1 # These are the functions which clang needs when it is targeting 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 embedded 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 $$arch -c \ 16 -integrated-as \ 17 $(ProjSrcRoot)/make/platform/clang_macho_embedded_test_input.c \ 18 -o /dev/null > /dev/null 2> /dev/null; then \ 19 result="$$result$$arch "; \ 20 else \ 21 printf 1>&2 \ 22 "warning: clang_macho_embedded.mk: dropping arch '$$arch' from lib '$(2)'\n"; \ 23 fi; \ 24 done; \ 25 echo $$result) 26 27 XCRun = \ 28 $(shell \ 29 result=`xcrun -find $(1) 2> /dev/null`; \ 30 if [ "$$?" != "0" ]; then result=$(1); fi; \ 31 echo $$result) 32 33 ### 34 35 CC := $(call XCRun,clang) 36 AR := $(call XCRun,ar) 37 RANLIB := $(call XCRun,ranlib) 38 STRIP := $(call XCRun,strip) 39 LIPO := $(call XCRun,lipo) 40 DSYMUTIL := $(call XCRun,dsymutil) 41 42 Configs := 43 UniversalArchs := 44 45 # Soft-float version of the runtime. No floating-point instructions will be used 46 # and the ABI (out of necessity) passes floating values in normal registers: 47 # non-VFP variant of the AAPCS. 48 UniversalArchs.soft_static := $(call CheckArches,armv6m armv7m armv7em armv7,soft_static) 49 Configs += $(if $(UniversalArchs.soft_static),soft_static) 50 51 # Hard-float version of the runtime. On ARM VFP instructions and registers are 52 # allowed, and floating point values get passed in them. VFP variant of the 53 # AAPCS. 54 UniversalArchs.hard_static := $(call CheckArches,armv7em armv7 i386 x86_64,hard_static) 55 Configs += $(if $(UniversalArchs.hard_static),hard_static) 56 57 UniversalArchs.soft_pic := $(call CheckArches,armv6m armv7m armv7em armv7,soft_pic) 58 Configs += $(if $(UniversalArchs.soft_pic),soft_pic) 59 60 UniversalArchs.hard_pic := $(call CheckArches,armv7em armv7 i386 x86_64,hard_pic) 61 Configs += $(if $(UniversalArchs.hard_pic),hard_pic) 62 63 CFLAGS := -Wall -Werror -Oz -fomit-frame-pointer -ffreestanding 64 65 PIC_CFLAGS := -fPIC 66 STATIC_CFLAGS := -static 67 68 CFLAGS_SOFT := -mfloat-abi=soft 69 CFLAGS_HARD := -mfloat-abi=hard 70 71 CFLAGS_ARMV7 := -target thumbv7-apple-darwin-eabi 72 CFLAGS_I386 := -march=pentium 73 74 CFLAGS.soft_static := $(CFLAGS) $(STATIC_CFLAGS) $(CFLAGS_SOFT) 75 CFLAGS.hard_static := $(CFLAGS) $(STATIC_CFLAGS) $(CFLAGS_HARD) 76 CFLAGS.soft_pic := $(CFLAGS) $(PIC_CFLAGS) $(CFLAGS_SOFT) 77 CFLAGS.hard_pic := $(CFLAGS) $(PIC_CFLAGS) $(CFLAGS_HARD) 78 79 CFLAGS.soft_static.armv7 := $(CFLAGS.soft_static) $(CFLAGS_ARMV7) 80 CFLAGS.hard_static.armv7 := $(CFLAGS.hard_static) $(CFLAGS_ARMV7) 81 CFLAGS.soft_pic.armv7 := $(CFLAGS.soft_pic) $(CFLAGS_ARMV7) 82 CFLAGS.hard_pic.armv7 := $(CFLAGS.hard_pic) $(CFLAGS_ARMV7) 83 84 # x86 platforms ignore -mfloat-abi options and complain about doing so. Despite 85 # this they're hard-float. 86 CFLAGS.hard_static.i386 := $(CFLAGS) $(STATIC_CFLAGS) $(CFLAGS_I386) 87 CFLAGS.hard_pic.i386 := $(CFLAGS) $(PIC_CFLAGS) $(CFLAGS_I386) 88 CFLAGS.hard_static.x86_64 := $(CFLAGS) $(STATIC_CFLAGS) 89 CFLAGS.hard_pic.x86_64 := $(CFLAGS) $(PIC_CFLAGS) 90 91 # Functions not wanted: 92 # + eprintf is obsolete anyway 93 # + *vfp: designed for Thumb1 CPUs with VFPv2 94 95 COMMON_FUNCTIONS := \ 96 absvdi2 \ 97 absvsi2 \ 98 addvdi3 \ 99 addvsi3 \ 100 ashldi3 \ 101 ashrdi3 \ 102 bswapdi2 \ 103 bswapsi2 \ 104 clzdi2 \ 105 clzsi2 \ 106 cmpdi2 \ 107 ctzdi2 \ 108 ctzsi2 \ 109 divdc3 \ 110 divdi3 \ 111 divsc3 \ 112 divmodsi4 \ 113 udivmodsi4 \ 114 do_global_dtors \ 115 ffsdi2 \ 116 fixdfdi \ 117 fixsfdi \ 118 fixunsdfdi \ 119 fixunsdfsi \ 120 fixunssfdi \ 121 fixunssfsi \ 122 floatdidf \ 123 floatdisf \ 124 floatundidf \ 125 floatundisf \ 126 gcc_bcmp \ 127 lshrdi3 \ 128 moddi3 \ 129 muldc3 \ 130 muldi3 \ 131 mulsc3 \ 132 mulvdi3 \ 133 mulvsi3 \ 134 negdi2 \ 135 negvdi2 \ 136 negvsi2 \ 137 paritydi2 \ 138 paritysi2 \ 139 popcountdi2 \ 140 popcountsi2 \ 141 powidf2 \ 142 powisf2 \ 143 subvdi3 \ 144 subvsi3 \ 145 ucmpdi2 \ 146 udiv_w_sdiv \ 147 udivdi3 \ 148 udivmoddi4 \ 149 umoddi3 \ 150 adddf3 \ 151 addsf3 \ 152 cmpdf2 \ 153 cmpsf2 \ 154 div0 \ 155 divdf3 \ 156 divsf3 \ 157 divsi3 \ 158 extendsfdf2 \ 159 ffssi2 \ 160 fixdfsi \ 161 fixsfsi \ 162 floatsidf \ 163 floatsisf \ 164 floatunsidf \ 165 floatunsisf \ 166 comparedf2 \ 167 comparesf2 \ 168 modsi3 \ 169 muldf3 \ 170 mulsf3 \ 171 negdf2 \ 172 negsf2 \ 173 subdf3 \ 174 subsf3 \ 175 truncdfsf2 \ 176 udivsi3 \ 177 umodsi3 \ 178 unorddf2 \ 179 unordsf2 180 181 ARM_FUNCTIONS := \ 182 aeabi_cdcmpeq \ 183 aeabi_cdrcmple \ 184 aeabi_cfcmpeq \ 185 aeabi_cfrcmple \ 186 aeabi_dcmpeq \ 187 aeabi_dcmpge \ 188 aeabi_dcmpgt \ 189 aeabi_dcmple \ 190 aeabi_dcmplt \ 191 aeabi_drsub \ 192 aeabi_fcmpeq \ 193 aeabi_fcmpge \ 194 aeabi_fcmpgt \ 195 aeabi_fcmple \ 196 aeabi_fcmplt \ 197 aeabi_frsub \ 198 aeabi_idivmod \ 199 aeabi_uidivmod \ 200 201 # ARM Assembly implementation which requires Thumb2 (i.e. won't work on v6M). 202 THUMB2_FUNCTIONS := \ 203 switch16 \ 204 switch32 \ 205 switch8 \ 206 switchu8 \ 207 sync_fetch_and_add_4 \ 208 sync_fetch_and_sub_4 \ 209 sync_fetch_and_and_4 \ 210 sync_fetch_and_or_4 \ 211 sync_fetch_and_xor_4 \ 212 sync_fetch_and_nand_4 \ 213 sync_fetch_and_max_4 \ 214 sync_fetch_and_umax_4 \ 215 sync_fetch_and_min_4 \ 216 sync_fetch_and_umin_4 \ 217 sync_fetch_and_add_8 \ 218 sync_fetch_and_sub_8 \ 219 sync_fetch_and_and_8 \ 220 sync_fetch_and_or_8 \ 221 sync_fetch_and_xor_8 \ 222 sync_fetch_and_nand_8 \ 223 sync_fetch_and_max_8 \ 224 sync_fetch_and_umax_8 \ 225 sync_fetch_and_min_8 \ 226 sync_fetch_and_umin_8 227 228 I386_FUNCTIONS := \ 229 i686.get_pc_thunk.eax \ 230 i686.get_pc_thunk.ebp \ 231 i686.get_pc_thunk.ebx \ 232 i686.get_pc_thunk.ecx \ 233 i686.get_pc_thunk.edi \ 234 i686.get_pc_thunk.edx \ 235 i686.get_pc_thunk.esi 236 237 # FIXME: Currently, compiler-rt is missing implementations for a number of the 238 # functions. Filter them out for now. 239 MISSING_FUNCTIONS := \ 240 cmpdf2 cmpsf2 div0 \ 241 ffssi2 \ 242 udiv_w_sdiv unorddf2 unordsf2 bswapdi2 \ 243 bswapsi2 \ 244 gcc_bcmp \ 245 do_global_dtors \ 246 i686.get_pc_thunk.eax i686.get_pc_thunk.ebp i686.get_pc_thunk.ebx \ 247 i686.get_pc_thunk.ecx i686.get_pc_thunk.edi i686.get_pc_thunk.edx \ 248 i686.get_pc_thunk.esi \ 249 aeabi_cdcmpeq aeabi_cdrcmple aeabi_cfcmpeq aeabi_cfrcmple aeabi_dcmpeq \ 250 aeabi_dcmpge aeabi_dcmpgt aeabi_dcmple aeabi_dcmplt aeabi_drsub \ 251 aeabi_fcmpeq \ aeabi_fcmpge aeabi_fcmpgt aeabi_fcmple aeabi_fcmplt \ 252 aeabi_frsub aeabi_idivmod aeabi_uidivmod 253 254 FUNCTIONS_ARMV6M := $(COMMON_FUNCTIONS) $(ARM_FUNCTIONS) 255 FUNCTIONS_ARM_ALL := $(COMMON_FUNCTIONS) $(ARM_FUNCTIONS) $(THUMB2_FUNCTIONS) 256 FUNCTIONS_I386 := $(COMMON_FUNCTIONS) $(I386_FUNCTIONS) 257 FUNCTIONS_X86_64 := $(COMMON_FUNCTIONS) 258 259 FUNCTIONS_ARMV6M := \ 260 $(filter-out $(MISSING_FUNCTIONS),$(FUNCTIONS_ARMV6M)) 261 FUNCTIONS_ARM_ALL := \ 262 $(filter-out $(MISSING_FUNCTIONS),$(FUNCTIONS_ARM_ALL)) 263 FUNCTIONS_I386 := \ 264 $(filter-out $(MISSING_FUNCTIONS),$(FUNCTIONS_I386)) 265 FUNCTIONS_X86_64 := \ 266 $(filter-out $(MISSING_FUNCTIONS),$(FUNCTIONS_X86_64)) 267 268 FUNCTIONS.soft_static.armv6m := $(FUNCTIONS_ARMV6M) 269 FUNCTIONS.soft_pic.armv6m := $(FUNCTIONS_ARMV6M) 270 271 FUNCTIONS.soft_static.armv7m := $(FUNCTIONS_ARM_ALL) 272 FUNCTIONS.soft_pic.armv7m := $(FUNCTIONS_ARM_ALL) 273 274 FUNCTIONS.soft_static.armv7em := $(FUNCTIONS_ARM_ALL) 275 FUNCTIONS.hard_static.armv7em := $(FUNCTIONS_ARM_ALL) 276 FUNCTIONS.soft_pic.armv7em := $(FUNCTIONS_ARM_ALL) 277 FUNCTIONS.hard_pic.armv7em := $(FUNCTIONS_ARM_ALL) 278 279 FUNCTIONS.soft_static.armv7 := $(FUNCTIONS_ARM_ALL) 280 FUNCTIONS.hard_static.armv7 := $(FUNCTIONS_ARM_ALL) 281 FUNCTIONS.soft_pic.armv7 := $(FUNCTIONS_ARM_ALL) 282 FUNCTIONS.hard_pic.armv7 := $(FUNCTIONS_ARM_ALL) 283 284 FUNCTIONS.hard_static.i386 := $(FUNCTIONS_I386) 285 FUNCTIONS.hard_pic.i386 := $(FUNCTIONS_I386) 286 287 FUNCTIONS.hard_static.x86_64 := $(FUNCTIONS_X86_64) 288 FUNCTIONS.hard_pic.x86_64 := $(FUNCTIONS_X86_64) 289
