- VBE banked mode fixes backported from rbench

[dosdemo] / src / util_s.asm

diff --git a/src/util_s.asm b/src/util_s.asm
new file mode 100644 (file)
index 0000000..69c034a
--- /dev/null
+++ b/src/util_s.asm
@@ -0,0 +1,62 @@
+       section .text
+; foo_ are watcom functions, _foo are djgpp functions
+
+       global get_cs
+       global _get_cs
+       global get_cs_
+get_cs:
+_get_cs:
+get_cs_:
+       xor eax, eax
+       mov ax, cs
+       ret
+
+       global get_msr
+       global _get_msr
+get_msr:
+_get_msr:
+       push ebp
+       mov ebp, esp
+       push ebx
+       mov ecx, [ebp + 8]
+       rdmsr
+       mov ebx, [ebp + 12]
+       mov [ebx], eax
+       mov ebx, [ebp + 16]
+       mov [ebx], edx
+       pop ebx
+       pop ebp
+       ret
+
+       global get_msr_
+get_msr_:
+       push ebx
+       push edx
+       mov ecx, eax
+       rdmsr
+       pop ebx
+       mov [ebx], eax
+       pop ebx
+       mov [ebx], edx
+       ret
+
+       global set_msr
+       global _set_msr
+set_msr:
+_set_msr:
+       mov ecx, [esp + 4]
+       mov eax, [esp + 8]
+       mov edx, [esp + 12]
+       rdmsr
+       ret
+
+       global set_msr_
+set_msr_:
+       mov ecx, eax
+       mov eax, edx
+       mov edx, ebx
+       wrmsr
+       ret
+
+
+; vi:ft=nasm: