Customized crt0 has been introduced to fix some SDCC glitches.
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@ -2,13 +2,12 @@
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# Makefile for z80/SDCC
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# @author Takahide Matsutsuka <markn@markn.org>
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#
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# $Id: Makefile.z80,v 1.7 2007/09/19 12:41:33 matsutsuka Exp $
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# $Id: Makefile.z80,v 1.8 2007/09/29 03:57:07 matsutsuka Exp $
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#
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### Compiler definitions
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CC = sdcc
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LD = sdcc
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#LD = link-z80
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LD = link-z80
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AS = as-z80
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AR = sdcclib
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OBJCOPY = objcopy
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@ -21,17 +20,21 @@ CUSTOM_RULE_LINK=1
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### Default flags
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CFLAGS += --std-c99 --vc -mz80
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# --peep-file $(CONTIKI_CPU)/z80peephole.def
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ASFLAGS +=
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LDFLAGS +=
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LDFLAGS += -mz80 --out-fmt-ihx --no-std-crt0
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AROPTS = -a
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### CPU-dependent cleanup files
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CLEAN += *.lnk *.sym *.lib contiki.ihx
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### CPU-dependent directories
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CONTIKI_CPU_DIRS = . dev lib
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### CPU-dependent source files
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CONTIKI_SOURCEFILES += strcasecmp.c mtarch.c uip_arch.c \
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libconio_z80.c log-conio.c rs232.c rs232-slip.c
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CONTIKI_ASMFILES += uip_arch-asm.S
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libconio_z80.c log-conio.c rs232.c
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CONTIKI_ASMFILES += uip_arch-asm.S crt0.S
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CONTIKI_CASMOBJECTFILES = ${addprefix $(OBJECTDIR)/,$(CONTIKI_CASMFILES:.cS=.o)}
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@ -55,9 +58,11 @@ $(OBJECTDIR)/%.o: %.cS
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endif
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#CUSTOM_RULE_ALLOBJS_TO_TARGETLIB
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contiki-$(TARGET).a: $(CONTIKI_OBJECTFILES) $(PROJECT_OBJECTFILES) $(CONTIKI_ASMOBJECTFILES) $(CONTIKI_CASMOBJECTFILES)
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for target in $^; do $(AR) $(AROPTS) $@ $$target; done
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contiki-$(TARGET).lib: $(CONTIKI_OBJECTFILES) $(PROJECT_OBJECTFILES) $(CONTIKI_ASMOBJECTFILES) $(CONTIKI_CASMOBJECTFILES)
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rm -f $@
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for target in $^; do echo $$target >> $@; done
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#CUSTOM_RULE_LINK
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contiki.ihex: contiki-$(TARGET).a
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$(LD) $(LDFLAGS) -DAUTOSTART_ENABLE $(CONTIKI_TARGET_MAIN) -lcontiki-$(TARGET).a -o $@
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contiki.ihx: contiki-$(TARGET).lib
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$(CC) $(LDFLAGS) -o $@ $(OBJECTDIR)/crt0.o -lcontiki-$(TARGET).lib
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$(LD) -nf contiki
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48
cpu/z80/crt0.S
Normal file
48
cpu/z80/crt0.S
Normal file
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@ -0,0 +1,48 @@
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;; crt0.S for Contiki
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.module crt0
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.globl _main
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.area _HEADER (ABS)
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.org 0
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jp init
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;; Ordering of segments for the linker.
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.area _HOME
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.area _CODE
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.area _GSINIT
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.area _GSFINAL
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.area _DATA
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.area _DATAFINAL
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.area _BSS
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.area _HEAP
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.area _CODE
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init::
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;; Clear global variables
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ld hl, #_datastart
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ld bc, #_dataend
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_clear_loop:
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ld a, h
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sub b
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jr nz, _clear_next
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ld a, l
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sub c
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jr z, _clear_exit
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_clear_next:
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ld (hl), #0
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inc hl
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jr _clear_loop
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_clear_exit:
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;; Initialize global variables
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call gsinit
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jp _main
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.area _GSINIT
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gsinit::
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.area _GSFINAL
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ret
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.area _DATA
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_datastart::
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.area _DATAFINAL
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_dataend::
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