Remove unneccesary PPC assembly code

milkytracker · May 8, 2020 · ba5699e · ba5699e
1 parent 85cecbd
commit ba5699e
Showing 1 changed file with 5 additions and 74 deletions.
diff --git a/src/ppui/fastfill.h b/src/ppui/fastfill.h
@@ -28,88 +28,19 @@
  *
  */
 
-#ifdef __GNUC__
-static __attribute__((noinline)) void fill_dword(pp_uint32* buff, pp_uint32 dw, pp_uint32 len)
-#else
+#include <string.h>
+
 static inline void fill_dword(pp_uint32* buff, pp_uint32 dw, pp_uint32 len)
-#endif
 {
-#if defined(__ppc__) && defined(__GNUC__)
-	// PPC assembly FTW!!1!
-	// r3 = buff
-	// r4 = dw
-	// r5 = len
-	asm volatile("li r9, 0\n"
-				 "srawi r10, r5, 2\n"
-				 "nop\n"				// align loop start to 16 byte boundary
-				 "cmpw cr7,r10,r9\n"
-				 "nop\n"				// see above
-				 "beq cr7,$+36\n"
-				 "2:\n"
-				 "stw r4,0(r3)\n"
-				 "stw r4,4(r3)\n"
-				 "stw r4,8(r3)\n"
-				 "stw r4,12(r3)\n"
-				 "addi r10,r10,-1\n"
-				 "addi r3,r3,16\n"		// advance by 16
-				 "cmpw cr7,r10,r9\n"
-				 "bne cr7,2b\n"				 				
-				 "clrlwi r11, r5, 30\n"
-				 "nop\n"				// align loop start to 16 byte boundary
-				 "cmpw cr7,r11,r9\n"
-				 "beq cr7,$+24\n"
-				 "1:\n"
-				 "stw r4,0(r3)\n"
-				 "addi r11,r11,-1\n"
-				 "addi r3,r3,4\n"		// advance by 4
-				 "cmpw cr7,r11,r9\n"
-				 "bne cr7,1b"); 
-#else
-	pp_uint32 newlen = len >> 2;
-	pp_uint32 remlen = len & 3;
-	if (newlen)
-	{
-		do
-		{
-			*buff = dw;
-			*(buff+1) = dw;
-			*(buff+2) = dw;
-			*(buff+3) = dw;
-			buff+=4;
-		} while (--newlen);
-	}
-	if (remlen)
-	{
-		do
-		{
-			*buff++ = dw;
-		} while (--remlen);
-	}
-#endif
+	memset(buff, dw, len);
 }
 
-#ifdef __GNUC__
-static __attribute__((noinline)) void fill_dword_vertical(pp_uint32* buff, pp_uint32 dw, pp_uint32 len, pp_uint32 pitch)
-#else
 static inline void fill_dword_vertical(pp_uint32* buff, pp_uint32 dw, pp_uint32 len, pp_uint32 pitch)
-#endif
 {
-#if defined(__ppc__) && defined(__GNUC__)
-	asm volatile("nop\n" // align loop start to 16 byte boundary
-				 "nop\n" // same
-				 "nop\n" // same
-				 "li r9,0\n"
-				 "1:\n"
-				 "stw r4,0(r3)\n"
-				 "addi r5,r5,-1\n"
-				 "add r3,r3,r6\n"
-				 "cmpw cr7,r5,r9\n"
-				 "bne cr7,1b"); 
-#else
+	pitch >>= 2;
 	do
 	{
 		*buff = dw;
-		buff+=(pitch>>2);
+		buff += pitch;
 	} while (--len);
-#endif
 }