1 files changed, 69 insertions, 0 deletions
diff --git a/devel/gdb/files/commit-8399425f5f b/devel/gdb/files/commit-8399425f5f
new file mode 100644
index 000000000000..6545579f01a9
--- /dev/null
+++ b/devel/gdb/files/commit-8399425f5f
@@ -0,0 +1,69 @@
+commit 8399425f5f472ad8e630bb30ad2dbefeddbb68b7
+Author: John Baldwin <jhb@FreeBSD.org>
+Date:   Tue Mar 12 13:39:02 2019 -0700
+
+    Support TLS variables on FreeBSD/powerpc.
+    
+    Derive the pointer to the DTV array from the %r2 register on 32-bit
+    powerpc and %r13 on 64-bit powerpc.
+    
+    gdb/ChangeLog:
+    
+            * ppc-fbsd-tdep.c (ppcfbsd_get_thread_local_address): New.
+            (ppcfbsd_init_abi): Install gdbarch
+            "fetch_tls_load_module_address" and "get_thread_local_address"
+            methods.
+
+diff --git gdb/ppc-fbsd-tdep.c gdb/ppc-fbsd-tdep.c
+index c21a52c898..290bd1fd88 100644
+--- gdb/ppc-fbsd-tdep.c
++++ gdb/ppc-fbsd-tdep.c
+@@ -279,6 +279,39 @@ ppcfbsd_return_value (struct gdbarch *gdbarch, struct value *function,
+ 					   regcache, readbuf, writebuf);
+ }
+ 
++/* Implement the "get_thread_local_address" gdbarch method.  */
++
++static CORE_ADDR
++ppcfbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
++				  CORE_ADDR lm_addr, CORE_ADDR offset)
++{
++  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++  struct regcache *regcache;
++  int tp_offset, tp_regnum;
++
++  regcache = get_thread_arch_regcache (ptid, gdbarch);
++
++  if (tdep->wordsize == 4)
++    {
++      tp_offset = 0x7008;
++      tp_regnum = PPC_R0_REGNUM + 2;
++    }
++  else
++    {
++      tp_offset = 0x7010;
++      tp_regnum = PPC_R0_REGNUM + 13;
++    }
++  target_fetch_registers (regcache, tp_regnum);
++
++  ULONGEST tp;
++  if (regcache->cooked_read (tp_regnum, &tp) != REG_VALID)
++    error (_("Unable to fetch tcb pointer"));
++
++  /* tp points to the end of the TCB block.  The first member of the
++     TCB is the pointer to the DTV array.  */
++  CORE_ADDR dtv_addr = tp - tp_offset;
++  return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
++}
+ 
+ static void
+ ppcfbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+@@ -322,6 +355,8 @@ ppcfbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+ 
+   set_gdbarch_fetch_tls_load_module_address (gdbarch,
+ 					     svr4_fetch_objfile_link_map);
++  set_gdbarch_get_thread_local_address (gdbarch,
++					ppcfbsd_get_thread_local_address);
+ }
+ 
+ void