Don’t try to use nonexistent atomic gadgets on arm

62f · Nov 10, 2018 · a724fb2 · a724fb2
1 parent 5777b4f
commit a724fb2
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/jit/gen.c b/jit/gen.c
@@ -318,6 +318,8 @@ static inline bool gen_op(struct gen_state *state, gadget_t *gadgets, enum arg a
 #define CPUID() g(cpuid)
 
 // atomic
+// TODO the gadgets currently don't exist on arm
+#if defined(__x86_64__)
 #define atomic_op(type, src, dst,z) load(src, z); op(atomic_##type, dst, z)
 #define ATOMIC_ADD(src, dst,z) atomic_op(add, src, dst, z)
 #define ATOMIC_OR(src, dst,z) atomic_op(or, src, dst, z)
@@ -331,6 +333,20 @@ static inline bool gen_op(struct gen_state *state, gadget_t *gadgets, enum arg a
 #define ATOMIC_CMPXCHG(src, dst,z) atomic_op(cmpxchg, src, dst, z)
 #define ATOMIC_XADD(src, dst,z) load(src, z); op(atomic_xadd, dst, z); store(src, z)
 
+#else
+#define ATOMIC_ADD ADD
+#define ATOMIC_OR OR
+#define ATOMIC_ADC ADC
+#define ATOMIC_SBB SBB
+#define ATOMIC_AND AND
+#define ATOMIC_SUB SUB
+#define ATOMIC_XOR XOR
+#define ATOMIC_INC INC
+#define ATOMIC_DEC DEC
+#define ATOMIC_CMPXCHG CMPXCHG
+#define ATOMIC_XADD XADD
+#endif
+
 // sse
 #define XORP(src, dst) UNDEFINED
 #define PSRLQ(src, dst) UNDEFINED