Remove some unused files

1 files changed, 0 insertions, 791 deletions

diff --git a/src/3p/chibicc/main.c b/src/3p/chibicc/main.c
deleted file mode 100644
index ffaabf4..0000000
--- a/src/3p/chibicc/main.c
+++ /dev/null
@@ -1,791 +0,0 @@
-#include "chibicc.h"
-
-typedef enum {
-  FILE_NONE, FILE_C, FILE_ASM, FILE_OBJ, FILE_AR, FILE_DSO,
-} FileType;
-
-StringArray include_paths;
-bool opt_fcommon = true;
-bool opt_fpic;
-
-static FileType opt_x;
-static StringArray opt_include;
-static bool opt_E;
-static bool opt_M;
-static bool opt_MD;
-static bool opt_MMD;
-static bool opt_MP;
-static bool opt_S;
-static bool opt_c;
-static bool opt_cc1;
-static bool opt_hash_hash_hash;
-static bool opt_static;
-static bool opt_shared;
-static char *opt_MF;
-static char *opt_MT;
-static char *opt_o;
-
-static StringArray ld_extra_args;
-static StringArray std_include_paths;
-
-char *base_file;
-static char *output_file;
-
-static StringArray input_paths;
-static StringArray tmpfiles;
-
-static void usage(int status) {
-  fprintf(stderr, "chibicc [ -o <path> ] <file>\n");
-  exit(status);
-}
-
-static bool take_arg(char *arg) {
-  char *x[] = {
-    "-o", "-I", "-idirafter", "-include", "-x", "-MF", "-MT", "-Xlinker",
-  };
-
-  for (int i = 0; i < sizeof(x) / sizeof(*x); i++)
-    if (!strcmp(arg, x[i]))
-      return true;
-  return false;
-}
-
-static void add_default_include_paths(char *argv0) {
-  // We expect that chibicc-specific include files are installed
-  // to ./include relative to argv[0].
-  strarray_push(&include_paths, format("%s/include", dirname(strdup(argv0))));
-
-  // Add standard include paths.
-  strarray_push(&include_paths, "/usr/local/include");
-  strarray_push(&include_paths, "/usr/include/x86_64-linux-gnu");
-  strarray_push(&include_paths, "/usr/include");
-
-  // Keep a copy of the standard include paths for -MMD option.
-  for (int i = 0; i < include_paths.len; i++)
-    strarray_push(&std_include_paths, include_paths.data[i]);
-}
-
-static void define(char *str) {
-  char *eq = strchr(str, '=');
-  if (eq)
-    define_macro(strndup(str, eq - str), eq + 1);
-  else
-    define_macro(str, "1");
-}
-
-static FileType parse_opt_x(char *s) {
-  if (!strcmp(s, "c"))
-    return FILE_C;
-  if (!strcmp(s, "assembler"))
-    return FILE_ASM;
-  if (!strcmp(s, "none"))
-    return FILE_NONE;
-  error("<command line>: unknown argument for -x: %s", s);
-}
-
-static char *quote_makefile(char *s) {
-  char *buf = calloc(1, strlen(s) * 2 + 1);
-
-  for (int i = 0, j = 0; s[i]; i++) {
-    switch (s[i]) {
-    case '$':
-      buf[j++] = '$';
-      buf[j++] = '$';
-      break;
-    case '#':
-      buf[j++] = '\\';
-      buf[j++] = '#';
-      break;
-    case ' ':
-    case '\t':
-      for (int k = i - 1; k >= 0 && s[k] == '\\'; k--)
-        buf[j++] = '\\';
-      buf[j++] = '\\';
-      buf[j++] = s[i];
-      break;
-    default:
-      buf[j++] = s[i];
-      break;
-    }
-  }
-  return buf;
-}
-
-static void parse_args(int argc, char **argv) {
-  // Make sure that all command line options that take an argument
-  // have an argument.
-  for (int i = 1; i < argc; i++)
-    if (take_arg(argv[i]))
-      if (!argv[++i])
-        usage(1);
-
-  StringArray idirafter = {};
-
-  for (int i = 1; i < argc; i++) {
-    if (!strcmp(argv[i], "-###")) {
-      opt_hash_hash_hash = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-cc1")) {
-      opt_cc1 = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "--help"))
-      usage(0);
-
-    if (!strcmp(argv[i], "-o")) {
-      opt_o = argv[++i];
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-o", 2)) {
-      opt_o = argv[i] + 2;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-S")) {
-      opt_S = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-fcommon")) {
-      opt_fcommon = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-fno-common")) {
-      opt_fcommon = false;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-c")) {
-      opt_c = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-E")) {
-      opt_E = true;
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-I", 2)) {
-      strarray_push(&include_paths, argv[i] + 2);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-D")) {
-      define(argv[++i]);
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-D", 2)) {
-      define(argv[i] + 2);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-U")) {
-      undef_macro(argv[++i]);
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-U", 2)) {
-      undef_macro(argv[i] + 2);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-include")) {
-      strarray_push(&opt_include, argv[++i]);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-x")) {
-      opt_x = parse_opt_x(argv[++i]);
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-x", 2)) {
-      opt_x = parse_opt_x(argv[i] + 2);
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-l", 2) || !strncmp(argv[i], "-Wl,", 4)) {
-      strarray_push(&input_paths, argv[i]);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-Xlinker")) {
-      strarray_push(&ld_extra_args, argv[++i]);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-s")) {
-      strarray_push(&ld_extra_args, "-s");
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-M")) {
-      opt_M = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-MF")) {
-      opt_MF = argv[++i];
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-MP")) {
-      opt_MP = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-MT")) {
-      if (opt_MT == NULL)
-        opt_MT = argv[++i];
-      else
-        opt_MT = format("%s %s", opt_MT, argv[++i]);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-MD")) {
-      opt_MD = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-MQ")) {
-      if (opt_MT == NULL)
-        opt_MT = quote_makefile(argv[++i]);
-      else
-        opt_MT = format("%s %s", opt_MT, quote_makefile(argv[++i]));
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-MMD")) {
-      opt_MD = opt_MMD = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-fpic") || !strcmp(argv[i], "-fPIC")) {
-      opt_fpic = true;
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-cc1-input")) {
-      base_file = argv[++i];
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-cc1-output")) {
-      output_file = argv[++i];
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-idirafter")) {
-      strarray_push(&idirafter, argv[i++]);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-static")) {
-      opt_static = true;
-      strarray_push(&ld_extra_args, "-static");
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-shared")) {
-      opt_shared = true;
-      strarray_push(&ld_extra_args, "-shared");
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-L")) {
-      strarray_push(&ld_extra_args, "-L");
-      strarray_push(&ld_extra_args, argv[++i]);
-      continue;
-    }
-
-    if (!strncmp(argv[i], "-L", 2)) {
-      strarray_push(&ld_extra_args, "-L");
-      strarray_push(&ld_extra_args, argv[i] + 2);
-      continue;
-    }
-
-    if (!strcmp(argv[i], "-hashmap-test")) {
-      hashmap_test();
-      exit(0);
-    }
-
-    // These options are ignored for now.
-    if (!strncmp(argv[i], "-O", 2) ||
-        !strncmp(argv[i], "-W", 2) ||
-        !strncmp(argv[i], "-g", 2) ||
-        !strncmp(argv[i], "-std=", 5) ||
-        !strcmp(argv[i], "-ffreestanding") ||
-        !strcmp(argv[i], "-fno-builtin") ||
-        !strcmp(argv[i], "-fno-omit-frame-pointer") ||
-        !strcmp(argv[i], "-fno-stack-protector") ||
-        !strcmp(argv[i], "-fno-strict-aliasing") ||
-        !strcmp(argv[i], "-m64") ||
-        !strcmp(argv[i], "-mno-red-zone") ||
-        !strcmp(argv[i], "-w"))
-      continue;
-
-    if (argv[i][0] == '-' && argv[i][1] != '\0')
-      error("unknown argument: %s", argv[i]);
-
-    strarray_push(&input_paths, argv[i]);
-  }
-
-  for (int i = 0; i < idirafter.len; i++)
-    strarray_push(&include_paths, idirafter.data[i]);
-
-  if (input_paths.len == 0)
-    error("no input files");
-
-  // -E implies that the input is the C macro language.
-  if (opt_E)
-    opt_x = FILE_C;
-}
-
-static FILE *open_file(char *path) {
-  if (!path || strcmp(path, "-") == 0)
-    return stdout;
-
-  FILE *out = fopen(path, "w");
-  if (!out)
-    error("cannot open output file: %s: %s", path, strerror(errno));
-  return out;
-}
-
-static bool endswith(char *p, char *q) {
-  int len1 = strlen(p);
-  int len2 = strlen(q);
-  return (len1 >= len2) && !strcmp(p + len1 - len2, q);
-}
-
-// Replace file extension
-static char *replace_extn(char *tmpl, char *extn) {
-  char *filename = basename(strdup(tmpl));
-  char *dot = strrchr(filename, '.');
-  if (dot)
-    *dot = '\0';
-  return format("%s%s", filename, extn);
-}
-
-static void cleanup(void) {
-  for (int i = 0; i < tmpfiles.len; i++)
-    unlink(tmpfiles.data[i]);
-}
-
-static char *create_tmpfile(void) {
-  char *path = strdup("/tmp/chibicc-XXXXXX");
-  int fd = mkstemp(path);
-  if (fd == -1)
-    error("mkstemp failed: %s", strerror(errno));
-  close(fd);
-
-  strarray_push(&tmpfiles, path);
-  return path;
-}
-
-static void run_subprocess(char **argv) {
-  // If -### is given, dump the subprocess's command line.
-  if (opt_hash_hash_hash) {
-    fprintf(stderr, "%s", argv[0]);
-    for (int i = 1; argv[i]; i++)
-      fprintf(stderr, " %s", argv[i]);
-    fprintf(stderr, "\n");
-  }
-
-  if (fork() == 0) {
-    // Child process. Run a new command.
-    execvp(argv[0], argv);
-    fprintf(stderr, "exec failed: %s: %s\n", argv[0], strerror(errno));
-    _exit(1);
-  }
-
-  // Wait for the child process to finish.
-  int status;
-  while (wait(&status) > 0);
-  if (status != 0)
-    exit(1);
-}
-
-static void run_cc1(int argc, char **argv, char *input, char *output) {
-  char **args = calloc(argc + 10, sizeof(char *));
-  memcpy(args, argv, argc * sizeof(char *));
-  args[argc++] = "-cc1";
-
-  if (input) {
-    args[argc++] = "-cc1-input";
-    args[argc++] = input;
-  }
-
-  if (output) {
-    args[argc++] = "-cc1-output";
-    args[argc++] = output;
-  }
-
-  run_subprocess(args);
-}
-
-// Print tokens to stdout. Used for -E.
-static void print_tokens(Token *tok) {
-  FILE *out = open_file(opt_o ? opt_o : "-");
-
-  int line = 1;
-  for (; tok->kind != TK_EOF; tok = tok->next) {
-    if (line > 1 && tok->at_bol)
-      fprintf(out, "\n");
-    if (tok->has_space && !tok->at_bol)
-      fprintf(out, " ");
-    fprintf(out, "%.*s", tok->len, tok->loc);
-    line++;
-  }
-  fprintf(out, "\n");
-}
-
-static bool in_std_include_path(char *path) {
-  for (int i = 0; i < std_include_paths.len; i++) {
-    char *dir = std_include_paths.data[i];
-    int len = strlen(dir);
-    if (strncmp(dir, path, len) == 0 && path[len] == '/')
-      return true;
-  }
-  return false;
-}
-
-// If -M options is given, the compiler write a list of input files to
-// stdout in a format that "make" command can read. This feature is
-// used to automate file dependency management.
-static void print_dependencies(void) {
-  char *path;
-  if (opt_MF)
-    path = opt_MF;
-  else if (opt_MD)
-    path = replace_extn(opt_o ? opt_o : base_file, ".d");
-  else if (opt_o)
-    path = opt_o;
-  else
-    path = "-";
-
-  FILE *out = open_file(path);
-  if (opt_MT)
-    fprintf(out, "%s:", opt_MT);
-  else
-    fprintf(out, "%s:", quote_makefile(replace_extn(base_file, ".o")));
-
-  File **files = get_input_files();
-
-  for (int i = 0; files[i]; i++) {
-    if (opt_MMD && in_std_include_path(files[i]->name))
-      continue;
-    fprintf(out, " \\\n  %s", files[i]->name);
-  }
-
-  fprintf(out, "\n\n");
-
-  if (opt_MP) {
-    for (int i = 1; files[i]; i++) {
-      if (opt_MMD && in_std_include_path(files[i]->name))
-        continue;
-      fprintf(out, "%s:\n\n", quote_makefile(files[i]->name));
-    }
-  }
-}
-
-static Token *must_tokenize_file(char *path) {
-  Token *tok = tokenize_file(path);
-  if (!tok)
-    error("%s: %s", path, strerror(errno));
-  return tok;
-}
-
-static Token *append_tokens(Token *tok1, Token *tok2) {
-  if (!tok1 || tok1->kind == TK_EOF)
-    return tok2;
-
-  Token *t = tok1;
-  while (t->next->kind != TK_EOF)
-    t = t->next;
-  t->next = tok2;
-  return tok1;
-}
-
-static void cc1(void) {
-  Token *tok = NULL;
-
-  // Process -include option
-  for (int i = 0; i < opt_include.len; i++) {
-    char *incl = opt_include.data[i];
-
-    char *path;
-    if (file_exists(incl)) {
-      path = incl;
-    } else {
-      path = search_include_paths(incl);
-      if (!path)
-        error("-include: %s: %s", incl, strerror(errno));
-    }
-
-    Token *tok2 = must_tokenize_file(path);
-    tok = append_tokens(tok, tok2);
-  }
-
-  // Tokenize and parse.
-  Token *tok2 = must_tokenize_file(base_file);
-  tok = append_tokens(tok, tok2);
-  tok = preprocess(tok);
-
-  // If -M or -MD are given, print file dependencies.
-  if (opt_M || opt_MD) {
-    print_dependencies();
-    if (opt_M)
-      return;
-  }
-
-  // If -E is given, print out preprocessed C code as a result.
-  if (opt_E) {
-    print_tokens(tok);
-    return;
-  }
-
-  Obj *prog = parse(tok);
-
-  // Open a temporary output buffer.
-  char *buf;
-  size_t buflen;
-  FILE *output_buf = open_memstream(&buf, &buflen);
-
-  // Traverse the AST to emit assembly.
-  codegen(prog, output_buf);
-  fclose(output_buf);
-
-  // Write the asembly text to a file.
-  FILE *out = open_file(output_file);
-  fwrite(buf, buflen, 1, out);
-  fclose(out);
-}
-
-static void assemble(char *input, char *output) {
-  char *cmd[] = {"as", "-c", input, "-o", output, NULL};
-  run_subprocess(cmd);
-}
-
-static char *find_file(char *pattern) {
-  char *path = NULL;
-  glob_t buf = {};
-  glob(pattern, 0, NULL, &buf);
-  if (buf.gl_pathc > 0)
-    path = strdup(buf.gl_pathv[buf.gl_pathc - 1]);
-  globfree(&buf);
-  return path;
-}
-
-// Returns true if a given file exists.
-bool file_exists(char *path) {
-  struct stat st;
-  return !stat(path, &st);
-}
-
-static char *find_libpath(void) {
-  if (file_exists("/usr/lib/x86_64-linux-gnu/crti.o"))
-    return "/usr/lib/x86_64-linux-gnu";
-  if (file_exists("/usr/lib64/crti.o"))
-    return "/usr/lib64";
-  error("library path is not found");
-}
-
-static char *find_gcc_libpath(void) {
-  char *paths[] = {
-    "/usr/lib/gcc/x86_64-linux-gnu/*/crtbegin.o",
-    "/usr/lib/gcc/x86_64-pc-linux-gnu/*/crtbegin.o", // For Gentoo
-    "/usr/lib/gcc/x86_64-redhat-linux/*/crtbegin.o", // For Fedora
-  };
-
-  for (int i = 0; i < sizeof(paths) / sizeof(*paths); i++) {
-    char *path = find_file(paths[i]);
-    if (path)
-      return dirname(path);
-  }
-
-  error("gcc library path is not found");
-}
-
-static void run_linker(StringArray *inputs, char *output) {
-  StringArray arr = {};
-
-  strarray_push(&arr, "ld");
-  strarray_push(&arr, "-o");
-  strarray_push(&arr, output);
-  strarray_push(&arr, "-m");
-  strarray_push(&arr, "elf_x86_64");
-
-  char *libpath = find_libpath();
-  char *gcc_libpath = find_gcc_libpath();
-
-  if (opt_shared) {
-    strarray_push(&arr, format("%s/crti.o", libpath));
-    strarray_push(&arr, format("%s/crtbeginS.o", gcc_libpath));
-  } else {
-    strarray_push(&arr, format("%s/crt1.o", libpath));
-    strarray_push(&arr, format("%s/crti.o", libpath));
-    strarray_push(&arr, format("%s/crtbegin.o", gcc_libpath));
-  }
-
-  strarray_push(&arr, format("-L%s", gcc_libpath));
-  strarray_push(&arr, "-L/usr/lib/x86_64-linux-gnu");
-  strarray_push(&arr, "-L/usr/lib64");
-  strarray_push(&arr, "-L/lib64");
-  strarray_push(&arr, "-L/usr/lib/x86_64-linux-gnu");
-  strarray_push(&arr, "-L/usr/lib/x86_64-pc-linux-gnu");
-  strarray_push(&arr, "-L/usr/lib/x86_64-redhat-linux");
-  strarray_push(&arr, "-L/usr/lib");
-  strarray_push(&arr, "-L/lib");
-
-  if (!opt_static) {
-    strarray_push(&arr, "-dynamic-linker");
-    strarray_push(&arr, "/lib64/ld-linux-x86-64.so.2");
-  }
-
-  for (int i = 0; i < ld_extra_args.len; i++)
-    strarray_push(&arr, ld_extra_args.data[i]);
-
-  for (int i = 0; i < inputs->len; i++)
-    strarray_push(&arr, inputs->data[i]);
-
-  if (opt_static) {
-    strarray_push(&arr, "--start-group");
-    strarray_push(&arr, "-lgcc");
-    strarray_push(&arr, "-lgcc_eh");
-    strarray_push(&arr, "-lc");
-    strarray_push(&arr, "--end-group");
-  } else {
-    strarray_push(&arr, "-lc");
-    strarray_push(&arr, "-lgcc");
-    strarray_push(&arr, "--as-needed");
-    strarray_push(&arr, "-lgcc_s");
-    strarray_push(&arr, "--no-as-needed");
-  }
-
-  if (opt_shared)
-    strarray_push(&arr, format("%s/crtendS.o", gcc_libpath));
-  else
-    strarray_push(&arr, format("%s/crtend.o", gcc_libpath));
-
-  strarray_push(&arr, format("%s/crtn.o", libpath));
-  strarray_push(&arr, NULL);
-
-  run_subprocess(arr.data);
-}
-
-static FileType get_file_type(char *filename) {
-  if (opt_x != FILE_NONE)
-    return opt_x;
-
-  if (endswith(filename, ".a"))
-    return FILE_AR;
-  if (endswith(filename, ".so"))
-    return FILE_DSO;
-  if (endswith(filename, ".o"))
-    return FILE_OBJ;
-  if (endswith(filename, ".c"))
-    return FILE_C;
-  if (endswith(filename, ".s"))
-    return FILE_ASM;
-
-  error("<command line>: unknown file extension: %s", filename);
-}
-
-int main(int argc, char **argv) {
-  atexit(cleanup);
-  init_macros();
-  parse_args(argc, argv);
-
-  if (opt_cc1) {
-    add_default_include_paths(argv[0]);
-    cc1();
-    return 0;
-  }
-
-  if (input_paths.len > 1 && opt_o && (opt_c || opt_S | opt_E))
-    error("cannot specify '-o' with '-c,' '-S' or '-E' with multiple files");
-
-  StringArray ld_args = {};
-
-  for (int i = 0; i < input_paths.len; i++) {
-    char *input = input_paths.data[i];
-
-    if (!strncmp(input, "-l", 2)) {
-      strarray_push(&ld_args, input);
-      continue;
-    }
-
-    if (!strncmp(input, "-Wl,", 4)) {
-      char *s = strdup(input + 4);
-      char *arg = strtok(s, ",");
-      while (arg) {
-        strarray_push(&ld_args, arg);
-        arg = strtok(NULL, ",");
-      }
-      continue;
-    }
-
-    char *output;
-    if (opt_o)
-      output = opt_o;
-    else if (opt_S)
-      output = replace_extn(input, ".s");
-    else
-      output = replace_extn(input, ".o");
-
-    FileType type = get_file_type(input);
-
-    // Handle .o or .a
-    if (type == FILE_OBJ || type == FILE_AR || type == FILE_DSO) {
-      strarray_push(&ld_args, input);
-      continue;
-    }
-
-    // Handle .s
-    if (type == FILE_ASM) {
-      if (!opt_S)
-        assemble(input, output);
-      continue;
-    }
-
-    assert(type == FILE_C);
-
-    // Just preprocess
-    if (opt_E || opt_M) {
-      run_cc1(argc, argv, input, NULL);
-      continue;
-    }
-
-    // Compile
-    if (opt_S) {
-      run_cc1(argc, argv, input, output);
-      continue;
-    }
-
-    // Compile and assemble
-    if (opt_c) {
-      char *tmp = create_tmpfile();
-      run_cc1(argc, argv, input, tmp);
-      assemble(tmp, output);
-      continue;
-    }
-
-    // Compile, assemble and link
-    char *tmp1 = create_tmpfile();
-    char *tmp2 = create_tmpfile();
-    run_cc1(argc, argv, input, tmp1);
-    assemble(tmp1, tmp2);
-    strarray_push(&ld_args, tmp2);
-    continue;
-  }
-
-  if (ld_args.len > 0)
-    run_linker(&ld_args, opt_o ? opt_o : "a.out");
-  return 0;
-}