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c969310c99
The right unwinding stop indicator should be CFI-undefined PC. https://dwarfstd.org/doc/Dwarf3.pdf - page 118: If a Return Address register is defined in the virtual unwind table, and its rule is undefined (for example, by DW_CFA_undefined), then there is no return address and no call address, and the virtual unwind of stack activations is complete. This requires the crt code be built with unwind tables, for that remove -fno-asynchronous-unwind-tables to enable unwind tables generation. PR: 241562, 246322, 246537 Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D40780
85 lines
2 KiB
Makefile
85 lines
2 KiB
Makefile
# $FreeBSD$
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NO_WMISSING_VARIABLE_DECLARATIONS=
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# Can't instrument these files since that breaks non-sanitized programs.
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MK_ASAN:= no
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MK_UBSAN:= no
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.include <src.opts.mk>
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MK_SSP= no
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.if !defined(BUILDING_TESTS)
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OBJS+= Scrt1.o crt1.o gcrt1.o
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OBJS+= crtbegin.o crtbeginS.o crtbeginT.o
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OBJS+= crtend.o crtendS.o
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OBJS+= crti.o crtn.o
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CRT1OBJS+= crtbrand.o feature_note.o ignore_init_note.o
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ACFLAGS+= -DLOCORE
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CFLAGS+= -DSTRIP_FBSDID
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CFLAGS+= -fno-omit-frame-pointer
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CFLAGS+= -I${.CURDIR:H}/common \
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-I${SRCTOP}/lib/libc/include
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CFLAGS_CRTS= -DSHARED ${PICFLAG}
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FILES= ${OBJS}
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FILESMODE= ${LIBMODE}
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FILESOWN= ${LIBOWN}
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FILESGRP= ${LIBGRP}
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FILESDIR= ${LIBDIR}
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# These FILES qualify as libraries for the purpose of LIBRARIES_ONLY.
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.undef LIBRARIES_ONLY
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CRT1SRC?= crt1_c.c
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CRT1OBJ?=
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CLEANFILES+= ${OBJS} ${CRT1OBJS} crt1_c.o gcrt1_c.o Scrt1_c.o
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CLEANFILES+= crti_s.o ${CRT1SRC:C/.[S|c]$/.o/}
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crt1.o: ${CRT1SRC:C/.[S|c]$/.o/} ${CRT1OBJS} ${CRT1OBJ}
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${LD} ${_LDFLAGS} -o ${.TARGET} -r ${.ALLSRC:M*.o}
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.if ${MACHINE_ARCH} == "i386"
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${OBJCOPY} --localize-symbol _start1 ${.TARGET}
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.endif
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gcrt1_c.o: ${CRT1SRC}
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${CC} ${CFLAGS} -DGCRT -c -o ${.TARGET} ${.CURDIR}/${CRT1SRC}
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gcrt1.o: gcrt1_c.o ${CRT1OBJS} ${CRT1OBJ}
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${LD} ${_LDFLAGS} -o ${.TARGET} -r ${.ALLSRC:M*.o}
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Scrt1_c.o: ${CRT1SRC}
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${CC} ${CFLAGS} -fPIC -DPIC -c -o ${.TARGET} ${.CURDIR}/${CRT1SRC}
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Scrt1.o: Scrt1_c.o ${CRT1OBJS} ${CRT1OBJ}
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${LD} ${_LDFLAGS} -o ${.TARGET} -r ${.ALLSRC:M*.o}
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.if ${MACHINE_ARCH} == "i386"
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${OBJCOPY} --localize-symbol _start1 ${.TARGET}
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.endif
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crtbegin.o: crtbegin.c
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crtbeginS.o: crtbegin.c
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crtbeginT.o: crtbegin.c
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crtend.o: crtend.c
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crtendS.o: crtend.c
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crtbegin.o crtend.o crtbeginT.o:
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${CC} ${CFLAGS} -I${.CURDIR} -c -o ${.TARGET} ${.ALLSRC:N*.h:[1]}
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crtbeginS.o crtendS.o:
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${CC} ${CFLAGS} -I${.CURDIR} ${CFLAGS_CRTS} -c -o ${.TARGET} \
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${.ALLSRC:N*.h:[1]}
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crti_s.o: crti.S
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${CC} ${CFLAGS} ${ACFLAGS} -c ${.ALLSRC:M*.S} -o ${.TARGET}
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crti.o: crti_s.o crtbrand.o
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${LD} ${_LDFLAGS} -o ${.TARGET} -r ${.ALLSRC:M*.o}
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.endif
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.include "../Makefile.inc"
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