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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 Free Software Foundation, Inc.
4: Contributed by Michael Tiemann ([email protected])
5: Enhanced by Michael Meissner ([email protected])
6: Currently supported 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:
87: extern int m88k_gp_threshold;
88: extern int m88k_prologue_done;
89: extern int m88k_function_number;
90: extern int m88k_fp_offset;
91: extern int m88k_stack_size;
92: extern int m88k_case_index;
93:
94: extern struct rtx_def *m88k_compare_reg;
95: extern struct rtx_def *m88k_compare_op0;
96: extern struct rtx_def *m88k_compare_op1;
97:
1.1.1.2 ! root 98: extern enum attr_cpu m88k_cpu;
! 99:
1.1 root 100: extern int null_epilogue ();
101: extern int integer_ok_for_set ();
102: extern int m88k_debugger_offset ();
103: extern void m88k_handle_pragma_token ();
104:
105: extern void emit_bcnd ();
106: extern void expand_block_move ();
107: extern void check_float_value ();
108: extern void m88k_layout_frame ();
109: extern void m88k_output_prologue ();
110: extern void m88k_output_epilogue ();
111: extern void output_function_profiler ();
112: extern void output_function_block_profiler ();
113: extern void output_block_profiler ();
114: extern void output_file_start ();
115: extern void output_ascii ();
116: extern void output_label ();
117: extern void print_operand ();
118: extern void print_operand_address ();
119:
120: extern char *output_load_const_int ();
121: extern char *output_load_const_float ();
122: extern char *output_load_const_double ();
123: extern char *output_load_const_dimode ();
124: extern char *output_and ();
125: extern char *output_ior ();
126: extern char *output_xor ();
127: extern char *output_call ();
128:
129: extern struct rtx_def *emit_test ();
130: extern struct rtx_def *legitimize_address ();
131: extern struct rtx_def *legitimize_operand ();
132: extern struct rtx_def *m88k_function_arg ();
133: extern struct rtx_def *m88k_builtin_saveregs ();
134:
135: extern enum m88k_instruction classify_integer ();
136:
137: /* external variables defined elsewhere in the compiler */
138:
139: extern int target_flags; /* -m compiler switches */
140: extern int frame_pointer_needed; /* current function has a FP */
141: extern int current_function_pretend_args_size; /* args size without ... */
142: extern int flag_delayed_branch; /* -fdelayed-branch */
143: extern int flag_pic; /* -fpic */
144: extern char * reg_names[];
145:
146: /* Specify the default monitors. The meaning of these values can
147: be obtained by doing "grep MONITOR_GCC *m88k*". Generally, the
148: values downward from 0x8000 are tests that will soon go away.
149: values upward from 0x1 are generally useful tests that will remain. */
150:
151: #ifndef MONITOR_GCC
152: #define MONITOR_GCC 0
153: #endif
154:
155: /*** Controlling the Compilation Driver, `gcc' ***/
156:
157: /* Some machines may desire to change what optimizations are performed for
158: various optimization levels. This macro, if defined, is executed once
159: just after the optimization level is determined and before the remainder
160: of the command options have been parsed. Values set in this macro are
161: used as the default values for the other command line options.
162:
163: LEVEL is the optimization level specified; 2 if -O2 is specified,
164: 1 if -O is specified, and 0 if neither is specified. */
165:
166: /* This macro used to store 0 in flag_signed_bitfields.
167: Not only is that misuse of this macro; the whole idea is wrong.
168:
169: The GNU C dialect makes bitfields signed by default,
170: regardless of machine type. Making any machine inconsistent in this
171: regard is bad for portability.
172:
173: I chose to make bitfields signed by default because this is consistent
174: with the way ordinary variables are handled: `int' equals `signed int'.
175: If there is a good reason to prefer making bitfields unsigned by default,
176: it cannot have anything to do with the choice of machine.
177: If the reason is good enough, we should change the convention for all machines.
178:
179: -- rms, 20 July 1991. */
180:
181: #define OPTIMIZATION_OPTIONS(LEVEL) \
182: do { \
183: if (LEVEL) \
184: { \
185: flag_omit_frame_pointer = 1; \
186: } \
187: } while (0)
188:
189: /* LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC defined in svr3.h.
190: ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC redefined
191: in svr4.h.
192: CPP_SPEC, ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and
193: STARTFILE_SPEC redefined in m88kdgux.h. */
194:
195: /*** Run-time Target Specification ***/
196:
197: /* Names to predefine in the preprocessor for this target machine.
198: Redefined in m88kv3.h, m88kv4.h, m88kdgux.h, and m88kluna.h. */
199: #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -D__CLASSIFY_TYPE__=2"
200:
201: #define TARGET_VERSION fprintf (stderr, " (%s%s)", \
202: VERSION_INFO1, VERSION_INFO2)
203:
204: /* Print subsidiary information on the compiler version in use.
205: Redefined in m88kv4.h, and m88kluna.h. */
206: #define VERSION_INFO1 "88open OCS/BCS, "
1.1.1.2 ! root 207: #define VERSION_INFO2 "20 Mar 1992"
1.1 root 208: #define VERSION_STRING version_string
1.1.1.2 ! root 209: #define TM_SCCS_ID "@(#)m88k.h 2.0.3.6 20 Mar 1992 08:33:40"
1.1 root 210:
211: /* Run-time compilation parameters selecting different hardware subsets. */
212:
213: /* Macro to define tables used to set the flags.
214: This is a list in braces of pairs in braces,
215: each pair being { "NAME", VALUE }
216: where VALUE is the bits to set or minus the bits to clear.
217: An empty string NAME is used to identify the default VALUE. */
218:
219: #define MASK_88100 0x00000001 /* Target m88100 */
220: #define MASK_88110 0x00000002 /* Target m88110 */
221: #define MASK_OCS_DEBUG_INFO 0x00000004 /* Emit .tdesc info */
222: #define MASK_OCS_FRAME_POSITION 0x00000008 /* Debug frame = CFA, not r30 */
223: #define MASK_SVR4 0x00000010 /* Target is AT&T System V.4 */
224: #define MASK_VERSION_0300 0x00000020 /* Use version 03.00 syntax */
225: #define MASK_NO_UNDERSCORES 0x00000040 /* Don't emit a leading `_' */
226: #define MASK_BIG_PIC 0x00000080 /* PIC with large got-rel's -fPIC */
227: #define MASK_TRAP_LARGE_SHIFT 0x00000100 /* Trap if shift not <= 31 */
228: #define MASK_HANDLE_LARGE_SHIFT 0x00000200 /* Handle shift count >= 32 */
229: #define MASK_CHECK_ZERO_DIV 0x00000400 /* Check for int div. by 0 */
230: #define MASK_USE_DIV 0x00000800 /* No signed div. checks */
231: #define MASK_IDENTIFY_REVISION 0x00001000 /* Emit ident, with GCC rev */
232: #define MASK_WARN_PASS_STRUCT 0x00002000 /* Warn about passed structs */
233: #define MASK_OPTIMIZE_ARG_AREA 0x00004000 /* Save stack space */
234:
235: #define MASK_88000 (MASK_88100 | MASK_88110)
236: #define MASK_EITHER_LARGE_SHIFT (MASK_TRAP_LARGE_SHIFT | \
237: MASK_HANDLE_LARGE_SHIFT)
238:
239: #define TARGET_88100 ((target_flags & MASK_88000) == MASK_88100)
240: #define TARGET_88110 ((target_flags & MASK_88000) == MASK_88110)
241: #define TARGET_88000 ((target_flags & MASK_88000) == MASK_88000)
242:
243: #define TARGET_OCS_DEBUG_INFO (target_flags & MASK_OCS_DEBUG_INFO)
244: #define TARGET_OCS_FRAME_POSITION (target_flags & MASK_OCS_FRAME_POSITION)
245: #define TARGET_SVR4 (target_flags & MASK_SVR4)
246: #define TARGET_VERSION_0300 (target_flags & MASK_VERSION_0300)
247: #define TARGET_NO_UNDERSCORES (target_flags & MASK_NO_UNDERSCORES)
248: #define TARGET_BIG_PIC (target_flags & MASK_BIG_PIC)
249: #define TARGET_TRAP_LARGE_SHIFT (target_flags & MASK_TRAP_LARGE_SHIFT)
250: #define TARGET_HANDLE_LARGE_SHIFT (target_flags & MASK_HANDLE_LARGE_SHIFT)
251: #define TARGET_CHECK_ZERO_DIV (target_flags & MASK_CHECK_ZERO_DIV)
252: #define TARGET_USE_DIV (target_flags & MASK_USE_DIV)
253: #define TARGET_IDENTIFY_REVISION (target_flags & MASK_IDENTIFY_REVISION)
254: #define TARGET_WARN_PASS_STRUCT (target_flags & MASK_WARN_PASS_STRUCT)
255: #define TARGET_OPTIMIZE_ARG_AREA (target_flags & MASK_OPTIMIZE_ARG_AREA)
256:
257: #define TARGET_EITHER_LARGE_SHIFT (target_flags & MASK_EITHER_LARGE_SHIFT)
258:
259: /* Redefined in m88kv3.h,m88kv4.h, and m88kdgux.h. */
260: #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV)
261: #define CPU_DEFAULT MASK_88100
262:
263: #define TARGET_SWITCHES \
264: { \
265: { "88110", MASK_88110 }, \
266: { "88100", MASK_88100 }, \
267: { "88000", MASK_88000 }, \
268: { "ocs-debug-info", MASK_OCS_DEBUG_INFO }, \
269: { "no-ocs-debug-info", -MASK_OCS_DEBUG_INFO }, \
270: { "ocs-frame-position", MASK_OCS_FRAME_POSITION }, \
271: { "no-ocs-frame-position", -MASK_OCS_FRAME_POSITION }, \
272: { "svr4", MASK_SVR4 }, \
273: { "svr3", -MASK_SVR4 }, \
274: { "version-03.00", MASK_VERSION_0300 }, \
275: { "no-underscores", MASK_NO_UNDERSCORES }, \
276: { "big-pic", MASK_BIG_PIC }, \
277: { "trap-large-shift", MASK_TRAP_LARGE_SHIFT }, \
278: { "handle-large-shift", MASK_HANDLE_LARGE_SHIFT }, \
279: { "check-zero-division", MASK_CHECK_ZERO_DIV }, \
280: { "no-check-zero-division", -MASK_CHECK_ZERO_DIV }, \
281: { "use-div-instruction", MASK_USE_DIV }, \
282: { "identify-revision", MASK_IDENTIFY_REVISION }, \
283: { "warn-passed-structs", MASK_WARN_PASS_STRUCT }, \
284: { "optimize-arg-area", MASK_OPTIMIZE_ARG_AREA }, \
285: { "no-optimize-arg-area", -MASK_OPTIMIZE_ARG_AREA }, \
286: SUBTARGET_SWITCHES \
287: /* Default switches */ \
288: { "", TARGET_DEFAULT }, \
289: }
290:
291: /* Redefined in m88kdgux.h. */
292: #define SUBTARGET_SWITCHES
293:
294: /* Macro to define table for command options with values. */
295:
296: #define TARGET_OPTIONS { { "short-data-", &m88k_short_data } }
297:
298: /* Do any checking or such that is needed after processing the -m switches. */
299:
300: #define OVERRIDE_OPTIONS \
301: do { \
302: register int i; \
303: \
304: if ((target_flags & MASK_88000) == 0) \
305: target_flags |= CPU_DEFAULT; \
306: \
1.1.1.2 ! root 307: m88k_cpu = (TARGET_88000 ? CPU_M88000 \
! 308: : (TARGET_88100 ? CPU_M88100 : CPU_M88110)); \
! 309: \
1.1 root 310: if (TARGET_BIG_PIC) \
311: flag_pic = 2; \
312: \
313: if ((target_flags & MASK_EITHER_LARGE_SHIFT) == MASK_EITHER_LARGE_SHIFT) \
314: error ("-mtrap-large-shift and -mhandle-large-shift are incompatible");\
315: \
316: if (VERSION_0300_SYNTAX) \
317: { \
318: for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) \
319: reg_names[i]--; \
320: m88k_pound_sign = "#"; \
321: } \
322: \
323: if (m88k_short_data) \
324: { \
325: char *p = m88k_short_data; \
326: while (*p) \
327: if (*p >= '0' && *p <= '9') \
328: p++; \
329: else \
330: { \
331: error ("Invalid option `-mshort-data-%s'", m88k_short_data); \
332: break; \
333: } \
334: m88k_gp_threshold = atoi (m88k_short_data); \
335: if (flag_pic) \
336: error ("-mshort-data-%s and PIC are incompatible", m88k_short_data); \
337: } \
338: } while (0)
339:
340: /*** Storage Layout ***/
341:
342: /* Sizes in bits of the various types. */
343: #define CHAR_TYPE_SIZE 8
344: #define SHORT_TYPE_SIZE 16
345: #define INT_TYPE_SIZE 32
346: #define LONG_TYPE_SIZE 32
347: #define LONG_LONG_TYPE_SIZE 64
348: #define FLOAT_TYPE_SIZE 32
349: #define DOUBLE_TYPE_SIZE 64
350: #define LONG_DOUBLE_TYPE_SIZE 64
351:
352: /* Define this if most significant bit is lowest numbered
353: in instructions that operate on numbered bit-fields.
354: Somewhat arbitrary. It matches the bit field patterns. */
355: #define BITS_BIG_ENDIAN 1
356:
357: /* Define this if most significant byte of a word is the lowest numbered.
358: That is true on the m88000. */
359: #define BYTES_BIG_ENDIAN 1
360:
361: /* Define this if most significant word of a multiword number is the lowest
362: numbered.
363: For the m88000 we can decide arbitrarily since there are no machine
364: instructions for them. */
365: #define WORDS_BIG_ENDIAN 1
366:
1.1.1.2 ! root 367: /* Number of bits in an addressable storage unit */
1.1 root 368: #define BITS_PER_UNIT 8
369:
370: /* Width in bits of a "word", which is the contents of a machine register.
371: Note that this is not necessarily the width of data type `int';
372: if using 16-bit ints on a 68000, this would still be 32.
373: But on a machine with 16-bit registers, this would be 16. */
374: #define BITS_PER_WORD 32
375:
376: /* Width of a word, in units (bytes). */
377: #define UNITS_PER_WORD 4
378:
379: /* Width in bits of a pointer.
380: See also the macro `Pmode' defined below. */
381: #define POINTER_SIZE 32
382:
383: /* Allocation boundary (in *bits*) for storing arguments in argument list. */
384: #define PARM_BOUNDARY 32
385:
386: /* Largest alignment for stack parameters (if greater than PARM_BOUNDARY). */
387: #define MAX_PARM_BOUNDARY 64
388:
389: /* Boundary (in *bits*) on which stack pointer should be aligned. */
390: #define STACK_BOUNDARY 128
391:
392: /* Allocation boundary (in *bits*) for the code of a function.
393: Pack code tightly when compiling crtstuff.c. */
394: #define FUNCTION_BOUNDARY (flag_inhibit_size_directive ? 32 : 128)
395:
396: /* No data type wants to be aligned rounder than this. */
397: #define BIGGEST_ALIGNMENT 64
398:
399: /* Make strings word-aligned so strcpy from constants will be faster. */
400: #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
401: (TREE_CODE (EXP) == STRING_CST \
402: && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
403:
404: /* Make arrays of chars word-aligned for the same reasons. */
405: #define DATA_ALIGNMENT(TYPE, ALIGN) \
406: (TREE_CODE (TYPE) == ARRAY_TYPE \
407: && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
408: && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
409:
410: /* Alignment of field after `int : 0' in a structure.
411: Ignored with PCC_BITFIELD_TYPE_MATTERS. */
412: /* #define EMPTY_FIELD_BOUNDARY 8 */
413:
414: /* Every structure's size must be a multiple of this. */
415: #define STRUCTURE_SIZE_BOUNDARY 8
416:
1.1.1.2 ! root 417: /* Set this nonzero if move instructions will actually fail to work
1.1 root 418: when given unaligned data. */
1.1.1.2 ! root 419: #define STRICT_ALIGNMENT 1
1.1 root 420:
421: /* A bitfield declared as `int' forces `int' alignment for the struct. */
422: #define PCC_BITFIELD_TYPE_MATTERS 1
423:
424: /* Maximum size (in bits) to use for the largest integral type that
425: replaces a BLKmode type. */
426: /* #define MAX_FIXED_MODE_SIZE 0 */
427:
428: /* Report errors on floating point, if we are given NaN's, or such. Leave
429: the number as is, though, since we output the number in hex, and the
1.1.1.2 ! root 430: assembler won't choke on it. */
1.1 root 431: #define CHECK_FLOAT_VALUE(MODE,VALUE) check_float_value (MODE, VALUE)
432:
433: /* A code distinguishing the floating point format of the target machine. */
434: /* #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT */
435:
436: /*** Register Usage ***/
437:
438: /* Number of actual hardware registers.
439: The hardware registers are assigned numbers for the compiler
440: from 0 to just below FIRST_PSEUDO_REGISTER.
441: All registers that the compiler knows about must be given numbers,
442: even those that are not normally considered general registers.
443:
444: The m88100 has 32 fullword registers.
445:
446: The pseudo argument pointer is said to be register 0. This prohibits
447: the use of r0 as a general register and causes no trouble.
448: Using register 0 is useful, in that it keeps the number of
449: registers down to 32, and GNU can use a long as a bitmask
450: for the registers. */
451: #define FIRST_PSEUDO_REGISTER 32
452:
453: /* 1 for registers that have pervasive standard uses
454: and are not available for the register allocator.
455: Registers 14-25 are expected to be preserved across
456: function calls.
457:
458: On the 88000, these are:
459: Reg 0 = Pseudo argument pointer (hardware fixed to 0).
460: Reg 1 = Subroutine return pointer (hardware).
461: Reg 2-9 = Parameter registers (OCS).
462: Reg 10 = OCS reserved temporary.
463: Reg 11 = Static link if needed [OCS reserved temporary].
464: Reg 12 = Address of structure return (OCS).
465: Reg 13 = OCS reserved temporary.
466: Reg 14-25 = Preserved register set.
467: Reg 26-29 = Reserved by OCS and ABI.
468: Reg 30 = Frame pointer (Common use).
469: Reg 31 = Stack pointer. */
470:
471: #define FIXED_REGISTERS \
472: {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
473: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1}
474:
475: /* 1 for registers not available across function calls.
476: These must include the FIXED_REGISTERS and also any
477: registers that can be used without being saved.
478: The latter must include the registers where values are returned
479: and the register where structure-value addresses are passed.
480: Aside from that, you can include as many other registers as you like. */
481:
482: #define CALL_USED_REGISTERS \
483: {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, \
484: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1}
485:
486: /* Macro to conditionally modify fixed_regs/call_used_regs. */
487: #define CONDITIONAL_REGISTER_USAGE \
488: { \
489: if (flag_pic) \
1.1.1.2 ! root 490: fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
1.1 root 491: }
492:
493: /* These interfaces that don't apply to the m88000. */
494: /* OVERLAPPING_REGNO_P(REGNO) 0 */
495: /* INSN_CLOBBERS_REGNO_P(INSN, REGNO) 0 */
496: /* PRESERVE_DEATH_INFO_REGNO_P(REGNO) 0 */
497:
498: /* Return number of consecutive hard regs needed starting at reg REGNO
499: to hold something of mode MODE.
500: This is ordinarily the length in words of a value of mode MODE
501: but can be less for certain modes in special long registers.
502:
503: On the m88000, ordinary registers hold 32 bits worth;
504: a single floating point register is always enough for
505: anything that can be stored in them at all. */
506: #define HARD_REGNO_NREGS(REGNO, MODE) \
507: ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
508:
509: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
510:
511: For double integers, we never put the value into an odd register so that
512: the operators don't run into the situation where the high part of one of
513: the inputs is the low part of the result register (it's ok if the output
514: registers are the same as the input registers. */
515: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
516: (((MODE) != DImode && (MODE) != DFmode && (MODE) != DCmode) || \
517: ((REGNO) & 1) == 0)
518:
519: /* Value is 1 if it is a good idea to tie two pseudo registers
520: when one has mode MODE1 and one has mode MODE2.
521: If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
522: for any hard reg, then this must be 0 for correct output. */
523: #define MODES_TIEABLE_P(MODE1, MODE2) \
524: (((MODE1) == DFmode || (MODE1) == DCmode || (MODE1) == DImode) \
525: == ((MODE2) == DFmode || (MODE2) == DCmode || (MODE2) == DImode))
526:
527: /* Specify the registers used for certain standard purposes.
528: The values of these macros are register numbers. */
529:
530: /* the m88000 pc isn't overloaded on a register that the compiler knows about. */
531: /* #define PC_REGNUM */
532:
533: /* Register to use for pushing function arguments. */
534: #define STACK_POINTER_REGNUM 31
535:
536: /* Base register for access to local variables of the function. */
537: #define FRAME_POINTER_REGNUM 30
538:
539: /* Base register for access to arguments of the function. */
540: #define ARG_POINTER_REGNUM 0
541:
542: /* Register used in cases where a temporary is known to be safe to use. */
543: #define TEMP_REGNUM 10
544:
545: /* Register in which static-chain is passed to a function. */
546: #define STATIC_CHAIN_REGNUM 11
547:
548: /* Register in which address to store a structure value
549: is passed to a function. */
550: #define STRUCT_VALUE_REGNUM 12
551:
552: /* Register to hold the addressing base for position independent
553: code access to data items. */
554: #define PIC_OFFSET_TABLE_REGNUM 25
555:
556: /* Order in which registers are preferred (most to least). Use temp
557: registers, then param registers top down. Preserve registers are
558: top down to maximize use of double memory ops for register save.
559: The 88open reserved registers (26-29) may commonly be used in most
560: environments with the -fcall-used- or -fcall-saved- options. */
561: #define REG_ALLOC_ORDER \
562: {13, 12, 11, 10, 29, 28, 27, 26, \
563: 1, 9, 8, 7, 6, 5, 4, 3, \
564: 2, 25, 24, 23, 22, 21, 20, 19, \
565: 18, 17, 16, 15, 14, 30, 31, 0}
566:
567: /*** Register Classes ***/
568:
569: /* Define the classes of registers for register constraints in the
570: machine description. Also define ranges of constants.
571:
572: One of the classes must always be named ALL_REGS and include all hard regs.
573: If there is more than one class, another class must be named NO_REGS
574: and contain no registers.
575:
576: The name GENERAL_REGS must be the name of a class (or an alias for
577: another name such as ALL_REGS). This is the class of registers
578: that is allowed by "g" or "r" in a register constraint.
579: Also, registers outside this class are allocated only when
580: instructions express preferences for them.
581:
582: The classes must be numbered in nondecreasing order; that is,
583: a larger-numbered class must never be contained completely
584: in a smaller-numbered class.
585:
586: For any two classes, it is very desirable that there be another
587: class that represents their union. */
588:
589: /* The m88100 hardware has one kind of register. However, we denote
590: the arg pointer as a separate class. */
591:
592: enum reg_class { NO_REGS, AP_REG, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES };
593:
594: #define N_REG_CLASSES (int) LIM_REG_CLASSES
595:
596: /* Give names of register classes as strings for dump file. */
597: #define REG_CLASS_NAMES {"NO_REGS", "AP_REG", "GENERAL_REGS", "ALL_REGS" }
598:
599: /* Define which registers fit in which classes.
600: This is an initializer for a vector of HARD_REG_SET
601: of length N_REG_CLASSES. */
602: #define REG_CLASS_CONTENTS {0, 1, -2, -1}
603:
604: /* The same information, inverted:
605: Return the class number of the smallest class containing
606: reg number REGNO. This could be a conditional expression
607: or could index an array. */
608: #define REGNO_REG_CLASS(REGNO) ((REGNO) ? GENERAL_REGS : AP_REG)
609:
610: /* The class value for index registers, and the one for base regs. */
611: #define BASE_REG_CLASS ALL_REGS
612: #define INDEX_REG_CLASS GENERAL_REGS
613:
614: /* Get reg_class from a letter such as appears in the machine description. */
615:
616: #define REG_CLASS_FROM_LETTER(C) NO_REGS
617:
618: /* Macros to check register numbers against specific register classes.
619: These assume that REGNO is a hard or pseudo reg number.
620: They give nonzero only if REGNO is a hard reg of the suitable class
621: or a pseudo reg currently allocated to a suitable hard reg.
622: Since they use reg_renumber, they are safe only once reg_renumber
623: has been allocated, which happens in local-alloc.c. */
624: #define REGNO_OK_FOR_BASE_P(REGNO) \
625: ((REGNO) < FIRST_PSEUDO_REGISTER || \
626: (unsigned) reg_renumber[REGNO] < FIRST_PSEUDO_REGISTER)
627: #define REGNO_OK_FOR_INDEX_P(REGNO) \
628: (((REGNO) && (REGNO) < FIRST_PSEUDO_REGISTER) || \
629: (unsigned) reg_renumber[REGNO] < FIRST_PSEUDO_REGISTER)
630:
631: /* Given an rtx X being reloaded into a reg required to be
632: in class CLASS, return the class of reg to actually use.
633: In general this is just CLASS; but on some machines
634: in some cases it is preferable to use a more restrictive class.
635: Double constants should be in a register iff they can be made cheaply. */
636: #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
637:
638: /* Return the maximum number of consecutive registers
639: needed to represent mode MODE in a register of class CLASS. */
640: #define CLASS_MAX_NREGS(CLASS, MODE) \
641: ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
642:
643: /* Letters in the range `I' through `P' in a register constraint string can
644: be used to stand for particular ranges of immediate operands. The C
645: expression is true iff C is a known letter and VALUE is appropriate for
646: that letter.
647:
1.1.1.2 ! root 648: For the m88000, the following constants are used:
1.1 root 649: `I' requires a non-negative 16-bit value.
650: `J' requires a non-positive 16-bit value.
651: `K' is unused.
652: `L' requires a constant with only the upper 16-bits set.
653: `M' requires constant values that can be formed with `set'.
654: `N' requires a negative value.
655: `O' requires zero.
656: `P' requires a non-negative value. */
657:
658: /* Quick tests for certain values. */
659: #define SMALL_INT(X) (SMALL_INTVAL (INTVAL (X)))
660: #define SMALL_INTVAL(I) ((unsigned) (I) < 0x10000)
661: #define ADD_INT(X) (ADD_INTVAL (INTVAL (X)))
662: #define ADD_INTVAL(I) ((unsigned) (I) + 0xffff < 0x1ffff)
663: #define POWER_OF_2(I) ((I) && POWER_OF_2_or_0(I))
664: #define POWER_OF_2_or_0(I) (((I) & ((unsigned)(I) - 1)) == 0)
665:
666: #define CONST_OK_FOR_LETTER_P(VALUE, C) \
667: ((C) == 'I' ? SMALL_INTVAL (VALUE) \
668: : (C) == 'J' ? SMALL_INTVAL (-(VALUE)) \
669: : (C) == 'L' ? ((VALUE) & 0xffff) == 0 \
670: : (C) == 'M' ? integer_ok_for_set (VALUE) \
671: : (C) == 'N' ? (VALUE) < 0 \
672: : (C) == 'O' ? (VALUE) == 0 \
673: : (C) == 'P' ? (VALUE) >= 0 \
674: : 0)
675:
676: /* Similar, but for floating constants, and defining letters G and H.
677: Here VALUE is the CONST_DOUBLE rtx itself. For the m88000, the
678: constraints are: `G' requires zero, and `H' requires one or two. */
679: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
680: ((C) == 'G' ? (CONST_DOUBLE_HIGH (VALUE) == 0 \
681: && CONST_DOUBLE_LOW (VALUE) == 0) \
682: : 0)
683:
684: /* Letters in the range `Q' through `U' in a register constraint string
685: may be defined in a machine-dependent fashion to stand for arbitrary
686: operand types.
687:
688: For the m88k, `Q' handles addresses in a call context. */
689:
690: #define EXTRA_CONSTRAINT(OP, C) \
691: ((C) == 'Q' ? symbolic_address_p (OP) : 0)
692:
693: /*** Describing Stack Layout ***/
694:
695: /* Define this if pushing a word on the stack moves the stack pointer
696: to a smaller address. */
697: #define STACK_GROWS_DOWNWARD
698:
699: /* Define this if the addresses of local variable slots are at negative
700: offsets from the frame pointer. */
701: /* #define FRAME_GROWS_DOWNWARD */
702:
703: /* Offset from the frame pointer to the first local variable slot to be
704: allocated. For the m88k, the debugger wants the return address (r1)
705: stored at location r30+4, and the previous frame pointer stored at
706: location r30. */
707: #define STARTING_FRAME_OFFSET 8
708:
709: /* If we generate an insn to push BYTES bytes, this says how many the
710: stack pointer really advances by. The m88k has no push instruction. */
711: /* #define PUSH_ROUNDING(BYTES) */
712:
713: /* If defined, the maximum amount of space required for outgoing arguments
714: will be computed and placed into the variable
715: `current_function_outgoing_args_size'. No space will be pushed
716: onto the stack for each call; instead, the function prologue should
717: increase the stack frame size by this amount. */
718: #define ACCUMULATE_OUTGOING_ARGS
719:
720: /* Offset from the stack pointer register to the first location at which
721: outgoing arguments are placed. Use the default value zero. */
722: /* #define STACK_POINTER_OFFSET 0 */
723:
724: /* Offset of first parameter from the argument pointer register value.
725: Using an argument pointer, this is 0 for the m88k. GCC knows
726: how to eliminate the argument pointer references if necessary. */
727: #define FIRST_PARM_OFFSET(FNDECL) 0
728:
729: /* Define this if functions should assume that stack space has been
730: allocated for arguments even when their values are passed in
731: registers.
732:
733: The value of this macro is the size, in bytes, of the area reserved for
734: arguments passed in registers.
735:
736: This space can either be allocated by the caller or be a part of the
737: machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE'
738: says which. */
739: #define REG_PARM_STACK_SPACE(FNDECL) 32
740:
741: /* Define this macro if REG_PARM_STACK_SPACE is defined but stack
742: parameters don't skip the area specified by REG_PARM_STACK_SPACE.
743: Normally, when a parameter is not passed in registers, it is placed on
744: the stack beyond the REG_PARM_STACK_SPACE area. Defining this macro
745: suppresses this behavior and causes the parameter to be passed on the
746: stack in its natural location. */
747: #define STACK_PARMS_IN_REG_PARM_AREA
748:
749: /* Define this if it is the responsibility of the caller to allocate the
750: area reserved for arguments passed in registers. If
751: `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect of this
752: macro is to determine whether the space is included in
753: `current_function_outgoing_args_size'. */
754: /* #define OUTGOING_REG_PARM_STACK_SPACE */
755:
756: /* Offset from the stack pointer register to an item dynamically allocated
757: on the stack, e.g., by `alloca'.
758:
759: The default value for this macro is `STACK_POINTER_OFFSET' plus the
760: length of the outgoing arguments. The default is correct for most
761: machines. See `function.c' for details. */
762: /* #define STACK_DYNAMIC_OFFSET(FUNDECL) ... */
763:
764: /* Value is the number of bytes of arguments automatically
765: popped when returning from a subroutine call.
766: FUNTYPE is the data type of the function (as a tree),
767: or for a library call it is an identifier node for the subroutine name.
768: SIZE is the number of bytes of arguments passed on the stack. */
769: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0
770:
771: /* Define how to find the value returned by a function.
772: VALTYPE is the data type of the value (as a tree).
773: If the precise function being called is known, FUNC is its FUNCTION_DECL;
774: otherwise, FUNC is 0. */
775: #define FUNCTION_VALUE(VALTYPE, FUNC) \
776: gen_rtx (REG, \
777: TYPE_MODE (VALTYPE) == BLKmode ? SImode : TYPE_MODE (VALTYPE), \
778: 2)
779:
780: /* Define this if it differs from FUNCTION_VALUE. */
781: /* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) ... */
782:
783: /* Disable the promotion of some structures and unions to registers. */
784: #define RETURN_IN_MEMORY(TYPE) \
785: ((TREE_CODE (TYPE) == RECORD_TYPE || TREE_CODE(TYPE) == UNION_TYPE) \
786: && !(TYPE_MODE (TYPE) == SImode \
787: || (TYPE_MODE (TYPE) == BLKmode \
788: && TYPE_ALIGN (TYPE) == BITS_PER_WORD \
789: && int_size_in_bytes (TYPE) == UNITS_PER_WORD)))
790:
791: /* Define how to find the value returned by a library function
792: assuming the value has mode MODE. */
793: #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 2)
794:
795: /* True if N is a possible register number for a function value
796: as seen by the caller. */
797: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2)
798:
799: /* Determine whether a function argument is passed in a register, and
800: which register. See m88k.c. */
801: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
802: m88k_function_arg (CUM, MODE, TYPE, NAMED)
803:
804: /* Define this if it differs from FUNCTION_ARG. */
805: /* #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) ... */
806:
807: /* A C expression for the number of words, at the beginning of an
808: argument, must be put in registers. The value must be zero for
809: arguments that are passed entirely in registers or that are entirely
810: pushed on the stack. */
811: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0)
812:
813: /* A C expression that indicates when an argument must be passed by
814: reference. If nonzero for an argument, a copy of that argument is
815: made in memory and a pointer to the argument is passed instead of the
816: argument itself. The pointer is passed in whatever way is appropriate
817: for passing a pointer to that type. */
818: #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) (0)
819:
820: /* A C type for declaring a variable that is used as the first argument
821: of `FUNCTION_ARG' and other related values. It suffices to count
822: the number of words of argument so far. */
823: #define CUMULATIVE_ARGS int
824:
825: /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to a
826: function whose data type is FNTYPE. For a library call, FNTYPE is 0. */
827: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0)
828:
829: /* A C statement (sans semicolon) to update the summarizer variable
830: CUM to advance past an argument in the argument list. The values
831: MODE, TYPE and NAMED describe that argument. Once this is done,
832: the variable CUM is suitable for analyzing the *following* argument
833: with `FUNCTION_ARG', etc. (TYPE is null for libcalls where that
834: information may not be available.) */
835: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
836: do { \
837: enum machine_mode __mode = (TYPE) ? TYPE_MODE (TYPE) : (MODE); \
838: if ((CUM & 1) \
839: && (__mode == DImode || __mode == DFmode \
840: || ((TYPE) && TYPE_ALIGN (TYPE) > BITS_PER_WORD))) \
841: CUM++; \
842: CUM += (((__mode != BLKmode) \
843: ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE)) \
844: + 3) / 4; \
845: } while (0)
846:
847: /* True if N is a possible register number for function argument passing.
848: On the m88000, these are registers 2 through 9. */
849: #define FUNCTION_ARG_REGNO_P(N) ((N) <= 9 && (N) >= 2)
850:
851: /* A C expression which determines whether, and in which direction,
852: to pad out an argument with extra space. The value should be of
853: type `enum direction': either `upward' to pad above the argument,
854: `downward' to pad below, or `none' to inhibit padding.
855:
856: This macro does not control the *amount* of padding; that is always
857: just enough to reach the next multiple of `FUNCTION_ARG_BOUNDARY'. */
858: #define FUNCTION_ARG_PADDING(MODE, TYPE) \
859: ((MODE) == BLKmode \
860: || ((TYPE) && (TREE_CODE (TYPE) == RECORD_TYPE \
861: || TREE_CODE (TYPE) == UNION_TYPE)) \
862: ? upward : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY ? downward : none)
863:
864: /* If defined, a C expression that gives the alignment boundary, in bits,
865: of an argument with the specified mode and type. If it is not defined,
866: `PARM_BOUNDARY' is used for all arguments. */
867: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
868: (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_SIZE (MODE)) <= PARM_BOUNDARY \
869: ? PARM_BOUNDARY : 2 * PARM_BOUNDARY)
870:
871: /* Generate necessary RTL for __builtin_saveregs().
872: ARGLIST is the argument list; see expr.c. */
873: #define EXPAND_BUILTIN_SAVEREGS(ARGLIST) m88k_builtin_saveregs (ARGLIST)
874:
875: /* Generate the assembly code for function entry. */
876: #define FUNCTION_PROLOGUE(FILE, SIZE) m88k_output_prologue(FILE, SIZE)
877:
878: /* Output assembler code to FILE to increment profiler label # LABELNO
879: for profiling a function entry. Redefined in m88kv3.h, m88kv4.h and
880: m88kdgux.h. */
881: #define FUNCTION_PROFILER(FILE, LABELNO) \
882: output_function_profiler (FILE, LABELNO, "mcount", 1)
883:
884: /* Output assembler code to FILE to initialize basic-block profiling for
885: the current module. LABELNO is unique to each instance. */
886: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \
887: output_function_block_profiler (FILE, LABELNO)
888:
889: /* Output assembler code to FILE to increment the count associated with
890: the basic block number BLOCKNO. */
891: #define BLOCK_PROFILER(FILE, BLOCKNO) output_block_profiler (FILE, BLOCKNO)
892:
893: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
894: the stack pointer does not matter. The value is tested only in
895: functions that have frame pointers.
896: No definition is equivalent to always zero. */
897: #define EXIT_IGNORE_STACK (1)
898:
899: /* Generate the assembly code for function exit. */
900: #define FUNCTION_EPILOGUE(FILE, SIZE) m88k_output_epilogue(FILE, SIZE)
901:
902: /* Define the number of delay slots needed for the function epilogue.
903: These are used for scheduling the function epilogue and depend on
904: what the epilogue looks like. */
905: #define DELAY_SLOTS_FOR_EPILOGUE delay_slots_for_epilogue ()
906:
907: /* Define whether INSN can be placed in delay slot N for the epilogue. */
908: #define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN,N) \
909: eligible_for_epilogue_delay (INSN)
910:
911: /* Value should be nonzero if functions must have frame pointers.
912: Zero means the frame pointer need not be set up (and parms
913: may be accessed via the stack pointer) in functions that seem suitable.
914: This is computed in `reload', in reload1.c. */
915: #define FRAME_POINTER_REQUIRED \
916: (frame_pointer_needed \
917: || (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION))
918:
919: /* Definitions for register eliminations.
920:
921: We have two registers that can be eliminated on the m88k. First, the
922: frame pointer register can often be eliminated in favor of the stack
923: pointer register. Secondly, the argument pointer register can always be
924: eliminated; it is replaced with either the stack or frame pointer. */
925:
926: /* This is an array of structures. Each structure initializes one pair
927: of eliminable registers. The "from" register number is given first,
928: followed by "to". Eliminations of the same "from" register are listed
929: in order of preference. */
930: #define ELIMINABLE_REGS \
931: {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
932: { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
933: { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
934:
935: /* Given FROM and TO register numbers, say whether this elimination
936: is allowed. */
937: #define CAN_ELIMINATE(FROM, TO) \
938: (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
939:
940: /* Define the offset between two registers, one to be eliminated, and the other
941: its replacement, at the start of a routine. */
942: #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
943: { m88k_layout_frame (); \
944: if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
945: (OFFSET) = m88k_fp_offset; \
946: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \
947: (OFFSET) = m88k_stack_size - m88k_fp_offset; \
948: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \
949: (OFFSET) = m88k_stack_size; \
950: else \
951: abort (); \
952: }
953:
954: /*** Trampolines for Nested Functions ***/
955:
956: /* Output assembler code for a block containing the constant parts
957: of a trampoline, leaving space for the variable parts.
958:
959: This block is placed on the stack and filled in. It is aligned
960: 0 mod 128 and those portions that are executed are constant.
961: This should work for instruction caches that have cache lines up
962: to the aligned amount (128 is arbitrary), provided no other code
963: producer is attempting to play the same game. This of course is
964: in violation of any number of 88open standards. */
965:
966: #define TRAMPOLINE_TEMPLATE(FILE) \
967: { \
968: /* Save the return address (r1) in the static chain reg (r11). */ \
969: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[11], reg_names[1]); \
970: /* Locate this block; transfer to the next instruction. */ \
971: fprintf (FILE, "\tbsr\t 1\n"); \
972: /* Save r10; use it as the relative pointer; restore r1. */ \
973: fprintf (FILE, "\tst\t %s,%s,24\n", reg_names[10], reg_names[1]); \
974: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[10], reg_names[1]); \
975: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[1], reg_names[11]); \
976: /* Load the function's address and go there. */ \
977: fprintf (FILE, "\tld\t %s,%s,32\n", reg_names[11], reg_names[10]); \
978: fprintf (FILE, "\tjmp.n\t %s\n", reg_names[11]); \
979: /* Restore r10 and load the static chain register. */ \
980: fprintf (FILE, "\tld.d\t %s,%s,24\n", reg_names[10], reg_names[10]); \
981: /* Storage: r10 save area, static chain, function address. */ \
982: ASM_OUTPUT_INT (FILE, const0_rtx); \
983: ASM_OUTPUT_INT (FILE, const0_rtx); \
984: ASM_OUTPUT_INT (FILE, const0_rtx); \
985: }
986:
987: /* Length in units of the trampoline for entering a nested function.
988: This is really two components. The first 32 bytes are fixed and
989: must be copied; the last 12 bytes are just storage that's filled
990: in later. So for allocation purposes, it's 32+12 bytes, but for
1.1.1.2 ! root 991: initialization purposes, it's 32 bytes. */
1.1 root 992:
993: #define TRAMPOLINE_SIZE (32+12)
994:
995: /* Alignment required for a trampoline. 128 is used to find the
996: beginning of a line in the instruction cache and to allow for
997: instruction cache lines of up to 128 bytes. */
998:
999: #define TRAMPOLINE_ALIGNMENT 128
1000:
1001: /* Emit RTL insns to initialize the variable parts of a trampoline.
1002: FNADDR is an RTX for the address of the function's pure code.
1003: CXT is an RTX for the static chain value for the function. */
1004:
1005: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1006: { \
1007: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 40)), FNADDR); \
1008: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 36)), CXT); \
1009: }
1010:
1011: /*** Library Subroutine Names ***/
1012:
1013: /* Define this macro if GNU CC should generate calls to the System V
1014: (and ANSI C) library functions `memcpy' and `memset' rather than
1015: the BSD functions `bcopy' and `bzero'. */
1016: #define TARGET_MEM_FUNCTIONS
1017:
1018: /*** Addressing Modes ***/
1019:
1020: /* #define HAVE_POST_INCREMENT */
1021: /* #define HAVE_POST_DECREMENT */
1022:
1023: /* #define HAVE_PRE_DECREMENT */
1024: /* #define HAVE_PRE_INCREMENT */
1025:
1026: /* Recognize any constant value that is a valid address. */
1027: #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X))
1028:
1029: /* Maximum number of registers that can appear in a valid memory address. */
1030: #define MAX_REGS_PER_ADDRESS 2
1031:
1032: /* The condition for memory shift insns. */
1033: #define SCALED_ADDRESS_P(ADDR) \
1034: (GET_CODE (ADDR) == PLUS \
1035: && (GET_CODE (XEXP (ADDR, 0)) == MULT \
1036: || GET_CODE (XEXP (ADDR, 1)) == MULT))
1037:
1038: /* Can the reference to X be made short? */
1039: #define SHORT_ADDRESS_P(X,TEMP) \
1040: ((TEMP) = (GET_CODE (X) == CONST ? get_related_value (X) : X), \
1041: ((TEMP) && GET_CODE (TEMP) == SYMBOL_REF && SYMBOL_REF_FLAG (TEMP)))
1042:
1043: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
1044: that is a valid memory address for an instruction.
1045: The MODE argument is the machine mode for the MEM expression
1046: that wants to use this address.
1047:
1048: On the m88000, a legitimate address has the form REG, REG+REG,
1049: REG+SMALLINT, REG+(REG*modesize) (REG[REG]), or SMALLINT.
1050:
1051: The register elimination process should deal with the argument
1052: pointer and frame pointer changing to REG+SMALLINT. */
1053:
1054: #define LEGITIMATE_INDEX_P(X, MODE) \
1055: ((GET_CODE (X) == CONST_INT \
1056: && SMALL_INT (X)) \
1057: || (REG_P (X) \
1058: && REG_OK_FOR_INDEX_P (X)) \
1059: || (GET_CODE (X) == MULT \
1060: && REG_P (XEXP (X, 0)) \
1061: && REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
1062: && GET_CODE (XEXP (X, 1)) == CONST_INT \
1063: && INTVAL (XEXP (X, 1)) == GET_MODE_SIZE (MODE)))
1064:
1065: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1066: { \
1067: register rtx _x; \
1068: if (REG_P (X)) \
1069: { \
1070: if (REG_OK_FOR_BASE_P (X)) \
1071: goto ADDR; \
1072: } \
1073: else if (GET_CODE (X) == PLUS) \
1074: { \
1075: register rtx _x0 = XEXP (X, 0); \
1076: register rtx _x1 = XEXP (X, 1); \
1077: if ((flag_pic \
1078: && _x0 == pic_offset_table_rtx \
1079: && (flag_pic == 2 \
1080: ? REG_P (_x1) \
1081: : (GET_CODE (_x1) == SYMBOL_REF \
1082: || GET_CODE (_x1) == LABEL_REF))) \
1083: || (REG_P (_x0) \
1084: && (REG_OK_FOR_BASE_P (_x0) \
1085: && LEGITIMATE_INDEX_P (_x1, MODE))) \
1086: || (REG_P (_x1) \
1087: && (REG_OK_FOR_BASE_P (_x1) \
1088: && LEGITIMATE_INDEX_P (_x0, MODE)))) \
1089: goto ADDR; \
1090: } \
1091: else if (GET_CODE (X) == LO_SUM) \
1092: { \
1093: register rtx _x0 = XEXP (X, 0); \
1094: register rtx _x1 = XEXP (X, 1); \
1095: if (((REG_P (_x0) \
1096: && REG_OK_FOR_BASE_P (_x0)) \
1097: || (GET_CODE (_x0) == SUBREG \
1098: && REG_P (SUBREG_REG (_x0)) \
1099: && REG_OK_FOR_BASE_P (SUBREG_REG (_x0)))) \
1100: && CONSTANT_P (_x1)) \
1101: goto ADDR; \
1102: } \
1103: else if (GET_CODE (X) == CONST_INT \
1104: && SMALL_INT (X)) \
1105: goto ADDR; \
1106: else if (SHORT_ADDRESS_P (X, _x)) \
1107: goto ADDR; \
1108: }
1109:
1110: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
1111: and check its validity for a certain class.
1112: We have two alternate definitions for each of them.
1113: The usual definition accepts all pseudo regs; the other rejects
1114: them unless they have been allocated suitable hard regs.
1115: The symbol REG_OK_STRICT causes the latter definition to be used.
1116:
1117: Most source files want to accept pseudo regs in the hope that
1118: they will get allocated to the class that the insn wants them to be in.
1119: Source files for reload pass need to be strict.
1120: After reload, it makes no difference, since pseudo regs have
1121: been eliminated by then. */
1122:
1123: #ifndef REG_OK_STRICT
1124:
1125: /* Nonzero if X is a hard reg that can be used as an index
1126: or if it is a pseudo reg. Not the argument pointer. */
1127: #define REG_OK_FOR_INDEX_P(X) (X)
1128: /* Nonzero if X is a hard reg that can be used as a base reg
1129: or if it is a pseudo reg. */
1130: #define REG_OK_FOR_BASE_P(X) (1)
1131:
1132: #else
1133:
1134: /* Nonzero if X is a hard reg that can be used as an index. */
1135: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1136: /* Nonzero if X is a hard reg that can be used as a base reg. */
1137: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1138:
1139: #endif
1140:
1141: /* Try machine-dependent ways of modifying an illegitimate address
1142: to be legitimate. If we find one, return the new, valid address.
1143: This macro is used in only one place: `memory_address' in explow.c.
1144:
1145: OLDX is the address as it was before break_out_memory_refs was called.
1146: In some cases it is useful to look at this to decide what needs to be done.
1147:
1148: MODE and WIN are passed so that this macro can use
1149: GO_IF_LEGITIMATE_ADDRESS.
1150:
1151: It is always safe for this macro to do nothing. It exists to recognize
1152: opportunities to optimize the output. */
1153:
1154: /* On the m88000, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */
1155:
1156: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
1157: { \
1158: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \
1159: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
1160: copy_to_mode_reg (SImode, XEXP (X, 1))); \
1161: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
1162: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
1163: copy_to_mode_reg (SImode, XEXP (X, 0))); \
1164: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \
1165: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \
1166: force_operand (XEXP (X, 0), 0)); \
1167: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \
1168: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \
1169: force_operand (XEXP (X, 1), 0)); \
1170: if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
1171: || GET_CODE (X) == LABEL_REF) \
1172: (X) = legitimize_address (flag_pic, X, gen_reg_rtx (Pmode)); \
1173: if (memory_address_p (MODE, X)) \
1174: goto WIN; }
1175:
1176: /* Go to LABEL if ADDR (a legitimate address expression)
1177: has an effect that depends on the machine mode it is used for.
1178: On the the m88000 this is never true. */
1179:
1180: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
1181:
1182: /* Nonzero if the constant value X is a legitimate general operand.
1183: It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
1184: #define LEGITIMATE_CONSTANT_P(X) (1)
1185:
1186: /*** Condition Code Information ***/
1187:
1188: /* C code for a data type which is used for declaring the `mdep'
1189: component of `cc_status'. It defaults to `int'. */
1190: /* #define CC_STATUS_MDEP int */
1191:
1192: /* A C expression to initialize the `mdep' field to "empty". */
1193: /* #define CC_STATUS_MDEP_INIT (cc_status.mdep = 0) */
1194:
1195: /* Macro to zap the normal portions of CC_STATUS, but leave the
1196: machine dependent parts (ie, literal synthesis) alone. */
1197: /* #define CC_STATUS_INIT_NO_MDEP \
1198: (cc_status.flags = 0, cc_status.value1 = 0, cc_status.value2 = 0) */
1199:
1200: /* When using a register to hold the condition codes, the cc_status
1201: mechanism cannot be used. */
1202: #define NOTICE_UPDATE_CC(EXP, INSN) (0)
1203:
1204: /*** Miscellaneous Parameters ***/
1205:
1206: /* Define the codes that are matched by predicates in m88k.c. */
1207: #define PREDICATE_CODES \
1208: {"move_operand", {SUBREG, REG, CONST_INT, LO_SUM, MEM}}, \
1209: {"call_address_operand", {SUBREG, REG, SYMBOL_REF, LABEL_REF, CONST}}, \
1210: {"arith_operand", {SUBREG, REG, CONST_INT}}, \
1211: {"arith5_operand", {SUBREG, REG, CONST_INT}}, \
1212: {"arith32_operand", {SUBREG, REG, CONST_INT}}, \
1213: {"arith64_operand", {SUBREG, REG, CONST_INT}}, \
1214: {"int5_operand", {CONST_INT}}, \
1215: {"int32_operand", {CONST_INT}}, \
1216: {"add_operand", {SUBREG, REG, CONST_INT}}, \
1217: {"reg_or_bbx_mask_operand", {SUBREG, REG, CONST_INT}}, \
1218: {"real_or_0_operand", {SUBREG, REG, CONST_DOUBLE}}, \
1219: {"relop", {EQ, NE, LT, LE, GE, GT, LTU, LEU, GEU, GTU}}, \
1220: {"relop_no_unsigned", {EQ, NE, LT, LE, GE, GT}}, \
1221: {"equality_op", {EQ, NE}}, \
1222: {"pc_or_label_ref", {PC, LABEL_REF}},
1223:
1224: /* An alias for a machine mode name. This is the machine mode that
1225: elements of a jump-table should have. */
1226: #define CASE_VECTOR_MODE SImode
1227:
1228: /* Define this macro if jump-tables should contain relative addresses. */
1229: #define CASE_VECTOR_PC_RELATIVE
1230:
1231: /* Define this if control falls through a `case' insn when the index
1232: value is out of range. This means the specified default-label is
1233: actually ignored by the `case' insn proper. */
1234: /* #define CASE_DROPS_THROUGH */
1235:
1236: /* Specify the tree operation to be used to convert reals to integers. */
1237: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
1238:
1239: /* This is the kind of divide that is easiest to do in the general case. */
1240: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
1241:
1242: /* Define this as 1 if `char' should by default be signed; else as 0. */
1243: #define DEFAULT_SIGNED_CHAR 1
1244:
1245: /* The 88open ABI says size_t is unsigned int. */
1246: #define SIZE_TYPE "unsigned int"
1247:
1248: /* Allow and ignore #sccs directives */
1249: #define SCCS_DIRECTIVE
1250:
1251: /* Code to handle #pragma directives. The interface is a bit messy,
1252: but there's no simpler way to do this while still using yylex. */
1253: #define HANDLE_PRAGMA(FILE) \
1254: do { \
1255: while (c == ' ' || c == '\t') \
1256: c = getc (FILE); \
1257: if (c == '\n' || c == EOF) \
1258: { \
1259: m88k_handle_pragma_token (0, 0); \
1260: return c; \
1261: } \
1262: ungetc (c, FILE); \
1263: switch (yylex ()) \
1264: { \
1265: case IDENTIFIER: \
1266: case TYPENAME: \
1267: case STRING: \
1268: case CONSTANT: \
1269: m88k_handle_pragma_token (token_buffer, yylval.ttype); \
1270: break; \
1271: default: \
1272: m88k_handle_pragma_token (token_buffer, 0); \
1273: } \
1274: if (nextchar >= 0) \
1275: c = nextchar, nextchar = -1; \
1276: else \
1277: c = getc (FILE); \
1278: } while (1)
1279:
1280: /* Tell when to handle #pragma weak. This is only done for V.4. */
1281: #define HANDLE_PRAGMA_WEAK TARGET_SVR4
1282:
1283: /* Max number of bytes we can move from memory to memory
1284: in one reasonably fast instruction. */
1285: #define MOVE_MAX 64
1286:
1287: /* Define if normal loads of shorter-than-word items from memory clears
1288: the rest of the bigs in the register. */
1289: #define BYTE_LOADS_ZERO_EXTEND
1290:
1291: /* Zero if access to memory by bytes is faster. */
1292: #define SLOW_BYTE_ACCESS 1
1293:
1294: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1295: is done just by pretending it is already truncated. */
1296: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1297:
1298: /* Define this if addresses of constant functions
1299: shouldn't be put through pseudo regs where they can be cse'd.
1300: Desirable on machines where ordinary constants are expensive
1301: but a CALL with constant address is cheap. */
1302: #define NO_FUNCTION_CSE
1303:
1304: /* Define this macro if an argument declared as `char' or
1305: `short' in a prototype should actually be passed as an
1306: `int'. In addition to avoiding errors in certain cases of
1307: mismatch, it also makes for better code on certain machines. */
1308: #define PROMOTE_PROTOTYPES
1309:
1310: /* Define this macro if a float function always returns float
1311: (even in traditional mode). Redefined in m88kluna.h. */
1312: #define TRADITIONAL_RETURN_FLOAT
1313:
1314: /* We assume that the store-condition-codes instructions store 0 for false
1315: and some other value for true. This is the value stored for true. */
1316: #define STORE_FLAG_VALUE -1
1317:
1318: /* Specify the machine mode that pointers have.
1319: After generation of rtl, the compiler makes no further distinction
1320: between pointers and any other objects of this machine mode. */
1321: #define Pmode SImode
1322:
1323: /* A function address in a call instruction
1324: is a word address (for indexing purposes)
1325: so give the MEM rtx word mode. */
1326: #define FUNCTION_MODE SImode
1327:
1328: /* Compute the cost of computing a constant rtl expression RTX
1329: whose rtx-code is CODE. The body of this macro is a portion
1330: of a switch statement. If the code is computed here,
1331: return it with a return statement. Otherwise, break from the switch.
1332:
1333: We assume that any 16 bit integer can easily be recreated, so we
1334: indicate 0 cost, in an attempt to get GCC not to optimize things
1335: like comparison against a constant.
1336:
1337: The cost of CONST_DOUBLE is zero (if it can be placed in an insn, it
1338: is as good as a register; since it can't be placed in any insn, it
1339: won't do anything in cse, but it will cause expand_binop to pass the
1340: constant to the define_expands). */
1341: #define CONST_COSTS(RTX,CODE) \
1342: case CONST_INT: \
1343: if (SMALL_INT (RTX)) \
1344: return 0; \
1345: else if (SMALL_INTVAL (- INTVAL (RTX))) \
1346: return 2; \
1347: else if (classify_integer (SImode, INTVAL (RTX)) != m88k_oru_or) \
1348: return 4; \
1349: return 7; \
1350: case HIGH: \
1351: return 2; \
1352: case CONST: \
1353: case LABEL_REF: \
1354: case SYMBOL_REF: \
1355: if (flag_pic) \
1356: return (flag_pic == 2) ? 11 : 8; \
1357: return 5; \
1358: case CONST_DOUBLE: \
1359: return 0;
1360:
1361: /* Provide the costs of an addressing mode that contains ADDR.
1.1.1.2 ! root 1362: If ADDR is not a valid address, its cost is irrelevant.
1.1 root 1363: REG+REG is made slightly more expensive because it might keep
1364: a register live for longer than we might like. */
1365: #define ADDRESS_COST(ADDR) \
1366: (GET_CODE (ADDR) == REG ? 1 : \
1367: GET_CODE (ADDR) == LO_SUM ? 1 : \
1368: GET_CODE (ADDR) == HIGH ? 2 : \
1369: GET_CODE (ADDR) == MULT ? 1 : \
1370: GET_CODE (ADDR) != PLUS ? 4 : \
1371: (REG_P (XEXP (ADDR, 0)) && REG_P (XEXP (ADDR, 1))) ? 2 : 1)
1372:
1373: /* Provide the costs of a rtl expression. This is in the body of a
1374: switch on CODE. */
1375: #define RTX_COSTS(X,CODE) \
1376: case MEM: \
1377: return COSTS_N_INSNS (2); \
1378: case MULT: \
1379: return COSTS_N_INSNS (3); \
1380: case DIV: \
1381: case UDIV: \
1382: case MOD: \
1383: case UMOD: \
1384: return COSTS_N_INSNS (38);
1385:
1386: /* A C expressions returning the cost of moving data of MODE from a register
1387: to or from memory. This is more costly than between registers. */
1388: #define MEMORY_MOVE_COST(MODE) 4
1389:
1390: /* Provide the cost of a branch. Exact meaning under development. */
1391: #define BRANCH_COST (TARGET_88100 ? 1 : 2)
1392:
1393: /* Define this to be nonzero if the character `$' should be allowed
1394: by default in identifier names. */
1395: #define DOLLARS_IN_IDENTIFIERS 1
1396:
1397: /* Do not break .stabs pseudos into continuations. */
1398: #define DBX_CONTIN_LENGTH 0
1399:
1400: /*** Output of Assembler Code ***/
1401:
1402: /* Control the assembler format that we output. */
1403:
1404: /* Which assembler syntax. Redefined in m88kdgux.h. */
1405: #define VERSION_0300_SYNTAX TARGET_SVR4
1406:
1407: /* Allow pseudo-ops to be overridden. Override these in svr[34].h. */
1408: #undef INT_ASM_OP
1409: #undef ASCII_DATA_ASM_OP
1410: #undef INIT_SECTION_ASM_OP
1411: #undef CONST_SECTION_ASM_OP
1412: #undef CTORS_SECTION_ASM_OP
1413: #undef DTORS_SECTION_ASM_OP
1414: #undef INIT_SECTION_ASM_OP
1415: #undef FINI_SECTION_ASM_OP
1416: #undef TYPE_ASM_OP
1417: #undef SIZE_ASM_OP
1418:
1419: /* These are used in varasm.c as well. */
1.1.1.2 ! root 1420: #define TEXT_SECTION_ASM_OP "text"
! 1421: #define DATA_SECTION_ASM_OP "data"
1.1 root 1422:
1423: /* Other sections. */
1424: #define CONST_SECTION_ASM_OP (VERSION_0300_SYNTAX \
1.1.1.2 ! root 1425: ? "section\t .rodata,\"a\"" \
! 1426: : "section\t .rodata,\"x\"")
1.1 root 1427: #define TDESC_SECTION_ASM_OP (VERSION_0300_SYNTAX \
1.1.1.2 ! root 1428: ? "section\t .tdesc,\"a\"" \
! 1429: : "section\t .tdesc,\"x\"")
1.1 root 1430:
1431: /* These must be constant strings for crtstuff.c. */
1.1.1.2 ! root 1432: #define CTORS_SECTION_ASM_OP "section\t .ctors,\"d\""
! 1433: #define DTORS_SECTION_ASM_OP "section\t .dtors,\"d\""
! 1434: #define INIT_SECTION_ASM_OP "section\t .init,\"x\""
! 1435: #define FINI_SECTION_ASM_OP "section\t .fini,\"x\""
1.1 root 1436:
1437: /* These are pretty much common to all assemblers. */
1.1.1.2 ! root 1438: #define IDENT_ASM_OP "ident"
! 1439: #define FILE_ASM_OP "file"
! 1440: #define SECTION_ASM_OP "section"
! 1441: #define DEF_ASM_OP "def"
! 1442: #define GLOBAL_ASM_OP "global"
! 1443: #define ALIGN_ASM_OP "align"
! 1444: #define SKIP_ASM_OP "zero"
! 1445: #define COMMON_ASM_OP "comm"
! 1446: #define LOCAL_ASM_OP "bss"
! 1447: #define FLOAT_ASM_OP "float"
! 1448: #define DOUBLE_ASM_OP "double"
! 1449: #define INT_ASM_OP "word"
1.1 root 1450: #define ASM_LONG INT_ASM_OP
1.1.1.2 ! root 1451: #define SHORT_ASM_OP "half"
! 1452: #define CHAR_ASM_OP "byte"
! 1453: #define ASCII_DATA_ASM_OP "string"
1.1 root 1454:
1455: /* These are particular to the global pool optimization. */
1.1.1.2 ! root 1456: #define SBSS_ASM_OP "sbss"
! 1457: #define SCOMM_ASM_OP "scomm"
! 1458: #define SDATA_SECTION_ASM_OP "sdata"
1.1 root 1459:
1460: /* These are specific to PIC. */
1.1.1.2 ! root 1461: #define TYPE_ASM_OP "type"
! 1462: #define SIZE_ASM_OP "size"
! 1463: #define WEAK_ASM_OP "weak"
1.1 root 1464: #ifndef AS_BUG_POUND_TYPE /* Faulty assemblers require @ rather than #. */
1465: #undef TYPE_OPERAND_FMT
1466: #define TYPE_OPERAND_FMT "#%s"
1467: #endif
1468:
1469: /* These are specific to version 03.00 assembler syntax. */
1.1.1.2 ! root 1470: #define INTERNAL_ASM_OP "local"
! 1471: #define VERSION_ASM_OP "version"
1.1 root 1472: #define ASM_DWARF_POP_SECTION(FILE) fputs ("\tprevious\n", FILE)
1.1.1.2 ! root 1473: #define UNALIGNED_SHORT_ASM_OP "uahalf"
! 1474: #define UNALIGNED_INT_ASM_OP "uaword"
1.1 root 1475:
1476: /* Output any initial stuff to the assembly file. Always put out
1477: a file directive, even if not debugging.
1478:
1479: Immediately after putting out the file, put out a "sem.<value>"
1480: declaration. This should be harmless on other systems, and
1.1.1.2 ! root 1481: is used in DG/UX by the debuggers to supplement COFF. The
1.1 root 1482: fields in the integer value are as follows:
1483:
1484: Bits Value Meaning
1485: ---- ----- -------
1486: 0-1 0 No information about stack locations
1487: 1 Auto/param locations are based on r30
1488: 2 Auto/param locations are based on CFA
1489:
1490: 3-2 0 No information on dimension order
1491: 1 Array dims in sym table matches source language
1492: 2 Array dims in sym table is in reverse order
1493:
1494: 5-4 0 No information about the case of global names
1495: 1 Global names appear in the symbol table as in the source
1496: 2 Global names have been converted to lower case
1497: 3 Global names have been converted to upper case. */
1498:
1499: #ifdef SDB_DEBUGGING_INFO
1500: #define ASM_COFFSEM(FILE) \
1501: if (write_symbols == SDB_DEBUG) \
1502: { \
1503: fprintf (FILE, "\nsem.%x:\t\t; %s\n", \
1504: (((TARGET_OCS_FRAME_POSITION) ? 2 : 1) << 0) + (1 << 2) + (1 << 4),\
1505: (TARGET_OCS_FRAME_POSITION) \
1506: ? "frame is CFA, normal array dims, case unchanged" \
1507: : "frame is r30, normal array dims, case unchanged"); \
1508: }
1509: #else
1510: #define ASM_COFFSEM(FILE)
1511: #endif
1512:
1513: /* Output the first line of the assembly file. Redefined in m88kdgux.h. */
1514:
1515: #define ASM_FIRST_LINE(FILE) \
1516: do { \
1517: if (VERSION_0300_SYNTAX) \
1.1.1.2 ! root 1518: fprintf (FILE, "\t%s\t \"03.00\"\n", VERSION_ASM_OP); \
1.1 root 1519: } while (0)
1520:
1521: /* Override svr[34].h. */
1522: #undef ASM_FILE_START
1523: #define ASM_FILE_START(FILE) \
1524: output_file_start (FILE, f_options, sizeof f_options / sizeof f_options[0], \
1525: W_options, sizeof W_options / sizeof W_options[0])
1526:
1527: #undef ASM_FILE_END
1528:
1529: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) \
1.1.1.2 ! root 1530: fprintf (FILE, "\t%s\t \"%s\"\n", FILE_ASM_OP, NAME)
1.1 root 1531:
1532: #ifdef SDB_DEBUGGING_INFO
1533: #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \
1534: if (m88k_prologue_done) \
1535: fprintf (FILE, "\n\tln\t %d\t\t\t\t; Real source line %d\n",\
1536: LINE - sdb_begin_function_line, LINE)
1537: #endif
1538:
1539: /* Code to handle #ident directives. Override svr[34].h definition. */
1540: #undef ASM_OUTPUT_IDENT
1541: #ifdef DBX_DEBUGGING_INFO
1542: #define ASM_OUTPUT_IDENT(FILE, NAME)
1543: #else
1544: #define ASM_OUTPUT_IDENT(FILE, NAME) \
1.1.1.2 ! root 1545: fprintf (FILE, "\t%s\t \"%s\"\n", IDENT_ASM_OP, NAME)
1.1 root 1546: #endif
1547:
1548: /* Output to assembler file text saying following lines
1549: may contain character constants, extra white space, comments, etc. */
1550: #define ASM_APP_ON ""
1551:
1552: /* Output to assembler file text saying following lines
1553: no longer contain unusual constructs. */
1554: #define ASM_APP_OFF ""
1555:
1556: /* Format the assembly opcode so that the arguments are all aligned.
1557: The maximum instruction size is 8 characters (fxxx.xxx), so a tab and a
1558: space will do to align the output. Abandon the output if a `%' is
1559: encountered. */
1560: #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
1561: { \
1562: int ch; \
1563: char *orig_ptr; \
1564: \
1565: for (orig_ptr = (PTR); \
1566: (ch = *(PTR)) && ch != ' ' && ch != '\t' && ch != '\n' && ch != '%'; \
1567: (PTR)++) \
1568: putc (ch, STREAM); \
1569: \
1570: if (ch == ' ' && orig_ptr != (PTR) && (PTR) - orig_ptr < 8) \
1571: putc ('\t', STREAM); \
1572: }
1573:
1574: /* How to refer to registers in assembler output.
1575: This sequence is indexed by compiler's hard-register-number.
1576: Updated by OVERRIDE_OPTIONS to include the # for version 03.00 syntax. */
1577:
1578: #define REGISTER_NAMES \
1579: {"#r0"+1, "#r1"+1, "#r2"+1, "#r3"+1, "#r4"+1, "#r5"+1, "#r6"+1, "#r7"+1, \
1580: "#r8"+1, "#r9"+1, "#r10"+1,"#r11"+1,"#r12"+1,"#r13"+1,"#r14"+1,"#r15"+1,\
1581: "#r16"+1,"#r17"+1,"#r18"+1,"#r19"+1,"#r20"+1,"#r21"+1,"#r22"+1,"#r23"+1,\
1582: "#r24"+1,"#r25"+1,"#r26"+1,"#r27"+1,"#r28"+1,"#r29"+1,"#r30"+1,"#r31"+1}
1583:
1584: /* How to renumber registers for dbx and gdb. */
1585: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1586:
1587: /* Tell when to declare ASM names. Override svr4.h to provide this hook. */
1588: #undef DECLARE_ASM_NAME
1589: #define DECLARE_ASM_NAME TARGET_SVR4
1590:
1591: /* Write the extra assembler code needed to declare a function properly. */
1592: #undef ASM_DECLARE_FUNCTION_NAME
1593: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
1594: do { \
1595: if (DECLARE_ASM_NAME) \
1596: { \
1.1.1.2 ! root 1597: fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
1.1 root 1598: assemble_name (FILE, NAME); \
1599: putc (',', FILE); \
1600: fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
1601: putc ('\n', FILE); \
1602: } \
1603: ASM_OUTPUT_LABEL(FILE, NAME); \
1604: } while (0)
1605:
1606: /* Write the extra assembler code needed to declare an object properly. */
1607: #undef ASM_DECLARE_OBJECT_NAME
1608: #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
1609: do { \
1610: if (DECLARE_ASM_NAME) \
1611: { \
1.1.1.2 ! root 1612: fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
1.1 root 1613: assemble_name (FILE, NAME); \
1614: putc (',', FILE); \
1615: fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
1616: putc ('\n', FILE); \
1617: if (!flag_inhibit_size_directive) \
1618: { \
1.1.1.2 ! root 1619: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1.1 root 1620: assemble_name (FILE, NAME); \
1621: fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (decl))); \
1622: } \
1623: } \
1624: ASM_OUTPUT_LABEL(FILE, NAME); \
1625: } while (0)
1626:
1627: /* This is how to declare the size of a function. */
1628: #undef ASM_DECLARE_FUNCTION_SIZE
1629: #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
1630: do { \
1631: if (DECLARE_ASM_NAME) \
1632: { \
1633: if (!flag_inhibit_size_directive) \
1634: { \
1635: char label[256]; \
1636: static int labelno; \
1637: labelno++; \
1638: ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
1639: ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
1.1.1.2 ! root 1640: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
1.1 root 1641: assemble_name (FILE, (FNAME)); \
1642: fprintf (FILE, ",%s-", &label[1]); \
1643: assemble_name (FILE, (FNAME)); \
1644: putc ('\n', FILE); \
1645: } \
1646: } \
1647: } while (0)
1648:
1649: /* This is how to output the definition of a user-level label named NAME,
1650: such as the label on a static function or variable NAME. */
1651: #define ASM_OUTPUT_LABEL(FILE,NAME) \
1652: do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1653:
1654: /* This is how to output a command to make the user-level label named NAME
1655: defined for reference from other files. */
1656: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
1657: do { \
1.1.1.2 ! root 1658: fprintf (FILE, "\t%s\t ", GLOBAL_ASM_OP); \
1.1 root 1659: assemble_name (FILE, NAME); \
1660: putc ('\n', FILE); \
1661: } while (0)
1662:
1663: /* This is how to output a reference to a user-level label named NAME.
1664: Override svr[34].h. */
1665: #undef ASM_OUTPUT_LABELREF
1666: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
1667: { \
1668: if (! TARGET_NO_UNDERSCORES && ! VERSION_0300_SYNTAX) \
1669: fputc ('_', FILE); \
1670: fputs (NAME, FILE); \
1671: }
1672:
1673: /* This is how to output an internal numbered label where
1674: PREFIX is the class of label and NUM is the number within the class.
1675: For V.4, labels use `.' rather than `@'. */
1676:
1677: #ifdef AS_BUG_DOT_LABELS /* The assembler requires a declaration of local. */
1678: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1.1.1.2 ! root 1679: fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n\t%s\t .%s%d\n" : "@%s%d:\n", \
1.1 root 1680: PREFIX, NUM, INTERNAL_ASM_OP, PREFIX, NUM)
1681: #else
1682: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1683: fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n" : "@%s%d:\n", PREFIX, NUM)
1684: #endif /* AS_BUG_DOT_LABELS */
1685:
1686: /* This is how to store into the string LABEL
1687: the symbol_ref name of an internal numbered label where
1688: PREFIX is the class of label and NUM is the number within the class.
1689: This is suitable for output with `assemble_name'. This must agree
1690: with ASM_OUTPUT_INTERNAL_LABEL above, except for being prefixed
1691: with an `*'. */
1692:
1693: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1694: sprintf (LABEL, VERSION_0300_SYNTAX ? "*.%s%d" : "*@%s%d", PREFIX, NUM)
1695:
1696: /* Internal macro to get a single precision floating point value into
1697: an int, so we can print it's value in hex. */
1698: #define FLOAT_TO_INT_INTERNAL( FVALUE, IVALUE ) \
1699: { union { \
1700: REAL_VALUE_TYPE d; \
1701: struct { \
1702: unsigned sign : 1; \
1703: unsigned exponent1 : 1; \
1704: unsigned exponent2 : 3; \
1705: unsigned exponent3 : 7; \
1706: unsigned mantissa1 : 20; \
1707: unsigned mantissa2 : 3; \
1708: unsigned mantissa3 : 29; \
1709: } s; \
1710: } _u; \
1711: \
1712: union { \
1713: int i; \
1714: struct { \
1715: unsigned sign : 1; \
1716: unsigned exponent1 : 1; \
1717: unsigned exponent3 : 7; \
1718: unsigned mantissa1 : 20; \
1719: unsigned mantissa2 : 3; \
1720: } s; \
1721: } _u2; \
1722: \
1723: _u.d = REAL_VALUE_TRUNCATE (SFmode, FVALUE); \
1724: _u2.s.sign = _u.s.sign; \
1725: _u2.s.exponent1 = _u.s.exponent1; \
1726: _u2.s.exponent3 = _u.s.exponent3; \
1727: _u2.s.mantissa1 = _u.s.mantissa1; \
1728: _u2.s.mantissa2 = _u.s.mantissa2; \
1729: IVALUE = _u2.i; \
1730: }
1731:
1732: /* This is how to output an assembler line defining a `double' constant.
1733: Use "word" pseudos to avoid printing NaNs, infinity, etc. */
1734: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
1735: do { \
1736: union { REAL_VALUE_TYPE d; long l[2]; } x; \
1737: x.d = (VALUE); \
1.1.1.2 ! root 1738: fprintf (FILE, "\t%s\t 0x%.8x, 0x%.8x\n", INT_ASM_OP, \
1.1 root 1739: x.l[0], x.l[1]); \
1740: } while (0)
1741:
1742: /* This is how to output an assembler line defining a `float' constant. */
1743: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
1744: do { \
1745: int i; \
1746: FLOAT_TO_INT_INTERNAL (VALUE, i); \
1.1.1.2 ! root 1747: fprintf (FILE, "\t%s\t 0x%.8x\n", INT_ASM_OP, i); \
1.1 root 1748: } while (0)
1749:
1750: /* Likewise for `int', `short', and `char' constants. */
1751: #define ASM_OUTPUT_INT(FILE,VALUE) \
1.1.1.2 ! root 1752: ( fprintf (FILE, "\t%s\t ", INT_ASM_OP), \
1.1 root 1753: output_addr_const (FILE, (VALUE)), \
1754: fprintf (FILE, "\n"))
1755:
1756: #define ASM_OUTPUT_SHORT(FILE,VALUE) \
1.1.1.2 ! root 1757: ( fprintf (FILE, "\t%s\t ", SHORT_ASM_OP), \
1.1 root 1758: output_addr_const (FILE, (VALUE)), \
1759: fprintf (FILE, "\n"))
1760:
1761: #define ASM_OUTPUT_CHAR(FILE,VALUE) \
1.1.1.2 ! root 1762: ( fprintf (FILE, "\t%s\t ", CHAR_ASM_OP), \
1.1 root 1763: output_addr_const (FILE, (VALUE)), \
1764: fprintf (FILE, "\n"))
1765:
1766: /* This is how to output an assembler line for a numeric constant byte. */
1767: #define ASM_OUTPUT_BYTE(FILE,VALUE) \
1.1.1.2 ! root 1768: fprintf (FILE, "\t%s\t 0x%x\n", CHAR_ASM_OP, (VALUE))
1.1 root 1769:
1770: /* The singl-byte pseudo-op is the default. Override svr[34].h. */
1771: #undef ASM_BYTE_OP
1772: #define ASM_BYTE_OP "\tbyte"
1773: #undef ASM_OUTPUT_ASCII
1774: #define ASM_OUTPUT_ASCII(FILE, P, SIZE) \
1775: output_ascii ((FILE), (P), (SIZE))
1776:
1777: /* Epilogue for case labels. This jump instruction is called by casesi
1778: to transfer to the appropriate branch instruction within the table.
1779: The label `@L<n>e' is coined to mark the end of the table. */
1780: #define ASM_OUTPUT_CASE_END(FILE, NUM, TABLE) \
1781: do { \
1782: char label[256]; \
1783: ASM_GENERATE_INTERNAL_LABEL (label, "L", NUM); \
1784: fprintf (FILE, "%se:\n", &label[1]); \
1785: if (! flag_delayed_branch) \
1786: fprintf (FILE, "\tlda\t %s,%s[%s]\n", reg_names[1], reg_names[1], \
1787: reg_names[m88k_case_index]); \
1788: fprintf (FILE, "\tjmp\t %s\n", reg_names[1]); \
1789: } while (0)
1790:
1791: /* This is how to output an element of a case-vector that is absolute. */
1792: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1793: do { \
1794: char buffer[256]; \
1795: ASM_GENERATE_INTERNAL_LABEL (buffer, "L", VALUE); \
1796: fprintf (FILE, "\tbr\t %s\n", &buffer[1]); \
1797: } while (0)
1798:
1799: /* This is how to output an element of a case-vector that is relative. */
1800: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1801: ASM_OUTPUT_ADDR_VEC_ELT (FILE, VALUE)
1802:
1803: /* This is how to output an assembler line
1804: that says to advance the location counter
1805: to a multiple of 2**LOG bytes. */
1806: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1807: if ((LOG) != 0) \
1.1.1.2 ! root 1808: fprintf (FILE, "\t%s\t %d\n", ALIGN_ASM_OP, 1<<(LOG))
1.1 root 1809:
1810: /* Align the text address to half a cache boundary when it can only be
1811: reached by jumping. Pack code tightly when compiling crtstuff.c. */
1812: #define ASM_OUTPUT_ALIGN_CODE(FILE) \
1813: ASM_OUTPUT_ALIGN (FILE, (flag_inhibit_size_directive ? 2 : 3))
1814:
1815: /* Override svr[34].h. */
1816: #undef ASM_OUTPUT_SKIP
1817: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1.1.1.2 ! root 1818: fprintf (FILE, "\t%s\t %u\n", SKIP_ASM_OP, (SIZE))
1.1 root 1819:
1820: /* Override svr4.h. */
1821: #undef ASM_OUTPUT_EXTERNAL_LIBCALL
1822:
1823: /* This says how to output an assembler line to define a global common
1824: symbol. Size can be zero for the unusual case of a `struct { int : 0; }'.
1825: Override svr[34].h. */
1826: #undef ASM_OUTPUT_COMMON
1827: #undef ASM_OUTPUT_ALIGNED_COMMON
1828: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1.1.1.2 ! root 1829: ( fprintf ((FILE), "\t%s\t ", \
! 1830: ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SCOMM_ASM_OP : COMMON_ASM_OP), \
1.1 root 1831: assemble_name ((FILE), (NAME)), \
1832: fprintf ((FILE), ",%u\n", (SIZE) ? (SIZE) : 1))
1833:
1.1.1.2 ! root 1834: /* This says how to output an assembler line to define a local common
1.1 root 1835: symbol. Override svr[34].h. */
1836: #undef ASM_OUTPUT_LOCAL
1837: #undef ASM_OUTPUT_ALIGNED_LOCAL
1838: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1.1.1.2 ! root 1839: ( fprintf ((FILE), "\t%s\t ", \
! 1840: ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SBSS_ASM_OP : LOCAL_ASM_OP), \
1.1 root 1841: assemble_name ((FILE), (NAME)), \
1842: fprintf ((FILE), ",%u,%d\n", (SIZE) ? (SIZE) : 1, (SIZE) <= 4 ? 4 : 8))
1843:
1844: /* Store in OUTPUT a string (made with alloca) containing
1845: an assembler-name for a local static variable named NAME.
1846: LABELNO is an integer which is different for each call. */
1847: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
1848: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
1849: sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
1850:
1851: /* This is how to output an insn to push a register on the stack.
1852: It need not be very fast code. */
1853: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
1854: fprintf (FILE, "\tsubu\t %s,%s,%d\n\tst\t %s,%s,0\n", \
1855: reg_names[STACK_POINTER_REGNUM], \
1856: reg_names[STACK_POINTER_REGNUM], \
1857: (STACK_BOUNDARY / BITS_PER_UNIT), \
1858: reg_names[REGNO], \
1859: reg_names[STACK_POINTER_REGNUM])
1860:
1861: /* This is how to output an insn to pop a register from the stack. */
1862: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
1863: fprintf (FILE, "\tld\t %s,%s,0\n\taddu\t %s,%s,%d\n", \
1864: reg_names[REGNO], \
1865: reg_names[STACK_POINTER_REGNUM], \
1866: reg_names[STACK_POINTER_REGNUM], \
1867: reg_names[STACK_POINTER_REGNUM], \
1868: (STACK_BOUNDARY / BITS_PER_UNIT))
1869:
1870: /* Define the parentheses used to group arithmetic operations
1871: in assembler code. */
1872: #define ASM_OPEN_PAREN "("
1873: #define ASM_CLOSE_PAREN ")"
1874:
1875: /* Define results of standard character escape sequences. */
1876: #define TARGET_BELL 007
1877: #define TARGET_BS 010
1878: #define TARGET_TAB 011
1879: #define TARGET_NEWLINE 012
1880: #define TARGET_VT 013
1881: #define TARGET_FF 014
1882: #define TARGET_CR 015
1883:
1884: /* Macros to deal with OCS debug information */
1885:
1886: #define OCS_START_PREFIX "Ltb"
1887: #define OCS_END_PREFIX "Lte"
1888:
1889: #define PUT_OCS_FUNCTION_START(FILE) \
1890: { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_START_PREFIX, m88k_function_number); }
1891:
1892: #define PUT_OCS_FUNCTION_END(FILE) \
1893: { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_END_PREFIX, m88k_function_number); }
1894:
1895: /* Macros for debug information */
1896: #define DEBUGGER_AUTO_OFFSET(X) \
1897: (m88k_debugger_offset (X, 0) \
1898: + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
1899:
1900: #define DEBUGGER_ARG_OFFSET(OFFSET, X) \
1901: (m88k_debugger_offset (X, OFFSET) \
1902: + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset))
1903:
1904: /* Macros to deal with SDB debug information */
1905: #ifdef SDB_DEBUGGING_INFO
1906:
1907: /* Output structure tag names even when it causes a forward reference. */
1908: #define SDB_ALLOW_FORWARD_REFERENCES
1909:
1910: /* Print out extra debug information in the assembler file */
1911: #define PUT_SDB_SCL(a) \
1912: do { \
1913: register int s = (a); \
1914: register char *scl; \
1915: switch (s) \
1916: { \
1917: case C_EFCN: scl = "end of function"; break; \
1918: case C_NULL: scl = "NULL storage class"; break; \
1919: case C_AUTO: scl = "automatic"; break; \
1920: case C_EXT: scl = "external"; break; \
1921: case C_STAT: scl = "static"; break; \
1922: case C_REG: scl = "register"; break; \
1923: case C_EXTDEF: scl = "external definition"; break; \
1924: case C_LABEL: scl = "label"; break; \
1925: case C_ULABEL: scl = "undefined label"; break; \
1926: case C_MOS: scl = "structure member"; break; \
1927: case C_ARG: scl = "argument"; break; \
1928: case C_STRTAG: scl = "structure tag"; break; \
1929: case C_MOU: scl = "union member"; break; \
1930: case C_UNTAG: scl = "union tag"; break; \
1931: case C_TPDEF: scl = "typedef"; break; \
1932: case C_USTATIC: scl = "uninitialized static"; break; \
1933: case C_ENTAG: scl = "enumeration tag"; break; \
1934: case C_MOE: scl = "member of enumeration"; break; \
1935: case C_REGPARM: scl = "register parameter"; break; \
1936: case C_FIELD: scl = "bit field"; break; \
1937: case C_BLOCK: scl = "block start/end"; break; \
1938: case C_FCN: scl = "function start/end"; break; \
1939: case C_EOS: scl = "end of structure"; break; \
1940: case C_FILE: scl = "filename"; break; \
1941: case C_LINE: scl = "line"; break; \
1942: case C_ALIAS: scl = "duplicated tag"; break; \
1943: case C_HIDDEN: scl = "hidden"; break; \
1944: default: scl = "unknown"; break; \
1945: } \
1946: \
1947: fprintf(asm_out_file, "\tscl\t %d\t\t\t\t; %s\n", s, scl); \
1948: } while (0)
1949:
1950: #define PUT_SDB_TYPE(a) \
1951: do { \
1952: register int t = (a); \
1953: static char buffer[100]; \
1954: register char *p = buffer, *q; \
1955: register int typ = t; \
1956: register int i,d; \
1957: \
1958: for (i = 0; i <= 5; i++) \
1959: { \
1960: switch ((typ >> ((i*N_TSHIFT) + N_BTSHFT)) & 03) \
1961: { \
1962: case DT_PTR: \
1963: strcpy (p, "ptr to "); \
1964: p += sizeof("ptr to"); \
1965: break; \
1966: \
1967: case DT_ARY: \
1968: strcpy (p, "array of "); \
1969: p += sizeof("array of"); \
1970: break; \
1971: \
1972: case DT_FCN: \
1973: strcpy (p, "func ret "); \
1974: p += sizeof("func ret"); \
1975: break; \
1976: } \
1977: } \
1978: \
1979: switch (typ & N_BTMASK) \
1980: { \
1981: case T_NULL: q = "<no type>"; break; \
1982: case T_CHAR: q = "char"; break; \
1983: case T_SHORT: q = "short"; break; \
1984: case T_INT: q = "int"; break; \
1985: case T_LONG: q = "long"; break; \
1986: case T_FLOAT: q = "float"; break; \
1987: case T_DOUBLE: q = "double"; break; \
1988: case T_STRUCT: q = "struct"; break; \
1989: case T_UNION: q = "union"; break; \
1990: case T_ENUM: q = "enum"; break; \
1991: case T_MOE: q = "enum member"; break; \
1992: case T_UCHAR: q = "unsigned char"; break; \
1993: case T_USHORT: q = "unsigned short"; break; \
1994: case T_UINT: q = "unsigned int"; break; \
1995: case T_ULONG: q = "unsigned long"; break; \
1996: default: q = "void"; break; \
1997: } \
1998: \
1999: strcpy (p, q); \
2000: fprintf(asm_out_file, "\ttype\t %d\t\t\t\t; %s\n", \
2001: t, buffer); \
2002: } while (0)
2003:
2004: #define PUT_SDB_INT_VAL(a) \
2005: fprintf (asm_out_file, "\tval\t %d\n", (a))
2006:
2007: #define PUT_SDB_VAL(a) \
2008: ( fprintf (asm_out_file, "\tval\t "), \
2009: output_addr_const (asm_out_file, (a)), \
2010: fputc ('\n', asm_out_file))
2011:
2012: #define PUT_SDB_DEF(a) \
2013: do { fprintf (asm_out_file, "\tsdef\t "); \
2014: ASM_OUTPUT_LABELREF (asm_out_file, a); \
2015: fputc ('\n', asm_out_file); \
2016: } while (0)
2017:
2018: #define PUT_SDB_PLAIN_DEF(a) \
2019: fprintf(asm_out_file,"\tsdef\t .%s\n", a)
2020:
2021: /* Simply and endef now. */
2022: #define PUT_SDB_ENDEF \
2023: fputs("\tendef\n\n", asm_out_file)
2024:
2025: #define PUT_SDB_SIZE(a) \
2026: fprintf (asm_out_file, "\tsize\t %d\n", (a))
2027:
2028: /* Max dimensions to store for debug information (limited by COFF). */
2029: #define SDB_MAX_DIM 6
2030:
2031: /* New method for dim operations. */
2032: #define PUT_SDB_START_DIM \
2033: fputs("\tdim\t ", asm_out_file)
2034:
2035: /* How to end the DIM sequence. */
2036: #define PUT_SDB_LAST_DIM(a) \
2037: fprintf(asm_out_file, "%d\n", a)
2038:
2039: #define PUT_SDB_TAG(a) \
2040: do { \
2041: fprintf (asm_out_file, "\ttag\t "); \
2042: ASM_OUTPUT_LABELREF (asm_out_file, a); \
2043: fputc ('\n', asm_out_file); \
2044: } while( 0 )
2045:
2046: #define PUT_SDB_BLOCK_OR_FUNCTION(NAME, SCL, LINE) \
2047: do { \
2048: fprintf (asm_out_file, "\n\tsdef\t %s\n\tval\t .\n", \
2049: NAME); \
2050: PUT_SDB_SCL( SCL ); \
2051: fprintf (asm_out_file, "\tline\t %d\n\tendef\n\n", \
2052: (LINE)); \
2053: } while (0)
2054:
2055: #define PUT_SDB_BLOCK_START(LINE) \
2056: PUT_SDB_BLOCK_OR_FUNCTION (".bb", C_BLOCK, (LINE))
2057:
2058: #define PUT_SDB_BLOCK_END(LINE) \
2059: PUT_SDB_BLOCK_OR_FUNCTION (".eb", C_BLOCK, (LINE))
2060:
2061: #define PUT_SDB_FUNCTION_START(LINE) \
2062: do { \
2063: fprintf (asm_out_file, "\tln\t 1\n"); \
2064: PUT_SDB_BLOCK_OR_FUNCTION (".bf", C_FCN, (LINE)); \
2065: } while (0)
2066:
2067: #define PUT_SDB_FUNCTION_END(LINE) \
2068: do { \
2069: PUT_SDB_BLOCK_OR_FUNCTION (".ef", C_FCN, (LINE)); \
2070: } while (0)
2071:
2072: #define PUT_SDB_EPILOGUE_END(NAME) \
2073: do { \
2074: text_section (); \
2075: fprintf (asm_out_file, "\n\tsdef\t "); \
2076: ASM_OUTPUT_LABELREF(asm_out_file, (NAME)); \
2077: fputc('\n', asm_out_file); \
2078: PUT_SDB_SCL( C_EFCN ); \
2079: fprintf (asm_out_file, "\tendef\n\n"); \
2080: } while (0)
2081:
2082: #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \
2083: sprintf ((BUFFER), ".%dfake", (NUMBER));
2084:
2085: #endif /* SDB_DEBUGGING_INFO */
2086:
2087: /* Support const and tdesc sections. Generally, a const section will
2088: be distinct from the text section whenever we do V.4-like things
2089: and so follows DECLARE_ASM_NAME. Note that strings go in text
2090: rather than const. Override svr[34].h. */
2091:
2092: #undef USE_CONST_SECTION
2093: #undef EXTRA_SECTIONS
2094:
2095: #define USE_CONST_SECTION DECLARE_ASM_NAME
2096:
2097: #if defined(CTORS_SECTION_FUNCTION) /* SVR4 */
2098:
2099: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors
2100: #define INIT_SECTION_FUNCTION
2101: #define FINI_SECTION_FUNCTION
2102:
2103: #elif defined(FINI_SECTION_FUNCTION) /* SVR3 */
2104:
2105: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_init, in_fini
2106: #define CTORS_SECTION_FUNCTION
2107: #define DTORS_SECTION_FUNCTION
2108:
2109: #else /* m88kluna or other not based on svr[34].h. */
2110:
2111: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata
2112: #define CONST_SECTION_FUNCTION \
2113: void \
2114: const_section () \
2115: { \
2116: text_section(); \
2117: }
2118: #define CTORS_SECTION_FUNCTION
2119: #define DTORS_SECTION_FUNCTION
2120: #define INIT_SECTION_FUNCTION
2121: #define FINI_SECTION_FUNCTION
2122:
2123: #endif /* CTORS_SECTION_FUNCTION */
2124:
2125: #undef EXTRA_SECTION_FUNCTIONS
2126: #define EXTRA_SECTION_FUNCTIONS \
2127: CONST_SECTION_FUNCTION \
2128: \
2129: void \
2130: tdesc_section () \
2131: { \
2132: if (in_section != in_tdesc) \
2133: { \
2134: fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \
2135: in_section = in_tdesc; \
2136: } \
2137: } \
2138: \
2139: void \
2140: sdata_section () \
2141: { \
2142: if (in_section != in_sdata) \
2143: { \
2144: fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
2145: in_section = in_sdata; \
2146: } \
2147: } \
2148: \
2149: CTORS_SECTION_FUNCTION \
2150: DTORS_SECTION_FUNCTION \
2151: INIT_SECTION_FUNCTION \
2152: FINI_SECTION_FUNCTION
2153:
2154: #undef READONLY_DATA_SECTION
2155:
2156: /* A C statement or statements to switch to the appropriate
2157: section for output of DECL. DECL is either a `VAR_DECL' node
2158: or a constant of some sort. RELOC indicates whether forming
2159: the initial value of DECL requires link-time relocations.
2160:
2161: For strings, the section is selected before the segment info is encoded. */
2162: #undef SELECT_SECTION
2163: #define SELECT_SECTION(DECL,RELOC) \
2164: { \
2165: if (TREE_CODE (DECL) == STRING_CST) \
2166: { \
2167: if (! flag_writable_strings) \
2168: const_section (); \
2169: else if (m88k_gp_threshold > 0 \
2170: && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \
2171: sdata_section (); \
2172: else \
2173: data_section (); \
2174: } \
2175: else if (TREE_CODE (DECL) == VAR_DECL) \
2176: { \
2177: if (SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0))) \
2178: sdata_section (); \
2179: else if ((flag_pic && RELOC) \
2180: || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
2181: data_section (); \
2182: else \
2183: const_section (); \
2184: } \
2185: else \
2186: const_section (); \
2187: }
2188:
2189: /* Define this macro if references to a symbol must be treated differently
2190: depending on something about the variable or function named by the
2191: symbol (such as what section it is in).
2192:
2193: The macro definition, if any, is executed immediately after the rtl for
2194: DECL has been created and stored in `DECL_RTL (DECL)'. The value of the
2195: rtl will be a `mem' whose address is a `symbol_ref'.
2196:
2197: For the m88k, determine if the item should go in the global pool. */
2198: #define ENCODE_SECTION_INFO(DECL) \
2199: do { \
2200: if (m88k_gp_threshold > 0) \
2201: if (TREE_CODE (DECL) == VAR_DECL) \
2202: { \
2203: if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \
2204: { \
2205: int size = int_size_in_bytes (TREE_TYPE (DECL)); \
2206: \
2207: if (size > 0 && size <= m88k_gp_threshold) \
2208: SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \
2209: } \
2210: } \
2211: else if (TREE_CODE (DECL) == STRING_CST \
2212: && flag_writable_strings \
2213: && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \
2214: SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 1; \
2215: } while (0)
2216:
2217: /* Print operand X (an rtx) in assembler syntax to file FILE.
2218: CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
2219: For `%' followed by punctuation, CODE is the punctuation and X is null. */
2220: #define PRINT_OPERAND_PUNCT_VALID_P(c) \
2221: ((c) == '#' || (c) == '.' || (c) == '!' || (c) == '*' || (c) == ';')
2222:
2223: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
2224:
2225: /* Print a memory address as an operand to reference that memory location. */
2226: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
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