Adjust for monotone.

1 files changed, 164 insertions, 0 deletions

diff --git a/libdwfl/argp-std.c b/libdwfl/argp-std.c
new file mode 100644
index 00000000..ebddcfb1
--- /dev/null
+++ b/libdwfl/argp-std.c
@@ -0,0 +1,164 @@
+/* Standard argp argument parsers for tools using libdwfl.
+   Copyright (C) 2005 Red Hat, Inc.
+
+   This program is Open Source software; you can redistribute it and/or
+   modify it under the terms of the Open Software License version 1.0 as
+   published by the Open Source Initiative.
+
+   You should have received a copy of the Open Software License along
+   with this program; if not, you may obtain a copy of the Open Software
+   License version 1.0 from http://www.opensource.org/licenses/osl.php or
+   by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
+   3001 King Ranch Road, Ukiah, CA 95482.   */
+
+#include "libdwflP.h"
+#include <argp.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <libintl.h>
+
+/* gettext helper macros.  */
+#define _(Str) dgettext ("elfutils", Str)
+
+
+#define OPT_DEBUGINFO 0x100
+
+static const struct argp_option options[] =
+{
+  { NULL, 0, NULL, 0, N_("Input Selection:"), 0 },
+  { "executable", 'e', "FILE", 0, N_("Find addresses in FILE"), 0 },
+  { "pid", 'p', "PID", 0,
+    N_("Find addresses in files mapped into process PID"), 0 },
+  { "kernel", 'k', NULL, 0, N_("Find addresses in the running kernel"), 0 },
+  { "debuginfo-path", OPT_DEBUGINFO, "PATH", 0,
+    N_("Search path for separate debuginfo files"), 0 },
+  { NULL, 0, NULL, 0, NULL, 0 }
+};
+
+static char *debuginfo_path;
+
+static const Dwfl_Callbacks proc_callbacks =
+  {
+    .find_debuginfo = INTUSE(dwfl_standard_find_debuginfo),
+    .debuginfo_path = &debuginfo_path,
+
+    .find_elf = INTUSE(dwfl_linux_proc_find_elf),
+  };
+
+static const Dwfl_Callbacks kernel_callbacks =
+  {
+    .find_debuginfo = INTUSE(dwfl_standard_find_debuginfo),
+    .debuginfo_path = &debuginfo_path,
+
+    .find_elf = INTUSE(dwfl_linux_kernel_find_elf),
+    .section_address = INTUSE(dwfl_linux_kernel_module_section_address),
+  };
+
+static error_t
+parse_opt (int key, char *arg, struct argp_state *state)
+{
+  inline void failure (int errnum, const char *msg)
+    {
+      if (errnum == -1)
+	argp_failure (state, EXIT_FAILURE, 0, "%s: %s",
+		      msg, INTUSE(dwfl_errmsg) (-1));
+      else
+	argp_failure (state, EXIT_FAILURE, errnum, "%s", msg);
+    }
+  inline error_t fail (int errnum, const char *msg)
+    {
+      failure (errnum, msg);
+      return errnum == -1 ? EIO : errnum;
+    }
+
+  switch (key)
+    {
+    case OPT_DEBUGINFO:
+      debuginfo_path = arg;
+      break;
+
+    case 'e':
+      if (state->hook == NULL)
+	{
+	  Dwfl *dwfl = INTUSE(dwfl_begin) (&proc_callbacks);
+	  if (INTUSE(dwfl_report_elf) (dwfl, "", arg, -1, 0) == NULL)
+	    return fail (-1, arg);
+	  state->hook = dwfl;
+	}
+      else
+	{
+	toomany:
+	  argp_error (state, "%s", _("only one -e, -p, or -k option allowed"));
+	  return EINVAL;
+	}
+      break;
+
+    case 'p':
+      if (state->hook == NULL)
+	{
+	  Dwfl *dwfl = INTUSE(dwfl_begin) (&proc_callbacks);
+	  int result = INTUSE(dwfl_linux_proc_report) (dwfl, atoi (arg));
+	  if (result != 0)
+	    return fail (result, arg);
+	  state->hook = dwfl;
+	}
+      else
+	goto toomany;
+      break;
+
+    case 'k':
+      if (state->hook == NULL)
+	{
+	  Dwfl *dwfl = INTUSE(dwfl_begin) (&kernel_callbacks);
+	  int result = INTUSE(dwfl_linux_kernel_report_kernel) (dwfl);
+	  if (result != 0)
+	    return fail (result, _("cannot load kernel symbols"));
+	  result = INTUSE(dwfl_linux_kernel_report_modules) (dwfl);
+	  if (result != 0)
+	    /* Non-fatal to have no modules since we do have the kernel.  */
+	    failure (result, _("cannot find kernel modules"));
+	  state->hook = dwfl;
+	}
+      else
+	goto toomany;
+      break;
+
+    case ARGP_KEY_SUCCESS:
+      {
+	Dwfl *dwfl = state->hook;
+
+	if (dwfl == NULL)
+	  {
+	    /* Default if no -e, -p, or -k, is "-e a.out".  */
+	    arg = "a.out";
+	    dwfl = INTUSE(dwfl_begin) (&proc_callbacks);
+	    if (INTUSE(dwfl_report_elf) (dwfl, "", arg, -1, 0) == NULL)
+	      return fail (-1, arg);
+	    state->hook = dwfl;
+	  }
+
+	/* One of the three flavors has done dwfl_begin and some reporting
+	   if we got here.  Tie up the Dwfl and return it to the caller of
+	   argp_parse.  */
+
+	int result = INTUSE(dwfl_report_end) (dwfl, NULL, NULL);
+	assert (result == 0);
+
+	*(Dwfl **) state->input = dwfl;
+      }
+      break;
+
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+static const struct argp libdwfl_argp =
+  { .options = options, .parser = parse_opt };
+
+const struct argp *
+dwfl_standard_argp (void)
+{
+  return &libdwfl_argp;
+}