+ ENTRY(atomic_sub_8_nv)
+ ALTENTRY(atomic_sub_char_nv)
+ movl 4(%esp), %edx
+ movb (%edx), %al
+1:
+ movl 8(%esp), %ecx
+ subb %al, %cl
+ lock
+ cmpxchgb %cl, (%edx)
+ jne 1b
+ movzbl %cl, %eax
+ ret
+ SET_SIZE(atomic_sub_char_nv)
+ SET_SIZE(atomic_sub_8_nv)
+
+ ENTRY(atomic_sub_16_nv)
+ ALTENTRY(atomic_sub_short_nv)
+ movl 4(%esp), %edx
+ movw (%edx), %ax
+1:
+ movl 8(%esp), %ecx
+ subw %ax, %cx
+ lock
+ cmpxchgw %cx, (%edx)
+ jne 1b
+ movzwl %cx, %eax
+ ret
+ SET_SIZE(atomic_sub_short_nv)
+ SET_SIZE(atomic_sub_16_nv)
+
+ ENTRY(atomic_sub_32_nv)
+ ALTENTRY(atomic_sub_int_nv)
+ ALTENTRY(atomic_sub_ptr_nv)
+ ALTENTRY(atomic_sub_long_nv)
+ movl 4(%esp), %edx
+ movl (%edx), %eax
+1:
+ movl 8(%esp), %ecx
+ subl %eax, %ecx
+ lock
+ cmpxchgl %ecx, (%edx)
+ jne 1b
+ movl %ecx, %eax
+ ret
+ SET_SIZE(atomic_sub_long_nv)
+ SET_SIZE(atomic_sub_ptr_nv)
+ SET_SIZE(atomic_sub_int_nv)
+ SET_SIZE(atomic_sub_32_nv)
+