSI3_LIBCALL "*udiv"
906 #define UMODSI3_LIBCALL "*urem"
908 /* Check a `double' value for validity for a particular machine mode. */
910 /* note that it is very hard to accidentally create a number that fits in a
911 double but not in a float, since their ranges are almost the same */
913 #define CHECK_FLOAT_VALUE(mode, d) (check_float_value (mode, &d))
915 /* For future reference:
916 D Float: 9 bit, sign magnitude, excess 128 binary exponent
917 normalized 56 bit fraction, redundant bit not represented
918 approximately 16 decimal digits of precision
920 The values to use if we trust decimal to binary conversions:
921 #define MAX_D_FLOAT 1.7014118346046923e+38
922 #define MIN_D_FLOAT .29387358770557188e-38
924 G float: 12 bit, sign magnitude, excess 1024 binary exponent
925 normalized 53 bit fraction, redundant bit not represented
926 approximately 15 decimal digits precision
928 The values to use if we trust decimal to binary conversions:
929 #define MAX_G_FLOAT .898846567431157e+308
930 #define MIN_G_FLOAT .556268464626800e-308
933 /* Tell final.c how to eliminate redundant test instructions. */
935 /* Here we define machine-dependent flags and fields in cc_status
936 (see `conditions.h'). No extra ones are needed for the vax. */
938 /* Store in cc_status the expressions
939 that the condition codes will describe
940 after execution of an instruction whose pattern is EXP.
941 Do not alter them if the instruction would not alter the cc's. */
943 #define NOTICE_UPDATE_CC(EXP, INSN) \
944 { if (GET_CODE (EXP) == SET) \
945 { if (GET_CODE (SET_SRC (EXP)) == CALL) \
947 else if (GET_CODE (SET_DEST (EXP)) != PC) \
948 { cc_status.flags = 0; \
949 cc_status.value1 = SET_DEST (EXP); \
950 cc_status.value2 = SET_SRC (EXP); } } \
951 else if (GET_CODE (EXP) == PARALLEL \
952 && GET_CODE (XVECEXP (EXP, 0, 0)) == SET) \
954 if (GET_CODE (SET_SRC (XVECEXP (EXP, 0, 0))) == CALL) \
956 else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) != PC) \
957 { cc_status.flags = 0; \
958 cc_status.value1 = SET_DEST (XVECEXP (EXP, 0, 0)); \
959 cc_status.value2 = SET_SRC (XVECEXP (EXP, 0, 0)); } } \
960 /* PARALLELs whose first element sets the PC are aob, sob insns. \
961 They do change the cc's. So drop through and forget the cc's. */ \
962 else CC_STATUS_INIT; \
963 if (cc_status.value1 && GET_CODE (cc_status.value1) == REG \
964 && cc_status.value2 \
965 && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \
966 cc_status.value2 = 0; \
967 if (cc_status.value1 && GET_CODE (cc_status.value1) == MEM \
968 && cc_status.value2 \
969 && GET_CODE (cc_status.value2) == MEM) \
970 cc_status.value2 = 0; }
971 /* Actual condition, one line up, should be that value2's address
972 depends on value1, but that is too much of a pain. */
974 #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \
975 { if (cc_status.flags & CC_NO_OVERFLOW) \
979 /* Control the assembler format that we output. */
981 /* Output at beginning of assembler file. */
983 #define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n");
985 /* Output to assembler file text saying following lines
986 may contain character constants, extra white space, comments, etc. */
988 #define ASM_APP_ON "#APP\n"
990 /* Output to assembler file text saying following lines
991 no longer contain unusual constructs. */
993 #define ASM_APP_OFF "#NO_APP\n"
995 /* Output before read-only data. */
997 #define TEXT_SECTION_ASM_OP ".text"
999 /* Output before writable data. */
1001 #define DATA_SECTION_ASM_OP ".data"
1003 /* How to refer to registers in assembler output.
1004 This sequence is indexed by compiler's hard-register-number (see above). */
1006 #define REGISTER_NAMES \
1007 {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \
1008 "r9", "r10", "r11", "ap", "fp", "sp", "pc"}
1010 /* This is BSD, so it wants DBX format. */
1012 #define DBX_DEBUGGING_INFO
1014 /* How to renumber registers for dbx and gdb.
1015 Vax needs no change in the numeration. */
1017 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1019 /* Do not break .stabs pseudos into continuations. */
1021 #define DBX_CONTIN_LENGTH 0
1023 /* This is the char to use for continuation (in case we need to turn
1024 continuation back on). */
1026 #define DBX_CONTIN_CHAR '?'
1028 /* Don't use the `xsfoo;' construct in DBX output; this system
1029 doesn't support it. */
1031 #define DBX_NO_XREFS
1033 /* Output the .stabs for a C `static' variable in the data section. */
1034 #define DBX_STATIC_STAB_DATA_SECTION
1036 /* Vax specific: which type character is used for type double? */
1038 #define ASM_DOUBLE_CHAR (TARGET_G_FLOAT ? 'g' : 'd')
1040 /* This is how to output the definition of a user-level label named NAME,
1041 such as the label on a static function or variable NAME. */
1043 #define ASM_OUTPUT_LABEL(FILE,NAME) \
1044 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1046 /* This is how to output a command to make the user-level label named NAME
1047 defined for reference from other files. */
1049 #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
1050 do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
1052 /* This is how to output a reference to a user-level label named NAME. */
1054 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
1055 fprintf (FILE, "_%s", NAME)
1057 /* This is how to output an internal numbered label where
1058 PREFIX is the class of label and NUM is the number within the class. */
1060 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1061 fprintf (FILE, "%s%d:\n", PREFIX, NUM)
1063 /* This is how to store into the string LABEL
1064 the symbol_ref name of an internal numbered label where
1065 PREFIX is the class of label and NUM is the number within the class.
1066 This is suitable for output with `assemble_name'. */
1068 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1069 sprintf (LABEL, "*%s%d", PREFIX, NUM)
1071 /* This is how to output an assembler line defining a `double' constant.
1072 It is .dfloat or .gfloat, depending. */
1074 #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
1075 do { char dstr[30]; \
1076 REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", dstr); \
1077 fprintf (FILE, "\t.%cfloat 0%c%s\n", ASM_DOUBLE_CHAR, \
1078 ASM_DOUBLE_CHAR, dstr); \
1081 /* This is how to output an assembler line defining a `float' constant. */
1083 #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
1084 do { char dstr[30]; \
1085 REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", dstr); \
1086 fprintf (FILE, "\t.float 0f%s\n", dstr); } while (0);
1088 /* This is how to output an assembler line defining an `int' constant. */
1090 #define ASM_OUTPUT_INT(FILE,VALUE) \
1091 ( fprintf (FILE, "\t.long "), \
1092 output_addr_const (FILE, (VALUE)), \
1093 fprintf (FILE, "\n"))
1095 /* Likewise for `char' and `short' constants. */
1097 #define ASM_OUTPUT_SHORT(FILE,VALUE) \
1098 ( fprintf (FILE, "\t.word "), \
1099 output_addr_const (FILE, (VALUE)), \
1100 fprintf (FILE, "\n"))
1102 #define ASM_OUTPUT_CHAR(FILE,VALUE) \
1103 ( fprintf (FILE, "\t.byte "), \
1104 output_addr_const (FILE, (VALUE)), \
1105 fprintf (FILE, "\n"))
1107 /* This is how to output an assembler line for a numeric constant byte. */
1109 #define ASM_OUTPUT_BYTE(FILE,VALUE) \
1110 fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
1112 /* This is how to output an insn to push a register on the stack.
1113 It need not be very fast code. */
1115 #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
1116 fprintf (FILE, "\tpushl %s\n", reg_names[REGNO])
1118 /* This is how to output an insn to pop a register from the stack.
1119 It need not be very fast code. */
1121 #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
1122 fprintf (FILE, "\tmovl (sp)+,%s\n", reg_names[REGNO])
1124 /* This is how to output an element of a case-vector that is absolute.
1125 (The Vax does not use such vectors,
1126 but we must define this macro anyway.) */
1128 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1129 fprintf (FILE, "\t.long L%d\n", VALUE)
1131 /* This is how to output an element of a case-vector that is relative. */
1133 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1134 fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)
1136 /* This is how to output an assembler line
1137 that says to advance the location counter
1138 to a multiple of 2**LOG bytes. */
1140 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1141 fprintf (FILE, "\t.align %d\n", (LOG))
1143 /* This is how to output an assembler line
1144 that says to advance the location counter by SIZE bytes. */
1146 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1147 fprintf (FILE, "\t.space %u\n", (SIZE))
1149 /* This says how to output an assembler line
1150 to define a global common symbol. */
1152 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1153 ( fputs (".comm ", (FILE)), \
1154 assemble_name ((FILE), (NAME)), \
1155 fprintf ((FILE), ",%u\n", (ROUNDED)))
1157 /* This says how to output an assembler line
1158 to define a local common symbol. */
1160 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1161 ( fputs (".lcomm ", (FILE)), \
1162 assemble_name ((FILE), (NAME)), \
1163 fprintf ((FILE), ",%u\n", (ROUNDED)))
1165 /* Store in OUTPUT a string (made with alloca) containing
1166 an assembler-name for a local static variable named NAME.
1167 LABELNO is an integer which is different for each call. */
1169 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
1170 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
1171 sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
1173 /* Define the parentheses used to group arithmetic operations
1174 in assembler code. */
1176 #define ASM_OPEN_PAREN "("
1177 #define ASM_CLOSE_PAREN ")"
1179 /* Define results of standard character escape sequences. */
1180 #define TARGET_BELL 007
1181 #define TARGET_BS 010
1182 #define TARGET_TAB 011
1183 #define TARGET_NEWLINE 012
1184 #define TARGET_VT 013
1185 #define TARGET_FF 014
1186 #define TARGET_CR 015
1188 /* Print an instruction operand X on file FILE.
1189 CODE is the code from the %-spec that requested printing this operand;
1190 if `%z3' was used to print operand 3, then CODE is 'z'.
1192 VAX operand formatting codes:
1195 C reverse branch condition
1196 D 64-bit immediate operand
1197 B the low 8 bits of the complement of a constant operand
1198 H the low 16 bits of the complement of a constant operand
1199 M a mask for the N highest bits of a word
1200 N the complement of a constant integer operand
1201 P constant operand plus 1
1202 R 32 - constant operand
1203 b the low 8 bits of a negated constant operand
1204 h the low 16 bits of a negated constant operand
1205 # 'd' or 'g' depending on whether dfloat or gfloat is used */
1207 /* The purpose of D is to get around a quirk or bug in vax assembler
1208 whereby -1 in a 64-bit immediate operand means 0x00000000ffffffff,
1209 which is not a 64-bit minus one. */
1211 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
1214 #define PRINT_OPERAND(FILE, X, CODE) \
1215 { extern char *rev_cond_name (); \
1216 if (CODE == '#') fputc (ASM_DOUBLE_CHAR, FILE); \
1217 else if (CODE == 'C') \
1218 fputs (rev_cond_name (X), FILE); \
1219 else if (CODE == 'D' && GET_CODE (X) == CONST_INT && INTVAL (X) < 0) \
1220 fprintf (FILE, "$0xffffffff%08x", INTVAL (X)); \
1221 else if (CODE == 'P' && GET_CODE (X) == CONST_INT) \
1222 fprintf (FILE, "$%d", INTVAL (X) + 1); \
1223 else if (CODE == 'N' && GET_CODE (X) == CONST_INT) \
1224 fprintf (FILE, "$%d", ~ INTVAL (X)); \
1225 /* rotl instruction cannot deal with negative arguments. */ \
1226 else if (CODE == 'R' && GET_CODE (X) == CONST_INT) \
1227 fprintf (FILE, "$%d", 32 - INTVAL (X)); \
1228 else if (CODE == 'H' && GET_CODE (X) == CONST_INT) \
1229 fprintf (FILE, "$%d", 0xffff & ~ INTVAL (X)); \
1230 else if (CODE == 'h' && GET_CODE (X) == CONST_INT) \
1231 fprintf (FILE, "$%d", (short) - INTVAL (x)); \
1232 else if (CODE == 'B' && GET_CODE (X) == CONST_INT) \
1233 fprintf (FILE, "$%d", 0xff & ~ INTVAL (X)); \
1234 else if (CODE == 'b' && GET_CODE (X) == CONST_INT) \
1235 fprintf (FILE, "$%d", 0xff & - INTVAL (X)); \
1236 else if (CODE == 'M' && GET_CODE (X) == CONST_INT) \
1237 fprintf (FILE, "$%d", ~((1 << INTVAL (x)) - 1)); \
1238 else if (GET_CODE (X) == REG) \
1239 fprintf (FILE, "%s", reg_names[REGNO (X)]); \
1240 else if (GET_CODE (X) == MEM) \
1241 output_address (XEXP (X, 0)); \
1242 else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
1243 { REAL_VALUE_TYPE r; char dstr[30]; \
1244 REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
1245 REAL_VALUE_TO_DECIMAL (r, "%.20e", dstr); \
1246 fprintf (FILE, "$0f%s", dstr); } \
1247 else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == DFmode) \
1248 { REAL_VALUE_TYPE r; char dstr[30]; \
1249 REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
1250 REAL_VALUE_TO_DECIMAL (r, "%.20e", dstr); \
1251 fprintf (FILE, "$0%c%s", ASM_DOUBLE_CHAR, dstr); } \
1252 else { putc ('$', FILE); output_addr_const (FILE, X); }}
1254 /* Print a memory operand whose address is X, on file FILE.
1255 This uses a function in output-vax.c. */
1257 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
1258 print_operand_address (FILE, ADDR)