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authorMartin Liska <mliska@suse.cz>2022-01-14 16:56:44 +0100
committerMartin Liska <mliska@suse.cz>2022-01-17 22:12:04 +0100
commit5c69acb32329d49e58c26fa41ae74229a52b9106 (patch)
treeddb05f9d73afb6f998457d2ac4b720e3b3b60483 /gcc/cp/vtable-class-hierarchy.c
parent490e23032baaece71f2ec09fa1805064b150fbc2 (diff)
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Rename .c files to .cc files.
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common/config/epiphany/epiphany-common.c: Moved to... * common/config/epiphany/epiphany-common.cc: ...here. * common/config/fr30/fr30-common.c: Moved to... * common/config/fr30/fr30-common.cc: ...here. * common/config/frv/frv-common.c: Moved to... * common/config/frv/frv-common.cc: ...here. * common/config/gcn/gcn-common.c: Moved to... * common/config/gcn/gcn-common.cc: ...here. * common/config/h8300/h8300-common.c: Moved to... * common/config/h8300/h8300-common.cc: ...here. * common/config/i386/i386-common.c: Moved to... * common/config/i386/i386-common.cc: ...here. * common/config/ia64/ia64-common.c: Moved to... * common/config/ia64/ia64-common.cc: ...here. * common/config/iq2000/iq2000-common.c: Moved to... * common/config/iq2000/iq2000-common.cc: ...here. * common/config/lm32/lm32-common.c: Moved to... * common/config/lm32/lm32-common.cc: ...here. * common/config/m32r/m32r-common.c: Moved to... * common/config/m32r/m32r-common.cc: ...here. * common/config/m68k/m68k-common.c: Moved 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config/pru/pru.cc: ...here. * config/riscv/riscv-builtins.c: Moved to... * config/riscv/riscv-builtins.cc: ...here. * config/riscv/riscv-c.c: Moved to... * config/riscv/riscv-c.cc: ...here. * config/riscv/riscv-d.c: Moved to... * config/riscv/riscv-d.cc: ...here. * config/riscv/riscv-shorten-memrefs.c: Moved to... * config/riscv/riscv-shorten-memrefs.cc: ...here. * config/riscv/riscv-sr.c: Moved to... * config/riscv/riscv-sr.cc: ...here. * config/riscv/riscv.c: Moved to... * config/riscv/riscv.cc: ...here. * config/rl78/rl78-c.c: Moved to... * config/rl78/rl78-c.cc: ...here. * config/rl78/rl78.c: Moved to... * config/rl78/rl78.cc: ...here. * config/rs6000/driver-rs6000.c: Moved to... * config/rs6000/driver-rs6000.cc: ...here. * config/rs6000/host-darwin.c: Moved to... * config/rs6000/host-darwin.cc: ...here. * config/rs6000/host-ppc64-darwin.c: Moved to... * config/rs6000/host-ppc64-darwin.cc: ...here. * config/rs6000/rbtree.c: Moved to... * config/rs6000/rbtree.cc: ...here. * config/rs6000/rs6000-c.c: Moved to... * config/rs6000/rs6000-c.cc: ...here. * config/rs6000/rs6000-call.c: Moved to... * config/rs6000/rs6000-call.cc: ...here. * config/rs6000/rs6000-d.c: Moved to... * config/rs6000/rs6000-d.cc: ...here. * config/rs6000/rs6000-gen-builtins.c: Moved to... * config/rs6000/rs6000-gen-builtins.cc: ...here. * config/rs6000/rs6000-linux.c: Moved to... * config/rs6000/rs6000-linux.cc: ...here. * config/rs6000/rs6000-logue.c: Moved to... * config/rs6000/rs6000-logue.cc: ...here. * config/rs6000/rs6000-p8swap.c: Moved to... * config/rs6000/rs6000-p8swap.cc: ...here. * config/rs6000/rs6000-pcrel-opt.c: Moved to... * config/rs6000/rs6000-pcrel-opt.cc: ...here. * config/rs6000/rs6000-string.c: Moved to... * config/rs6000/rs6000-string.cc: ...here. * config/rs6000/rs6000.c: Moved to... * config/rs6000/rs6000.cc: ...here. * config/rx/rx.c: Moved to... * config/rx/rx.cc: ...here. * config/s390/driver-native.c: Moved to... * config/s390/driver-native.cc: ...here. * config/s390/s390-c.c: Moved to... * config/s390/s390-c.cc: ...here. * config/s390/s390-d.c: Moved to... * config/s390/s390-d.cc: ...here. * config/s390/s390.c: Moved to... * config/s390/s390.cc: ...here. * config/sh/divtab-sh4-300.c: Moved to... * config/sh/divtab-sh4-300.cc: ...here. * config/sh/divtab-sh4.c: Moved to... * config/sh/divtab-sh4.cc: ...here. * config/sh/divtab.c: Moved to... * config/sh/divtab.cc: ...here. * config/sh/sh-c.c: Moved to... * config/sh/sh-c.cc: ...here. * config/sh/sh.c: Moved to... * config/sh/sh.cc: ...here. * config/sol2-c.c: Moved to... * config/sol2-c.cc: ...here. * config/sol2-cxx.c: Moved to... * config/sol2-cxx.cc: ...here. * config/sol2-d.c: Moved to... * config/sol2-d.cc: ...here. * config/sol2-stubs.c: Moved to... * config/sol2-stubs.cc: ...here. * config/sol2.c: Moved to... * config/sol2.cc: ...here. * config/sparc/driver-sparc.c: Moved to... * config/sparc/driver-sparc.cc: ...here. * config/sparc/sparc-c.c: Moved to... * config/sparc/sparc-c.cc: ...here. * config/sparc/sparc-d.c: Moved to... * config/sparc/sparc-d.cc: ...here. * config/sparc/sparc.c: Moved to... * config/sparc/sparc.cc: ...here. * config/stormy16/stormy16.c: Moved to... * config/stormy16/stormy16.cc: ...here. * config/tilegx/mul-tables.c: Moved to... * config/tilegx/mul-tables.cc: ...here. * config/tilegx/tilegx-c.c: Moved to... * config/tilegx/tilegx-c.cc: ...here. * config/tilegx/tilegx.c: Moved to... * config/tilegx/tilegx.cc: ...here. * config/tilepro/mul-tables.c: Moved to... * config/tilepro/mul-tables.cc: ...here. * config/tilepro/tilepro-c.c: Moved to... * config/tilepro/tilepro-c.cc: ...here. * config/tilepro/tilepro.c: Moved to... * config/tilepro/tilepro.cc: ...here. * config/v850/v850-c.c: Moved to... * config/v850/v850-c.cc: ...here. * config/v850/v850.c: Moved to... * config/v850/v850.cc: ...here. * config/vax/vax.c: Moved to... * config/vax/vax.cc: ...here. * config/visium/visium.c: Moved to... * config/visium/visium.cc: ...here. * config/vms/vms-c.c: Moved to... * config/vms/vms-c.cc: ...here. * config/vms/vms-f.c: Moved to... * config/vms/vms-f.cc: ...here. * config/vms/vms.c: Moved to... * config/vms/vms.cc: ...here. * config/vxworks-c.c: Moved to... * config/vxworks-c.cc: ...here. * config/vxworks.c: Moved to... * config/vxworks.cc: ...here. * config/winnt-c.c: Moved to... * config/winnt-c.cc: ...here. * config/xtensa/xtensa.c: Moved to... * config/xtensa/xtensa.cc: ...here. * context.c: Moved to... * context.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * coverage.c: Moved to... * coverage.cc: ...here. * cppbuiltin.c: Moved to... * cppbuiltin.cc: ...here. * cppdefault.c: Moved to... * cppdefault.cc: ...here. * cprop.c: Moved to... * cprop.cc: ...here. * cse.c: Moved to... * cse.cc: ...here. * cselib.c: Moved to... * cselib.cc: ...here. * ctfc.c: Moved to... * ctfc.cc: ...here. * ctfout.c: Moved to... * ctfout.cc: ...here. * data-streamer-in.c: Moved to... * data-streamer-in.cc: ...here. * data-streamer-out.c: Moved to... * data-streamer-out.cc: ...here. * data-streamer.c: Moved to... * data-streamer.cc: ...here. * dbgcnt.c: Moved to... * dbgcnt.cc: ...here. * dbxout.c: Moved to... * dbxout.cc: ...here. * dce.c: Moved to... * dce.cc: ...here. * ddg.c: Moved to... * ddg.cc: ...here. * debug.c: Moved to... * debug.cc: ...here. * df-core.c: Moved to... * df-core.cc: ...here. * df-problems.c: Moved to... * df-problems.cc: ...here. * df-scan.c: Moved to... * df-scan.cc: ...here. * dfp.c: Moved to... * dfp.cc: ...here. * diagnostic-color.c: Moved to... * diagnostic-color.cc: ...here. * diagnostic-show-locus.c: Moved to... * diagnostic-show-locus.cc: ...here. * diagnostic-spec.c: Moved to... * diagnostic-spec.cc: ...here. * diagnostic.c: Moved to... * diagnostic.cc: ...here. * dojump.c: Moved to... * dojump.cc: ...here. * dominance.c: Moved to... * dominance.cc: ...here. * domwalk.c: Moved to... * domwalk.cc: ...here. * double-int.c: Moved to... * double-int.cc: ...here. * dse.c: Moved to... * dse.cc: ...here. * dumpfile.c: Moved to... * dumpfile.cc: ...here. * dwarf2asm.c: Moved to... * dwarf2asm.cc: ...here. * dwarf2cfi.c: Moved to... * dwarf2cfi.cc: ...here. * dwarf2ctf.c: Moved to... * dwarf2ctf.cc: ...here. * dwarf2out.c: Moved to... * dwarf2out.cc: ...here. * early-remat.c: Moved to... * early-remat.cc: ...here. * edit-context.c: Moved to... * edit-context.cc: ...here. * emit-rtl.c: Moved to... * emit-rtl.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * et-forest.c: Moved to... * et-forest.cc: ...here. * except.c: Moved to... * except.cc: ...here. * explow.c: Moved to... * explow.cc: ...here. * expmed.c: Moved to... * expmed.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * fibonacci_heap.c: Moved to... * fibonacci_heap.cc: ...here. * file-find.c: Moved to... * file-find.cc: ...here. * file-prefix-map.c: Moved to... * file-prefix-map.cc: ...here. * final.c: Moved to... * final.cc: ...here. * fixed-value.c: Moved to... * fixed-value.cc: ...here. * fold-const-call.c: Moved to... * fold-const-call.cc: ...here. * fold-const.c: Moved to... * fold-const.cc: ...here. * fp-test.c: Moved to... * fp-test.cc: ...here. * function-tests.c: Moved to... * function-tests.cc: ...here. * function.c: Moved to... * function.cc: ...here. * fwprop.c: Moved to... * fwprop.cc: ...here. * gcc-ar.c: Moved to... * gcc-ar.cc: ...here. * gcc-main.c: Moved to... * gcc-main.cc: ...here. * gcc-rich-location.c: Moved to... * gcc-rich-location.cc: ...here. * gcc.c: Moved to... * gcc.cc: ...here. * gcov-dump.c: Moved to... * gcov-dump.cc: ...here. * gcov-io.c: Moved to... * gcov-io.cc: ...here. * gcov-tool.c: Moved to... * gcov-tool.cc: ...here. * gcov.c: Moved to... * gcov.cc: ...here. * gcse-common.c: Moved to... * gcse-common.cc: ...here. * gcse.c: Moved to... * gcse.cc: ...here. * genattr-common.c: Moved to... * genattr-common.cc: ...here. * genattr.c: Moved to... * genattr.cc: ...here. * genattrtab.c: Moved to... * genattrtab.cc: ...here. * genautomata.c: Moved to... * genautomata.cc: ...here. * gencfn-macros.c: Moved to... * gencfn-macros.cc: ...here. * gencheck.c: Moved to... * gencheck.cc: ...here. * genchecksum.c: Moved to... * genchecksum.cc: ...here. * gencodes.c: Moved to... * gencodes.cc: ...here. * genconditions.c: Moved to... * genconditions.cc: ...here. * genconfig.c: Moved to... * genconfig.cc: ...here. * genconstants.c: Moved to... * genconstants.cc: ...here. * genemit.c: Moved to... * genemit.cc: ...here. * genenums.c: Moved to... * genenums.cc: ...here. * generic-match-head.c: Moved to... * generic-match-head.cc: ...here. * genextract.c: Moved to... * genextract.cc: ...here. * genflags.c: Moved to... * genflags.cc: ...here. * gengenrtl.c: Moved to... * gengenrtl.cc: ...here. * gengtype-parse.c: Moved to... * gengtype-parse.cc: ...here. * gengtype-state.c: Moved to... * gengtype-state.cc: ...here. * gengtype.c: Moved to... * gengtype.cc: ...here. * genhooks.c: Moved to... * genhooks.cc: ...here. * genmatch.c: Moved to... * genmatch.cc: ...here. * genmddeps.c: Moved to... * genmddeps.cc: ...here. * genmddump.c: Moved to... * genmddump.cc: ...here. * genmodes.c: Moved to... * genmodes.cc: ...here. * genopinit.c: Moved to... * genopinit.cc: ...here. * genoutput.c: Moved to... * genoutput.cc: ...here. * genpeep.c: Moved to... * genpeep.cc: ...here. * genpreds.c: Moved to... * genpreds.cc: ...here. * genrecog.c: Moved to... * genrecog.cc: ...here. * gensupport.c: Moved to... * gensupport.cc: ...here. * gentarget-def.c: Moved to... * gentarget-def.cc: ...here. * genversion.c: Moved to... * genversion.cc: ...here. * ggc-common.c: Moved to... * ggc-common.cc: ...here. * ggc-none.c: Moved to... * ggc-none.cc: ...here. * ggc-page.c: Moved to... * ggc-page.cc: ...here. * ggc-tests.c: Moved to... * ggc-tests.cc: ...here. * gimple-builder.c: Moved to... * gimple-builder.cc: ...here. * gimple-expr.c: Moved to... * gimple-expr.cc: ...here. * gimple-fold.c: Moved to... * gimple-fold.cc: ...here. * gimple-iterator.c: Moved to... * gimple-iterator.cc: ...here. * gimple-laddress.c: Moved to... * gimple-laddress.cc: ...here. * gimple-loop-jam.c: Moved to... * gimple-loop-jam.cc: ...here. * gimple-low.c: Moved to... * gimple-low.cc: ...here. * gimple-match-head.c: Moved to... * gimple-match-head.cc: ...here. * gimple-pretty-print.c: Moved to... * gimple-pretty-print.cc: ...here. * gimple-ssa-backprop.c: Moved to... * gimple-ssa-backprop.cc: ...here. * gimple-ssa-evrp-analyze.c: Moved to... * gimple-ssa-evrp-analyze.cc: ...here. * gimple-ssa-evrp.c: Moved to... * gimple-ssa-evrp.cc: ...here. * gimple-ssa-isolate-paths.c: Moved to... * gimple-ssa-isolate-paths.cc: ...here. * gimple-ssa-nonnull-compare.c: Moved to... * gimple-ssa-nonnull-compare.cc: ...here. * gimple-ssa-split-paths.c: Moved to... * gimple-ssa-split-paths.cc: ...here. * gimple-ssa-sprintf.c: Moved to... * gimple-ssa-sprintf.cc: ...here. * gimple-ssa-store-merging.c: Moved to... * gimple-ssa-store-merging.cc: ...here. * gimple-ssa-strength-reduction.c: Moved to... * gimple-ssa-strength-reduction.cc: ...here. * gimple-ssa-warn-alloca.c: Moved to... * gimple-ssa-warn-alloca.cc: ...here. * gimple-ssa-warn-restrict.c: Moved to... * gimple-ssa-warn-restrict.cc: ...here. * gimple-streamer-in.c: Moved to... * gimple-streamer-in.cc: ...here. * gimple-streamer-out.c: Moved to... * gimple-streamer-out.cc: ...here. * gimple-walk.c: Moved to... * gimple-walk.cc: ...here. * gimple-warn-recursion.c: Moved to... * gimple-warn-recursion.cc: ...here. * gimple.c: Moved to... * gimple.cc: ...here. * gimplify-me.c: Moved to... * gimplify-me.cc: ...here. * gimplify.c: Moved to... * gimplify.cc: ...here. * godump.c: Moved to... * godump.cc: ...here. * graph.c: Moved to... * graph.cc: ...here. * graphds.c: Moved to... * graphds.cc: ...here. * graphite-dependences.c: Moved to... * graphite-dependences.cc: ...here. * graphite-isl-ast-to-gimple.c: Moved to... * graphite-isl-ast-to-gimple.cc: ...here. * graphite-optimize-isl.c: Moved to... * graphite-optimize-isl.cc: ...here. * graphite-poly.c: Moved to... * graphite-poly.cc: ...here. * graphite-scop-detection.c: Moved to... * graphite-scop-detection.cc: ...here. * graphite-sese-to-poly.c: Moved to... * graphite-sese-to-poly.cc: ...here. * graphite.c: Moved to... * graphite.cc: ...here. * haifa-sched.c: Moved to... * haifa-sched.cc: ...here. * hash-map-tests.c: Moved to... * hash-map-tests.cc: ...here. * hash-set-tests.c: Moved to... * hash-set-tests.cc: ...here. * hash-table.c: Moved to... * hash-table.cc: ...here. * hooks.c: Moved to... * hooks.cc: ...here. * host-default.c: Moved to... * host-default.cc: ...here. * hw-doloop.c: Moved to... * hw-doloop.cc: ...here. * hwint.c: Moved to... * hwint.cc: ...here. * ifcvt.c: Moved to... * ifcvt.cc: ...here. * inchash.c: Moved to... * inchash.cc: ...here. * incpath.c: Moved to... * incpath.cc: ...here. * init-regs.c: Moved to... * init-regs.cc: ...here. * input.c: Moved to... * input.cc: ...here. * internal-fn.c: Moved to... * internal-fn.cc: ...here. * intl.c: Moved to... * intl.cc: ...here. * ipa-comdats.c: Moved to... * ipa-comdats.cc: ...here. * ipa-cp.c: Moved to... * ipa-cp.cc: ...here. * ipa-devirt.c: Moved to... * ipa-devirt.cc: ...here. * ipa-fnsummary.c: Moved to... * ipa-fnsummary.cc: ...here. * ipa-icf-gimple.c: Moved to... * ipa-icf-gimple.cc: ...here. * ipa-icf.c: Moved to... * ipa-icf.cc: ...here. * ipa-inline-analysis.c: Moved to... * ipa-inline-analysis.cc: ...here. * ipa-inline-transform.c: Moved to... * ipa-inline-transform.cc: ...here. * ipa-inline.c: Moved to... * ipa-inline.cc: ...here. * ipa-modref-tree.c: Moved to... * ipa-modref-tree.cc: ...here. * ipa-modref.c: Moved to... * ipa-modref.cc: ...here. * ipa-param-manipulation.c: Moved to... * ipa-param-manipulation.cc: ...here. * ipa-polymorphic-call.c: Moved to... * ipa-polymorphic-call.cc: ...here. * ipa-predicate.c: Moved to... * ipa-predicate.cc: ...here. * ipa-profile.c: Moved to... * ipa-profile.cc: ...here. * ipa-prop.c: Moved to... * ipa-prop.cc: ...here. * ipa-pure-const.c: Moved to... * ipa-pure-const.cc: ...here. * ipa-ref.c: Moved to... * ipa-ref.cc: ...here. * ipa-reference.c: Moved to... * ipa-reference.cc: ...here. * ipa-split.c: Moved to... * ipa-split.cc: ...here. * ipa-sra.c: Moved to... * ipa-sra.cc: ...here. * ipa-utils.c: Moved to... * ipa-utils.cc: ...here. * ipa-visibility.c: Moved to... * ipa-visibility.cc: ...here. * ipa.c: Moved to... * ipa.cc: ...here. * ira-build.c: Moved to... * ira-build.cc: ...here. * ira-color.c: Moved to... * ira-color.cc: ...here. * ira-conflicts.c: Moved to... * ira-conflicts.cc: ...here. * ira-costs.c: Moved to... * ira-costs.cc: ...here. * ira-emit.c: Moved to... * ira-emit.cc: ...here. * ira-lives.c: Moved to... * ira-lives.cc: ...here. * ira.c: Moved to... * ira.cc: ...here. * jump.c: Moved to... * jump.cc: ...here. * langhooks.c: Moved to... * langhooks.cc: ...here. * lcm.c: Moved to... * lcm.cc: ...here. * lists.c: Moved to... * lists.cc: ...here. * loop-doloop.c: Moved to... * loop-doloop.cc: ...here. * loop-init.c: Moved to... * loop-init.cc: ...here. * loop-invariant.c: Moved to... * loop-invariant.cc: ...here. * loop-iv.c: Moved to... * loop-iv.cc: ...here. * loop-unroll.c: Moved to... * loop-unroll.cc: ...here. * lower-subreg.c: Moved to... * lower-subreg.cc: ...here. * lra-assigns.c: Moved to... * lra-assigns.cc: ...here. * lra-coalesce.c: Moved to... * lra-coalesce.cc: ...here. * lra-constraints.c: Moved to... * lra-constraints.cc: ...here. * lra-eliminations.c: Moved to... * lra-eliminations.cc: ...here. * lra-lives.c: Moved to... * lra-lives.cc: ...here. * lra-remat.c: Moved to... * lra-remat.cc: ...here. * lra-spills.c: Moved to... * lra-spills.cc: ...here. * lra.c: Moved to... * lra.cc: ...here. * lto-cgraph.c: Moved to... * lto-cgraph.cc: ...here. * lto-compress.c: Moved to... * lto-compress.cc: ...here. * lto-opts.c: Moved to... * lto-opts.cc: ...here. * lto-section-in.c: Moved to... * lto-section-in.cc: ...here. * lto-section-out.c: Moved to... * lto-section-out.cc: ...here. * lto-streamer-in.c: Moved to... * lto-streamer-in.cc: ...here. * lto-streamer-out.c: Moved to... * lto-streamer-out.cc: ...here. * lto-streamer.c: Moved to... * lto-streamer.cc: ...here. * lto-wrapper.c: Moved to... * lto-wrapper.cc: ...here. * main.c: Moved to... * main.cc: ...here. * mcf.c: Moved to... * mcf.cc: ...here. * mode-switching.c: Moved to... * mode-switching.cc: ...here. * modulo-sched.c: Moved to... * modulo-sched.cc: ...here. * multiple_target.c: Moved to... * multiple_target.cc: ...here. * omp-expand.c: Moved to... * omp-expand.cc: ...here. * omp-general.c: Moved to... * omp-general.cc: ...here. * omp-low.c: Moved to... * omp-low.cc: ...here. * omp-offload.c: Moved to... * omp-offload.cc: ...here. * omp-simd-clone.c: Moved to... * omp-simd-clone.cc: ...here. * opt-suggestions.c: Moved to... * opt-suggestions.cc: ...here. * optabs-libfuncs.c: Moved to... * optabs-libfuncs.cc: ...here. * optabs-query.c: Moved to... * optabs-query.cc: ...here. * optabs-tree.c: Moved to... * optabs-tree.cc: ...here. * optabs.c: Moved to... * optabs.cc: ...here. * opts-common.c: Moved to... * opts-common.cc: ...here. * opts-global.c: Moved to... * opts-global.cc: ...here. * opts.c: Moved to... * opts.cc: ...here. * passes.c: Moved to... * passes.cc: ...here. * plugin.c: Moved to... * plugin.cc: ...here. * postreload-gcse.c: Moved to... * postreload-gcse.cc: ...here. * postreload.c: Moved to... * postreload.cc: ...here. * predict.c: Moved to... * predict.cc: ...here. * prefix.c: Moved to... * prefix.cc: ...here. * pretty-print.c: Moved to... * pretty-print.cc: ...here. * print-rtl-function.c: Moved to... * print-rtl-function.cc: ...here. * print-rtl.c: Moved to... * print-rtl.cc: ...here. * print-tree.c: Moved to... * print-tree.cc: ...here. * profile-count.c: Moved to... * profile-count.cc: ...here. * profile.c: Moved to... * profile.cc: ...here. * read-md.c: Moved to... * read-md.cc: ...here. * read-rtl-function.c: Moved to... * read-rtl-function.cc: ...here. * read-rtl.c: Moved to... * read-rtl.cc: ...here. * real.c: Moved to... * real.cc: ...here. * realmpfr.c: Moved to... * realmpfr.cc: ...here. * recog.c: Moved to... * recog.cc: ...here. * ree.c: Moved to... * ree.cc: ...here. * reg-stack.c: Moved to... * reg-stack.cc: ...here. * regcprop.c: Moved to... * regcprop.cc: ...here. * reginfo.c: Moved to... * reginfo.cc: ...here. * regrename.c: Moved to... * regrename.cc: ...here. * regstat.c: Moved to... * regstat.cc: ...here. * reload.c: Moved to... * reload.cc: ...here. * reload1.c: Moved to... * reload1.cc: ...here. * reorg.c: Moved to... * reorg.cc: ...here. * resource.c: Moved to... * resource.cc: ...here. * rtl-error.c: Moved to... * rtl-error.cc: ...here. * rtl-tests.c: Moved to... * rtl-tests.cc: ...here. * rtl.c: Moved to... * rtl.cc: ...here. * rtlanal.c: Moved to... * rtlanal.cc: ...here. * rtlhash.c: Moved to... * rtlhash.cc: ...here. * rtlhooks.c: Moved to... * rtlhooks.cc: ...here. * rtx-vector-builder.c: Moved to... * rtx-vector-builder.cc: ...here. * run-rtl-passes.c: Moved to... * run-rtl-passes.cc: ...here. * sancov.c: Moved to... * sancov.cc: ...here. * sanopt.c: Moved to... * sanopt.cc: ...here. * sbitmap.c: Moved to... * sbitmap.cc: ...here. * sched-deps.c: Moved to... * sched-deps.cc: ...here. * sched-ebb.c: Moved to... * sched-ebb.cc: ...here. * sched-rgn.c: Moved to... * sched-rgn.cc: ...here. * sel-sched-dump.c: Moved to... * sel-sched-dump.cc: ...here. * sel-sched-ir.c: Moved to... * sel-sched-ir.cc: ...here. * sel-sched.c: Moved to... * sel-sched.cc: ...here. * selftest-diagnostic.c: Moved to... * selftest-diagnostic.cc: ...here. * selftest-rtl.c: Moved to... * selftest-rtl.cc: ...here. * selftest-run-tests.c: Moved to... * selftest-run-tests.cc: ...here. * selftest.c: Moved to... * selftest.cc: ...here. * sese.c: Moved to... * sese.cc: ...here. * shrink-wrap.c: Moved to... * shrink-wrap.cc: ...here. * simplify-rtx.c: Moved to... * simplify-rtx.cc: ...here. * sparseset.c: Moved to... * sparseset.cc: ...here. * spellcheck-tree.c: Moved to... * spellcheck-tree.cc: ...here. * spellcheck.c: Moved to... * spellcheck.cc: ...here. * sreal.c: Moved to... * sreal.cc: ...here. * stack-ptr-mod.c: Moved to... * stack-ptr-mod.cc: ...here. * statistics.c: Moved to... * statistics.cc: ...here. * stmt.c: Moved to... * stmt.cc: ...here. * stor-layout.c: Moved to... * stor-layout.cc: ...here. * store-motion.c: Moved to... * store-motion.cc: ...here. * streamer-hooks.c: Moved to... * streamer-hooks.cc: ...here. * stringpool.c: Moved to... * stringpool.cc: ...here. * substring-locations.c: Moved to... * substring-locations.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * target-globals.c: Moved to... * target-globals.cc: ...here. * targhooks.c: Moved to... * targhooks.cc: ...here. * timevar.c: Moved to... * timevar.cc: ...here. * toplev.c: Moved to... * toplev.cc: ...here. * tracer.c: Moved to... * tracer.cc: ...here. * trans-mem.c: Moved to... * trans-mem.cc: ...here. * tree-affine.c: Moved to... * tree-affine.cc: ...here. * tree-call-cdce.c: Moved to... * tree-call-cdce.cc: ...here. * tree-cfg.c: Moved to... * tree-cfg.cc: ...here. * tree-cfgcleanup.c: Moved to... * tree-cfgcleanup.cc: ...here. * tree-chrec.c: Moved to... * tree-chrec.cc: ...here. * tree-complex.c: Moved to... * tree-complex.cc: ...here. * tree-data-ref.c: Moved to... * tree-data-ref.cc: ...here. * tree-dfa.c: Moved to... * tree-dfa.cc: ...here. * tree-diagnostic.c: Moved to... * tree-diagnostic.cc: ...here. * tree-dump.c: Moved to... * tree-dump.cc: ...here. * tree-eh.c: Moved to... * tree-eh.cc: ...here. * tree-emutls.c: Moved to... * tree-emutls.cc: ...here. * tree-if-conv.c: Moved to... * tree-if-conv.cc: ...here. * tree-inline.c: Moved to... * tree-inline.cc: ...here. * tree-into-ssa.c: Moved to... * tree-into-ssa.cc: ...here. * tree-iterator.c: Moved to... * tree-iterator.cc: ...here. * tree-loop-distribution.c: Moved to... * tree-loop-distribution.cc: ...here. * tree-nested.c: Moved to... * tree-nested.cc: ...here. * tree-nrv.c: Moved to... * tree-nrv.cc: ...here. * tree-object-size.c: Moved to... * tree-object-size.cc: ...here. * tree-outof-ssa.c: Moved to... * tree-outof-ssa.cc: ...here. * tree-parloops.c: Moved to... * tree-parloops.cc: ...here. * tree-phinodes.c: Moved to... * tree-phinodes.cc: ...here. * tree-predcom.c: Moved to... * tree-predcom.cc: ...here. * tree-pretty-print.c: Moved to... * tree-pretty-print.cc: ...here. * tree-profile.c: Moved to... * tree-profile.cc: ...here. * tree-scalar-evolution.c: Moved to... * tree-scalar-evolution.cc: ...here. * tree-sra.c: Moved to... * tree-sra.cc: ...here. * tree-ssa-address.c: Moved to... * tree-ssa-address.cc: ...here. * tree-ssa-alias.c: Moved to... * tree-ssa-alias.cc: ...here. * tree-ssa-ccp.c: Moved to... * tree-ssa-ccp.cc: ...here. * tree-ssa-coalesce.c: Moved to... * tree-ssa-coalesce.cc: ...here. * tree-ssa-copy.c: Moved to... * tree-ssa-copy.cc: ...here. * tree-ssa-dce.c: Moved to... * tree-ssa-dce.cc: ...here. * tree-ssa-dom.c: Moved to... * tree-ssa-dom.cc: ...here. * tree-ssa-dse.c: Moved to... * tree-ssa-dse.cc: ...here. * tree-ssa-forwprop.c: Moved to... * tree-ssa-forwprop.cc: ...here. * tree-ssa-ifcombine.c: Moved to... * tree-ssa-ifcombine.cc: ...here. * tree-ssa-live.c: Moved to... * tree-ssa-live.cc: ...here. * tree-ssa-loop-ch.c: Moved to... * tree-ssa-loop-ch.cc: ...here. * tree-ssa-loop-im.c: Moved to... * tree-ssa-loop-im.cc: ...here. * tree-ssa-loop-ivcanon.c: Moved to... * tree-ssa-loop-ivcanon.cc: ...here. * tree-ssa-loop-ivopts.c: Moved to... * tree-ssa-loop-ivopts.cc: ...here. * tree-ssa-loop-manip.c: Moved to... * tree-ssa-loop-manip.cc: ...here. * tree-ssa-loop-niter.c: Moved to... * tree-ssa-loop-niter.cc: ...here. * tree-ssa-loop-prefetch.c: Moved to... * tree-ssa-loop-prefetch.cc: ...here. * tree-ssa-loop-split.c: Moved to... * tree-ssa-loop-split.cc: ...here. * tree-ssa-loop-unswitch.c: Moved to... * tree-ssa-loop-unswitch.cc: ...here. * tree-ssa-loop.c: Moved to... * tree-ssa-loop.cc: ...here. * tree-ssa-math-opts.c: Moved to... * tree-ssa-math-opts.cc: ...here. * tree-ssa-operands.c: Moved to... * tree-ssa-operands.cc: ...here. * tree-ssa-phiopt.c: Moved to... * tree-ssa-phiopt.cc: ...here. * tree-ssa-phiprop.c: Moved to... * tree-ssa-phiprop.cc: ...here. * tree-ssa-pre.c: Moved to... * tree-ssa-pre.cc: ...here. * tree-ssa-propagate.c: Moved to... * tree-ssa-propagate.cc: ...here. * tree-ssa-reassoc.c: Moved to... * tree-ssa-reassoc.cc: ...here. * tree-ssa-sccvn.c: Moved to... * tree-ssa-sccvn.cc: ...here. * tree-ssa-scopedtables.c: Moved to... * tree-ssa-scopedtables.cc: ...here. * tree-ssa-sink.c: Moved to... * tree-ssa-sink.cc: ...here. * tree-ssa-strlen.c: Moved to... * tree-ssa-strlen.cc: ...here. * tree-ssa-structalias.c: Moved to... * tree-ssa-structalias.cc: ...here. * tree-ssa-tail-merge.c: Moved to... * tree-ssa-tail-merge.cc: ...here. * tree-ssa-ter.c: Moved to... * tree-ssa-ter.cc: ...here. * tree-ssa-threadbackward.c: Moved to... * tree-ssa-threadbackward.cc: ...here. * tree-ssa-threadedge.c: Moved to... * tree-ssa-threadedge.cc: ...here. * tree-ssa-threadupdate.c: Moved to... * tree-ssa-threadupdate.cc: ...here. * tree-ssa-uncprop.c: Moved to... * tree-ssa-uncprop.cc: ...here. * tree-ssa-uninit.c: Moved to... * tree-ssa-uninit.cc: ...here. * tree-ssa.c: Moved to... * tree-ssa.cc: ...here. * tree-ssanames.c: Moved to... * tree-ssanames.cc: ...here. * tree-stdarg.c: Moved to... * tree-stdarg.cc: ...here. * tree-streamer-in.c: Moved to... * tree-streamer-in.cc: ...here. * tree-streamer-out.c: Moved to... * tree-streamer-out.cc: ...here. * tree-streamer.c: Moved to... * tree-streamer.cc: ...here. * tree-switch-conversion.c: Moved to... * tree-switch-conversion.cc: ...here. * tree-tailcall.c: Moved to... * tree-tailcall.cc: ...here. * tree-vect-data-refs.c: Moved to... * tree-vect-data-refs.cc: ...here. * tree-vect-generic.c: Moved to... * tree-vect-generic.cc: ...here. * tree-vect-loop-manip.c: Moved to... * tree-vect-loop-manip.cc: ...here. * tree-vect-loop.c: Moved to... * tree-vect-loop.cc: ...here. * tree-vect-patterns.c: Moved to... * tree-vect-patterns.cc: ...here. * tree-vect-slp-patterns.c: Moved to... * tree-vect-slp-patterns.cc: ...here. * tree-vect-slp.c: Moved to... * tree-vect-slp.cc: ...here. * tree-vect-stmts.c: Moved to... * tree-vect-stmts.cc: ...here. * tree-vector-builder.c: Moved to... * tree-vector-builder.cc: ...here. * tree-vectorizer.c: Moved to... * tree-vectorizer.cc: ...here. * tree-vrp.c: Moved to... * tree-vrp.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * tsan.c: Moved to... * tsan.cc: ...here. * typed-splay-tree.c: Moved to... * typed-splay-tree.cc: ...here. * ubsan.c: Moved to... * ubsan.cc: ...here. * valtrack.c: Moved to... * valtrack.cc: ...here. * value-prof.c: Moved to... * value-prof.cc: ...here. * var-tracking.c: Moved to... * var-tracking.cc: ...here. * varasm.c: Moved to... * varasm.cc: ...here. * varpool.c: Moved to... * varpool.cc: ...here. * vec-perm-indices.c: Moved to... * vec-perm-indices.cc: ...here. * vec.c: Moved to... * vec.cc: ...here. * vmsdbgout.c: Moved to... * vmsdbgout.cc: ...here. * vr-values.c: Moved to... * vr-values.cc: ...here. * vtable-verify.c: Moved to... * vtable-verify.cc: ...here. * web.c: Moved to... * web.cc: ...here. * xcoffout.c: Moved to... * xcoffout.cc: ...here. gcc/c-family/ChangeLog: * c-ada-spec.c: Moved to... * c-ada-spec.cc: ...here. * c-attribs.c: Moved to... * c-attribs.cc: ...here. * c-common.c: Moved to... * c-common.cc: ...here. * c-cppbuiltin.c: Moved to... * c-cppbuiltin.cc: ...here. * c-dump.c: Moved to... * c-dump.cc: ...here. * c-format.c: Moved to... * c-format.cc: ...here. * c-gimplify.c: Moved to... * c-gimplify.cc: ...here. * c-indentation.c: Moved to... * c-indentation.cc: ...here. * c-lex.c: Moved to... * c-lex.cc: ...here. * c-omp.c: Moved to... * c-omp.cc: ...here. * c-opts.c: Moved to... * c-opts.cc: ...here. * c-pch.c: Moved to... * c-pch.cc: ...here. * c-ppoutput.c: Moved to... * c-ppoutput.cc: ...here. * c-pragma.c: Moved to... * c-pragma.cc: ...here. * c-pretty-print.c: Moved to... * c-pretty-print.cc: ...here. * c-semantics.c: Moved to... * c-semantics.cc: ...here. * c-ubsan.c: Moved to... * c-ubsan.cc: ...here. * c-warn.c: Moved to... * c-warn.cc: ...here. * cppspec.c: Moved to... * cppspec.cc: ...here. * stub-objc.c: Moved to... * stub-objc.cc: ...here. gcc/c/ChangeLog: * c-aux-info.c: Moved to... * c-aux-info.cc: ...here. * c-convert.c: Moved to... * c-convert.cc: ...here. * c-decl.c: Moved to... * c-decl.cc: ...here. * c-errors.c: Moved to... * c-errors.cc: ...here. * c-fold.c: Moved to... * c-fold.cc: ...here. * c-lang.c: Moved to... * c-lang.cc: ...here. * c-objc-common.c: Moved to... * c-objc-common.cc: ...here. * c-parser.c: Moved to... * c-parser.cc: ...here. * c-typeck.c: Moved to... * c-typeck.cc: ...here. * gccspec.c: Moved to... * gccspec.cc: ...here. * gimple-parser.c: Moved to... * gimple-parser.cc: ...here. gcc/cp/ChangeLog: * call.c: Moved to... * call.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constexpr.c: Moved to... * constexpr.cc: ...here. * cp-gimplify.c: Moved to... * cp-gimplify.cc: ...here. * cp-lang.c: Moved to... * cp-lang.cc: ...here. * cp-objcp-common.c: Moved to... * cp-objcp-common.cc: ...here. * cp-ubsan.c: Moved to... * cp-ubsan.cc: ...here. * cvt.c: Moved to... * cvt.cc: ...here. * cxx-pretty-print.c: Moved to... * cxx-pretty-print.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * decl2.c: Moved to... * decl2.cc: ...here. * dump.c: Moved to... * dump.cc: ...here. * error.c: Moved to... * error.cc: ...here. * except.c: Moved to... * except.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * friend.c: Moved to... * friend.cc: ...here. * g++spec.c: Moved to... * g++spec.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lambda.c: Moved to... * lambda.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * mangle.c: Moved to... * mangle.cc: ...here. * method.c: Moved to... * method.cc: ...here. * name-lookup.c: Moved to... * name-lookup.cc: ...here. * optimize.c: Moved to... * optimize.cc: ...here. * parser.c: Moved to... * parser.cc: ...here. * pt.c: Moved to... * pt.cc: ...here. * ptree.c: Moved to... * ptree.cc: ...here. * rtti.c: Moved to... * rtti.cc: ...here. * search.c: Moved to... * search.cc: ...here. * semantics.c: Moved to... * semantics.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * typeck.c: Moved to... * typeck.cc: ...here. * typeck2.c: Moved to... * typeck2.cc: ...here. * vtable-class-hierarchy.c: Moved to... * vtable-class-hierarchy.cc: ...here. gcc/fortran/ChangeLog: * arith.c: Moved to... * arith.cc: ...here. * array.c: Moved to... * array.cc: ...here. * bbt.c: Moved to... * bbt.cc: ...here. * check.c: Moved to... * check.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constructor.c: Moved to... * constructor.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * cpp.c: Moved to... * cpp.cc: ...here. * data.c: Moved to... * data.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * dependency.c: Moved to... * dependency.cc: ...here. * dump-parse-tree.c: Moved to... * dump-parse-tree.cc: ...here. * error.c: Moved to... * error.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * f95-lang.c: Moved to... * f95-lang.cc: ...here. * frontend-passes.c: Moved to... * frontend-passes.cc: ...here. * gfortranspec.c: Moved to... * gfortranspec.cc: ...here. * interface.c: Moved to... * interface.cc: ...here. * intrinsic.c: Moved to... * intrinsic.cc: ...here. * io.c: Moved to... * io.cc: ...here. * iresolve.c: Moved to... * iresolve.cc: ...here. * match.c: Moved to... * match.cc: ...here. * matchexp.c: Moved to... * matchexp.cc: ...here. * misc.c: Moved to... * misc.cc: ...here. * module.c: Moved to... * module.cc: ...here. * openmp.c: Moved to... * openmp.cc: ...here. * options.c: Moved to... * options.cc: ...here. * parse.c: Moved to... * parse.cc: ...here. * primary.c: Moved to... * primary.cc: ...here. * resolve.c: Moved to... * resolve.cc: ...here. * scanner.c: Moved to... * scanner.cc: ...here. * simplify.c: Moved to... * simplify.cc: ...here. * st.c: Moved to... * st.cc: ...here. * symbol.c: Moved to... * symbol.cc: ...here. * target-memory.c: Moved to... * target-memory.cc: ...here. * trans-array.c: Moved to... * trans-array.cc: ...here. * trans-common.c: Moved to... * trans-common.cc: ...here. * trans-const.c: Moved to... * trans-const.cc: ...here. * trans-decl.c: Moved to... * trans-decl.cc: ...here. * trans-expr.c: Moved to... * trans-expr.cc: ...here. * trans-intrinsic.c: Moved to... * trans-intrinsic.cc: ...here. * trans-io.c: Moved to... * trans-io.cc: ...here. * trans-openmp.c: Moved to... * trans-openmp.cc: ...here. * trans-stmt.c: Moved to... * trans-stmt.cc: ...here. * trans-types.c: Moved to... * trans-types.cc: ...here. * trans.c: Moved to... * trans.cc: ...here. gcc/go/ChangeLog: * go-backend.c: Moved to... * go-backend.cc: ...here. * go-lang.c: Moved to... * go-lang.cc: ...here. * gospec.c: Moved to... * gospec.cc: ...here. gcc/jit/ChangeLog: * dummy-frontend.c: Moved to... * dummy-frontend.cc: ...here. * jit-builtins.c: Moved to... * jit-builtins.cc: ...here. * jit-logging.c: Moved to... * jit-logging.cc: ...here. * jit-playback.c: Moved to... * jit-playback.cc: ...here. * jit-recording.c: Moved to... * jit-recording.cc: ...here. * jit-result.c: Moved to... * jit-result.cc: ...here. * jit-spec.c: Moved to... * jit-spec.cc: ...here. * jit-tempdir.c: Moved to... * jit-tempdir.cc: ...here. * jit-w32.c: Moved to... * jit-w32.cc: ...here. * libgccjit.c: Moved to... * libgccjit.cc: ...here. gcc/lto/ChangeLog: * common.c: Moved to... * common.cc: ...here. * lto-common.c: Moved to... * lto-common.cc: ...here. * lto-dump.c: Moved to... * lto-dump.cc: ...here. * lto-lang.c: Moved to... * lto-lang.cc: ...here. * lto-object.c: Moved to... * lto-object.cc: ...here. * lto-partition.c: Moved to... * lto-partition.cc: ...here. * lto-symtab.c: Moved to... * lto-symtab.cc: ...here. * lto.c: Moved to... * lto.cc: ...here. gcc/objc/ChangeLog: * objc-act.c: Moved to... * objc-act.cc: ...here. * objc-encoding.c: Moved to... * objc-encoding.cc: ...here. * objc-gnu-runtime-abi-01.c: Moved to... * objc-gnu-runtime-abi-01.cc: ...here. * objc-lang.c: Moved to... * objc-lang.cc: ...here. * objc-map.c: Moved to... * objc-map.cc: ...here. * objc-next-runtime-abi-01.c: Moved to... * objc-next-runtime-abi-01.cc: ...here. * objc-next-runtime-abi-02.c: Moved to... * objc-next-runtime-abi-02.cc: ...here. * objc-runtime-shared-support.c: Moved to... * objc-runtime-shared-support.cc: ...here. gcc/objcp/ChangeLog: * objcp-decl.c: Moved to... * objcp-decl.cc: ...here. * objcp-lang.c: Moved to... * objcp-lang.cc: ...here. libcpp/ChangeLog: * charset.c: Moved to... * charset.cc: ...here. * directives.c: Moved to... * directives.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * files.c: Moved to... * files.cc: ...here. * identifiers.c: Moved to... * identifiers.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * line-map.c: Moved to... * line-map.cc: ...here. * macro.c: Moved to... * macro.cc: ...here. * makeucnid.c: Moved to... * makeucnid.cc: ...here. * mkdeps.c: Moved to... * mkdeps.cc: ...here. * pch.c: Moved to... * pch.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * traditional.c: Moved to... * traditional.cc: ...here.
Diffstat (limited to 'gcc/cp/vtable-class-hierarchy.c')
-rw-r--r--gcc/cp/vtable-class-hierarchy.c1346
1 files changed, 0 insertions, 1346 deletions
diff --git a/gcc/cp/vtable-class-hierarchy.c b/gcc/cp/vtable-class-hierarchy.c
deleted file mode 100644
index 4c6e2f2..0000000
--- a/gcc/cp/vtable-class-hierarchy.c
+++ /dev/null
@@ -1,1346 +0,0 @@
-/* Copyright (C) 2012-2022 Free Software Foundation, Inc.
-
- This file is part of GCC.
-
- GCC is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3, or (at your option)
- any later version.
-
- GCC is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING3. If not see
-<http://www.gnu.org/licenses/>. */
-
-/* Virtual Table Pointer Security Pass - Detect corruption of vtable pointers
- before using them for virtual method dispatches. */
-
-/* This file is part of the vtable security feature implementation.
- The vtable security feature is designed to detect when a virtual
- call is about to be made through an invalid vtable pointer
- (possibly due to data corruption or malicious attacks). The
- compiler finds every virtual call, and inserts a verification call
- before the virtual call. The verification call takes the actual
- vtable pointer value in the object through which the virtual call
- is being made, and compares the vtable pointer against a set of all
- valid vtable pointers that the object could contain (this set is
- based on the declared type of the object). If the pointer is in
- the valid set, execution is allowed to continue; otherwise the
- program is halted.
-
- There are several pieces needed in order to make this work: 1. For
- every virtual class in the program (i.e. a class that contains
- virtual methods), we need to build the set of all possible valid
- vtables that an object of that class could point to. This includes
- vtables for any class(es) that inherit from the class under
- consideration. 2. For every such data set we build up, we need a
- way to find and reference the data set. This is complicated by the
- fact that the real vtable addresses are not known until runtime,
- when the program is loaded into memory, but we need to reference the
- sets at compile time when we are inserting verification calls into
- the program. 3. We need to find every virtual call in the program,
- and insert the verification call (with the appropriate arguments)
- before the virtual call. 4. We need some runtime library pieces:
- the code to build up the data sets at runtime; the code to actually
- perform the verification using the data sets; and some code to set
- protections on the data sets, so they themselves do not become
- hacker targets.
-
- To find and reference the set of valid vtable pointers for any given
- virtual class, we create a special global varible for each virtual
- class. We refer to this as the "vtable map variable" for that
- class. The vtable map variable has the type "void *", and is
- initialized by the compiler to NULL. At runtime when the set of
- valid vtable pointers for a virtual class, e.g. class Foo, is built,
- the vtable map variable for class Foo is made to point to the set.
- During compile time, when the compiler is inserting verification
- calls into the program, it passes the vtable map variable for the
- appropriate class to the verification call, so that at runtime the
- verification call can find the appropriate data set.
-
- The actual set of valid vtable pointers for a virtual class,
- e.g. class Foo, cannot be built until runtime, when the vtables get
- loaded into memory and their addresses are known. But the knowledge
- about which vtables belong in which class' hierarchy is only known
- at compile time. Therefore at compile time we collect class
- hierarchy and vtable information about every virtual class, and we
- generate calls to build up the data sets at runtime. To build the
- data sets, we call one of the functions we add to the runtime
- library, __VLTRegisterPair. __VLTRegisterPair takes two arguments,
- a vtable map variable and the address of a vtable. If the vtable
- map variable is currently NULL, it creates a new data set (hash
- table), makes the vtable map variable point to the new data set, and
- inserts the vtable address into the data set. If the vtable map
- variable is not NULL, it just inserts the vtable address into the
- data set. In order to make sure that our data sets are built before
- any verification calls happen, we create a special constructor
- initialization function for each compilation unit, give it a very
- high initialization priority, and insert all of our calls to
- __VLTRegisterPair into our special constructor initialization
- function.
-
- The vtable verification feature is controlled by the flag
- '-fvtable-verify='. There are three flavors of this:
- '-fvtable-verify=std', '-fvtable-verify=preinit', and
- '-fvtable-verify=none'. If the option '-fvtable-verfy=preinit' is
- used, then our constructor initialization function gets put into the
- preinit array. This is necessary if there are data sets that need
- to be built very early in execution. If the constructor
- initialization function gets put into the preinit array, the we also
- add calls to __VLTChangePermission at the beginning and end of the
- function. The call at the beginning sets the permissions on the
- data sets and vtable map variables to read/write, and the one at the
- end makes them read-only. If the '-fvtable-verify=std' option is
- used, the constructor initialization functions are executed at their
- normal time, and the __VLTChangePermission calls are handled
- differently (see the comments in libstdc++-v3/libsupc++/vtv_rts.cc).
- The option '-fvtable-verify=none' turns off vtable verification.
-
- This file contains code to find and record the class hierarchies for
- the virtual classes in a program, and all the vtables associated
- with each such class; to generate the vtable map variables; and to
- generate the constructor initialization function (with the calls to
- __VLTRegisterPair, and __VLTChangePermission). The main data
- structures used for collecting the class hierarchy data and
- building/maintaining the vtable map variable data are defined in
- gcc/vtable-verify.h, because they are used both here and in
- gcc/vtable-verify.c. */
-
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "vtable-verify.h"
-#include "cp-tree.h"
-#include "stringpool.h"
-#include "cgraph.h"
-#include "output.h"
-#include "tree-iterator.h"
-#include "gimplify.h"
-#include "stor-layout.h"
-
-static int num_calls_to_regset = 0;
-static int num_calls_to_regpair = 0;
-static int current_set_size;
-
-/* Mark these specially since they need to be stored in precompiled
- header IR. */
-static GTY (()) vec<tree, va_gc> *vlt_saved_class_info;
-static GTY (()) tree vlt_register_pairs_fndecl = NULL_TREE;
-static GTY (()) tree vlt_register_set_fndecl = NULL_TREE;
-
-struct work_node {
- struct vtv_graph_node *node;
- struct work_node *next;
-};
-
-struct vtbl_map_node *vtable_find_or_create_map_decl (tree);
-
-/* As part of vtable verification the compiler generates and inserts
- calls to __VLTVerifyVtablePointer, which is in libstdc++. This
- function builds and initializes the function decl that is used
- in generating those function calls.
-
- In addition to __VLTVerifyVtablePointer there is also
- __VLTVerifyVtablePointerDebug which can be used in place of
- __VLTVerifyVtablePointer, and which takes extra parameters and
- outputs extra information, to help debug problems. The debug
- version of this function is generated and used if flag_vtv_debug is
- true.
-
- The signatures for these functions are:
-
- void * __VLTVerifyVtablePointer (void **, void*);
- void * __VLTVerifyVtablePointerDebug (void**, void *, char *, char *);
-*/
-
-void
-vtv_build_vtable_verify_fndecl (void)
-{
- tree func_type = NULL_TREE;
-
- if (verify_vtbl_ptr_fndecl != NULL_TREE
- && TREE_CODE (verify_vtbl_ptr_fndecl) != ERROR_MARK)
- return;
-
- if (flag_vtv_debug)
- {
- func_type = build_function_type_list (const_ptr_type_node,
- build_pointer_type (ptr_type_node),
- const_ptr_type_node,
- const_string_type_node,
- const_string_type_node,
- NULL_TREE);
- verify_vtbl_ptr_fndecl =
- build_lang_decl (FUNCTION_DECL,
- get_identifier ("__VLTVerifyVtablePointerDebug"),
- func_type);
- }
- else
- {
- func_type = build_function_type_list (const_ptr_type_node,
- build_pointer_type (ptr_type_node),
- const_ptr_type_node,
- NULL_TREE);
- verify_vtbl_ptr_fndecl =
- build_lang_decl (FUNCTION_DECL,
- get_identifier ("__VLTVerifyVtablePointer"),
- func_type);
- }
-
- TREE_NOTHROW (verify_vtbl_ptr_fndecl) = 1;
- DECL_ATTRIBUTES (verify_vtbl_ptr_fndecl)
- = tree_cons (get_identifier ("leaf"), NULL,
- DECL_ATTRIBUTES (verify_vtbl_ptr_fndecl));
- DECL_PURE_P (verify_vtbl_ptr_fndecl) = 1;
- TREE_PUBLIC (verify_vtbl_ptr_fndecl) = 1;
- DECL_PRESERVE_P (verify_vtbl_ptr_fndecl) = 1;
-}
-
-/* As part of vtable verification the compiler generates and inserts
- calls to __VLTRegisterSet and __VLTRegisterPair, which are in
- libsupc++. This function builds and initializes the function decls
- that are used in generating those function calls.
-
- The signatures for these functions are:
-
- void __VLTRegisterSetDebug (void **, const void *, std::size_t,
- size_t, void **);
-
- void __VLTRegisterSet (void **, const void *, std::size_t,
- size_t, void **);
-
- void __VLTRegisterPairDebug (void **, const void *, size_t,
- const void *, const char *, const char *);
-
- void __VLTRegisterPair (void **, const void *, size_t, const void *);
-*/
-
-static void
-init_functions (void)
-{
- tree register_set_type;
- tree register_pairs_type;
-
- if (vlt_register_set_fndecl != NULL_TREE)
- return;
-
- gcc_assert (vlt_register_pairs_fndecl == NULL_TREE);
- gcc_assert (vlt_register_set_fndecl == NULL_TREE);
-
- /* Build function decl for __VLTRegisterSet*. */
-
- register_set_type = build_function_type_list
- (void_type_node,
- build_pointer_type (ptr_type_node),
- const_ptr_type_node,
- size_type_node,
- size_type_node,
- build_pointer_type (ptr_type_node),
- NULL_TREE);
-
- if (flag_vtv_debug)
- vlt_register_set_fndecl = build_lang_decl
- (FUNCTION_DECL,
- get_identifier ("__VLTRegisterSetDebug"),
- register_set_type);
- else
- vlt_register_set_fndecl = build_lang_decl
- (FUNCTION_DECL,
- get_identifier ("__VLTRegisterSet"),
- register_set_type);
-
-
- TREE_NOTHROW (vlt_register_set_fndecl) = 1;
- DECL_ATTRIBUTES (vlt_register_set_fndecl) =
- tree_cons (get_identifier ("leaf"), NULL,
- DECL_ATTRIBUTES (vlt_register_set_fndecl));
- DECL_EXTERNAL(vlt_register_set_fndecl) = 1;
- TREE_PUBLIC (vlt_register_set_fndecl) = 1;
- DECL_PRESERVE_P (vlt_register_set_fndecl) = 1;
- SET_DECL_LANGUAGE (vlt_register_set_fndecl, lang_cplusplus);
-
- /* Build function decl for __VLTRegisterPair*. */
-
- if (flag_vtv_debug)
- {
- register_pairs_type = build_function_type_list (void_type_node,
- build_pointer_type
- (ptr_type_node),
- const_ptr_type_node,
- size_type_node,
- const_ptr_type_node,
- const_string_type_node,
- const_string_type_node,
- NULL_TREE);
-
- vlt_register_pairs_fndecl = build_lang_decl
- (FUNCTION_DECL,
- get_identifier ("__VLTRegisterPairDebug"),
- register_pairs_type);
- }
- else
- {
- register_pairs_type = build_function_type_list (void_type_node,
- build_pointer_type
- (ptr_type_node),
- const_ptr_type_node,
- size_type_node,
- const_ptr_type_node,
- NULL_TREE);
-
- vlt_register_pairs_fndecl = build_lang_decl
- (FUNCTION_DECL,
- get_identifier ("__VLTRegisterPair"),
- register_pairs_type);
- }
-
- TREE_NOTHROW (vlt_register_pairs_fndecl) = 1;
- DECL_ATTRIBUTES (vlt_register_pairs_fndecl) =
- tree_cons (get_identifier ("leaf"), NULL,
- DECL_ATTRIBUTES (vlt_register_pairs_fndecl));
- DECL_EXTERNAL(vlt_register_pairs_fndecl) = 1;
- TREE_PUBLIC (vlt_register_pairs_fndecl) = 1;
- DECL_PRESERVE_P (vlt_register_pairs_fndecl) = 1;
- SET_DECL_LANGUAGE (vlt_register_pairs_fndecl, lang_cplusplus);
-
-}
-
-/* This is a helper function for
- vtv_compute_class_hierarchy_transitive_closure. It adds a
- vtv_graph_node to the WORKLIST, which is a linked list of
- seen-but-not-yet-processed nodes. INSERTED is a bitmap, one bit
- per node, to help make sure that we don't insert a node into the
- worklist more than once. Each node represents a class somewhere in
- our class hierarchy information. Every node in the graph gets added
- to the worklist exactly once and removed from the worklist exactly
- once (when all of its children have been processed). */
-
-static void
-add_to_worklist (struct work_node **worklist, struct vtv_graph_node *node,
- sbitmap inserted)
-{
- struct work_node *new_work_node;
-
- if (bitmap_bit_p (inserted, node->class_uid))
- return;
-
- new_work_node = XNEW (struct work_node);
- new_work_node->next = *worklist;
- new_work_node->node = node;
- *worklist = new_work_node;
-
- bitmap_set_bit (inserted, node->class_uid);
-}
-
-/* This is a helper function for
- vtv_compute_class_hierarchy_transitive_closure. It goes through
- the WORKLIST of class hierarchy nodes looking for a "leaf" node,
- i.e. a node whose children in the hierarchy have all been
- processed. When it finds the next leaf node, it removes it from
- the linked list (WORKLIST) and returns the node. */
-
-static struct vtv_graph_node *
-find_and_remove_next_leaf_node (struct work_node **worklist)
-{
- struct work_node *prev, *cur;
- struct vtv_graph_node *ret_val = NULL;
-
- for (prev = NULL, cur = *worklist; cur; prev = cur, cur = cur->next)
- {
- if ((cur->node->children).length() == cur->node->num_processed_children)
- {
- if (prev == NULL)
- (*worklist) = cur->next;
- else
- prev->next = cur->next;
-
- cur->next = NULL;
- ret_val = cur->node;
- free (cur);
- return ret_val;
- }
- }
-
- return NULL;
-}
-
-/* In our class hierarchy graph, each class node contains a bitmap,
- with one bit for each class in the hierarchy. The bits are set for
- classes that are descendants in the graph of the current node.
- Initially the descendants bitmap is only set for immediate
- descendants. This function traverses the class hierarchy graph,
- bottom up, filling in the transitive closures for the descendants
- as we rise up the graph. */
-
-void
-vtv_compute_class_hierarchy_transitive_closure (void)
-{
- struct work_node *worklist = NULL;
- sbitmap inserted = sbitmap_alloc (num_vtable_map_nodes);
- unsigned i;
- unsigned j;
-
- /* Note: Every node in the graph gets added to the worklist exactly
- once and removed from the worklist exactly once (when all of its
- children have been processed). Each node's children edges are
- followed exactly once, and each node's parent edges are followed
- exactly once. So this algorithm is roughly O(V + 2E), i.e.
- O(E + V). */
-
- /* Set-up: */
- /* Find all the "leaf" nodes in the graph, and add them to the worklist. */
- bitmap_clear (inserted);
- for (j = 0; j < num_vtable_map_nodes; ++j)
- {
- struct vtbl_map_node *cur = vtbl_map_nodes_vec[j];
- if (cur->class_info
- && ((cur->class_info->children).length() == 0)
- && ! (bitmap_bit_p (inserted, cur->class_info->class_uid)))
- add_to_worklist (&worklist, cur->class_info, inserted);
- }
-
- /* Main work: pull next leaf node off work list, process it, add its
- parents to the worklist, where a 'leaf' node is one that has no
- children, or all of its children have been processed. */
- while (worklist)
- {
- struct vtv_graph_node *temp_node =
- find_and_remove_next_leaf_node (&worklist);
-
- gcc_assert (temp_node != NULL);
- temp_node->descendants = sbitmap_alloc (num_vtable_map_nodes);
- bitmap_clear (temp_node->descendants);
- bitmap_set_bit (temp_node->descendants, temp_node->class_uid);
- for (i = 0; i < (temp_node->children).length(); ++i)
- bitmap_ior (temp_node->descendants, temp_node->descendants,
- temp_node->children[i]->descendants);
- for (i = 0; i < (temp_node->parents).length(); ++i)
- {
- temp_node->parents[i]->num_processed_children =
- temp_node->parents[i]->num_processed_children + 1;
- if (!bitmap_bit_p (inserted, temp_node->parents[i]->class_uid))
- add_to_worklist (&worklist, temp_node->parents[i], inserted);
- }
- }
-}
-
-/* Keep track of which pairs we have already created __VLTRegisterPair
- calls for, to prevent creating duplicate calls within the same
- compilation unit. VTABLE_DECL is the var decl for the vtable of
- the (descendant) class that we are adding to our class hierarchy
- data. VPTR_ADDRESS is an expression for calculating the correct
- offset into the vtable (VTABLE_DECL). It is the actual vtable
- pointer address that will be stored in our list of valid vtable
- pointers for BASE_CLASS. BASE_CLASS is the record_type node for
- the base class to whose hiearchy we want to add
- VPTR_ADDRESS. (VTABLE_DECL should be the vtable for BASE_CLASS or
- one of BASE_CLASS' descendents. */
-
-static bool
-check_and_record_registered_pairs (tree vtable_decl, tree vptr_address,
- tree base_class)
-{
- unsigned offset;
- struct vtbl_map_node *base_vtable_map_node;
- bool inserted_something = false;
-
-
- if (TREE_CODE (vptr_address) == ADDR_EXPR
- && TREE_CODE (TREE_OPERAND (vptr_address, 0)) == MEM_REF)
- vptr_address = TREE_OPERAND (vptr_address, 0);
-
- if (TREE_OPERAND_LENGTH (vptr_address) > 1)
- offset = TREE_INT_CST_LOW (TREE_OPERAND (vptr_address, 1));
- else
- offset = 0;
-
- base_vtable_map_node = vtbl_map_get_node (TYPE_MAIN_VARIANT (base_class));
-
- inserted_something = vtbl_map_node_registration_insert
- (base_vtable_map_node,
- vtable_decl,
- offset);
- return !inserted_something;
-}
-
-/* Given an IDENTIFIER_NODE, build and return a string literal based on it. */
-
-static tree
-build_string_from_id (tree identifier)
-{
- int len;
-
- gcc_assert (TREE_CODE (identifier) == IDENTIFIER_NODE);
-
- len = IDENTIFIER_LENGTH (identifier);
- return build_string_literal (len + 1, IDENTIFIER_POINTER (identifier));
-}
-
-/* A class may contain secondary vtables in it, for various reasons.
- This function goes through the decl chain of a class record looking
- for any fields that point to secondary vtables, and adding calls to
- __VLTRegisterPair for the secondary vtable pointers.
-
- BASE_CLASS_DECL_ARG is an expression for the address of the vtable
- map variable for the BASE_CLASS (whose hierarchy we are currently
- updating). BASE_CLASS is the record_type node for the base class.
- RECORD_TYPE is the record_type node for the descendant class that
- we are possibly adding to BASE_CLASS's hierarchy. BODY is the
- function body for the constructor init function to which we are
- adding our calls to __VLTRegisterPair. */
-
-static void
-register_construction_vtables (tree base_class, tree record_type,
- vec<tree> *vtable_ptr_array)
-{
- tree vtbl_var_decl;
-
- if (TREE_CODE (record_type) != RECORD_TYPE)
- return;
-
- vtbl_var_decl = CLASSTYPE_VTABLES (record_type);
-
- if (CLASSTYPE_VBASECLASSES (record_type))
- {
- tree vtt_decl;
- bool already_registered = false;
- tree val_vtbl_decl = NULL_TREE;
-
- vtt_decl = DECL_CHAIN (vtbl_var_decl);
-
- /* Check to see if we have found a VTT. Add its data if appropriate. */
- if (vtt_decl)
- {
- tree values = DECL_INITIAL (vtt_decl);
- if (TREE_ASM_WRITTEN (vtt_decl)
- && values != NULL_TREE
- && TREE_CODE (values) == CONSTRUCTOR
- && TREE_CODE (TREE_TYPE (values)) == ARRAY_TYPE)
- {
- unsigned HOST_WIDE_INT cnt;
- constructor_elt *ce;
-
- /* Loop through the initialization values for this
- vtable to get all the correct vtable pointer
- addresses that we need to add to our set of valid
- vtable pointers for the current base class. This may
- result in adding more than just the element assigned
- to the primary vptr of the class, so we may end up
- with more vtable pointers than are strictly
- necessary. */
-
- for (cnt = 0;
- vec_safe_iterate (CONSTRUCTOR_ELTS (values),
- cnt, &ce);
- cnt++)
- {
- tree value = ce->value;
-
- /* Search for the ADDR_EXPR operand within the value. */
-
- while (value
- && TREE_OPERAND (value, 0)
- && TREE_CODE (TREE_OPERAND (value, 0)) == ADDR_EXPR)
- value = TREE_OPERAND (value, 0);
-
- /* The VAR_DECL for the vtable should be the first
- argument of the ADDR_EXPR, which is the first
- argument of value.*/
-
- if (TREE_OPERAND (value, 0))
- val_vtbl_decl = TREE_OPERAND (value, 0);
-
- while (!VAR_P (val_vtbl_decl)
- && TREE_OPERAND (val_vtbl_decl, 0))
- val_vtbl_decl = TREE_OPERAND (val_vtbl_decl, 0);
-
- gcc_assert (VAR_P (val_vtbl_decl));
-
- /* Check to see if we already have this vtable pointer in
- our valid set for this base class. */
-
- already_registered = check_and_record_registered_pairs
- (val_vtbl_decl,
- value,
- base_class);
-
- if (already_registered)
- continue;
-
- /* Add this vtable pointer to our set of valid
- pointers for the base class. */
-
- vtable_ptr_array->safe_push (value);
- current_set_size++;
- }
- }
- }
- }
-}
-
-/* This function iterates through all the vtables it can find from the
- BINFO of a class, to make sure we have found ALL of the vtables
- that an object of that class could point to. Generate calls to
- __VLTRegisterPair for those vtable pointers that we find.
-
- BINFO is the tree_binfo node for the BASE_CLASS. BODY is the
- function body for the constructor init function to which we are
- adding calls to __VLTRegisterPair. ARG1 is an expression for the
- address of the vtable map variable (for the BASE_CLASS), that will
- point to the updated data set. BASE_CLASS is the record_type node
- for the base class whose set of valid vtable pointers we are
- updating. STR1 and STR2 are all debugging information, to be passed
- as parameters to __VLTRegisterPairDebug. STR1 represents the name
- of the vtable map variable to be updated by the call. Similarly,
- STR2 represents the name of the class whose vtable pointer is being
- added to the hierarchy. */
-
-static void
-register_other_binfo_vtables (tree binfo, tree base_class,
- vec<tree> *vtable_ptr_array)
-{
- unsigned ix;
- tree base_binfo;
- tree vtable_decl;
- bool already_registered;
-
- if (binfo == NULL_TREE)
- return;
-
- for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++)
- {
- if ((!BINFO_PRIMARY_P (base_binfo)
- || BINFO_VIRTUAL_P (base_binfo))
- && (vtable_decl = get_vtbl_decl_for_binfo (base_binfo)))
- {
- tree vtable_address = build_vtbl_address (base_binfo);
-
- already_registered = check_and_record_registered_pairs
- (vtable_decl,
- vtable_address,
- base_class);
- if (!already_registered)
- {
- vtable_ptr_array->safe_push (vtable_address);
- current_set_size++;
- }
- }
-
- register_other_binfo_vtables (base_binfo, base_class, vtable_ptr_array);
- }
-}
-
-/* The set of valid vtable pointers for any given class are stored in
- a hash table. For reasons of efficiency, that hash table size is
- always a power of two. In order to try to prevent re-sizing the
- hash tables very often, we pass __VLTRegisterPair an initial guess
- as to the number of entries the hashtable will eventually need
- (rounded up to the nearest power of two). This function takes the
- class information we have collected for a particular class,
- CLASS_NODE, and calculates the hash table size guess. */
-
-static int
-guess_num_vtable_pointers (struct vtv_graph_node *class_node)
-{
- tree vtbl;
- int total_num_vtbls = 0;
- int num_vtbls_power_of_two = 1;
- unsigned i;
-
- for (i = 0; i < num_vtable_map_nodes; ++i)
- if (bitmap_bit_p (class_node->descendants, i))
- {
- tree class_type = vtbl_map_nodes_vec[i]->class_info->class_type;
- for (vtbl = CLASSTYPE_VTABLES (class_type); vtbl;
- vtbl = DECL_CHAIN (vtbl))
- {
- total_num_vtbls++;
- if (total_num_vtbls > num_vtbls_power_of_two)
- num_vtbls_power_of_two <<= 1;
- }
- }
- return num_vtbls_power_of_two;
-}
-
-/* A simple hash function on strings */
-/* Be careful about changing this routine. The values generated will
- be stored in the calls to InitSet. So, changing this routine may
- cause a binary incompatibility. */
-
-static uint32_t
-vtv_string_hash (const char *in)
-{
- const char *s = in;
- uint32_t h = 0;
-
- gcc_assert (in != NULL);
- for ( ; *s; ++s)
- h = 5 * h + *s;
- return h;
-}
-
-static char *
-get_log_file_name (const char *fname)
-{
- const char *tmp_dir = concat (dump_dir_name, NULL);
- char *full_name;
- int dir_len;
- int fname_len;
-
- dir_len = strlen (tmp_dir);
- fname_len = strlen (fname);
-
- full_name = XNEWVEC (char, dir_len + fname_len + 1);
- strcpy (full_name, tmp_dir);
- strcpy (full_name + dir_len, fname);
-
- return full_name;
-}
-
-static void
-write_out_current_set_data (tree base_class, int set_size)
-{
- static int class_data_log_fd = -1;
- char buffer[1024];
- int bytes_written __attribute__ ((unused));
- char *file_name = get_log_file_name ("vtv_class_set_sizes.log");
-
- if (class_data_log_fd == -1)
- class_data_log_fd = open (file_name,
- O_WRONLY | O_APPEND | O_CREAT, S_IRWXU);
-
- if (class_data_log_fd == -1)
- {
- warning_at (UNKNOWN_LOCATION, 0,
- "unable to open log file %<vtv_class_set_sizes.log%>: %m");
- return;
- }
-
- snprintf (buffer, sizeof (buffer), "%s %d\n",
- IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (TYPE_NAME (base_class))),
- set_size);
- bytes_written = write (class_data_log_fd, buffer, strlen (buffer));
-}
-
-static tree
-build_key_buffer_arg (tree base_ptr_var_decl)
-{
- const int key_type_fixed_size = 8;
- uint32_t len1 = IDENTIFIER_LENGTH (DECL_NAME (base_ptr_var_decl));
- uint32_t hash_value = vtv_string_hash (IDENTIFIER_POINTER
- (DECL_NAME (base_ptr_var_decl)));
- void *key_buffer = xmalloc (len1 + key_type_fixed_size);
- uint32_t *value_ptr = (uint32_t *) key_buffer;
- tree ret_value;
-
- /* Set the len and hash for the string. */
- *value_ptr = len1;
- value_ptr++;
- *value_ptr = hash_value;
-
- /* Now copy the string representation of the vtbl map name... */
- memcpy ((char *) key_buffer + key_type_fixed_size,
- IDENTIFIER_POINTER (DECL_NAME (base_ptr_var_decl)),
- len1);
-
- /* ... and build a string literal from it. This will make a copy
- so the key_bufffer is not needed anymore after this. */
- ret_value = build_string_literal (len1 + key_type_fixed_size,
- (char *) key_buffer);
- free (key_buffer);
- return ret_value;
-}
-
-static void
-insert_call_to_register_set (tree class_name,
- vec<tree> *vtbl_ptr_array, tree body, tree arg1,
- tree arg2, tree size_hint_arg)
-{
- tree call_expr;
- int num_args = vtbl_ptr_array->length();
- char *array_arg_name = ACONCAT (("__vptr_array_",
- IDENTIFIER_POINTER (class_name), NULL));
- tree array_arg_type = build_array_type_nelts (build_pointer_type
- (build_pointer_type
- (void_type_node)),
- num_args);
- tree array_arg = build_decl (UNKNOWN_LOCATION, VAR_DECL,
- get_identifier (array_arg_name),
- array_arg_type);
- int k;
-
- vec<constructor_elt, va_gc> *array_elements;
- vec_alloc (array_elements, num_args);
-
- tree initial = NULL_TREE;
- tree arg3 = NULL_TREE;
-
- TREE_PUBLIC (array_arg) = 0;
- DECL_EXTERNAL (array_arg) = 0;
- TREE_STATIC (array_arg) = 1;
- DECL_ARTIFICIAL (array_arg) = 0;
- TREE_READONLY (array_arg) = 1;
- DECL_IGNORED_P (array_arg) = 0;
- DECL_PRESERVE_P (array_arg) = 0;
- DECL_VISIBILITY (array_arg) = VISIBILITY_HIDDEN;
-
- for (k = 0; k < num_args; ++k)
- {
- CONSTRUCTOR_APPEND_ELT (array_elements, NULL_TREE, (*vtbl_ptr_array)[k]);
- }
-
- initial = build_constructor (TREE_TYPE (array_arg), array_elements);
-
- TREE_CONSTANT (initial) = 1;
- TREE_STATIC (initial) = 1;
- DECL_INITIAL (array_arg) = initial;
- relayout_decl (array_arg);
- varpool_node::finalize_decl (array_arg);
-
- arg3 = build1 (ADDR_EXPR, TYPE_POINTER_TO (TREE_TYPE (array_arg)), array_arg);
-
- TREE_TYPE (arg3) = build_pointer_type (TREE_TYPE (array_arg));
-
- call_expr = build_call_expr (vlt_register_set_fndecl, 5, arg1,
- arg2, /* set_symbol_key */
- size_hint_arg, build_int_cst (size_type_node,
- num_args),
- arg3);
- append_to_statement_list (call_expr, &body);
- num_calls_to_regset++;
-}
-
-static void
-insert_call_to_register_pair (vec<tree> *vtbl_ptr_array, tree arg1,
- tree arg2, tree size_hint_arg, tree str1,
- tree str2, tree body)
-{
- tree call_expr;
- int num_args = vtbl_ptr_array->length();
- tree vtable_address = NULL_TREE;
-
- if (num_args == 0)
- vtable_address = build_int_cst (build_pointer_type (void_type_node), 0);
- else
- vtable_address = (*vtbl_ptr_array)[0];
-
- if (flag_vtv_debug)
- call_expr = build_call_expr (vlt_register_pairs_fndecl, 6, arg1, arg2,
- size_hint_arg, vtable_address, str1, str2);
- else
- call_expr = build_call_expr (vlt_register_pairs_fndecl, 4, arg1, arg2,
- size_hint_arg, vtable_address);
-
- append_to_statement_list (call_expr, &body);
- num_calls_to_regpair++;
-}
-
-static void
-output_set_info (tree record_type, vec<tree> vtbl_ptr_array)
-{
- static int vtv_debug_log_fd = -1;
- char buffer[1024];
- int bytes_written __attribute__ ((unused));
- int array_len = vtbl_ptr_array.length();
- const char *class_name =
- IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (TYPE_NAME (record_type)));
- char *file_name = get_log_file_name ("vtv_set_ptr_data.log");
-
- if (vtv_debug_log_fd == -1)
- vtv_debug_log_fd = open (file_name,
- O_WRONLY | O_APPEND | O_CREAT, S_IRWXU);
- if (vtv_debug_log_fd == -1)
- {
- warning_at (UNKNOWN_LOCATION, 0,
- "unable to open log file %<vtv_set_ptr_data.log%>: %m");
- return;
- }
-
- for (int i = 0; i < array_len; ++i)
- {
- const char *vptr_name = "unknown";
- int vptr_offset = 0;
-
- if (TREE_CODE (vtbl_ptr_array[i]) == POINTER_PLUS_EXPR)
- {
- tree arg0 = TREE_OPERAND (vtbl_ptr_array[i], 0);
- tree arg1 = TREE_OPERAND (vtbl_ptr_array[i], 1);
-
- if (TREE_CODE (arg0) == ADDR_EXPR)
- arg0 = TREE_OPERAND (arg0, 0);
-
- if (VAR_P (arg0))
- vptr_name = IDENTIFIER_POINTER (DECL_NAME (arg0));
-
- if (TREE_CODE (arg1) == INTEGER_CST)
- vptr_offset = TREE_INT_CST_LOW (arg1);
- }
-
- snprintf (buffer, sizeof (buffer), "%s %s %s + %d\n",
- main_input_filename, class_name, vptr_name, vptr_offset);
- bytes_written = write (vtv_debug_log_fd, buffer, strlen(buffer));
- }
-
-}
-
-/* This function goes through our internal class hierarchy & vtable
- pointer data structure and outputs calls to __VLTRegisterPair for
- every class-vptr pair (for those classes whose vtable would be
- output in the current compilation unit). These calls get put into
- our constructor initialization function. BODY is the function
- body, so far, of our constructor initialization function, to which we
- add the calls. */
-
-static bool
-register_all_pairs (tree body)
-{
- bool registered_at_least_one = false;
- vec<tree> *vtbl_ptr_array = NULL;
- unsigned j;
-
- for (j = 0; j < num_vtable_map_nodes; ++j)
- {
- struct vtbl_map_node *current = vtbl_map_nodes_vec[j];
- unsigned i = 0;
- tree base_class = current->class_info->class_type;
- tree base_ptr_var_decl = current->vtbl_map_decl;
- tree arg1;
- tree arg2;
- tree new_type;
- tree str1 = NULL_TREE;
- tree str2 = NULL_TREE;
- size_t size_hint;
- tree size_hint_arg;
-
- gcc_assert (current->class_info != NULL);
-
-
- if (flag_vtv_debug)
- str1 = build_string_from_id (DECL_NAME (base_ptr_var_decl));
-
- new_type = build_pointer_type (TREE_TYPE (base_ptr_var_decl));
- arg1 = build1 (ADDR_EXPR, new_type, base_ptr_var_decl);
-
- /* We need a fresh vector for each iteration. */
- if (vtbl_ptr_array)
- vec_free (vtbl_ptr_array);
-
- vec_alloc (vtbl_ptr_array, 10);
-
- for (i = 0; i < num_vtable_map_nodes; ++i)
- if (bitmap_bit_p (current->class_info->descendants, i))
- {
- struct vtbl_map_node *vtbl_class_node = vtbl_map_nodes_vec[i];
- tree class_type = vtbl_class_node->class_info->class_type;
-
- if (class_type
- && (TREE_CODE (class_type) == RECORD_TYPE))
- {
- bool already_registered;
-
- tree binfo = TYPE_BINFO (class_type);
- tree vtable_decl;
- bool vtable_should_be_output = false;
-
- vtable_decl = CLASSTYPE_VTABLES (class_type);
-
- /* Handle main vtable for this class. */
-
- if (vtable_decl)
- {
- vtable_should_be_output = TREE_ASM_WRITTEN (vtable_decl);
- str2 = build_string_from_id (DECL_NAME (vtable_decl));
- }
-
- if (vtable_decl && vtable_should_be_output)
- {
- tree vtable_address = build_vtbl_address (binfo);
-
- already_registered = check_and_record_registered_pairs
- (vtable_decl,
- vtable_address,
- base_class);
-
-
- if (!already_registered)
- {
- vtbl_ptr_array->safe_push (vtable_address);
-
- /* Find and handle any 'extra' vtables associated
- with this class, via virtual inheritance. */
- register_construction_vtables (base_class, class_type,
- vtbl_ptr_array);
-
- /* Find and handle any 'extra' vtables associated
- with this class, via multiple inheritance. */
- register_other_binfo_vtables (binfo, base_class,
- vtbl_ptr_array);
- }
- }
- }
- }
- current_set_size = vtbl_ptr_array->length();
-
- /* Sometimes we need to initialize the set symbol even if we are
- not adding any vtable pointers to the set in the current
- compilation unit. In that case, we need to initialize the
- set to our best guess as to what the eventual size of the set
- hash table will be (to prevent having to re-size the hash
- table later). */
-
- size_hint = guess_num_vtable_pointers (current->class_info);
-
- /* If we have added vtable pointers to the set in this
- compilation unit, adjust the size hint for the set's hash
- table appropriately. */
- if (vtbl_ptr_array->length() > 0)
- {
- unsigned len = vtbl_ptr_array->length();
- while ((size_t) len > size_hint)
- size_hint <<= 1;
- }
- size_hint_arg = build_int_cst (size_type_node, size_hint);
-
- /* Get the key-buffer argument. */
- arg2 = build_key_buffer_arg (base_ptr_var_decl);
-
- if (str2 == NULL_TREE)
- str2 = build_string_literal (strlen ("unknown") + 1,
- "unknown");
-
- if (flag_vtv_debug)
- output_set_info (current->class_info->class_type,
- *vtbl_ptr_array);
-
- if (vtbl_ptr_array->length() > 1)
- {
- insert_call_to_register_set (current->class_name,
- vtbl_ptr_array, body, arg1, arg2,
- size_hint_arg);
- registered_at_least_one = true;
- }
- else
- {
-
- if (vtbl_ptr_array->length() > 0
- || (current->is_used
- || (current->registered->size() > 0)))
- {
- insert_call_to_register_pair (vtbl_ptr_array,
- arg1, arg2, size_hint_arg, str1,
- str2, body);
- registered_at_least_one = true;
- }
- }
-
- if (flag_vtv_counts && current_set_size > 0)
- write_out_current_set_data (base_class, current_set_size);
-
- }
-
- return registered_at_least_one;
-}
-
-/* Given a tree containing a class type (CLASS_TYPE), this function
- finds and returns the class hierarchy node for that class in our
- data structure. */
-
-static struct vtv_graph_node *
-find_graph_node (tree class_type)
-{
- struct vtbl_map_node *vtbl_node;
-
- vtbl_node = vtbl_map_get_node (TYPE_MAIN_VARIANT (class_type));
- if (vtbl_node)
- return vtbl_node->class_info;
-
- return NULL;
-}
-
-/* Add base class/derived class pair to our internal class hierarchy
- data structure. BASE_NODE is our vtv_graph_node that corresponds
- to a base class. DERIVED_NODE is our vtv_graph_node that
- corresponds to a class that is a descendant of the base class
- (possibly the base class itself). */
-
-static void
-add_hierarchy_pair (struct vtv_graph_node *base_node,
- struct vtv_graph_node *derived_node)
-{
- (base_node->children).safe_push (derived_node);
- (derived_node->parents).safe_push (base_node);
-}
-
-/* This functions adds a new base class/derived class relationship to
- our class hierarchy data structure. Both parameters are trees
- representing the class types, i.e. RECORD_TYPE trees.
- DERIVED_CLASS can be the same as BASE_CLASS. */
-
-static void
-update_class_hierarchy_information (tree base_class,
- tree derived_class)
-{
- struct vtv_graph_node *base_node = find_graph_node (base_class);
- struct vtv_graph_node *derived_node = find_graph_node (derived_class);
-
- add_hierarchy_pair (base_node, derived_node);
-}
-
-
-static void
-write_out_vtv_count_data (void)
-{
- static int vtv_count_log_fd = -1;
- char buffer[1024];
- int unused_vtbl_map_vars = 0;
- int bytes_written __attribute__ ((unused));
- char *file_name = get_log_file_name ("vtv_count_data.log");
-
- if (vtv_count_log_fd == -1)
- vtv_count_log_fd = open (file_name,
- O_WRONLY | O_APPEND | O_CREAT, S_IRWXU);
- if (vtv_count_log_fd == -1)
- {
- warning_at (UNKNOWN_LOCATION, 0,
- "unable to open log file %<vtv_count_data.log%>: %m");
- return;
- }
-
- for (unsigned i = 0; i < num_vtable_map_nodes; ++i)
- {
- struct vtbl_map_node *current = vtbl_map_nodes_vec[i];
- if (!current->is_used
- && current->registered->size() == 0)
- unused_vtbl_map_vars++;
- }
-
- snprintf (buffer, sizeof (buffer), "%s %d %d %d %d %d\n",
- main_input_filename, total_num_virtual_calls,
- total_num_verified_vcalls, num_calls_to_regset,
- num_calls_to_regpair, unused_vtbl_map_vars);
-
- bytes_written = write (vtv_count_log_fd, buffer, strlen (buffer));
-}
-
-/* This function calls register_all_pairs, which actually generates
- all the calls to __VLTRegisterPair (in the verification constructor
- init function). It also generates the calls to
- __VLTChangePermission, if the verification constructor init
- function is going into the preinit array. INIT_ROUTINE_BODY is
- the body of our constructior initialization function, to which we
- add our function calls.*/
-
-bool
-vtv_register_class_hierarchy_information (tree init_routine_body)
-{
- bool registered_something = false;
-
- init_functions ();
-
- if (num_vtable_map_nodes == 0)
- return false;
-
- /* Add class hierarchy pairs to the vtable map data structure. */
- registered_something = register_all_pairs (init_routine_body);
-
- if (flag_vtv_counts)
- write_out_vtv_count_data ();
-
- return registered_something;
-}
-
-
-/* Generate the special constructor function that calls
- __VLTChangePermission and __VLTRegisterPairs, and give it a very
- high initialization priority. */
-
-void
-vtv_generate_init_routine (void)
-{
- tree init_routine_body;
- bool vtable_classes_found = false;
-
- push_lang_context (lang_name_c);
-
- /* The priority for this init function (constructor) is carefully
- chosen so that it will happen after the calls to unprotect the
- memory used for vtable verification and before the memory is
- protected again. */
- init_routine_body = vtv_start_verification_constructor_init_function ();
-
- vtable_classes_found =
- vtv_register_class_hierarchy_information (init_routine_body);
-
- if (vtable_classes_found)
- {
- tree vtv_fndecl =
- vtv_finish_verification_constructor_init_function (init_routine_body);
- TREE_STATIC (vtv_fndecl) = 1;
- TREE_USED (vtv_fndecl) = 1;
- DECL_PRESERVE_P (vtv_fndecl) = 1;
- /* We are running too late to generate any meaningful debug information
- for this routine. */
- DECL_IGNORED_P (vtv_fndecl) = 1;
- if (flag_vtable_verify == VTV_PREINIT_PRIORITY && !TARGET_PECOFF)
- DECL_STATIC_CONSTRUCTOR (vtv_fndecl) = 0;
-
- gimplify_function_tree (vtv_fndecl);
- cgraph_node::add_new_function (vtv_fndecl, false);
-
- if (flag_vtable_verify == VTV_PREINIT_PRIORITY && !TARGET_PECOFF)
- assemble_vtv_preinit_initializer (vtv_fndecl);
-
- }
- pop_lang_context ();
-}
-
-/* This funtion takes a tree containing a class type (BASE_TYPE), and
- it either finds the existing vtbl_map_node for that class in our
- data structure, or it creates a new node and adds it to the data
- structure if there is not one for the class already. As part of
- this process it also creates the global vtable map variable for the
- class. */
-
-struct vtbl_map_node *
-vtable_find_or_create_map_decl (tree base_type)
-{
- char *var_name = NULL;
- struct vtbl_map_node *vtable_map_node = NULL;
-
- /* Verify the type has an associated vtable. */
- if (!TYPE_BINFO (base_type) || !BINFO_VTABLE (TYPE_BINFO (base_type)))
- return NULL;
-
- /* Create map lookup symbol for base class */
- var_name = get_mangled_vtable_map_var_name (base_type);
-
- /* We've already created the variable; just look it. */
- vtable_map_node = vtbl_map_get_node (TYPE_MAIN_VARIANT (base_type));
-
- if (!vtable_map_node || (vtable_map_node->vtbl_map_decl == NULL_TREE))
- {
- /* If we haven't already created the *__vtable_map global
- variable for this class, do so now, and add it to the
- varpool, to make sure it gets saved and written out. */
-
- tree var_decl = NULL;
- tree var_type = build_pointer_type (void_type_node);
- tree initial_value = integer_zero_node;
-
- var_decl = build_decl (UNKNOWN_LOCATION, VAR_DECL,
- get_identifier (var_name), var_type);
-
- DECL_EXTERNAL (var_decl) = 0;
- TREE_STATIC (var_decl) = 1;
- DECL_VISIBILITY (var_decl) = VISIBILITY_HIDDEN;
- SET_DECL_ASSEMBLER_NAME (var_decl, get_identifier (var_name));
- DECL_ARTIFICIAL (var_decl) = 1;
- /* We cannot mark this variable as read-only because we want to be
- able to write to it at runtime. */
- TREE_READONLY (var_decl) = 0;
- DECL_IGNORED_P (var_decl) = 1;
- DECL_PRESERVE_P (var_decl) = 1;
-
- /* Put these mmap variables in thr .vtable_map_vars section, so
- we can find and protect them. */
-
- set_decl_section_name (var_decl, ".vtable_map_vars");
- symtab_node::get (var_decl)->implicit_section = true;
- DECL_INITIAL (var_decl) = initial_value;
-
- comdat_linkage (var_decl);
-
- varpool_node::finalize_decl (var_decl);
- if (!vtable_map_node)
- vtable_map_node =
- find_or_create_vtbl_map_node (TYPE_MAIN_VARIANT (base_type));
- if (vtable_map_node->vtbl_map_decl == NULL_TREE)
- vtable_map_node->vtbl_map_decl = var_decl;
- }
-
- gcc_assert (vtable_map_node);
- return vtable_map_node;
-}
-
-/* This function is used to build up our class hierarchy data for a
- particular class. TYPE is the record_type tree node for the
- class. */
-
-static void
-vtv_insert_single_class_info (tree type)
-{
- if (flag_vtable_verify)
- {
- tree binfo = TYPE_BINFO (type);
- tree base_binfo;
- struct vtbl_map_node *own_map;
- int i;
-
- /* First make sure to create the map for this record type. */
- own_map = vtable_find_or_create_map_decl (type);
- if (own_map == NULL)
- return;
-
- /* Go through the list of all base classes for the current
- (derived) type, make sure the *__vtable_map global variable
- for the base class exists, and add the base class/derived
- class pair to the class hierarchy information we are
- accumulating (for vtable pointer verification). */
- for (i = 0; BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
- {
- tree tree_val = BINFO_TYPE (base_binfo);
- struct vtbl_map_node *vtable_map_node = NULL;
-
- vtable_map_node = vtable_find_or_create_map_decl (tree_val);
-
- if (vtable_map_node != NULL)
- update_class_hierarchy_information (tree_val, type);
- }
- }
-}
-
-/* This function adds classes we are interested in to a list of
- classes. RECORD is the record_type node for the class we are
- adding to the list. */
-
-void
-vtv_save_class_info (tree record)
-{
- if (!flag_vtable_verify || TREE_CODE (record) == UNION_TYPE)
- return;
-
- if (!vlt_saved_class_info)
- vec_alloc (vlt_saved_class_info, 10);
-
- gcc_assert (TREE_CODE (record) == RECORD_TYPE);
-
- vec_safe_push (vlt_saved_class_info, record);
-}
-
-
-/* This function goes through the list of classes we saved and calls
- vtv_insert_single_class_info on each one, to build up our class
- hierarchy data structure. */
-
-void
-vtv_recover_class_info (void)
-{
- tree current_class;
- unsigned i;
-
- if (vlt_saved_class_info)
- {
- for (i = 0; i < vlt_saved_class_info->length(); ++i)
- {
- current_class = (*vlt_saved_class_info)[i];
- gcc_assert (TREE_CODE (current_class) == RECORD_TYPE);
- vtv_insert_single_class_info (current_class);
- }
- }
-}
-
-#include "gt-cp-vtable-class-hierarchy.h"
generated by cgit v1.1 at 2025-06-01 11:42:23 +0000