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1.1 root 1: /* Definitions of target machine for GNU compiler. SONY NEWS-OS 4 version.
2: Copyright (C) 1987, 1989, 1993 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
6: GNU CC is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 2, or (at your option)
9: any later version.
10:
11: GNU CC is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
17: along with GNU CC; see the file COPYING. If not, write to
18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19:
20: #ifndef USE_GAS
21: /* This controls conditionals in m68k.h. */
22: #define MOTOROLA /* Use Motorola syntax rather than "MIT" */
23: #define SGS_NO_LI /* Suppress jump table label usage */
24: #endif
25:
26: #include "m68k/m68k.h"
27:
28: /* See m68k.h. 7 means 68020 with 68881. */
29:
30: #define TARGET_DEFAULT 7
31:
32: /* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
33: This will control the use of inline 68881 insns in certain macros. */
34:
35: #define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__}"
36:
37: /* Names to predefine in the preprocessor for this target machine. */
38: /* These are the ones defined by Sony, plus mc68000 for uniformity with
39: GCC on other 68000 systems. */
40:
41: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews700"
42:
43: /* These conditionals tested for different submodels,
44: but they were incorrect since they tested the host rather than the target.
45: The choice of model shouldn't actually matter. */
46:
47: #if 0
48: #ifdef news800
49: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews800"
50: #endif
51: #ifdef news900
52: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews900"
53: #endif
54: #ifdef news1500
55: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1500"
56: #endif
57: #ifdef news1700
58: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1700"
59: #endif
60: #ifdef news1800
61: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1800"
62: #endif
63: #ifdef news1900
64: #define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1900"
65: #endif
66: #endif
67:
68: /* Link with libg.a when debugging, for dbx's sake. */
69:
70: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} "
71:
72: /* This is BSD, so it wants DBX format. */
73:
74: #define DBX_DEBUGGING_INFO
75:
76: #if 0
77: /* This is to be compatible with types.h.
78: It was found to be necessary with Newsos 3. */
79:
80: #define SIZE_TYPE "long int"
81: #endif
82:
83: /* Override parts of m68k.h to fit Sony's assembler syntax. */
84:
85: #undef BIGGEST_ALIGNMENT
86: #undef CALL_USED_REGISTERS
87: #undef FUNCTION_VALUE
88: #undef LIBCALL_VALUE
89: #undef FUNCTION_PROFILER
90:
91: #ifdef MOTOROLA
92: #undef FUNCTION_PROLOGUE
93: #undef FUNCTION_EPILOGUE
94: #undef REGISTER_NAMES
95: #undef ASM_OUTPUT_REG_PUSH
96: #undef ASM_OUTPUT_REG_POP
97: #undef ASM_OUTPUT_DOUBLE
98: #undef ASM_OUTPUT_SKIP
99: #undef ASM_FORMAT_PRIVATE_NAME
100: #undef PRINT_OPERAND
101: #undef PRINT_OPERAND_ADDRESS
102: #endif
103:
104: #undef ASM_OUTPUT_ALIGN
105:
106: /* There is no point aligning anything to a rounder boundary than this. */
107: #define BIGGEST_ALIGNMENT 32
108:
109: /* A bitfield declared as `int' forces `int' alignment for the struct. */
110: #define PCC_BITFIELD_TYPE_MATTERS 1
111:
112: /* NEWS makes d2, d3, fp2 and fp3 unsaved registers, unlike the Sun system. */
113:
114: #define CALL_USED_REGISTERS \
115: {1, 1, 1, 1, 0, 0, 0, 0, \
116: 1, 1, 0, 0, 0, 0, 0, 1, \
117: 1, 1, 1, 1, 0, 0, 0, 0}
118:
119: /* NEWS returns floats and doubles in fp0, not d0/d1. */
120:
121: #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
122:
123: #define LIBCALL_VALUE(MODE) \
124: gen_rtx (REG, (MODE), \
125: ((TARGET_68881 \
126: && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) \
127: ? 16 : 0))
128:
129: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
130: fprintf (FILE, "\t.align %d\n", (LOG))
131:
132: #ifdef MOTOROLA
133:
134: /* Don't try to define `gcc_compiled.' since the assembler does not
135: accept symbols with periods. This is no real loss since GDB only
136: really needs it for parms passed in registers. */
137: #define ASM_IDENTIFY_GCC(FILE)
138:
139: #define FUNCTION_PROLOGUE(FILE, SIZE) \
140: { register int regno; \
141: register int mask = 0; \
142: extern char call_used_regs[]; \
143: int fsize = ((SIZE) + 3) & -4; \
144: if (frame_pointer_needed) \
145: { if (fsize < 0x8000) \
146: fprintf (FILE, "\tlink fp,#%d\n", -fsize); \
147: else if (TARGET_68020) \
148: fprintf (FILE, "\tlink.l fp,#%d\n", -fsize); \
149: else \
150: fprintf (FILE, "\tlink fp,#0\n\tsub.l #%d,sp\n", fsize);\
151: } \
152: else if (fsize) \
153: { \
154: int amt = fsize + 4; \
155: /* Adding negative number is faster on the 68040. */ \
156: if (fsize + 4 < 0x8000) \
157: asm_fprintf (FILE, "\tadd.w %0I%d,%Rsp\n", - amt); \
158: else \
159: asm_fprintf (FILE, "\tadd.l %0I%d,%Rsp\n", - amt); \
160: } \
161: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
162: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
163: mask |= 1 << (regno - 16); \
164: if (mask != 0) \
165: fprintf (FILE, "\tfmovem.x #0x%x,-(sp)\n", mask & 0xff); \
166: mask = 0; \
167: for (regno = 0; regno < 16; regno++) \
168: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
169: mask |= 1 << (15 - regno); \
170: if (frame_pointer_needed) \
171: mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
172: if (exact_log2 (mask) >= 0) \
173: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
174: else if (mask) fprintf (FILE, "\tmovem.l #0x%x,-(sp)\n", mask); }
175:
176: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
177: fprintf (FILE, "\tmove.l #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
178:
179: #define FUNCTION_EPILOGUE(FILE, SIZE) \
180: { register int regno; \
181: register int mask, fmask; \
182: register int nregs; \
183: int offset, foffset; \
184: extern char call_used_regs[]; \
185: int fsize = ((SIZE) + 3) & -4; \
186: int big = 0; \
187: nregs = 0; fmask = 0; \
188: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
189: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
190: { nregs++; fmask |= 1 << (23 - regno); } \
191: foffset = nregs * 12; \
192: nregs = 0; mask = 0; \
193: if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
194: for (regno = 0; regno < 16; regno++) \
195: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
196: { nregs++; mask |= 1 << regno; } \
197: offset = foffset + nregs * 4; \
198: if (offset + fsize >= 0x8000 \
199: && frame_pointer_needed \
200: && (mask || fmask)) \
201: { fprintf (FILE, "\tmove.l #%d,a0\n", -fsize); \
202: fsize = 0, big = 1; } \
203: if (exact_log2 (mask) >= 0) { \
204: if (big) \
205: fprintf (FILE, "\tmove.l (-%d,fp,a0.l),%s\n", \
206: offset + fsize, reg_names[exact_log2 (mask)]); \
207: else if (! frame_pointer_needed) \
208: fprintf (FILE, "\tmove.l (sp)+,%s\n", \
209: reg_names[exact_log2 (mask)]); \
210: else \
211: fprintf (FILE, "\tmove.l (-%d,fp),%s\n", \
212: offset + fsize, reg_names[exact_log2 (mask)]); } \
213: else if (mask) { \
214: if (big) \
215: fprintf (FILE, "\tmovem.l (-%d,fp,a0.l),#0x%x\n", \
216: offset + fsize, mask); \
217: else if (! frame_pointer_needed) \
218: fprintf (FILE, "\tmovem.l (sp)+,#0x%x\n", mask); \
219: else \
220: fprintf (FILE, "\tmovem.l (-%d,fp),#0x%x\n", \
221: offset + fsize, mask); } \
222: if (fmask) { \
223: if (big) \
224: fprintf (FILE, "\tfmovem.x (-%d,fp,a0.l),#0x%x\n", \
225: foffset + fsize, fmask); \
226: else if (! frame_pointer_needed) \
227: fprintf (FILE, "\tfmovem.x (sp)+,#0x%x\n", fmask); \
228: else \
229: fprintf (FILE, "\tfmovem.x (-%d,fp),#0x%x\n", \
230: foffset + fsize, fmask); } \
231: if (frame_pointer_needed) \
232: fprintf (FILE, "\tunlk fp\n"); \
233: else if (fsize) \
234: { \
235: if (fsize + 4 < 0x8000) \
236: fprintf (FILE, "\tadd.w #%d,sp\n", fsize + 4); \
237: else \
238: fprintf (FILE, "\tadd.l #%d,sp\n", fsize + 4); \
239: } \
240: if (current_function_pops_args) \
241: fprintf (FILE, "\trtd #%d\n", current_function_pops_args); \
242: else fprintf (FILE, "\trts\n"); }
243:
244: /* Difference from m68k.h is in `fp' instead of `a6'. */
245:
246: #define REGISTER_NAMES \
247: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
248: "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
249: "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}
250:
251: /* This is how to output an insn to push a register on the stack.
252: It need not be very fast code. */
253:
254: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
255: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[REGNO])
256:
257: /* This is how to output an insn to pop a register from the stack.
258: It need not be very fast code. */
259:
260: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
261: fprintf (FILE, "\tmove.l (sp)+,%s\n", reg_names[REGNO])
262:
263: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
264: do { char dstr[30]; \
265: REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
266: fprintf (FILE, "\t.double 0d%s\n", dstr); \
267: } while (0)
268:
269: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
270: fprintf (FILE, "\t.space %u\n", (SIZE))
271:
272: #if 0
273: /* The NEWS assembler in version 3.4 complains about fmove.d, but this
274: macro proved not to work right. 3.4 is old, so forget about it. */
275: #define ASM_OUTPUT_OPCODE(FILE, STRING) \
276: { \
277: if (!strncmp (STRING, "fmove.d", 7) \
278: && CONSTANT_P (operands[1])) \
279: { \
280: fprintf (FILE, "fmove.x"); \
281: STRING += 7; \
282: } \
283: }
284: #endif
285:
286: /* Store in OUTPUT a string (made with alloca) containing
287: an assembler-name for a local static variable named NAME.
288: LABELNO is an integer which is different for each call. */
289:
290: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
291: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 13), \
292: sprintf ((OUTPUT), "%s$$$%d", (NAME), (LABELNO)))
293:
294: #define PRINT_OPERAND(FILE, X, CODE) \
295: { if (CODE == '.') fprintf (FILE, "."); \
296: else if (CODE == '#') fprintf (FILE, "#"); \
297: else if (CODE == '-') fprintf (FILE, "-(sp)"); \
298: else if (CODE == '+') fprintf (FILE, "(sp)+"); \
299: else if (CODE == '@') fprintf (FILE, "(sp)"); \
300: else if (CODE == '!') fprintf (FILE, "fpcr"); \
301: else if (CODE == '$') {if (TARGET_68040_ONLY) fprintf (FILE, "s");} \
302: else if (CODE == '&') {if (TARGET_68040_ONLY) fprintf (FILE, "d");} \
303: else if (CODE == '/') \
304: ; \
305: else if (GET_CODE (X) == REG) \
306: fprintf (FILE, "%s", reg_names[REGNO (X)]); \
307: else if (GET_CODE (X) == MEM) \
308: output_address (XEXP (X, 0)); \
309: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
310: { REAL_VALUE_TYPE r; \
311: REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
312: if (CODE == 'f') \
313: { char dstr[30]; \
314: REAL_VALUE_TO_DECIMAL (r, "%.9e", dstr); \
315: fprintf (FILE, "#0f%s", dstr); \
316: } \
317: else \
318: { long l; \
319: REAL_VALUE_TO_TARGET_SINGLE (r, l); \
320: fprintf (FILE, "#0x%x", l); \
321: }} \
322: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == XFmode) \
323: { REAL_VALUE_TYPE r; \
324: REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
325: ASM_OUTPUT_LONG_DOUBLE_OPERAND (FILE, r); } \
326: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode) \
327: { REAL_VALUE_TYPE r; char dstr[30]; \
328: REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
329: REAL_VALUE_TO_DECIMAL (r, "%.20e", dstr ); \
330: fprintf (FILE, "#0d%s", dstr); } \
331: else if (CODE == 'b') output_addr_const (FILE, X); \
332: else { putc ('#', FILE); output_addr_const (FILE, X); }}
333:
334: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
335: { register rtx reg1, reg2, breg, ireg; \
336: register rtx addr = ADDR; \
337: rtx offset; \
338: switch (GET_CODE (addr)) \
339: { \
340: case REG: \
341: fprintf (FILE, "(%s)", reg_names[REGNO (addr)]); \
342: break; \
343: case PRE_DEC: \
344: fprintf (FILE, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]); \
345: break; \
346: case POST_INC: \
347: fprintf (FILE, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]); \
348: break; \
349: case PLUS: \
350: reg1 = 0; reg2 = 0; \
351: ireg = 0; breg = 0; \
352: offset = 0; \
353: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
354: { \
355: offset = XEXP (addr, 0); \
356: addr = XEXP (addr, 1); \
357: } \
358: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
359: { \
360: offset = XEXP (addr, 1); \
361: addr = XEXP (addr, 0); \
362: } \
363: if (GET_CODE (addr) != PLUS) ; \
364: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
365: { \
366: reg1 = XEXP (addr, 0); \
367: addr = XEXP (addr, 1); \
368: } \
369: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
370: { \
371: reg1 = XEXP (addr, 1); \
372: addr = XEXP (addr, 0); \
373: } \
374: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
375: { \
376: reg1 = XEXP (addr, 0); \
377: addr = XEXP (addr, 1); \
378: } \
379: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
380: { \
381: reg1 = XEXP (addr, 1); \
382: addr = XEXP (addr, 0); \
383: } \
384: else if (GET_CODE (XEXP (addr, 0)) == REG) \
385: { \
386: reg1 = XEXP (addr, 0); \
387: addr = XEXP (addr, 1); \
388: } \
389: else if (GET_CODE (XEXP (addr, 1)) == REG) \
390: { \
391: reg1 = XEXP (addr, 1); \
392: addr = XEXP (addr, 0); \
393: } \
394: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
395: || GET_CODE (addr) == SIGN_EXTEND) \
396: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
397: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
398: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
399: || GET_CODE (reg1) == MULT)) \
400: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
401: { breg = reg2; ireg = reg1; } \
402: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
403: { breg = reg1; ireg = reg2; } \
404: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
405: { int scale = 1; \
406: if (GET_CODE (ireg) == MULT) \
407: { scale = INTVAL (XEXP (ireg, 1)); \
408: ireg = XEXP (ireg, 0); } \
409: if (GET_CODE (ireg) == SIGN_EXTEND) \
410: fprintf (FILE, "(L%d.b,pc,%s.w", \
411: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
412: reg_names[REGNO (XEXP (ireg, 0))]); \
413: else \
414: fprintf (FILE, "(L%d.b,pc,%s.l", \
415: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
416: reg_names[REGNO (ireg)]); \
417: if (scale != 1) fprintf (FILE, "*%d", scale); \
418: putc (')', FILE); \
419: break; } \
420: if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF) \
421: { fprintf (FILE, "(L%d.b,pc,%s.l", \
422: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
423: reg_names[REGNO (breg)]); \
424: putc (')', FILE); \
425: break; } \
426: if (ireg != 0 || breg != 0) \
427: { int scale = 1; \
428: if (breg == 0) \
429: abort (); \
430: if (addr && GET_CODE (addr) == LABEL_REF) abort (); \
431: fprintf (FILE, "("); \
432: if (addr != 0) { \
433: output_addr_const (FILE, addr); \
434: putc (',', FILE); } \
435: fprintf (FILE, "%s", reg_names[REGNO (breg)]); \
436: if (ireg != 0) \
437: putc (',', FILE); \
438: if (ireg != 0 && GET_CODE (ireg) == MULT) \
439: { scale = INTVAL (XEXP (ireg, 1)); \
440: ireg = XEXP (ireg, 0); } \
441: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
442: fprintf (FILE, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]); \
443: else if (ireg != 0) \
444: fprintf (FILE, "%s.l", reg_names[REGNO (ireg)]); \
445: if (scale != 1) fprintf (FILE, "*%d", scale); \
446: putc (')', FILE); \
447: break; \
448: } \
449: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
450: { fprintf (FILE, "(L%d.b,pc,%s.l)", \
451: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
452: reg_names[REGNO (reg1)]); \
453: break; } \
454: default: \
455: if (GET_CODE (addr) == CONST_INT \
456: && INTVAL (addr) < 0x8000 \
457: && INTVAL (addr) >= -0x8000) \
458: fprintf (FILE, "%d.w", INTVAL (addr)); \
459: else \
460: output_addr_const (FILE, addr); \
461: }}
462:
463: #else /* Using GAS, which uses the MIT assembler syntax, like a Sun. */
464:
465: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
466: fprintf (FILE, "\tmovl #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
467:
468: #endif /* MOTOROLA */
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