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_initreg.c b/backends/i386_initreg.c
new file mode 100644
index 0000000..c344282
--- /dev/null
+++ b/backends/i386_initreg.c
@@ -0,0 +1,79 @@
+/* Fetch live process registers from TID.
+ Copyright (C) 2013 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
+
+#if (defined __i386__ || defined __x86_64__) && defined(__linux__)
+# include <sys/types.h>
+# include <sys/user.h>
+# include <sys/ptrace.h>
+#endif
+
+#define BACKEND i386_
+#include "libebl_CPU.h"
+
+bool
+i386_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
+ ebl_tid_registers_t *setfunc __attribute__ ((unused)),
+ void *arg __attribute__ ((unused)))
+{
+#if (!defined __i386__ && !defined __x86_64__) || !defined(__linux__)
+ return false;
+#else /* __i386__ || __x86_64__ */
+ struct user_regs_struct user_regs;
+ if (ptrace (PTRACE_GETREGS, tid, NULL, &user_regs) != 0)
+ return false;
+ Dwarf_Word dwarf_regs[9];
+# if defined __i386__
+ dwarf_regs[0] = user_regs.eax;
+ dwarf_regs[1] = user_regs.ecx;
+ dwarf_regs[2] = user_regs.edx;
+ dwarf_regs[3] = user_regs.ebx;
+ dwarf_regs[4] = user_regs.esp;
+ dwarf_regs[5] = user_regs.ebp;
+ dwarf_regs[6] = user_regs.esi;
+ dwarf_regs[7] = user_regs.edi;
+ dwarf_regs[8] = user_regs.eip;
+# elif defined __x86_64__
+ dwarf_regs[0] = user_regs.rax;
+ dwarf_regs[1] = user_regs.rcx;
+ dwarf_regs[2] = user_regs.rdx;
+ dwarf_regs[3] = user_regs.rbx;
+ dwarf_regs[4] = user_regs.rsp;
+ dwarf_regs[5] = user_regs.rbp;
+ dwarf_regs[6] = user_regs.rsi;
+ dwarf_regs[7] = user_regs.rdi;
+ dwarf_regs[8] = user_regs.rip;
+# else /* (__i386__ || __x86_64__) && (!__i386__ && !__x86_64__) */
+# error "source file error, it cannot happen"
+# endif /* (__i386__ || __x86_64__) && (!__i386__ && !__x86_64__) */
+ return setfunc (0, 9, dwarf_regs, arg);
+#endif /* __i386__ || __x86_64__ */
+}