1 /* Definitions for the Blackfin port.
2 Copyright (C) 2005-2024 Free Software Foundation, Inc.
3 Contributed by Analog Devices.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
25 #include "config/bfin/bfin-opts.h"
28 #define OBJECT_FORMAT_ELF
33 /* Predefinition in the preprocessor for this target machine */
34 #ifndef TARGET_CPU_CPP_BUILTINS
35 #define TARGET_CPU_CPP_BUILTINS() \
38 builtin_define_std ("bfin"); \
39 builtin_define_std ("BFIN"); \
40 builtin_define ("__ADSPBLACKFIN__"); \
41 builtin_define ("__ADSPLPBLACKFIN__"); \
43 switch (bfin_cpu_type) \
45 case BFIN_CPU_UNKNOWN: \
47 case BFIN_CPU_BF512: \
48 builtin_define ("__ADSPBF512__"); \
49 builtin_define ("__ADSPBF51x__"); \
51 case BFIN_CPU_BF514: \
52 builtin_define ("__ADSPBF514__"); \
53 builtin_define ("__ADSPBF51x__"); \
55 case BFIN_CPU_BF516: \
56 builtin_define ("__ADSPBF516__"); \
57 builtin_define ("__ADSPBF51x__"); \
59 case BFIN_CPU_BF518: \
60 builtin_define ("__ADSPBF518__"); \
61 builtin_define ("__ADSPBF51x__"); \
63 case BFIN_CPU_BF522: \
64 builtin_define ("__ADSPBF522__"); \
65 builtin_define ("__ADSPBF52x__"); \
67 case BFIN_CPU_BF523: \
68 builtin_define ("__ADSPBF523__"); \
69 builtin_define ("__ADSPBF52x__"); \
71 case BFIN_CPU_BF524: \
72 builtin_define ("__ADSPBF524__"); \
73 builtin_define ("__ADSPBF52x__"); \
75 case BFIN_CPU_BF525: \
76 builtin_define ("__ADSPBF525__"); \
77 builtin_define ("__ADSPBF52x__"); \
79 case BFIN_CPU_BF526: \
80 builtin_define ("__ADSPBF526__"); \
81 builtin_define ("__ADSPBF52x__"); \
83 case BFIN_CPU_BF527: \
84 builtin_define ("__ADSPBF527__"); \
85 builtin_define ("__ADSPBF52x__"); \
87 case BFIN_CPU_BF531: \
88 builtin_define ("__ADSPBF531__"); \
90 case BFIN_CPU_BF532: \
91 builtin_define ("__ADSPBF532__"); \
93 case BFIN_CPU_BF533: \
94 builtin_define ("__ADSPBF533__"); \
96 case BFIN_CPU_BF534: \
97 builtin_define ("__ADSPBF534__"); \
99 case BFIN_CPU_BF536: \
100 builtin_define ("__ADSPBF536__"); \
102 case BFIN_CPU_BF537: \
103 builtin_define ("__ADSPBF537__"); \
105 case BFIN_CPU_BF538: \
106 builtin_define ("__ADSPBF538__"); \
108 case BFIN_CPU_BF539: \
109 builtin_define ("__ADSPBF539__"); \
111 case BFIN_CPU_BF542M: \
112 builtin_define ("__ADSPBF542M__"); \
114 case BFIN_CPU_BF542: \
115 builtin_define ("__ADSPBF542__"); \
116 builtin_define ("__ADSPBF54x__"); \
118 case BFIN_CPU_BF544M: \
119 builtin_define ("__ADSPBF544M__"); \
121 case BFIN_CPU_BF544: \
122 builtin_define ("__ADSPBF544__"); \
123 builtin_define ("__ADSPBF54x__"); \
125 case BFIN_CPU_BF547M: \
126 builtin_define ("__ADSPBF547M__"); \
128 case BFIN_CPU_BF547: \
129 builtin_define ("__ADSPBF547__"); \
130 builtin_define ("__ADSPBF54x__"); \
132 case BFIN_CPU_BF548M: \
133 builtin_define ("__ADSPBF548M__"); \
135 case BFIN_CPU_BF548: \
136 builtin_define ("__ADSPBF548__"); \
137 builtin_define ("__ADSPBF54x__"); \
139 case BFIN_CPU_BF549M: \
140 builtin_define ("__ADSPBF549M__"); \
142 case BFIN_CPU_BF549: \
143 builtin_define ("__ADSPBF549__"); \
144 builtin_define ("__ADSPBF54x__"); \
146 case BFIN_CPU_BF561: \
147 builtin_define ("__ADSPBF561__"); \
149 case BFIN_CPU_BF592: \
150 builtin_define ("__ADSPBF592__"); \
151 builtin_define ("__ADSPBF59x__"); \
155 if (bfin_si_revision != -1) \
157 /* space of 0xnnnn and a NUL */ \
158 char *buf = XALLOCAVEC (char, 7); \
160 sprintf (buf, "0x%04x", bfin_si_revision); \
161 builtin_define_with_value ("__SILICON_REVISION__", buf, 0); \
164 if (bfin_workarounds) \
165 builtin_define ("__WORKAROUNDS_ENABLED"); \
166 if (ENABLE_WA_SPECULATIVE_LOADS) \
167 builtin_define ("__WORKAROUND_SPECULATIVE_LOADS"); \
168 if (ENABLE_WA_SPECULATIVE_SYNCS) \
169 builtin_define ("__WORKAROUND_SPECULATIVE_SYNCS"); \
170 if (ENABLE_WA_INDIRECT_CALLS) \
171 builtin_define ("__WORKAROUND_INDIRECT_CALLS"); \
172 if (ENABLE_WA_RETS) \
173 builtin_define ("__WORKAROUND_RETS"); \
177 builtin_define ("__BFIN_FDPIC__"); \
178 builtin_define ("__FDPIC__"); \
180 if (TARGET_ID_SHARED_LIBRARY \
181 && !TARGET_SEP_DATA) \
182 builtin_define ("__ID_SHARED_LIB__"); \
183 if (flag_no_builtin) \
184 builtin_define ("__NO_BUILTIN"); \
185 if (TARGET_MULTICORE) \
186 builtin_define ("__BFIN_MULTICORE"); \
188 builtin_define ("__BFIN_COREA"); \
190 builtin_define ("__BFIN_COREB"); \
192 builtin_define ("__BFIN_SDRAM"); \
197 #define DRIVER_SELF_SPECS SUBTARGET_DRIVER_SELF_SPECS "\
198 %{mleaf-id-shared-library:%{!mid-shared-library:-mid-shared-library}} \
199 %{mfdpic:%{!fpic:%{!fpie:%{!fPIC:%{!fPIE:\
200 %{!fno-pic:%{!fno-pie:%{!fno-PIC:%{!fno-PIE:-fpie}}}}}}}}} \
202 #ifndef SUBTARGET_DRIVER_SELF_SPECS
203 # define SUBTARGET_DRIVER_SELF_SPECS
206 #define LINK_GCC_C_SEQUENCE_SPEC "\
207 %{mfast-fp:-lbffastfp} %G %{!nolibc:%L} %{mfast-fp:-lbffastfp} %G \
212 %{mno-fdpic:-mnopic} %{mfdpic}"
216 %{mfdpic:-melf32bfinfd -z text} \
217 %{static:-dn -Bstatic} \
218 %{shared:-G -Bdynamic} \
219 %{symbolic:-Bsymbolic} \
220 -init __init -fini __fini "
222 /* Generate DSP instructions, like DSP halfword loads */
223 #define TARGET_DSP (1)
225 #define TARGET_DEFAULT 0
227 /* Maximum number of library ids we permit */
228 #define MAX_LIBRARY_ID 255
230 extern const char *bfin_library_id_string
;
232 #define FUNCTION_MODE SImode
235 /* store-condition-codes instructions store 0 for false
236 This is the value stored for true. */
237 #define STORE_FLAG_VALUE 1
239 /* Define this if pushing a word on the stack
240 makes the stack pointer a smaller address. */
241 #define STACK_GROWS_DOWNWARD 1
243 #define STACK_PUSH_CODE PRE_DEC
245 /* Define this to nonzero if the nominal address of the stack frame
246 is at the high-address end of the local variables;
247 that is, each additional local variable allocated
248 goes at a more negative offset in the frame. */
249 #define FRAME_GROWS_DOWNWARD 1
251 /* We define a dummy ARGP register; the parameters start at offset 0 from
253 #define FIRST_PARM_OFFSET(DECL) 0
255 /* Register to use for pushing function arguments. */
256 #define STACK_POINTER_REGNUM REG_P6
258 /* Base register for access to local variables of the function. */
259 #define FRAME_POINTER_REGNUM REG_P7
261 /* A dummy register that will be eliminated to either FP or SP. */
262 #define ARG_POINTER_REGNUM REG_ARGP
264 /* `PIC_OFFSET_TABLE_REGNUM'
265 The register number of the register used to address a table of
266 static data addresses in memory. In some cases this register is
267 defined by a processor's "application binary interface" (ABI).
268 When this macro is defined, RTL is generated for this register
269 once, as with the stack pointer and frame pointer registers. If
270 this macro is not defined, it is up to the machine-dependent files
271 to allocate such a register (if necessary). */
272 #define PIC_OFFSET_TABLE_REGNUM (REG_P5)
274 #define FDPIC_FPTR_REGNO REG_P1
275 #define FDPIC_REGNO REG_P3
276 #define OUR_FDPIC_REG get_hard_reg_initial_val (SImode, FDPIC_REGNO)
278 /* A static chain register for nested functions. We need to use a
279 call-clobbered register for this. */
280 #define STATIC_CHAIN_REGNUM REG_P2
282 /* Define this if functions should assume that stack space has been
283 allocated for arguments even when their values are passed in
286 The value of this macro is the size, in bytes, of the area reserved for
287 arguments passed in registers.
289 This space can either be allocated by the caller or be a part of the
290 machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE'
292 #define FIXED_STACK_AREA 12
293 #define REG_PARM_STACK_SPACE(FNDECL) FIXED_STACK_AREA
295 /* Define this if the above stack space is to be considered part of the
296 * space allocated by the caller. */
297 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1
299 /* Define this if the maximum size of all the outgoing args is to be
300 accumulated and pushed during the prologue. The amount can be
301 found in the variable crtl->outgoing_args_size. */
302 #define ACCUMULATE_OUTGOING_ARGS 1
304 /*#define DATA_ALIGNMENT(TYPE, BASIC-ALIGN) for arrays.. */
306 /* If defined, a C expression to compute the alignment for a local
307 variable. TYPE is the data type, and ALIGN is the alignment that
308 the object would ordinarily have. The value of this macro is used
309 instead of that alignment to align the object.
311 If this macro is not defined, then ALIGN is used.
313 One use of this macro is to increase alignment of medium-size
314 data to make it all fit in fewer cache lines. */
316 #define LOCAL_ALIGNMENT(TYPE, ALIGN) bfin_local_alignment ((TYPE), (ALIGN))
318 #define TRAMPOLINE_SIZE (TARGET_FDPIC ? 30 : 18)
320 /* Definitions for register eliminations.
322 This is an array of structures. Each structure initializes one pair
323 of eliminable registers. The "from" register number is given first,
324 followed by "to". Eliminations of the same "from" register are listed
325 in order of preference.
327 There are two registers that can always be eliminated on the i386.
328 The frame pointer and the arg pointer can be replaced by either the
329 hard frame pointer or to the stack pointer, depending upon the
330 circumstances. The hard frame pointer is not used before reload and
331 so it is not eligible for elimination. */
333 #define ELIMINABLE_REGS \
334 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
335 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
336 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} \
338 /* Define the offset between two registers, one to be eliminated, and the other
339 its replacement, at the start of a routine. */
341 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
342 ((OFFSET) = bfin_initial_elimination_offset ((FROM), (TO)))
344 /* This processor has
345 8 data register for doing arithmetic
346 8 pointer register for doing addressing, including
349 4 sets of indexing registers (I0-3, B0-3, L0-3, M0-3)
350 1 condition code flag register CC
351 5 return address registers RETS/I/X/N/E
352 1 arithmetic status register (ASTAT). */
354 #define FIRST_PSEUDO_REGISTER 50
356 #define D_REGNO_P(X) ((X) <= REG_R7)
357 #define P_REGNO_P(X) ((X) >= REG_P0 && (X) <= REG_P7)
358 #define I_REGNO_P(X) ((X) >= REG_I0 && (X) <= REG_I3)
359 #define DP_REGNO_P(X) (D_REGNO_P (X) || P_REGNO_P (X))
360 #define ADDRESS_REGNO_P(X) ((X) >= REG_P0 && (X) <= REG_M3)
361 #define DREG_P(X) (REG_P (X) && D_REGNO_P (REGNO (X)))
362 #define PREG_P(X) (REG_P (X) && P_REGNO_P (REGNO (X)))
363 #define IREG_P(X) (REG_P (X) && I_REGNO_P (REGNO (X)))
364 #define DPREG_P(X) (REG_P (X) && DP_REGNO_P (REGNO (X)))
366 #define REGISTER_NAMES { \
367 "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", \
368 "P0", "P1", "P2", "P3", "P4", "P5", "SP", "FP", \
369 "I0", "I1", "I2", "I3", "B0", "B1", "B2", "B3", \
370 "L0", "L1", "L2", "L3", "M0", "M1", "M2", "M3", \
373 "RETS", "RETI", "RETX", "RETN", "RETE", "ASTAT", "SEQSTAT", "USP", \
375 "LT0", "LT1", "LC0", "LC1", "LB0", "LB1" \
378 #define SHORT_REGISTER_NAMES { \
379 "R0.L", "R1.L", "R2.L", "R3.L", "R4.L", "R5.L", "R6.L", "R7.L", \
380 "P0.L", "P1.L", "P2.L", "P3.L", "P4.L", "P5.L", "SP.L", "FP.L", \
381 "I0.L", "I1.L", "I2.L", "I3.L", "B0.L", "B1.L", "B2.L", "B3.L", \
382 "L0.L", "L1.L", "L2.L", "L3.L", "M0.L", "M1.L", "M2.L", "M3.L", }
384 #define HIGH_REGISTER_NAMES { \
385 "R0.H", "R1.H", "R2.H", "R3.H", "R4.H", "R5.H", "R6.H", "R7.H", \
386 "P0.H", "P1.H", "P2.H", "P3.H", "P4.H", "P5.H", "SP.H", "FP.H", \
387 "I0.H", "I1.H", "I2.H", "I3.H", "B0.H", "B1.H", "B2.H", "B3.H", \
388 "L0.H", "L1.H", "L2.H", "L3.H", "M0.H", "M1.H", "M2.H", "M3.H", }
390 #define DREGS_PAIR_NAMES { \
391 "R1:0.p", 0, "R3:2.p", 0, "R5:4.p", 0, "R7:6.p", 0, }
393 #define BYTE_REGISTER_NAMES { \
394 "R0.B", "R1.B", "R2.B", "R3.B", "R4.B", "R5.B", "R6.B", "R7.B", }
397 /* 1 for registers that have pervasive standard uses
398 and are not available for the register allocator. */
400 #define FIXED_REGISTERS \
401 /*r0 r1 r2 r3 r4 r5 r6 r7 p0 p1 p2 p3 p4 p5 p6 p7 */ \
402 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, \
403 /*i0 i1 i2 i3 b0 b1 b2 b3 l0 l1 l2 l3 m0 m1 m2 m3 */ \
404 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, \
405 /*a0 a1 cc rets/i/x/n/e astat seqstat usp argp lt0/1 lc0/1 */ \
406 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
411 /* 1 for registers not available across function calls.
412 These must include the FIXED_REGISTERS and also any
413 registers that can be used without being saved.
414 The latter must include the registers where values are returned
415 and the register where structure-value addresses are passed.
416 Aside from that, you can include as many other registers as you like. */
418 #define CALL_USED_REGISTERS \
419 /*r0 r1 r2 r3 r4 r5 r6 r7 p0 p1 p2 p3 p4 p5 p6 p7 */ \
420 { 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, \
421 /*i0 i1 i2 i3 b0 b1 b2 b3 l0 l1 l2 l3 m0 m1 m2 m3 */ \
422 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
423 /*a0 a1 cc rets/i/x/n/e astat seqstat usp argp lt0/1 lc0/1 */ \
424 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
429 /* Order in which to allocate registers. Each register must be
430 listed once, even those in FIXED_REGISTERS. List frame pointer
431 late and fixed registers last. Note that, in general, we prefer
432 registers listed in CALL_USED_REGISTERS, keeping the others
433 available for storage of persistent values. */
435 #define REG_ALLOC_ORDER \
436 { REG_R0, REG_R1, REG_R2, REG_R3, REG_R7, REG_R6, REG_R5, REG_R4, \
437 REG_P2, REG_P1, REG_P0, REG_P5, REG_P4, REG_P3, REG_P6, REG_P7, \
439 REG_I0, REG_I1, REG_I2, REG_I3, REG_B0, REG_B1, REG_B2, REG_B3, \
440 REG_L0, REG_L1, REG_L2, REG_L3, REG_M0, REG_M1, REG_M2, REG_M3, \
441 REG_RETS, REG_RETI, REG_RETX, REG_RETN, REG_RETE, \
442 REG_ASTAT, REG_SEQSTAT, REG_USP, \
444 REG_LT0, REG_LT1, REG_LC0, REG_LC1, REG_LB0, REG_LB1 \
447 /* Define the classes of registers for register constraints in the
448 machine description. Also define ranges of constants.
450 One of the classes must always be named ALL_REGS and include all hard regs.
451 If there is more than one class, another class must be named NO_REGS
452 and contain no registers.
454 The name GENERAL_REGS must be the name of a class (or an alias for
455 another name such as ALL_REGS). This is the class of registers
456 that is allowed by "g" or "r" in a register constraint.
457 Also, registers outside this class are allocated only when
458 instructions express preferences for them.
460 The classes must be numbered in nondecreasing order; that is,
461 a larger-numbered class must never be contained completely
462 in a smaller-numbered class.
464 For any two classes, it is very desirable that there be another
465 class that represents their union. */
475 CIRCREGS
, /* Circular buffering registers, Ix, Bx, Lx together form. See Automatic Circular Buffering. */
505 ALL_REGS
, LIM_REG_CLASSES
508 #define N_REG_CLASSES ((int)LIM_REG_CLASSES)
510 #define GENERAL_REGS DPREGS
512 /* Give names of register classes as strings for dump file. */
514 #define REG_CLASS_NAMES \
552 /* An initializer containing the contents of the register classes, as integers
553 which are bit masks. The Nth integer specifies the contents of class N.
554 The way the integer MASK is interpreted is that register R is in the class
555 if `MASK & (1 << R)' is 1.
557 When the machine has more than 32 registers, an integer does not suffice.
558 Then the integers are replaced by sub-initializers, braced groupings
559 containing several integers. Each sub-initializer must be suitable as an
560 initializer for the type `HARD_REG_SET' which is defined in
563 /* NOTE: DSP registers, IREGS - AREGS, are not GENERAL_REGS. We use
564 MOST_REGS as the union of DPREGS and DAGREGS. */
566 #define REG_CLASS_CONTENTS \
568 { { 0x00000000, 0 }, /* NO_REGS */ \
569 { 0x000f0000, 0 }, /* IREGS */ \
570 { 0x00f00000, 0 }, /* BREGS */ \
571 { 0x0f000000, 0 }, /* LREGS */ \
572 { 0xf0000000, 0 }, /* MREGS */ \
573 { 0x0fff0000, 0 }, /* CIRCREGS */ \
574 { 0xffff0000, 0 }, /* DAGREGS */ \
575 { 0x00000000, 0x1 }, /* EVEN_AREGS */ \
576 { 0x00000000, 0x2 }, /* ODD_AREGS */ \
577 { 0x00000000, 0x3 }, /* AREGS */ \
578 { 0x00000000, 0x4 }, /* CCREGS */ \
579 { 0x00000055, 0 }, /* EVEN_DREGS */ \
580 { 0x000000aa, 0 }, /* ODD_DREGS */ \
581 { 0x00000001, 0 }, /* D0REGS */ \
582 { 0x00000002, 0 }, /* D1REGS */ \
583 { 0x00000004, 0 }, /* D2REGS */ \
584 { 0x00000008, 0 }, /* D3REGS */ \
585 { 0x00000010, 0 }, /* D4REGS */ \
586 { 0x00000020, 0 }, /* D5REGS */ \
587 { 0x00000040, 0 }, /* D6REGS */ \
588 { 0x00000080, 0 }, /* D7REGS */ \
589 { 0x000000ff, 0 }, /* DREGS */ \
590 { 0x00000100, 0x000 }, /* P0REGS */ \
591 { 0x00000800, 0x000 }, /* FDPIC_REGS */ \
592 { 0x00000200, 0x000 }, /* FDPIC_FPTR_REGS */ \
593 { 0x00004700, 0x800 }, /* PREGS_CLOBBERED */ \
594 { 0x0000ff00, 0x800 }, /* PREGS */ \
595 { 0x000fff00, 0x800 }, /* IPREGS */ \
596 { 0x0000ffff, 0x800 }, /* DPREGS */ \
597 { 0xffffffff, 0x800 }, /* MOST_REGS */\
598 { 0x00000000, 0x3000 }, /* LT_REGS */\
599 { 0x00000000, 0xc000 }, /* LC_REGS */\
600 { 0x00000000, 0x30000 }, /* LB_REGS */\
601 { 0x00000000, 0x3f7f8 }, /* PROLOGUE_REGS */\
602 { 0xffffffff, 0x3fff8 }, /* NON_A_CC_REGS */\
603 { 0xffffffff, 0x3ffff }} /* ALL_REGS */
605 #define IREG_POSSIBLE_P(OUTER) \
606 ((OUTER) == POST_INC || (OUTER) == PRE_INC \
607 || (OUTER) == POST_DEC || (OUTER) == PRE_DEC \
608 || (OUTER) == MEM || (OUTER) == ADDRESS)
610 #define MODE_CODE_BASE_REG_CLASS(MODE, AS, OUTER, INDEX) \
611 ((MODE) == HImode && IREG_POSSIBLE_P (OUTER) ? IPREGS : PREGS)
613 #define INDEX_REG_CLASS PREGS
615 #define REGNO_OK_FOR_BASE_STRICT_P(X, MODE, OUTER, INDEX) \
616 (P_REGNO_P (X) || (X) == REG_ARGP \
617 || (IREG_POSSIBLE_P (OUTER) && (MODE) == HImode \
620 #define REGNO_OK_FOR_BASE_NONSTRICT_P(X, MODE, OUTER, INDEX) \
621 ((X) >= FIRST_PSEUDO_REGISTER \
622 || REGNO_OK_FOR_BASE_STRICT_P (X, MODE, OUTER, INDEX))
625 #define REGNO_MODE_CODE_OK_FOR_BASE_P(X, MODE, AS, OUTER, INDEX) \
626 REGNO_OK_FOR_BASE_STRICT_P (X, MODE, OUTER, INDEX)
628 #define REGNO_MODE_CODE_OK_FOR_BASE_P(X, MODE, AS, OUTER, INDEX) \
629 REGNO_OK_FOR_BASE_NONSTRICT_P (X, MODE, OUTER, INDEX)
632 #define REGNO_OK_FOR_INDEX_P(X) 0
634 /* The same information, inverted:
635 Return the class number of the smallest class containing
636 reg number REGNO. This could be a conditional expression
637 or could index an array. */
639 #define REGNO_REG_CLASS(REGNO) \
640 ((REGNO) == REG_R0 ? D0REGS \
641 : (REGNO) == REG_R1 ? D1REGS \
642 : (REGNO) == REG_R2 ? D2REGS \
643 : (REGNO) == REG_R3 ? D3REGS \
644 : (REGNO) == REG_R4 ? D4REGS \
645 : (REGNO) == REG_R5 ? D5REGS \
646 : (REGNO) == REG_R6 ? D6REGS \
647 : (REGNO) == REG_R7 ? D7REGS \
648 : (REGNO) == REG_P0 ? P0REGS \
649 : (REGNO) < REG_I0 ? PREGS \
650 : (REGNO) == REG_ARGP ? PREGS \
651 : (REGNO) >= REG_I0 && (REGNO) <= REG_I3 ? IREGS \
652 : (REGNO) >= REG_L0 && (REGNO) <= REG_L3 ? LREGS \
653 : (REGNO) >= REG_B0 && (REGNO) <= REG_B3 ? BREGS \
654 : (REGNO) >= REG_M0 && (REGNO) <= REG_M3 ? MREGS \
655 : (REGNO) == REG_A0 || (REGNO) == REG_A1 ? AREGS \
656 : (REGNO) == REG_LT0 || (REGNO) == REG_LT1 ? LT_REGS \
657 : (REGNO) == REG_LC0 || (REGNO) == REG_LC1 ? LC_REGS \
658 : (REGNO) == REG_LB0 || (REGNO) == REG_LB1 ? LB_REGS \
659 : (REGNO) == REG_CC ? CCREGS \
660 : (REGNO) >= REG_RETS ? PROLOGUE_REGS \
663 /* When this hook returns true for MODE, the compiler allows
664 registers explicitly used in the rtl to be used as spill registers
665 but prevents the compiler from extending the lifetime of these
667 #define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
669 /* Return the maximum number of consecutive registers
670 needed to represent mode MODE in a register of class CLASS. */
671 #define CLASS_MAX_NREGS(CLASS, MODE) \
672 ((MODE) == V2PDImode && (CLASS) == AREGS ? 2 \
673 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
675 /* A C expression that is nonzero if hard register TO can be
676 considered for use as a rename register for FROM register */
677 #define HARD_REGNO_RENAME_OK(FROM, TO) bfin_hard_regno_rename_ok (FROM, TO)
679 /* `PREFERRED_RELOAD_CLASS (X, CLASS)'
680 A C expression that places additional restrictions on the register
681 class to use when it is necessary to copy value X into a register
682 in class CLASS. The value is a register class; perhaps CLASS, or
683 perhaps another, smaller class. */
684 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
685 (GET_CODE (X) == POST_INC \
686 || GET_CODE (X) == POST_DEC \
687 || GET_CODE (X) == PRE_DEC ? PREGS : (CLASS))
689 /* Function Calling Conventions. */
691 /* The type of the current function; normal functions are of type
694 SUBROUTINE
, INTERRUPT_HANDLER
, EXCPT_HANDLER
, NMI_HANDLER
696 #define FUNCTION_RETURN_REGISTERS { REG_RETS, REG_RETI, REG_RETX, REG_RETN }
698 #define FUNCTION_ARG_REGISTERS { REG_R0, REG_R1, REG_R2, -1 }
700 /* Flags for the call/call_value rtl operations set up by function_arg */
701 #define CALL_NORMAL 0x00000000 /* no special processing */
702 #define CALL_LONG 0x00000001 /* always call indirect */
703 #define CALL_SHORT 0x00000002 /* always call by symbol */
706 int words
; /* # words passed so far */
707 int nregs
; /* # registers available for passing */
708 int *arg_regs
; /* array of register -1 terminated */
709 int call_cookie
; /* Do special things for this call */
712 #define FUNCTION_ARG_REGNO_P(REGNO) function_arg_regno_p (REGNO)
715 /* Initialize a variable CUM of type CUMULATIVE_ARGS
716 for a call to a function whose data type is FNTYPE.
717 For a library call, FNTYPE is 0. */
718 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT, N_NAMED_ARGS) \
719 (init_cumulative_args (&CUM, FNTYPE, LIBNAME))
721 /* Define how to find the value returned by a function.
722 VALTYPE is the data type of the value (as a tree).
723 If the precise function being called is known, FUNC is its FUNCTION_DECL;
724 otherwise, FUNC is 0.
727 #define VALUE_REGNO(MODE) (REG_R0)
729 #define FUNCTION_VALUE(VALTYPE, FUNC) \
730 gen_rtx_REG (TYPE_MODE (VALTYPE), \
731 VALUE_REGNO(TYPE_MODE(VALTYPE)))
733 /* Define how to find the value returned by a library function
734 assuming the value has mode MODE. */
736 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, VALUE_REGNO(MODE))
738 #define FUNCTION_VALUE_REGNO_P(N) ((N) == REG_R0)
740 #define DEFAULT_PCC_STRUCT_RETURN 0
742 /* Before the prologue, the return address is in the RETS register. */
743 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, REG_RETS)
745 #define RETURN_ADDR_RTX(COUNT, FRAME) bfin_return_addr_rtx (COUNT)
747 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (REG_RETS)
749 /* Call instructions don't modify the stack pointer on the Blackfin. */
750 #define INCOMING_FRAME_SP_OFFSET 0
752 /* Describe how we implement __builtin_eh_return. */
753 #define EH_RETURN_DATA_REGNO(N) ((N) < 2 ? (N) : INVALID_REGNUM)
754 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, REG_P2)
755 #define EH_RETURN_HANDLER_RTX \
756 gen_frame_mem (Pmode, plus_constant (Pmode, frame_pointer_rtx, \
759 /* Addressing Modes */
761 /* A number, the maximum number of registers that can appear in a
762 valid memory address. Note that it is up to you to specify a
763 value equal to the maximum number that `TARGET_LEGITIMATE_ADDRESS_P'
764 would ever accept. */
765 #define MAX_REGS_PER_ADDRESS 1
767 #define LEGITIMATE_MODE_FOR_AUTOINC_P(MODE) \
768 (GET_MODE_SIZE (MODE) <= 4 || (MODE) == PDImode)
770 #define HAVE_POST_INCREMENT 1
771 #define HAVE_POST_DECREMENT 1
772 #define HAVE_PRE_DECREMENT 1
774 /* `LEGITIMATE_PIC_OPERAND_P (X)'
775 A C expression that is nonzero if X is a legitimate immediate
776 operand on the target machine when generating position independent
777 code. You can assume that X satisfies `CONSTANT_P', so you need
778 not check this. You can also assume FLAG_PIC is true, so you need
779 not check it either. You need not define this macro if all
780 constants (including `SYMBOL_REF') can be immediate operands when
781 generating position independent code. */
782 #define LEGITIMATE_PIC_OPERAND_P(X) ! SYMBOLIC_CONST (X)
784 #define SYMBOLIC_CONST(X) \
785 (GET_CODE (X) == SYMBOL_REF \
786 || GET_CODE (X) == LABEL_REF \
787 || (GET_CODE (X) == CONST && symbolic_reference_mentioned_p (X)))
789 /* Max number of bytes we can move from memory to memory
790 in one reasonably fast instruction. */
791 #define MOVE_MAX UNITS_PER_WORD
793 /* If a memory-to-memory move would take MOVE_RATIO or more simple
794 move-instruction pairs, we will do a cpymem or libcall instead. */
796 #define MOVE_RATIO(speed) 5
798 /* STORAGE LAYOUT: target machine storage layout
799 Define this macro as a C expression which is nonzero if accessing
800 less than a word of memory (i.e. a `char' or a `short') is no
801 faster than accessing a word of memory, i.e., if such access
802 require more than one instruction or if there is no difference in
803 cost between byte and (aligned) word loads.
805 When this macro is not defined, the compiler will access a field by
806 finding the smallest containing object; when it is defined, a
807 fullword load will be used if alignment permits. Unless bytes
808 accesses are faster than word accesses, using word accesses is
809 preferable since it may eliminate subsequent memory access if
810 subsequent accesses occur to other fields in the same word of the
811 structure, but to different bytes. */
812 #define SLOW_BYTE_ACCESS 0
814 /* Define this if most significant bit is lowest numbered
815 in instructions that operate on numbered bit-fields. */
816 #define BITS_BIG_ENDIAN 0
818 /* Define this if most significant byte of a word is the lowest numbered.
819 We can't access bytes but if we could we would in the Big Endian order. */
820 #define BYTES_BIG_ENDIAN 0
822 /* Define this if most significant word of a multiword number is numbered. */
823 #define WORDS_BIG_ENDIAN 0
825 /* Width in bits of a "word", which is the contents of a machine register.
826 Note that this is not necessarily the width of data type `int';
827 if using 16-bit ints on a 68000, this would still be 32.
828 But on a machine with 16-bit registers, this would be 16. */
829 #define BITS_PER_WORD 32
831 /* Width of a word, in units (bytes). */
832 #define UNITS_PER_WORD 4
834 /* Width in bits of a pointer.
835 See also the macro `Pmode1' defined below. */
836 #define POINTER_SIZE 32
838 /* Allocation boundary (in *bits*) for storing pointers in memory. */
839 #define POINTER_BOUNDARY 32
841 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
842 #define PARM_BOUNDARY 32
844 /* Boundary (in *bits*) on which stack pointer should be aligned. */
845 #define STACK_BOUNDARY 32
847 /* Allocation boundary (in *bits*) for the code of a function. */
848 #define FUNCTION_BOUNDARY 32
850 /* Alignment of field after `int : 0' in a structure. */
851 #define EMPTY_FIELD_BOUNDARY BITS_PER_WORD
853 /* No data type wants to be aligned rounder than this. */
854 #define BIGGEST_ALIGNMENT 32
856 /* Define this if move instructions will actually fail to work
857 when given unaligned data. */
858 #define STRICT_ALIGNMENT 1
860 /* (shell-command "rm c-decl.o stor-layout.o")
861 * never define PCC_BITFIELD_TYPE_MATTERS
862 * really cause some alignment problem
865 #define UNITS_PER_FLOAT ((BFIN_FLOAT_TYPE_SIZE + BITS_PER_UNIT - 1) / \
868 #define UNITS_PER_DOUBLE ((BFIN_DOUBLE_TYPE_SIZE + BITS_PER_UNIT - 1) / \
872 /* what is the 'type' of size_t */
873 #define SIZE_TYPE "long unsigned int"
875 /* Define this as 1 if `char' should by default be signed; else as 0. */
876 #define DEFAULT_SIGNED_CHAR 1
877 /* FLOAT_TYPE_SIZE get poisoned, so add BFIN_ prefix. */
878 #define BFIN_FLOAT_TYPE_SIZE BITS_PER_WORD
879 #define SHORT_TYPE_SIZE 16
880 #define CHAR_TYPE_SIZE 8
881 #define INT_TYPE_SIZE 32
882 #define LONG_TYPE_SIZE 32
883 #define LONG_LONG_TYPE_SIZE 64
885 /* Note: Fix this to depend on target switch. -- lev */
887 /* Note: Try to implement double and force long double. -- tonyko
888 * #define __DOUBLES_ARE_FLOATS__
889 * #define DOUBLE_TYPE_SIZE FLOAT_TYPE_SIZE
890 * #define LONG_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE
891 * #define DOUBLES_ARE_FLOATS 1
894 /* DOUBLE_TYPE_SIZE get poisoned, so add BFIN_ prefix. */
895 #define BFIN_DOUBLE_TYPE_SIZE 64
897 /* `PROMOTE_MODE (M, UNSIGNEDP, TYPE)'
898 A macro to update M and UNSIGNEDP when an object whose type is
899 TYPE and which has the specified mode and signedness is to be
900 stored in a register. This macro is only called when TYPE is a
903 On most RISC machines, which only have operations that operate on
904 a full register, define this macro to set M to `word_mode' if M is
905 an integer mode narrower than `BITS_PER_WORD'. In most cases,
906 only integer modes should be widened because wider-precision
907 floating-point operations are usually more expensive than their
908 narrower counterparts.
910 For most machines, the macro definition does not change UNSIGNEDP.
911 However, some machines, have instructions that preferentially
912 handle either signed or unsigned quantities of certain modes. For
913 example, on the DEC Alpha, 32-bit loads from memory and 32-bit add
914 instructions sign-extend the result to 64 bits. On such machines,
915 set UNSIGNEDP according to which kind of extension is more
918 Do not define this macro if it would never modify M.*/
920 #define BFIN_PROMOTE_MODE_P(MODE) \
921 (!TARGET_DSP && GET_MODE_CLASS (MODE) == MODE_INT \
922 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD)
924 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
925 if (BFIN_PROMOTE_MODE_P(MODE)) \
927 if (MODE == QImode) \
929 else if (MODE == HImode) \
934 /* Describing Relative Costs of Operations */
936 /* Do not put function addr into constant pool */
937 #define NO_FUNCTION_CSE 1
939 /* Specify the machine mode that this machine uses
940 for the index in the tablejump instruction. */
941 #define CASE_VECTOR_MODE SImode
943 #define JUMP_TABLES_IN_TEXT_SECTION flag_pic
945 /* Define if operations between registers always perform the operation
946 on the full register even if a narrower mode is specified.
947 #define WORD_REGISTER_OPERATIONS 1
950 /* Evaluates to true if A and B are mac flags that can be used
951 together in a single multiply insn. That is the case if they are
952 both the same flag not involving M, or if one is a combination of
954 #define MACFLAGS_MATCH_P(A, B) \
956 || ((A) == MACFLAG_NONE && (B) == MACFLAG_M) \
957 || ((A) == MACFLAG_M && (B) == MACFLAG_NONE) \
958 || ((A) == MACFLAG_IS && (B) == MACFLAG_IS_M) \
959 || ((A) == MACFLAG_IS_M && (B) == MACFLAG_IS))
961 /* Switch into a generic section. */
962 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
964 #define PRINT_OPERAND(FILE, RTX, CODE) print_operand (FILE, RTX, CODE)
965 #define PRINT_OPERAND_ADDRESS(FILE, RTX) print_address_operand (FILE, RTX)
967 typedef enum sections
{
973 typedef enum directives
{
982 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) \
984 || ((C) == '|' && (STR)[1] == '|'))
986 #define TEXT_SECTION_ASM_OP ".text;"
987 #define DATA_SECTION_ASM_OP ".data;"
989 #define ASM_APP_ON ""
990 #define ASM_APP_OFF ""
992 #define ASM_GLOBALIZE_LABEL1(FILE, NAME) \
993 do { fputs (".global ", FILE); \
994 assemble_name (FILE, NAME); \
999 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1001 fputs (".type ", FILE); \
1002 assemble_name (FILE, NAME); \
1003 fputs (", STT_FUNC", FILE); \
1004 fputc (';', FILE); \
1005 fputc ('\n', FILE); \
1006 ASM_OUTPUT_FUNCTION_LABEL (FILE, NAME, DECL); \
1009 #define ASM_OUTPUT_LABEL(FILE, NAME) \
1010 do { assemble_name (FILE, NAME); \
1011 fputs (":\n",FILE); \
1014 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
1015 do { fprintf (FILE, "_%s", NAME); \
1018 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1019 do { char __buf[256]; \
1020 fprintf (FILE, "\t.dd\t"); \
1021 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", VALUE); \
1022 assemble_name (FILE, __buf); \
1023 fputc (';', FILE); \
1024 fputc ('\n', FILE); \
1027 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1028 MY_ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)
1030 #define MY_ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1033 fprintf (FILE, "\t.dd\t"); \
1034 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", VALUE); \
1035 assemble_name (FILE, __buf); \
1036 fputs (" - ", FILE); \
1037 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", REL); \
1038 assemble_name (FILE, __buf); \
1039 fputc (';', FILE); \
1040 fputc ('\n', FILE); \
1043 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1046 fprintf (FILE, "\t.align %d\n", 1 << (LOG)); \
1049 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1051 asm_output_skip (FILE, SIZE); \
1054 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1056 switch_to_section (data_section); \
1057 if ((SIZE) >= (unsigned int) 4 ) ASM_OUTPUT_ALIGN(FILE,2); \
1058 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
1059 ASM_OUTPUT_LABEL (FILE, NAME); \
1060 fprintf (FILE, "%s %ld;\n", ASM_SPACE, \
1061 (ROUNDED) > (unsigned int) 1 ? (ROUNDED) : 1); \
1064 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1066 ASM_GLOBALIZE_LABEL1(FILE,NAME); \
1067 ASM_OUTPUT_LOCAL (FILE, NAME, SIZE, ROUNDED); } while(0)
1069 #define ASM_COMMENT_START "//"
1071 #define PROFILE_BEFORE_PROLOGUE
1072 #define FUNCTION_PROFILER(FILE, LABELNO) \
1074 fprintf (FILE, "\t[--SP] = RETS;\n"); \
1075 if (TARGET_LONG_CALLS) \
1077 fprintf (FILE, "\tP2.h = __mcount;\n"); \
1078 fprintf (FILE, "\tP2.l = __mcount;\n"); \
1079 fprintf (FILE, "\tCALL (P2);\n"); \
1082 fprintf (FILE, "\tCALL __mcount;\n"); \
1083 fprintf (FILE, "\tRETS = [SP++];\n"); \
1086 #undef NO_PROFILE_COUNTERS
1087 #define NO_PROFILE_COUNTERS 1
1089 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) fprintf (FILE, "\t[--SP] = %s;\n", reg_names[REGNO])
1090 #define ASM_OUTPUT_REG_POP(FILE, REGNO) fprintf (FILE, "\t%s = [SP++];\n", reg_names[REGNO])
1092 extern rtx bfin_cc_rtx
, bfin_rets_rtx
;
1094 /* This works for GAS and some other assemblers. */
1095 #define SET_ASM_OP ".set "
1097 /* Debugger register number for a given compiler register number */
1098 #define DEBUGGER_REGNO(REGNO) (REGNO)
1100 #define SIZE_ASM_OP "\t.size\t"
1102 extern int splitting_for_sched
, splitting_loops
;
1104 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) ((CHAR) == '!')
1106 #ifndef TARGET_SUPPORTS_SYNC_CALLS
1107 #define TARGET_SUPPORTS_SYNC_CALLS 0
1115 unsigned int workarounds
;
1118 extern const struct bfin_cpu bfin_cpus
[];
1120 #endif /* _BFIN_CONFIG */