1 /* Definitions of target machine for GNU compiler, for IBM S/390
2 Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Hartmut Penner (hpenner@de.ibm.com) and
4 Ulrich Weigand (uweigand@de.ibm.com).
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
27 /* Run-time compilation parameters selecting different hardware subsets. */
29 extern int target_flags
;
31 /* Target macros checked at runtime of compiler. */
33 #define TARGET_HARD_FLOAT (target_flags & 1)
34 #define TARGET_SOFT_FLOAT (!(target_flags & 1))
35 #define TARGET_BACKCHAIN (target_flags & 2)
36 #define TARGET_SMALL_EXEC (target_flags & 4)
37 #define TARGET_DEBUG_ARG (target_flags & 8)
38 #define TARGET_64BIT (target_flags & 16)
39 #define TARGET_MVCLE (target_flags & 32)
41 #ifdef DEFAULT_TARGET_64BIT
42 #define TARGET_DEFAULT 0x13
43 #define TARGET_VERSION fprintf (stderr, " (zSeries)");
45 #define TARGET_DEFAULT 0x3
46 #define TARGET_VERSION fprintf (stderr, " (S/390)");
50 /* Macro to define tables used to set the flags. This is a list in braces
51 of pairs in braces, each pair being { "NAME", VALUE }
52 where VALUE is the bits to set or minus the bits to clear.
53 An empty string NAME is used to identify the default VALUE. */
55 #define TARGET_SWITCHES \
56 { { "hard-float", 1, N_("Use hardware fp")}, \
57 { "soft-float", -1, N_("Don't use hardware fp")}, \
58 { "backchain", 2, N_("Set backchain")}, \
59 { "no-backchain", -2, N_("Don't set backchain (faster, but debug harder")}, \
60 { "small-exec", 4, N_("Use bras for execucable < 64k")}, \
61 { "no-small-exec",-4, N_("Don't use bras")}, \
62 { "debug", 8, N_("Additional debug prints")}, \
63 { "no-debug", -8, N_("Don't print additional debug prints")}, \
64 { "64", 16, N_("64 bit mode")}, \
65 { "31", -16, N_("31 bit mode")}, \
66 { "mvcle", 32, N_("mvcle use")}, \
67 { "no-mvcle", -32, N_("mvc&ex")}, \
68 { "", TARGET_DEFAULT, 0 } }
70 /* Define this to change the optimizations performed by default. */
71 #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) optimization_options(LEVEL, SIZE)
73 /* Sometimes certain combinations of command options do not make sense
74 on a particular target machine. You can define a macro
75 `OVERRIDE_OPTIONS' to take account of this. This macro, if
76 defined, is executed once just after all the command options have
78 #define OVERRIDE_OPTIONS override_options ()
81 /* Defines for REAL_ARITHMETIC. */
83 #define TARGET_IBM_FLOAT 0
84 #define TARGET_IEEE_FLOAT 1
86 /* The current function count for create unique internal labels. */
88 extern int s390_function_count
;
90 /* The amount of space used for outgoing arguments. */
92 extern int current_function_outgoing_args_size
;
94 /* Target machine storage layout. */
96 /* Define this if most significant bit is lowest numbered in instructions
97 that operate on numbered bit-fields. */
99 #define BITS_BIG_ENDIAN 1
101 /* Define this if most significant byte of a word is the lowest numbered. */
103 #define BYTES_BIG_ENDIAN 1
105 /* Define this if MS word of a multiword is the lowest numbered. */
107 #define WORDS_BIG_ENDIAN 1
109 /* Number of bits in an addressable storage unit. */
111 #define BITS_PER_UNIT 8
113 /* Width in bits of a "word", which is the contents of a machine register. */
115 #define BITS_PER_WORD (TARGET_64BIT ? 64 : 32)
116 #define MAX_BITS_PER_WORD 64
118 /* Width of a word, in units (bytes). */
120 #define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4)
121 #define MIN_UNITS_PER_WORD 4
123 /* Width in bits of a pointer. See also the macro `Pmode' defined below. */
125 #define POINTER_SIZE (TARGET_64BIT ? 64 : 32)
127 /* A C expression for the size in bits of the type `short' on the
128 target machine. If you don't define this, the default is half a
129 word. (If this would be less than one storage unit, it is
130 rounded up to one unit.) */
131 #define SHORT_TYPE_SIZE 16
133 /* A C expression for the size in bits of the type `int' on the
134 target machine. If you don't define this, the default is one
136 #define INT_TYPE_SIZE 32
138 /* A C expression for the size in bits of the type `long' on the
139 target machine. If you don't define this, the default is one
141 #define LONG_TYPE_SIZE (TARGET_64BIT ? 64 : 32)
142 #define MAX_LONG_TYPE_SIZE 64
144 /* A C expression for the size in bits of the type `long long' on the
145 target machine. If you don't define this, the default is two
147 #define LONG_LONG_TYPE_SIZE 64
149 /* Right now we only support two floating point formats, the
150 32 and 64 bit ieee formats. */
152 #define FLOAT_TYPE_SIZE 32
153 #define DOUBLE_TYPE_SIZE 64
154 #define LONG_DOUBLE_TYPE_SIZE 64
156 /* Define this macro if it is advisable to hold scalars in registers
157 in a wider mode than that declared by the program. In such cases,
158 the value is constrained to be within the bounds of the declared
159 type, but kept valid in the wider mode. The signedness of the
160 extension may differ from that of the type. */
162 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
163 if (INTEGRAL_MODE_P (MODE) && \
164 GET_MODE_SIZE (MODE) < UNITS_PER_WORD) { \
168 /* Defining PROMOTE_FUNCTION_ARGS eliminates some unnecessary zero/sign
169 extensions applied to char/short functions arguments. Defining
170 PROMOTE_FUNCTION_RETURN does the same for function returns. */
172 #define PROMOTE_FUNCTION_ARGS
173 #define PROMOTE_FUNCTION_RETURN
174 #define PROMOTE_FOR_CALL_ONLY
176 /* Allocation boundary (in *bits*) for storing pointers in memory. */
178 #define POINTER_BOUNDARY 32
180 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
182 #define PARM_BOUNDARY (TARGET_64BIT ? 64 : 32)
184 /* Boundary (in *bits*) on which stack pointer should be aligned. */
186 #define STACK_BOUNDARY 64
188 /* Allocation boundary (in *bits*) for the code of a function. */
190 #define FUNCTION_BOUNDARY 32
192 /* There is no point aligning anything to a rounder boundary than this. */
194 #define BIGGEST_ALIGNMENT 64
196 /* Alignment of field after `int : 0' in a structure. */
198 #define EMPTY_FIELD_BOUNDARY 32
200 /* Alignment on even addresses for LARL instruction. */
202 #define CONSTANT_ALIGNMENT(EXP, ALIGN) (ALIGN) < 16 ? 16 : (ALIGN)
204 #define DATA_ALIGNMENT(TYPE, ALIGN) (ALIGN) < 16 ? 16 : (ALIGN)
206 /* Define this if move instructions will actually fail to work when given
209 #define STRICT_ALIGNMENT 0
211 /* real arithmetic */
213 #define REAL_ARITHMETIC
215 /* Define target floating point format. */
217 #undef TARGET_FLOAT_FORMAT
219 #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
221 #define TARGET_FLOAT_FORMAT IBM_FLOAT_FORMAT
224 /* Define if special allocation order desired. */
226 #define REG_ALLOC_ORDER \
227 { 1, 2, 3, 4, 5, 0, 14, 13, 12, 11, 10, 9, 8, 7, 6, \
228 16, 17, 18, 19, 20, 21, 22, 23, \
229 24, 25, 26, 27, 28, 29, 30, 31, \
232 /* Standard register usage. */
234 #define INT_REGNO_P(N) ( (int)(N) >= 0 && (N) < 16 )
236 #define FLOAT_REGNO_P(N) ( (N) >= 16 && (N) < 32 )
238 #define FLOAT_REGNO_P(N) ( (N) >= 16 && (N) < 20 )
240 #define CC_REGNO_P(N) ( (N) == 33 )
242 /* Number of actual hardware registers. The hardware registers are
243 assigned numbers for the compiler from 0 to just below
244 FIRST_PSEUDO_REGISTER.
245 All registers that the compiler knows about must be given numbers,
246 even those that are not normally considered general registers.
247 For the 390, we give the data registers numbers 0-15,
248 and the floating point registers numbers 16-19.
249 G5 and following have 16 IEEE floating point register,
250 which get numbers 16-31. */
252 #define FIRST_PSEUDO_REGISTER 35
254 /* Number of hardware registers that go into the DWARF-2 unwind info.
255 If not defined, equals FIRST_PSEUDO_REGISTER. */
257 #define DWARF_FRAME_REGISTERS 34
259 /* The following register have a fix usage
260 GPR 12: GOT register points to the GOT, setup in prologue,
261 GOT contains pointer to variables in shared libraries
262 GPR 13: Base register setup in prologue to point to the
263 literal table of each function
264 GPR 14: Return registers holds the return address
265 GPR 15: Stack pointer */
267 #define PIC_OFFSET_TABLE_REGNUM 12
268 #define BASE_REGISTER 13
269 #define RETURN_REGNUM 14
270 #define STACK_POINTER_REGNUM 15
272 #define FIXED_REGISTERS \
283 /* 1 for registers not available across function calls. These must include
284 the FIXED_REGISTERS and also any registers that can be used without being
286 The latter must include the registers where values are returned
287 and the register where structure-value addresses are passed. */
289 #define CALL_USED_REGISTERS \
300 /* Like `CALL_USED_REGISTERS' except this macro doesn't require that
301 the entire set of `FIXED_REGISTERS' be included.
302 (`CALL_USED_REGISTERS' must be a superset of `FIXED_REGISTERS'). */
304 #define CALL_REALLY_USED_REGISTERS \
315 /* Macro to conditionally modify fixed_regs/call_used_regs. */
317 #define CONDITIONAL_REGISTER_USAGE \
324 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
325 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
329 for (i = 24; i < 32; i++) \
330 call_used_regs[i] = call_really_used_regs[i] = 0; \
334 for (i = 18; i < 20; i++) \
335 call_used_regs[i] = call_really_used_regs[i] = 0; \
339 /* The following register have a special usage
340 GPR 11: Frame pointer if needed to point to automatic variables.
341 GPR 32: In functions with more the 5 args this register
342 points to that arguments, it is always eliminated
343 with stack- or frame-pointer.
344 GPR 33: Condition code 'register' */
346 #define HARD_FRAME_POINTER_REGNUM 11
347 #define FRAME_POINTER_REGNUM 34
349 #define ARG_POINTER_REGNUM 32
353 /* We use the register %r0 to pass the static chain to a nested function.
355 Note: It is assumed that this register is call-clobbered!
356 We can't use any of the function-argument registers either,
357 and register 1 is needed by the trampoline code, so we have
358 no other choice but using this one ... */
360 #define STATIC_CHAIN_REGNUM 0
362 /* Return number of consecutive hard regs needed starting at reg REGNO
363 to hold something of mode MODE.
364 This is ordinarily the length in words of a value of mode MODE
365 but can be less for certain modes in special long registers. */
367 #define HARD_REGNO_NREGS(REGNO, MODE) \
368 (FLOAT_REGNO_P(REGNO)? \
369 (GET_MODE_CLASS(MODE) == MODE_COMPLEX_FLOAT ? 2 : 1) : \
370 INT_REGNO_P(REGNO)? \
371 ((GET_MODE_SIZE(MODE)+UNITS_PER_WORD-1) / UNITS_PER_WORD) : \
374 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
375 The gprs can hold QI, HI, SI, SF, DF, SC and DC.
376 Even gprs can hold DI.
377 The floating point registers can hold DF, SF, DC and SC. */
379 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
380 (FLOAT_REGNO_P(REGNO)? \
381 (GET_MODE_CLASS(MODE) == MODE_FLOAT || \
382 GET_MODE_CLASS(MODE) == MODE_COMPLEX_FLOAT || \
383 (MODE) == SImode || (MODE) == DImode) : \
384 INT_REGNO_P(REGNO)? \
385 (HARD_REGNO_NREGS(REGNO, MODE) == 1 || !((REGNO) & 1)) : \
387 GET_MODE_CLASS (MODE) == MODE_CC : \
390 /* Value is 1 if it is a good idea to tie two pseudo registers when one has
391 mode MODE1 and one has mode MODE2.
392 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
393 for any hard reg, then this must be 0 for correct output. */
395 #define MODES_TIEABLE_P(MODE1, MODE2) \
396 (((MODE1) == SFmode || (MODE1) == DFmode) \
397 == ((MODE2) == SFmode || (MODE2) == DFmode))
399 /* If defined, gives a class of registers that cannot be used as the
400 operand of a SUBREG that changes the mode of the object illegally. */
402 #define CLASS_CANNOT_CHANGE_MODE FP_REGS
404 /* Defines illegal mode changes for CLASS_CANNOT_CHANGE_MODE. */
406 #define CLASS_CANNOT_CHANGE_MODE_P(FROM,TO) \
407 (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO))
409 /* Define this macro if references to a symbol must be treated
410 differently depending on something about the variable or
411 function named by the symbol (such as what section it is in).
413 On s390, if using PIC, mark a SYMBOL_REF for a non-global symbol
414 so that we may access it directly in the GOT. */
416 #define ENCODE_SECTION_INFO(DECL) \
421 rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
422 ? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
424 if (GET_CODE (rtl) == MEM) \
426 SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
427 = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
428 || ! TREE_PUBLIC (DECL)); \
435 /* This is an array of structures. Each structure initializes one pair
436 of eliminable registers. The "from" register number is given first,
437 followed by "to". Eliminations of the same "from" register are listed
438 in order of preference. */
440 #define ELIMINABLE_REGS \
441 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
442 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
443 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
444 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}}
446 #define CAN_ELIMINATE(FROM, TO) (1)
448 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
449 { if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
451 else if ((FROM) == FRAME_POINTER_REGNUM \
452 && (TO) == HARD_FRAME_POINTER_REGNUM) \
454 else if ((FROM) == ARG_POINTER_REGNUM \
455 && (TO) == HARD_FRAME_POINTER_REGNUM) \
456 { (OFFSET) = s390_arg_frame_offset (); } \
457 else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
458 { (OFFSET) = s390_arg_frame_offset (); } \
463 #define CAN_DEBUG_WITHOUT_FP
465 /* Value should be nonzero if functions must have frame pointers.
466 Zero means the frame pointer need not be set up (and parms may be
467 accessed via the stack pointer) in functions that seem suitable.
468 This is computed in `reload', in reload1.c. */
470 #define FRAME_POINTER_REQUIRED 0
472 /* Define the classes of registers for register constraints in the
473 machine description. Also define ranges of constants.
475 One of the classes must always be named ALL_REGS and include all hard regs.
476 If there is more than one class, another class must be named NO_REGS
477 and contain no registers.
479 The name GENERAL_REGS must be the name of a class (or an alias for
480 another name such as ALL_REGS). This is the class of registers
481 that is allowed by "g" or "r" in a register constraint.
482 Also, registers outside this class are allocated only when
483 instructions express preferences for them.
485 The classes must be numbered in nondecreasing order; that is,
486 a larger-numbered class must never be contained completely
487 in a smaller-numbered class.
489 For any two classes, it is very desirable that there be another
490 class that represents their union. */
492 /*#define SMALL_REGISTER_CLASSES 1*/
496 NO_REGS
, ADDR_REGS
, GENERAL_REGS
,
497 FP_REGS
, ADDR_FP_REGS
, GENERAL_FP_REGS
,
498 ALL_REGS
, LIM_REG_CLASSES
501 #define N_REG_CLASSES (int) LIM_REG_CLASSES
503 /* Give names of register classes as strings for dump file. */
505 #define REG_CLASS_NAMES \
506 { "NO_REGS", "ADDR_REGS", "GENERAL_REGS", \
507 "FP_REGS", "ADDR_FP_REGS", "GENERAL_FP_REGS", "ALL_REGS" }
509 /* Define which registers fit in which classes. This is an initializer for
510 a vector of HARD_REG_SET of length N_REG_CLASSES.
511 G5 and latter have 16 register and support IEEE floating point operations. */
513 #define REG_CLASS_CONTENTS \
515 { 0x00000000, 0x00000000 }, /* NO_REGS */ \
516 { 0x0000fffe, 0x00000005 }, /* ADDR_REGS */ \
517 { 0x0000ffff, 0x00000005 }, /* GENERAL_REGS */ \
518 { 0xffff0000, 0x00000000 }, /* FP_REGS */ \
519 { 0xfffffffe, 0x00000005 }, /* ADDR_FP_REGS */ \
520 { 0xffffffff, 0x00000005 }, /* GENERAL_FP_REGS */ \
521 { 0xffffffff, 0x00000007 }, /* ALL_REGS */ \
525 /* The same information, inverted:
526 Return the class number of the smallest class containing
527 reg number REGNO. This could be a conditional expression
528 or could index an array. */
530 #define REGNO_REG_CLASS(REGNO) (regclass_map[REGNO])
532 extern enum reg_class regclass_map
[FIRST_PSEUDO_REGISTER
]; /* smalled class containing REGNO */
534 /* The class value for index registers, and the one for base regs. */
536 #define INDEX_REG_CLASS ADDR_REGS
537 #define BASE_REG_CLASS ADDR_REGS
539 /* Get reg_class from a letter such as appears in the machine description. */
541 #define REG_CLASS_FROM_LETTER(C) \
542 ((C) == 'a' ? ADDR_REGS : \
543 (C) == 'd' ? GENERAL_REGS : \
544 (C) == 'f' ? FP_REGS : NO_REGS)
546 /* The letters I, J, K, L and M in a register constraint string can be used
547 to stand for particular ranges of immediate operands.
548 This macro defines what the ranges are.
549 C is the letter, and VALUE is a constant value.
550 Return 1 if VALUE is in the range specified by C. */
552 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
553 ((C) == 'I' ? (unsigned long) (VALUE) < 256 : \
554 (C) == 'J' ? (unsigned long) (VALUE) < 4096 : \
555 (C) == 'K' ? (VALUE) >= -32768 && (VALUE) < 32768 : \
556 (C) == 'L' ? (unsigned long) (VALUE) < 65536 : 0)
558 /* Similar, but for floating constants, and defining letters G and H.
559 Here VALUE is the CONST_DOUBLE rtx itself. */
561 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 1
563 /* 'Q' means a memory-reference for a S-type operand. */
565 #define EXTRA_CONSTRAINT(OP, C) \
566 ((C) == 'Q' ? s_operand (OP, GET_MODE (OP)) : \
567 (C) == 'S' ? larl_operand (OP, GET_MODE (OP)) : 0)
569 /* Given an rtx X being reloaded into a reg required to be in class CLASS,
570 return the class of reg to actually use. In general this is just CLASS;
571 but on some machines in some cases it is preferable to use a more
572 restrictive class. */
574 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
575 s390_preferred_reload_class ((X), (CLASS))
577 /* Return the maximum number of consecutive registers needed to represent
578 mode MODE in a register of class CLASS. */
580 #define CLASS_MAX_NREGS(CLASS, MODE) \
581 ((CLASS) == FP_REGS ? \
582 (GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT ? 2 : 1) : \
583 (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
585 /* We need a secondary reload when loading a PLUS which is
586 not a valid operand for LOAD ADDRESS. */
588 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
589 s390_secondary_input_reload_class ((CLASS), (MODE), (IN))
591 /* If we are copying between FP registers and anything else, we need a memory
594 #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \
595 ((CLASS1) != (CLASS2) && ((CLASS1) == FP_REGS || (CLASS2) == FP_REGS))
597 /* Get_secondary_mem widens its argument to BITS_PER_WORD which loses on 64bit
598 because the movsi and movsf patterns don't handle r/f moves. */
600 #define SECONDARY_MEMORY_NEEDED_MODE(MODE) \
601 (GET_MODE_BITSIZE (MODE) < 32 \
602 ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \
606 /* A C expression whose value is nonzero if pseudos that have been
607 assigned to registers of class CLASS would likely be spilled
608 because registers of CLASS are needed for spill registers.
610 The default value of this macro returns 1 if CLASS has exactly one
611 register and zero otherwise. On most machines, this default
612 should be used. Only define this macro to some other expression
613 if pseudo allocated by `local-alloc.c' end up in memory because
614 their hard registers were needed for spill registers. If this
615 macro returns nonzero for those classes, those pseudos will only
616 be allocated by `global.c', which knows how to reallocate the
617 pseudo to another register. If there would not be another
618 register available for reallocation, you should not change the
619 definition of this macro since the only effect of such a
620 definition would be to slow down register allocation. */
622 /* Stack layout; function entry, exit and calling. */
624 /* The return address of the current frame is retrieved
625 from the initial value of register RETURN_REGNUM.
626 For frames farther back, we use the stack slot where
627 the corresponding RETURN_REGNUM register was saved. */
629 #define DYNAMIC_CHAIN_ADDRESS(FRAME) \
630 ((FRAME) != hard_frame_pointer_rtx ? (FRAME) : \
631 plus_constant (arg_pointer_rtx, -STACK_POINTER_OFFSET))
633 #define RETURN_ADDR_RTX(COUNT, FRAME) \
634 ((COUNT) == 0 ? get_hard_reg_initial_val (Pmode, RETURN_REGNUM) : \
635 gen_rtx_MEM (Pmode, \
636 memory_address (Pmode, \
637 plus_constant (DYNAMIC_CHAIN_ADDRESS ((FRAME)), \
638 RETURN_REGNUM * UNITS_PER_WORD))))
640 /* The following macros will turn on dwarf2 exception hndling
641 Other code location for this exception handling are
642 in s390.md (eh_return insn) and in linux.c in the prologue. */
644 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, RETURN_REGNUM)
646 /* We have 31 bit mode. */
648 #define MASK_RETURN_ADDR (TARGET_64BIT ? GEN_INT (-1) : GEN_INT (0x7fffffff))
650 /* The offset from the incoming value of %sp to the top of the stack frame
651 for the current function. */
653 #define INCOMING_FRAME_SP_OFFSET STACK_POINTER_OFFSET
655 /* Location, from where return address to load. */
657 #define DWARF_FRAME_RETURN_COLUMN 14
659 /* Describe how we implement __builtin_eh_return. */
660 #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 6 : INVALID_REGNUM)
661 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 10)
662 #define EH_RETURN_HANDLER_RTX \
663 gen_rtx_MEM (Pmode, plus_constant (arg_pointer_rtx, \
664 TARGET_64BIT? -48 : -40))
666 /* Define this if pushing a word on the stack makes the stack pointer a
669 #define STACK_GROWS_DOWNWARD
671 /* Define this if the nominal address of the stack frame is at the
672 high-address end of the local variables; that is, each additional local
673 variable allocated goes at a more negative offset in the frame. */
675 /* #define FRAME_GROWS_DOWNWARD */
677 /* Offset from stack-pointer to first location of outgoing args. */
679 #define STACK_POINTER_OFFSET (TARGET_64BIT ? 160 : 96)
681 /* Offset within stack frame to start allocating local variables at.
682 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
683 first local allocated. Otherwise, it is the offset to the BEGINNING
684 of the first local allocated. */
686 #define STARTING_FRAME_OFFSET \
687 (STACK_POINTER_OFFSET + current_function_outgoing_args_size)
689 #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0
691 /* If we generate an insn to push BYTES bytes, this says how many the stack
692 pointer really advances by. On S/390, we have no push instruction. */
694 /* #define PUSH_ROUNDING(BYTES) */
696 /* Accumulate the outgoing argument count so we can request the right
697 DSA size and determine stack offset. */
699 #define ACCUMULATE_OUTGOING_ARGS 1
701 /* Offset from the stack pointer register to an item dynamically
702 allocated on the stack, e.g., by `alloca'.
704 The default value for this macro is `STACK_POINTER_OFFSET' plus the
705 length of the outgoing arguments. The default is correct for most
706 machines. See `function.c' for details. */
707 #define STACK_DYNAMIC_OFFSET(FUNDECL) (STARTING_FRAME_OFFSET)
709 /* Offset of first parameter from the argument pointer register value.
710 On the S/390, we define the argument pointer to the start of the fixed
712 #define FIRST_PARM_OFFSET(FNDECL) 0
714 /* Define this if stack space is still allocated for a parameter passed
715 in a register. The value is the number of bytes allocated to this
717 /* #define REG_PARM_STACK_SPACE(FNDECL) 32 */
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 /* 1 if N is a possible register number for function argument passing.
724 On S390, general registers 2 - 6 and floating point register 0 and 2
725 are used in this way. */
727 #define FUNCTION_ARG_REGNO_P(N) (((N) >=2 && (N) <7) || \
728 (N) == 16 || (N) == 17)
730 /* Define a data type for recording info about an argument list during
731 the scan of that argument list. This data type should hold all
732 necessary information about the function itself and about the args
733 processed so far, enough to enable macros such as FUNCTION_ARG to
734 determine where the next arg should go. */
736 typedef struct s390_arg_structure
738 int gprs
; /* gpr so far */
739 int fprs
; /* fpr so far */
744 /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to
745 a function whose data type is FNTYPE.
746 For a library call, FNTYPE is 0. */
748 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, NN) \
749 ((CUM).gprs=0, (CUM).fprs=0)
751 /* Update the data in CUM to advance over an argument of mode MODE and
752 data type TYPE. (TYPE is null for libcalls where that information
753 may not be available.) */
755 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
756 s390_function_arg_advance (&CUM, MODE, TYPE, NAMED)
758 /* Define where to put the arguments to a function. Value is zero to push
759 the argument on the stack, or a hard register in which to store the
762 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
763 s390_function_arg (&CUM, MODE, TYPE, NAMED)
765 /* Define where to expect the arguments of a function. Value is zero, if
766 the argument is on the stack, or a hard register in which the argument
767 is stored. It is the same like FUNCTION_ARG, except for unnamed args
768 That means, that all in case of varargs used, the arguments are expected
770 S/390 has already space on the stack for args coming in registers,
771 they are pushed in prologue, if needed. */
774 /* Define the `__builtin_va_list' type. */
776 #define BUILD_VA_LIST_TYPE(VALIST) \
777 (VALIST) = s390_build_va_list ()
779 /* Implement `va_start' for varargs and stdarg. */
781 #define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \
782 s390_va_start (stdarg, valist, nextarg)
784 /* Implement `va_arg'. */
786 #define EXPAND_BUILTIN_VA_ARG(valist, type) \
787 s390_va_arg (valist, type)
789 /* For an arg passed partly in registers and partly in memory, this is the
790 number of registers used. For args passed entirely in registers or
791 entirely in memory, zero. */
793 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
796 /* Define if returning from a function call automatically pops the
797 arguments described by the number-of-args field in the call. */
799 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, SIZE) 0
802 /* Define how to find the value returned by a function. VALTYPE is the
803 data type of the value (as a tree).
804 If the precise function being called is known, FUNC is its FUNCTION_DECL;
805 otherwise, FUNC is 15. */
807 #define RET_REG(MODE) ((GET_MODE_CLASS (MODE) == MODE_INT \
808 || TARGET_SOFT_FLOAT ) ? 2 : 16)
811 /* for structs the address is passed, and the Callee makes a
812 copy, only if needed */
814 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
815 s390_function_arg_pass_by_reference (MODE, TYPE)
818 /* Register 2 (and 3) for integral values
819 or floating point register 0 (and 2) for fp values are used. */
821 #define FUNCTION_VALUE(VALTYPE, FUNC) \
822 gen_rtx_REG ((INTEGRAL_TYPE_P (VALTYPE) \
823 && TYPE_PRECISION (VALTYPE) < BITS_PER_WORD) \
824 || POINTER_TYPE_P (VALTYPE) \
825 ? word_mode : TYPE_MODE (VALTYPE), \
826 TREE_CODE (VALTYPE) == REAL_TYPE && TARGET_HARD_FLOAT ? 16 : 2)
828 /* Define how to find the value returned by a library function assuming
829 the value has mode MODE. */
831 #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, RET_REG (MODE))
833 /* 1 if N is a possible register number for a function value. */
835 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2 || (N) == 16)
837 /* The definition of this macro implies that there are cases where
838 a scalar value cannot be returned in registers. */
840 #define RETURN_IN_MEMORY(type) \
841 (TYPE_MODE (type) == BLKmode || \
842 GET_MODE_CLASS (TYPE_MODE (type)) == MODE_COMPLEX_INT || \
843 GET_MODE_CLASS (TYPE_MODE (type)) == MODE_COMPLEX_FLOAT)
845 /* Mode of stack savearea.
846 FUNCTION is VOIDmode because calling convention maintains SP.
847 BLOCK needs Pmode for SP.
848 NONLOCAL needs twice Pmode to maintain both backchain and SP. */
850 #define STACK_SAVEAREA_MODE(LEVEL) \
851 (LEVEL == SAVE_FUNCTION ? VOIDmode \
852 : LEVEL == SAVE_NONLOCAL ? (TARGET_64BIT ? TImode : DImode) : Pmode)
854 /* Structure value address is passed as invisible first argument (gpr 2). */
856 #define STRUCT_VALUE 0
858 /* This macro definition sets up a default value for `main' to return. */
860 #define DEFAULT_MAIN_RETURN c_expand_return (integer_zero_node)
862 /* Length in units of the trampoline for entering a nested function. */
864 #define TRAMPOLINE_SIZE (TARGET_64BIT ? 36 : 20)
866 /* Initialize the dynamic part of trampoline. */
868 #define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, CXT) \
869 s390_initialize_trampoline ((ADDR), (FNADDR), (CXT))
871 /* Template for constant part of trampoline. */
873 #define TRAMPOLINE_TEMPLATE(FILE) \
874 s390_trampoline_template (FILE)
876 /* Output assembler code to FILE to increment profiler label # LABELNO
877 for profiling a function entry. */
879 #define FUNCTION_PROFILER(FILE, LABELNO) \
880 s390_function_profiler ((FILE), ((LABELNO)))
882 /* #define PROFILE_BEFORE_PROLOGUE */
884 /* Define EXIT_IGNORE_STACK if, when returning from a function, the stack
885 pointer does not matter (provided there is a frame pointer). */
887 #define EXIT_IGNORE_STACK 1
889 /* Addressing modes, and classification of registers for them. */
891 /* #define HAVE_POST_INCREMENT */
892 /* #define HAVE_POST_DECREMENT */
894 /* #define HAVE_PRE_DECREMENT */
895 /* #define HAVE_PRE_INCREMENT */
897 /* These assume that REGNO is a hard or pseudo reg number. They give
898 nonzero only if REGNO is a hard reg of the suitable class or a pseudo
899 reg currently allocated to a suitable hard reg.
900 These definitions are NOT overridden anywhere. */
902 #define REGNO_OK_FOR_INDEX_P(REGNO) \
903 (((REGNO) < FIRST_PSEUDO_REGISTER \
904 && REGNO_REG_CLASS ((REGNO)) == ADDR_REGS) \
905 || (reg_renumber[REGNO] > 0 && reg_renumber[REGNO] < 16))
907 #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P (REGNO)
909 #define REGNO_OK_FOR_DATA_P(REGNO) \
910 ((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16)
912 #define REGNO_OK_FOR_FP_P(REGNO) \
913 FLOAT_REGNO_P (REGNO)
915 /* Now macros that check whether X is a register and also,
916 strictly, whether it is in a specified class. */
918 /* 1 if X is a data register. */
920 #define DATA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_DATA_P (REGNO (X)))
922 /* 1 if X is an fp register. */
924 #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
926 /* 1 if X is an address register. */
928 #define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X)))
930 /* Maximum number of registers that can appear in a valid memory address. */
932 #define MAX_REGS_PER_ADDRESS 2
934 /* Recognize any constant value that is a valid address. */
936 #define CONSTANT_ADDRESS_P(X) 0
938 #define SYMBOLIC_CONST(X) \
939 (GET_CODE (X) == SYMBOL_REF \
940 || GET_CODE (X) == LABEL_REF \
941 || (GET_CODE (X) == CONST && symbolic_reference_mentioned_p (X)))
943 /* General operand is everything except SYMBOL_REF, CONST and CONST_DOUBLE
944 they have to be forced to constant pool
945 CONST_INT have to be forced into constant pool, if greater than
946 64k. Depending on the insn they have to be force into constant pool
947 for smaller value; in this case we have to work with nonimmediate operand. */
949 #define LEGITIMATE_PIC_OPERAND_P(X) \
950 legitimate_pic_operand_p (X)
952 /* Nonzero if the constant value X is a legitimate general operand.
953 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
955 #define LEGITIMATE_CONSTANT_P(X) \
956 legitimate_constant_p (X)
958 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx and check
959 its validity for a certain class. We have two alternate definitions
960 for each of them. The usual definition accepts all pseudo regs; the
961 other rejects them all. The symbol REG_OK_STRICT causes the latter
962 definition to be used.
964 Most source files want to accept pseudo regs in the hope that they will
965 get allocated to the class that the insn wants them to be in.
966 Some source files that are used after register allocation
967 need to be strict. */
970 * Nonzero if X is a hard reg that can be used as an index or if it is
974 #define REG_OK_FOR_INDEX_NONSTRICT_P(X) \
975 ((GET_MODE (X) == Pmode) && \
976 ((REGNO (X) >= FIRST_PSEUDO_REGISTER) \
977 || REGNO_REG_CLASS (REGNO (X)) == ADDR_REGS))
979 /* Nonzero if X is a hard reg that can be used as a base reg or if it is
982 #define REG_OK_FOR_BASE_NONSTRICT_P(X) REG_OK_FOR_INDEX_NONSTRICT_P (X)
984 /* Nonzero if X is a hard reg that can be used as an index. */
986 #define REG_OK_FOR_INDEX_STRICT_P(X) \
987 ((GET_MODE (X) == Pmode) && (REGNO_OK_FOR_INDEX_P (REGNO (X))))
989 /* Nonzero if X is a hard reg that can be used as a base reg. */
991 #define REG_OK_FOR_BASE_STRICT_P(X) \
992 ((GET_MODE (X) == Pmode) && (REGNO_OK_FOR_BASE_P (REGNO (X))))
995 #ifndef REG_OK_STRICT
996 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_NONSTRICT_P(X)
997 #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NONSTRICT_P(X)
999 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_STRICT_P(X)
1000 #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P(X)
1004 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression that is a
1005 valid memory address for an instruction.
1006 The MODE argument is the machine mode for the MEM expression
1007 that wants to use this address.
1009 The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
1010 except for CONSTANT_ADDRESS_P which is actually machine-independent. */
1012 #ifdef REG_OK_STRICT
1013 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1015 if (legitimate_address_p (MODE, X, 1)) \
1019 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1021 if (legitimate_address_p (MODE, X, 0)) \
1027 /* S/390 has no mode dependent addresses. */
1029 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)
1031 /* Try machine-dependent ways of modifying an illegitimate address
1032 to be legitimate. If we find one, return the new, valid address.
1033 This macro is used in only one place: `memory_address' in explow.c. */
1035 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
1037 (X) = legitimize_address (X, OLDX, MODE); \
1038 if (memory_address_p (MODE, X)) \
1042 /* Specify the machine mode that this machine uses for the index in the
1043 tablejump instruction. */
1045 #define CASE_VECTOR_MODE (TARGET_64BIT ? DImode : SImode)
1047 /* Define this if the tablejump instruction expects the table to contain
1048 offsets from the address of the table.
1049 Do not define this if the table should contain absolute addresses. */
1051 /* #define CASE_VECTOR_PC_RELATIVE */
1053 /* Load from integral MODE < SI from memory into register makes sign_extend
1055 In our case sign_extension happens for Halfwords, other no extension. */
1057 #define LOAD_EXTEND_OP(MODE) \
1058 (TARGET_64BIT ? ((MODE) == QImode ? ZERO_EXTEND : \
1059 (MODE) == HImode ? SIGN_EXTEND : NIL) \
1060 : ((MODE) == HImode ? SIGN_EXTEND : NIL))
1062 /* Define this if fixuns_trunc is the same as fix_trunc. */
1064 /* #define FIXUNS_TRUNC_LIKE_FIX_TRUNC */
1066 /* We use "unsigned char" as default. */
1068 #define DEFAULT_SIGNED_CHAR 0
1070 /* Max number of bytes we can move from memory to memory in one reasonably
1071 fast instruction. */
1073 #define MOVE_MAX 256
1075 /* Nonzero if access to memory by bytes is slow and undesirable. */
1077 #define SLOW_BYTE_ACCESS 1
1079 /* Define if shifts truncate the shift count which implies one can omit
1080 a sign-extension or zero-extension of a shift count. */
1082 /* #define SHIFT_COUNT_TRUNCATED */
1084 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1085 is done just by pretending it is already truncated. */
1087 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1089 /* We assume that the store-condition-codes instructions store 0 for false
1090 and some other value for true. This is the value stored for true. */
1092 /* #define STORE_FLAG_VALUE -1 */
1094 /* Don't perform CSE on function addresses. */
1096 #define NO_FUNCTION_CSE
1098 /* Specify the machine mode that pointers have.
1099 After generation of rtl, the compiler makes no further distinction
1100 between pointers and any other objects of this machine mode. */
1102 #define Pmode ((enum machine_mode) (TARGET_64BIT ? DImode : SImode))
1104 /* A function address in a call instruction is a byte address (for
1105 indexing purposes) so give the MEM rtx a byte's mode. */
1107 #define FUNCTION_MODE QImode
1110 /* A part of a C `switch' statement that describes the relative costs
1111 of constant RTL expressions. It must contain `case' labels for
1112 expression codes `const_int', `const', `symbol_ref', `label_ref'
1113 and `const_double'. Each case must ultimately reach a `return'
1114 statement to return the relative cost of the use of that kind of
1115 constant value in an expression. The cost may depend on the
1116 precise value of the constant, which is available for examination
1117 in X, and the rtx code of the expression in which it is contained,
1118 found in OUTER_CODE.
1120 CODE is the expression code--redundant, since it can be obtained
1121 with `GET_CODE (X)'. */
1122 /* Force_const_mem does not work out of reload, because the saveable_obstack
1123 is set to reload_obstack, which does not live long enough.
1124 Because of this we cannot use force_const_mem in addsi3.
1125 This leads to problems with gen_add2_insn with a constant greater
1126 than a short. Because of that we give an addition of greater
1127 constants a cost of 3 (reload1.c 10096). */
1130 #define CONST_COSTS(RTX, CODE, OUTER_CODE) \
1132 if ((GET_CODE (XEXP (RTX, 0)) == MINUS) && \
1133 (GET_CODE (XEXP (XEXP (RTX, 0), 1)) != CONST_INT)) \
1136 if ((OUTER_CODE == PLUS) && \
1137 ((INTVAL (RTX) > 32767) || \
1138 (INTVAL (RTX) < -32768))) \
1139 return COSTS_N_INSNS (3); \
1142 case CONST_DOUBLE: \
1146 /* Like `CONST_COSTS' but applies to nonconstant RTL expressions.
1147 This can be used, for example, to indicate how costly a multiply
1148 instruction is. In writing this macro, you can use the construct
1149 `COSTS_N_INSNS (N)' to specify a cost equal to N fast
1150 instructions. OUTER_CODE is the code of the expression in which X
1153 This macro is optional; do not define it if the default cost
1154 assumptions are adequate for the target machine. */
1156 #define RTX_COSTS(X, CODE, OUTER_CODE) \
1169 if (GET_MODE (XEXP (X, 0)) == DImode) \
1180 /* An expression giving the cost of an addressing mode that contains
1181 ADDRESS. If not defined, the cost is computed from the ADDRESS
1182 expression and the `CONST_COSTS' values.
1184 For most CISC machines, the default cost is a good approximation
1185 of the true cost of the addressing mode. However, on RISC
1186 machines, all instructions normally have the same length and
1187 execution time. Hence all addresses will have equal costs.
1189 In cases where more than one form of an address is known, the form
1190 with the lowest cost will be used. If multiple forms have the
1191 same, lowest, cost, the one that is the most complex will be used.
1193 For example, suppose an address that is equal to the sum of a
1194 register and a constant is used twice in the same basic block.
1195 When this macro is not defined, the address will be computed in a
1196 register and memory references will be indirect through that
1197 register. On machines where the cost of the addressing mode
1198 containing the sum is no higher than that of a simple indirect
1199 reference, this will produce an additional instruction and
1200 possibly require an additional register. Proper specification of
1201 this macro eliminates this overhead for such machines.
1203 Similar use of this macro is made in strength reduction of loops.
1205 ADDRESS need not be valid as an address. In such a case, the cost
1206 is not relevant and can be any value; invalid addresses need not be
1207 assigned a different cost.
1209 On machines where an address involving more than one register is as
1210 cheap as an address computation involving only one register,
1211 defining `ADDRESS_COST' to reflect this can cause two registers to
1212 be live over a region of code where only one would have been if
1213 `ADDRESS_COST' were not defined in that manner. This effect should
1214 be considered in the definition of this macro. Equivalent costs
1215 should probably only be given to addresses with different numbers
1216 of registers on machines with lots of registers.
1218 This macro will normally either not be defined or be defined as a
1221 On s390 symbols are expensive if compiled with fpic
1224 #define ADDRESS_COST(RTX) \
1225 ((flag_pic && GET_CODE (RTX) == SYMBOL_REF) ? 2 : 1)
1227 /* On s390, copy between fprs and gprs is expensive. */
1229 #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \
1230 (( ( reg_classes_intersect_p ((CLASS1), GENERAL_REGS) \
1231 && reg_classes_intersect_p ((CLASS2), FP_REGS)) \
1232 || ( reg_classes_intersect_p ((CLASS1), FP_REGS) \
1233 && reg_classes_intersect_p ((CLASS2), GENERAL_REGS))) ? 10 : 1)
1236 /* A C expression for the cost of moving data of mode M between a
1237 register and memory. A value of 2 is the default; this cost is
1238 relative to those in `REGISTER_MOVE_COST'.
1240 If moving between registers and memory is more expensive than
1241 between two registers, you should define this macro to express the
1244 #define MEMORY_MOVE_COST(M, C, I) 1
1246 /* A C expression for the cost of a branch instruction. A value of 1
1247 is the default; other values are interpreted relative to that. */
1249 #define BRANCH_COST 1
1251 /* Add any extra modes needed to represent the condition code. */
1252 #define EXTRA_CC_MODES \
1253 CC (CCZmode, "CCZ") \
1254 CC (CCAmode, "CCA") \
1255 CC (CCLmode, "CCL") \
1256 CC (CCUmode, "CCU") \
1257 CC (CCSmode, "CCS") \
1260 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
1261 return the mode to be used for the comparison. */
1263 #define SELECT_CC_MODE(OP, X, Y) s390_select_ccmode ((OP), (X), (Y))
1266 /* Define the information needed to generate branch and scc insns. This is
1267 stored from the compare operation. Note that we can't use "rtx" here
1268 since it hasn't been defined! */
1270 extern struct rtx_def
*s390_compare_op0
, *s390_compare_op1
;
1273 /* How to refer to registers in assembler output. This sequence is
1274 indexed by compiler's hard-register-number (see above). */
1276 #define REGISTER_NAMES \
1277 { "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", \
1278 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", \
1279 "%f0", "%f2", "%f4", "%f6", "%f1", "%f3", "%f5", "%f7", \
1280 "%f8", "%f10", "%f12", "%f14", "%f9", "%f11", "%f13", "%f15", \
1281 "%ap", "%cc", "%fp" \
1284 /* implicit call of memcpy, not bcopy */
1286 #define TARGET_MEM_FUNCTIONS
1289 /* Print operand X (an rtx) in assembler syntax to file FILE.
1290 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
1291 For `%' followed by punctuation, CODE is the punctuation and X is null. */
1293 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
1295 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
1298 /* Define the codes that are matched by predicates in aux-output.c. */
1300 #define PREDICATE_CODES \
1301 {"s_operand", { SUBREG, MEM }}, \
1302 {"s_imm_operand", { CONST_INT, CONST_DOUBLE, SUBREG, MEM }}, \
1303 {"bras_sym_operand",{ SYMBOL_REF, CONST }}, \
1304 {"larl_operand", { SYMBOL_REF, CONST, CONST_INT, CONST_DOUBLE }}, \
1305 {"load_multiple_operation", {PARALLEL}}, \
1306 {"store_multiple_operation", {PARALLEL}}, \
1307 {"const0_operand", { CONST_INT, CONST_DOUBLE }}, \
1308 {"s390_plus_operand", { PLUS }},
1311 /* S/390 constant pool breaks the devices in crtstuff.c to control section
1312 in where code resides. We have to write it as asm code. */
1314 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
1315 asm (SECTION_OP "\n\
1317 0: .long\t" USER_LABEL_PREFIX #FUNC " - 0b\n\
1319 bas\t%r14,0(%r3,%r2)\n\
1323 /* Constant Pool for all symbols operands which are changed with
1324 force_const_mem during insn generation (expand_insn). */
1326 extern struct rtx_def
*s390_pool_start_insn
;
1327 extern int s390_pool_count
;
1328 extern int s390_nr_constants
;
1330 /* Function is splitted in chunk, if literal pool could overflow
1331 Value need to be lowered, if problems with displacement overflow. */
1333 #define S390_CHUNK_MAX 0xe00
1334 #define S390_CHUNK_OV 0x1000
1335 #define S390_POOL_MAX 0xe00
1337 #define ASM_OUTPUT_POOL_PROLOGUE(FILE, FUNNAME, fndecl, size) \
1339 register rtx insn; \
1340 struct pool_constant *pool; \
1342 if (s390_pool_count == -1) \
1344 s390_nr_constants = 0; \
1345 for (pool = first_pool; pool; pool = pool->next) \
1346 if (pool->mark) s390_nr_constants++; \
1349 if (first_pool == 0) { \
1350 s390_asm_output_pool_prologue (FILE, FUNNAME, fndecl, size); \
1353 for (pool = first_pool; pool; pool = pool->next) \
1356 insn = s390_pool_start_insn; \
1358 if (insn==NULL_RTX) \
1359 insn = get_insns (); \
1361 insn = NEXT_INSN (insn); \
1362 for (; insn; insn = NEXT_INSN (insn)) { \
1363 if (GET_RTX_CLASS (GET_CODE (insn)) == 'i') { \
1364 if (s390_stop_dump_lit_p (insn)) { \
1365 mark_constants (PATTERN (insn)); \
1368 mark_constants (PATTERN (insn)); \
1372 /* Mark entries referenced by other entries */ \
1373 for (pool = first_pool; pool; pool = pool->next) \
1375 mark_constants (pool->constant); \
1377 s390_asm_output_pool_prologue (FILE, FUNNAME, fndecl, size); \
1380 /* We need to return, because otherwise the pool is deleted of the
1381 constant pool after the first output. */
1383 #define ASM_OUTPUT_POOL_EPILOGUE(FILE, FUNNAME, fndecl, size) return;
1385 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY(FILE, EXP, MODE, ALIGN, LABELNO, WIN) \
1387 if ((s390_pool_count == 0) || (s390_pool_count > 0 && LABELNO >= 0)) \
1389 fprintf (FILE, ".LC%d:\n", LABELNO); \
1390 LABELNO = ~LABELNO; \
1392 if (s390_pool_count > 0) \
1394 fprintf (FILE, ".LC%d_%X:\n", ~LABELNO, s390_pool_count); \
1397 /* Output the value of the constant itself. */ \
1398 switch (GET_MODE_CLASS (MODE)) \
1401 if (GET_CODE (EXP) != CONST_DOUBLE) \
1404 memcpy ((char *) &u, (char *) &CONST_DOUBLE_LOW (EXP), sizeof u); \
1405 assemble_real (u.d, MODE, ALIGN); \
1409 case MODE_PARTIAL_INT: \
1411 && (GET_CODE (EXP) == CONST \
1412 || GET_CODE (EXP) == SYMBOL_REF \
1413 || GET_CODE (EXP) == LABEL_REF )) \
1415 fputs (integer_asm_op (UNITS_PER_WORD, TRUE), FILE); \
1416 s390_output_symbolic_const (FILE, EXP); \
1417 fputc ('\n', (FILE)); \
1421 assemble_integer (EXP, GET_MODE_SIZE (MODE), ALIGN, 1); \
1422 if (GET_MODE_SIZE (MODE) == 1) \
1423 ASM_OUTPUT_SKIP ((FILE), 1); \