filters for unix(linux)

Modified Files:
	filteri.cpp filter/ctojr.h linker.cpp linker.h mem.cpp mem.h
	p_lx_elf.cpp p_lx_elf.h
	p_lx_exc.cpp p_lx_exc.h
	p_lx_sh.cpp  p_lx_sh.h
	p_unix.cpp packer.cpp packer.h packhead.cpp
	stub/Makefile    stub/macros.ash
	stub/l_lx_elf.c  stub/l_lx_elf86.asm  stub/l_lx_elf86.lds
	stub/l_lx_exec.c stub/l_lx_exec86.asm stub/l_lx_exec86.lds
	                 stub/l_lx_sh86.asm   stub/l_lx_sh86.lds
Added Files:
	filter/ctok.h
	stub/fold_elf86.asm stub/fold_exec86.asm stub/fold_sh86.asm

committer: jreiser <jreiser> 979796725 +0000

src/mem.h

@@ -55,6 +55,7 @@ public:
 private:
     void alloc(unsigned size, unsigned base_offset);
 
+protected:
     unsigned char *ptr;
     unsigned char *alloc_ptr;
     unsigned alloc_size;
@@ -71,6 +72,14 @@ private:
     //static void operator delete[] (void *) {}
 };
 
+class MemBufferIO : public MemBuffer {
+public:
+    MemBufferIO(unsigned size=0);
+    ~MemBufferIO();
+
+    unsigned seek(unsigned offset, int whence);  // returns new position
+    unsigned write(void const *data, unsigned size);  // returns xfer count
+};
 
 #endif /* already included */