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authorMatthew Fortune <matthew.fortune@imgtec.com>2016-04-14 11:49:53 +0100
committerMatthew Fortune <matthew.fortune@imgtec.com>2016-04-18 12:45:46 +0100
commitcdf969539c718acb1f3f031b2c55d5274a538717 (patch)
tree003ffa5726fcc2217dc4aafcdeb1efa46ff88b04 /ld/ldlex.l
parent5947319ef398728052a22575e1d0de0e94e4220f (diff)
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Add new NOCROSSREFS_TO linker script command
NOCROSSREFS_TO is similar to the existing NOCROSSREFS command but only checks one direction of cross referencing. ld/ChangeLog * ld.texinfo: Document NOCROSSREFS_TO script command. * ldlang.h (struct lang_nocrossrefs): Add onlyfirst field. (lang_add_nocrossref_to): New prototype. * ldcref.c (check_local_sym_xref): Use onlyfirst to only look for symbols defined in the first section. (check_nocrossref): Likewise. * ldgram.y (NOCROSSREFS_TO): New script command. * ldlang.c (lang_add_nocrossref): Set onlyfirst to FALSE. (lang_add_nocrossref_to): New function. * ldlex.l (NOCROSSREFS_TO): New token. * NEWS: Mention NOCROSSREFS_TO. * testsuite/ld-scripts/cross4.t: New file. * testsuite/ld-scripts/cross5.t: Likewise. * testsuite/ld-scripts/cross6.t: Likewise. * testsuite/ld-scripts/cross7.t: Likewise. * testsuite/ld-scripts/crossref.exp: Run 4 new NOCROSSREFS_TO tests.
Diffstat (limited to 'ld/ldlex.l')
-rw-r--r--ld/ldlex.l1
1 files changed, 1 insertions, 0 deletions
diff --git a/ld/ldlex.l b/ld/ldlex.l
index d70fad1..2eb8fc1 100644
--- a/ld/ldlex.l
+++ b/ld/ldlex.l
@@ -298,6 +298,7 @@ V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
<BOTH,SCRIPT>"BYTE" { RTOKEN( BYTE);}
<BOTH,SCRIPT>"NOFLOAT" { RTOKEN(NOFLOAT);}
<EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS" { RTOKEN(NOCROSSREFS);}
+<EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS_TO" { RTOKEN(NOCROSSREFS_TO);}
<BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY); }
<BOTH,SCRIPT>"SORT_BY_NAME" { RTOKEN(SORT_BY_NAME); }
<BOTH,SCRIPT>"SORT_BY_ALIGNMENT" { RTOKEN(SORT_BY_ALIGNMENT); }