@@ -5,3 +5,4 @@ libperf-y += perf_regs.o
libperf-$(CONFIG_DWARF) += dwarf-regs.o
libperf-$(CONFIG_DWARF) += skip-callchain-idx.o
+libperf-$(CONFIG_LIBUNWIND) += unwind-libunwind.o
new file mode 100644
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2016 Chandan Kumar, IBM Corporation.
+ *
+ * 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.
+ */
+
+#include <errno.h>
+#include <libunwind.h>
+#include <asm/perf_regs.h>
+#include "../../util/unwind.h"
+#include "../../util/debug.h"
+
+int libunwind__arch_reg_id(int regnum)
+{
+ switch (regnum) {
+ case UNW_PPC64_R0:
+ return PERF_REG_POWERPC_R0;
+ case UNW_PPC64_R1:
+ return PERF_REG_POWERPC_R1;
+ case UNW_PPC64_R2:
+ return PERF_REG_POWERPC_R2;
+ case UNW_PPC64_R3:
+ return PERF_REG_POWERPC_R3;
+ case UNW_PPC64_R4:
+ return PERF_REG_POWERPC_R4;
+ case UNW_PPC64_R5:
+ return PERF_REG_POWERPC_R5;
+ case UNW_PPC64_R6:
+ return PERF_REG_POWERPC_R6;
+ case UNW_PPC64_R7:
+ return PERF_REG_POWERPC_R7;
+ case UNW_PPC64_R8:
+ return PERF_REG_POWERPC_R8;
+ case UNW_PPC64_R9:
+ return PERF_REG_POWERPC_R9;
+ case UNW_PPC64_R10:
+ return PERF_REG_POWERPC_R10;
+ case UNW_PPC64_R11:
+ return PERF_REG_POWERPC_R11;
+ case UNW_PPC64_R12:
+ return PERF_REG_POWERPC_R12;
+ case UNW_PPC64_R13:
+ return PERF_REG_POWERPC_R13;
+ case UNW_PPC64_R14:
+ return PERF_REG_POWERPC_R14;
+ case UNW_PPC64_R15:
+ return PERF_REG_POWERPC_R15;
+ case UNW_PPC64_R16:
+ return PERF_REG_POWERPC_R16;
+ case UNW_PPC64_R17:
+ return PERF_REG_POWERPC_R17;
+ case UNW_PPC64_R18:
+ return PERF_REG_POWERPC_R18;
+ case UNW_PPC64_R19:
+ return PERF_REG_POWERPC_R19;
+ case UNW_PPC64_R20:
+ return PERF_REG_POWERPC_R20;
+ case UNW_PPC64_R21:
+ return PERF_REG_POWERPC_R21;
+ case UNW_PPC64_R22:
+ return PERF_REG_POWERPC_R22;
+ case UNW_PPC64_R23:
+ return PERF_REG_POWERPC_R23;
+ case UNW_PPC64_R24:
+ return PERF_REG_POWERPC_R24;
+ case UNW_PPC64_R25:
+ return PERF_REG_POWERPC_R25;
+ case UNW_PPC64_R26:
+ return PERF_REG_POWERPC_R26;
+ case UNW_PPC64_R27:
+ return PERF_REG_POWERPC_R27;
+ case UNW_PPC64_R28:
+ return PERF_REG_POWERPC_R28;
+ case UNW_PPC64_R29:
+ return PERF_REG_POWERPC_R29;
+ case UNW_PPC64_R30:
+ return PERF_REG_POWERPC_R30;
+ case UNW_PPC64_R31:
+ return PERF_REG_POWERPC_R31;
+ case UNW_PPC64_LR:
+ return PERF_REG_POWERPC_LINK;
+ case UNW_PPC64_CTR:
+ return PERF_REG_POWERPC_CTR;
+ case UNW_PPC64_XER:
+ return PERF_REG_POWERPC_XER;
+ case UNW_PPC64_NIP:
+ return PERF_REG_POWERPC_NIP;
+ default:
+ pr_err("unwind: invalid reg id %d\n", regnum);
+ return -EINVAL;
+ }
+ return -EINVAL;
+}
@@ -26,6 +26,7 @@ NO_PERF_REGS := 1
# Additional ARCH settings for ppc
ifeq ($(ARCH),powerpc)
NO_PERF_REGS := 0
+ LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
endif
# Additional ARCH settings for x86
Adds support for unwinding user stack dump by linking with libunwind. Signed-off-by: Chandan Kumar <chandan.kumar@linux.vnet.ibm.com> --- tools/perf/arch/powerpc/util/Build | 1 + tools/perf/arch/powerpc/util/unwind-libunwind.c | 96 +++++++++++++++++++++++++ tools/perf/config/Makefile | 1 + 3 files changed, 98 insertions(+) create mode 100644 tools/perf/arch/powerpc/util/unwind-libunwind.c