ARM_r3
DEFINE(S_R3, offsetof(struct pt_regs, ARM_r3));
{ "r3", 4, offsetof(struct pt_regs, ARM_r3)},
regs->ARM_r3, regs->ARM_r2,
regs->ARM_r3);
regs->ARM_r3 = context.arm_r3;
.arm_r3 = regs->ARM_r3,
regs->ARM_r0, regs->ARM_r1, regs->ARM_r2, regs->ARM_r3);