Date: Sun, 25 Jul 1999 06:16:10 -0700 (PDT) From: Martin Cracauer <cracauer@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/conf LINT src/sys/i386/i386 trap.c userconfig.c src/sys/i386/include ieeefp.h trap.h src/sys/i386/isa npx.c Message-ID: <199907251316.GAA20660@freefall.freebsd.org>
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cracauer 1999/07/25 06:16:09 PDT
Modified files:
sys/i386/conf LINT
sys/i386/i386 trap.c userconfig.c
sys/i386/include ieeefp.h trap.h
sys/i386/isa npx.c
Log:
On FPU exceptions, pass a useful error code (one of the FPE_...
macros) to the signal handler, for old-style BSD signal handlers as
the second (int) argument, for SA_SIGINFO signal handlers as
siginfo_t->si_code. This is source-compatible with Solaris, except
that we have no <siginfo.h> (which isn't even mentioned in POSIX
1003.1b).
An rather complete example program is at
http://www3.cons.org/cracauer/freebsd-signal.c
This will be added to the regression tests in src/.
This commit also adds code to disable the (hardware) FPU from
userconfig, so that you can use a software FP emulator on a machine
that has hardware floating point. See LINT.
Revision Changes Path
1.619 +14 -8 src/sys/i386/conf/LINT
1.140 +4 -4 src/sys/i386/i386/trap.c
1.150 +3 -3 src/sys/i386/i386/userconfig.c
1.6 +2 -1 src/sys/i386/include/ieeefp.h
1.8 +19 -3 src/sys/i386/include/trap.h
1.74 +202 -24 src/sys/i386/isa/npx.c
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