svn commit: r318860 - in head/sys: dev/sound/pcm tools/sound

[Hans Petter Selasky]

Author: hselasky
Date: Thu May 25 05:23:47 2017
New Revision: 318860
URL: https://svnweb.freebsd.org/changeset/base/318860

Log:
  Declare the "snd_fxdiv_table" once. This shaves around 24Kbytes of
  binary data from sound.ko and the kernel.
  
  MFC after:		3 days

Modified:
  head/sys/dev/sound/pcm/buffer.c
  head/sys/tools/sound/snd_fxdiv_gen.awk

Modified: head/sys/dev/sound/pcm/buffer.c
==============================================================================
--- head/sys/dev/sound/pcm/buffer.c	Thu May 25 05:02:43 2017	(r318859)
+++ head/sys/dev/sound/pcm/buffer.c	Thu May 25 05:23:47 2017	(r318860)
@@ -35,6 +35,7 @@
 #include "feeder_if.h"
 
 #define SND_USE_FXDIV
+#define	SND_DECLARE_FXDIV
 #include "snd_fxdiv_gen.h"
 
 SND_DECLARE_FILE("$FreeBSD$");

Modified: head/sys/tools/sound/snd_fxdiv_gen.awk
==============================================================================
--- head/sys/tools/sound/snd_fxdiv_gen.awk	Thu May 25 05:02:43 2017	(r318859)
+++ head/sys/tools/sound/snd_fxdiv_gen.awk	Thu May 25 05:23:47 2017	(r318860)
@@ -108,7 +108,10 @@ BEGIN {
 	printf(" * 508 = SND_CHN_MAX * PCM_32_BPS, which is why....\n");
 	printf(" */\n\n");
 
-	printf("static const uint32_t snd_fxdiv_table[][2] = {\n");
+	printf("extern const uint32_t snd_fxdiv_table[%d][2];\n\n", SND_MAX_ALIGN + 1);
+
+	printf("#ifdef SND_DECLARE_FXDIV\n");
+	printf("const uint32_t snd_fxdiv_table[%d][2] = {\n", SND_MAX_ALIGN + 1);
 
 	for (i = 1; i <= SND_MAX_ALIGN; i++) {
 		if (aligns[i] != 1)
@@ -120,7 +123,7 @@ BEGIN {
 		    i, r["mul"], r["shift"]);
 	}
 
-	printf("};\n\n");
+	printf("};\n#endif\n\n");
 
 	printf("#define SND_FXDIV_MAX\t\t0x%08x\n", FXONE);
 	printf("#define SND_FXDIV(x, y)\t\t(((uint32_t)(x) *\t\t\t\\\n");