![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to crds.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GCC 2.x] / gcc / config|
Return to crds.h CVS log | Up to [GCC 2.x] / gcc / config |
1.1 root 1: /* Definitions of target machine for GNU compiler.
2: Charles River Data Systems UNiverse/32
3:
4: Written by Gary E. Miller
5: bug reports to [email protected]
6:
7: Copyright (C) 1987 Free Software Foundation, Inc.
8:
9: This file is part of GNU CC.
10:
11: GNU CC is free software; you can redistribute it and/or modify
12: it under the terms of the GNU General Public License as published by
13: the Free Software Foundation; either version 2, or (at your option)
14: any later version.
15:
16: GNU CC is distributed in the hope that it will be useful,
17: but WITHOUT ANY WARRANTY; without even the implied warranty of
18: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: GNU General Public License for more details.
20:
21: You should have received a copy of the GNU General Public License
22: along with GNU CC; see the file COPYING. If not, write to
23: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
24:
25: #define MOTOROLA /* Use Motorola syntax rather than "MIT" */
26: #define SGS /* Uses SGS assembler */
27: #define SGS_SWITCH_TABLES /* Different switch table handling */
28: #define CRDS /* Charles River Data Systems assembler */
29:
30: #include "m68k.h"
31:
32: /* Without STRUCTURE_SIZE_BOUNDARY, we can't ensure that structures are
33: aligned such that we can correctly extract bitfields from them.
34: Someone should check whether the usual compiler on the crds machine
35: provides the equivalent behavior of STRUCTURE_SIZE_BOUNDARY. */
36: #error This doesn't define STRUCTURE_SIZE_BOUNDARY
37:
38: /* See m68k.h. 0 means 680[01]0 with no 68881. */
39:
40: #undef TARGET_DEFAULT
41: #define TARGET_DEFAULT 0
42:
43: /* special flags to the unos assembler. */
44:
45: #undef ASM_SPEC
46: #define ASM_SPEC "-g"
47:
48: #undef LIB_SPEC
49: #define LIB_SPEC "%{!p:%{!pg:-lunos}}%{p:-lc_p}%{pg:-lc_p}"
50:
51: #undef STARTFILE_SPEC
52: #define STARTFILE_SPEC \
53: "%{pg:gcrt0.o%s}%{!pg:%{p:mc68rt0.o%s}%{!p:c68rt0.o%s}}"
54:
55: /* CC1 spec */
56: #if 0
57: /* c.sac only used in _s_call_r() in libunos.a and malloc() in libmalloc.a */
58: /* so we do not need to bother ! */
59: #define CC1_SPEC "-fpcc-struct-return"
60: #endif
61:
62: /* -O2 for MAX optimization */
63: #undef CC1_SPEC
64: #define CC1_SPEC "%{O2:-fstrength-reduce}"
65:
66: /* cpp has to support a #sccs directive for the /usr/include files */
67:
68: #define SCCS_DIRECTIVE
69:
70: /* Make output for SDB. */
71:
72: /* #define SDB_DEBUGGING_INFO UNOS casm has no debugging :-( */
73:
74: /* UNOS has vprintf() */
75:
76: #define HAVE_VPRINTF
77:
78: /* UNOS need stack probe :-( */
79:
80: #define HAVE_probe 1
81: #define gen_probe() gen_rtx(ASM_INPUT, VOIDmode, "tstb -2048(sp)\t;probe\n")
82:
83: /* use memcpy, memset instead of bcopy, etc. */
84:
85: #define TARGET_MEM_FUNCTIONS
86:
87: /* Don't try to define `gcc_compiled.' since the assembler might not
88: accept symbols with periods and GDB doesn't run on this machine anyway. */
89: #define ASM_IDENTIFY_GCC(FILE)
90:
91: /* Define __HAVE_68881__ in preprocessor if -m68881 is specified.
92: This will control the use of inline 68881 insns in certain macros. */
93:
94: #undef CPP_SPEC
95: #define CPP_SPEC "%{m68881:-D__HAVE_68881__}"
96:
97: /* Names to predefine in the preprocessor for this target machine. */
98:
99: #undef CPP_PREDEFINES
100: #define CPP_PREDEFINES "-Dmc68k -DM68000 -Dmc68000 -Dunos -Dunix"
101:
102: /* Register in which address to store a structure value
103: is passed to a function. */
104: /* unos uses ".comm c.sac" returns &c.sac in d0 */
105: /* make pointer to c.sac ?
106: #undef STRUCT_VALUE_REGNUM
107: #define STRUCT_VALUE gen_rtx(MEM, Pmode, gen_rtx( , , ) )
108: */
109:
110: #define EXTRA_SECTIONS in_bss
111:
112: #define EXTRA_SECTION_FUNCTIONS \
113: void \
114: bss_section () \
115: { \
116: if (in_section != in_bss) \
117: { \
118: fprintf (asm_out_file, ".bss\n"); \
119: in_section = in_bss; \
120: } \
121: }
122:
123: /* Specify how to pad function arguments.
124: Value should be `upward', `downward' or `none'.
125: Same as the default, except no padding for large or variable-size args. */
126:
127: #define FUNCTION_ARG_PADDING(MODE, TYPE) \
128: (((MODE) == BLKmode \
129: ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
130: && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \
131: : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
132: ? downward : none)
133:
134: /* Override part of the obstack macros. */
135:
136: #define __PTR_TO_INT(P) ((int)(P))
137: #define __INT_TO_PTR(P) ((char *)(P))
138:
139: /* Override parts of m68k.h to fit the CRuDS assembler. */
140:
141: #undef TARGET_VERSION
142: #define TARGET_VERSION fprintf (stderr, " (68k, CRDS/UNOS)");
143:
144: /* Specify extra dir to search for include files. */
145: #define SYSTEM_INCLUDE_DIR "/include"
146:
147: /* Control the assembler format that we output. */
148:
149: /* Output at beginning of assembler file. */
150:
151: #undef ASM_FILE_START
152: #define ASM_FILE_START(FILE) \
153: fprintf (FILE, ";#NO_APP\n");
154:
155: /* Output to assembler file text saying following lines
156: may contain character constants, extra white space, comments, etc. */
157:
158: #undef ASM_APP_ON
159: #define ASM_APP_ON ";#APP\n"
160:
161: /* Output to assembler file text saying following lines
162: no longer contain unusual constructs. */
163:
164: #undef ASM_APP_OFF
165: #define ASM_APP_OFF ";#NO_APP\n"
166:
167: /* This is how to output an assembler line defining a `double' constant. */
168:
169: #undef ASM_OUTPUT_DOUBLE
170: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
171: do { union { double f; long l[2];} tem; \
172: tem.f = (VALUE); \
173: fprintf (FILE, "\t.long 0x%x, 0x%x\n", tem.l[0], tem.l[1]); \
174: } while (0)
175:
176: /*unos has no .skip :-( */
177: #undef ASM_OUTPUT_SKIP
178: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
179: fprintf (FILE, "\t. = . + %u\n", (SIZE));
180:
181: /* This says how to output an assembler line
182: to define a local common symbol. */
183: /* should use bss_section instead of data_section but this makes casm die ? */
184:
185: #undef ASM_OUTPUT_LOCAL
186: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
187: { data_section (); \
188: if ((SIZE) > 1) fprintf (FILE, "\t.even\n"); \
189: assemble_name ((FILE), (NAME)); \
190: fprintf ((FILE), ":\t. = . + %u\n", (ROUNDED));}
191:
192: /* This is how to output an insn to push a register on the stack.
193: It need not be very fast code. */
194:
195: #undef ASM_OUTPUT_REG_PUSH
196: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
197: fprintf (FILE, "\tmovel %s,-(sp)\n", reg_names[REGNO])
198:
199: /* This is how to output an insn to pop a register from the stack.
200: It need not be very fast code. */
201:
202: #undef ASM_OUTPUT_REG_POP
203: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
204: fprintf (FILE, "\tmovel (sp)+,%s\n", reg_names[REGNO])
205:
206: #undef ASM_OUTPUT_ASCII
207: #define ASM_OUTPUT_ASCII(FILE, P , SIZE) \
208: { int i; \
209: fprintf ((FILE), "\t.ascii \""); \
210: for (i = 0; i < (SIZE); i++) \
211: { \
212: register int c = (P)[i]; \
213: if (i != 0 && (i / 200) * 200 == i) \
214: fprintf ((FILE), "\"\n\t.ascii \""); \
215: if (c >= ' ' && c < 0177) { \
216: if (c != '\"' && c != '\\') { \
217: putc (c, (FILE)); \
218: continue; \
219: } \
220: } \
221: /* brain dead asm doesn't understand char escapes */ \
222: fprintf ((FILE), "\"\n\t.byte\t%d\n\t.ascii \"", c); \
223: } \
224: fprintf ((FILE), "\"\n"); \
225: }
226:
227:
228: /* Change all JBxx to Bxx. Also change all DBRA to DBF.
229: Also change divs.l, etc., to divs, etc. But don't change divsl.l. */
230:
231: #define ASM_OUTPUT_OPCODE(FILE, PTR) \
232: { if ((PTR)[0] == 'j' && (PTR)[1] == 'b') \
233: { ++(PTR); } \
234: else if ((PTR)[0] == 'd') \
235: { \
236: if (!strncmp ((PTR), "dbra", 4)) \
237: { fprintf ((FILE), "dbf"); (PTR) += 4; } \
238: else if (!strncmp ((PTR), "div", 3) && (PTR)[5] == ' ') \
239: { fprintf ((FILE), "div%c", (PTR)[3]); (PTR) += 6; } \
240: } \
241: }
242:
243:
244: /* Print operand X (an rtx) in assembler syntax to file FILE.
245: CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
246: For `%' followed by punctuation, CODE is the punctuation and X is null.
247:
248: On the 68000, we use several CODE characters:
249: '.' for dot needed in Motorola-style opcode names.
250: '-' for an operand pushing on the stack:
251: sp@-, -(sp) or -(%sp) depending on the style of syntax.
252: '+' for an operand pushing on the stack:
253: sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
254: '@' for a reference to the top word on the stack:
255: sp@, (sp) or (%sp) depending on the style of syntax.
256: '#' for an immediate operand prefix (# in MIT and Motorola syntax
257: but & in SGS syntax, $ in unos syntax).
1.1.1.2 ! root 258: '!' for the fpcr register (used in some float-to-fixed conversions).
1.1 root 259:
260: 'b' for byte insn (no effect, on the Sun; this is for the ISI).
261: 'd' to force memory addressing to be absolute, not relative.
262: 'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
263: 'w' for FPA insn (print a CONST_DOUBLE as a SunFPA constant rather
264: than directly). Second part of 'y' below.
265: 'x' for float insn (print a CONST_DOUBLE as a float rather than in hex),
266: or print pair of registers as rx:ry.
267: 'y' for a FPA insn (print pair of registers as rx:ry). This also outputs
268: CONST_DOUBLE's as SunFPA constant RAM registers if
269: possible, so it should not be used except for the SunFPA. */
270:
271: #undef PRINT_OPERAND_PUNCT_VALID_P
272: #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
273: ((CODE) == '.' || (CODE) == '#' || (CODE) == '-' \
274: || (CODE) == '+' || (CODE) == '@' || (CODE) == '!')
275:
276: #undef PRINT_OPERAND
277: #define PRINT_OPERAND(FILE, X, CODE) \
278: { int i; \
279: if (CODE == '.') ; \
280: else if (CODE == '#') fprintf (FILE, "$"); \
281: else if (CODE == '-') fprintf (FILE, "-(sp)"); \
282: else if (CODE == '+') fprintf (FILE, "(sp)+"); \
283: else if (CODE == '@') fprintf (FILE, "(sp)"); \
1.1.1.2 ! root 284: else if (CODE == '!') fprintf (FILE, "fpcr"); \
1.1 root 285: else if (GET_CODE (X) == REG) \
286: { if (REGNO (X) < 16 && (CODE == 'y' || CODE == 'x') && GET_MODE (X) == DFmode) \
287: fprintf (FILE, "%s:%s", reg_names[REGNO (X)], reg_names[REGNO (X)+1]); \
288: else \
289: fprintf (FILE, "%s", reg_names[REGNO (X)]); \
290: } \
291: else if (GET_CODE (X) == MEM) \
292: { \
293: output_address (XEXP (X, 0)); \
294: if (CODE == 'd' && ! TARGET_68020 \
295: && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
296: /* fprintf (FILE, ".l") */; \
297: } \
298: else if ((CODE == 'y' || CODE == 'w') \
299: && GET_CODE(X) == CONST_DOUBLE \
300: && (i = standard_sun_fpa_constant_p (X))) \
301: fprintf (FILE, "%%%d", i & 0x1ff); \
302: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
303: { union { double d; int i[2]; } u; \
304: union { float f; int i; } u1; \
305: u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
306: u1.f = u.d; \
307: if (CODE == 'f') \
308: ASM_OUTPUT_FLOAT_OPERAND (FILE, u1.f); \
309: else \
310: fprintf (FILE, "$0x%x", u1.i); } \
311: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode) \
312: { union { double d; int i[2]; } u; \
313: u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
314: ASM_OUTPUT_DOUBLE_OPERAND (FILE, u.d); } \
315: else { putc ('$', FILE); output_addr_const (FILE, X); }}
316:
317: /* Note that this contains a kludge that knows that the only reason
318: we have an address (plus (label_ref...) (reg...))
319: is in the insn before a tablejump, and we know that m68k.md
320: generates a label LInnn: on such an insn. */
321: #undef PRINT_OPERAND_ADDRESS
322: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
323: { register rtx reg1, reg2, breg, ireg; \
324: register rtx addr = ADDR; \
325: rtx offset; \
326: switch (GET_CODE (addr)) \
327: { \
328: case REG: \
329: fprintf (FILE, "(%s)", reg_names[REGNO (addr)]); \
330: break; \
331: case PRE_DEC: \
332: fprintf (FILE, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]); \
333: break; \
334: case POST_INC: \
335: fprintf (FILE, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]); \
336: break; \
337: case PLUS: \
338: reg1 = 0; reg2 = 0; \
339: ireg = 0; breg = 0; \
340: offset = 0; \
341: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
342: { \
343: offset = XEXP (addr, 0); \
344: addr = XEXP (addr, 1); \
345: } \
346: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
347: { \
348: offset = XEXP (addr, 1); \
349: addr = XEXP (addr, 0); \
350: } \
351: if (GET_CODE (addr) != PLUS) ; \
352: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
353: { \
354: reg1 = XEXP (addr, 0); \
355: addr = XEXP (addr, 1); \
356: } \
357: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
358: { \
359: reg1 = XEXP (addr, 1); \
360: addr = XEXP (addr, 0); \
361: } \
362: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
363: { \
364: reg1 = XEXP (addr, 0); \
365: addr = XEXP (addr, 1); \
366: } \
367: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
368: { \
369: reg1 = XEXP (addr, 1); \
370: addr = XEXP (addr, 0); \
371: } \
372: else if (GET_CODE (XEXP (addr, 0)) == REG) \
373: { \
374: reg1 = XEXP (addr, 0); \
375: addr = XEXP (addr, 1); \
376: } \
377: else if (GET_CODE (XEXP (addr, 1)) == REG) \
378: { \
379: reg1 = XEXP (addr, 1); \
380: addr = XEXP (addr, 0); \
381: } \
382: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
383: || GET_CODE (addr) == SIGN_EXTEND) \
384: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
385: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
386: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
387: || GET_CODE (reg1) == MULT)) \
388: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
389: { breg = reg2; ireg = reg1; } \
390: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
391: { breg = reg1; ireg = reg2; } \
392: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
393: { int scale = 1; \
394: if (GET_CODE (ireg) == MULT) \
395: { scale = INTVAL (XEXP (ireg, 1)); \
396: ireg = XEXP (ireg, 0); } \
397: if (GET_CODE (ireg) == SIGN_EXTEND) \
398: fprintf (FILE, "L%d-LI%d-2(pc,%s.w", \
399: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
400: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
401: reg_names[REGNO (XEXP (ireg, 0))]); \
402: else \
403: fprintf (FILE, "L%d-LI%d-2(pc,%s.l", \
404: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
405: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
406: reg_names[REGNO (ireg)]); \
407: if (scale != 1) fprintf (FILE, ":%d", scale); \
408: putc (')', FILE); \
409: break; } \
410: if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF) \
411: { fprintf (FILE, "L%d-LI%d-2(pc,%s.l", \
412: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
413: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
414: reg_names[REGNO (breg)]); \
415: putc (')', FILE); \
416: break; } \
417: if (ireg != 0 || breg != 0) \
418: { int scale = 1; \
419: if (breg == 0) \
420: abort (); \
421: if (addr && GET_CODE (addr) == LABEL_REF) abort (); \
422: if (addr != 0) \
423: output_addr_const (FILE, addr); \
424: fprintf (FILE, "(%s", reg_names[REGNO (breg)]); \
425: if (breg != 0 && ireg != 0) \
426: putc (',', FILE); \
427: if (ireg != 0 && GET_CODE (ireg) == MULT) \
428: { scale = INTVAL (XEXP (ireg, 1)); \
429: ireg = XEXP (ireg, 0); } \
430: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
431: fprintf (FILE, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]); \
432: else if (ireg != 0) \
433: fprintf (FILE, "%s.l", reg_names[REGNO (ireg)]); \
434: if (scale != 1) fprintf (FILE, ":%d", scale); \
435: putc (')', FILE); \
436: break; \
437: } \
438: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
439: { fprintf (FILE, "L%d-LI%d-2(pc,%s.l)", \
440: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
441: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
442: reg_names[REGNO (reg1)]); \
443: break; } \
444: default: \
445: if (GET_CODE (addr) == CONST_INT \
446: && INTVAL (addr) < 0x8000 \
447: && INTVAL (addr) >= -0x8000) \
448: fprintf (FILE, "%d", INTVAL (addr)); \
449: else \
450: output_addr_const (FILE, addr); \
451: }}
452:
453: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, FILENAME) \
454: fprintf (FILE, "\t; file\t\"%s\"\n", FILENAME)
455:
456: #define ASM_OUTPUT_SOURCE_LINE(FILE, LINENO) \
457: fprintf (FILE, "\t; ln\t%d\n", \
458: (sdb_begin_function_line \
459: ? last_linenum - sdb_begin_function_line : 1))
460:
461: /* This macro generates the assembly code for function entry.
462: FILE is a stdio stream to output the code to.
463: SIZE is an int: how many units of temporary storage to allocate.
464: Refer to the array `regs_ever_live' to determine which registers
465: to save; `regs_ever_live[I]' is nonzero if register number I
466: is ever used in the function. This macro is responsible for
467: knowing which registers should not be saved even if used. */
468:
469: /* Note that the order of the bit mask for fmovem is the opposite
470: of the order for movem! */
471:
472: #undef FUNCTION_PROLOGUE
473: #define FUNCTION_PROLOGUE(FILE, SIZE) \
474: { register int regno; \
475: register int mask = 0; \
476: extern char call_used_regs[]; \
477: int fsize = ((SIZE) + 3) & -4; \
478: /* unos stack probe */ \
479: if ( fsize > 30000 ) { \
480: fprintf (FILE, "\tmovel sp,a0\n"); \
481: fprintf (FILE, "\taddl $-%d,a0\n", 2048 + fsize); \
482: fprintf (FILE, "\ttstb (a0)\n"); \
483: } else { \
484: fprintf (FILE, "\ttstb -%d(sp)\n", 2048 + fsize); \
485: } \
486: if (frame_pointer_needed) \
487: { if (TARGET_68020 || fsize < 0x8000) \
488: fprintf (FILE, "\tlink a6,$%d\n", -fsize); \
489: else \
490: fprintf (FILE, "\tlink a6,$0\n\tsubl $%d,sp\n", fsize); } \
491: for (regno = 24; regno < 56; regno++) \
492: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
493: fprintf(FILE, "\tfpmoved %s, sp@-\n", \
494: reg_names[regno]); \
495: for (regno = 16; regno < 24; regno++) \
496: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
497: mask |= 1 << (regno - 16); \
498: if ((mask & 0xff) != 0) \
499: fprintf (FILE, "\tfmovem $0x%x,-(sp)\n", mask & 0xff); \
500: mask = 0; \
501: for (regno = 0; regno < 16; regno++) \
502: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
503: mask |= 1 << (15 - regno); \
504: if (frame_pointer_needed) \
505: mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
506: if (exact_log2 (mask) >= 0) \
507: fprintf (FILE, "\tmovel %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
508: else if (mask) fprintf (FILE, "\tmovem $0x%x,-(sp)\n", mask); }
509:
510: /* Must put address in %a0 , not %d0 . -- LGM, 7/15/88 */
511: /* UNOS ?? */
512: #undef FUNCTION_PROFILER
513: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
514: fprintf (FILE, "\tmovl &LP%%%d,%%a0\n\tjsr mcount\n", (LABEL_NO))
515:
516: /* This macro generates the assembly code for function exit,
517: on machines that need it. If FUNCTION_EPILOGUE is not defined
518: then individual return instructions are generated for each
519: return statement. Args are same as for FUNCTION_PROLOGUE.
520:
521: The function epilogue should not depend on the current stack pointer!
522: It should use the frame pointer only. This is mandatory because
523: of alloca; we also take advantage of it to omit stack adjustments
524: before returning. */
525:
526: #undef FUNCTION_EPILOGUE
527: #define FUNCTION_EPILOGUE(FILE, SIZE) \
528: { register int regno; \
529: register int mask, fmask; \
530: register int nregs; \
531: int offset, foffset, fpoffset; \
532: extern char call_used_regs[]; \
533: int fsize = ((SIZE) + 3) & -4; \
534: int big = 0; \
535: nregs = 0; fmask = 0; fpoffset = 0; \
536: for (regno = 24 ; regno < 56 ; regno++) \
537: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
538: nregs++; \
539: fpoffset = nregs*8; \
540: nregs = 0; \
541: for (regno = 16; regno < 24; regno++) \
542: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
543: { nregs++; fmask |= 1 << (23 - regno); } \
544: foffset = fpoffset + nregs * 12; \
545: nregs = 0; mask = 0; \
546: if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
547: for (regno = 0; regno < 16; regno++) \
548: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
549: { nregs++; mask |= 1 << regno; } \
550: offset = foffset + nregs * 4; \
551: if (offset + fsize >= 0x8000 \
552: && frame_pointer_needed \
553: && (mask || fmask || fpoffset)) \
554: { fprintf (FILE, "\tmovel $%d,a0\n", -fsize); \
555: fsize = 0, big = 1; } \
556: if (exact_log2 (mask) >= 0) { \
557: if (big) \
558: fprintf (FILE, "\tmovel -%d(a6,a0.l),%s\n", \
559: offset + fsize, reg_names[exact_log2 (mask)]); \
560: else if (! frame_pointer_needed) \
561: fprintf (FILE, "\tmovel (sp)+,%s\n", \
562: reg_names[exact_log2 (mask)]); \
563: else \
564: fprintf (FILE, "\tmovel -%d(a6),%s\n", \
565: offset + fsize, reg_names[exact_log2 (mask)]); } \
566: else if (mask) { \
567: if (big) \
568: fprintf (FILE, "\tmovem -%d(a6,a0.l),$0x%x\n", \
569: offset + fsize, mask); \
570: else if (! frame_pointer_needed) \
571: fprintf (FILE, "\tmovem (sp)+,$0x%x\n", mask); \
572: else \
573: fprintf (FILE, "\tmovem -%d(a6),$0x%x\n", \
574: offset + fsize, mask); } \
575: if (fmask) { \
576: if (big) \
577: fprintf (FILE, "\tfmovem -%d(a6,a0.l),$0x%x\n", \
578: foffset + fsize, fmask); \
579: else if (! frame_pointer_needed) \
580: fprintf (FILE, "\tfmovem (sp)+,$0x%x\n", fmask); \
581: else \
582: fprintf (FILE, "\tfmovem -%d(a6),$0x%x\n", \
583: foffset + fsize, fmask); } \
584: if (fpoffset != 0) \
585: for (regno = 55; regno >= 24; regno--) \
586: if (regs_ever_live[regno] && ! call_used_regs[regno]) { \
587: if (big) \
588: fprintf(FILE, "\tfpmoved -%d(a6,a0.l), %s\n", \
589: fpoffset + fsize, reg_names[regno]); \
590: else if (! frame_pointer_needed) \
591: fprintf(FILE, "\tfpmoved (sp)+, %s\n", \
592: reg_names[regno]); \
593: else \
594: fprintf(FILE, "\tfpmoved -%d(a6), %s\n", \
595: fpoffset + fsize, reg_names[regno]); \
596: fpoffset -= 8; \
597: } \
598: if (frame_pointer_needed) \
599: fprintf (FILE, "\tunlk a6\n"); \
600: if (current_function_pops_args) \
601: fprintf (FILE, "\trtd $%d\n", current_function_pops_args); \
602: else fprintf (FILE, "\trts\n"); }
603:
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.