Port % of execution code to C

zsnes/src/init.asm

@@ -34,7 +34,7 @@ EXTSYM NewEngEnForce
 EXTSYM PrintChar
 EXTSYM TextFile
 EXTSYM mode7tab
-EXTSYM per2exec
+EXTSYM Setper2exec,per2exec
 EXTSYM MovieCounter
 EXTSYM chaton
 EXTSYM JoyRead,JoyReadControl,joy4218,joy4219
@@ -204,7 +204,9 @@ NEWSYM init
     call copyexecloop
     call procexecloop
     ; SNES Init
+    pushad
     call Setper2exec
+    popad
     call Makemode7Table
     call makesprprtable
     cmp byte[fname],0
@@ -486,62 +488,6 @@ ebm db 166,95,66,223,17,11,103,180,156,68,108,120,138,55,203,205,178,210,39,252,
 
 SECTION .text
 
-;*******************************************************
-; Set percent to execute
-;*******************************************************
-NEWSYM Setper2exec
-    cmp byte[per2exec],100
-    jne .not100
-    ret
-.not100
-    ; Decrease standard % of execution by 5% to replace branch and 16bit
-    ;   cycle deductions
-    xor ax,ax
-    mov al,[opexec268]
-    mov bl,95
-    mul bl
-    mov bl,100
-    div bl
-    mov bl,[per2exec]
-    mul bl
-    mov bl,100
-    div bl
-    mov [opexec268b],al
-    xor ax,ax
-    mov al,[opexec358]
-    mov bl,87 ;82
-    mul bl
-    mov bl,100
-    div bl
-    mov bl,[per2exec]
-    mul bl
-    mov bl,100
-    div bl
-    mov [opexec358b],al
-    xor ax,ax
-    mov al,[opexec268cph]
-    mov bl,95
-    mul bl
-    mov bl,100
-    div bl
-    mov bl,[per2exec]
-    mul bl
-    mov bl,100
-    div bl
-    mov [opexec268cphb],al
-    xor ax,ax
-    mov al,[opexec358cph]
-    mov bl,87 ;82
-    mul bl
-    mov bl,100
-    div bl
-    mov bl,[per2exec]
-    mul bl
-    mov bl,100
-    div bl
-    mov [opexec358cphb],al
-    ret
-
 ;*******************************************************
 ; Read Input Device            Reads from Keyboard, etc.
 ;*******************************************************

zsnes/src/initc.c

@@ -18,6 +18,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
 #include <string.h>
+#include <windows.h>
 
 //C++ style code in C
 #define bool unsigned char
@@ -678,3 +679,12 @@ void headerhack()
   return;
 }
 
+extern unsigned char per2exec;
+
+void Setper2exec()
+{
+    opexec268 = opexec268*(per2exec*0.01);
+    opexec358 = opexec358*(per2exec*0.01);
+    opexec268cph = opexec268cph*(per2exec*0.01);
+    opexec358cph = opexec358cph*(per2exec*0.01);
+}