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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:
1.1.1.2 root 38: /* Define __HAVE_FPU__ in preprocessor, unless -msoft-float is specified.
39: This will control the use of inline 68881 insns in certain macros. */
40:
41: #define CPP_SPEC "%{!msoft-float:-D__HAVE_FPU__}"
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
64: #undef ASM_OUTPUT_DOUBLE
65: #undef ASM_OUTPUT_SKIP
66: #undef PRINT_OPERAND
67: #undef PRINT_OPERAND_ADDRESS
68: #endif
69:
70: #undef ASM_OUTPUT_ALIGN
71:
72: /* Allocation boundary (in *bits*) for storing pointers in memory. */
73: #define POINTER_BOUNDARY 32
74:
75: /* There is no point aligning anything to a rounder boundary than this. */
76: #define BIGGEST_ALIGNMENT 32
1.1.1.3 ! root 77:
! 78: /* A bitfield declared as `int' forces `int' alignment for the struct. */
! 79: #define PCC_BITFIELD_TYPE_MATTERS
1.1 root 80:
81: /* NEWS makes d2, d3, fp2 and fp3 unsaved registers, unlike the Sun system. */
82:
83: #define CALL_USED_REGISTERS \
84: {1, 1, 1, 1, 0, 0, 0, 0, \
85: 1, 1, 0, 0, 0, 0, 0, 1, \
86: 1, 1, 1, 1, 0, 0, 0, 0}
87:
88: /* NEWS returns floats and doubles in fp0, not d0/d1. */
89:
90: #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
91:
92: #define LIBCALL_VALUE(MODE) \
93: gen_rtx (REG, (MODE), ((TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0))
94:
95: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
96: fprintf (FILE, "\t.align %d\n", (LOG))
97:
98: #ifdef MOTOROLA
99:
100: #define FUNCTION_PROLOGUE(FILE, SIZE) \
101: { register int regno; \
102: register int mask = 0; \
103: static char *reg_names[] = REGISTER_NAMES; \
104: extern char call_used_regs[]; \
105: int fsize = (SIZE); \
106: if (frame_pointer_needed) \
107: { if (TARGET_68020 || fsize < 0x10000) \
108: fprintf (FILE, "\tlink fp,#%d\n", -fsize); \
109: else \
110: fprintf (FILE, "\tlink fp,#0\n\tsub.l #%d,sp\n", fsize); } \
111: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
112: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
113: mask |= 1 << (regno - 16); \
114: if (mask != 0) \
115: fprintf (FILE, "\tfmovem.x #0x%x,-(sp)\n", mask & 0xff); \
116: mask = 0; \
117: for (regno = 0; regno < 16; regno++) \
118: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
119: mask |= 1 << (15 - regno); \
120: if (frame_pointer_needed) \
121: mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
122: if (exact_log2 (mask) >= 0) \
123: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
124: else if (mask) fprintf (FILE, "\tmovem.l #0x%x,-(sp)\n", mask); }
125:
126: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
127: fprintf (FILE, "\tmove.l #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
128:
129: #define FUNCTION_EPILOGUE(FILE, SIZE) \
130: { register int regno; \
131: register int mask, fmask; \
132: register int nregs; \
133: int offset, foffset; \
134: extern char call_used_regs[]; \
135: static char *reg_names[] = REGISTER_NAMES; \
136: extern int current_function_pops_args; \
137: extern int current_function_args_size; \
138: int fsize = (SIZE); \
139: int big = 0; \
140: nregs = 0; fmask = 0; \
141: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
142: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
143: { nregs++; fmask |= 1 << (23 - regno); } \
144: foffset = nregs * 12; \
145: nregs = 0; mask = 0; \
146: if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
147: for (regno = 0; regno < 16; regno++) \
148: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
149: { nregs++; mask |= 1 << regno; } \
150: offset = foffset + nregs * 4; \
151: if (offset + fsize >= 0x8000 && frame_pointer_needed) \
152: { fprintf (FILE, "\tmove.l #%d,a0\n", -fsize); \
153: fsize = 0, big = 1; } \
154: if (exact_log2 (mask) >= 0) { \
155: if (big) \
156: fprintf (FILE, "\tmove.l (-%d,fp,a0.l),%s\n", \
157: offset + fsize, reg_names[exact_log2 (mask)]); \
158: else if (! frame_pointer_needed) \
159: fprintf (FILE, "\tmove.l (sp)+,%s\n", \
160: reg_names[exact_log2 (mask)]); \
161: else \
162: fprintf (FILE, "\tmove.l (-%d,fp),%s\n", \
163: offset + fsize, reg_names[exact_log2 (mask)]); } \
164: else if (mask) { \
165: if (big) \
166: fprintf (FILE, "\tmovem.l (-%d,fp,a0.l),#0x%x\n", \
167: offset + fsize, mask); \
168: else if (! frame_pointer_needed) \
169: fprintf (FILE, "\tmovem.l (sp)+,#0x%x\n", mask); \
170: else \
171: fprintf (FILE, "\tmovem.l (-%d,fp),#0x%x\n", \
172: offset + fsize, mask); } \
173: if (fmask) { \
174: if (big) \
175: fprintf (FILE, "\tfmovem.x (-%d,fp,a0.l),#0x%x\n", \
176: foffset + fsize, fmask); \
177: else if (! frame_pointer_needed) \
178: fprintf (FILE, "\tfmovem.x (sp)+,#0x%x\n", fmask); \
179: else \
180: fprintf (FILE, "\tfmovem.x (-%d,fp),#0x%x\n", \
181: foffset + fsize, fmask); } \
182: if (frame_pointer_needed) \
183: fprintf (FILE, "\tunlk fp\n"); \
184: if (current_function_pops_args && current_function_args_size) \
185: fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
186: else fprintf (FILE, "\trts\n"); }
187:
188: /* Difference from tm-m68k.h is in `fp' instead of `a6'. */
189:
190: #define REGISTER_NAMES \
191: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
192: "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
193: "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}
194:
195: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
196: fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))
197:
198: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
199: fprintf (FILE, "\t.space %d\n", (SIZE))
200:
201: #define PRINT_OPERAND(FILE, X, CODE) \
202: { if (CODE == '.') fprintf (FILE, "."); \
203: else if (CODE == '#') fprintf (FILE, "#"); \
204: else if (CODE == '-') fprintf (FILE, "-(sp)"); \
205: else if (CODE == '+') fprintf (FILE, "(sp)+"); \
206: else if (CODE == 's') fprintf (FILE, "(sp)"); \
207: else if (CODE == '!') fprintf (FILE, "ccr"); \
208: else if (GET_CODE (X) == REG) \
209: fprintf (FILE, "%s", reg_name [REGNO (X)]); \
210: else if (GET_CODE (X) == MEM) \
211: output_address (XEXP (X, 0)); \
212: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
213: { union { double d; int i[2]; } u; \
214: union { float f; int i; } u1; \
215: u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1); \
216: u1.f = u.d; \
217: if (CODE == 'f') \
218: fprintf (FILE, "#0f%.9e", u1.f); \
219: else \
220: fprintf (FILE, "#0x%x", u1.i); } \
221: else if (GET_CODE (X) == CONST_DOUBLE) \
222: { union { double d; int i[2]; } u; \
223: u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1); \
224: fprintf (FILE, "#0d%.20e", u.d); } \
225: else if (CODE == 'b') output_addr_const (FILE, X); \
226: else { putc ('#', FILE); output_addr_const (FILE, X); }}
227:
228: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
229: { register rtx reg1, reg2, breg, ireg; \
230: register rtx addr = ADDR; \
231: rtx offset; \
232: switch (GET_CODE (addr)) \
233: { \
234: case REG: \
235: fprintf (FILE, "(%s)", reg_name [REGNO (addr)]); \
236: break; \
237: case PRE_DEC: \
238: fprintf (FILE, "-(%s)", reg_name [REGNO (XEXP (addr, 0))]); \
239: break; \
240: case POST_INC: \
241: fprintf (FILE, "(%s)+", reg_name [REGNO (XEXP (addr, 0))]); \
242: break; \
243: case PLUS: \
244: reg1 = 0; reg2 = 0; \
245: ireg = 0; breg = 0; \
246: offset = 0; \
247: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
248: { \
249: offset = XEXP (addr, 0); \
250: addr = XEXP (addr, 1); \
251: } \
252: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
253: { \
254: offset = XEXP (addr, 1); \
255: addr = XEXP (addr, 0); \
256: } \
257: if (GET_CODE (addr) != PLUS) ; \
258: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
259: { \
260: reg1 = XEXP (addr, 0); \
261: addr = XEXP (addr, 1); \
262: } \
263: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
264: { \
265: reg1 = XEXP (addr, 1); \
266: addr = XEXP (addr, 0); \
267: } \
268: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
269: { \
270: reg1 = XEXP (addr, 0); \
271: addr = XEXP (addr, 1); \
272: } \
273: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
274: { \
275: reg1 = XEXP (addr, 1); \
276: addr = XEXP (addr, 0); \
277: } \
278: else if (GET_CODE (XEXP (addr, 0)) == REG) \
279: { \
280: reg1 = XEXP (addr, 0); \
281: addr = XEXP (addr, 1); \
282: } \
283: else if (GET_CODE (XEXP (addr, 1)) == REG) \
284: { \
285: reg1 = XEXP (addr, 1); \
286: addr = XEXP (addr, 0); \
287: } \
288: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
289: || GET_CODE (addr) == SIGN_EXTEND) \
290: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
291: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
292: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
293: || GET_CODE (reg1) == MULT)) \
294: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
295: { breg = reg2; ireg = reg1; } \
296: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
297: { breg = reg1; ireg = reg2; } \
298: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
299: { int scale = 1; \
300: if (GET_CODE (ireg) == MULT) \
301: { scale = INTVAL (XEXP (ireg, 1)); \
302: ireg = XEXP (ireg, 0); } \
303: if (GET_CODE (ireg) == SIGN_EXTEND) \
304: fprintf (FILE, "(L%d-LI%d.b,pc,%s.w", \
305: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
306: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
307: reg_name[REGNO (XEXP (ireg, 0))]); \
308: else \
309: fprintf (FILE, "(L%d-LI%d.b,pc,%s.l", \
310: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
311: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
312: reg_name[REGNO (ireg)]); \
313: if (scale != 1) fprintf (FILE, "*%d", scale); \
314: putc (')', FILE); \
315: break; } \
316: if (ireg != 0 || breg != 0) \
317: { int scale = 1; \
318: if (breg == 0) \
319: abort (); \
320: fprintf (FILE, "("); \
321: if (addr != 0) { \
322: output_addr_const (FILE, addr); \
323: putc (',', FILE); } \
324: fprintf (FILE, "%s", reg_name[REGNO (breg)]); \
325: if (ireg != 0) \
326: putc (',', FILE); \
327: if (ireg != 0 && GET_CODE (ireg) == MULT) \
328: { scale = INTVAL (XEXP (ireg, 1)); \
329: ireg = XEXP (ireg, 0); } \
330: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
331: fprintf (FILE, "%s.w", reg_name[REGNO (XEXP (ireg, 0))]); \
332: else if (ireg != 0) \
333: fprintf (FILE, "%s.l", reg_name[REGNO (ireg)]); \
334: if (scale != 1) fprintf (FILE, "*%d", scale); \
335: putc (')', FILE); \
336: break; \
337: } \
338: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
339: { fprintf (FILE, "(L%d-LI%d.b,pc,%s:l)", \
340: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
341: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
342: reg_name[REGNO (reg1)]); \
343: break; } \
344: default: \
345: if (GET_CODE (addr) == CONST_INT \
346: && INTVAL (addr) < 0x8000 \
347: && INTVAL (addr) >= -0x8000) \
348: fprintf (FILE, "%d.w", INTVAL (addr)); \
349: else \
350: output_addr_const (FILE, addr); \
351: }}
352:
353: #else /* Using GAS, which uses the MIT assembler syntax, like a Sun. */
354:
355: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
356: fprintf (FILE, "\tmovl #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
357:
358: #endif /* MOTOROLA */
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