__SP
gdb_regs[__SP] = kernel_regs->sp;
kernel_regs->sp = gdb_regs[__SP];
#define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0)
#define test_thread_64bit_stack(__SP) \
((test_thread_flag(TIF_32BIT) && !thread32_stack_is_64bit(__SP)) ? \