--- files/patch-m4_pc__from__ucontext.m4	(nonexistent)
+++ files/patch-m4_pc__from__ucontext.m4	(working copy)
@@ -0,0 +1,10 @@ 
+--- m4/pc_from_ucontext.m4.orig	2019-09-01 20:36:55 UTC
++++ m4/pc_from_ucontext.m4
+@@ -21,6 +21,7 @@ AC_DEFUN([AC_PC_FROM_UCONTEXT],
+    pc_fields="$pc_fields uc_mcontext.gregs[[R15]]"     # Linux (arm old [untested])
+    pc_fields="$pc_fields uc_mcontext.arm_pc"           # Linux (arm new [untested])
+    pc_fields="$pc_fields uc_mcontext.mc_eip"           # FreeBSD (i386)
++   pc_fields="$pc_fields uc_mcontext.mc_srr0"          # FreeBSD (powerpc, powerpc64)
+    pc_fields="$pc_fields uc_mcontext.mc_rip"           # FreeBSD (x86_64 [untested])
+    pc_fields="$pc_fields uc_mcontext.__gregs[[_REG_EIP]]"  # NetBSD (i386)
+    pc_fields="$pc_fields uc_mcontext.__gregs[[_REG_RIP]]"  # NetBSD (x86_64)
--- files/patch-src_stacktrace__powerpc-inl.h	(nonexistent)
+++ files/patch-src_stacktrace__powerpc-inl.h	(working copy)
@@ -0,0 +1,11 @@ 
+--- src/stacktrace_powerpc-inl.h.orig	2019-12-01 18:35:43 UTC
++++ src/stacktrace_powerpc-inl.h
+@@ -107,7 +107,7 @@ int GetStackTrace(void** result, int max_depth, int sk
+       // Link Register is.  For DARWIN and AIX (used by apple and
+       // linux ppc64), it's in sp[2].  For SYSV (used by linux ppc),
+       // it's in sp[1].
+-#if defined(_CALL_AIX) || defined(_CALL_DARWIN)
++#if defined(_CALL_AIX) || defined(_CALL_DARWIN) || defined(_CALL_ELF)
+       result[n++] = *(sp+2);
+ #elif defined(_CALL_SYSV)
+       result[n++] = *(sp+1);