MemInjectObj¶

Maps part of a memory object into another space, typically one being set up.

Number	Selector	Blocking	Since
`0x0B` SVC_MANAGEMEMORY	`MNGMEM_INJECTOBJ (3)`	no	2.0

Err MemInjectObj(Handle kitten_space_handle, Handle mem_handle, VirtAddr dest_vaddr, size_t offset, size_t size, MemProt prot);

Registers: (space, &args) -> r0 status

The mapping holds its own reference, so the handle can be closed afterwards. Pass HANDLE_ANON as mem_handle for demand-zero memory.

Parameters¶

Name	Direction	Description
`kitten_space_handle`	in	Target space with PERM_CNTL.
`mem_handle`	in	Memory object in the caller's space, or HANDLE_ANON.
`dest_vaddr`	in	Page-aligned address in the target space.
`offset`	in	Byte offset into the object; ignored for HANDLE_ANON.
`size`	in	Bytes to map.
`prot`	in	Protection of the target mapping, never writable and executable. It also becomes the ceiling MemProtect() cannot raise in the target space.

ZUZU_OK, or an error code.

Error	Condition
`ERR_BADHANDLE`	A handle is not live.
`ERR_BADTYPE`	`kitten_space_handle` is not a space, or `mem_handle` is not memory.
`ERR_NOPERM`	Missing PERM_CNTL on the space or PERM_MAP on the object, or `prot` needs a PERM_WRITE / PERM_EXEC the object handle lacks.
`ERR_DEAD`	The target space has been torn down.
`ERR_BADARG`	Misaligned or out-of-range addresses, offset or size.
`ERR_BUSY`	The target range is already mapped.
`ERR_NOMEM`	Out of memory or page tables.