This API will be used in the following patch. Signed-off-by: Wen Congyang <we...@cn.fujitsu.com> --- cpu-common.h | 2 ++ exec.c | 20 ++++++++++++++++++++ 2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/cpu-common.h b/cpu-common.h index 3fe44d2..0309137 100644 --- a/cpu-common.h +++ b/cpu-common.h @@ -70,6 +70,8 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)); void cpu_unregister_map_client(void *cookie); +bool is_io_addr(target_phys_addr_t phys_addr); + /* Coalesced MMIO regions are areas where write operations can be reordered. * This usually implies that write operations are side-effect free. This allows * batching which can make a major impact on performance when using diff --git a/exec.c b/exec.c index b02199b..227d2ea 100644 --- a/exec.c +++ b/exec.c @@ -4688,3 +4688,23 @@ void dump_exec_info(FILE *f, fprintf_function cpu_fprintf) #undef env #endif + +bool is_io_addr(target_phys_addr_t phys_addr) +{ + ram_addr_t pd; + PhysPageDesc *p; + + p = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + if (!p) { + pd = IO_MEM_UNASSIGNED; + } else { + pd = p->phys_offset; + } + + if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) { + /* I/O region */ + return true; + } + + return false; +} -- 1.7.1