_REG_R3
gr[_REG_R3 + i] = va_arg(ap, int);
gr[_REG_R3 + i] = va_arg(ap, int);
gr[_REG_R3 + i] = va_arg(ap, long);
gr[_REG_R3] = tf->tf_reg[3];
tf->tf_reg[3] = gr[_REG_R3];
gr[_REG_R3] = tf->tf_r3;
tf->tf_r3 = gr[_REG_R3];
#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R3])
gr[_REG_R3] = tf->tf_r3;
tf->tf_r3 = gr[_REG_R3];
gr[_REG_R3] = tf->tf_r3;
tf->tf_r3 = gr[_REG_R3];
gr[_REG_R3] = luc->luc_mcontext.arm_r3;
luc->luc_mcontext.arm_r3 = gr[_REG_R3];