1 /* Definitions of target machine for GNU compiler for
2 Motorola m88100 in an 88open OCS/BCS environment.
3 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 2001, 2002 Free Software Foundation, Inc.
5 Contributed by Michael Tiemann (tiemann@cygnus.com).
6 Currently maintained by (gcc@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, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
25 /* The m88100 port of GNU CC adheres to the various standards from 88open.
26 These documents are available by writing:
28 88open Consortium Ltd.
29 100 Homeland Court, Suite 800
33 In brief, the current standards are:
35 Binary Compatibility Standard, Release 1.1A, May 1991
36 This provides for portability of application-level software at the
37 executable level for AT&T System V Release 3.2.
39 Object Compatibility Standard, Release 1.1A, May 1991
40 This provides for portability of application-level software at the
41 object file and library level for C, Fortran, and Cobol, and again,
44 Under development are standards for AT&T System V Release 4, based on the
45 [generic] System V Application Binary Interface from AT&T. These include:
47 System V Application Binary Interface, Motorola 88000 Processor Supplement
48 Another document from AT&T for SVR4 specific to the m88100.
49 Available from Prentice Hall.
51 System V Application Binary Interface, Motorola 88000 Processor Supplement,
52 Release 1.1, Draft H, May 6, 1991
53 A proposed update to the AT&T document from 88open.
55 System V ABI Implementation Guide for the M88000 Processor,
56 Release 1.0, January 1991
57 A companion ABI document from 88open. */
59 /* Other *.h files in config/m88k include this one and override certain items.
60 Currently these are sysv3.h, sysv4.h, dgux.h, dolph.h, tekXD88.h, and luna.h.
61 Additionally, sysv4.h and dgux.h include svr4.h first. All other
62 m88k targets except luna.h are based on svr3.h. */
64 /* Choose SVR3 as the default. */
65 #if !defined(DBX_DEBUGGING_INFO) && !defined(DWARF_DEBUGGING_INFO)
69 /* External types used. */
71 /* What instructions are needed to manufacture an integer constant. */
72 enum m88k_instruction {
83 /* Which processor to schedule for. The elements of the enumeration
84 must match exactly the cpu attribute in the m88k.md machine description. */
92 /* Recast the cpu class to be the cpu attribute. */
93 #define m88k_cpu_attr ((enum attr_cpu)m88k_cpu)
95 /* External variables/functions defined in m88k.c. */
97 extern const char *m88k_pound_sign;
98 extern const char *m88k_short_data;
99 extern const char *m88k_version;
100 extern char m88k_volatile_code;
102 extern unsigned m88k_gp_threshold;
103 extern int m88k_prologue_done;
104 extern int m88k_function_number;
105 extern int m88k_fp_offset;
106 extern int m88k_stack_size;
107 extern int m88k_case_index;
109 extern struct rtx_def *m88k_compare_reg;
110 extern struct rtx_def *m88k_compare_op0;
111 extern struct rtx_def *m88k_compare_op1;
113 extern enum processor_type m88k_cpu;
115 /* external variables defined elsewhere in the compiler */
117 extern int target_flags; /* -m compiler switches */
118 extern int frame_pointer_needed; /* current function has a FP */
119 extern int flag_delayed_branch; /* -fdelayed-branch */
120 extern int flag_pic; /* -fpic */
122 /* Specify the default monitors. The meaning of these values can
123 be obtained by doing "grep MONITOR_GCC *m88k*". Generally, the
124 values downward from 0x8000 are tests that will soon go away.
125 values upward from 0x1 are generally useful tests that will remain. */
128 #define MONITOR_GCC 0
131 /*** Controlling the Compilation Driver, `gcc' ***/
132 /* Show we can debug even without a frame pointer. */
133 #define CAN_DEBUG_WITHOUT_FP
135 /* If -m88100 is in effect, add -D__m88100__; similarly for -m88110.
136 Here, the CPU_DEFAULT is assumed to be -m88100. */
138 #define CPP_SPEC "%{!m88000:%{!m88100:%{m88110:-D__m88110__}}} \
139 %{!m88000:%{!m88110:-D__m88100__}}"
141 /* LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC defined in svr3.h.
142 ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC redefined
144 CPP_SPEC, ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and
145 STARTFILE_SPEC redefined in dgux.h. */
147 /*** Run-time Target Specification ***/
149 /* Names to predefine in the preprocessor for this target machine.
150 Redefined in sysv3.h, sysv4.h, dgux.h, and luna.h. */
151 #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -D__CLASSIFY_TYPE__=2"
153 #define TARGET_VERSION fprintf (stderr, " (%s)", VERSION_INFO1)
155 #ifndef VERSION_INFO1
156 #define VERSION_INFO1 "m88k"
159 /* Run-time compilation parameters selecting different hardware subsets. */
161 /* Macro to define tables used to set the flags.
162 This is a list in braces of pairs in braces,
163 each pair being { "NAME", VALUE }
164 where VALUE is the bits to set or minus the bits to clear.
165 An empty string NAME is used to identify the default VALUE. */
167 #define MASK_88100 0x00000001 /* Target m88100 */
168 #define MASK_88110 0x00000002 /* Target m88110 */
169 #define MASK_88000 (MASK_88100 | MASK_88110)
171 #define MASK_OCS_DEBUG_INFO 0x00000004 /* Emit .tdesc info */
172 #define MASK_OCS_FRAME_POSITION 0x00000008 /* Debug frame = CFA, not r30 */
173 #define MASK_SVR4 0x00000010 /* Target is AT&T System V.4 */
174 #define MASK_SVR3 0x00000020 /* Target is AT&T System V.3 */
175 #define MASK_NO_UNDERSCORES 0x00000040 /* Don't emit a leading `_' */
176 #define MASK_BIG_PIC 0x00000080 /* PIC with large got-rel's -fPIC */
177 #define MASK_TRAP_LARGE_SHIFT 0x00000100 /* Trap if shift not <= 31 */
178 #define MASK_HANDLE_LARGE_SHIFT 0x00000200 /* Handle shift count >= 32 */
179 #define MASK_CHECK_ZERO_DIV 0x00000400 /* Check for int div. by 0 */
180 #define MASK_USE_DIV 0x00000800 /* No signed div. checks */
181 #define MASK_IDENTIFY_REVISION 0x00001000 /* Emit ident, with GCC rev */
182 #define MASK_WARN_PASS_STRUCT 0x00002000 /* Warn about passed structs */
183 #define MASK_OPTIMIZE_ARG_AREA 0x00004000 /* Save stack space */
184 #define MASK_NO_SERIALIZE_VOLATILE 0x00008000 /* Serialize volatile refs */
185 #define MASK_EITHER_LARGE_SHIFT (MASK_TRAP_LARGE_SHIFT | \
186 MASK_HANDLE_LARGE_SHIFT)
187 #define MASK_OMIT_LEAF_FRAME_POINTER 0x00020000 /* omit leaf frame pointers */
190 #define TARGET_88100 ((target_flags & MASK_88000) == MASK_88100)
191 #define TARGET_88110 ((target_flags & MASK_88000) == MASK_88110)
192 #define TARGET_88000 ((target_flags & MASK_88000) == MASK_88000)
194 #define TARGET_OCS_DEBUG_INFO (target_flags & MASK_OCS_DEBUG_INFO)
195 #define TARGET_OCS_FRAME_POSITION (target_flags & MASK_OCS_FRAME_POSITION)
196 #define TARGET_SVR4 (target_flags & MASK_SVR4)
197 #define TARGET_SVR3 (target_flags & MASK_SVR3)
198 #define TARGET_NO_UNDERSCORES (target_flags & MASK_NO_UNDERSCORES)
199 #define TARGET_BIG_PIC (target_flags & MASK_BIG_PIC)
200 #define TARGET_TRAP_LARGE_SHIFT (target_flags & MASK_TRAP_LARGE_SHIFT)
201 #define TARGET_HANDLE_LARGE_SHIFT (target_flags & MASK_HANDLE_LARGE_SHIFT)
202 #define TARGET_CHECK_ZERO_DIV (target_flags & MASK_CHECK_ZERO_DIV)
203 #define TARGET_USE_DIV (target_flags & MASK_USE_DIV)
204 #define TARGET_IDENTIFY_REVISION (target_flags & MASK_IDENTIFY_REVISION)
205 #define TARGET_WARN_PASS_STRUCT (target_flags & MASK_WARN_PASS_STRUCT)
206 #define TARGET_OPTIMIZE_ARG_AREA (target_flags & MASK_OPTIMIZE_ARG_AREA)
207 #define TARGET_SERIALIZE_VOLATILE (!(target_flags & MASK_NO_SERIALIZE_VOLATILE))
209 #define TARGET_EITHER_LARGE_SHIFT (target_flags & MASK_EITHER_LARGE_SHIFT)
210 #define TARGET_OMIT_LEAF_FRAME_POINTER (target_flags & MASK_OMIT_LEAF_FRAME_POINTER)
212 /* Redefined in sysv3.h, sysv4.h, and dgux.h. */
213 #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV)
214 #define CPU_DEFAULT MASK_88100
216 #define TARGET_SWITCHES \
218 { "88110", MASK_88110 }, \
219 { "88100", MASK_88100 }, \
220 { "88000", MASK_88000 }, \
221 { "ocs-debug-info", MASK_OCS_DEBUG_INFO }, \
222 { "no-ocs-debug-info", -MASK_OCS_DEBUG_INFO }, \
223 { "ocs-frame-position", MASK_OCS_FRAME_POSITION }, \
224 { "no-ocs-frame-position", -MASK_OCS_FRAME_POSITION }, \
225 { "svr4", MASK_SVR4 }, \
226 { "svr3", -MASK_SVR4 }, \
227 { "no-underscores", MASK_NO_UNDERSCORES }, \
228 { "big-pic", MASK_BIG_PIC }, \
229 { "trap-large-shift", MASK_TRAP_LARGE_SHIFT }, \
230 { "handle-large-shift", MASK_HANDLE_LARGE_SHIFT }, \
231 { "check-zero-division", MASK_CHECK_ZERO_DIV }, \
232 { "no-check-zero-division", -MASK_CHECK_ZERO_DIV }, \
233 { "use-div-instruction", MASK_USE_DIV }, \
234 { "identify-revision", MASK_IDENTIFY_REVISION }, \
235 { "warn-passed-structs", MASK_WARN_PASS_STRUCT }, \
236 { "optimize-arg-area", MASK_OPTIMIZE_ARG_AREA }, \
237 { "no-optimize-arg-area", -MASK_OPTIMIZE_ARG_AREA }, \
238 { "no-serialize-volatile", MASK_NO_SERIALIZE_VOLATILE }, \
239 { "serialize-volatile", -MASK_NO_SERIALIZE_VOLATILE }, \
240 { "omit-leaf-frame-pointer", MASK_OMIT_LEAF_FRAME_POINTER }, \
241 { "no-omit-leaf-frame-pointer", -MASK_OMIT_LEAF_FRAME_POINTER }, \
243 /* Default switches */ \
244 { "", TARGET_DEFAULT }, \
247 /* Redefined in dgux.h. */
248 #define SUBTARGET_SWITCHES
250 /* Macro to define table for command options with values. */
252 #define TARGET_OPTIONS { { "short-data-", &m88k_short_data }, \
253 { "version-", &m88k_version } }
255 /* Do any checking or such that is needed after processing the -m switches. */
257 #define OVERRIDE_OPTIONS \
261 if ((target_flags & MASK_88000) == 0) \
262 target_flags |= CPU_DEFAULT; \
266 target_flags |= MASK_USE_DIV; \
267 target_flags &= ~MASK_CHECK_ZERO_DIV; \
270 m88k_cpu = (TARGET_88000 ? PROCESSOR_M88000 \
271 : (TARGET_88100 ? PROCESSOR_M88100 : PROCESSOR_M88110)); \
273 if (TARGET_BIG_PIC) \
276 if ((target_flags & MASK_EITHER_LARGE_SHIFT) == MASK_EITHER_LARGE_SHIFT) \
277 error ("-mtrap-large-shift and -mhandle-large-shift are incompatible");\
281 for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) \
283 m88k_pound_sign = "#"; \
287 target_flags |= MASK_SVR3; \
288 target_flags &= ~MASK_SVR4; \
291 if (m88k_short_data) \
293 const char *p = m88k_short_data; \
299 error ("invalid option `-mshort-data-%s'", m88k_short_data); \
302 m88k_gp_threshold = atoi (m88k_short_data); \
303 if (m88k_gp_threshold > 0x7fffffff) \
304 error ("-mshort-data-%s is too large ", m88k_short_data); \
306 error ("-mshort-data-%s and PIC are incompatible", m88k_short_data); \
308 if (TARGET_OMIT_LEAF_FRAME_POINTER) /* keep nonleaf frame pointers */ \
309 flag_omit_frame_pointer = 1; \
312 /*** Storage Layout ***/
314 /* Sizes in bits of the various types. */
315 #define SHORT_TYPE_SIZE 16
316 #define INT_TYPE_SIZE 32
317 #define LONG_TYPE_SIZE 32
318 #define LONG_LONG_TYPE_SIZE 64
319 #define FLOAT_TYPE_SIZE 32
320 #define DOUBLE_TYPE_SIZE 64
321 #define LONG_DOUBLE_TYPE_SIZE 64
323 /* Define this if most significant bit is lowest numbered
324 in instructions that operate on numbered bit-fields.
325 Somewhat arbitrary. It matches the bit field patterns. */
326 #define BITS_BIG_ENDIAN 1
328 /* Define this if most significant byte of a word is the lowest numbered.
329 That is true on the m88000. */
330 #define BYTES_BIG_ENDIAN 1
332 /* Define this if most significant word of a multiword number is the lowest
334 For the m88000 we can decide arbitrarily since there are no machine
335 instructions for them. */
336 #define WORDS_BIG_ENDIAN 1
338 /* Width of a word, in units (bytes). */
339 #define UNITS_PER_WORD 4
341 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
342 #define PARM_BOUNDARY 32
344 /* Largest alignment for stack parameters (if greater than PARM_BOUNDARY). */
345 #define MAX_PARM_BOUNDARY 64
347 /* Boundary (in *bits*) on which stack pointer should be aligned. */
348 #define STACK_BOUNDARY 128
350 /* Allocation boundary (in *bits*) for the code of a function. On the
351 m88100, it is desirable to align to a cache line. However, SVR3 targets
352 only provided 8 byte alignment. The m88110 cache is small, so align
353 to an 8 byte boundary. Pack code tightly when compiling crtstuff.c. */
354 #define FUNCTION_BOUNDARY (flag_inhibit_size_directive ? 32 : \
355 (TARGET_88100 && TARGET_SVR4 ? 128 : 64))
357 /* No data type wants to be aligned rounder than this. */
358 #define BIGGEST_ALIGNMENT 64
360 /* The best alignment to use in cases where we have a choice. */
361 #define FASTEST_ALIGNMENT (TARGET_88100 ? 32 : 64)
363 /* Make strings 4/8 byte aligned so strcpy from constants will be faster. */
364 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
365 ((TREE_CODE (EXP) == STRING_CST \
366 && (ALIGN) < FASTEST_ALIGNMENT) \
367 ? FASTEST_ALIGNMENT : (ALIGN))
369 /* Make arrays of chars 4/8 byte aligned for the same reasons. */
370 #define DATA_ALIGNMENT(TYPE, ALIGN) \
371 (TREE_CODE (TYPE) == ARRAY_TYPE \
372 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
373 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
375 /* Alignment of field after `int : 0' in a structure.
376 Ignored with PCC_BITFIELD_TYPE_MATTERS. */
377 /* #define EMPTY_FIELD_BOUNDARY 8 */
379 /* Every structure's size must be a multiple of this. */
380 #define STRUCTURE_SIZE_BOUNDARY 8
382 /* Set this nonzero if move instructions will actually fail to work
383 when given unaligned data. */
384 #define STRICT_ALIGNMENT 1
386 /* A bitfield declared as `int' forces `int' alignment for the struct. */
387 #define PCC_BITFIELD_TYPE_MATTERS 1
389 /* Maximum size (in bits) to use for the largest integral type that
390 replaces a BLKmode type. */
391 /* #define MAX_FIXED_MODE_SIZE 0 */
393 /* Check a `double' value for validity for a particular machine mode.
394 This is defined to avoid crashes outputting certain constants.
395 Since we output the number in hex, the assembler won't choke on it. */
396 /* #define CHECK_FLOAT_VALUE(MODE,VALUE) */
398 /* A code distinguishing the floating point format of the target machine. */
399 /* #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT */
401 /*** Register Usage ***/
403 /* Number of actual hardware registers.
404 The hardware registers are assigned numbers for the compiler
405 from 0 to just below FIRST_PSEUDO_REGISTER.
406 All registers that the compiler knows about must be given numbers,
407 even those that are not normally considered general registers.
409 The m88100 has a General Register File (GRF) of 32 32-bit registers.
410 The m88110 adds an Extended Register File (XRF) of 32 80-bit registers. */
411 #define FIRST_PSEUDO_REGISTER 64
412 #define FIRST_EXTENDED_REGISTER 32
414 /* General notes on extended registers, their use and misuse.
418 spill area instead of memory.
419 -waste if only used once
421 floating point calculations
422 -probably a waste unless we have run out of general purpose registers
424 freeing up general purpose registers
425 -e.g. may be able to have more loop invariants if floating
426 point is moved into extended registers.
429 I've noticed wasteful moves into and out of extended registers; e.g. a load
430 into x21, then inside a loop a move into r24, then r24 used as input to
431 an fadd. Why not just load into r24 to begin with? Maybe the new cse.c
432 will address this. This wastes a move, but the load,store and move could
433 have been saved had extended registers been used throughout.
434 E.g. in the code following code, if z and xz are placed in extended
435 registers, there is no need to save preserve registers.
437 long c=1,d=1,e=1,f=1,g=1,h=1,i=1,j=1,k;
446 k = b + c + d + e + f + g + h + a + i + j++;
450 printf("k= %d; z=%f;\n", k, z);
453 I've found that it is possible to change the constraints (putting * before
454 the 'r' constraints int the fadd.ddd instruction) and get the entire
455 addition and store to go into extended registers. However, this also
456 forces simple addition and return of floating point arguments to a
457 function into extended registers. Not the correct solution.
459 Found the following note in local-alloc.c which may explain why I can't
460 get both registers to be in extended registers since two are allocated in
461 local-alloc and one in global-alloc. Doesn't explain (I don't believe)
462 why an extended register is used instead of just using the preserve
466 We have provision to exempt registers, even when they are contained
467 within the block, that can be tied to others that are not contained in it.
468 This is so that global_alloc could process them both and tie them then.
469 But this is currently disabled since tying in global_alloc is not
472 The explanation of why the preserved register is not used is as follows,
473 I believe. The registers are being allocated in order. Tying is not
474 done so efficiently, so when it comes time to do the first allocation,
475 there are no registers left to use without spilling except extended
476 registers. Then when the next pseudo register needs a hard reg, there
477 are still no registers to be had for free, but this one must be a GRF
478 reg instead of an extended reg, so a preserve register is spilled. Thus
479 the move from extended to GRF is necessitated. I do not believe this can
480 be 'fixed' through the files in config/m88k.
482 gcc seems to sometimes make worse use of register allocation -- not counting
483 moves -- whenever extended registers are present. For example in the
484 whetstone, the simple for loop (slightly modified)
485 for(i = 1; i <= n1; i++)
487 x1 = (x1 + x2 + x3 - x4) * t;
488 x2 = (x1 + x2 - x3 + x4) * t;
489 x3 = (x1 - x2 + x3 + x4) * t;
490 x4 = (x1 + x2 + x3 + x4) * t;
492 in general loads the high bits of the addresses of x2-x4 and i into registers
493 outside the loop. Whenever extended registers are used, it loads all of
494 these inside the loop. My conjecture is that since the 88110 has so many
495 registers, and gcc makes no distinction at this point -- just that they are
496 not fixed, that in loop.c it believes it can expect a number of registers
497 to be available. Then it allocates 'too many' in local-alloc which causes
498 problems later. 'Too many' are allocated because a large portion of the
499 registers are extended registers and cannot be used for certain purposes
500 ( e.g. hold the address of a variable). When this loop is compiled on its
501 own, the problem does not occur. I don't know the solution yet, though it
502 is probably in the base sources. Possibly a different way to calculate
505 /* 1 for registers that have pervasive standard uses and are not available
506 for the register allocator. Registers r14-r25 and x22-x29 are expected
507 to be preserved across function calls.
509 On the 88000, the standard uses of the General Register File (GRF) are:
510 Reg 0 = Pseudo argument pointer (hardware fixed to 0).
511 Reg 1 = Subroutine return pointer (hardware).
512 Reg 2-9 = Parameter registers (OCS).
513 Reg 10 = OCS reserved temporary.
514 Reg 11 = Static link if needed [OCS reserved temporary].
515 Reg 12 = Address of structure return (OCS).
516 Reg 13 = OCS reserved temporary.
517 Reg 14-25 = Preserved register set.
518 Reg 26-29 = Reserved by OCS and ABI.
519 Reg 30 = Frame pointer (Common use).
520 Reg 31 = Stack pointer.
522 The following follows the current 88open UCS specification for the
523 Extended Register File (XRF):
524 Reg 32 = x0 Always equal to zero
525 Reg 33-53 = x1-x21 Temporary registers (Caller Save)
526 Reg 54-61 = x22-x29 Preserver registers (Callee Save)
527 Reg 62-63 = x30-x31 Reserved for future ABI use.
529 Note: The current 88110 extended register mapping is subject to change.
530 The bias towards caller-save registers is based on the
531 presumption that memory traffic can potentially be reduced by
532 allowing the "caller" to save only that part of the register
533 which is actually being used. (i.e. don't do a st.x if a st.d
534 is sufficient). Also, in scientific code (a.k.a. Fortran), the
535 large number of variables defined in common blocks may require
536 that almost all registers be saved across calls anyway. */
538 #define FIXED_REGISTERS \
539 {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
540 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
541 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
542 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1}
544 /* 1 for registers not available across function calls.
545 These must include the FIXED_REGISTERS and also any
546 registers that can be used without being saved.
547 The latter must include the registers where values are returned
548 and the register where structure-value addresses are passed.
549 Aside from that, you can include as many other registers as you like. */
551 #define CALL_USED_REGISTERS \
552 {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, \
553 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
554 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
555 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1}
557 /* Macro to conditionally modify fixed_regs/call_used_regs. */
558 #define CONDITIONAL_REGISTER_USAGE \
560 if (! TARGET_88110) \
563 for (i = FIRST_EXTENDED_REGISTER; i < FIRST_PSEUDO_REGISTER; i++) \
566 call_used_regs[i] = 1; \
571 /* Current hack to deal with -fpic -O2 problems. */ \
572 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
573 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
574 global_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
578 /* True if register is an extended register. */
579 #define XRF_REGNO_P(N) ((N) < FIRST_PSEUDO_REGISTER && (N) >= FIRST_EXTENDED_REGISTER)
581 /* Return number of consecutive hard regs needed starting at reg REGNO
582 to hold something of mode MODE.
583 This is ordinarily the length in words of a value of mode MODE
584 but can be less for certain modes in special long registers.
586 On the m88000, GRF registers hold 32-bits and XRF registers hold 80-bits.
587 An XRF register can hold any mode, but two GRF registers are required
589 #define HARD_REGNO_NREGS(REGNO, MODE) \
590 (XRF_REGNO_P (REGNO) \
591 ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
593 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
595 For double integers, we never put the value into an odd register so that
596 the operators don't run into the situation where the high part of one of
597 the inputs is the low part of the result register. (It's ok if the output
598 registers are the same as the input registers.) The XRF registers can
599 hold all modes, but only DF and SF modes can be manipulated in these
600 registers. The compiler should be allowed to use these as a fast spill
602 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
603 (XRF_REGNO_P(REGNO) \
604 ? (TARGET_88110 && GET_MODE_CLASS (MODE) == MODE_FLOAT) \
605 : (((MODE) != DImode && (MODE) != DFmode && (MODE) != DCmode) \
606 || ((REGNO) & 1) == 0))
608 /* Value is 1 if it is a good idea to tie two pseudo registers
609 when one has mode MODE1 and one has mode MODE2.
610 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
611 for any hard reg, then this must be 0 for correct output. */
612 #define MODES_TIEABLE_P(MODE1, MODE2) \
613 (((MODE1) == DFmode || (MODE1) == DCmode || (MODE1) == DImode \
614 || (TARGET_88110 && GET_MODE_CLASS (MODE1) == MODE_FLOAT)) \
615 == ((MODE2) == DFmode || (MODE2) == DCmode || (MODE2) == DImode \
616 || (TARGET_88110 && GET_MODE_CLASS (MODE2) == MODE_FLOAT)))
618 /* Specify the registers used for certain standard purposes.
619 The values of these macros are register numbers. */
621 /* the m88000 pc isn't overloaded on a register that the compiler knows about. */
622 /* #define PC_REGNUM */
624 /* Register to use for pushing function arguments. */
625 #define STACK_POINTER_REGNUM 31
627 /* Base register for access to local variables of the function. */
628 #define FRAME_POINTER_REGNUM 30
630 /* Base register for access to arguments of the function. */
631 #define ARG_POINTER_REGNUM 0
633 /* Register used in cases where a temporary is known to be safe to use. */
634 #define TEMP_REGNUM 10
636 /* Register in which static-chain is passed to a function. */
637 #define STATIC_CHAIN_REGNUM 11
639 /* Register in which address to store a structure value
640 is passed to a function. */
641 #define STRUCT_VALUE_REGNUM 12
643 /* Register to hold the addressing base for position independent
644 code access to data items. */
645 #define PIC_OFFSET_TABLE_REGNUM 25
647 /* Order in which registers are preferred (most to least). Use temp
648 registers, then param registers top down. Preserve registers are
649 top down to maximize use of double memory ops for register save.
650 The 88open reserved registers (r26-r29 and x30-x31) may commonly be used
651 in most environments with the -fcall-used- or -fcall-saved- options. */
652 #define REG_ALLOC_ORDER \
654 13, 12, 11, 10, 29, 28, 27, 26, \
655 62, 63, 9, 8, 7, 6, 5, 4, \
656 3, 2, 1, 53, 52, 51, 50, 49, \
657 48, 47, 46, 45, 44, 43, 42, 41, \
658 40, 39, 38, 37, 36, 35, 34, 33, \
659 25, 24, 23, 22, 21, 20, 19, 18, \
660 17, 16, 15, 14, 61, 60, 59, 58, \
661 57, 56, 55, 54, 30, 31, 0, 32}
663 /* Order for leaf functions. */
664 #define REG_LEAF_ALLOC_ORDER \
666 9, 8, 7, 6, 13, 12, 11, 10, \
667 29, 28, 27, 26, 62, 63, 5, 4, \
668 3, 2, 0, 53, 52, 51, 50, 49, \
669 48, 47, 46, 45, 44, 43, 42, 41, \
670 40, 39, 38, 37, 36, 35, 34, 33, \
671 25, 24, 23, 22, 21, 20, 19, 18, \
672 17, 16, 15, 14, 61, 60, 59, 58, \
673 57, 56, 55, 54, 30, 31, 1, 32}
675 /* Switch between the leaf and non-leaf orderings. The purpose is to avoid
676 write-over scoreboard delays between caller and callee. */
677 #define ORDER_REGS_FOR_LOCAL_ALLOC \
679 static const int leaf[] = REG_LEAF_ALLOC_ORDER; \
680 static const int nonleaf[] = REG_ALLOC_ORDER; \
682 memcpy (reg_alloc_order, regs_ever_live[1] ? nonleaf : leaf, \
683 FIRST_PSEUDO_REGISTER * sizeof (int)); \
686 /*** Register Classes ***/
688 /* Define the classes of registers for register constraints in the
689 machine description. Also define ranges of constants.
691 One of the classes must always be named ALL_REGS and include all hard regs.
692 If there is more than one class, another class must be named NO_REGS
693 and contain no registers.
695 The name GENERAL_REGS must be the name of a class (or an alias for
696 another name such as ALL_REGS). This is the class of registers
697 that is allowed by "g" or "r" in a register constraint.
698 Also, registers outside this class are allocated only when
699 instructions express preferences for them.
701 The classes must be numbered in nondecreasing order; that is,
702 a larger-numbered class must never be contained completely
703 in a smaller-numbered class.
705 For any two classes, it is very desirable that there be another
706 class that represents their union. */
708 /* The m88000 hardware has two kinds of registers. In addition, we denote
709 the arg pointer as a separate class. */
711 enum reg_class { NO_REGS, AP_REG, XRF_REGS, GENERAL_REGS, AGRF_REGS,
712 XGRF_REGS, ALL_REGS, LIM_REG_CLASSES };
714 #define N_REG_CLASSES (int) LIM_REG_CLASSES
716 /* Give names of register classes as strings for dump file. */
717 #define REG_CLASS_NAMES {"NO_REGS", "AP_REG", "XRF_REGS", "GENERAL_REGS", \
718 "AGRF_REGS", "XGRF_REGS", "ALL_REGS" }
720 /* Define which registers fit in which classes.
721 This is an initializer for a vector of HARD_REG_SET
722 of length N_REG_CLASSES. */
723 #define REG_CLASS_CONTENTS {{0x00000000, 0x00000000}, \
724 {0x00000001, 0x00000000}, \
725 {0x00000000, 0xffffffff}, \
726 {0xfffffffe, 0x00000000}, \
727 {0xffffffff, 0x00000000}, \
728 {0xfffffffe, 0xffffffff}, \
729 {0xffffffff, 0xffffffff}}
731 /* The same information, inverted:
732 Return the class number of the smallest class containing
733 reg number REGNO. This could be a conditional expression
734 or could index an array. */
735 #define REGNO_REG_CLASS(REGNO) \
736 ((REGNO) ? ((REGNO < 32) ? GENERAL_REGS : XRF_REGS) : AP_REG)
738 /* The class value for index registers, and the one for base regs. */
739 #define BASE_REG_CLASS AGRF_REGS
740 #define INDEX_REG_CLASS GENERAL_REGS
742 /* Get reg_class from a letter such as appears in the machine description.
743 For the 88000, the following class/letter is defined for the XRF:
744 x - Extended register file */
745 #define REG_CLASS_FROM_LETTER(C) \
746 (((C) == 'x') ? XRF_REGS : NO_REGS)
748 /* Macros to check register numbers against specific register classes.
749 These assume that REGNO is a hard or pseudo reg number.
750 They give nonzero only if REGNO is a hard reg of the suitable class
751 or a pseudo reg currently allocated to a suitable hard reg.
752 Since they use reg_renumber, they are safe only once reg_renumber
753 has been allocated, which happens in local-alloc.c. */
754 #define REGNO_OK_FOR_BASE_P(REGNO) \
755 ((REGNO) < FIRST_EXTENDED_REGISTER \
756 || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER)
757 #define REGNO_OK_FOR_INDEX_P(REGNO) \
758 (((REGNO) && (REGNO) < FIRST_EXTENDED_REGISTER) \
759 || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER)
761 /* Given an rtx X being reloaded into a reg required to be
762 in class CLASS, return the class of reg to actually use.
763 In general this is just CLASS; but on some machines
764 in some cases it is preferable to use a more restrictive class.
765 Double constants should be in a register iff they can be made cheaply. */
766 #define PREFERRED_RELOAD_CLASS(X,CLASS) \
767 (CONSTANT_P(X) && (CLASS == XRF_REGS) ? NO_REGS : (CLASS))
769 /* Return the register class of a scratch register needed to load IN
770 into a register of class CLASS in MODE. On the m88k, when PIC, we
771 need a temporary when loading some addresses into a register. */
772 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
774 && GET_CODE (IN) == CONST \
775 && GET_CODE (XEXP (IN, 0)) == PLUS \
776 && GET_CODE (XEXP (XEXP (IN, 0), 0)) == CONST_INT \
777 && ! SMALL_INT (XEXP (XEXP (IN, 0), 1))) ? GENERAL_REGS : NO_REGS)
779 /* Return the maximum number of consecutive registers
780 needed to represent mode MODE in a register of class CLASS. */
781 #define CLASS_MAX_NREGS(CLASS, MODE) \
782 ((((CLASS) == XRF_REGS) ? 1 \
783 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)))
785 /* Letters in the range `I' through `P' in a register constraint string can
786 be used to stand for particular ranges of immediate operands. The C
787 expression is true iff C is a known letter and VALUE is appropriate for
790 For the m88000, the following constants are used:
791 `I' requires a non-negative 16-bit value.
792 `J' requires a non-positive 16-bit value.
793 `K' requires a non-negative value < 32.
794 `L' requires a constant with only the upper 16-bits set.
795 `M' requires constant values that can be formed with `set'.
796 `N' requires a negative value.
798 `P' requires a non-negative value. */
800 /* Quick tests for certain values. */
801 #define SMALL_INT(X) (SMALL_INTVAL (INTVAL (X)))
802 #define SMALL_INTVAL(I) ((unsigned) (I) < 0x10000)
803 #define ADD_INT(X) (ADD_INTVAL (INTVAL (X)))
804 #define ADD_INTVAL(I) ((unsigned) (I) + 0xffff < 0x1ffff)
805 #define POWER_OF_2(I) ((I) && POWER_OF_2_or_0(I))
806 #define POWER_OF_2_or_0(I) (((I) & ((unsigned)(I) - 1)) == 0)
808 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
809 ((C) == 'I' ? SMALL_INTVAL (VALUE) \
810 : (C) == 'J' ? SMALL_INTVAL (-(VALUE)) \
811 : (C) == 'K' ? (unsigned)(VALUE) < 32 \
812 : (C) == 'L' ? ((VALUE) & 0xffff) == 0 \
813 : (C) == 'M' ? integer_ok_for_set (VALUE) \
814 : (C) == 'N' ? (VALUE) < 0 \
815 : (C) == 'O' ? (VALUE) == 0 \
816 : (C) == 'P' ? (VALUE) >= 0 \
819 /* Similar, but for floating constants, and defining letters G and H.
820 Here VALUE is the CONST_DOUBLE rtx itself. For the m88000, the
821 constraints are: `G' requires zero, and `H' requires one or two. */
822 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
823 ((C) == 'G' ? (CONST_DOUBLE_HIGH (VALUE) == 0 \
824 && CONST_DOUBLE_LOW (VALUE) == 0) \
827 /* Letters in the range `Q' through `U' in a register constraint string
828 may be defined in a machine-dependent fashion to stand for arbitrary
831 For the m88k, `Q' handles addresses in a call context. */
833 #define EXTRA_CONSTRAINT(OP, C) \
834 ((C) == 'Q' ? symbolic_address_p (OP) : 0)
836 /*** Describing Stack Layout ***/
838 /* Define this if pushing a word on the stack moves the stack pointer
839 to a smaller address. */
840 #define STACK_GROWS_DOWNWARD
842 /* Define this if the addresses of local variable slots are at negative
843 offsets from the frame pointer. */
844 /* #define FRAME_GROWS_DOWNWARD */
846 /* Offset from the frame pointer to the first local variable slot to be
847 allocated. For the m88k, the debugger wants the return address (r1)
848 stored at location r30+4, and the previous frame pointer stored at
850 #define STARTING_FRAME_OFFSET 8
852 /* If we generate an insn to push BYTES bytes, this says how many the
853 stack pointer really advances by. The m88k has no push instruction. */
854 /* #define PUSH_ROUNDING(BYTES) */
856 /* If defined, the maximum amount of space required for outgoing arguments
857 will be computed and placed into the variable
858 `current_function_outgoing_args_size'. No space will be pushed
859 onto the stack for each call; instead, the function prologue should
860 increase the stack frame size by this amount. */
861 #define ACCUMULATE_OUTGOING_ARGS 1
863 /* Offset from the stack pointer register to the first location at which
864 outgoing arguments are placed. Use the default value zero. */
865 /* #define STACK_POINTER_OFFSET 0 */
867 /* Offset of first parameter from the argument pointer register value.
868 Using an argument pointer, this is 0 for the m88k. GCC knows
869 how to eliminate the argument pointer references if necessary. */
870 #define FIRST_PARM_OFFSET(FNDECL) 0
872 /* Define this if functions should assume that stack space has been
873 allocated for arguments even when their values are passed in
876 The value of this macro is the size, in bytes, of the area reserved for
877 arguments passed in registers.
879 This space can either be allocated by the caller or be a part of the
880 machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE'
882 #define REG_PARM_STACK_SPACE(FNDECL) 32
884 /* Define this macro if REG_PARM_STACK_SPACE is defined but stack
885 parameters don't skip the area specified by REG_PARM_STACK_SPACE.
886 Normally, when a parameter is not passed in registers, it is placed on
887 the stack beyond the REG_PARM_STACK_SPACE area. Defining this macro
888 suppresses this behavior and causes the parameter to be passed on the
889 stack in its natural location. */
890 #define STACK_PARMS_IN_REG_PARM_AREA
892 /* Define this if it is the responsibility of the caller to allocate the
893 area reserved for arguments passed in registers. If
894 `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect of this
895 macro is to determine whether the space is included in
896 `current_function_outgoing_args_size'. */
897 /* #define OUTGOING_REG_PARM_STACK_SPACE */
899 /* Offset from the stack pointer register to an item dynamically allocated
900 on the stack, e.g., by `alloca'.
902 The default value for this macro is `STACK_POINTER_OFFSET' plus the
903 length of the outgoing arguments. The default is correct for most
904 machines. See `function.c' for details. */
905 /* #define STACK_DYNAMIC_OFFSET(FUNDECL) ... */
907 /* Value is the number of bytes of arguments automatically
908 popped when returning from a subroutine call.
909 FUNDECL is the declaration node of the function (as a tree),
910 FUNTYPE is the data type of the function (as a tree),
911 or for a library call it is an identifier node for the subroutine name.
912 SIZE is the number of bytes of arguments passed on the stack. */
913 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
915 /* Define how to find the value returned by a function.
916 VALTYPE is the data type of the value (as a tree).
917 If the precise function being called is known, FUNC is its FUNCTION_DECL;
918 otherwise, FUNC is 0. */
919 #define FUNCTION_VALUE(VALTYPE, FUNC) \
920 gen_rtx_REG (TYPE_MODE (VALTYPE) == BLKmode ? SImode : TYPE_MODE (VALTYPE), \
923 /* Define this if it differs from FUNCTION_VALUE. */
924 /* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) ... */
926 /* Disable the promotion of some structures and unions to registers. */
927 #define RETURN_IN_MEMORY(TYPE) \
928 (TYPE_MODE (TYPE) == BLKmode \
929 || ((TREE_CODE (TYPE) == RECORD_TYPE || TREE_CODE(TYPE) == UNION_TYPE) \
930 && !(TYPE_MODE (TYPE) == SImode \
931 || (TYPE_MODE (TYPE) == BLKmode \
932 && TYPE_ALIGN (TYPE) == BITS_PER_WORD \
933 && int_size_in_bytes (TYPE) == UNITS_PER_WORD))))
935 /* Don't default to pcc-struct-return, because we have already specified
936 exactly how to return structures in the RETURN_IN_MEMORY macro. */
937 #define DEFAULT_PCC_STRUCT_RETURN 0
939 /* Define how to find the value returned by a library function
940 assuming the value has mode MODE. */
941 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 2)
943 /* True if N is a possible register number for a function value
944 as seen by the caller. */
945 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2)
947 /* Determine whether a function argument is passed in a register, and
948 which register. See m88k.c. */
949 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
950 m88k_function_arg (CUM, MODE, TYPE, NAMED)
952 /* Define this if it differs from FUNCTION_ARG. */
953 /* #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) ... */
955 /* A C expression for the number of words, at the beginning of an
956 argument, must be put in registers. The value must be zero for
957 arguments that are passed entirely in registers or that are entirely
958 pushed on the stack. */
959 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0)
961 /* A C expression that indicates when an argument must be passed by
962 reference. If nonzero for an argument, a copy of that argument is
963 made in memory and a pointer to the argument is passed instead of the
964 argument itself. The pointer is passed in whatever way is appropriate
965 for passing a pointer to that type. */
966 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) (0)
968 /* A C type for declaring a variable that is used as the first argument
969 of `FUNCTION_ARG' and other related values. It suffices to count
970 the number of words of argument so far. */
971 #define CUMULATIVE_ARGS int
973 /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to a
974 function whose data type is FNTYPE. For a library call, FNTYPE is 0. */
975 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) ((CUM) = 0)
977 /* A C statement (sans semicolon) to update the summarizer variable
978 CUM to advance past an argument in the argument list. The values
979 MODE, TYPE and NAMED describe that argument. Once this is done,
980 the variable CUM is suitable for analyzing the *following* argument
981 with `FUNCTION_ARG', etc. (TYPE is null for libcalls where that
982 information may not be available.) */
983 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
985 enum machine_mode __mode = (TYPE) ? TYPE_MODE (TYPE) : (MODE); \
987 && (__mode == DImode || __mode == DFmode \
988 || ((TYPE) && TYPE_ALIGN (TYPE) > BITS_PER_WORD))) \
990 CUM += (((__mode != BLKmode) \
991 ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE)) \
995 /* True if N is a possible register number for function argument passing.
996 On the m88000, these are registers 2 through 9. */
997 #define FUNCTION_ARG_REGNO_P(N) ((N) <= 9 && (N) >= 2)
999 /* A C expression which determines whether, and in which direction,
1000 to pad out an argument with extra space. The value should be of
1001 type `enum direction': either `upward' to pad above the argument,
1002 `downward' to pad below, or `none' to inhibit padding.
1004 This macro does not control the *amount* of padding; that is always
1005 just enough to reach the next multiple of `FUNCTION_ARG_BOUNDARY'. */
1006 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1007 ((MODE) == BLKmode \
1008 || ((TYPE) && (TREE_CODE (TYPE) == RECORD_TYPE \
1009 || TREE_CODE (TYPE) == UNION_TYPE)) \
1010 ? upward : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY ? downward : none)
1012 /* If defined, a C expression that gives the alignment boundary, in bits,
1013 of an argument with the specified mode and type. If it is not defined,
1014 `PARM_BOUNDARY' is used for all arguments. */
1015 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
1016 (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) <= PARM_BOUNDARY \
1017 ? PARM_BOUNDARY : 2 * PARM_BOUNDARY)
1019 /* Generate necessary RTL for __builtin_saveregs().
1020 ARGLIST is the argument list; see expr.c. */
1021 #define EXPAND_BUILTIN_SAVEREGS() m88k_builtin_saveregs ()
1023 /* Define the `__builtin_va_list' type for the ABI. */
1024 #define BUILD_VA_LIST_TYPE(VALIST) \
1025 (VALIST) = m88k_build_va_list ()
1027 /* Implement `va_start' for varargs and stdarg. */
1028 #define EXPAND_BUILTIN_VA_START(valist, nextarg) \
1029 m88k_va_start (valist, nextarg)
1031 /* Implement `va_arg'. */
1032 #define EXPAND_BUILTIN_VA_ARG(valist, type) \
1033 m88k_va_arg (valist, type)
1035 /* Output assembler code to FILE to increment profiler label # LABELNO
1036 for profiling a function entry. Redefined in sysv3.h, sysv4.h and
1038 #define FUNCTION_PROFILER(FILE, LABELNO) \
1039 output_function_profiler (FILE, LABELNO, "mcount", 1)
1041 /* Maximum length in instructions of the code output by FUNCTION_PROFILER. */
1042 #define FUNCTION_PROFILER_LENGTH (5+3+1+5)
1044 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1045 the stack pointer does not matter. The value is tested only in
1046 functions that have frame pointers.
1047 No definition is equivalent to always zero. */
1048 #define EXIT_IGNORE_STACK (1)
1050 /* Value should be nonzero if functions must have frame pointers.
1051 Zero means the frame pointer need not be set up (and parms
1052 may be accessed via the stack pointer) in functions that seem suitable.
1053 This is computed in `reload', in reload1.c. */
1054 #define FRAME_POINTER_REQUIRED \
1055 ((TARGET_OMIT_LEAF_FRAME_POINTER && !leaf_function_p ()) \
1056 || (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION))
1058 /* Definitions for register eliminations.
1060 We have two registers that can be eliminated on the m88k. First, the
1061 frame pointer register can often be eliminated in favor of the stack
1062 pointer register. Secondly, the argument pointer register can always be
1063 eliminated; it is replaced with either the stack or frame pointer. */
1065 /* This is an array of structures. Each structure initializes one pair
1066 of eliminable registers. The "from" register number is given first,
1067 followed by "to". Eliminations of the same "from" register are listed
1068 in order of preference. */
1069 #define ELIMINABLE_REGS \
1070 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1071 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
1072 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
1074 /* Given FROM and TO register numbers, say whether this elimination
1076 #define CAN_ELIMINATE(FROM, TO) \
1077 (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
1079 /* Define the offset between two registers, one to be eliminated, and the other
1080 its replacement, at the start of a routine. */
1081 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1082 { m88k_layout_frame (); \
1083 if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
1084 (OFFSET) = m88k_fp_offset; \
1085 else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \
1086 (OFFSET) = m88k_stack_size - m88k_fp_offset; \
1087 else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
1088 (OFFSET) = m88k_stack_size; \
1093 /*** Trampolines for Nested Functions ***/
1095 /* Output assembler code for a block containing the constant parts
1096 of a trampoline, leaving space for the variable parts.
1098 This block is placed on the stack and filled in. It is aligned
1099 0 mod 128 and those portions that are executed are constant.
1100 This should work for instruction caches that have cache lines up
1101 to the aligned amount (128 is arbitrary), provided no other code
1102 producer is attempting to play the same game. This of course is
1103 in violation of any number of 88open standards. */
1105 #define TRAMPOLINE_TEMPLATE(FILE) \
1108 static int labelno = 0; \
1110 ASM_GENERATE_INTERNAL_LABEL (buf, "LTRMP", labelno); \
1111 /* Save the return address (r1) in the static chain reg (r11). */ \
1112 fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[11], reg_names[1]); \
1113 /* Locate this block; transfer to the next instruction. */ \
1114 fprintf (FILE, "\tbsr\t %s\n", &buf[1]); \
1115 ASM_OUTPUT_INTERNAL_LABEL (FILE, "LTRMP", labelno); \
1116 /* Save r10; use it as the relative pointer; restore r1. */ \
1117 fprintf (FILE, "\tst\t %s,%s,24\n", reg_names[10], reg_names[1]); \
1118 fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[10], reg_names[1]); \
1119 fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[1], reg_names[11]); \
1120 /* Load the function's address and go there. */ \
1121 fprintf (FILE, "\tld\t %s,%s,32\n", reg_names[11], reg_names[10]); \
1122 fprintf (FILE, "\tjmp.n\t %s\n", reg_names[11]); \
1123 /* Restore r10 and load the static chain register. */ \
1124 fprintf (FILE, "\tld.d\t %s,%s,24\n", reg_names[10], reg_names[10]); \
1125 /* Storage: r10 save area, static chain, function address. */ \
1126 assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
1127 assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
1128 assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
1131 /* Length in units of the trampoline for entering a nested function.
1132 This is really two components. The first 32 bytes are fixed and
1133 must be copied; the last 12 bytes are just storage that's filled
1134 in later. So for allocation purposes, it's 32+12 bytes, but for
1135 initialization purposes, it's 32 bytes. */
1137 #define TRAMPOLINE_SIZE (32+12)
1139 /* Alignment required for a trampoline. 128 is used to find the
1140 beginning of a line in the instruction cache and to allow for
1141 instruction cache lines of up to 128 bytes. */
1143 #define TRAMPOLINE_ALIGNMENT 128
1145 /* Emit RTL insns to initialize the variable parts of a trampoline.
1146 FNADDR is an RTX for the address of the function's pure code.
1147 CXT is an RTX for the static chain value for the function. */
1149 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1151 emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 40)), FNADDR); \
1152 emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 36)), CXT); \
1155 /*** Library Subroutine Names ***/
1157 /* Define this macro if GNU CC should generate calls to the System V
1158 (and ANSI C) library functions `memcpy' and `memset' rather than
1159 the BSD functions `bcopy' and `bzero'. */
1160 #define TARGET_MEM_FUNCTIONS
1162 /*** Addressing Modes ***/
1164 #define SELECT_CC_MODE(OP,X,Y) CCmode
1166 /* #define HAVE_POST_INCREMENT 0 */
1167 /* #define HAVE_POST_DECREMENT 0 */
1169 /* #define HAVE_PRE_DECREMENT 0 */
1170 /* #define HAVE_PRE_INCREMENT 0 */
1172 /* Recognize any constant value that is a valid address.
1173 When PIC, we do not accept an address that would require a scratch reg
1174 to load into a register. */
1176 #define CONSTANT_ADDRESS_P(X) \
1177 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
1178 || GET_CODE (X) == CONST_INT || GET_CODE (X) == HIGH \
1179 || (GET_CODE (X) == CONST \
1180 && ! (flag_pic && pic_address_needs_scratch (X))))
1183 /* Maximum number of registers that can appear in a valid memory address. */
1184 #define MAX_REGS_PER_ADDRESS 2
1186 /* The condition for memory shift insns. */
1187 #define SCALED_ADDRESS_P(ADDR) \
1188 (GET_CODE (ADDR) == PLUS \
1189 && (GET_CODE (XEXP (ADDR, 0)) == MULT \
1190 || GET_CODE (XEXP (ADDR, 1)) == MULT))
1192 /* Can the reference to X be made short? */
1193 #define SHORT_ADDRESS_P(X,TEMP) \
1194 ((TEMP) = (GET_CODE (X) == CONST ? get_related_value (X) : X), \
1195 ((TEMP) && GET_CODE (TEMP) == SYMBOL_REF && SYMBOL_REF_FLAG (TEMP)))
1197 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
1198 that is a valid memory address for an instruction.
1199 The MODE argument is the machine mode for the MEM expression
1200 that wants to use this address.
1202 On the m88000, a legitimate address has the form REG, REG+REG,
1203 REG+SMALLINT, REG+(REG*modesize) (REG[REG]), or SMALLINT.
1205 The register elimination process should deal with the argument
1206 pointer and frame pointer changing to REG+SMALLINT. */
1208 #define LEGITIMATE_INDEX_P(X, MODE) \
1209 ((GET_CODE (X) == CONST_INT \
1212 && REG_OK_FOR_INDEX_P (X)) \
1213 || (GET_CODE (X) == MULT \
1214 && REG_P (XEXP (X, 0)) \
1215 && REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
1216 && GET_CODE (XEXP (X, 1)) == CONST_INT \
1217 && INTVAL (XEXP (X, 1)) == GET_MODE_SIZE (MODE)))
1219 #define RTX_OK_FOR_BASE_P(X) \
1220 ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
1221 || (GET_CODE (X) == SUBREG \
1222 && GET_CODE (SUBREG_REG (X)) == REG \
1223 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
1225 #define RTX_OK_FOR_INDEX_P(X) \
1226 ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \
1227 || (GET_CODE (X) == SUBREG \
1228 && GET_CODE (SUBREG_REG (X)) == REG \
1229 && REG_OK_FOR_INDEX_P (SUBREG_REG (X))))
1231 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1236 if (REG_OK_FOR_BASE_P (X)) \
1239 else if (GET_CODE (X) == PLUS) \
1241 register rtx _x0 = XEXP (X, 0); \
1242 register rtx _x1 = XEXP (X, 1); \
1244 && _x0 == pic_offset_table_rtx \
1246 ? RTX_OK_FOR_BASE_P (_x1) \
1247 : (GET_CODE (_x1) == SYMBOL_REF \
1248 || GET_CODE (_x1) == LABEL_REF))) \
1250 && (REG_OK_FOR_BASE_P (_x0) \
1251 && LEGITIMATE_INDEX_P (_x1, MODE))) \
1253 && (REG_OK_FOR_BASE_P (_x1) \
1254 && LEGITIMATE_INDEX_P (_x0, MODE)))) \
1257 else if (GET_CODE (X) == LO_SUM) \
1259 register rtx _x0 = XEXP (X, 0); \
1260 register rtx _x1 = XEXP (X, 1); \
1262 && REG_OK_FOR_BASE_P (_x0)) \
1263 || (GET_CODE (_x0) == SUBREG \
1264 && REG_P (SUBREG_REG (_x0)) \
1265 && REG_OK_FOR_BASE_P (SUBREG_REG (_x0)))) \
1266 && CONSTANT_P (_x1)) \
1269 else if (GET_CODE (X) == CONST_INT \
1272 else if (SHORT_ADDRESS_P (X, _x)) \
1276 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
1277 and check its validity for a certain class.
1278 We have two alternate definitions for each of them.
1279 The usual definition accepts all pseudo regs; the other rejects
1280 them unless they have been allocated suitable hard regs.
1281 The symbol REG_OK_STRICT causes the latter definition to be used.
1283 Most source files want to accept pseudo regs in the hope that
1284 they will get allocated to the class that the insn wants them to be in.
1285 Source files for reload pass need to be strict.
1286 After reload, it makes no difference, since pseudo regs have
1287 been eliminated by then. */
1289 #ifndef REG_OK_STRICT
1291 /* Nonzero if X is a hard reg that can be used as an index
1292 or if it is a pseudo reg. Not the argument pointer. */
1293 #define REG_OK_FOR_INDEX_P(X) \
1294 (!XRF_REGNO_P(REGNO (X)))
1295 /* Nonzero if X is a hard reg that can be used as a base reg
1296 or if it is a pseudo reg. */
1297 #define REG_OK_FOR_BASE_P(X) (REG_OK_FOR_INDEX_P (X))
1301 /* Nonzero if X is a hard reg that can be used as an index. */
1302 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1303 /* Nonzero if X is a hard reg that can be used as a base reg. */
1304 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1308 /* Try machine-dependent ways of modifying an illegitimate address
1309 to be legitimate. If we find one, return the new, valid address.
1310 This macro is used in only one place: `memory_address' in explow.c.
1312 OLDX is the address as it was before break_out_memory_refs was called.
1313 In some cases it is useful to look at this to decide what needs to be done.
1315 MODE and WIN are passed so that this macro can use
1316 GO_IF_LEGITIMATE_ADDRESS.
1318 It is always safe for this macro to do nothing. It exists to recognize
1319 opportunities to optimize the output. */
1321 /* On the m88000, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */
1323 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
1325 if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \
1326 (X) = gen_rtx_PLUS (SImode, XEXP (X, 0), \
1327 copy_to_mode_reg (SImode, XEXP (X, 1))); \
1328 if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
1329 (X) = gen_rtx_PLUS (SImode, XEXP (X, 1), \
1330 copy_to_mode_reg (SImode, XEXP (X, 0))); \
1331 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \
1332 (X) = gen_rtx_PLUS (SImode, XEXP (X, 1), \
1333 force_operand (XEXP (X, 0), 0)); \
1334 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \
1335 (X) = gen_rtx_PLUS (SImode, XEXP (X, 0), \
1336 force_operand (XEXP (X, 1), 0)); \
1337 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == PLUS) \
1338 (X) = gen_rtx_PLUS (Pmode, force_operand (XEXP (X, 0), NULL_RTX),\
1340 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == PLUS) \
1341 (X) = gen_rtx_PLUS (Pmode, XEXP (X, 0), \
1342 force_operand (XEXP (X, 1), NULL_RTX)); \
1343 if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
1344 || GET_CODE (X) == LABEL_REF) \
1345 (X) = legitimize_address (flag_pic, X, 0, 0); \
1346 if (memory_address_p (MODE, X)) \
1349 /* Go to LABEL if ADDR (a legitimate address expression)
1350 has an effect that depends on the machine mode it is used for.
1351 On the m88000 this is never true. */
1353 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
1355 /* Nonzero if the constant value X is a legitimate general operand.
1356 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
1357 #define LEGITIMATE_CONSTANT_P(X) (1)
1359 /* Define this, so that when PIC, reload won't try to reload invalid
1360 addresses which require two reload registers. */
1362 #define LEGITIMATE_PIC_OPERAND_P(X) (! pic_address_needs_scratch (X))
1365 /*** Condition Code Information ***/
1367 /* C code for a data type which is used for declaring the `mdep'
1368 component of `cc_status'. It defaults to `int'. */
1369 /* #define CC_STATUS_MDEP int */
1371 /* A C expression to initialize the `mdep' field to "empty". */
1372 /* #define CC_STATUS_MDEP_INIT (cc_status.mdep = 0) */
1374 /* Macro to zap the normal portions of CC_STATUS, but leave the
1375 machine dependent parts (ie, literal synthesis) alone. */
1376 /* #define CC_STATUS_INIT_NO_MDEP \
1377 (cc_status.flags = 0, cc_status.value1 = 0, cc_status.value2 = 0) */
1379 /* When using a register to hold the condition codes, the cc_status
1380 mechanism cannot be used. */
1381 #define NOTICE_UPDATE_CC(EXP, INSN) (0)
1383 /*** Miscellaneous Parameters ***/
1385 /* Define the codes that are matched by predicates in m88k.c. */
1386 #define PREDICATE_CODES \
1387 {"move_operand", {SUBREG, REG, CONST_INT, LO_SUM, MEM}}, \
1388 {"call_address_operand", {SUBREG, REG, SYMBOL_REF, LABEL_REF, CONST}}, \
1389 {"arith_operand", {SUBREG, REG, CONST_INT}}, \
1390 {"arith5_operand", {SUBREG, REG, CONST_INT}}, \
1391 {"arith32_operand", {SUBREG, REG, CONST_INT}}, \
1392 {"arith64_operand", {SUBREG, REG, CONST_INT}}, \
1393 {"int5_operand", {CONST_INT}}, \
1394 {"int32_operand", {CONST_INT}}, \
1395 {"add_operand", {SUBREG, REG, CONST_INT}}, \
1396 {"reg_or_bbx_mask_operand", {SUBREG, REG, CONST_INT}}, \
1397 {"real_or_0_operand", {SUBREG, REG, CONST_DOUBLE}}, \
1398 {"reg_or_0_operand", {SUBREG, REG, CONST_INT}}, \
1399 {"relop", {EQ, NE, LT, LE, GE, GT, LTU, LEU, GEU, GTU}}, \
1400 {"even_relop", {EQ, LT, GT, LTU, GTU}}, \
1401 {"odd_relop", { NE, LE, GE, LEU, GEU}}, \
1402 {"partial_ccmode_register_operand", { SUBREG, REG}}, \
1403 {"relop_no_unsigned", {EQ, NE, LT, LE, GE, GT}}, \
1404 {"equality_op", {EQ, NE}}, \
1405 {"pc_or_label_ref", {PC, LABEL_REF}},
1407 /* A list of predicates that do special things with modes, and so
1408 should not elicit warnings for VOIDmode match_operand. */
1410 #define SPECIAL_MODE_PREDICATES \
1411 "partial_ccmode_register_operand", \
1414 /* The case table contains either words or branch instructions. This says
1415 which. We always claim that the vector is PC-relative. It is position
1416 independent when -fpic is used. */
1417 #define CASE_VECTOR_INSNS (TARGET_88100 || flag_pic)
1419 /* An alias for a machine mode name. This is the machine mode that
1420 elements of a jump-table should have. */
1421 #define CASE_VECTOR_MODE SImode
1423 /* Define as C expression which evaluates to nonzero if the tablejump
1424 instruction expects the table to contain offsets from the address of the
1426 Do not define this if the table should contain absolute addresses. */
1427 #define CASE_VECTOR_PC_RELATIVE 1
1429 /* Define this if control falls through a `case' insn when the index
1430 value is out of range. This means the specified default-label is
1431 actually ignored by the `case' insn proper. */
1432 /* #define CASE_DROPS_THROUGH */
1434 /* Define this to be the smallest number of different values for which it
1435 is best to use a jump-table instead of a tree of conditional branches.
1436 The default is 4 for machines with a casesi instruction and 5 otherwise.
1437 The best 88110 number is around 7, though the exact number isn't yet
1438 known. A third alternative for the 88110 is to use a binary tree of
1439 bb1 instructions on bits 2/1/0 if the range is dense. This may not
1440 win very much though. */
1441 #define CASE_VALUES_THRESHOLD (TARGET_88100 ? 4 : 7)
1443 /* Define this as 1 if `char' should by default be signed; else as 0. */
1444 #define DEFAULT_SIGNED_CHAR 1
1446 /* The 88open ABI says size_t is unsigned int. */
1447 #define SIZE_TYPE "unsigned int"
1449 /* Handle #pragma pack and sometimes #pragma weak. */
1450 #define HANDLE_SYSV_PRAGMA
1452 /* Tell when to handle #pragma weak. This is only done for V.4. */
1453 #define SUPPORTS_WEAK TARGET_SVR4
1454 #define SUPPORTS_ONE_ONLY TARGET_SVR4
1456 /* Max number of bytes we can move from memory to memory
1457 in one reasonably fast instruction. */
1460 /* Define if normal loads of shorter-than-word items from memory clears
1461 the rest of the bigs in the register. */
1462 #define BYTE_LOADS_ZERO_EXTEND
1464 /* Zero if access to memory by bytes is faster. */
1465 #define SLOW_BYTE_ACCESS 1
1467 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1468 is done just by pretending it is already truncated. */
1469 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1471 /* Define this if addresses of constant functions
1472 shouldn't be put through pseudo regs where they can be cse'd.
1473 Desirable on machines where ordinary constants are expensive
1474 but a CALL with constant address is cheap. */
1475 #define NO_FUNCTION_CSE
1477 /* Define this macro if an argument declared as `char' or
1478 `short' in a prototype should actually be passed as an
1479 `int'. In addition to avoiding errors in certain cases of
1480 mismatch, it also makes for better code on certain machines. */
1481 #define PROMOTE_PROTOTYPES 1
1483 /* We assume that the store-condition-codes instructions store 0 for false
1484 and some other value for true. This is the value stored for true. */
1485 #define STORE_FLAG_VALUE (-1)
1487 /* Specify the machine mode that pointers have.
1488 After generation of rtl, the compiler makes no further distinction
1489 between pointers and any other objects of this machine mode. */
1490 #define Pmode SImode
1492 /* A function address in a call instruction
1493 is a word address (for indexing purposes)
1494 so give the MEM rtx word mode. */
1495 #define FUNCTION_MODE SImode
1497 /* A barrier will be aligned so account for the possible expansion.
1498 A volatile load may be preceded by a serializing instruction.
1499 Account for profiling code output at NOTE_INSN_PROLOGUE_END.
1500 Account for block profiling code at basic block boundaries. */
1501 #define ADJUST_INSN_LENGTH(RTX, LENGTH) \
1502 if (GET_CODE (RTX) == BARRIER \
1503 || (TARGET_SERIALIZE_VOLATILE \
1504 && GET_CODE (RTX) == INSN \
1505 && GET_CODE (PATTERN (RTX)) == SET \
1506 && ((GET_CODE (SET_SRC (PATTERN (RTX))) == MEM \
1507 && MEM_VOLATILE_P (SET_SRC (PATTERN (RTX))))))) \
1509 else if (GET_CODE (RTX) == NOTE \
1510 && NOTE_LINE_NUMBER (RTX) == NOTE_INSN_PROLOGUE_END) \
1512 if (current_function_profile) \
1513 LENGTH += (FUNCTION_PROFILER_LENGTH + REG_PUSH_LENGTH \
1514 + REG_POP_LENGTH); \
1517 /* Track the state of the last volatile memory reference. Clear the
1518 state with CC_STATUS_INIT for now. */
1519 #define CC_STATUS_INIT m88k_volatile_code = '\0'
1521 /* Compute the cost of computing a constant rtl expression RTX
1522 whose rtx-code is CODE. The body of this macro is a portion
1523 of a switch statement. If the code is computed here,
1524 return it with a return statement. Otherwise, break from the switch.
1526 We assume that any 16 bit integer can easily be recreated, so we
1527 indicate 0 cost, in an attempt to get GCC not to optimize things
1528 like comparison against a constant.
1530 The cost of CONST_DOUBLE is zero (if it can be placed in an insn, it
1531 is as good as a register; since it can't be placed in any insn, it
1532 won't do anything in cse, but it will cause expand_binop to pass the
1533 constant to the define_expands). */
1534 #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
1536 if (SMALL_INT (RTX)) \
1538 else if (SMALL_INTVAL (- INTVAL (RTX))) \
1540 else if (classify_integer (SImode, INTVAL (RTX)) != m88k_oru_or) \
1549 return (flag_pic == 2) ? 11 : 8; \
1551 case CONST_DOUBLE: \
1554 /* Provide the costs of an addressing mode that contains ADDR.
1555 If ADDR is not a valid address, its cost is irrelevant.
1556 REG+REG is made slightly more expensive because it might keep
1557 a register live for longer than we might like. */
1558 #define ADDRESS_COST(ADDR) \
1559 (GET_CODE (ADDR) == REG ? 1 : \
1560 GET_CODE (ADDR) == LO_SUM ? 1 : \
1561 GET_CODE (ADDR) == HIGH ? 2 : \
1562 GET_CODE (ADDR) == MULT ? 1 : \
1563 GET_CODE (ADDR) != PLUS ? 4 : \
1564 (REG_P (XEXP (ADDR, 0)) && REG_P (XEXP (ADDR, 1))) ? 2 : 1)
1566 /* Provide the costs of a rtl expression. This is in the body of a
1568 #define RTX_COSTS(X,CODE,OUTER_CODE) \
1570 return COSTS_N_INSNS (2); \
1572 return COSTS_N_INSNS (3); \
1577 return COSTS_N_INSNS (38);
1579 /* A C expressions returning the cost of moving data of MODE from a register
1580 to or from memory. This is more costly than between registers. */
1581 #define MEMORY_MOVE_COST(MODE,CLASS,IN) 4
1583 /* Provide the cost of a branch. Exact meaning under development. */
1584 #define BRANCH_COST (TARGET_88100 ? 1 : 2)
1586 /* Do not break .stabs pseudos into continuations. */
1587 #define DBX_CONTIN_LENGTH 0
1589 /*** Output of Assembler Code ***/
1591 /* Control the assembler format that we output. */
1593 /* A C string constant describing how to begin a comment in the target
1594 assembler language. The compiler assumes that the comment will end at
1595 the end of the line. */
1596 #define ASM_COMMENT_START ";"
1598 /* Allow pseudo-ops to be overridden. Override these in svr[34].h. */
1599 #undef ASCII_DATA_ASM_OP
1600 #undef READONLY_DATA_SECTION_ASM_OP
1601 #undef CTORS_SECTION_ASM_OP
1602 #undef DTORS_SECTION_ASM_OP
1603 #undef TARGET_ASM_NAMED_SECTION
1604 #undef INIT_SECTION_ASM_OP
1605 #undef FINI_SECTION_ASM_OP
1610 #undef COMMON_ASM_OP
1614 /* These are used in varasm.c as well. */
1615 #define TEXT_SECTION_ASM_OP "\ttext"
1616 #define DATA_SECTION_ASM_OP "\tdata"
1618 /* Other sections. */
1619 #define READONLY_DATA_SECTION_ASM_OP (TARGET_SVR4 \
1620 ? "\tsection\t .rodata,\"a\"" \
1621 : "\tsection\t .rodata,\"x\"")
1622 #define TDESC_SECTION_ASM_OP (TARGET_SVR4 \
1623 ? "\tsection\t .tdesc,\"a\"" \
1624 : "\tsection\t .tdesc,\"x\"")
1626 /* These must be constant strings for crtstuff.c. */
1627 #define CTORS_SECTION_ASM_OP "\tsection\t .ctors,\"d\""
1628 #define DTORS_SECTION_ASM_OP "\tsection\t .dtors,\"d\""
1629 #define INIT_SECTION_ASM_OP "\tsection\t .init,\"x\""
1630 #define FINI_SECTION_ASM_OP "\tsection\t .fini,\"x\""
1632 /* These are pretty much common to all assemblers. */
1633 #define IDENT_ASM_OP "\tident\t"
1634 #define FILE_ASM_OP "\tfile\t"
1635 #define SET_ASM_OP "\tdef\t"
1636 #define GLOBAL_ASM_OP "\tglobal\t"
1637 #define ALIGN_ASM_OP "\talign\t"
1638 #define SKIP_ASM_OP "\tzero\t"
1639 #define COMMON_ASM_OP "\tcomm\t"
1640 #define BSS_ASM_OP "\tbss\t"
1641 #define FLOAT_ASM_OP "\tfloat\t"
1642 #define DOUBLE_ASM_OP "\tdouble\t"
1643 #define ASCII_DATA_ASM_OP "\tstring\t"
1645 /* These are particular to the global pool optimization. */
1646 #define SBSS_ASM_OP "\tsbss\t"
1647 #define SCOMM_ASM_OP "\tscomm\t"
1648 #define SDATA_SECTION_ASM_OP "\tsdata"
1650 /* These are specific to PIC. */
1651 #define TYPE_ASM_OP "\ttype\t"
1652 #define SIZE_ASM_OP "\tsize\t"
1653 #ifndef AS_BUG_POUND_TYPE /* Faulty assemblers require @ rather than #. */
1654 #undef TYPE_OPERAND_FMT
1655 #define TYPE_OPERAND_FMT "#%s"
1658 /* This is how we tell the assembler that a symbol is weak. */
1660 #undef ASM_WEAKEN_LABEL
1661 #define ASM_WEAKEN_LABEL(FILE,NAME) \
1662 do { fputs ("\tweak\t", FILE); assemble_name (FILE, NAME); \
1663 fputc ('\n', FILE); } while (0)
1665 /* These are specific to version 03.00 assembler syntax. */
1666 #define INTERNAL_ASM_OP "\tlocal\t"
1667 #define VERSION_ASM_OP "\tversion\t"
1668 #define PUSHSECTION_ASM_OP "\tsection\t"
1669 #define POPSECTION_ASM_OP "\tprevious"
1671 /* These are specific to the version 04.00 assembler syntax. */
1672 #define REQUIRES_88110_ASM_OP "\trequires_88110"
1674 /* Output any initial stuff to the assembly file. Always put out
1675 a file directive, even if not debugging.
1677 Immediately after putting out the file, put out a "sem.<value>"
1678 declaration. This should be harmless on other systems, and
1679 is used in DG/UX by the debuggers to supplement COFF. The
1680 fields in the integer value are as follows:
1684 0-1 0 No information about stack locations
1685 1 Auto/param locations are based on r30
1686 2 Auto/param locations are based on CFA
1688 3-2 0 No information on dimension order
1689 1 Array dims in sym table matches source language
1690 2 Array dims in sym table is in reverse order
1692 5-4 0 No information about the case of global names
1693 1 Global names appear in the symbol table as in the source
1694 2 Global names have been converted to lower case
1695 3 Global names have been converted to upper case. */
1697 #ifdef SDB_DEBUGGING_INFO
1698 #define ASM_COFFSEM(FILE) \
1699 if (write_symbols == SDB_DEBUG) \
1701 fprintf (FILE, "\nsem.%x:\t\t; %s\n", \
1702 (((TARGET_OCS_FRAME_POSITION) ? 2 : 1) << 0) + (1 << 2) + (1 << 4),\
1703 (TARGET_OCS_FRAME_POSITION) \
1704 ? "frame is CFA, normal array dims, case unchanged" \
1705 : "frame is r30, normal array dims, case unchanged"); \
1708 #define ASM_COFFSEM(FILE)
1711 /* Output the first line of the assembly file. Redefined in dgux.h. */
1713 #define ASM_FIRST_LINE(FILE) \
1718 fprintf (FILE, "%s\"%s\"\n", VERSION_ASM_OP, "04.00"); \
1720 fprintf (FILE, "%s\"%s\"\n", VERSION_ASM_OP, "03.00"); \
1724 /* Override svr[34].h. */
1725 #undef ASM_FILE_START
1726 #define ASM_FILE_START(FILE) \
1727 output_file_start (FILE, \
1728 (struct m88k_lang_independent_options *) f_options, \
1729 ARRAY_SIZE (f_options), \
1730 (struct m88k_lang_independent_options *) W_options, \
1731 ARRAY_SIZE (W_options))
1735 #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) \
1737 fprintf (FILE_ASM_OP, FILE); \
1738 output_quoted_string (FILE, NAME); \
1739 putc ('\n', FILE); \
1742 #ifdef SDB_DEBUGGING_INFO
1743 #undef ASM_OUTPUT_SOURCE_LINE
1744 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \
1745 if (m88k_prologue_done) \
1746 fprintf (FILE, "\n\tln\t %d\t\t\t\t; Real source line %d\n",\
1747 LINE - sdb_begin_function_line, LINE)
1750 /* Code to handle #ident directives. Override svr[34].h definition. */
1751 #undef ASM_OUTPUT_IDENT
1752 #ifdef DBX_DEBUGGING_INFO
1753 #define ASM_OUTPUT_IDENT(FILE, NAME)
1755 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1756 output_ascii (FILE, IDENT_ASM_OP, 4000, NAME, strlen (NAME));
1759 /* Output to assembler file text saying following lines
1760 may contain character constants, extra white space, comments, etc. */
1761 #define ASM_APP_ON ""
1763 /* Output to assembler file text saying following lines
1764 no longer contain unusual constructs. */
1765 #define ASM_APP_OFF ""
1767 /* Format the assembly opcode so that the arguments are all aligned.
1768 The maximum instruction size is 8 characters (fxxx.xxx), so a tab and a
1769 space will do to align the output. Abandon the output if a `%' is
1771 #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
1774 const char *orig_ptr; \
1776 for (orig_ptr = (PTR); \
1777 (ch = *(PTR)) && ch != ' ' && ch != '\t' && ch != '\n' && ch != '%'; \
1779 putc (ch, STREAM); \
1781 if (ch == ' ' && orig_ptr != (PTR) && (PTR) - orig_ptr < 8) \
1782 putc ('\t', STREAM); \
1785 /* How to refer to registers in assembler output.
1786 This sequence is indexed by compiler's hard-register-number.
1787 Updated by OVERRIDE_OPTIONS to include the # for version 03.00 syntax. */
1789 #define REGISTER_NAMES \
1790 {"#r0"+1, "#r1"+1, "#r2"+1, "#r3"+1, "#r4"+1, "#r5"+1, "#r6"+1, "#r7"+1, \
1791 "#r8"+1, "#r9"+1, "#r10"+1,"#r11"+1,"#r12"+1,"#r13"+1,"#r14"+1,"#r15"+1,\
1792 "#r16"+1,"#r17"+1,"#r18"+1,"#r19"+1,"#r20"+1,"#r21"+1,"#r22"+1,"#r23"+1,\
1793 "#r24"+1,"#r25"+1,"#r26"+1,"#r27"+1,"#r28"+1,"#r29"+1,"#r30"+1,"#r31"+1,\
1794 "#x0"+1, "#x1"+1, "#x2"+1, "#x3"+1, "#x4"+1, "#x5"+1, "#x6"+1, "#x7"+1, \
1795 "#x8"+1, "#x9"+1, "#x10"+1,"#x11"+1,"#x12"+1,"#x13"+1,"#x14"+1,"#x15"+1,\
1796 "#x16"+1,"#x17"+1,"#x18"+1,"#x19"+1,"#x20"+1,"#x21"+1,"#x22"+1,"#x23"+1,\
1797 "#x24"+1,"#x25"+1,"#x26"+1,"#x27"+1,"#x28"+1,"#x29"+1,"#x30"+1,"#x31"+1}
1799 /* Define additional names for use in asm clobbers and asm declarations.
1801 We define the fake Condition Code register as an alias for reg 0 (which
1802 is our `condition code' register), so that condition codes can easily
1803 be clobbered by an asm. The carry bit in the PSR is now used. */
1805 #define ADDITIONAL_REGISTER_NAMES {{"psr", 0}, {"cc", 0}}
1807 /* Tell when to declare ASM names. Override svr4.h to provide this hook. */
1808 #undef DECLARE_ASM_NAME
1809 #define DECLARE_ASM_NAME TARGET_SVR4
1811 /* Write the extra assembler code needed to declare a function properly. */
1812 #undef ASM_DECLARE_FUNCTION_NAME
1813 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1815 if (DECLARE_ASM_NAME) \
1816 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
1817 ASM_OUTPUT_LABEL(FILE, NAME); \
1820 /* Write the extra assembler code needed to declare an object properly. */
1821 #undef ASM_DECLARE_OBJECT_NAME
1822 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
1824 if (DECLARE_ASM_NAME) \
1826 HOST_WIDE_INT size; \
1828 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
1830 size_directive_output = 0; \
1831 if (!flag_inhibit_size_directive \
1832 && (DECL) && DECL_SIZE (DECL)) \
1834 size_directive_output = 1; \
1835 size = int_size_in_bytes (TREE_TYPE (DECL)); \
1836 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
1839 ASM_OUTPUT_LABEL(FILE, NAME); \
1842 /* Output the size directive for a decl in rest_of_decl_compilation
1843 in the case where we did not do so before the initializer.
1844 Once we find the error_mark_node, we know that the value of
1845 size_directive_output was set
1846 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
1848 #undef ASM_FINISH_DECLARE_OBJECT
1849 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
1851 const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
1852 HOST_WIDE_INT size; \
1853 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
1854 && DECLARE_ASM_NAME \
1855 && ! AT_END && TOP_LEVEL \
1856 && DECL_INITIAL (DECL) == error_mark_node \
1857 && !size_directive_output) \
1859 size_directive_output = 1; \
1860 size = int_size_in_bytes (TREE_TYPE (DECL)); \
1861 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
1865 /* This is how to declare the size of a function. */
1866 #undef ASM_DECLARE_FUNCTION_SIZE
1867 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
1869 if (DECLARE_ASM_NAME) \
1871 if (!flag_inhibit_size_directive) \
1874 static int labelno = 0; \
1876 ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
1877 ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
1878 ASM_OUTPUT_MEASURED_SIZE (FILE, (FNAME), label); \
1883 /* This is how to output the definition of a user-level label named NAME,
1884 such as the label on a static function or variable NAME. */
1885 #define ASM_OUTPUT_LABEL(FILE,NAME) \
1886 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1888 /* This is how to output a command to make the user-level label named NAME
1889 defined for reference from other files. */
1890 #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
1892 fprintf (FILE, "%s", GLOBAL_ASM_OP); \
1893 assemble_name (FILE, NAME); \
1894 putc ('\n', FILE); \
1897 /* The prefix to add to user-visible assembler symbols.
1898 Override svr[34].h. */
1899 #undef USER_LABEL_PREFIX
1900 #define USER_LABEL_PREFIX "_"
1902 /* This is how to output a reference to a user-level label named NAME.
1903 Override svr[34].h. */
1904 #undef ASM_OUTPUT_LABELREF
1905 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
1907 if (!TARGET_NO_UNDERSCORES && !TARGET_SVR4) \
1908 fputc ('_', FILE); \
1909 fputs (NAME, FILE); \
1912 /* This is how to output an internal numbered label where
1913 PREFIX is the class of label and NUM is the number within the class.
1914 For V.4, labels use `.' rather than `@'. */
1916 #undef ASM_OUTPUT_INTERNAL_LABEL
1917 #ifdef AS_BUG_DOT_LABELS /* The assembler requires a declaration of local. */
1918 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1919 fprintf (FILE, TARGET_SVR4 ? ".%s%d:\n%s.%s%d\n" : "@%s%d:\n", \
1920 PREFIX, NUM, INTERNAL_ASM_OP, PREFIX, NUM)
1922 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1923 fprintf (FILE, TARGET_SVR4 ? ".%s%d:\n" : "@%s%d:\n", PREFIX, NUM)
1924 #endif /* AS_BUG_DOT_LABELS */
1926 /* This is how to store into the string LABEL
1927 the symbol_ref name of an internal numbered label where
1928 PREFIX is the class of label and NUM is the number within the class.
1929 This is suitable for output with `assemble_name'. This must agree
1930 with ASM_OUTPUT_INTERNAL_LABEL above, except for being prefixed
1933 #undef ASM_GENERATE_INTERNAL_LABEL
1934 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1935 sprintf (LABEL, TARGET_SVR4 ? "*.%s%ld" : "*@%s%ld", PREFIX, (long)(NUM))
1937 /* The single-byte pseudo-op is the default. Override svr[34].h. */
1938 #undef ASM_OUTPUT_ASCII
1939 #define ASM_OUTPUT_ASCII(FILE, P, SIZE) \
1940 output_ascii (FILE, ASCII_DATA_ASM_OP, 48, P, SIZE)
1942 /* Override svr4.h. Change to the readonly data section for a table of
1943 addresses. final_scan_insn changes back to the text section. */
1944 #undef ASM_OUTPUT_CASE_LABEL
1945 #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
1947 if (! CASE_VECTOR_INSNS) \
1949 readonly_data_section (); \
1950 ASM_OUTPUT_ALIGN (FILE, 2); \
1952 ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
1955 /* Epilogue for case labels. This jump instruction is called by casesi
1956 to transfer to the appropriate branch instruction within the table.
1957 The label `@L<n>e' is coined to mark the end of the table. */
1958 #define ASM_OUTPUT_CASE_END(FILE, NUM, TABLE) \
1960 if (CASE_VECTOR_INSNS) \
1963 ASM_GENERATE_INTERNAL_LABEL (label, "L", NUM); \
1964 fprintf (FILE, "%se:\n", &label[1]); \
1965 if (! flag_delayed_branch) \
1966 fprintf (FILE, "\tlda\t %s,%s[%s]\n", reg_names[1], \
1967 reg_names[1], reg_names[m88k_case_index]); \
1968 fprintf (FILE, "\tjmp\t %s\n", reg_names[1]); \
1972 /* This is how to output an element of a case-vector that is absolute. */
1973 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1976 ASM_GENERATE_INTERNAL_LABEL (buffer, "L", VALUE); \
1977 fprintf (FILE, CASE_VECTOR_INSNS ? "\tbr\t %s\n" : "\tword\t %s\n", \
1981 /* This is how to output an element of a case-vector that is relative. */
1982 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1983 ASM_OUTPUT_ADDR_VEC_ELT (FILE, VALUE)
1985 /* This is how to output an assembler line
1986 that says to advance the location counter
1987 to a multiple of 2**LOG bytes. */
1988 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1990 fprintf (FILE, "%s%d\n", ALIGN_ASM_OP, 1<<(LOG))
1992 /* On the m88100, align the text address to half a cache boundary when it
1993 can only be reached by jumping. Pack code tightly when compiling
1995 #define LABEL_ALIGN_AFTER_BARRIER(LABEL) \
1996 (TARGET_88100 && !flag_inhibit_size_directive ? 3 : 2)
1998 /* Override svr[34].h. */
1999 #undef ASM_OUTPUT_SKIP
2000 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
2001 fprintf (FILE, "%s%u\n", SKIP_ASM_OP, (SIZE))
2003 /* Override svr4.h. */
2004 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
2006 /* This says how to output an assembler line to define a global common
2007 symbol. Size can be zero for the unusual case of a `struct { int : 0; }'.
2008 Override svr[34].h. */
2009 #undef ASM_OUTPUT_COMMON
2010 #undef ASM_OUTPUT_ALIGNED_COMMON
2011 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
2012 ( fprintf ((FILE), "%s", \
2013 ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SCOMM_ASM_OP : COMMON_ASM_OP), \
2014 assemble_name ((FILE), (NAME)), \
2015 fprintf ((FILE), ",%u\n", (SIZE) ? (SIZE) : 1))
2017 /* This says how to output an assembler line to define a local common
2018 symbol. Override svr[34].h. */
2019 #undef ASM_OUTPUT_LOCAL
2020 #undef ASM_OUTPUT_ALIGNED_LOCAL
2021 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
2022 ( fprintf ((FILE), "%s", \
2023 ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SBSS_ASM_OP : BSS_ASM_OP), \
2024 assemble_name ((FILE), (NAME)), \
2025 fprintf ((FILE), ",%u,%d\n", (SIZE) ? (SIZE) : 1, (SIZE) <= 4 ? 4 : 8))
2027 /* Store in OUTPUT a string (made with alloca) containing
2028 an assembler-name for a local static variable named NAME.
2029 LABELNO is an integer which is different for each call. */
2030 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
2031 ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
2032 sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
2034 /* This is how to output an insn to push a register on the stack.
2035 It need not be very fast code. */
2036 #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
2037 fprintf (FILE, "\tsubu\t %s,%s,%d\n\tst\t %s,%s,0\n", \
2038 reg_names[STACK_POINTER_REGNUM], \
2039 reg_names[STACK_POINTER_REGNUM], \
2040 (STACK_BOUNDARY / BITS_PER_UNIT), \
2042 reg_names[STACK_POINTER_REGNUM])
2044 /* Length in instructions of the code output by ASM_OUTPUT_REG_PUSH. */
2045 #define REG_PUSH_LENGTH 2
2047 /* This is how to output an insn to pop a register from the stack. */
2048 #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
2049 fprintf (FILE, "\tld\t %s,%s,0\n\taddu\t %s,%s,%d\n", \
2051 reg_names[STACK_POINTER_REGNUM], \
2052 reg_names[STACK_POINTER_REGNUM], \
2053 reg_names[STACK_POINTER_REGNUM], \
2054 (STACK_BOUNDARY / BITS_PER_UNIT))
2056 /* Length in instructions of the code output by ASM_OUTPUT_REG_POP. */
2057 #define REG_POP_LENGTH 2
2059 /* Macros to deal with OCS debug information */
2061 #define OCS_START_PREFIX "Ltb"
2062 #define OCS_END_PREFIX "Lte"
2064 #define PUT_OCS_FUNCTION_START(FILE) \
2065 { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_START_PREFIX, m88k_function_number); }
2067 #define PUT_OCS_FUNCTION_END(FILE) \
2068 { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_END_PREFIX, m88k_function_number); }
2070 /* Macros for debug information */
2071 #define DEBUGGER_AUTO_OFFSET(X) \
2072 (m88k_debugger_offset (X, 0) \
2073 + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
2075 #define DEBUGGER_ARG_OFFSET(OFFSET, X) \
2076 (m88k_debugger_offset (X, OFFSET) \
2077 + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
2079 /* Macros to deal with SDB debug information */
2080 #ifdef SDB_DEBUGGING_INFO
2082 /* Output structure tag names even when it causes a forward reference. */
2083 #define SDB_ALLOW_FORWARD_REFERENCES
2085 /* Print out extra debug information in the assembler file */
2086 #define PUT_SDB_SCL(a) \
2088 register int s = (a); \
2089 register const char *scl; \
2092 case C_EFCN: scl = "end of function"; break; \
2093 case C_NULL: scl = "NULL storage class"; break; \
2094 case C_AUTO: scl = "automatic"; break; \
2095 case C_EXT: scl = "external"; break; \
2096 case C_STAT: scl = "static"; break; \
2097 case C_REG: scl = "register"; break; \
2098 case C_EXTDEF: scl = "external definition"; break; \
2099 case C_LABEL: scl = "label"; break; \
2100 case C_ULABEL: scl = "undefined label"; break; \
2101 case C_MOS: scl = "structure member"; break; \
2102 case C_ARG: scl = "argument"; break; \
2103 case C_STRTAG: scl = "structure tag"; break; \
2104 case C_MOU: scl = "union member"; break; \
2105 case C_UNTAG: scl = "union tag"; break; \
2106 case C_TPDEF: scl = "typedef"; break; \
2107 case C_USTATIC: scl = "uninitialized static"; break; \
2108 case C_ENTAG: scl = "enumeration tag"; break; \
2109 case C_MOE: scl = "member of enumeration"; break; \
2110 case C_REGPARM: scl = "register parameter"; break; \
2111 case C_FIELD: scl = "bit field"; break; \
2112 case C_BLOCK: scl = "block start/end"; break; \
2113 case C_FCN: scl = "function start/end"; break; \
2114 case C_EOS: scl = "end of structure"; break; \
2115 case C_FILE: scl = "filename"; break; \
2116 case C_LINE: scl = "line"; break; \
2117 case C_ALIAS: scl = "duplicated tag"; break; \
2118 case C_HIDDEN: scl = "hidden"; break; \
2119 default: scl = "unknown"; break; \
2122 fprintf(asm_out_file, "\tscl\t %d\t\t\t\t; %s\n", s, scl); \
2125 #define PUT_SDB_TYPE(a) \
2127 register int t = (a); \
2128 static char buffer[100]; \
2129 register char *p = buffer; \
2130 register const char *q; \
2131 register int typ = t; \
2134 for (i = 0; i <= 5; i++) \
2136 switch ((typ >> ((i*N_TSHIFT) + N_BTSHFT)) & 03) \
2139 strcpy (p, "ptr to "); \
2140 p += sizeof("ptr to"); \
2144 strcpy (p, "array of "); \
2145 p += sizeof("array of"); \
2149 strcpy (p, "func ret "); \
2150 p += sizeof("func ret"); \
2155 switch (typ & N_BTMASK) \
2157 case T_NULL: q = "<no type>"; break; \
2158 case T_CHAR: q = "char"; break; \
2159 case T_SHORT: q = "short"; break; \
2160 case T_INT: q = "int"; break; \
2161 case T_LONG: q = "long"; break; \
2162 case T_FLOAT: q = "float"; break; \
2163 case T_DOUBLE: q = "double"; break; \
2164 case T_STRUCT: q = "struct"; break; \
2165 case T_UNION: q = "union"; break; \
2166 case T_ENUM: q = "enum"; break; \
2167 case T_MOE: q = "enum member"; break; \
2168 case T_UCHAR: q = "unsigned char"; break; \
2169 case T_USHORT: q = "unsigned short"; break; \
2170 case T_UINT: q = "unsigned int"; break; \
2171 case T_ULONG: q = "unsigned long"; break; \
2172 default: q = "void"; break; \
2176 fprintf(asm_out_file, "\ttype\t %d\t\t\t\t; %s\n", \
2180 #define PUT_SDB_INT_VAL(a) \
2181 fprintf (asm_out_file, "\tval\t %d\n", (a))
2183 #define PUT_SDB_VAL(a) \
2184 ( fprintf (asm_out_file, "\tval\t "), \
2185 output_addr_const (asm_out_file, (a)), \
2186 fputc ('\n', asm_out_file))
2188 #define PUT_SDB_DEF(a) \
2189 do { fprintf (asm_out_file, "\tsdef\t "); \
2190 ASM_OUTPUT_LABELREF (asm_out_file, a); \
2191 fputc ('\n', asm_out_file); \
2194 #define PUT_SDB_PLAIN_DEF(a) \
2195 fprintf(asm_out_file,"\tsdef\t .%s\n", a)
2197 /* Simply and endef now. */
2198 #define PUT_SDB_ENDEF \
2199 fputs("\tendef\n\n", asm_out_file)
2201 #define PUT_SDB_SIZE(a) \
2202 fprintf (asm_out_file, "\tsize\t %d\n", (a))
2204 /* Max dimensions to store for debug information (limited by COFF). */
2205 #define SDB_MAX_DIM 6
2207 /* New method for dim operations. */
2208 #define PUT_SDB_START_DIM \
2209 fputs("\tdim\t ", asm_out_file)
2211 /* How to end the DIM sequence. */
2212 #define PUT_SDB_LAST_DIM(a) \
2213 fprintf(asm_out_file, "%d\n", a)
2215 #define PUT_SDB_TAG(a) \
2217 fprintf (asm_out_file, "\ttag\t "); \
2218 ASM_OUTPUT_LABELREF (asm_out_file, a); \
2219 fputc ('\n', asm_out_file); \
2222 #define PUT_SDB_BLOCK_OR_FUNCTION(NAME, SCL, LINE) \
2224 fprintf (asm_out_file, "\n\tsdef\t %s\n\tval\t .\n", \
2226 PUT_SDB_SCL( SCL ); \
2227 fprintf (asm_out_file, "\tline\t %d\n\tendef\n\n", \
2231 #define PUT_SDB_BLOCK_START(LINE) \
2232 PUT_SDB_BLOCK_OR_FUNCTION (".bb", C_BLOCK, (LINE))
2234 #define PUT_SDB_BLOCK_END(LINE) \
2235 PUT_SDB_BLOCK_OR_FUNCTION (".eb", C_BLOCK, (LINE))
2237 #define PUT_SDB_FUNCTION_START(LINE) \
2239 fprintf (asm_out_file, "\tln\t 1\n"); \
2240 PUT_SDB_BLOCK_OR_FUNCTION (".bf", C_FCN, (LINE)); \
2243 #define PUT_SDB_FUNCTION_END(LINE) \
2245 PUT_SDB_BLOCK_OR_FUNCTION (".ef", C_FCN, (LINE)); \
2248 #define PUT_SDB_EPILOGUE_END(NAME) \
2251 fprintf (asm_out_file, "\n\tsdef\t "); \
2252 ASM_OUTPUT_LABELREF(asm_out_file, (NAME)); \
2253 fputc('\n', asm_out_file); \
2254 PUT_SDB_SCL( C_EFCN ); \
2255 fprintf (asm_out_file, "\tendef\n\n"); \
2258 #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
2259 sprintf ((BUFFER), ".%dfake", (NUMBER));
2261 #endif /* SDB_DEBUGGING_INFO */
2263 /* Support const and tdesc sections. Generally, a const section will
2264 be distinct from the text section whenever we do V.4-like things
2265 and so follows DECLARE_ASM_NAME. Note that strings go in text
2266 rather than const. Override svr[34].h. */
2268 #undef EXTRA_SECTIONS
2270 #if defined(USING_SVR4_H)
2272 #define EXTRA_SECTIONS in_tdesc, in_sdata
2273 #define INIT_SECTION_FUNCTION
2274 #define FINI_SECTION_FUNCTION
2277 #if defined(USING_SVR3_H)
2279 #define EXTRA_SECTIONS in_tdesc, in_sdata, in_init, in_fini
2281 #else /* luna or other not based on svr[34].h. */
2283 #undef READONLY_DATA_SECTION_ASM_OP
2284 #undef INIT_SECTION_ASM_OP
2285 #define EXTRA_SECTIONS in_tdesc, in_sdata
2286 #define INIT_SECTION_FUNCTION
2287 #define FINI_SECTION_FUNCTION
2289 #endif /* USING_SVR3_H */
2290 #endif /* USING_SVR4_H */
2292 #undef EXTRA_SECTION_FUNCTIONS
2293 #define EXTRA_SECTION_FUNCTIONS \
2297 if (in_section != in_tdesc) \
2299 fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \
2300 in_section = in_tdesc; \
2307 if (in_section != in_sdata) \
2309 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
2310 in_section = in_sdata; \
2314 INIT_SECTION_FUNCTION \
2315 FINI_SECTION_FUNCTION
2317 #define TARGET_ASM_SELECT_SECTION m88k_select_section
2319 /* Jump tables consist of branch instructions and should be output in
2320 the text section. When we use a table of addresses, we explicitly
2321 change to the readonly data section. */
2322 #define JUMP_TABLES_IN_TEXT_SECTION 1
2324 /* Print operand X (an rtx) in assembler syntax to file FILE.
2325 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
2326 For `%' followed by punctuation, CODE is the punctuation and X is null. */
2327 #define PRINT_OPERAND_PUNCT_VALID_P(c) \
2328 ((c) == '#' || (c) == '.' || (c) == '!' || (c) == '*' || (c) == ';')
2330 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
2332 /* Print a memory address as an operand to reference that memory location. */
2333 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
2335 /* This says not to strength reduce the addr calculations within loops
2336 (otherwise it does not take advantage of m88k scaled loads and stores */
2338 #define DONT_REDUCE_ADDR
OSDN Git Service
