clang_darwin.mk revision 1d38069f4842973df02525c7bf77a5cbed3b03aa 
1# These are the functions which clang needs when it is targetting a previous
2# version of the OS. The issue is that the backend may use functions which were
3# not present in the libgcc that shipped on the platform. In such cases, we link
4# with a version of the library which contains private_extern definitions of all
5# the extra functions which might be referenced.
6
7Description := Static runtime libraries for clang/Darwin.
8
9# A function that ensures we don't try to build for architectures that we
10# don't have working toolchains for.
11CheckArches = \
12  $(shell \
13    result=""; \
14    for arch in $(1); do \
15      if $(CC) -arch $$arch -c \
16	  -integrated-as \
17	  $(ProjSrcRoot)/make/platform/clang_darwin_test_input.c \
18	  -isysroot $(ProjSrcRoot)/SDKs/darwin \
19	  -o /dev/null > /dev/null 2> /dev/null; then \
20        result="$$result$$arch "; \
21      else \
22	printf 1>&2 \
23	  "warning: clang_darwin.mk: dropping arch '$$arch' from lib '$(2)'\n"; \
24      fi; \
25    done; \
26    echo $$result)
27
28###
29
30CC := clang
31
32Configs :=
33UniversalArchs :=
34
35# Configuration solely for providing access to an eprintf symbol, which may
36# still be referenced from Darwin system headers. This symbol is only ever
37# needed on i386.
38Configs += eprintf
39UniversalArchs.eprintf := $(call CheckArches,i386,eprintf)
40
41# Configuration for targetting 10.4. We need a few functions missing from
42# libgcc_s.10.4.dylib. We only build x86 slices since clang doesn't really
43# support targetting PowerPC.
44Configs += 10.4
45UniversalArchs.10.4 := $(call CheckArches,i386 x86_64,10.4)
46
47# Configuration for targetting iOS for a couple of functions that didn't
48# make it into libSystem.
49Configs += ios
50UniversalArchs.ios := $(call CheckArches,i386 x86_64 armv7,ios)
51
52# Configuration for targetting OSX. These functions may not be in libSystem
53# so we should provide our own.
54Configs += osx
55UniversalArchs.osx := $(call CheckArches,i386 x86_64,osx)
56
57# Configuration for use with kernel/kexts.
58Configs += cc_kext
59UniversalArchs.cc_kext := $(call CheckArches,armv7 i386 x86_64,cc_kext)
60
61# Configuration for use with kernel/kexts for iOS 5.0 and earlier (which used 
62# a different code generation strategy).
63Configs += cc_kext_ios5
64UniversalArchs.cc_kext_ios5 := $(call CheckArches,x86_64 armv7,cc_kext_ios5)
65
66# Configurations which define the profiling support functions.
67Configs += profile_osx
68UniversalArchs.profile_osx := $(call CheckArches,i386 x86_64,profile_osx)
69Configs += profile_ios
70UniversalArchs.profile_ios := $(call CheckArches,i386 x86_64 armv7,profile_ios)
71
72# Configurations which define the ASAN support functions.
73Configs += asan_osx
74UniversalArchs.asan_osx := $(call CheckArches,i386 x86_64,asan_osx)
75
76Configs += asan_osx_dynamic
77UniversalArchs.asan_osx_dynamic := $(call CheckArches,i386 x86_64,asan_osx_dynamic)
78
79Configs += ubsan_osx
80UniversalArchs.ubsan_osx := $(call CheckArches,i386 x86_64,ubsan_osx)
81
82# Darwin 10.6 has a bug in cctools that makes it unable to use ranlib on our ARM
83# object files. If we are on that platform, strip out all ARM archs. We still
84# build the libraries themselves so that Clang can find them where it expects
85# them, even though they might not have an expected slice.
86ifneq ($(shell which sw_vers),)
87ifneq ($(shell sw_vers -productVersion | grep 10.6),)
88UniversalArchs.ios := $(filter-out armv7, $(UniversalArchs.ios))
89UniversalArchs.cc_kext := $(filter-out armv7, $(UniversalArchs.cc_kext))
90UniversalArchs.cc_kext_ios5 := $(filter-out armv7, $(UniversalArchs.cc_kext_ios5))
91UniversalArchs.profile_ios := $(filter-out armv7, $(UniversalArchs.profile_ios))
92endif
93endif
94
95# If RC_SUPPORTED_ARCHS is defined, treat it as a list of the architectures we
96# are intended to support and limit what we try to build to that.
97#
98# We make sure to remove empty configs if we end up dropping all the requested
99# archs for a particular config.
100ifneq ($(RC_SUPPORTED_ARCHS),)
101$(foreach config,$(Configs),\
102  $(call Set,UniversalArchs.$(config),\
103	$(filter $(RC_SUPPORTED_ARCHS),$(UniversalArchs.$(config))))\
104  $(if $(UniversalArchs.$(config)),,\
105	$(call Set,Configs,$(filter-out $(config),$(Configs)))))
106endif
107
108###
109
110# Forcibly strip off any -arch, as that totally breaks our universal support.
111override CC := $(subst -arch ,-arch_,$(CC))
112override CC := $(patsubst -arch_%,,$(CC))
113
114CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer
115
116# Always set deployment target arguments for every build, these libraries should
117# never depend on the environmental overrides. We simply set them to minimum
118# supported deployment target -- nothing in the compiler-rt libraries should
119# actually depend on the deployment target.
120OSX_DEPLOYMENT_ARGS := -mmacosx-version-min=10.4
121IOS_DEPLOYMENT_ARGS := -mios-version-min=1.0
122IOS6_DEPLOYMENT_ARGS := -mios-version-min=6.0
123IOSSIM_DEPLOYMENT_ARGS := -mios-simulator-version-min=1.0
124
125# Use our stub SDK as the sysroot to support more portable building.
126OSX_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
127IOS_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
128IOS6_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
129IOSSIM_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
130
131CFLAGS.eprintf		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
132CFLAGS.10.4		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
133# FIXME: We can't build ASAN with our stub SDK yet.
134CFLAGS.asan_osx         := $(CFLAGS) -mmacosx-version-min=10.5 -fno-builtin \
135                           -fno-rtti -DASAN_FLEXIBLE_MAPPING_AND_OFFSET=1
136CFLAGS.asan_osx_dynamic := \
137	$(CFLAGS) -mmacosx-version-min=10.5 -fno-builtin \
138	-DMAC_INTERPOSE_FUNCTIONS=1 \
139  -DASAN_FLEXIBLE_MAPPING_AND_OFFSET=1
140
141CFLAGS.ubsan_osx	:= $(CFLAGS) -mmacosx-version-min=10.5 -fno-builtin
142
143CFLAGS.ios.i386		:= $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
144CFLAGS.ios.x86_64	:= $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
145CFLAGS.ios.armv7	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
146CFLAGS.ios.armv7f	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
147CFLAGS.ios.armv7k	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
148CFLAGS.ios.armv7s	:= $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
149CFLAGS.osx.i386		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
150CFLAGS.osx.x86_64	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
151CFLAGS.cc_kext.i386	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
152CFLAGS.cc_kext.x86_64	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
153CFLAGS.cc_kext.armv7	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
154CFLAGS.cc_kext.armv7f	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
155CFLAGS.cc_kext.armv7k	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
156CFLAGS.cc_kext.armv7s	:= $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
157CFLAGS.cc_kext_ios5.armv7  := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
158CFLAGS.cc_kext_ios5.armv7f := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
159CFLAGS.cc_kext_ios5.armv7k := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
160CFLAGS.cc_kext_ios5.armv7s := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
161CFLAGS.profile_osx.i386   := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
162CFLAGS.profile_osx.x86_64 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
163CFLAGS.profile_ios.i386   := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
164CFLAGS.profile_ios.x86_64 := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
165CFLAGS.profile_ios.armv7  := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
166CFLAGS.profile_ios.armv7f := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
167CFLAGS.profile_ios.armv7k := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
168CFLAGS.profile_ios.armv7s := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
169
170# Configure the asan_osx_dynamic library to be built shared.
171SHARED_LIBRARY.asan_osx_dynamic := 1
172LDFLAGS.asan_osx_dynamic := -framework Foundation -lstdc++ -undefined dynamic_lookup
173
174FUNCTIONS.eprintf := eprintf
175FUNCTIONS.10.4 := eprintf floatundidf floatundisf floatundixf
176
177FUNCTIONS.ios	    := divmodsi4 udivmodsi4 mulosi4 mulodi4 muloti4
178# On x86, the divmod functions reference divsi.
179FUNCTIONS.ios.i386   := $(FUNCTIONS.ios) \
180                        divsi3 udivsi3
181FUNCTIONS.ios.x86_64 := $(FUNCTIONS.ios) \
182                        divsi3 udivsi3
183
184FUNCTIONS.osx	:= mulosi4 mulodi4 muloti4
185
186FUNCTIONS.profile_osx := GCDAProfiling
187FUNCTIONS.profile_ios := GCDAProfiling
188
189FUNCTIONS.asan_osx := $(AsanFunctions) $(InterceptionFunctions) \
190                                       $(SanitizerCommonFunctions)
191FUNCTIONS.asan_osx_dynamic := $(AsanFunctions) $(InterceptionFunctions) \
192                              $(SanitizerCommonFunctions) \
193	                      $(AsanDynamicFunctions)
194
195FUNCTIONS.ubsan_osx := $(UbsanFunctions) $(UbsanCXXFunctions) \
196                       $(SanitizerCommonFunctions)
197
198CCKEXT_COMMON_FUNCTIONS := \
199	absvdi2 \
200	absvsi2 \
201	addvdi3 \
202	addvsi3 \
203	ashldi3 \
204	ashrdi3 \
205	bswapdi2 \
206	bswapsi2 \
207	clzdi2 \
208	clzsi2 \
209	cmpdi2 \
210	ctzdi2 \
211	ctzsi2 \
212	divdc3 \
213	divdi3 \
214	divsc3 \
215	divmodsi4 \
216	udivmodsi4 \
217	do_global_dtors \
218	eprintf \
219	ffsdi2 \
220	fixdfdi \
221	fixsfdi \
222	fixunsdfdi \
223	fixunsdfsi \
224	fixunssfdi \
225	fixunssfsi \
226	floatdidf \
227	floatdisf \
228	floatundidf \
229	floatundisf \
230	gcc_bcmp \
231	lshrdi3 \
232	moddi3 \
233	muldc3 \
234	muldi3 \
235	mulsc3 \
236	mulvdi3 \
237	mulvsi3 \
238	negdi2 \
239	negvdi2 \
240	negvsi2 \
241	paritydi2 \
242	paritysi2 \
243	popcountdi2 \
244	popcountsi2 \
245	powidf2 \
246	powisf2 \
247	subvdi3 \
248	subvsi3 \
249	ucmpdi2 \
250	udiv_w_sdiv \
251	udivdi3 \
252	udivmoddi4 \
253	umoddi3
254
255CCKEXT_ARM_FUNCTIONS := $(CCKEXT_COMMON_FUNCTIONS) \
256	adddf3 \
257	addsf3 \
258	aeabi_cdcmpeq \
259	aeabi_cdrcmple \
260	aeabi_cfcmpeq \
261	aeabi_cfrcmple \
262	aeabi_dcmpeq \
263	aeabi_dcmpge \
264	aeabi_dcmpgt \
265	aeabi_dcmple \
266	aeabi_dcmplt \
267	aeabi_drsub \
268	aeabi_fcmpeq \
269	aeabi_fcmpge \
270	aeabi_fcmpgt \
271	aeabi_fcmple \
272	aeabi_fcmplt \
273	aeabi_frsub \
274	aeabi_idivmod \
275	aeabi_uidivmod \
276	cmpdf2 \
277	cmpsf2 \
278	div0 \
279	divdf3 \
280	divsf3 \
281	divsi3 \
282	extendsfdf2 \
283	ffssi2 \
284	fixdfsi \
285	fixsfsi \
286	floatsidf \
287	floatsisf \
288	floatunsidf \
289	floatunsisf \
290	comparedf2 \
291	comparesf2 \
292	modsi3 \
293	muldf3 \
294	mulsf3 \
295	negdf2 \
296	negsf2 \
297	subdf3 \
298	subsf3 \
299	switch16 \
300	switch32 \
301	switch8 \
302	switchu8 \
303	truncdfsf2 \
304	udivsi3 \
305	umodsi3 \
306	unorddf2 \
307	unordsf2
308
309CCKEXT_ARMVFP_FUNCTIONS := $(CCKEXT_ARM_FUNCTIONS) \
310	adddf3vfp \
311	addsf3vfp \
312	divdf3vfp \
313	divsf3vfp \
314	eqdf2vfp \
315	eqsf2vfp \
316	extendsfdf2vfp \
317	fixdfsivfp \
318	fixsfsivfp \
319	fixunsdfsivfp \
320	fixunssfsivfp \
321	floatsidfvfp \
322	floatsisfvfp \
323	floatunssidfvfp \
324	floatunssisfvfp \
325	gedf2vfp \
326	gesf2vfp \
327	gtdf2vfp \
328	gtsf2vfp \
329	ledf2vfp \
330	lesf2vfp \
331	ltdf2vfp \
332	ltsf2vfp \
333	muldf3vfp \
334	mulsf3vfp \
335	nedf2vfp \
336	nesf2vfp \
337	subdf3vfp \
338	subsf3vfp \
339	truncdfsf2vfp \
340	unorddf2vfp \
341	unordsf2vfp
342
343FUNCTIONS.cc_kext.armv7 := $(CCKEXT_ARMVFP_FUNCTIONS)
344FUNCTIONS.cc_kext.armv7f := $(CCKEXT_ARMVFP_FUNCTIONS)
345FUNCTIONS.cc_kext.armv7k := $(CCKEXT_ARMVFP_FUNCTIONS)
346FUNCTIONS.cc_kext.armv7s := $(CCKEXT_ARMVFP_FUNCTIONS)
347FUNCTIONS.cc_kext_ios5.armv7 := $(CCKEXT_ARMVFP_FUNCTIONS)
348FUNCTIONS.cc_kext_ios5.armv7f := $(CCKEXT_ARMVFP_FUNCTIONS)
349FUNCTIONS.cc_kext_ios5.armv7k := $(CCKEXT_ARMVFP_FUNCTIONS)
350FUNCTIONS.cc_kext_ios5.armv7s := $(CCKEXT_ARMVFP_FUNCTIONS)
351
352CCKEXT_X86_FUNCTIONS := $(CCKEXT_COMMON_FUNCTIONS) \
353	divxc3 \
354	fixunsxfdi \
355	fixunsxfsi \
356	fixxfdi \
357	floatdixf \
358	floatundixf \
359	mulxc3 \
360	powixf2
361
362FUNCTIONS.cc_kext.i386 := $(CCKEXT_X86_FUNCTIONS) \
363	ffssi2 \
364	i686.get_pc_thunk.eax \
365	i686.get_pc_thunk.ebp \
366	i686.get_pc_thunk.ebx \
367	i686.get_pc_thunk.ecx \
368	i686.get_pc_thunk.edi \
369	i686.get_pc_thunk.edx \
370	i686.get_pc_thunk.esi
371
372FUNCTIONS.cc_kext.x86_64 := $(CCKEXT_X86_FUNCTIONS) \
373	absvti2 \
374	addvti3 \
375	ashlti3 \
376	ashrti3 \
377	clzti2 \
378	cmpti2 \
379	ctzti2 \
380	divti3 \
381	ffsti2 \
382	fixdfti \
383	fixsfti \
384	fixunsdfti \
385	fixunssfti \
386	fixunsxfti \
387	fixxfti \
388	floattidf \
389	floattisf \
390	floattixf \
391	floatuntidf \
392	floatuntisf \
393	floatuntixf \
394	lshrti3 \
395	modti3 \
396	multi3 \
397	mulvti3 \
398	negti2 \
399	negvti2 \
400	parityti2 \
401	popcountti2 \
402	subvti3 \
403	ucmpti2 \
404	udivmodti4 \
405	udivti3 \
406	umodti3
407
408# FIXME: Currently, compiler-rt is missing implementations for a number of the
409# functions that need to go into libcc_kext.a. Filter them out for now.
410CCKEXT_MISSING_FUNCTIONS := \
411	cmpdf2 cmpsf2 div0 \
412	ffssi2 \
413	udiv_w_sdiv unorddf2 unordsf2 bswapdi2 \
414	bswapsi2 \
415	gcc_bcmp \
416	do_global_dtors \
417	i686.get_pc_thunk.eax i686.get_pc_thunk.ebp i686.get_pc_thunk.ebx \
418	i686.get_pc_thunk.ecx i686.get_pc_thunk.edi i686.get_pc_thunk.edx \
419	i686.get_pc_thunk.esi \
420	aeabi_cdcmpeq aeabi_cdrcmple aeabi_cfcmpeq aeabi_cfrcmple aeabi_dcmpeq \
421	aeabi_dcmpge aeabi_dcmpgt aeabi_dcmple aeabi_dcmplt aeabi_drsub aeabi_fcmpeq \
422	aeabi_fcmpge aeabi_fcmpgt aeabi_fcmple aeabi_fcmplt aeabi_frsub aeabi_idivmod \
423	aeabi_uidivmod
424
425FUNCTIONS.cc_kext.armv7 := \
426	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7))
427FUNCTIONS.cc_kext.armv7f := \
428	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7f))
429FUNCTIONS.cc_kext.armv7k := \
430	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7k))
431FUNCTIONS.cc_kext.armv7s := \
432	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7s))
433FUNCTIONS.cc_kext_ios5.armv7 := \
434	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios5.armv7))
435FUNCTIONS.cc_kext_ios5.armv7f := \
436	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios5.armv7f))
437FUNCTIONS.cc_kext_ios5.armv7k := \
438	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios5.armv7k))
439FUNCTIONS.cc_kext_ios5.armv7s := \
440	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios5.armv7s))
441FUNCTIONS.cc_kext.i386 := \
442	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.i386))
443FUNCTIONS.cc_kext.x86_64 := \
444	$(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.x86_64))
445
446KERNEL_USE.cc_kext := 1
447KERNEL_USE.cc_kext_ios5 := 1
448
449VISIBILITY_HIDDEN := 1
450
451SHARED_LIBRARY_SUFFIX := dylib
452