1# $FreeBSD$ 2 3PACKAGE= clibs 4GCCDIR= ${.CURDIR}/../../../contrib/gcc 5GCCLIB= ${.CURDIR}/../../../contrib/gcclibs 6CCDIR= ${.CURDIR}/../../usr.bin/cc 7COMPILERRTDIR= ${.CURDIR}/../../../contrib/compiler-rt 8UNWINDINCDIR= ${.CURDIR}/../../../contrib/llvm/projects/libunwind/include 9UNWINDSRCDIR= ${.CURDIR}/../../../contrib/llvm/projects/libunwind/src 10 11SHLIB_NAME= libgcc_s.so.1 12SHLIBDIR?= /lib 13 14.include <src.opts.mk> 15# 16# libgcc is linked in last and thus cannot depend on ssp symbols coming 17# from earlier libraries. Disable stack protection for this library. 18# 19MK_SSP= no 20 21.include "${CCDIR}/Makefile.tgt" 22.include "${CCDIR}/cc_tools/Makefile.hdrs" 23 24.if ${TARGET_CPUARCH} == "arm" 25CFLAGS+= -DTARGET_ARM_EABI 26.endif 27 28.PATH: ${GCCDIR}/config/${GCC_CPU} ${GCCDIR}/config ${GCCDIR} 29 30CFLAGS+= -DIN_GCC -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \ 31 -DHAVE_GTHR_DEFAULT \ 32 -I${GCCLIB}/include \ 33 -I${GCCDIR}/config -I${GCCDIR} -I. 34 35LDFLAGS+= -nodefaultlibs 36LIBADD+= c 37 38SOBJS= # added to below in various ways depending on TARGET_CPUARCH 39 40#--------------------------------------------------------------------------- 41# 42# Library members defined in libgcc2.c. 43# When upgrading GCC, obtain the following list from mklibgcc.in 44# 45LIB2FUNCS= _muldi3 _negdi2 _lshrdi3 _ashldi3 _ashrdi3 \ 46 _cmpdi2 _ucmpdi2 \ 47 _enable_execute_stack _trampoline __main _absvsi2 _absvdi2 _addvsi3 \ 48 _addvdi3 _subvsi3 _subvdi3 _mulvsi3 _mulvdi3 _negvsi2 _negvdi2 _ctors \ 49 _ffssi2 _ffsdi2 _clz _clzsi2 _clzdi2 _ctzsi2 _ctzdi2 _popcount_tab \ 50 _popcountsi2 _popcountdi2 _paritysi2 _paritydi2 _powisf2 _powidf2 \ 51 _powixf2 _powitf2 _mulsc3 _muldc3 _mulxc3 _multc3 _divsc3 _divdc3 \ 52 _divxc3 _divtc3 _bswapsi2 _bswapdi2 53.if ${COMPILER_TYPE} != "clang" || ${TARGET_CPUARCH} != "arm" 54LIB2FUNCS+= _clear_cache 55.endif 56 57# The floating-point conversion routines that involve a single-word integer. 58.for mode in sf df xf 59LIB2FUNCS+= _fixuns${mode}si 60.endfor 61 62# Likewise double-word routines. 63.if ${TARGET_CPUARCH} != "aarch64" && ${TARGET_CPUARCH} != "arm" && \ 64 ${TARGET_CPUARCH} != "riscv64" 65# These are implemented in an ARM specific file but will not be filtered out. 66# RISCVTODO: can't compile 67.for mode in sf df xf tf 68LIB2FUNCS+= _fix${mode}di _fixuns${mode}di 69LIB2FUNCS+= _floatdi${mode} _floatundi${mode} 70.endfor 71.endif 72 73LIB2ADD = $(LIB2FUNCS_EXTRA) 74LIB2ADD_ST = $(LIB2FUNCS_STATIC_EXTRA) 75 76# Additional sources to handle exceptions; overridden by targets as needed. 77.if ${MK_LLVM_LIBUNWIND} != "no" 78 79.PATH: ${COMPILERRTDIR}/lib/builtins 80.PATH: ${UNWINDSRCDIR} 81LIB2ADDEH = gcc_personality_v0.c \ 82 int_util.c \ 83 Unwind-EHABI.cpp \ 84 Unwind-sjlj.c \ 85 UnwindLevel1-gcc-ext.c \ 86 UnwindLevel1.c \ 87 UnwindRegistersRestore.S \ 88 UnwindRegistersSave.S \ 89 libunwind.cpp 90 91CFLAGS+= -I${UNWINDINCDIR} -I${.CURDIR} -D_LIBUNWIND_IS_NATIVE_ONLY 92.if empty(CXXFLAGS:M-std=*) 93CXXFLAGS+= -std=c++11 94.endif 95CXXFLAGS+= -fno-rtti 96STATIC_CXXFLAGS+= -fvisibility=hidden -fPIC 97.if ${MK_DIRDEPS_BUILD} == "yes" 98# Avoid dependency on lib/libc++ 99CFLAGS+= -I${SRCTOP}/contrib/libc++/include 100.endif 101 102.else # MK_LLVM_LIBUNWIND 103 104# 105# Prevent the potential unwind.h from gcc (generated) 106# to be in the include path before the one from llvm unwind 107# 108CFLAGS+= -I${CCDIR}/cc_tools 109 110.if ${TARGET_CPUARCH} == "arm" 111LIB2ADDEH = unwind-arm.c libunwind-arm.S pr-support.c unwind-c.c 112.else 113LIB2ADDEH = unwind-dw2.c unwind-dw2-fde-glibc.c unwind-sjlj.c gthr-gnat.c \ 114 unwind-c.c 115.endif 116 117.endif # MK_LLVM_LIBUNWIND 118 119LIB2ADDEHSTATIC = $(LIB2ADDEH) 120LIB2ADDEHSHARED = $(LIB2ADDEH) 121 122# List of extra C and assembler files to add to static and shared libgcc2. 123# Assembler files should have names ending in `.asm'. 124LIB2FUNCS_EXTRA = 125 126# List of extra C and assembler files to add to static libgcc2. 127# Assembler files should have names ending in `.asm'. 128LIB2FUNCS_STATIC_EXTRA = 129 130# Defined in libgcc2.c, included only in the static library. 131# KAN: Excluded _sf_to_tf and _df_to_tf as TPBIT_FUNCS are not 132# built on any of our platforms. 133LIB2FUNCS_ST = _eprintf __gcc_bcmp 134 135FPBIT_FUNCS = _pack_sf _unpack_sf _addsub_sf _mul_sf _div_sf \ 136 _fpcmp_parts_sf _compare_sf _eq_sf _ne_sf _gt_sf _ge_sf \ 137 _lt_sf _le_sf _unord_sf _si_to_sf _sf_to_si _negate_sf _make_sf \ 138 _sf_to_df _thenan_sf _sf_to_usi _usi_to_sf 139 140DPBIT_FUNCS = _pack_df _unpack_df _addsub_df _mul_df _div_df \ 141 _fpcmp_parts_df _compare_df _eq_df _ne_df _gt_df _ge_df \ 142 _lt_df _le_df _unord_df _si_to_df _df_to_si _negate_df _make_df \ 143 _df_to_sf _thenan_df _df_to_usi _usi_to_df 144 145TPBIT_FUNCS = _pack_tf _unpack_tf _addsub_tf _mul_tf _div_tf \ 146 _fpcmp_parts_tf _compare_tf _eq_tf _ne_tf _gt_tf _ge_tf \ 147 _lt_tf _le_tf _unord_tf _si_to_tf _tf_to_si _negate_tf _make_tf \ 148 _tf_to_df _tf_to_sf _thenan_tf _tf_to_usi _usi_to_tf 149 150# These might cause a divide overflow trap and so are compiled with 151# unwinder info. 152LIB2_DIVMOD_FUNCS = _divdi3 _moddi3 _udivdi3 _umoddi3 _udiv_w_sdiv _udivmoddi4 153 154#----------------------------------------------------------------------- 155# 156# Platform specific bits. 157# When upgrading GCC, get the following definitions from config/<cpu>/t-* 158# 159.if ${TARGET_CPUARCH} == "arm" 160# from config/arm/t-strongarm-elf 161CFLAGS+= -Dinhibit_libc -fno-inline 162CFLAGS.clang+= -fheinous-gnu-extensions 163 164LIB1ASMSRC = lib1funcs.asm 165LIB1ASMFUNCS = _dvmd_tls _bb_init_func 166# Some compilers generate __aeabi_ functions libgcc_s is missing 167LIBADD+= compiler_rt 168.endif 169 170.if ${TARGET_CPUARCH} == mips 171LIB2FUNCS_EXTRA = floatunsidf.c floatunsisf.c 172# ABIs other than o32 need this 173.if ${TARGET_ARCH} != "mips" && ${TARGET_ARCH} != "mipsel" 174LIB2FUNCS_EXTRA+= floatdidf.c fixunsdfsi.c 175LIB2FUNCS_EXTRA+= floatdisf.c floatundidf.c 176LIB2FUNCS_EXTRA+= fixsfdi.c floatundisf.c 177LIB2FUNCS_EXTRA+= fixdfdi.c fixunssfsi.c 178.endif 179.endif 180 181.if ${TARGET_ARCH} == "powerpc" 182# from config/rs6000/t-ppccomm 183LIB2FUNCS_EXTRA = tramp.asm 184LIB2FUNCS_STATIC_EXTRA = eabi.asm 185.endif 186 187.if ${TARGET_ARCH} == "powerpc64" 188# from config/rs6000/t-ppccomm 189LIB2FUNCS_EXTRA = tramp.asm 190.endif 191 192.if ${TARGET_CPUARCH} == "sparc64" 193# from config/sparc/t-elf 194LIB1ASMSRC = lb1spc.asm 195LIB1ASMFUNCS = _mulsi3 _divsi3 _modsi3 196.endif 197 198#----------------------------------------------------------------------- 199 200# Remove any objects from LIB2FUNCS and LIB2_DIVMOD_FUNCS that are 201# defined as optimized assembly code in LIB1ASMFUNCS. 202.if defined(LIB1ASMFUNCS) 203.for sym in ${LIB1ASMFUNCS} 204LIB2FUNCS:= ${LIB2FUNCS:S/${sym}//g} 205LIB2_DIVMOD_FUNCS:= ${LIB2_DIVMOD_FUNCS:S/${sym}//g} 206.endfor 207.endif 208 209COMMONHDRS= tm.h tconfig.h options.h gthr-default.h 210.if ${MK_LLVM_LIBUNWIND} != "no" 211# unwind.h is a generated file when MK_LLVM_LIBUNWIND == "no", and a stale 212# copy may be left behind in OBJDIR when switching, so remove it explicitly. 213beforebuild: 214 @rm -f ${.OBJDIR}/unwind.h 215.else 216COMMONHDRS+= unwind.h 217.endif 218 219#----------------------------------------------------------------------- 220# 221# Helpful shortcuts for compiler invocations. 222# 223HIDE = -fvisibility=hidden -DHIDE_EXPORTS 224CC_T = ${CC} -c ${CFLAGS} ${HIDE} -fPIC 225CC_P = ${CC} -c ${CFLAGS} ${HIDE} -p -fPIC 226CC_S = ${CC} -c ${CFLAGS} ${SHARED_CFLAGS} ${PICFLAG} -DSHARED 227 228#----------------------------------------------------------------------- 229# 230# Functions from libgcc2.c 231# 232STD_CFLAGS = 233DIV_CFLAGS = -fexceptions -fnon-call-exceptions 234 235STD_FUNCS = ${LIB2FUNCS} 236DIV_FUNCS = ${LIB2_DIVMOD_FUNCS} 237 238STD_CFILE = libgcc2.c 239DIV_CFILE = libgcc2.c 240 241OBJ_GRPS = STD DIV 242 243#----------------------------------------------------------------------- 244# 245# Floating point emulation functions 246# 247.if ${TARGET_CPUARCH} == "armNOT_YET" || \ 248 ${TARGET_CPUARCH} == "powerpc" || ${TARGET_CPUARCH} == "sparc64" 249 250FPBIT_CFLAGS = -DFINE_GRAINED_LIBRARIES -DFLOAT 251DPBIT_CFLAGS = -DFINE_GRAINED_LIBRARIES 252 253FPBIT_CFILE = config/fp-bit.c 254DPBIT_CFILE = config/fp-bit.c 255 256OBJ_GRPS += FPBIT DPBIT 257.endif 258 259#----------------------------------------------------------------------- 260# 261# Generic build rules for object groups defined above 262# 263.for T in ${OBJ_GRPS} 264${T}_OBJS_T = ${${T}_FUNCS:S/$/.o/} 265${T}_OBJS_P = ${${T}_FUNCS:S/$/.po/} 266${T}_OBJS_S = ${${T}_FUNCS:S/$/.pico/} 267SOBJS += ${${T}_FUNCS:S/$/.pico/} 268 269${${T}_OBJS_T}: ${${T}_CFILE} ${COMMONHDRS} 270 ${CC_T} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c} 271${${T}_OBJS_P}: ${${T}_CFILE} ${COMMONHDRS} 272 ${CC_P} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c} 273${${T}_OBJS_S}: ${${T}_CFILE} ${COMMONHDRS} 274 ${CC_S} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c} 275.endfor 276 277#----------------------------------------------------------------------- 278# 279# Extra objects coming from separate files 280# 281.if !empty(LIB2ADD) 282SOBJS += ${LIB2ADD:R:S/$/.pico/} 283.endif 284 285#----------------------------------------------------------------------- 286# 287# Objects that should be in static library only. 288# 289SYMS_ST = ${LIB2FUNCS_ST} ${LIB2ADD_ST} 290STAT_OBJS_T = ${SYMS_ST:S/$/.o/} 291STAT_OBJS_P = ${SYMS_ST:S/$/.po/} 292STATICOBJS = ${SYMS_ST:S/$/.o/} 293 294${STAT_OBJS_T}: ${STD_CFILE} ${COMMONHDRS} 295 ${CC_T} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c} 296${STAT_OBJS_P}: ${STD_CFILE} ${COMMONHDRS} 297 ${CC_P} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c} 298 299#----------------------------------------------------------------------- 300# 301# Assembler files. 302# 303.if defined(LIB1ASMSRC) 304ASM_T = ${LIB1ASMFUNCS:S/$/.o/} 305ASM_P = ${LIB1ASMFUNCS:S/$/.po/} 306ASM_S = ${LIB1ASMFUNCS:S/$/.pico/} 307ASM_V = ${LIB1ASMFUNCS:S/$/.vis/} 308SOBJS += ${LIB1ASMFUNCS:S/$/.pico/} 309 310${ASM_T}: ${LIB1ASMSRC} ${.PREFIX}.vis 311 ${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \ 312 -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis} 313${ASM_P}: ${LIB1ASMSRC} ${.PREFIX}.vis 314 ${CC} -x assembler-with-cpp -p -c ${CFLAGS} -DL${.PREFIX} \ 315 -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis} 316${ASM_S}: ${LIB1ASMSRC} 317 ${CC} -x assembler-with-cpp -c ${PICFLAG} ${CFLAGS} -DL${.PREFIX} \ 318 -o ${.TARGET} ${.ALLSRC:N*.h} 319${ASM_V}: ${LIB1ASMSRC} 320 ${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \ 321 -o ${.PREFIX}.vo ${.ALLSRC:N*.h} 322 ( ${NM} -pg ${.PREFIX}.vo | \ 323 awk 'NF == 3 && $$2 !~ /^[UN]$$/ { print "\t.hidden ", $$3 }'\ 324 ) > ${.TARGET} 325 326CLEANFILES += ${ASM_V} ${ASM_V:R:S/$/.vo/} 327.endif 328 329#----------------------------------------------------------------------- 330# 331# Exception handling / unwinding support. 332# 333EH_OBJS_T = ${LIB2ADDEHSTATIC:R:S/$/.o/} 334EH_OBJS_P = ${LIB2ADDEHSTATIC:R:S/$/.po/} 335EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.pico/} 336EH_CFLAGS = -fexceptions -D__GLIBC__=3 -DElfW=__ElfN 337.if ${TARGET_CPUARCH} != "riscv64" 338# RISCVTODO: unwinding support 339SOBJS += ${EH_OBJS_S} 340.endif 341 342.for _src in ${LIB2ADDEHSTATIC:M*.c} 343${_src:R:S/$/.o/}: ${_src} ${COMMONHDRS} 344 ${CC_T} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC} 345${_src:R:S/$/.po/}: ${_src} ${COMMONHDRS} 346 ${CC_P} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC} 347.endfor 348.for _src in ${LIB2ADDEHSHARED:M*.c} 349${_src:R:S/$/.pico/}: ${_src} ${COMMONHDRS} 350 ${CC_S} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC} 351.endfor 352 353 354CLEANFILES += ${COMMONHDRS} 355CLEANFILES += cs-*.h option* 356 357#----------------------------------------------------------------------- 358# 359# Build symbol version map 360# 361SHLIB_MKMAP = ${GCCDIR}/mkmap-symver.awk 362SHLIB_MKMAP_OPTS = 363SHLIB_MAPFILES = ${GCCDIR}/libgcc-std.ver 364.if ${TARGET_CPUARCH} == "arm" 365SHLIB_MAPFILES += ${GCCDIR}/config/arm/libgcc-bpabi.ver 366.endif 367VERSION_MAP = libgcc.map 368 369libgcc.map: ${SHLIB_MKMAP} ${SHLIB_MAPFILES} ${SOBJS} 370 ( ${NM} -pg ${SOBJS};echo %% ; \ 371 cat ${SHLIB_MAPFILES} \ 372 | sed -e '/^[ ]*#/d' \ 373 -e 's/^%\(if\|else\|elif\|endif\|define\)/#\1/' \ 374 | ${CC} ${CFLAGS} -E -xassembler-with-cpp -; \ 375 ) | awk -f ${SHLIB_MKMAP} ${SHLIB_MKMAP_OPTS} > ${.TARGET} 376 377CLEANFILES += libgcc.map 378 379#----------------------------------------------------------------------- 380# 381# Build additional static libgcc_eh[_p].a libraries. 382# 383libgcc_eh.a: ${EH_OBJS_T} 384 @${ECHO} building static gcc_eh library 385 @rm -f ${.TARGET} 386 ${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_T} | tsort -q` 387 ${RANLIB} ${RANLIBFLAGS} ${.TARGET} 388 389_LIBS+= libgcc_eh.a 390 391.if ${MK_PROFILE} != "no" 392libgcc_eh_p.a: ${EH_OBJS_P} 393 @${ECHO} building profiled gcc_eh library 394 @rm -f ${.TARGET} 395 ${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_P} | tsort -q` 396 ${RANLIB} ${RANLIBFLAGS} ${.TARGET} 397 398_LIBS+= libgcc_eh_p.a 399.endif 400 401_libinstall: _lib-eh-install 402 403_lib-eh-install: 404.if ${MK_INSTALLLIB} != "no" 405 ${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \ 406 ${_INSTALLFLAGS} libgcc_eh.a ${DESTDIR}${LIBDIR} 407.endif 408.if ${MK_PROFILE} != "no" 409 ${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \ 410 ${_INSTALLFLAGS} libgcc_eh_p.a ${DESTDIR}${LIBDIR} 411.endif 412 413CLEANFILES+= libgcc_eh.a libgcc_eh_p.a ${EH_OBJS_T} ${EH_OBJS_P} 414 415.include <bsd.lib.mk> 416 417.SUFFIXES: .vis .vo 418