Hi all concerned:

 

this test code I given below:  AARCH32

Test function

{

volatile unsigned int val0 = 0;

volatile unsigned int val1 = 0;

 

asm volatile(“mrrc p15, 1, %0, %1, c15” : “=r”(val0), “=r”(val1))

val0 &= ~(1<<6);

val1 &= ~(1<<6);

asm volatile(“mcrr p15, 1, %0, %1, c15” : “=r”(val0), “=r”(val1));

}

 

After compiling, the result is:

 

mrrc 15, 1, r2, r3, cr15

str r2, [fp, #-28]

str r3, [fp, #-24]

ldr r3, [fp, #-28]

bic r3, r3, #64;

str r3, [fp, #-28]

ldr r3, [fp, #-24]

bic r3, r3, #64

str r3, [fp, #-24]

mcrr 15, 1, r2, r3, cr15

 

 

obviously , it is not what I expect.  I have val0 an vl1  two vars, but the compiling result is only one val takes effect.

 

especia I have to mention  is AARCH32.

thanks.

 

 

Peter

_______________________________________________
linaro-toolchain mailing list
linaro-toolchain@lists.linaro.org
http://lists.linaro.org/mailman/listinfo/linaro-toolchain