Mercurial > pub > dyncall > dyncall
diff portasm/portasm-x64.S @ 166:d5705f226298
- added portasm support for adding .section .note.GNU-stack "hints" marking generated .o files from assembly files as not needing an executable stack
* needed to be done manually in assembly files, in contrast to C translation units where gcc adds such hints automatically
* this is for security, and better/easier integration of dyncall into other projects and builds, as dyncall doesn't need an executable stack
* thanks to Thorsten Behrens for bringing this up to our intention and providing a first analysis
* currently only done on Linux, but will be added across other platforms (where applicable) after some testing
| author | cslag |
|---|---|
| date | Thu, 05 Jan 2017 11:07:29 +0100 |
| parents | 572aff021627 |
| children | 2bce7629f541 |
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--- a/portasm/portasm-x64.S Thu Jan 05 10:35:12 2017 +0100 +++ b/portasm/portasm-x64.S Thu Jan 05 11:07:29 2017 +0100 @@ -69,6 +69,8 @@ # define JNE(X) jne X # define CMP(A,B) cmp B,A # define LOCAL(X) X +/* @@@ check if masm support wanted/needed */ +# define SECTION_NOTE_NXSTACK #else /* GNU/SunPro Assembler AT&T Syntax */ .text @@ -152,5 +154,11 @@ # define FLDL(X) fldl X # define SET(K,V) .set K,V # define LOCAL(X) .X +/* @@@ extend following to probably *all* ELF targets - needs testing, though */ +# if defined(OS_Linux) +# define SECTION_NOTE_NXSTACK .section .note.GNU-stack,"",@progbits +# else +# define SECTION_NOTE_NXSTACK +# endif #endif