From d8aca3ff2501f9a77e22e5afb7a30380aed205af Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Fri, 16 Oct 2026 16:42:22 -0400
Subject: remove explicit framebuffer in kernel. reduce locking in syscalls

---
 hal/shmem.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'hal/shmem.c')

diff --git a/hal/shmem.c b/hal/shmem.c
index 3785c2e..2928a1b 100644
--- a/hal/shmem.c
+++ b/hal/shmem.c
@@ -18,3 +18,15 @@ shmem_new(jove_owned_obj_t *untyped_obj)
     memset(untyped, 0, untyped->limit);
     return 0;
 }
+
+inline size_t 
+shmem_numpages(jove_owned_obj_t *shmem_obj)
+{
+    return obj_getvalue(shmem_obj) & JOVE_SMHEM_MAXPAGES;
+}
+
+inline void*
+shmem_deref(jove_owned_obj_t *shmem_obj)
+{
+    return phys_tovirt(obj_getvalue(shmem_obj) & ~JOVE_SMHEM_MAXPAGES);
+}
-- 
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