1 /* Definitions of target machine for GNU compiler.
2 Hitachi H8/300 version generating coff
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002 Free Software Foundation, Inc.
5 Contributed by Steve Chamberlain (sac@cygnus.com),
6 Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com).
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
28 /* Which CPU to compile for.
29 We use int for CPU_TYPE to avoid lots of casts. */
30 #if 0 /* defined in insn-attr.h, here for documentation */
31 enum attr_cpu { CPU_H8300, CPU_H8300H };
35 /* Various globals defined in h8300.c. */
37 extern const char *h8_push_op, *h8_pop_op, *h8_mov_op;
38 extern const char * const *h8_reg_names;
40 /* Target CPU builtins. */
41 #define TARGET_CPU_CPP_BUILTINS() \
46 builtin_define ("__H8300H__"); \
47 builtin_assert ("cpu=h8300h"); \
48 builtin_assert ("machine=h8300h"); \
50 else if (TARGET_H8300S) \
52 builtin_define ("__H8300S__"); \
53 builtin_assert ("cpu=h8300s"); \
54 builtin_assert ("machine=h8300s"); \
58 builtin_define ("__H8300__"); \
59 builtin_assert ("cpu=h8300"); \
60 builtin_assert ("machine=h8300"); \
65 #define LINK_SPEC "%{mh:-m h8300h} %{ms:-m h8300s}"
67 #define LIB_SPEC "%{mrelax:-relax} %{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
69 #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \
72 /* Basic block reordering is only beneficial on targets with cache \
73 and/or variable-cycle branches where (cycle count taken != \
74 cycle count not taken). */ \
75 flag_reorder_blocks = 0; \
79 /* Print subsidiary information on the compiler version in use. */
81 #define TARGET_VERSION fprintf (stderr, " (Hitachi H8/300)");
83 /* Run-time compilation parameters selecting different hardware subsets. */
85 extern int target_flags;
87 /* Masks for the -m switches. */
88 #define MASK_H8300S 0x00000001
89 #define MASK_MAC 0x00000002
90 #define MASK_INT32 0x00000008
91 #define MASK_ADDRESSES 0x00000040
92 #define MASK_QUICKCALL 0x00000080
93 #define MASK_SLOWBYTE 0x00000100
94 #define MASK_RELAX 0x00000400
95 #define MASK_RTL_DUMP 0x00000800
96 #define MASK_H8300H 0x00001000
97 #define MASK_ALIGN_300 0x00002000
99 /* Macros used in the machine description to test the flags. */
101 /* Make int's 32 bits. */
102 #define TARGET_INT32 (target_flags & MASK_INT32)
104 /* Dump recorded insn lengths into the output file. This helps debug the
106 #define TARGET_ADDRESSES (target_flags & MASK_ADDRESSES)
108 /* Pass the first few arguments in registers. */
109 #define TARGET_QUICKCALL (target_flags & MASK_QUICKCALL)
111 /* Pretend byte accesses are slow. */
112 #define TARGET_SLOWBYTE (target_flags & MASK_SLOWBYTE)
114 /* Dump each assembler insn's rtl into the output file.
115 This is for debugging the compiler only. */
116 #define TARGET_RTL_DUMP (target_flags & MASK_RTL_DUMP)
118 /* Select between the H8/300 and H8/300H CPUs. */
119 #define TARGET_H8300 (! TARGET_H8300H && ! TARGET_H8300S)
120 #define TARGET_H8300H (target_flags & MASK_H8300H)
121 #define TARGET_H8300S (target_flags & MASK_H8300S)
123 /* mac register and relevant instructions are available. */
124 #define TARGET_MAC (target_flags & MASK_MAC)
126 /* Align all values on the H8/300H the same way as the H8/300. Specifically,
127 32 bit and larger values are aligned on 16 bit boundaries.
128 This is all the hardware requires, but the default is 32 bits for the 300H.
129 ??? Now watch someone add hardware floating point requiring 32 bit
131 #define TARGET_ALIGN_300 (target_flags & MASK_ALIGN_300)
133 /* Macro to define tables used to set the flags.
134 This is a list in braces of pairs in braces,
135 each pair being { "NAME", VALUE }
136 where VALUE is the bits to set or minus the bits to clear.
137 An empty string NAME is used to identify the default VALUE. */
139 #define TARGET_SWITCHES \
140 { {"s", MASK_H8300S, N_("Generate H8S code")}, \
141 {"no-s", -MASK_H8300S, N_("Do not generate H8S code")}, \
142 {"s2600", MASK_MAC, N_("Generate H8S/2600 code")}, \
143 {"no-s2600", -MASK_MAC, N_("Do not generate H8S/2600 code")}, \
144 {"int32", MASK_INT32, N_("Make integers 32 bits wide")}, \
145 {"addresses", MASK_ADDRESSES, NULL}, \
146 {"quickcall", MASK_QUICKCALL, \
147 N_("Use registers for argument passing")}, \
148 {"no-quickcall", -MASK_QUICKCALL, \
149 N_("Do not use registers for argument passing")}, \
150 {"slowbyte", MASK_SLOWBYTE, \
151 N_("Consider access to byte sized memory slow")}, \
152 {"relax", MASK_RELAX, N_("Enable linker relaxing")}, \
153 {"rtl-dump", MASK_RTL_DUMP, NULL}, \
154 {"h", MASK_H8300H, N_("Generate H8/300H code")}, \
155 {"no-h", -MASK_H8300H, N_("Do not generate H8/300H code")}, \
156 {"align-300", MASK_ALIGN_300, N_("Use H8/300 alignment rules")}, \
157 { "", TARGET_DEFAULT, NULL}}
162 /* If compiling libgcc2, make these compile time constants based on what
163 flags are we actually compiling with. */
165 #define TARGET_H8300H 1
167 #define TARGET_H8300H 0
170 #define TARGET_H8300S 1
172 #define TARGET_H8300S 0
174 #endif /* !IN_LIBGCC2 */
176 /* Do things that must be done once at start up. */
178 #define OVERRIDE_OPTIONS \
181 h8300_init_once (); \
185 /* Default target_flags if no switches specified. */
187 #ifndef TARGET_DEFAULT
188 #define TARGET_DEFAULT (MASK_QUICKCALL)
191 /* Show we can debug even without a frame pointer. */
192 /* #define CAN_DEBUG_WITHOUT_FP */
194 /* Define this if addresses of constant functions
195 shouldn't be put through pseudo regs where they can be cse'd.
196 Desirable on machines where ordinary constants are expensive
197 but a CALL with constant address is cheap.
199 Calls through a register are cheaper than calls to named
200 functions; however, the register pressure this causes makes
201 CSEing of function addresses generally a lose. */
202 #define NO_FUNCTION_CSE
204 /* Target machine storage layout */
206 /* Define this if most significant bit is lowest numbered
207 in instructions that operate on numbered bit-fields.
208 This is not true on the H8/300. */
209 #define BITS_BIG_ENDIAN 0
211 /* Define this if most significant byte of a word is the lowest numbered. */
212 /* That is true on the H8/300. */
213 #define BYTES_BIG_ENDIAN 1
215 /* Define this if most significant word of a multiword number is lowest
217 This is true on an H8/300 (actually we can make it up, but we choose to
219 #define WORDS_BIG_ENDIAN 1
221 #define MAX_BITS_PER_WORD 32
223 /* Width of a word, in units (bytes). */
224 #define UNITS_PER_WORD (TARGET_H8300H || TARGET_H8300S ? 4 : 2)
225 #define MIN_UNITS_PER_WORD 2
227 #define SHORT_TYPE_SIZE 16
228 #define INT_TYPE_SIZE (TARGET_INT32 ? 32 : 16)
229 #define LONG_TYPE_SIZE 32
230 #define LONG_LONG_TYPE_SIZE 32
231 #define FLOAT_TYPE_SIZE 32
232 #define DOUBLE_TYPE_SIZE 32
233 #define LONG_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE
235 #define MAX_FIXED_MODE_SIZE 32
237 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
238 #define PARM_BOUNDARY (TARGET_H8300H || TARGET_H8300S ? 32 : 16)
240 /* Allocation boundary (in *bits*) for the code of a function. */
241 #define FUNCTION_BOUNDARY 16
243 /* Alignment of field after `int : 0' in a structure. */
244 /* One can argue this should be 32 for -mint32, but since 32 bit ints only
245 need 16 bit alignment, this is left as is so that -mint32 doesn't change
246 structure layouts. */
247 #define EMPTY_FIELD_BOUNDARY 16
249 /* A bit-field declared as `int' forces `int' alignment for the struct. */
250 #define PCC_BITFIELD_TYPE_MATTERS 0
252 /* No data type wants to be aligned rounder than this.
253 32 bit values are aligned as such on the H8/300H and H8S for speed. */
254 #define BIGGEST_ALIGNMENT \
255 (((TARGET_H8300H || TARGET_H8300S) && ! TARGET_ALIGN_300) ? 32 : 16)
257 /* The stack goes in 16/32 bit lumps. */
258 #define STACK_BOUNDARY (TARGET_H8300 ? 16 : 32)
260 /* Define this if move instructions will actually fail to work
261 when given unaligned data. */
262 /* On the H8/300, longs can be aligned on halfword boundaries, but not
264 #define STRICT_ALIGNMENT 1
266 /* Standard register usage. */
268 /* Number of actual hardware registers.
269 The hardware registers are assigned numbers for the compiler
270 from 0 to just below FIRST_PSEUDO_REGISTER.
272 All registers that the compiler knows about must be given numbers,
273 even those that are not normally considered general registers.
275 Reg 9 does not correspond to any hardware register, but instead
276 appears in the RTL as an argument pointer prior to reload, and is
277 eliminated during reloading in favor of either the stack or frame
280 #define FIRST_PSEUDO_REGISTER 11
282 /* 1 for registers that have pervasive standard uses
283 and are not available for the register allocator. */
285 #define FIXED_REGISTERS \
286 { 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1}
288 /* 1 for registers not available across function calls.
289 These must include the FIXED_REGISTERS and also any
290 registers that can be used without being saved.
291 The latter must include the registers where values are returned
292 and the register where structure-value addresses are passed.
293 Aside from that, you can include as many other registers as you
296 H8 destroys r0,r1,r2,r3. */
298 #define CALL_USED_REGISTERS \
299 { 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1 }
301 #define REG_ALLOC_ORDER \
302 { 2, 3, 0, 1, 4, 5, 6, 8, 7, 9, 10}
304 #define CONDITIONAL_REGISTER_USAGE \
307 fixed_regs[MAC_REG] = call_used_regs[MAC_REG] = 1; \
310 /* Return number of consecutive hard regs needed starting at reg REGNO
311 to hold something of mode MODE.
313 This is ordinarily the length in words of a value of mode MODE
314 but can be less for certain modes in special long registers.
316 We pretend the MAC register is 32bits -- we don't have any data
317 types on the H8 series to handle more than 32bits. */
319 #define HARD_REGNO_NREGS(REGNO, MODE) \
320 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
322 /* Value is 1 if hard register REGNO can hold a value of machine-mode
325 H8/300: If an even reg, then anything goes. Otherwise the mode must be QI
327 H8/300H: Anything goes. */
329 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
331 ? ((((REGNO) & 1) == 0) || ((MODE) == HImode) || ((MODE) == QImode)) \
332 : (REGNO) == MAC_REG ? (MODE) == SImode : 1)
334 /* Value is 1 if it is a good idea to tie two pseudo registers
335 when one has mode MODE1 and one has mode MODE2.
336 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
337 for any hard reg, then this must be 0 for correct output. */
338 #define MODES_TIEABLE_P(MODE1, MODE2) \
339 ((MODE1) == (MODE2) \
340 || (((MODE1) == QImode || (MODE1) == HImode \
341 || ((TARGET_H8300H || TARGET_H8300S) && (MODE1) == SImode)) \
342 && ((MODE2) == QImode || (MODE2) == HImode \
343 || ((TARGET_H8300H || TARGET_H8300S) && (MODE2) == SImode))))
345 /* Specify the registers used for certain standard purposes.
346 The values of these macros are register numbers. */
348 /* H8/300 pc is not overloaded on a register. */
350 /*#define PC_REGNUM 15*/
352 /* Register to use for pushing function arguments. */
353 #define STACK_POINTER_REGNUM SP_REG
355 /* Base register for access to local variables of the function. */
356 #define FRAME_POINTER_REGNUM FP_REG
358 /* Value should be nonzero if functions must have frame pointers.
359 Zero means the frame pointer need not be set up (and parms
360 may be accessed via the stack pointer) in functions that seem suitable.
361 This is computed in `reload', in reload1.c. */
362 #define FRAME_POINTER_REQUIRED 0
364 /* Base register for access to arguments of the function. */
365 #define ARG_POINTER_REGNUM AP_REG
367 /* Register in which static-chain is passed to a function. */
368 #define STATIC_CHAIN_REGNUM SC_REG
370 /* Fake register that holds the address on the stack of the
371 current function's return address. */
372 #define RETURN_ADDRESS_POINTER_REGNUM RAP_REG
374 /* A C expression whose value is RTL representing the value of the return
375 address for the frame COUNT steps up from the current frame.
376 FRAMEADDR is already the frame pointer of the COUNT frame, assuming
377 a stack layout with the frame pointer as the first saved register. */
378 #define RETURN_ADDR_RTX(COUNT, FRAME) h8300_return_addr_rtx ((COUNT), (FRAME))
380 /* Define the classes of registers for register constraints in the
381 machine description. Also define ranges of constants.
383 One of the classes must always be named ALL_REGS and include all hard regs.
384 If there is more than one class, another class must be named NO_REGS
385 and contain no registers.
387 The name GENERAL_REGS must be the name of a class (or an alias for
388 another name such as ALL_REGS). This is the class of registers
389 that is allowed by "g" or "r" in a register constraint.
390 Also, registers outside this class are allocated only when
391 instructions express preferences for them.
393 The classes must be numbered in nondecreasing order; that is,
394 a larger-numbered class must never be contained completely
395 in a smaller-numbered class.
397 For any two classes, it is very desirable that there be another
398 class that represents their union. */
401 NO_REGS, GENERAL_REGS, MAC_REGS, ALL_REGS, LIM_REG_CLASSES
404 #define N_REG_CLASSES ((int) LIM_REG_CLASSES)
406 /* Give names of register classes as strings for dump file. */
408 #define REG_CLASS_NAMES \
409 { "NO_REGS", "GENERAL_REGS", "MAC_REGS", "ALL_REGS", "LIM_REGS" }
411 /* Define which registers fit in which classes.
412 This is an initializer for a vector of HARD_REG_SET
413 of length N_REG_CLASSES. */
415 #define REG_CLASS_CONTENTS \
416 { {0}, /* No regs */ \
417 {0x6ff}, /* GENERAL_REGS */ \
418 {0x100}, /* MAC_REGS */ \
419 {0x7ff}, /* ALL_REGS */ \
422 /* The same information, inverted:
423 Return the class number of the smallest class containing
424 reg number REGNO. This could be a conditional expression
425 or could index an array. */
427 #define REGNO_REG_CLASS(REGNO) (REGNO != MAC_REG ? GENERAL_REGS : MAC_REGS)
429 /* The class value for index registers, and the one for base regs. */
431 #define INDEX_REG_CLASS NO_REGS
432 #define BASE_REG_CLASS GENERAL_REGS
434 /* Get reg_class from a letter such as appears in the machine description.
436 'a' is the MAC register. */
438 #define REG_CLASS_FROM_LETTER(C) ((C) == 'a' ? MAC_REGS : NO_REGS)
440 /* The letters I, J, K, L, M, N, O, P in a register constraint string
441 can be used to stand for particular ranges of immediate operands.
442 This macro defines what the ranges are.
443 C is the letter, and VALUE is a constant value.
444 Return 1 if VALUE is in the range specified by C. */
446 #define CONST_OK_FOR_I(VALUE) ((VALUE) == 0)
447 #define CONST_OK_FOR_J(VALUE) ((unsigned HOST_WIDE_INT) (VALUE) < 256)
448 #define CONST_OK_FOR_K(VALUE) ((VALUE) == 1 || (VALUE) == 2)
449 #define CONST_OK_FOR_L(VALUE) \
450 (TARGET_H8300H || TARGET_H8300S \
451 ? (VALUE) == 1 || (VALUE) == 2 || (VALUE) == 4 \
452 : (VALUE) == 1 || (VALUE) == 2)
453 #define CONST_OK_FOR_M(VALUE) ((VALUE) == 3 || (VALUE) == 4)
454 #define CONST_OK_FOR_N(VALUE) \
455 (TARGET_H8300H || TARGET_H8300S \
456 ? (VALUE) == -1 || (VALUE) == -2 || (VALUE) == -4 \
457 : (VALUE) == -1 || (VALUE) == -2)
459 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
460 ((C) == 'I' ? CONST_OK_FOR_I (VALUE) : \
461 (C) == 'J' ? CONST_OK_FOR_J (VALUE) : \
462 (C) == 'K' ? CONST_OK_FOR_K (VALUE) : \
463 (C) == 'L' ? CONST_OK_FOR_L (VALUE) : \
464 (C) == 'M' ? CONST_OK_FOR_M (VALUE) : \
465 (C) == 'N' ? CONST_OK_FOR_N (VALUE) : \
468 /* Similar, but for floating constants, and defining letters G and H.
469 Here VALUE is the CONST_DOUBLE rtx itself.
471 `G' is a floating-point zero. */
473 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
474 ((C) == 'G' ? (VALUE) == CONST0_RTX (DFmode) \
477 /* Given an rtx X being reloaded into a reg required to be
478 in class CLASS, return the class of reg to actually use.
479 In general this is just CLASS; but on some machines
480 in some cases it is preferable to use a more restrictive class. */
482 #define PREFERRED_RELOAD_CLASS(X, CLASS) (CLASS)
484 /* Return the maximum number of consecutive registers
485 needed to represent mode MODE in a register of class CLASS. */
487 /* On the H8, this is the size of MODE in words. */
489 #define CLASS_MAX_NREGS(CLASS, MODE) \
490 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
492 /* Any SI register-to-register move may need to be reloaded,
493 so define REGISTER_MOVE_COST to be > 2 so that reload never
496 #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \
497 (CLASS1 == MAC_REGS || CLASS2 == MAC_REGS ? 6 : 3)
499 /* Stack layout; function entry, exit and calling. */
501 /* Define this if pushing a word on the stack
502 makes the stack pointer a smaller address. */
504 #define STACK_GROWS_DOWNWARD
506 /* Define this if the nominal address of the stack frame
507 is at the high-address end of the local variables;
508 that is, each additional local variable allocated
509 goes at a more negative offset in the frame. */
511 #define FRAME_GROWS_DOWNWARD
513 /* Offset within stack frame to start allocating local variables at.
514 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
515 first local allocated. Otherwise, it is the offset to the BEGINNING
516 of the first local allocated. */
518 #define STARTING_FRAME_OFFSET 0
520 /* If we generate an insn to push BYTES bytes,
521 this says how many the stack pointer really advances by.
523 On the H8/300, @-sp really pushes a byte if you ask it to - but that's
524 dangerous, so we claim that it always pushes a word, then we catch
525 the mov.b rx,@-sp and turn it into a mov.w rx,@-sp on output.
527 On the H8/300H, we simplify TARGET_QUICKCALL by setting this to 4
528 and doing a similar thing. */
530 #define PUSH_ROUNDING(BYTES) \
531 (((BYTES) + PARM_BOUNDARY / 8 - 1) & -PARM_BOUNDARY / 8)
533 /* Offset of first parameter from the argument pointer register value. */
534 /* Is equal to the size of the saved fp + pc, even if an fp isn't
535 saved since the value is used before we know. */
537 #define FIRST_PARM_OFFSET(FNDECL) 0
539 /* Value is the number of bytes of arguments automatically
540 popped when returning from a subroutine call.
541 FUNDECL is the declaration node of the function (as a tree),
542 FUNTYPE is the data type of the function (as a tree),
543 or for a library call it is an identifier node for the subroutine name.
544 SIZE is the number of bytes of arguments passed on the stack.
546 On the H8 the return does not pop anything. */
548 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, SIZE) 0
550 /* Definitions for register eliminations.
552 This is an array of structures. Each structure initializes one pair
553 of eliminable registers. The "from" register number is given first,
554 followed by "to". Eliminations of the same "from" register are listed
555 in order of preference.
557 We have two registers that can be eliminated on the h8300. First, the
558 frame pointer register can often be eliminated in favor of the stack
559 pointer register. Secondly, the argument pointer register can always be
560 eliminated; it is replaced with either the stack or frame pointer. */
562 #define ELIMINABLE_REGS \
563 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
564 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
565 { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM},\
566 { RETURN_ADDRESS_POINTER_REGNUM, FRAME_POINTER_REGNUM},\
567 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
569 /* Given FROM and TO register numbers, say whether this elimination is allowed.
570 Frame pointer elimination is automatically handled.
572 For the h8300, if frame pointer elimination is being done, we would like to
573 convert ap and rp into sp, not fp.
575 All other eliminations are valid. */
577 #define CAN_ELIMINATE(FROM, TO) \
578 ((((FROM) == ARG_POINTER_REGNUM || (FROM) == RETURN_ADDRESS_POINTER_REGNUM) \
579 && (TO) == STACK_POINTER_REGNUM) \
580 ? ! frame_pointer_needed \
583 /* Define the offset between two registers, one to be eliminated, and the other
584 its replacement, at the start of a routine. */
586 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
587 ((OFFSET) = h8300_initial_elimination_offset ((FROM), (TO)))
589 /* Define how to find the value returned by a function.
590 VALTYPE is the data type of the value (as a tree).
591 If the precise function being called is known, FUNC is its FUNCTION_DECL;
592 otherwise, FUNC is 0.
594 On the H8 the return value is in R0/R1. */
596 #define FUNCTION_VALUE(VALTYPE, FUNC) \
597 gen_rtx_REG (TYPE_MODE (VALTYPE), 0)
599 /* Define how to find the value returned by a library function
600 assuming the value has mode MODE. */
602 /* On the H8 the return value is in R0/R1. */
604 #define LIBCALL_VALUE(MODE) \
605 gen_rtx_REG (MODE, 0)
607 /* 1 if N is a possible register number for a function value.
608 On the H8, R0 is the only register thus used. */
610 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
612 /* Define this if PCC uses the nonreentrant convention for returning
613 structure and union values. */
615 /*#define PCC_STATIC_STRUCT_RETURN*/
617 /* 1 if N is a possible register number for function argument passing.
618 On the H8, no registers are used in this way. */
620 #define FUNCTION_ARG_REGNO_P(N) (TARGET_QUICKCALL ? N < 3 : 0)
622 /* Register in which address to store a structure value
623 is passed to a function. */
625 #define STRUCT_VALUE 0
627 /* Return true if X should be returned in memory. */
628 #define RETURN_IN_MEMORY(X) \
629 (TYPE_MODE (X) == BLKmode || GET_MODE_SIZE (TYPE_MODE (X)) > 4)
631 /* When defined, the compiler allows registers explicitly used in the
632 rtl to be used as spill registers but prevents the compiler from
633 extending the lifetime of these registers. */
635 #define SMALL_REGISTER_CLASSES 1
637 /* Define a data type for recording info about an argument list
638 during the scan of that argument list. This data type should
639 hold all necessary information about the function itself
640 and about the args processed so far, enough to enable macros
641 such as FUNCTION_ARG to determine where the next arg should go.
643 On the H8/300, this is a two item struct, the first is the number
644 of bytes scanned so far and the second is the rtx of the called
645 library function if any. */
647 #define CUMULATIVE_ARGS struct cum_arg
651 struct rtx_def *libcall;
654 /* Initialize a variable CUM of type CUMULATIVE_ARGS
655 for a call to a function whose data type is FNTYPE.
656 For a library call, FNTYPE is 0.
658 On the H8/300, the offset starts at 0. */
660 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
661 ((CUM).nbytes = 0, (CUM).libcall = LIBNAME)
663 /* Update the data in CUM to advance over an argument
664 of mode MODE and data type TYPE.
665 (TYPE is null for libcalls where that information may not be available.) */
667 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
668 ((CUM).nbytes += ((MODE) != BLKmode \
669 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD \
670 : (int_size_in_bytes (TYPE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD))
672 /* Define where to put the arguments to a function.
673 Value is zero to push the argument on the stack,
674 or a hard register in which to store the argument.
676 MODE is the argument's machine mode.
677 TYPE is the data type of the argument (as a tree).
678 This is null for libcalls where that information may
680 CUM is a variable of type CUMULATIVE_ARGS which gives info about
681 the preceding args and about the function being called.
682 NAMED is nonzero if this argument is a named parameter
683 (otherwise it is an extra parameter matching an ellipsis). */
685 /* On the H8/300 all normal args are pushed, unless -mquickcall in which
686 case the first 3 arguments are passed in registers.
687 See function `function_arg'. */
689 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
690 function_arg (&CUM, MODE, TYPE, NAMED)
692 /* Output assembler code to FILE to increment profiler label # LABELNO
693 for profiling a function entry. */
695 #define FUNCTION_PROFILER(FILE, LABELNO) \
696 fprintf (FILE, "\t%s\t#LP%d,%s\n\tjsr @mcount\n", \
697 h8_mov_op, (LABELNO), h8_reg_names[0]);
699 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
700 the stack pointer does not matter. The value is tested only in
701 functions that have frame pointers.
702 No definition is equivalent to always zero. */
704 #define EXIT_IGNORE_STACK 0
706 /* Output assembler code for a block containing the constant parts
707 of a trampoline, leaving space for the variable parts.
711 1 0000 7900xxxx mov.w #0x1234,r3
712 2 0004 5A00xxxx jmp @0x1234
717 2 0000 7A00xxxxxxxx mov.l #0x12345678,er3
718 3 0006 5Axxxxxx jmp @0x123456
722 #define TRAMPOLINE_TEMPLATE(FILE) \
727 fprintf (FILE, "\tmov.w #0x1234,r3\n"); \
728 fprintf (FILE, "\tjmp @0x1234\n"); \
732 fprintf (FILE, "\tmov.l #0x12345678,er3\n"); \
733 fprintf (FILE, "\tjmp @0x123456\n"); \
738 /* Length in units of the trampoline for entering a nested function. */
740 #define TRAMPOLINE_SIZE (TARGET_H8300 ? 8 : 12)
742 /* Emit RTL insns to initialize the variable parts of a trampoline.
743 FNADDR is an RTX for the address of the function's pure code.
744 CXT is an RTX for the static chain value for the function. */
746 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
748 emit_move_insn (gen_rtx_MEM (Pmode, plus_constant ((TRAMP), 2)), CXT); \
749 emit_move_insn (gen_rtx_MEM (Pmode, plus_constant ((TRAMP), 6)), FNADDR); \
750 if (TARGET_H8300H || TARGET_H8300S) \
751 emit_move_insn (gen_rtx_MEM (QImode, plus_constant ((TRAMP), 6)), \
755 /* Addressing modes, and classification of registers for them. */
757 #define HAVE_POST_INCREMENT 1
758 #define HAVE_PRE_DECREMENT 1
760 /* Macros to check register numbers against specific register classes. */
762 /* These assume that REGNO is a hard or pseudo reg number.
763 They give nonzero only if REGNO is a hard reg of the suitable class
764 or a pseudo reg currently allocated to a suitable hard reg.
765 Since they use reg_renumber, they are safe only once reg_renumber
766 has been allocated, which happens in local-alloc.c. */
768 #define REGNO_OK_FOR_INDEX_P(regno) 0
770 #define REGNO_OK_FOR_BASE_P(regno) \
771 (((regno) < FIRST_PSEUDO_REGISTER && regno != 8) || reg_renumber[regno] >= 0)
773 /* Maximum number of registers that can appear in a valid memory address. */
775 #define MAX_REGS_PER_ADDRESS 1
777 /* 1 if X is an rtx for a constant that is a valid address. */
779 #define CONSTANT_ADDRESS_P(X) \
780 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
781 || (GET_CODE (X) == CONST_INT \
782 /* We handle signed and unsigned offsets here. */ \
783 && INTVAL (X) > (TARGET_H8300 ? -0x10000 : -0x1000000) \
784 && INTVAL (X) < (TARGET_H8300 ? 0x10000 : 0x1000000)) \
785 || ((GET_CODE (X) == HIGH || GET_CODE (X) == CONST) \
788 /* Nonzero if the constant value X is a legitimate general operand.
789 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
791 #define LEGITIMATE_CONSTANT_P(X) (GET_CODE (X) != CONST_DOUBLE)
793 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
794 and check its validity for a certain class.
795 We have two alternate definitions for each of them.
796 The usual definition accepts all pseudo regs; the other rejects
797 them unless they have been allocated suitable hard regs.
798 The symbol REG_OK_STRICT causes the latter definition to be used.
800 Most source files want to accept pseudo regs in the hope that
801 they will get allocated to the class that the insn wants them to be in.
802 Source files for reload pass need to be strict.
803 After reload, it makes no difference, since pseudo regs have
804 been eliminated by then. */
806 #ifndef REG_OK_STRICT
808 /* Nonzero if X is a hard reg that can be used as an index
809 or if it is a pseudo reg. */
810 #define REG_OK_FOR_INDEX_P(X) 0
811 /* Nonzero if X is a hard reg that can be used as a base reg
812 or if it is a pseudo reg. */
813 /* Don't use REGNO_OK_FOR_BASE_P here because it uses reg_renumber. */
814 #define REG_OK_FOR_BASE_P(X) \
815 (REGNO (X) >= FIRST_PSEUDO_REGISTER || REGNO (X) != 8)
816 #define REG_OK_FOR_INDEX_P_STRICT(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
817 #define REG_OK_FOR_BASE_P_STRICT(X) REGNO_OK_FOR_BASE_P (REGNO (X))
822 /* Nonzero if X is a hard reg that can be used as an index. */
823 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
824 /* Nonzero if X is a hard reg that can be used as a base reg. */
825 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
830 /* Extra constraints. */
832 #define OK_FOR_R(OP) \
833 (GET_CODE (OP) == CONST_INT \
834 ? !h8300_shift_needs_scratch_p (INTVAL (OP), QImode) \
837 #define OK_FOR_S(OP) \
838 (GET_CODE (OP) == CONST_INT \
839 ? !h8300_shift_needs_scratch_p (INTVAL (OP), HImode) \
842 #define OK_FOR_T(OP) \
843 (GET_CODE (OP) == CONST_INT \
844 ? !h8300_shift_needs_scratch_p (INTVAL (OP), SImode) \
847 /* Nonzero if X is a constant address suitable as an 8-bit absolute,
848 which is a special case of the 'R' operand. */
850 #define EIGHTBIT_CONSTANT_ADDRESS_P(X) \
851 h8300_eightbit_constant_address_p (X)
853 /* Nonzero if X is a constant address suitable as an 16-bit absolute
854 on H8/300H and H8S. */
856 #define TINY_CONSTANT_ADDRESS_P(X) \
857 h8300_tiny_constant_address_p (X)
859 /* 'U' if valid for a bset destination;
860 i.e. a register, register indirect, or the eightbit memory region
861 (a SYMBOL_REF with an SYMBOL_REF_FLAG set).
863 On the H8S 'U' can also be a 16bit or 32bit absolute. */
864 #define OK_FOR_U(OP) \
865 ((GET_CODE (OP) == REG && REG_OK_FOR_BASE_P (OP)) \
866 || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == REG \
867 && REG_OK_FOR_BASE_P (XEXP (OP, 0))) \
868 || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == SYMBOL_REF \
869 && (TARGET_H8300S || SYMBOL_REF_FLAG (XEXP (OP, 0)))) \
870 || ((GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == CONST \
871 && GET_CODE (XEXP (XEXP (OP, 0), 0)) == PLUS \
872 && GET_CODE (XEXP (XEXP (XEXP (OP, 0), 0), 0)) == SYMBOL_REF \
873 && GET_CODE (XEXP (XEXP (XEXP (OP, 0), 0), 1)) == CONST_INT) \
875 || SYMBOL_REF_FLAG (XEXP (XEXP (XEXP (OP, 0), 0), 0)))) \
876 || (GET_CODE (OP) == MEM \
877 && EIGHTBIT_CONSTANT_ADDRESS_P (XEXP (OP, 0))) \
878 || (GET_CODE (OP) == MEM && TARGET_H8300S \
879 && GET_CODE (XEXP (OP, 0)) == CONST_INT))
881 #define EXTRA_CONSTRAINT(OP, C) \
882 ((C) == 'R' ? OK_FOR_R (OP) : \
883 (C) == 'S' ? OK_FOR_S (OP) : \
884 (C) == 'T' ? OK_FOR_T (OP) : \
885 (C) == 'U' ? OK_FOR_U (OP) : \
888 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
889 that is a valid memory address for an instruction.
890 The MODE argument is the machine mode for the MEM expression
891 that wants to use this address.
893 The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
894 except for CONSTANT_ADDRESS_P which is actually
897 On the H8/300, a legitimate address has the form
898 REG, REG+CONSTANT_ADDRESS or CONSTANT_ADDRESS. */
900 /* Accept either REG or SUBREG where a register is valid. */
902 #define RTX_OK_FOR_BASE_P(X) \
903 ((REG_P (X) && REG_OK_FOR_BASE_P (X)) \
904 || (GET_CODE (X) == SUBREG && REG_P (SUBREG_REG (X)) \
905 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
907 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
908 if (RTX_OK_FOR_BASE_P (X)) goto ADDR; \
909 if (CONSTANT_ADDRESS_P (X)) goto ADDR; \
910 if (GET_CODE (X) == PLUS \
911 && CONSTANT_ADDRESS_P (XEXP (X, 1)) \
912 && RTX_OK_FOR_BASE_P (XEXP (X, 0))) goto ADDR;
914 /* Try machine-dependent ways of modifying an illegitimate address
915 to be legitimate. If we find one, return the new, valid address.
916 This macro is used in only one place: `memory_address' in explow.c.
918 OLDX is the address as it was before break_out_memory_refs was called.
919 In some cases it is useful to look at this to decide what needs to be done.
921 MODE and WIN are passed so that this macro can use
922 GO_IF_LEGITIMATE_ADDRESS.
924 It is always safe for this macro to do nothing. It exists to recognize
925 opportunities to optimize the output.
927 For the H8/300, don't do anything. */
929 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) {}
931 /* Go to LABEL if ADDR (a legitimate address expression)
932 has an effect that depends on the machine mode it is used for.
934 On the H8/300, the predecrement and postincrement address depend thus
935 (the amount of decrement or increment being the length of the operand). */
937 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
938 if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL;
940 /* Specify the machine mode that this machine uses
941 for the index in the tablejump instruction. */
942 #define CASE_VECTOR_MODE Pmode
944 /* Define as C expression which evaluates to nonzero if the tablejump
945 instruction expects the table to contain offsets from the address of the
947 Do not define this if the table should contain absolute addresses. */
948 /*#define CASE_VECTOR_PC_RELATIVE 1 */
950 /* Define this as 1 if `char' should by default be signed; else as 0.
952 On the H8/300, sign extension is expensive, so we'll say that chars
954 #define DEFAULT_SIGNED_CHAR 0
956 /* This flag, if defined, says the same insns that convert to a signed fixnum
957 also convert validly to an unsigned one. */
958 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC
960 /* Max number of bytes we can move from memory to memory
961 in one reasonably fast instruction. */
962 #define MOVE_MAX (TARGET_H8300H || TARGET_H8300S ? 4 : 2)
963 #define MAX_MOVE_MAX 4
965 /* Nonzero if access to memory by bytes is slow and undesirable. */
966 #define SLOW_BYTE_ACCESS TARGET_SLOWBYTE
968 /* Define if shifts truncate the shift count
969 which implies one can omit a sign-extension or zero-extension
971 /* #define SHIFT_COUNT_TRUNCATED */
973 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
974 is done just by pretending it is already truncated. */
975 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
977 /* Specify the machine mode that pointers have.
978 After generation of rtl, the compiler makes no further distinction
979 between pointers and any other objects of this machine mode. */
980 #define Pmode (TARGET_H8300H || TARGET_H8300S ? SImode : HImode)
983 We use longs for the 300H because ints can be 16 or 32.
984 GCC requires SIZE_TYPE to be the same size as pointers. */
985 #define SIZE_TYPE (TARGET_H8300 ? "unsigned int" : "long unsigned int")
986 #define PTRDIFF_TYPE (TARGET_H8300 ? "int" : "long int")
988 #define WCHAR_TYPE "short unsigned int"
989 #define WCHAR_TYPE_SIZE 16
990 #define MAX_WCHAR_TYPE_SIZE 16
992 /* A function address in a call instruction
993 is a byte address (for indexing purposes)
994 so give the MEM rtx a byte's mode. */
995 #define FUNCTION_MODE QImode
997 #define ADJUST_INSN_LENGTH(INSN, LENGTH) \
998 LENGTH += h8300_adjust_insn_length (INSN, LENGTH);
1000 /* Compute the cost of computing a constant rtl expression RTX
1001 whose rtx-code is CODE. The body of this macro is a portion
1002 of a switch statement. If the code is computed here,
1003 return it with a return statement. Otherwise, break from the switch. */
1005 #define DEFAULT_RTX_COSTS(RTX, CODE, OUTER_CODE) \
1006 return (const_costs (RTX, CODE, OUTER_CODE));
1008 #define BRANCH_COST 0
1010 /* We say that MOD and DIV are so cheap because otherwise we'll
1011 generate some really horrible code for division of a power of two. */
1013 /* Provide the costs of a rtl expression. This is in the body of a
1015 /* ??? Shifts need to have a *much* higher cost than this. */
1017 #define RTX_COSTS(RTX, CODE, OUTER_CODE) \
1028 if (GET_MODE (RTX) == HImode) return 2; \
1031 /* Tell final.c how to eliminate redundant test instructions. */
1033 /* Here we define machine-dependent flags and fields in cc_status
1034 (see `conditions.h'). No extra ones are needed for the h8300. */
1036 /* Store in cc_status the expressions
1037 that the condition codes will describe
1038 after execution of an instruction whose pattern is EXP.
1039 Do not alter them if the instruction would not alter the cc's. */
1041 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc (EXP, INSN)
1043 /* The add insns don't set overflow in a usable way. */
1044 #define CC_OVERFLOW_UNUSABLE 01000
1045 /* The mov,and,or,xor insns don't set carry. That's OK though as the
1046 Z bit is all we need when doing unsigned comparisons on the result of
1047 these insns (since they're always with 0). However, conditions.h has
1048 CC_NO_OVERFLOW defined for this purpose. Rename it to something more
1050 #define CC_NO_CARRY CC_NO_OVERFLOW
1052 /* Control the assembler format that we output. */
1054 /* Output at beginning/end of assembler file. */
1056 #define ASM_FILE_START(FILE) asm_file_start (FILE)
1058 #define ASM_FILE_END(FILE) asm_file_end (FILE)
1060 /* Output to assembler file text saying following lines
1061 may contain character constants, extra white space, comments, etc. */
1063 #define ASM_APP_ON "; #APP\n"
1065 /* Output to assembler file text saying following lines
1066 no longer contain unusual constructs. */
1068 #define ASM_APP_OFF "; #NO_APP\n"
1070 #define FILE_ASM_OP "\t.file\n"
1071 #define IDENT_ASM_OP "\t.ident\n"
1073 /* The assembler op to get a word, 2 bytes for the H8/300, 4 for H8/300H. */
1074 #define ASM_WORD_OP (TARGET_H8300 ? "\t.word\t" : "\t.long\t")
1076 #define TEXT_SECTION_ASM_OP "\t.section .text"
1077 #define DATA_SECTION_ASM_OP "\t.section .data"
1078 #define BSS_SECTION_ASM_OP "\t.section .bss"
1079 #define INIT_SECTION_ASM_OP "\t.section .init"
1080 #define READONLY_DATA_SECTION_ASM_OP "\t.section .rodata"
1082 #undef DO_GLOBAL_CTORS_BODY
1083 #define DO_GLOBAL_CTORS_BODY \
1085 typedef (*pfunc)(); \
1086 extern pfunc __ctors[]; \
1087 extern pfunc __ctors_end[]; \
1089 for (p = __ctors_end; p > __ctors; ) \
1095 #undef DO_GLOBAL_DTORS_BODY
1096 #define DO_GLOBAL_DTORS_BODY \
1098 typedef (*pfunc)(); \
1099 extern pfunc __dtors[]; \
1100 extern pfunc __dtors_end[]; \
1102 for (p = __dtors; p < __dtors_end; p++) \
1108 #define TINY_DATA_NAME_P(NAME) (*(NAME) == '&')
1110 /* How to refer to registers in assembler output.
1111 This sequence is indexed by compiler's hard-register-number (see above). */
1113 #define REGISTER_NAMES \
1114 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "sp", "mac", "ap", "rap" }
1116 #define ADDITIONAL_REGISTER_NAMES \
1117 { {"er0", 0}, {"er1", 1}, {"er2", 2}, {"er3", 3}, {"er4", 4}, \
1118 {"er5", 5}, {"er6", 6}, {"er7", 7}, {"r7", 7} }
1120 #define SDB_DEBUGGING_INFO 1
1121 #define SDB_DELIM "\n"
1123 /* Support -gstabs. */
1125 #include "dbxcoff.h"
1127 /* Override definition in dbxcoff.h. */
1128 /* Generate a blank trailing N_SO to mark the end of the .o file, since
1129 we can't depend upon the linker to mark .o file boundaries with
1132 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
1133 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
1135 "\t.text\n.stabs \"\",%d,0,0,.Letext\n.Letext:\n", N_SO)
1137 /* Switch into a generic section. */
1138 #define TARGET_ASM_NAMED_SECTION h8300_asm_named_section
1140 #define ASM_OUTPUT_LABELREF(FILE, NAME) \
1141 asm_fprintf ((FILE), "%U%s", (NAME) + (TINY_DATA_NAME_P (NAME) ? 1 : 0))
1143 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)
1145 /* Globalizing directive for a label. */
1146 #define GLOBAL_ASM_OP "\t.global "
1148 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1149 ASM_OUTPUT_LABEL (FILE, NAME)
1151 /* The prefix to add to user-visible assembler symbols. */
1153 #define USER_LABEL_PREFIX "_"
1155 /* This is how to output an internal numbered label where
1156 PREFIX is the class of label and NUM is the number within the class.
1158 N.B.: The h8300.md branch_true and branch_false patterns also know
1159 how to generate internal labels. */
1161 #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
1162 fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
1164 /* This is how to store into the string LABEL
1165 the symbol_ref name of an internal numbered label where
1166 PREFIX is the class of label and NUM is the number within the class.
1167 This is suitable for output with `assemble_name'. */
1169 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
1170 sprintf (LABEL, "*.%s%d", PREFIX, NUM)
1172 /* This is how to output an insn to push a register on the stack.
1173 It need not be very fast code. */
1175 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
1176 fprintf (FILE, "\t%s\t%s\n", h8_push_op, h8_reg_names[REGNO])
1178 /* This is how to output an insn to pop a register from the stack.
1179 It need not be very fast code. */
1181 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
1182 fprintf (FILE, "\t%s\t%s\n", h8_pop_op, h8_reg_names[REGNO])
1184 /* This is how to output an element of a case-vector that is absolute. */
1186 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1187 fprintf (FILE, "%s.L%d\n", ASM_WORD_OP, VALUE)
1189 /* This is how to output an element of a case-vector that is relative. */
1191 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1192 fprintf (FILE, "%s.L%d-.L%d\n", ASM_WORD_OP, VALUE, REL)
1194 /* This is how to output an assembler line
1195 that says to advance the location counter
1196 to a multiple of 2**LOG bytes. */
1198 #define ASM_OUTPUT_ALIGN(FILE, LOG) \
1200 fprintf (FILE, "\t.align %d\n", (LOG))
1202 /* This is how to output an assembler line
1203 that says to advance the location counter by SIZE bytes. */
1205 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1206 fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME)
1208 #define ASM_OUTPUT_SKIP(FILE, SIZE) \
1209 fprintf (FILE, "\t.space %d\n", (SIZE))
1211 /* This says how to output an assembler line
1212 to define a global common symbol. */
1214 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1215 ( fputs ("\t.comm ", (FILE)), \
1216 assemble_name ((FILE), (NAME)), \
1217 fprintf ((FILE), ",%d\n", (SIZE)))
1219 /* This says how to output the assembler to define a global
1220 uninitialized but not common symbol.
1221 Try to use asm_output_bss to implement this macro. */
1223 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \
1224 asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
1226 /* This says how to output an assembler line
1227 to define a local common symbol. */
1229 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1230 ( fputs ("\t.lcomm ", (FILE)), \
1231 assemble_name ((FILE), (NAME)), \
1232 fprintf ((FILE), ",%d\n", (SIZE)))
1234 /* Store in OUTPUT a string (made with alloca) containing
1235 an assembler-name for a local static variable named NAME.
1236 LABELNO is an integer which is different for each call. */
1238 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
1239 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
1240 sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))
1242 /* Print an instruction operand X on file FILE.
1243 Look in h8300.c for details. */
1245 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
1248 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
1250 /* Print a memory operand whose address is X, on file FILE.
1251 This uses a function in h8300.c. */
1253 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
1255 /* H8300 specific pragmas. */
1256 #define REGISTER_TARGET_PRAGMAS(PFILE) \
1259 cpp_register_pragma (PFILE, 0, "saveall", h8300_pr_saveall); \
1260 cpp_register_pragma (PFILE, 0, "interrupt", h8300_pr_interrupt); \
1264 #define FINAL_PRESCAN_INSN(insn, operand, nop) \
1265 final_prescan_insn (insn, operand, nop)
1267 /* Define this macro if GNU CC should generate calls to the System V
1268 (and ANSI C) library functions `memcpy' and `memset' rather than
1269 the BSD functions `bcopy' and `bzero'. */
1271 #define TARGET_MEM_FUNCTIONS 1
1273 #define MULHI3_LIBCALL "__mulhi3"
1274 #define DIVHI3_LIBCALL "__divhi3"
1275 #define UDIVHI3_LIBCALL "__udivhi3"
1276 #define MODHI3_LIBCALL "__modhi3"
1277 #define UMODHI3_LIBCALL "__umodhi3"
1279 /* Perform target dependent optabs initialization. */
1281 #define INIT_TARGET_OPTABS \
1284 smul_optab->handlers[(int) HImode].libfunc \
1285 = init_one_libfunc (MULHI3_LIBCALL); \
1286 sdiv_optab->handlers[(int) HImode].libfunc \
1287 = init_one_libfunc (DIVHI3_LIBCALL); \
1288 udiv_optab->handlers[(int) HImode].libfunc \
1289 = init_one_libfunc (UDIVHI3_LIBCALL); \
1290 smod_optab->handlers[(int) HImode].libfunc \
1291 = init_one_libfunc (MODHI3_LIBCALL); \
1292 umod_optab->handlers[(int) HImode].libfunc \
1293 = init_one_libfunc (UMODHI3_LIBCALL); \
1297 #define MOVE_RATIO 3
1299 #endif /* ! GCC_H8300_H */