diff --git a/libs/port/interlocked.c b/libs/port/interlocked.c
index 5e1dcf76a59..dbcac4f34c2 100644
--- a/libs/port/interlocked.c
+++ b/libs/port/interlocked.c
@@ -244,6 +244,57 @@ long interlocked_xchg_add( long *dest, long incr )
     _lwp_mutex_unlock( &interlocked_mutex );
     return retv;
 }
+
+#elif defined(__ALPHA__) && defined(__GNUC__)
+
+__ASM_GLOBAL_FUNC(interlocked_cmpxchg,
+                  "L0cmpxchg:\n\t"
+                  "ldq_l $0,0($16)\n\t"
+                  "cmpeq $0,$18,$1\n\t"
+                  "beq   $1,L1cmpxchg\n\t"
+                  "mov   $17,$0\n\t"
+                  "stq_c $0,0($16)\n\t"
+                  "beq   $0,L0cmpxchg\n\t"
+                  "mov   $18,$0\n"
+                  "L1cmpxchg:\n\t"
+                  "mb");
+
+__ASM_GLOBAL_FUNC(interlocked_cmpxchg_ptr,
+                  "L0cmpxchg_ptr:\n\t"
+                  "ldq_l $0,0($16)\n\t"
+                  "cmpeq $0,$18,$1\n\t"
+                  "beq   $1,L1cmpxchg_ptr\n\t"
+                  "mov   $17,$0\n\t"
+                  "stq_c $0,0($16)\n\t"
+                  "beq   $0,L0cmpxchg_ptr\n\t"
+                  "mov   $18,$0\n"
+                  "L1cmpxchg_ptr:\n\t"
+                  "mb");
+
+__ASM_GLOBAL_FUNC(interlocked_xchg,
+                  "L0xchg:\n\t"
+                  "ldq_l $0,0($16)\n\t"
+                  "mov   $17,$1\n\t"
+                  "stq_c $1,0($16)\n\t"
+                  "beq   $1,L0xchg\n\t"
+                  "mb");
+
+__ASM_GLOBAL_FUNC(interlocked_xchg_ptr,
+                  "L0xchg_ptr:\n\t"
+                  "ldq_l $0,0($16)\n\t"
+                  "mov   $17,$1\n\t"
+                  "stq_c $1,0($16)\n\t"
+                  "beq   $1,L0xchg_ptr\n\t"
+                  "mb");
+
+__ASM_GLOBAL_FUNC(interlocked_xchg_add,
+                  "L0xchg_add:\n\t"
+                  "ldq_l $0,0($16)\n\t"
+                  "addq  $0,$17,$1\n\t"
+                  "stq_c $1,0($16)\n\t"
+                  "beq   $1,L0xchg_add\n\t"
+                  "mb");
+
 #else
 # error You must implement the interlocked* functions for your CPU
 #endif
diff --git a/libs/wine/port.c b/libs/wine/port.c
index e2b664519e9..6cbdd37fa42 100644
--- a/libs/wine/port.c
+++ b/libs/wine/port.c
@@ -135,6 +135,13 @@ __ASM_GLOBAL_FUNC( wine_switch_to_stack,
                    "mr 1,5\n\t" /* stack */
                    "bctr\n\t" /* call ctr */
                    "1:\tb 1b"); /* loop */
+#elif defined(__ALPHA__) && defined(__GNUC__)
+__ASM_GLOBAL_FUNC( wine_switch_to_stack,
+                   "mov $16,$0\n\t" /* func */
+                   "mov $17,$16\n\t" /* arg */
+                   "mov $18,$30\n\t" /* stack */
+                   "jsr $31,($0),0\n\t" /* call func */
+                   "L1:\tbr $31,L1"); /* loop */
 #else
 #error You must implement wine_switch_to_stack for your platform
 #endif