Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / arch / x86 / util / dwarf-regs.c

diff --git a/kernel/tools/perf/arch/x86/util/dwarf-regs.c b/kernel/tools/perf/arch/x86/util/dwarf-regs.c
new file mode 100644 (file)
index 0000000..be22dd4
--- /dev/null
+++ b/kernel/tools/perf/arch/x86/util/dwarf-regs.c
@@ -0,0 +1,75 @@
+/*
+ * dwarf-regs.c : Mapping of DWARF debug register numbers into register names.
+ * Extracted from probe-finder.c
+ *
+ * Written by Masami Hiramatsu <mhiramat@redhat.com>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include <stddef.h>
+#include <dwarf-regs.h>
+
+/*
+ * Generic dwarf analysis helpers
+ */
+
+#define X86_32_MAX_REGS 8
+const char *x86_32_regs_table[X86_32_MAX_REGS] = {
+       "%ax",
+       "%cx",
+       "%dx",
+       "%bx",
+       "$stack",       /* Stack address instead of %sp */
+       "%bp",
+       "%si",
+       "%di",
+};
+
+#define X86_64_MAX_REGS 16
+const char *x86_64_regs_table[X86_64_MAX_REGS] = {
+       "%ax",
+       "%dx",
+       "%cx",
+       "%bx",
+       "%si",
+       "%di",
+       "%bp",
+       "%sp",
+       "%r8",
+       "%r9",
+       "%r10",
+       "%r11",
+       "%r12",
+       "%r13",
+       "%r14",
+       "%r15",
+};
+
+/* TODO: switching by dwarf address size */
+#ifdef __x86_64__
+#define ARCH_MAX_REGS X86_64_MAX_REGS
+#define arch_regs_table x86_64_regs_table
+#else
+#define ARCH_MAX_REGS X86_32_MAX_REGS
+#define arch_regs_table x86_32_regs_table
+#endif
+
+/* Return architecture dependent register string (for kprobe-tracer) */
+const char *get_arch_regstr(unsigned int n)
+{
+       return (n <= ARCH_MAX_REGS) ? arch_regs_table[n] : NULL;
+}