Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/backends/i386_regs.c b/backends/i386_regs.c
new file mode 100644
index 0000000..7ec93bb
--- /dev/null
+++ b/backends/i386_regs.c
@@ -0,0 +1,153 @@
+/* Register names and numbers for i386 DWARF.
+ Copyright (C) 2005, 2006, 2007 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 either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ 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 copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+#include <dwarf.h>
+
+#define BACKEND i386_
+#include "libebl_CPU.h"
+
+ssize_t
+i386_register_info (Ebl *ebl __attribute__ ((unused)),
+ int regno, char *name, size_t namelen,
+ const char **prefix, const char **setname,
+ int *bits, int *type)
+{
+ if (name == NULL)
+ return 46;
+
+ if (regno < 0 || regno > 45 || namelen < 6)
+ return -1;
+
+ *prefix = "%";
+ *bits = 32;
+ *type = DW_ATE_unsigned;
+ if (regno < 11)
+ {
+ *setname = "integer";
+ if (regno < 9)
+ *type = DW_ATE_signed;
+ }
+ else if (regno < 19)
+ {
+ *setname = "x87";
+ *type = DW_ATE_float;
+ *bits = 80;
+ }
+ else if (regno < 29)
+ {
+ *setname = "SSE";
+ *bits = 128;
+ }
+ else if (regno < 37)
+ {
+ *setname = "MMX";
+ *bits = 64;
+ }
+ else if (regno < 40)
+ *setname = "FPU-control";
+ else
+ {
+ *setname = "segment";
+ *bits = 16;
+ }
+
+ switch (regno)
+ {
+ static const char baseregs[][2] =
+ {
+ "ax", "cx", "dx", "bx", "sp", "bp", "si", "di", "ip"
+ };
+
+ case 4:
+ case 5:
+ case 8:
+ *type = DW_ATE_address;
+ FALLTHROUGH;
+ case 0 ... 3:
+ case 6 ... 7:
+ name[0] = 'e';
+ name[1] = baseregs[regno][0];
+ name[2] = baseregs[regno][1];
+ namelen = 3;
+ break;
+
+ case 9:
+ return stpcpy (name, "eflags") + 1 - name;
+ case 10:
+ return stpcpy (name, "trapno") + 1 - name;
+
+ case 11 ... 18:
+ name[0] = 's';
+ name[1] = 't';
+ name[2] = regno - 11 + '0';
+ namelen = 3;
+ break;
+
+ case 21 ... 28:
+ name[0] = 'x';
+ name[1] = 'm';
+ name[2] = 'm';
+ name[3] = regno - 21 + '0';
+ namelen = 4;
+ break;
+
+ case 29 ... 36:
+ name[0] = 'm';
+ name[1] = 'm';
+ name[2] = regno - 29 + '0';
+ namelen = 3;
+ break;
+
+ case 37:
+ *bits = 16;
+ return stpcpy (name, "fctrl") + 1 - name;
+ case 38:
+ *bits = 16;
+ return stpcpy (name, "fstat") + 1 - name;
+ case 39:
+ return stpcpy (name, "mxcsr") + 1 - name;
+
+ case 40 ... 45:
+ name[0] = "ecsdfg"[regno - 40];
+ name[1] = 's';
+ namelen = 2;
+ break;
+
+ default:
+ *setname = NULL;
+ return 0;
+ }
+
+ name[namelen++] = '\0';
+ return namelen;
+}