[src/trunk]: src/sys/arch/x68k/stand/xxboot Reduce binary size as possible. ...

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/377cba631b3b
branches:  trunk
changeset: 974854:377cba631b3b
user:      isaki <isaki%NetBSD.org@localhost>
date:      Fri Aug 14 03:54:46 2020 +0000

description:
Reduce binary size as possible.  These reduce filesize about 20 words.
- Use word alignment (rather than longword alignment) for text/data section.
- Use short reference.  In the bootloader, all symbols can be expressed in
  short.

diffstat:

 sys/arch/x68k/stand/xxboot/Makefile.xxboot |  3 ++-
 sys/arch/x68k/stand/xxboot/xxboot.ldscript |  4 ++++
 2 files changed, 6 insertions(+), 1 deletions(-)

diffs (38 lines):

diff -r eb6a6f1199e0 -r 377cba631b3b sys/arch/x68k/stand/xxboot/Makefile.xxboot
--- a/sys/arch/x68k/stand/xxboot/Makefile.xxboot        Fri Aug 14 03:43:28 2020 +0000
+++ b/sys/arch/x68k/stand/xxboot/Makefile.xxboot        Fri Aug 14 03:54:46 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile.xxboot,v 1.16 2020/08/14 03:40:47 isaki Exp $
+#      $NetBSD: Makefile.xxboot,v 1.17 2020/08/14 03:54:46 isaki Exp $
 
 NOMAN=         # defined
 
@@ -40,6 +40,7 @@
 CPPFLAGS+= -nostdinc -I${.OBJDIR} -I${S}
 CPPFLAGS+= -I$M/stand/libiocs -I$M/stand/libsa -I$M/stand/common
 AFLAGS=           ${CFLAGS:M-[ID]*}
+AFLAGS+=   -Wa,-l
 LINKFLAGS=   -n -Bstatic -T ${.CURDIR}/../xxboot.ldscript
 LINKFLAGS+=  --defsym=TEXTADDR=$(TEXT)
 LINKFLAGS+=  --defsym=BOOT_TEXTADDR=$(BOOT_TEXT)
diff -r eb6a6f1199e0 -r 377cba631b3b sys/arch/x68k/stand/xxboot/xxboot.ldscript
--- a/sys/arch/x68k/stand/xxboot/xxboot.ldscript        Fri Aug 14 03:43:28 2020 +0000
+++ b/sys/arch/x68k/stand/xxboot/xxboot.ldscript        Fri Aug 14 03:54:46 2020 +0000
@@ -8,6 +8,8 @@
 {
   . = TEXTADDR;
   .text :
+  ALIGN(2)
+  SUBALIGN(2)
   {
     CREATE_OBJECT_SYMBOLS
     *(.text)
@@ -24,6 +26,8 @@
     _etext = .;
   }
   .data :
+  ALIGN(2)
+  SUBALIGN(2)
   {
     /* The first three sections are for SunOS dynamic linking.  */
     *(.dynamic)