substituted tool to obtain target structure offsets (for asm)

Makefile

@@ -47,6 +47,7 @@ asm_ym2612 ?= 1
 asm_misc ?= 1
 asm_cdmemory ?= 1
 asm_mix ?= 1
+asm_32xdraw ?= 0 # currently defunct
 else # if not arm
 use_fame ?= 1
 use_cz80 ?= 1
@@ -194,10 +195,10 @@ LDFLAGS += -Wl,-Map=$(TARGET).map
 endif
 
 
-target_: $(TARGET)
+target_: pico/pico_int_o32.h $(TARGET)
 
 clean:
-	$(RM) $(TARGET) $(OBJS)
+	$(RM) $(TARGET) $(OBJS) pico/pico_int_o32.h
 	$(RM) -r .opk_data
 
 $(TARGET): $(OBJS)
@@ -210,8 +211,8 @@ endif
 pprof: platform/linux/pprof.c
 	$(CC) $(CFLAGS) -O2 -ggdb -DPPROF -DPPROF_TOOL -I../../ -I. $^ -o $@ $(LDFLAGS) $(LDLIBS)
 
-tools/textfilter: tools/textfilter.c
+pico/pico_int_o32.h:: tools/mkoffsets.sh
-	make -C tools/ textfilter
+	make -C tools/ XCC="$(CC)" XCFLAGS="$(CFLAGS)"
 
 .s.o:
 	$(CC) $(CFLAGS) -c $< -o $@

pico/pico_int_o32.h

@@ -1,28 +0,0 @@
-/* autogenerated by tools/mkoffsets, do not edit */
-#define OFS_Pico_video_reg   0x0000
-#define OFS_Pico_m_rotate    0x0040
-#define OFS_Pico_m_z80Run    0x0041
-#define OFS_Pico_m_dirtyPal  0x0046
-#define OFS_Pico_m_hardware  0x0047
-#define OFS_Pico_m_z80_reset 0x004f
-#define OFS_Pico_m_sram_reg  0x0049
-#define OFS_Pico_sv          0x008c
-#define OFS_Pico_sv_data     0x008c
-#define OFS_Pico_sv_start    0x0090
-#define OFS_Pico_sv_end      0x0094
-#define OFS_Pico_sv_flags    0x0098
-#define OFS_Pico_rom         0x033c
-#define OFS_Pico_romsize     0x0340
-#define OFS_EST_DrawScanline 0x00
-#define OFS_EST_rendstatus   0x04
-#define OFS_EST_DrawLineDest 0x08
-#define OFS_EST_HighCol      0x0c
-#define OFS_EST_HighPreSpr   0x10
-#define OFS_EST_Pico         0x14
-#define OFS_EST_PicoMem_vram 0x18
-#define OFS_EST_PicoMem_cram 0x1c
-#define OFS_EST_PicoOpt      0x20
-#define OFS_EST_Draw2FB      0x24
-#define OFS_EST_HighPal      0x28
-#define OFS_PMEM_vram        0x10000
-#define OFS_PMEM_vsram       0x22100

tools/Makefile

@@ -1,13 +1,10 @@
-CFLAGS = -Wall -ggdb
+TARGETS = amalgamate textfilter
-
-TARGETS = amalgamate textfilter mkoffsets
 OBJS = $(addsuffix .o,$(TARGETS))
 
 all: $(TARGETS)
+	CC="$(XCC)" CFLAGS="$(XCFLAGS)" ./mkoffsets.sh ../pico
 
 clean:
 	$(RM) $(TARGETS) $(OBJS)
 
-mkoffsets: CFLAGS += -m32 -I..
-
 .PHONY: clean all

tools/mkoffsets.sh

@@ -0,0 +1,82 @@
+# usage: mkoffsets <output dir>
+# automatically compute structure offsets for gcc targets in ELF format
+
+CC=${CC:-gcc}
+
+# endianess of target (automagically determined below)
+ENDIAN=
+
+compile_rodata ()
+{
+	$CC $CFLAGS -I .. -c /tmp/getoffs.c -o /tmp/getoffs.o || exit 1
+	rosect=$(readelf -S /tmp/getoffs.o | grep '\.rodata' |
+						sed 's/^[^.]*././;s/ .*//')
+	objcopy --dump-section $rosect=/tmp/getoffs.ro /tmp/getoffs.o || exit 1
+	ro=$(xxd -ps /tmp/getoffs.ro)
+	if [ "$ENDIAN" = "le" ]; then
+		# swap needed for le target
+		hex=""
+		for b in $(echo $ro | sed 's/\([0-9a-f]\{2\}\)/\1 /g'); do
+			hex=$b$hex;
+		done
+	else
+		hex=$ro
+	fi
+	rodata=$(printf "%d" 0x$hex)
+}
+
+get_define () # prefix struct member member...
+{
+	prefix=$1; shift
+	struct=$1; shift
+	field=$(echo $* | sed 's/ /./g')
+	name=$(echo $* | sed 's/ /_/g')
+	echo '#include "pico/pico_int.h"' > /tmp/getoffs.c
+	echo "static const struct $struct p;" >> /tmp/getoffs.c
+	echo "const int offs = (char *)&p.$field - (char*)&p;" >>/tmp/getoffs.c
+	compile_rodata
+	line=$(printf "#define %-20s 0x%04x" $prefix$name $rodata)
+}
+
+# determine endianess
+echo "const int one = 1;" >/tmp/getoffs.c
+compile_rodata
+ENDIAN=$(if [ "$rodata" -eq 1 ]; then echo be; else echo le; fi)
+# determine output file
+echo "const int vsz = sizeof(void *);" >/tmp/getoffs.c
+compile_rodata
+fn="${1:-.}/pico_int_o$((8*$rodata)).h"
+# output header
+echo "/* autogenerated by mkoffset.sh, do not edit */" >$fn
+echo "/* target endianess: $ENDIAN, compiled with: $CC $CFLAGS */" >>$fn
+# output offsets
+get_define OFS_Pico_ Pico video reg		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico m rotate		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico m z80Run		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico m dirtyPal		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico m hardware		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico m z80_reset		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico m sram_reg		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico sv			; echo "$line" >>$fn
+get_define OFS_Pico_ Pico sv data		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico sv start		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico sv end		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico sv flags		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico rom			; echo "$line" >>$fn
+get_define OFS_Pico_ Pico romsize		; echo "$line" >>$fn
+get_define OFS_Pico_ Pico est			; echo "$line" >>$fn
+
+get_define OFS_EST_ PicoEState DrawScanline	; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState rendstatus	; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState DrawLineDest	; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState HighCol		; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState HighPreSpr	; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState Pico		; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState PicoMem_vram	; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState PicoMem_cram	; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState PicoOpt		; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState Draw2FB		; echo "$line" >>$fn
+get_define OFS_EST_ PicoEState HighPal		; echo "$line" >>$fn
+
+get_define OFS_PMEM_ PicoMem vram		; echo "$line" >>$fn
+get_define OFS_PMEM_ PicoMem vsram		; echo "$line" >>$fn