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Diffstat (limited to 'sys/gnu/i386/fpemul/Changelog')
| -rw-r--r-- | sys/gnu/i386/fpemul/Changelog | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sys/gnu/i386/fpemul/Changelog b/sys/gnu/i386/fpemul/Changelog new file mode 100644 index 0000000..a2fbccd1 --- /dev/null +++ b/sys/gnu/i386/fpemul/Changelog @@ -0,0 +1,36 @@ +This file contains the changes made to W. Metzenthem's 387 FPU +emulator to make it work under NetBSD. + +a, Changes to make it compile: + + 1 - Changed the #include's to get the appropriate .h files. + 2 - Renamed .S to .s, to satisfy the kernel Makefile. + 3 - Changed the C++ style // comments to /* */ + 4 - Changed the FPU_ORIG_EIP macro. A letter from bde included + in the package suggested using tf_isp for using instead + of the linux __orig_eip. This later turned out to interfere + with the user stack, so i created a separate variable, stored + in the i387_union. + 5 - Changed the get_fs_.. put_fs_.. fns to fubyte,fuword,subyte, + suword. + 6 - Removed the verify_area fns. I don't really know what they do, + i suppose they verify access to memory. The sufu routines + should do this. + +b, Changes to make it work: + + 1 - Made math_emulate() to return 0 when successful, so trap() won't + try to generate a signal. + 2 - Changed the size of the save87 struct in /sys/arch/i387/include/ + npx.h to accomodate the i387_union. + +d, Other changes: + + 1 - Removed obsolate and/or linux specific stuff. + 2 - Changed the RE_ENTRANT_CHECK_[ON|OFF] macro to + REENTRANT_CHECK([ON|OFF]) so indent can grok it. + 3 - Re-indented to Berkeley style. + 4 - Limited max no of lookaheads. LOOKAHEAD_LIMIT in fpu_entry.c + + + Szabolcs Szigeti (pink@fsz.bme.hu) |
