ARM_r4
DEFINE(S_R4, offsetof(struct pt_regs, ARM_r4));
{ "r4", 4, offsetof(struct pt_regs, ARM_r4)},
regs->ARM_r5, regs->ARM_r4);
regs->ARM_r4 = context.arm_r4;
.arm_r4 = regs->ARM_r4,
regs->ARM_r4, regs->ARM_r5, regs->ARM_r6, regs->ARM_r7);