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| author | Jon Santmyer <jon@jonsantmyer.com> | 2026-10-09 10:24:41 -0400 |
|---|---|---|
| committer | Jon Santmyer <jon@jonsantmyer.com> | 2026-10-09 10:24:41 -0400 |
| commit | cc23ea5a4b38807e79aceb23e6f43e965926618f (patch) | |
| tree | 90142bb44186f4dad7bbd82d3d53655b835c822b /hal/shmem.c | |
| parent | 434ddcd907832b1febc7d70e4faa52109c7eb3bd (diff) | |
| download | jove-kernel-cc23ea5a4b38807e79aceb23e6f43e965926618f.tar.gz jove-kernel-cc23ea5a4b38807e79aceb23e6f43e965926618f.tar.bz2 jove-kernel-cc23ea5a4b38807e79aceb23e6f43e965926618f.zip | |
add basic scheduler logic. rename init rootdir indexes
Diffstat (limited to 'hal/shmem.c')
| -rw-r--r-- | hal/shmem.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/hal/shmem.c b/hal/shmem.c new file mode 100644 index 0000000..3785c2e --- /dev/null +++ b/hal/shmem.c @@ -0,0 +1,20 @@ +#include "api/error.h" +#include "hal/obj.h" +#include "lib/string.h" +#include "memory.h" + +int +shmem_new(jove_owned_obj_t *untyped_obj) +{ + jove_untyped_t *untyped = obj_deref(untyped_obj); + if((uintptr_t)untyped & 0xFFF) return -EALIGN; + if(untyped->limit & 0xFFF) return -EBADSIZE; + + size_t limit_pages = untyped->limit >> 12; + if(limit_pages > JOVE_SMHEM_MAXPAGES) return -ETOOBIG; + + obj_setvalue(untyped_obj, (uintptr_t)untyped | limit_pages); + obj_settype(untyped_obj, JOVE_OBJ_SHMEMORY); + memset(untyped, 0, untyped->limit); + return 0; +} |