- Add a workaround for the amd64 SMP shared gdt issue that caused the

  host panics - longer explanation in this post:
	http://docs.freebsd.org/cgi/mid.cgi?20080501101951.GA30274 [1]
- Get rid of superfluous "kqemu " in IGNORE message when kernel source
  is missing
- Pass down DEBUG_FLAGS to the build
- Bump PORTREVISION

PR:		ports/113430 [1]

3 files changed, 96 insertions, 2 deletions

diff --git a/emulators/kqemu-kmod-devel/Makefile b/emulators/kqemu-kmod-devel/Makefile
index d4fa5f6c6999..872b199a6eff 100644
--- a/emulators/kqemu-kmod-devel/Makefile
+++ b/emulators/kqemu-kmod-devel/Makefile
@@ -7,7 +7,7 @@
 
 PORTNAME=	kqemu
 PORTVERSION=	1.3.0.p11
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	emulators kld
 MASTER_SITES=	http://fabrice.bellard.free.fr/qemu/ \
 		http://qemu.org/ \
@@ -48,7 +48,7 @@ KMODDIR=	/boot/modules
 MAKE_ENV+=	KMODDIR="${KMODDIR}"
 
 .if !exists(${SRC_BASE}/sys/Makefile)
-IGNORE=		kqemu requires kernel source to be installed
+IGNORE=		requires kernel source to be installed
 .endif
 
 .if ${OSVERSION} >= 700024 && ${OSVERSION} < 700053 && !defined(NOKSE)
@@ -58,6 +58,8 @@ IGNORE=		kqemu requires kernel source to be installed
 CFLAGS+=	-DKSE
 .endif
 
+CFLAGS+=       ${DEBUG_FLAGS}
+
 post-extract:
 .if ${OSVERSION} >= 700024 && ${OSVERSION} < 700053 && !defined(NOKSE)
 	@${ECHO_MSG} "Compiling with -DKSE."
diff --git a/emulators/kqemu-kmod-devel/files/patch-common-Makefile b/emulators/kqemu-kmod-devel/files/patch-common-Makefile
new file mode 100644
index 000000000000..a74cec5a4e1e
--- /dev/null
+++ b/emulators/kqemu-kmod-devel/files/patch-common-Makefile
@@ -0,0 +1,22 @@
+Index: common/Makefile
+@@ -47,9 +47,9 @@
+ ifeq ($(ARCH), x86_64)
+ COMMON_CFLAGS+=-mno-red-zone
+ endif
+-CFLAGS=$(COMMON_CFLAGS)
++CFLAGS=$(COMMON_CFLAGS) ${DEBUG_FLAGS}
+ MON_CFLAGS=$(COMMON_CFLAGS)
+-KERNEL_CFLAGS=$(COMMON_CFLAGS)
++KERNEL_CFLAGS=$(COMMON_CFLAGS) ${DEBUG_FLAGS}
+ 
+ # Disable SSP if GCC supports it
+ MON_CFLAGS+=$(call cc-option,$(MON_CC),-fno-stack-protector,)
+@@ -119,7 +119,7 @@
+ 	$(CC) $(CFLAGS) $(DEFINES) $(INCLUDES) -c -o $@ $<
+ 
+ %.o: %.S
+-	$(CC) $(DEFINES) $(INCLUDES) -D__ASSEMBLY__ -c -o $@ $<
++	$(CC) ${DEBUG_FLAGS} $(DEFINES) $(INCLUDES) -D__ASSEMBLY__ -c -o $@ $<
+ 
+ clean:
+ 	rm -f *.o *~ monitor-image.h genoffsets genmon monitor_def.h \
diff --git a/emulators/kqemu-kmod-devel/files/patch-tssworkaround b/emulators/kqemu-kmod-devel/files/patch-tssworkaround
new file mode 100644
index 000000000000..07185972a889
--- /dev/null
+++ b/emulators/kqemu-kmod-devel/files/patch-tssworkaround
@@ -0,0 +1,70 @@
+Index: kqemu-freebsd.c
+@@ -33,6 +33,11 @@
+ 
+ #include <machine/vmparam.h>
+ #include <machine/stdarg.h>
++#ifdef __x86_64__
++#include <sys/pcpu.h>
++#include <machine/segments.h>
++#include <machine/tss.h>
++#endif
+ 
+ #include "kqemu-kernel.h"
+ 
+@@ -234,6 +239,19 @@
+     va_end(ap);
+ }
+ 
++#ifdef __x86_64__
++/* called with interrupts disabled */
++void CDECL kqemu_tss_workaround(void)
++{
++    int gsel_tss = GSEL(GPROC0_SEL, SEL_KPL);
++
++    gdt_segs[GPROC0_SEL].ssd_base = (long) &common_tss[PCPU_GET(cpuid)];
++    ssdtosyssd(&gdt_segs[GPROC0_SEL],
++       (struct system_segment_descriptor *)&gdt[GPROC0_SEL]);
++    ltr(gsel_tss);
++}
++#endif
++
+ struct kqemu_instance { 
+ #if __FreeBSD_version >= 500000
+     TAILQ_ENTRY(kqemu_instance) kqemu_ent;
+Index: common/kernel.c
+@@ -1025,6 +1025,9 @@
+ #ifdef __x86_64__
+     uint16_t saved_ds, saved_es;
+     unsigned long fs_base, gs_base;
++#ifdef __FreeBSD__
++    struct kqemu_global_state *g = s->global_state;
++#endif
+ #endif
+     
+ #ifdef PROFILE
+@@ -1188,6 +1191,13 @@
+             apic_restore_nmi(s, apic_nmi_mask);
+         }
+         profile_record(s);
++#ifdef __FreeBSD__
++#ifdef __x86_64__
++        spin_lock(&g->lock);
++        kqemu_tss_workaround();
++        spin_unlock(&g->lock);
++#endif
++#endif
+ 
+         if (s->mon_req == MON_REQ_IRQ) {
+             struct kqemu_exception_regs *r;
+Index: kqemu-kernel.h
+@@ -44,4 +44,10 @@
+ 
+ void CDECL kqemu_log(const char *fmt, ...);
+ 
++#ifdef __FreeBSD__
++#ifdef __x86_64__
++void CDECL kqemu_tss_workaround(void);
++#endif
++#endif
++
+ #endif /* KQEMU_KERNEL_H */