1 /* Definitions of target machine for GNU compiler.
2 Motorola m88100 in an 88open OCS/BCS environment.
3 Copyright (C) 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
4 Contributed by Michael Tiemann (tiemann@mcc.com)
5 Enhanced by Michael Meissner (meissner@osf.org)
6 Currently supported by Tom Wood (wood@dg-rtp.dg.com)
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
24 /* The m88100 port of GNU CC adheres to the various standards from 88open.
25 These documents are available by writing:
27 88open Consortium Ltd.
28 100 Homeland Court, Suite 800
32 In brief, the current standards are:
34 Binary Compatibility Standard, Release 1.1A, May 1991
35 This provides for portability of application-level software at the
36 executable level for AT&T System V Release 3.2.
38 Object Compatibility Standard, Release 1.1A, May 1991
39 This provides for portability of application-level software at the
40 object file and library level for C, Fortran, and Cobol, and again,
43 Under development are standards for AT&T System V Release 4, based on the
44 [generic] System V Application Binary Interface from AT&T. These include:
46 System V Application Binary Interface, Motorola 88000 Processor Supplement
47 Another document from AT&T for SVR4 specific to the m88100.
48 Available from Prentice Hall.
50 System V Application Binary Interface, Motorola 88000 Processor Supplement,
51 Release 1.1, Draft H, May 6, 1991
52 A proposed update to the AT&T document from 88open.
54 System V ABI Implementation Guide for the M88000 Processor,
55 Release 1.0, January 1991
56 A companion ABI document from 88open. */
58 /* Other m88k*.h files include this one and override certain items.
59 At present, these are m88kv3.h, m88kv4.h, m88kdgux.h, and m88kluna.h.
60 Additionally, m88kv4.h and m88kdgux.h include svr4.h first. All other
61 m88k targets except m88kluna.h are based on svr3.h. */
63 /* Choose SVR3 as the default. */
64 #if !defined(DBX_DEBUGGING_INFO) && !defined(DWARF_DEBUGGING_INFO)
68 /* External types used. */
70 /* What instructions are needed to manufacture an integer constant. */
71 enum m88k_instruction {
82 /* External variables/functions defined in m88k.c. */
84 extern char *m88k_pound_sign;
85 extern char *m88k_short_data;
87 extern int m88k_gp_threshold;
88 extern int m88k_prologue_done;
89 extern int m88k_function_number;
90 extern int m88k_fp_offset;
91 extern int m88k_stack_size;
92 extern int m88k_case_index;
94 extern struct rtx_def *m88k_compare_reg;
95 extern struct rtx_def *m88k_compare_op0;
96 extern struct rtx_def *m88k_compare_op1;
98 extern enum attr_cpu m88k_cpu;
100 extern int null_prologue ();
101 extern int integer_ok_for_set ();
102 extern int m88k_debugger_offset ();
104 extern void emit_bcnd ();
105 extern void expand_block_move ();
106 extern void m88k_layout_frame ();
107 extern void m88k_expand_prologue ();
108 extern void m88k_begin_prologue ();
109 extern void m88k_end_prologue ();
110 extern void m88k_expand_epilogue ();
111 extern void m88k_begin_epilogue ();
112 extern void m88k_end_epilogue ();
113 extern void output_function_profiler ();
114 extern void output_function_block_profiler ();
115 extern void output_block_profiler ();
116 extern void output_file_start ();
117 extern void output_ascii ();
118 extern void output_label ();
119 extern void print_operand ();
120 extern void print_operand_address ();
122 extern char *output_load_const_int ();
123 extern char *output_load_const_float ();
124 extern char *output_load_const_double ();
125 extern char *output_load_const_dimode ();
126 extern char *output_and ();
127 extern char *output_ior ();
128 extern char *output_xor ();
129 extern char *output_call ();
131 extern struct rtx_def *emit_test ();
132 extern struct rtx_def *legitimize_address ();
133 extern struct rtx_def *legitimize_operand ();
134 extern struct rtx_def *m88k_function_arg ();
135 extern struct rtx_def *m88k_builtin_saveregs ();
137 extern enum m88k_instruction classify_integer ();
139 /* external variables defined elsewhere in the compiler */
141 extern int target_flags; /* -m compiler switches */
142 extern int frame_pointer_needed; /* current function has a FP */
143 extern int current_function_pretend_args_size; /* args size without ... */
144 extern int flag_delayed_branch; /* -fdelayed-branch */
145 extern int flag_pic; /* -fpic */
146 extern char * reg_names[];
148 /* Specify the default monitors. The meaning of these values can
149 be obtained by doing "grep MONITOR_GCC *m88k*". Generally, the
150 values downward from 0x8000 are tests that will soon go away.
151 values upward from 0x1 are generally useful tests that will remain. */
154 #define MONITOR_GCC 0
157 /*** Controlling the Compilation Driver, `gcc' ***/
159 /* Some machines may desire to change what optimizations are performed for
160 various optimization levels. This macro, if defined, is executed once
161 just after the optimization level is determined and before the remainder
162 of the command options have been parsed. Values set in this macro are
163 used as the default values for the other command line options.
165 LEVEL is the optimization level specified; 2 if -O2 is specified,
166 1 if -O is specified, and 0 if neither is specified. */
168 /* This macro used to store 0 in flag_signed_bitfields.
169 Not only is that misuse of this macro; the whole idea is wrong.
171 The GNU C dialect makes bitfields signed by default,
172 regardless of machine type. Making any machine inconsistent in this
173 regard is bad for portability.
175 I chose to make bitfields signed by default because this is consistent
176 with the way ordinary variables are handled: `int' equals `signed int'.
177 If there is a good reason to prefer making bitfields unsigned by default,
178 it cannot have anything to do with the choice of machine.
179 If the reason is good enough, we should change the convention for all machines.
181 -- rms, 20 July 1991. */
183 #define OPTIMIZATION_OPTIONS(LEVEL) \
187 flag_omit_frame_pointer = 1; \
191 /* LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC defined in svr3.h.
192 ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC redefined
194 CPP_SPEC, ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and
195 STARTFILE_SPEC redefined in m88kdgux.h. */
197 /*** Run-time Target Specification ***/
199 /* Names to predefine in the preprocessor for this target machine.
200 Redefined in m88kv3.h, m88kv4.h, m88kdgux.h, and m88kluna.h. */
201 #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -D__CLASSIFY_TYPE__=2"
203 #define TARGET_VERSION fprintf (stderr, " (%s%s)", \
204 VERSION_INFO1, VERSION_INFO2)
206 /* Print subsidiary information on the compiler version in use.
207 Redefined in m88kv4.h, and m88kluna.h. */
208 #define VERSION_INFO1 "88open OCS/BCS, "
209 #define VERSION_INFO2 "08/28/92"
210 #define VERSION_STRING version_string
211 #define TM_SCCS_ID "@(#)m88k.h 2.2.7.6 08/28/92 07:51:00"
213 /* Run-time compilation parameters selecting different hardware subsets. */
215 /* Macro to define tables used to set the flags.
216 This is a list in braces of pairs in braces,
217 each pair being { "NAME", VALUE }
218 where VALUE is the bits to set or minus the bits to clear.
219 An empty string NAME is used to identify the default VALUE. */
221 #define MASK_88100 0x00000001 /* Target m88100 */
222 #define MASK_88110 0x00000002 /* Target m88110 */
223 #define MASK_OCS_DEBUG_INFO 0x00000004 /* Emit .tdesc info */
224 #define MASK_OCS_FRAME_POSITION 0x00000008 /* Debug frame = CFA, not r30 */
225 #define MASK_SVR4 0x00000010 /* Target is AT&T System V.4 */
226 #define MASK_VERSION_0300 0x00000020 /* Use version 03.00 syntax */
227 #define MASK_NO_UNDERSCORES 0x00000040 /* Don't emit a leading `_' */
228 #define MASK_BIG_PIC 0x00000080 /* PIC with large got-rel's -fPIC */
229 #define MASK_TRAP_LARGE_SHIFT 0x00000100 /* Trap if shift not <= 31 */
230 #define MASK_HANDLE_LARGE_SHIFT 0x00000200 /* Handle shift count >= 32 */
231 #define MASK_CHECK_ZERO_DIV 0x00000400 /* Check for int div. by 0 */
232 #define MASK_USE_DIV 0x00000800 /* No signed div. checks */
233 #define MASK_IDENTIFY_REVISION 0x00001000 /* Emit ident, with GCC rev */
234 #define MASK_WARN_PASS_STRUCT 0x00002000 /* Warn about passed structs */
235 #define MASK_OPTIMIZE_ARG_AREA 0x00004000 /* Save stack space */
237 #define MASK_88000 (MASK_88100 | MASK_88110)
238 #define MASK_EITHER_LARGE_SHIFT (MASK_TRAP_LARGE_SHIFT | \
239 MASK_HANDLE_LARGE_SHIFT)
241 #define TARGET_88100 ((target_flags & MASK_88000) == MASK_88100)
242 #define TARGET_88110 ((target_flags & MASK_88000) == MASK_88110)
243 #define TARGET_88000 ((target_flags & MASK_88000) == MASK_88000)
245 #define TARGET_OCS_DEBUG_INFO (target_flags & MASK_OCS_DEBUG_INFO)
246 #define TARGET_OCS_FRAME_POSITION (target_flags & MASK_OCS_FRAME_POSITION)
247 #define TARGET_SVR4 (target_flags & MASK_SVR4)
248 #define TARGET_VERSION_0300 (target_flags & MASK_VERSION_0300)
249 #define TARGET_NO_UNDERSCORES (target_flags & MASK_NO_UNDERSCORES)
250 #define TARGET_BIG_PIC (target_flags & MASK_BIG_PIC)
251 #define TARGET_TRAP_LARGE_SHIFT (target_flags & MASK_TRAP_LARGE_SHIFT)
252 #define TARGET_HANDLE_LARGE_SHIFT (target_flags & MASK_HANDLE_LARGE_SHIFT)
253 #define TARGET_CHECK_ZERO_DIV (target_flags & MASK_CHECK_ZERO_DIV)
254 #define TARGET_USE_DIV (target_flags & MASK_USE_DIV)
255 #define TARGET_IDENTIFY_REVISION (target_flags & MASK_IDENTIFY_REVISION)
256 #define TARGET_WARN_PASS_STRUCT (target_flags & MASK_WARN_PASS_STRUCT)
257 #define TARGET_OPTIMIZE_ARG_AREA (target_flags & MASK_OPTIMIZE_ARG_AREA)
259 #define TARGET_EITHER_LARGE_SHIFT (target_flags & MASK_EITHER_LARGE_SHIFT)
261 /* Redefined in m88kv3.h,m88kv4.h, and m88kdgux.h. */
262 #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV)
263 #define CPU_DEFAULT MASK_88100
265 #define TARGET_SWITCHES \
267 { "88110", MASK_88110 }, \
268 { "88100", MASK_88100 }, \
269 { "88000", MASK_88000 }, \
270 { "ocs-debug-info", MASK_OCS_DEBUG_INFO }, \
271 { "no-ocs-debug-info", -MASK_OCS_DEBUG_INFO }, \
272 { "ocs-frame-position", MASK_OCS_FRAME_POSITION }, \
273 { "no-ocs-frame-position", -MASK_OCS_FRAME_POSITION }, \
274 { "svr4", MASK_SVR4 }, \
275 { "svr3", -MASK_SVR4 }, \
276 { "version-03.00", MASK_VERSION_0300 }, \
277 { "no-underscores", MASK_NO_UNDERSCORES }, \
278 { "big-pic", MASK_BIG_PIC }, \
279 { "trap-large-shift", MASK_TRAP_LARGE_SHIFT }, \
280 { "handle-large-shift", MASK_HANDLE_LARGE_SHIFT }, \
281 { "check-zero-division", MASK_CHECK_ZERO_DIV }, \
282 { "no-check-zero-division", -MASK_CHECK_ZERO_DIV }, \
283 { "use-div-instruction", MASK_USE_DIV }, \
284 { "identify-revision", MASK_IDENTIFY_REVISION }, \
285 { "warn-passed-structs", MASK_WARN_PASS_STRUCT }, \
286 { "optimize-arg-area", MASK_OPTIMIZE_ARG_AREA }, \
287 { "no-optimize-arg-area", -MASK_OPTIMIZE_ARG_AREA }, \
289 /* Default switches */ \
290 { "", TARGET_DEFAULT }, \
293 /* Redefined in m88kdgux.h. */
294 #define SUBTARGET_SWITCHES
296 /* Macro to define table for command options with values. */
298 #define TARGET_OPTIONS { { "short-data-", &m88k_short_data } }
300 /* Do any checking or such that is needed after processing the -m switches. */
302 #define OVERRIDE_OPTIONS \
306 if ((target_flags & MASK_88000) == 0) \
307 target_flags |= CPU_DEFAULT; \
309 m88k_cpu = (TARGET_88000 ? CPU_M88000 \
310 : (TARGET_88100 ? CPU_M88100 : CPU_M88110)); \
312 if (TARGET_BIG_PIC) \
315 if ((target_flags & MASK_EITHER_LARGE_SHIFT) == MASK_EITHER_LARGE_SHIFT) \
316 error ("-mtrap-large-shift and -mhandle-large-shift are incompatible");\
318 if (VERSION_0300_SYNTAX) \
320 for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) \
322 m88k_pound_sign = "#"; \
325 if (m88k_short_data) \
327 char *p = m88k_short_data; \
329 if (*p >= '0' && *p <= '9') \
333 error ("Invalid option `-mshort-data-%s'", m88k_short_data); \
336 m88k_gp_threshold = atoi (m88k_short_data); \
338 error ("-mshort-data-%s and PIC are incompatible", m88k_short_data); \
342 /*** Storage Layout ***/
344 /* Sizes in bits of the various types. */
345 #define CHAR_TYPE_SIZE 8
346 #define SHORT_TYPE_SIZE 16
347 #define INT_TYPE_SIZE 32
348 #define LONG_TYPE_SIZE 32
349 #define LONG_LONG_TYPE_SIZE 64
350 #define FLOAT_TYPE_SIZE 32
351 #define DOUBLE_TYPE_SIZE 64
352 #define LONG_DOUBLE_TYPE_SIZE 64
354 /* Define this if most significant bit is lowest numbered
355 in instructions that operate on numbered bit-fields.
356 Somewhat arbitrary. It matches the bit field patterns. */
357 #define BITS_BIG_ENDIAN 1
359 /* Define this if most significant byte of a word is the lowest numbered.
360 That is true on the m88000. */
361 #define BYTES_BIG_ENDIAN 1
363 /* Define this if most significant word of a multiword number is the lowest
365 For the m88000 we can decide arbitrarily since there are no machine
366 instructions for them. */
367 #define WORDS_BIG_ENDIAN 1
369 /* Number of bits in an addressable storage unit */
370 #define BITS_PER_UNIT 8
372 /* Width in bits of a "word", which is the contents of a machine register.
373 Note that this is not necessarily the width of data type `int';
374 if using 16-bit ints on a 68000, this would still be 32.
375 But on a machine with 16-bit registers, this would be 16. */
376 #define BITS_PER_WORD 32
378 /* Width of a word, in units (bytes). */
379 #define UNITS_PER_WORD 4
381 /* Width in bits of a pointer.
382 See also the macro `Pmode' defined below. */
383 #define POINTER_SIZE 32
385 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
386 #define PARM_BOUNDARY 32
388 /* Largest alignment for stack parameters (if greater than PARM_BOUNDARY). */
389 #define MAX_PARM_BOUNDARY 64
391 /* Boundary (in *bits*) on which stack pointer should be aligned. */
392 #define STACK_BOUNDARY 128
394 /* Allocation boundary (in *bits*) for the code of a function. On the
395 m88100, it is desirable to align to a cache line. However, SVR3 targets
396 only provided 8 byte alignment. The m88110 cache is small, so align
397 to an 8 byte boundary. Pack code tightly when compiling crtstuff.c. */
398 #define FUNCTION_BOUNDARY (flag_inhibit_size_directive ? 32 : \
399 (TARGET_88100 && TARGET_SVR4 ? 128 : 64))
401 /* No data type wants to be aligned rounder than this. */
402 #define BIGGEST_ALIGNMENT 64
404 /* Make strings word-aligned so strcpy from constants will be faster. */
405 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
406 (TREE_CODE (EXP) == STRING_CST \
407 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
409 /* Make arrays of chars word-aligned for the same reasons. */
410 #define DATA_ALIGNMENT(TYPE, ALIGN) \
411 (TREE_CODE (TYPE) == ARRAY_TYPE \
412 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
413 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
415 /* Alignment of field after `int : 0' in a structure.
416 Ignored with PCC_BITFIELD_TYPE_MATTERS. */
417 /* #define EMPTY_FIELD_BOUNDARY 8 */
419 /* Every structure's size must be a multiple of this. */
420 #define STRUCTURE_SIZE_BOUNDARY 8
422 /* Set this nonzero if move instructions will actually fail to work
423 when given unaligned data. */
424 #define STRICT_ALIGNMENT 1
426 /* A bitfield declared as `int' forces `int' alignment for the struct. */
427 #define PCC_BITFIELD_TYPE_MATTERS 1
429 /* Maximum size (in bits) to use for the largest integral type that
430 replaces a BLKmode type. */
431 /* #define MAX_FIXED_MODE_SIZE 0 */
433 /* Check a `double' value for validity for a particular machine mode.
434 This is defined to avoid crashes outputting certain constants.
435 Since we output the number in hex, the assembler won't choke on it. */
436 /* #define CHECK_FLOAT_VALUE(MODE,VALUE) */
438 /* A code distinguishing the floating point format of the target machine. */
439 /* #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT */
441 /*** Register Usage ***/
443 /* Number of actual hardware registers.
444 The hardware registers are assigned numbers for the compiler
445 from 0 to just below FIRST_PSEUDO_REGISTER.
446 All registers that the compiler knows about must be given numbers,
447 even those that are not normally considered general registers.
449 The m88100 has a General Register File (GRF) of 32 32-bit registers.
450 The m88110 adds an Extended Register File (XRF) of 32 80-bit registers. */
451 #define FIRST_PSEUDO_REGISTER 64
452 #define FIRST_EXTENDED_REGISTER 32
454 /* General notes on extended registers, their use and misuse.
458 spill area instead of memory.
459 -waste if only used once
461 floating point calculations
462 -probably a waste unless we have run out of general purpose registers
464 freeing up general purpose registers
465 -e.g. may be able to have more loop invariants if floating
466 point is moved into extended registers.
469 I've noticed wasteful moves into and out of extended registers; e.g. a load
470 into x21, then inside a loop a move into r24, then r24 used as input to
471 an fadd. Why not just load into r24 to begin with? Maybe the new cse.c
472 will address this. This wastes a move, but the load,store and move could
473 have been saved had extended registers been used throughout.
474 E.g. in the code following code, if z and xz are placed in extended
475 registers, there is no need to save preserve registers.
477 long c=1,d=1,e=1,f=1,g=1,h=1,i=1,j=1,k;
486 k = b + c + d + e + f + g + h + a + i + j++;
490 printf("k= %d; z=%f;\n", k, z);
493 I've found that it is possible to change the constraints (putting * before
494 the 'r' constraints int the fadd.ddd instruction) and get the entire
495 addition and store to go into extended registers. However, this also
496 forces simple addition and return of floating point arguments to a
497 function into extended registers. Not the correct solution.
499 Found the following note in local-alloc.c which may explain why I can't
500 get both registers to be in extended registers since two are allocated in
501 local-alloc and one in global-alloc. Doesn't explain (I don't believe)
502 why an extended register is used instead of just using the preserve
506 We have provision to exempt registers, even when they are contained
507 within the block, that can be tied to others that are not contained in it.
508 This is so that global_alloc could process them both and tie them then.
509 But this is currently disabled since tying in global_alloc is not
512 The explanation of why the preserved register is not used is as follows,
513 I believe. The registers are being allocated in order. Tying is not
514 done so efficiently, so when it comes time to do the first allocation,
515 there are no registers left to use without spilling except extended
516 registers. Then when the next pseudo register needs a hard reg, there
517 are still no registers to be had for free, but this one must be a GRF
518 reg instead of an extended reg, so a preserve register is spilled. Thus
519 the move from extended to GRF is necessitated. I do not believe this can
520 be 'fixed' through the config/*m88k* files.
522 gcc seems to sometimes make worse use of register allocation -- not counting
523 moves -- whenever extended registers are present. For example in the
524 whetstone, the simple for loop (slightly modified)
525 for(i = 1; i <= n1; i++)
527 x1 = (x1 + x2 + x3 - x4) * t;
528 x2 = (x1 + x2 - x3 + x4) * t;
529 x3 = (x1 - x2 + x3 + x4) * t;
530 x4 = (x1 + x2 + x3 + x4) * t;
532 in general loads the high bits of the addresses of x2-x4 and i into registers
533 outside the loop. Whenever extended registers are used, it loads all of
534 these inside the loop. My conjecture is that since the 88110 has so many
535 registers, and gcc makes no distinction at this point -- just that they are
536 not fixed, that in loop.c it believes it can expect a number of registers
537 to be available. Then it allocates 'too many' in local-alloc which causes
538 problems later. 'Too many' are allocated because a large portion of the
539 registers are extended registers and cannot be used for certain purposes
540 ( e.g. hold the address of a variable). When this loop is compiled on its
541 own, the problem does not occur. I don't know the solution yet, though it
542 is probably in the base sources. Possibly a different way to calculate
545 /* 1 for registers that have pervasive standard uses and are not available
546 for the register allocator. Registers r14-r25 and x22-x29 are expected
547 to be preserved across function calls.
549 On the 88000, the standard uses of the General Register File (GRF) are:
550 Reg 0 = Pseudo argument pointer (hardware fixed to 0).
551 Reg 1 = Subroutine return pointer (hardware).
552 Reg 2-9 = Parameter registers (OCS).
553 Reg 10 = OCS reserved temporary.
554 Reg 11 = Static link if needed [OCS reserved temporary].
555 Reg 12 = Address of structure return (OCS).
556 Reg 13 = OCS reserved temporary.
557 Reg 14-25 = Preserved register set.
558 Reg 26-29 = Reserved by OCS and ABI.
559 Reg 30 = Frame pointer (Common use).
560 Reg 31 = Stack pointer.
562 The following follows the current 88open UCS specification for the
563 Extended Register File (XRF):
564 Reg 32 = x0 Always equal to zero
565 Reg 33-53 = x1-x21 Temporary registers (Caller Save)
566 Reg 54-61 = x22-x29 Preserver registers (Callee Save)
567 Reg 62-63 = x30-x31 Reserved for future ABI use.
569 Note: The current 88110 extended register mapping is subject to change.
570 The bias towards caller-save registers is based on the
571 presumption that memory traffic can potentially be reduced by
572 allowing the "caller" to save only that part of the register
573 which is actually being used. (i.e. don't do a st.x if a st.d
574 is sufficient). Also, in scientific code (a.k.a. Fortran), the
575 large number of variables defined in common blocks may require
576 that almost all registers be saved across calls anyway. */
578 #define FIXED_REGISTERS \
579 {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
580 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
581 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
582 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1}
584 /* 1 for registers not available across function calls.
585 These must include the FIXED_REGISTERS and also any
586 registers that can be used without being saved.
587 The latter must include the registers where values are returned
588 and the register where structure-value addresses are passed.
589 Aside from that, you can include as many other registers as you like. */
591 #define CALL_USED_REGISTERS \
592 {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, \
593 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
594 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
595 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1}
597 /* Macro to conditionally modify fixed_regs/call_used_regs. */
598 #define CONDITIONAL_REGISTER_USAGE \
600 if (! TARGET_88110) \
603 for (i = FIRST_EXTENDED_REGISTER; i < FIRST_PSEUDO_REGISTER; i++) \
606 call_used_regs[i] = 1; \
611 /* Current hack to deal with -fpic -O2 problems. */ \
612 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
613 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
614 global_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
618 /* These interfaces that don't apply to the m88000. */
619 /* OVERLAPPING_REGNO_P(REGNO) 0 */
620 /* INSN_CLOBBERS_REGNO_P(INSN, REGNO) 0 */
621 /* PRESERVE_DEATH_INFO_REGNO_P(REGNO) 0 */
623 /* Return number of consecutive hard regs needed starting at reg REGNO
624 to hold something of mode MODE.
625 This is ordinarily the length in words of a value of mode MODE
626 but can be less for certain modes in special long registers.
628 On the m88000, GRF registers hold 32-bits and XRF registers hold 80-bits.
629 An XRF register can hold any mode, but two GRF registers are required
631 #define HARD_REGNO_NREGS(REGNO, MODE) \
632 ((REGNO < FIRST_PSEUDO_REGISTER && REGNO >= FIRST_EXTENDED_REGISTER) \
633 ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
635 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
637 For double integers, we never put the value into an odd register so that
638 the operators don't run into the situation where the high part of one of
639 the inputs is the low part of the result register. (It's ok if the output
640 registers are the same as the input registers.) The XRF registers can
641 hold all modes, but only DF and SF modes can be manipulated in these
642 registers. The compiler should be allowed to use these as a fast spill
644 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
645 ((REGNO < FIRST_PSEUDO_REGISTER && REGNO >= FIRST_EXTENDED_REGISTER) \
647 : (((MODE) != DImode && (MODE) != DFmode && (MODE) != DCmode) \
648 || ((REGNO) & 1) == 0))
650 /* Value is 1 if it is a good idea to tie two pseudo registers
651 when one has mode MODE1 and one has mode MODE2.
652 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
653 for any hard reg, then this must be 0 for correct output. */
654 #define MODES_TIEABLE_P(MODE1, MODE2) \
655 (((MODE1) == DFmode || (MODE1) == DCmode || (MODE1) == DImode) \
656 == ((MODE2) == DFmode || (MODE2) == DCmode || (MODE2) == DImode))
658 /* Specify the registers used for certain standard purposes.
659 The values of these macros are register numbers. */
661 /* the m88000 pc isn't overloaded on a register that the compiler knows about. */
662 /* #define PC_REGNUM */
664 /* Register to use for pushing function arguments. */
665 #define STACK_POINTER_REGNUM 31
667 /* Base register for access to local variables of the function. */
668 #define FRAME_POINTER_REGNUM 30
670 /* Base register for access to arguments of the function. */
671 #define ARG_POINTER_REGNUM 0
673 /* Register used in cases where a temporary is known to be safe to use. */
674 #define TEMP_REGNUM 10
676 /* Register in which static-chain is passed to a function. */
677 #define STATIC_CHAIN_REGNUM 11
679 /* Register in which address to store a structure value
680 is passed to a function. */
681 #define STRUCT_VALUE_REGNUM 12
683 /* Register to hold the addressing base for position independent
684 code access to data items. */
685 #define PIC_OFFSET_TABLE_REGNUM 25
687 /* Order in which registers are preferred (most to least). Use temp
688 registers, then param registers top down. Preserve registers are
689 top down to maximize use of double memory ops for register save.
690 The 88open reserved registers (r26-r29 and x30-x31) may commonly be used
691 in most environments with the -fcall-used- or -fcall-saved- options. */
692 #define REG_ALLOC_ORDER \
694 13, 12, 11, 10, 29, 28, 27, 26, \
695 62, 63, 9, 8, 7, 6, 5, 4, \
696 3, 2, 1, 53, 52, 51, 50, 49, \
697 48, 47, 46, 45, 44, 43, 42, 41, \
698 40, 39, 38, 37, 36, 35, 34, 33, \
699 25, 24, 23, 22, 21, 20, 19, 18, \
700 17, 16, 15, 14, 61, 60, 59, 58, \
701 57, 56, 55, 54, 30, 31, 0, 32}
703 /* Order for leaf functions. */
704 #define REG_LEAF_ALLOC_ORDER \
706 9, 8, 7, 6, 13, 12, 11, 10, \
707 29, 28, 27, 26, 62, 63, 5, 4, \
708 3, 2, 0, 53, 52, 51, 50, 49, \
709 48, 47, 46, 45, 44, 43, 42, 41, \
710 40, 39, 38, 37, 36, 35, 34, 33, \
711 25, 24, 23, 22, 21, 20, 19, 18, \
712 17, 16, 15, 14, 61, 60, 59, 58, \
713 57, 56, 55, 54, 30, 31, 1, 32}
715 /* Switch between the leaf and non-leaf orderings. The purpose is to avoid
716 write-over scoreboard delays between caller and callee. */
717 #define ORDER_REGS_FOR_LOCAL_ALLOC \
719 static int leaf[] = REG_LEAF_ALLOC_ORDER; \
720 static int nonleaf[] = REG_ALLOC_ORDER; \
722 bcopy (regs_ever_live[1] ? nonleaf : leaf, reg_alloc_order, \
723 FIRST_PSEUDO_REGISTER * sizeof (int)); \
726 /*** Register Classes ***/
728 /* Define the classes of registers for register constraints in the
729 machine description. Also define ranges of constants.
731 One of the classes must always be named ALL_REGS and include all hard regs.
732 If there is more than one class, another class must be named NO_REGS
733 and contain no registers.
735 The name GENERAL_REGS must be the name of a class (or an alias for
736 another name such as ALL_REGS). This is the class of registers
737 that is allowed by "g" or "r" in a register constraint.
738 Also, registers outside this class are allocated only when
739 instructions express preferences for them.
741 The classes must be numbered in nondecreasing order; that is,
742 a larger-numbered class must never be contained completely
743 in a smaller-numbered class.
745 For any two classes, it is very desirable that there be another
746 class that represents their union. */
748 /* The m88000 hardware has two kinds of registers. In addition, we denote
749 the arg pointer as a separate class. */
751 enum reg_class { NO_REGS, AP_REG, XRF_REGS, GENERAL_REGS, AGRF_REGS,
752 XGRF_REGS, ALL_REGS, LIM_REG_CLASSES };
754 #define N_REG_CLASSES (int) LIM_REG_CLASSES
756 /* Give names of register classes as strings for dump file. */
757 #define REG_CLASS_NAMES {"NO_REGS", "AP_REG", "XRF_REGS", "GENERAL_REGS", \
758 "AGRF_REGS", "XGRF_REGS", "ALL_REGS" }
760 /* Define which registers fit in which classes.
761 This is an initializer for a vector of HARD_REG_SET
762 of length N_REG_CLASSES. */
763 #define REG_CLASS_CONTENTS {{0x00000000, 0x00000000}, \
764 {0x00000001, 0x00000000}, \
765 {0x00000000, 0xffffffff}, \
766 {0xfffffffe, 0x00000000}, \
767 {0xffffffff, 0x00000000}, \
768 {0xfffffffe, 0xffffffff}, \
769 {0xffffffff, 0xffffffff}}
771 /* The same information, inverted:
772 Return the class number of the smallest class containing
773 reg number REGNO. This could be a conditional expression
774 or could index an array. */
775 #define REGNO_REG_CLASS(REGNO) \
776 ((REGNO) ? ((REGNO < 32) ? GENERAL_REGS : XRF_REGS) : AP_REG)
778 /* The class value for index registers, and the one for base regs. */
779 #define BASE_REG_CLASS AGRF_REGS
780 #define INDEX_REG_CLASS GENERAL_REGS
782 /* Get reg_class from a letter such as appears in the machine description.
783 For the 88000, the following class/letter is defined for the XRF:
784 x - Extended register file */
785 #define REG_CLASS_FROM_LETTER(C) \
786 (((C) == 'x') ? XRF_REGS : NO_REGS)
788 /* Macros to check register numbers against specific register classes.
789 These assume that REGNO is a hard or pseudo reg number.
790 They give nonzero only if REGNO is a hard reg of the suitable class
791 or a pseudo reg currently allocated to a suitable hard reg.
792 Since they use reg_renumber, they are safe only once reg_renumber
793 has been allocated, which happens in local-alloc.c. */
794 #define REGNO_OK_FOR_BASE_P(REGNO) \
795 ((REGNO) < FIRST_EXTENDED_REGISTER \
796 || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER)
797 #define REGNO_OK_FOR_INDEX_P(REGNO) \
798 (((REGNO) && (REGNO) < FIRST_EXTENDED_REGISTER) \
799 || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER)
801 /* Given an rtx X being reloaded into a reg required to be
802 in class CLASS, return the class of reg to actually use.
803 In general this is just CLASS; but on some machines
804 in some cases it is preferable to use a more restrictive class.
805 Double constants should be in a register iff they can be made cheaply. */
806 #define PREFERRED_RELOAD_CLASS(X,CLASS) \
807 (CONSTANT_P(X) && (CLASS == XRF_REGS) ? NO_REGS : (CLASS))
809 /* Return the maximum number of consecutive registers
810 needed to represent mode MODE in a register of class CLASS. */
811 #define CLASS_MAX_NREGS(CLASS, MODE) \
812 ((((CLASS) == XRF_REGS) ? 1 \
813 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)))
815 /* Letters in the range `I' through `P' in a register constraint string can
816 be used to stand for particular ranges of immediate operands. The C
817 expression is true iff C is a known letter and VALUE is appropriate for
820 For the m88000, the following constants are used:
821 `I' requires a non-negative 16-bit value.
822 `J' requires a non-positive 16-bit value.
824 `L' requires a constant with only the upper 16-bits set.
825 `M' requires constant values that can be formed with `set'.
826 `N' requires a negative value.
828 `P' requires a non-negative value. */
830 /* Quick tests for certain values. */
831 #define SMALL_INT(X) (SMALL_INTVAL (INTVAL (X)))
832 #define SMALL_INTVAL(I) ((unsigned) (I) < 0x10000)
833 #define ADD_INT(X) (ADD_INTVAL (INTVAL (X)))
834 #define ADD_INTVAL(I) ((unsigned) (I) + 0xffff < 0x1ffff)
835 #define POWER_OF_2(I) ((I) && POWER_OF_2_or_0(I))
836 #define POWER_OF_2_or_0(I) (((I) & ((unsigned)(I) - 1)) == 0)
838 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
839 ((C) == 'I' ? SMALL_INTVAL (VALUE) \
840 : (C) == 'J' ? SMALL_INTVAL (-(VALUE)) \
841 : (C) == 'L' ? ((VALUE) & 0xffff) == 0 \
842 : (C) == 'M' ? integer_ok_for_set (VALUE) \
843 : (C) == 'N' ? (VALUE) < 0 \
844 : (C) == 'O' ? (VALUE) == 0 \
845 : (C) == 'P' ? (VALUE) >= 0 \
848 /* Similar, but for floating constants, and defining letters G and H.
849 Here VALUE is the CONST_DOUBLE rtx itself. For the m88000, the
850 constraints are: `G' requires zero, and `H' requires one or two. */
851 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
852 ((C) == 'G' ? (CONST_DOUBLE_HIGH (VALUE) == 0 \
853 && CONST_DOUBLE_LOW (VALUE) == 0) \
856 /* Letters in the range `Q' through `U' in a register constraint string
857 may be defined in a machine-dependent fashion to stand for arbitrary
860 For the m88k, `Q' handles addresses in a call context. */
862 #define EXTRA_CONSTRAINT(OP, C) \
863 ((C) == 'Q' ? symbolic_address_p (OP) : 0)
865 /*** Describing Stack Layout ***/
867 /* Define this if pushing a word on the stack moves the stack pointer
868 to a smaller address. */
869 #define STACK_GROWS_DOWNWARD
871 /* Define this if the addresses of local variable slots are at negative
872 offsets from the frame pointer. */
873 /* #define FRAME_GROWS_DOWNWARD */
875 /* Offset from the frame pointer to the first local variable slot to be
876 allocated. For the m88k, the debugger wants the return address (r1)
877 stored at location r30+4, and the previous frame pointer stored at
879 #define STARTING_FRAME_OFFSET 8
881 /* If we generate an insn to push BYTES bytes, this says how many the
882 stack pointer really advances by. The m88k has no push instruction. */
883 /* #define PUSH_ROUNDING(BYTES) */
885 /* If defined, the maximum amount of space required for outgoing arguments
886 will be computed and placed into the variable
887 `current_function_outgoing_args_size'. No space will be pushed
888 onto the stack for each call; instead, the function prologue should
889 increase the stack frame size by this amount. */
890 #define ACCUMULATE_OUTGOING_ARGS
892 /* Offset from the stack pointer register to the first location at which
893 outgoing arguments are placed. Use the default value zero. */
894 /* #define STACK_POINTER_OFFSET 0 */
896 /* Offset of first parameter from the argument pointer register value.
897 Using an argument pointer, this is 0 for the m88k. GCC knows
898 how to eliminate the argument pointer references if necessary. */
899 #define FIRST_PARM_OFFSET(FNDECL) 0
901 /* Define this if functions should assume that stack space has been
902 allocated for arguments even when their values are passed in
905 The value of this macro is the size, in bytes, of the area reserved for
906 arguments passed in registers.
908 This space can either be allocated by the caller or be a part of the
909 machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE'
911 #define REG_PARM_STACK_SPACE(FNDECL) 32
913 /* Define this macro if REG_PARM_STACK_SPACE is defined but stack
914 parameters don't skip the area specified by REG_PARM_STACK_SPACE.
915 Normally, when a parameter is not passed in registers, it is placed on
916 the stack beyond the REG_PARM_STACK_SPACE area. Defining this macro
917 suppresses this behavior and causes the parameter to be passed on the
918 stack in its natural location. */
919 #define STACK_PARMS_IN_REG_PARM_AREA
921 /* Define this if it is the responsibility of the caller to allocate the
922 area reserved for arguments passed in registers. If
923 `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect of this
924 macro is to determine whether the space is included in
925 `current_function_outgoing_args_size'. */
926 /* #define OUTGOING_REG_PARM_STACK_SPACE */
928 /* Offset from the stack pointer register to an item dynamically allocated
929 on the stack, e.g., by `alloca'.
931 The default value for this macro is `STACK_POINTER_OFFSET' plus the
932 length of the outgoing arguments. The default is correct for most
933 machines. See `function.c' for details. */
934 /* #define STACK_DYNAMIC_OFFSET(FUNDECL) ... */
936 /* Value is the number of bytes of arguments automatically
937 popped when returning from a subroutine call.
938 FUNTYPE is the data type of the function (as a tree),
939 or for a library call it is an identifier node for the subroutine name.
940 SIZE is the number of bytes of arguments passed on the stack. */
941 #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0
943 /* Define how to find the value returned by a function.
944 VALTYPE is the data type of the value (as a tree).
945 If the precise function being called is known, FUNC is its FUNCTION_DECL;
946 otherwise, FUNC is 0. */
947 #define FUNCTION_VALUE(VALTYPE, FUNC) \
949 TYPE_MODE (VALTYPE) == BLKmode ? SImode : TYPE_MODE (VALTYPE), \
952 /* Define this if it differs from FUNCTION_VALUE. */
953 /* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) ... */
955 /* Disable the promotion of some structures and unions to registers. */
956 #define RETURN_IN_MEMORY(TYPE) \
957 ((TREE_CODE (TYPE) == RECORD_TYPE || TREE_CODE(TYPE) == UNION_TYPE) \
958 && !(TYPE_MODE (TYPE) == SImode \
959 || (TYPE_MODE (TYPE) == BLKmode \
960 && TYPE_ALIGN (TYPE) == BITS_PER_WORD \
961 && int_size_in_bytes (TYPE) == UNITS_PER_WORD)))
963 /* Define how to find the value returned by a library function
964 assuming the value has mode MODE. */
965 #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 2)
967 /* True if N is a possible register number for a function value
968 as seen by the caller. */
969 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2)
971 /* Determine whether a function argument is passed in a register, and
972 which register. See m88k.c. */
973 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
974 m88k_function_arg (CUM, MODE, TYPE, NAMED)
976 /* Define this if it differs from FUNCTION_ARG. */
977 /* #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) ... */
979 /* A C expression for the number of words, at the beginning of an
980 argument, must be put in registers. The value must be zero for
981 arguments that are passed entirely in registers or that are entirely
982 pushed on the stack. */
983 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0)
985 /* A C expression that indicates when an argument must be passed by
986 reference. If nonzero for an argument, a copy of that argument is
987 made in memory and a pointer to the argument is passed instead of the
988 argument itself. The pointer is passed in whatever way is appropriate
989 for passing a pointer to that type. */
990 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) (0)
992 /* A C type for declaring a variable that is used as the first argument
993 of `FUNCTION_ARG' and other related values. It suffices to count
994 the number of words of argument so far. */
995 #define CUMULATIVE_ARGS int
997 /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to a
998 function whose data type is FNTYPE. For a library call, FNTYPE is 0. */
999 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0)
1001 /* A C statement (sans semicolon) to update the summarizer variable
1002 CUM to advance past an argument in the argument list. The values
1003 MODE, TYPE and NAMED describe that argument. Once this is done,
1004 the variable CUM is suitable for analyzing the *following* argument
1005 with `FUNCTION_ARG', etc. (TYPE is null for libcalls where that
1006 information may not be available.) */
1007 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1009 enum machine_mode __mode = (TYPE) ? TYPE_MODE (TYPE) : (MODE); \
1011 && (__mode == DImode || __mode == DFmode \
1012 || ((TYPE) && TYPE_ALIGN (TYPE) > BITS_PER_WORD))) \
1014 CUM += (((__mode != BLKmode) \
1015 ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE)) \
1019 /* True if N is a possible register number for function argument passing.
1020 On the m88000, these are registers 2 through 9. */
1021 #define FUNCTION_ARG_REGNO_P(N) ((N) <= 9 && (N) >= 2)
1023 /* A C expression which determines whether, and in which direction,
1024 to pad out an argument with extra space. The value should be of
1025 type `enum direction': either `upward' to pad above the argument,
1026 `downward' to pad below, or `none' to inhibit padding.
1028 This macro does not control the *amount* of padding; that is always
1029 just enough to reach the next multiple of `FUNCTION_ARG_BOUNDARY'. */
1030 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1031 ((MODE) == BLKmode \
1032 || ((TYPE) && (TREE_CODE (TYPE) == RECORD_TYPE \
1033 || TREE_CODE (TYPE) == UNION_TYPE)) \
1034 ? upward : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY ? downward : none)
1036 /* If defined, a C expression that gives the alignment boundary, in bits,
1037 of an argument with the specified mode and type. If it is not defined,
1038 `PARM_BOUNDARY' is used for all arguments. */
1039 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
1040 (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_SIZE (MODE)) <= PARM_BOUNDARY \
1041 ? PARM_BOUNDARY : 2 * PARM_BOUNDARY)
1043 /* Generate necessary RTL for __builtin_saveregs().
1044 ARGLIST is the argument list; see expr.c. */
1045 #define EXPAND_BUILTIN_SAVEREGS(ARGLIST) m88k_builtin_saveregs (ARGLIST)
1047 /* Generate the assembly code for function entry. */
1048 #define FUNCTION_PROLOGUE(FILE, SIZE) m88k_begin_prologue(FILE, SIZE)
1050 /* Perform special actions at the point where the prologue ends. */
1051 #define FUNCTION_END_PROLOGUE(FILE) m88k_end_prologue(FILE)
1053 /* Output assembler code to FILE to increment profiler label # LABELNO
1054 for profiling a function entry. Redefined in m88kv3.h, m88kv4.h and
1056 #define FUNCTION_PROFILER(FILE, LABELNO) \
1057 output_function_profiler (FILE, LABELNO, "mcount", 1)
1059 /* Output assembler code to FILE to initialize basic-block profiling for
1060 the current module. LABELNO is unique to each instance. */
1061 #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
1062 output_function_block_profiler (FILE, LABELNO)
1064 /* Output assembler code to FILE to increment the count associated with
1065 the basic block number BLOCKNO. */
1066 #define BLOCK_PROFILER(FILE, BLOCKNO) output_block_profiler (FILE, BLOCKNO)
1068 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1069 the stack pointer does not matter. The value is tested only in
1070 functions that have frame pointers.
1071 No definition is equivalent to always zero. */
1072 #define EXIT_IGNORE_STACK (1)
1074 /* Generate the assembly code for function exit. */
1075 #define FUNCTION_EPILOGUE(FILE, SIZE) m88k_end_epilogue(FILE, SIZE)
1077 /* Perform special actions at the point where the epilogue begins. */
1078 #define FUNCTION_BEGIN_EPILOGUE(FILE) m88k_begin_epilogue(FILE)
1080 /* Value should be nonzero if functions must have frame pointers.
1081 Zero means the frame pointer need not be set up (and parms
1082 may be accessed via the stack pointer) in functions that seem suitable.
1083 This is computed in `reload', in reload1.c. */
1084 #define FRAME_POINTER_REQUIRED \
1085 (frame_pointer_needed \
1086 || (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION))
1088 /* Definitions for register eliminations.
1090 We have two registers that can be eliminated on the m88k. First, the
1091 frame pointer register can often be eliminated in favor of the stack
1092 pointer register. Secondly, the argument pointer register can always be
1093 eliminated; it is replaced with either the stack or frame pointer. */
1095 /* This is an array of structures. Each structure initializes one pair
1096 of eliminable registers. The "from" register number is given first,
1097 followed by "to". Eliminations of the same "from" register are listed
1098 in order of preference. */
1099 #define ELIMINABLE_REGS \
1100 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1101 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
1102 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
1104 /* Given FROM and TO register numbers, say whether this elimination
1106 #define CAN_ELIMINATE(FROM, TO) \
1107 (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
1109 /* Define the offset between two registers, one to be eliminated, and the other
1110 its replacement, at the start of a routine. */
1111 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1112 { m88k_layout_frame (); \
1113 if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
1114 (OFFSET) = m88k_fp_offset; \
1115 else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \
1116 (OFFSET) = m88k_stack_size - m88k_fp_offset; \
1117 else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
1118 (OFFSET) = m88k_stack_size; \
1123 /*** Trampolines for Nested Functions ***/
1125 /* Output assembler code for a block containing the constant parts
1126 of a trampoline, leaving space for the variable parts.
1128 This block is placed on the stack and filled in. It is aligned
1129 0 mod 128 and those portions that are executed are constant.
1130 This should work for instruction caches that have cache lines up
1131 to the aligned amount (128 is arbitrary), provided no other code
1132 producer is attempting to play the same game. This of course is
1133 in violation of any number of 88open standards. */
1135 #define TRAMPOLINE_TEMPLATE(FILE) \
1137 /* Save the return address (r1) in the static chain reg (r11). */ \
1138 fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[11], reg_names[1]); \
1139 /* Locate this block; transfer to the next instruction. */ \
1140 fprintf (FILE, "\tbsr\t 1\n"); \
1141 /* Save r10; use it as the relative pointer; restore r1. */ \
1142 fprintf (FILE, "\tst\t %s,%s,24\n", reg_names[10], reg_names[1]); \
1143 fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[10], reg_names[1]); \
1144 fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[1], reg_names[11]); \
1145 /* Load the function's address and go there. */ \
1146 fprintf (FILE, "\tld\t %s,%s,32\n", reg_names[11], reg_names[10]); \
1147 fprintf (FILE, "\tjmp.n\t %s\n", reg_names[11]); \
1148 /* Restore r10 and load the static chain register. */ \
1149 fprintf (FILE, "\tld.d\t %s,%s,24\n", reg_names[10], reg_names[10]); \
1150 /* Storage: r10 save area, static chain, function address. */ \
1151 ASM_OUTPUT_INT (FILE, const0_rtx); \
1152 ASM_OUTPUT_INT (FILE, const0_rtx); \
1153 ASM_OUTPUT_INT (FILE, const0_rtx); \
1156 /* Length in units of the trampoline for entering a nested function.
1157 This is really two components. The first 32 bytes are fixed and
1158 must be copied; the last 12 bytes are just storage that's filled
1159 in later. So for allocation purposes, it's 32+12 bytes, but for
1160 initialization purposes, it's 32 bytes. */
1162 #define TRAMPOLINE_SIZE (32+12)
1164 /* Alignment required for a trampoline. 128 is used to find the
1165 beginning of a line in the instruction cache and to allow for
1166 instruction cache lines of up to 128 bytes. */
1168 #define TRAMPOLINE_ALIGNMENT 128
1170 /* Emit RTL insns to initialize the variable parts of a trampoline.
1171 FNADDR is an RTX for the address of the function's pure code.
1172 CXT is an RTX for the static chain value for the function. */
1174 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1176 emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 40)), FNADDR); \
1177 emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 36)), CXT); \
1180 /*** Library Subroutine Names ***/
1182 /* Define this macro if GNU CC should generate calls to the System V
1183 (and ANSI C) library functions `memcpy' and `memset' rather than
1184 the BSD functions `bcopy' and `bzero'. */
1185 #define TARGET_MEM_FUNCTIONS
1187 /*** Addressing Modes ***/
1189 /* #define HAVE_POST_INCREMENT */
1190 /* #define HAVE_POST_DECREMENT */
1192 /* #define HAVE_PRE_DECREMENT */
1193 /* #define HAVE_PRE_INCREMENT */
1195 /* Recognize any constant value that is a valid address. */
1196 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X))
1198 /* Maximum number of registers that can appear in a valid memory address. */
1199 #define MAX_REGS_PER_ADDRESS 2
1201 /* The condition for memory shift insns. */
1202 #define SCALED_ADDRESS_P(ADDR) \
1203 (GET_CODE (ADDR) == PLUS \
1204 && (GET_CODE (XEXP (ADDR, 0)) == MULT \
1205 || GET_CODE (XEXP (ADDR, 1)) == MULT))
1207 /* Can the reference to X be made short? */
1208 #define SHORT_ADDRESS_P(X,TEMP) \
1209 ((TEMP) = (GET_CODE (X) == CONST ? get_related_value (X) : X), \
1210 ((TEMP) && GET_CODE (TEMP) == SYMBOL_REF && SYMBOL_REF_FLAG (TEMP)))
1212 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
1213 that is a valid memory address for an instruction.
1214 The MODE argument is the machine mode for the MEM expression
1215 that wants to use this address.
1217 On the m88000, a legitimate address has the form REG, REG+REG,
1218 REG+SMALLINT, REG+(REG*modesize) (REG[REG]), or SMALLINT.
1220 The register elimination process should deal with the argument
1221 pointer and frame pointer changing to REG+SMALLINT. */
1223 #define LEGITIMATE_INDEX_P(X, MODE) \
1224 ((GET_CODE (X) == CONST_INT \
1227 && REG_OK_FOR_INDEX_P (X)) \
1228 || (GET_CODE (X) == MULT \
1229 && REG_P (XEXP (X, 0)) \
1230 && REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
1231 && GET_CODE (XEXP (X, 1)) == CONST_INT \
1232 && INTVAL (XEXP (X, 1)) == GET_MODE_SIZE (MODE)))
1234 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1239 if (REG_OK_FOR_BASE_P (X)) \
1242 else if (GET_CODE (X) == PLUS) \
1244 register rtx _x0 = XEXP (X, 0); \
1245 register rtx _x1 = XEXP (X, 1); \
1247 && _x0 == pic_offset_table_rtx \
1250 : (GET_CODE (_x1) == SYMBOL_REF \
1251 || GET_CODE (_x1) == LABEL_REF))) \
1253 && (REG_OK_FOR_BASE_P (_x0) \
1254 && LEGITIMATE_INDEX_P (_x1, MODE))) \
1256 && (REG_OK_FOR_BASE_P (_x1) \
1257 && LEGITIMATE_INDEX_P (_x0, MODE)))) \
1260 else if (GET_CODE (X) == LO_SUM) \
1262 register rtx _x0 = XEXP (X, 0); \
1263 register rtx _x1 = XEXP (X, 1); \
1265 && REG_OK_FOR_BASE_P (_x0)) \
1266 || (GET_CODE (_x0) == SUBREG \
1267 && REG_P (SUBREG_REG (_x0)) \
1268 && REG_OK_FOR_BASE_P (SUBREG_REG (_x0)))) \
1269 && CONSTANT_P (_x1)) \
1272 else if (GET_CODE (X) == CONST_INT \
1275 else if (SHORT_ADDRESS_P (X, _x)) \
1279 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
1280 and check its validity for a certain class.
1281 We have two alternate definitions for each of them.
1282 The usual definition accepts all pseudo regs; the other rejects
1283 them unless they have been allocated suitable hard regs.
1284 The symbol REG_OK_STRICT causes the latter definition to be used.
1286 Most source files want to accept pseudo regs in the hope that
1287 they will get allocated to the class that the insn wants them to be in.
1288 Source files for reload pass need to be strict.
1289 After reload, it makes no difference, since pseudo regs have
1290 been eliminated by then. */
1292 #ifndef REG_OK_STRICT
1294 /* Nonzero if X is a hard reg that can be used as an index
1295 or if it is a pseudo reg. Not the argument pointer. */
1296 #define REG_OK_FOR_INDEX_P(X) (X)
1297 /* Nonzero if X is a hard reg that can be used as a base reg
1298 or if it is a pseudo reg. */
1299 #define REG_OK_FOR_BASE_P(X) (1)
1303 /* Nonzero if X is a hard reg that can be used as an index. */
1304 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1305 /* Nonzero if X is a hard reg that can be used as a base reg. */
1306 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1310 /* Try machine-dependent ways of modifying an illegitimate address
1311 to be legitimate. If we find one, return the new, valid address.
1312 This macro is used in only one place: `memory_address' in explow.c.
1314 OLDX is the address as it was before break_out_memory_refs was called.
1315 In some cases it is useful to look at this to decide what needs to be done.
1317 MODE and WIN are passed so that this macro can use
1318 GO_IF_LEGITIMATE_ADDRESS.
1320 It is always safe for this macro to do nothing. It exists to recognize
1321 opportunities to optimize the output. */
1323 /* On the m88000, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */
1325 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
1327 if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \
1328 (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
1329 copy_to_mode_reg (SImode, XEXP (X, 1))); \
1330 if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
1331 (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
1332 copy_to_mode_reg (SImode, XEXP (X, 0))); \
1333 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \
1334 (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
1335 force_operand (XEXP (X, 0), 0)); \
1336 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \
1337 (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
1338 force_operand (XEXP (X, 1), 0)); \
1339 if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
1340 || GET_CODE (X) == LABEL_REF) \
1341 (X) = legitimize_address (flag_pic, X, gen_reg_rtx (Pmode)); \
1342 if (memory_address_p (MODE, X)) \
1345 /* Go to LABEL if ADDR (a legitimate address expression)
1346 has an effect that depends on the machine mode it is used for.
1347 On the the m88000 this is never true. */
1349 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
1351 /* Nonzero if the constant value X is a legitimate general operand.
1352 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
1353 #define LEGITIMATE_CONSTANT_P(X) (1)
1355 /*** Condition Code Information ***/
1357 /* C code for a data type which is used for declaring the `mdep'
1358 component of `cc_status'. It defaults to `int'. */
1359 /* #define CC_STATUS_MDEP int */
1361 /* A C expression to initialize the `mdep' field to "empty". */
1362 /* #define CC_STATUS_MDEP_INIT (cc_status.mdep = 0) */
1364 /* Macro to zap the normal portions of CC_STATUS, but leave the
1365 machine dependent parts (ie, literal synthesis) alone. */
1366 /* #define CC_STATUS_INIT_NO_MDEP \
1367 (cc_status.flags = 0, cc_status.value1 = 0, cc_status.value2 = 0) */
1369 /* When using a register to hold the condition codes, the cc_status
1370 mechanism cannot be used. */
1371 #define NOTICE_UPDATE_CC(EXP, INSN) (0)
1373 /*** Miscellaneous Parameters ***/
1375 /* Define the codes that are matched by predicates in m88k.c. */
1376 #define PREDICATE_CODES \
1377 {"move_operand", {SUBREG, REG, CONST_INT, LO_SUM, MEM}}, \
1378 {"call_address_operand", {SUBREG, REG, SYMBOL_REF, LABEL_REF, CONST}}, \
1379 {"arith_operand", {SUBREG, REG, CONST_INT}}, \
1380 {"arith5_operand", {SUBREG, REG, CONST_INT}}, \
1381 {"arith32_operand", {SUBREG, REG, CONST_INT}}, \
1382 {"arith64_operand", {SUBREG, REG, CONST_INT}}, \
1383 {"int5_operand", {CONST_INT}}, \
1384 {"int32_operand", {CONST_INT}}, \
1385 {"add_operand", {SUBREG, REG, CONST_INT}}, \
1386 {"reg_or_bbx_mask_operand", {SUBREG, REG, CONST_INT}}, \
1387 {"real_or_0_operand", {SUBREG, REG, CONST_DOUBLE}}, \
1388 {"relop", {EQ, NE, LT, LE, GE, GT, LTU, LEU, GEU, GTU}}, \
1389 {"relop_no_unsigned", {EQ, NE, LT, LE, GE, GT}}, \
1390 {"equality_op", {EQ, NE}}, \
1391 {"pc_or_label_ref", {PC, LABEL_REF}},
1393 /* The case table contains either words or branch instructions. This says
1394 which. We always claim that the vector is PC-relative. It is position
1395 independent when -fpic is used. */
1396 #define CASE_VECTOR_INSNS (TARGET_88100 || flag_pic)
1398 /* An alias for a machine mode name. This is the machine mode that
1399 elements of a jump-table should have. */
1400 #define CASE_VECTOR_MODE SImode
1402 /* Define this macro if jump-tables should contain relative addresses. */
1403 #define CASE_VECTOR_PC_RELATIVE
1405 /* Define this if control falls through a `case' insn when the index
1406 value is out of range. This means the specified default-label is
1407 actually ignored by the `case' insn proper. */
1408 /* #define CASE_DROPS_THROUGH */
1410 /* Define this to be the smallest number of different values for which it
1411 is best to use a jump-table instead of a tree of conditional branches.
1412 The default is 4 for machines with a casesi instruction and 5 otherwise.
1413 The best 88110 number is around 7, though the exact number isn't yet
1414 known. A third alternative for the 88110 is to use a binary tree of
1415 bb1 instructions on bits 2/1/0 if the range is dense. This may not
1416 win very much though. */
1417 #define CASE_VALUES_THRESHOLD (TARGET_88100 ? 4 : 7)
1419 /* Specify the tree operation to be used to convert reals to integers. */
1420 #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
1422 /* This is the kind of divide that is easiest to do in the general case. */
1423 #define EASY_DIV_EXPR TRUNC_DIV_EXPR
1425 /* Define this as 1 if `char' should by default be signed; else as 0. */
1426 #define DEFAULT_SIGNED_CHAR 1
1428 /* The 88open ABI says size_t is unsigned int. */
1429 #define SIZE_TYPE "unsigned int"
1431 /* Allow and ignore #sccs directives */
1432 #define SCCS_DIRECTIVE
1434 /* Handle #pragma pack and sometimes #pragma weak. */
1435 #define HANDLE_SYSV_PRAGMA
1437 /* Tell when to handle #pragma weak. This is only done for V.4. */
1438 #define HANDLE_PRAGMA_WEAK TARGET_SVR4
1440 /* Max number of bytes we can move from memory to memory
1441 in one reasonably fast instruction. */
1444 /* Define if normal loads of shorter-than-word items from memory clears
1445 the rest of the bigs in the register. */
1446 #define BYTE_LOADS_ZERO_EXTEND
1448 /* Zero if access to memory by bytes is faster. */
1449 #define SLOW_BYTE_ACCESS 1
1451 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1452 is done just by pretending it is already truncated. */
1453 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1455 /* Define this if addresses of constant functions
1456 shouldn't be put through pseudo regs where they can be cse'd.
1457 Desirable on machines where ordinary constants are expensive
1458 but a CALL with constant address is cheap. */
1459 #define NO_FUNCTION_CSE
1461 /* Define this macro if an argument declared as `char' or
1462 `short' in a prototype should actually be passed as an
1463 `int'. In addition to avoiding errors in certain cases of
1464 mismatch, it also makes for better code on certain machines. */
1465 #define PROMOTE_PROTOTYPES
1467 /* Define this macro if a float function always returns float
1468 (even in traditional mode). Redefined in m88kluna.h. */
1469 #define TRADITIONAL_RETURN_FLOAT
1471 /* We assume that the store-condition-codes instructions store 0 for false
1472 and some other value for true. This is the value stored for true. */
1473 #define STORE_FLAG_VALUE -1
1475 /* Specify the machine mode that pointers have.
1476 After generation of rtl, the compiler makes no further distinction
1477 between pointers and any other objects of this machine mode. */
1478 #define Pmode SImode
1480 /* A function address in a call instruction
1481 is a word address (for indexing purposes)
1482 so give the MEM rtx word mode. */
1483 #define FUNCTION_MODE SImode
1485 /* A barrier will be aligned so account for the possible expansion. */
1486 #define ADJUST_INSN_LENGTH(INSN, LENGTH) \
1487 if (GET_CODE (INSN) == BARRIER) \
1490 /* Compute the cost of computing a constant rtl expression RTX
1491 whose rtx-code is CODE. The body of this macro is a portion
1492 of a switch statement. If the code is computed here,
1493 return it with a return statement. Otherwise, break from the switch.
1495 We assume that any 16 bit integer can easily be recreated, so we
1496 indicate 0 cost, in an attempt to get GCC not to optimize things
1497 like comparison against a constant.
1499 The cost of CONST_DOUBLE is zero (if it can be placed in an insn, it
1500 is as good as a register; since it can't be placed in any insn, it
1501 won't do anything in cse, but it will cause expand_binop to pass the
1502 constant to the define_expands). */
1503 #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
1505 if (SMALL_INT (RTX)) \
1507 else if (SMALL_INTVAL (- INTVAL (RTX))) \
1509 else if (classify_integer (SImode, INTVAL (RTX)) != m88k_oru_or) \
1518 return (flag_pic == 2) ? 11 : 8; \
1520 case CONST_DOUBLE: \
1523 /* Provide the costs of an addressing mode that contains ADDR.
1524 If ADDR is not a valid address, its cost is irrelevant.
1525 REG+REG is made slightly more expensive because it might keep
1526 a register live for longer than we might like. */
1527 #define ADDRESS_COST(ADDR) \
1528 (GET_CODE (ADDR) == REG ? 1 : \
1529 GET_CODE (ADDR) == LO_SUM ? 1 : \
1530 GET_CODE (ADDR) == HIGH ? 2 : \
1531 GET_CODE (ADDR) == MULT ? 1 : \
1532 GET_CODE (ADDR) != PLUS ? 4 : \
1533 (REG_P (XEXP (ADDR, 0)) && REG_P (XEXP (ADDR, 1))) ? 2 : 1)
1535 /* Provide the costs of a rtl expression. This is in the body of a
1537 #define RTX_COSTS(X,CODE,OUTER_CODE) \
1539 return COSTS_N_INSNS (2); \
1541 return COSTS_N_INSNS (3); \
1546 return COSTS_N_INSNS (38);
1548 /* A C expressions returning the cost of moving data of MODE from a register
1549 to or from memory. This is more costly than between registers. */
1550 #define MEMORY_MOVE_COST(MODE) 4
1552 /* Provide the cost of a branch. Exact meaning under development. */
1553 #define BRANCH_COST (TARGET_88100 ? 1 : 2)
1555 /* A C statement (sans semicolon) to update the integer variable COST
1556 based on the relationship between INSN that is dependent on
1557 DEP_INSN through the dependence LINK. The default is to make no
1558 adjustment to COST. On the m88k, ignore the cost of anti- and
1559 output-dependencies. On the m88100, a store can issue two cycles
1560 before the value (not the address) has finished computing. */
1561 #define ADJUST_COST(INSN,LINK,DEP_INSN,COST) \
1563 if (REG_NOTE_KIND (LINK) != 0) \
1564 (COST) = 0; /* Anti or output dependence. */ \
1565 else if (! TARGET_88100 \
1566 && recog_memoized (INSN) >= 0 \
1567 && get_attr_type (INSN) == TYPE_STORE \
1568 && SET_SRC (PATTERN (INSN)) == SET_DEST (PATTERN (DEP_INSN))) \
1569 (COST) -= 4; /* 88110 store reservation station. */ \
1572 /* Define this to be nonzero if the character `$' should be allowed
1573 by default in identifier names. */
1574 #define DOLLARS_IN_IDENTIFIERS 1
1576 /* Do not break .stabs pseudos into continuations. */
1577 #define DBX_CONTIN_LENGTH 0
1579 /*** Output of Assembler Code ***/
1581 /* Control the assembler format that we output. */
1583 /* Which assembler syntax. Redefined in m88kdgux.h. */
1584 #define VERSION_0300_SYNTAX TARGET_SVR4
1586 /* Allow pseudo-ops to be overridden. Override these in svr[34].h. */
1588 #undef ASCII_DATA_ASM_OP
1589 #undef CONST_SECTION_ASM_OP
1590 #undef CTORS_SECTION_ASM_OP
1591 #undef DTORS_SECTION_ASM_OP
1592 #undef INIT_SECTION_ASM_OP
1593 #undef FINI_SECTION_ASM_OP
1599 #undef COMMON_ASM_OP
1603 /* These are used in varasm.c as well. */
1604 #define TEXT_SECTION_ASM_OP "text"
1605 #define DATA_SECTION_ASM_OP "data"
1607 /* Other sections. */
1608 #define CONST_SECTION_ASM_OP (VERSION_0300_SYNTAX \
1609 ? "section\t .rodata,\"a\"" \
1610 : "section\t .rodata,\"x\"")
1611 #define TDESC_SECTION_ASM_OP (VERSION_0300_SYNTAX \
1612 ? "section\t .tdesc,\"a\"" \
1613 : "section\t .tdesc,\"x\"")
1615 /* These must be constant strings for crtstuff.c. */
1616 #define CTORS_SECTION_ASM_OP "section\t .ctors,\"d\""
1617 #define DTORS_SECTION_ASM_OP "section\t .dtors,\"d\""
1618 #define INIT_SECTION_ASM_OP "section\t .init,\"x\""
1619 #define FINI_SECTION_ASM_OP "section\t .fini,\"x\""
1621 /* These are pretty much common to all assemblers. */
1622 #define IDENT_ASM_OP "ident"
1623 #define FILE_ASM_OP "file"
1624 #define SECTION_ASM_OP "section"
1625 #define SET_ASM_OP "def"
1626 #define GLOBAL_ASM_OP "global"
1627 #define ALIGN_ASM_OP "align"
1628 #define SKIP_ASM_OP "zero"
1629 #define COMMON_ASM_OP "comm"
1630 #define BSS_ASM_OP "bss"
1631 #define FLOAT_ASM_OP "float"
1632 #define DOUBLE_ASM_OP "double"
1633 #define INT_ASM_OP "word"
1634 #define ASM_LONG INT_ASM_OP
1635 #define SHORT_ASM_OP "half"
1636 #define CHAR_ASM_OP "byte"
1637 #define ASCII_DATA_ASM_OP "string"
1639 /* These are particular to the global pool optimization. */
1640 #define SBSS_ASM_OP "sbss"
1641 #define SCOMM_ASM_OP "scomm"
1642 #define SDATA_SECTION_ASM_OP "sdata"
1644 /* These are specific to PIC. */
1645 #define TYPE_ASM_OP "type"
1646 #define SIZE_ASM_OP "size"
1647 #define WEAK_ASM_OP "weak"
1648 #ifndef AS_BUG_POUND_TYPE /* Faulty assemblers require @ rather than #. */
1649 #undef TYPE_OPERAND_FMT
1650 #define TYPE_OPERAND_FMT "#%s"
1653 /* These are specific to version 03.00 assembler syntax. */
1654 #define INTERNAL_ASM_OP "local"
1655 #define VERSION_ASM_OP "version"
1656 #define UNALIGNED_SHORT_ASM_OP "uahalf"
1657 #define UNALIGNED_INT_ASM_OP "uaword"
1658 #define PUSHSECTION_ASM_OP "section"
1659 #define POPSECTION_ASM_OP "previous"
1661 /* Output any initial stuff to the assembly file. Always put out
1662 a file directive, even if not debugging.
1664 Immediately after putting out the file, put out a "sem.<value>"
1665 declaration. This should be harmless on other systems, and
1666 is used in DG/UX by the debuggers to supplement COFF. The
1667 fields in the integer value are as follows:
1671 0-1 0 No information about stack locations
1672 1 Auto/param locations are based on r30
1673 2 Auto/param locations are based on CFA
1675 3-2 0 No information on dimension order
1676 1 Array dims in sym table matches source language
1677 2 Array dims in sym table is in reverse order
1679 5-4 0 No information about the case of global names
1680 1 Global names appear in the symbol table as in the source
1681 2 Global names have been converted to lower case
1682 3 Global names have been converted to upper case. */
1684 #ifdef SDB_DEBUGGING_INFO
1685 #define ASM_COFFSEM(FILE) \
1686 if (write_symbols == SDB_DEBUG) \
1688 fprintf (FILE, "\nsem.%x:\t\t; %s\n", \
1689 (((TARGET_OCS_FRAME_POSITION) ? 2 : 1) << 0) + (1 << 2) + (1 << 4),\
1690 (TARGET_OCS_FRAME_POSITION) \
1691 ? "frame is CFA, normal array dims, case unchanged" \
1692 : "frame is r30, normal array dims, case unchanged"); \
1695 #define ASM_COFFSEM(FILE)
1698 /* Output the first line of the assembly file. Redefined in m88kdgux.h. */
1700 #define ASM_FIRST_LINE(FILE) \
1702 if (VERSION_0300_SYNTAX) \
1703 fprintf (FILE, "\t%s\t \"03.00\"\n", VERSION_ASM_OP); \
1706 /* Override svr[34].h. */
1707 #undef ASM_FILE_START
1708 #define ASM_FILE_START(FILE) \
1709 output_file_start (FILE, f_options, sizeof f_options / sizeof f_options[0], \
1710 W_options, sizeof W_options / sizeof W_options[0])
1714 #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) \
1715 fprintf (FILE, "\t%s\t \"%s\"\n", FILE_ASM_OP, NAME)
1717 #ifdef SDB_DEBUGGING_INFO
1718 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \
1719 if (m88k_prologue_done) \
1720 fprintf (FILE, "\n\tln\t %d\t\t\t\t; Real source line %d\n",\
1721 LINE - sdb_begin_function_line, LINE)
1724 /* Code to handle #ident directives. Override svr[34].h definition. */
1725 #undef ASM_OUTPUT_IDENT
1726 #ifdef DBX_DEBUGGING_INFO
1727 #define ASM_OUTPUT_IDENT(FILE, NAME)
1729 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1730 output_ascii (FILE, IDENT_ASM_OP, 4000, NAME, strlen (NAME));
1733 /* Output to assembler file text saying following lines
1734 may contain character constants, extra white space, comments, etc. */
1735 #define ASM_APP_ON ""
1737 /* Output to assembler file text saying following lines
1738 no longer contain unusual constructs. */
1739 #define ASM_APP_OFF ""
1741 /* Format the assembly opcode so that the arguments are all aligned.
1742 The maximum instruction size is 8 characters (fxxx.xxx), so a tab and a
1743 space will do to align the output. Abandon the output if a `%' is
1745 #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
1750 for (orig_ptr = (PTR); \
1751 (ch = *(PTR)) && ch != ' ' && ch != '\t' && ch != '\n' && ch != '%'; \
1753 putc (ch, STREAM); \
1755 if (ch == ' ' && orig_ptr != (PTR) && (PTR) - orig_ptr < 8) \
1756 putc ('\t', STREAM); \
1759 /* How to refer to registers in assembler output.
1760 This sequence is indexed by compiler's hard-register-number.
1761 Updated by OVERRIDE_OPTIONS to include the # for version 03.00 syntax. */
1763 #define REGISTER_NAMES \
1764 {"#r0"+1, "#r1"+1, "#r2"+1, "#r3"+1, "#r4"+1, "#r5"+1, "#r6"+1, "#r7"+1, \
1765 "#r8"+1, "#r9"+1, "#r10"+1,"#r11"+1,"#r12"+1,"#r13"+1,"#r14"+1,"#r15"+1,\
1766 "#r16"+1,"#r17"+1,"#r18"+1,"#r19"+1,"#r20"+1,"#r21"+1,"#r22"+1,"#r23"+1,\
1767 "#r24"+1,"#r25"+1,"#r26"+1,"#r27"+1,"#r28"+1,"#r29"+1,"#r30"+1,"#r31"+1,\
1768 "#x0"+1, "#x1"+1, "#x2"+1, "#x3"+1, "#x4"+1, "#x5"+1, "#x6"+1, "#x7"+1, \
1769 "#x8"+1, "#x9"+1, "#x10"+1,"#x11"+1,"#x12"+1,"#x13"+1,"#x14"+1,"#x15"+1,\
1770 "#x16"+1,"#x17"+1,"#x18"+1,"#x19"+1,"#x20"+1,"#x21"+1,"#x22"+1,"#x23"+1,\
1771 "#x24"+1,"#x25"+1,"#x26"+1,"#x27"+1,"#x28"+1,"#x29"+1,"#x30"+1,"#x31"+1}
1773 /* Define additional names for use in asm clobbers and asm declarations.
1775 We define the fake Condition Code register as an alias for reg 0 (which
1776 is our `condition code' register), so that condition codes can easily
1777 be clobbered by an asm. The carry bit in the PSR is now used. */
1779 #define ADDITIONAL_REGISTER_NAMES {"psr", 0, "cc", 0}
1781 /* How to renumber registers for dbx and gdb. */
1782 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1784 /* Tell when to declare ASM names. Override svr4.h to provide this hook. */
1785 #undef DECLARE_ASM_NAME
1786 #define DECLARE_ASM_NAME TARGET_SVR4
1788 /* Write the extra assembler code needed to declare a function properly. */
1789 #undef ASM_DECLARE_FUNCTION_NAME
1790 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1792 if (DECLARE_ASM_NAME) \
1794 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
1795 assemble_name (FILE, NAME); \
1797 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
1798 putc ('\n', FILE); \
1800 ASM_OUTPUT_LABEL(FILE, NAME); \
1803 /* Write the extra assembler code needed to declare an object properly. */
1804 #undef ASM_DECLARE_OBJECT_NAME
1805 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
1807 if (DECLARE_ASM_NAME) \
1809 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
1810 assemble_name (FILE, NAME); \
1812 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
1813 putc ('\n', FILE); \
1814 if (!flag_inhibit_size_directive) \
1816 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1817 assemble_name (FILE, NAME); \
1818 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (decl))); \
1821 ASM_OUTPUT_LABEL(FILE, NAME); \
1824 /* This is how to declare the size of a function. */
1825 #undef ASM_DECLARE_FUNCTION_SIZE
1826 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
1828 if (DECLARE_ASM_NAME) \
1830 if (!flag_inhibit_size_directive) \
1833 static int labelno; \
1835 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
1836 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
1837 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1838 assemble_name (FILE, (FNAME)); \
1839 fprintf (FILE, ",%s-", &label[1]); \
1840 assemble_name (FILE, (FNAME)); \
1841 putc ('\n', FILE); \
1846 /* This is how to output the definition of a user-level label named NAME,
1847 such as the label on a static function or variable NAME. */
1848 #define ASM_OUTPUT_LABEL(FILE,NAME) \
1849 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1851 /* This is how to output a command to make the user-level label named NAME
1852 defined for reference from other files. */
1853 #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
1855 fprintf (FILE, "\t%s\t ", GLOBAL_ASM_OP); \
1856 assemble_name (FILE, NAME); \
1857 putc ('\n', FILE); \
1860 /* This is how to output a reference to a user-level label named NAME.
1861 Override svr[34].h. */
1862 #undef ASM_OUTPUT_LABELREF
1863 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
1865 if (! TARGET_NO_UNDERSCORES && ! VERSION_0300_SYNTAX) \
1866 fputc ('_', FILE); \
1867 fputs (NAME, FILE); \
1870 /* This is how to output an internal numbered label where
1871 PREFIX is the class of label and NUM is the number within the class.
1872 For V.4, labels use `.' rather than `@'. */
1874 #undef ASM_OUTPUT_INTERNAL_LABEL
1875 #ifdef AS_BUG_DOT_LABELS /* The assembler requires a declaration of local. */
1876 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1877 fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n\t%s\t .%s%d\n" : "@%s%d:\n", \
1878 PREFIX, NUM, INTERNAL_ASM_OP, PREFIX, NUM)
1880 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1881 fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n" : "@%s%d:\n", PREFIX, NUM)
1882 #endif /* AS_BUG_DOT_LABELS */
1884 /* This is how to store into the string LABEL
1885 the symbol_ref name of an internal numbered label where
1886 PREFIX is the class of label and NUM is the number within the class.
1887 This is suitable for output with `assemble_name'. This must agree
1888 with ASM_OUTPUT_INTERNAL_LABEL above, except for being prefixed
1891 #undef ASM_GENERATE_INTERNAL_LABEL
1892 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1893 sprintf (LABEL, VERSION_0300_SYNTAX ? "*.%s%d" : "*@%s%d", PREFIX, NUM)
1895 /* Internal macro to get a single precision floating point value into
1896 an int, so we can print it's value in hex. */
1897 #define FLOAT_TO_INT_INTERNAL( FVALUE, IVALUE ) \
1899 REAL_VALUE_TYPE d; \
1901 unsigned sign : 1; \
1902 unsigned exponent1 : 1; \
1903 unsigned exponent2 : 3; \
1904 unsigned exponent3 : 7; \
1905 unsigned mantissa1 : 20; \
1906 unsigned mantissa2 : 3; \
1907 unsigned mantissa3 : 29; \
1914 unsigned sign : 1; \
1915 unsigned exponent1 : 1; \
1916 unsigned exponent3 : 7; \
1917 unsigned mantissa1 : 20; \
1918 unsigned mantissa2 : 3; \
1922 _u.d = REAL_VALUE_TRUNCATE (SFmode, FVALUE); \
1923 _u2.s.sign = _u.s.sign; \
1924 _u2.s.exponent1 = _u.s.exponent1; \
1925 _u2.s.exponent3 = _u.s.exponent3; \
1926 _u2.s.mantissa1 = _u.s.mantissa1; \
1927 _u2.s.mantissa2 = _u.s.mantissa2; \
1931 /* This is how to output an assembler line defining a `double' constant.
1932 Use "word" pseudos to avoid printing NaNs, infinity, etc. */
1933 #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
1935 union { REAL_VALUE_TYPE d; long l[2]; } x; \
1937 fprintf (FILE, "\t%s\t 0x%.8x, 0x%.8x\n", INT_ASM_OP, \
1941 /* This is how to output an assembler line defining a `float' constant. */
1942 #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
1945 FLOAT_TO_INT_INTERNAL (VALUE, i); \
1946 fprintf (FILE, "\t%s\t 0x%.8x\n", INT_ASM_OP, i); \
1949 /* Likewise for `int', `short', and `char' constants. */
1950 #define ASM_OUTPUT_INT(FILE,VALUE) \
1951 ( fprintf (FILE, "\t%s\t ", INT_ASM_OP), \
1952 output_addr_const (FILE, (VALUE)), \
1953 fprintf (FILE, "\n"))
1955 #define ASM_OUTPUT_SHORT(FILE,VALUE) \
1956 ( fprintf (FILE, "\t%s\t ", SHORT_ASM_OP), \
1957 output_addr_const (FILE, (VALUE)), \
1958 fprintf (FILE, "\n"))
1960 #define ASM_OUTPUT_CHAR(FILE,VALUE) \
1961 ( fprintf (FILE, "\t%s\t ", CHAR_ASM_OP), \
1962 output_addr_const (FILE, (VALUE)), \
1963 fprintf (FILE, "\n"))
1965 /* This is how to output an assembler line for a numeric constant byte. */
1966 #define ASM_OUTPUT_BYTE(FILE,VALUE) \
1967 fprintf (FILE, "\t%s\t 0x%x\n", CHAR_ASM_OP, (VALUE))
1969 /* The single-byte pseudo-op is the default. Override svr[34].h. */
1971 #define ASM_BYTE_OP "byte"
1972 #undef ASM_OUTPUT_ASCII
1973 #define ASM_OUTPUT_ASCII(FILE, P, SIZE) \
1974 output_ascii (FILE, ASCII_DATA_ASM_OP, 48, P, SIZE)
1976 /* Override svr4.h. Change to the readonly data section for a table of
1977 addresses. final_scan_insn changes back to the text section. */
1978 #undef ASM_OUTPUT_CASE_LABEL
1979 #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
1981 if (! CASE_VECTOR_INSNS) \
1982 readonly_data_section (); \
1983 ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
1986 /* Epilogue for case labels. This jump instruction is called by casesi
1987 to transfer to the appropriate branch instruction within the table.
1988 The label `@L<n>e' is coined to mark the end of the table. */
1989 #define ASM_OUTPUT_CASE_END(FILE, NUM, TABLE) \
1991 if (CASE_VECTOR_INSNS) \
1994 ASM_GENERATE_INTERNAL_LABEL (label, "L", NUM); \
1995 fprintf (FILE, "%se:\n", &label[1]); \
1996 if (! flag_delayed_branch) \
1997 fprintf (FILE, "\tlda\t %s,%s[%s]\n", reg_names[1], \
1998 reg_names[1], reg_names[m88k_case_index]); \
1999 fprintf (FILE, "\tjmp\t %s\n", reg_names[1]); \
2003 /* This is how to output an element of a case-vector that is absolute. */
2004 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
2007 ASM_GENERATE_INTERNAL_LABEL (buffer, "L", VALUE); \
2008 fprintf (FILE, CASE_VECTOR_INSNS ? "\tbr\t %s\n" : "\tword\t %s\n", \
2012 /* This is how to output an element of a case-vector that is relative. */
2013 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
2014 ASM_OUTPUT_ADDR_VEC_ELT (FILE, VALUE)
2016 /* This is how to output an assembler line
2017 that says to advance the location counter
2018 to a multiple of 2**LOG bytes. */
2019 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
2021 fprintf (FILE, "\t%s\t %d\n", ALIGN_ASM_OP, 1<<(LOG))
2023 /* On the m88100, align the text address to half a cache boundary when it
2024 can only be reached by jumping. Pack code tightly when compiling
2026 #define ASM_OUTPUT_ALIGN_CODE(FILE) \
2027 ASM_OUTPUT_ALIGN (FILE, \
2028 (TARGET_88100 && !flag_inhibit_size_directive ? 3 : 2))
2030 /* Override svr[34].h. */
2031 #undef ASM_OUTPUT_SKIP
2032 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
2033 fprintf (FILE, "\t%s\t %u\n", SKIP_ASM_OP, (SIZE))
2035 /* Override svr4.h. */
2036 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
2038 /* This says how to output an assembler line to define a global common
2039 symbol. Size can be zero for the unusual case of a `struct { int : 0; }'.
2040 Override svr[34].h. */
2041 #undef ASM_OUTPUT_COMMON
2042 #undef ASM_OUTPUT_ALIGNED_COMMON
2043 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
2044 ( fprintf ((FILE), "\t%s\t ", \
2045 ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SCOMM_ASM_OP : COMMON_ASM_OP), \
2046 assemble_name ((FILE), (NAME)), \
2047 fprintf ((FILE), ",%u\n", (SIZE) ? (SIZE) : 1))
2049 /* This says how to output an assembler line to define a local common
2050 symbol. Override svr[34].h. */
2051 #undef ASM_OUTPUT_LOCAL
2052 #undef ASM_OUTPUT_ALIGNED_LOCAL
2053 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
2054 ( fprintf ((FILE), "\t%s\t ", \
2055 ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SBSS_ASM_OP : BSS_ASM_OP), \
2056 assemble_name ((FILE), (NAME)), \
2057 fprintf ((FILE), ",%u,%d\n", (SIZE) ? (SIZE) : 1, (SIZE) <= 4 ? 4 : 8))
2059 /* Store in OUTPUT a string (made with alloca) containing
2060 an assembler-name for a local static variable named NAME.
2061 LABELNO is an integer which is different for each call. */
2062 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
2063 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
2064 sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
2066 /* This is how to output an insn to push a register on the stack.
2067 It need not be very fast code. */
2068 #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
2069 fprintf (FILE, "\tsubu\t %s,%s,%d\n\tst\t %s,%s,0\n", \
2070 reg_names[STACK_POINTER_REGNUM], \
2071 reg_names[STACK_POINTER_REGNUM], \
2072 (STACK_BOUNDARY / BITS_PER_UNIT), \
2074 reg_names[STACK_POINTER_REGNUM])
2076 /* This is how to output an insn to pop a register from the stack. */
2077 #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
2078 fprintf (FILE, "\tld\t %s,%s,0\n\taddu\t %s,%s,%d\n", \
2080 reg_names[STACK_POINTER_REGNUM], \
2081 reg_names[STACK_POINTER_REGNUM], \
2082 reg_names[STACK_POINTER_REGNUM], \
2083 (STACK_BOUNDARY / BITS_PER_UNIT))
2085 /* Define the parentheses used to group arithmetic operations
2086 in assembler code. */
2087 #define ASM_OPEN_PAREN "("
2088 #define ASM_CLOSE_PAREN ")"
2090 /* Define results of standard character escape sequences. */
2091 #define TARGET_BELL 007
2092 #define TARGET_BS 010
2093 #define TARGET_TAB 011
2094 #define TARGET_NEWLINE 012
2095 #define TARGET_VT 013
2096 #define TARGET_FF 014
2097 #define TARGET_CR 015
2099 /* Macros to deal with OCS debug information */
2101 #define OCS_START_PREFIX "Ltb"
2102 #define OCS_END_PREFIX "Lte"
2104 #define PUT_OCS_FUNCTION_START(FILE) \
2105 { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_START_PREFIX, m88k_function_number); }
2107 #define PUT_OCS_FUNCTION_END(FILE) \
2108 { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_END_PREFIX, m88k_function_number); }
2110 /* Macros for debug information */
2111 #define DEBUGGER_AUTO_OFFSET(X) \
2112 (m88k_debugger_offset (X, 0) \
2113 + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
2115 #define DEBUGGER_ARG_OFFSET(OFFSET, X) \
2116 (m88k_debugger_offset (X, OFFSET) \
2117 + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
2119 /* Macros to deal with SDB debug information */
2120 #ifdef SDB_DEBUGGING_INFO
2122 /* Output structure tag names even when it causes a forward reference. */
2123 #define SDB_ALLOW_FORWARD_REFERENCES
2125 /* Print out extra debug information in the assembler file */
2126 #define PUT_SDB_SCL(a) \
2128 register int s = (a); \
2129 register char *scl; \
2132 case C_EFCN: scl = "end of function"; break; \
2133 case C_NULL: scl = "NULL storage class"; break; \
2134 case C_AUTO: scl = "automatic"; break; \
2135 case C_EXT: scl = "external"; break; \
2136 case C_STAT: scl = "static"; break; \
2137 case C_REG: scl = "register"; break; \
2138 case C_EXTDEF: scl = "external definition"; break; \
2139 case C_LABEL: scl = "label"; break; \
2140 case C_ULABEL: scl = "undefined label"; break; \
2141 case C_MOS: scl = "structure member"; break; \
2142 case C_ARG: scl = "argument"; break; \
2143 case C_STRTAG: scl = "structure tag"; break; \
2144 case C_MOU: scl = "union member"; break; \
2145 case C_UNTAG: scl = "union tag"; break; \
2146 case C_TPDEF: scl = "typedef"; break; \
2147 case C_USTATIC: scl = "uninitialized static"; break; \
2148 case C_ENTAG: scl = "enumeration tag"; break; \
2149 case C_MOE: scl = "member of enumeration"; break; \
2150 case C_REGPARM: scl = "register parameter"; break; \
2151 case C_FIELD: scl = "bit field"; break; \
2152 case C_BLOCK: scl = "block start/end"; break; \
2153 case C_FCN: scl = "function start/end"; break; \
2154 case C_EOS: scl = "end of structure"; break; \
2155 case C_FILE: scl = "filename"; break; \
2156 case C_LINE: scl = "line"; break; \
2157 case C_ALIAS: scl = "duplicated tag"; break; \
2158 case C_HIDDEN: scl = "hidden"; break; \
2159 default: scl = "unknown"; break; \
2162 fprintf(asm_out_file, "\tscl\t %d\t\t\t\t; %s\n", s, scl); \
2165 #define PUT_SDB_TYPE(a) \
2167 register int t = (a); \
2168 static char buffer[100]; \
2169 register char *p = buffer, *q; \
2170 register int typ = t; \
2173 for (i = 0; i <= 5; i++) \
2175 switch ((typ >> ((i*N_TSHIFT) + N_BTSHFT)) & 03) \
2178 strcpy (p, "ptr to "); \
2179 p += sizeof("ptr to"); \
2183 strcpy (p, "array of "); \
2184 p += sizeof("array of"); \
2188 strcpy (p, "func ret "); \
2189 p += sizeof("func ret"); \
2194 switch (typ & N_BTMASK) \
2196 case T_NULL: q = "<no type>"; break; \
2197 case T_CHAR: q = "char"; break; \
2198 case T_SHORT: q = "short"; break; \
2199 case T_INT: q = "int"; break; \
2200 case T_LONG: q = "long"; break; \
2201 case T_FLOAT: q = "float"; break; \
2202 case T_DOUBLE: q = "double"; break; \
2203 case T_STRUCT: q = "struct"; break; \
2204 case T_UNION: q = "union"; break; \
2205 case T_ENUM: q = "enum"; break; \
2206 case T_MOE: q = "enum member"; break; \
2207 case T_UCHAR: q = "unsigned char"; break; \
2208 case T_USHORT: q = "unsigned short"; break; \
2209 case T_UINT: q = "unsigned int"; break; \
2210 case T_ULONG: q = "unsigned long"; break; \
2211 default: q = "void"; break; \
2215 fprintf(asm_out_file, "\ttype\t %d\t\t\t\t; %s\n", \
2219 #define PUT_SDB_INT_VAL(a) \
2220 fprintf (asm_out_file, "\tval\t %d\n", (a))
2222 #define PUT_SDB_VAL(a) \
2223 ( fprintf (asm_out_file, "\tval\t "), \
2224 output_addr_const (asm_out_file, (a)), \
2225 fputc ('\n', asm_out_file))
2227 #define PUT_SDB_DEF(a) \
2228 do { fprintf (asm_out_file, "\tsdef\t "); \
2229 ASM_OUTPUT_LABELREF (asm_out_file, a); \
2230 fputc ('\n', asm_out_file); \
2233 #define PUT_SDB_PLAIN_DEF(a) \
2234 fprintf(asm_out_file,"\tsdef\t .%s\n", a)
2236 /* Simply and endef now. */
2237 #define PUT_SDB_ENDEF \
2238 fputs("\tendef\n\n", asm_out_file)
2240 #define PUT_SDB_SIZE(a) \
2241 fprintf (asm_out_file, "\tsize\t %d\n", (a))
2243 /* Max dimensions to store for debug information (limited by COFF). */
2244 #define SDB_MAX_DIM 6
2246 /* New method for dim operations. */
2247 #define PUT_SDB_START_DIM \
2248 fputs("\tdim\t ", asm_out_file)
2250 /* How to end the DIM sequence. */
2251 #define PUT_SDB_LAST_DIM(a) \
2252 fprintf(asm_out_file, "%d\n", a)
2254 #define PUT_SDB_TAG(a) \
2256 fprintf (asm_out_file, "\ttag\t "); \
2257 ASM_OUTPUT_LABELREF (asm_out_file, a); \
2258 fputc ('\n', asm_out_file); \
2261 #define PUT_SDB_BLOCK_OR_FUNCTION(NAME, SCL, LINE) \
2263 fprintf (asm_out_file, "\n\tsdef\t %s\n\tval\t .\n", \
2265 PUT_SDB_SCL( SCL ); \
2266 fprintf (asm_out_file, "\tline\t %d\n\tendef\n\n", \
2270 #define PUT_SDB_BLOCK_START(LINE) \
2271 PUT_SDB_BLOCK_OR_FUNCTION (".bb", C_BLOCK, (LINE))
2273 #define PUT_SDB_BLOCK_END(LINE) \
2274 PUT_SDB_BLOCK_OR_FUNCTION (".eb", C_BLOCK, (LINE))
2276 #define PUT_SDB_FUNCTION_START(LINE) \
2278 fprintf (asm_out_file, "\tln\t 1\n"); \
2279 PUT_SDB_BLOCK_OR_FUNCTION (".bf", C_FCN, (LINE)); \
2282 #define PUT_SDB_FUNCTION_END(LINE) \
2284 PUT_SDB_BLOCK_OR_FUNCTION (".ef", C_FCN, (LINE)); \
2287 #define PUT_SDB_EPILOGUE_END(NAME) \
2290 fprintf (asm_out_file, "\n\tsdef\t "); \
2291 ASM_OUTPUT_LABELREF(asm_out_file, (NAME)); \
2292 fputc('\n', asm_out_file); \
2293 PUT_SDB_SCL( C_EFCN ); \
2294 fprintf (asm_out_file, "\tendef\n\n"); \
2297 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
2298 sprintf ((BUFFER), ".%dfake", (NUMBER));
2300 #endif /* SDB_DEBUGGING_INFO */
2302 /* Support const and tdesc sections. Generally, a const section will
2303 be distinct from the text section whenever we do V.4-like things
2304 and so follows DECLARE_ASM_NAME. Note that strings go in text
2305 rather than const. Override svr[34].h. */
2307 #undef USE_CONST_SECTION
2308 #undef EXTRA_SECTIONS
2310 #define USE_CONST_SECTION DECLARE_ASM_NAME
2312 #if defined(USING_SVR4_H)
2314 #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors
2315 #define INIT_SECTION_FUNCTION
2316 #define FINI_SECTION_FUNCTION
2318 #elif defined(USING_SVR3_H)
2320 #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors, \
2323 #else /* m88kluna or other not based on svr[34].h. */
2325 #undef INIT_SECTION_ASM_OP
2326 #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata
2327 #define CONST_SECTION_FUNCTION \
2333 #define CTORS_SECTION_FUNCTION
2334 #define DTORS_SECTION_FUNCTION
2335 #define INIT_SECTION_FUNCTION
2336 #define FINI_SECTION_FUNCTION
2338 #endif /* USING_SVR4_H */
2340 #undef EXTRA_SECTION_FUNCTIONS
2341 #define EXTRA_SECTION_FUNCTIONS \
2342 CONST_SECTION_FUNCTION \
2347 if (in_section != in_tdesc) \
2349 fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \
2350 in_section = in_tdesc; \
2357 if (in_section != in_sdata) \
2359 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
2360 in_section = in_sdata; \
2364 CTORS_SECTION_FUNCTION \
2365 DTORS_SECTION_FUNCTION \
2366 INIT_SECTION_FUNCTION \
2367 FINI_SECTION_FUNCTION
2369 #undef READONLY_DATA_SECTION
2371 /* A C statement or statements to switch to the appropriate
2372 section for output of DECL. DECL is either a `VAR_DECL' node
2373 or a constant of some sort. RELOC indicates whether forming
2374 the initial value of DECL requires link-time relocations.
2376 For strings, the section is selected before the segment info is encoded. */
2377 #undef SELECT_SECTION
2378 #define SELECT_SECTION(DECL,RELOC) \
2380 if (TREE_CODE (DECL) == STRING_CST) \
2382 if (! flag_writable_strings) \
2384 else if (m88k_gp_threshold > 0 \
2385 && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \
2390 else if (TREE_CODE (DECL) == VAR_DECL) \
2392 if (SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0))) \
2394 else if ((flag_pic && RELOC) \
2395 || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
2404 /* Jump tables consist of branch instructions and should be output in
2405 the text section. When we use a table of addresses, we explicitly
2406 change to the readonly data section. */
2407 #define JUMP_TABLES_IN_TEXT_SECTION 1
2409 /* Define this macro if references to a symbol must be treated differently
2410 depending on something about the variable or function named by the
2411 symbol (such as what section it is in).
2413 The macro definition, if any, is executed immediately after the rtl for
2414 DECL has been created and stored in `DECL_RTL (DECL)'. The value of the
2415 rtl will be a `mem' whose address is a `symbol_ref'.
2417 For the m88k, determine if the item should go in the global pool. */
2418 #define ENCODE_SECTION_INFO(DECL) \
2420 if (m88k_gp_threshold > 0) \
2421 if (TREE_CODE (DECL) == VAR_DECL) \
2423 if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
2425 int size = int_size_in_bytes (TREE_TYPE (DECL)); \
2427 if (size > 0 && size <= m88k_gp_threshold) \
2428 SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \
2431 else if (TREE_CODE (DECL) == STRING_CST \
2432 && flag_writable_strings \
2433 && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \
2434 SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 1; \
2437 /* Print operand X (an rtx) in assembler syntax to file FILE.
2438 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
2439 For `%' followed by punctuation, CODE is the punctuation and X is null. */
2440 #define PRINT_OPERAND_PUNCT_VALID_P(c) \
2441 ((c) == '#' || (c) == '.' || (c) == '!' || (c) == '*' || (c) == ';')
2443 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
2445 /* Print a memory address as an operand to reference that memory location. */
2446 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
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