Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / perf / arch / x86 / util / unwind-libunwind.c

diff --git a/kernel/tools/perf/arch/x86/util/unwind-libunwind.c b/kernel/tools/perf/arch/x86/util/unwind-libunwind.c
new file mode 100644 (file)
index 0000000..db25e93
--- /dev/null
+++ b/kernel/tools/perf/arch/x86/util/unwind-libunwind.c
@@ -0,0 +1,112 @@
+
+#include <errno.h>
+#include <libunwind.h>
+#include "perf_regs.h"
+#include "../../util/unwind.h"
+#include "../../util/debug.h"
+
+#ifdef HAVE_ARCH_X86_64_SUPPORT
+int libunwind__arch_reg_id(int regnum)
+{
+       int id;
+
+       switch (regnum) {
+       case UNW_X86_64_RAX:
+               id = PERF_REG_X86_AX;
+               break;
+       case UNW_X86_64_RDX:
+               id = PERF_REG_X86_DX;
+               break;
+       case UNW_X86_64_RCX:
+               id = PERF_REG_X86_CX;
+               break;
+       case UNW_X86_64_RBX:
+               id = PERF_REG_X86_BX;
+               break;
+       case UNW_X86_64_RSI:
+               id = PERF_REG_X86_SI;
+               break;
+       case UNW_X86_64_RDI:
+               id = PERF_REG_X86_DI;
+               break;
+       case UNW_X86_64_RBP:
+               id = PERF_REG_X86_BP;
+               break;
+       case UNW_X86_64_RSP:
+               id = PERF_REG_X86_SP;
+               break;
+       case UNW_X86_64_R8:
+               id = PERF_REG_X86_R8;
+               break;
+       case UNW_X86_64_R9:
+               id = PERF_REG_X86_R9;
+               break;
+       case UNW_X86_64_R10:
+               id = PERF_REG_X86_R10;
+               break;
+       case UNW_X86_64_R11:
+               id = PERF_REG_X86_R11;
+               break;
+       case UNW_X86_64_R12:
+               id = PERF_REG_X86_R12;
+               break;
+       case UNW_X86_64_R13:
+               id = PERF_REG_X86_R13;
+               break;
+       case UNW_X86_64_R14:
+               id = PERF_REG_X86_R14;
+               break;
+       case UNW_X86_64_R15:
+               id = PERF_REG_X86_R15;
+               break;
+       case UNW_X86_64_RIP:
+               id = PERF_REG_X86_IP;
+               break;
+       default:
+               pr_err("unwind: invalid reg id %d\n", regnum);
+               return -EINVAL;
+       }
+
+       return id;
+}
+#else
+int libunwind__arch_reg_id(int regnum)
+{
+       int id;
+
+       switch (regnum) {
+       case UNW_X86_EAX:
+               id = PERF_REG_X86_AX;
+               break;
+       case UNW_X86_EDX:
+               id = PERF_REG_X86_DX;
+               break;
+       case UNW_X86_ECX:
+               id = PERF_REG_X86_CX;
+               break;
+       case UNW_X86_EBX:
+               id = PERF_REG_X86_BX;
+               break;
+       case UNW_X86_ESI:
+               id = PERF_REG_X86_SI;
+               break;
+       case UNW_X86_EDI:
+               id = PERF_REG_X86_DI;
+               break;
+       case UNW_X86_EBP:
+               id = PERF_REG_X86_BP;
+               break;
+       case UNW_X86_ESP:
+               id = PERF_REG_X86_SP;
+               break;
+       case UNW_X86_EIP:
+               id = PERF_REG_X86_IP;
+               break;
+       default:
+               pr_err("unwind: invalid reg id %d\n", regnum);
+               return -EINVAL;
+       }
+
+       return id;
+}
+#endif /* HAVE_ARCH_X86_64_SUPPORT */