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scripts/trylink: document DATA_SEGMENT_ALIGN() hack

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Denys Vlasenko 2016-04-22 02:00:04 +02:00
parent 7ff24bd5fb
commit 663d1da1e6
1 changed files with 10 additions and 0 deletions
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scripts/trylink
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@ -209,6 +209,16 @@ else
# *(.bss SORT_BY_ALIGNMENT(.bss.*) .gnu.linkonce.b.*)
# This will eliminate most of the padding (~3kb).
# Hmm, "ld --sort-section alignment" should do it too.
#
# There is a ld hack which is meant to decrease disk usage
# at the cost of more RAM usage (??!!) in standard ld script:
# /* Adjust the address for the data segment. We want to adjust up to
# the same address within the page on the next page up. */
# . = ALIGN (0x1000) - ((0x1000 - .) & (0x1000 - 1)); . = DATA_SEGMENT_ALIGN (0x1000, 0x1000);
# Replace it with:
# . = ALIGN (0x1000); . = DATA_SEGMENT_ALIGN (0x1000, 0x1000);
# to unconditionally align .data to the next page boundary,
# instead of "next page, plus current offset in this page"
try $CC $CFLAGS $LDFLAGS \
-o $EXE \
$SORT_COMMON \