http://www.ethernut.de/en/documents/arm-inline-asm.html
一个例子:
TRIMBYTE(dst, src) __asm__ __volatile__("USAT %[dstr] , #8, %[srcr]": [dstr] "=r" (dst) : [srcr] "r" (src));
http://www.ethernut.de/en/documents/arm-inline-asm.html
一个例子:
TRIMBYTE(dst, src) __asm__ __volatile__("USAT %[dstr] , #8, %[srcr]": [dstr] "=r" (dst) : [srcr] "r" (src));