diff options
Diffstat (limited to 'c/src/lib/libbsp/i386/pc386/make/custom/pc586-sse.cfg')
| -rw-r--r-- | c/src/lib/libbsp/i386/pc386/make/custom/pc586-sse.cfg | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/c/src/lib/libbsp/i386/pc386/make/custom/pc586-sse.cfg b/c/src/lib/libbsp/i386/pc386/make/custom/pc586-sse.cfg index ad6d94c657..0d100c2372 100644 --- a/c/src/lib/libbsp/i386/pc386/make/custom/pc586-sse.cfg +++ b/c/src/lib/libbsp/i386/pc386/make/custom/pc586-sse.cfg @@ -4,31 +4,7 @@ RTEMS_CPU_MODEL=pentium -# This contains the compiler options necessary to select the CPU model -# and enable architecture-specific features and extensions. - -# Note that the vanilla gcc multilibs for RTEMS are a joke. The -# variants only differ by a -mtune=xxx option which merely 'optimizes' -# for 'xxx' but does not use the full instruction set 'xxx' may implement. -# (fully bwd compatible with i386). -# -# I'd recommend to roll your own set of (useful) multilibs instead... -# -# Useful variants would be -# <default> (i386) (generic 386 with hard-float) -# -msoft-float (generic 386 with soft-float) -# -march=pentium4 (P4 with sse2) -# -# Note also: we give the -mtune=pentium option here only so that at least the -# variant optimized for pentium (w/o using any pentium-specific -# features) is used (assuming you use the vanilla RTEMS multilibs). -# -# And: The only sse-related feature the RTEMS support really needs is -# fxsave/fxrstor. You can build with -msse, -msse2 or -msse3, -# depending on your CPU. -# There are run-time checks resulting in a 'panic' if code -# compiled for e.g. -msse3 is executed on a CPU that only -# supports sse2, though. +# This configuration is useful for SMP testing on Qemu CPU_CFLAGS = -mtune=pentium -march=pentium -msse2 include $(RTEMS_ROOT)/make/custom/pc386.cfg |