1 files changed, 76 insertions, 0 deletions
diff --git a/src/remote/mac/missing-functions.c b/src/remote/mac/missing-functions.c
new file mode 100644
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+++ b/src/remote/mac/missing-functions.c
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+/* Copyright (C) 2022 Hewlett-Packard Co.
+     Contributed by David Mosberger-Tang <davidm@hpl.hp.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.  */
+
+// This is minimal implementation functions files required to cross compile
+// libunwind on MacOS for UNW_REMOTE_ONLY application.
+
+#include <pthread.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stdatomic.h>
+#include "libunwind_i.h"
+#include "compiler.h"
+
+unw_addr_space_t UNW_OBJ(local_addr_space);
+
+unw_accessors_t *
+unw_get_accessors (unw_addr_space_t as)
+{
+  if (!atomic_load(&tdep_init_done))
+    tdep_init ();
+  return &as->acc;
+}
+
+unw_accessors_t *
+unw_get_accessors_int (unw_addr_space_t as)
+{
+  return unw_get_accessors(as);
+}
+
+#if defined(TARGET_AMD64) && !defined(HOST_AMD64)
+#define X86_64_SCF_NONE 0
+#endif
+
+#if defined(TARGET_ARM64) && !defined(HOST_ARM64)
+#define AARCH64_SCF_NONE 0
+#endif
+
+int
+unw_is_signal_frame (unw_cursor_t *cursor)
+{
+  struct cursor *c = (struct cursor *) cursor;
+#ifdef TARGET_AMD64
+  return c->sigcontext_format != X86_64_SCF_NONE;
+#elif defined(TARGET_ARM64)
+  return c->sigcontext_format != AARCH64_SCF_NONE;
+#else
+  #error Unexpected target
+#endif
+}
+
+int
+UNW_OBJ(handle_signal_frame) (unw_cursor_t *cursor)
+{
+  return -UNW_EBADFRAME;
+}