Merged branch haiku/branches/developer/bonefish/optimization revision

23139 into trunk, with roughly the following changes (for details svn
log the branch):
* The int 99 syscall handler is now fully in assembly.
* Added a sysenter/sysexit handler and use it on Pentiums that support
  it (via commpage).
* Got rid of i386_handle_trap(). A bit of functionality was moved into
  the assembly handler which now uses a jump table to call C functions
  handling the respective interrupt.
* Some optimizations to get user debugger support code out of the
  interrupt handling path.
* Introduced a thread::flags fields which allows to skip handling of
  rare events (signals, user debug enabling/disabling) on the
  common interrupt handling path.
* Got rid of the explicit iframe stack. The iframes can still be
  retrieved by iterating through the stack frames.
* Made the commpage an architecture independent feature. It's used for
  the real time data stuff (instead of creating a separate area).
* The x86 CPU modules can now provide processor optimized versions for
  common functions (currently memcpy() only). They are used in the
  kernel and are provided to the userland via commpage entries.
* Introduced build system feature allowing easy use of C structure
  member offsets in assembly code.

Changes after merging:
* Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp
  (caused by refactoring and introduction of "call" debugger command).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96

build/jam/MainBuildRules

@@ -212,6 +212,118 @@ actions Ld
 	$(LINK) $(LINKFLAGS) -o "$(1)" "$(2)" "$(NEEDLIBS)" $(LINKLIBS)
 }
 
+rule CreateAsmStructOffsetsHeader header : source
+{
+	# CreateAsmStructOffsetsHeader header : source
+	#
+	# Grist will be added to both header and source.
+
+	header = [ FGristFiles $(header) ] ;
+	source = [ FGristFiles $(source) ] ;
+
+	# find out which headers, defines, etc. to use
+	local headers ;
+	local sysHeaders ;
+	local defines ;
+	local flags ;
+	local includesSeparator ;
+	local localIncludesOption ;
+	local systemIncludesOption ;
+	
+	on $(header) { # use on $(1) variable values
+		if ! $(PLATFORM) in $(SUPPORTED_PLATFORMS) {
+			return ;
+		}
+
+		# headers and defines
+		headers = $(SEARCH_SOURCE) $(SUBDIRHDRS) $(HDRS) ;
+		sysHeaders = $(SUBDIRSYSHDRS) $(SYSHDRS) ;
+		defines = $(DEFINES) ;
+
+		if $(PLATFORM) = host {
+			sysHeaders += $(HOST_HDRS) ;
+			defines += $(HOST_DEFINES) ;
+	
+			if $(USES_BE_API) {
+				sysHeaders += $(HOST_BE_API_HEADERS) ;
+			}
+	
+		} else {
+			sysHeaders += $(TARGET_HDRS) ;
+			defines += $(TARGET_DEFINES) ;
+		}
+
+		# optimization flags
+		if $(DEBUG) = 0 {
+			flags += $(OPTIM) ;
+		} else {
+			flags += -O0 ;
+		}
+	
+		if $(PLATFORM) = host {
+			# warning flags
+			if $(WARNINGS) != 0 {
+				flags += $(HOST_WARNING_C++FLAGS) ;
+			}
+	
+			# debug and other flags
+			flags += $(HOST_C++FLAGS) $(HOST_DEBUG_$(DEBUG)_C++FLAGS)
+				$(SUBDIRC++FLAGS) $(C++FLAGS) ;
+		
+			if $(USES_BE_API) {
+				flags += $(HOST_BE_API_C++FLAGS) ;
+			}
+	
+			C++ on $(header) = $(HOST_C++) ;
+		
+			includesSeparator = $(HOST_INCLUDES_SEPARATOR) ;
+			localIncludesOption = $(HOST_LOCAL_INCLUDES_OPTION) ;
+			systemIncludesOption = $(HOST_SYSTEM_INCLUDES_OPTION) ;
+
+		} else {
+			# warning flags
+			if $(WARNINGS) != 0 {
+				flags += $(TARGET_WARNING_C++FLAGS) ;
+			}
+	
+			# debug and other flags
+			flags += $(TARGET_C++FLAGS) $(TARGET_DEBUG_$(DEBUG)_C++FLAGS)
+				$(SUBDIRC++FLAGS) $(C++FLAGS) ;
+	
+			C++ on $(header) = $(TARGET_C++) ;
+
+			includesSeparator = $(TARGET_INCLUDES_SEPARATOR) ;
+			localIncludesOption = $(TARGET_LOCAL_INCLUDES_OPTION) ;
+			systemIncludesOption = $(TARGET_SYSTEM_INCLUDES_OPTION) ;
+		}
+	}
+
+	# locate object, search for source, and set on target variables
+
+	Depends $(header) : $(source) ;
+	SEARCH on $(source) += $(SEARCH_SOURCE) ;
+	MakeLocateArch $(header) ;
+	LocalClean clean : $(header) ;
+
+	HDRRULE on $(source) = HdrRule ;
+	HDRSCAN on $(source) = $(HDRPATTERN) ;
+	HDRSEARCH on $(source) = $(headers) $(sysHeaders) $(STDHDRS) ;
+	HDRGRIST on $(source) = $(HDRGRIST) ;
+
+	C++FLAGS on $(header) = $(flags) ;
+	CCHDRS on $(header) = [ FIncludes $(headers) : $(localIncludesOption) ]
+		$(includesSeparator)
+		[ FSysIncludes $(sysHeaders) : $(systemIncludesOption) ] ;
+	CCDEFS on $(header) = [ FDefines $(defines) ] ;
+
+	CreateAsmStructOffsetsHeader1 $(header) : $(source) ;
+}
+
+actions CreateAsmStructOffsetsHeader1
+{
+ 	$(C++) -S "$(2)" $(C++FLAGS) $(CCDEFS) $(CCHDRS) -o - \
+		| grep "#define" | sed -e 's/\$//' > "$(1)"
+}
 
 rule MergeObjectFromObjects
 {