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