Using CPU flags in C

[jh@clesse.com]

Hi,

I don't really know where to look for this information.
Is it possible to use the CPU status flags to communicate information 
between inline assembly and the normal C control flow?
For example, an asm statement would set the Z flag and then the C code 
would jump (for example with beq or bne in the case of ARM) without 
using any additional variable and comparison instruction. Using a dummy 
variable is no issue if the generated code is just the conditional 
branch instruction.

Best regards,
JH