Rename cpu_physical_memory_write_rom() to address_space_write_rom()

The API of cpu_physical_memory_write_rom() is odd, because it
takes an AddressSpace, unlike all the other cpu_physical_memory_*
access functions. Rename it to address_space_write_rom(), and
bring its API into line with address_space_write().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20181122133507.30950-3-peter.maydell@linaro.org

include/exec/cpu-common.h

@@ -111,8 +111,6 @@ bool cpu_physical_memory_is_io(hwaddr phys_addr);
  */
 void qemu_flush_coalesced_mmio_buffer(void);
 
-void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
-                                   const uint8_t *buf, int len);
 void cpu_flush_icache_range(hwaddr start, int len);
 
 extern struct MemoryRegion io_mem_rom;

include/exec/memory.h

@@ -1792,6 +1792,32 @@ MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
                                 MemTxAttrs attrs,
                                 const uint8_t *buf, int len);
 
+/**
+ * address_space_write_rom: write to address space, including ROM.
+ *
+ * This function writes to the specified address space, but will
+ * write data to both ROM and RAM. This is used for non-guest
+ * writes like writes from the gdb debug stub or initial loading
+ * of ROM contents.
+ *
+ * Note that portions of the write which attempt to write data to
+ * a device will be silently ignored -- only real RAM and ROM will
+ * be written to.
+ *
+ * Return a MemTxResult indicating whether the operation succeeded
+ * or failed (eg unassigned memory, device rejected the transaction,
+ * IOMMU fault).
+ *
+ * @as: #AddressSpace to be accessed
+ * @addr: address within that address space
+ * @attrs: memory transaction attributes
+ * @buf: buffer with the data transferred
+ * @len: the number of bytes to write
+ */
+MemTxResult address_space_write_rom(AddressSpace *as, hwaddr addr,
+                                    MemTxAttrs attrs,
+                                    const uint8_t *buf, int len);
+
 /* address_space_ld*: load from an address space
  * address_space_st*: store to an address space
  *