Calculate the optimal memory location for overlay plugins, and use plugin.lds for linking them. This gets rid of hand-adjusted archos.lds, making it easy to use overlay plugins on other lowmem targets. * Fix some duplicate and incorrect dependencies. * Change the way libs are filtered, so that a lib can be specified more than once. This allows to get rid of explicitly linking gcc-support.o, fixing empty plugins on some simulator platforms.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20163 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/chessbox/archos.lds

@@ -1,44 +0,0 @@
-#include "config.h"
-
-/* linker script for chessbox as an overlay,
- * only used/ necessary for SH-based archos targets */
-
-OUTPUT_FORMAT(elf32-sh)
-
-#define DRAMORIG 0x09000000
-#define PLUGIN_LENGTH PLUGIN_BUFFER_SIZE
-
-#define OVERLAY_LENGTH 0x30000
-#define OVERLAY_ORIGIN (DRAMORIG + (MEMORYSIZE * 0x100000) - PLUGIN_LENGTH - OVERLAY_LENGTH)
-
-MEMORY
-{
-   OVERLAY_RAM : ORIGIN = OVERLAY_ORIGIN, LENGTH = OVERLAY_LENGTH
-}
-
-SECTIONS
-{
-    .header : {
-        _plugin_start_addr = .;
-        KEEP(*(.header))
-    } > OVERLAY_RAM
-
-    .text : {
-        *(.text*)
-    } > OVERLAY_RAM
-
-    .rodata : {
-        *(.rodata*)
-    } > OVERLAY_RAM
-
-    .data : {
-        *(.data*)
-    } > OVERLAY_RAM
-
-    .bss : {
-        *(.bss*)
-        *(COMMON)
-        . = ALIGN(0x4);
-        _plugin_end_addr = .;
-    } > OVERLAY_RAM
-}

apps/plugins/chessbox/chessbox.make

@@ -17,20 +17,17 @@ OTHER_SRC += $(CHESSBOX_SRC)
 
 ifndef SIMVER
 ifneq (,$(strip $(foreach tgt,RECORDER ONDIO,$(findstring $(tgt),$(TARGET)))))
-    ## archos recorder targets
-    CHESSBOX_INLDS := $(CHESSBOX_SRCDIR)/archos.lds
+    ### lowmem targets
     ROCKS += $(CHESSBOX_OBJDIR)/chessbox.ovl
+    CHESSBOX_OUTLDS = $(CHESSBOX_OBJDIR)/chessbox.link
+    CHESSBOX_OVLFLAGS = -T$(CHESSBOX_OUTLDS) -Wl,--gc-sections -Wl,-Map,$(basename $@).map
 else
     ### all other targets
-    CHESSBOX_INLDS := $(APPSDIR)/plugins/plugin.lds
     ROCKS += $(CHESSBOX_OBJDIR)/chessbox.rock
 endif
-    CHESSBOX_OVLFLAGS = -T$(CHESSBOX_OUTLDS) -Wl,--gc-sections -Wl,-Map,$(basename $@).map
-    CHESSBOX_OUTLDS = $(CHESSBOX_OBJDIR)/chessbox.lds
 else
     ### simulator
     ROCKS += $(CHESSBOX_OBJDIR)/chessbox.rock
-    CHESSBOX_OVLFLAGS = $(SHARED_FLAG) # <-- from Makefile
 endif
 
 ifeq ($(CPU),sh)
@@ -40,15 +37,18 @@ else
 CHESSBOXFLAGS = $(filter-out -O%,$(PLUGINFLAGS)) -O2
 endif
 
-$(CHESSBOX_OUTLDS): $(CHESSBOX_INLDS) $(CHESSBOX_OBJ)
-	$(call PRINTS,PP $(<F))$(call preprocess2file,$<,$@)
+$(CHESSBOX_OBJDIR)/chessbox.rock: $(CHESSBOX_OBJ)
 
-$(CHESSBOX_OBJDIR)/chessbox.rock: $(CHESSBOX_OBJ) $(CHESSBOX_OUTLDS) $(PLUGINBITMAPLIB)
+$(CHESSBOX_OBJDIR)/chessbox.refmap: $(CHESSBOX_OBJ)
 
-$(CHESSBOX_OBJDIR)/chessbox.ovl: $(CHESSBOX_OBJ) $(CHESSBOX_OUTLDS) $(PLUGINBITMAPLIB)
+$(CHESSBOX_OUTLDS): $(PLUGIN_LDS) $(CHESSBOX_OBJDIR)/chessbox.refmap
+	$(call PRINTS,PP $(@F))$(call preprocess2file,$<,$@,-DOVERLAY_OFFSET=$(shell \
+		$(TOOLSDIR)/ovl_offset.pl $(CHESSBOX_OBJDIR)/chessbox.refmap))
+
+$(CHESSBOX_OBJDIR)/chessbox.ovl: $(CHESSBOX_OBJ) $(CHESSBOX_OUTLDS)
 	$(SILENT)$(CC) $(PLUGINFLAGS) -o $(basename $@).elf \
 		$(filter %.o, $^) \
-		$(filter %.a, $^) \
+		$(filter %.a, $+) \
 		-lgcc $(CHESSBOX_OVLFLAGS)
 	$(call PRINTS,LD $(@F))$(OC) -O binary $(basename $@).elf $@