【菜鸟求助】在keil C51中如何引用外部.A51文件中的汇编宏？

只看该作者 · 2015-2-5 10:46

在keil环境下，C文件需要引用一个外部的汇编宏，请教21朋友们怎么样可以做到？

亦或，在C51文件中如何定义一个嵌入的汇编宏？

为方便我贴下码源：
portSAVE_CONTEXT MACRO
/* Push ACC first, as when restoring the context it must be restored
last (it is used to set the IE register). */
PUSH ACC
/* Store the IE register then disable interrupts. */
PUSH IE
PUSH B
PUSH DPX
PUSH DPH
PUSH DPL
PUSH PSW
PUSH AR0
PUSH AR1
PUSH AR2
PUSH AR3
PUSH AR4
PUSH AR5
PUSH AR6
PUSH AR7
ENDM

只看该作者 · 2015-2-5 10:49

求助，

只看该作者 · 2015-2-5 11:06

在SDCC中是如下定义的：

/*
* Macro to push the current execution context onto the stack, before the stack
* is moved to XRAM.
*/
#define portSAVE_CONTEXT() \
{ \
_asm \
/* Push ACC first, as when restoring the context it must be restored \
last (it is used to set the IE register). */ \
push ACC \
/* Store the IE register then disable interrupts. */ \
push IE \
clr _EA \
push DPL \
push DPH \
push b \
push ar2 \
push ar3 \
push ar4 \
push ar5 \
push ar6 \
push ar7 \
push ar0 \
push ar1 \
push PSW \
_endasm; \
PSW = 0; \
_asm \
push _bp \
_endasm; \
}
/*-----------------------------------------------------------*/

在keil中我把_asm 替换为#pragma asm 会提示#出错。