Apply a workaround for a binutils issue with the .note.ABI-tag section
generated from lib/csu/common/crtbrand.c (which ultimately ends up in executables and shared libraries, via crt1.o, gcrt1.o or Scrt1.o). For all arches except sparc, gcc emits the section directive for the abitag struct in crtbrand.c with a PROGBITS type. However, newer versions of binutils (after 2.16.90) require the section to be of NOTE type, to guarantee that the .note.ABI-tag section correctly ends up in the first page of the final executable. Unfortunately, there is no clean way to tell gcc to use another section type, so crtbrand.c (or the C files that include it) must be compiled in multiple steps: - Compile the .c file to a .s file. - Edit the .s file to change the 'progbits' type to 'note', for the section directive that defines the .note.ABI-tag section. - Compile the .s file to an object file. These steps are done in the invididual Makefiles for each applicable arch. Reviewed by: kib
This commit is contained in:
parent
c1338c65d6
commit
9ef4e3afcb
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=217375
@ -12,12 +12,31 @@ CFLAGS+= -fno-omit-frame-pointer
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all: ${OBJS}
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all: ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES+= crt1.s gcrt1.s Scrt1.s
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gcrt1.o: crt1.c
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# See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not
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${CC} ${CFLAGS} -DGCRT -c -o gcrt1.o ${.CURDIR}/crt1.c
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# directly compiled to .o files.
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Scrt1.o: crt1.c
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crt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -c -o Scrt1.o ${.CURDIR}/crt1.c
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${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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crt1.o: crt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} crt1.s
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gcrt1.s: crt1.c
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${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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gcrt1.o: gcrt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} gcrt1.s
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Scrt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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Scrt1.o: Scrt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} Scrt1.s
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realinstall:
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realinstall:
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${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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@ -11,12 +11,31 @@ CFLAGS+= -I${.CURDIR}/../common \
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all: ${OBJS}
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all: ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES+= crt1.s gcrt1.s Scrt1.s
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gcrt1.o: crt1.c
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# See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not
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${CC} ${CFLAGS} -DGCRT -c -o gcrt1.o ${.ALLSRC}
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# directly compiled to .o files.
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Scrt1.o: crt1.c
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crt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -c -o Scrt1.o ${.ALLSRC}
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${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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crt1.o: crt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} crt1.s
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gcrt1.s: crt1.c
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${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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gcrt1.o: gcrt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} gcrt1.s
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Scrt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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Scrt1.o: Scrt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} Scrt1.s
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realinstall:
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realinstall:
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${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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@ -36,6 +36,23 @@ __FBSDID("$FreeBSD$");
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* Special ".note" entry specifying the ABI version. See
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* Special ".note" entry specifying the ABI version. See
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* http://www.netbsd.org/Documentation/kernel/elf-notes.html
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* http://www.netbsd.org/Documentation/kernel/elf-notes.html
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* for more information.
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* for more information.
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*
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* For all arches except sparc, gcc emits the section directive for the
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* following struct with a PROGBITS type. However, newer versions of binutils
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* (after 2.16.90) require the section to be of NOTE type, to guarantee that the
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* .note.ABI-tag section correctly ends up in the first page of the final
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* executable.
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*
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* Unfortunately, there is no clean way to tell gcc to use another section type,
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* so this C file (or the C file that includes it) must be compiled in multiple
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* steps:
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*
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* - Compile the .c file to a .s file.
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* - Edit the .s file to change the 'progbits' type to 'note', for the section
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* directive that defines the .note.ABI-tag section.
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* - Compile the .s file to an object file.
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*
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* These steps are done in the invididual Makefiles for each applicable arch.
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*/
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*/
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static const struct {
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static const struct {
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int32_t namesz;
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int32_t namesz;
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@ -11,19 +11,38 @@ FILESDIR= ${LIBDIR}
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CFLAGS+= -I${.CURDIR}/../common \
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CFLAGS+= -I${.CURDIR}/../common \
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-I${.CURDIR}/../../libc/include
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-I${.CURDIR}/../../libc/include
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CLEANFILES= ${FILES} crt1_c.o crt1_s.o gcrt1_c.o Scrt1_c.o
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CLEANFILES= ${FILES} crt1_c.o crt1_s.o gcrt1_c.o Scrt1_c.o
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CLEANFILES+= crt1_c.s gcrt1_c.s Scrt1_c.s
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gcrt1_c.o: crt1_c.c
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# See the comment in lib/csu/common/crtbrand.c for the reason crt1_c.c is not
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${CC} ${CFLAGS} -DGCRT -c -o gcrt1_c.o ${.CURDIR}/crt1_c.c
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# directly compiled to .o files.
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gcrt1_c.s: crt1_c.c
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${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1_c.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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gcrt1_c.o: gcrt1_c.s
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${CC} ${CFLAGS} -c -o ${.TARGET} gcrt1_c.s
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gcrt1.o: gcrt1_c.o crt1_s.o
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gcrt1.o: gcrt1_c.o crt1_s.o
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${LD} ${LDFLAGS} -o gcrt1.o -r crt1_s.o gcrt1_c.o
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${LD} ${LDFLAGS} -o gcrt1.o -r crt1_s.o gcrt1_c.o
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crt1_c.s: crt1_c.c
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${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1_c.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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crt1_c.o: crt1_c.s
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${CC} ${CFLAGS} -c -o ${.TARGET} crt1_c.s
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crt1.o: crt1_c.o crt1_s.o
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crt1.o: crt1_c.o crt1_s.o
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${LD} ${LDFLAGS} -o crt1.o -r crt1_s.o crt1_c.o
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${LD} ${LDFLAGS} -o crt1.o -r crt1_s.o crt1_c.o
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objcopy --localize-symbol _start1 crt1.o
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objcopy --localize-symbol _start1 crt1.o
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Scrt1_c.o: crt1_c.c
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Scrt1_c.s: crt1_c.c
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${CC} ${CFLAGS} -fPIC -DPIC -c -o Scrt1_c.o ${.CURDIR}/crt1_c.c
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${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.CURDIR}/crt1_c.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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Scrt1_c.o: Scrt1_c.s
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${CC} ${CFLAGS} -c -o ${.TARGET} Scrt1_c.s
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Scrt1.o: Scrt1_c.o crt1_s.o
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Scrt1.o: Scrt1_c.o crt1_s.o
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${LD} ${LDFLAGS} -o Scrt1.o -r crt1_s.o Scrt1_c.o
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${LD} ${LDFLAGS} -o Scrt1.o -r crt1_s.o Scrt1_c.o
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@ -11,12 +11,20 @@ all: ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES+= crt1_.o gcrt1_.o Scrt1_.o
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CLEANFILES+= crt1_.o gcrt1_.o Scrt1_.o
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CLEANFILES+= crtbrand.o gcrtbrand.o Scrtbrand.o
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CLEANFILES+= crtbrand.o gcrtbrand.o Scrtbrand.o
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CLEANFILES+= crtbrand.s gcrtbrand.s Scrtbrand.s
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crt1_.o: crt1.S
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crt1_.o: crt1.S
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${CC} ${CFLAGS} -c -o ${.TARGET} ${.ALLSRC}
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${CC} ${CFLAGS} -c -o ${.TARGET} ${.ALLSRC}
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crtbrand.o: crtbrand.c
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# See the comment in lib/csu/common/crtbrand.c for the reason crtbrand.c is not
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${CC} ${CFLAGS} -c -o ${.TARGET} ${.ALLSRC}
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# directly compiled to .o files.
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crtbrand.s: crtbrand.c
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${CC} ${CFLAGS} -S -o ${.TARGET} ${.ALLSRC}
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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crtbrand.o: crtbrand.s
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${CC} ${CFLAGS} -c -o ${.TARGET} crtbrand.s
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crt1.o: crt1_.o crtbrand.o
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crt1.o: crt1_.o crtbrand.o
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${LD} ${LDFLAGS} -r -o ${.TARGET} crt1_.o crtbrand.o
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${LD} ${LDFLAGS} -r -o ${.TARGET} crt1_.o crtbrand.o
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@ -24,8 +32,12 @@ crt1.o: crt1_.o crtbrand.o
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gcrt1_.o: crt1.S
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gcrt1_.o: crt1.S
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${CC} ${CFLAGS} -DGCRT -c -o ${.TARGET} ${.ALLSRC}
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${CC} ${CFLAGS} -DGCRT -c -o ${.TARGET} ${.ALLSRC}
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gcrtbrand.o: crtbrand.c
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gcrtbrand.s: crtbrand.c
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${CC} ${CFLAGS} -DGCRT -c -o ${.TARGET} ${.ALLSRC}
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${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.ALLSRC}
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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gcrtbrand.o: gcrtbrand.s
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${CC} ${CFLAGS} -c -o ${.TARGET} gcrtbrand.s
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gcrt1.o: gcrt1_.o gcrtbrand.o
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gcrt1.o: gcrt1_.o gcrtbrand.o
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${LD} ${LDFLAGS} -r -o ${.TARGET} ${.ALLSRC}
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${LD} ${LDFLAGS} -r -o ${.TARGET} ${.ALLSRC}
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@ -33,8 +45,12 @@ gcrt1.o: gcrt1_.o gcrtbrand.o
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Scrt1_.o: crt1.S
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Scrt1_.o: crt1.S
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${CC} ${CFLAGS} -fPIC -DPIC -c -o ${.TARGET} ${.ALLSRC}
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${CC} ${CFLAGS} -fPIC -DPIC -c -o ${.TARGET} ${.ALLSRC}
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Scrtbrand.o: crtbrand.c
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Scrtbrand.s: crtbrand.c
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${CC} ${CFLAGS} -fPIC -DPIC -c -o ${.TARGET} ${.ALLSRC}
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${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.ALLSRC}
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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Scrtbrand.o: Scrtbrand.s
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${CC} ${CFLAGS} -c -o ${.TARGET} Scrtbrand.s
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Scrt1.o: Scrt1_.o Scrtbrand.o
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Scrt1.o: Scrt1_.o Scrtbrand.o
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${LD} ${LDFLAGS} -r -o ${.TARGET} ${.ALLSRC}
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${LD} ${LDFLAGS} -r -o ${.TARGET} ${.ALLSRC}
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@ -11,12 +11,31 @@ CFLAGS+= -I${.CURDIR}/../common \
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all: ${OBJS}
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all: ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES= ${OBJS}
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CLEANFILES+= crt1.s gcrt1.s Scrt1.s
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gcrt1.o: crt1.c
|
# See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not
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${CC} ${CFLAGS} -DGCRT -c -o gcrt1.o ${.ALLSRC}
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# directly compiled to .o files.
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Scrt1.o: crt1.c
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crt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -c -o Scrt1.o ${.ALLSRC}
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${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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crt1.o: crt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} crt1.s
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gcrt1.s: crt1.c
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${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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gcrt1.o: gcrt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} gcrt1.s
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Scrt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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Scrt1.o: Scrt1.s
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${CC} ${CFLAGS} -c -o ${.TARGET} Scrt1.s
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realinstall:
|
realinstall:
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${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
|
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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|
@ -11,12 +11,31 @@ CFLAGS+= -I${.CURDIR}/../common \
|
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all: ${OBJS}
|
all: ${OBJS}
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|
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||||||
CLEANFILES= ${OBJS}
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CLEANFILES= ${OBJS}
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||||||
|
CLEANFILES+= crt1.s gcrt1.s Scrt1.s
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|
|
||||||
gcrt1.o: crt1.c
|
# See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not
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${CC} ${CFLAGS} -DGCRT -c -o gcrt1.o ${.ALLSRC}
|
# directly compiled to .o files.
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||||||
|
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Scrt1.o: crt1.c
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crt1.s: crt1.c
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${CC} ${CFLAGS} -fPIC -DPIC -c -o Scrt1.o ${.ALLSRC}
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${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
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sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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||||||
|
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||||||
|
crt1.o: crt1.s
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||||||
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${CC} ${CFLAGS} -c -o ${.TARGET} crt1.s
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|
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||||||
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gcrt1.s: crt1.c
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||||||
|
${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
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||||||
|
sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
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||||||
|
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||||||
|
gcrt1.o: gcrt1.s
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||||||
|
${CC} ${CFLAGS} -c -o ${.TARGET} gcrt1.s
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||||||
|
|
||||||
|
Scrt1.s: crt1.c
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||||||
|
${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.CURDIR}/crt1.c
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||||||
|
sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
|
||||||
|
|
||||||
|
Scrt1.o: Scrt1.s
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||||||
|
${CC} ${CFLAGS} -c -o ${.TARGET} Scrt1.s
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||||||
|
|
||||||
realinstall:
|
realinstall:
|
||||||
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
|
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
|
||||||
|
@ -12,9 +12,24 @@ CFLAGS+= -Wall -Wno-unused \
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all: ${OBJS}
|
all: ${OBJS}
|
||||||
|
|
||||||
CLEANFILES= ${OBJS}
|
CLEANFILES= ${OBJS}
|
||||||
|
CLEANFILES+= crt1.s gcrt1.s
|
||||||
|
|
||||||
gcrt1.o: crt1.c
|
# See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not
|
||||||
${CC} ${CFLAGS} -DGCRT -c -o gcrt1.o ${.ALLSRC}
|
# directly compiled to .o files.
|
||||||
|
|
||||||
|
crt1.s: crt1.c
|
||||||
|
${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
|
||||||
|
sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
|
||||||
|
|
||||||
|
crt1.o: crt1.s
|
||||||
|
${CC} ${CFLAGS} -c -o ${.TARGET} crt1.s
|
||||||
|
|
||||||
|
gcrt1.s: crt1.c
|
||||||
|
${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
|
||||||
|
sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' ${.TARGET}
|
||||||
|
|
||||||
|
gcrt1.o: gcrt1.s
|
||||||
|
${CC} ${CFLAGS} -c -o ${.TARGET} gcrt1.s
|
||||||
|
|
||||||
realinstall:
|
realinstall:
|
||||||
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
|
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
|
||||||
|
Loading…
Reference in New Issue
Block a user