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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:
38: /* Names to predefine in the preprocessor for this target machine. */
39:
40: #define CPP_PREDEFINES "-Dunix -Dmc68020 -Dnews800"
41:
42: /* Override parts of tm-m68k.h to fit Sony's assembler syntax. */
43:
44: #undef POINTER_BOUNDARY
45: #undef BIGGEST_ALIGNMENT
46: #undef CALL_USED_REGISTERS
47: #undef FUNCTION_VALUE
48: #undef LIBCALL_VALUE
49: #undef FUNCTION_PROFILER
50:
51: #ifdef MOTOROLA
52: #undef FUNCTION_PROLOGUE
53: #undef FUNCTION_EPILOGUE
54: #undef REGISTER_NAMES
55: #undef ASM_OUTPUT_DOUBLE
56: #undef ASM_OUTPUT_SKIP
57: #undef PRINT_OPERAND
58: #undef PRINT_OPERAND_ADDRESS
59: #endif
60:
61: #undef ASM_OUTPUT_ALIGN
62:
63: /* Allocation boundary (in *bits*) for storing pointers in memory. */
64: #define POINTER_BOUNDARY 32
65:
66: /* There is no point aligning anything to a rounder boundary than this. */
67: #define BIGGEST_ALIGNMENT 32
68:
69: /* NEWS makes d2, d3, fp2 and fp3 unsaved registers, unlike the Sun system. */
70:
71: #define CALL_USED_REGISTERS \
72: {1, 1, 1, 1, 0, 0, 0, 0, \
73: 1, 1, 0, 0, 0, 0, 0, 1, \
74: 1, 1, 1, 1, 0, 0, 0, 0}
75:
76: /* NEWS returns floats and doubles in fp0, not d0/d1. */
77:
78: #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
79:
80: #define LIBCALL_VALUE(MODE) \
81: gen_rtx (REG, (MODE), ((TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0))
82:
83: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
84: fprintf (FILE, "\t.align %d\n", (LOG))
85:
86: #ifdef MOTOROLA
87:
88: #define FUNCTION_PROLOGUE(FILE, SIZE) \
89: { register int regno; \
90: register int mask = 0; \
91: static char *reg_names[] = REGISTER_NAMES; \
92: extern char call_used_regs[]; \
93: int fsize = (SIZE); \
94: if (frame_pointer_needed) \
95: { if (TARGET_68020 || fsize < 0x10000) \
96: fprintf (FILE, "\tlink fp,#%d\n", -fsize); \
97: else \
98: fprintf (FILE, "\tlink fp,#0\n\tsub.l #%d,sp\n", fsize); } \
99: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
100: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
101: mask |= 1 << (regno - 16); \
102: if (mask != 0) \
103: fprintf (FILE, "\tfmovem.x #0x%x,-(sp)\n", mask & 0xff); \
104: mask = 0; \
105: for (regno = 0; regno < 16; regno++) \
106: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
107: mask |= 1 << (15 - regno); \
108: if (frame_pointer_needed) \
109: mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
110: if (exact_log2 (mask) >= 0) \
111: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
112: else if (mask) fprintf (FILE, "\tmovem.l #0x%x,-(sp)\n", mask); }
113:
114: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
115: fprintf (FILE, "\tmove.l #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
116:
117: #define FUNCTION_EPILOGUE(FILE, SIZE) \
118: { register int regno; \
119: register int mask, fmask; \
120: register int nregs; \
121: int offset, foffset; \
122: extern char call_used_regs[]; \
123: static char *reg_names[] = REGISTER_NAMES; \
124: extern int current_function_pops_args; \
125: extern int current_function_args_size; \
126: int fsize = (SIZE); \
127: int big = 0; \
128: nregs = 0; fmask = 0; \
129: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
130: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
131: { nregs++; fmask |= 1 << (23 - regno); } \
132: foffset = nregs * 12; \
133: nregs = 0; mask = 0; \
134: if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
135: for (regno = 0; regno < 16; regno++) \
136: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
137: { nregs++; mask |= 1 << regno; } \
138: offset = foffset + nregs * 4; \
139: if (offset + fsize >= 0x8000 && frame_pointer_needed) \
140: { fprintf (FILE, "\tmove.l #%d,a0\n", -fsize); \
141: fsize = 0, big = 1; } \
142: if (exact_log2 (mask) >= 0) { \
143: if (big) \
144: fprintf (FILE, "\tmove.l (-%d,fp,a0.l),%s\n", \
145: offset + fsize, reg_names[exact_log2 (mask)]); \
146: else if (! frame_pointer_needed) \
147: fprintf (FILE, "\tmove.l (sp)+,%s\n", \
148: reg_names[exact_log2 (mask)]); \
149: else \
150: fprintf (FILE, "\tmove.l (-%d,fp),%s\n", \
151: offset + fsize, reg_names[exact_log2 (mask)]); } \
152: else if (mask) { \
153: if (big) \
154: fprintf (FILE, "\tmovem.l (-%d,fp,a0.l),#0x%x\n", \
155: offset + fsize, mask); \
156: else if (! frame_pointer_needed) \
157: fprintf (FILE, "\tmovem.l (sp)+,#0x%x\n", mask); \
158: else \
159: fprintf (FILE, "\tmovem.l (-%d,fp),#0x%x\n", \
160: offset + fsize, mask); } \
161: if (fmask) { \
162: if (big) \
163: fprintf (FILE, "\tfmovem.x (-%d,fp,a0.l),#0x%x\n", \
164: foffset + fsize, fmask); \
165: else if (! frame_pointer_needed) \
166: fprintf (FILE, "\tfmovem.x (sp)+,#0x%x\n", fmask); \
167: else \
168: fprintf (FILE, "\tfmovem.x (-%d,fp),#0x%x\n", \
169: foffset + fsize, fmask); } \
170: if (frame_pointer_needed) \
171: fprintf (FILE, "\tunlk fp\n"); \
172: if (current_function_pops_args && current_function_args_size) \
173: fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
174: else fprintf (FILE, "\trts\n"); }
175:
176: /* Difference from tm-m68k.h is in `fp' instead of `a6'. */
177:
178: #define REGISTER_NAMES \
179: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
180: "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
181: "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}
182:
183: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
184: fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))
185:
186: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
187: fprintf (FILE, "\t.space %d\n", (SIZE))
188:
189: #define PRINT_OPERAND(FILE, X, CODE) \
190: { if (CODE == '.') fprintf (FILE, "."); \
191: else if (CODE == '#') fprintf (FILE, "#"); \
192: else if (CODE == '-') fprintf (FILE, "-(sp)"); \
193: else if (CODE == '+') fprintf (FILE, "(sp)+"); \
194: else if (CODE == 's') fprintf (FILE, "(sp)"); \
195: else if (CODE == '!') fprintf (FILE, "ccr"); \
196: else if (GET_CODE (X) == REG) \
197: fprintf (FILE, "%s", reg_name [REGNO (X)]); \
198: else if (GET_CODE (X) == MEM) \
199: output_address (XEXP (X, 0)); \
200: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
201: { union { double d; int i[2]; } u; \
202: union { float f; int i; } u1; \
203: u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1); \
204: u1.f = u.d; \
205: if (CODE == 'f') \
206: fprintf (FILE, "#0f%.9e", u1.f); \
207: else \
208: fprintf (FILE, "#0x%x", u1.i); } \
209: else if (GET_CODE (X) == CONST_DOUBLE) \
210: { union { double d; int i[2]; } u; \
211: u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1); \
212: fprintf (FILE, "#0d%.20e", u.d); } \
213: else if (CODE == 'b') output_addr_const (FILE, X); \
214: else { putc ('#', FILE); output_addr_const (FILE, X); }}
215:
216: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
217: { register rtx reg1, reg2, breg, ireg; \
218: register rtx addr = ADDR; \
219: rtx offset; \
220: switch (GET_CODE (addr)) \
221: { \
222: case REG: \
223: fprintf (FILE, "(%s)", reg_name [REGNO (addr)]); \
224: break; \
225: case PRE_DEC: \
226: fprintf (FILE, "-(%s)", reg_name [REGNO (XEXP (addr, 0))]); \
227: break; \
228: case POST_INC: \
229: fprintf (FILE, "(%s)+", reg_name [REGNO (XEXP (addr, 0))]); \
230: break; \
231: case PLUS: \
232: reg1 = 0; reg2 = 0; \
233: ireg = 0; breg = 0; \
234: offset = 0; \
235: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
236: { \
237: offset = XEXP (addr, 0); \
238: addr = XEXP (addr, 1); \
239: } \
240: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
241: { \
242: offset = XEXP (addr, 1); \
243: addr = XEXP (addr, 0); \
244: } \
245: if (GET_CODE (addr) != PLUS) ; \
246: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
247: { \
248: reg1 = XEXP (addr, 0); \
249: addr = XEXP (addr, 1); \
250: } \
251: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
252: { \
253: reg1 = XEXP (addr, 1); \
254: addr = XEXP (addr, 0); \
255: } \
256: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
257: { \
258: reg1 = XEXP (addr, 0); \
259: addr = XEXP (addr, 1); \
260: } \
261: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
262: { \
263: reg1 = XEXP (addr, 1); \
264: addr = XEXP (addr, 0); \
265: } \
266: else if (GET_CODE (XEXP (addr, 0)) == REG) \
267: { \
268: reg1 = XEXP (addr, 0); \
269: addr = XEXP (addr, 1); \
270: } \
271: else if (GET_CODE (XEXP (addr, 1)) == REG) \
272: { \
273: reg1 = XEXP (addr, 1); \
274: addr = XEXP (addr, 0); \
275: } \
276: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
277: || GET_CODE (addr) == SIGN_EXTEND) \
278: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
279: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
280: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
281: || GET_CODE (reg1) == MULT)) \
282: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
283: { breg = reg2; ireg = reg1; } \
284: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
285: { breg = reg1; ireg = reg2; } \
286: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
287: { int scale = 1; \
288: if (GET_CODE (ireg) == MULT) \
289: { scale = INTVAL (XEXP (ireg, 1)); \
290: ireg = XEXP (ireg, 0); } \
291: if (GET_CODE (ireg) == SIGN_EXTEND) \
292: fprintf (FILE, "(L%d-LI%d.b,pc,%s.w", \
293: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
294: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
295: reg_name[REGNO (XEXP (ireg, 0))]); \
296: else \
297: fprintf (FILE, "(L%d-LI%d.b,pc,%s.l", \
298: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
299: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
300: reg_name[REGNO (ireg)]); \
301: if (scale != 1) fprintf (FILE, "*%d", scale); \
302: putc (')', FILE); \
303: break; } \
304: if (ireg != 0 || breg != 0) \
305: { int scale = 1; \
306: if (breg == 0) \
307: abort (); \
308: fprintf (FILE, "("); \
309: if (addr != 0) { \
310: output_addr_const (FILE, addr); \
311: putc (',', FILE); } \
312: fprintf (FILE, "%s", reg_name[REGNO (breg)]); \
313: if (ireg != 0) \
314: putc (',', FILE); \
315: if (ireg != 0 && GET_CODE (ireg) == MULT) \
316: { scale = INTVAL (XEXP (ireg, 1)); \
317: ireg = XEXP (ireg, 0); } \
318: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
319: fprintf (FILE, "%s.w", reg_name[REGNO (XEXP (ireg, 0))]); \
320: else if (ireg != 0) \
321: fprintf (FILE, "%s.l", reg_name[REGNO (ireg)]); \
322: if (scale != 1) fprintf (FILE, "*%d", scale); \
323: putc (')', FILE); \
324: break; \
325: } \
326: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
327: { fprintf (FILE, "(L%d-LI%d.b,pc,%s:l)", \
328: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
329: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
330: reg_name[REGNO (reg1)]); \
331: break; } \
332: default: \
333: if (GET_CODE (addr) == CONST_INT \
334: && INTVAL (addr) < 0x8000 \
335: && INTVAL (addr) >= -0x8000) \
336: fprintf (FILE, "%d.w", INTVAL (addr)); \
337: else \
338: output_addr_const (FILE, addr); \
339: }}
340:
341: #else /* Using GAS, which uses the MIT assembler syntax, like a Sun. */
342:
343: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
344: fprintf (FILE, "\tmovl #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
345:
346: #endif /* MOTOROLA */
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