diff options
| -rw-r--r-- | exec.c | 10 | ||||
| -rw-r--r-- | include/exec/cpu-common.h | 1 |
2 files changed, 11 insertions, 0 deletions
@@ -2297,6 +2297,16 @@ static void *qemu_ram_ptr_length(RAMBlock *ram_block, ram_addr_t addr, return ramblock_ptr(block, addr); } +/* Return the offset of a hostpointer within a ramblock */ +ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host) +{ + ram_addr_t res = (uint8_t *)host - (uint8_t *)rb->host; + assert((uintptr_t)host >= (uintptr_t)rb->host); + assert(res < rb->max_length); + + return res; +} + /* * Translates a host ptr back to a RAMBlock, a ram_addr and an offset * in that RAMBlock. diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index 74341b19d2..0d861a6289 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -68,6 +68,7 @@ ram_addr_t qemu_ram_addr_from_host(void *ptr); RAMBlock *qemu_ram_block_by_name(const char *name); RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset, ram_addr_t *offset); +ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host); void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev); void qemu_ram_unset_idstr(RAMBlock *block); const char *qemu_ram_get_idstr(RAMBlock *rb); |