From: Andrew Burgess Date: Fri, 31 Jul 2015 12:48:22 +0000 (+0100) Subject: objcopy: Improve wildcard matching for symbols with '!' prefix. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0b45135ec1364f9d0c850a52ce05cf4ffb038021;p=binutils-gdb.git objcopy: Improve wildcard matching for symbols with '!' prefix. When using options such as --localize-symbol, --globalize-symbol, etc, along with the --wildcard option, prefixing a symbol name with '!' should provide non-matching behaviour, as example the following example is given in the manual: --wildcard --weaken-symbol !foo --weaken-symbol fo* which should weaken all symbols matching the pattern 'fo*', but not the symbol 'foo'. However, this currently does not work, the current logic will waken all symbols matching the pattern 'fo*' AND all symbols that are not 'foo'. The symbol 'foo' is covered by the first condition, and so is weakened, while, other symbols, for example 'bar' will match the second condition, and so be weakened. This patch adjusts the logic so that a pattern prefixed with '!' specifically DOES NOT apply the relevant change to any matching symbols, instead of applying the change to all non-matching symbols. So this: --weaken-symbol !foo will ensure that the symbol 'foo' is not weakened, but says nothing about symbols that are not 'foo'. As a result, a pattern prefixed with '!' now only makes sense when used alongside a more wide ranging wildcard pattern. This change should make the wildcard matching feature more useful, with no overall loss of functionality. The example given in the manual, weaken all symbols matching 'fo*' except 'foo' can now be achieved, but so too can more complex examples, such as weaken all symbols matching 'fo*' except 'foo', 'foa', and 'fob', like this: --wildcard --weaken-symbol !foo \ --weaken-symbol !foa \ --weaken-symbol !fob \ --weaken-symbol fo* Under the previous scheme, something as symbols as, weaken all symbols except 'foo' could have been achieved with this: --weaken-symbol !foo however, this will no longer work. To achieve the same result under the new scheme this is now required: --weaken-symbol !foo --weaken-symbol * binutils/ChangeLog: * objcopy.c (is_specified_symbol_predicate): Don't stop at first match. Non-match rules set found to FALSE. binutils/testsuite/ChangeLog: * binutils-all/objcopy.exp: Run new symbol tests. (objcopy_test_symbol_manipulation): New function. * binutils-all/symbols-1.d: New file. * binutils-all/symbols-2.d: New file. * binutils-all/symbols-3.d: New file. * binutils-all/symbols-4.d: New file. * binutils-all/symbols.s: New file. --- diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 2e1c211dee7..dde51c2e79a 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,8 @@ +2015-08-07 Andrew Burgess + + * objcopy.c (is_specified_symbol_predicate): Don't stop at first + match. Non-match rules set found to FALSE. + 2015-08-06 Yaakov Selkowitz * configure: Regenerate. diff --git a/binutils/objcopy.c b/binutils/objcopy.c index bb6ca4428d7..7ac8661ba10 100644 --- a/binutils/objcopy.c +++ b/binutils/objcopy.c @@ -985,15 +985,15 @@ is_specified_symbol_predicate (void **slot, void *data) if (! fnmatch (slot_name, d->name, 0)) { d->found = TRUE; - /* Stop traversal. */ - return 0; + /* Continue traversal, there might be a non-match rule. */ + return 1; } } else { - if (fnmatch (slot_name + 1, d->name, 0)) + if (! fnmatch (slot_name + 1, d->name, 0)) { - d->found = TRUE; + d->found = FALSE; /* Stop traversal. */ return 0; } diff --git a/binutils/testsuite/ChangeLog b/binutils/testsuite/ChangeLog index 9255fb901e8..8f8f3c2276f 100644 --- a/binutils/testsuite/ChangeLog +++ b/binutils/testsuite/ChangeLog @@ -1,3 +1,13 @@ +2015-08-07 Andrew Burgess + + * binutils-all/objcopy.exp: Run new symbol tests. + (objcopy_test_symbol_manipulation): New function. + * binutils-all/symbols-1.d: New file. + * binutils-all/symbols-2.d: New file. + * binutils-all/symbols-3.d: New file. + * binutils-all/symbols-4.d: New file. + * binutils-all/symbols.s: New file. + 2015-08-05 Nick Clifton * binutils-all/objcopy.exp (keep_debug_symbols_and_check_links): diff --git a/binutils/testsuite/binutils-all/objcopy.exp b/binutils/testsuite/binutils-all/objcopy.exp index 01d2e17bf23..75514e42ce5 100644 --- a/binutils/testsuite/binutils-all/objcopy.exp +++ b/binutils/testsuite/binutils-all/objcopy.exp @@ -987,6 +987,18 @@ proc objcopy_test_readelf {testname srcfile} { } } +proc objcopy_test_symbol_manipulation {} { + global srcdir + global subdir + + set test_list [lsort [glob -nocomplain $srcdir/$subdir/symbols-*.d]] + foreach t $test_list { + # We need to strip the ".d", but can leave the dirname. + verbose [file rootname $t] + run_dump_test [file rootname $t] + } +} + # ia64 specific tests if { ([istarget "ia64-*-elf*"] || [istarget "ia64-*-linux*"]) } { @@ -995,6 +1007,7 @@ if { ([istarget "ia64-*-elf*"] # ELF specific tests if [is_elf_format] { + objcopy_test_symbol_manipulation objcopy_test "ELF unknown section type" unknown.s objcopy_test_readelf "ELF group" group.s objcopy_test_readelf "ELF group" group-2.s diff --git a/binutils/testsuite/binutils-all/symbols-1.d b/binutils/testsuite/binutils-all/symbols-1.d new file mode 100644 index 00000000000..41314bdc279 --- /dev/null +++ b/binutils/testsuite/binutils-all/symbols-1.d @@ -0,0 +1,14 @@ +#name: localize 'fo*' but not 'foo' +#PROG: objcopy +#objcopy: -w -L !foo -L fo* +#source: symbols.s +#DUMPPROG: nm +#nm: -n + +0+ D bar +0+ d foa +0+ d fob +0+ D foo +0+ d foo1 +0+ d foo2 + diff --git a/binutils/testsuite/binutils-all/symbols-2.d b/binutils/testsuite/binutils-all/symbols-2.d new file mode 100644 index 00000000000..99950aaed5b --- /dev/null +++ b/binutils/testsuite/binutils-all/symbols-2.d @@ -0,0 +1,14 @@ +#name: weaken 'fo*' but not 'foo' +#PROG: objcopy +#objcopy: -w -W !foo -W fo* +#source: symbols.s +#DUMPPROG: nm +#nm: -n + +0+ D bar +0+ W foa +0+ W fob +0+ D foo +0+ W foo1 +0+ W foo2 + diff --git a/binutils/testsuite/binutils-all/symbols-3.d b/binutils/testsuite/binutils-all/symbols-3.d new file mode 100644 index 00000000000..9838e6785a0 --- /dev/null +++ b/binutils/testsuite/binutils-all/symbols-3.d @@ -0,0 +1,14 @@ +#name: weaken 'fo*' but not 'foo', localize foo. +#PROG: objcopy +#objcopy: -w -W !foo -W fo* -L foo +#source: symbols.s +#DUMPPROG: nm +#nm: -n + +0+ D bar +0+ W foa +0+ W fob +0+ d foo +0+ W foo1 +0+ W foo2 + diff --git a/binutils/testsuite/binutils-all/symbols-4.d b/binutils/testsuite/binutils-all/symbols-4.d new file mode 100644 index 00000000000..bb984fdde2f --- /dev/null +++ b/binutils/testsuite/binutils-all/symbols-4.d @@ -0,0 +1,14 @@ +#name: weaken '*' but not 'foo' or 'bar' +#PROG: objcopy +#objcopy: -w -W !foo -W !bar -W * +#source: symbols.s +#DUMPPROG: nm +#nm: -n + +0+ D bar +0+ W foa +0+ W fob +0+ D foo +0+ W foo1 +0+ W foo2 + diff --git a/binutils/testsuite/binutils-all/symbols.s b/binutils/testsuite/binutils-all/symbols.s new file mode 100644 index 00000000000..0d2c62e2f15 --- /dev/null +++ b/binutils/testsuite/binutils-all/symbols.s @@ -0,0 +1,14 @@ + .section ".data", "aw" + .global foo + .global foo1 + .global foo2 + .global foa + .global fob + .global bar +foo: +foo1: +foo2: +foa: +fob: +bar: + .word 0x0