0001-Support-dynamic-unwind-info-on-ARM.patch

From 67604ad18b260ed24dbee664803296b590e624b2 Mon Sep 17 00:00:00 2001
From: Yichao Yu <yyc1992@gmail.com>
Date: Fri, 30 Sep 2016 00:40:56 -0400
Subject: [PATCH] Support dynamic unwind info on ARM

---
 src/arm/Gstep.c       | 10 ++++++++--
 src/mi/Gdyn-extract.c |  1 +
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/arm/Gstep.c b/src/arm/Gstep.c
index 79f2dd2..5b2b329 100644
--- a/src/arm/Gstep.c
+++ b/src/arm/Gstep.c
@@ -45,8 +45,14 @@ arm_exidx_step (struct cursor *c)
   /* mark PC unsaved */
   c->dwarf.loc[UNW_ARM_R15] = DWARF_NULL_LOC;
 
-  if ((ret = tdep_find_proc_info (&c->dwarf, c->dwarf.ip, 1)) < 0)
-     return ret;
+  /* check dynamic info first --- it overrides everything else */
+  ret = unwi_find_dynamic_proc_info (c->dwarf.as, c->dwarf.ip, &c->dwarf.pi, 1,
+                                     c->dwarf.as_arg);
+  if (ret == -UNW_ENOINFO)
+    {
+      if ((ret = tdep_find_proc_info (&c->dwarf, c->dwarf.ip, 1)) < 0)
+        return ret;
+    }
 
   if (c->dwarf.pi.format != UNW_INFO_FORMAT_ARM_EXIDX)
     return -UNW_ENOINFO;
diff --git a/src/mi/Gdyn-extract.c b/src/mi/Gdyn-extract.c
index c8ae7a0..5f7682e 100644
--- a/src/mi/Gdyn-extract.c
+++ b/src/mi/Gdyn-extract.c
@@ -49,6 +49,7 @@ unwi_extract_dynamic_proc_info (unw_addr_space_t as, unw_word_t ip,
 
     case UNW_INFO_FORMAT_TABLE:
     case UNW_INFO_FORMAT_REMOTE_TABLE:
+    case UNW_INFO_FORMAT_ARM_EXIDX:
     case UNW_INFO_FORMAT_IP_OFFSET:
 #ifdef tdep_search_unwind_table
       /* call platform-specific search routine: */
-- 
2.10.0