mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 15:04:27 +08:00
96de0e252c
* Convert files to UTF-8.
* Also correct some people's names
(one example is Eißfeldt, which was found in a source file.
Given that the author used an ß at all in a source file
indicates that the real name has in fact a 'ß' and not an 'ss',
which is commonly used as a substitute for 'ß' when limited to
7bit.)
* Correct town names (Goettingen -> Göttingen)
* Update Eberhard Mönkeberg's address (http://lkml.org/lkml/2007/1/8/313)
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
296 lines
10 KiB
Plaintext
296 lines
10 KiB
Plaintext
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
|
|
M68000 Hi-Performance Microprocessor Division
|
|
M68060 Software Package
|
|
Production Release P1.00 -- October 10, 1994
|
|
|
|
M68060 Software Package Copyright © 1993, 1994 Motorola Inc. All rights reserved.
|
|
|
|
THE SOFTWARE is provided on an "AS IS" basis and without warranty.
|
|
To the maximum extent permitted by applicable law,
|
|
MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
|
|
INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
|
|
and any warranty against infringement with regard to the SOFTWARE
|
|
(INCLUDING ANY MODIFIED VERSIONS THEREOF) and any accompanying written materials.
|
|
|
|
To the maximum extent permitted by applicable law,
|
|
IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
|
|
(INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS,
|
|
BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS)
|
|
ARISING OF THE USE OR INABILITY TO USE THE SOFTWARE.
|
|
Motorola assumes no responsibility for the maintenance and support of the SOFTWARE.
|
|
|
|
You are hereby granted a copyright license to use, modify, and distribute the SOFTWARE
|
|
so long as this entire notice is retained without alteration in any modified and/or
|
|
redistributed versions, and that such modified versions are clearly identified as such.
|
|
No licenses are granted by implication, estoppel or otherwise under any patents
|
|
or trademarks of Motorola, Inc.
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
68060 FLOATING-POINT SOFTWARE PACKAGE (Kernel version)
|
|
-------------------------------------------------------
|
|
|
|
The file fpsp.sa contains the 68060 Floating-Point Software
|
|
Package. This package is essentially a set of exception handlers
|
|
that can be integrated into an operating system.
|
|
These exception handlers emulate Unimplemented FP instructions,
|
|
instructions using unimplemented data types, and instructions
|
|
using unimplemented addressing modes. In addition, this package
|
|
includes exception handlers to provide full IEEE-754 compliant
|
|
exception handling.
|
|
|
|
Release file format:
|
|
--------------------
|
|
The file fpsp.sa is essentially a hexadecimal image of the
|
|
release package. This is the ONLY format which will be supported.
|
|
The hex image was created by assembling the source code and
|
|
then converting the resulting binary output image into an
|
|
ASCII text file. The hexadecimal numbers are listed
|
|
using the Motorola Assembly Syntax assembler directive "dc.l"
|
|
(define constant longword). The file can be converted to other
|
|
assembly syntaxes by using any word processor with a global
|
|
search and replace function.
|
|
|
|
To assist in assembling and linking this module with other modules,
|
|
the installer should add a symbolic label to the top of the file.
|
|
This will allow calling routines to access the entry points
|
|
of this package.
|
|
|
|
The source code fpsp.s has also been included but only for
|
|
documentation purposes.
|
|
|
|
Release file structure:
|
|
-----------------------
|
|
|
|
(top of module)
|
|
-----------------
|
|
| | - 128 byte-sized section
|
|
(1) | Call-Out | - 4 bytes per entry (user fills these in)
|
|
| | - example routines in fskeleton.s
|
|
-----------------
|
|
| | - 8 bytes per entry
|
|
(2) | Entry Point | - user does "bra" or "jmp" to this address
|
|
| |
|
|
-----------------
|
|
| | - code section
|
|
(3) ~ ~
|
|
| |
|
|
-----------------
|
|
(bottom of module)
|
|
|
|
The first section of this module is the "Call-out" section. This section
|
|
is NOT INCLUDED in fpsp.sa (an example "Call-out" section is provided at
|
|
the end of the file fskeleton.s). The purpose of this section is to allow
|
|
the FPSP routines to reference external functions that must be provided
|
|
by the host operating system. This section MUST be exactly 128 bytes in
|
|
size. There are 32 fields, each 4 bytes in size. Each field corresponds
|
|
to a function required by the FPSP (these functions and their location are
|
|
listed in "68060FPSP call-outs" below). Each field entry should contain
|
|
the address of the corresponding function RELATIVE to the starting address
|
|
of the "call-out" section. The "Call-out" section must sit adjacent to the
|
|
fpsp.sa image in memory.
|
|
|
|
The second section, the "Entry-point" section, is used by external routines
|
|
to access the functions within the FPSP. Since the fpsp.sa hex file contains
|
|
no symbol names, this section contains function entry points that are fixed
|
|
with respect to the top of the package. The currently defined entry-points
|
|
are listed in section "68060 FPSP entry points" below. A calling routine
|
|
would simply execute a "bra" or "jmp" that jumped to the selected function
|
|
entry-point.
|
|
|
|
For example, if the 68060 hardware took a "Line-F Emulator" exception
|
|
(vector #11), the operating system should execute something similar to:
|
|
|
|
bra _060FPSP_TOP+128+48
|
|
|
|
(_060FPSP_TOP is the starting address of the "Call-out" section; the "Call-out"
|
|
section is 128 bytes long; and the F-Line FPSP handler entry point is located
|
|
48 bytes from the top of the "Entry-point" section.)
|
|
|
|
The third section is the code section. After entering through an "Entry-point",
|
|
the entry code jumps to the appropriate emulation code within the code section.
|
|
|
|
68060FPSP call-outs: (details in fskeleton.s)
|
|
--------------------
|
|
0x000: _060_real_bsun
|
|
0x004: _060_real_snan
|
|
0x008: _060_real_operr
|
|
0x00c: _060_real_ovfl
|
|
0x010: _060_real_unfl
|
|
0x014: _060_real_dz
|
|
0x018: _060_real_inex
|
|
0x01c: _060_real_fline
|
|
0x020: _060_real_fpu_disabled
|
|
0x024: _060_real_trap
|
|
0x028: _060_real_trace
|
|
0x02c: _060_real_access
|
|
0x030: _060_fpsp_done
|
|
|
|
0x034: (Motorola reserved)
|
|
0x038: (Motorola reserved)
|
|
0x03c: (Motorola reserved)
|
|
|
|
0x040: _060_imem_read
|
|
0x044: _060_dmem_read
|
|
0x048: _060_dmem_write
|
|
0x04c: _060_imem_read_word
|
|
0x050: _060_imem_read_long
|
|
0x054: _060_dmem_read_byte
|
|
0x058: _060_dmem_read_word
|
|
0x05c: _060_dmem_read_long
|
|
0x060: _060_dmem_write_byte
|
|
0x064: _060_dmem_write_word
|
|
0x068: _060_dmem_write_long
|
|
|
|
0x06c: (Motorola reserved)
|
|
0x070: (Motorola reserved)
|
|
0x074: (Motorola reserved)
|
|
0x078: (Motorola reserved)
|
|
0x07c: (Motorola reserved)
|
|
|
|
68060FPSP entry points:
|
|
-----------------------
|
|
0x000: _060_fpsp_snan
|
|
0x008: _060_fpsp_operr
|
|
0x010: _060_fpsp_ovfl
|
|
0x018: _060_fpsp_unfl
|
|
0x020: _060_fpsp_dz
|
|
0x028: _060_fpsp_inex
|
|
0x030: _060_fpsp_fline
|
|
0x038: _060_fpsp_unsupp
|
|
0x040: _060_fpsp_effadd
|
|
|
|
|
|
|
|
Miscellaneous:
|
|
--------------
|
|
|
|
_060_fpsp_snan:
|
|
----------------
|
|
- documented in 3.5 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_snan --|
|
|
|
|
|
always exits through _060_real_snan <----
|
|
|
|
_060_fpsp_operr:
|
|
----------------
|
|
- documented in 3.5 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_operr --|
|
|
|
|
|
always exits through _060_real_operr <-----
|
|
|
|
_060_fpsp_dz:
|
|
----------------
|
|
- documented in 3.7 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_dz --|
|
|
|
|
|
always exits through _060_real_dz <----
|
|
|
|
_060_fpsp_inex:
|
|
----------------
|
|
- documented in 3.6 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_inex --|
|
|
|
|
|
always exits through _060_real_inex <----
|
|
|
|
|
|
_060_fpsp_ovfl:
|
|
----------------
|
|
- documented in 3.4 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_ovfl --|
|
|
|
|
|
may exit through _060_real_inex <---|
|
|
or |
|
|
may exit through _060_real_ovfl <---|
|
|
or |
|
|
may exit through _060_fpsp_done <---|
|
|
|
|
_060_fpsp_unfl:
|
|
----------------
|
|
- documented in 3.4 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_unfl --|
|
|
|
|
|
may exit through _060_real_inex <---|
|
|
or |
|
|
may exit through _060_real_unfl <---|
|
|
or |
|
|
may exit through _060_fpsp_done <---|
|
|
|
|
|
|
_060_fpsp_fline:
|
|
-----------------
|
|
- not fully documented in 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_fline --|
|
|
|
|
|
-------------------------------------------
|
|
| | |
|
|
v v v
|
|
(unimplemented (fpu disabled) (possible F-line illegal)
|
|
stack frame) | v
|
|
| v special case "fmovecr"?
|
|
| exit through |
|
|
| _060_real_fpu_disabled -------------
|
|
| | |
|
|
| ^ v v
|
|
| | (yes) (no)
|
|
| | v v
|
|
| | fpu disabled? exit through
|
|
| | | _060_real_fline
|
|
v | -------------
|
|
| | | |
|
|
| | v v
|
|
| |-----------(yes) (no)
|
|
| |
|
|
|----<------------------------------------|
|
|
|
|
|
|
|
|
|----> may exit through _060_real_trace
|
|
|
|
|
|----> may exit through _060_real_trap
|
|
|
|
|
|----> may exit through _060_real_bsun
|
|
|
|
|
|----> may exit through _060_fpsp_done
|
|
|
|
|
|
_060_fpsp_unsupp:
|
|
------------------
|
|
- documented in 3.1 of 060SP spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_unsupp --|
|
|
|
|
|
|
|
|
may exit through _060_real_snan <----|
|
|
or |
|
|
may exit through _060_real_operr <----|
|
|
or |
|
|
may exit through _060_real_ovfl <----|
|
|
or |
|
|
may exit through _060_real_unfl <----|
|
|
or |
|
|
may exit through _060_real_inex <----|
|
|
or |
|
|
may exit through _060_real_trace <----|
|
|
or |
|
|
may exit through _060_fpsp_done <----|
|
|
|
|
|
|
_060_fpsp_effadd:
|
|
------------------
|
|
- documented in 3.3 of 060 spec.
|
|
- Basic flow:
|
|
exception taken ---> enter _060_fpsp_effadd --|
|
|
|
|
|
|
|
|
may exit through _060_real_trace <----|
|
|
or |
|
|
may exit through _060_real_fpu_disabled <----|
|
|
or |
|
|
may exit through _060_fpsp_done <----|
|