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view make/solaris/adlc_updater @ 14397:53fa76359eb1
8016696: PPC64 (part 4): add relocation for trampoline stubs
Summary: A trampoline allows to encode a small branch in the code, even if there is the chance that this branch can not reach all possible code locations. If the relocation finds that a branch is too far for the instruction in the code, it can patch it to jump to the trampoline where is sufficient space for a far branch. Needed on PPC.
Reviewed-by: kvn, bdelsart, jrose
| author | goetz |
|---|---|
| date | Thu, 04 Jul 2013 10:51:31 +0200 |
| parents | a50abfc67f31 |
| children |
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#! /bin/sh # # This file is used by adlc.make to selectively update generated # adlc files. Because source and target diretories are relative # paths, this file is copied to the target build directory before # use. # # adlc-updater <file> <source-dir> <target-dir> # fix_lines() { # repair bare #line directives in $1 to refer to $2 awk < $1 > $1+ ' /^#line 999999$/ {print "#line " (NR+1) " \"" F2 "\""; next} {print} ' F2=$2 mv $1+ $1 } fix_lines $2/$1 $3/$1 [ -f $3/$1 ] && cmp -s $2/$1 $3/$1 || \ ( [ -f $3/$1 ] && echo Updating $3/$1 ; touch $2/made-change ; mv $2/$1 $3/$1 )