--- a/dyncallback/dyncall_callback_ppc32.S	Tue May 02 03:00:55 2017 +0200
+++ b/dyncallback/dyncall_callback_ppc32.S	Tue May 02 03:49:43 2017 +0200
@@ -25,16 +25,16 @@
 
 #include "../portasm/portasm-ppc.S"
 
-	.machine ppc
-	.text
-	.align 2
+.machine ppc
+.text
+.align 2
 
 /* Struct DCCallback */
 
-DCB_THUNK 	= 0
-DCB_HANDLER     = 24
-DCB_CLEANUP     = 28
-DCB_USERDATA    = 32
+DCB_THUNK    = 0
+DCB_HANDLER  = 24
+DCB_CLEANUP  = 28
+DCB_USERDATA = 32
 
 /* Struct DCArgs */
 
@@ -74,30 +74,30 @@
 /* --------------------------------------------------------------------------
 
 Input:
-	r1    	Stack Pointer            
-	r3-r10	Integer Arguments        
-	f1-f8 	Floating-point Arguments 
-	r11 	Thunk Pointer            
+	r1      Stack Pointer            
+	r3-r10  Integer Arguments        
+	f1-f8   Floating-point Arguments 
+	r11     Thunk Pointer            
 
 */
-	
+
 	/* prolog */
 
-	mflr	r0			
-	stw	r0,      SP_LR(r1)	/* store return address */
-	addi	r12, r1, SP_PAR         /* temporary r12: parameter area on callers stack frame */
+	mflr    r0
+	stw     r0,     SP_LR(r1)  /* store return address */
+	addi    r12,r1, SP_PAR     /* temporary r12: parameter area on callers stack frame */
 	stwu    r1, -FRAMESIZE(r1)
-	
-	stw	r3, SP_IREGS + 0*4(r1)	/* spill 8 integer parameter registers */
-	stw	r4, SP_IREGS + 1*4(r1)
-	stw	r5, SP_IREGS + 2*4(r1)
+
+	stw     r3, SP_IREGS + 0*4(r1)  /* spill 8 integer parameter registers */
+	stw     r4, SP_IREGS + 1*4(r1)
+	stw     r5, SP_IREGS + 2*4(r1)
 	stw     r6, SP_IREGS + 3*4(r1)
 	stw     r7, SP_IREGS + 4*4(r1)
 	stw     r8, SP_IREGS + 5*4(r1)
 	stw     r9, SP_IREGS + 6*4(r1)
 	stw     r10,SP_IREGS + 7*4(r1)
-	
-        stfd    f1, SP_FREGS + 0*8(r1)	/* spill 8 (of 13) float parameter registers */
+
+	stfd    f1, SP_FREGS + 0*8(r1)  /* spill 8 (of 13) float parameter registers */
 	stfd    f2, SP_FREGS + 1*8(r1)
 	stfd    f3, SP_FREGS + 2*8(r1)
 	stfd    f4, SP_FREGS + 3*8(r1)
@@ -106,39 +106,39 @@
 	stfd    f7, SP_FREGS + 6*8(r1)
 	stfd    f8, SP_FREGS + 7*8(r1)
 
-	stw	r12, SP_SP(r1)		/* init stack pointer */
-	xor	r0, r0, r0		/* init register counters */
-	stw	r0, SP_ICNT(r1)
-	stw	r0, SP_FCNT(r1)
-	stw     r0, SP_RESULT(r1)	/* init result object */
-        stw     r0, SP_RESULT + 4(r1)
-					/* invoke callback handler */
-	mr	r3, r11	                /* arg 1: DCCallback* pcb (r11 is thunk pointer) */
-	addi	r4, r1, SP_ARGS		/* arg 2: DCArgs* args 		*/
-	addi	r5, r1, SP_RESULT	/* arg 3: DCValue* result	*/
-	lwz	r6, DCB_USERDATA(r11)   /* arg 4: void* userdata 	*/
+	stw     r12,SP_SP(r1)         /* init stack pointer */
+	xor     r0, r0, r0            /* init register counters */
+	stw     r0, SP_ICNT(r1)
+	stw     r0, SP_FCNT(r1)
+	stw     r0, SP_RESULT(r1)     /* init result object */
+	stw     r0, SP_RESULT + 4(r1)
+	/* invoke callback handler */
+	mr      r3, r11               /* arg 1: DCCallback* pcb (r11 = thunk ptr) */
+	addi    r4, r1, SP_ARGS       /* arg 2: DCArgs* args    */
+	addi    r5, r1, SP_RESULT     /* arg 3: DCValue* result */
+	lwz     r6, DCB_USERDATA(r11) /* arg 4: void* userdata  */
 
-					/* branch-and-link to DCCallback.handler */
-	lwz	r12,  DCB_HANDLER(r11)
-	mtctr	r12
+	/* branch-and-link to DCCallback.handler */
+	lwz     r12,  DCB_HANDLER(r11)
+	mtctr   r12
 	bctrl
-					/* check result type */	
-	cmpi	cr0, r3, 'f
-	beq	.f32
-	cmpi	cr0, r3, 'd
-	beq	.f64
+	/* check result type */
+	cmpi    cr0, r3, 'f
+	beq .f32
+	cmpi    cr0, r3, 'd
+	beq .f64
 .i64:
-	lwz    r3, SP_RESULT     (r1)
-	lwz    r4, SP_RESULT + 4 (r1) 
+	lwz     r3, SP_RESULT     (r1)
+	lwz     r4, SP_RESULT + 4 (r1) 
 .end:
-	lwz    r1, SP_PREV(r1)	/* restore stack pointer */
-	lwz    r0, SP_LR(r1)	/* load link register with return address */
-	mtlr   r0
-	blr			/* branch back to link register */
-.f32:	
-	lfs	f1, SP_RESULT(r1)
-	b	.end
+	lwz     r1, SP_PREV(r1)  /* restore stack pointer */
+	lwz     r0, SP_LR(r1)    /* load link register with return address */
+	mtlr    r0
+	blr                      /* branch back to link register */
+.f32:
+	lfs     f1, SP_RESULT(r1)
+	b .end
 .f64:
-	lfd	f1, SP_RESULT(r1)
-	b	.end
-	
+	lfd     f1, SP_RESULT(r1)
+	b .end
+