mipseb.r3000-linux.elf [broken because no big-endian tool chain]

src/conf.h

@@ -470,6 +470,7 @@ private:
 #define UPX_F_MACH_FAT          134
 #define UPX_F_VMLINUX_ARMEB     135
 #define UPX_F_VMLINUX_PPC32     136
+#define UPX_F_LINUX_ELF32_MIPSEB 137
 
 
 // compression methods

src/linker.cpp

@@ -765,6 +765,37 @@ void ElfLinkerM68k::relocate1(const Relocation *rel, upx_byte *location,
 }
 
 
+void ElfLinkerMipsBE::relocate1(const Relocation *rel, upx_byte *location,
+                                unsigned value, const char *type)
+{
+#define MIPS_HI(a)      (((a) >> 16) + (((a) & 0x8000) >> 15))
+#define MIPS_LO(a)      ((a) & 0xffff)
+#define MIPS_PC16(a)    ((a) >> 2)
+#define MIPS_PC26(a)    (((a) & 0x0fffffff) >> 2)
+
+    if (strcmp(type, "R_MIPS_HI16") == 0)
+        set_le16(location, get_le16(location) + MIPS_HI(value));
+    else if (strcmp(type, "R_MIPS_LO16") == 0)
+        set_le16(location, get_le16(location) + MIPS_LO(value));
+    else if (strcmp(type, "R_MIPS_PC16") == 0)
+    {
+        value -= rel->section->offset + rel->offset;
+        set_le16(location, get_le16(location) + MIPS_PC16(value));
+    }
+    else if (strcmp(type, "R_MIPS_26") == 0)
+        set_le32(location, get_le32(location) + MIPS_PC26(value));
+    else if (strcmp(type, "R_MIPS_32") == 0)
+        set_le32(location, get_le32(location) + value);
+    else
+        super::relocate1(rel, location, value, type);
+
+#undef MIPS_HI
+#undef MIPS_LO
+#undef MIPS_PC16
+#undef MIPS_PC26
+}
+
+
 void ElfLinkerMipsLE::relocate1(const Relocation *rel, upx_byte *location,
                                 unsigned value, const char *type)
 {

src/linker.h

@@ -195,6 +195,15 @@ protected:
 };
 
 
+class ElfLinkerMipsBE : public ElfLinker
+{
+    typedef ElfLinker super;
+protected:
+    virtual void relocate1(const Relocation *, upx_byte *location,
+                           unsigned value, const char *type);
+};
+
+
 class ElfLinkerMipsLE : public ElfLinker
 {
     typedef ElfLinker super;

src/stub/Makefile

@@ -88,6 +88,8 @@ STUBS += i386-linux.kernel.vmlinux-head.h
 STUBS += i386-linux.kernel.vmlinuz.h
 STUBS += i386-win32.pe.h
 STUBS += m68k-atari.tos.h
+STUBS += mipseb.r3000-linux.elf-entry.h
+STUBS += mipseb.r3000-linux.elf-fold.h
 STUBS += mipsel.r3000-ps1.h
 STUBS += mipsel.r3000-linux.elf-entry.h
 STUBS += mipsel.r3000-linux.elf-fold.h
@@ -806,6 +808,51 @@ m68k-atari.tos.h : $(srcdir)/src/$$T.S
 	$(call tc,bin2h-c) tmp/$T.bin $@
 
 
+# /***********************************************************************
+# // mipseb.r3000-linux.elf
+# ************************************************************************/
+
+# BUG: generate bad data [byte-swapped] using 'mipsel', but at least 'make' completes.
+mipseb.r3000-linux.elf%.h : tc_list = mipseb.r3000-linux.elf default
+mipseb.r3000-linux.elf%.h : tc_bfdname = elf32-littlemips
+
+tc.mipseb.r3000-linux.elf.as   = mipsel-elf-as-20060406 -O -mno-pdr
+tc.mipseb.r3000-linux.elf.gcc  = mipsel-linux-gcc-4.1.1 -meb -march=r3000 -mno-abicalls -mabi=eabi -G0 -nostdinc -MMD -MT $@
+tc.mipseb.r3000-linux.elf.gcc += -fno-exceptions -fno-asynchronous-unwind-tables
+tc.mipseb.r3000-linux.elf.gcc += -Wall -W -Wcast-align -Wcast-qual -Wstrict-prototypes -Wwrite-strings -Werror
+
+mipseb.r3000-linux.elf-entry.h : $(srcdir)/src/$$T.S
+ifeq (1,1)
+	# info: we really need as-2.17 here
+	$(call tc,pp-as) -D_TARGET_LINUX_ $< -o - | $(RTRIM) > tmp/$T.i
+	$(call tc,as) tmp/$T.i -o tmp/$T.bin
+	$(call tc,gpp_mkdep) --mode=c --MMD=$@ $< --MF=tmp/$T.d
+else
+	# info: as-2.16.1 as used by gcc-4.1.1 does _not_ work
+	$(call tc,gcc) -c -D_TARGET_LINUX_ -Wa,-O,-mno-pdr $< -o tmp/$T.bin
+endif
+	$(call tc,f-embed_objinfo,tmp/$T.bin)
+	$(call tc,bin2h-c) tmp/$T.bin $@
+
+mipseb.r3000-linux.elf-fold.h : tmp/$$T.o tmp/mipseb.r3000-linux.elf-main.o $(srcdir)/src/$$T.lds
+	$(call tc,ld) --strip-all -T $(srcdir)/src/$T.lds -Map tmp/$T.map $(filter %.o,$^) -o tmp/$T.bin
+	$(call tc,f-objstrip,tmp/$T.bin)
+	$(call tc,sstrip) tmp/$T.bin
+	$(call tc,bin2h) tmp/$T.bin $@
+
+tmp/mipseb.r3000-linux.elf-fold.o : $(srcdir)/src/$$T.S
+	$(call tc,gcc) -c -D_TARGET_LINUX_ $< -o $@
+	$(call tc,f-objstrip,$@)
+
+tmp/mipseb.r3000-linux.elf-main.o : $(srcdir)/src/$$T.c
+	$(call tc,gcc) -S -Os -MF tmp/$T.d $< -o - | $(RTRIM) > tmp/$T.i
+	sed -e 's/	j[ 	][ 	]*$$L/	b $$L/' \
+	    -e 's/	jal[ 	][ 	]*\([^\$$]\)/	bal \1/' < tmp/$T.i > tmp/$T.s
+	$(call tc,gcc) -c -Wa,-O,-mno-pdr tmp/$T.s -o $@
+	$(call tc,f-objstrip,$@)
+	$(call tc,objdump) -dr $(tc_objdump_disasm_options) $@ | $(RTRIM) > $@.disasm
+
+
 # /***********************************************************************
 # // mipsel.r3000-ps1
 # ************************************************************************/

src/stub/src/mipseb.r3000-linux.elf-entry.S

@@ -0,0 +1 @@
+#include "mipsel.r3000-linux.elf-entry.S"

src/stub/src/mipseb.r3000-linux.elf-fold.S

@@ -0,0 +1 @@
+#include "mipsel.r3000-linux.elf-fold.S"

src/stub/src/mipseb.r3000-linux.elf-fold.lds

@@ -0,0 +1,49 @@
+/* mipsel.r3000-linux.elf-fold.lds --
+
+   This file is part of the UPX executable compressor.
+
+   Copyright (C) 2000-2007 John F. Reiser
+   All Rights Reserved.
+
+   UPX and the UCL library are free software; you can redistribute them
+   and/or modify them under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program 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 this program; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Markus F.X.J. Oberhumer              Laszlo Molnar
+   <mfx@users.sourceforge.net>          <ml1050@users.sourceforge.net>
+
+   John F. Reiser
+   <jreiser@users.sourceforge.net>
+ */
+
+
+/* 2007-11-12: BUG: should be elf32-bigmips, but that does not work yet */
+OUTPUT_FORMAT("elf32-littlemips", "elf32-littlemips", "elf32-littlemips")
+OUTPUT_ARCH(mips)
+/*ENTRY(_start)*/
+PHDRS
+{
+    text PT_LOAD FILEHDR PHDRS ;
+    data PT_LOAD ;  /* for setting brk(0) */
+}
+SECTIONS
+{
+  . = 0x00100000 + SIZEOF_HEADERS + 12;  /* 12==sizeof(l_info) */
+  .text : {
+    *(.text)
+    *(.data)
+  } : text
+  .data : {
+  } : data
+}

src/stub/src/mipseb.r3000-linux.elf-main.c

@@ -0,0 +1 @@
+#include "i386-linux.elf-main.c"