arch_has_block_step — does this CPU support user-mode block-step?
arch_has_block_step ( | void); |
If this is defined, then there must be a function declaration or inline
for user_enable_block_step, and arch_has_single_step must be defined
too. arch_has_block_step should evaluate to nonzero iff the machine
supports step-until-branch for user mode. It can be a constant or it
can test a CPU feature bit.