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*<br />
* use bad_save_user_regs for abort/prefetch/undef/swi ...<br />
* use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling<br />
*/<br />
.macro bad_save_user_regs<br />
.macro和后面的.endm相对应,其语法是:<br />
图表 19 macro 的语法<br />
所以,此处就相当于一个无参数的宏bad_save_user_regs,也就相当于一个函数了。<br />
即<br />
sp<br />
sub sp, sp, #S_FRAME_SIZE<br />
= sp- S_FRAME_SIZE<br />
= sp - 72<br />
stmia<br />
stmia sp, {r0 - r12} @ Calling r0-r12<br />
stmia的语法为:
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