make/platform/clang_macho_embedded.mk

   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 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)