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 some ARMv6 functions, which must be 48 # in the same linkage unit, and for a couple of other functions that didn't 49 # make it into libSystem. 50 Configs += ios 51 UniversalArchs.ios := $(call CheckArches,i386 x86_64 armv6 armv7,ios) 52 53 # Configuration for targetting OSX. These functions may not be in libSystem 54 # so we should provide our own. 55 Configs += osx 56 UniversalArchs.osx := $(call CheckArches,i386 x86_64,osx) 57 58 # Configuration for use with kernel/kexts. 59 Configs += cc_kext 60 UniversalArchs.cc_kext := $(call CheckArches,armv6 armv7 i386 x86_64,cc_kext) 61 62 # Configurations which define the profiling support functions. 63 Configs += profile_osx 64 UniversalArchs.profile_osx := $(call CheckArches,i386 x86_64,profile_osx) 65 Configs += profile_ios 66 UniversalArchs.profile_ios := $(call CheckArches,i386 x86_64 armv6 armv7,profile_ios) 67 68 # Configurations which define the ASAN support functions. 69 Configs += asan_osx 70 UniversalArchs.asan_osx := $(call CheckArches,i386 x86_64,asan_osx) 71 72 # If RC_SUPPORTED_ARCHS is defined, treat it as a list of the architectures we 73 # are intended to support and limit what we try to build to that. 74 # 75 # We make sure to remove empty configs if we end up dropping all the requested 76 # archs for a particular config. 77 ifneq ($(RC_SUPPORTED_ARCHS),) 78 $(foreach config,$(Configs),\ 79 $(call Set,UniversalArchs.$(config),\ 80 $(filter $(RC_SUPPORTED_ARCHS),$(UniversalArchs.$(config))))\ 81 $(if $(UniversalArchs.$(config)),,\ 82 $(call Set,Configs,$(filter-out $(config),$(Configs))))) 83 endif 84 85 ### 86 87 # Forcibly strip off any -arch, as that totally breaks our universal support. 88 override CC := $(subst -arch ,-arch_,$(CC)) 89 override CC := $(patsubst -arch_%,,$(CC)) 90 91 CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer 92 93 # Always set deployment target arguments for every build, these libraries should 94 # never depend on the environmental overrides. We simply set them to minimum 95 # supported deployment target -- nothing in the compiler-rt libraries should 96 # actually depend on the deployment target. 97 OSX_DEPLOYMENT_ARGS := -mmacosx-version-min=10.4 98 IOS_DEPLOYMENT_ARGS := -miphoneos-version-min=1.0 99 IOSSIM_DEPLOYMENT_ARGS := -miphoneos-version-min=1.0 100 101 # Use our stub SDK as the sysroot to support more portable building. 102 OSX_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin 103 IOS_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin 104 IOSSIM_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin 105 106 CFLAGS.eprintf := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 107 CFLAGS.10.4 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 108 # FIXME: We can't build ASAN with our stub SDK yet. 109 CFLAGS.asan_osx := $(CFLAGS) -mmacosx-version-min=10.5 110 111 CFLAGS.ios.i386 := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS) 112 CFLAGS.ios.x86_64 := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS) 113 CFLAGS.ios.armv6 := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS) 114 CFLAGS.ios.armv7 := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS) 115 CFLAGS.osx.i386 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 116 CFLAGS.osx.x86_64 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 117 CFLAGS.cc_kext.i386 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 118 CFLAGS.cc_kext.x86_64 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 119 CFLAGS.cc_kext.armv6 := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS) -mthumb 120 CFLAGS.cc_kext.armv7 := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS) 121 CFLAGS.profile_osx.i386 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 122 CFLAGS.profile_osx.x86_64 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS) 123 CFLAGS.profile_ios.i386 := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS) 124 CFLAGS.profile_ios.x86_64 := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS) 125 CFLAGS.profile_ios.armv6 := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS) 126 CFLAGS.profile_ios.armv7 := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS) 127 128 FUNCTIONS.eprintf := eprintf 129 FUNCTIONS.10.4 := eprintf floatundidf floatundisf floatundixf 130 131 FUNCTIONS.ios := divmodsi4 udivmodsi4 mulosi4 mulodi4 muloti4 132 # On x86, the divmod functions reference divsi. 133 FUNCTIONS.ios.i386 := $(FUNCTIONS.ios) \ 134 divsi3 udivsi3 135 FUNCTIONS.ios.x86_64 := $(FUNCTIONS.ios) \ 136 divsi3 udivsi3 137 FUNCTIONS.ios.armv6 := $(FUNCTIONS.ios) \ 138 sync_synchronize \ 139 switch16 switch32 switch8 switchu8 \ 140 save_vfp_d8_d15_regs restore_vfp_d8_d15_regs 141 142 FUNCTIONS.osx := mulosi4 mulodi4 muloti4 143 144 FUNCTIONS.profile_osx := GCDAProfiling 145 FUNCTIONS.profile_ios := GCDAProfiling 146 147 FUNCTIONS.asan_osx := $(AsanFunctions) 148 149 CCKEXT_COMMON_FUNCTIONS := \ 150 absvdi2 \ 151 absvsi2 \ 152 addvdi3 \ 153 addvsi3 \ 154 ashldi3 \ 155 ashrdi3 \ 156 bswapdi2 \ 157 bswapsi2 \ 158 clzdi2 \ 159 clzsi2 \ 160 cmpdi2 \ 161 ctzdi2 \ 162 ctzsi2 \ 163 divdc3 \ 164 divdi3 \ 165 divsc3 \ 166 divmodsi4 \ 167 udivmodsi4 \ 168 do_global_dtors \ 169 eprintf \ 170 ffsdi2 \ 171 fixdfdi \ 172 fixsfdi \ 173 fixunsdfdi \ 174 fixunsdfsi \ 175 fixunssfdi \ 176 fixunssfsi \ 177 floatdidf \ 178 floatdisf \ 179 floatundidf \ 180 floatundisf \ 181 gcc_bcmp \ 182 lshrdi3 \ 183 moddi3 \ 184 muldc3 \ 185 muldi3 \ 186 mulsc3 \ 187 mulvdi3 \ 188 mulvsi3 \ 189 negdi2 \ 190 negvdi2 \ 191 negvsi2 \ 192 paritydi2 \ 193 paritysi2 \ 194 popcountdi2 \ 195 popcountsi2 \ 196 powidf2 \ 197 powisf2 \ 198 subvdi3 \ 199 subvsi3 \ 200 ucmpdi2 \ 201 udiv_w_sdiv \ 202 udivdi3 \ 203 udivmoddi4 \ 204 umoddi3 205 206 CCKEXT_ARM_FUNCTIONS := $(CCKEXT_COMMON_FUNCTIONS) \ 207 adddf3 \ 208 addsf3 \ 209 aeabi_cdcmpeq \ 210 aeabi_cdrcmple \ 211 aeabi_cfcmpeq \ 212 aeabi_cfrcmple \ 213 aeabi_dcmpeq \ 214 aeabi_dcmpge \ 215 aeabi_dcmpgt \ 216 aeabi_dcmple \ 217 aeabi_dcmplt \ 218 aeabi_drsub \ 219 aeabi_fcmpeq \ 220 aeabi_fcmpge \ 221 aeabi_fcmpgt \ 222 aeabi_fcmple \ 223 aeabi_fcmplt \ 224 aeabi_frsub \ 225 aeabi_idivmod \ 226 aeabi_uidivmod \ 227 cmpdf2 \ 228 cmpsf2 \ 229 div0 \ 230 divdf3 \ 231 divsf3 \ 232 divsi3 \ 233 extendsfdf2 \ 234 ffssi2 \ 235 fixdfsi \ 236 fixsfsi \ 237 floatsidf \ 238 floatsisf \ 239 floatunsidf \ 240 floatunsisf \ 241 comparedf2 \ 242 comparesf2 \ 243 modsi3 \ 244 muldf3 \ 245 mulsf3 \ 246 negdf2 \ 247 negsf2 \ 248 subdf3 \ 249 subsf3 \ 250 switch16 \ 251 switch32 \ 252 switch8 \ 253 switchu8 \ 254 truncdfsf2 \ 255 udivsi3 \ 256 umodsi3 \ 257 unorddf2 \ 258 unordsf2 259 260 CCKEXT_ARMVFP_FUNCTIONS := $(CCKEXT_ARM_FUNCTIONS) \ 261 adddf3vfp \ 262 addsf3vfp \ 263 divdf3vfp \ 264 divsf3vfp \ 265 eqdf2vfp \ 266 eqsf2vfp \ 267 extendsfdf2vfp \ 268 fixdfsivfp \ 269 fixsfsivfp \ 270 fixunsdfsivfp \ 271 fixunssfsivfp \ 272 floatsidfvfp \ 273 floatsisfvfp \ 274 floatunssidfvfp \ 275 floatunssisfvfp \ 276 gedf2vfp \ 277 gesf2vfp \ 278 gtdf2vfp \ 279 gtsf2vfp \ 280 ledf2vfp \ 281 lesf2vfp \ 282 ltdf2vfp \ 283 ltsf2vfp \ 284 muldf3vfp \ 285 mulsf3vfp \ 286 nedf2vfp \ 287 nesf2vfp \ 288 subdf3vfp \ 289 subsf3vfp \ 290 truncdfsf2vfp \ 291 unorddf2vfp \ 292 unordsf2vfp 293 294 FUNCTIONS.cc_kext.armv6 := $(CCKEXT_ARMVFP_FUNCTIONS) 295 FUNCTIONS.cc_kext.armv7 := $(CCKEXT_ARMVFP_FUNCTIONS) 296 297 CCKEXT_X86_FUNCTIONS := $(CCKEXT_COMMON_FUNCTIONS) \ 298 divxc3 \ 299 fixunsxfdi \ 300 fixunsxfsi \ 301 fixxfdi \ 302 floatdixf \ 303 floatundixf \ 304 mulxc3 \ 305 powixf2 306 307 FUNCTIONS.cc_kext.i386 := $(CCKEXT_X86_FUNCTIONS) \ 308 ffssi2 \ 309 i686.get_pc_thunk.eax \ 310 i686.get_pc_thunk.ebp \ 311 i686.get_pc_thunk.ebx \ 312 i686.get_pc_thunk.ecx \ 313 i686.get_pc_thunk.edi \ 314 i686.get_pc_thunk.edx \ 315 i686.get_pc_thunk.esi 316 317 FUNCTIONS.cc_kext.x86_64 := $(CCKEXT_X86_FUNCTIONS) \ 318 absvti2 \ 319 addvti3 \ 320 ashlti3 \ 321 ashrti3 \ 322 clzti2 \ 323 cmpti2 \ 324 ctzti2 \ 325 divti3 \ 326 ffsti2 \ 327 fixdfti \ 328 fixsfti \ 329 fixunsdfti \ 330 fixunssfti \ 331 fixunsxfti \ 332 fixxfti \ 333 floattidf \ 334 floattisf \ 335 floattixf \ 336 floatuntidf \ 337 floatuntisf \ 338 floatuntixf \ 339 lshrti3 \ 340 modti3 \ 341 multi3 \ 342 mulvti3 \ 343 negti2 \ 344 negvti2 \ 345 parityti2 \ 346 popcountti2 \ 347 subvti3 \ 348 ucmpti2 \ 349 udivmodti4 \ 350 udivti3 \ 351 umodti3 352 353 # FIXME: Currently, compiler-rt is missing implementations for a number of the 354 # functions that need to go into libcc_kext.a. Filter them out for now. 355 CCKEXT_MISSING_FUNCTIONS := \ 356 cmpdf2 cmpsf2 div0 \ 357 ffssi2 \ 358 udiv_w_sdiv unorddf2 unordsf2 bswapdi2 \ 359 bswapsi2 \ 360 gcc_bcmp \ 361 do_global_dtors \ 362 i686.get_pc_thunk.eax i686.get_pc_thunk.ebp i686.get_pc_thunk.ebx \ 363 i686.get_pc_thunk.ecx i686.get_pc_thunk.edi i686.get_pc_thunk.edx \ 364 i686.get_pc_thunk.esi \ 365 aeabi_cdcmpeq aeabi_cdrcmple aeabi_cfcmpeq aeabi_cfrcmple aeabi_dcmpeq \ 366 aeabi_dcmpge aeabi_dcmpgt aeabi_dcmple aeabi_dcmplt aeabi_drsub aeabi_fcmpeq \ 367 aeabi_fcmpge aeabi_fcmpgt aeabi_fcmple aeabi_fcmplt aeabi_frsub aeabi_idivmod \ 368 aeabi_uidivmod 369 370 FUNCTIONS.cc_kext.armv6 := \ 371 $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv6)) 372 FUNCTIONS.cc_kext.armv7 := \ 373 $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.armv7)) 374 FUNCTIONS.cc_kext.i386 := \ 375 $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.i386)) 376 FUNCTIONS.cc_kext.x86_64 := \ 377 $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.x86_64)) 378 379 KERNEL_USE.cc_kext := 1 380 381 VISIBILITY_HIDDEN := 1 382
