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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: Motorola m88100 in an 88open OCS/BCS environment.
3: Copyright (C) 1988, 1989, 1990, 1991, 1993 Free Software Foundation, Inc.
4: Contributed by Michael Tiemann ([email protected])
5: Enhanced by Michael Meissner ([email protected])
6: Version 2 port by Tom Wood ([email protected])
7:
8: This file is part of GNU CC.
9:
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)
13: any later version.
14:
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.
19:
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. */
23:
24: /* The m88100 port of GNU CC adheres to the various standards from 88open.
25: These documents are available by writing:
26:
27: 88open Consortium Ltd.
28: 100 Homeland Court, Suite 800
29: San Jose, CA 95112
30: (408) 436-6600
31:
32: In brief, the current standards are:
33:
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.
37:
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,
41: largely for SVR3.
42:
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:
45:
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.
49:
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.
53:
54: System V ABI Implementation Guide for the M88000 Processor,
55: Release 1.0, January 1991
56: A companion ABI document from 88open. */
57:
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. */
62:
63: /* Choose SVR3 as the default. */
64: #if !defined(DBX_DEBUGGING_INFO) && !defined(DWARF_DEBUGGING_INFO)
65: #include "svr3.h"
66: #endif
67:
68: /* External types used. */
69:
70: /* What instructions are needed to manufacture an integer constant. */
71: enum m88k_instruction {
72: m88k_zero,
73: m88k_or,
74: m88k_subu,
75: m88k_or_lo16,
76: m88k_or_lo8,
77: m88k_set,
78: m88k_oru_hi16,
79: m88k_oru_or
80: };
81:
82: /* External variables/functions defined in m88k.c. */
83:
84: extern char *m88k_pound_sign;
85: extern char *m88k_short_data;
86: extern char *m88k_version;
87: extern char m88k_volatile_code;
88:
89: extern int m88k_gp_threshold;
90: extern int m88k_prologue_done;
91: extern int m88k_function_number;
92: extern int m88k_fp_offset;
93: extern int m88k_stack_size;
94: extern int m88k_case_index;
95: extern int m88k_version_0300;
96:
97: extern struct rtx_def *m88k_compare_reg;
98: extern struct rtx_def *m88k_compare_op0;
99: extern struct rtx_def *m88k_compare_op1;
100:
101: extern enum attr_cpu m88k_cpu;
102:
103: extern int null_prologue ();
104: extern int integer_ok_for_set ();
105: extern int m88k_debugger_offset ();
106:
107: extern void emit_bcnd ();
108: extern void expand_block_move ();
109: extern void m88k_layout_frame ();
110: extern void m88k_expand_prologue ();
111: extern void m88k_begin_prologue ();
112: extern void m88k_end_prologue ();
113: extern void m88k_expand_epilogue ();
114: extern void m88k_begin_epilogue ();
115: extern void m88k_end_epilogue ();
116: extern void output_function_profiler ();
117: extern void output_function_block_profiler ();
118: extern void output_block_profiler ();
119: extern void output_file_start ();
120: extern void output_ascii ();
121: extern void output_label ();
122: extern void print_operand ();
123: extern void print_operand_address ();
124:
125: extern char *output_load_const_int ();
126: extern char *output_load_const_float ();
127: extern char *output_load_const_double ();
128: extern char *output_load_const_dimode ();
129: extern char *output_and ();
130: extern char *output_ior ();
131: extern char *output_xor ();
132: extern char *output_call ();
133:
134: extern struct rtx_def *emit_test ();
135: extern struct rtx_def *legitimize_address ();
136: extern struct rtx_def *legitimize_operand ();
137: extern struct rtx_def *m88k_function_arg ();
138: extern struct rtx_def *m88k_builtin_saveregs ();
139:
140: extern enum m88k_instruction classify_integer ();
141:
142: /* external variables defined elsewhere in the compiler */
143:
144: extern int target_flags; /* -m compiler switches */
145: extern int frame_pointer_needed; /* current function has a FP */
146: extern int current_function_pretend_args_size; /* args size without ... */
147: extern int flag_delayed_branch; /* -fdelayed-branch */
148: extern int flag_pic; /* -fpic */
149: extern char * reg_names[];
150:
151: /* Specify the default monitors. The meaning of these values can
152: be obtained by doing "grep MONITOR_GCC *m88k*". Generally, the
153: values downward from 0x8000 are tests that will soon go away.
154: values upward from 0x1 are generally useful tests that will remain. */
155:
156: #ifndef MONITOR_GCC
157: #define MONITOR_GCC 0
158: #endif
159:
160: /*** Controlling the Compilation Driver, `gcc' ***/
161:
162: /* Some machines may desire to change what optimizations are performed for
163: various optimization levels. This macro, if defined, is executed once
164: just after the optimization level is determined and before the remainder
165: of the command options have been parsed. Values set in this macro are
166: used as the default values for the other command line options.
167:
168: LEVEL is the optimization level specified; 2 if -O2 is specified,
169: 1 if -O is specified, and 0 if neither is specified. */
170:
171: /* This macro used to store 0 in flag_signed_bitfields.
172: Not only is that misuse of this macro; the whole idea is wrong.
173:
174: The GNU C dialect makes bitfields signed by default,
175: regardless of machine type. Making any machine inconsistent in this
176: regard is bad for portability.
177:
178: I chose to make bitfields signed by default because this is consistent
179: with the way ordinary variables are handled: `int' equals `signed int'.
180: If there is a good reason to prefer making bitfields unsigned by default,
181: it cannot have anything to do with the choice of machine.
182: If the reason is good enough, we should change the convention for all machines.
183:
184: -- rms, 20 July 1991. */
185:
186: #define OPTIMIZATION_OPTIONS(LEVEL) \
187: do { \
188: if (LEVEL) \
189: { \
190: flag_omit_frame_pointer = 1; \
191: } \
192: } while (0)
193:
194: /* If -m88100 is in effect, add -D__m88100__; similarly for -m88110.
195: Here, the CPU_DEFAULT is assumed to be -m88100. */
196: #undef CPP_SPEC
197: #define CPP_SPEC "%{!m88000:%{!m88100:%{m88110:-D__m88110__}}} \
198: %{!m88000:%{!m88110:-D__m88100__}}"
199:
200: /* LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC defined in svr3.h.
201: ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC redefined
202: in svr4.h.
203: CPP_SPEC, ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and
204: STARTFILE_SPEC redefined in m88kdgux.h. */
205:
206: /*** Run-time Target Specification ***/
207:
208: /* Names to predefine in the preprocessor for this target machine.
209: Redefined in m88kv3.h, m88kv4.h, m88kdgux.h, and m88kluna.h. */
210: #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -D__CLASSIFY_TYPE__=2 -Asystem(unix) -Acpu(m88k) -Amachine(m88k)"
211:
212: #define TARGET_VERSION fprintf (stderr, " (%s%s)", \
213: VERSION_INFO1, VERSION_INFO2)
214:
215: /* Print subsidiary information on the compiler version in use.
216: Redefined in m88kv4.h, and m88kluna.h. */
217: #define VERSION_INFO1 "88open OCS/BCS, "
218: #define VERSION_INFO2 "12/16/92"
219: #define VERSION_STRING version_string
220: #define TM_SCCS_ID "@(#)m88k.h 2.3.3.2 12/16/92 08:26:09"
221:
222: /* Run-time compilation parameters selecting different hardware subsets. */
223:
224: /* Macro to define tables used to set the flags.
225: This is a list in braces of pairs in braces,
226: each pair being { "NAME", VALUE }
227: where VALUE is the bits to set or minus the bits to clear.
228: An empty string NAME is used to identify the default VALUE. */
229:
230: #define MASK_88100 0x00000001 /* Target m88100 */
231: #define MASK_88110 0x00000002 /* Target m88110 */
232: #define MASK_OCS_DEBUG_INFO 0x00000004 /* Emit .tdesc info */
233: #define MASK_OCS_FRAME_POSITION 0x00000008 /* Debug frame = CFA, not r30 */
234: #define MASK_SVR4 0x00000010 /* Target is AT&T System V.4 */
235: #define MASK_NO_UNDERSCORES 0x00000040 /* Don't emit a leading `_' */
236: #define MASK_BIG_PIC 0x00000080 /* PIC with large got-rel's -fPIC */
237: #define MASK_TRAP_LARGE_SHIFT 0x00000100 /* Trap if shift not <= 31 */
238: #define MASK_HANDLE_LARGE_SHIFT 0x00000200 /* Handle shift count >= 32 */
239: #define MASK_CHECK_ZERO_DIV 0x00000400 /* Check for int div. by 0 */
240: #define MASK_USE_DIV 0x00000800 /* No signed div. checks */
241: #define MASK_IDENTIFY_REVISION 0x00001000 /* Emit ident, with GCC rev */
242: #define MASK_WARN_PASS_STRUCT 0x00002000 /* Warn about passed structs */
243: #define MASK_OPTIMIZE_ARG_AREA 0x00004000 /* Save stack space */
244: #define MASK_NO_SERIALIZE_VOLATILE 0x00008000 /* Serialize volatile refs */
245:
246: #define MASK_88000 (MASK_88100 | MASK_88110)
247: #define MASK_EITHER_LARGE_SHIFT (MASK_TRAP_LARGE_SHIFT | \
248: MASK_HANDLE_LARGE_SHIFT)
249:
250: #define TARGET_88100 ((target_flags & MASK_88000) == MASK_88100)
251: #define TARGET_88110 ((target_flags & MASK_88000) == MASK_88110)
252: #define TARGET_88000 ((target_flags & MASK_88000) == MASK_88000)
253:
254: #define TARGET_OCS_DEBUG_INFO (target_flags & MASK_OCS_DEBUG_INFO)
255: #define TARGET_OCS_FRAME_POSITION (target_flags & MASK_OCS_FRAME_POSITION)
256: #define TARGET_SVR4 (target_flags & MASK_SVR4)
257: #define TARGET_NO_UNDERSCORES (target_flags & MASK_NO_UNDERSCORES)
258: #define TARGET_BIG_PIC (target_flags & MASK_BIG_PIC)
259: #define TARGET_TRAP_LARGE_SHIFT (target_flags & MASK_TRAP_LARGE_SHIFT)
260: #define TARGET_HANDLE_LARGE_SHIFT (target_flags & MASK_HANDLE_LARGE_SHIFT)
261: #define TARGET_CHECK_ZERO_DIV (target_flags & MASK_CHECK_ZERO_DIV)
262: #define TARGET_USE_DIV (target_flags & MASK_USE_DIV)
263: #define TARGET_IDENTIFY_REVISION (target_flags & MASK_IDENTIFY_REVISION)
264: #define TARGET_WARN_PASS_STRUCT (target_flags & MASK_WARN_PASS_STRUCT)
265: #define TARGET_OPTIMIZE_ARG_AREA (target_flags & MASK_OPTIMIZE_ARG_AREA)
266: #define TARGET_SERIALIZE_VOLATILE (!(target_flags & MASK_NO_SERIALIZE_VOLATILE))
267:
268: #define TARGET_EITHER_LARGE_SHIFT (target_flags & MASK_EITHER_LARGE_SHIFT)
269:
270: /* Redefined in m88kv3.h,m88kv4.h, and m88kdgux.h. */
271: #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV)
272: #define CPU_DEFAULT MASK_88100
273:
274: #define TARGET_SWITCHES \
275: { \
276: { "88110", MASK_88110 }, \
277: { "88100", MASK_88100 }, \
278: { "88000", MASK_88000 }, \
279: { "ocs-debug-info", MASK_OCS_DEBUG_INFO }, \
280: { "no-ocs-debug-info", -MASK_OCS_DEBUG_INFO }, \
281: { "ocs-frame-position", MASK_OCS_FRAME_POSITION }, \
282: { "no-ocs-frame-position", -MASK_OCS_FRAME_POSITION }, \
283: { "svr4", MASK_SVR4 }, \
284: { "svr3", -MASK_SVR4 }, \
285: { "no-underscores", MASK_NO_UNDERSCORES }, \
286: { "big-pic", MASK_BIG_PIC }, \
287: { "trap-large-shift", MASK_TRAP_LARGE_SHIFT }, \
288: { "handle-large-shift", MASK_HANDLE_LARGE_SHIFT }, \
289: { "check-zero-division", MASK_CHECK_ZERO_DIV }, \
290: { "no-check-zero-division", -MASK_CHECK_ZERO_DIV }, \
291: { "use-div-instruction", MASK_USE_DIV }, \
292: { "identify-revision", MASK_IDENTIFY_REVISION }, \
293: { "warn-passed-structs", MASK_WARN_PASS_STRUCT }, \
294: { "optimize-arg-area", MASK_OPTIMIZE_ARG_AREA }, \
295: { "no-optimize-arg-area", -MASK_OPTIMIZE_ARG_AREA }, \
296: { "no-serialize-volatile", MASK_NO_SERIALIZE_VOLATILE }, \
297: { "serialize-volatile", -MASK_NO_SERIALIZE_VOLATILE }, \
298: SUBTARGET_SWITCHES \
299: /* Default switches */ \
300: { "", TARGET_DEFAULT }, \
301: }
302:
303: /* Redefined in m88kdgux.h. */
304: #define SUBTARGET_SWITCHES
305:
306: /* Macro to define table for command options with values. */
307:
308: #define TARGET_OPTIONS { { "short-data-", &m88k_short_data }, \
309: { "version-", &m88k_version } }
310:
311: /* Do any checking or such that is needed after processing the -m switches. */
312:
313: #define OVERRIDE_OPTIONS \
314: do { \
315: register int i; \
316: \
317: if ((target_flags & MASK_88000) == 0) \
318: target_flags |= CPU_DEFAULT; \
319: \
320: m88k_cpu = (TARGET_88000 ? CPU_M88000 \
321: : (TARGET_88100 ? CPU_M88100 : CPU_M88110)); \
322: \
323: if (TARGET_BIG_PIC) \
324: flag_pic = 2; \
325: \
326: if ((target_flags & MASK_EITHER_LARGE_SHIFT) == MASK_EITHER_LARGE_SHIFT) \
327: error ("-mtrap-large-shift and -mhandle-large-shift are incompatible");\
328: \
329: m88k_version_0300 = (m88k_version != 0 \
330: && strcmp (m88k_version, "03.00") >= 0); \
331: \
332: if (VERSION_0300_SYNTAX) \
333: { \
334: for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) \
335: reg_names[i]--; \
336: m88k_pound_sign = "#"; \
337: if (m88k_version == 0) \
338: m88k_version = VERSION_0400_SYNTAX ? "04.00" : "03.00"; \
339: else if (strcmp (m88k_version, "03.00") < 0) \
340: error ("Specified assembler version (%s) is less that 03.00", \
341: m88k_version); \
342: } \
343: \
344: m88k_version_0300 = (m88k_version != 0 \
345: && strcmp (m88k_version, "03.00") >= 0); \
346: \
347: if (m88k_short_data) \
348: { \
349: char *p = m88k_short_data; \
350: while (*p) \
351: if (*p >= '0' && *p <= '9') \
352: p++; \
353: else \
354: { \
355: error ("Invalid option `-mshort-data-%s'", m88k_short_data); \
356: break; \
357: } \
358: m88k_gp_threshold = atoi (m88k_short_data); \
359: if (flag_pic) \
360: error ("-mshort-data-%s and PIC are incompatible", m88k_short_data); \
361: } \
362: } while (0)
363:
364: /*** Storage Layout ***/
365:
366: /* Sizes in bits of the various types. */
367: #define CHAR_TYPE_SIZE 8
368: #define SHORT_TYPE_SIZE 16
369: #define INT_TYPE_SIZE 32
370: #define LONG_TYPE_SIZE 32
371: #define LONG_LONG_TYPE_SIZE 64
372: #define FLOAT_TYPE_SIZE 32
373: #define DOUBLE_TYPE_SIZE 64
374: #define LONG_DOUBLE_TYPE_SIZE 64
375:
376: /* Define this if most significant bit is lowest numbered
377: in instructions that operate on numbered bit-fields.
378: Somewhat arbitrary. It matches the bit field patterns. */
379: #define BITS_BIG_ENDIAN 1
380:
381: /* Define this if most significant byte of a word is the lowest numbered.
382: That is true on the m88000. */
383: #define BYTES_BIG_ENDIAN 1
384:
385: /* Define this if most significant word of a multiword number is the lowest
386: numbered.
387: For the m88000 we can decide arbitrarily since there are no machine
388: instructions for them. */
389: #define WORDS_BIG_ENDIAN 1
390:
391: /* Number of bits in an addressable storage unit */
392: #define BITS_PER_UNIT 8
393:
394: /* Width in bits of a "word", which is the contents of a machine register.
395: Note that this is not necessarily the width of data type `int';
396: if using 16-bit ints on a 68000, this would still be 32.
397: But on a machine with 16-bit registers, this would be 16. */
398: #define BITS_PER_WORD 32
399:
400: /* Width of a word, in units (bytes). */
401: #define UNITS_PER_WORD 4
402:
403: /* Width in bits of a pointer.
404: See also the macro `Pmode' defined below. */
405: #define POINTER_SIZE 32
406:
407: /* Allocation boundary (in *bits*) for storing arguments in argument list. */
408: #define PARM_BOUNDARY 32
409:
410: /* Largest alignment for stack parameters (if greater than PARM_BOUNDARY). */
411: #define MAX_PARM_BOUNDARY 64
412:
413: /* Boundary (in *bits*) on which stack pointer should be aligned. */
414: #define STACK_BOUNDARY 128
415:
416: /* Allocation boundary (in *bits*) for the code of a function. On the
417: m88100, it is desirable to align to a cache line. However, SVR3 targets
418: only provided 8 byte alignment. The m88110 cache is small, so align
419: to an 8 byte boundary. Pack code tightly when compiling crtstuff.c. */
420: #define FUNCTION_BOUNDARY (flag_inhibit_size_directive ? 32 : \
421: (TARGET_88100 && TARGET_SVR4 ? 128 : 64))
422:
423: /* No data type wants to be aligned rounder than this. */
424: #define BIGGEST_ALIGNMENT 64
425:
426: /* The best alignment to use in cases where we have a choice. */
427: #define FASTEST_ALIGNMENT (TARGET_88100 ? 32 : 64)
428:
429: /* Make strings 4/8 byte aligned so strcpy from constants will be faster. */
430: #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
431: ((TREE_CODE (EXP) == STRING_CST \
432: && (ALIGN) < FASTEST_ALIGNMENT) \
433: ? FASTEST_ALIGNMENT : (ALIGN))
434:
435: /* Make arrays of chars 4/8 byte aligned for the same reasons. */
436: #define DATA_ALIGNMENT(TYPE, ALIGN) \
437: (TREE_CODE (TYPE) == ARRAY_TYPE \
438: && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
439: && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
440:
441: /* Alignment of field after `int : 0' in a structure.
442: Ignored with PCC_BITFIELD_TYPE_MATTERS. */
443: /* #define EMPTY_FIELD_BOUNDARY 8 */
444:
445: /* Every structure's size must be a multiple of this. */
446: #define STRUCTURE_SIZE_BOUNDARY 8
447:
448: /* Set this nonzero if move instructions will actually fail to work
449: when given unaligned data. */
450: #define STRICT_ALIGNMENT 1
451:
452: /* A bitfield declared as `int' forces `int' alignment for the struct. */
453: #define PCC_BITFIELD_TYPE_MATTERS 1
454:
455: /* Maximum size (in bits) to use for the largest integral type that
456: replaces a BLKmode type. */
457: /* #define MAX_FIXED_MODE_SIZE 0 */
458:
459: /* Check a `double' value for validity for a particular machine mode.
460: This is defined to avoid crashes outputting certain constants.
461: Since we output the number in hex, the assembler won't choke on it. */
462: /* #define CHECK_FLOAT_VALUE(MODE,VALUE) */
463:
464: /* A code distinguishing the floating point format of the target machine. */
465: /* #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT */
466:
467: /*** Register Usage ***/
468:
469: /* Number of actual hardware registers.
470: The hardware registers are assigned numbers for the compiler
471: from 0 to just below FIRST_PSEUDO_REGISTER.
472: All registers that the compiler knows about must be given numbers,
473: even those that are not normally considered general registers.
474:
475: The m88100 has a General Register File (GRF) of 32 32-bit registers.
476: The m88110 adds an Extended Register File (XRF) of 32 80-bit registers. */
477: #define FIRST_PSEUDO_REGISTER 64
478: #define FIRST_EXTENDED_REGISTER 32
479:
480: /* General notes on extended registers, their use and misuse.
481:
482: Possible good uses:
483:
484: spill area instead of memory.
485: -waste if only used once
486:
487: floating point calculations
488: -probably a waste unless we have run out of general purpose registers
489:
490: freeing up general purpose registers
491: -e.g. may be able to have more loop invariants if floating
492: point is moved into extended registers.
493:
494:
495: I've noticed wasteful moves into and out of extended registers; e.g. a load
496: into x21, then inside a loop a move into r24, then r24 used as input to
497: an fadd. Why not just load into r24 to begin with? Maybe the new cse.c
498: will address this. This wastes a move, but the load,store and move could
499: have been saved had extended registers been used throughout.
500: E.g. in the code following code, if z and xz are placed in extended
501: registers, there is no need to save preserve registers.
502:
503: long c=1,d=1,e=1,f=1,g=1,h=1,i=1,j=1,k;
504:
505: double z=0,xz=4.5;
506:
507: foo(a,b)
508: long a,b;
509: {
510: while (a < b)
511: {
512: k = b + c + d + e + f + g + h + a + i + j++;
513: z += xz;
514: a++;
515: }
516: printf("k= %d; z=%f;\n", k, z);
517: }
518:
519: I've found that it is possible to change the constraints (putting * before
520: the 'r' constraints int the fadd.ddd instruction) and get the entire
521: addition and store to go into extended registers. However, this also
522: forces simple addition and return of floating point arguments to a
523: function into extended registers. Not the correct solution.
524:
525: Found the following note in local-alloc.c which may explain why I can't
526: get both registers to be in extended registers since two are allocated in
527: local-alloc and one in global-alloc. Doesn't explain (I don't believe)
528: why an extended register is used instead of just using the preserve
529: register.
530:
531: from local-alloc.c:
532: We have provision to exempt registers, even when they are contained
533: within the block, that can be tied to others that are not contained in it.
534: This is so that global_alloc could process them both and tie them then.
535: But this is currently disabled since tying in global_alloc is not
536: yet implemented.
537:
538: The explanation of why the preserved register is not used is as follows,
539: I believe. The registers are being allocated in order. Tying is not
540: done so efficiently, so when it comes time to do the first allocation,
541: there are no registers left to use without spilling except extended
542: registers. Then when the next pseudo register needs a hard reg, there
543: are still no registers to be had for free, but this one must be a GRF
544: reg instead of an extended reg, so a preserve register is spilled. Thus
545: the move from extended to GRF is necessitated. I do not believe this can
546: be 'fixed' through the config/*m88k* files.
547:
548: gcc seems to sometimes make worse use of register allocation -- not counting
549: moves -- whenever extended registers are present. For example in the
550: whetstone, the simple for loop (slightly modified)
551: for(i = 1; i <= n1; i++)
552: {
553: x1 = (x1 + x2 + x3 - x4) * t;
554: x2 = (x1 + x2 - x3 + x4) * t;
555: x3 = (x1 - x2 + x3 + x4) * t;
556: x4 = (x1 + x2 + x3 + x4) * t;
557: }
558: in general loads the high bits of the addresses of x2-x4 and i into registers
559: outside the loop. Whenever extended registers are used, it loads all of
560: these inside the loop. My conjecture is that since the 88110 has so many
561: registers, and gcc makes no distinction at this point -- just that they are
562: not fixed, that in loop.c it believes it can expect a number of registers
563: to be available. Then it allocates 'too many' in local-alloc which causes
564: problems later. 'Too many' are allocated because a large portion of the
565: registers are extended registers and cannot be used for certain purposes
566: ( e.g. hold the address of a variable). When this loop is compiled on its
567: own, the problem does not occur. I don't know the solution yet, though it
568: is probably in the base sources. Possibly a different way to calculate
569: "threshold". */
570:
571: /* 1 for registers that have pervasive standard uses and are not available
572: for the register allocator. Registers r14-r25 and x22-x29 are expected
573: to be preserved across function calls.
574:
575: On the 88000, the standard uses of the General Register File (GRF) are:
576: Reg 0 = Pseudo argument pointer (hardware fixed to 0).
577: Reg 1 = Subroutine return pointer (hardware).
578: Reg 2-9 = Parameter registers (OCS).
579: Reg 10 = OCS reserved temporary.
580: Reg 11 = Static link if needed [OCS reserved temporary].
581: Reg 12 = Address of structure return (OCS).
582: Reg 13 = OCS reserved temporary.
583: Reg 14-25 = Preserved register set.
584: Reg 26-29 = Reserved by OCS and ABI.
585: Reg 30 = Frame pointer (Common use).
586: Reg 31 = Stack pointer.
587:
588: The following follows the current 88open UCS specification for the
589: Extended Register File (XRF):
590: Reg 32 = x0 Always equal to zero
591: Reg 33-53 = x1-x21 Temporary registers (Caller Save)
592: Reg 54-61 = x22-x29 Preserver registers (Callee Save)
593: Reg 62-63 = x30-x31 Reserved for future ABI use.
594:
595: Note: The current 88110 extended register mapping is subject to change.
596: The bias towards caller-save registers is based on the
597: presumption that memory traffic can potentially be reduced by
598: allowing the "caller" to save only that part of the register
599: which is actually being used. (i.e. don't do a st.x if a st.d
600: is sufficient). Also, in scientific code (a.k.a. Fortran), the
601: large number of variables defined in common blocks may require
602: that almost all registers be saved across calls anyway. */
603:
604: #define FIXED_REGISTERS \
605: {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
606: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
607: 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
608: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1}
609:
610: /* 1 for registers not available across function calls.
611: These must include the FIXED_REGISTERS and also any
612: registers that can be used without being saved.
613: The latter must include the registers where values are returned
614: and the register where structure-value addresses are passed.
615: Aside from that, you can include as many other registers as you like. */
616:
617: #define CALL_USED_REGISTERS \
618: {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, \
619: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
620: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
621: 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1}
622:
623: /* Macro to conditionally modify fixed_regs/call_used_regs. */
624: #define CONDITIONAL_REGISTER_USAGE \
625: { \
626: if (! TARGET_88110) \
627: { \
628: register int i; \
629: for (i = FIRST_EXTENDED_REGISTER; i < FIRST_PSEUDO_REGISTER; i++) \
630: { \
631: fixed_regs[i] = 1; \
632: call_used_regs[i] = 1; \
633: } \
634: } \
635: if (flag_pic) \
636: { \
637: /* Current hack to deal with -fpic -O2 problems. */ \
638: fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
639: call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
640: global_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
641: } \
642: }
643:
644: /* These interfaces that don't apply to the m88000. */
645: /* OVERLAPPING_REGNO_P(REGNO) 0 */
646: /* INSN_CLOBBERS_REGNO_P(INSN, REGNO) 0 */
647: /* PRESERVE_DEATH_INFO_REGNO_P(REGNO) 0 */
648:
649: /* True if register is an extended register. */
650: #define XRF_REGNO_P(N) ((N) < FIRST_PSEUDO_REGISTER && (N) >= FIRST_EXTENDED_REGISTER)
651:
652: /* Return number of consecutive hard regs needed starting at reg REGNO
653: to hold something of mode MODE.
654: This is ordinarily the length in words of a value of mode MODE
655: but can be less for certain modes in special long registers.
656:
657: On the m88000, GRF registers hold 32-bits and XRF registers hold 80-bits.
658: An XRF register can hold any mode, but two GRF registers are required
659: for larger modes. */
660: #define HARD_REGNO_NREGS(REGNO, MODE) \
661: (XRF_REGNO_P (REGNO) \
662: ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
663:
664: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
665:
666: For double integers, we never put the value into an odd register so that
667: the operators don't run into the situation where the high part of one of
668: the inputs is the low part of the result register. (It's ok if the output
669: registers are the same as the input registers.) The XRF registers can
670: hold all modes, but only DF and SF modes can be manipulated in these
671: registers. The compiler should be allowed to use these as a fast spill
672: area. */
673: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
674: (XRF_REGNO_P(REGNO) \
675: ? (TARGET_88110 && GET_MODE_CLASS (MODE) == MODE_FLOAT) \
676: : (((MODE) != DImode && (MODE) != DFmode && (MODE) != DCmode) \
677: || ((REGNO) & 1) == 0))
678:
679: /* Value is 1 if it is a good idea to tie two pseudo registers
680: when one has mode MODE1 and one has mode MODE2.
681: If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
682: for any hard reg, then this must be 0 for correct output. */
683: #define MODES_TIEABLE_P(MODE1, MODE2) \
684: (((MODE1) == DFmode || (MODE1) == DCmode || (MODE1) == DImode \
685: || (TARGET_88110 && GET_MODE_CLASS (MODE1) == MODE_FLOAT)) \
686: == ((MODE2) == DFmode || (MODE2) == DCmode || (MODE2) == DImode \
687: || (TARGET_88110 && GET_MODE_CLASS (MODE2) == MODE_FLOAT)))
688:
689: /* Specify the registers used for certain standard purposes.
690: The values of these macros are register numbers. */
691:
692: /* the m88000 pc isn't overloaded on a register that the compiler knows about. */
693: /* #define PC_REGNUM */
694:
695: /* Register to use for pushing function arguments. */
696: #define STACK_POINTER_REGNUM 31
697:
698: /* Base register for access to local variables of the function. */
699: #define FRAME_POINTER_REGNUM 30
700:
701: /* Base register for access to arguments of the function. */
702: #define ARG_POINTER_REGNUM 0
703:
704: /* Register used in cases where a temporary is known to be safe to use. */
705: #define TEMP_REGNUM 10
706:
707: /* Register in which static-chain is passed to a function. */
708: #define STATIC_CHAIN_REGNUM 11
709:
710: /* Register in which address to store a structure value
711: is passed to a function. */
712: #define STRUCT_VALUE_REGNUM 12
713:
714: /* Register to hold the addressing base for position independent
715: code access to data items. */
716: #define PIC_OFFSET_TABLE_REGNUM 25
717:
718: /* Order in which registers are preferred (most to least). Use temp
719: registers, then param registers top down. Preserve registers are
720: top down to maximize use of double memory ops for register save.
721: The 88open reserved registers (r26-r29 and x30-x31) may commonly be used
722: in most environments with the -fcall-used- or -fcall-saved- options. */
723: #define REG_ALLOC_ORDER \
724: { \
725: 13, 12, 11, 10, 29, 28, 27, 26, \
726: 62, 63, 9, 8, 7, 6, 5, 4, \
727: 3, 2, 1, 53, 52, 51, 50, 49, \
728: 48, 47, 46, 45, 44, 43, 42, 41, \
729: 40, 39, 38, 37, 36, 35, 34, 33, \
730: 25, 24, 23, 22, 21, 20, 19, 18, \
731: 17, 16, 15, 14, 61, 60, 59, 58, \
732: 57, 56, 55, 54, 30, 31, 0, 32}
733:
734: /* Order for leaf functions. */
735: #define REG_LEAF_ALLOC_ORDER \
736: { \
737: 9, 8, 7, 6, 13, 12, 11, 10, \
738: 29, 28, 27, 26, 62, 63, 5, 4, \
739: 3, 2, 0, 53, 52, 51, 50, 49, \
740: 48, 47, 46, 45, 44, 43, 42, 41, \
741: 40, 39, 38, 37, 36, 35, 34, 33, \
742: 25, 24, 23, 22, 21, 20, 19, 18, \
743: 17, 16, 15, 14, 61, 60, 59, 58, \
744: 57, 56, 55, 54, 30, 31, 1, 32}
745:
746: /* Switch between the leaf and non-leaf orderings. The purpose is to avoid
747: write-over scoreboard delays between caller and callee. */
748: #define ORDER_REGS_FOR_LOCAL_ALLOC \
749: { \
750: static int leaf[] = REG_LEAF_ALLOC_ORDER; \
751: static int nonleaf[] = REG_ALLOC_ORDER; \
752: \
753: bcopy (regs_ever_live[1] ? nonleaf : leaf, reg_alloc_order, \
754: FIRST_PSEUDO_REGISTER * sizeof (int)); \
755: }
756:
757: /*** Register Classes ***/
758:
759: /* Define the classes of registers for register constraints in the
760: machine description. Also define ranges of constants.
761:
762: One of the classes must always be named ALL_REGS and include all hard regs.
763: If there is more than one class, another class must be named NO_REGS
764: and contain no registers.
765:
766: The name GENERAL_REGS must be the name of a class (or an alias for
767: another name such as ALL_REGS). This is the class of registers
768: that is allowed by "g" or "r" in a register constraint.
769: Also, registers outside this class are allocated only when
770: instructions express preferences for them.
771:
772: The classes must be numbered in nondecreasing order; that is,
773: a larger-numbered class must never be contained completely
774: in a smaller-numbered class.
775:
776: For any two classes, it is very desirable that there be another
777: class that represents their union. */
778:
779: /* The m88000 hardware has two kinds of registers. In addition, we denote
780: the arg pointer as a separate class. */
781:
782: enum reg_class { NO_REGS, AP_REG, XRF_REGS, GENERAL_REGS, AGRF_REGS,
783: XGRF_REGS, ALL_REGS, LIM_REG_CLASSES };
784:
785: #define N_REG_CLASSES (int) LIM_REG_CLASSES
786:
787: /* Give names of register classes as strings for dump file. */
788: #define REG_CLASS_NAMES {"NO_REGS", "AP_REG", "XRF_REGS", "GENERAL_REGS", \
789: "AGRF_REGS", "XGRF_REGS", "ALL_REGS" }
790:
791: /* Define which registers fit in which classes.
792: This is an initializer for a vector of HARD_REG_SET
793: of length N_REG_CLASSES. */
794: #define REG_CLASS_CONTENTS {{0x00000000, 0x00000000}, \
795: {0x00000001, 0x00000000}, \
796: {0x00000000, 0xffffffff}, \
797: {0xfffffffe, 0x00000000}, \
798: {0xffffffff, 0x00000000}, \
799: {0xfffffffe, 0xffffffff}, \
800: {0xffffffff, 0xffffffff}}
801:
802: /* The same information, inverted:
803: Return the class number of the smallest class containing
804: reg number REGNO. This could be a conditional expression
805: or could index an array. */
806: #define REGNO_REG_CLASS(REGNO) \
807: ((REGNO) ? ((REGNO < 32) ? GENERAL_REGS : XRF_REGS) : AP_REG)
808:
809: /* The class value for index registers, and the one for base regs. */
810: #define BASE_REG_CLASS AGRF_REGS
811: #define INDEX_REG_CLASS GENERAL_REGS
812:
813: /* Get reg_class from a letter such as appears in the machine description.
814: For the 88000, the following class/letter is defined for the XRF:
815: x - Extended register file */
816: #define REG_CLASS_FROM_LETTER(C) \
817: (((C) == 'x') ? XRF_REGS : NO_REGS)
818:
819: /* Macros to check register numbers against specific register classes.
820: These assume that REGNO is a hard or pseudo reg number.
821: They give nonzero only if REGNO is a hard reg of the suitable class
822: or a pseudo reg currently allocated to a suitable hard reg.
823: Since they use reg_renumber, they are safe only once reg_renumber
824: has been allocated, which happens in local-alloc.c. */
825: #define REGNO_OK_FOR_BASE_P(REGNO) \
826: ((REGNO) < FIRST_EXTENDED_REGISTER \
827: || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER)
828: #define REGNO_OK_FOR_INDEX_P(REGNO) \
829: (((REGNO) && (REGNO) < FIRST_EXTENDED_REGISTER) \
830: || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER)
831:
832: /* Given an rtx X being reloaded into a reg required to be
833: in class CLASS, return the class of reg to actually use.
834: In general this is just CLASS; but on some machines
835: in some cases it is preferable to use a more restrictive class.
836: Double constants should be in a register iff they can be made cheaply. */
837: #define PREFERRED_RELOAD_CLASS(X,CLASS) \
838: (CONSTANT_P(X) && (CLASS == XRF_REGS) ? NO_REGS : (CLASS))
839:
840: /* Return the register class of a scratch register needed to load IN
841: into a register of class CLASS in MODE. On the m88k, when PIC, we
842: need a temporary when loading some addresses into a register. */
843: #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
844: ((flag_pic \
845: && GET_CODE (IN) == CONST \
846: && GET_CODE (XEXP (IN, 0)) == PLUS \
847: && GET_CODE (XEXP (XEXP (IN, 0), 0)) == CONST_INT \
848: && ! SMALL_INT (XEXP (XEXP (IN, 0), 1))) ? GENERAL_REGS : NO_REGS)
849:
850: /* Return the maximum number of consecutive registers
851: needed to represent mode MODE in a register of class CLASS. */
852: #define CLASS_MAX_NREGS(CLASS, MODE) \
853: ((((CLASS) == XRF_REGS) ? 1 \
854: : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)))
855:
856: /* Letters in the range `I' through `P' in a register constraint string can
857: be used to stand for particular ranges of immediate operands. The C
858: expression is true iff C is a known letter and VALUE is appropriate for
859: that letter.
860:
861: For the m88000, the following constants are used:
862: `I' requires a non-negative 16-bit value.
863: `J' requires a non-positive 16-bit value.
864: `K' requires a non-negative value < 32.
865: `L' requires a constant with only the upper 16-bits set.
866: `M' requires constant values that can be formed with `set'.
867: `N' requires a negative value.
868: `O' requires zero.
869: `P' requires a non-negative value. */
870:
871: /* Quick tests for certain values. */
872: #define SMALL_INT(X) (SMALL_INTVAL (INTVAL (X)))
873: #define SMALL_INTVAL(I) ((unsigned) (I) < 0x10000)
874: #define ADD_INT(X) (ADD_INTVAL (INTVAL (X)))
875: #define ADD_INTVAL(I) ((unsigned) (I) + 0xffff < 0x1ffff)
876: #define POWER_OF_2(I) ((I) && POWER_OF_2_or_0(I))
877: #define POWER_OF_2_or_0(I) (((I) & ((unsigned)(I) - 1)) == 0)
878:
879: #define CONST_OK_FOR_LETTER_P(VALUE, C) \
880: ((C) == 'I' ? SMALL_INTVAL (VALUE) \
881: : (C) == 'J' ? SMALL_INTVAL (-(VALUE)) \
882: : (C) == 'K' ? (unsigned)(VALUE) < 32 \
883: : (C) == 'L' ? ((VALUE) & 0xffff) == 0 \
884: : (C) == 'M' ? integer_ok_for_set (VALUE) \
885: : (C) == 'N' ? (VALUE) < 0 \
886: : (C) == 'O' ? (VALUE) == 0 \
887: : (C) == 'P' ? (VALUE) >= 0 \
888: : 0)
889:
890: /* Similar, but for floating constants, and defining letters G and H.
891: Here VALUE is the CONST_DOUBLE rtx itself. For the m88000, the
892: constraints are: `G' requires zero, and `H' requires one or two. */
893: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
894: ((C) == 'G' ? (CONST_DOUBLE_HIGH (VALUE) == 0 \
895: && CONST_DOUBLE_LOW (VALUE) == 0) \
896: : 0)
897:
898: /* Letters in the range `Q' through `U' in a register constraint string
899: may be defined in a machine-dependent fashion to stand for arbitrary
900: operand types.
901:
902: For the m88k, `Q' handles addresses in a call context. */
903:
904: #define EXTRA_CONSTRAINT(OP, C) \
905: ((C) == 'Q' ? symbolic_address_p (OP) : 0)
906:
907: /*** Describing Stack Layout ***/
908:
909: /* Define this if pushing a word on the stack moves the stack pointer
910: to a smaller address. */
911: #define STACK_GROWS_DOWNWARD
912:
913: /* Define this if the addresses of local variable slots are at negative
914: offsets from the frame pointer. */
915: /* #define FRAME_GROWS_DOWNWARD */
916:
917: /* Offset from the frame pointer to the first local variable slot to be
918: allocated. For the m88k, the debugger wants the return address (r1)
919: stored at location r30+4, and the previous frame pointer stored at
920: location r30. */
921: #define STARTING_FRAME_OFFSET 8
922:
923: /* If we generate an insn to push BYTES bytes, this says how many the
924: stack pointer really advances by. The m88k has no push instruction. */
925: /* #define PUSH_ROUNDING(BYTES) */
926:
927: /* If defined, the maximum amount of space required for outgoing arguments
928: will be computed and placed into the variable
929: `current_function_outgoing_args_size'. No space will be pushed
930: onto the stack for each call; instead, the function prologue should
931: increase the stack frame size by this amount. */
932: #define ACCUMULATE_OUTGOING_ARGS
933:
934: /* Offset from the stack pointer register to the first location at which
935: outgoing arguments are placed. Use the default value zero. */
936: /* #define STACK_POINTER_OFFSET 0 */
937:
938: /* Offset of first parameter from the argument pointer register value.
939: Using an argument pointer, this is 0 for the m88k. GCC knows
940: how to eliminate the argument pointer references if necessary. */
941: #define FIRST_PARM_OFFSET(FNDECL) 0
942:
943: /* Define this if functions should assume that stack space has been
944: allocated for arguments even when their values are passed in
945: registers.
946:
947: The value of this macro is the size, in bytes, of the area reserved for
948: arguments passed in registers.
949:
950: This space can either be allocated by the caller or be a part of the
951: machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE'
952: says which. */
953: #define REG_PARM_STACK_SPACE(FNDECL) 32
954:
955: /* Define this macro if REG_PARM_STACK_SPACE is defined but stack
956: parameters don't skip the area specified by REG_PARM_STACK_SPACE.
957: Normally, when a parameter is not passed in registers, it is placed on
958: the stack beyond the REG_PARM_STACK_SPACE area. Defining this macro
959: suppresses this behavior and causes the parameter to be passed on the
960: stack in its natural location. */
961: #define STACK_PARMS_IN_REG_PARM_AREA
962:
963: /* Define this if it is the responsibility of the caller to allocate the
964: area reserved for arguments passed in registers. If
965: `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect of this
966: macro is to determine whether the space is included in
967: `current_function_outgoing_args_size'. */
968: /* #define OUTGOING_REG_PARM_STACK_SPACE */
969:
970: /* Offset from the stack pointer register to an item dynamically allocated
971: on the stack, e.g., by `alloca'.
972:
973: The default value for this macro is `STACK_POINTER_OFFSET' plus the
974: length of the outgoing arguments. The default is correct for most
975: machines. See `function.c' for details. */
976: /* #define STACK_DYNAMIC_OFFSET(FUNDECL) ... */
977:
978: /* Value is the number of bytes of arguments automatically
979: popped when returning from a subroutine call.
980: FUNTYPE is the data type of the function (as a tree),
981: or for a library call it is an identifier node for the subroutine name.
982: SIZE is the number of bytes of arguments passed on the stack. */
983: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0
984:
985: /* Define how to find the value returned by a function.
986: VALTYPE is the data type of the value (as a tree).
987: If the precise function being called is known, FUNC is its FUNCTION_DECL;
988: otherwise, FUNC is 0. */
989: #define FUNCTION_VALUE(VALTYPE, FUNC) \
990: gen_rtx (REG, \
991: TYPE_MODE (VALTYPE) == BLKmode ? SImode : TYPE_MODE (VALTYPE), \
992: 2)
993:
994: /* Define this if it differs from FUNCTION_VALUE. */
995: /* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) ... */
996:
997: /* Disable the promotion of some structures and unions to registers. */
998: #define RETURN_IN_MEMORY(TYPE) \
999: (TYPE_MODE (TYPE) == BLKmode \
1000: || ((TREE_CODE (TYPE) == RECORD_TYPE || TREE_CODE(TYPE) == UNION_TYPE) \
1001: && !(TYPE_MODE (TYPE) == SImode \
1002: || (TYPE_MODE (TYPE) == BLKmode \
1003: && TYPE_ALIGN (TYPE) == BITS_PER_WORD \
1004: && int_size_in_bytes (TYPE) == UNITS_PER_WORD))))
1005:
1006: /* Don't default to pcc-struct-return, because we have already specified
1007: exactly how to return structures in the RETURN_IN_MEMORY macro. */
1008: #define DEFAULT_PCC_STRUCT_RETURN 0
1009:
1010: /* Define how to find the value returned by a library function
1011: assuming the value has mode MODE. */
1012: #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 2)
1013:
1014: /* True if N is a possible register number for a function value
1015: as seen by the caller. */
1016: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2)
1017:
1018: /* Determine whether a function argument is passed in a register, and
1019: which register. See m88k.c. */
1020: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
1021: m88k_function_arg (CUM, MODE, TYPE, NAMED)
1022:
1023: /* Define this if it differs from FUNCTION_ARG. */
1024: /* #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) ... */
1025:
1026: /* A C expression for the number of words, at the beginning of an
1027: argument, must be put in registers. The value must be zero for
1028: arguments that are passed entirely in registers or that are entirely
1029: pushed on the stack. */
1030: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0)
1031:
1032: /* A C expression that indicates when an argument must be passed by
1033: reference. If nonzero for an argument, a copy of that argument is
1034: made in memory and a pointer to the argument is passed instead of the
1035: argument itself. The pointer is passed in whatever way is appropriate
1036: for passing a pointer to that type. */
1037: #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) (0)
1038:
1039: /* A C type for declaring a variable that is used as the first argument
1040: of `FUNCTION_ARG' and other related values. It suffices to count
1041: the number of words of argument so far. */
1042: #define CUMULATIVE_ARGS int
1043:
1044: /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to a
1045: function whose data type is FNTYPE. For a library call, FNTYPE is 0. */
1046: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0)
1047:
1048: /* A C statement (sans semicolon) to update the summarizer variable
1049: CUM to advance past an argument in the argument list. The values
1050: MODE, TYPE and NAMED describe that argument. Once this is done,
1051: the variable CUM is suitable for analyzing the *following* argument
1052: with `FUNCTION_ARG', etc. (TYPE is null for libcalls where that
1053: information may not be available.) */
1054: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1055: do { \
1056: enum machine_mode __mode = (TYPE) ? TYPE_MODE (TYPE) : (MODE); \
1057: if ((CUM & 1) \
1058: && (__mode == DImode || __mode == DFmode \
1059: || ((TYPE) && TYPE_ALIGN (TYPE) > BITS_PER_WORD))) \
1060: CUM++; \
1061: CUM += (((__mode != BLKmode) \
1062: ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE)) \
1063: + 3) / 4; \
1064: } while (0)
1065:
1066: /* True if N is a possible register number for function argument passing.
1067: On the m88000, these are registers 2 through 9. */
1068: #define FUNCTION_ARG_REGNO_P(N) ((N) <= 9 && (N) >= 2)
1069:
1070: /* A C expression which determines whether, and in which direction,
1071: to pad out an argument with extra space. The value should be of
1072: type `enum direction': either `upward' to pad above the argument,
1073: `downward' to pad below, or `none' to inhibit padding.
1074:
1075: This macro does not control the *amount* of padding; that is always
1076: just enough to reach the next multiple of `FUNCTION_ARG_BOUNDARY'. */
1077: #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1078: ((MODE) == BLKmode \
1079: || ((TYPE) && (TREE_CODE (TYPE) == RECORD_TYPE \
1080: || TREE_CODE (TYPE) == UNION_TYPE)) \
1081: ? upward : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY ? downward : none)
1082:
1083: /* If defined, a C expression that gives the alignment boundary, in bits,
1084: of an argument with the specified mode and type. If it is not defined,
1085: `PARM_BOUNDARY' is used for all arguments. */
1086: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
1087: (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_SIZE (MODE)) <= PARM_BOUNDARY \
1088: ? PARM_BOUNDARY : 2 * PARM_BOUNDARY)
1089:
1090: /* Generate necessary RTL for __builtin_saveregs().
1091: ARGLIST is the argument list; see expr.c. */
1092: #define EXPAND_BUILTIN_SAVEREGS(ARGLIST) m88k_builtin_saveregs (ARGLIST)
1093:
1094: /* Generate the assembly code for function entry. */
1095: #define FUNCTION_PROLOGUE(FILE, SIZE) m88k_begin_prologue(FILE, SIZE)
1096:
1097: /* Perform special actions at the point where the prologue ends. */
1098: #define FUNCTION_END_PROLOGUE(FILE) m88k_end_prologue(FILE)
1099:
1100: /* Output assembler code to FILE to increment profiler label # LABELNO
1101: for profiling a function entry. Redefined in m88kv3.h, m88kv4.h and
1102: m88kdgux.h. */
1103: #define FUNCTION_PROFILER(FILE, LABELNO) \
1104: output_function_profiler (FILE, LABELNO, "mcount", 1)
1105:
1106: /* Maximum length in instructions of the code output by FUNCTION_PROFILER. */
1107: #define FUNCTION_PROFILER_LENGTH (5+3+1+5)
1108:
1109: /* Output assembler code to FILE to initialize basic-block profiling for
1110: the current module. LABELNO is unique to each instance. */
1111: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
1112: output_function_block_profiler (FILE, LABELNO)
1113:
1114: /* Maximum length in instructions of the code output by
1115: FUNCTION_BLOCK_PROFILER. */
1116: #define FUNCTION_BLOCK_PROFILER_LENGTH (3+5+2+5)
1117:
1118: /* Output assembler code to FILE to increment the count associated with
1119: the basic block number BLOCKNO. */
1120: #define BLOCK_PROFILER(FILE, BLOCKNO) output_block_profiler (FILE, BLOCKNO)
1121:
1122: /* Maximum length in instructions of the code output by BLOCK_PROFILER. */
1123: #define BLOCK_PROFILER_LENGTH 4
1124:
1125: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1126: the stack pointer does not matter. The value is tested only in
1127: functions that have frame pointers.
1128: No definition is equivalent to always zero. */
1129: #define EXIT_IGNORE_STACK (1)
1130:
1131: /* Generate the assembly code for function exit. */
1132: #define FUNCTION_EPILOGUE(FILE, SIZE) m88k_end_epilogue(FILE, SIZE)
1133:
1134: /* Perform special actions at the point where the epilogue begins. */
1135: #define FUNCTION_BEGIN_EPILOGUE(FILE) m88k_begin_epilogue(FILE)
1136:
1137: /* Value should be nonzero if functions must have frame pointers.
1138: Zero means the frame pointer need not be set up (and parms
1139: may be accessed via the stack pointer) in functions that seem suitable.
1140: This is computed in `reload', in reload1.c. */
1141: #define FRAME_POINTER_REQUIRED \
1142: (frame_pointer_needed \
1143: || (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION))
1144:
1145: /* Definitions for register eliminations.
1146:
1147: We have two registers that can be eliminated on the m88k. First, the
1148: frame pointer register can often be eliminated in favor of the stack
1149: pointer register. Secondly, the argument pointer register can always be
1150: eliminated; it is replaced with either the stack or frame pointer. */
1151:
1152: /* This is an array of structures. Each structure initializes one pair
1153: of eliminable registers. The "from" register number is given first,
1154: followed by "to". Eliminations of the same "from" register are listed
1155: in order of preference. */
1156: #define ELIMINABLE_REGS \
1157: {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1158: { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
1159: { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
1160:
1161: /* Given FROM and TO register numbers, say whether this elimination
1162: is allowed. */
1163: #define CAN_ELIMINATE(FROM, TO) \
1164: (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
1165:
1166: /* Define the offset between two registers, one to be eliminated, and the other
1167: its replacement, at the start of a routine. */
1168: #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1169: { m88k_layout_frame (); \
1170: if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
1171: (OFFSET) = m88k_fp_offset; \
1172: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \
1173: (OFFSET) = m88k_stack_size - m88k_fp_offset; \
1174: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
1175: (OFFSET) = m88k_stack_size; \
1176: else \
1177: abort (); \
1178: }
1179:
1180: /*** Trampolines for Nested Functions ***/
1181:
1182: /* Output assembler code for a block containing the constant parts
1183: of a trampoline, leaving space for the variable parts.
1184:
1185: This block is placed on the stack and filled in. It is aligned
1186: 0 mod 128 and those portions that are executed are constant.
1187: This should work for instruction caches that have cache lines up
1188: to the aligned amount (128 is arbitrary), provided no other code
1189: producer is attempting to play the same game. This of course is
1190: in violation of any number of 88open standards. */
1191:
1192: #define TRAMPOLINE_TEMPLATE(FILE) \
1193: { \
1194: char buf[256]; \
1195: static int labelno = 0; \
1196: labelno++; \
1197: ASM_GENERATE_INTERNAL_LABEL (buf, "LTRMP", labelno); \
1198: /* Save the return address (r1) in the static chain reg (r11). */ \
1199: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[11], reg_names[1]); \
1200: /* Locate this block; transfer to the next instruction. */ \
1201: fprintf (FILE, "\tbsr\t %s\n", &buf[1]); \
1202: ASM_OUTPUT_INTERNAL_LABEL (FILE, "LTRMP", labelno); \
1203: /* Save r10; use it as the relative pointer; restore r1. */ \
1204: fprintf (FILE, "\tst\t %s,%s,24\n", reg_names[10], reg_names[1]); \
1205: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[10], reg_names[1]); \
1206: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[1], reg_names[11]); \
1207: /* Load the function's address and go there. */ \
1208: fprintf (FILE, "\tld\t %s,%s,32\n", reg_names[11], reg_names[10]); \
1209: fprintf (FILE, "\tjmp.n\t %s\n", reg_names[11]); \
1210: /* Restore r10 and load the static chain register. */ \
1211: fprintf (FILE, "\tld.d\t %s,%s,24\n", reg_names[10], reg_names[10]); \
1212: /* Storage: r10 save area, static chain, function address. */ \
1213: ASM_OUTPUT_INT (FILE, const0_rtx); \
1214: ASM_OUTPUT_INT (FILE, const0_rtx); \
1215: ASM_OUTPUT_INT (FILE, const0_rtx); \
1216: }
1217:
1218: /* Length in units of the trampoline for entering a nested function.
1219: This is really two components. The first 32 bytes are fixed and
1220: must be copied; the last 12 bytes are just storage that's filled
1221: in later. So for allocation purposes, it's 32+12 bytes, but for
1222: initialization purposes, it's 32 bytes. */
1223:
1224: #define TRAMPOLINE_SIZE (32+12)
1225:
1226: /* Alignment required for a trampoline. 128 is used to find the
1227: beginning of a line in the instruction cache and to allow for
1228: instruction cache lines of up to 128 bytes. */
1229:
1230: #define TRAMPOLINE_ALIGNMENT 128
1231:
1232: /* Emit RTL insns to initialize the variable parts of a trampoline.
1233: FNADDR is an RTX for the address of the function's pure code.
1234: CXT is an RTX for the static chain value for the function. */
1235:
1236: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1237: { \
1238: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 40)), FNADDR); \
1239: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 36)), CXT); \
1240: }
1241:
1242: /*** Library Subroutine Names ***/
1243:
1244: /* Define this macro if GNU CC should generate calls to the System V
1245: (and ANSI C) library functions `memcpy' and `memset' rather than
1246: the BSD functions `bcopy' and `bzero'. */
1247: #define TARGET_MEM_FUNCTIONS
1248:
1249: /*** Addressing Modes ***/
1250:
1251: #define EXTRA_CC_MODES CCEVENmode
1252:
1253: #define EXTRA_CC_NAMES "CCEVEN"
1254:
1255: #define SELECT_CC_MODE(OP,X,Y) CCmode
1256:
1257: /* #define HAVE_POST_INCREMENT */
1258: /* #define HAVE_POST_DECREMENT */
1259:
1260: /* #define HAVE_PRE_DECREMENT */
1261: /* #define HAVE_PRE_INCREMENT */
1262:
1263: /* Recognize any constant value that is a valid address. */
1264: #define CONSTANT_ADDRESS_P(X) \
1265: (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
1266: || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \
1267: || GET_CODE (X) == HIGH)
1268:
1269: /* Maximum number of registers that can appear in a valid memory address. */
1270: #define MAX_REGS_PER_ADDRESS 2
1271:
1272: /* The condition for memory shift insns. */
1273: #define SCALED_ADDRESS_P(ADDR) \
1274: (GET_CODE (ADDR) == PLUS \
1275: && (GET_CODE (XEXP (ADDR, 0)) == MULT \
1276: || GET_CODE (XEXP (ADDR, 1)) == MULT))
1277:
1278: /* Can the reference to X be made short? */
1279: #define SHORT_ADDRESS_P(X,TEMP) \
1280: ((TEMP) = (GET_CODE (X) == CONST ? get_related_value (X) : X), \
1281: ((TEMP) && GET_CODE (TEMP) == SYMBOL_REF && SYMBOL_REF_FLAG (TEMP)))
1282:
1283: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
1284: that is a valid memory address for an instruction.
1285: The MODE argument is the machine mode for the MEM expression
1286: that wants to use this address.
1287:
1288: On the m88000, a legitimate address has the form REG, REG+REG,
1289: REG+SMALLINT, REG+(REG*modesize) (REG[REG]), or SMALLINT.
1290:
1291: The register elimination process should deal with the argument
1292: pointer and frame pointer changing to REG+SMALLINT. */
1293:
1294: #define LEGITIMATE_INDEX_P(X, MODE) \
1295: ((GET_CODE (X) == CONST_INT \
1296: && SMALL_INT (X)) \
1297: || (REG_P (X) \
1298: && REG_OK_FOR_INDEX_P (X)) \
1299: || (GET_CODE (X) == MULT \
1300: && REG_P (XEXP (X, 0)) \
1301: && REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
1302: && GET_CODE (XEXP (X, 1)) == CONST_INT \
1303: && INTVAL (XEXP (X, 1)) == GET_MODE_SIZE (MODE)))
1304:
1305: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1306: { \
1307: register rtx _x; \
1308: if (REG_P (X)) \
1309: { \
1310: if (REG_OK_FOR_BASE_P (X)) \
1311: goto ADDR; \
1312: } \
1313: else if (GET_CODE (X) == PLUS) \
1314: { \
1315: register rtx _x0 = XEXP (X, 0); \
1316: register rtx _x1 = XEXP (X, 1); \
1317: if ((flag_pic \
1318: && _x0 == pic_offset_table_rtx \
1319: && (flag_pic == 2 \
1320: ? REG_P (_x1) \
1321: : (GET_CODE (_x1) == SYMBOL_REF \
1322: || GET_CODE (_x1) == LABEL_REF))) \
1323: || (REG_P (_x0) \
1324: && (REG_OK_FOR_BASE_P (_x0) \
1325: && LEGITIMATE_INDEX_P (_x1, MODE))) \
1326: || (REG_P (_x1) \
1327: && (REG_OK_FOR_BASE_P (_x1) \
1328: && LEGITIMATE_INDEX_P (_x0, MODE)))) \
1329: goto ADDR; \
1330: } \
1331: else if (GET_CODE (X) == LO_SUM) \
1332: { \
1333: register rtx _x0 = XEXP (X, 0); \
1334: register rtx _x1 = XEXP (X, 1); \
1335: if (((REG_P (_x0) \
1336: && REG_OK_FOR_BASE_P (_x0)) \
1337: || (GET_CODE (_x0) == SUBREG \
1338: && REG_P (SUBREG_REG (_x0)) \
1339: && REG_OK_FOR_BASE_P (SUBREG_REG (_x0)))) \
1340: && CONSTANT_P (_x1)) \
1341: goto ADDR; \
1342: } \
1343: else if (GET_CODE (X) == CONST_INT \
1344: && SMALL_INT (X)) \
1345: goto ADDR; \
1346: else if (SHORT_ADDRESS_P (X, _x)) \
1347: goto ADDR; \
1348: }
1349:
1350: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
1351: and check its validity for a certain class.
1352: We have two alternate definitions for each of them.
1353: The usual definition accepts all pseudo regs; the other rejects
1354: them unless they have been allocated suitable hard regs.
1355: The symbol REG_OK_STRICT causes the latter definition to be used.
1356:
1357: Most source files want to accept pseudo regs in the hope that
1358: they will get allocated to the class that the insn wants them to be in.
1359: Source files for reload pass need to be strict.
1360: After reload, it makes no difference, since pseudo regs have
1361: been eliminated by then. */
1362:
1363: #ifndef REG_OK_STRICT
1364:
1365: /* Nonzero if X is a hard reg that can be used as an index
1366: or if it is a pseudo reg. Not the argument pointer. */
1367: #define REG_OK_FOR_INDEX_P(X) \
1368: (!XRF_REGNO_P(REGNO (X)))
1369: /* Nonzero if X is a hard reg that can be used as a base reg
1370: or if it is a pseudo reg. */
1371: #define REG_OK_FOR_BASE_P(X) (REG_OK_FOR_INDEX_P (X))
1372:
1373: #else
1374:
1375: /* Nonzero if X is a hard reg that can be used as an index. */
1376: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1377: /* Nonzero if X is a hard reg that can be used as a base reg. */
1378: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1379:
1380: #endif
1381:
1382: /* Try machine-dependent ways of modifying an illegitimate address
1383: to be legitimate. If we find one, return the new, valid address.
1384: This macro is used in only one place: `memory_address' in explow.c.
1385:
1386: OLDX is the address as it was before break_out_memory_refs was called.
1387: In some cases it is useful to look at this to decide what needs to be done.
1388:
1389: MODE and WIN are passed so that this macro can use
1390: GO_IF_LEGITIMATE_ADDRESS.
1391:
1392: It is always safe for this macro to do nothing. It exists to recognize
1393: opportunities to optimize the output. */
1394:
1395: /* On the m88000, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */
1396:
1397: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
1398: { \
1399: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \
1400: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
1401: copy_to_mode_reg (SImode, XEXP (X, 1))); \
1402: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
1403: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
1404: copy_to_mode_reg (SImode, XEXP (X, 0))); \
1405: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \
1406: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
1407: force_operand (XEXP (X, 0), 0)); \
1408: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \
1409: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
1410: force_operand (XEXP (X, 1), 0)); \
1411: if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
1412: || GET_CODE (X) == LABEL_REF) \
1413: (X) = legitimize_address (flag_pic, X, 0, 0); \
1414: if (memory_address_p (MODE, X)) \
1415: goto WIN; }
1416:
1417: /* Go to LABEL if ADDR (a legitimate address expression)
1418: has an effect that depends on the machine mode it is used for.
1419: On the the m88000 this is never true. */
1420:
1421: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
1422:
1423: /* Nonzero if the constant value X is a legitimate general operand.
1424: It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
1425: #define LEGITIMATE_CONSTANT_P(X) (1)
1426:
1427: /*** Condition Code Information ***/
1428:
1429: /* C code for a data type which is used for declaring the `mdep'
1430: component of `cc_status'. It defaults to `int'. */
1431: /* #define CC_STATUS_MDEP int */
1432:
1433: /* A C expression to initialize the `mdep' field to "empty". */
1434: /* #define CC_STATUS_MDEP_INIT (cc_status.mdep = 0) */
1435:
1436: /* Macro to zap the normal portions of CC_STATUS, but leave the
1437: machine dependent parts (ie, literal synthesis) alone. */
1438: /* #define CC_STATUS_INIT_NO_MDEP \
1439: (cc_status.flags = 0, cc_status.value1 = 0, cc_status.value2 = 0) */
1440:
1441: /* When using a register to hold the condition codes, the cc_status
1442: mechanism cannot be used. */
1443: #define NOTICE_UPDATE_CC(EXP, INSN) (0)
1444:
1445: /*** Miscellaneous Parameters ***/
1446:
1447: /* Define the codes that are matched by predicates in m88k.c. */
1448: #define PREDICATE_CODES \
1449: {"move_operand", {SUBREG, REG, CONST_INT, LO_SUM, MEM}}, \
1450: {"call_address_operand", {SUBREG, REG, SYMBOL_REF, LABEL_REF, CONST}}, \
1451: {"arith_operand", {SUBREG, REG, CONST_INT}}, \
1452: {"arith5_operand", {SUBREG, REG, CONST_INT}}, \
1453: {"arith32_operand", {SUBREG, REG, CONST_INT}}, \
1454: {"arith64_operand", {SUBREG, REG, CONST_INT}}, \
1455: {"int5_operand", {CONST_INT}}, \
1456: {"int32_operand", {CONST_INT}}, \
1457: {"add_operand", {SUBREG, REG, CONST_INT}}, \
1458: {"reg_or_bbx_mask_operand", {SUBREG, REG, CONST_INT}}, \
1459: {"real_or_0_operand", {SUBREG, REG, CONST_DOUBLE}}, \
1460: {"reg_or_0_operand", {SUBREG, REG, CONST_INT}}, \
1461: {"relop", {EQ, NE, LT, LE, GE, GT, LTU, LEU, GEU, GTU}}, \
1462: {"even_relop", {EQ, LT, GT, LTU, GTU}}, \
1463: {"odd_relop", { NE, LE, GE, LEU, GEU}}, \
1464: {"partial_ccmode_register_operand", { SUBREG, REG}}, \
1465: {"relop_no_unsigned", {EQ, NE, LT, LE, GE, GT}}, \
1466: {"equality_op", {EQ, NE}}, \
1467: {"pc_or_label_ref", {PC, LABEL_REF}},
1468:
1469: /* The case table contains either words or branch instructions. This says
1470: which. We always claim that the vector is PC-relative. It is position
1471: independent when -fpic is used. */
1472: #define CASE_VECTOR_INSNS (TARGET_88100 || flag_pic)
1473:
1474: /* An alias for a machine mode name. This is the machine mode that
1475: elements of a jump-table should have. */
1476: #define CASE_VECTOR_MODE SImode
1477:
1478: /* Define this macro if jump-tables should contain relative addresses. */
1479: #define CASE_VECTOR_PC_RELATIVE
1480:
1481: /* Define this if control falls through a `case' insn when the index
1482: value is out of range. This means the specified default-label is
1483: actually ignored by the `case' insn proper. */
1484: /* #define CASE_DROPS_THROUGH */
1485:
1486: /* Define this to be the smallest number of different values for which it
1487: is best to use a jump-table instead of a tree of conditional branches.
1488: The default is 4 for machines with a casesi instruction and 5 otherwise.
1489: The best 88110 number is around 7, though the exact number isn't yet
1490: known. A third alternative for the 88110 is to use a binary tree of
1491: bb1 instructions on bits 2/1/0 if the range is dense. This may not
1492: win very much though. */
1493: #define CASE_VALUES_THRESHOLD (TARGET_88100 ? 4 : 7)
1494:
1495: /* Specify the tree operation to be used to convert reals to integers. */
1496: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
1497:
1498: /* This is the kind of divide that is easiest to do in the general case. */
1499: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
1500:
1501: /* Define this as 1 if `char' should by default be signed; else as 0. */
1502: #define DEFAULT_SIGNED_CHAR 1
1503:
1504: /* The 88open ABI says size_t is unsigned int. */
1505: #define SIZE_TYPE "unsigned int"
1506:
1507: /* Allow and ignore #sccs directives */
1508: #define SCCS_DIRECTIVE
1509:
1510: /* Handle #pragma pack and sometimes #pragma weak. */
1511: #define HANDLE_SYSV_PRAGMA
1512:
1513: /* Tell when to handle #pragma weak. This is only done for V.4. */
1514: #define HANDLE_PRAGMA_WEAK TARGET_SVR4
1515:
1516: /* Max number of bytes we can move from memory to memory
1517: in one reasonably fast instruction. */
1518: #define MOVE_MAX 8
1519:
1520: /* Define if operations between registers always perform the operation
1521: on the full register even if a narrower mode is specified. */
1522: #define WORD_REGISTER_OPERATIONS
1523:
1524: /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
1525: will either zero-extend or sign-extend. The value of this macro should
1526: be the code that says which one of the two operations is implicitly
1527: done, NIL if none. */
1528: #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
1529:
1530: /* Zero if access to memory by bytes is faster. */
1531: #define SLOW_BYTE_ACCESS 1
1532:
1533: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1534: is done just by pretending it is already truncated. */
1535: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1536:
1537: /* Define this if addresses of constant functions
1538: shouldn't be put through pseudo regs where they can be cse'd.
1539: Desirable on machines where ordinary constants are expensive
1540: but a CALL with constant address is cheap. */
1541: #define NO_FUNCTION_CSE
1542:
1543: /* Define this macro if an argument declared as `char' or
1544: `short' in a prototype should actually be passed as an
1545: `int'. In addition to avoiding errors in certain cases of
1546: mismatch, it also makes for better code on certain machines. */
1547: #define PROMOTE_PROTOTYPES
1548:
1549: /* Define this macro if a float function always returns float
1550: (even in traditional mode). Redefined in m88kluna.h. */
1551: #define TRADITIONAL_RETURN_FLOAT
1552:
1553: /* We assume that the store-condition-codes instructions store 0 for false
1554: and some other value for true. This is the value stored for true. */
1555: #define STORE_FLAG_VALUE -1
1556:
1557: /* Specify the machine mode that pointers have.
1558: After generation of rtl, the compiler makes no further distinction
1559: between pointers and any other objects of this machine mode. */
1560: #define Pmode SImode
1561:
1562: /* A function address in a call instruction
1563: is a word address (for indexing purposes)
1564: so give the MEM rtx word mode. */
1565: #define FUNCTION_MODE SImode
1566:
1567: /* A barrier will be aligned so account for the possible expansion.
1568: A volatile load may be preceded by a serializing instruction.
1569: Account for profiling code output at NOTE_INSN_PROLOGUE_END.
1570: Account for block profiling code at basic block boundaries. */
1571: #define ADJUST_INSN_LENGTH(RTX, LENGTH) \
1572: if (GET_CODE (RTX) == BARRIER \
1573: || (TARGET_SERIALIZE_VOLATILE \
1574: && GET_CODE (RTX) == INSN \
1575: && GET_CODE (PATTERN (RTX)) == SET \
1576: && ((GET_CODE (SET_SRC (PATTERN (RTX))) == MEM \
1577: && MEM_VOLATILE_P (SET_SRC (PATTERN (RTX))))))) \
1578: LENGTH += 1; \
1579: else if (GET_CODE (RTX) == NOTE \
1580: && NOTE_LINE_NUMBER (RTX) == NOTE_INSN_PROLOGUE_END) \
1581: { \
1582: if (profile_block_flag) \
1583: LENGTH += FUNCTION_BLOCK_PROFILER_LENGTH; \
1584: if (profile_flag) \
1585: LENGTH += (FUNCTION_PROFILER_LENGTH + REG_PUSH_LENGTH \
1586: + REG_POP_LENGTH); \
1587: } \
1588: else if (profile_block_flag \
1589: && (GET_CODE (RTX) == CODE_LABEL \
1590: || GET_CODE (RTX) == JUMP_INSN \
1591: || (GET_CODE (RTX) == INSN \
1592: && GET_CODE (PATTERN (RTX)) == SEQUENCE \
1593: && GET_CODE (XVECEXP (PATTERN (RTX), 0, 0)) == JUMP_INSN)))\
1594: LENGTH += BLOCK_PROFILER_LENGTH;
1595:
1596: /* Track the state of the last volatile memory reference. Clear the
1597: state with CC_STATUS_INIT for now. */
1598: #define CC_STATUS_INIT m88k_volatile_code = '\0'
1599:
1600: /* Compute the cost of computing a constant rtl expression RTX
1601: whose rtx-code is CODE. The body of this macro is a portion
1602: of a switch statement. If the code is computed here,
1603: return it with a return statement. Otherwise, break from the switch.
1604:
1605: We assume that any 16 bit integer can easily be recreated, so we
1606: indicate 0 cost, in an attempt to get GCC not to optimize things
1607: like comparison against a constant.
1608:
1609: The cost of CONST_DOUBLE is zero (if it can be placed in an insn, it
1610: is as good as a register; since it can't be placed in any insn, it
1611: won't do anything in cse, but it will cause expand_binop to pass the
1612: constant to the define_expands). */
1613: #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
1614: case CONST_INT: \
1615: if (SMALL_INT (RTX)) \
1616: return 0; \
1617: else if (SMALL_INTVAL (- INTVAL (RTX))) \
1618: return 2; \
1619: else if (classify_integer (SImode, INTVAL (RTX)) != m88k_oru_or) \
1620: return 4; \
1621: return 7; \
1622: case HIGH: \
1623: return 2; \
1624: case CONST: \
1625: case LABEL_REF: \
1626: case SYMBOL_REF: \
1627: if (flag_pic) \
1628: return (flag_pic == 2) ? 11 : 8; \
1629: return 5; \
1630: case CONST_DOUBLE: \
1631: return 0;
1632:
1633: /* Provide the costs of an addressing mode that contains ADDR.
1634: If ADDR is not a valid address, its cost is irrelevant.
1635: REG+REG is made slightly more expensive because it might keep
1636: a register live for longer than we might like. */
1637: #define ADDRESS_COST(ADDR) \
1638: (GET_CODE (ADDR) == REG ? 1 : \
1639: GET_CODE (ADDR) == LO_SUM ? 1 : \
1640: GET_CODE (ADDR) == HIGH ? 2 : \
1641: GET_CODE (ADDR) == MULT ? 1 : \
1642: GET_CODE (ADDR) != PLUS ? 4 : \
1643: (REG_P (XEXP (ADDR, 0)) && REG_P (XEXP (ADDR, 1))) ? 2 : 1)
1644:
1645: /* Provide the costs of a rtl expression. This is in the body of a
1646: switch on CODE. */
1647: #define RTX_COSTS(X,CODE,OUTER_CODE) \
1648: case MEM: \
1649: return COSTS_N_INSNS (2); \
1650: case MULT: \
1651: return COSTS_N_INSNS (3); \
1652: case DIV: \
1653: case UDIV: \
1654: case MOD: \
1655: case UMOD: \
1656: return COSTS_N_INSNS (38);
1657:
1658: /* A C expressions returning the cost of moving data of MODE from a register
1659: to or from memory. This is more costly than between registers. */
1660: #define MEMORY_MOVE_COST(MODE) 4
1661:
1662: /* Provide the cost of a branch. Exact meaning under development. */
1663: #define BRANCH_COST (TARGET_88100 ? 1 : 2)
1664:
1665: /* A C statement (sans semicolon) to update the integer variable COST
1666: based on the relationship between INSN that is dependent on
1667: DEP_INSN through the dependence LINK. The default is to make no
1668: adjustment to COST. On the m88k, ignore the cost of anti- and
1669: output-dependencies. On the m88100, a store can issue two cycles
1670: before the value (not the address) has finished computing. */
1671: #define ADJUST_COST(INSN,LINK,DEP_INSN,COST) \
1672: do { \
1673: if (REG_NOTE_KIND (LINK) != 0) \
1674: (COST) = 0; /* Anti or output dependence. */ \
1675: else if (! TARGET_88100 \
1676: && recog_memoized (INSN) >= 0 \
1677: && get_attr_type (INSN) == TYPE_STORE \
1678: && SET_SRC (PATTERN (INSN)) == SET_DEST (PATTERN (DEP_INSN))) \
1679: (COST) -= 4; /* 88110 store reservation station. */ \
1680: } while (0)
1681:
1682: /* Define this to be nonzero if the character `$' should be allowed
1683: by default in identifier names. */
1684: #define DOLLARS_IN_IDENTIFIERS 1
1685:
1686: /* Do not break .stabs pseudos into continuations. */
1687: #define DBX_CONTIN_LENGTH 0
1688:
1689: /*** Output of Assembler Code ***/
1690:
1691: /* Control the assembler format that we output. */
1692:
1693: /* Which assembler syntax. Redefined in m88kdgux.h. */
1694: #define VERSION_0300_SYNTAX TARGET_SVR4
1695:
1696: /* At some point, m88kv4.h will redefine this. */
1697: #define VERSION_0400_SYNTAX 0
1698:
1699: /* Allow pseudo-ops to be overridden. Override these in svr[34].h. */
1700: #undef INT_ASM_OP
1701: #undef ASCII_DATA_ASM_OP
1702: #undef CONST_SECTION_ASM_OP
1703: #undef CTORS_SECTION_ASM_OP
1704: #undef DTORS_SECTION_ASM_OP
1705: #undef INIT_SECTION_ASM_OP
1706: #undef FINI_SECTION_ASM_OP
1707: #undef TYPE_ASM_OP
1708: #undef SIZE_ASM_OP
1709: #undef WEAK_ASM_OP
1710: #undef SET_ASM_OP
1711: #undef SKIP_ASM_OP
1712: #undef COMMON_ASM_OP
1713: #undef ALIGN_ASM_OP
1714: #undef IDENT_ASM_OP
1715:
1716: /* These are used in varasm.c as well. */
1717: #define TEXT_SECTION_ASM_OP "text"
1718: #define DATA_SECTION_ASM_OP "data"
1719:
1720: /* Other sections. */
1721: #define CONST_SECTION_ASM_OP (VERSION_0300_SYNTAX \
1722: ? "section\t .rodata,\"a\"" \
1723: : "section\t .rodata,\"x\"")
1724: #define TDESC_SECTION_ASM_OP (VERSION_0300_SYNTAX \
1725: ? "section\t .tdesc,\"a\"" \
1726: : "section\t .tdesc,\"x\"")
1727:
1728: /* These must be constant strings for crtstuff.c. */
1729: #define CTORS_SECTION_ASM_OP "section\t .ctors,\"d\""
1730: #define DTORS_SECTION_ASM_OP "section\t .dtors,\"d\""
1731: #define INIT_SECTION_ASM_OP "section\t .init,\"x\""
1732: #define FINI_SECTION_ASM_OP "section\t .fini,\"x\""
1733:
1734: /* These are pretty much common to all assemblers. */
1735: #define IDENT_ASM_OP "ident"
1736: #define FILE_ASM_OP "file"
1737: #define SECTION_ASM_OP "section"
1738: #define SET_ASM_OP "def"
1739: #define GLOBAL_ASM_OP "global"
1740: #define ALIGN_ASM_OP "align"
1741: #define SKIP_ASM_OP "zero"
1742: #define COMMON_ASM_OP "comm"
1743: #define BSS_ASM_OP "bss"
1744: #define FLOAT_ASM_OP "float"
1745: #define DOUBLE_ASM_OP "double"
1746: #define INT_ASM_OP "word"
1747: #define ASM_LONG INT_ASM_OP
1748: #define SHORT_ASM_OP "half"
1749: #define CHAR_ASM_OP "byte"
1750: #define ASCII_DATA_ASM_OP "string"
1751:
1752: /* These are particular to the global pool optimization. */
1753: #define SBSS_ASM_OP "sbss"
1754: #define SCOMM_ASM_OP "scomm"
1755: #define SDATA_SECTION_ASM_OP "sdata"
1756:
1757: /* These are specific to PIC. */
1758: #define TYPE_ASM_OP "type"
1759: #define SIZE_ASM_OP "size"
1760: #define WEAK_ASM_OP "weak"
1761: #ifndef AS_BUG_POUND_TYPE /* Faulty assemblers require @ rather than #. */
1762: #undef TYPE_OPERAND_FMT
1763: #define TYPE_OPERAND_FMT "#%s"
1764: #endif
1765:
1766: /* These are specific to version 03.00 assembler syntax. */
1767: #define INTERNAL_ASM_OP "local"
1768: #define VERSION_ASM_OP "version"
1769: #define UNALIGNED_SHORT_ASM_OP "uahalf"
1770: #define UNALIGNED_INT_ASM_OP "uaword"
1771: #define PUSHSECTION_ASM_OP "section"
1772: #define POPSECTION_ASM_OP "previous"
1773:
1774: /* These are specific to the version 04.00 assembler syntax. */
1775: #define REQUIRES_88110_ASM_OP "requires_88110"
1776:
1777: /* Output any initial stuff to the assembly file. Always put out
1778: a file directive, even if not debugging.
1779:
1780: Immediately after putting out the file, put out a "sem.<value>"
1781: declaration. This should be harmless on other systems, and
1782: is used in DG/UX by the debuggers to supplement COFF. The
1783: fields in the integer value are as follows:
1784:
1785: Bits Value Meaning
1786: ---- ----- -------
1787: 0-1 0 No information about stack locations
1788: 1 Auto/param locations are based on r30
1789: 2 Auto/param locations are based on CFA
1790:
1791: 3-2 0 No information on dimension order
1792: 1 Array dims in sym table matches source language
1793: 2 Array dims in sym table is in reverse order
1794:
1795: 5-4 0 No information about the case of global names
1796: 1 Global names appear in the symbol table as in the source
1797: 2 Global names have been converted to lower case
1798: 3 Global names have been converted to upper case. */
1799:
1800: #ifdef SDB_DEBUGGING_INFO
1801: #define ASM_COFFSEM(FILE) \
1802: if (write_symbols == SDB_DEBUG) \
1803: { \
1804: fprintf (FILE, "\nsem.%x:\t\t; %s\n", \
1805: (((TARGET_OCS_FRAME_POSITION) ? 2 : 1) << 0) + (1 << 2) + (1 << 4),\
1806: (TARGET_OCS_FRAME_POSITION) \
1807: ? "frame is CFA, normal array dims, case unchanged" \
1808: : "frame is r30, normal array dims, case unchanged"); \
1809: }
1810: #else
1811: #define ASM_COFFSEM(FILE)
1812: #endif
1813:
1814: /* Output the first line of the assembly file. Redefined in m88kdgux.h. */
1815:
1816: #define ASM_FIRST_LINE(FILE) \
1817: do { \
1818: if (m88k_version) \
1819: fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, m88k_version); \
1820: } while (0)
1821:
1822: /* Override svr[34].h. */
1823: #undef ASM_FILE_START
1824: #define ASM_FILE_START(FILE) \
1825: output_file_start (FILE, f_options, sizeof f_options / sizeof f_options[0], \
1826: W_options, sizeof W_options / sizeof W_options[0])
1827:
1828: #undef ASM_FILE_END
1829:
1830: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) \
1831: do { fprintf (FILE, "\t%s\t ", FILE_ASM_OP); \
1832: output_quoted_string (FILE, NAME); \
1833: fprintf (FILE, "\n"); \
1834: } while (0)
1835:
1836: #ifdef SDB_DEBUGGING_INFO
1837: #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \
1838: if (m88k_prologue_done) \
1839: fprintf (FILE, "\n\tln\t %d\t\t\t\t; Real source line %d\n",\
1840: LINE - sdb_begin_function_line, LINE)
1841: #endif
1842:
1843: /* Code to handle #ident directives. Override svr[34].h definition. */
1844: #undef ASM_OUTPUT_IDENT
1845: #ifdef DBX_DEBUGGING_INFO
1846: #define ASM_OUTPUT_IDENT(FILE, NAME)
1847: #else
1848: #define ASM_OUTPUT_IDENT(FILE, NAME) \
1849: output_ascii (FILE, IDENT_ASM_OP, 4000, NAME, strlen (NAME));
1850: #endif
1851:
1852: /* Output to assembler file text saying following lines
1853: may contain character constants, extra white space, comments, etc. */
1854: #define ASM_APP_ON ""
1855:
1856: /* Output to assembler file text saying following lines
1857: no longer contain unusual constructs. */
1858: #define ASM_APP_OFF ""
1859:
1860: /* Format the assembly opcode so that the arguments are all aligned.
1861: The maximum instruction size is 8 characters (fxxx.xxx), so a tab and a
1862: space will do to align the output. Abandon the output if a `%' is
1863: encountered. */
1864: #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
1865: { \
1866: int ch; \
1867: char *orig_ptr; \
1868: \
1869: for (orig_ptr = (PTR); \
1870: (ch = *(PTR)) && ch != ' ' && ch != '\t' && ch != '\n' && ch != '%'; \
1871: (PTR)++) \
1872: putc (ch, STREAM); \
1873: \
1874: if (ch == ' ' && orig_ptr != (PTR) && (PTR) - orig_ptr < 8) \
1875: putc ('\t', STREAM); \
1876: }
1877:
1878: /* How to refer to registers in assembler output.
1879: This sequence is indexed by compiler's hard-register-number.
1880: Updated by OVERRIDE_OPTIONS to include the # for version 03.00 syntax. */
1881:
1882: #define REGISTER_NAMES \
1883: {"#r0"+1, "#r1"+1, "#r2"+1, "#r3"+1, "#r4"+1, "#r5"+1, "#r6"+1, "#r7"+1, \
1884: "#r8"+1, "#r9"+1, "#r10"+1,"#r11"+1,"#r12"+1,"#r13"+1,"#r14"+1,"#r15"+1,\
1885: "#r16"+1,"#r17"+1,"#r18"+1,"#r19"+1,"#r20"+1,"#r21"+1,"#r22"+1,"#r23"+1,\
1886: "#r24"+1,"#r25"+1,"#r26"+1,"#r27"+1,"#r28"+1,"#r29"+1,"#r30"+1,"#r31"+1,\
1887: "#x0"+1, "#x1"+1, "#x2"+1, "#x3"+1, "#x4"+1, "#x5"+1, "#x6"+1, "#x7"+1, \
1888: "#x8"+1, "#x9"+1, "#x10"+1,"#x11"+1,"#x12"+1,"#x13"+1,"#x14"+1,"#x15"+1,\
1889: "#x16"+1,"#x17"+1,"#x18"+1,"#x19"+1,"#x20"+1,"#x21"+1,"#x22"+1,"#x23"+1,\
1890: "#x24"+1,"#x25"+1,"#x26"+1,"#x27"+1,"#x28"+1,"#x29"+1,"#x30"+1,"#x31"+1}
1891:
1892: /* Define additional names for use in asm clobbers and asm declarations.
1893:
1894: We define the fake Condition Code register as an alias for reg 0 (which
1895: is our `condition code' register), so that condition codes can easily
1896: be clobbered by an asm. The carry bit in the PSR is now used. */
1897:
1898: #define ADDITIONAL_REGISTER_NAMES {"psr", 0, "cc", 0}
1899:
1900: /* How to renumber registers for dbx and gdb. */
1901: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1902:
1903: /* Tell when to declare ASM names. Override svr4.h to provide this hook. */
1904: #undef DECLARE_ASM_NAME
1905: #define DECLARE_ASM_NAME TARGET_SVR4
1906:
1907: /* Write the extra assembler code needed to declare a function properly. */
1908: #undef ASM_DECLARE_FUNCTION_NAME
1909: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1910: do { \
1911: if (DECLARE_ASM_NAME) \
1912: { \
1913: fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
1914: assemble_name (FILE, NAME); \
1915: putc (',', FILE); \
1916: fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
1917: putc ('\n', FILE); \
1918: } \
1919: ASM_OUTPUT_LABEL(FILE, NAME); \
1920: } while (0)
1921:
1922: /* Write the extra assembler code needed to declare an object properly. */
1923: #undef ASM_DECLARE_OBJECT_NAME
1924: #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
1925: do { \
1926: if (DECLARE_ASM_NAME) \
1927: { \
1928: fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
1929: assemble_name (FILE, NAME); \
1930: putc (',', FILE); \
1931: fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
1932: putc ('\n', FILE); \
1933: size_directive_output = 0; \
1934: if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
1935: { \
1936: size_directive_output = 1; \
1937: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1938: assemble_name (FILE, NAME); \
1939: fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
1940: } \
1941: } \
1942: ASM_OUTPUT_LABEL(FILE, NAME); \
1943: } while (0)
1944:
1945: /* Output the size directive for a decl in rest_of_decl_compilation
1946: in the case where we did not do so before the initializer.
1947: Once we find the error_mark_node, we know that the value of
1948: size_directive_output was set
1949: by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
1950:
1951: #undef ASM_FINISH_DECLARE_OBJECT
1952: #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
1953: do { \
1954: char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
1955: if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
1956: && DECLARE_ASM_NAME \
1957: && ! AT_END && TOP_LEVEL \
1958: && DECL_INITIAL (DECL) == error_mark_node \
1959: && !size_directive_output) \
1960: { \
1961: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1962: assemble_name (FILE, name); \
1963: fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
1964: } \
1965: } while (0)
1966:
1967: /* This is how to declare the size of a function. */
1968: #undef ASM_DECLARE_FUNCTION_SIZE
1969: #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
1970: do { \
1971: if (DECLARE_ASM_NAME) \
1972: { \
1973: if (!flag_inhibit_size_directive) \
1974: { \
1975: char label[256]; \
1976: static int labelno = 0; \
1977: labelno++; \
1978: ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
1979: ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
1980: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1981: assemble_name (FILE, (FNAME)); \
1982: fprintf (FILE, ",%s-", &label[1]); \
1983: assemble_name (FILE, (FNAME)); \
1984: putc ('\n', FILE); \
1985: } \
1986: } \
1987: } while (0)
1988:
1989: /* This is how to output the definition of a user-level label named NAME,
1990: such as the label on a static function or variable NAME. */
1991: #define ASM_OUTPUT_LABEL(FILE,NAME) \
1992: do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1993:
1994: /* This is how to output a command to make the user-level label named NAME
1995: defined for reference from other files. */
1996: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
1997: do { \
1998: fprintf (FILE, "\t%s\t ", GLOBAL_ASM_OP); \
1999: assemble_name (FILE, NAME); \
2000: putc ('\n', FILE); \
2001: } while (0)
2002:
2003: /* This is how to output a reference to a user-level label named NAME.
2004: Override svr[34].h. */
2005: #undef ASM_OUTPUT_LABELREF
2006: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
2007: { \
2008: if (! TARGET_NO_UNDERSCORES && ! VERSION_0300_SYNTAX) \
2009: fputc ('_', FILE); \
2010: fputs (NAME, FILE); \
2011: }
2012:
2013: /* This is how to output an internal numbered label where
2014: PREFIX is the class of label and NUM is the number within the class.
2015: For V.4, labels use `.' rather than `@'. */
2016:
2017: #undef ASM_OUTPUT_INTERNAL_LABEL
2018: #ifdef AS_BUG_DOT_LABELS /* The assembler requires a declaration of local. */
2019: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
2020: fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n\t%s\t .%s%d\n" : "@%s%d:\n", \
2021: PREFIX, NUM, INTERNAL_ASM_OP, PREFIX, NUM)
2022: #else
2023: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
2024: fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n" : "@%s%d:\n", PREFIX, NUM)
2025: #endif /* AS_BUG_DOT_LABELS */
2026:
2027: /* This is how to store into the string LABEL
2028: the symbol_ref name of an internal numbered label where
2029: PREFIX is the class of label and NUM is the number within the class.
2030: This is suitable for output with `assemble_name'. This must agree
2031: with ASM_OUTPUT_INTERNAL_LABEL above, except for being prefixed
2032: with an `*'. */
2033:
2034: #undef ASM_GENERATE_INTERNAL_LABEL
2035: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
2036: sprintf (LABEL, VERSION_0300_SYNTAX ? "*.%s%d" : "*@%s%d", PREFIX, NUM)
2037:
2038: /* Internal macro to get a single precision floating point value into
2039: an int, so we can print it's value in hex. */
2040: #define FLOAT_TO_INT_INTERNAL( FVALUE, IVALUE ) \
2041: { union { \
2042: REAL_VALUE_TYPE d; \
2043: struct { \
2044: unsigned sign : 1; \
2045: unsigned exponent1 : 1; \
2046: unsigned exponent2 : 3; \
2047: unsigned exponent3 : 7; \
2048: unsigned mantissa1 : 20; \
2049: unsigned mantissa2 : 3; \
2050: unsigned mantissa3 : 29; \
2051: } s; \
2052: } _u; \
2053: \
2054: union { \
2055: int i; \
2056: struct { \
2057: unsigned sign : 1; \
2058: unsigned exponent1 : 1; \
2059: unsigned exponent3 : 7; \
2060: unsigned mantissa1 : 20; \
2061: unsigned mantissa2 : 3; \
2062: } s; \
2063: } _u2; \
2064: \
2065: _u.d = REAL_VALUE_TRUNCATE (SFmode, FVALUE); \
2066: _u2.s.sign = _u.s.sign; \
2067: _u2.s.exponent1 = _u.s.exponent1; \
2068: _u2.s.exponent3 = _u.s.exponent3; \
2069: _u2.s.mantissa1 = _u.s.mantissa1; \
2070: _u2.s.mantissa2 = _u.s.mantissa2; \
2071: IVALUE = _u2.i; \
2072: }
2073:
2074: /* This is how to output an assembler line defining a `double' constant.
2075: Use "word" pseudos to avoid printing NaNs, infinity, etc. */
2076: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
2077: do { \
2078: union { REAL_VALUE_TYPE d; long l[2]; } x; \
2079: x.d = (VALUE); \
2080: fprintf (FILE, "\t%s\t 0x%.8x, 0x%.8x\n", INT_ASM_OP, \
2081: x.l[0], x.l[1]); \
2082: } while (0)
2083:
2084: /* This is how to output an assembler line defining a `float' constant. */
2085: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
2086: do { \
2087: int i; \
2088: FLOAT_TO_INT_INTERNAL (VALUE, i); \
2089: fprintf (FILE, "\t%s\t 0x%.8x\n", INT_ASM_OP, i); \
2090: } while (0)
2091:
2092: /* Likewise for `int', `short', and `char' constants. */
2093: #define ASM_OUTPUT_INT(FILE,VALUE) \
2094: ( fprintf (FILE, "\t%s\t ", INT_ASM_OP), \
2095: output_addr_const (FILE, (VALUE)), \
2096: fprintf (FILE, "\n"))
2097:
2098: #define ASM_OUTPUT_SHORT(FILE,VALUE) \
2099: ( fprintf (FILE, "\t%s\t ", SHORT_ASM_OP), \
2100: output_addr_const (FILE, (VALUE)), \
2101: fprintf (FILE, "\n"))
2102:
2103: #define ASM_OUTPUT_CHAR(FILE,VALUE) \
2104: ( fprintf (FILE, "\t%s\t ", CHAR_ASM_OP), \
2105: output_addr_const (FILE, (VALUE)), \
2106: fprintf (FILE, "\n"))
2107:
2108: /* This is how to output an assembler line for a numeric constant byte. */
2109: #define ASM_OUTPUT_BYTE(FILE,VALUE) \
2110: fprintf (FILE, "\t%s\t 0x%x\n", CHAR_ASM_OP, (VALUE))
2111:
2112: /* The single-byte pseudo-op is the default. Override svr[34].h. */
2113: #undef ASM_BYTE_OP
2114: #define ASM_BYTE_OP "byte"
2115: #undef ASM_OUTPUT_ASCII
2116: #define ASM_OUTPUT_ASCII(FILE, P, SIZE) \
2117: output_ascii (FILE, ASCII_DATA_ASM_OP, 48, P, SIZE)
2118:
2119: /* Override svr4.h. Change to the readonly data section for a table of
2120: addresses. final_scan_insn changes back to the text section. */
2121: #undef ASM_OUTPUT_CASE_LABEL
2122: #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
2123: do { \
2124: if (! CASE_VECTOR_INSNS) \
2125: { \
2126: readonly_data_section (); \
2127: ASM_OUTPUT_ALIGN (FILE, 2); \
2128: } \
2129: ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
2130: } while (0)
2131:
2132: /* Epilogue for case labels. This jump instruction is called by casesi
2133: to transfer to the appropriate branch instruction within the table.
2134: The label `@L<n>e' is coined to mark the end of the table. */
2135: #define ASM_OUTPUT_CASE_END(FILE, NUM, TABLE) \
2136: do { \
2137: if (CASE_VECTOR_INSNS) \
2138: { \
2139: char label[256]; \
2140: ASM_GENERATE_INTERNAL_LABEL (label, "L", NUM); \
2141: fprintf (FILE, "%se:\n", &label[1]); \
2142: if (! flag_delayed_branch) \
2143: fprintf (FILE, "\tlda\t %s,%s[%s]\n", reg_names[1], \
2144: reg_names[1], reg_names[m88k_case_index]); \
2145: fprintf (FILE, "\tjmp\t %s\n", reg_names[1]); \
2146: } \
2147: } while (0)
2148:
2149: /* This is how to output an element of a case-vector that is absolute. */
2150: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
2151: do { \
2152: char buffer[256]; \
2153: ASM_GENERATE_INTERNAL_LABEL (buffer, "L", VALUE); \
2154: fprintf (FILE, CASE_VECTOR_INSNS ? "\tbr\t %s\n" : "\tword\t %s\n", \
2155: &buffer[1]); \
2156: } while (0)
2157:
2158: /* This is how to output an element of a case-vector that is relative. */
2159: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
2160: ASM_OUTPUT_ADDR_VEC_ELT (FILE, VALUE)
2161:
2162: /* This is how to output an assembler line
2163: that says to advance the location counter
2164: to a multiple of 2**LOG bytes. */
2165: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
2166: if ((LOG) != 0) \
2167: fprintf (FILE, "\t%s\t %d\n", ALIGN_ASM_OP, 1<<(LOG))
2168:
2169: /* On the m88100, align the text address to half a cache boundary when it
2170: can only be reached by jumping. Pack code tightly when compiling
2171: crtstuff.c. */
2172: #define ASM_OUTPUT_ALIGN_CODE(FILE) \
2173: ASM_OUTPUT_ALIGN (FILE, \
2174: (TARGET_88100 && !flag_inhibit_size_directive ? 3 : 2))
2175:
2176: /* Override svr[34].h. */
2177: #undef ASM_OUTPUT_SKIP
2178: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
2179: fprintf (FILE, "\t%s\t %u\n", SKIP_ASM_OP, (SIZE))
2180:
2181: /* Override svr4.h. */
2182: #undef ASM_OUTPUT_EXTERNAL_LIBCALL
2183:
2184: /* This says how to output an assembler line to define a global common
2185: symbol. Size can be zero for the unusual case of a `struct { int : 0; }'.
2186: Override svr[34].h. */
2187: #undef ASM_OUTPUT_COMMON
2188: #undef ASM_OUTPUT_ALIGNED_COMMON
2189: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
2190: ( fprintf ((FILE), "\t%s\t ", \
2191: ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SCOMM_ASM_OP : COMMON_ASM_OP), \
2192: assemble_name ((FILE), (NAME)), \
2193: fprintf ((FILE), ",%u\n", (SIZE) ? (SIZE) : 1))
2194:
2195: /* This says how to output an assembler line to define a local common
2196: symbol. Override svr[34].h. */
2197: #undef ASM_OUTPUT_LOCAL
2198: #undef ASM_OUTPUT_ALIGNED_LOCAL
2199: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
2200: ( fprintf ((FILE), "\t%s\t ", \
2201: ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SBSS_ASM_OP : BSS_ASM_OP), \
2202: assemble_name ((FILE), (NAME)), \
2203: fprintf ((FILE), ",%u,%d\n", (SIZE) ? (SIZE) : 1, (SIZE) <= 4 ? 4 : 8))
2204:
2205: /* Store in OUTPUT a string (made with alloca) containing
2206: an assembler-name for a local static variable named NAME.
2207: LABELNO is an integer which is different for each call. */
2208: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
2209: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
2210: sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
2211:
2212: /* This is how to output an insn to push a register on the stack.
2213: It need not be very fast code. */
2214: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
2215: fprintf (FILE, "\tsubu\t %s,%s,%d\n\tst\t %s,%s,0\n", \
2216: reg_names[STACK_POINTER_REGNUM], \
2217: reg_names[STACK_POINTER_REGNUM], \
2218: (STACK_BOUNDARY / BITS_PER_UNIT), \
2219: reg_names[REGNO], \
2220: reg_names[STACK_POINTER_REGNUM])
2221:
2222: /* Length in instructions of the code output by ASM_OUTPUT_REG_PUSH. */
2223: #define REG_PUSH_LENGTH 2
2224:
2225: /* This is how to output an insn to pop a register from the stack. */
2226: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
2227: fprintf (FILE, "\tld\t %s,%s,0\n\taddu\t %s,%s,%d\n", \
2228: reg_names[REGNO], \
2229: reg_names[STACK_POINTER_REGNUM], \
2230: reg_names[STACK_POINTER_REGNUM], \
2231: reg_names[STACK_POINTER_REGNUM], \
2232: (STACK_BOUNDARY / BITS_PER_UNIT))
2233:
2234: /* Length in instructions of the code output by ASM_OUTPUT_REG_POP. */
2235: #define REG_POP_LENGTH 2
2236:
2237: /* Define the parentheses used to group arithmetic operations
2238: in assembler code. */
2239: #define ASM_OPEN_PAREN "("
2240: #define ASM_CLOSE_PAREN ")"
2241:
2242: /* Define results of standard character escape sequences. */
2243: #define TARGET_BELL 007
2244: #define TARGET_BS 010
2245: #define TARGET_TAB 011
2246: #define TARGET_NEWLINE 012
2247: #define TARGET_VT 013
2248: #define TARGET_FF 014
2249: #define TARGET_CR 015
2250:
2251: /* Macros to deal with OCS debug information */
2252:
2253: #define OCS_START_PREFIX "Ltb"
2254: #define OCS_END_PREFIX "Lte"
2255:
2256: #define PUT_OCS_FUNCTION_START(FILE) \
2257: { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_START_PREFIX, m88k_function_number); }
2258:
2259: #define PUT_OCS_FUNCTION_END(FILE) \
2260: { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_END_PREFIX, m88k_function_number); }
2261:
2262: /* Macros for debug information */
2263: #define DEBUGGER_AUTO_OFFSET(X) \
2264: (m88k_debugger_offset (X, 0) \
2265: + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
2266:
2267: #define DEBUGGER_ARG_OFFSET(OFFSET, X) \
2268: (m88k_debugger_offset (X, OFFSET) \
2269: + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
2270:
2271: /* Macros to deal with SDB debug information */
2272: #ifdef SDB_DEBUGGING_INFO
2273:
2274: /* Output structure tag names even when it causes a forward reference. */
2275: #define SDB_ALLOW_FORWARD_REFERENCES
2276:
2277: /* Print out extra debug information in the assembler file */
2278: #define PUT_SDB_SCL(a) \
2279: do { \
2280: register int s = (a); \
2281: register char *scl; \
2282: switch (s) \
2283: { \
2284: case C_EFCN: scl = "end of function"; break; \
2285: case C_NULL: scl = "NULL storage class"; break; \
2286: case C_AUTO: scl = "automatic"; break; \
2287: case C_EXT: scl = "external"; break; \
2288: case C_STAT: scl = "static"; break; \
2289: case C_REG: scl = "register"; break; \
2290: case C_EXTDEF: scl = "external definition"; break; \
2291: case C_LABEL: scl = "label"; break; \
2292: case C_ULABEL: scl = "undefined label"; break; \
2293: case C_MOS: scl = "structure member"; break; \
2294: case C_ARG: scl = "argument"; break; \
2295: case C_STRTAG: scl = "structure tag"; break; \
2296: case C_MOU: scl = "union member"; break; \
2297: case C_UNTAG: scl = "union tag"; break; \
2298: case C_TPDEF: scl = "typedef"; break; \
2299: case C_USTATIC: scl = "uninitialized static"; break; \
2300: case C_ENTAG: scl = "enumeration tag"; break; \
2301: case C_MOE: scl = "member of enumeration"; break; \
2302: case C_REGPARM: scl = "register parameter"; break; \
2303: case C_FIELD: scl = "bit field"; break; \
2304: case C_BLOCK: scl = "block start/end"; break; \
2305: case C_FCN: scl = "function start/end"; break; \
2306: case C_EOS: scl = "end of structure"; break; \
2307: case C_FILE: scl = "filename"; break; \
2308: case C_LINE: scl = "line"; break; \
2309: case C_ALIAS: scl = "duplicated tag"; break; \
2310: case C_HIDDEN: scl = "hidden"; break; \
2311: default: scl = "unknown"; break; \
2312: } \
2313: \
2314: fprintf(asm_out_file, "\tscl\t %d\t\t\t\t; %s\n", s, scl); \
2315: } while (0)
2316:
2317: #define PUT_SDB_TYPE(a) \
2318: do { \
2319: register int t = (a); \
2320: static char buffer[100]; \
2321: register char *p = buffer, *q; \
2322: register int typ = t; \
2323: register int i,d; \
2324: \
2325: for (i = 0; i <= 5; i++) \
2326: { \
2327: switch ((typ >> ((i*N_TSHIFT) + N_BTSHFT)) & 03) \
2328: { \
2329: case DT_PTR: \
2330: strcpy (p, "ptr to "); \
2331: p += sizeof("ptr to"); \
2332: break; \
2333: \
2334: case DT_ARY: \
2335: strcpy (p, "array of "); \
2336: p += sizeof("array of"); \
2337: break; \
2338: \
2339: case DT_FCN: \
2340: strcpy (p, "func ret "); \
2341: p += sizeof("func ret"); \
2342: break; \
2343: } \
2344: } \
2345: \
2346: switch (typ & N_BTMASK) \
2347: { \
2348: case T_NULL: q = "<no type>"; break; \
2349: case T_CHAR: q = "char"; break; \
2350: case T_SHORT: q = "short"; break; \
2351: case T_INT: q = "int"; break; \
2352: case T_LONG: q = "long"; break; \
2353: case T_FLOAT: q = "float"; break; \
2354: case T_DOUBLE: q = "double"; break; \
2355: case T_STRUCT: q = "struct"; break; \
2356: case T_UNION: q = "union"; break; \
2357: case T_ENUM: q = "enum"; break; \
2358: case T_MOE: q = "enum member"; break; \
2359: case T_UCHAR: q = "unsigned char"; break; \
2360: case T_USHORT: q = "unsigned short"; break; \
2361: case T_UINT: q = "unsigned int"; break; \
2362: case T_ULONG: q = "unsigned long"; break; \
2363: default: q = "void"; break; \
2364: } \
2365: \
2366: strcpy (p, q); \
2367: fprintf(asm_out_file, "\ttype\t %d\t\t\t\t; %s\n", \
2368: t, buffer); \
2369: } while (0)
2370:
2371: #define PUT_SDB_INT_VAL(a) \
2372: fprintf (asm_out_file, "\tval\t %d\n", (a))
2373:
2374: #define PUT_SDB_VAL(a) \
2375: ( fprintf (asm_out_file, "\tval\t "), \
2376: output_addr_const (asm_out_file, (a)), \
2377: fputc ('\n', asm_out_file))
2378:
2379: #define PUT_SDB_DEF(a) \
2380: do { fprintf (asm_out_file, "\tsdef\t "); \
2381: ASM_OUTPUT_LABELREF (asm_out_file, a); \
2382: fputc ('\n', asm_out_file); \
2383: } while (0)
2384:
2385: #define PUT_SDB_PLAIN_DEF(a) \
2386: fprintf(asm_out_file,"\tsdef\t .%s\n", a)
2387:
2388: /* Simply and endef now. */
2389: #define PUT_SDB_ENDEF \
2390: fputs("\tendef\n\n", asm_out_file)
2391:
2392: #define PUT_SDB_SIZE(a) \
2393: fprintf (asm_out_file, "\tsize\t %d\n", (a))
2394:
2395: /* Max dimensions to store for debug information (limited by COFF). */
2396: #define SDB_MAX_DIM 6
2397:
2398: /* New method for dim operations. */
2399: #define PUT_SDB_START_DIM \
2400: fputs("\tdim\t ", asm_out_file)
2401:
2402: /* How to end the DIM sequence. */
2403: #define PUT_SDB_LAST_DIM(a) \
2404: fprintf(asm_out_file, "%d\n", a)
2405:
2406: #define PUT_SDB_TAG(a) \
2407: do { \
2408: fprintf (asm_out_file, "\ttag\t "); \
2409: ASM_OUTPUT_LABELREF (asm_out_file, a); \
2410: fputc ('\n', asm_out_file); \
2411: } while( 0 )
2412:
2413: #define PUT_SDB_BLOCK_OR_FUNCTION(NAME, SCL, LINE) \
2414: do { \
2415: fprintf (asm_out_file, "\n\tsdef\t %s\n\tval\t .\n", \
2416: NAME); \
2417: PUT_SDB_SCL( SCL ); \
2418: fprintf (asm_out_file, "\tline\t %d\n\tendef\n\n", \
2419: (LINE)); \
2420: } while (0)
2421:
2422: #define PUT_SDB_BLOCK_START(LINE) \
2423: PUT_SDB_BLOCK_OR_FUNCTION (".bb", C_BLOCK, (LINE))
2424:
2425: #define PUT_SDB_BLOCK_END(LINE) \
2426: PUT_SDB_BLOCK_OR_FUNCTION (".eb", C_BLOCK, (LINE))
2427:
2428: #define PUT_SDB_FUNCTION_START(LINE) \
2429: do { \
2430: fprintf (asm_out_file, "\tln\t 1\n"); \
2431: PUT_SDB_BLOCK_OR_FUNCTION (".bf", C_FCN, (LINE)); \
2432: } while (0)
2433:
2434: #define PUT_SDB_FUNCTION_END(LINE) \
2435: do { \
2436: PUT_SDB_BLOCK_OR_FUNCTION (".ef", C_FCN, (LINE)); \
2437: } while (0)
2438:
2439: #define PUT_SDB_EPILOGUE_END(NAME) \
2440: do { \
2441: text_section (); \
2442: fprintf (asm_out_file, "\n\tsdef\t "); \
2443: ASM_OUTPUT_LABELREF(asm_out_file, (NAME)); \
2444: fputc('\n', asm_out_file); \
2445: PUT_SDB_SCL( C_EFCN ); \
2446: fprintf (asm_out_file, "\tendef\n\n"); \
2447: } while (0)
2448:
2449: #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
2450: sprintf ((BUFFER), ".%dfake", (NUMBER));
2451:
2452: #endif /* SDB_DEBUGGING_INFO */
2453:
2454: /* Support const and tdesc sections. Generally, a const section will
2455: be distinct from the text section whenever we do V.4-like things
2456: and so follows DECLARE_ASM_NAME. Note that strings go in text
2457: rather than const. Override svr[34].h. */
2458:
2459: #undef USE_CONST_SECTION
2460: #undef EXTRA_SECTIONS
2461:
2462: #define USE_CONST_SECTION DECLARE_ASM_NAME
2463:
2464: #if defined(USING_SVR4_H)
2465:
2466: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors
2467: #define INIT_SECTION_FUNCTION
2468: #define FINI_SECTION_FUNCTION
2469:
2470: #else
2471: #if defined(USING_SVR3_H)
2472:
2473: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors, \
2474: in_init, in_fini
2475:
2476: #else /* m88kluna or other not based on svr[34].h. */
2477:
2478: #undef INIT_SECTION_ASM_OP
2479: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata
2480: #define CONST_SECTION_FUNCTION \
2481: void \
2482: const_section () \
2483: { \
2484: text_section(); \
2485: }
2486: #define CTORS_SECTION_FUNCTION
2487: #define DTORS_SECTION_FUNCTION
2488: #define INIT_SECTION_FUNCTION
2489: #define FINI_SECTION_FUNCTION
2490:
2491: #endif /* USING_SVR3_H */
2492: #endif /* USING_SVR4_H */
2493:
2494: #undef EXTRA_SECTION_FUNCTIONS
2495: #define EXTRA_SECTION_FUNCTIONS \
2496: CONST_SECTION_FUNCTION \
2497: \
2498: void \
2499: tdesc_section () \
2500: { \
2501: if (in_section != in_tdesc) \
2502: { \
2503: fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \
2504: in_section = in_tdesc; \
2505: } \
2506: } \
2507: \
2508: void \
2509: sdata_section () \
2510: { \
2511: if (in_section != in_sdata) \
2512: { \
2513: fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
2514: in_section = in_sdata; \
2515: } \
2516: } \
2517: \
2518: CTORS_SECTION_FUNCTION \
2519: DTORS_SECTION_FUNCTION \
2520: INIT_SECTION_FUNCTION \
2521: FINI_SECTION_FUNCTION
2522:
2523: /* A C statement or statements to switch to the appropriate
2524: section for output of DECL. DECL is either a `VAR_DECL' node
2525: or a constant of some sort. RELOC indicates whether forming
2526: the initial value of DECL requires link-time relocations.
2527:
2528: For strings, the section is selected before the segment info is encoded. */
2529: #undef SELECT_SECTION
2530: #define SELECT_SECTION(DECL,RELOC) \
2531: { \
2532: if (TREE_CODE (DECL) == STRING_CST) \
2533: { \
2534: if (! flag_writable_strings) \
2535: const_section (); \
2536: else if (m88k_gp_threshold > 0 \
2537: && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \
2538: sdata_section (); \
2539: else \
2540: data_section (); \
2541: } \
2542: else if (TREE_CODE (DECL) == VAR_DECL) \
2543: { \
2544: if (SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0))) \
2545: sdata_section (); \
2546: else if ((flag_pic && RELOC) \
2547: || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
2548: data_section (); \
2549: else \
2550: const_section (); \
2551: } \
2552: else \
2553: const_section (); \
2554: }
2555:
2556: /* Jump tables consist of branch instructions and should be output in
2557: the text section. When we use a table of addresses, we explicitly
2558: change to the readonly data section. */
2559: #define JUMP_TABLES_IN_TEXT_SECTION 1
2560:
2561: /* Define this macro if references to a symbol must be treated differently
2562: depending on something about the variable or function named by the
2563: symbol (such as what section it is in).
2564:
2565: The macro definition, if any, is executed immediately after the rtl for
2566: DECL has been created and stored in `DECL_RTL (DECL)'. The value of the
2567: rtl will be a `mem' whose address is a `symbol_ref'.
2568:
2569: For the m88k, determine if the item should go in the global pool. */
2570: #define ENCODE_SECTION_INFO(DECL) \
2571: do { \
2572: if (m88k_gp_threshold > 0) \
2573: if (TREE_CODE (DECL) == VAR_DECL) \
2574: { \
2575: if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
2576: { \
2577: int size = int_size_in_bytes (TREE_TYPE (DECL)); \
2578: \
2579: if (size > 0 && size <= m88k_gp_threshold) \
2580: SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \
2581: } \
2582: } \
2583: else if (TREE_CODE (DECL) == STRING_CST \
2584: && flag_writable_strings \
2585: && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \
2586: SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 1; \
2587: } while (0)
2588:
2589: /* Print operand X (an rtx) in assembler syntax to file FILE.
2590: CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
2591: For `%' followed by punctuation, CODE is the punctuation and X is null. */
2592: #define PRINT_OPERAND_PUNCT_VALID_P(c) \
2593: ((c) == '#' || (c) == '.' || (c) == '!' || (c) == '*' || (c) == ';')
2594:
2595: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
2596:
2597: /* Print a memory address as an operand to reference that memory location. */
2598: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
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