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| author | kib <kib@FreeBSD.org> | 2011-01-25 21:06:49 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2011-01-25 21:06:49 +0000 |
| commit | 736c72ab1a257909fc96a743c7c7e9a1e584cbaa (patch) | |
| tree | 8aa5d0c814842d7b89ddc6cca60d26df67a9a027 /lib/libc | |
| parent | b902a8a1767c4005becfcbfd51997125a1f92968 (diff) | |
| download | FreeBSD-src-736c72ab1a257909fc96a743c7c7e9a1e584cbaa.zip FreeBSD-src-736c72ab1a257909fc96a743c7c7e9a1e584cbaa.tar.gz | |
Emit .note.GNU-stack for the syscall stubs generated by libc only on
architectures that support this .note. In particular, do not unneccessary
emit the notes on ia64 and sparc64, which ABI require non-executable stacks.
Tested by: marcel
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sys/Makefile.inc | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc index 7a89471..fe6116a 100644 --- a/lib/libc/sys/Makefile.inc +++ b/lib/libc/sys/Makefile.inc @@ -53,16 +53,23 @@ SYM_MAPS+= ${.CURDIR}/sys/Symbol.map # Generated files CLEANFILES+= ${SASM} ${SPSEUDO} +.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" || \ + ${MACHINE_CPUARCH} == "powerpc" +NOTE_GNU_STACK='\t.section .note.GNU-stack,"",%%progbits\n' +.else +NOTE_GNU_STACK='' +.endif + ${SASM}: printf '#include "compat.h"\n' > ${.TARGET} printf '#include "SYS.h"\nRSYSCALL(${.PREFIX})\n' >> ${.TARGET} - printf '\t.section .note.GNU-stack,"",%%progbits\n' >>${.TARGET} + printf ${NOTE_GNU_STACK} >>${.TARGET} ${SPSEUDO}: printf '#include "compat.h"\n' > ${.TARGET} printf '#include "SYS.h"\nPSEUDO(${.PREFIX:S/_//})\n' \ >> ${.TARGET} - printf '\t.section .note.GNU-stack,"",%%progbits\n' >>${.TARGET} + printf ${NOTE_GNU_STACK} >>${.TARGET} MAN+= abort2.2 accept.2 access.2 acct.2 adjtime.2 \ aio_cancel.2 aio_error.2 aio_read.2 aio_return.2 \ |
