1 /* Definitions of target machine for GNU compiler. NEC V850 series
2 Copyright (C) 1996-2021 Free Software Foundation, Inc.
3 Contributed by Jeff Law (law@cygnus.com).
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
30 #define LIB_SPEC "%{!shared:%{!symbolic:--start-group -lc -lgcc --end-group}}"
37 #define TARGET_CPU_generic 1
38 #define TARGET_CPU_v850e 2
39 #define TARGET_CPU_v850e1 3
40 #define TARGET_CPU_v850e2 4
41 #define TARGET_CPU_v850e2v3 5
42 #define TARGET_CPU_v850e3v5 6
44 #ifndef TARGET_CPU_DEFAULT
45 #define TARGET_CPU_DEFAULT TARGET_CPU_generic
48 #define MASK_DEFAULT MASK_V850
49 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850}"
50 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850__}"
52 /* Choose which processor will be the default.
53 We must pass a -mv850xx option to the assembler if no explicit -mv* option
54 is given, because the assembler's processor default may not be correct. */
55 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e
57 #define MASK_DEFAULT MASK_V850E
58 #undef SUBTARGET_ASM_SPEC
59 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e}"
60 #undef SUBTARGET_CPP_SPEC
61 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e__}"
64 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e1
66 #define MASK_DEFAULT MASK_V850E /* No practical difference. */
67 #undef SUBTARGET_ASM_SPEC
68 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e1}"
69 #undef SUBTARGET_CPP_SPEC
70 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e1__} %{mv850e1:-D__v850e1__}"
73 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2
75 #define MASK_DEFAULT MASK_V850E2
76 #undef SUBTARGET_ASM_SPEC
77 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2}"
78 #undef SUBTARGET_CPP_SPEC
79 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2__} %{mv850e2:-D__v850e2__}"
82 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2v3
84 #define MASK_DEFAULT MASK_V850E2V3
85 #undef SUBTARGET_ASM_SPEC
86 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2v3}"
87 #undef SUBTARGET_CPP_SPEC
88 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2v3__} %{mv850e2v3:-D__v850e2v3__}"
91 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e3v5
93 #define MASK_DEFAULT MASK_V850E3V5
94 #undef SUBTARGET_ASM_SPEC
95 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e3v5}"
96 #undef SUBTARGET_CPP_SPEC
97 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e3v5__} %{mv850e3v5:-D__v850e3v5__}"
99 #define TARGET_VERSION fprintf (stderr, " (Renesas V850E3V5)");
102 #define TARGET_V850E3V5_UP ((TARGET_V850E3V5))
103 #define TARGET_V850E2V3_UP ((TARGET_V850E2V3) || TARGET_V850E3V5_UP)
104 #define TARGET_V850E2_UP ((TARGET_V850E2) || TARGET_V850E2V3_UP)
105 #define TARGET_V850E_UP ((TARGET_V850E) || TARGET_V850E2_UP)
106 #define TARGET_ALL ((TARGET_V850) || TARGET_V850E_UP)
108 #define ASM_SPEC "%{m850es:-mv850e1}%{!mv850es:%{mv*:-mv%*}} \
110 %{m8byte-align:-m8byte-align} \
111 %{msoft-float:-msoft-float} \
112 %{mhard-float:-mhard-float} \
113 %{mgcc-abi:-mgcc-abi}"
115 #define LINK_SPEC "%{mgcc-abi:-m v850}"
118 %{mv850e3v5:-D__v850e3v5__} \
119 %{mv850e2v3:-D__v850e2v3__} \
120 %{mv850e2:-D__v850e2__} \
121 %{mv850es:-D__v850e1__} \
122 %{mv850e1:-D__v850e1__} \
123 %{mv850e:-D__v850e__} \
124 %{mv850:-D__v850__} \
125 %(subtarget_cpp_spec) \
128 #define EXTRA_SPECS \
129 { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \
130 { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }
133 /* Macro to decide when FPU instructions can be used. */
134 #define TARGET_USE_FPU (TARGET_V850E2V3_UP && ! TARGET_SOFT_FLOAT)
136 #define TARGET_CPU_CPP_BUILTINS() \
139 builtin_define( "__v851__" ); \
140 builtin_define( "__v850" ); \
141 builtin_define( "__v850__" ); \
142 builtin_assert( "machine=v850" ); \
143 builtin_assert( "cpu=v850" ); \
145 builtin_define ("__EP__"); \
146 if (TARGET_GCC_ABI) \
147 builtin_define ("__V850_GCC_ABI__"); \
149 builtin_define ("__V850_RH850_ABI__"); \
150 if (! TARGET_DISABLE_CALLT) \
151 builtin_define ("__V850_CALLT__"); \
152 if (TARGET_8BYTE_ALIGN) \
153 builtin_define ("__V850_8BYTE_ALIGN__");\
154 builtin_define (TARGET_USE_FPU ? \
155 "__FPU_OK__" : "__NO_FPU__");\
159 #define MASK_CPU (MASK_V850 | MASK_V850E | MASK_V850E1 | MASK_V850E2 | MASK_V850E2V3 | MASK_V850E3V5)
161 /* Target machine storage layout */
163 /* Define this if most significant bit is lowest numbered
164 in instructions that operate on numbered bit-fields.
165 This is not true on the NEC V850. */
166 #define BITS_BIG_ENDIAN 0
168 /* Define this if most significant byte of a word is the lowest numbered. */
169 /* This is not true on the NEC V850. */
170 #define BYTES_BIG_ENDIAN 0
172 /* Define this if most significant word of a multiword number is lowest
174 This is not true on the NEC V850. */
175 #define WORDS_BIG_ENDIAN 0
177 /* Width of a word, in units (bytes). */
178 #define UNITS_PER_WORD 4
180 /* Define this macro if it is advisable to hold scalars in registers
181 in a wider mode than that declared by the program. In such cases,
182 the value is constrained to be within the bounds of the declared
183 type, but kept valid in the wider mode. The signedness of the
184 extension may differ from that of the type.
186 Some simple experiments have shown that leaving UNSIGNEDP alone
187 generates the best overall code. */
189 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
190 if (GET_MODE_CLASS (MODE) == MODE_INT \
191 && GET_MODE_SIZE (MODE) < 4) \
194 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
195 #define PARM_BOUNDARY 32
197 /* The stack goes in 32-bit lumps. */
198 #define STACK_BOUNDARY BIGGEST_ALIGNMENT
200 /* Allocation boundary (in *bits*) for the code of a function.
201 16 is the minimum boundary; 32 would give better performance. */
202 #define FUNCTION_BOUNDARY (((! TARGET_GCC_ABI) || optimize_size) ? 16 : 32)
204 /* No data type wants to be aligned rounder than this. */
205 #define BIGGEST_ALIGNMENT (TARGET_8BYTE_ALIGN ? 64 : 32)
207 /* Alignment of field after `int : 0' in a structure. */
208 #define EMPTY_FIELD_BOUNDARY 32
210 /* No structure field wants to be aligned rounder than this. */
211 #define BIGGEST_FIELD_ALIGNMENT BIGGEST_ALIGNMENT
213 /* Define this if move instructions will actually fail to work
214 when given unaligned data. */
215 #define STRICT_ALIGNMENT (!TARGET_NO_STRICT_ALIGN)
217 /* Define this as 1 if `char' should by default be signed; else as 0.
219 On the NEC V850, loads do sign extension, so make this default. */
220 #define DEFAULT_SIGNED_CHAR 1
223 #define SIZE_TYPE "unsigned int"
226 #define PTRDIFF_TYPE "int"
229 #define WCHAR_TYPE "long int"
231 #undef WCHAR_TYPE_SIZE
232 #define WCHAR_TYPE_SIZE BITS_PER_WORD
234 /* Standard register usage. */
236 /* Number of actual hardware registers.
237 The hardware registers are assigned numbers for the compiler
238 from 0 to just below FIRST_PSEUDO_REGISTER.
240 All registers that the compiler knows about must be given numbers,
241 even those that are not normally considered general registers. */
243 #define FIRST_PSEUDO_REGISTER 36
245 /* 1 for registers that have pervasive standard uses
246 and are not available for the register allocator. */
248 #define FIXED_REGISTERS \
249 { 1, 1, 1, 1, 1, 1, 0, 0, \
250 0, 0, 0, 0, 0, 0, 0, 0, \
251 0, 0, 0, 0, 0, 0, 0, 0, \
252 0, 0, 0, 0, 0, 0, 1, 0, \
256 /* 1 for registers not available across function calls.
257 These must include the FIXED_REGISTERS and also any
258 registers that can be used without being saved.
259 The latter must include the registers where values are returned
260 and the register where structure-value addresses are passed.
261 Aside from that, you can include as many other registers as you
264 #define CALL_USED_REGISTERS \
265 { 1, 1, 1, 1, 1, 1, 1, 1, \
266 1, 1, 1, 1, 1, 1, 1, 1, \
267 1, 1, 1, 1, 0, 0, 0, 0, \
268 0, 0, 0, 0, 0, 0, 1, 1, \
272 /* List the order in which to allocate registers. Each register must be
273 listed once, even those in FIXED_REGISTERS.
275 On the 850, we make the return registers first, then all of the volatile
276 registers, then the saved registers in reverse order to better save the
277 registers with an out of line function, and finally the fixed
280 #define REG_ALLOC_ORDER \
282 10, 11, /* return registers */ \
283 12, 13, 14, 15, 16, 17, 18, 19, /* scratch registers */ \
284 6, 7, 8, 9, 31, /* argument registers */ \
285 29, 28, 27, 26, 25, 24, 23, 22, /* saved registers */ \
287 0, 1, 3, 4, 5, 30, 32, 33, /* fixed registers */ \
292 /* Define the classes of registers for register constraints in the
293 machine description. Also define ranges of constants.
295 One of the classes must always be named ALL_REGS and include all hard regs.
296 If there is more than one class, another class must be named NO_REGS
297 and contain no registers.
299 The name GENERAL_REGS must be the name of a class (or an alias for
300 another name such as ALL_REGS). This is the class of registers
301 that is allowed by "g" or "r" in a register constraint.
302 Also, registers outside this class are allocated only when
303 instructions express preferences for them.
305 The classes must be numbered in nondecreasing order; that is,
306 a larger-numbered class must never be contained completely
307 in a smaller-numbered class.
309 For any two classes, it is very desirable that there be another
310 class that represents their union. */
314 NO_REGS
, EVEN_REGS
, GENERAL_REGS
, ALL_REGS
, LIM_REG_CLASSES
317 #define N_REG_CLASSES (int) LIM_REG_CLASSES
319 /* Give names of register classes as strings for dump file. */
321 #define REG_CLASS_NAMES \
322 { "NO_REGS", "EVEN_REGS", "GENERAL_REGS", "ALL_REGS", "LIM_REGS" }
324 /* Define which registers fit in which classes.
325 This is an initializer for a vector of HARD_REG_SET
326 of length N_REG_CLASSES. */
328 #define REG_CLASS_CONTENTS \
330 { 0x00000000,0x0 }, /* NO_REGS */ \
331 { 0x55555554,0x0 }, /* EVEN_REGS */ \
332 { 0xfffffffe,0x0 }, /* GENERAL_REGS */ \
333 { 0xffffffff,0x0 }, /* ALL_REGS */ \
336 /* The same information, inverted:
337 Return the class number of the smallest class containing
338 reg number REGNO. This could be a conditional expression
339 or could index an array. */
341 #define REGNO_REG_CLASS(REGNO) ((REGNO == CC_REGNUM || REGNO == FCC_REGNUM) ? NO_REGS : GENERAL_REGS)
343 /* The class value for index registers, and the one for base regs. */
345 #define INDEX_REG_CLASS NO_REGS
346 #define BASE_REG_CLASS GENERAL_REGS
348 /* Macros to check register numbers against specific register classes. */
350 /* These assume that REGNO is a hard or pseudo reg number.
351 They give nonzero only if REGNO is a hard reg of the suitable class
352 or a pseudo reg currently allocated to a suitable hard reg.
353 Since they use reg_renumber, they are safe only once reg_renumber
354 has been allocated, which happens in reginfo.c during register
357 #define REGNO_OK_FOR_BASE_P(regno) \
358 (((regno) < FIRST_PSEUDO_REGISTER \
359 && (regno) != CC_REGNUM \
360 && (regno) != FCC_REGNUM) \
361 || reg_renumber[regno] >= 0)
363 #define REGNO_OK_FOR_INDEX_P(regno) 0
365 /* Convenience wrappers around insn_const_int_ok_for_constraint. */
367 #define CONST_OK_FOR_I(VALUE) \
368 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_I)
369 #define CONST_OK_FOR_J(VALUE) \
370 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_J)
371 #define CONST_OK_FOR_K(VALUE) \
372 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_K)
373 #define CONST_OK_FOR_L(VALUE) \
374 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_L)
375 #define CONST_OK_FOR_M(VALUE) \
376 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_M)
377 #define CONST_OK_FOR_N(VALUE) \
378 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_N)
379 #define CONST_OK_FOR_O(VALUE) \
380 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_O)
381 #define CONST_OK_FOR_W(VALUE) \
382 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_W)
384 /* Stack layout; function entry, exit and calling. */
386 /* Define this if pushing a word on the stack
387 makes the stack pointer a smaller address. */
389 #define STACK_GROWS_DOWNWARD 1
391 /* Define this to nonzero if the nominal address of the stack frame
392 is at the high-address end of the local variables;
393 that is, each additional local variable allocated
394 goes at a more negative offset in the frame. */
396 #define FRAME_GROWS_DOWNWARD 1
398 /* Offset of first parameter from the argument pointer register value. */
399 /* Is equal to the size of the saved fp + pc, even if an fp isn't
400 saved since the value is used before we know. */
402 #define FIRST_PARM_OFFSET(FNDECL) 0
404 /* Specify the registers used for certain standard purposes.
405 The values of these macros are register numbers. */
407 /* Register to use for pushing function arguments. */
408 #define STACK_POINTER_REGNUM SP_REGNUM
410 /* Base register for access to local variables of the function. */
411 #define FRAME_POINTER_REGNUM 34
413 /* Register containing return address from latest function call. */
414 #define LINK_POINTER_REGNUM LP_REGNUM
416 /* On some machines the offset between the frame pointer and starting
417 offset of the automatic variables is not known until after register
418 allocation has been done (for example, because the saved registers
419 are between these two locations). On those machines, define
420 `FRAME_POINTER_REGNUM' the number of a special, fixed register to
421 be used internally until the offset is known, and define
422 `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number
423 used for the frame pointer.
425 You should define this macro only in the very rare circumstances
426 when it is not possible to calculate the offset between the frame
427 pointer and the automatic variables until after register
428 allocation has been completed. When this macro is defined, you
429 must also indicate in your definition of `ELIMINABLE_REGS' how to
430 eliminate `FRAME_POINTER_REGNUM' into either
431 `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'.
433 Do not define this macro if it would be the same as
434 `FRAME_POINTER_REGNUM'. */
435 #undef HARD_FRAME_POINTER_REGNUM
436 #define HARD_FRAME_POINTER_REGNUM 29
438 /* Base register for access to arguments of the function. */
439 #define ARG_POINTER_REGNUM 35
441 /* Register in which static-chain is passed to a function.
442 This must be a call used register. */
443 #define STATIC_CHAIN_REGNUM 19
445 /* If defined, this macro specifies a table of register pairs used to
446 eliminate unneeded registers that point into the stack frame. If
447 it is not defined, the only elimination attempted by the compiler
448 is to replace references to the frame pointer with references to
451 The definition of this macro is a list of structure
452 initializations, each of which specifies an original and
453 replacement register.
455 On some machines, the position of the argument pointer is not
456 known until the compilation is completed. In such a case, a
457 separate hard register must be used for the argument pointer.
458 This register can be eliminated by replacing it with either the
459 frame pointer or the argument pointer, depending on whether or not
460 the frame pointer has been eliminated.
462 In this case, you might specify:
463 #define ELIMINABLE_REGS \
464 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
465 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
466 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
468 Note that the elimination of the argument pointer with the stack
469 pointer is specified first since that is the preferred elimination. */
471 #define ELIMINABLE_REGS \
472 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
473 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \
474 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
475 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }} \
477 /* This macro returns the initial difference between the specified pair
480 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
482 if ((FROM) == FRAME_POINTER_REGNUM) \
483 (OFFSET) = get_frame_size () + crtl->outgoing_args_size; \
484 else if ((FROM) == ARG_POINTER_REGNUM) \
485 (OFFSET) = compute_frame_size (get_frame_size (), (long *)0); \
487 gcc_unreachable (); \
490 /* Keep the stack pointer constant throughout the function. */
491 #define ACCUMULATE_OUTGOING_ARGS 1
493 #define RETURN_ADDR_RTX(COUNT, FP) v850_return_addr (COUNT)
495 /* Define a data type for recording info about an argument list
496 during the scan of that argument list. This data type should
497 hold all necessary information about the function itself
498 and about the args processed so far, enough to enable macros
499 such as FUNCTION_ARG to determine where the next arg should go. */
501 #define CUMULATIVE_ARGS struct cum_arg
502 struct cum_arg
{ int nbytes
; };
504 /* Initialize a variable CUM of type CUMULATIVE_ARGS
505 for a call to a function whose data type is FNTYPE.
506 For a library call, FNTYPE is 0. */
508 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
509 do { (CUM).nbytes = 0; } while (0)
511 /* When a parameter is passed in a register, stack space is still
513 #define REG_PARM_STACK_SPACE(DECL) 0
515 /* 1 if N is a possible register number for function argument passing. */
517 #define FUNCTION_ARG_REGNO_P(N) (N >= 6 && N <= 9)
519 #define DEFAULT_PCC_STRUCT_RETURN 0
521 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
522 the stack pointer does not matter. The value is tested only in
523 functions that have frame pointers.
524 No definition is equivalent to always zero. */
526 #define EXIT_IGNORE_STACK 1
528 /* Define this macro as a C expression that is nonzero for registers
529 used by the epilogue or the `return' pattern. */
531 #define EPILOGUE_USES(REGNO) \
532 (reload_completed && (REGNO) == LINK_POINTER_REGNUM)
534 /* Output assembler code to FILE to increment profiler label # LABELNO
535 for profiling a function entry. */
537 #define FUNCTION_PROFILER(FILE, LABELNO) ;
539 /* Length in units of the trampoline for entering a nested function. */
541 #define TRAMPOLINE_SIZE 24
543 /* Addressing modes, and classification of registers for them. */
546 /* 1 if X is an rtx for a constant that is a valid address. */
548 /* ??? This seems too exclusive. May get better code by accepting more
549 possibilities here, in particular, should accept ZDA_NAME SYMBOL_REFs. */
551 #define CONSTANT_ADDRESS_P(X) constraint_satisfied_p (X, CONSTRAINT_K)
553 /* Maximum number of registers that can appear in a valid memory address. */
555 #define MAX_REGS_PER_ADDRESS 1
557 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
558 return the mode to be used for the comparison.
560 For floating-point equality comparisons, CCFPEQmode should be used.
561 VOIDmode should be used in all other cases.
563 For integer comparisons against zero, reduce to CCNOmode or CCZmode if
564 possible, to allow for more combinations. */
566 #define SELECT_CC_MODE(OP, X, Y) v850_select_cc_mode (OP, X, Y)
568 /* Nonzero if access to memory by bytes or half words is no faster
569 than accessing full words. */
570 #define SLOW_BYTE_ACCESS 1
572 /* According expr.c, a value of around 6 should minimize code size, and
573 for the V850 series, that's our primary concern. */
574 #define MOVE_RATIO(speed) 6
576 /* Indirect calls are expensive, never turn a direct call
577 into an indirect call. */
578 #define NO_FUNCTION_CSE 1
580 /* The four different data regions on the v850. */
589 #define TEXT_SECTION_ASM_OP "\t.section .text"
590 #define DATA_SECTION_ASM_OP "\t.section .data"
591 #define BSS_SECTION_ASM_OP "\t.section .bss"
592 #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\""
593 #define SBSS_SECTION_ASM_OP "\t.section .sbss,\"aw\""
595 #define SCOMMON_ASM_OP "\t.scomm\t"
596 #define ZCOMMON_ASM_OP "\t.zcomm\t"
597 #define TCOMMON_ASM_OP "\t.tcomm\t"
599 #define ASM_COMMENT_START "#"
601 /* Output to assembler file text saying following lines
602 may contain character constants, extra white space, comments, etc. */
604 #define ASM_APP_ON "#APP\n"
606 /* Output to assembler file text saying following lines
607 no longer contain unusual constructs. */
609 #define ASM_APP_OFF "#NO_APP\n"
611 #undef USER_LABEL_PREFIX
612 #define USER_LABEL_PREFIX "_"
614 /* This says how to output the assembler to define a global
615 uninitialized but not common symbol. */
617 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
618 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
620 #undef ASM_OUTPUT_ALIGNED_BSS
621 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
622 v850_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
624 /* This says how to output the assembler to define a global
625 uninitialized, common symbol. */
626 #undef ASM_OUTPUT_ALIGNED_COMMON
627 #undef ASM_OUTPUT_COMMON
628 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
629 v850_output_common (FILE, DECL, NAME, SIZE, ALIGN)
631 /* This says how to output the assembler to define a local
632 uninitialized symbol. */
633 #undef ASM_OUTPUT_ALIGNED_LOCAL
634 #undef ASM_OUTPUT_LOCAL
635 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
636 v850_output_local (FILE, DECL, NAME, SIZE, ALIGN)
638 /* Globalizing directive for a label. */
639 #define GLOBAL_ASM_OP "\t.global "
641 #define ASM_PN_FORMAT "%s___%lu"
643 /* This is how we tell the assembler that two symbols have the same value. */
645 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
646 do { assemble_name(FILE, NAME1); \
647 fputs(" = ", FILE); \
648 assemble_name(FILE, NAME2); \
649 fputc('\n', FILE); } while (0)
652 /* How to refer to registers in assembler output.
653 This sequence is indexed by compiler's hard-register-number (see above). */
655 #define REGISTER_NAMES \
656 { "r0", "r1", "r2", "sp", "gp", "r5", "r6" , "r7", \
657 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
658 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
659 "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31", \
663 /* Register numbers */
665 #define ADDITIONAL_REGISTER_NAMES \
666 { { "zero", ZERO_REGNUM }, \
675 /* This is how to output an element of a case-vector that is absolute. */
677 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
678 fprintf (FILE, "\t%s .L%d\n", \
679 (TARGET_BIG_SWITCH ? ".long" : ".short"), VALUE)
681 /* This is how to output an element of a case-vector that is relative. */
683 /* Disable the shift, which is for the currently disabled "switch"
684 opcode. Se casesi in v850.md. */
686 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
687 fprintf (FILE, "\t%s %s.L%d-.L%d%s\n", \
688 (TARGET_BIG_SWITCH ? ".long" : ".short"), \
689 (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E_UP) ? "(" : ""), \
691 (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E_UP) ? ")>>1" : ""))
693 #define ASM_OUTPUT_ALIGN(FILE, LOG) \
695 fprintf (FILE, "\t.align %d\n", (LOG))
697 /* We don't have to worry about dbx compatibility for the v850. */
698 #define DEFAULT_GDB_EXTENSIONS 1
700 /* Use dwarf2 debugging info by default. */
701 #undef PREFERRED_DEBUGGING_TYPE
702 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
704 #define DWARF2_FRAME_INFO 1
705 #define DWARF2_UNWIND_INFO 0
706 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, LINK_POINTER_REGNUM)
707 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LINK_POINTER_REGNUM)
709 #ifndef ASM_GENERATE_INTERNAL_LABEL
710 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
711 sprintf (STRING, "*.%s%u", PREFIX, (unsigned int)(NUM))
714 /* Specify the machine mode that this machine uses
715 for the index in the tablejump instruction. */
716 #define CASE_VECTOR_MODE (TARGET_BIG_SWITCH ? SImode : HImode)
718 /* Define as C expression which evaluates to nonzero if the tablejump
719 instruction expects the table to contain offsets from the address of the
721 Do not define this if the table should contain absolute addresses. */
722 #define CASE_VECTOR_PC_RELATIVE 1
724 /* The switch instruction requires that the jump table immediately follow
726 #define JUMP_TABLES_IN_TEXT_SECTION (!TARGET_JUMP_TABLES_IN_DATA_SECTION)
728 #undef ASM_OUTPUT_BEFORE_CASE_LABEL
729 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
730 ASM_OUTPUT_ALIGN ((FILE), (TARGET_BIG_SWITCH ? 2 : 1))
732 #define WORD_REGISTER_OPERATIONS 1
734 /* Byte and short loads sign extend the value to a word. */
735 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
737 /* Max number of bytes we can move from memory to memory
738 in one reasonably fast instruction. */
741 /* Define if shifts truncate the shift count
742 which implies one can omit a sign-extension or zero-extension
744 #define SHIFT_COUNT_TRUNCATED 1
746 /* Specify the machine mode that pointers have.
747 After generation of rtl, the compiler makes no further distinction
748 between pointers and any other objects of this machine mode. */
751 /* A function address in a call instruction
752 is a byte address (for indexing purposes)
753 so give the MEM rtx a byte's mode. */
754 #define FUNCTION_MODE QImode
756 /* Tell compiler we want to support GHS pragmas */
757 #define REGISTER_TARGET_PRAGMAS() do { \
758 c_register_pragma ("ghs", "interrupt", ghs_pragma_interrupt); \
759 c_register_pragma ("ghs", "section", ghs_pragma_section); \
760 c_register_pragma ("ghs", "starttda", ghs_pragma_starttda); \
761 c_register_pragma ("ghs", "startsda", ghs_pragma_startsda); \
762 c_register_pragma ("ghs", "startzda", ghs_pragma_startzda); \
763 c_register_pragma ("ghs", "endtda", ghs_pragma_endtda); \
764 c_register_pragma ("ghs", "endsda", ghs_pragma_endsda); \
765 c_register_pragma ("ghs", "endzda", ghs_pragma_endzda); \
768 /* enum GHS_SECTION_KIND is an enumeration of the kinds of sections that
769 can appear in the "ghs section" pragma. These names are used to index
770 into the GHS_default_section_names[] and GHS_current_section_names[]
771 that are defined in v850.c, and so the ordering of each must remain
774 These arrays give the default and current names for each kind of
775 section defined by the GHS pragmas. The current names can be changed
776 by the "ghs section" pragma. If the current names are null, use
777 the default names. Note that the two arrays have different types.
779 For the *normal* section kinds (like .data, .text, etc.) we do not
780 want to explicitly force the name of these sections, but would rather
781 let the linker (or at least the back end) choose the name of the
782 section, UNLESS the user has forced a specific name for these section
783 kinds. To accomplish this set the name in ghs_default_section_names
786 enum GHS_section_kind
788 GHS_SECTION_KIND_DEFAULT
,
790 GHS_SECTION_KIND_TEXT
,
791 GHS_SECTION_KIND_DATA
,
792 GHS_SECTION_KIND_RODATA
,
793 GHS_SECTION_KIND_BSS
,
794 GHS_SECTION_KIND_SDATA
,
795 GHS_SECTION_KIND_ROSDATA
,
796 GHS_SECTION_KIND_TDATA
,
797 GHS_SECTION_KIND_ZDATA
,
798 GHS_SECTION_KIND_ROZDATA
,
800 COUNT_OF_GHS_SECTION_KINDS
/* must be last */
803 /* The following code is for handling pragmas supported by the
804 v850 compiler produced by Green Hills Software. This is at
805 the specific request of a customer. */
807 typedef struct data_area_stack_element
809 struct data_area_stack_element
* prev
;
810 v850_data_area data_area
; /* Current default data area. */
811 } data_area_stack_element
;
813 /* Track the current data area set by the
814 data area pragma (which can be nested). */
815 extern data_area_stack_element
* data_area_stack
;
817 /* Names of the various data areas used on the v850. */
818 extern const char * GHS_default_section_names
[(int) COUNT_OF_GHS_SECTION_KINDS
];
819 extern const char * GHS_current_section_names
[(int) COUNT_OF_GHS_SECTION_KINDS
];
821 /* The assembler op to start the file. */
823 #define FILE_ASM_OP "\t.file\n"
825 /* Implement ZDA, TDA, and SDA */
827 #define EP_REGNUM 30 /* ep register number */
829 #define SYMBOL_FLAG_ZDA (SYMBOL_FLAG_MACH_DEP << 0)
830 #define SYMBOL_FLAG_TDA (SYMBOL_FLAG_MACH_DEP << 1)
831 #define SYMBOL_FLAG_SDA (SYMBOL_FLAG_MACH_DEP << 2)
832 #define SYMBOL_REF_ZDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_ZDA) != 0)
833 #define SYMBOL_REF_TDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_TDA) != 0)
834 #define SYMBOL_REF_SDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_SDA) != 0)
836 #define TARGET_ASM_INIT_SECTIONS v850_asm_init_sections
838 #define ADJUST_INSN_LENGTH(INSN, LENGTH) \
839 ((LENGTH) = v850_adjust_insn_length ((INSN), (LENGTH)))
841 #endif /* ! GCC_V850_H */