Handle symbols defined/referenced only within IR
The plugin is called to claim symbols in an archive element from plugin_object_p. But those symbols aren't needed to create output. They are defined and referenced only within IR. get_symbols should return resolution based on IR symbol kinds. PR ld/20070 * Makefile.am (noinst_LTLIBRARIES): Add libldtestplug4.la. (libldtestplug4_la_SOURCES): New. (libldtestplug4_la_CFLAGS): Likewise. (libldtestplug4_la_LDFLAGS): Likewise. * Makefile.in: Regenerated. * plugin.c (get_symbols): Return resolution based on IR symbol kinds for symbols defined/referenced only within IR. * testplug4.c: New file. * ld/testsuite/ld-plugin/pr20070.d: Likewise. * ld/testsuite/ld-plugin/pr20070a.c: Likewise. * ld/testsuite/ld-plugin/pr20070b.c: Likewise. * testsuite/ld-plugin/plugin.exp (plugin4_name): New. (plugin4_path): Likewise. Add a test for ld/20070.
This commit is contained in:
H.J. Lu
parent
8ddd5a6cd6
commit
3355cb3b64
18
ld/ChangeLog
18
ld/ChangeLog
@ -1,3 +1,21 @@
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2016-05-12 H.J. Lu <hongjiu.lu@intel.com>
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PR ld/20070
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* Makefile.am (noinst_LTLIBRARIES): Add libldtestplug4.la.
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(libldtestplug4_la_SOURCES): New.
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(libldtestplug4_la_CFLAGS): Likewise.
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(libldtestplug4_la_LDFLAGS): Likewise.
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* Makefile.in: Regenerated.
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* plugin.c (get_symbols): Return resolution based on IR symbol
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kinds for symbols defined/referenced only within IR.
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* testplug4.c: New file.
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* ld/testsuite/ld-plugin/pr20070.d: Likewise.
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* ld/testsuite/ld-plugin/pr20070a.c: Likewise.
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* ld/testsuite/ld-plugin/pr20070b.c: Likewise.
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* testsuite/ld-plugin/plugin.exp (plugin4_name): New.
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(plugin4_path): Likewise.
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Add a test for ld/20070.
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2016-05-11 Alan Modra <amodra@gmail.com>
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* emultempl/hppaelf.em (hppaelf_create_output_section_statements):
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@ -2138,7 +2138,8 @@ bootstrap: ld3$(EXEEXT)
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# Build a dummy plugin using libtool.
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#
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if ENABLE_PLUGINS
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noinst_LTLIBRARIES = libldtestplug.la libldtestplug2.la libldtestplug3.la
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noinst_LTLIBRARIES = libldtestplug.la libldtestplug2.la \
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libldtestplug3.la libldtestplug4.la
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libldtestplug_la_SOURCES = testplug.c
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libldtestplug_la_CFLAGS= -g -O2
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libldtestplug_la_LDFLAGS = -no-undefined -rpath /nowhere
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@ -2148,6 +2149,9 @@ libldtestplug2_la_LDFLAGS = -no-undefined -rpath /nowhere
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libldtestplug3_la_SOURCES = testplug3.c
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libldtestplug3_la_CFLAGS= -g -O2
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libldtestplug3_la_LDFLAGS = -no-undefined -rpath /nowhere
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libldtestplug4_la_SOURCES = testplug4.c
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libldtestplug4_la_CFLAGS= -g -O2
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libldtestplug4_la_LDFLAGS = -no-undefined -rpath /nowhere
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endif
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# DOCUMENTATION TARGETS
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@ -135,6 +135,15 @@ libldtestplug3_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
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$(libldtestplug3_la_CFLAGS) $(CFLAGS) \
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$(libldtestplug3_la_LDFLAGS) $(LDFLAGS) -o $@
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@ENABLE_PLUGINS_TRUE@am_libldtestplug3_la_rpath =
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libldtestplug4_la_LIBADD =
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@ENABLE_PLUGINS_TRUE@am_libldtestplug4_la_OBJECTS = \
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@ENABLE_PLUGINS_TRUE@ libldtestplug4_la-testplug4.lo
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libldtestplug4_la_OBJECTS = $(am_libldtestplug4_la_OBJECTS)
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libldtestplug4_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
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$(LIBTOOLFLAGS) --mode=link $(CCLD) \
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$(libldtestplug4_la_CFLAGS) $(CFLAGS) \
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$(libldtestplug4_la_LDFLAGS) $(LDFLAGS) -o $@
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@ENABLE_PLUGINS_TRUE@am_libldtestplug4_la_rpath =
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am__installdirs = "$(DESTDIR)$(bindir)" "$(DESTDIR)$(infodir)" \
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"$(DESTDIR)$(man1dir)"
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PROGRAMS = $(bin_PROGRAMS)
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@ -170,8 +179,8 @@ YACCCOMPILE = $(YACC) $(AM_YFLAGS) $(YFLAGS)
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LTYACCCOMPILE = $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
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--mode=compile $(YACC) $(AM_YFLAGS) $(YFLAGS)
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SOURCES = $(libldtestplug_la_SOURCES) $(libldtestplug2_la_SOURCES) \
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$(libldtestplug3_la_SOURCES) $(ld_new_SOURCES) \
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$(EXTRA_ld_new_SOURCES)
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$(libldtestplug3_la_SOURCES) $(libldtestplug4_la_SOURCES) \
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$(ld_new_SOURCES) $(EXTRA_ld_new_SOURCES)
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INFO_DEPS = ld.info
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am__TEXINFO_TEX_DIR = $(srcdir)/../texinfo
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DVIS = ld.dvi
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@ -970,7 +979,9 @@ ld_new_LDADD = $(EMULATION_OFILES) $(EMUL_EXTRA_OFILES) $(BFDLIB) $(LIBIBERTY) $
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#
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# Build a dummy plugin using libtool.
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#
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@ENABLE_PLUGINS_TRUE@noinst_LTLIBRARIES = libldtestplug.la libldtestplug2.la libldtestplug3.la
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@ENABLE_PLUGINS_TRUE@noinst_LTLIBRARIES = libldtestplug.la libldtestplug2.la \
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@ENABLE_PLUGINS_TRUE@ libldtestplug3.la libldtestplug4.la
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@ENABLE_PLUGINS_TRUE@libldtestplug_la_SOURCES = testplug.c
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@ENABLE_PLUGINS_TRUE@libldtestplug_la_CFLAGS = -g -O2
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@ENABLE_PLUGINS_TRUE@libldtestplug_la_LDFLAGS = -no-undefined -rpath /nowhere
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@ -980,6 +991,9 @@ ld_new_LDADD = $(EMULATION_OFILES) $(EMUL_EXTRA_OFILES) $(BFDLIB) $(LIBIBERTY) $
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@ENABLE_PLUGINS_TRUE@libldtestplug3_la_SOURCES = testplug3.c
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@ENABLE_PLUGINS_TRUE@libldtestplug3_la_CFLAGS = -g -O2
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@ENABLE_PLUGINS_TRUE@libldtestplug3_la_LDFLAGS = -no-undefined -rpath /nowhere
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@ENABLE_PLUGINS_TRUE@libldtestplug4_la_SOURCES = testplug4.c
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@ENABLE_PLUGINS_TRUE@libldtestplug4_la_CFLAGS = -g -O2
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@ENABLE_PLUGINS_TRUE@libldtestplug4_la_LDFLAGS = -no-undefined -rpath /nowhere
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MAINTAINERCLEANFILES = configdoc.texi ld.1 ld.info
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# We want to reconfigure if configure.host or configure.tgt changes.
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@ -1069,6 +1083,8 @@ libldtestplug2.la: $(libldtestplug2_la_OBJECTS) $(libldtestplug2_la_DEPENDENCIES
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$(libldtestplug2_la_LINK) $(am_libldtestplug2_la_rpath) $(libldtestplug2_la_OBJECTS) $(libldtestplug2_la_LIBADD) $(LIBS)
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libldtestplug3.la: $(libldtestplug3_la_OBJECTS) $(libldtestplug3_la_DEPENDENCIES) $(EXTRA_libldtestplug3_la_DEPENDENCIES)
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$(libldtestplug3_la_LINK) $(am_libldtestplug3_la_rpath) $(libldtestplug3_la_OBJECTS) $(libldtestplug3_la_LIBADD) $(LIBS)
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libldtestplug4.la: $(libldtestplug4_la_OBJECTS) $(libldtestplug4_la_DEPENDENCIES) $(EXTRA_libldtestplug4_la_DEPENDENCIES)
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$(libldtestplug4_la_LINK) $(am_libldtestplug4_la_rpath) $(libldtestplug4_la_OBJECTS) $(libldtestplug4_la_LIBADD) $(LIBS)
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install-binPROGRAMS: $(bin_PROGRAMS)
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@$(NORMAL_INSTALL)
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@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
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@ -1502,6 +1518,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lexsup.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libldtestplug2_la-testplug2.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libldtestplug3_la-testplug3.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libldtestplug4_la-testplug4.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libldtestplug_la-testplug.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mri.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pe-dll.Po@am__quote@
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@ -1550,6 +1567,13 @@ libldtestplug3_la-testplug3.lo: testplug3.c
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@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libldtestplug3_la_CFLAGS) $(CFLAGS) -c -o libldtestplug3_la-testplug3.lo `test -f 'testplug3.c' || echo '$(srcdir)/'`testplug3.c
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libldtestplug4_la-testplug4.lo: testplug4.c
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@am__fastdepCC_TRUE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libldtestplug4_la_CFLAGS) $(CFLAGS) -MT libldtestplug4_la-testplug4.lo -MD -MP -MF $(DEPDIR)/libldtestplug4_la-testplug4.Tpo -c -o libldtestplug4_la-testplug4.lo `test -f 'testplug4.c' || echo '$(srcdir)/'`testplug4.c
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@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/libldtestplug4_la-testplug4.Tpo $(DEPDIR)/libldtestplug4_la-testplug4.Plo
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@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='testplug4.c' object='libldtestplug4_la-testplug4.lo' libtool=yes @AMDEPBACKSLASH@
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@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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@am__fastdepCC_FALSE@ $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libldtestplug4_la_CFLAGS) $(CFLAGS) -c -o libldtestplug4_la-testplug4.lo `test -f 'testplug4.c' || echo '$(srcdir)/'`testplug4.c
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.l.c:
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$(am__skiplex) $(SHELL) $(YLWRAP) $< $(LEX_OUTPUT_ROOT).c $@ -- $(LEXCOMPILE)
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19
ld/plugin.c
19
ld/plugin.c
@ -674,7 +674,24 @@ get_symbols (const void *handle, int nsyms, struct ld_plugin_symbol *syms,
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syms[n].name, FALSE, FALSE, TRUE);
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if (!blhe)
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{
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res = LDPR_UNKNOWN;
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/* The plugin is called to claim symbols in an archive element
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from plugin_object_p. But those symbols aren't needed to
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create output. They are defined and referenced only within
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IR. */
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switch (syms[n].def)
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{
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default:
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abort ();
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case LDPK_UNDEF:
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case LDPK_WEAKUNDEF:
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res = LDPR_UNDEF;
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break;
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case LDPK_DEF:
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case LDPK_WEAKDEF:
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case LDPK_COMMON:
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res = LDPR_PREVAILING_DEF_IRONLY;
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break;
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}
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goto report_symbol;
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}
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674
ld/testplug4.c
Normal file
674
ld/testplug4.c
Normal file
@ -0,0 +1,674 @@
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/* Test plugin for the GNU linker. Check non-object IR file as well as
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get_input_file, get_view, release_input_file and get_symbols interfaces.
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Copyright (C) 2016 Free Software Foundation, Inc.
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This file is part of the GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "plugin-api.h"
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#include "filenames.h"
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/* For ARRAY_SIZE macro only - we don't link the library itself. */
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#include "libiberty.h"
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extern enum ld_plugin_status onload (struct ld_plugin_tv *tv);
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static enum ld_plugin_status onclaim_file (const struct ld_plugin_input_file *file,
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int *claimed);
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static enum ld_plugin_status onall_symbols_read (void);
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static enum ld_plugin_status oncleanup (void);
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/* Helper for calling plugin api message function. */
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#define TV_MESSAGE if (tv_message) (*tv_message)
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/* Struct for recording files to claim / files claimed. */
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typedef struct claim_file
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{
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struct claim_file *next;
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struct ld_plugin_input_file file;
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bfd_boolean claimed;
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struct ld_plugin_symbol *symbols;
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int n_syms_allocated;
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int n_syms_used;
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} claim_file_t;
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/* Types of things that can be added at all symbols read time. */
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typedef enum addfile_enum
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{
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ADD_FILE,
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ADD_LIB,
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ADD_DIR
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} addfile_enum_t;
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/* Struct for recording files to add to final link. */
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typedef struct add_file
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{
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struct add_file *next;
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const char *name;
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addfile_enum_t type;
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} add_file_t;
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/* Helper macro for defining array of transfer vector tags and names. */
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#define ADDENTRY(tag) { tag, #tag }
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/* Struct for looking up human-readable versions of tag names. */
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typedef struct tag_name
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{
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enum ld_plugin_tag tag;
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const char *name;
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} tag_name_t;
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/* Array of all known tags and their names. */
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static const tag_name_t tag_names[] =
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||||
{
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||||
ADDENTRY(LDPT_NULL),
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ADDENTRY(LDPT_API_VERSION),
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ADDENTRY(LDPT_GOLD_VERSION),
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ADDENTRY(LDPT_LINKER_OUTPUT),
|
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ADDENTRY(LDPT_OPTION),
|
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ADDENTRY(LDPT_REGISTER_CLAIM_FILE_HOOK),
|
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ADDENTRY(LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK),
|
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ADDENTRY(LDPT_REGISTER_CLEANUP_HOOK),
|
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ADDENTRY(LDPT_ADD_SYMBOLS),
|
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ADDENTRY(LDPT_GET_SYMBOLS),
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ADDENTRY(LDPT_GET_SYMBOLS_V2),
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ADDENTRY(LDPT_ADD_INPUT_FILE),
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ADDENTRY(LDPT_MESSAGE),
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ADDENTRY(LDPT_GET_INPUT_FILE),
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ADDENTRY(LDPT_GET_VIEW),
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ADDENTRY(LDPT_RELEASE_INPUT_FILE),
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ADDENTRY(LDPT_ADD_INPUT_LIBRARY),
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ADDENTRY(LDPT_OUTPUT_NAME),
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ADDENTRY(LDPT_SET_EXTRA_LIBRARY_PATH),
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ADDENTRY(LDPT_GNU_LD_VERSION)
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};
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/* Function pointers to cache hooks passed at onload time. */
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static ld_plugin_register_claim_file tv_register_claim_file = 0;
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static ld_plugin_register_all_symbols_read tv_register_all_symbols_read = 0;
|
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static ld_plugin_register_cleanup tv_register_cleanup = 0;
|
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static ld_plugin_add_symbols tv_add_symbols = 0;
|
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static ld_plugin_get_symbols tv_get_symbols = 0;
|
||||
static ld_plugin_get_symbols tv_get_symbols_v2 = 0;
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static ld_plugin_add_input_file tv_add_input_file = 0;
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static ld_plugin_message tv_message = 0;
|
||||
static ld_plugin_get_input_file tv_get_input_file = 0;
|
||||
static ld_plugin_get_view tv_get_view = 0;
|
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static ld_plugin_release_input_file tv_release_input_file = 0;
|
||||
static ld_plugin_add_input_library tv_add_input_library = 0;
|
||||
static ld_plugin_set_extra_library_path tv_set_extra_library_path = 0;
|
||||
|
||||
/* Other cached info from the transfer vector. */
|
||||
static enum ld_plugin_output_file_type linker_output;
|
||||
static const char *output_name;
|
||||
|
||||
/* Behaviour control flags set by plugin options. */
|
||||
static enum ld_plugin_status onload_ret = LDPS_OK;
|
||||
static enum ld_plugin_status claim_file_ret = LDPS_OK;
|
||||
static enum ld_plugin_status all_symbols_read_ret = LDPS_OK;
|
||||
static enum ld_plugin_status cleanup_ret = LDPS_OK;
|
||||
static bfd_boolean register_claimfile_hook = TRUE;
|
||||
static bfd_boolean register_allsymbolsread_hook = FALSE;
|
||||
static bfd_boolean register_cleanup_hook = FALSE;
|
||||
static bfd_boolean dumpresolutions = FALSE;
|
||||
static bfd_boolean allsymbolsread_silent = FALSE;
|
||||
|
||||
/* The master list of all claimable/claimed files. */
|
||||
static claim_file_t *claimfiles_list = NULL;
|
||||
|
||||
/* We keep a tail pointer for easy linking on the end. */
|
||||
static claim_file_t **claimfiles_tail_chain_ptr = &claimfiles_list;
|
||||
|
||||
/* The last claimed file added to the list, for receiving syms. */
|
||||
static claim_file_t *last_claimfile = NULL;
|
||||
|
||||
/* The master list of all files to add to the final link. */
|
||||
static add_file_t *addfiles_list = NULL;
|
||||
|
||||
/* We keep a tail pointer for easy linking on the end. */
|
||||
static add_file_t **addfiles_tail_chain_ptr = &addfiles_list;
|
||||
|
||||
/* Add a new claimfile on the end of the chain. */
|
||||
static enum ld_plugin_status
|
||||
record_claim_file (const char *file, off_t filesize)
|
||||
{
|
||||
claim_file_t *newfile;
|
||||
|
||||
newfile = malloc (sizeof *newfile);
|
||||
if (!newfile)
|
||||
return LDPS_ERR;
|
||||
memset (newfile, 0, sizeof *newfile);
|
||||
/* Only setup for now is remembering the name to look for. */
|
||||
newfile->file.name = file;
|
||||
newfile->file.filesize = filesize;
|
||||
/* Chain it on the end of the list. */
|
||||
*claimfiles_tail_chain_ptr = newfile;
|
||||
claimfiles_tail_chain_ptr = &newfile->next;
|
||||
/* Record it as active for receiving symbols to register. */
|
||||
last_claimfile = newfile;
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Add a new addfile on the end of the chain. */
|
||||
static enum ld_plugin_status
|
||||
record_add_file (const char *file, addfile_enum_t type)
|
||||
{
|
||||
add_file_t *newfile;
|
||||
|
||||
newfile = malloc (sizeof *newfile);
|
||||
if (!newfile)
|
||||
return LDPS_ERR;
|
||||
newfile->next = NULL;
|
||||
newfile->name = file;
|
||||
newfile->type = type;
|
||||
/* Chain it on the end of the list. */
|
||||
*addfiles_tail_chain_ptr = newfile;
|
||||
addfiles_tail_chain_ptr = &newfile->next;
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Parse a command-line argument string into a symbol definition.
|
||||
Symbol-strings follow the colon-separated format:
|
||||
NAME:VERSION:def:vis:size:COMDATKEY
|
||||
where the fields in capitals are strings and those in lower
|
||||
case are integers. We don't allow to specify a resolution as
|
||||
doing so is not meaningful when calling the add symbols hook. */
|
||||
static enum ld_plugin_status
|
||||
parse_symdefstr (const char *str, struct ld_plugin_symbol *sym)
|
||||
{
|
||||
int n;
|
||||
long long size;
|
||||
const char *colon1, *colon2, *colon5;
|
||||
|
||||
/* Locate the colons separating the first two strings. */
|
||||
colon1 = strchr (str, ':');
|
||||
if (!colon1)
|
||||
return LDPS_ERR;
|
||||
colon2 = strchr (colon1+1, ':');
|
||||
if (!colon2)
|
||||
return LDPS_ERR;
|
||||
/* Name must not be empty (version may be). */
|
||||
if (colon1 == str)
|
||||
return LDPS_ERR;
|
||||
|
||||
/* The fifth colon and trailing comdat key string are optional,
|
||||
but the intermediate ones must all be present. */
|
||||
colon5 = strchr (colon2+1, ':'); /* Actually only third so far. */
|
||||
if (!colon5)
|
||||
return LDPS_ERR;
|
||||
colon5 = strchr (colon5+1, ':'); /* Hopefully fourth now. */
|
||||
if (!colon5)
|
||||
return LDPS_ERR;
|
||||
colon5 = strchr (colon5+1, ':'); /* Optional fifth now. */
|
||||
|
||||
/* Finally we'll use sscanf to parse the numeric fields, then
|
||||
we'll split out the strings which we need to allocate separate
|
||||
storage for anyway so that we can add nul termination. */
|
||||
n = sscanf (colon2 + 1, "%i:%i:%lli", &sym->def, &sym->visibility, &size);
|
||||
if (n != 3)
|
||||
return LDPS_ERR;
|
||||
|
||||
/* Parsed successfully, so allocate strings and fill out fields. */
|
||||
sym->size = size;
|
||||
sym->resolution = LDPR_UNKNOWN;
|
||||
sym->name = malloc (colon1 - str + 1);
|
||||
if (!sym->name)
|
||||
return LDPS_ERR;
|
||||
memcpy (sym->name, str, colon1 - str);
|
||||
sym->name[colon1 - str] = '\0';
|
||||
if (colon2 > (colon1 + 1))
|
||||
{
|
||||
sym->version = malloc (colon2 - colon1);
|
||||
if (!sym->version)
|
||||
return LDPS_ERR;
|
||||
memcpy (sym->version, colon1 + 1, colon2 - (colon1 + 1));
|
||||
sym->version[colon2 - (colon1 + 1)] = '\0';
|
||||
}
|
||||
else
|
||||
sym->version = NULL;
|
||||
if (colon5 && colon5[1])
|
||||
{
|
||||
sym->comdat_key = malloc (strlen (colon5 + 1) + 1);
|
||||
if (!sym->comdat_key)
|
||||
return LDPS_ERR;
|
||||
strcpy (sym->comdat_key, colon5 + 1);
|
||||
}
|
||||
else
|
||||
sym->comdat_key = 0;
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Record a symbol to be added for the last-added claimfile. */
|
||||
static enum ld_plugin_status
|
||||
record_claimed_file_symbol (const char *symdefstr)
|
||||
{
|
||||
struct ld_plugin_symbol sym;
|
||||
|
||||
/* Can't add symbols except as belonging to claimed files. */
|
||||
if (!last_claimfile)
|
||||
return LDPS_ERR;
|
||||
|
||||
/* If string doesn't parse correctly, give an error. */
|
||||
if (parse_symdefstr (symdefstr, &sym) != LDPS_OK)
|
||||
return LDPS_ERR;
|
||||
|
||||
/* Check for enough space, resize array if needed, and add it. */
|
||||
if (last_claimfile->n_syms_allocated == last_claimfile->n_syms_used)
|
||||
{
|
||||
int new_n_syms = last_claimfile->n_syms_allocated
|
||||
? 2 * last_claimfile->n_syms_allocated
|
||||
: 10;
|
||||
last_claimfile->symbols = realloc (last_claimfile->symbols,
|
||||
new_n_syms * sizeof *last_claimfile->symbols);
|
||||
if (!last_claimfile->symbols)
|
||||
return LDPS_ERR;
|
||||
last_claimfile->n_syms_allocated = new_n_syms;
|
||||
}
|
||||
last_claimfile->symbols[last_claimfile->n_syms_used++] = sym;
|
||||
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Records the status to return from one of the registered hooks. */
|
||||
static enum ld_plugin_status
|
||||
set_ret_val (const char *whichval, enum ld_plugin_status retval)
|
||||
{
|
||||
if (!strcmp ("onload", whichval))
|
||||
onload_ret = retval;
|
||||
else if (!strcmp ("claimfile", whichval))
|
||||
claim_file_ret = retval;
|
||||
else if (!strcmp ("allsymbolsread", whichval))
|
||||
all_symbols_read_ret = retval;
|
||||
else if (!strcmp ("cleanup", whichval))
|
||||
cleanup_ret = retval;
|
||||
else
|
||||
return LDPS_ERR;
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Records hooks which should be registered. */
|
||||
static enum ld_plugin_status
|
||||
set_register_hook (const char *whichhook, bfd_boolean yesno)
|
||||
{
|
||||
if (!strcmp ("claimfile", whichhook))
|
||||
register_claimfile_hook = yesno;
|
||||
else if (!strcmp ("allsymbolsread", whichhook))
|
||||
register_allsymbolsread_hook = yesno;
|
||||
else if (!strcmp ("allsymbolsreadsilent", whichhook))
|
||||
{
|
||||
register_allsymbolsread_hook = yesno;
|
||||
allsymbolsread_silent = TRUE;
|
||||
}
|
||||
else if (!strcmp ("cleanup", whichhook))
|
||||
register_cleanup_hook = yesno;
|
||||
else
|
||||
return LDPS_ERR;
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Determine type of plugin option and pass to individual parsers. */
|
||||
static enum ld_plugin_status
|
||||
parse_option (const char *opt)
|
||||
{
|
||||
if (!strncmp ("fatal", opt, 5))
|
||||
{
|
||||
TV_MESSAGE (LDPL_FATAL, "Fatal error");
|
||||
fflush (NULL);
|
||||
}
|
||||
else if (!strncmp ("error", opt, 5))
|
||||
{
|
||||
TV_MESSAGE (LDPL_ERROR, "Error");
|
||||
fflush (NULL);
|
||||
}
|
||||
else if (!strncmp ("warning", opt, 7))
|
||||
{
|
||||
TV_MESSAGE (LDPL_WARNING, "Warning");
|
||||
fflush (NULL);
|
||||
}
|
||||
else if (!strncmp ("fail", opt, 4))
|
||||
return set_ret_val (opt + 4, LDPS_ERR);
|
||||
else if (!strncmp ("pass", opt, 4))
|
||||
return set_ret_val (opt + 4, LDPS_OK);
|
||||
else if (!strncmp ("register", opt, 8))
|
||||
return set_register_hook (opt + 8, TRUE);
|
||||
else if (!strncmp ("noregister", opt, 10))
|
||||
return set_register_hook (opt + 10, FALSE);
|
||||
else if (!strncmp ("claim:", opt, 6))
|
||||
return record_claim_file (opt + 6, 0);
|
||||
else if (!strncmp ("sym:", opt, 4))
|
||||
return record_claimed_file_symbol (opt + 4);
|
||||
else if (!strncmp ("add:", opt, 4))
|
||||
return record_add_file (opt + 4, ADD_FILE);
|
||||
else if (!strncmp ("lib:", opt, 4))
|
||||
return record_add_file (opt + 4, ADD_LIB);
|
||||
else if (!strncmp ("dir:", opt, 4))
|
||||
return record_add_file (opt + 4, ADD_DIR);
|
||||
else if (!strcmp ("dumpresolutions", opt))
|
||||
dumpresolutions = TRUE;
|
||||
else
|
||||
return LDPS_ERR;
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Handle/record information received in a transfer vector entry. */
|
||||
static enum ld_plugin_status
|
||||
parse_tv_tag (struct ld_plugin_tv *tv)
|
||||
{
|
||||
#define SETVAR(x) x = tv->tv_u.x
|
||||
switch (tv->tv_tag)
|
||||
{
|
||||
case LDPT_OPTION:
|
||||
return parse_option (tv->tv_u.tv_string);
|
||||
case LDPT_NULL:
|
||||
case LDPT_GOLD_VERSION:
|
||||
case LDPT_GNU_LD_VERSION:
|
||||
case LDPT_API_VERSION:
|
||||
default:
|
||||
break;
|
||||
case LDPT_OUTPUT_NAME:
|
||||
output_name = tv->tv_u.tv_string;
|
||||
break;
|
||||
case LDPT_LINKER_OUTPUT:
|
||||
linker_output = tv->tv_u.tv_val;
|
||||
break;
|
||||
case LDPT_REGISTER_CLAIM_FILE_HOOK:
|
||||
SETVAR(tv_register_claim_file);
|
||||
break;
|
||||
case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
|
||||
SETVAR(tv_register_all_symbols_read);
|
||||
break;
|
||||
case LDPT_REGISTER_CLEANUP_HOOK:
|
||||
SETVAR(tv_register_cleanup);
|
||||
break;
|
||||
case LDPT_ADD_SYMBOLS:
|
||||
SETVAR(tv_add_symbols);
|
||||
break;
|
||||
case LDPT_GET_SYMBOLS:
|
||||
SETVAR(tv_get_symbols);
|
||||
break;
|
||||
case LDPT_GET_SYMBOLS_V2:
|
||||
tv_get_symbols_v2 = tv->tv_u.tv_get_symbols;
|
||||
break;
|
||||
case LDPT_ADD_INPUT_FILE:
|
||||
SETVAR(tv_add_input_file);
|
||||
break;
|
||||
case LDPT_MESSAGE:
|
||||
SETVAR(tv_message);
|
||||
break;
|
||||
case LDPT_GET_INPUT_FILE:
|
||||
SETVAR(tv_get_input_file);
|
||||
break;
|
||||
case LDPT_GET_VIEW:
|
||||
SETVAR(tv_get_view);
|
||||
break;
|
||||
case LDPT_RELEASE_INPUT_FILE:
|
||||
SETVAR(tv_release_input_file);
|
||||
break;
|
||||
case LDPT_ADD_INPUT_LIBRARY:
|
||||
SETVAR(tv_add_input_library);
|
||||
break;
|
||||
case LDPT_SET_EXTRA_LIBRARY_PATH:
|
||||
SETVAR(tv_set_extra_library_path);
|
||||
break;
|
||||
}
|
||||
#undef SETVAR
|
||||
return LDPS_OK;
|
||||
}
|
||||
|
||||
/* Standard plugin API entry point. */
|
||||
enum ld_plugin_status
|
||||
onload (struct ld_plugin_tv *tv)
|
||||
{
|
||||
enum ld_plugin_status rv;
|
||||
|
||||
/* This plugin does nothing but dump the tv array. It would
|
||||
be an error if this function was called without one. */
|
||||
if (!tv)
|
||||
return LDPS_ERR;
|
||||
|
||||
/* First entry should always be LDPT_MESSAGE, letting us get
|
||||
hold of it easily so we can send output straight away. */
|
||||
if (tv[0].tv_tag == LDPT_MESSAGE)
|
||||
tv_message = tv[0].tv_u.tv_message;
|
||||
|
||||
do
|
||||
if ((rv = parse_tv_tag (tv)) != LDPS_OK)
|
||||
return rv;
|
||||
while ((tv++)->tv_tag != LDPT_NULL);
|
||||
|
||||
/* Register hooks only if instructed by options. */
|
||||
if (register_claimfile_hook)
|
||||
{
|
||||
if (!tv_register_claim_file)
|
||||
{
|
||||
TV_MESSAGE (LDPL_FATAL, "No register_claim_file hook");
|
||||
fflush (NULL);
|
||||
return LDPS_ERR;
|
||||
}
|
||||
(*tv_register_claim_file) (onclaim_file);
|
||||
}
|
||||
if (register_allsymbolsread_hook)
|
||||
{
|
||||
if (!tv_register_all_symbols_read)
|
||||
{
|
||||
TV_MESSAGE (LDPL_FATAL, "No register_all_symbols_read hook");
|
||||
fflush (NULL);
|
||||
return LDPS_ERR;
|
||||
}
|
||||
(*tv_register_all_symbols_read) (onall_symbols_read);
|
||||
}
|
||||
if (register_cleanup_hook)
|
||||
{
|
||||
if (!tv_register_cleanup)
|
||||
{
|
||||
TV_MESSAGE (LDPL_FATAL, "No register_cleanup hook");
|
||||
fflush (NULL);
|
||||
return LDPS_ERR;
|
||||
}
|
||||
(*tv_register_cleanup) (oncleanup);
|
||||
}
|
||||
|
||||
/* Claim testsuite/ld-plugin/pr20070b.c, standalone or in a library.
|
||||
Its size must be SIZE_OF_PR20070B_C bytes. */
|
||||
#define SIZE_OF_PR20070B_C 248
|
||||
if (onload_ret == LDPS_OK
|
||||
&& (record_claim_file ("pr20070b.c", SIZE_OF_PR20070B_C) != LDPS_OK
|
||||
|| record_claimed_file_symbol ("def::0:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("weakdef::1:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("undef::2:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("weakundef::3:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("common::4:0:0") != LDPS_OK
|
||||
|| record_claim_file ("libpr20070.a", SIZE_OF_PR20070B_C) != LDPS_OK
|
||||
|| record_claimed_file_symbol ("def::0:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("weakdef::1:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("undef::2:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("weakundef::3:0:0") != LDPS_OK
|
||||
|| record_claimed_file_symbol ("common::4:0:0") != LDPS_OK))
|
||||
onload_ret = LDPS_ERR;
|
||||
|
||||
return onload_ret;
|
||||
}
|
||||
|
||||
char *
|
||||
xstrdup (const char *s)
|
||||
{
|
||||
size_t len = strlen (s) + 1;
|
||||
char *ret = malloc (len + 1);
|
||||
return (char *) memcpy (ret, s, len);
|
||||
}
|
||||
|
||||
/* Standard plugin API registerable hook. */
|
||||
static enum ld_plugin_status
|
||||
onclaim_file (const struct ld_plugin_input_file *file, int *claimed)
|
||||
{
|
||||
/* Let's see if we want to claim this file. */
|
||||
claim_file_t *claimfile = claimfiles_list;
|
||||
size_t len = strlen (file->name);
|
||||
char *name = xstrdup (file->name);
|
||||
char *p = name + len;
|
||||
bfd_boolean islib;
|
||||
|
||||
/* Only match the file name without the directory part. */
|
||||
islib = *p == 'a' && *(p - 1) == '.';
|
||||
for (; p != name; p--)
|
||||
if (IS_DIR_SEPARATOR (*p))
|
||||
{
|
||||
p++;
|
||||
break;
|
||||
}
|
||||
|
||||
while (claimfile)
|
||||
{
|
||||
/* Claim the file only if the file name and size match and don't
|
||||
match the whole library. */
|
||||
if (!strcmp (p, claimfile->file.name)
|
||||
&& claimfile->file.filesize == file->filesize
|
||||
&& (!islib || file->offset != 0))
|
||||
break;
|
||||
claimfile = claimfile->next;
|
||||
}
|
||||
|
||||
free (name);
|
||||
|
||||
/* If we decided to claim it, record that fact, and add any symbols
|
||||
that were defined for it by plugin options. */
|
||||
*claimed = (claimfile != 0);
|
||||
if (claimfile)
|
||||
{
|
||||
claimfile->claimed = TRUE;
|
||||
claimfile->file = *file;
|
||||
if (claimfile->n_syms_used && !tv_add_symbols)
|
||||
return LDPS_ERR;
|
||||
else if (claimfile->n_syms_used)
|
||||
return (*tv_add_symbols) (claimfile->file.handle,
|
||||
claimfile->n_syms_used, claimfile->symbols);
|
||||
}
|
||||
|
||||
return claim_file_ret;
|
||||
}
|
||||
|
||||
/* Standard plugin API registerable hook. */
|
||||
static enum ld_plugin_status
|
||||
onall_symbols_read (void)
|
||||
{
|
||||
static const char *resolutions[] =
|
||||
{
|
||||
"LDPR_UNKNOWN",
|
||||
"LDPR_UNDEF",
|
||||
"LDPR_PREVAILING_DEF",
|
||||
"LDPR_PREVAILING_DEF_IRONLY",
|
||||
"LDPR_PREEMPTED_REG",
|
||||
"LDPR_PREEMPTED_IR",
|
||||
"LDPR_RESOLVED_IR",
|
||||
"LDPR_RESOLVED_EXEC",
|
||||
"LDPR_RESOLVED_DYN",
|
||||
"LDPR_PREVAILING_DEF_IRONLY_EXP",
|
||||
};
|
||||
claim_file_t *claimfile = dumpresolutions ? claimfiles_list : NULL;
|
||||
add_file_t *addfile = addfiles_list;
|
||||
struct ld_plugin_input_file file;
|
||||
const void *view;
|
||||
char buffer[30];
|
||||
int fd;
|
||||
char *filename;
|
||||
if (! allsymbolsread_silent)
|
||||
TV_MESSAGE (LDPL_INFO, "hook called: all symbols read.");
|
||||
for ( ; claimfile; claimfile = claimfile->next)
|
||||
{
|
||||
enum ld_plugin_status rv;
|
||||
int n;
|
||||
if (claimfile->n_syms_used && !tv_get_symbols_v2)
|
||||
return LDPS_ERR;
|
||||
else if (!claimfile->n_syms_used)
|
||||
continue;
|
||||
else if (!claimfile->file.handle)
|
||||
continue;
|
||||
rv = tv_get_input_file (claimfile->file.handle, &file);
|
||||
if (rv != LDPS_OK)
|
||||
return rv;
|
||||
TV_MESSAGE (LDPL_INFO, "Input: %s (%s)", file.name,
|
||||
claimfile->file.name);
|
||||
rv = tv_get_view (claimfile->file.handle, &view);
|
||||
if (rv != LDPS_OK)
|
||||
return rv;
|
||||
#define EXPECTED_VIEW "/* The first line of this file must match the expectation of"
|
||||
#define EXPECTED_VIEW_LENGTH (sizeof (EXPECTED_VIEW) - 1)
|
||||
if (file.filesize != SIZE_OF_PR20070B_C
|
||||
|| SIZE_OF_PR20070B_C < sizeof EXPECTED_VIEW_LENGTH
|
||||
|| memcmp (view, EXPECTED_VIEW, EXPECTED_VIEW_LENGTH) != 0)
|
||||
{
|
||||
char result[EXPECTED_VIEW_LENGTH + 1];
|
||||
memcpy (result, view, sizeof (result));
|
||||
result[EXPECTED_VIEW_LENGTH] = '\0';
|
||||
TV_MESSAGE (LDPL_INFO, "Incorrect view:");
|
||||
TV_MESSAGE (LDPL_INFO, " Expect: " EXPECTED_VIEW);
|
||||
TV_MESSAGE (LDPL_INFO, " Result: %s", result);
|
||||
}
|
||||
rv = tv_get_symbols_v2 (claimfile->file.handle, claimfile->n_syms_used,
|
||||
claimfile->symbols);
|
||||
if (rv != LDPS_OK)
|
||||
return rv;
|
||||
for (n = 0; n < claimfile->n_syms_used; n++)
|
||||
TV_MESSAGE (LDPL_INFO, "Sym: '%s%s%s' Resolution: %s",
|
||||
claimfile->symbols[n].name,
|
||||
claimfile->symbols[n].version ? "@" : "",
|
||||
(claimfile->symbols[n].version
|
||||
? claimfile->symbols[n].version : ""),
|
||||
resolutions[claimfile->symbols[n].resolution]);
|
||||
fd = claimfile->file.fd;
|
||||
filename = xstrdup (claimfile->file.name);
|
||||
rv = tv_release_input_file (claimfile->file.handle);
|
||||
if (rv != LDPS_OK)
|
||||
{
|
||||
free (filename);
|
||||
return rv;
|
||||
}
|
||||
if (read (fd, buffer, sizeof (buffer)) >= 0)
|
||||
{
|
||||
TV_MESSAGE (LDPL_FATAL, "Unreleased file descriptor on: %s",
|
||||
claimfile->file.name);
|
||||
free (filename);
|
||||
return LDPS_ERR;
|
||||
}
|
||||
free (filename);
|
||||
}
|
||||
for ( ; addfile ; addfile = addfile->next)
|
||||
{
|
||||
enum ld_plugin_status rv;
|
||||
if (addfile->type == ADD_LIB && tv_add_input_library)
|
||||
rv = (*tv_add_input_library) (addfile->name);
|
||||
else if (addfile->type == ADD_FILE && tv_add_input_file)
|
||||
rv = (*tv_add_input_file) (addfile->name);
|
||||
else if (addfile->type == ADD_DIR && tv_set_extra_library_path)
|
||||
rv = (*tv_set_extra_library_path) (addfile->name);
|
||||
else
|
||||
rv = LDPS_ERR;
|
||||
if (rv != LDPS_OK)
|
||||
return rv;
|
||||
}
|
||||
fflush (NULL);
|
||||
return all_symbols_read_ret;
|
||||
}
|
||||
|
||||
/* Standard plugin API registerable hook. */
|
||||
static enum ld_plugin_status
|
||||
oncleanup (void)
|
||||
{
|
||||
TV_MESSAGE (LDPL_INFO, "hook called: cleanup.");
|
||||
fflush (NULL);
|
||||
return cleanup_ret;
|
||||
}
|
||||
@ -55,6 +55,10 @@ set plugin3_name [file_contents "$base_dir/libldtestplug3.la"]
|
||||
set plugin3_name [regsub "'.*" [regsub ".*dlname='" "$plugin3_name" ""] ""]
|
||||
verbose "plugin3 name is '$plugin3_name'"
|
||||
|
||||
set plugin4_name [file_contents "$base_dir/libldtestplug4.la"]
|
||||
set plugin4_name [regsub "'.*" [regsub ".*dlname='" "$plugin4_name" ""] ""]
|
||||
verbose "plugin4 name is '$plugin4_name'"
|
||||
|
||||
# Use libtool to find full path to plugin rather than worrying
|
||||
# about run paths or anything like that.
|
||||
catch "exec $base_dir/libtool --config" lt_config
|
||||
@ -66,9 +70,11 @@ set lt_objdir [regsub "objdir=" "$lt_objdir" ""]
|
||||
set plugin_path "$base_dir/$lt_objdir/$plugin_name"
|
||||
set plugin2_path "$base_dir/$lt_objdir/$plugin2_name"
|
||||
set plugin3_path "$base_dir/$lt_objdir/$plugin3_name"
|
||||
set plugin4_path "$base_dir/$lt_objdir/$plugin4_name"
|
||||
verbose "Full plugin path $plugin_path" 2
|
||||
verbose "Full plugin2 path $plugin2_path" 2
|
||||
verbose "Full plugin3 path $plugin3_path" 2
|
||||
verbose "Full plugin4 path $plugin4_path" 2
|
||||
|
||||
set regclm "-plugin-opt registerclaimfile"
|
||||
set regas "-plugin-opt registerallsymbolsread"
|
||||
@ -93,6 +99,7 @@ if { $can_compile && \
|
||||
(![ld_compile "$CC $CFLAGS" $srcdir/$subdir/main.c tmpdir/main.o] \
|
||||
|| ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/func.c tmpdir/func.o] \
|
||||
|| ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/text.c tmpdir/text.o] \
|
||||
|| ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/pr20070a.c tmpdir/pr20070a.o] \
|
||||
|| ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/dummy.s tmpdir/dummy.o] \
|
||||
|| ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/pr17973.s tmpdir/pr17973.o]) } {
|
||||
# Defer fail until we have list of tests set.
|
||||
@ -351,3 +358,22 @@ if [ar_simple_create $ar "--plugin $plugin2_path" "tmpdir/libfunc.a" \
|
||||
unresolved [lindex $testitem 0]
|
||||
}
|
||||
}
|
||||
|
||||
file delete tmpdir/libpr20070.a
|
||||
if [ar_simple_create $ar "--plugin $plugin4_path" "tmpdir/libpr20070.a" \
|
||||
"$srcdir/$subdir/pr20070b.c"] {
|
||||
run_ld_link_tests [list \
|
||||
[list \
|
||||
"PR ld/20070" \
|
||||
"-Bstatic -plugin $plugin4_path $regclm \
|
||||
$regas $regcln \
|
||||
-plugin-opt claim:$srcdir/$subdir/pr20070b.c \
|
||||
-plugin-opt claim:tmpdir/libpr20070.a \
|
||||
-plugin-opt dumpresolutions \
|
||||
tmpdir/pr20070a.o tmpdir/text.o tmpdir/libpr20070.a $libs" \
|
||||
"" "" "" {{ld pr20070.d}} "pr20070.x" \
|
||||
] \
|
||||
]
|
||||
} else {
|
||||
unresolved "PR ld/20070"
|
||||
}
|
||||
|
||||
9
ld/testsuite/ld-plugin/pr20070.d
Normal file
9
ld/testsuite/ld-plugin/pr20070.d
Normal file
@ -0,0 +1,9 @@
|
||||
hook called: all symbols read.
|
||||
Input: pr20070b.c \(tmpdir/libpr20070.a\)
|
||||
Sym: 'def' Resolution: LDPR_PREVAILING_DEF_IRONLY
|
||||
Sym: 'weakdef' Resolution: LDPR_PREVAILING_DEF_IRONLY
|
||||
Sym: 'undef' Resolution: LDPR_UNDEF
|
||||
Sym: 'weakundef' Resolution: LDPR_UNDEF
|
||||
Sym: 'common' Resolution: LDPR_PREVAILING_DEF_IRONLY
|
||||
hook called: cleanup.
|
||||
#...
|
||||
9
ld/testsuite/ld-plugin/pr20070a.c
Normal file
9
ld/testsuite/ld-plugin/pr20070a.c
Normal file
@ -0,0 +1,9 @@
|
||||
extern int printf (const char *fmt, ...);
|
||||
|
||||
extern const char *text;
|
||||
|
||||
int main (int argc, const char **argv)
|
||||
{
|
||||
printf ("%s\n", text);
|
||||
return 0;
|
||||
}
|
||||
10
ld/testsuite/ld-plugin/pr20070b.c
Normal file
10
ld/testsuite/ld-plugin/pr20070b.c
Normal file
@ -0,0 +1,10 @@
|
||||
/* The first line of this file must match the expectation of
|
||||
onall_symbols_read in testplug4.c and the size of this file
|
||||
must match the expectation of onclaim_file in testplug4.c. */
|
||||
|
||||
extern int retval;
|
||||
|
||||
int func (void)
|
||||
{
|
||||
return retval;
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user