Add yasm to the GN build

third_party/yasm/BUILD.gn

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# The yasm build process creates a slew of small C subprograms that
+# dynamically generate files at various point in the build process.  This makes
+# the build integration moderately complex.
+#
+# There are three classes of dynamically generated files:
+#   1) C source files that should be included in the build (eg., lc3bid.c)
+#   2) C source files that are #included by static C sources (eg., license.c)
+#   3) Intermediate files that are used as input by other subprograms to
+#      further generate files in category #1 or #2.  (eg., version.mac)
+#
+# This structure is represented with the following targets:
+#   1) yasm -- Sources, flags for the main yasm executable. Also has most of
+#              of the actions and rules that invoke the subprograms.
+#   2) yasm_config -- General build configuration including setting a
+#              source_prereqs listing the checked in version of files
+#              generated by manually running configure. These manually
+#              generated files are used by all binaries.
+#   3) yasm_utils -- Object files with memory management and hashing utilities
+#              shared between yasm and the genperf subprogram.
+#   4) genmacro, genmodule, etc. -- One executable target for each subprogram.
+#   5) generate_license, generate_module, etc. -- Actions that invoke programs
+#              built in #4 to generate .c files.
+#   6) compile_gperf, compile_re2c, etc. -- Actions that invoke programs that
+#              turn intermediate files into .c files.
+
+if (default_toolchain == host_toolchain) {
+
+  # Various files referenced by multiple targets.
+  yasm_gen_include_dir = "$target_gen_dir/include"
+  config_makefile = "source/config/$os/Makefile"
+  version_file = "version.mac"
+
+  import("//build/compiled_action.gni")
+
+  config("yasm_config") {
+    include_dirs = [
+      "source/config/$os",
+      "source/patched-yasm",
+    ]
+    source_prereqs = [
+      config_makefile,
+      "source/config/$os/config.h",
+      "source/config/$os/libyasm-stdint.h",
+    ]
+    defines = [ "HAVE_CONFIG_H" ]
+    cflags = [ "-std=gnu99" ]
+  }
+
+  executable("genmacro") {
+    sources = [ "source/patched-yasm/tools/genmacro/genmacro.c" ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+  }
+
+  executable("genmodule") {
+    sources = [ "source/patched-yasm/libyasm/genmodule.c" ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+  }
+
+  executable("genperf") {
+    sources = [
+      "source/patched-yasm/tools/genperf/genperf.c",
+      "source/patched-yasm/tools/genperf/perfect.c",
+    ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+
+    deps = [ ":yasm_utils" ]
+  }
+
+  # Used by both yasm and genperf binaries.
+  source_set("yasm_utils") {
+    sources = [
+      "source/patched-yasm/libyasm/phash.c",
+      "source/patched-yasm/libyasm/xmalloc.c",
+      "source/patched-yasm/libyasm/xstrdup.c",
+    ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+  }
+
+  executable("genstring") {
+    sources = [ "source/patched-yasm/genstring.c", ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+  }
+
+  executable("genversion") {
+    sources = [ "source/patched-yasm/modules/preprocs/nasm/genversion.c" ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+  }
+
+  executable("re2c") {
+    sources = [
+       "source/patched-yasm/tools/re2c/main.c",
+       "source/patched-yasm/tools/re2c/code.c",
+       "source/patched-yasm/tools/re2c/dfa.c",
+       "source/patched-yasm/tools/re2c/parser.c",
+       "source/patched-yasm/tools/re2c/actions.c",
+       "source/patched-yasm/tools/re2c/scanner.c",
+       "source/patched-yasm/tools/re2c/mbo_getopt.c",
+       "source/patched-yasm/tools/re2c/substr.c",
+       "source/patched-yasm/tools/re2c/translate.c",
+    ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+
+    # re2c is missing CLOSEVOP from one switch.
+    cflags = [ "-Wno-switch" ]
+  }
+
+  executable("yasm") {
+    sources = [
+      "source/patched-yasm/frontends/yasm/yasm-options.c",
+      "source/patched-yasm/frontends/yasm/yasm.c",
+      "source/patched-yasm/libyasm/assocdat.c",
+      "source/patched-yasm/libyasm/bc-align.c",
+      "source/patched-yasm/libyasm/bc-data.c",
+      "source/patched-yasm/libyasm/bc-incbin.c",
+      "source/patched-yasm/libyasm/bc-org.c",
+      "source/patched-yasm/libyasm/bc-reserve.c",
+      "source/patched-yasm/libyasm/bitvect.c",
+      "source/patched-yasm/libyasm/bytecode.c",
+      "source/patched-yasm/libyasm/errwarn.c",
+      "source/patched-yasm/libyasm/expr.c",
+      "source/patched-yasm/libyasm/file.c",
+      "source/patched-yasm/libyasm/floatnum.c",
+      "source/patched-yasm/libyasm/hamt.c",
+      "source/patched-yasm/libyasm/insn.c",
+      "source/patched-yasm/libyasm/intnum.c",
+      "source/patched-yasm/libyasm/inttree.c",
+      "source/patched-yasm/libyasm/linemap.c",
+      "source/patched-yasm/libyasm/md5.c",
+      "source/patched-yasm/libyasm/mergesort.c",
+      "source/patched-yasm/libyasm/section.c",
+      "source/patched-yasm/libyasm/strcasecmp.c",
+      "source/patched-yasm/libyasm/strsep.c",
+      "source/patched-yasm/libyasm/symrec.c",
+      "source/patched-yasm/libyasm/valparam.c",
+      "source/patched-yasm/libyasm/value.c",
+      "source/patched-yasm/modules/arch/lc3b/lc3barch.c",
+      "source/patched-yasm/modules/arch/lc3b/lc3bbc.c",
+      "source/patched-yasm/modules/arch/x86/x86arch.c",
+      "source/patched-yasm/modules/arch/x86/x86bc.c",
+      "source/patched-yasm/modules/arch/x86/x86expr.c",
+      "source/patched-yasm/modules/arch/x86/x86id.c",
+      "source/patched-yasm/modules/dbgfmts/codeview/cv-dbgfmt.c",
+      "source/patched-yasm/modules/dbgfmts/codeview/cv-symline.c",
+      "source/patched-yasm/modules/dbgfmts/codeview/cv-type.c",
+      "source/patched-yasm/modules/dbgfmts/dwarf2/dwarf2-aranges.c",
+      "source/patched-yasm/modules/dbgfmts/dwarf2/dwarf2-dbgfmt.c",
+      "source/patched-yasm/modules/dbgfmts/dwarf2/dwarf2-info.c",
+      "source/patched-yasm/modules/dbgfmts/dwarf2/dwarf2-line.c",
+      "source/patched-yasm/modules/dbgfmts/null/null-dbgfmt.c",
+      "source/patched-yasm/modules/dbgfmts/stabs/stabs-dbgfmt.c",
+      "source/patched-yasm/modules/listfmts/nasm/nasm-listfmt.c",
+      "source/patched-yasm/modules/objfmts/bin/bin-objfmt.c",
+      "source/patched-yasm/modules/objfmts/coff/coff-objfmt.c",
+      "source/patched-yasm/modules/objfmts/coff/win64-except.c",
+      "source/patched-yasm/modules/objfmts/dbg/dbg-objfmt.c",
+      "source/patched-yasm/modules/objfmts/elf/elf-objfmt.c",
+      "source/patched-yasm/modules/objfmts/elf/elf-x86-amd64.c",
+      "source/patched-yasm/modules/objfmts/elf/elf-x86-x86.c",
+      "source/patched-yasm/modules/objfmts/elf/elf.c",
+      "source/patched-yasm/modules/objfmts/macho/macho-objfmt.c",
+      "source/patched-yasm/modules/objfmts/rdf/rdf-objfmt.c",
+      "source/patched-yasm/modules/objfmts/xdf/xdf-objfmt.c",
+      "source/patched-yasm/modules/parsers/gas/gas-parse.c",
+      "source/patched-yasm/modules/parsers/gas/gas-parse-intel.c",
+      "source/patched-yasm/modules/parsers/gas/gas-parser.c",
+      "source/patched-yasm/modules/parsers/nasm/nasm-parse.c",
+      "source/patched-yasm/modules/parsers/nasm/nasm-parser.c",
+      "source/patched-yasm/modules/preprocs/cpp/cpp-preproc.c",
+      "source/patched-yasm/modules/preprocs/nasm/nasm-eval.c",
+      "source/patched-yasm/modules/preprocs/nasm/nasm-pp.c",
+      "source/patched-yasm/modules/preprocs/nasm/nasm-preproc.c",
+      "source/patched-yasm/modules/preprocs/nasm/nasmlib.c",
+      "source/patched-yasm/modules/preprocs/raw/raw-preproc.c",
+
+      # Files generated by compile_gperf
+      "$target_gen_dir/x86cpu.c",
+      "$target_gen_dir/x86regtmod.c",
+
+      # Files generated by compile_re2c
+      "$target_gen_dir/gas-token.c",
+      "$target_gen_dir/nasm-token.c",
+
+      # File generated by compile_re2c_lc3b
+      "$target_gen_dir/lc3bid.c",
+
+      # File generated by generate_module
+      "$target_gen_dir/module.c"
+    ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ ":yasm_config",
+                 "//build/config/compiler:no_chromium_code" ]
+
+    # Yasm generates a bunch of .c files which its source file #include.
+    # Add the |target_gen_dir| into the include path so it can find them.
+    # Ideally, these generated .c files would be placed into a separate
+    # directory, but the gen_x86_insn.py script does not make this easy.
+    include_dirs = [ yasm_gen_include_dir ]
+
+    cflags = [ "-ansi", "-pedantic" ]
+    if (is_clang) {
+      cflags += [ "-Wno-incompatible-pointer-types" ]
+    }
+
+    # TODO(ajwong): This should take most of the generated output as
+    # source_prereqs.
+    deps = [
+      ":compile_gperf",
+      ":compile_gperf_for_include",
+      ":compile_nasm_macros",
+      ":compile_nasm_version",
+      ":compile_win64_gas",
+      ":compile_win64_nasm",
+      ":compile_re2c",
+      ":generate_license",
+      ":generate_module",
+      ":generate_version",
+      ":yasm_utils",
+    ]
+  }
+
+  compiled_action_foreach("compile_gperf") {
+    tool = ":genperf"
+    sources = [
+      "source/patched-yasm/modules/arch/x86/x86cpu.gperf",
+      "source/patched-yasm/modules/arch/x86/x86regtmod.gperf",
+    ]
+
+    outputs = [ "$target_gen_dir/{{source_name_part}}.c" ]
+    args = [
+      "{{source}}",
+      rebase_path(target_gen_dir, ".") + "/{{source_name_part}}.c",
+    ]
+    deps = [
+      ":generate_x86_insn"
+    ]
+  }
+
+  # This differs from |compile_gperf| in where it places it output files.
+  compiled_action_foreach("compile_gperf_for_include") {
+    tool = ":genperf"
+    sources = [
+      # Make sure the generated gperf files in $target_gen_dir are synced with
+      # the outputs for the related generate_*_insn actions in the
+      # generate_files target below.
+      #
+      # The output for these two are #included by
+      #   source/patched-yasm/modules/arch/x86/x86id.c
+      "$yasm_gen_include_dir/x86insn_gas.gperf",
+      "$yasm_gen_include_dir/x86insn_nasm.gperf",
+    ]
+
+    outputs = [ "$yasm_gen_include_dir/{{source_name_part}}.c" ]
+    args = [
+      "{{source}}",
+      rebase_path(yasm_gen_include_dir, ".") + "/{{source_name_part}}.c",
+    ]
+    deps = [
+      ":generate_x86_insn"
+    ]
+  }
+
+  template("compile_macro") {
+    compiled_action(target_name) {
+      tool = ":genmacro"
+      # Output #included by source/patched-yasm/frontends/yasm/yasm.c.
+      sources = invoker.sources
+      outputs = invoker.outputs
+      args = [
+        rebase_path(outputs[0], root_build_dir),
+        invoker.macro_varname,
+        rebase_path(sources[0], root_build_dir),
+      ]
+      if (defined(invoker.deps)) {
+        deps = invoker.deps
+      }
+    }
+  }
+
+  compile_macro("compile_nasm_macros") {
+    # Output #included by
+    #   source/patched-yasm/modules/preprocs/nasm/nasm-parser.c
+    sources = [ "source/patched-yasm/modules/parsers/nasm/nasm-std.mac" ]
+    outputs = [ "$yasm_gen_include_dir/nasm-macros.c" ]
+    macro_varname = "nasm_standard_mac"
+  }
+
+  compile_macro("compile_nasm_version") {
+    # Output #included by
+    #   source/patched-yasm/modules/preprocs/nasm/nasm-preproc.c
+    sources = [ "$target_gen_dir/$version_file" ]
+    outputs = [ "$yasm_gen_include_dir/nasm-version.c" ]
+    macro_varname = "nasm_version_mac"
+    deps = [ ":generate_version" ]
+  }
+
+  compile_macro("compile_win64_gas") {
+    # Output #included by source/patched-yasm/frontends/yasm/yasm.c.
+    sources = [ "source/patched-yasm/modules/objfmts/coff/win64-gas.mac" ]
+    outputs = [ "$yasm_gen_include_dir/win64-gas.c" ]
+    macro_varname = "win64_gas_stdmac"
+  }
+
+  compile_macro("compile_win64_nasm") {
+    # Output #included by source/patched-yasm/frontends/yasm/yasm.c.
+    sources = [ "source/patched-yasm/modules/objfmts/coff/win64-nasm.mac" ]
+    outputs = [ "$yasm_gen_include_dir/win64-nasm.c" ]
+    macro_varname = "win64_nasm_stdmac"
+  }
+
+  compiled_action_foreach("compile_re2c") {
+    tool = ":re2c"
+    sources = [
+      "source/patched-yasm/modules/parsers/gas/gas-token.re",
+      "source/patched-yasm/modules/parsers/nasm/nasm-token.re",
+    ]
+    outputs = [ "$target_gen_dir/{{source_name_part}}.c" ]
+    args = [
+      "-b",
+      "-o",
+      rebase_path(target_gen_dir, ".") + "/{{source_name_part}}.c",
+      "{{source}}",
+    ]
+  }
+
+  # This call doesn't fit into the re2c template above.
+  compiled_action("compile_re2c_lc3b") {
+    tool = ":re2c"
+    sources = [ "source/patched-yasm/modules/arch/lc3b/lc3bid.re" ]
+    outputs = [ "$target_gen_dir/lc3bid.c" ]
+    args = [
+      "-s",
+      "-o",
+      rebase_path(outputs[0], root_build_dir),
+      rebase_path(sources[0], root_build_dir),
+    ]
+  }
+
+  compiled_action("generate_license") {
+    tool = ":genstring"
+    # Output #included by source/patched-yasm/frontends/yasm/yasm.c.
+    sources = [ "source/patched-yasm/COPYING" ]
+    outputs = [ "$yasm_gen_include_dir/license.c" ]
+    args = [
+      "license_msg",
+      rebase_path(outputs[0], root_build_dir),
+      rebase_path(sources[0], root_build_dir),
+    ]
+  }
+
+  compiled_action("generate_module") {
+    tool = ":genmodule"
+    sources = [ "source/patched-yasm/libyasm/module.in" ]
+    outputs = [ "$target_gen_dir/module.c" ]
+    args = [
+      rebase_path(sources[0], root_build_dir),
+      rebase_path(config_makefile, root_build_dir),
+      rebase_path(outputs[0], root_build_dir),
+    ]
+  }
+
+  compiled_action("generate_version") {
+    tool = ":genversion"
+    outputs = [ "$target_gen_dir/$version_file" ]
+    args = [
+      rebase_path(outputs[0],
+      root_build_dir)
+    ]
+  }
+
+  action("generate_x86_insn") {
+    script = "source/patched-yasm/modules/arch/x86/gen_x86_insn.py"
+    # Output eventually #included by source/patched-yasm/frontends/yasm/x86id.c
+    outputs = [
+      "$yasm_gen_include_dir/x86insns.c",
+      "$yasm_gen_include_dir/x86insn_gas.gperf",
+      "$yasm_gen_include_dir/x86insn_nasm.gperf",
+    ]
+    args = [ rebase_path(yasm_gen_include_dir, root_build_dir) ]
+  }
+}