userland x86_64: ASSERT_EQ show actual and expected values

userland/arch/x86_64/common_arch.h

@@ -3,6 +3,7 @@
 #ifndef COMMON_ARCH_H
 #define COMMON_ARCH_H
 
+#if 0
 #define ASSERT_EQ(reg, const) \
     push %rax; \
     push %rbx; \
@@ -13,6 +14,19 @@
     pop %rax; \
     ASSERT(je); \
 ;
+#endif
+
+#define ASSERT_EQ(reg, const) \
+    mov reg, %rdi; \
+    mov const, %rsi; \
+    ASSERT_EQ_DO(64); \
+;
+
+#define ASSERT_EQ_DO(bits) \
+    call assert_eq_ ## bits; \
+    cmp $0, %rax; \
+    ASSERT(je); \
+;
 
 # TODO
 ##define ASSERT_MEMCMP(s1, s2, n) \