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Customized crt0 has been introduced to fix some SDCC glitches.

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matsutsuka 2007-09-29 03:57:07 +00:00
parent a6527b34d9
commit 1e6ac84151
2 changed files with 63 additions and 10 deletions
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25
cpu/z80/Makefile.z80
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@ -2,13 +2,12 @@
# Makefile for z80/SDCC # Makefile for z80/SDCC
# @author Takahide Matsutsuka <markn@markn.org> # @author Takahide Matsutsuka <markn@markn.org>
# #
# $Id: Makefile.z80,v 1.7 2007/09/19 12:41:33 matsutsuka Exp $ # $Id: Makefile.z80,v 1.8 2007/09/29 03:57:07 matsutsuka Exp $
# #
### Compiler definitions ### Compiler definitions
CC = sdcc CC = sdcc
LD = sdcc LD = link-z80
#LD = link-z80
AS = as-z80 AS = as-z80
AR = sdcclib AR = sdcclib
OBJCOPY = objcopy OBJCOPY = objcopy
@ -21,17 +20,21 @@ CUSTOM_RULE_LINK=1
### Default flags ### Default flags
CFLAGS += --std-c99 --vc -mz80 CFLAGS += --std-c99 --vc -mz80
# --peep-file $(CONTIKI_CPU)/z80peephole.def
ASFLAGS += ASFLAGS +=
LDFLAGS += LDFLAGS += -mz80 --out-fmt-ihx --no-std-crt0
AROPTS = -a AROPTS = -a
### CPU-dependent cleanup files
CLEAN += *.lnk *.sym *.lib contiki.ihx
### CPU-dependent directories ### CPU-dependent directories
CONTIKI_CPU_DIRS = . dev lib CONTIKI_CPU_DIRS = . dev lib
### CPU-dependent source files ### CPU-dependent source files
CONTIKI_SOURCEFILES += strcasecmp.c mtarch.c uip_arch.c \ CONTIKI_SOURCEFILES += strcasecmp.c mtarch.c uip_arch.c \
libconio_z80.c log-conio.c rs232.c rs232-slip.c libconio_z80.c log-conio.c rs232.c
CONTIKI_ASMFILES += uip_arch-asm.S CONTIKI_ASMFILES += uip_arch-asm.S crt0.S
CONTIKI_CASMOBJECTFILES = ${addprefix $(OBJECTDIR)/,$(CONTIKI_CASMFILES:.cS=.o)} CONTIKI_CASMOBJECTFILES = ${addprefix $(OBJECTDIR)/,$(CONTIKI_CASMFILES:.cS=.o)}
@ -55,9 +58,11 @@ $(OBJECTDIR)/%.o: %.cS
endif endif
#CUSTOM_RULE_ALLOBJS_TO_TARGETLIB #CUSTOM_RULE_ALLOBJS_TO_TARGETLIB
contiki-$(TARGET).a: $(CONTIKI_OBJECTFILES) $(PROJECT_OBJECTFILES) $(CONTIKI_ASMOBJECTFILES) $(CONTIKI_CASMOBJECTFILES) contiki-$(TARGET).lib: $(CONTIKI_OBJECTFILES) $(PROJECT_OBJECTFILES) $(CONTIKI_ASMOBJECTFILES) $(CONTIKI_CASMOBJECTFILES)
for target in $^; do $(AR) $(AROPTS) $@ $$target; done rm -f $@
for target in $^; do echo $$target >> $@; done
#CUSTOM_RULE_LINK #CUSTOM_RULE_LINK
contiki.ihex: contiki-$(TARGET).a contiki.ihx: contiki-$(TARGET).lib
$(LD) $(LDFLAGS) -DAUTOSTART_ENABLE $(CONTIKI_TARGET_MAIN) -lcontiki-$(TARGET).a -o $@ $(CC) $(LDFLAGS) -o $@ $(OBJECTDIR)/crt0.o -lcontiki-$(TARGET).lib
$(LD) -nf contiki

48
cpu/z80/crt0.S Normal file
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@ -0,0 +1,48 @@
;; crt0.S for Contiki
.module crt0
.globl _main
.area _HEADER (ABS)
.org 0
jp init
;; Ordering of segments for the linker.
.area _HOME
.area _CODE
.area _GSINIT
.area _GSFINAL
.area _DATA
.area _DATAFINAL
.area _BSS
.area _HEAP
.area _CODE
init::
;; Clear global variables
ld hl, #_datastart
ld bc, #_dataend
_clear_loop:
ld a, h
sub b
jr nz, _clear_next
ld a, l
sub c
jr z, _clear_exit
_clear_next:
ld (hl), #0
inc hl
jr _clear_loop
_clear_exit:
;; Initialize global variables
call gsinit
jp _main
.area _GSINIT
gsinit::
.area _GSFINAL
ret
.area _DATA
_datastart::
.area _DATAFINAL
_dataend::