1 /* Definitions of target machine for GNU compiler.
2 Hitachi H8/300 version generating coff
3 Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
4 Contributed by Steve Chamberlain (sac@cygnus.com),
5 Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com).
7 This file is part of GNU CC.
9 GNU CC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GNU CC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU CC; see the file COPYING. If not, write to
21 the Free Software Foundation, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* Which cpu to compile for.
25 We use int for CPU_TYPE to avoid lots of casts. */
26 #if 0 /* defined in insn-attr.h, here for documentation */
27 enum attr_cpu
{ CPU_H8300
, CPU_H8300H
};
31 /* Various globals defined in h8300.c. */
33 extern char *h8_push_op
,*h8_pop_op
,*h8_mov_op
;
34 extern char **h8_reg_names
;
36 /* Names to predefine in the preprocessor for this target machine. */
38 #define CPP_PREDEFINES \
39 "-D__LONG_MAX__=2147483647L -D__LONG_LONG_MAX__=2147483647L"
42 "%{!mh:-D__H8300__} %{mh:-D__H8300H__} \
43 %{!mh:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
44 %{mh:-D__SIZE_TYPE__=unsigned\\ long -D__PTRDIFF_TYPE__=long} \
45 %{!mh:-Acpu(h8300) -Amachine(h8300)} %{mh:-Acpu(h8300h) -Amachine(h8300h)} \
46 %{!mint32:-D__INT_MAX__=32767} %{mint32:-D__INT_MAX__=2147483647}"
48 #define LINK_SPEC "%{mh:-m h8300h}"
50 #define LIB_SPEC "%{mrelax:-relax} %{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
52 /* Print subsidiary information on the compiler version in use. */
54 #define TARGET_VERSION fprintf (stderr, " (Hitachi H8/300)");
56 /* Run-time compilation parameters selecting different hardware subsets. */
58 extern int target_flags
;
60 /* Macros used in the machine description to test the flags. */
62 /* Make int's 32 bits. */
63 #define TARGET_INT32 (target_flags & 8)
65 /* Dump recorded insn lengths into the output file. This helps debug the
67 #define TARGET_ADDRESSES (target_flags & 64)
69 /* Pass the first few arguments in registers. */
70 #define TARGET_QUICKCALL (target_flags & 128)
72 /* Pretend byte accesses are slow. */
73 #define TARGET_SLOWBYTE (target_flags & 256)
75 /* Dump each assembler insn's rtl into the output file.
76 This is for debugging the compiler only. */
77 #define TARGET_RTL_DUMP (target_flags & 2048)
79 /* Select between the h8/300 and h8/300h cpus. */
80 #define TARGET_H8300 (! TARGET_H8300H)
81 #define TARGET_H8300H (target_flags & 4096)
83 /* Align all values on the h8/300h the same way as the h8/300. Specifically,
84 32 bit and larger values are aligned on 16 bit boundaries.
85 This is all the hardware requires, but the default is 32 bits for the 300h.
86 ??? Now watch someone add hardware floating point requiring 32 bit
88 #define TARGET_ALIGN_300 (target_flags & 8192)
90 /* Macro to define tables used to set the flags.
91 This is a list in braces of pairs in braces,
92 each pair being { "NAME", VALUE }
93 where VALUE is the bits to set or minus the bits to clear.
94 An empty string NAME is used to identify the default VALUE. */
96 #define TARGET_SWITCHES \
100 {"no-quickcall",-128}, \
106 {"align-300",8192}, \
107 { "", TARGET_DEFAULT}}
109 /* Do things that must be done once at start up. */
111 #define OVERRIDE_OPTIONS \
113 h8300_init_once (); \
116 /* Default target_flags if no switches specified. */
118 #ifndef TARGET_DEFAULT
119 #define TARGET_DEFAULT (128) /* quickcall */
122 /* Show we can debug even without a frame pointer. */
123 /* #define CAN_DEBUG_WITHOUT_FP */
125 /* Define this if addresses of constant functions
126 shouldn't be put through pseudo regs where they can be cse'd.
127 Desirable on machines where ordinary constants are expensive
128 but a CALL with constant address is cheap. */
129 #define NO_FUNCTION_CSE
131 /* Target machine storage layout */
133 /* Define to use software floating point emulator for REAL_ARITHMETIC and
134 decimal <-> binary conversion. */
135 #define REAL_ARITHMETIC
137 /* Define this if most significant bit is lowest numbered
138 in instructions that operate on numbered bit-fields.
139 This is not true on the H8/300. */
140 #define BITS_BIG_ENDIAN 0
142 /* Define this if most significant byte of a word is the lowest numbered. */
143 /* That is true on the H8/300. */
144 #define BYTES_BIG_ENDIAN 1
146 /* Define this if most significant word of a multiword number is lowest
148 This is true on an H8/300 (actually we can make it up, but we choose to
150 #define WORDS_BIG_ENDIAN 1
152 /* Number of bits in an addressable storage unit */
153 #define BITS_PER_UNIT 8
155 /* Width in bits of a "word", which is the contents of a machine register.
156 Note that this is not necessarily the width of data type `int';
157 if using 16-bit ints on a 68000, this would still be 32.
158 But on a machine with 16-bit registers, this would be 16. */
159 #define BITS_PER_WORD (TARGET_H8300H ? 32 : 16)
160 #define MAX_BITS_PER_WORD 32
162 /* Width of a word, in units (bytes). */
163 #define UNITS_PER_WORD (TARGET_H8300H ? 4 : 2)
164 #define MIN_UNITS_PER_WORD 2
166 /* Width in bits of a pointer.
167 See also the macro `Pmode' defined below. */
168 #define POINTER_SIZE (TARGET_H8300H ? 32 : 16)
170 #define SHORT_TYPE_SIZE 16
171 #define INT_TYPE_SIZE (TARGET_INT32 ? 32 : 16)
172 #define LONG_TYPE_SIZE 32
173 #define LONG_LONG_TYPE_SIZE 32
174 #define FLOAT_TYPE_SIZE 32
175 #define DOUBLE_TYPE_SIZE 32
176 #define LONG_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE
178 #define MAX_FIXED_MODE_SIZE 32
180 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
181 #define PARM_BOUNDARY (TARGET_H8300H ? 32 : 16)
183 /* Allocation boundary (in *bits*) for the code of a function. */
184 #define FUNCTION_BOUNDARY 16
186 /* Alignment of field after `int : 0' in a structure. */
187 /* One can argue this should be 32 for -mint32, but since 32 bit ints only
188 need 16 bit alignment, this is left as is so that -mint32 doesn't change
189 structure layouts. */
190 #define EMPTY_FIELD_BOUNDARY 16
192 /* A bitfield declared as `int' forces `int' alignment for the struct. */
193 #define PCC_BITFIELD_TYPE_MATTERS 0
195 /* No data type wants to be aligned rounder than this.
196 32 bit values are aligned as such on the 300h for speed. */
197 #define BIGGEST_ALIGNMENT \
198 ((TARGET_H8300H && ! TARGET_ALIGN_300) ? 32 : 16)
200 /* No structure field wants to be aligned rounder than this. */
201 #define BIGGEST_FIELD_ALIGNMENT \
202 ((TARGET_H8300H && ! TARGET_ALIGN_300) ? 32 : 16)
204 /* The stack goes in 16/32 bit lumps. */
205 #define STACK_BOUNDARY (TARGET_H8300 ? 16 : 32)
207 /* Define this if move instructions will actually fail to work
208 when given unaligned data. */
209 /* On the H8/300, longs can be aligned on halfword boundaries, but not
211 #define STRICT_ALIGNMENT 1
213 /* Standard register usage. */
215 /* Number of actual hardware registers.
216 The hardware registers are assigned numbers for the compiler
217 from 0 to just below FIRST_PSEUDO_REGISTER.
219 All registers that the compiler knows about must be given numbers,
220 even those that are not normally considered general registers.
222 Reg 8 does not correspond to any hardware register, but instead
223 appears in the RTL as an argument pointer prior to reload, and is
224 eliminated during reloading in favor of either the stack or frame
227 #define FIRST_PSEUDO_REGISTER 9
229 /* 1 for registers that have pervasive standard uses
230 and are not available for the register allocator. */
232 #define FIXED_REGISTERS \
233 { 0, 0, 0, 0, 0, 0, 0, 1, 1}
235 /* 1 for registers not available across function calls.
236 These must include the FIXED_REGISTERS and also any
237 registers that can be used without being saved.
238 The latter must include the registers where values are returned
239 and the register where structure-value addresses are passed.
240 Aside from that, you can include as many other registers as you
243 h8 destroys r0,r1,r2,r3. */
245 #define CALL_USED_REGISTERS \
246 { 1, 1, 1, 1, 0, 0, 0, 1, 1 }
248 #define REG_ALLOC_ORDER \
249 { 2, 3, 0, 1, 4, 5, 6, 7, 8}
251 /* Return number of consecutive hard regs needed starting at reg REGNO
252 to hold something of mode MODE.
254 This is ordinarily the length in words of a value of mode MODE
255 but can be less for certain modes in special long registers. */
257 #define HARD_REGNO_NREGS(REGNO, MODE) \
258 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
260 /* Value is 1 if hard register REGNO can hold a value of machine-mode
263 H8/300: If an even reg, then anything goes. Otherwise the mode must be QI
265 H8/300H: Anything goes. */
267 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
268 (TARGET_H8300 ? (((REGNO)&1)==0) || (MODE==HImode) || (MODE==QImode) \
271 /* Value is 1 if it is a good idea to tie two pseudo registers
272 when one has mode MODE1 and one has mode MODE2.
273 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
274 for any hard reg, then this must be 0 for correct output. */
275 #define MODES_TIEABLE_P(MODE1, MODE2) ((MODE1) == (MODE2))
277 /* Specify the registers used for certain standard purposes.
278 The values of these macros are register numbers. */
280 /* H8/300 pc is not overloaded on a register. */
282 /*#define PC_REGNUM 15*/
284 /* Register to use for pushing function arguments. */
285 #define STACK_POINTER_REGNUM 7
287 /* Base register for access to local variables of the function. */
288 #define FRAME_POINTER_REGNUM 6
290 /* Value should be nonzero if functions must have frame pointers.
291 Zero means the frame pointer need not be set up (and parms
292 may be accessed via the stack pointer) in functions that seem suitable.
293 This is computed in `reload', in reload1.c. */
294 #define FRAME_POINTER_REQUIRED 0
296 /* Base register for access to arguments of the function. */
297 #define ARG_POINTER_REGNUM 8
299 /* Register in which static-chain is passed to a function. */
300 #define STATIC_CHAIN_REGNUM 3
302 /* Define the classes of registers for register constraints in the
303 machine description. Also define ranges of constants.
305 One of the classes must always be named ALL_REGS and include all hard regs.
306 If there is more than one class, another class must be named NO_REGS
307 and contain no registers.
309 The name GENERAL_REGS must be the name of a class (or an alias for
310 another name such as ALL_REGS). This is the class of registers
311 that is allowed by "g" or "r" in a register constraint.
312 Also, registers outside this class are allocated only when
313 instructions express preferences for them.
315 The classes must be numbered in nondecreasing order; that is,
316 a larger-numbered class must never be contained completely
317 in a smaller-numbered class.
319 For any two classes, it is very desirable that there be another
320 class that represents their union. */
322 /* The h8 has only one kind of register, but we mustn't do byte by
323 byte operations on the sp, so we keep it as a different class */
325 enum reg_class
{ NO_REGS
, LONG_REGS
, GENERAL_REGS
, SP_REG
, SP_AND_G_REG
, ALL_REGS
, LIM_REG_CLASSES
};
327 #define N_REG_CLASSES (int) LIM_REG_CLASSES
329 /* Give names of register classes as strings for dump file. */
331 #define REG_CLASS_NAMES \
332 {"NO_REGS", "LONG_REGS", "GENERAL_REGS", "SP_REG", "SP_AND_G_REG", "ALL_REGS", "LIM_REGS" }
334 /* Define which registers fit in which classes.
335 This is an initializer for a vector of HARD_REG_SET
336 of length N_REG_CLASSES. */
338 #define REG_CLASS_CONTENTS \
340 0x07f, /* LONG_REGS */ \
341 0x07f, /* GENERAL_REGS */ \
342 0x080, /* SP_REG */ \
343 0x0ff, /* SP_AND_G_REG */ \
344 0x1ff, /* ALL_REGS */ \
347 /* The same information, inverted:
348 Return the class number of the smallest class containing
349 reg number REGNO. This could be a conditional expression
350 or could index an array. */
352 #define REGNO_REG_CLASS(REGNO) \
353 ((REGNO) < 7 ? LONG_REGS : \
354 (REGNO) == 7 ? SP_REG : \
357 /* The class value for index registers, and the one for base regs. */
359 #define INDEX_REG_CLASS NO_REGS
360 #define BASE_REG_CLASS GENERAL_REGS
362 /* Get reg_class from a letter such as appears in the machine description. */
364 #define REG_CLASS_FROM_LETTER(C) \
365 ((C) == 'a' ? (SP_REG) : (C) == 'l' ? (LONG_REGS) : (NO_REGS))
367 /* The letters I, J, K, L, M, N, O, P in a register constraint string
368 can be used to stand for particular ranges of immediate operands.
369 This macro defines what the ranges are.
370 C is the letter, and VALUE is a constant value.
371 Return 1 if VALUE is in the range specified by C. */
373 #define CONST_OK_FOR_I(VALUE) ((VALUE) == 0)
374 #define CONST_OK_FOR_J(VALUE) ((unsigned) (VALUE) < 256)
375 #define CONST_OK_FOR_K(VALUE) (((VALUE) == 1) || (VALUE) == 2)
376 #define CONST_OK_FOR_L(VALUE) (((VALUE) == -1) || (VALUE) == -2)
377 #define CONST_OK_FOR_M(VALUE) (((VALUE) == 3) || (VALUE) == 4)
378 #define CONST_OK_FOR_N(VALUE) (((VALUE) == -3) || (VALUE) == -4)
379 #define CONST_OK_FOR_O(VALUE) (ok_for_bclr (VALUE))
380 #define CONST_OK_FOR_P(VALUE) (small_power_of_two (VALUE))
382 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
383 ((C) == 'I' ? CONST_OK_FOR_I (VALUE) : \
384 (C) == 'J' ? CONST_OK_FOR_J (VALUE) : \
385 (C) == 'K' ? CONST_OK_FOR_K (VALUE) : \
386 (C) == 'L' ? CONST_OK_FOR_L (VALUE) : \
387 (C) == 'M' ? CONST_OK_FOR_M (VALUE) : \
388 (C) == 'N' ? CONST_OK_FOR_N (VALUE) : \
389 (C) == 'O' ? CONST_OK_FOR_O (VALUE) : \
390 (C) == 'P' ? CONST_OK_FOR_P(VALUE) : \
393 /* Similar, but for floating constants, and defining letters G and H.
394 Here VALUE is the CONST_DOUBLE rtx itself.
396 `G' is a floating-point zero. */
398 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
399 ((C) == 'G' ? (VALUE) == CONST0_RTX (DFmode) \
402 /* Given an rtx X being reloaded into a reg required to be
403 in class CLASS, return the class of reg to actually use.
404 In general this is just CLASS; but on some machines
405 in some cases it is preferable to use a more restrictive class. */
407 #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
409 /* Return the maximum number of consecutive registers
410 needed to represent mode MODE in a register of class CLASS. */
412 /* On the H8, this is the size of MODE in words. */
414 #define CLASS_MAX_NREGS(CLASS, MODE) \
415 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
417 /* Any SI register to register move may need to be reloaded,
418 so define REGISTER_MOVE_COST to be > 2 so that reload never
421 #define REGISTER_MOVE_COST(CLASS1, CLASS2) 3
423 /* Stack layout; function entry, exit and calling. */
425 /* Define this if pushing a word on the stack
426 makes the stack pointer a smaller address. */
428 #define STACK_GROWS_DOWNWARD
430 /* Define this if the nominal address of the stack frame
431 is at the high-address end of the local variables;
432 that is, each additional local variable allocated
433 goes at a more negative offset in the frame. */
435 #define FRAME_GROWS_DOWNWARD
437 /* Offset within stack frame to start allocating local variables at.
438 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
439 first local allocated. Otherwise, it is the offset to the BEGINNING
440 of the first local allocated. */
442 #define STARTING_FRAME_OFFSET 0
444 /* If we generate an insn to push BYTES bytes,
445 this says how many the stack pointer really advances by.
447 On the H8/300, @-sp really pushes a byte if you ask it to - but that's
448 dangerous, so we claim that it always pushes a word, then we catch
449 the mov.b rx,@-sp and turn it into a mov.w rx,@-sp on output.
451 On the H8/300h, we simplify TARGET_QUICKCALL by setting this to 4 and doing
454 #define PUSH_ROUNDING(BYTES) \
455 (((BYTES) + PARM_BOUNDARY/8 - 1) & -PARM_BOUNDARY/8)
457 /* Offset of first parameter from the argument pointer register value. */
458 /* Is equal to the size of the saved fp + pc, even if an fp isn't
459 saved since the value is used before we know. */
461 #define FIRST_PARM_OFFSET(FNDECL) 0
463 /* Value is the number of bytes of arguments automatically
464 popped when returning from a subroutine call.
465 FUNDECL is the declaration node of the function (as a tree),
466 FUNTYPE is the data type of the function (as a tree),
467 or for a library call it is an identifier node for the subroutine name.
468 SIZE is the number of bytes of arguments passed on the stack.
470 On the H8 the return does not pop anything. */
472 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
474 /* Definitions for register eliminations.
476 This is an array of structures. Each structure initializes one pair
477 of eliminable registers. The "from" register number is given first,
478 followed by "to". Eliminations of the same "from" register are listed
479 in order of preference.
481 We have two registers that can be eliminated on the h8300. First, the
482 frame pointer register can often be eliminated in favor of the stack
483 pointer register. Secondly, the argument pointer register can always be
484 eliminated; it is replaced with either the stack or frame pointer. */
486 #define ELIMINABLE_REGS \
487 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
488 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
489 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
491 /* Given FROM and TO register numbers, say whether this elimination is allowed.
492 Frame pointer elimination is automatically handled.
494 For the h8300, if frame pointer elimination is being done, we would like to
495 convert ap into sp, not fp.
497 All other eliminations are valid. */
499 #define CAN_ELIMINATE(FROM, TO) \
500 ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \
501 ? ! frame_pointer_needed \
504 /* Define the offset between two registers, one to be eliminated, and the other
505 its replacement, at the start of a routine. */
507 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
508 OFFSET = initial_offset (FROM, TO)
510 /* Define how to find the value returned by a function.
511 VALTYPE is the data type of the value (as a tree).
512 If the precise function being called is known, FUNC is its FUNCTION_DECL;
513 otherwise, FUNC is 0.
515 On the H8 the return value is in R0/R1. */
517 #define FUNCTION_VALUE(VALTYPE, FUNC) \
518 gen_rtx (REG, TYPE_MODE (VALTYPE), 0)
520 /* Define how to find the value returned by a library function
521 assuming the value has mode MODE. */
523 /* On the h8 the return value is in R0/R1 */
525 #define LIBCALL_VALUE(MODE) \
526 gen_rtx (REG, MODE, 0)
528 /* 1 if N is a possible register number for a function value.
529 On the H8, R0 is the only register thus used. */
531 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
533 /* Define this if PCC uses the nonreentrant convention for returning
534 structure and union values. */
536 /*#define PCC_STATIC_STRUCT_RETURN*/
538 /* 1 if N is a possible register number for function argument passing.
539 On the H8, no registers are used in this way. */
540 /* ??? What about TARGET_QUICKCALL? */
542 #define FUNCTION_ARG_REGNO_P(N) 0
544 /* Register in which address to store a structure value
545 is passed to a function. */
547 #define STRUCT_VALUE 0
549 /* Return true if X should be returned in memory. */
550 /* ??? This will return small structs in regs. */
551 #define RETURN_IN_MEMORY(X) (GET_MODE_SIZE (TYPE_MODE (X)) > 4)
553 /* When defined, the compiler allows registers explicitly used in the
554 rtl to be used as spill registers but prevents the compiler from
555 extending the lifetime of these registers. */
557 #define SMALL_REGISTER_CLASSES
559 /* Define a data type for recording info about an argument list
560 during the scan of that argument list. This data type should
561 hold all necessary information about the function itself
562 and about the args processed so far, enough to enable macros
563 such as FUNCTION_ARG to determine where the next arg should go.
565 On the H8/300, this is a two item struct, the first is the number of bytes
566 scanned so far and the second is the rtx of the called library
569 #define CUMULATIVE_ARGS struct cum_arg
570 struct cum_arg
{ int nbytes
; struct rtx_def
* libcall
; };
572 /* Initialize a variable CUM of type CUMULATIVE_ARGS
573 for a call to a function whose data type is FNTYPE.
574 For a library call, FNTYPE is 0.
576 On the H8/300, the offset starts at 0. */
578 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \
579 ((CUM).nbytes = 0, (CUM).libcall = LIBNAME)
581 /* Update the data in CUM to advance over an argument
582 of mode MODE and data type TYPE.
583 (TYPE is null for libcalls where that information may not be available.) */
585 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
586 ((CUM).nbytes += ((MODE) != BLKmode \
587 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD \
588 : (int_size_in_bytes (TYPE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD))
590 /* Define where to put the arguments to a function.
591 Value is zero to push the argument on the stack,
592 or a hard register in which to store the argument.
594 MODE is the argument's machine mode.
595 TYPE is the data type of the argument (as a tree).
596 This is null for libcalls where that information may
598 CUM is a variable of type CUMULATIVE_ARGS which gives info about
599 the preceding args and about the function being called.
600 NAMED is nonzero if this argument is a named parameter
601 (otherwise it is an extra parameter matching an ellipsis). */
603 /* On the H8/300 all normal args are pushed, unless -mquickcall in which
604 case the first 3 arguments are passed in registers.
605 See function `function_arg'. */
607 struct rtx_def
*function_arg();
608 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
609 function_arg (&CUM, MODE, TYPE, NAMED)
611 /* Perform any needed actions needed for a function that is receiving a
612 variable number of arguments. */
614 extern int current_function_anonymous_args
;
615 #define SETUP_INCOMING_VARARGS(ASF, MODE, TYPE, PAS, ST) \
616 current_function_anonymous_args = 1;
618 /* Generate assembly output for the start of a function. */
620 #define FUNCTION_PROLOGUE(FILE, SIZE) \
621 function_prologue (FILE, SIZE)
623 /* Output assembler code to FILE to increment profiler label # LABELNO
624 for profiling a function entry. */
626 #define FUNCTION_PROFILER(FILE, LABELNO) \
627 fprintf (FILE, "\t%s\t#LP%d,%s\n\tjsr @mcount\n", \
628 h8_mov_op, (LABELNO), h8_reg_names[0]);
630 /* Output assembler code to FILE to initialize this source file's
631 basic block profiling info, if that has not already been done. */
632 /* ??? @LPBX0 is moved into r0 twice. */
634 #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
635 fprintf (FILE, "\t%s\t%s\n\t%s\t@LPBX0,%s\n\tbne LPI%d\n\t%s\t@LPBX0,%s\n\t%s\t%s\n\tjsr\t@__bb_init_func\nLPI%d:\t%s\t%s\n", \
636 h8_push_op, h8_reg_names[0], \
637 h8_mov_op, h8_reg_names[0], \
639 h8_mov_op, h8_reg_names[0], \
640 h8_push_op, h8_reg_names[0], \
642 h8_pop_op, h8_reg_names[0]);
644 /* Output assembler code to FILE to increment the entry-count for
645 the BLOCKNO'th basic block in this source file. This is a real pain in the
646 sphincter on a VAX, since we do not want to change any of the bits in the
647 processor status word. The way it is done here, it is pushed onto the stack
648 before any flags have changed, and then the stack is fixed up to account for
649 the fact that the instruction to restore the flags only reads a word.
650 It may seem a bit clumsy, but at least it works. */
651 /* ??? This one needs work. */
653 #define BLOCK_PROFILER(FILE, BLOCKNO) \
654 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", \
657 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
658 the stack pointer does not matter. The value is tested only in
659 functions that have frame pointers.
660 No definition is equivalent to always zero. */
662 #define EXIT_IGNORE_STACK 0
664 /* This macro generates the assembly code for function exit,
665 on machines that need it. If FUNCTION_EPILOGUE is not defined
666 then individual return instructions are generated for each
667 return statement. Args are same as for FUNCTION_PROLOGUE. */
669 #define FUNCTION_EPILOGUE(FILE, SIZE) \
670 function_epilogue (FILE, SIZE)
672 /* Output assembler code for a block containing the constant parts
673 of a trampoline, leaving space for the variable parts.
677 1 0000 7900xxxx mov.w #0x1234,r3
678 2 0004 5A00xxxx jmp @0x1234
683 2 0000 7A00xxxxxxxx mov.l #0x12345678,er3
684 3 0006 5Axxxxxx jmp @0x123456
688 #define TRAMPOLINE_TEMPLATE(FILE) \
692 fprintf (FILE, "\tmov.w #0x1234,r3\n"); \
693 fprintf (FILE, "\tjmp @0x1234\n"); \
697 fprintf (FILE, "\tmov.l #0x12345678,er3\n"); \
698 fprintf (FILE, "\tjmp @0x123456\n"); \
702 /* Length in units of the trampoline for entering a nested function. */
704 #define TRAMPOLINE_SIZE (TARGET_H8300 ? 8 : 12)
706 /* Emit RTL insns to initialize the variable parts of a trampoline.
707 FNADDR is an RTX for the address of the function's pure code.
708 CXT is an RTX for the static chain value for the function. */
710 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
712 enum machine_mode mode = TARGET_H8300H ? SImode : HImode; \
713 emit_move_insn (gen_rtx (MEM, mode, plus_constant ((TRAMP), 2)), CXT); \
714 emit_move_insn (gen_rtx (MEM, mode, plus_constant ((TRAMP), 6)), FNADDR); \
716 emit_move_insn (gen_rtx (MEM, QImode, plus_constant ((TRAMP), 6)), GEN_INT (0x5A)); \
719 /* Addressing modes, and classification of registers for them. */
721 #define HAVE_POST_INCREMENT
722 /*#define HAVE_POST_DECREMENT */
724 #define HAVE_PRE_DECREMENT
725 /*#define HAVE_PRE_INCREMENT */
727 /* Macros to check register numbers against specific register classes. */
729 /* These assume that REGNO is a hard or pseudo reg number.
730 They give nonzero only if REGNO is a hard reg of the suitable class
731 or a pseudo reg currently allocated to a suitable hard reg.
732 Since they use reg_renumber, they are safe only once reg_renumber
733 has been allocated, which happens in local-alloc.c. */
735 #define REGNO_OK_FOR_INDEX_P(regno) 0
737 #define REGNO_OK_FOR_BASE_P(regno) \
738 ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
740 /* Maximum number of registers that can appear in a valid memory address. */
742 #define MAX_REGS_PER_ADDRESS 1
744 /* 1 if X is an rtx for a constant that is a valid address. */
746 #define CONSTANT_ADDRESS_P(X) \
747 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
748 || (GET_CODE (X) == CONST_INT \
749 /* We handle signed and unsigned offsets here. */ \
750 && INTVAL (X) > (TARGET_H8300 ? -0x10000 : -0x1000000) \
751 && INTVAL (X) < (TARGET_H8300 ? 0x10000 : 0x1000000)) \
752 || GET_CODE (X) == CONST \
753 || GET_CODE (X) == HIGH)
755 /* Nonzero if the constant value X is a legitimate general operand.
756 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
758 #define LEGITIMATE_CONSTANT_P(X) (GET_CODE (X) != CONST_DOUBLE)
760 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
761 and check its validity for a certain class.
762 We have two alternate definitions for each of them.
763 The usual definition accepts all pseudo regs; the other rejects
764 them unless they have been allocated suitable hard regs.
765 The symbol REG_OK_STRICT causes the latter definition to be used.
767 Most source files want to accept pseudo regs in the hope that
768 they will get allocated to the class that the insn wants them to be in.
769 Source files for reload pass need to be strict.
770 After reload, it makes no difference, since pseudo regs have
771 been eliminated by then. */
773 #ifndef REG_OK_STRICT
775 /* Nonzero if X is a hard reg that can be used as an index
776 or if it is a pseudo reg. */
777 #define REG_OK_FOR_INDEX_P(X) 0
778 /* Nonzero if X is a hard reg that can be used as a base reg
779 or if it is a pseudo reg. */
780 #define REG_OK_FOR_BASE_P(X) 1
781 #define REG_OK_FOR_INDEX_P_STRICT(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
782 #define REG_OK_FOR_BASE_P_STRICT(X) REGNO_OK_FOR_BASE_P (REGNO (X))
787 /* Nonzero if X is a hard reg that can be used as an index. */
788 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
789 /* Nonzero if X is a hard reg that can be used as a base reg. */
790 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
795 /* Extra constraints - 'U' if for an operand valid for a bset
796 destination; i.e. a register or register indirect target. */
797 #define OK_FOR_U(OP) \
798 ((GET_CODE (OP) == REG && REG_OK_FOR_BASE_P (OP)) \
799 || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == REG \
800 && REG_OK_FOR_BASE_P (XEXP (OP, 0))))
802 #define EXTRA_CONSTRAINT(OP, C) \
803 ((C) == 'U' ? OK_FOR_U (OP) : 0)
805 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
806 that is a valid memory address for an instruction.
807 The MODE argument is the machine mode for the MEM expression
808 that wants to use this address.
810 The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
811 except for CONSTANT_ADDRESS_P which is actually
814 On the H8/300, a legitimate address has the form
815 REG, REG+CONSTANT_ADDRESS or CONSTANT_ADDRESS. */
817 /* Accept either REG or SUBREG where a register is valid. */
819 #define RTX_OK_FOR_BASE_P(X) \
820 ((REG_P (X) && REG_OK_FOR_BASE_P (X)) \
821 || (GET_CODE (X) == SUBREG && REG_P (SUBREG_REG (X)) \
822 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
824 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
825 if (RTX_OK_FOR_BASE_P (X)) goto ADDR; \
826 if (CONSTANT_ADDRESS_P (X)) goto ADDR; \
827 if (GET_CODE (X) == PLUS \
828 && CONSTANT_ADDRESS_P (XEXP (X, 1)) \
829 && RTX_OK_FOR_BASE_P (XEXP (X, 0))) goto ADDR;
831 /* Try machine-dependent ways of modifying an illegitimate address
832 to be legitimate. If we find one, return the new, valid address.
833 This macro is used in only one place: `memory_address' in explow.c.
835 OLDX is the address as it was before break_out_memory_refs was called.
836 In some cases it is useful to look at this to decide what needs to be done.
838 MODE and WIN are passed so that this macro can use
839 GO_IF_LEGITIMATE_ADDRESS.
841 It is always safe for this macro to do nothing. It exists to recognize
842 opportunities to optimize the output.
844 For the H8/300, don't do anything. */
846 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {}
848 /* Go to LABEL if ADDR (a legitimate address expression)
849 has an effect that depends on the machine mode it is used for.
851 On the H8/300, the predecrement and postincrement address depend thus
852 (the amount of decrement or increment being the length of the operand)
853 and all indexed address depend thus (because the index scale factor
854 is the length of the operand). */
856 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
857 if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL;
859 /* Specify the machine mode that this machine uses
860 for the index in the tablejump instruction. */
861 #define CASE_VECTOR_MODE Pmode
863 /* Define this if the case instruction expects the table
864 to contain offsets from the address of the table.
865 Do not define this if the table should contain absolute addresses. */
866 /*#define CASE_VECTOR_PC_RELATIVE*/
868 /* Define this if the case instruction drops through after the table
869 when the index is out of range. Don't define it if the case insn
870 jumps to the default label instead. */
871 #define CASE_DROPS_THROUGH
873 /* Specify the tree operation to be used to convert reals to integers. */
874 #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
876 /* This is the kind of divide that is easiest to do in the general case. */
877 #define EASY_DIV_EXPR TRUNC_DIV_EXPR
879 /* Define this as 1 if `char' should by default be signed; else as 0.
881 On the H8/300, sign extension is expensive, so we'll say that chars
883 #define DEFAULT_SIGNED_CHAR 0
885 /* This flag, if defined, says the same insns that convert to a signed fixnum
886 also convert validly to an unsigned one. */
887 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC
889 /* Max number of bytes we can move from memory to memory
890 in one reasonably fast instruction. */
891 #define MOVE_MAX (TARGET_H8300H ? 4 : 2)
892 #define MAX_MOVE_MAX 4
894 /* Define this if zero-extension is slow (more than one real instruction). */
895 /* #define SLOW_ZERO_EXTEND */
897 /* Nonzero if access to memory by bytes is slow and undesirable. */
898 #define SLOW_BYTE_ACCESS TARGET_SLOWBYTE
900 /* Define if shifts truncate the shift count
901 which implies one can omit a sign-extension or zero-extension
903 /* #define SHIFT_COUNT_TRUNCATED */
905 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
906 is done just by pretending it is already truncated. */
907 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
909 /* Specify the machine mode that pointers have.
910 After generation of rtl, the compiler makes no further distinction
911 between pointers and any other objects of this machine mode. */
912 #define Pmode (TARGET_H8300H ? SImode : HImode)
915 We use longs for the 300h because ints can be 16 or 32.
916 GCC requires SIZE_TYPE to be the same size as pointers. */
917 #define NO_BUILTIN_SIZE_TYPE
918 #define NO_BUILTIN_PTRDIFF_TYPE
919 #define SIZE_TYPE (TARGET_H8300 ? "unsigned int" : "long unsigned int")
920 #define PTRDIFF_TYPE (TARGET_H8300 ? "int" : "long int")
922 #define WCHAR_TYPE "short unsigned int"
923 #define WCHAR_TYPE_SIZE 16
924 #define MAX_WCHAR_TYPE_SIZE 16
926 /* A function address in a call instruction
927 is a byte address (for indexing purposes)
928 so give the MEM rtx a byte's mode. */
929 #define FUNCTION_MODE QImode
931 /* Compute the cost of computing a constant rtl expression RTX
932 whose rtx-code is CODE. The body of this macro is a portion
933 of a switch statement. If the code is computed here,
934 return it with a return statement. Otherwise, break from the switch. */
936 #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
937 default: { int _zxy= const_costs(RTX, CODE); \
938 if(_zxy) return _zxy; break;}
940 #define BRANCH_COST 0
942 /* We say that MOD and DIV are so cheap because otherwise we'll
943 generate some really horrible code for division of a power of two. */
945 /* Provide the costs of a rtl expression. This is in the body of a
947 /* ??? Shifts need to have a *much* higher cost than this. */
949 #define RTX_COSTS(RTX,CODE,OUTER_CODE) \
960 if (GET_MODE (RTX) == HImode) return 2; \
963 /* Tell final.c how to eliminate redundant test instructions. */
965 /* Here we define machine-dependent flags and fields in cc_status
966 (see `conditions.h'). No extra ones are needed for the vax. */
968 /* Store in cc_status the expressions
969 that the condition codes will describe
970 after execution of an instruction whose pattern is EXP.
971 Do not alter them if the instruction would not alter the cc's. */
973 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
974 #define CC_DONE_CBIT 0400
976 #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \
978 if (cc_status.flags & CC_NO_OVERFLOW) \
983 /* Control the assembler format that we output. */
985 #define ASM_IDENTIFY_GCC /* nothing */
987 /* Output at beginning/end of assembler file. */
989 #define ASM_FILE_START(FILE) asm_file_start(FILE)
991 #define ASM_FILE_END(FILE) asm_file_end(FILE)
993 /* Output to assembler file text saying following lines
994 may contain character constants, extra white space, comments, etc. */
996 #define ASM_APP_ON "; #APP\n"
998 /* Output to assembler file text saying following lines
999 no longer contain unusual constructs. */
1001 #define ASM_APP_OFF "; #NO_APP\n"
1003 #define FILE_ASM_OP "\t.file\n"
1004 #define IDENT_ASM_OP "\t.ident\n"
1006 /* The assembler op to get a word, 2 bytes for the H8/300, 4 for H8/300H. */
1007 #define ASM_WORD_OP (TARGET_H8300 ? ".word" : ".long")
1009 /* Output before read-only data. */
1011 #define TEXT_SECTION_ASM_OP "\t.section .text"
1012 #define DATA_SECTION_ASM_OP "\t.section .data"
1013 #define BSS_SECTION_ASM_OP "\t.section .bss"
1014 #define INIT_SECTION_ASM_OP "\t.section .init"
1015 #define CTORS_SECTION_ASM_OP "\t.section .ctors"
1016 #define DTORS_SECTION_ASM_OP "\t.section .dtors"
1018 #define EXTRA_SECTIONS in_ctors, in_dtors
1020 #define EXTRA_SECTION_FUNCTIONS \
1025 if (in_section != in_ctors) \
1027 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
1028 in_section = in_ctors; \
1035 if (in_section != in_dtors) \
1037 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
1038 in_section = in_dtors; \
1042 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
1043 do { ctors_section(); \
1044 fprintf(FILE, "\t%s\t_%s\n", ASM_WORD_OP, NAME); } while (0)
1046 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
1047 do { dtors_section(); \
1048 fprintf(FILE, "\t%s\t_%s\n", ASM_WORD_OP, NAME); } while (0)
1050 #undef DO_GLOBAL_CTORS_BODY
1051 #define DO_GLOBAL_CTORS_BODY \
1053 typedef (*pfunc)(); \
1054 extern pfunc __ctors[]; \
1055 extern pfunc __ctors_end[]; \
1057 for (p = __ctors_end; p > __ctors; ) \
1063 #undef DO_GLOBAL_DTORS_BODY
1064 #define DO_GLOBAL_DTORS_BODY \
1066 typedef (*pfunc)(); \
1067 extern pfunc __dtors[]; \
1068 extern pfunc __dtors_end[]; \
1070 for (p = __dtors; p < __dtors_end; p++) \
1076 /* How to refer to registers in assembler output.
1077 This sequence is indexed by compiler's hard-register-number (see above). */
1079 #define REGISTER_NAMES \
1080 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "sp", "ap"}
1082 #define ADDITIONAL_REGISTER_NAMES { { "r7", 7 } }
1084 /* How to renumber registers for dbx and gdb.
1085 H8/300 needs no change in the numeration. */
1087 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1089 #define SDB_DEBUGGING_INFO
1090 #define SDB_DELIM "\n"
1092 /* Support -gstabs. */
1094 #include "dbxcoff.h"
1096 /* A C statement to output something to the assembler file to switch to section
1097 NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
1098 NULL_TREE. Some target formats do not support arbitrary sections. Do not
1099 define this macro in such cases. */
1101 #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \
1102 fprintf (FILE, "\t.section %s\n", NAME)
1104 /* This is how to output the definition of a user-level label named NAME,
1105 such as the label on a static function or variable NAME. */
1107 #define ASM_OUTPUT_LABEL(FILE, NAME) \
1108 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1110 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)
1112 /* This is how to output a command to make the user-level label named NAME
1113 defined for reference from other files. */
1115 #define ASM_GLOBALIZE_LABEL(FILE, NAME) \
1116 do { fputs ("\t.global ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
1118 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1119 ASM_OUTPUT_LABEL(FILE, NAME)
1121 /* This is how to output a reference to a user-level label named NAME.
1122 `assemble_name' uses this. */
1124 #define ASM_OUTPUT_LABELREF(FILE, NAME) \
1125 fprintf (FILE, "_%s", NAME)
1127 /* This is how to output an internal numbered label where
1128 PREFIX is the class of label and NUM is the number within the class. */
1130 #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
1131 fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
1133 /* This is how to store into the string LABEL
1134 the symbol_ref name of an internal numbered label where
1135 PREFIX is the class of label and NUM is the number within the class.
1136 This is suitable for output with `assemble_name'. */
1138 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
1139 sprintf (LABEL, "*.%s%d", PREFIX, NUM)
1141 /* This is how to output an assembler line defining a `double' constant.
1142 It is .dfloat or .gfloat, depending. */
1144 #define ASM_OUTPUT_DOUBLE(FILE, VALUE) \
1145 do { char dstr[30]; \
1146 REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
1147 fprintf (FILE, "\t.double %s\n", dstr); \
1151 /* This is how to output an assembler line defining a `float' constant. */
1152 #define ASM_OUTPUT_FLOAT(FILE, VALUE) \
1153 do { char dstr[30]; \
1154 REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
1155 fprintf (FILE, "\t.float %s\n", dstr); \
1158 /* This is how to output an assembler line defining an `int' constant. */
1160 #define ASM_OUTPUT_INT(FILE, VALUE) \
1161 ( fprintf (FILE, "\t.long "), \
1162 output_addr_const (FILE, (VALUE)), \
1163 fprintf (FILE, "\n"))
1165 /* Likewise for `char' and `short' constants. */
1167 #define ASM_OUTPUT_SHORT(FILE, VALUE) \
1168 ( fprintf (FILE, "\t.word "), \
1169 output_addr_const (FILE, (VALUE)), \
1170 fprintf (FILE, "\n"))
1172 #define ASM_OUTPUT_CHAR(FILE, VALUE) \
1173 ( fprintf (FILE, "\t.byte "), \
1174 output_addr_const (FILE, (VALUE)), \
1175 fprintf (FILE, "\n"))
1177 /* This is how to output an assembler line for a numeric constant byte. */
1178 #define ASM_OUTPUT_BYTE(FILE, VALUE) \
1179 fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
1181 /* This is how to output an insn to push a register on the stack.
1182 It need not be very fast code. */
1184 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
1185 fprintf (FILE, "\t%s\t%s\n", h8_push_op, h8_reg_names[REGNO])
1187 /* This is how to output an insn to pop a register from the stack.
1188 It need not be very fast code. */
1190 #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
1191 fprintf (FILE, "\t%s\t%s\n", h8_pop_op, h8_reg_names[REGNO])
1193 /* This is how to output an element of a case-vector that is absolute. */
1195 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1196 asm_fprintf (FILE, "\t%s .L%d\n", ASM_WORD_OP, VALUE)
1198 /* This is how to output an element of a case-vector that is relative. */
1200 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1201 fprintf (FILE, "\t%s .L%d-.L%d\n", ASM_WORD_OP, VALUE, REL)
1203 /* This is how to output an assembler line
1204 that says to advance the location counter
1205 to a multiple of 2**LOG bytes. */
1207 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1209 fprintf (FILE, "\t.align %d\n", (LOG))
1211 /* This is how to output an assembler line
1212 that says to advance the location counter by SIZE bytes. */
1214 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1215 fprintf(FILE, "%s\t \"%s\"\n", IDENT_ASM_OP, NAME)
1217 #define ASM_OUTPUT_SKIP(FILE, SIZE) \
1218 fprintf (FILE, "\t.space %d\n", (SIZE))
1220 /* This says how to output an assembler line
1221 to define a global common symbol. */
1223 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1224 ( fputs ("\t.comm ", (FILE)), \
1225 assemble_name ((FILE), (NAME)), \
1226 fprintf ((FILE), ",%d\n", (SIZE)))
1228 /* This says how to output the assembler to define a global
1229 uninitialized but not common symbol.
1230 Try to use asm_output_bss to implement this macro. */
1232 #define ASM_OUTPUT_BSS(FILE, NAME, SIZE, ROUNDED) \
1233 asm_output_bss ((FILE), (NAME), (SIZE), (ROUNDED))
1235 /* This says how to output an assembler line
1236 to define a local common symbol. */
1238 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \
1239 ( fputs ("\t.lcomm ", (FILE)), \
1240 assemble_name ((FILE), (NAME)), \
1241 fprintf ((FILE), ",%d\n", (SIZE)))
1243 /* Store in OUTPUT a string (made with alloca) containing
1244 an assembler-name for a local static variable named NAME.
1245 LABELNO is an integer which is different for each call. */
1247 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
1248 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
1249 sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))
1251 /* Define the parentheses used to group arithmetic operations
1252 in assembler code. */
1254 #define ASM_OPEN_PAREN "("
1255 #define ASM_CLOSE_PAREN ")"
1257 /* Define results of standard character escape sequences. */
1258 #define TARGET_BELL 007
1259 #define TARGET_BS 010
1260 #define TARGET_TAB 011
1261 #define TARGET_NEWLINE 012
1262 #define TARGET_VT 013
1263 #define TARGET_FF 014
1264 #define TARGET_CR 015
1266 /* Print an instruction operand X on file FILE.
1267 look in h8300.c for details */
1269 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
1272 #define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE,X,CODE)
1274 /* Print a memory operand whose address is X, on file FILE.
1275 This uses a function in output-vax.c. */
1277 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
1279 /* Define this macro if you want to implement any pragmas. If defined, it
1280 should be a C expression to be executed when #pragma is seen. The
1281 argument STREAM is the stdio input stream from which the source
1282 text can be read. CH is the first character after the #pragma. The
1283 result of the expression is the terminating character found
1284 (newline or EOF). */
1285 #define HANDLE_PRAGMA(FILE, CH) handle_pragma (FILE, CH)
1287 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
1289 /* Define this macro if GNU CC should generate calls to the System V
1290 (and ANSI C) library functions `memcpy' and `memset' rather than
1291 the BSD functions `bcopy' and `bzero'. */
1293 #define TARGET_MEM_FUNCTIONS 1
1295 #define MULHI3_LIBCALL "__mulhi3"
1296 #define DIVHI3_LIBCALL "__divhi3"
1297 #define UDIVHI3_LIBCALL "__udivhi3"
1298 #define MODHI3_LIBCALL "__modhi3"
1299 #define UMODHI3_LIBCALL "__umodhi3"
1301 /* Perform target dependent optabs initialization. */
1303 #define INIT_TARGET_OPTABS \
1305 smul_optab->handlers[(int) HImode].libfunc \
1306 = gen_rtx (SYMBOL_REF, Pmode, MULHI3_LIBCALL); \
1307 sdiv_optab->handlers[(int) HImode].libfunc \
1308 = gen_rtx (SYMBOL_REF, Pmode, DIVHI3_LIBCALL); \
1309 udiv_optab->handlers[(int) HImode].libfunc \
1310 = gen_rtx (SYMBOL_REF, Pmode, UDIVHI3_LIBCALL); \
1311 smod_optab->handlers[(int) HImode].libfunc \
1312 = gen_rtx (SYMBOL_REF, Pmode, MODHI3_LIBCALL); \
1313 umod_optab->handlers[(int) HImode].libfunc \
1314 = gen_rtx (SYMBOL_REF, Pmode, UMODHI3_LIBCALL); \
1317 #define MOVE_RATIO 3
1319 /* Declarations for functions used in insn-output.c. */
1320 char *emit_a_shift ();