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authorH.J. Lu <hjl.tools@gmail.com>2018-01-11 19:01:39 -0800
committerH.J. Lu <hjl.tools@gmail.com>2018-01-11 19:01:52 -0800
commit47acac12c83f173481debc64618626b50ecf7498 (patch)
treee48aae92826c2b354a47ca3721c85cfa93b4194e /ld/ChangeLog
parent6181e9c2c5ba252ac016f51903dc35d7bfbbca71 (diff)
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ld: Add "-z separate-code" option to ELF linker
The new "-z separate-code" option will generate separate code LOAD segment which must be in wholly disjoint pages from any other data. include/ PR ld/22393 * bfdlink.h (bfd_link_info): Add separate_code. ld/ PR ld/22393 * NEWS: Mention "-z separate-code". * emultempl/elf32.em (gld${EMULATION_NAME}_get_script): Get builtin linker scripts and return linker scripts from disk for "-z separate-code". (gld${EMULATION_NAME}_handle_option): Handle "-z separate-code" and "-z noseparate-code". * genscripts.sh: Generate linker scripts for "-z separate-code". (LD_FLAG): Set to *textonly for "-z separate-code". * ld.texinfo: Document "-z separate-code". * lexsup.c (elf_shlib_list_options): Add linker help messsages for "-z separate-code" and "-z noseparate-code". * scripttempl/elf.sc (SEPARATE_TEXT): New (TEXT_SEGMENT_ALIGN): Likewise. Use ${TEXT_SEGMENT_ALIGN} to align and pad text segment to ${MAXPAGESIZE}.
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@@ -1,5 +1,24 @@
2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
+ PR ld/22393
+ * NEWS: Mention "-z separate-code".
+ * emultempl/elf32.em (gld${EMULATION_NAME}_get_script): Get
+ builtin linker scripts and return linker scripts from disk for
+ "-z separate-code".
+ (gld${EMULATION_NAME}_handle_option): Handle "-z separate-code"
+ and "-z noseparate-code".
+ * genscripts.sh: Generate linker scripts for "-z separate-code".
+ (LD_FLAG): Set to *textonly for "-z separate-code".
+ * ld.texinfo: Document "-z separate-code".
+ * lexsup.c (elf_shlib_list_options): Add linker help messsages
+ for "-z separate-code" and "-z noseparate-code".
+ * scripttempl/elf.sc (SEPARATE_TEXT): New
+ (TEXT_SEGMENT_ALIGN): Likewise.
+ Use ${TEXT_SEGMENT_ALIGN} to align and pad text segment to
+ ${MAXPAGESIZE}.
+
+2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
+
PR ld/22649
* testsuite/ld-elf/pr22649-1.s: New file.
* testsuite/ld-elf/pr22649-2a.s: Likewise.