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