Initial revision

From-SVN: r2927

2 files changed, 67 insertions, 0 deletions

diff --git a/gcc/config/m88k/dgux.ld b/gcc/config/m88k/dgux.ld
new file mode 100644
index 0000000..93016d9
--- /dev/null
+++ b/gcc/config/m88k/dgux.ld
@@ -0,0 +1,47 @@
+/* m88kdgux.ld - COFF linker directives for G++ on an AViiON
+
+   This file is part of GNU CC.
+   
+   GNU CC is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+   
+   GNU CC is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with GNU CC; see the file COPYING.  If not, write to
+   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+   
+   On The AViiON we start the output .text section somewhere after the
+   first 64kb (0x10000) of logical address space so that the first
+   64kb can be mapped out, thus catching references through null
+   pointers.  We actually start at 0x10200 (for efficiency).  Ideally,
+   we want the page offset of a given word of the .text (output)
+   section to be the same as it's page offset in the actual (output)
+   linked core file so that paging of the .text section is efficient.
+   In order to do this we allow for up to 0x200 bytes of header stuff
+   in the output (linked) object file.
+   
+   For .data, the OCS says that regions with different "protections"
+   (i.e. read/write, read-only) should not share any 4 megabyte chunk
+   of the logical address space, so we start the .data segment at the
+   first (lowest) 4 MB boundary past the end of the .text segment.
+   
+   For some reason, you can't start right at the 4 MB boundary.  You
+   have to start at some distance past that.  The distance must be
+   equal to the distance from the start of the last 64 KB segment in
+   the (output) .text segment to the actual end of the (output) .text
+   segment.  */
+
+SECTIONS {
+  .text 0x10200 BLOCK(0x200) :
+    { *(.init) *(.initp) *(.finip) *(.text) *(.tdesc) }
+
+  GROUP BIND (((((ADDR(.text) + SIZEOF(.text) - 1) / 0x400000) + 1) * 0x400000) + ((ADDR(.text) + SIZEOF (.text)) % 0x10000)) :
+    { .data : { *(.data) *(.ctors) *(.dtors) }
+      .bss  : {} }
+}
diff --git a/gcc/config/m88k/t-dgux b/gcc/config/m88k/t-dgux
new file mode 100644
index 0000000..0c9b2c5
--- /dev/null
+++ b/gcc/config/m88k/t-dgux
@@ -0,0 +1,20 @@
+# Specify how to create the *.asm files
+
+MOVE_ASM = moveHI15x.asm moveQI16x.asm moveSI46x.asm moveSI64n.asm \
+	   moveHI48x.asm moveSI45x.asm moveSI47x.asm moveSI96x.asm \
+	   moveDI96x.asm
+
+$(MOVE_ASM): $(srcdir)/config/m88k-move.sh
+	$(srcdir)/config/m88k-move.sh
+
+LIB2FUNCS_EXTRA = $(MOVE_ASM)
+LIBGCC1 = libgcc1.null
+
+# For DG/UX we build crtbegin.o and crtend.o which serve to add begin and
+# end labels to the .ctors and .dtors section when we link using gcc.
+# In a coff environment, a link script is required.
+
+EXTRA_PARTS=crtbegin.o crtend.o m88kdgux.ld
+
+m88kdgux.ld: $(srcdir)/config/m88kdgux.ld
+	rm -f m88kdgux.ld; cp $(srcdir)/config/m88kdgux.ld .