Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/tests/allregs.c b/tests/allregs.c
new file mode 100644
index 0000000..286f7e3
--- /dev/null
+++ b/tests/allregs.c
@@ -0,0 +1,204 @@
+/* Copyright (C) 2005, 2006, 2015 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file 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 of the License, or
+ (at your option) any later version.
+
+ elfutils 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 this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <error.h>
+#include <locale.h>
+#include <argp.h>
+#include <assert.h>
+#include ELFUTILS_HEADER(dwfl)
+#include <dwarf.h>
+
+#include "../libdw/known-dwarf.h"
+
+static const char *
+dwarf_encoding_string (unsigned int code)
+{
+ static const char *const known[] =
+ {
+#define DWARF_ONE_KNOWN_DW_ATE(NAME, CODE) [CODE] = #NAME,
+ DWARF_ALL_KNOWN_DW_ATE
+#undef DWARF_ONE_KNOWN_DW_ATE
+ };
+
+ if (likely (code < sizeof (known) / sizeof (known[0])))
+ return known[code];
+
+ return NULL;
+}
+
+
+static int
+first_module (Dwfl_Module *mod,
+ void **userdatap __attribute__ ((unused)),
+ const char *name __attribute__ ((unused)),
+ Dwarf_Addr low_addr __attribute__ ((unused)),
+ void *arg)
+{
+ Dwarf_Addr bias;
+ if (dwfl_module_getelf (mod, &bias) == NULL) /* Not really a module. */
+ return DWARF_CB_OK;
+
+ *(Dwfl_Module **) arg = mod;
+ return DWARF_CB_ABORT;
+}
+
+
+struct state
+{
+ struct reginfo *info;
+ int nregs;
+};
+
+struct reginfo
+{
+ const char *set, *pfx;
+ int regno;
+ int bits;
+ int type;
+ char name[32];
+};
+
+static int
+compare (const void *r1, const void *r2)
+{
+ const struct reginfo *a = r1, *b = r2;
+ if (a->set == b->set)
+ return a->regno - b->regno;
+ if (a->set == NULL)
+ return 1;
+ if (b->set == NULL)
+ return -1;
+ if (!strcmp (a->set, "integer"))
+ return -1;
+ if (!strcmp (b->set, "integer"))
+ return 1;
+ return strcmp (a->set, b->set);
+}
+
+static int
+one_register (void *arg,
+ int regno,
+ const char *setname,
+ const char *prefix,
+ const char *regname,
+ int bits, int type)
+{
+ struct state *state = arg;
+
+ if (regno >= state->nregs)
+ {
+ state->info = realloc (state->info, (regno + 1) * sizeof state->info[0]);
+ memset (&state->info[state->nregs], 0,
+ ((void *) &state->info[regno + 1]
+ - (void *) &state->info[state->nregs]));
+ state->nregs = regno + 1;
+ }
+
+ state->info[regno].regno = regno;
+ state->info[regno].set = setname;
+ state->info[regno].pfx = prefix;
+ state->info[regno].bits = bits;
+ state->info[regno].type = type;
+ assert (strlen (regname) < sizeof state->info[regno].name);
+ strcpy (state->info[regno].name, regname);
+
+ return DWARF_CB_OK;
+}
+
+
+static int
+match_register (void *arg,
+ int regno,
+ const char *setname,
+ const char *prefix,
+ const char *regname,
+ int bits, int type)
+{
+ if (regno == *(int *) arg)
+ printf ("%5d => %s register %s%s %s %d bits\n",
+ regno, setname, prefix, regname,
+ dwarf_encoding_string (type), bits);
+
+ return DWARF_CB_ABORT;
+}
+
+
+int
+main (int argc, char **argv)
+{
+ int remaining;
+
+ /* Set locale. */
+ (void) setlocale (LC_ALL, "");
+
+ Dwfl *dwfl = NULL;
+ (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, &dwfl);
+ assert (dwfl != NULL);
+
+ Dwfl_Module *mod = NULL;
+ if (dwfl_getmodules (dwfl, &first_module, &mod, 0) < 0)
+ error (EXIT_FAILURE, 0, "dwfl_getmodules: %s", dwfl_errmsg (-1));
+
+ if (remaining == argc)
+ {
+ struct state state = { NULL, 0 };
+ int result = dwfl_module_register_names (mod, &one_register, &state);
+ if (result != 0 || state.nregs == 0)
+ error (EXIT_FAILURE, 0, "dwfl_module_register_names: %s",
+ result ? dwfl_errmsg (-1) : "no backend registers known");
+
+ qsort (state.info, state.nregs, sizeof state.info[0], &compare);
+
+ const char *set = NULL;
+ for (int i = 0; i < state.nregs; ++i)
+ if (state.info[i].set != NULL)
+ {
+ if (set != state.info[i].set)
+ printf ("%s registers:\n", state.info[i].set);
+ set = state.info[i].set;
+
+ printf ("\t%3d: %s%s (%s), %s %d bits\n",
+ state.info[i].regno,
+ state.info[i].pfx ?: "", state.info[i].name,
+ state.info[i].name,
+ dwarf_encoding_string (state.info[i].type),
+ state.info[i].bits);
+ }
+ free (state.info);
+ }
+ else
+ do
+ {
+ const char *arg = argv[remaining++];
+ int regno = atoi (arg);
+ int result = dwfl_module_register_names (mod, &match_register, ®no);
+ if (result != DWARF_CB_ABORT)
+ error (EXIT_FAILURE, 0, "dwfl_module_register_names: %s",
+ result ? dwfl_errmsg (-1) : "no backend registers known");
+ }
+ while (remaining < argc);
+
+ dwfl_end (dwfl);
+
+ return 0;
+}