1 |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 |MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY G
3 |M68000 Hi-Performance Microprocessor Division
4 |M68060 Software Package
5 |Production Release P1.00 -- October 10, 1994
6 |
7 |M68060 Software Package Copyright © 1993, 19
8 |
9 |THE SOFTWARE is provided on an "AS IS" basis
10 |To the maximum extent permitted by applicable
11 |MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXP
12 |INCLUDING IMPLIED WARRANTIES OF MERCHANTABILI
13 |and any warranty against infringement with re
14 |(INCLUDING ANY MODIFIED VERSIONS THEREOF) and
15 |
16 |To the maximum extent permitted by applicable
17 |IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY
18 |(INCLUDING WITHOUT LIMITATION, DAMAGES FOR LO
19 |BUSINESS INTERRUPTION, LOSS OF BUSINESS INFOR
20 |ARISING OF THE USE OR INABILITY TO USE THE SO
21 |Motorola assumes no responsibility for the ma
22 |
23 |You are hereby granted a copyright license to
24 |so long as this entire notice is retained wit
25 |redistributed versions, and that such modifie
26 |No licenses are granted by implication, estop
27 |or trademarks of Motorola, Inc.
28 |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
29 | fskeleton.s
30 |
31 | This file contains:
32 | (1) example "Call-out"s
33 | (2) example package entry code
34 | (3) example "Call-out" table
35 |
36
37 #include <linux/linkage.h>
38
39 |################################
40 | (1) EXAMPLE CALL-OUTS #
41 | #
42 | _060_fpsp_done() #
43 | _060_real_ovfl() #
44 | _060_real_unfl() #
45 | _060_real_operr() #
46 | _060_real_snan() #
47 | _060_real_dz() #
48 | _060_real_inex() #
49 | _060_real_bsun() #
50 | _060_real_fline() #
51 | _060_real_fpu_disabled() #
52 | _060_real_trap() #
53 |################################
54
55 |
56 | _060_fpsp_done():
57 |
58 | This is the main exit point for the 68060 Fl
59 | Software Package. For a normal exit, all 060
60 | routine. The operating system can do system
61 | simply execute an "rte" as with the sample c
62 |
63 .global _060_fpsp_done
64 _060_fpsp_done:
65 bral _060_isp_done | do the same
66
67 |
68 | _060_real_ovfl():
69 |
70 | This is the exit point for the 060FPSP when
71 | is present. The routine below should point t
72 | for enabled overflow conditions. The excepti
73 | stack frame. The FP state frame holds the EX
74 |
75 | The sample routine below simply clears the e
76 | does an "rte".
77 |
78 .global _060_real_ovfl
79 _060_real_ovfl:
80 fsave -(%sp)
81 move.w #0x6000,0x2(%sp)
82 frestore (%sp)+
83 bral trap | jump to trap
84
85
86 |
87 | _060_real_unfl():
88 |
89 | This is the exit point for the 060FPSP when
90 | is present. The routine below should point t
91 | for enabled underflow conditions. The except
92 | stack frame. The FP state frame holds the EX
93 |
94 | The sample routine below simply clears the e
95 | does an "rte".
96 |
97 .global _060_real_unfl
98 _060_real_unfl:
99 fsave -(%sp)
100 move.w #0x6000,0x2(%sp)
101 frestore (%sp)+
102 bral trap | jump to trap
103
104 |
105 | _060_real_operr():
106 |
107 | This is the exit point for the 060FPSP when
108 | is present. The routine below should point t
109 | for enabled operand error exceptions. The ex
110 | stack frame. The FP state frame holds the so
111 | instruction.
112 |
113 | The sample routine below simply clears the e
114 | does an "rte".
115 |
116 .global _060_real_operr
117 _060_real_operr:
118 fsave -(%sp)
119 move.w #0x6000,0x2(%sp)
120 frestore (%sp)+
121 bral trap | jump to trap
122
123 |
124 | _060_real_snan():
125 |
126 | This is the exit point for the 060FPSP when
127 | is present. The routine below should point t
128 | for enabled signalling NaN exceptions. The e
129 | stack frame. The FP state frame holds the so
130 | instruction.
131 |
132 | The sample routine below simply clears the e
133 | does an "rte".
134 |
135 .global _060_real_snan
136 _060_real_snan:
137 fsave -(%sp)
138 move.w #0x6000,0x2(%sp)
139 frestore (%sp)+
140 bral trap | jump to trap
141
142 |
143 | _060_real_dz():
144 |
145 | This is the exit point for the 060FPSP when
146 | is present. The routine below should point t
147 | for enabled divide-by-zero exceptions. The e
148 | stack frame. The FP state frame holds the so
149 | instruction.
150 |
151 | The sample routine below simply clears the e
152 | does an "rte".
153 |
154 .global _060_real_dz
155 _060_real_dz:
156 fsave -(%sp)
157 move.w #0x6000,0x2(%sp)
158 frestore (%sp)+
159 bral trap | jump to trap
160
161 |
162 | _060_real_inex():
163 |
164 | This is the exit point for the 060FPSP when
165 | is present. The routine below should point t
166 | for enabled inexact exceptions. The exceptio
167 | stack frame. The FP state frame holds the so
168 | instruction.
169 |
170 | The sample routine below simply clears the e
171 | does an "rte".
172 |
173 .global _060_real_inex
174 _060_real_inex:
175 fsave -(%sp)
176 move.w #0x6000,0x2(%sp)
177 frestore (%sp)+
178 bral trap | jump to trap
179
180 |
181 | _060_real_bsun():
182 |
183 | This is the exit point for the 060FPSP when
184 | is present. The routine below should point t
185 | for enabled bsun exceptions. The exception s
186 | stack frame.
187 |
188 | The sample routine below clears the exceptio
189 | bit in the FPSR, and does an "rte". The inst
190 | bsun will now be re-executed but with the Na
191 |
192 .global _060_real_bsun
193 _060_real_bsun:
194 | fsave -(%sp)
195
196 fmove.l %fpsr,-(%sp)
197 andi.b #0xfe,(%sp)
198 fmove.l (%sp)+,%fpsr
199
200 bral trap | jump to trap
201
202 |
203 | _060_real_fline():
204 |
205 | This is the exit point for the 060FPSP when
206 | encountered. Three different types of except
207 | vector number 11: FP Unimplemented Instructi
208 | the FPU is disabled, and F-Line Illegal inst
209 | _fpsp_fline() distinguishes between the thre
210 | Illegals branch here.
211 |
212 .global _060_real_fline
213 _060_real_fline:
214 bral trap | jump to trap
215
216 |
217 | _060_real_fpu_disabled():
218 |
219 | This is the exit point for the 060FPSP when
220 | encountered. Three different types of except
221 | vector number 11: FP Unimplemented Instructi
222 | the FPU is disabled, and F-Line Illegal inst
223 | _fpsp_fline() distinguishes between the thre
224 | exceptions branch here.
225 |
226 | The sample code below enables the FPU, sets
227 | frame to the PC of the instruction causing t
228 | The execution of the instruction then procee
229 | unit.
230 |
231 .global _060_real_fpu_disabled
232 _060_real_fpu_disabled:
233 move.l %d0,-(%sp)
234 .long 0x4E7A0808
235 bclr #0x1,%d0
236 .long 0x4E7B0808
237 move.l (%sp)+,%d0
238
239 move.l 0xc(%sp),0x2(%sp)
240 rte
241
242 |
243 | _060_real_trap():
244 |
245 | This is the exit point for the 060FPSP when
246 | discovers that the trap condition is true an
247 | system handler for the trap exception vector
248 |
249 | The sample code below simply executes an "rt
250 |
251 .global _060_real_trap
252 _060_real_trap:
253 bral trap | jump to trap
254
255 |#############################################
256
257 |#################################
258 | (2) EXAMPLE PACKAGE ENTRY CODE #
259 |#################################
260
261 .global _060_fpsp_snan
262 _060_fpsp_snan:
263 bra.l _FP_CALL_TOP+0x80+0x00
264
265 .global _060_fpsp_operr
266 _060_fpsp_operr:
267 bra.l _FP_CALL_TOP+0x80+0x08
268
269 .global _060_fpsp_ovfl
270 _060_fpsp_ovfl:
271 bra.l _FP_CALL_TOP+0x80+0x10
272
273 .global _060_fpsp_unfl
274 _060_fpsp_unfl:
275 bra.l _FP_CALL_TOP+0x80+0x18
276
277 .global _060_fpsp_dz
278 _060_fpsp_dz:
279 bra.l _FP_CALL_TOP+0x80+0x20
280
281 .global _060_fpsp_inex
282 _060_fpsp_inex:
283 bra.l _FP_CALL_TOP+0x80+0x28
284
285 .global _060_fpsp_fline
286 _060_fpsp_fline:
287 bra.l _FP_CALL_TOP+0x80+0x30
288
289 .global _060_fpsp_unsupp
290 _060_fpsp_unsupp:
291 bra.l _FP_CALL_TOP+0x80+0x38
292
293 .global _060_fpsp_effadd
294 _060_fpsp_effadd:
295 bra.l _FP_CALL_TOP+0x80+0x40
296
297 |#############################################
298
299 |###############################
300 | (3) EXAMPLE CALL-OUT SECTION #
301 |###############################
302
303 | The size of this section MUST be 128 bytes!!
304
305 _FP_CALL_TOP:
306 .long _060_real_bsun - _FP_
307 .long _060_real_snan - _FP_
308 .long _060_real_operr - _FP_
309 .long _060_real_ovfl - _FP_
310 .long _060_real_unfl - _FP_
311 .long _060_real_dz - _FP_
312 .long _060_real_inex - _FP_
313 .long _060_real_fline - _FP_
314 .long _060_real_fpu_disabled - _FP_
315 .long _060_real_trap - _FP_
316 .long _060_real_trace - _FP_
317 .long _060_real_access - _FP_
318 .long _060_fpsp_done - _FP_
319
320 .long 0x00000000, 0x00000000, 0x0000
321
322 .long _060_imem_read - _FP_
323 .long _060_dmem_read - _FP_
324 .long _060_dmem_write - _FP_
325 .long _060_imem_read_word - _FP_
326 .long _060_imem_read_long - _FP_
327 .long _060_dmem_read_byte - _FP_
328 .long _060_dmem_read_word - _FP_
329 .long _060_dmem_read_long - _FP_
330 .long _060_dmem_write_byte - _FP_
331 .long _060_dmem_write_word - _FP_
332 .long _060_dmem_write_long - _FP_
333
334 .long 0x00000000
335
336 .long 0x00000000, 0x00000000, 0x0000
337
338 |#############################################
339
340 | 060 FPSP KERNEL PACKAGE NEEDS TO GO HERE!!!
341
342 #include "fpsp.sa"
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