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-rw-r--r--cpukit/libdl/rtl-unwind-arm.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/cpukit/libdl/rtl-unwind-arm.c b/cpukit/libdl/rtl-unwind-arm.c
new file mode 100644
index 0000000000..35361fe8d5
--- /dev/null
+++ b/cpukit/libdl/rtl-unwind-arm.c
@@ -0,0 +1,65 @@
+#include "rtl-unwind-arm.h"
+
+bool
+rtems_rtl_elf_unwind_parse (const rtems_rtl_obj* obj,
+ const char* name,
+ uint32_t flags)
+{
+ /*
+ * We location the EH sections in section flags.
+ */
+ return false;
+}
+
+bool
+rtems_rtl_elf_unwind_register (rtems_rtl_obj* obj)
+{
+ return true;
+}
+
+bool
+rtems_rtl_elf_unwind_deregister (rtems_rtl_obj* obj)
+{
+ obj->loader = NULL;
+ return true;
+}
+
+/*
+ * A weak reference is in libgcc, provide a real version and provide a way to
+ * manage loaded modules.
+ *
+ * Passed in the return address and a reference to the number of records
+ * found. We set the start of the exidx data and the number of records.
+ */
+_Unwind_Ptr __gnu_Unwind_Find_exidx (_Unwind_Ptr return_address,
+ int* nrec) __attribute__ ((__noinline__,
+ __used__,
+ __noclone__));
+
+_Unwind_Ptr __gnu_Unwind_Find_exidx (_Unwind_Ptr return_address,
+ int* nrec)
+{
+ rtems_rtl_data* rtl;
+ rtems_chain_node* node;
+ __EIT_entry* exidx_start = &__exidx_start;
+ __EIT_entry* exidx_end = &__exidx_end;
+
+ rtl = rtems_rtl_lock ();
+
+ node = rtems_chain_first (&rtl->objects);
+ while (!rtems_chain_is_tail (&rtl->objects, node)) {
+ rtems_rtl_obj* obj = (rtems_rtl_obj*) node;
+ if (rtems_rtl_obj_text_inside (obj, (void*) return_address)) {
+ exidx_start = (__EIT_entry*) obj->eh_base;
+ exidx_end = (__EIT_entry*) (obj->eh_base + obj->eh_size);
+ break;
+ }
+ node = rtems_chain_next (node);
+ }
+
+ rtems_rtl_unlock ();
+
+ *nrec = exidx_end - exidx_start;
+
+ return (_Unwind_Ptr) exidx_start;
+}