1 files changed, 144 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/include/libunwind-s390x.h b/src/third_party/unwind/dist/include/libunwind-s390x.h
new file mode 100644
index 00000000000..ebda40d57af
--- /dev/null
+++ b/src/third_party/unwind/dist/include/libunwind-s390x.h
@@ -0,0 +1,144 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2002-2004 Hewlett-Packard Co
+        Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+   Modified for s390x by Michael Munday <mike.munday@ibm.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#ifndef LIBUNWIND_H
+#define LIBUNWIND_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#include <sys/types.h>
+#include <inttypes.h>
+#include <ucontext.h>
+
+#define UNW_TARGET              s390x
+#define UNW_TARGET_S390X        1
+
+#define _U_TDEP_QP_TRUE 0       /* see libunwind-dynamic.h  */
+
+/* This needs to be big enough to accommodate "struct cursor", while
+   leaving some slack for future expansion.  Changing this value will
+   require recompiling all users of this library.  Stack allocation is
+   relatively cheap and unwind-state copying is relatively rare, so we
+   want to err on making it rather too big than too small.  */
+#define UNW_TDEP_CURSOR_LEN     384
+
+typedef uint64_t unw_word_t;
+typedef int64_t unw_sword_t;
+
+typedef double unw_tdep_fpreg_t;
+
+typedef enum
+  {
+    /* general purpose registers */
+    UNW_S390X_R0,
+    UNW_S390X_R1,
+    UNW_S390X_R2,
+    UNW_S390X_R3,
+    UNW_S390X_R4,
+    UNW_S390X_R5,
+    UNW_S390X_R6,
+    UNW_S390X_R7,
+    UNW_S390X_R8,
+    UNW_S390X_R9,
+    UNW_S390X_R10,
+    UNW_S390X_R11,
+    UNW_S390X_R12,
+    UNW_S390X_R13,
+    UNW_S390X_R14,
+    UNW_S390X_R15,
+
+    /* floating point registers */
+    UNW_S390X_F0,
+    UNW_S390X_F1,
+    UNW_S390X_F2,
+    UNW_S390X_F3,
+    UNW_S390X_F4,
+    UNW_S390X_F5,
+    UNW_S390X_F6,
+    UNW_S390X_F7,
+    UNW_S390X_F8,
+    UNW_S390X_F9,
+    UNW_S390X_F10,
+    UNW_S390X_F11,
+    UNW_S390X_F12,
+    UNW_S390X_F13,
+    UNW_S390X_F14,
+    UNW_S390X_F15,
+
+    /* PSW */
+    UNW_S390X_IP,
+
+    UNW_TDEP_LAST_REG = UNW_S390X_IP,
+
+    /* TODO: access, vector registers */
+
+    /* frame info (read-only) */
+    UNW_S390X_CFA,
+
+    UNW_TDEP_IP = UNW_S390X_IP,
+    UNW_TDEP_SP = UNW_S390X_R15,
+
+    /* TODO: placeholders */
+    UNW_TDEP_EH = UNW_S390X_R0,
+  }
+s390x_regnum_t;
+
+#define UNW_TDEP_NUM_EH_REGS    2       /* XXX Not sure what this means */
+
+typedef struct unw_tdep_save_loc
+  {
+    /* Additional target-dependent info on a save location.  */
+    char unused;
+  }
+unw_tdep_save_loc_t;
+
+/* On s390x, we can directly use ucontext_t as the unwind context.  */
+typedef ucontext_t unw_tdep_context_t;
+
+typedef struct
+  {
+    /* no s390x-specific auxiliary proc-info */
+    char unused;
+  }
+unw_tdep_proc_info_t;
+
+#include "libunwind-dynamic.h"
+#include "libunwind-common.h"
+
+#define unw_tdep_getcontext             UNW_ARCH_OBJ(getcontext)
+#define unw_tdep_is_fpreg               UNW_ARCH_OBJ(is_fpreg)
+
+extern int unw_tdep_getcontext (unw_tdep_context_t *);
+extern int unw_tdep_is_fpreg (int);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* LIBUNWIND_H */