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* ld.texinfo (Options): Describe -Trodata-segment.
	* ldlex.h (enum option_values): Add OPTION_TRODATA_SEGMENT.
	* lexsup.c (ld_options, parse_args): Handle -Trodata-segment.
	* scripttempl/elf.sc (RODATA_ADDR, SHLIB_RODATA_ADDR): Wrap
	SEGMENT_START("rodata-segment", ...) + SIZEOF_HEADERS around the value.
This commit is contained in:
Roland McGrath
2012-12-18 20:42:43 +00:00
parent d8a4f9280a
commit 9d5777a34c
5 changed files with 59 additions and 24 deletions
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24
ld/scripttempl/elf.sc
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@@ -492,12 +492,26 @@ cat <<EOF
EOF
if test -n "${SEPARATE_CODE}"; then
if test -n "${RODATA_ADDR}"; then
RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR}) + SIZEOF_HEADERS"
else
RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))}"
RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR})"
fi
if test -n "${SHLIB_RODATA_ADDR}"; then
SHLIB_RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
else
SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
fi
cat <<EOF
/* Adjust the address for the rodata segment. We want to adjust up to
the same address within the page on the next page up. */
${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${RODATA_ADDR-ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))};}}}
${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_RODATA_ADDR-ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))};}}
${CREATE_PIE+${RELOCATING+. = ${SHLIB_RODATA_ADDR-ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))};}}
${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${RODATA_ADDR};}}}
${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_RODATA_ADDR};}}
${CREATE_PIE+${RELOCATING+. = ${SHLIB_RODATA_ADDR};}}
EOF
emit_early_ro
emit_dyn
@@ -650,8 +664,8 @@ cat <<EOF
.debug_ranges 0 : { *(.debug_ranges) }
/* DWARF Extension. */
.debug_macro 0 : { *(.debug_macro) }
.debug_macro 0 : { *(.debug_macro) }
${TINY_DATA_SECTION}
${TINY_BSS_SECTION}