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1.1 root 1: /* Definitions of target machine for GNU compiler. SONY NEWS version.
2: Copyright (C) 1987 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
1.1.1.7 ! root 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 1, or (at your option)
! 9: any later version.
! 10:
1.1 root 11: GNU CC is distributed in the hope that it will be useful,
1.1.1.7 ! root 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. */
1.1 root 19:
20: /* Use the GNU Assembler, because the system's assembler
21: has no way to assemble the difference of two labels
22: for the displacement in a switch-dispatch instruction. */
23:
24: #define USE_GAS
25:
26: #ifndef USE_GAS
27: /* This controls conditionals in tm-m68k.h. */
28: #define MOTOROLA
29: #endif
30:
31: #include "tm-m68k.h"
32:
33: /* See tm-m68k.h. 7 means 68020 with 68881. */
34:
35: #define TARGET_DEFAULT 7
36:
1.1.1.5 root 37: /* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
1.1.1.2 root 38: This will control the use of inline 68881 insns in certain macros. */
39:
1.1.1.5 root 40: #define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__}"
1.1.1.2 root 41:
1.1 root 42: /* Names to predefine in the preprocessor for this target machine. */
43:
1.1.1.3 root 44: #define CPP_PREDEFINES "-Dunix -Dmc68020 -Dnews800 -Dsony -Dsony_news"
1.1 root 45:
1.1.1.2 root 46: /* This is BSD, so it wants DBX format. */
47:
48: #define DBX_DEBUGGING_INFO
49:
1.1 root 50: /* Override parts of tm-m68k.h to fit Sony's assembler syntax. */
51:
52: #undef POINTER_BOUNDARY
53: #undef BIGGEST_ALIGNMENT
54: #undef CALL_USED_REGISTERS
55: #undef FUNCTION_VALUE
56: #undef LIBCALL_VALUE
57: #undef FUNCTION_PROFILER
58:
59: #ifdef MOTOROLA
60: #undef FUNCTION_PROLOGUE
61: #undef FUNCTION_EPILOGUE
62: #undef REGISTER_NAMES
1.1.1.4 root 63: #undef ASM_OUTPUT_REG_PUSH
64: #undef ASM_OUTPUT_REG_POP
1.1 root 65: #undef ASM_OUTPUT_DOUBLE
66: #undef ASM_OUTPUT_SKIP
67: #undef PRINT_OPERAND
68: #undef PRINT_OPERAND_ADDRESS
69: #endif
70:
71: #undef ASM_OUTPUT_ALIGN
72:
73: /* Allocation boundary (in *bits*) for storing pointers in memory. */
74: #define POINTER_BOUNDARY 32
75:
76: /* There is no point aligning anything to a rounder boundary than this. */
77: #define BIGGEST_ALIGNMENT 32
1.1.1.3 root 78:
79: /* A bitfield declared as `int' forces `int' alignment for the struct. */
80: #define PCC_BITFIELD_TYPE_MATTERS
1.1 root 81:
82: /* NEWS makes d2, d3, fp2 and fp3 unsaved registers, unlike the Sun system. */
83:
84: #define CALL_USED_REGISTERS \
85: {1, 1, 1, 1, 0, 0, 0, 0, \
86: 1, 1, 0, 0, 0, 0, 0, 1, \
87: 1, 1, 1, 1, 0, 0, 0, 0}
88:
89: /* NEWS returns floats and doubles in fp0, not d0/d1. */
90:
91: #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
92:
93: #define LIBCALL_VALUE(MODE) \
94: gen_rtx (REG, (MODE), ((TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0))
95:
96: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
97: fprintf (FILE, "\t.align %d\n", (LOG))
98:
99: #ifdef MOTOROLA
100:
101: #define FUNCTION_PROLOGUE(FILE, SIZE) \
102: { register int regno; \
103: register int mask = 0; \
104: static char *reg_names[] = REGISTER_NAMES; \
105: extern char call_used_regs[]; \
106: int fsize = (SIZE); \
107: if (frame_pointer_needed) \
108: { if (TARGET_68020 || fsize < 0x10000) \
109: fprintf (FILE, "\tlink fp,#%d\n", -fsize); \
110: else \
111: fprintf (FILE, "\tlink fp,#0\n\tsub.l #%d,sp\n", fsize); } \
112: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
113: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
114: mask |= 1 << (regno - 16); \
115: if (mask != 0) \
116: fprintf (FILE, "\tfmovem.x #0x%x,-(sp)\n", mask & 0xff); \
117: mask = 0; \
118: for (regno = 0; regno < 16; regno++) \
119: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
120: mask |= 1 << (15 - regno); \
121: if (frame_pointer_needed) \
122: mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
123: if (exact_log2 (mask) >= 0) \
124: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
125: else if (mask) fprintf (FILE, "\tmovem.l #0x%x,-(sp)\n", mask); }
126:
127: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
128: fprintf (FILE, "\tmove.l #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
129:
130: #define FUNCTION_EPILOGUE(FILE, SIZE) \
131: { register int regno; \
132: register int mask, fmask; \
133: register int nregs; \
134: int offset, foffset; \
135: extern char call_used_regs[]; \
136: static char *reg_names[] = REGISTER_NAMES; \
137: extern int current_function_pops_args; \
138: extern int current_function_args_size; \
139: int fsize = (SIZE); \
140: int big = 0; \
141: nregs = 0; fmask = 0; \
142: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
143: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
144: { nregs++; fmask |= 1 << (23 - regno); } \
145: foffset = nregs * 12; \
146: nregs = 0; mask = 0; \
147: if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
148: for (regno = 0; regno < 16; regno++) \
149: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
150: { nregs++; mask |= 1 << regno; } \
151: offset = foffset + nregs * 4; \
152: if (offset + fsize >= 0x8000 && frame_pointer_needed) \
153: { fprintf (FILE, "\tmove.l #%d,a0\n", -fsize); \
154: fsize = 0, big = 1; } \
155: if (exact_log2 (mask) >= 0) { \
156: if (big) \
157: fprintf (FILE, "\tmove.l (-%d,fp,a0.l),%s\n", \
158: offset + fsize, reg_names[exact_log2 (mask)]); \
159: else if (! frame_pointer_needed) \
160: fprintf (FILE, "\tmove.l (sp)+,%s\n", \
161: reg_names[exact_log2 (mask)]); \
162: else \
163: fprintf (FILE, "\tmove.l (-%d,fp),%s\n", \
164: offset + fsize, reg_names[exact_log2 (mask)]); } \
165: else if (mask) { \
166: if (big) \
167: fprintf (FILE, "\tmovem.l (-%d,fp,a0.l),#0x%x\n", \
168: offset + fsize, mask); \
169: else if (! frame_pointer_needed) \
170: fprintf (FILE, "\tmovem.l (sp)+,#0x%x\n", mask); \
171: else \
172: fprintf (FILE, "\tmovem.l (-%d,fp),#0x%x\n", \
173: offset + fsize, mask); } \
174: if (fmask) { \
175: if (big) \
176: fprintf (FILE, "\tfmovem.x (-%d,fp,a0.l),#0x%x\n", \
177: foffset + fsize, fmask); \
178: else if (! frame_pointer_needed) \
179: fprintf (FILE, "\tfmovem.x (sp)+,#0x%x\n", fmask); \
180: else \
181: fprintf (FILE, "\tfmovem.x (-%d,fp),#0x%x\n", \
182: foffset + fsize, fmask); } \
183: if (frame_pointer_needed) \
184: fprintf (FILE, "\tunlk fp\n"); \
185: if (current_function_pops_args && current_function_args_size) \
186: fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
187: else fprintf (FILE, "\trts\n"); }
188:
189: /* Difference from tm-m68k.h is in `fp' instead of `a6'. */
190:
191: #define REGISTER_NAMES \
192: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
193: "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
194: "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}
1.1.1.4 root 195:
196: /* This is how to output an insn to push a register on the stack.
197: It need not be very fast code. */
198:
199: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
200: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[REGNO])
201:
202: /* This is how to output an insn to pop a register from the stack.
203: It need not be very fast code. */
204:
205: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \
206: fprintf (FILE, "\tmove.l (sp)+,%s\n", reg_names[REGNO])
1.1 root 207:
208: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
209: fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))
210:
211: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
212: fprintf (FILE, "\t.space %d\n", (SIZE))
213:
214: #define PRINT_OPERAND(FILE, X, CODE) \
215: { if (CODE == '.') fprintf (FILE, "."); \
216: else if (CODE == '#') fprintf (FILE, "#"); \
217: else if (CODE == '-') fprintf (FILE, "-(sp)"); \
218: else if (CODE == '+') fprintf (FILE, "(sp)+"); \
219: else if (CODE == 's') fprintf (FILE, "(sp)"); \
220: else if (CODE == '!') fprintf (FILE, "ccr"); \
221: else if (GET_CODE (X) == REG) \
222: fprintf (FILE, "%s", reg_name [REGNO (X)]); \
223: else if (GET_CODE (X) == MEM) \
224: output_address (XEXP (X, 0)); \
225: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
226: { union { double d; int i[2]; } u; \
227: union { float f; int i; } u1; \
1.1.1.6 root 228: u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
1.1 root 229: u1.f = u.d; \
230: if (CODE == 'f') \
231: fprintf (FILE, "#0f%.9e", u1.f); \
232: else \
233: fprintf (FILE, "#0x%x", u1.i); } \
1.1.1.4 root 234: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode) \
1.1 root 235: { union { double d; int i[2]; } u; \
1.1.1.6 root 236: u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \
1.1 root 237: fprintf (FILE, "#0d%.20e", u.d); } \
238: else if (CODE == 'b') output_addr_const (FILE, X); \
239: else { putc ('#', FILE); output_addr_const (FILE, X); }}
240:
241: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
242: { register rtx reg1, reg2, breg, ireg; \
243: register rtx addr = ADDR; \
244: rtx offset; \
245: switch (GET_CODE (addr)) \
246: { \
247: case REG: \
248: fprintf (FILE, "(%s)", reg_name [REGNO (addr)]); \
249: break; \
250: case PRE_DEC: \
251: fprintf (FILE, "-(%s)", reg_name [REGNO (XEXP (addr, 0))]); \
252: break; \
253: case POST_INC: \
254: fprintf (FILE, "(%s)+", reg_name [REGNO (XEXP (addr, 0))]); \
255: break; \
256: case PLUS: \
257: reg1 = 0; reg2 = 0; \
258: ireg = 0; breg = 0; \
259: offset = 0; \
260: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
261: { \
262: offset = XEXP (addr, 0); \
263: addr = XEXP (addr, 1); \
264: } \
265: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
266: { \
267: offset = XEXP (addr, 1); \
268: addr = XEXP (addr, 0); \
269: } \
270: if (GET_CODE (addr) != PLUS) ; \
271: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
272: { \
273: reg1 = XEXP (addr, 0); \
274: addr = XEXP (addr, 1); \
275: } \
276: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
277: { \
278: reg1 = XEXP (addr, 1); \
279: addr = XEXP (addr, 0); \
280: } \
281: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
282: { \
283: reg1 = XEXP (addr, 0); \
284: addr = XEXP (addr, 1); \
285: } \
286: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
287: { \
288: reg1 = XEXP (addr, 1); \
289: addr = XEXP (addr, 0); \
290: } \
291: else if (GET_CODE (XEXP (addr, 0)) == REG) \
292: { \
293: reg1 = XEXP (addr, 0); \
294: addr = XEXP (addr, 1); \
295: } \
296: else if (GET_CODE (XEXP (addr, 1)) == REG) \
297: { \
298: reg1 = XEXP (addr, 1); \
299: addr = XEXP (addr, 0); \
300: } \
301: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
302: || GET_CODE (addr) == SIGN_EXTEND) \
303: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
304: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
305: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
306: || GET_CODE (reg1) == MULT)) \
307: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
308: { breg = reg2; ireg = reg1; } \
309: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
310: { breg = reg1; ireg = reg2; } \
311: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
312: { int scale = 1; \
313: if (GET_CODE (ireg) == MULT) \
314: { scale = INTVAL (XEXP (ireg, 1)); \
315: ireg = XEXP (ireg, 0); } \
316: if (GET_CODE (ireg) == SIGN_EXTEND) \
317: fprintf (FILE, "(L%d-LI%d.b,pc,%s.w", \
318: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
319: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
320: reg_name[REGNO (XEXP (ireg, 0))]); \
321: else \
322: fprintf (FILE, "(L%d-LI%d.b,pc,%s.l", \
323: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
324: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
325: reg_name[REGNO (ireg)]); \
326: if (scale != 1) fprintf (FILE, "*%d", scale); \
327: putc (')', FILE); \
328: break; } \
329: if (ireg != 0 || breg != 0) \
330: { int scale = 1; \
331: if (breg == 0) \
332: abort (); \
333: fprintf (FILE, "("); \
334: if (addr != 0) { \
335: output_addr_const (FILE, addr); \
336: putc (',', FILE); } \
337: fprintf (FILE, "%s", reg_name[REGNO (breg)]); \
338: if (ireg != 0) \
339: putc (',', FILE); \
340: if (ireg != 0 && GET_CODE (ireg) == MULT) \
341: { scale = INTVAL (XEXP (ireg, 1)); \
342: ireg = XEXP (ireg, 0); } \
343: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
344: fprintf (FILE, "%s.w", reg_name[REGNO (XEXP (ireg, 0))]); \
345: else if (ireg != 0) \
346: fprintf (FILE, "%s.l", reg_name[REGNO (ireg)]); \
347: if (scale != 1) fprintf (FILE, "*%d", scale); \
348: putc (')', FILE); \
349: break; \
350: } \
351: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
352: { fprintf (FILE, "(L%d-LI%d.b,pc,%s:l)", \
353: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
354: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
355: reg_name[REGNO (reg1)]); \
356: break; } \
357: default: \
358: if (GET_CODE (addr) == CONST_INT \
359: && INTVAL (addr) < 0x8000 \
360: && INTVAL (addr) >= -0x8000) \
361: fprintf (FILE, "%d.w", INTVAL (addr)); \
362: else \
363: output_addr_const (FILE, addr); \
364: }}
365:
366: #else /* Using GAS, which uses the MIT assembler syntax, like a Sun. */
367:
368: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
369: fprintf (FILE, "\tmovl #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
370:
371: #endif /* MOTOROLA */
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