Hi there,
I was using Codewarrior targeting Cortex-R4 CPU to build Firmware. When doing a division coprocessor was used and caused exception.
Here is the division in C:
u8 i, j = 8;
i = j / 3;
Disassembly:
(u8 i, j = 8;)
mov r5, #0x8
(i = j / 3;)
mov r1, #0x3
mov r0, r5
mrc p6, 1, r0, c0, c1, 4
and r4, r0, #0xff
When running mrc, exception occurred.
Does anybody have any idea why it happens? Anyway to disable coprocessor in this operation?
Thanks.
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