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root/cebix/BasiliskII/src/uae_cpu/m68k.h
Revision: 1.6
Committed: 2002-11-05T11:59:12Z (21 years, 7 months ago) by gbeauche
Content type: text/plain
Branch: MAIN
CVS Tags: nigel-build-12, nigel-build-13, nigel-build-16, nigel-build-17, nigel-build-15
Changes since 1.5: +34 -31 lines
Log Message: 
OPTIMIZED_FLAGS for x86-64 with the pushf/pop method since sahf/lahf are
invalid in long mode.

File Contents

# User Rev Content
1 cebix 1.1 /*
2     * UAE - The Un*x Amiga Emulator
3     *
4     * MC68000 emulation - machine dependent bits
5     *
6     * Copyright 1996 Bernd Schmidt
7     */
8    
9 gbeauche 1.5 #ifndef M68K_FLAGS_H
10     #define M68K_FLAGS_H
11    
12     #ifdef OPTIMIZED_FLAGS
13    
14 gbeauche 1.6 #if (defined(__i386__) && defined(X86_ASSEMBLY)) || (defined(__x86_64__) && defined(X86_64_ASSEMBLY))
15 cebix 1.1
16 gbeauche 1.5 #ifndef SAHF_SETO_PROFITABLE
17    
18 gbeauche 1.6 /* PUSH/POP instructions are naturally 64-bit sized on x86-64, thus
19     unsigned long hereunder is either 64-bit or 32-bit wide depending
20     on the target. */
21 cebix 1.1 struct flag_struct {
22 gbeauche 1.6 unsigned long cznv;
23     unsigned long x;
24 cebix 1.1 };
25    
26 gbeauche 1.5 #define FLAGVAL_Z 0x40
27     #define FLAGVAL_N 0x80
28    
29 gbeauche 1.6 #define SET_ZFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~0x40) | (((y) & 1) << 6))
30     #define SET_CFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~1) | ((y) & 1))
31     #define SET_VFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~0x800) | (((y) & 1) << 11))
32     #define SET_NFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~0x80) | (((y) & 1) << 7))
33 gbeauche 1.5 #define SET_XFLG(y) (regflags.x = (y))
34    
35     #define GET_ZFLG ((regflags.cznv >> 6) & 1)
36     #define GET_CFLG (regflags.cznv & 1)
37     #define GET_VFLG ((regflags.cznv >> 11) & 1)
38     #define GET_NFLG ((regflags.cznv >> 7) & 1)
39     #define GET_XFLG (regflags.x & 1)
40    
41     #define CLEAR_CZNV (regflags.cznv = 0)
42     #define GET_CZNV (regflags.cznv)
43     #define IOR_CZNV(X) (regflags.cznv |= (X))
44     #define SET_CZNV(X) (regflags.cznv = (X))
45 cebix 1.1
46 gbeauche 1.5 #define COPY_CARRY (regflags.x = regflags.cznv)
47 cebix 1.1
48     extern struct flag_struct regflags __asm__ ("regflags");
49    
50     static __inline__ int cctrue(int cc)
51     {
52     uae_u32 cznv = regflags.cznv;
53     switch(cc){
54     case 0: return 1; /* T */
55     case 1: return 0; /* F */
56     case 2: return (cznv & 0x41) == 0; /* !GET_CFLG && !GET_ZFLG; HI */
57     case 3: return (cznv & 0x41) != 0; /* GET_CFLG || GET_ZFLG; LS */
58     case 4: return (cznv & 1) == 0; /* !GET_CFLG; CC */
59     case 5: return (cznv & 1) != 0; /* GET_CFLG; CS */
60     case 6: return (cznv & 0x40) == 0; /* !GET_ZFLG; NE */
61     case 7: return (cznv & 0x40) != 0; /* GET_ZFLG; EQ */
62     case 8: return (cznv & 0x800) == 0;/* !GET_VFLG; VC */
63     case 9: return (cznv & 0x800) != 0;/* GET_VFLG; VS */
64     case 10:return (cznv & 0x80) == 0; /* !GET_NFLG; PL */
65     case 11:return (cznv & 0x80) != 0; /* GET_NFLG; MI */
66     case 12:return (((cznv << 4) ^ cznv) & 0x800) == 0; /* GET_NFLG == GET_VFLG; GE */
67     case 13:return (((cznv << 4) ^ cznv) & 0x800) != 0;/* GET_NFLG != GET_VFLG; LT */
68     case 14:
69     cznv &= 0x8c0;
70     return (((cznv << 4) ^ cznv) & 0x840) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */
71     case 15:
72     cznv &= 0x8c0;
73     return (((cznv << 4) ^ cznv) & 0x840) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */
74     }
75     return 0;
76     }
77    
78 gbeauche 1.5 #define optflag_testl(v) \
79     __asm__ __volatile__ ("andl %1,%1\n\t" \
80 gbeauche 1.6 "pushf\n\t" \
81     "pop %0\n\t" \
82 cebix 1.1 : "=r" (regflags.cznv) : "r" (v) : "cc")
83    
84 gbeauche 1.5 #define optflag_testw(v) \
85     __asm__ __volatile__ ("andw %w1,%w1\n\t" \
86 gbeauche 1.6 "pushf\n\t" \
87     "pop %0\n\t" \
88 cebix 1.1 : "=r" (regflags.cznv) : "r" (v) : "cc")
89    
90 gbeauche 1.5 #define optflag_testb(v) \
91     __asm__ __volatile__ ("andb %b1,%b1\n\t" \
92 gbeauche 1.6 "pushf\n\t" \
93     "pop %0\n\t" \
94 cebix 1.1 : "=r" (regflags.cznv) : "q" (v) : "cc")
95    
96 gbeauche 1.5 #define optflag_addl(v, s, d) do { \
97 cebix 1.1 __asm__ __volatile__ ("addl %k2,%k1\n\t" \
98 gbeauche 1.6 "pushf\n\t" \
99     "pop %0\n\t" \
100 cebix 1.1 : "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \
101     COPY_CARRY; \
102     } while (0)
103    
104 gbeauche 1.5 #define optflag_addw(v, s, d) do { \
105 cebix 1.1 __asm__ __volatile__ ("addw %w2,%w1\n\t" \
106 gbeauche 1.6 "pushf\n\t" \
107     "pop %0\n\t" \
108 cebix 1.1 : "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \
109     COPY_CARRY; \
110     } while (0)
111    
112 gbeauche 1.5 #define optflag_addb(v, s, d) do { \
113 cebix 1.1 __asm__ __volatile__ ("addb %b2,%b1\n\t" \
114 gbeauche 1.6 "pushf\n\t" \
115     "pop %0\n\t" \
116 cebix 1.1 : "=r" (regflags.cznv), "=q" (v) : "qmi" (s), "1" (d) : "cc"); \
117     COPY_CARRY; \
118     } while (0)
119    
120 gbeauche 1.5 #define optflag_subl(v, s, d) do { \
121 cebix 1.1 __asm__ __volatile__ ("subl %k2,%k1\n\t" \
122 gbeauche 1.6 "pushf\n\t" \
123     "pop %0\n\t" \
124 cebix 1.1 : "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \
125     COPY_CARRY; \
126     } while (0)
127    
128 gbeauche 1.5 #define optflag_subw(v, s, d) do { \
129 cebix 1.1 __asm__ __volatile__ ("subw %w2,%w1\n\t" \
130 gbeauche 1.6 "pushf\n\t" \
131     "pop %0\n\t" \
132 cebix 1.1 : "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \
133     COPY_CARRY; \
134     } while (0)
135    
136 gbeauche 1.5 #define optflag_subb(v, s, d) do { \
137 cebix 1.1 __asm__ __volatile__ ("subb %b2,%b1\n\t" \
138 gbeauche 1.6 "pushf\n\t" \
139     "pop %0\n\t" \
140 cebix 1.1 : "=r" (regflags.cznv), "=q" (v) : "qmi" (s), "1" (d) : "cc"); \
141     COPY_CARRY; \
142     } while (0)
143    
144 gbeauche 1.5 #define optflag_cmpl(s, d) \
145 cebix 1.1 __asm__ __volatile__ ("cmpl %k1,%k2\n\t" \
146 gbeauche 1.6 "pushf\n\t" \
147     "pop %0\n\t" \
148 cebix 1.1 : "=r" (regflags.cznv) : "rmi" (s), "r" (d) : "cc")
149    
150 gbeauche 1.5 #define optflag_cmpw(s, d) \
151 cebix 1.1 __asm__ __volatile__ ("cmpw %w1,%w2\n\t" \
152 gbeauche 1.6 "pushf\n\t" \
153     "pop %0\n\t" \
154 cebix 1.1 : "=r" (regflags.cznv) : "rmi" (s), "r" (d) : "cc")
155    
156 gbeauche 1.5 #define optflag_cmpb(s, d) \
157 cebix 1.1 __asm__ __volatile__ ("cmpb %b1,%b2\n\t" \
158 gbeauche 1.6 "pushf\n\t" \
159     "pop %0\n\t" \
160 cebix 1.1 : "=r" (regflags.cznv) : "qmi" (s), "q" (d) : "cc")
161 cebix 1.2
162 gbeauche 1.5 #else
163    
164     struct flag_struct {
165     uae_u32 cznv;
166     uae_u32 x;
167     };
168    
169     #define FLAGVAL_Z 0x4000
170     #define FLAGVAL_N 0x8000
171    
172     #define SET_ZFLG(y) (regflags.cznv = (regflags.cznv & ~0x4000) | (((y) & 1) << 14))
173     #define SET_CFLG(y) (regflags.cznv = (regflags.cznv & ~0x100) | (((y) & 1) << 8))
174     #define SET_VFLG(y) (regflags.cznv = (regflags.cznv & ~0x1) | (((y) & 1)))
175     #define SET_NFLG(y) (regflags.cznv = (regflags.cznv & ~0x8000) | (((y) & 1) << 15))
176     #define SET_XFLG(y) (regflags.x = (y))
177    
178     #define GET_ZFLG ((regflags.cznv >> 14) & 1)
179     #define GET_CFLG ((regflags.cznv >> 8) & 1)
180     #define GET_VFLG ((regflags.cznv >> 0) & 1)
181     #define GET_NFLG ((regflags.cznv >> 15) & 1)
182     #define GET_XFLG (regflags.x & 1)
183    
184     #define CLEAR_CZNV (regflags.cznv = 0)
185     #define GET_CZNV (regflags.cznv)
186     #define IOR_CZNV(X) (regflags.cznv |= (X))
187     #define SET_CZNV(X) (regflags.cznv = (X))
188    
189     #define COPY_CARRY (regflags.x = (regflags.cznv)>>8)
190    
191     extern struct flag_struct regflags __asm__ ("regflags");
192    
193     static __inline__ int cctrue(int cc)
194     {
195     uae_u32 cznv = regflags.cznv;
196     switch(cc){
197     case 0: return 1; /* T */
198     case 1: return 0; /* F */
199     case 2: return (cznv & 0x4100) == 0; /* !GET_CFLG && !GET_ZFLG; HI */
200     case 3: return (cznv & 0x4100) != 0; /* GET_CFLG || GET_ZFLG; LS */
201     case 4: return (cznv & 0x100) == 0; /* !GET_CFLG; CC */
202     case 5: return (cznv & 0x100) != 0; /* GET_CFLG; CS */
203     case 6: return (cznv & 0x4000) == 0; /* !GET_ZFLG; NE */
204     case 7: return (cznv & 0x4000) != 0; /* GET_ZFLG; EQ */
205     case 8: return (cznv & 0x01) == 0; /* !GET_VFLG; VC */
206     case 9: return (cznv & 0x01) != 0; /* GET_VFLG; VS */
207     case 10:return (cznv & 0x8000) == 0; /* !GET_NFLG; PL */
208     case 11:return (cznv & 0x8000) != 0; /* GET_NFLG; MI */
209     case 12:return (((cznv << 15) ^ cznv) & 0x8000) == 0; /* GET_NFLG == GET_VFLG; GE */
210     case 13:return (((cznv << 15) ^ cznv) & 0x8000) != 0;/* GET_NFLG != GET_VFLG; LT */
211     case 14:
212     cznv &= 0xc001;
213     return (((cznv << 15) ^ cznv) & 0xc000) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */
214     case 15:
215     cznv &= 0xc001;
216     return (((cznv << 15) ^ cznv) & 0xc000) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */
217     }
218     abort();
219     return 0;
220     }
221    
222     /* Is there any way to do this without declaring *all* memory clobbered?
223     I.e. any way to tell gcc that some byte-sized value is in %al? */
224     #define optflag_testl(v) \
225     __asm__ __volatile__ ("andl %0,%0\n\t" \
226     "lahf\n\t" \
227     "seto %%al\n\t" \
228     "movb %%al,regflags\n\t" \
229     "movb %%ah,regflags+1\n\t" \
230     : : "r" (v) : "%eax","cc","memory")
231    
232     #define optflag_testw(v) \
233     __asm__ __volatile__ ("andw %w0,%w0\n\t" \
234     "lahf\n\t" \
235     "seto %%al\n\t" \
236     "movb %%al,regflags\n\t" \
237     "movb %%ah,regflags+1\n\t" \
238     : : "r" (v) : "%eax","cc","memory")
239    
240     #define optflag_testb(v) \
241     __asm__ __volatile__ ("andb %b0,%b0\n\t" \
242     "lahf\n\t" \
243     "seto %%al\n\t" \
244     "movb %%al,regflags\n\t" \
245     "movb %%ah,regflags+1\n\t" \
246     : : "q" (v) : "%eax","cc","memory")
247    
248     #define optflag_addl(v, s, d) do { \
249     __asm__ __volatile__ ("addl %k1,%k0\n\t" \
250     "lahf\n\t" \
251     "seto %%al\n\t" \
252     "movb %%al,regflags\n\t" \
253     "movb %%ah,regflags+1\n\t" \
254     : "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \
255     COPY_CARRY; \
256     } while (0)
257    
258     #define optflag_addw(v, s, d) do { \
259     __asm__ __volatile__ ("addw %w1,%w0\n\t" \
260     "lahf\n\t" \
261     "seto %%al\n\t" \
262     "movb %%al,regflags\n\t" \
263     "movb %%ah,regflags+1\n\t" \
264     : "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \
265     COPY_CARRY; \
266     } while (0)
267    
268     #define optflag_addb(v, s, d) do { \
269     __asm__ __volatile__ ("addb %b1,%b0\n\t" \
270     "lahf\n\t" \
271     "seto %%al\n\t" \
272     "movb %%al,regflags\n\t" \
273     "movb %%ah,regflags+1\n\t" \
274     : "=q" (v) : "qmi" (s), "0" (d) : "%eax","cc","memory"); \
275     COPY_CARRY; \
276     } while (0)
277    
278     #define optflag_subl(v, s, d) do { \
279     __asm__ __volatile__ ("subl %k1,%k0\n\t" \
280     "lahf\n\t" \
281     "seto %%al\n\t" \
282     "movb %%al,regflags\n\t" \
283     "movb %%ah,regflags+1\n\t" \
284     : "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \
285     COPY_CARRY; \
286     } while (0)
287    
288     #define optflag_subw(v, s, d) do { \
289     __asm__ __volatile__ ("subw %w1,%w0\n\t" \
290     "lahf\n\t" \
291     "seto %%al\n\t" \
292     "movb %%al,regflags\n\t" \
293     "movb %%ah,regflags+1\n\t" \
294     : "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \
295     COPY_CARRY; \
296     } while (0)
297    
298     #define optflag_subb(v, s, d) do { \
299     __asm__ __volatile__ ("subb %b1,%b0\n\t" \
300     "lahf\n\t" \
301     "seto %%al\n\t" \
302     "movb %%al,regflags\n\t" \
303     "movb %%ah,regflags+1\n\t" \
304     : "=q" (v) : "qmi" (s), "0" (d) : "%eax","cc","memory"); \
305     COPY_CARRY; \
306     } while (0)
307    
308     #define optflag_cmpl(s, d) \
309     __asm__ __volatile__ ("cmpl %k0,%k1\n\t" \
310     "lahf\n\t" \
311     "seto %%al\n\t" \
312     "movb %%al,regflags\n\t" \
313     "movb %%ah,regflags+1\n\t" \
314     : : "rmi" (s), "r" (d) : "%eax","cc","memory")
315    
316     #define optflag_cmpw(s, d) \
317     __asm__ __volatile__ ("cmpw %w0,%w1\n\t" \
318     "lahf\n\t" \
319     "seto %%al\n\t" \
320     "movb %%al,regflags\n\t" \
321     "movb %%ah,regflags+1\n\t" \
322     : : "rmi" (s), "r" (d) : "%eax","cc","memory");
323    
324     #define optflag_cmpb(s, d) \
325     __asm__ __volatile__ ("cmpb %b0,%b1\n\t" \
326     "lahf\n\t" \
327     "seto %%al\n\t" \
328     "movb %%al,regflags\n\t" \
329     "movb %%ah,regflags+1\n\t" \
330     : : "qmi" (s), "q" (d) : "%eax","cc","memory")
331    
332     #endif
333    
334 cebix 1.2 #elif defined(__sparc__) && (defined(SPARC_V8_ASSEMBLY) || defined(SPARC_V9_ASSEMBLY))
335    
336     struct flag_struct {
337 cebix 1.4 unsigned char nzvc;
338     unsigned char x;
339 cebix 1.2 };
340    
341 cebix 1.4 extern struct flag_struct regflags;
342 cebix 1.2
343 gbeauche 1.5 #define FLAGVAL_Z 0x04
344     #define FLAGVAL_N 0x08
345    
346     #define SET_ZFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x04) | (((y) & 1) << 2))
347     #define SET_CFLG(y) (regflags.nzvc = (regflags.nzvc & ~1) | ((y) & 1))
348     #define SET_VFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x02) | (((y) & 1) << 1))
349     #define SET_NFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x08) | (((y) & 1) << 3))
350     #define SET_XFLG(y) (regflags.x = (y))
351    
352     #define GET_ZFLG ((regflags.nzvc >> 2) & 1)
353     #define GET_CFLG (regflags.nzvc & 1)
354     #define GET_VFLG ((regflags.nzvc >> 1) & 1)
355     #define GET_NFLG ((regflags.nzvc >> 3) & 1)
356     #define GET_XFLG (regflags.x & 1)
357    
358     #define CLEAR_CZNV (regflags.nzvc = 0)
359     #define GET_CZNV (reflags.nzvc)
360     #define IOR_CZNV(X) (refglags.nzvc |= (X))
361     #define SET_CZNV(X) (regflags.nzvc = (X))
362 cebix 1.2
363 cebix 1.4 #define COPY_CARRY (regflags.x = regflags.nzvc)
364 cebix 1.2
365     static __inline__ int cctrue(int cc)
366     {
367 cebix 1.4 uae_u32 nzvc = regflags.nzvc;
368 cebix 1.2 switch(cc){
369 cebix 1.4 case 0: return 1; /* T */
370     case 1: return 0; /* F */
371     case 2: return (nzvc & 0x05) == 0; /* !GET_CFLG && !GET_ZFLG; HI */
372     case 3: return (nzvc & 0x05) != 0; /* GET_CFLG || GET_ZFLG; LS */
373     case 4: return (nzvc & 1) == 0; /* !GET_CFLG; CC */
374     case 5: return (nzvc & 1) != 0; /* GET_CFLG; CS */
375     case 6: return (nzvc & 0x04) == 0; /* !GET_ZFLG; NE */
376     case 7: return (nzvc & 0x04) != 0; /* GET_ZFLG; EQ */
377     case 8: return (nzvc & 0x02) == 0;/* !GET_VFLG; VC */
378     case 9: return (nzvc & 0x02) != 0;/* GET_VFLG; VS */
379     case 10:return (nzvc & 0x08) == 0; /* !GET_NFLG; PL */
380     case 11:return (nzvc & 0x08) != 0; /* GET_NFLG; MI */
381     case 12:return (((nzvc << 2) ^ nzvc) & 0x08) == 0; /* GET_NFLG == GET_VFLG; GE */
382     case 13:return (((nzvc << 2) ^ nzvc) & 0x08) != 0;/* GET_NFLG != GET_VFLG; LT */
383 cebix 1.2 case 14:
384 cebix 1.4 nzvc &= 0x0e;
385     return (((nzvc << 2) ^ nzvc) & 0x0c) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */
386 cebix 1.2 case 15:
387 cebix 1.4 nzvc &= 0x0e;
388     return (((nzvc << 2) ^ nzvc) & 0x0c) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */
389 cebix 1.2 }
390     return 0;
391     }
392    
393     #ifdef SPARC_V8_ASSEMBLY
394    
395 cebix 1.4 static inline uae_u32 sparc_v8_flag_add_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
396 cebix 1.2 {
397     uae_u32 value;
398     __asm__ ("\n"
399     " sll %2, 24, %%o0\n"
400     " sll %3, 24, %%o1\n"
401     " addcc %%o0, %%o1, %%o0\n"
402 cebix 1.4 " addx %%g0, %%g0, %%o1 ! X,C flags\n"
403     " srl %%o0, 24, %0\n"
404     " stb %%o1, [%1 + 1]\n"
405     " bl,a .+8\n"
406     " or %%o1, 0x08, %%o1 ! N flag\n"
407     " bz,a .+8\n"
408     " or %%o1, 0x04, %%o1 ! Z flag\n"
409 cebix 1.2 " bvs,a .+8\n"
410 cebix 1.4 " or %%o1, 0x02, %%o1 ! V flag\n"
411     " stb %%o1, [%1]\n"
412 cebix 1.2 : "=&r" (value)
413 cebix 1.4 : "r" (flags), "r" (dst), "r" (src)
414 cebix 1.2 : "cc", "o0", "o1"
415     );
416     return value;
417     }
418    
419 cebix 1.4 static inline uae_u32 sparc_v8_flag_add_16(flag_struct *flags, uae_u32 src, uae_u32 dst)
420 cebix 1.2 {
421     uae_u32 value;
422     __asm__ ("\n"
423     " sll %2, 16, %%o0\n"
424     " sll %3, 16, %%o1\n"
425     " addcc %%o0, %%o1, %%o0\n"
426 cebix 1.4 " addx %%g0, %%g0, %%o1 ! X,C flags\n"
427     " srl %%o0, 16, %0\n"
428     " stb %%o1, [%1 + 1]\n"
429     " bl,a .+8\n"
430     " or %%o1, 0x08, %%o1 ! N flag\n"
431     " bz,a .+8\n"
432     " or %%o1, 0x04, %%o1 ! Z flag\n"
433 cebix 1.2 " bvs,a .+8\n"
434 cebix 1.4 " or %%o1, 0x02, %%o1 ! V flag\n"
435     " stb %%o1, [%1]\n"
436 cebix 1.2 : "=&r" (value)
437 cebix 1.4 : "r" (flags), "r" (dst), "r" (src)
438 cebix 1.2 : "cc", "o0", "o1"
439     );
440     return value;
441     }
442    
443 cebix 1.4 static inline uae_u32 sparc_v8_flag_add_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
444 cebix 1.2 {
445     uae_u32 value;
446     __asm__ ("\n"
447     " addcc %2, %3, %0\n"
448 cebix 1.4 " addx %%g0, %%g0, %%o0 ! X,C flags\n"
449     " stb %%o0, [%1 + 1]\n"
450     " bl,a .+8\n"
451     " or %%o0, 0x08, %%o0 ! N flag\n"
452     " bz,a .+8\n"
453     " or %%o0, 0x04, %%o0 ! Z flag\n"
454 cebix 1.2 " bvs,a .+8\n"
455 cebix 1.4 " or %%o0, 0x02, %%o0 ! V flag\n"
456     " stb %%o0, [%1]\n"
457 cebix 1.2 : "=&r" (value)
458 cebix 1.4 : "r" (flags), "r" (dst), "r" (src)
459     : "cc", "o0"
460 cebix 1.2 );
461     return value;
462     }
463    
464     static inline uae_u32 sparc_v8_flag_sub_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
465     {
466     uae_u32 value;
467     __asm__ ("\n"
468     " sll %2, 24, %%o0\n"
469     " sll %3, 24, %%o1\n"
470     " subcc %%o0, %%o1, %%o0\n"
471     " addx %%g0, %%g0, %%o1 ! X,C flags\n"
472     " srl %%o0, 24, %0\n"
473     " stb %%o1, [%1 + 1]\n"
474     " bl,a .+8\n"
475     " or %%o1, 0x08, %%o1 ! N flag\n"
476     " bz,a .+8\n"
477     " or %%o1, 0x04, %%o1 ! Z flag\n"
478     " bvs,a .+8\n"
479     " or %%o1, 0x02, %%o1 ! V flag\n"
480     " stb %%o1, [%1]\n"
481     : "=&r" (value)
482     : "r" (flags), "r" (dst), "r" (src)
483     : "cc", "o0", "o1"
484     );
485     return value;
486     }
487    
488     static inline uae_u32 sparc_v8_flag_sub_16(flag_struct *flags, uae_u32 src, uae_u32 dst)
489     {
490     uae_u32 value;
491     __asm__ ("\n"
492     " sll %2, 16, %%o0\n"
493     " sll %3, 16, %%o1\n"
494     " subcc %%o0, %%o1, %%o0\n"
495     " addx %%g0, %%g0, %%o1 ! X,C flags\n"
496     " srl %%o0, 16, %0\n"
497     " stb %%o1, [%1 + 1]\n"
498     " bl,a .+8\n"
499     " or %%o1, 0x08, %%o1 ! N flag\n"
500     " bz,a .+8\n"
501     " or %%o1, 0x04, %%o1 ! Z flag\n"
502     " bvs,a .+8\n"
503     " or %%o1, 0x02, %%o1 ! V flag\n"
504     " stb %%o1, [%1]\n"
505     : "=&r" (value)
506     : "r" (flags), "r" (dst), "r" (src)
507     : "cc", "o0", "o1"
508     );
509     return value;
510     }
511    
512     static inline uae_u32 sparc_v8_flag_sub_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
513     {
514     uae_u32 value;
515     __asm__ ("\n"
516     " subcc %2, %3, %0\n"
517     " addx %%g0, %%g0, %%o0 ! X,C flags\n"
518     " stb %%o0, [%1 + 1]\n"
519     " bl,a .+8\n"
520     " or %%o0, 0x08, %%o0 ! N flag\n"
521     " bz,a .+8\n"
522     " or %%o0, 0x04, %%o0 ! Z flag\n"
523     " bvs,a .+8\n"
524     " or %%o0, 0x02, %%o0 ! V flag\n"
525     " stb %%o0, [%1]\n"
526     : "=&r" (value)
527     : "r" (flags), "r" (dst), "r" (src)
528     : "cc", "o0"
529     );
530     return value;
531     }
532    
533     static inline void sparc_v8_flag_cmp_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
534     {
535     __asm__ ("\n"
536     " sll %1, 24, %%o0\n"
537     " sll %2, 24, %%o1\n"
538     " subcc %%o0, %%o1, %%g0\n"
539     " addx %%g0, %%g0, %%o0 ! C flag\n"
540     " bl,a .+8\n"
541     " or %%o0, 0x08, %%o0 ! N flag\n"
542     " bz,a .+8\n"
543     " or %%o0, 0x04, %%o0 ! Z flag\n"
544     " bvs,a .+8\n"
545     " or %%o0, 0x02, %%o0 ! V flag\n"
546     " stb %%o0, [%0]\n"
547     : /* no outputs */
548     : "r" (flags), "r" (dst), "r" (src)
549     : "cc", "o0", "o1"
550     );
551     }
552    
553     static inline void sparc_v8_flag_cmp_16(flag_struct *flags, uae_u32 src, uae_u32 dst)
554     {
555     __asm__ ("\n"
556     " sll %1, 16, %%o0\n"
557     " sll %2, 16, %%o1\n"
558     " subcc %%o0, %%o1, %%g0\n"
559     " addx %%g0, %%g0, %%o0 ! C flag\n"
560     " bl,a .+8\n"
561     " or %%o0, 0x08, %%o0 ! N flag\n"
562     " bz,a .+8\n"
563     " or %%o0, 0x04, %%o0 ! Z flag\n"
564     " bvs,a .+8\n"
565     " or %%o0, 0x02, %%o0 ! V flag\n"
566     " stb %%o0, [%0]\n"
567     : /* no outputs */
568     : "r" (flags), "r" (dst), "r" (src)
569     : "cc", "o0", "o1"
570     );
571     }
572    
573     static inline void sparc_v8_flag_cmp_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
574     {
575     __asm__ ("\n"
576     " subcc %1, %2, %%o1\n"
577     " srl %%o1, 31, %%o0\n"
578     " sll %%o0, 3, %%o0\n"
579     " addx %%o0, %%g0, %%o0\n"
580     " bvs,a .+8\n"
581     " or %%o0, 0x02, %%o0\n"
582     " subcc %%g0, %%o1, %%g0\n"
583     " addx %%g0, 7, %%o1\n"
584     " and %%o1, 0x04, %%o1\n"
585     " or %%o0, %%o1, %%o0\n"
586     " stb %%o0, [%0]\n"
587     : /* no outputs */
588     : "r" (flags), "r" (dst), "r" (src)
589     : "cc", "o0", "o1"
590     );
591 cebix 1.4 }
592    
593     static inline uae_u32 sparc_v8_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
594     {
595     uae_u32 value;
596     __asm__ ("\n"
597     " ldub [%1 + 1], %%o1 ! Get the X Flag\n"
598     " subcc %%g0, %%o1, %%g0 ! Set the SPARC carry flag, if X set\n"
599     " addxcc %2, %3, %0\n"
600     : "=&r" (value)
601     : "r" (flags), "r" (dst), "r" (src)
602     : "cc", "o0", "o1"
603     );
604     return value;
605     }
606    
607     #if 0
608     VERY SLOW...
609     static inline uae_u32 sparc_v8_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
610     {
611     uae_u32 value;
612     __asm__ ("\n"
613     " sll %2, 24, %%o0\n"
614     " sll %3, 24, %%o1\n"
615     " addcc %%o0, %%o1, %%o0\n"
616     " addx %%g0, %%g0, %%o1 ! X,C flags\n"
617     " bvs,a .+8\n"
618     " or %%o1, 0x02, %%o1 ! V flag\n"
619     " ldub [%1 + 1], %%o2\n"
620     " subcc %%g0, %%o2, %%g0\n"
621     " addx %%g0, %%g0, %%o2\n"
622     " sll %%o2, 24, %%o2\n"
623     " addcc %%o0, %%o2, %%o0\n"
624     " srl %%o0, 24, %0\n"
625     " addx %%g0, %%g0, %%o2\n"
626     " or %%o1, %%o2, %%o1 ! update X,C flags\n"
627     " bl,a .+8\n"
628     " or %%o1, 0x08, %%o1 ! N flag\n"
629     " ldub [%1], %%o0 ! retreive the old NZVC flags (XXX)\n"
630     " bvs,a .+8\n"
631     " or %%o1, 0x02, %%o1 ! update V flag\n"
632     " and %%o0, 0x04, %%o0 ! (XXX) but keep only Z flag\n"
633     " and %%o1, 1, %%o2 ! keep C flag in %%o2\n"
634     " bnz,a .+8\n"
635     " or %%g0, %%g0, %%o0 ! Z flag cleared if non-zero result\n"
636     " stb %%o2, [%1 + 1] ! store the X flag\n"
637     " or %%o1, %%o0, %%o1\n"
638     " stb %%o1, [%1]\n"
639     : "=&r" (value)
640     : "r" (flags), "r" (dst), "r" (src)
641     : "cc", "o0", "o1", "o2"
642     );
643     return value;
644     }
645     #endif
646    
647     static inline uae_u32 sparc_v8_flag_addx_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
648     {
649     uae_u32 value;
650     __asm__ ("\n"
651     " ldub [%1 + 1], %%o0 ! Get the X Flag\n"
652     " subcc %%g0, %%o0, %%g0 ! Set the SPARC carry flag, if X set\n"
653     " addxcc %2, %3, %0\n"
654     " ldub [%1], %%o0 ! retreive the old NZVC flags\n"
655     " and %%o0, 0x04, %%o0 ! but keep only Z flag\n"
656     " addx %%o0, %%g0, %%o0 ! X,C flags\n"
657     " bl,a .+8\n"
658     " or %%o0, 0x08, %%o0 ! N flag\n"
659     " bvs,a .+8\n"
660     " or %%o0, 0x02, %%o0 ! V flag\n"
661     " bnz,a .+8\n"
662     " and %%o0, 0x0B, %%o0 ! Z flag cleared if result is non-zero\n"
663     " stb %%o0, [%1]\n"
664     " stb %%o0, [%1 + 1]\n"
665     : "=&r" (value)
666     : "r" (flags), "r" (dst), "r" (src)
667     : "cc", "o0"
668     );
669     return value;
670 cebix 1.2 }
671    
672     #endif /* SPARC_V8_ASSEMBLY */
673    
674     #ifdef SPARC_V9_ASSEMBLY
675    
676     static inline uae_u32 sparc_v9_flag_add_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
677     {
678     uae_u32 value;
679     __asm__ ("\n"
680     " sll %2, 24, %%o0\n"
681     " sll %3, 24, %%o1\n"
682     " addcc %%o0, %%o1, %%o0\n"
683     " rd %%ccr, %%o1\n"
684     " srl %%o0, 24, %0\n"
685     " stb %%o1, [%1]\n"
686     " stb %%o1, [%1+1]\n"
687     : "=&r" (value)
688     : "r" (flags), "r" (dst), "r" (src)
689     : "cc", "o0", "o1"
690     );
691     return value;
692     }
693    
694     static inline uae_u32 sparc_v9_flag_add_16(flag_struct *flags, uae_u32 src, uae_u32 dst)
695     {
696     uae_u32 value;
697     __asm__ ("\n"
698     " sll %2, 16, %%o0\n"
699     " sll %3, 16, %%o1\n"
700     " addcc %%o0, %%o1, %%o0\n"
701     " rd %%ccr, %%o1\n"
702     " srl %%o0, 16, %0\n"
703     " stb %%o1, [%1]\n"
704     " stb %%o1, [%1+1]\n"
705     : "=&r" (value)
706     : "r" (flags), "r" (dst), "r" (src)
707     : "cc", "o0", "o1"
708     );
709     return value;
710     }
711    
712     static inline uae_u32 sparc_v9_flag_add_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
713     {
714     uae_u32 value;
715     __asm__ ("\n"
716     " addcc %2, %3, %0\n"
717     " rd %%ccr, %%o0\n"
718     " stb %%o0, [%1]\n"
719     " stb %%o0, [%1+1]\n"
720     : "=&r" (value)
721     : "r" (flags), "r" (dst), "r" (src)
722     : "cc", "o0"
723     );
724     return value;
725     }
726    
727     static inline uae_u32 sparc_v9_flag_sub_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
728     {
729     uae_u32 value;
730     __asm__ ("\n"
731     " sll %2, 24, %%o0\n"
732     " sll %3, 24, %%o1\n"
733     " subcc %%o0, %%o1, %%o0\n"
734     " rd %%ccr, %%o1\n"
735     " srl %%o0, 24, %0\n"
736     " stb %%o1, [%1]\n"
737     " stb %%o1, [%1+1]\n"
738     : "=&r" (value)
739     : "r" (flags), "r" (dst), "r" (src)
740     : "cc", "o0", "o1"
741     );
742     return value;
743     }
744    
745     static inline uae_u32 sparc_v9_flag_sub_16(flag_struct *flags, uae_u32 src, uae_u32 dst)
746     {
747     uae_u32 value;
748     __asm__ ("\n"
749     " sll %2, 16, %%o0\n"
750     " sll %3, 16, %%o1\n"
751     " subcc %%o0, %%o1, %%o0\n"
752     " rd %%ccr, %%o1\n"
753     " srl %%o0, 16, %0\n"
754     " stb %%o1, [%1]\n"
755     " stb %%o1, [%1+1]\n"
756     : "=&r" (value)
757     : "r" (flags), "r" (dst), "r" (src)
758     : "cc", "o0", "o1"
759     );
760     return value;
761     }
762    
763     static inline uae_u32 sparc_v9_flag_sub_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
764     {
765     uae_u32 value;
766     __asm__ ("\n"
767     " subcc %2, %3, %0\n"
768     " rd %%ccr, %%o0\n"
769     " stb %%o0, [%1]\n"
770     " stb %%o0, [%1+1]\n"
771     : "=&r" (value)
772     : "r" (flags), "r" (dst), "r" (src)
773     : "cc", "o0"
774     );
775     return value;
776     }
777    
778     static inline void sparc_v9_flag_cmp_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
779     {
780     __asm__ ("\n"
781     " sll %1, 24, %%o0\n"
782     " sll %2, 24, %%o1\n"
783     " subcc %%o0, %%o1, %%g0\n"
784     " rd %%ccr, %%o0\n"
785     " stb %%o0, [%0]\n"
786     : /* no outputs */
787     : "r" (flags), "r" (dst), "r" (src)
788     : "cc", "o0", "o1"
789     );
790     }
791    
792     static inline void sparc_v9_flag_cmp_16(flag_struct *flags, uae_u32 src, uae_u32 dst)
793     {
794     __asm__ ("\n"
795     " sll %1, 16, %%o0\n"
796     " sll %2, 16, %%o1\n"
797     " subcc %%o0, %%o1, %%g0\n"
798     " rd %%ccr, %%o0\n"
799     " stb %%o0, [%0]\n"
800     : /* no outputs */
801     : "r" (flags), "r" (dst), "r" (src)
802     : "cc", "o0", "o1"
803     );
804     }
805    
806     static inline void sparc_v9_flag_cmp_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
807     {
808     __asm__ ("\n"
809     " subcc %1, %2, %%g0\n"
810     #if 0
811     " subcc %1, %2, %%o1\n"
812     " srl %%o1, 31, %%o0\n"
813     " sll %%o0, 3, %%o0\n"
814     " addx %%o0, %%g0, %%o0\n"
815     " bvs,a .+8\n"
816     " or %%o0, 0x02, %%o0\n"
817     " subcc %%g0, %%o1, %%g0\n"
818     " addx %%g0, 7, %%o1\n"
819     " and %%o1, 0x04, %%o1\n"
820     " or %%o0, %%o1, %%o0\n"
821     #endif
822     #if 0
823     " subcc %1, %2, %%o1\n"
824     " srl %%o1, 31, %%o0\n"
825     " sll %%o0, 3, %%o0\n"
826     " addx %%o0, %%g0, %%o0\n"
827     " bvs,pt,a .+8\n"
828     " or %%o0, 0x02, %%o0\n"
829     " subcc %%g0, %%o1, %%g0\n"
830     " addx %%g0, 7, %%o1\n"
831     " and %%o1, 0x04, %%o1\n"
832     " or %%o0, %%o1, %%o0\n"
833     " stb %%o0, [%0]\n"
834     #endif
835     " rd %%ccr, %%o0\n"
836     " stb %%o0, [%0]\n"
837     : /* no outputs */
838     : "r" (flags), "r" (dst), "r" (src)
839     : "cc", "o0", "o1"
840     );
841     }
842    
843     #if 1
844     static inline void sparc_v9_flag_test_8(flag_struct *flags, uae_u32 val)
845     {
846     __asm__ ("\n"
847     " sll %1, 24, %%o0\n"
848     " subcc %%o0, %%g0, %%g0\n"
849     " rd %%ccr, %%o0\n"
850     " stb %%o0, [%0]\n"
851     : /* no outputs */
852     : "r" (flags), "r" (val)
853     : "cc", "o0"
854     );
855     }
856    
857     static inline void sparc_v9_flag_test_16(flag_struct *flags, uae_u32 val)
858     {
859     __asm__ ("\n"
860     " sll %1, 16, %%o0\n"
861     " subcc %%o0, %%g0, %%g0\n"
862     " rd %%ccr, %%o0\n"
863     " stb %%o0, [%0]\n"
864     : /* no outputs */
865     : "r" (flags), "r" (val)
866     : "cc", "o0"
867     );
868     }
869    
870     static inline void sparc_v9_flag_test_32(flag_struct *flags, uae_u32 val)
871     {
872     __asm__ ("\n"
873     " subcc %1, %%g0, %%g0\n"
874     " rd %%ccr, %%o0\n"
875     " stb %%o0, [%0]\n"
876     : /* no outputs */
877     : "r" (flags), "r" (val)
878     : "cc", "o0"
879     );
880     }
881     #else
882     static inline void sparc_v9_flag_test_8(flag_struct *flags, uae_u32 val)
883     {
884     __asm__ ("\n"
885     " sll %1, 24, %%o0\n"
886     " subcc %%o0, %%g0, %%o1\n"
887     " srl %%o1, 31, %%o0\n"
888     " sll %%o0, 3, %%o0\n"
889     " addx %%o0, %%g0, %%o0\n"
890     " bvs,a .+8\n"
891     " or %%o0, 0x02, %%o0\n"
892     " subcc %%g0, %%o1, %%g0\n"
893     " addx %%g0, 7, %%o1\n"
894     " and %%o1, 0x04, %%o1\n"
895     " or %%o0, %%o1, %%o0\n"
896     " stb %%o0, [%0]\n"
897     : /* no outputs */
898     : "r" (flags), "r" (val)
899     : "cc", "o0", "o1"
900     );
901     }
902    
903     static inline void sparc_v9_flag_test_16(flag_struct *flags, uae_u32 val)
904     {
905     __asm__ ("\n"
906     " sll %1, 16, %%o0\n"
907     " subcc %%o0, %%g0, %%o1\n"
908     " srl %%o1, 31, %%o0\n"
909     " sll %%o0, 3, %%o0\n"
910     " addx %%o0, %%g0, %%o0\n"
911     " bvs,a .+8\n"
912     " or %%o0, 0x02, %%o0\n"
913     " subcc %%g0, %%o1, %%g0\n"
914     " addx %%g0, 7, %%o1\n"
915     " and %%o1, 0x04, %%o1\n"
916     " or %%o0, %%o1, %%o0\n"
917     " stb %%o0, [%0]\n"
918     : /* no outputs */
919     : "r" (flags), "r" (val)
920     : "cc", "o0", "o1"
921     );
922     }
923    
924     static inline void sparc_v9_flag_test_32(flag_struct *flags, uae_u32 val)
925     {
926     __asm__ ("\n"
927     " subcc %1, %%g0, %%o1\n"
928     " srl %%o1, 31, %%o0\n"
929     " sll %%o0, 3, %%o0\n"
930     " addx %%o0, %%g0, %%o0\n"
931     " bvs,a .+8\n"
932     " or %%o0, 0x02, %%o0\n"
933     " subcc %%g0, %%o1, %%g0\n"
934     " addx %%g0, 7, %%o1\n"
935     " and %%o1, 0x04, %%o1\n"
936     " or %%o0, %%o1, %%o0\n"
937     " stb %%o0, [%0]\n"
938     : /* no outputs */
939     : "r" (flags), "r" (val)
940     : "cc", "o0", "o1"
941     );
942     }
943     #endif
944    
945     static inline uae_u32 sparc_v9_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst)
946     {
947     uae_u32 value;
948     __asm__ ("\n"
949     " ldub [%1 + 1], %%o1 ! Get the X Flag\n"
950     " subcc %%g0, %%o1, %%g0 ! Set the SPARC carry flag, if X set\n"
951     " addxcc %2, %3, %0\n"
952     : "=&r" (value)
953     : "r" (flags), "r" (dst), "r" (src)
954     : "cc", "o0", "o1"
955     );
956     return value;
957     }
958    
959     static inline uae_u32 sparc_v9_flag_addx_32(flag_struct *flags, uae_u32 src, uae_u32 dst)
960     {
961     uae_u32 value;
962     __asm__ ("\n"
963     " ldub [%1 + 1], %%o0 ! Get the X Flag\n"
964     " subcc %%g0, %%o0, %%g0 ! Set the SPARC carry flag, if X set\n"
965     " addxcc %2, %3, %0\n"
966     " ldub [%1], %%o0 ! retreive the old NZVC flags\n"
967     " and %%o0, 0x04, %%o0 ! but keep only Z flag\n"
968     " addx %%o0, %%g0, %%o0 ! X,C flags\n"
969     " bl,a .+8\n"
970     " or %%o0, 0x08, %%o0 ! N flag\n"
971     " bvs,a .+8\n"
972     " or %%o0, 0x02, %%o0 ! V flag\n"
973     " bnz,a .+8\n"
974     " and %%o0, 0x0B, %%o0 ! Z flag cleared if result is non-zero\n"
975     " stb %%o0, [%1]\n"
976     " stb %%o0, [%1 + 1]\n"
977     : "=&r" (value)
978     : "r" (flags), "r" (dst), "r" (src)
979     : "cc", "o0"
980     );
981     return value;
982     }
983    
984     #endif /* SPARC_V9_ASSEMBLY */
985 cebix 1.1
986 gbeauche 1.5 #endif
987    
988 cebix 1.1 #else
989    
990     struct flag_struct {
991     unsigned int c;
992     unsigned int z;
993     unsigned int n;
994     unsigned int v;
995     unsigned int x;
996     };
997    
998     extern struct flag_struct regflags;
999    
1000     #define ZFLG (regflags.z)
1001     #define NFLG (regflags.n)
1002     #define CFLG (regflags.c)
1003     #define VFLG (regflags.v)
1004     #define XFLG (regflags.x)
1005    
1006 gbeauche 1.5 #define SET_CFLG(x) (CFLG = (x))
1007     #define SET_NFLG(x) (NFLG = (x))
1008     #define SET_VFLG(x) (VFLG = (x))
1009     #define SET_ZFLG(x) (ZFLG = (x))
1010     #define SET_XFLG(x) (XFLG = (x))
1011    
1012     #define GET_CFLG CFLG
1013     #define GET_NFLG NFLG
1014     #define GET_VFLG VFLG
1015     #define GET_ZFLG ZFLG
1016     #define GET_XFLG XFLG
1017    
1018     #define CLEAR_CZNV do { \
1019     SET_CFLG (0); \
1020     SET_ZFLG (0); \
1021     SET_NFLG (0); \
1022     SET_VFLG (0); \
1023     } while (0)
1024    
1025     #define COPY_CARRY (SET_XFLG (GET_CFLG))
1026    
1027 cebix 1.1 static __inline__ int cctrue(const int cc)
1028     {
1029     switch(cc){
1030     case 0: return 1; /* T */
1031     case 1: return 0; /* F */
1032     case 2: return !CFLG && !ZFLG; /* HI */
1033     case 3: return CFLG || ZFLG; /* LS */
1034     case 4: return !CFLG; /* CC */
1035     case 5: return CFLG; /* CS */
1036     case 6: return !ZFLG; /* NE */
1037     case 7: return ZFLG; /* EQ */
1038     case 8: return !VFLG; /* VC */
1039     case 9: return VFLG; /* VS */
1040     case 10:return !NFLG; /* PL */
1041     case 11:return NFLG; /* MI */
1042     case 12:return NFLG == VFLG; /* GE */
1043     case 13:return NFLG != VFLG; /* LT */
1044     case 14:return !ZFLG && (NFLG == VFLG); /* GT */
1045     case 15:return ZFLG || (NFLG != VFLG); /* LE */
1046     }
1047     return 0;
1048     }
1049    
1050 gbeauche 1.5 #endif /* OPTIMIZED_FLAGS */
1051    
1052     #endif /* M68K_FLAGS_H */