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/s390_regs.c b/backends/s390_regs.c
new file mode 100644
index 0000000..ba6178a
--- /dev/null
+++ b/backends/s390_regs.c
@@ -0,0 +1,146 @@
+/* Register names and numbers for S/390 DWARF.
+ Copyright (C) 2006 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 s390_
+#include "libebl_CPU.h"
+
+
+/*
+zseries (64)
+
+0-15 gpr0-gpr15 x
+16-19 fpr[0246]
+20-24 fpr[13578]
+25-27 fpr1[024]
+28 fpr9
+29-31 fpr1[135]
+32-47 cr0-cr15 x
+48-63 ar0-ar15 x
+64 psw_mask
+65 psw_address
+*/
+
+
+ssize_t
+s390_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 66;
+
+ if (regno < 0 || regno > 65 || namelen < 7)
+ return -1;
+
+ *prefix = "%";
+
+ *bits = ebl->class == ELFCLASS64 ? 64 : 32;
+ *type = DW_ATE_unsigned;
+ if (regno < 16)
+ {
+ *setname = "integer";
+ *type = DW_ATE_signed;
+ }
+ else if (regno < 32)
+ {
+ *setname = "FPU";
+ *type = DW_ATE_float;
+ *bits = 64;
+ }
+ else if (regno < 48 || regno > 63)
+ *setname = "control";
+ else
+ {
+ *setname = "access";
+ *bits = 32;
+ }
+
+ switch (regno)
+ {
+ case 0 ... 9:
+ name[0] = 'r';
+ name[1] = regno + '0';
+ namelen = 2;
+ break;
+
+ case 10 ... 15:
+ name[0] = 'r';
+ name[1] = '1';
+ name[2] = regno - 10 + '0';
+ namelen = 3;
+ break;
+
+ case 16 ... 31:
+ name[0] = 'f';
+ regno = (regno & 8) | ((regno & 4) >> 2) | ((regno & 3) << 1);
+ namelen = 1;
+ if (regno >= 10)
+ {
+ regno -= 10;
+ name[namelen++] = '1';
+ }
+ name[namelen++] = regno + '0';
+ break;
+
+ case 32 + 0 ... 32 + 9:
+ case 48 + 0 ... 48 + 9:
+ name[0] = regno < 48 ? 'c' : 'a';
+ name[1] = (regno & 15) + '0';
+ namelen = 2;
+ break;
+
+ case 32 + 10 ... 32 + 15:
+ case 48 + 10 ... 48 + 15:
+ name[0] = regno < 48 ? 'c' : 'a';
+ name[1] = '1';
+ name[2] = (regno & 15) - 10 + '0';
+ namelen = 3;
+ break;
+
+ case 64:
+ return stpcpy (name, "pswm") + 1 - name;
+ case 65:
+ *type = DW_ATE_address;
+ return stpcpy (name, "pswa") + 1 - name;
+
+ default:
+ *setname = NULL;
+ return 0;
+ }
+
+ name[namelen++] = '\0';
+ return namelen;
+}