1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
3 M68000 Hi-Performance Microprocessor Division
4 M68060 Software Package
5 Production Release P1.00 -- October 10, 1994
7 M68060 Software Package Copyright © 1993, 1994 Motorola Inc. All rights reserved.
9 THE SOFTWARE is provided on an "AS IS" basis and without warranty.
10 To the maximum extent permitted by applicable law,
11 MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
12 INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
13 and any warranty against infringement with regard to the SOFTWARE
14 (INCLUDING ANY MODIFIED VERSIONS THEREOF) and any accompanying written materials.
16 To the maximum extent permitted by applicable law,
17 IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
18 (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS,
19 BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS)
20 ARISING OF THE USE OR INABILITY TO USE THE SOFTWARE.
21 Motorola assumes no responsibility for the maintenance and support of the SOFTWARE.
23 You are hereby granted a copyright license to use, modify, and distribute the SOFTWARE
24 so long as this entire notice is retained without alteration in any modified and/or
25 redistributed versions, and that such modified versions are clearly identified as such.
26 No licenses are granted by implication, estoppel or otherwise under any patents
27 or trademarks of Motorola, Inc.
28 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
30 68060 FLOATING-POINT SOFTWARE PACKAGE (Library version)
31 --------------------------------------------------------
33 The file fplsp.sa contains the "Library version" of the
34 68060SP Floating-Point Software Package. The routines
35 included in this module can be used to emulate the
36 FP instructions not implemented in 68060 hardware. These
37 instructions normally take exception vector #11
38 "FP Unimplemented Instruction".
40 By re-compiling a program that uses these instructions, and
41 making subroutine calls in place of the unimplemented
42 instructions, a program can avoid the overhead associated
43 with taking the exception.
47 The file fplsp.sa is essentially a hexadecimal image of the
48 release package. This is the ONLY format which will be supported.
49 The hex image was created by assembling the source code and
50 then converting the resulting binary output image into an
51 ASCII text file. The hexadecimal numbers are listed
52 using the Motorola Assembly Syntax assembler directive "dc.l"
53 (define constant longword). The file can be converted to other
54 assembly syntaxes by using any word processor with a global
55 search and replace function.
57 To assist in assembling and linking this module with other modules,
58 the installer should add a symbolic label to the top of the file.
59 This will allow calling routines to access the entry points
62 The source code fplsp.s has also been included but only for
63 documentation purposes.
65 Release file structure:
66 -----------------------
67 The file fplsp.sa contains an "Entry-Point" section and a
68 code section. The FPLSP has no "Call-Out" section. The first section
69 is the "Entry-Point" section. In order to access a function in the
70 package, a program must "bsr" or "jsr" to the location listed
71 below in "68060FPLSP entry points" that corresponds to the desired
72 function. A branch instruction located at the selected entry point
73 within the package will then enter the correct emulation code routine.
75 The entry point addresses at the beginning of the package will remain
76 fixed so that a program calling the routines will not have to be
77 re-compiled with every new 68060FPLSP release.
79 There are 3 entry-points for each instruction type: single precision,
80 double precision, and extended precision.
82 As an example, the "fsin" library instruction can be passed an
83 extended precision operand if program executes:
87 fmovm.x &0x01,-(%sp) # pass operand on stack
88 bsr.l _060FPLSP_TOP+0x1a8 # branch to fsin routine
89 add.l &0xc,%sp # clear operand from stack
91 Upon return, fp0 holds the correct result. The FPSR is
92 set correctly. The FPCR is unchanged. The FPIAR is undefined.
94 Another example. This time, a dyadic operation:
98 fmov.s %fp1,-(%sp) # pass src operand
99 fmov.s %fp0,-(%sp) # pass dst operand
100 bsr.l _060FPLSP_TOP+0x168 # branch to frem routine
101 addq.l &0x8,%sp # clear operands from stack
103 Again, the result is returned in fp0. Note that BOTH operands
104 are passed in single precision format.
108 The package takes exceptions according to the FPCR value upon subroutine
109 entry. If an exception should be reported, then the package forces
110 this exception using implemented floating-point instructions.
111 For example, if the instruction being emulated should cause a
112 floating-point Operand Error exception, then the library routine
113 executes an FMUL of a zero and an infinity to force the OPERR
114 exception. Although the FPIAR will be undefined for the enabled
115 Operand Error exception handler, the user will at least be able
116 to record that the event occurred.
120 The package does not attempt to correctly emulate instructions
121 with Signalling NAN inputs. Use of SNANs should be avoided with
124 The fabs/fadd/fdiv/fint/fintrz/fmul/fneg/fsqrt/fsub entry points
125 are provided for the convenience of older compilers that make
126 subroutine calls for all fp instructions. The code does NOT emulate
127 the instruction but rather simply executes it.
129 68060FPLSP entry points:
130 ------------------------
132 0x000: _060LSP__facoss_
133 0x008: _060LSP__facosd_
134 0x010: _060LSP__facosx_
135 0x018: _060LSP__fasins_
136 0x020: _060LSP__fasind_
137 0x028: _060LSP__fasinx_
138 0x030: _060LSP__fatans_
139 0x038: _060LSP__fatand_
140 0x040: _060LSP__fatanx_
141 0x048: _060LSP__fatanhs_
142 0x050: _060LSP__fatanhd_
143 0x058: _060LSP__fatanhx_
144 0x060: _060LSP__fcoss_
145 0x068: _060LSP__fcosd_
146 0x070: _060LSP__fcosx_
147 0x078: _060LSP__fcoshs_
148 0x080: _060LSP__fcoshd_
149 0x088: _060LSP__fcoshx_
150 0x090: _060LSP__fetoxs_
151 0x098: _060LSP__fetoxd_
152 0x0a0: _060LSP__fetoxx_
153 0x0a8: _060LSP__fetoxm1s_
154 0x0b0: _060LSP__fetoxm1d_
155 0x0b8: _060LSP__fetoxm1x_
156 0x0c0: _060LSP__fgetexps_
157 0x0c8: _060LSP__fgetexpd_
158 0x0d0: _060LSP__fgetexpx_
159 0x0d8: _060LSP__fgetmans_
160 0x0e0: _060LSP__fgetmand_
161 0x0e8: _060LSP__fgetmanx_
162 0x0f0: _060LSP__flog10s_
163 0x0f8: _060LSP__flog10d_
164 0x100: _060LSP__flog10x_
165 0x108: _060LSP__flog2s_
166 0x110: _060LSP__flog2d_
167 0x118: _060LSP__flog2x_
168 0x120: _060LSP__flogns_
169 0x128: _060LSP__flognd_
170 0x130: _060LSP__flognx_
171 0x138: _060LSP__flognp1s_
172 0x140: _060LSP__flognp1d_
173 0x148: _060LSP__flognp1x_
174 0x150: _060LSP__fmods_
175 0x158: _060LSP__fmodd_
176 0x160: _060LSP__fmodx_
177 0x168: _060LSP__frems_
178 0x170: _060LSP__fremd_
179 0x178: _060LSP__fremx_
180 0x180: _060LSP__fscales_
181 0x188: _060LSP__fscaled_
182 0x190: _060LSP__fscalex_
183 0x198: _060LSP__fsins_
184 0x1a0: _060LSP__fsind_
185 0x1a8: _060LSP__fsinx_
186 0x1b0: _060LSP__fsincoss_
187 0x1b8: _060LSP__fsincosd_
188 0x1c0: _060LSP__fsincosx_
189 0x1c8: _060LSP__fsinhs_
190 0x1d0: _060LSP__fsinhd_
191 0x1d8: _060LSP__fsinhx_
192 0x1e0: _060LSP__ftans_
193 0x1e8: _060LSP__ftand_
194 0x1f0: _060LSP__ftanx_
195 0x1f8: _060LSP__ftanhs_
196 0x200: _060LSP__ftanhd_
197 0x208: _060LSP__ftanhx_
198 0x210: _060LSP__ftentoxs_
199 0x218: _060LSP__ftentoxd_
200 0x220: _060LSP__ftentoxx_
201 0x228: _060LSP__ftwotoxs_
202 0x230: _060LSP__ftwotoxd_
203 0x238: _060LSP__ftwotoxx_
205 0x240: _060LSP__fabss_
206 0x248: _060LSP__fabsd_
207 0x250: _060LSP__fabsx_
208 0x258: _060LSP__fadds_
209 0x260: _060LSP__faddd_
210 0x268: _060LSP__faddx_
211 0x270: _060LSP__fdivs_
212 0x278: _060LSP__fdivd_
213 0x280: _060LSP__fdivx_
214 0x288: _060LSP__fints_
215 0x290: _060LSP__fintd_
216 0x298: _060LSP__fintx_
217 0x2a0: _060LSP__fintrzs_
218 0x2a8: _060LSP__fintrzd_
219 0x2b0: _060LSP__fintrzx_
220 0x2b8: _060LSP__fmuls_
221 0x2c0: _060LSP__fmuld_
222 0x2c8: _060LSP__fmulx_
223 0x2d0: _060LSP__fnegs_
224 0x2d8: _060LSP__fnegd_
225 0x2e0: _060LSP__fnegx_
226 0x2e8: _060LSP__fsqrts_
227 0x2f0: _060LSP__fsqrtd_
228 0x2f8: _060LSP__fsqrtx_
229 0x300: _060LSP__fsubs_
230 0x308: _060LSP__fsubd_
231 0x310: _060LSP__fsubx_