Initial commit of vpp code.v1.0.0

Change-Id: Ib246f1fbfce93274020ee93ce461e3d8bd8b9f17
Signed-off-by: Ed Warnicke <eaw@cisco.com>

1 files changed, 577 insertions, 0 deletions

diff --git a/vppversion/lt.c b/vppversion/lt.c
new file mode 100644
index 00000000000..0de2b06114e
--- /dev/null
+++ b/vppversion/lt.c
@@ -0,0 +1,577 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <vppinfra/bitmap.h>
+#include <vppinfra/format.h>
+#include <vppinfra/hash.h>
+
+#define foreach_libtool_mode _ (compile) _ (link) _ (install)
+
+typedef enum {
+#define _(m) MODE_##m,
+  foreach_libtool_mode
+#undef _
+} lt_mode_t;
+
+typedef enum {
+  LITERAL,
+  OUTPUT_EXE,
+  OUTPUT_LO,
+  OUTPUT_LA,
+  LT_LIB,
+  NON_LT_LIB,
+  IGNORE,
+} lt_edit_type_t;
+
+typedef struct {
+  lt_edit_type_t type;
+  u8 * data;
+} lt_edit_t;
+
+typedef struct {
+  u8 * path;
+} lt_lib_path_t;
+
+typedef struct {
+  lt_mode_t mode;
+  int link_static;
+  int silent;
+  lt_edit_type_t output_edit_type;
+  u8 * output_file;
+  lt_edit_t * edits;
+  lt_lib_path_t * lib_path;
+  uword * rpath_hash;
+  u8 * tag;
+} lt_main_t;
+
+static lt_lib_path_t *
+search_lib_path (lt_main_t * lm, char * fmt, ...)
+{
+  va_list va;
+  static u8 * file_name, * path_name;
+  lt_lib_path_t * p = 0;
+
+  if (file_name)
+    _vec_len (file_name) = 0;
+
+  va_start (va, fmt);
+  file_name = va_format (file_name, fmt, &va);
+  va_end (va);
+
+  path_name = 0;
+  vec_foreach (p, lm->lib_path)
+    {
+      struct stat st;
+
+      if (path_name)
+	_vec_len (path_name) = 0;
+
+      path_name = format (path_name, "%s/%v%c", p->path, file_name, 0);
+      if (stat ((char *) path_name, &st) >= 0)
+	return p;
+    }
+  return 0;
+}
+
+static u8 * format_libtool_mode (u8 * s, va_list * args)
+{
+  int m = va_arg (*args, int);
+  char * t;
+  switch (m)
+    {
+#define _(f) case MODE_##f: t = #f; break;
+      foreach_libtool_mode;
+#undef _
+    default:
+      t = 0;
+    }
+  if (t)
+    vec_add (s, t, strlen (t));
+  else
+    s = format (s, "unknown 0x%x", m);
+  return s;
+}
+
+static uword unformat_libtool_mode (unformat_input_t * input, va_list * args)
+{
+  int * result = va_arg (*args, int *);
+#define _(m) if (unformat (input, #m)) { *result = MODE_##m; return 1; }
+  foreach_libtool_mode;
+#undef _
+  return 0;
+}
+
+static uword unformat_basename (unformat_input_t * input, va_list * args)
+{
+  u8 ** result = va_arg (*args, u8 **);
+  u8 * suffix = va_arg (*args, u8 *);
+  u8 * current_suffix = suffix;
+  uword c;
+
+  while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT)
+    {
+      switch (c)
+	{
+	case 0:
+	case ' ':
+	case '\t':
+	case '\n':
+	case '\r':
+	  goto fail;
+	}
+
+      vec_add1 (*result, c);
+      if (c == *current_suffix)
+	current_suffix++;
+      else
+	current_suffix = suffix;
+
+      if (*current_suffix == 0)
+	{
+	  _vec_len (*result) -= current_suffix - suffix;
+	  return 1;
+	}
+    }
+ fail:
+  vec_free (*result);
+  return 0;
+}
+
+static void edit (lt_main_t * lm, lt_edit_type_t type, char * fmt, ...)
+{
+  va_list va;
+  lt_edit_t * e;
+  u8 * s;
+
+  va_start (va, fmt);
+  s = va_format (0, fmt, &va);
+  va_end (va);
+
+  vec_add2 (lm->edits, e, 1);
+  e->type = type;
+  e->data = s;
+}
+
+static u8 * format_argv (u8 * s, va_list * args)
+{
+  u8 ** a = va_arg (*args, u8 **);
+  uword i;
+  for (i = 0; i < vec_len (a) - 1; i++)
+    {
+      if (i > 0)
+	vec_add1 (s, ' ');
+      vec_add (s, a[i], vec_len (a[i]) - 1);
+    }
+  return s;
+}
+
+static u8 * format_dirname (u8 * s, va_list * args)
+{
+  u8 * f = va_arg (*args, u8 *);
+  u8 * t;
+
+  for (t = vec_end (f) - 1; t >= f; t--)
+    {
+      if (t[0] == '/')
+	break;
+    }
+  if (t[0] == '/')
+    vec_add (s, f, t - f);
+  else
+    vec_add1 (s, '.');
+  return s;
+}
+
+static u8 * format_basename (u8 * s, va_list * args)
+{
+  u8 * f = va_arg (*args, u8 *);
+  u8 * t;
+
+  for (t = vec_end (f) - 1; t >= f; t--)
+    {
+      if (t[0] == '/')
+	break;
+    }
+  if (t[0] == '/')
+    vec_add (s, t + 1, vec_end (f) - (t + 1));
+  else
+    vec_add (s, f, vec_len (f));
+  return s;
+}
+
+static void my_system (char * fmt, ...)
+{
+  va_list va;
+  u8 * s;
+
+  va_start (va, fmt);
+  s = va_format (0, fmt, &va);
+  va_end (va);
+
+  vec_add1 (s, 0);		/* null terminate */
+  if (system ((char *) s) != 0)
+    clib_error ("%s", s);
+  vec_free (s);
+}
+
+static u8 * my_cmd (char * fmt, ...)
+{
+  va_list va;
+  u8 * s;
+  FILE * result;
+  int c;
+
+  va_start (va, fmt);
+  s = va_format (0, fmt, &va);
+  va_end (va);
+
+  vec_add1 (s, 0);		/* null terminate */
+  result = popen ((char *) s, "r");
+  if (! result)
+    clib_error ("%s", s);
+  _vec_len (s) = 0;
+  while ((c = fgetc (result)) != EOF)
+    vec_add1 (s, c);
+  pclose (result);
+  return s;
+}
+
+static void make_file_with_contents (lt_main_t * lm, u8 * contents, char * fmt, ...)
+{
+  va_list va;
+  u8 * s;
+  FILE * f;
+
+  va_start (va, fmt);
+  s = va_format (0, fmt, &va);
+  va_end (va);
+
+  vec_add1 (s, 0);		/* null terminate */
+  f = fopen ((char *) s, "w");
+
+  if (! f)
+    clib_error ("fopen %s", s);
+
+  if (1 != fwrite (contents, vec_len (contents), 1, f))
+    clib_error ("fwrite");
+
+  fclose (f);
+}
+
+static u8 ** add_argv (u8 ** argv, char * fmt, ...)
+{
+  va_list va;
+  u8 * s;
+
+  va_start (va, fmt);
+  s = va_format (0, fmt, &va);
+  va_end (va);
+  vec_add1 (s, 0);		/* null terminate */
+  vec_add1 (argv, s);
+  return argv;
+}
+
+#define GEN_ARGV_PIC (1 << 0)
+#define GEN_ARGV_PUNT (1 << 1)
+
+static u8 ** gen_argv (lt_main_t * lm, uword flags)
+{
+  u8 ** r = 0;
+  uword * path_used_bitmap = 0;
+  lt_edit_t * e;
+  int is_punt;
+
+  is_punt = (flags & GEN_ARGV_PUNT) != 0;
+  if (is_punt)
+    {
+      /* No supported so punt back to shell based libtool. */
+      r = add_argv (r, "/bin/sh");
+      r = add_argv (r, "./libtool");
+      r = add_argv (r, "--mode=%U", format_libtool_mode, lm->mode);
+    }
+
+  if (lm->mode == MODE_compile)
+    ASSERT (lm->output_edit_type != OUTPUT_LA);
+
+  vec_foreach (e, lm->edits)
+    {
+      switch (e->type)
+	{
+	case LITERAL:
+	  r = add_argv (r, "%v", e->data);
+	  break;
+
+	case OUTPUT_EXE:
+	  if (! is_punt)
+	    my_system ("mkdir -p %U/.libs", format_dirname, e->data);
+	  r = add_argv (r, "-o");
+	  r = add_argv (r, "%s%v", is_punt ? "" : ".libs/", e->data);
+	  break;
+
+	case OUTPUT_LO:
+	  if (flags & GEN_ARGV_PIC)
+	    {
+	      r = add_argv (r, "-fPIC");
+	      r = add_argv (r, "-DPIC");
+	    }
+	  r = add_argv (r, "-o");
+
+	  if (is_punt)
+	    r = add_argv (r, "-o %v.lo", e->data);
+
+	  else if (flags & GEN_ARGV_PIC)
+	    {
+	      my_system ("mkdir -p %U/.libs", format_dirname, e->data);
+	      r = add_argv (r, "%U/.libs/%U.o",
+			    format_dirname, e->data,
+			    format_basename, e->data);
+	    }
+	  else
+	    {
+	      my_system ("mkdir -p %U", format_dirname, e->data);
+	      r = add_argv (r, "%v.o", e->data);
+	    }
+	  break;
+
+	case OUTPUT_LA:
+	  if (is_punt)
+	    r = add_argv (r, "-o %v.la", e->data);
+	  else
+	    abort ();
+	  break;
+
+	case LT_LIB:
+	  if (is_punt)
+	    r = add_argv (r, "%v.la", e->data);
+
+	  else if (lm->mode == MODE_link)
+	    {
+	      u8 * pwd = get_current_dir_name ();
+	      u8 * libdir = my_cmd (". %s/%v.la && echo -n ${libdir}", pwd, e->data);
+
+	      if (! hash_get_mem (lm->rpath_hash, libdir))
+		{
+		  r = add_argv (r, "-Wl,-rpath");
+		  r = add_argv (r, "-Wl,%v", libdir);
+		  hash_set_mem (lm->rpath_hash, libdir, 0);
+		}
+
+	      r = add_argv (r, "%U/.libs/%U.so",
+			    format_dirname, e->data,
+			    format_basename, e->data);
+	    }
+	  else
+	    r = add_argv (r, "%v.la", e->data);
+	  break;
+
+	case NON_LT_LIB:
+	  if (lm->mode == MODE_link && ! is_punt)
+	    {
+	      lt_lib_path_t * p = search_lib_path (lm, "lib%v.so", e->data);
+	      if (p)
+		{
+		  path_used_bitmap = clib_bitmap_ori (path_used_bitmap, p - lm->lib_path);
+		  r = add_argv (r, "%s/lib%v.so", p->path, e->data);
+		}
+	      else
+		r = add_argv (r, "-l%v", e->data);
+	    }
+
+	  else
+	    r = add_argv (r, "-l%v", e->data);
+	  break;
+
+	default:
+	  ASSERT (0);
+	}
+    }
+
+  {
+    uword i;
+    clib_bitmap_foreach (i, path_used_bitmap, ({
+      lt_lib_path_t * p = vec_elt_at_index (lm->lib_path, i);
+      r = add_argv (r, "-Wl,-rpath");
+      r = add_argv (r, "-Wl,%s", p->path);
+    }));
+    clib_bitmap_free (path_used_bitmap);
+  }
+
+  vec_add1 (r, 0);
+
+  return r;
+}
+
+static void do_command (lt_main_t * lm, u8 ** argv)
+{
+  u8 * cmd = format (0, "%U%c", format_argv, argv, 0);
+
+  if (! lm->silent)
+    fformat (stderr, "lt: %s\n", cmd);
+
+  if (system ((char *) cmd))
+    exit (1);
+
+  vec_free (cmd);
+}
+
+static int lt_main (unformat_input_t * input)
+{
+  lt_main_t _lm = {0}, * lm = &_lm;
+  clib_error_t * error = 0;
+  u8 * s;
+
+  lm->rpath_hash = hash_create_vec (0, sizeof (u8), sizeof (uword));
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      s = 0;
+
+      if (s)
+	_vec_len (s) = 0;
+
+      if (unformat (input, "-o %s", &s))
+	{
+	  u8 * dot = vec_end (s) - 4;
+	  int is_la = 0, is_lo = 0;
+
+	  is_lo = vec_len (s) >= 4 && ! strcmp ((char *) dot, ".lo");
+	  is_la = vec_len (s) >= 4 && ! strcmp ((char *) dot, ".la");
+	  if (is_lo || is_la)
+	    {
+	      dot[0] = 0;
+	      lm->output_edit_type = is_lo ? OUTPUT_LO : OUTPUT_LA;
+	    }
+	  else
+	    lm->output_edit_type = OUTPUT_EXE;
+	  edit (lm, lm->output_edit_type, "%s", s);
+	  lm->output_file = format (0, "%s", s);
+	}
+
+      else if (unformat (input, "-L%s", &s))
+	{
+	  lt_lib_path_t * p;
+	  vec_add2 (lm->lib_path, p, 1);
+	  p->path = s;
+	  edit (lm, LITERAL, "-L%s", s);
+	}
+
+      else if (unformat (input, "%U", unformat_basename, &s, ".la"))
+	edit (lm, LT_LIB, "%v", s);
+
+      else if (unformat (input, "-l%s", &s))
+	edit (lm, NON_LT_LIB, "%s", s);
+
+      else if (unformat (input, "--mode=%U", unformat_libtool_mode, &lm->mode))
+	;
+
+      else if (unformat (input, "--tag=%s", &lm->tag))
+	;
+
+      else if (unformat (input, "-static"))
+	{
+	  lm->link_static = 1;
+	  edit (lm, LITERAL, "%s", "-static");
+	}
+
+      else if (unformat (input, "%s", &s))
+	edit (lm, LITERAL, "%s", s);
+
+      else
+	{
+	  error = clib_error_create ("parse error `%U'",
+				     format_unformat_error, input);
+	  goto done;
+	}
+    }
+
+  {
+    u8 ** argv;
+    
+    if (! (lm->mode == MODE_compile
+	   || (lm->mode == MODE_link && lm->output_edit_type == OUTPUT_EXE && ! lm->link_static)))
+      {
+	argv = gen_argv (lm, GEN_ARGV_PUNT);
+	do_command (lm, argv);
+      }
+    else if (lm->mode == MODE_compile)
+      {
+	argv = gen_argv (lm, GEN_ARGV_PIC);
+	do_command (lm, argv);
+	argv = gen_argv (lm, 0);
+	do_command (lm, argv);
+      }
+    else
+      {
+	argv = gen_argv (lm, 0);
+	do_command (lm, argv);
+      }
+
+    if (lm->mode == MODE_compile)
+      {
+	u8 * s = 0;
+	u8 * f = lm->output_file;
+
+	/* Need this or .lo files are rejected. */
+	s = format (s, "# Generated by libtool (Eliot lt 0.0)\n");
+
+	s = format (s, "pic_object='.libs/%U.o'\n", format_basename, f);
+	s = format (s, "non_pic_object='%U.o'\n", format_basename, f);
+	make_file_with_contents (lm, s, "%v.lo", f);
+	vec_free (s);
+      }
+    else if (lm->mode == MODE_link)
+      {
+	u8 * s = 0;
+	u8 * f = lm->output_file;
+	s = format (s, "%s",
+		    "# Generated by libtool (Eliot lt) 2.4\n"
+		    "# %%%MAGIC variable%%%\n"
+                    "generated_by_libtool_version=2.4\n");
+	make_file_with_contents (lm, s, "%v", f);
+	vec_free (s);
+      }
+
+    {
+      int status;
+      while (1)
+	{
+	  if (waitpid (-1, &status, 0) < 0 && errno == ECHILD)
+	    break;
+	}
+      exit (0);
+    }
+  }
+
+ done:
+  if (s)
+    vec_free (s);
+  if (error)
+    {
+      clib_error_report (error);
+      return 1;
+    }
+  return 0;
+}
+
+int main (int argc, char * argv[])
+{
+  unformat_input_t i;
+
+  unformat_init_command_line (&i, argv);
+  exit (lt_main (&i));
+  return 0;
+}