6809: Switch to -Os

We've updated the helpers so can now do this.

A minimal build 6809 image currently weighs in at 24K code, 8K data. Some
of this is the CPU, some the calling conventions, and some gcc.

diff --git a/Kernel/Makefile b/Kernel/Makefile
index 7382edb..8254407 100644 (file)
--- a/Kernel/Makefile
+++ b/Kernel/Makefile
@@ -45,7 +45,7 @@ export CROSS_AS=m6809-unknown-as
 export CROSS_LD=lwlink
 export CROSS_CC = m6809-unknown-gcc
 #export CROSS_CCOPTS=-Wall -O2 -I$(ROOT_DIR)/cpu-6809 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include
-export CROSS_CCOPTS=-c -Wall -O2 -msoft-reg-count=0 -mfar-stack-param -I$(ROOT_DIR)/cpu-6809 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include
+export CROSS_CCOPTS=-c -Wall -Os -msoft-reg-count=0 -mfar-stack-param -I$(ROOT_DIR)/cpu-6809 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include
 export CROSS_CC_SEG1=-mcode-section=.text -mfar-code-page=1
 export CROSS_CC_SEG2=-mcode-section=.text2 -mfar-code-page=2
 export CROSS_CC_SEGDISC=-mcode-section=.discard -mfar-code-page=3