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xen-changelog
[Xen-changelog] add in kern.mk to sparse tree to disable compiling with
ChangeSet 1.1838, 2005/04/18 22:59:22+01:00, iap10@xxxxxxxxxxxxxxxxxxxxx
add in kern.mk to sparse tree to disable compiling with -std=c99
anonymous unions (used in xen public headers) are not compliant
Signed-off-by: Kip Macy <kmacy@xxxxxxxxxxx>
Signed-off-by: ian@xxxxxxxxxxxxx
kern.mk | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 100 insertions(+)
diff -Nru a/freebsd-5.3-xen-sparse/conf/kern.mk
b/freebsd-5.3-xen-sparse/conf/kern.mk
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/freebsd-5.3-xen-sparse/conf/kern.mk 2005-04-18 21:08:49 -04:00
@@ -0,0 +1,100 @@
+# $FreeBSD: src/sys/conf/kern.mk,v 1.42 2004/05/14 13:35:46 cognet Exp $
+
+#
+# Warning flags for compiling the kernel and components of the kernel.
+#
+# Note that the newly added -Wcast-qual is responsible for generating
+# most of the remaining warnings. Warnings introduced with -Wall will
+# also pop up, but are easier to fix.
+.if ${CC} == "icc"
+#CWARNFLAGS= -w2 # use this if you are terribly bored
+CWARNFLAGS=
+.else
+CWARNFLAGS?= -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
+ -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \
+ -fformat-extensions
+.endif
+# -std=c99 anonymous unions are non-compliant
+#
+# The following flags are next up for working on:
+# -W
+
+#
+# On the i386, do not align the stack to 16-byte boundaries. Otherwise GCC
+# 2.95 adds code to the entry and exit point of every function to align the
+# stack to 16-byte boundaries -- thus wasting approximately 12 bytes of stack
+# per function call. While the 16-byte alignment may benefit micro
benchmarks,
+# it is probably an overall loss as it makes the code bigger (less efficient
+# use of code cache tag lines) and uses more stack (less efficient use of data
+# cache tag lines)
+#
+.if ${MACHINE_ARCH} == "i386" && ${CC} != "icc"
+CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2
+INLINE_LIMIT?= 8000
+.endif
+
+#
+# On the alpha, make sure that we don't use floating-point registers and
+# allow the use of BWX etc instructions (only needed for low-level i/o).
+# Also, reserve register t7 to point at per-cpu global variables.
+#
+.if ${MACHINE_ARCH} == "alpha"
+CFLAGS+= -mno-fp-regs -ffixed-8 -Wa,-mev6
+INLINE_LIMIT?= 15000
+.endif
+
+.if ${MACHINE_ARCH} == "arm"
+INLINE_LIMIT?= 8000
+.endif
+#
+# For IA-64, we use r13 for the kernel globals pointer and we only use
+# a very small subset of float registers for integer divides.
+#
+.if ${MACHINE_ARCH} == "ia64"
+CFLAGS+= -ffixed-r13 -mfixed-range=f32-f127 -mno-sdata
+INLINE_LIMIT?= 15000
+.endif
+
+#
+# For sparc64 we want medlow code model, and we tell gcc to use floating
+# point emulation. This avoids using floating point registers for integer
+# operations which it has a tendency to do.
+#
+.if ${MACHINE_ARCH} == "sparc64"
+CFLAGS+= -mcmodel=medlow -msoft-float
+INLINE_LIMIT?= 15000
+.endif
+
+#
+# For AMD64, use a medium model for now. We'll switch to "kernel"
+# once pmap is ready. Be excessively careful to not generate FPU code.
+#
+.if ${MACHINE_ARCH} == "amd64"
+CFLAGS+= -mcmodel=kernel -mno-red-zone \
+ -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow \
+ -msoft-float -fno-asynchronous-unwind-tables
+INLINE_LIMIT?= 8000
+.endif
+
+#
+# For PowerPC we tell gcc to use floating point emulation. This avoids using
+# floating point registers for integer operations which it has a tendency to
do.
+#
+.if ${MACHINE_ARCH} == "powerpc"
+CFLAGS+= -msoft-float
+INLINE_LIMIT?= 15000
+.endif
+
+#
+# GCC 3.0 and above like to do certain optimizations based on the
+# assumption that the program is linked against libc. Stop this.
+#
+.if ${CC} == "icc"
+CFLAGS+= -nolib_inline
+.else
+CFLAGS+= -ffreestanding
+.endif
+
+.if ${CC} == "icc"
+CFLAGS+= -restrict
+.endif
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