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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:
45: #define CPP_PREDEFINES "-Dunix -Dmc68020 -Dnews800"
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
77:
78: /* NEWS makes d2, d3, fp2 and fp3 unsaved registers, unlike the Sun system. */
79:
80: #define CALL_USED_REGISTERS \
81: {1, 1, 1, 1, 0, 0, 0, 0, \
82: 1, 1, 0, 0, 0, 0, 0, 1, \
83: 1, 1, 1, 1, 0, 0, 0, 0}
84:
85: /* NEWS returns floats and doubles in fp0, not d0/d1. */
86:
87: #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
88:
89: #define LIBCALL_VALUE(MODE) \
90: gen_rtx (REG, (MODE), ((TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0))
91:
92: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
93: fprintf (FILE, "\t.align %d\n", (LOG))
94:
95: #ifdef MOTOROLA
96:
97: #define FUNCTION_PROLOGUE(FILE, SIZE) \
98: { register int regno; \
99: register int mask = 0; \
100: static char *reg_names[] = REGISTER_NAMES; \
101: extern char call_used_regs[]; \
102: int fsize = (SIZE); \
103: if (frame_pointer_needed) \
104: { if (TARGET_68020 || fsize < 0x10000) \
105: fprintf (FILE, "\tlink fp,#%d\n", -fsize); \
106: else \
107: fprintf (FILE, "\tlink fp,#0\n\tsub.l #%d,sp\n", fsize); } \
108: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
109: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
110: mask |= 1 << (regno - 16); \
111: if (mask != 0) \
112: fprintf (FILE, "\tfmovem.x #0x%x,-(sp)\n", mask & 0xff); \
113: mask = 0; \
114: for (regno = 0; regno < 16; regno++) \
115: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
116: mask |= 1 << (15 - regno); \
117: if (frame_pointer_needed) \
118: mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
119: if (exact_log2 (mask) >= 0) \
120: fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
121: else if (mask) fprintf (FILE, "\tmovem.l #0x%x,-(sp)\n", mask); }
122:
123: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
124: fprintf (FILE, "\tmove.l #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
125:
126: #define FUNCTION_EPILOGUE(FILE, SIZE) \
127: { register int regno; \
128: register int mask, fmask; \
129: register int nregs; \
130: int offset, foffset; \
131: extern char call_used_regs[]; \
132: static char *reg_names[] = REGISTER_NAMES; \
133: extern int current_function_pops_args; \
134: extern int current_function_args_size; \
135: int fsize = (SIZE); \
136: int big = 0; \
137: nregs = 0; fmask = 0; \
138: for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \
139: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
140: { nregs++; fmask |= 1 << (23 - regno); } \
141: foffset = nregs * 12; \
142: nregs = 0; mask = 0; \
143: if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
144: for (regno = 0; regno < 16; regno++) \
145: if (regs_ever_live[regno] && ! call_used_regs[regno]) \
146: { nregs++; mask |= 1 << regno; } \
147: offset = foffset + nregs * 4; \
148: if (offset + fsize >= 0x8000 && frame_pointer_needed) \
149: { fprintf (FILE, "\tmove.l #%d,a0\n", -fsize); \
150: fsize = 0, big = 1; } \
151: if (exact_log2 (mask) >= 0) { \
152: if (big) \
153: fprintf (FILE, "\tmove.l (-%d,fp,a0.l),%s\n", \
154: offset + fsize, reg_names[exact_log2 (mask)]); \
155: else if (! frame_pointer_needed) \
156: fprintf (FILE, "\tmove.l (sp)+,%s\n", \
157: reg_names[exact_log2 (mask)]); \
158: else \
159: fprintf (FILE, "\tmove.l (-%d,fp),%s\n", \
160: offset + fsize, reg_names[exact_log2 (mask)]); } \
161: else if (mask) { \
162: if (big) \
163: fprintf (FILE, "\tmovem.l (-%d,fp,a0.l),#0x%x\n", \
164: offset + fsize, mask); \
165: else if (! frame_pointer_needed) \
166: fprintf (FILE, "\tmovem.l (sp)+,#0x%x\n", mask); \
167: else \
168: fprintf (FILE, "\tmovem.l (-%d,fp),#0x%x\n", \
169: offset + fsize, mask); } \
170: if (fmask) { \
171: if (big) \
172: fprintf (FILE, "\tfmovem.x (-%d,fp,a0.l),#0x%x\n", \
173: foffset + fsize, fmask); \
174: else if (! frame_pointer_needed) \
175: fprintf (FILE, "\tfmovem.x (sp)+,#0x%x\n", fmask); \
176: else \
177: fprintf (FILE, "\tfmovem.x (-%d,fp),#0x%x\n", \
178: foffset + fsize, fmask); } \
179: if (frame_pointer_needed) \
180: fprintf (FILE, "\tunlk fp\n"); \
181: if (current_function_pops_args && current_function_args_size) \
182: fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
183: else fprintf (FILE, "\trts\n"); }
184:
185: /* Difference from tm-m68k.h is in `fp' instead of `a6'. */
186:
187: #define REGISTER_NAMES \
188: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
189: "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
190: "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}
191:
192: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
193: fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))
194:
195: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
196: fprintf (FILE, "\t.space %d\n", (SIZE))
197:
198: #define PRINT_OPERAND(FILE, X, CODE) \
199: { if (CODE == '.') fprintf (FILE, "."); \
200: else if (CODE == '#') fprintf (FILE, "#"); \
201: else if (CODE == '-') fprintf (FILE, "-(sp)"); \
202: else if (CODE == '+') fprintf (FILE, "(sp)+"); \
203: else if (CODE == 's') fprintf (FILE, "(sp)"); \
204: else if (CODE == '!') fprintf (FILE, "ccr"); \
205: else if (GET_CODE (X) == REG) \
206: fprintf (FILE, "%s", reg_name [REGNO (X)]); \
207: else if (GET_CODE (X) == MEM) \
208: output_address (XEXP (X, 0)); \
209: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
210: { union { double d; int i[2]; } u; \
211: union { float f; int i; } u1; \
212: u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1); \
213: u1.f = u.d; \
214: if (CODE == 'f') \
215: fprintf (FILE, "#0f%.9e", u1.f); \
216: else \
217: fprintf (FILE, "#0x%x", u1.i); } \
218: else if (GET_CODE (X) == CONST_DOUBLE) \
219: { union { double d; int i[2]; } u; \
220: u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1); \
221: fprintf (FILE, "#0d%.20e", u.d); } \
222: else if (CODE == 'b') output_addr_const (FILE, X); \
223: else { putc ('#', FILE); output_addr_const (FILE, X); }}
224:
225: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
226: { register rtx reg1, reg2, breg, ireg; \
227: register rtx addr = ADDR; \
228: rtx offset; \
229: switch (GET_CODE (addr)) \
230: { \
231: case REG: \
232: fprintf (FILE, "(%s)", reg_name [REGNO (addr)]); \
233: break; \
234: case PRE_DEC: \
235: fprintf (FILE, "-(%s)", reg_name [REGNO (XEXP (addr, 0))]); \
236: break; \
237: case POST_INC: \
238: fprintf (FILE, "(%s)+", reg_name [REGNO (XEXP (addr, 0))]); \
239: break; \
240: case PLUS: \
241: reg1 = 0; reg2 = 0; \
242: ireg = 0; breg = 0; \
243: offset = 0; \
244: if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
245: { \
246: offset = XEXP (addr, 0); \
247: addr = XEXP (addr, 1); \
248: } \
249: else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
250: { \
251: offset = XEXP (addr, 1); \
252: addr = XEXP (addr, 0); \
253: } \
254: if (GET_CODE (addr) != PLUS) ; \
255: else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
256: { \
257: reg1 = XEXP (addr, 0); \
258: addr = XEXP (addr, 1); \
259: } \
260: else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
261: { \
262: reg1 = XEXP (addr, 1); \
263: addr = XEXP (addr, 0); \
264: } \
265: else if (GET_CODE (XEXP (addr, 0)) == MULT) \
266: { \
267: reg1 = XEXP (addr, 0); \
268: addr = XEXP (addr, 1); \
269: } \
270: else if (GET_CODE (XEXP (addr, 1)) == MULT) \
271: { \
272: reg1 = XEXP (addr, 1); \
273: addr = XEXP (addr, 0); \
274: } \
275: else if (GET_CODE (XEXP (addr, 0)) == REG) \
276: { \
277: reg1 = XEXP (addr, 0); \
278: addr = XEXP (addr, 1); \
279: } \
280: else if (GET_CODE (XEXP (addr, 1)) == REG) \
281: { \
282: reg1 = XEXP (addr, 1); \
283: addr = XEXP (addr, 0); \
284: } \
285: if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
286: || GET_CODE (addr) == SIGN_EXTEND) \
287: { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
288: if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
289: if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
290: || GET_CODE (reg1) == MULT)) \
291: || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
292: { breg = reg2; ireg = reg1; } \
293: else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
294: { breg = reg1; ireg = reg2; } \
295: if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
296: { int scale = 1; \
297: if (GET_CODE (ireg) == MULT) \
298: { scale = INTVAL (XEXP (ireg, 1)); \
299: ireg = XEXP (ireg, 0); } \
300: if (GET_CODE (ireg) == SIGN_EXTEND) \
301: fprintf (FILE, "(L%d-LI%d.b,pc,%s.w", \
302: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
303: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
304: reg_name[REGNO (XEXP (ireg, 0))]); \
305: else \
306: fprintf (FILE, "(L%d-LI%d.b,pc,%s.l", \
307: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
308: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
309: reg_name[REGNO (ireg)]); \
310: if (scale != 1) fprintf (FILE, "*%d", scale); \
311: putc (')', FILE); \
312: break; } \
313: if (ireg != 0 || breg != 0) \
314: { int scale = 1; \
315: if (breg == 0) \
316: abort (); \
317: fprintf (FILE, "("); \
318: if (addr != 0) { \
319: output_addr_const (FILE, addr); \
320: putc (',', FILE); } \
321: fprintf (FILE, "%s", reg_name[REGNO (breg)]); \
322: if (ireg != 0) \
323: putc (',', FILE); \
324: if (ireg != 0 && GET_CODE (ireg) == MULT) \
325: { scale = INTVAL (XEXP (ireg, 1)); \
326: ireg = XEXP (ireg, 0); } \
327: if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
328: fprintf (FILE, "%s.w", reg_name[REGNO (XEXP (ireg, 0))]); \
329: else if (ireg != 0) \
330: fprintf (FILE, "%s.l", reg_name[REGNO (ireg)]); \
331: if (scale != 1) fprintf (FILE, "*%d", scale); \
332: putc (')', FILE); \
333: break; \
334: } \
335: else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
336: { fprintf (FILE, "(L%d-LI%d.b,pc,%s:l)", \
337: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
338: CODE_LABEL_NUMBER (XEXP (addr, 0)), \
339: reg_name[REGNO (reg1)]); \
340: break; } \
341: default: \
342: if (GET_CODE (addr) == CONST_INT \
343: && INTVAL (addr) < 0x8000 \
344: && INTVAL (addr) >= -0x8000) \
345: fprintf (FILE, "%d.w", INTVAL (addr)); \
346: else \
347: output_addr_const (FILE, addr); \
348: }}
349:
350: #else /* Using GAS, which uses the MIT assembler syntax, like a Sun. */
351:
352: #define FUNCTION_PROFILER(FILE, LABEL_NO) \
353: fprintf (FILE, "\tmovl #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));
354:
355: #endif /* MOTOROLA */
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