cc05c43ad9
Define an API so that devices can register MemoryRegionOps whose read and write callback functions are passed an arbitrary pointer to some transaction attributes and can return a success-or-failure status code. This will allow us to model devices which: * behave differently for ARM Secure/NonSecure memory accesses * behave differently for privileged/unprivileged accesses * may return a transaction failure (causing a guest exception) for erroneous accesses This patch defines the new API and plumbs the attributes parameter through to the memory.c public level functions io_mem_read() and io_mem_write(), where it is currently dummied out. The success/failure response indication is also propagated out to io_mem_read() and io_mem_write(), which retain the old-style boolean true-for-error return. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> |
||
|---|---|---|
| .. | ||
| user | ||
| address-spaces.h | ||
| cpu_ldst_template.h | ||
| cpu_ldst_useronly_template.h | ||
| cpu_ldst.h | ||
| cpu-all.h | ||
| cpu-common.h | ||
| cpu-defs.h | ||
| cputlb.h | ||
| exec-all.h | ||
| gdbstub.h | ||
| gen-icount.h | ||
| helper-gen.h | ||
| helper-head.h | ||
| helper-proto.h | ||
| helper-tcg.h | ||
| hwaddr.h | ||
| ioport.h | ||
| memattrs.h | ||
| memory-internal.h | ||
| memory.h | ||
| poison.h | ||
| ram_addr.h | ||
| softmmu-semi.h | ||
| spinlock.h | ||