--- configure.orig	2021-12-17 23:29:39.000000000 +0800
+++ configure	2022-05-07 14:46:05.000000000 +0800
@@ -5318,7 +5318,7 @@
 rm -f a.out
 
 case "$build:$target" in
-    i?86-apple-darwin*:powerpc-apple-darwin*)
+    i?86-apple-darwin*:powerpc*-apple-darwin*)
                                 cross_compiling=yes
         ;;
 esac
@@ -6461,8 +6461,12 @@
         aarch64)
             CPU_ARCH=aarch64
             ;;
-        *)
-            CPU_ARCH=ppc
+        powerpc*|ppc*)
+            if test -n "$USE_64"; then
+                CPU_ARCH=ppc64
+            else
+                CPU_ARCH=ppc
+            fi
             ;;
     esac
     if test "`echo $CC | grep -c '\-arch '`" = "0"; then


--- pr/include/md/_darwin.h.orig	2021-12-17 23:29:39.000000000 +0800
+++ pr/include/md/_darwin.h	2022-05-07 14:32:28.000000000 +0800
@@ -24,6 +24,8 @@
 #define _PR_SI_ARCHITECTURE "x86-64"
 #elif defined(__ppc__)
 #define _PR_SI_ARCHITECTURE "ppc"
+#elif defined(__ppc64__)
+#define _PR_SI_ARCHITECTURE "ppc64"
 #elif defined(__arm__)
 #define _PR_SI_ARCHITECTURE "arm"
 #elif defined(__aarch64__)
@@ -94,6 +96,19 @@
 #define _MD_ATOMIC_ADD(ptr, val)    _PR_DarwinPPC_AtomicAdd(ptr, val)
 #endif /* __ppc__ */
 
+#ifdef __ppc64__
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_DarwinPPC64_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT(val)   _PR_DarwinPPC64_AtomicIncrement(val)
+extern PRInt32 _PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT(val)   _PR_DarwinPPC64_AtomicDecrement(val)
+extern PRInt32 _PR_DarwinPPC64_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC64_AtomicSet(val, newval)
+extern PRInt32 _PR_DarwinPPC64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD(ptr, val)    _PR_DarwinPPC64_AtomicAdd(ptr, val)
+#endif /* __ppc64__ */
+
 #ifdef __i386__
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()


--- pr/src/md/unix/os_Darwin.s.orig	2021-12-17 23:29:39.000000000 +0800
+++ pr/src/md/unix/os_Darwin.s	2022-05-07 14:10:47.000000000 +0800
@@ -10,4 +10,6 @@
 #include "os_Darwin_x86_64.s"
 #elif defined(__ppc__)
 #include "os_Darwin_ppc.s"
+#elif defined(__ppc64__)
+#include "os_Darwin_ppc64.s"
 #endif


--- pr/src/md/unix/os_Darwin_ppc64.s.orig	2021-12-17 23:29:39.000000000 +0800
+++ pr/src/md/unix/os_Darwin_ppc64.s	2022-05-07 14:32:22.000000000 +0800
@@ -13,56 +13,56 @@
 .text
 
 #
-# PRInt32 __PR_DarwinPPC_AtomicIncrement(PRInt32 *val);
+# PRInt32 __PR_DarwinPPC64_AtomicIncrement(PRInt32 *val);
 #
         .align  2
-        .globl  __PR_DarwinPPC_AtomicIncrement
-        .private_extern __PR_DarwinPPC_AtomicIncrement
-__PR_DarwinPPC_AtomicIncrement:
-        lwarx   r4,0,r3
+        .globl  __PR_DarwinPPC64_AtomicIncrement
+        .private_extern __PR_DarwinPPC64_AtomicIncrement
+__PR_DarwinPPC64_AtomicIncrement:
+        ldarx   r4,0,r3
         addi    r0,r4,1
-        stwcx.  r0,0,r3
-        bne-    __PR_DarwinPPC_AtomicIncrement
+        stdcx.  r0,0,r3
+        bne-    __PR_DarwinPPC64_AtomicIncrement
         mr      r3,r0
         blr
 
 #
-# PRInt32 __PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
+# PRInt32 __PR_DarwinPPC64_AtomicDecrement(PRInt32 *val);
 #
         .align  2
-        .globl  __PR_DarwinPPC_AtomicDecrement
-        .private_extern __PR_DarwinPPC_AtomicDecrement
-__PR_DarwinPPC_AtomicDecrement:
-        lwarx   r4,0,r3
+        .globl  __PR_DarwinPPC64_AtomicDecrement
+        .private_extern __PR_DarwinPPC64_AtomicDecrement
+__PR_DarwinPPC64_AtomicDecrement:
+        ldarx   r4,0,r3
         addi    r0,r4,-1
-        stwcx.  r0,0,r3
-        bne-    __PR_DarwinPPC_AtomicDecrement
+        stdcx.  r0,0,r3
+        bne-    __PR_DarwinPPC64_AtomicDecrement
         mr      r3,r0
         blr
 
 #
-# PRInt32 __PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval);
+# PRInt32 __PR_DarwinPPC64_AtomicSet(PRInt32 *val, PRInt32 newval);
 #
         .align  2
-        .globl  __PR_DarwinPPC_AtomicSet
-        .private_extern __PR_DarwinPPC_AtomicSet
-__PR_DarwinPPC_AtomicSet:
-        lwarx   r5,0,r3
-        stwcx.  r4,0,r3
-        bne-    __PR_DarwinPPC_AtomicSet
+        .globl  __PR_DarwinPPC64_AtomicSet
+        .private_extern __PR_DarwinPPC64_AtomicSet
+__PR_DarwinPPC64_AtomicSet:
+        ldarx   r5,0,r3
+        stdcx.  r4,0,r3
+        bne-    __PR_DarwinPPC64_AtomicSet
         mr      r3,r5
         blr
 
 #
-# PRInt32 __PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+# PRInt32 __PR_DarwinPPC64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #
         .align  2
-        .globl  __PR_DarwinPPC_AtomicAdd
-        .private_extern __PR_DarwinPPC_AtomicAdd
-__PR_DarwinPPC_AtomicAdd:
-        lwarx   r5,0,r3
+        .globl  __PR_DarwinPPC64_AtomicAdd
+        .private_extern __PR_DarwinPPC64_AtomicAdd
+__PR_DarwinPPC64_AtomicAdd:
+        ldarx   r5,0,r3
         add     r0,r4,r5
-        stwcx.  r0,0,r3
-        bne-    __PR_DarwinPPC_AtomicAdd
+        stdcx.  r0,0,r3
+        bne-    __PR_DarwinPPC64_AtomicAdd
         mr      r3,r0
         blr


--- pr/include/pratom.h.orig	2021-12-17 23:29:39.000000000 +0800
+++ pr/include/pratom.h	2022-05-07 14:10:22.000000000 +0800
@@ -99,7 +99,7 @@
 
 #elif ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)) && \
       ((defined(__APPLE__) && \
-           (defined(__ppc__) || defined(__i386__) || defined(__x86_64__))) || \
+           (defined(__ppc__) || defined(__ppc64__) || defined(__i386__) || defined(__x86_64__))) || \
        (defined(__linux__) && \
            ((defined(__i386__) && \
            defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) || \