ld: Don't define __rel[a]_iplt_start/__rel[a]_iplt_end in PIE

__rel[a]_iplt_start and __rel[a]_iplt_end are defined to handle IFUNC in
static executables.  For PIE, since IFUNC is handled as the part of the
normal dynamic relocation processing, there is no need to define these
symbols in PIE.

	* scripttempl/elf.sc (CREATE_PIC): New.  Set for CREATE_SHLIB or
	CREATE_PIE.
	(__rel_iplt_start): Don't define for CREATE_PIC.
	(__rel_iplt_end): Likewise.
	(__rela_iplt_start): Likewise.
	(__rela_iplt_end): Likewise.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index be95a21..4abb467 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,12 @@
+2019-04-10  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * scripttempl/elf.sc (CREATE_PIC): New.  Set for CREATE_SHLIB or
+       CREATE_PIE.
+       (__rel_iplt_start): Don't define for CREATE_PIC.
+       (__rel_iplt_end): Likewise.
+       (__rela_iplt_start): Likewise.
+       (__rela_iplt_end): Likewise.
+
 2019-04-10  Alan Modra  <amodra@gmail.com>
 
        * testsuite/ld-elf/shared.exp: Don't xfail PR ld/20995 for

diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index bd75841..f9f0f7d 100644 (file)
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -109,6 +109,7 @@ else
   FILL=
 fi
 
+test -n "$CREATE_SHLIB$CREATE_PIE" && CREATE_PIC=" "
 test -z "$RODATA_NAME" && RODATA_NAME=rodata
 test -z "$SDATA_NAME" && SDATA_NAME=sdata
 test -z "$SBSS_NAME" && SBSS_NAME=sbss
@@ -160,15 +161,15 @@ REL_IFUNC=".rel.ifunc    ${RELOCATING-0} : { *(.rel.ifunc) }"
 RELA_IFUNC=".rela.ifunc   ${RELOCATING-0} : { *(.rela.ifunc) }"
 REL_IPLT=".rel.iplt     ${RELOCATING-0} :
     {
-      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_start = .);}}
+      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_start = .);}}
       *(.rel.iplt)
-      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_end = .);}}
+      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_end = .);}}
     }"
 RELA_IPLT=".rela.iplt    ${RELOCATING-0} :
     {
-      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_start = .);}}
+      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_start = .);}}
       *(.rela.iplt)
-      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_end = .);}}
+      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_end = .);}}
     }"
 DYNAMIC=".dynamic      ${RELOCATING-0} : { *(.dynamic) }"
 RODATA=".${RODATA_NAME}       ${RELOCATING-0} : { *(.${RODATA_NAME}${RELOCATING+ .${RODATA_NAME}.* .gnu.linkonce.r.*}) }"
@@ -463,16 +464,16 @@ cat >> ldscripts/dyntmp.$$ <<EOF
   .rel.plt      ${RELOCATING-0} :
     {
       *(.rel.plt)
-      ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_start = .);}}}
+      ${IREL_IN_PLT+${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_start = .);}}}
       ${IREL_IN_PLT+${RELOCATING+*(.rel.iplt)}}
-      ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_end = .);}}}
+      ${IREL_IN_PLT+${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_end = .);}}}
     }
   .rela.plt     ${RELOCATING-0} :
     {
       *(.rela.plt)
-      ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_start = .);}}}
+      ${IREL_IN_PLT+${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_start = .);}}}
       ${IREL_IN_PLT+${RELOCATING+*(.rela.iplt)}}
-      ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_end = .);}}}
+      ${IREL_IN_PLT+${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_end = .);}}}
     }
   ${OTHER_PLT_RELOC_SECTIONS}
 EOF