1 /* Definitions for the Blackfin port.
2 Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
3 Free Software Foundation, Inc.
4 Contributed by Analog Devices.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published
10 by the Free Software Foundation; either version 3, or (at your
11 option) any later version.
13 GCC is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
26 #include "config/bfin/bfin-opts.h"
29 #define OBJECT_FORMAT_ELF
34 /* Predefinition in the preprocessor for this target machine */
35 #ifndef TARGET_CPU_CPP_BUILTINS
36 #define TARGET_CPU_CPP_BUILTINS() \
39 builtin_define_std ("bfin"); \
40 builtin_define_std ("BFIN"); \
41 builtin_define ("__ADSPBLACKFIN__"); \
42 builtin_define ("__ADSPLPBLACKFIN__"); \
44 switch (bfin_cpu_type) \
46 case BFIN_CPU_BF512: \
47 builtin_define ("__ADSPBF512__"); \
48 builtin_define ("__ADSPBF51x__"); \
50 case BFIN_CPU_BF514: \
51 builtin_define ("__ADSPBF514__"); \
52 builtin_define ("__ADSPBF51x__"); \
54 case BFIN_CPU_BF516: \
55 builtin_define ("__ADSPBF516__"); \
56 builtin_define ("__ADSPBF51x__"); \
58 case BFIN_CPU_BF518: \
59 builtin_define ("__ADSPBF518__"); \
60 builtin_define ("__ADSPBF51x__"); \
62 case BFIN_CPU_BF522: \
63 builtin_define ("__ADSPBF522__"); \
64 builtin_define ("__ADSPBF52x__"); \
66 case BFIN_CPU_BF523: \
67 builtin_define ("__ADSPBF523__"); \
68 builtin_define ("__ADSPBF52x__"); \
70 case BFIN_CPU_BF524: \
71 builtin_define ("__ADSPBF524__"); \
72 builtin_define ("__ADSPBF52x__"); \
74 case BFIN_CPU_BF525: \
75 builtin_define ("__ADSPBF525__"); \
76 builtin_define ("__ADSPBF52x__"); \
78 case BFIN_CPU_BF526: \
79 builtin_define ("__ADSPBF526__"); \
80 builtin_define ("__ADSPBF52x__"); \
82 case BFIN_CPU_BF527: \
83 builtin_define ("__ADSPBF527__"); \
84 builtin_define ("__ADSPBF52x__"); \
86 case BFIN_CPU_BF531: \
87 builtin_define ("__ADSPBF531__"); \
89 case BFIN_CPU_BF532: \
90 builtin_define ("__ADSPBF532__"); \
92 case BFIN_CPU_BF533: \
93 builtin_define ("__ADSPBF533__"); \
95 case BFIN_CPU_BF534: \
96 builtin_define ("__ADSPBF534__"); \
98 case BFIN_CPU_BF536: \
99 builtin_define ("__ADSPBF536__"); \
101 case BFIN_CPU_BF537: \
102 builtin_define ("__ADSPBF537__"); \
104 case BFIN_CPU_BF538: \
105 builtin_define ("__ADSPBF538__"); \
107 case BFIN_CPU_BF539: \
108 builtin_define ("__ADSPBF539__"); \
110 case BFIN_CPU_BF542M: \
111 builtin_define ("__ADSPBF542M__"); \
112 case BFIN_CPU_BF542: \
113 builtin_define ("__ADSPBF542__"); \
114 builtin_define ("__ADSPBF54x__"); \
116 case BFIN_CPU_BF544M: \
117 builtin_define ("__ADSPBF544M__"); \
118 case BFIN_CPU_BF544: \
119 builtin_define ("__ADSPBF544__"); \
120 builtin_define ("__ADSPBF54x__"); \
122 case BFIN_CPU_BF547M: \
123 builtin_define ("__ADSPBF547M__"); \
124 case BFIN_CPU_BF547: \
125 builtin_define ("__ADSPBF547__"); \
126 builtin_define ("__ADSPBF54x__"); \
128 case BFIN_CPU_BF548M: \
129 builtin_define ("__ADSPBF548M__"); \
130 case BFIN_CPU_BF548: \
131 builtin_define ("__ADSPBF548__"); \
132 builtin_define ("__ADSPBF54x__"); \
134 case BFIN_CPU_BF549M: \
135 builtin_define ("__ADSPBF549M__"); \
136 case BFIN_CPU_BF549: \
137 builtin_define ("__ADSPBF549__"); \
138 builtin_define ("__ADSPBF54x__"); \
140 case BFIN_CPU_BF561: \
141 builtin_define ("__ADSPBF561__"); \
145 if (bfin_si_revision != -1) \
147 /* space of 0xnnnn and a NUL */ \
148 char *buf = XALLOCAVEC (char, 7); \
150 sprintf (buf, "0x%04x", bfin_si_revision); \
151 builtin_define_with_value ("__SILICON_REVISION__", buf, 0); \
154 if (bfin_workarounds) \
155 builtin_define ("__WORKAROUNDS_ENABLED"); \
156 if (ENABLE_WA_SPECULATIVE_LOADS) \
157 builtin_define ("__WORKAROUND_SPECULATIVE_LOADS"); \
158 if (ENABLE_WA_SPECULATIVE_SYNCS) \
159 builtin_define ("__WORKAROUND_SPECULATIVE_SYNCS"); \
160 if (ENABLE_WA_INDIRECT_CALLS) \
161 builtin_define ("__WORKAROUND_INDIRECT_CALLS"); \
162 if (ENABLE_WA_RETS) \
163 builtin_define ("__WORKAROUND_RETS"); \
167 builtin_define ("__BFIN_FDPIC__"); \
168 builtin_define ("__FDPIC__"); \
170 if (TARGET_ID_SHARED_LIBRARY \
171 && !TARGET_SEP_DATA) \
172 builtin_define ("__ID_SHARED_LIB__"); \
173 if (flag_no_builtin) \
174 builtin_define ("__NO_BUILTIN"); \
175 if (TARGET_MULTICORE) \
176 builtin_define ("__BFIN_MULTICORE"); \
178 builtin_define ("__BFIN_COREA"); \
180 builtin_define ("__BFIN_COREB"); \
182 builtin_define ("__BFIN_SDRAM"); \
187 #define DRIVER_SELF_SPECS SUBTARGET_DRIVER_SELF_SPECS "\
188 %{mleaf-id-shared-library:%{!mid-shared-library:-mid-shared-library}} \
189 %{mfdpic:%{!fpic:%{!fpie:%{!fPIC:%{!fPIE:\
190 %{!fno-pic:%{!fno-pie:%{!fno-PIC:%{!fno-PIE:-fpie}}}}}}}}} \
192 #ifndef SUBTARGET_DRIVER_SELF_SPECS
193 # define SUBTARGET_DRIVER_SELF_SPECS
196 #define LINK_GCC_C_SEQUENCE_SPEC "\
197 %{mfast-fp:-lbffastfp} %G %L %{mfast-fp:-lbffastfp} %G \
202 %{mno-fdpic:-mnopic} %{mfdpic}"
206 %{mfdpic:-melf32bfinfd -z text} \
207 %{static:-dn -Bstatic} \
208 %{shared:-G -Bdynamic} \
209 %{symbolic:-Bsymbolic} \
210 -init __init -fini __fini "
212 /* Generate DSP instructions, like DSP halfword loads */
213 #define TARGET_DSP (1)
215 #define TARGET_DEFAULT 0
217 /* Maximum number of library ids we permit */
218 #define MAX_LIBRARY_ID 255
220 extern const char *bfin_library_id_string;
222 #define FUNCTION_MODE SImode
225 /* store-condition-codes instructions store 0 for false
226 This is the value stored for true. */
227 #define STORE_FLAG_VALUE 1
229 /* Define this if pushing a word on the stack
230 makes the stack pointer a smaller address. */
231 #define STACK_GROWS_DOWNWARD
233 #define STACK_PUSH_CODE PRE_DEC
235 /* Define this to nonzero if the nominal address of the stack frame
236 is at the high-address end of the local variables;
237 that is, each additional local variable allocated
238 goes at a more negative offset in the frame. */
239 #define FRAME_GROWS_DOWNWARD 1
241 /* We define a dummy ARGP register; the parameters start at offset 0 from
243 #define FIRST_PARM_OFFSET(DECL) 0
245 /* Offset within stack frame to start allocating local variables at.
246 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
247 first local allocated. Otherwise, it is the offset to the BEGINNING
248 of the first local allocated. */
249 #define STARTING_FRAME_OFFSET 0
251 /* Register to use for pushing function arguments. */
252 #define STACK_POINTER_REGNUM REG_P6
254 /* Base register for access to local variables of the function. */
255 #define FRAME_POINTER_REGNUM REG_P7
257 /* A dummy register that will be eliminated to either FP or SP. */
258 #define ARG_POINTER_REGNUM REG_ARGP
260 /* `PIC_OFFSET_TABLE_REGNUM'
261 The register number of the register used to address a table of
262 static data addresses in memory. In some cases this register is
263 defined by a processor's "application binary interface" (ABI).
264 When this macro is defined, RTL is generated for this register
265 once, as with the stack pointer and frame pointer registers. If
266 this macro is not defined, it is up to the machine-dependent files
267 to allocate such a register (if necessary). */
268 #define PIC_OFFSET_TABLE_REGNUM (REG_P5)
270 #define FDPIC_FPTR_REGNO REG_P1
271 #define FDPIC_REGNO REG_P3
272 #define OUR_FDPIC_REG get_hard_reg_initial_val (SImode, FDPIC_REGNO)
274 /* A static chain register for nested functions. We need to use a
275 call-clobbered register for this. */
276 #define STATIC_CHAIN_REGNUM REG_P2
278 /* Define this if functions should assume that stack space has been
279 allocated for arguments even when their values are passed in
282 The value of this macro is the size, in bytes, of the area reserved for
283 arguments passed in registers.
285 This space can either be allocated by the caller or be a part of the
286 machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE'
288 #define FIXED_STACK_AREA 12
289 #define REG_PARM_STACK_SPACE(FNDECL) FIXED_STACK_AREA
291 /* Define this if the above stack space is to be considered part of the
292 * space allocated by the caller. */
293 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1
295 /* Define this if the maximum size of all the outgoing args is to be
296 accumulated and pushed during the prologue. The amount can be
297 found in the variable crtl->outgoing_args_size. */
298 #define ACCUMULATE_OUTGOING_ARGS 1
300 /*#define DATA_ALIGNMENT(TYPE, BASIC-ALIGN) for arrays.. */
302 /* If defined, a C expression to compute the alignment for a local
303 variable. TYPE is the data type, and ALIGN is the alignment that
304 the object would ordinarily have. The value of this macro is used
305 instead of that alignment to align the object.
307 If this macro is not defined, then ALIGN is used.
309 One use of this macro is to increase alignment of medium-size
310 data to make it all fit in fewer cache lines. */
312 #define LOCAL_ALIGNMENT(TYPE, ALIGN) bfin_local_alignment ((TYPE), (ALIGN))
314 /* Make strings word-aligned so strcpy from constants will be faster. */
315 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
316 (TREE_CODE (EXP) == STRING_CST \
317 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
319 #define TRAMPOLINE_SIZE (TARGET_FDPIC ? 30 : 18)
321 /* Definitions for register eliminations.
323 This is an array of structures. Each structure initializes one pair
324 of eliminable registers. The "from" register number is given first,
325 followed by "to". Eliminations of the same "from" register are listed
326 in order of preference.
328 There are two registers that can always be eliminated on the i386.
329 The frame pointer and the arg pointer can be replaced by either the
330 hard frame pointer or to the stack pointer, depending upon the
331 circumstances. The hard frame pointer is not used before reload and
332 so it is not eligible for elimination. */
334 #define ELIMINABLE_REGS \
335 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
336 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
337 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} \
339 /* Define the offset between two registers, one to be eliminated, and the other
340 its replacement, at the start of a routine. */
342 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
343 ((OFFSET) = bfin_initial_elimination_offset ((FROM), (TO)))
345 /* This processor has
346 8 data register for doing arithmetic
347 8 pointer register for doing addressing, including
350 4 sets of indexing registers (I0-3, B0-3, L0-3, M0-3)
351 1 condition code flag register CC
352 5 return address registers RETS/I/X/N/E
353 1 arithmetic status register (ASTAT). */
355 #define FIRST_PSEUDO_REGISTER 50
357 #define D_REGNO_P(X) ((X) <= REG_R7)
358 #define P_REGNO_P(X) ((X) >= REG_P0 && (X) <= REG_P7)
359 #define I_REGNO_P(X) ((X) >= REG_I0 && (X) <= REG_I3)
360 #define DP_REGNO_P(X) (D_REGNO_P (X) || P_REGNO_P (X))
361 #define ADDRESS_REGNO_P(X) ((X) >= REG_P0 && (X) <= REG_M3)
362 #define DREG_P(X) (REG_P (X) && D_REGNO_P (REGNO (X)))
363 #define PREG_P(X) (REG_P (X) && P_REGNO_P (REGNO (X)))
364 #define IREG_P(X) (REG_P (X) && I_REGNO_P (REGNO (X)))
365 #define DPREG_P(X) (REG_P (X) && DP_REGNO_P (REGNO (X)))
367 #define REGISTER_NAMES { \
368 "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", \
369 "P0", "P1", "P2", "P3", "P4", "P5", "SP", "FP", \
370 "I0", "I1", "I2", "I3", "B0", "B1", "B2", "B3", \
371 "L0", "L1", "L2", "L3", "M0", "M1", "M2", "M3", \
374 "RETS", "RETI", "RETX", "RETN", "RETE", "ASTAT", "SEQSTAT", "USP", \
376 "LT0", "LT1", "LC0", "LC1", "LB0", "LB1" \
379 #define SHORT_REGISTER_NAMES { \
380 "R0.L", "R1.L", "R2.L", "R3.L", "R4.L", "R5.L", "R6.L", "R7.L", \
381 "P0.L", "P1.L", "P2.L", "P3.L", "P4.L", "P5.L", "SP.L", "FP.L", \
382 "I0.L", "I1.L", "I2.L", "I3.L", "B0.L", "B1.L", "B2.L", "B3.L", \
383 "L0.L", "L1.L", "L2.L", "L3.L", "M0.L", "M1.L", "M2.L", "M3.L", }
385 #define HIGH_REGISTER_NAMES { \
386 "R0.H", "R1.H", "R2.H", "R3.H", "R4.H", "R5.H", "R6.H", "R7.H", \
387 "P0.H", "P1.H", "P2.H", "P3.H", "P4.H", "P5.H", "SP.H", "FP.H", \
388 "I0.H", "I1.H", "I2.H", "I3.H", "B0.H", "B1.H", "B2.H", "B3.H", \
389 "L0.H", "L1.H", "L2.H", "L3.H", "M0.H", "M1.H", "M2.H", "M3.H", }
391 #define DREGS_PAIR_NAMES { \
392 "R1:0.p", 0, "R3:2.p", 0, "R5:4.p", 0, "R7:6.p", 0, }
394 #define BYTE_REGISTER_NAMES { \
395 "R0.B", "R1.B", "R2.B", "R3.B", "R4.B", "R5.B", "R6.B", "R7.B", }
398 /* 1 for registers that have pervasive standard uses
399 and are not available for the register allocator. */
401 #define FIXED_REGISTERS \
402 /*r0 r1 r2 r3 r4 r5 r6 r7 p0 p1 p2 p3 p4 p5 p6 p7 */ \
403 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, \
404 /*i0 i1 i2 i3 b0 b1 b2 b3 l0 l1 l2 l3 m0 m1 m2 m3 */ \
405 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, \
406 /*a0 a1 cc rets/i/x/n/e astat seqstat usp argp lt0/1 lc0/1 */ \
407 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
412 /* 1 for registers not available across function calls.
413 These must include the FIXED_REGISTERS and also any
414 registers that can be used without being saved.
415 The latter must include the registers where values are returned
416 and the register where structure-value addresses are passed.
417 Aside from that, you can include as many other registers as you like. */
419 #define CALL_USED_REGISTERS \
420 /*r0 r1 r2 r3 r4 r5 r6 r7 p0 p1 p2 p3 p4 p5 p6 p7 */ \
421 { 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, \
422 /*i0 i1 i2 i3 b0 b1 b2 b3 l0 l1 l2 l3 m0 m1 m2 m3 */ \
423 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
424 /*a0 a1 cc rets/i/x/n/e astat seqstat usp argp lt0/1 lc0/1 */ \
425 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
430 /* Order in which to allocate registers. Each register must be
431 listed once, even those in FIXED_REGISTERS. List frame pointer
432 late and fixed registers last. Note that, in general, we prefer
433 registers listed in CALL_USED_REGISTERS, keeping the others
434 available for storage of persistent values. */
436 #define REG_ALLOC_ORDER \
437 { REG_R0, REG_R1, REG_R2, REG_R3, REG_R7, REG_R6, REG_R5, REG_R4, \
438 REG_P2, REG_P1, REG_P0, REG_P5, REG_P4, REG_P3, REG_P6, REG_P7, \
440 REG_I0, REG_I1, REG_I2, REG_I3, REG_B0, REG_B1, REG_B2, REG_B3, \
441 REG_L0, REG_L1, REG_L2, REG_L3, REG_M0, REG_M1, REG_M2, REG_M3, \
442 REG_RETS, REG_RETI, REG_RETX, REG_RETN, REG_RETE, \
443 REG_ASTAT, REG_SEQSTAT, REG_USP, \
445 REG_LT0, REG_LT1, REG_LC0, REG_LC1, REG_LB0, REG_LB1 \
448 /* Define the classes of registers for register constraints in the
449 machine description. Also define ranges of constants.
451 One of the classes must always be named ALL_REGS and include all hard regs.
452 If there is more than one class, another class must be named NO_REGS
453 and contain no registers.
455 The name GENERAL_REGS must be the name of a class (or an alias for
456 another name such as ALL_REGS). This is the class of registers
457 that is allowed by "g" or "r" in a register constraint.
458 Also, registers outside this class are allocated only when
459 instructions express preferences for them.
461 The classes must be numbered in nondecreasing order; that is,
462 a larger-numbered class must never be contained completely
463 in a smaller-numbered class.
465 For any two classes, it is very desirable that there be another
466 class that represents their union. */
476 CIRCREGS, /* Circular buffering registers, Ix, Bx, Lx together form. See Automatic Circular Buffering. */
506 ALL_REGS, LIM_REG_CLASSES
509 #define N_REG_CLASSES ((int)LIM_REG_CLASSES)
511 #define GENERAL_REGS DPREGS
513 /* Give names of register classes as strings for dump file. */
515 #define REG_CLASS_NAMES \
553 /* An initializer containing the contents of the register classes, as integers
554 which are bit masks. The Nth integer specifies the contents of class N.
555 The way the integer MASK is interpreted is that register R is in the class
556 if `MASK & (1 << R)' is 1.
558 When the machine has more than 32 registers, an integer does not suffice.
559 Then the integers are replaced by sub-initializers, braced groupings
560 containing several integers. Each sub-initializer must be suitable as an
561 initializer for the type `HARD_REG_SET' which is defined in
564 /* NOTE: DSP registers, IREGS - AREGS, are not GENERAL_REGS. We use
565 MOST_REGS as the union of DPREGS and DAGREGS. */
567 #define REG_CLASS_CONTENTS \
569 { { 0x00000000, 0 }, /* NO_REGS */ \
570 { 0x000f0000, 0 }, /* IREGS */ \
571 { 0x00f00000, 0 }, /* BREGS */ \
572 { 0x0f000000, 0 }, /* LREGS */ \
573 { 0xf0000000, 0 }, /* MREGS */ \
574 { 0x0fff0000, 0 }, /* CIRCREGS */ \
575 { 0xffff0000, 0 }, /* DAGREGS */ \
576 { 0x00000000, 0x1 }, /* EVEN_AREGS */ \
577 { 0x00000000, 0x2 }, /* ODD_AREGS */ \
578 { 0x00000000, 0x3 }, /* AREGS */ \
579 { 0x00000000, 0x4 }, /* CCREGS */ \
580 { 0x00000055, 0 }, /* EVEN_DREGS */ \
581 { 0x000000aa, 0 }, /* ODD_DREGS */ \
582 { 0x00000001, 0 }, /* D0REGS */ \
583 { 0x00000002, 0 }, /* D1REGS */ \
584 { 0x00000004, 0 }, /* D2REGS */ \
585 { 0x00000008, 0 }, /* D3REGS */ \
586 { 0x00000010, 0 }, /* D4REGS */ \
587 { 0x00000020, 0 }, /* D5REGS */ \
588 { 0x00000040, 0 }, /* D6REGS */ \
589 { 0x00000080, 0 }, /* D7REGS */ \
590 { 0x000000ff, 0 }, /* DREGS */ \
591 { 0x00000100, 0x000 }, /* P0REGS */ \
592 { 0x00000800, 0x000 }, /* FDPIC_REGS */ \
593 { 0x00000200, 0x000 }, /* FDPIC_FPTR_REGS */ \
594 { 0x00004700, 0x800 }, /* PREGS_CLOBBERED */ \
595 { 0x0000ff00, 0x800 }, /* PREGS */ \
596 { 0x000fff00, 0x800 }, /* IPREGS */ \
597 { 0x0000ffff, 0x800 }, /* DPREGS */ \
598 { 0xffffffff, 0x800 }, /* MOST_REGS */\
599 { 0x00000000, 0x3000 }, /* LT_REGS */\
600 { 0x00000000, 0xc000 }, /* LC_REGS */\
601 { 0x00000000, 0x30000 }, /* LB_REGS */\
602 { 0x00000000, 0x3f7f8 }, /* PROLOGUE_REGS */\
603 { 0xffffffff, 0x3fff8 }, /* NON_A_CC_REGS */\
604 { 0xffffffff, 0x3ffff }} /* ALL_REGS */
606 #define IREG_POSSIBLE_P(OUTER) \
607 ((OUTER) == POST_INC || (OUTER) == PRE_INC \
608 || (OUTER) == POST_DEC || (OUTER) == PRE_DEC \
609 || (OUTER) == MEM || (OUTER) == ADDRESS)
611 #define MODE_CODE_BASE_REG_CLASS(MODE, OUTER, INDEX) \
612 ((MODE) == HImode && IREG_POSSIBLE_P (OUTER) ? IPREGS : PREGS)
614 #define INDEX_REG_CLASS PREGS
616 #define REGNO_OK_FOR_BASE_STRICT_P(X, MODE, OUTER, INDEX) \
617 (P_REGNO_P (X) || (X) == REG_ARGP \
618 || (IREG_POSSIBLE_P (OUTER) && (MODE) == HImode \
621 #define REGNO_OK_FOR_BASE_NONSTRICT_P(X, MODE, OUTER, INDEX) \
622 ((X) >= FIRST_PSEUDO_REGISTER \
623 || REGNO_OK_FOR_BASE_STRICT_P (X, MODE, OUTER, INDEX))
626 #define REGNO_MODE_CODE_OK_FOR_BASE_P(X, MODE, OUTER, INDEX) \
627 REGNO_OK_FOR_BASE_STRICT_P (X, MODE, OUTER, INDEX)
629 #define REGNO_MODE_CODE_OK_FOR_BASE_P(X, MODE, OUTER, INDEX) \
630 REGNO_OK_FOR_BASE_NONSTRICT_P (X, MODE, OUTER, INDEX)
633 #define REGNO_OK_FOR_INDEX_P(X) 0
635 /* The same information, inverted:
636 Return the class number of the smallest class containing
637 reg number REGNO. This could be a conditional expression
638 or could index an array. */
640 #define REGNO_REG_CLASS(REGNO) \
641 ((REGNO) == REG_R0 ? D0REGS \
642 : (REGNO) == REG_R1 ? D1REGS \
643 : (REGNO) == REG_R2 ? D2REGS \
644 : (REGNO) == REG_R3 ? D3REGS \
645 : (REGNO) == REG_R4 ? D4REGS \
646 : (REGNO) == REG_R5 ? D5REGS \
647 : (REGNO) == REG_R6 ? D6REGS \
648 : (REGNO) == REG_R7 ? D7REGS \
649 : (REGNO) == REG_P0 ? P0REGS \
650 : (REGNO) < REG_I0 ? PREGS \
651 : (REGNO) == REG_ARGP ? PREGS \
652 : (REGNO) >= REG_I0 && (REGNO) <= REG_I3 ? IREGS \
653 : (REGNO) >= REG_L0 && (REGNO) <= REG_L3 ? LREGS \
654 : (REGNO) >= REG_B0 && (REGNO) <= REG_B3 ? BREGS \
655 : (REGNO) >= REG_M0 && (REGNO) <= REG_M3 ? MREGS \
656 : (REGNO) == REG_A0 || (REGNO) == REG_A1 ? AREGS \
657 : (REGNO) == REG_LT0 || (REGNO) == REG_LT1 ? LT_REGS \
658 : (REGNO) == REG_LC0 || (REGNO) == REG_LC1 ? LC_REGS \
659 : (REGNO) == REG_LB0 || (REGNO) == REG_LB1 ? LB_REGS \
660 : (REGNO) == REG_CC ? CCREGS \
661 : (REGNO) >= REG_RETS ? PROLOGUE_REGS \
664 /* When this hook returns true for MODE, the compiler allows
665 registers explicitly used in the rtl to be used as spill registers
666 but prevents the compiler from extending the lifetime of these
668 #define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
670 /* Do not allow to store a value in REG_CC for any mode */
671 /* Do not allow to store value in pregs if mode is not SI*/
672 #define HARD_REGNO_MODE_OK(REGNO, MODE) hard_regno_mode_ok((REGNO), (MODE))
674 /* Return the maximum number of consecutive registers
675 needed to represent mode MODE in a register of class CLASS. */
676 #define CLASS_MAX_NREGS(CLASS, MODE) \
677 ((MODE) == V2PDImode && (CLASS) == AREGS ? 2 \
678 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
680 #define HARD_REGNO_NREGS(REGNO, MODE) \
681 ((MODE) == PDImode && ((REGNO) == REG_A0 || (REGNO) == REG_A1) ? 1 \
682 : (MODE) == V2PDImode && ((REGNO) == REG_A0 || (REGNO) == REG_A1) ? 2 \
683 : CLASS_MAX_NREGS (GENERAL_REGS, MODE))
685 /* A C expression that is nonzero if hard register TO can be
686 considered for use as a rename register for FROM register */
687 #define HARD_REGNO_RENAME_OK(FROM, TO) bfin_hard_regno_rename_ok (FROM, TO)
689 /* A C expression that is nonzero if it is desirable to choose
690 register allocation so as to avoid move instructions between a
691 value of mode MODE1 and a value of mode MODE2.
693 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R,
694 MODE2)' are ever different for any R, then `MODES_TIEABLE_P (MODE1,
695 MODE2)' must be zero. */
696 #define MODES_TIEABLE_P(MODE1, MODE2) \
697 ((MODE1) == (MODE2) \
698 || ((GET_MODE_CLASS (MODE1) == MODE_INT \
699 || GET_MODE_CLASS (MODE1) == MODE_FLOAT) \
700 && (GET_MODE_CLASS (MODE2) == MODE_INT \
701 || GET_MODE_CLASS (MODE2) == MODE_FLOAT) \
702 && (MODE1) != BImode && (MODE2) != BImode \
703 && GET_MODE_SIZE (MODE1) <= UNITS_PER_WORD \
704 && GET_MODE_SIZE (MODE2) <= UNITS_PER_WORD))
706 /* `PREFERRED_RELOAD_CLASS (X, CLASS)'
707 A C expression that places additional restrictions on the register
708 class to use when it is necessary to copy value X into a register
709 in class CLASS. The value is a register class; perhaps CLASS, or
710 perhaps another, smaller class. */
711 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
712 (GET_CODE (X) == POST_INC \
713 || GET_CODE (X) == POST_DEC \
714 || GET_CODE (X) == PRE_DEC ? PREGS : (CLASS))
716 /* Function Calling Conventions. */
718 /* The type of the current function; normal functions are of type
721 SUBROUTINE, INTERRUPT_HANDLER, EXCPT_HANDLER, NMI_HANDLER
723 #define FUNCTION_RETURN_REGISTERS { REG_RETS, REG_RETI, REG_RETX, REG_RETN }
725 #define FUNCTION_ARG_REGISTERS { REG_R0, REG_R1, REG_R2, -1 }
727 /* Flags for the call/call_value rtl operations set up by function_arg */
728 #define CALL_NORMAL 0x00000000 /* no special processing */
729 #define CALL_LONG 0x00000001 /* always call indirect */
730 #define CALL_SHORT 0x00000002 /* always call by symbol */
733 int words; /* # words passed so far */
734 int nregs; /* # registers available for passing */
735 int *arg_regs; /* array of register -1 terminated */
736 int call_cookie; /* Do special things for this call */
739 #define FUNCTION_ARG_REGNO_P(REGNO) function_arg_regno_p (REGNO)
742 /* Initialize a variable CUM of type CUMULATIVE_ARGS
743 for a call to a function whose data type is FNTYPE.
744 For a library call, FNTYPE is 0. */
745 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT, N_NAMED_ARGS) \
746 (init_cumulative_args (&CUM, FNTYPE, LIBNAME))
748 /* Define how to find the value returned by a function.
749 VALTYPE is the data type of the value (as a tree).
750 If the precise function being called is known, FUNC is its FUNCTION_DECL;
751 otherwise, FUNC is 0.
754 #define VALUE_REGNO(MODE) (REG_R0)
756 #define FUNCTION_VALUE(VALTYPE, FUNC) \
757 gen_rtx_REG (TYPE_MODE (VALTYPE), \
758 VALUE_REGNO(TYPE_MODE(VALTYPE)))
760 /* Define how to find the value returned by a library function
761 assuming the value has mode MODE. */
763 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, VALUE_REGNO(MODE))
765 #define FUNCTION_VALUE_REGNO_P(N) ((N) == REG_R0)
767 #define DEFAULT_PCC_STRUCT_RETURN 0
769 /* Before the prologue, the return address is in the RETS register. */
770 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, REG_RETS)
772 #define RETURN_ADDR_RTX(COUNT, FRAME) bfin_return_addr_rtx (COUNT)
774 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (REG_RETS)
776 /* Call instructions don't modify the stack pointer on the Blackfin. */
777 #define INCOMING_FRAME_SP_OFFSET 0
779 /* Describe how we implement __builtin_eh_return. */
780 #define EH_RETURN_DATA_REGNO(N) ((N) < 2 ? (N) : INVALID_REGNUM)
781 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, REG_P2)
782 #define EH_RETURN_HANDLER_RTX \
783 gen_frame_mem (Pmode, plus_constant (frame_pointer_rtx, UNITS_PER_WORD))
785 /* Addressing Modes */
787 /* Nonzero if the constant value X is a legitimate general operand.
788 symbol_ref are not legitimate and will be put into constant pool.
789 See force_const_mem().
790 If -mno-pool, all constants are legitimate.
792 #define LEGITIMATE_CONSTANT_P(X) bfin_legitimate_constant_p (X)
794 /* A number, the maximum number of registers that can appear in a
795 valid memory address. Note that it is up to you to specify a
796 value equal to the maximum number that `TARGET_LEGITIMATE_ADDRESS_P'
797 would ever accept. */
798 #define MAX_REGS_PER_ADDRESS 1
800 #define LEGITIMATE_MODE_FOR_AUTOINC_P(MODE) \
801 (GET_MODE_SIZE (MODE) <= 4 || (MODE) == PDImode)
803 #define HAVE_POST_INCREMENT 1
804 #define HAVE_POST_DECREMENT 1
805 #define HAVE_PRE_DECREMENT 1
807 /* `LEGITIMATE_PIC_OPERAND_P (X)'
808 A C expression that is nonzero if X is a legitimate immediate
809 operand on the target machine when generating position independent
810 code. You can assume that X satisfies `CONSTANT_P', so you need
811 not check this. You can also assume FLAG_PIC is true, so you need
812 not check it either. You need not define this macro if all
813 constants (including `SYMBOL_REF') can be immediate operands when
814 generating position independent code. */
815 #define LEGITIMATE_PIC_OPERAND_P(X) ! SYMBOLIC_CONST (X)
817 #define SYMBOLIC_CONST(X) \
818 (GET_CODE (X) == SYMBOL_REF \
819 || GET_CODE (X) == LABEL_REF \
820 || (GET_CODE (X) == CONST && symbolic_reference_mentioned_p (X)))
822 #define NOTICE_UPDATE_CC(EXPR, INSN) 0
824 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
825 is done just by pretending it is already truncated. */
826 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
828 /* Max number of bytes we can move from memory to memory
829 in one reasonably fast instruction. */
830 #define MOVE_MAX UNITS_PER_WORD
832 /* If a memory-to-memory move would take MOVE_RATIO or more simple
833 move-instruction pairs, we will do a movmem or libcall instead. */
835 #define MOVE_RATIO(speed) 5
837 /* STORAGE LAYOUT: target machine storage layout
838 Define this macro as a C expression which is nonzero if accessing
839 less than a word of memory (i.e. a `char' or a `short') is no
840 faster than accessing a word of memory, i.e., if such access
841 require more than one instruction or if there is no difference in
842 cost between byte and (aligned) word loads.
844 When this macro is not defined, the compiler will access a field by
845 finding the smallest containing object; when it is defined, a
846 fullword load will be used if alignment permits. Unless bytes
847 accesses are faster than word accesses, using word accesses is
848 preferable since it may eliminate subsequent memory access if
849 subsequent accesses occur to other fields in the same word of the
850 structure, but to different bytes. */
851 #define SLOW_BYTE_ACCESS 0
852 #define SLOW_SHORT_ACCESS 0
854 /* Define this if most significant bit is lowest numbered
855 in instructions that operate on numbered bit-fields. */
856 #define BITS_BIG_ENDIAN 0
858 /* Define this if most significant byte of a word is the lowest numbered.
859 We can't access bytes but if we could we would in the Big Endian order. */
860 #define BYTES_BIG_ENDIAN 0
862 /* Define this if most significant word of a multiword number is numbered. */
863 #define WORDS_BIG_ENDIAN 0
865 /* number of bits in an addressable storage unit */
866 #define BITS_PER_UNIT 8
868 /* Width in bits of a "word", which is the contents of a machine register.
869 Note that this is not necessarily the width of data type `int';
870 if using 16-bit ints on a 68000, this would still be 32.
871 But on a machine with 16-bit registers, this would be 16. */
872 #define BITS_PER_WORD 32
874 /* Width of a word, in units (bytes). */
875 #define UNITS_PER_WORD 4
877 /* Width in bits of a pointer.
878 See also the macro `Pmode1' defined below. */
879 #define POINTER_SIZE 32
881 /* Allocation boundary (in *bits*) for storing pointers in memory. */
882 #define POINTER_BOUNDARY 32
884 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
885 #define PARM_BOUNDARY 32
887 /* Boundary (in *bits*) on which stack pointer should be aligned. */
888 #define STACK_BOUNDARY 32
890 /* Allocation boundary (in *bits*) for the code of a function. */
891 #define FUNCTION_BOUNDARY 32
893 /* Alignment of field after `int : 0' in a structure. */
894 #define EMPTY_FIELD_BOUNDARY BITS_PER_WORD
896 /* No data type wants to be aligned rounder than this. */
897 #define BIGGEST_ALIGNMENT 32
899 /* Define this if move instructions will actually fail to work
900 when given unaligned data. */
901 #define STRICT_ALIGNMENT 1
903 /* (shell-command "rm c-decl.o stor-layout.o")
904 * never define PCC_BITFIELD_TYPE_MATTERS
905 * really cause some alignment problem
908 #define UNITS_PER_FLOAT ((FLOAT_TYPE_SIZE + BITS_PER_UNIT - 1) / \
911 #define UNITS_PER_DOUBLE ((DOUBLE_TYPE_SIZE + BITS_PER_UNIT - 1) / \
915 /* what is the 'type' of size_t */
916 #define SIZE_TYPE "long unsigned int"
918 /* Define this as 1 if `char' should by default be signed; else as 0. */
919 #define DEFAULT_SIGNED_CHAR 1
920 #define FLOAT_TYPE_SIZE BITS_PER_WORD
921 #define SHORT_TYPE_SIZE 16
922 #define CHAR_TYPE_SIZE 8
923 #define INT_TYPE_SIZE 32
924 #define LONG_TYPE_SIZE 32
925 #define LONG_LONG_TYPE_SIZE 64
927 /* Note: Fix this to depend on target switch. -- lev */
929 /* Note: Try to implement double and force long double. -- tonyko
930 * #define __DOUBLES_ARE_FLOATS__
931 * #define DOUBLE_TYPE_SIZE FLOAT_TYPE_SIZE
932 * #define LONG_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE
933 * #define DOUBLES_ARE_FLOATS 1
936 #define DOUBLE_TYPE_SIZE 64
937 #define LONG_DOUBLE_TYPE_SIZE 64
939 /* `PROMOTE_MODE (M, UNSIGNEDP, TYPE)'
940 A macro to update M and UNSIGNEDP when an object whose type is
941 TYPE and which has the specified mode and signedness is to be
942 stored in a register. This macro is only called when TYPE is a
945 On most RISC machines, which only have operations that operate on
946 a full register, define this macro to set M to `word_mode' if M is
947 an integer mode narrower than `BITS_PER_WORD'. In most cases,
948 only integer modes should be widened because wider-precision
949 floating-point operations are usually more expensive than their
950 narrower counterparts.
952 For most machines, the macro definition does not change UNSIGNEDP.
953 However, some machines, have instructions that preferentially
954 handle either signed or unsigned quantities of certain modes. For
955 example, on the DEC Alpha, 32-bit loads from memory and 32-bit add
956 instructions sign-extend the result to 64 bits. On such machines,
957 set UNSIGNEDP according to which kind of extension is more
960 Do not define this macro if it would never modify M.*/
962 #define BFIN_PROMOTE_MODE_P(MODE) \
963 (!TARGET_DSP && GET_MODE_CLASS (MODE) == MODE_INT \
964 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD)
966 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
967 if (BFIN_PROMOTE_MODE_P(MODE)) \
969 if (MODE == QImode) \
971 else if (MODE == HImode) \
976 /* Describing Relative Costs of Operations */
978 /* Do not put function addr into constant pool */
979 #define NO_FUNCTION_CSE 1
981 /* A C expression for the cost of moving data from a register in class FROM to
982 one in class TO. The classes are expressed using the enumeration values
983 such as `GENERAL_REGS'. A value of 2 is the default; other values are
984 interpreted relative to that.
986 It is not required that the cost always equal 2 when FROM is the same as TO;
987 on some machines it is expensive to move between registers if they are not
988 general registers. */
990 #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \
991 bfin_register_move_cost ((MODE), (CLASS1), (CLASS2))
993 /* A C expression for the cost of moving data of mode M between a
994 register and memory. A value of 2 is the default; this cost is
995 relative to those in `REGISTER_MOVE_COST'.
997 If moving between registers and memory is more expensive than
998 between two registers, you should define this macro to express the
1001 #define MEMORY_MOVE_COST(MODE, CLASS, IN) \
1002 bfin_memory_move_cost ((MODE), (CLASS), (IN))
1004 /* Specify the machine mode that this machine uses
1005 for the index in the tablejump instruction. */
1006 #define CASE_VECTOR_MODE SImode
1008 #define JUMP_TABLES_IN_TEXT_SECTION flag_pic
1010 /* Define if operations between registers always perform the operation
1011 on the full register even if a narrower mode is specified.
1012 #define WORD_REGISTER_OPERATIONS
1015 /* Evaluates to true if A and B are mac flags that can be used
1016 together in a single multiply insn. That is the case if they are
1017 both the same flag not involving M, or if one is a combination of
1018 the other with M. */
1019 #define MACFLAGS_MATCH_P(A, B) \
1021 || ((A) == MACFLAG_NONE && (B) == MACFLAG_M) \
1022 || ((A) == MACFLAG_M && (B) == MACFLAG_NONE) \
1023 || ((A) == MACFLAG_IS && (B) == MACFLAG_IS_M) \
1024 || ((A) == MACFLAG_IS_M && (B) == MACFLAG_IS))
1026 /* Switch into a generic section. */
1027 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
1029 #define PRINT_OPERAND(FILE, RTX, CODE) print_operand (FILE, RTX, CODE)
1030 #define PRINT_OPERAND_ADDRESS(FILE, RTX) print_address_operand (FILE, RTX)
1032 typedef enum sections {
1038 typedef enum directives {
1047 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) \
1049 || ((C) == '|' && (STR)[1] == '|'))
1051 #define TEXT_SECTION_ASM_OP ".text;"
1052 #define DATA_SECTION_ASM_OP ".data;"
1054 #define ASM_APP_ON ""
1055 #define ASM_APP_OFF ""
1057 #define ASM_GLOBALIZE_LABEL1(FILE, NAME) \
1058 do { fputs (".global ", FILE); \
1059 assemble_name (FILE, NAME); \
1061 fputc ('\n',FILE); \
1064 #define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL) \
1066 fputs (".type ", FILE); \
1067 assemble_name (FILE, NAME); \
1068 fputs (", STT_FUNC", FILE); \
1070 fputc ('\n',FILE); \
1071 ASM_OUTPUT_LABEL(FILE, NAME); \
1074 #define ASM_OUTPUT_LABEL(FILE, NAME) \
1075 do { assemble_name (FILE, NAME); \
1076 fputs (":\n",FILE); \
1079 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
1080 do { fprintf (FILE, "_%s", NAME); \
1083 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1084 do { char __buf[256]; \
1085 fprintf (FILE, "\t.dd\t"); \
1086 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", VALUE); \
1087 assemble_name (FILE, __buf); \
1088 fputc (';', FILE); \
1089 fputc ('\n', FILE); \
1092 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1093 MY_ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)
1095 #define MY_ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1098 fprintf (FILE, "\t.dd\t"); \
1099 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", VALUE); \
1100 assemble_name (FILE, __buf); \
1101 fputs (" - ", FILE); \
1102 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", REL); \
1103 assemble_name (FILE, __buf); \
1104 fputc (';', FILE); \
1105 fputc ('\n', FILE); \
1108 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1111 fprintf (FILE, "\t.align %d\n", 1 << (LOG)); \
1114 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1116 asm_output_skip (FILE, SIZE); \
1119 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1121 switch_to_section (data_section); \
1122 if ((SIZE) >= (unsigned int) 4 ) ASM_OUTPUT_ALIGN(FILE,2); \
1123 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
1124 ASM_OUTPUT_LABEL (FILE, NAME); \
1125 fprintf (FILE, "%s %ld;\n", ASM_SPACE, \
1126 (ROUNDED) > (unsigned int) 1 ? (ROUNDED) : 1); \
1129 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1131 ASM_GLOBALIZE_LABEL1(FILE,NAME); \
1132 ASM_OUTPUT_LOCAL (FILE, NAME, SIZE, ROUNDED); } while(0)
1134 #define ASM_COMMENT_START "//"
1136 #define FUNCTION_PROFILER(FILE, LABELNO) \
1138 fprintf (FILE, "\tCALL __mcount;\n"); \
1141 #undef NO_PROFILE_COUNTERS
1142 #define NO_PROFILE_COUNTERS 1
1144 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) fprintf (FILE, "[SP--] = %s;\n", reg_names[REGNO])
1145 #define ASM_OUTPUT_REG_POP(FILE, REGNO) fprintf (FILE, "%s = [SP++];\n", reg_names[REGNO])
1147 extern struct rtx_def *bfin_cc_rtx, *bfin_rets_rtx;
1149 /* This works for GAS and some other assemblers. */
1150 #define SET_ASM_OP ".set "
1152 /* DBX register number for a given compiler register number */
1153 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1155 #define SIZE_ASM_OP "\t.size\t"
1157 extern int splitting_for_sched, splitting_loops;
1159 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) ((CHAR) == '!')
1161 #ifndef TARGET_SUPPORTS_SYNC_CALLS
1162 #define TARGET_SUPPORTS_SYNC_CALLS 0
1165 #endif /* _BFIN_CONFIG */