3 /* Definitions of FR30 target.
4 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2007, 2008, 2009, 2010,
5 2011 Free Software Foundation, Inc.
6 Contributed by Cygnus Solutions.
8 This file is part of GCC.
10 GCC 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 3, or (at your option)
15 GCC 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 GCC; see the file COPYING3. If not see
22 <http://www.gnu.org/licenses/>. */
25 /*{{{ Run-time target specifications. */
30 /* Define this to be a string constant containing `-D' options to define the
31 predefined macros that identify this machine and system. These macros will
32 be predefined unless the `-ansi' option is specified. */
34 #define TARGET_CPU_CPP_BUILTINS() \
37 builtin_define_std ("fr30"); \
38 builtin_assert ("machine=fr30"); \
43 #define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
45 /* Include the OS stub library, so that the code can be simulated.
46 This is not the right way to do this. Ideally this kind of thing
47 should be done in the linker script - but I have not worked out how
48 to specify the location of a linker script in a gcc command line yet... */
50 #define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s"
53 #define LIB_SPEC "-lc"
56 #define LINK_SPEC "%{h*} %{v:-V} \
57 %{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic}"
60 /*{{{ Storage Layout. */
62 #define BITS_BIG_ENDIAN 1
64 #define BYTES_BIG_ENDIAN 1
66 #define WORDS_BIG_ENDIAN 1
68 #define UNITS_PER_WORD 4
70 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
73 if (GET_MODE_CLASS (MODE) == MODE_INT \
74 && GET_MODE_SIZE (MODE) < 4) \
79 #define PARM_BOUNDARY 32
81 #define STACK_BOUNDARY 32
83 #define FUNCTION_BOUNDARY 32
85 #define BIGGEST_ALIGNMENT 32
87 #define DATA_ALIGNMENT(TYPE, ALIGN) \
88 (TREE_CODE (TYPE) == ARRAY_TYPE \
89 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
90 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
92 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
93 (TREE_CODE (EXP) == STRING_CST \
94 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
96 #define STRICT_ALIGNMENT 1
98 #define PCC_BITFIELD_TYPE_MATTERS 1
101 /*{{{ Layout of Source Language Data Types. */
103 #define SHORT_TYPE_SIZE 16
104 #define INT_TYPE_SIZE 32
105 #define LONG_TYPE_SIZE 32
106 #define LONG_LONG_TYPE_SIZE 64
107 #define FLOAT_TYPE_SIZE 32
108 #define DOUBLE_TYPE_SIZE 64
109 #define LONG_DOUBLE_TYPE_SIZE 64
111 #define DEFAULT_SIGNED_CHAR 1
114 #define SIZE_TYPE "unsigned int"
117 #define PTRDIFF_TYPE "int"
120 #define WCHAR_TYPE "long int"
122 #undef WCHAR_TYPE_SIZE
123 #define WCHAR_TYPE_SIZE BITS_PER_WORD
126 /*{{{ REGISTER BASICS. */
128 /* Number of hardware registers known to the compiler. They receive numbers 0
129 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number
130 really is assigned the number `FIRST_PSEUDO_REGISTER'. */
131 #define FIRST_PSEUDO_REGISTER 21
133 /* Fixed register assignments: */
135 /* Here we do a BAD THING - reserve a register for use by the machine
136 description file. There are too many places in compiler where it
137 assumes that it can issue a branch or jump instruction without
138 providing a scratch register for it, and reload just cannot cope, so
139 we keep a register back for these situations. */
140 #define COMPILER_SCRATCH_REGISTER 0
142 /* The register that contains the result of a function call. */
143 #define RETURN_VALUE_REGNUM 4
145 /* The first register that can contain the arguments to a function. */
146 #define FIRST_ARG_REGNUM 4
148 /* A call-used register that can be used during the function prologue. */
149 #define PROLOGUE_TMP_REGNUM COMPILER_SCRATCH_REGISTER
151 /* Register numbers used for passing a function's static chain pointer. If
152 register windows are used, the register number as seen by the called
153 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as
154 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers
155 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined.
157 The static chain register need not be a fixed register.
159 If the static chain is passed in memory, these macros should not be defined;
160 instead, the next two macros should be defined. */
161 #define STATIC_CHAIN_REGNUM 12
162 /* #define STATIC_CHAIN_INCOMING_REGNUM */
164 /* An FR30 specific hardware register. */
165 #define ACCUMULATOR_REGNUM 13
167 /* The register number of the frame pointer register, which is used to access
168 automatic variables in the stack frame. On some machines, the hardware
169 determines which register this is. On other machines, you can choose any
170 register you wish for this purpose. */
171 #define FRAME_POINTER_REGNUM 14
173 /* The register number of the stack pointer register, which must also be a
174 fixed register according to `FIXED_REGISTERS'. On most machines, the
175 hardware determines which register this is. */
176 #define STACK_POINTER_REGNUM 15
178 /* The following a fake hard registers that describe some of the dedicated
179 registers on the FR30. */
180 #define CONDITION_CODE_REGNUM 16
181 #define RETURN_POINTER_REGNUM 17
182 #define MD_HIGH_REGNUM 18
183 #define MD_LOW_REGNUM 19
185 /* An initializer that says which registers are used for fixed purposes all
186 throughout the compiled code and are therefore not available for general
187 allocation. These would include the stack pointer, the frame pointer
188 (except on machines where that can be used as a general register when no
189 frame pointer is needed), the program counter on machines where that is
190 considered one of the addressable registers, and any other numbered register
193 This information is expressed as a sequence of numbers, separated by commas
194 and surrounded by braces. The Nth number is 1 if register N is fixed, 0
197 The table initialized from this macro, and the table initialized by the
198 following one, may be overridden at run time either automatically, by the
199 actions of the macro `TARGET_CONDITIONAL_REGISTER_USAGE', or by the user
200 with the command options `-ffixed-REG', `-fcall-used-REG' and
201 `-fcall-saved-REG'. */
202 #define FIXED_REGISTERS \
203 { 1, 0, 0, 0, 0, 0, 0, 0, /* 0 - 7 */ \
204 0, 0, 0, 0, 0, 0, 0, 1, /* 8 - 15 */ \
205 1, 1, 1, 1, 1 } /* 16 - 20 */
207 /* XXX - MDL and MDH set as fixed for now - this is until I can get the
208 mul patterns working. */
210 /* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in
211 general) by function calls as well as for fixed registers. This macro
212 therefore identifies the registers that are not available for general
213 allocation of values that must live across function calls.
215 If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically
216 saves it on function entry and restores it on function exit, if the register
217 is used within the function. */
218 #define CALL_USED_REGISTERS \
219 { 1, 1, 1, 1, 1, 1, 1, 1, /* 0 - 7 */ \
220 0, 0, 0, 0, 1, 1, 0, 1, /* 8 - 15 */ \
221 1, 1, 1, 1, 1 } /* 16 - 20 */
223 /* A C initializer containing the assembler's names for the machine registers,
224 each one as a C string constant. This is what translates register numbers
225 in the compiler into assembler language. */
226 #define REGISTER_NAMES \
227 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
228 "r8", "r9", "r10", "r11", "r12", "ac", "fp", "sp", \
229 "cc", "rp", "mdh", "mdl", "ap" \
232 /* If defined, a C initializer for an array of structures containing a name and
233 a register number. This macro defines additional names for hard registers,
234 thus allowing the `asm' option in declarations to refer to registers using
236 #define ADDITIONAL_REGISTER_NAMES \
238 {"r13", 13}, {"r14", 14}, {"r15", 15}, {"usp", 15}, {"ps", 16}\
242 /*{{{ How Values Fit in Registers. */
244 /* A C expression for the number of consecutive hard registers, starting at
245 register number REGNO, required to hold a value of mode MODE. */
247 #define HARD_REGNO_NREGS(REGNO, MODE) \
248 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
250 /* A C expression that is nonzero if it is permissible to store a value of mode
251 MODE in hard register number REGNO (or in several registers starting with
254 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
256 /* A C expression that is nonzero if it is desirable to choose register
257 allocation so as to avoid move instructions between a value of mode MODE1
258 and a value of mode MODE2.
260 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are
261 ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be
263 #define MODES_TIEABLE_P(MODE1, MODE2) 1
266 /*{{{ Register Classes. */
268 /* An enumeral type that must be defined with all the register class names as
269 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last
270 register class, followed by one more enumeral value, `LIM_REG_CLASSES',
271 which is not a register class but rather tells how many classes there are.
273 Each register class has a number, which is the value of casting the class
274 name to type `int'. The number serves as an index in many of the tables
279 MULTIPLY_32_REG, /* the MDL register as used by the MULH, MULUH insns */
280 MULTIPLY_64_REG, /* the MDH,MDL register pair as used by MUL and MULU */
281 LOW_REGS, /* registers 0 through 7 */
282 HIGH_REGS, /* registers 8 through 15 */
283 REAL_REGS, /* i.e. all the general hardware registers on the FR30 */
288 #define GENERAL_REGS REAL_REGS
289 #define N_REG_CLASSES ((int) LIM_REG_CLASSES)
291 /* An initializer containing the names of the register classes as C string
292 constants. These names are used in writing some of the debugging dumps. */
293 #define REG_CLASS_NAMES \
304 /* An initializer containing the contents of the register classes, as integers
305 which are bit masks. The Nth integer specifies the contents of class N.
306 The way the integer MASK is interpreted is that register R is in the class
307 if `MASK & (1 << R)' is 1.
309 When the machine has more than 32 registers, an integer does not suffice.
310 Then the integers are replaced by sub-initializers, braced groupings
311 containing several integers. Each sub-initializer must be suitable as an
312 initializer for the type `HARD_REG_SET' which is defined in
314 #define REG_CLASS_CONTENTS \
317 { 1 << MD_LOW_REGNUM }, \
318 { (1 << MD_LOW_REGNUM) | (1 << MD_HIGH_REGNUM) }, \
320 { ((1 << 8) - 1) << 8 }, \
321 { (1 << CONDITION_CODE_REGNUM) - 1 }, \
322 { (1 << FIRST_PSEUDO_REGISTER) - 1 } \
325 /* A C expression whose value is a register class containing hard register
326 REGNO. In general there is more than one such class; choose a class which
327 is "minimal", meaning that no smaller class also contains the register. */
328 #define REGNO_REG_CLASS(REGNO) \
329 ( (REGNO) < 8 ? LOW_REGS \
330 : (REGNO) < CONDITION_CODE_REGNUM ? HIGH_REGS \
331 : (REGNO) == MD_LOW_REGNUM ? MULTIPLY_32_REG \
332 : (REGNO) == MD_HIGH_REGNUM ? MULTIPLY_64_REG \
335 /* A macro whose definition is the name of the class to which a valid base
336 register must belong. A base register is one used in an address which is
337 the register value plus a displacement. */
338 #define BASE_REG_CLASS REAL_REGS
340 /* A macro whose definition is the name of the class to which a valid index
341 register must belong. An index register is one used in an address where its
342 value is either multiplied by a scale factor or added to another register
343 (as well as added to a displacement). */
344 #define INDEX_REG_CLASS REAL_REGS
346 /* A C expression which is nonzero if register number NUM is suitable for use
347 as a base register in operand addresses. It may be either a suitable hard
348 register or a pseudo register that has been allocated such a hard register. */
349 #define REGNO_OK_FOR_BASE_P(NUM) 1
351 /* A C expression which is nonzero if register number NUM is suitable for use
352 as an index register in operand addresses. It may be either a suitable hard
353 register or a pseudo register that has been allocated such a hard register.
355 The difference between an index register and a base register is that the
356 index register may be scaled. If an address involves the sum of two
357 registers, neither one of them scaled, then either one may be labeled the
358 "base" and the other the "index"; but whichever labeling is used must fit
359 the machine's constraints of which registers may serve in each capacity.
360 The compiler will try both labelings, looking for one that is valid, and
361 will reload one or both registers only if neither labeling works. */
362 #define REGNO_OK_FOR_INDEX_P(NUM) 1
364 /* A C expression for the maximum number of consecutive registers of
365 class CLASS needed to hold a value of mode MODE.
367 This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value
368 of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of
369 `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS.
371 This macro helps control the handling of multiple-word values in
373 #define CLASS_MAX_NREGS(CLASS, MODE) HARD_REGNO_NREGS (0, MODE)
376 /*{{{ Basic Stack Layout. */
378 /* Define this macro if pushing a word onto the stack moves the stack pointer
379 to a smaller address. */
380 #define STACK_GROWS_DOWNWARD 1
382 /* Define this to macro nonzero if the addresses of local variable slots
383 are at negative offsets from the frame pointer. */
384 #define FRAME_GROWS_DOWNWARD 1
386 /* Offset from the frame pointer to the first local variable slot to be
389 If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the
390 first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by
391 adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */
392 /* #define STARTING_FRAME_OFFSET -4 */
393 #define STARTING_FRAME_OFFSET 0
395 /* Offset from the stack pointer register to the first location at which
396 outgoing arguments are placed. If not specified, the default value of zero
397 is used. This is the proper value for most machines.
399 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
400 location at which outgoing arguments are placed. */
401 #define STACK_POINTER_OFFSET 0
403 /* Offset from the argument pointer register to the first argument's address.
404 On some machines it may depend on the data type of the function.
406 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
407 argument's address. */
408 #define FIRST_PARM_OFFSET(FUNDECL) 0
410 /* A C expression whose value is RTL representing the location of the incoming
411 return address at the beginning of any function, before the prologue. This
412 RTL is either a `REG', indicating that the return value is saved in `REG',
413 or a `MEM' representing a location in the stack.
415 You only need to define this macro if you want to support call frame
416 debugging information like that provided by DWARF 2. */
417 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM)
420 /*{{{ Register That Address the Stack Frame. */
422 /* The register number of the arg pointer register, which is used to access the
423 function's argument list. On some machines, this is the same as the frame
424 pointer register. On some machines, the hardware determines which register
425 this is. On other machines, you can choose any register you wish for this
426 purpose. If this is not the same register as the frame pointer register,
427 then you must mark it as a fixed register according to `FIXED_REGISTERS', or
428 arrange to be able to eliminate it. */
429 #define ARG_POINTER_REGNUM 20
432 /*{{{ Eliminating the Frame Pointer and the Arg Pointer. */
434 /* If defined, this macro specifies a table of register pairs used to eliminate
435 unneeded registers that point into the stack frame. If it is not defined,
436 the only elimination attempted by the compiler is to replace references to
437 the frame pointer with references to the stack pointer.
439 The definition of this macro is a list of structure initializations, each of
440 which specifies an original and replacement register.
442 On some machines, the position of the argument pointer is not known until
443 the compilation is completed. In such a case, a separate hard register must
444 be used for the argument pointer. This register can be eliminated by
445 replacing it with either the frame pointer or the argument pointer,
446 depending on whether or not the frame pointer has been eliminated.
448 In this case, you might specify:
449 #define ELIMINABLE_REGS \
450 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
451 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
452 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
454 Note that the elimination of the argument pointer with the stack pointer is
455 specified first since that is the preferred elimination. */
457 #define ELIMINABLE_REGS \
459 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
460 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
461 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
464 /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the
465 initial difference between the specified pair of registers. This macro must
466 be defined if `ELIMINABLE_REGS' is defined. */
467 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
468 (OFFSET) = fr30_compute_frame_size (FROM, TO)
471 /*{{{ Passing Function Arguments on the Stack. */
473 /* If defined, the maximum amount of space required for outgoing arguments will
474 be computed and placed into the variable
475 `crtl->outgoing_args_size'. No space will be pushed onto the
476 stack for each call; instead, the function prologue should increase the
477 stack frame size by this amount.
479 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not
481 #define ACCUMULATE_OUTGOING_ARGS 1
484 /*{{{ Function Arguments in Registers. */
486 /* The number of register assigned to holding function arguments. */
488 #define FR30_NUM_ARG_REGS 4
490 /* A C type for declaring a variable that is used as the first argument of
491 `FUNCTION_ARG' and other related values. For some target machines, the type
492 `int' suffices and can hold the number of bytes of argument so far.
494 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments
495 that have been passed on the stack. The compiler has other variables to
496 keep track of that. For target machines on which all arguments are passed
497 on the stack, there is no need to store anything in `CUMULATIVE_ARGS';
498 however, the data structure must exist and should not be empty, so use
500 /* On the FR30 this value is an accumulating count of the number of argument
501 registers that have been filled with argument values, as opposed to say,
502 the number of bytes of argument accumulated so far. */
503 #define CUMULATIVE_ARGS int
505 /* A C statement (sans semicolon) for initializing the variable CUM for the
506 state at the beginning of the argument list. The variable has type
507 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type
508 of the function which will receive the args, or 0 if the args are to a
509 compiler support library function. The value of INDIRECT is nonzero when
510 processing an indirect call, for example a call through a function pointer.
511 The value of INDIRECT is zero for a call to an explicitly named function, a
512 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find
513 arguments for the function being compiled.
515 When processing a call to a compiler support library function, LIBNAME
516 identifies which one. It is a `symbol_ref' rtx which contains the name of
517 the function, as a string. LIBNAME is 0 when an ordinary C function call is
518 being processed. Thus, each time this macro is called, either LIBNAME or
519 FNTYPE is nonzero, but never both of them at once. */
520 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
523 /* A C expression that is nonzero if REGNO is the number of a hard register in
524 which function arguments are sometimes passed. This does *not* include
525 implicit arguments such as the static chain and the structure-value address.
526 On many machines, no registers can be used for this purpose since all
527 function arguments are pushed on the stack. */
528 #define FUNCTION_ARG_REGNO_P(REGNO) \
529 ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) < FIRST_ARG_REGNUM + FR30_NUM_ARG_REGS))
532 /*{{{ How Large Values are Returned. */
534 /* Define this macro to be 1 if all structure and union return values must be
535 in memory. Since this results in slower code, this should be defined only
536 if needed for compatibility with other compilers or with an ABI. If you
537 define this macro to be 0, then the conventions used for structure and union
538 return values are decided by the `TARGET_RETURN_IN_MEMORY' macro.
540 If not defined, this defaults to the value 1. */
541 #define DEFAULT_PCC_STRUCT_RETURN 1
544 /*{{{ Generating Code for Profiling. */
546 /* A C statement or compound statement to output to FILE some assembler code to
547 call the profiling subroutine `mcount'. Before calling, the assembler code
548 must load the address of a counter variable into a register where `mcount'
549 expects to find the address. The name of this variable is `LP' followed by
550 the number LABELNO, so you would generate the name using `LP%d' in a
553 The details of how the address should be passed to `mcount' are determined
554 by your operating system environment, not by GCC. To figure them out,
555 compile a small program for profiling using the system's installed C
556 compiler and look at the assembler code that results. */
557 #define FUNCTION_PROFILER(FILE, LABELNO) \
559 fprintf (FILE, "\t mov rp, r1\n" ); \
560 fprintf (FILE, "\t ldi:32 mcount, r0\n" ); \
561 fprintf (FILE, "\t call @r0\n" ); \
562 fprintf (FILE, ".word\tLP%d\n", LABELNO); \
566 /*{{{ Trampolines for Nested Functions. */
568 /* A C expression for the size in bytes of the trampoline, as an integer. */
569 #define TRAMPOLINE_SIZE 18
571 /* We want the trampoline to be aligned on a 32bit boundary so that we can
572 make sure the location of the static chain & target function within
573 the trampoline is also aligned on a 32bit boundary. */
574 #define TRAMPOLINE_ALIGNMENT 32
577 /*{{{ Addressing Modes. */
579 /* A number, the maximum number of registers that can appear in a valid memory
580 address. Note that it is up to you to specify a value equal to the maximum
581 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */
582 #define MAX_REGS_PER_ADDRESS 1
584 /* A C compound statement with a conditional `goto LABEL;' executed if X (an
585 RTX) is a legitimate memory address on the target machine for a memory
586 operand of mode MODE. */
588 /* On the FR30 we only have one real addressing mode - an address in a
589 register. There are three special cases however:
591 * indexed addressing using small positive offsets from the stack pointer
593 * indexed addressing using small signed offsets from the frame pointer
595 * register plus register addressing using R13 as the base register.
597 At the moment we only support the first two of these special cases. */
600 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
603 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
605 if (GET_CODE (X) == PLUS \
606 && ((MODE) == SImode || (MODE) == SFmode) \
607 && GET_CODE (XEXP (X, 0)) == REG \
608 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \
609 && GET_CODE (XEXP (X, 1)) == CONST_INT \
610 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \
612 if (GET_CODE (X) == PLUS \
613 && ((MODE) == SImode || (MODE) == SFmode) \
614 && GET_CODE (XEXP (X, 0)) == REG \
615 && REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \
616 && GET_CODE (XEXP (X, 1)) == CONST_INT \
617 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \
622 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
625 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
627 if (GET_CODE (X) == PLUS \
628 && ((MODE) == SImode || (MODE) == SFmode) \
629 && GET_CODE (XEXP (X, 0)) == REG \
630 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \
631 && GET_CODE (XEXP (X, 1)) == CONST_INT \
632 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \
634 if (GET_CODE (X) == PLUS \
635 && ((MODE) == SImode || (MODE) == SFmode) \
636 && GET_CODE (XEXP (X, 0)) == REG \
637 && (REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \
638 || REGNO (XEXP (X, 0)) == ARG_POINTER_REGNUM) \
639 && GET_CODE (XEXP (X, 1)) == CONST_INT \
640 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \
646 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
647 use as a base register. For hard registers, it should always accept those
648 which the hardware permits and reject the others. Whether the macro accepts
649 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as
650 described above. This usually requires two variant definitions, of which
651 `REG_OK_STRICT' controls the one actually used. */
653 #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) <= STACK_POINTER_REGNUM)
655 #define REG_OK_FOR_BASE_P(X) 1
658 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
659 use as an index register.
661 The difference between an index register and a base register is that the
662 index register may be scaled. If an address involves the sum of two
663 registers, neither one of them scaled, then either one may be labeled the
664 "base" and the other the "index"; but whichever labeling is used must fit
665 the machine's constraints of which registers may serve in each capacity.
666 The compiler will try both labelings, looking for one that is valid, and
667 will reload one or both registers only if neither labeling works. */
668 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
670 /* A C expression that is nonzero if X is a legitimate constant for an
671 immediate operand on the target machine. You can assume that X satisfies
672 `CONSTANT_P', so you need not check this. In fact, `1' is a suitable
673 definition for this macro on machines where anything `CONSTANT_P' is valid. */
674 #define LEGITIMATE_CONSTANT_P(X) 1
677 /*{{{ Describing Relative Costs of Operations */
679 /* Define this macro as a C expression which is nonzero if accessing less than
680 a word of memory (i.e. a `char' or a `short') is no faster than accessing a
681 word of memory, i.e., if such access require more than one instruction or if
682 there is no difference in cost between byte and (aligned) word loads.
684 When this macro is not defined, the compiler will access a field by finding
685 the smallest containing object; when it is defined, a fullword load will be
686 used if alignment permits. Unless bytes accesses are faster than word
687 accesses, using word accesses is preferable since it may eliminate
688 subsequent memory access if subsequent accesses occur to other fields in the
689 same word of the structure, but to different bytes. */
690 #define SLOW_BYTE_ACCESS 1
693 /*{{{ Dividing the output into sections. */
695 /* A C expression whose value is a string containing the assembler operation
696 that should precede instructions and read-only data. Normally `".text"' is
698 #define TEXT_SECTION_ASM_OP "\t.text"
700 /* A C expression whose value is a string containing the assembler operation to
701 identify the following data as writable initialized data. Normally
702 `".data"' is right. */
703 #define DATA_SECTION_ASM_OP "\t.data"
705 #define BSS_SECTION_ASM_OP "\t.section .bss"
708 /*{{{ The Overall Framework of an Assembler File. */
710 /* A C string constant describing how to begin a comment in the target
711 assembler language. The compiler assumes that the comment will end at the
713 #define ASM_COMMENT_START ";"
715 /* A C string constant for text to be output before each `asm' statement or
716 group of consecutive ones. Normally this is `"#APP"', which is a comment
717 that has no effect on most assemblers but tells the GNU assembler that it
718 must check the lines that follow for all valid assembler constructs. */
719 #define ASM_APP_ON "#APP\n"
721 /* A C string constant for text to be output after each `asm' statement or
722 group of consecutive ones. Normally this is `"#NO_APP"', which tells the
723 GNU assembler to resume making the time-saving assumptions that are valid
724 for ordinary compiler output. */
725 #define ASM_APP_OFF "#NO_APP\n"
728 /*{{{ Output and Generation of Labels. */
730 /* Globalizing directive for a label. */
731 #define GLOBAL_ASM_OP "\t.globl "
734 /*{{{ Output of Assembler Instructions. */
736 /* A C compound statement to output to stdio stream STREAM the assembler syntax
737 for an instruction operand X. X is an RTL expression.
739 CODE is a value that can be used to specify one of several ways of printing
740 the operand. It is used when identical operands must be printed differently
741 depending on the context. CODE comes from the `%' specification that was
742 used to request printing of the operand. If the specification was just
743 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is
744 the ASCII code for LTR.
746 If X is a register, this macro should print the register's name. The names
747 can be found in an array `reg_names' whose type is `char *[]'. `reg_names'
748 is initialized from `REGISTER_NAMES'.
750 When the machine description has a specification `%PUNCT' (a `%' followed by
751 a punctuation character), this macro is called with a null pointer for X and
752 the punctuation character for CODE. */
753 #define PRINT_OPERAND(STREAM, X, CODE) fr30_print_operand (STREAM, X, CODE)
755 /* A C expression which evaluates to true if CODE is a valid punctuation
756 character for use in the `PRINT_OPERAND' macro. If
757 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation
758 characters (except for the standard one, `%') are used in this way. */
759 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) (CODE == '#')
761 /* A C compound statement to output to stdio stream STREAM the assembler syntax
762 for an instruction operand that is a memory reference whose address is X. X
763 is an RTL expression. */
765 #define PRINT_OPERAND_ADDRESS(STREAM, X) fr30_print_operand_address (STREAM, X)
767 #define REGISTER_PREFIX "%"
768 #define LOCAL_LABEL_PREFIX "."
769 #define USER_LABEL_PREFIX ""
770 #define IMMEDIATE_PREFIX ""
773 /*{{{ Output of Dispatch Tables. */
775 /* This macro should be provided on machines where the addresses in a dispatch
776 table are relative to the table's own address.
778 The definition should be a C statement to output to the stdio stream STREAM
779 an assembler pseudo-instruction to generate a difference between two labels.
780 VALUE and REL are the numbers of two internal labels. The definitions of
781 these labels are output using `(*targetm.asm_out.internal_label)', and they must be
782 printed in the same way here. For example,
784 fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */
785 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
786 fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL)
788 /* This macro should be provided on machines where the addresses in a dispatch
791 The definition should be a C statement to output to the stdio stream STREAM
792 an assembler pseudo-instruction to generate a reference to a label. VALUE
793 is the number of an internal label whose definition is output using
794 `(*targetm.asm_out.internal_label)'. For example,
796 fprintf (STREAM, "\t.word L%d\n", VALUE) */
797 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
798 fprintf (STREAM, "\t.word .L%d\n", VALUE)
801 /*{{{ Assembler Commands for Alignment. */
803 /* A C statement to output to the stdio stream STREAM an assembler command to
804 advance the location counter to a multiple of 2 to the POWER bytes. POWER
805 will be a C expression of type `int'. */
806 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \
807 fprintf ((STREAM), "\t.p2align %d\n", (POWER))
810 /*{{{ Miscellaneous Parameters. */
812 /* An alias for a machine mode name. This is the machine mode that elements of
813 a jump-table should have. */
814 #define CASE_VECTOR_MODE SImode
816 /* The maximum number of bytes that a single instruction can move quickly from
820 /* A C expression which is nonzero if on this machine it is safe to "convert"
821 an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller
822 than INPREC) by merely operating on it as if it had only OUTPREC bits.
824 On many machines, this expression can be 1.
826 When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for
827 which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the
828 case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve
830 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
832 /* An alias for the machine mode for pointers. On most machines, define this
833 to be the integer mode corresponding to the width of a hardware pointer;
834 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines
835 you must define this to be one of the partial integer modes, such as
838 The width of `Pmode' must be at least as large as the value of
839 `POINTER_SIZE'. If it is not equal, you must define the macro
840 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */
843 /* An alias for the machine mode used for memory references to functions being
844 called, in `call' RTL expressions. On most machines this should be
846 #define FUNCTION_MODE QImode
848 /* If cross-compiling, don't require stdio.h etc to build libgcc.a. */
849 #if defined CROSS_DIRECTORY_STRUCTURE && ! defined inhibit_libc
855 /* Local Variables: */