1: /*
2: $Id: hppa.h,v 1.3 1994/10/04 18:23:59 pazsan Exp $
3: Copyright 1992 by the ANSI figForth Development Group
4:
5: This is the machine-specific part for a HPPA running HP-UX
6: */
7: /* cache flush stuff */
8:
9: #ifdef DIRECT_THREADED
10:
11: extern void * cacheflush(void *, int, int);
12: #ifdef DEBUG
13: # define CACHE_FLUSH(addr,size) \
14: ({ fprintf(stderr,"Flushing Cache at %08x:%08x\n",(int) addr, size); \
15: fflush(stderr); \
16: fprintf(stderr,"Cache flushed, final address: %08x\n", \
17: (int)cacheflush((void *)(addr), (int)(size), 32)); })
18: #else
19: # define CACHE_FLUSH(addr,size) \
20: ({ (void)cacheflush((void *)(addr), (int)(size), 32); })
21: # endif
22: #endif
23:
24:
25: /* Cell and UCell must be the same size as a pointer */
26: typedef long Cell;
27: typedef unsigned long UCell;
28:
29: /* DCell and UDCell must be twice as large as Cell */
30: typedef long long DCell;
31: typedef unsigned long long UDCell;
32:
33: /* define this if IEEE singles and doubles are available as C data types */
34: #define IEEE_FP
35:
36: /* the IEEE types are used only for loading and storing */
37: /* the IEEE double precision type */
38: typedef double DFloat;
39: /* the IEEE single precision type */
40: typedef float SFloat;
41:
42: /* define this if the least-significant byte is at the largets address */
43: #define BIG_ENDIAN
44:
45: #ifdef DIRECT_THREADED
46: /* PFA gives the parameter field address corresponding to a cfa */
47: # define PFA(cfa) (((Cell *)cfa)+2)
48: /* PFA1 is a special version for use just after a NEXT1 */
49: /* the improvement here is that we may destroy cfa before using PFA1 */
50: # define PFA1(cfa) PFA(cfa)
51: /* HPPA uses register 2 for branch and link */
52:
53: /* CODE_ADDRESS is the address of the code jumped to through the code field */
54:
55: /* MAKE_CF creates an appropriate code field at the cfa; ca is the code address */
56: /* we use ble and a register, since 'bl' only has 21 bits displacement */
57: #endif
58:
59: #ifdef DIRECT_THREADED
60:
61: # ifdef DEBUG
62: # define DOUT(a,b,c,d) fprintf(stderr,a,b,c,d)
63: # else
64: # define DOUT(a,b,c,d)
65: # endif
66:
67: # define ASS17(n)(((((n) >> 13) & 0x1F) << 16)| /* first 5 bits */ \
68: ((((n) >> 2) & 0x3FF) << 3)| /* second 11 bits */ \
69: ((((n) >> 12) & 0x1) << 2) | /* lo sign (arg!) */ \
70: (((n) < 0) << 0)) /* sign bit */
71:
72: # define DIS17(n)(((((n) >> 16) & 0x1F) << 13)| /* first 5 bits */ \
73: ((((n) >> 3) & 0x3FF) << 2)| /* second 11 bits */ \
74: ((((n) >> 2) & 0x1) << 12) | /* lo sign (arg!) */ \
75: (-((n) & 1) << 18)) /* sign bit */
76:
77: # define CODE_ADDRESS(cfa) ((Label)({ \
78: unsigned int *_cfa=(unsigned int *)(cfa); unsigned _ca; \
79: if((_cfa[0] & 0xFFE0E002) == 0xE8000000) /* relative branch */ \
80: { \
81: _ca = _cfa[0]; \
82: _ca = DIS17(_ca); \
83: _ca += (int) (_cfa + 2); \
84: } \
85: else if((_cfa[0] & 0xFFE0E002) == 0xE0000000) /* absolute branch */ \
86: { \
87: _ca = _cfa[0]; \
88: _ca = DIS17(_ca); \
89: } \
90: else \
91: { \
92: _ca = _cfa[0]; \
93: _ca = (_ca<<31) | \
94: ((_ca>>1 ) & 0x00001800) | \
95: ((_ca>>3 ) & 0x0003E000) | \
96: ((_ca<<4 ) & 0x000C0000) | \
97: ((_ca<<19) & 0x7FF00000) | \
98: ((_cfa[1]>>1) & 0xFFC); \
99: } \
100: /* printf("code-address at %08x: %08x\n",_ca,_cfa); */ \
101: _ca; \
102: }))
103:
104: # define MAKE_CF(cfa,ca) \
105: ({ \
106: long *_cfa = (long *)(cfa); \
107: int _ca = (int)(ca)+4; \
108: int _dp = _ca-(int)(_cfa+2); \
109: \
110: if(_ca < 0x40000) /* Branch absolute */ \
111: { \
112: _cfa[0] =((0x38 << 26) | /* major opcode */ \
113: ( 0 << 21) | /* register */ \
114: ( 0 << 13) | /* space register */ \
115: ( 0 << 1))| /* if 1, don't execute delay slot */ \
116: ASS17(_ca); \
117: _cfa[1] = ((long *)(_ca))[-1]; /* or %r0,%r0,%r0 */; \
118: } \
119: else if(_dp < 0x40000 || _dp >= -0x40000) \
120: { \
121: _cfa[0] =((0x3A << 26) | /* major opcode */ \
122: ( 0 << 21) | /* register */ \
123: ( 0 << 13) | /* space register */ \
124: ( 0 << 1))| /* if 1, don't execute delay slot */ \
125: ASS17(_dp); \
126: _cfa[1] = ((long *)(_ca))[-1]; /* 0x08000240 or %r0,%r0,%r0 */; \
127: } \
128: else \
129: { \
130: _ca -= 4; \
131: _cfa[0] = (0x08 << 26) | \
132: ((int)_ca<0) | \
133: (_ca & 0x00001800)<<1 | \
134: (_ca & 0x0003E000)<<3 | \
135: (_ca & 0x000C0000)>>4 | \
136: (_ca & 0x7FF00000)>>19; \
137: _ca &= 0x3FF; \
138: _cfa[1] =((0x38 << 26) | /* major opcode */ \
139: ( 1 << 21) | /* register */ \
140: ( 0 << 13) | /* space register */ \
141: ( 1 << 1))| /* if 1, don't execute delay slot */ \
142: ASS17(_ca); \
143: } \
144: DOUT("%08x: %08x,%08x\n",(int)_cfa,_cfa[0],_cfa[1]); \
145: })
146: /* HP wins the price for the most obfuscated binary opcode */
147:
148: /* this is the point where the does code starts if label points to the
149: * jump dodoes */
150:
151: # define DOES_CODE(cfa) ((Xt *)(((long *)(cfa))[1]))
152:
153: /* this is a special version of DOES_CODE for use in dodoes */
154: # define DOES_CODE1(cfa) DOES_CODE(cfa) \
155: /* ({register Xt * _ret asm("%r31"); _ret;}) */
156:
157: /* HPPA uses register 2 for branch and link */
158:
159: # define DOES_HANDLER_SIZE 8
160: # define MAKE_DOES_HANDLER(cfa) ({ *(long *)(cfa)=DODOES; })
161: #ifdef undefined
162: # define MAKE_DOES_HANDLER(cfa) \
163: ({ \
164: long *_cfa = (long *)(cfa); \
165: int _ca = (int)symbols[DODOES]; \
166: int _dp = _ca-(int)(_cfa+2); \
167: \
168: if(_ca < 0x40000) /* Branch absolute */ \
169: { \
170: _cfa[0] =((0x38 << 26) | /* major opcode */ \
171: ( 0 << 21) | /* register */ \
172: ( 0 << 13) | /* space register */ \
173: ( 0 << 1))| /* if 1, don't execute delay slot */ \
174: ASS17(_ca); \
175: _cfa[1] = 0x08000240 /* or %r0,%r0,%r0 */; \
176: } \
177: else if(_dp < 0x40000 || _dp >= -0x40000) \
178: { \
179: _cfa[0] =((0x3A << 26) | /* major opcode */ \
180: ( 0 << 21) | /* register */ \
181: ( 0 << 13) | /* space register */ \
182: ( 0 << 1))| /* if 1, don't execute delay slot */ \
183: ASS17(_dp); \
184: _cfa[1] = 0x08000240 /* or %r0,%r0,%r0 */; \
185: } \
186: else \
187: { \
188: fprintf(stderr,"DOESHANDLER assignment failed, use ITC instead of DTC\n"); exit(1); \
189: _cfa[0] = (0x08 << 26) | \
190: ((int)_ca<0) | \
191: (_ca & 0x00001800)<<1 | \
192: (_ca & 0x0003E000)<<3 | \
193: (_ca & 0x000C0000)>>4 | \
194: (_ca & 0x7FF00000)>>19; \
195: _ca &= 0x3FF; \
196: _cfa[1] =((0x38 << 26) | /* major opcode */ \
197: ( 1 << 21) | /* register */ \
198: ( 0 << 13) | /* space register */ \
199: ( 1 << 1))| /* if 1, don't execute delay slot */ \
200: ASS17(_ca); \
201: } \
202: DOUT("%08x: %08x,%08x\n",(int)_cfa,_cfa[0],_cfa[1]); \
203: })
204: #endif
205:
206: # define MAKE_DOES_CF(cfa,ca) \
207: ({ \
208: long *_cfa = (long *)(cfa); \
209: int _ca = (int)symbols[DODOES]; \
210: int _dp = _ca-(int)(_cfa+2); \
211: \
212: if(_ca < 0x40000) /* Branch absolute */ \
213: { \
214: _cfa[0] =((0x38 << 26) | /* major opcode */ \
215: ( 0 << 21) | /* register */ \
216: ( 0 << 13) | /* space register */ \
217: ( 1 << 1))| /* if 1, don't execute delay slot */ \
218: ASS17(_ca); \
219: _cfa[1] = (long)(ca); \
220: } \
221: else if(_dp < 0x40000 || _dp >= -0x40000) \
222: { \
223: _cfa[0] =((0x3A << 26) | /* major opcode */ \
224: ( 0 << 21) | /* register */ \
225: ( 0 << 13) | /* space register */ \
226: ( 1 << 1))| /* if 1, don't execute delay slot */ \
227: ASS17(_dp); \
228: _cfa[1] = (long)(ca); \
229: } \
230: else \
231: { \
232: fprintf(stderr,"DOESCFA assignment failed, use ITC instead of DTC\n"); exit(1); \
233: } \
234: DOUT("%08x: %08x,%08x\n",(int)_cfa,_cfa[0],_cfa[1]); \
235: })
236: /* this stores a call dodoes at addr */
237: #endif
238:
239: /* OS dependences */
240:
241: #define SEEK_SET 0
242: #define rint(x) floor((x)+0.5)
243:
244:
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