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authorKartik Agaram <vc@akkartik.com>2019-09-14 01:42:29 -0700
committerKartik Agaram <vc@akkartik.com>2019-09-14 01:45:55 -0700
commit46bb1d3157f9ad575c83a4bfa1e32b0d21bc8546 (patch)
tree28918f653d7cf970d33d5592047ef663289aca40 /kernel.soso/utils.asm
parentded2b24ce28f4a9df75ce40117f0f06f09574369 (diff)
downloadmu-46bb1d3157f9ad575c83a4bfa1e32b0d21bc8546.tar.gz
5650 - support a second OS: soso
https://github.com/ozkl/soso

+ Much smaller than Linux; builds instantly
+ Supports graphics
- No network support
- Doesn't work on a cloud server (yet?)
Diffstat (limited to 'kernel.soso/utils.asm')
-rw-r--r--kernel.soso/utils.asm18
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel.soso/utils.asm b/kernel.soso/utils.asm
new file mode 100644
index 00000000..568bfb02
--- /dev/null
+++ b/kernel.soso/utils.asm
@@ -0,0 +1,18 @@
+[GLOBAL readEip]
+readEip:
+    pop eax
+    jmp eax
+
+[GLOBAL disablePaging]
+disablePaging:
+    mov edx, cr0
+    and edx, 0x7fffffff
+    mov cr0, edx
+    ret
+
+[GLOBAL enablePaging]
+enablePaging:
+    mov edx, cr0
+    or edx, 0x80000000
+    mov cr0, edx
+    ret