I often look at my map files to get a feel for how large my code is, and
have yet to have a problem with code size.
But...
I think that my Makefile _should_ tell sdcc to check the code size for
the processor, and the RAM size too.
First, I found the linker options -I and -C and added this in Makefile:
OVFL = "-Wl -I0x0800,-C0x4000"
Now Makefile looks like this (trimmed):
SDCC = sdcc -mstm8 -I../libs -L../libs -DSTM8103
OVFL = "-Wl -I0x0800,-C0x2000"
LIBS = ...
OBJS = ...
.rel.ihx :
$(SDCC) $(OVFL) $< $(LIBS)
I then reduced the code size from 8K to 0x0a00 for code that is just
over 0x0a00 in size. Here is the end of the map file:
00008A74 _clock_cal_get lib_clock
00008A97 _clock_cal_set lib_clock
But sdcc and linker do not complain!
Okay, I find the options --iram-size and --code-size and change my Makefile:
OVFL = --iram-size 1024 --code-size 0x0a00
The result is:
sdcc -mstm8 -I../libs -L../libs -DSTM8103 --iram-size 1024 --code-size
0x0a00 test_w1209.rel lib_stm8.lib
With no complaint.
I know I am missing something, but what is it?
Thanks!
-Richard
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