From 7db9cdd24e884d70f3444fcd3abdf87b0df24479 Mon Sep 17 00:00:00 2001
From: Jeff Johnston <jjohnstn@redhat.com>
Date: Wed, 22 Feb 2006 18:02:54 +0000
Subject: [PATCH] 2006-02-22  Nathan Sidwell  <nathan@codesourcery.com>

        * m68k/Makefile.in (CF_SCRIPTS): New.
        (all): Add CF_SCRIPTS.
        (m5208evb.ld, m5213evb.ld, m5235evb.ld, m5272c3.ld,
        m5282evb.ld): New targets
        (install): Iterate over CF_SCRIPTS.
        * m68k/crt0.S: Don't use dbra on any cf chips.
        * m68k/dbug-cf.sc: New.
---
 libgloss/ChangeLog        |  10 ++++
 libgloss/m68k/Makefile.in |  22 +++++++-
 libgloss/m68k/crt0.S      |   2 +-
 libgloss/m68k/dbug-cf.sc  | 112 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 144 insertions(+), 2 deletions(-)
 create mode 100644 libgloss/m68k/dbug-cf.sc

diff --git a/libgloss/ChangeLog b/libgloss/ChangeLog
index f3e323deb..391aae251 100644
--- a/libgloss/ChangeLog
+++ b/libgloss/ChangeLog
@@ -1,3 +1,13 @@
+2006-02-22  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* m68k/Makefile.in (CF_SCRIPTS): New.
+	(all): Add CF_SCRIPTS.
+	(m5208evb.ld, m5213evb.ld, m5235evb.ld, m5272c3.ld,
+	m5282evb.ld): New targets
+	(install): Iterate over CF_SCRIPTS.
+	* m68k/crt0.S: Don't use dbra on any cf chips.
+	* m68k/dbug-cf.sc: New.
+
 2006-02-07  Paul Brook  <paul@codesourcery.com>
 
 	* arm/crt0.S: Add Thumb-2 startup code.
diff --git a/libgloss/m68k/Makefile.in b/libgloss/m68k/Makefile.in
index 5df402288..8faf5ffcf 100644
--- a/libgloss/m68k/Makefile.in
+++ b/libgloss/m68k/Makefile.in
@@ -123,6 +123,8 @@ IDPGDB_OBJS=	leds.o idp-inbyte.o idp-gdb-outbyte.o mc68ec.o
 DBUG_BSP=	libdbug.a
 DBUG_OBJS=	dbug-exit.o dbug-inbyte.o dbug-outbyte.o
 
+CF_SCRIPTS=   m5208evb.ld m5213evb.ld m5235evb.ld m5272c3.ld m5282evb.ld
+
 # Host specific makefile fragment comes in here.
 @host_makefile_frag@
 
@@ -130,7 +132,7 @@ DBUG_OBJS=	dbug-exit.o dbug-inbyte.o dbug-outbyte.o
 # build a test program for each target board. Just trying to get
 # it to link is a good test, so we ignore all the errors for now.
 #
-all: ${SIM_CRT0} ${SIM_BSP} ${CRT0} ${BCC_BSP} ${IDP_BSP} ${IDPGDB_BSP} ${MVME135_BSP} ${MVME162_BSP} ${DBUG_BSP}
+all: ${SIM_CRT0} ${SIM_BSP} ${CRT0} ${BCC_BSP} ${IDP_BSP} ${IDPGDB_BSP} ${MVME135_BSP} ${MVME162_BSP} ${DBUG_BSP} ${CF_SCRIPTS}
 
 #
 # here's where we build the board support packages for each target
@@ -163,6 +165,21 @@ ${MVME162_BSP}: $(OBJS) ${MVME162_OBJS}
 	${AR} ${ARFLAGS} $@ $(OBJS) ${MVME162_OBJS}
 	${RANLIB} $@
 
+m5208evb.ld: dbug-cf.sc Makefile
+	RAMSTART=1024M RAMSIZE=16M RAMDBUG=128K ${SHELL} $< > $@
+
+m5213evb.ld: dbug-cf.sc Makefile
+	RAMSTART=512M RAMSIZE=32K RAMDBUG=8K ${SHELL} $< > $@
+
+m5235evb.ld: dbug-cf.sc Makefile
+	RAMSTART=0M RAMSIZE=16M RAMDBUG=64K ${SHELL} $< > $@
+
+m5272c3.ld: dbug-cf.sc Makefile
+	RAMSTART=0M RAMSIZE=4M RAMDBUG=128K ${SHELL} $< > $@
+
+m5282evb.ld: dbug-cf.sc Makefile
+	RAMSTART=0M RAMSIZE=16M RAMDBUG=64K ${SHELL} $< > $@
+
 leds.o: ${srcdir}/leds.c
 	$(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $<
 
@@ -283,6 +300,9 @@ install:
 	$(INSTALL_PROGRAM) $(DBUG_BSP) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(DBUG_BSP)
 	$(INSTALL_DATA) ${srcdir}/sbc5204.ld $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/sbc5204.ld
 	$(INSTALL_DATA) ${srcdir}/sbc5206.ld $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/sbc5206.ld
+	for script in $(CF_SCRIPTS) ; \
+	do $(INSTALL_DATA) $$script $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$$script ; \
+	done
 
 # target specific makefile fragment comes in here.
 @target_makefile_frag@
diff --git a/libgloss/m68k/crt0.S b/libgloss/m68k/crt0.S
index 321b97f03..1aa0dd6bb 100644
--- a/libgloss/m68k/crt0.S
+++ b/libgloss/m68k/crt0.S
@@ -84,7 +84,7 @@ SYM (start):
 	subql	IMM(1), d0
 2:
 	clrb	(a0)+
-#if !defined(__mcoldfire__) && !defined(__mcf5200__)
+#if !defined(__mcoldfire__)
 	dbra	d0, 2b
 	clrw	d0
 	subql	IMM(1), d0
diff --git a/libgloss/m68k/dbug-cf.sc b/libgloss/m68k/dbug-cf.sc
new file mode 100644
index 000000000..0342ed1fd
--- /dev/null
+++ b/libgloss/m68k/dbug-cf.sc
@@ -0,0 +1,112 @@
+# a linker script template.
+# RAMSTART - start of board's ram
+# RAMSIZE - size of board's ram
+# RAMDBUG - bytes at start of RAM for DBUG use
+
+cat <<EOF
+STARTUP(crt0.o)
+OUTPUT_ARCH(m68k)
+/* DBUG loads SREC files */
+/*OUTPUT_FORMAT(srec)*/
+ENTRY(start)
+SEARCH_DIR(.)
+GROUP(-ldbug -lc -lgcc -ldbug)
+__DYNAMIC  =  0;
+
+MEMORY
+{
+  ram (rwx) : ORIGIN = ${RAMSTART} + ${RAMDBUG:-0},
+		 LENGTH = ${RAMSIZE} - ${RAMDBUG:-0}
+}
+
+PROVIDE (__stack = ${RAMSTART} + ${RAMSIZE});
+
+/*
+ * Initalize some symbols to be zero so we can reference them in the
+ * crt0 without core dumping. These functions are all optional, but
+ * we do this so we can have our crt0 always use them if they exist. 
+ * This is so BSPs work better when using the crt0 installed gcc.
+ * We have to initalize them twice, so we cover a.out (which prepends
+ * an underscore) and coff object file formats.
+ */
+PROVIDE (hardware_init_hook = 0);
+PROVIDE (_hardware_init_hook = 0);
+PROVIDE (software_init_hook = 0);
+PROVIDE (_software_init_hook = 0);
+/*
+ * stick everything in ram (of course)
+ */
+SECTIONS
+{
+  .text :
+  {
+    CREATE_OBJECT_SYMBOLS
+    *(.text .text.*)
+
+    . = ALIGN(0x4);
+    /* These are for running static constructors and destructors under ELF.  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+
+    *(.rodata .rodata.*)
+
+    . = ALIGN(0x4);
+    *(.gcc_except_table) 
+
+    . = ALIGN(0x4);
+    *(.eh_frame)
+
+    . = ALIGN(0x4);
+    __INIT_SECTION__ = . ;
+    LONG (0x4e560000)	/* linkw %fp,#0 */
+    *(.init)
+    SHORT (0x4e5e)	/* unlk %fp */
+    SHORT (0x4e75)	/* rts */
+
+    . = ALIGN(0x4);
+    __FINI_SECTION__ = . ;
+    LONG (0x4e560000)	/* linkw %fp,#0 */
+    *(.fini)
+    SHORT (0x4e5e)	/* unlk %fp */
+    SHORT (0x4e75)	/* rts */
+
+    _etext = .;
+    *(.lit)
+  } > ram
+
+  .data :
+  {
+    *(.got.plt) *(.got)
+    *(.shdata)
+    *(.data .data.*)
+    _edata = .;
+  } > ram
+
+  .bss :
+  {
+    . = ALIGN(0x4);
+    __bss_start = . ;
+    *(.shbss)
+    *(.bss .bss.*)
+    *(COMMON)
+    _end =  ALIGN (0x8);
+    __end = _end;
+  } > ram
+
+  .stab 0 (NOLOAD) :
+  {
+    *(.stab)
+  }
+
+  .stabstr 0 (NOLOAD) :
+  {
+    *(.stabstr)
+  }
+}
+EOF