X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fghc.mk;h=8b6ecb1ce85503438f76f813c0a8acdc4ceaf4bd;hb=efee3ecf26da95178b773ed68f33601e3fea2c23;hp=b238728e11f4e21adcf30e798ad44665042f8549;hpb=1be45d7baf6fafacd60e345c423c1025d8813111;p=ghc-hetmet.git

diff --git a/rts/ghc.mk b/rts/ghc.mk
index b238728..8b6ecb1 100644
--- a/rts/ghc.mk
+++ b/rts/ghc.mk
@@ -44,7 +44,7 @@ rts_C_SRCS = $(filter-out $(EXCLUDED_SRCS),$(wildcard rts/*.c $(foreach dir,$(AL
 rts_CMM_SRCS = $(wildcard rts/*.cmm)
 
 # Don't compile .S files when bootstrapping a new arch
-ifeq "$(TARGETPLATFORM)" "$(HOSTPLATFORM)"
+ifneq "$(PORTING_HOST)" "YES"
 ifneq "$(findstring $(TargetArch_CPP), powerpc powerpc64)" ""
 rts_S_SRCS += rts/AdjustorAsm.S
 else
@@ -165,17 +165,17 @@ ifneq "$$(findstring dyn, $1)" ""
 ifeq "$$(HOSTPLATFORM)" "i386-unknown-mingw32"
 $$(rts_$1_LIB) : $$(rts_$1_OBJS) $$(ALL_RTS_DEF_LIBS) rts/libs.depend
 	"$$(RM)" $$(RM_OPTS) $$@
-	"$$(rts_dist_HC)" -shared -dynamic -dynload deploy \
+	"$$(rts_dist_HC)" -package-name rts -shared -dynamic -dynload deploy \
 	  -no-auto-link-packages `cat rts/libs.depend` $$(rts_$1_OBJS) $$(ALL_RTS_DEF_LIBS) -o $$@
-ifeq "$$(darwin_TARGET_OS)" "1"
-	# Ensure library's install name is correct before anyone links with it.
-	install_name_tool -id $(ghclibdir)/$$(rts_$1_LIB_NAME) $$@
-endif
 else
 $$(rts_$1_LIB) : $$(rts_$1_OBJS) rts/libs.depend
 	"$$(RM)" $$(RM_OPTS) $$@
-	"$$(rts_dist_HC)" -shared -dynamic -dynload deploy \
+	"$$(rts_dist_HC)" -package-name rts -shared -dynamic -dynload deploy \
 	  -no-auto-link-packages `cat rts/libs.depend` $$(rts_$1_OBJS) -o $$@
+ifeq "$$(darwin_HOST_OS)" "1"
+	# Ensure library's install name is correct before anyone links with it.
+	install_name_tool -id $(ghclibdir)/$$(rts_$1_LIB_NAME) $$@
+endif
 endif
 else
 $$(rts_$1_LIB) : $$(rts_$1_OBJS)
@@ -307,6 +307,45 @@ rts/RtsUtils_CC_OPTS += -DTargetVendor=$(DQ)$(TargetVendor_CPP)$(DQ)
 rts/RtsUtils_CC_OPTS += -DGhcUnregisterised=$(DQ)$(GhcUnregisterised)$(DQ)
 rts/RtsUtils_CC_OPTS += -DGhcEnableTablesNextToCode=$(DQ)$(GhcEnableTablesNextToCode)$(DQ)
 
+# Compile various performance-critical pieces *without* -fPIC -dynamic
+# even when building a shared library.  If we don't do this, then the
+# GC runs about 50% slower on x86 due to the overheads of PIC.  The
+# cost of doing this is a little runtime linking and less sharing, but
+# not much.
+#
+# On x86_64 this doesn't work, because all objects in a shared library
+# must be compiled with -fPIC (since the 32-bit relocations generated
+# by the default small memory can't be resolved at runtime).  So we
+# only do this on i386.
+#
+# This apparently doesn't work on OS X (Darwin) where we get errors of
+# the form
+#
+#  ld: absolute addressing (perhaps -mdynamic-no-pic) used in _stg_ap_0_fast from rts/dist/build/Apply.dyn_o not allowed in slidable image
+#
+# and lots of these warnings:
+#
+#  ld: warning codegen in _stg_ap_pppv_fast (offset 0x0000005E) prevents image from loading in dyld shared cache
+#
+ifeq "$(TargetArch_CPP)" "i386"
+ifneq "$(TargetOS_CPP)" "darwin"
+rts/sm/Evac_HC_OPTS           += -fno-PIC
+rts/sm/Evac_thr_HC_OPTS       += -fno-PIC
+rts/sm/Scav_HC_OPTS           += -fno-PIC
+rts/sm/Scav_thr_HC_OPTS       += -fno-PIC
+rts/sm/Compact_HC_OPTS        += -fno-PIC
+rts/sm/GC_HC_OPTS             += -fno-PIC
+
+# -static is also necessary for these bits, otherwise the NCG
+# -generates dynamic references:
+rts/Updates_HC_OPTS += -fno-PIC -static
+rts/StgMiscClosures_HC_OPTS += -fno-PIC -static
+rts/PrimOps_HC_OPTS += -fno-PIC -static
+rts/Apply_HC_OPTS += -fno-PIC -static
+rts/dist/build/AutoApply_HC_OPTS += -fno-PIC -static
+endif
+endif
+
 # ffi.h triggers prototype warnings, so disable them here:
 rts/Interpreter_CC_OPTS += -Wno-strict-prototypes
 rts/Adjustor_CC_OPTS    += -Wno-strict-prototypes
@@ -391,7 +430,7 @@ rts_dist_MKDEPENDC_OPTS += -Irts/dist/build
 
 endif
 
-$(eval $(call build-dependencies,rts,dist))
+$(eval $(call build-dependencies,rts,dist,1))
 
 $(rts_dist_depfile_c_asm) : libffi/dist-install/build/ffi.h $(DTRACEPROBES_H)