1 files changed, 77 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/dosasm.S b/apps/plugins/sdl/progs/quake/dosasm.S
new file mode 100644
index 0000000000..2633be9617
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/dosasm.S
@@ -0,0 +1,77 @@
+#include "asm_i386.h"
+
+.data
+fpenv:  .long   0, 0, 0, 0, 0, 0, 0, 0
+
+.text
+.globl  C(StartMSRInterval)
+C(StartMSRInterval):
+        movl    $0x11,%ecx      // read the CESR
+        .byte   0x0F
+        .byte   0x32            // RDMSR
+
+        andl    $0xFE3FFE3F,%eax        // stop both counters
+        .byte   0x0F
+        .byte   0x30            // WRMSR
+
+        movl    4(%esp),%eax    // point counter 0 to desired event, with counters
+        andl    $0x3F,%eax              //  still stopped
+        movl    $0x11,%ecx
+        .byte   0x0F
+        .byte   0x30            // WRMSR
+
+        movl    $0x12,%ecx      // set counter 0 to the value 0
+        subl    %eax,%eax
+        subl    %edx,%edx
+        .byte   0x0F
+        .byte   0x30            // WRMSR
+        
+        movl    4(%esp),%eax // restart counter 0 with selected event
+        andl    $0x3F,%eax
+        subl    %edx,%edx
+        orl             $0xC0,%eax
+        movl    $0x11,%ecx      // control and event select
+        .byte   0x0F
+        .byte   0x30            // WRMSR
+
+        ret
+
+.globl  C(EndMSRInterval)
+C(EndMSRInterval):
+        movl    $0x12,%ecx      // counter 0
+        .byte   0x0F
+        .byte   0x32            // RDMSR
+
+        ret                                     // lower 32 bits of count in %eax
+
+#if 0
+        .data
+Lxxx:   .long   0
+
+        .text
+
+.globl C(setstackcheck)
+C(setstackcheck):
+
+        movl    %esp,%eax
+        subl    $0x38000,%eax
+        movl    $0x5A5A5A5A,(%eax)
+        movl    %eax,Lxxx
+
+        ret
+
+
+.globl C(dostackcheck)
+C(dostackcheck):
+
+        movl    Lxxx,%edx
+        movl    $0,%eax
+
+        cmpl    $0x5A5A5A5A,(%edx)
+        jz              qqq
+        incl    %eax
+qqq:
+
+        ret
+#endif
+