added files for ps2 loadable modules (mainly transplanted from psp code with VERY minor tweaks)

svn-id: r49256

6 files changed, 1567 insertions, 0 deletions

diff --git a/backends/platform/ps2/elf32.h b/backends/platform/ps2/elf32.h
new file mode 100644
index 0000000000..e024fcf5c4
--- /dev/null
+++ b/backends/platform/ps2/elf32.h
@@ -0,0 +1,209 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/branches/gsoc2010-plugins/backends/platform/ps2/elf32.h $
+ * $Id: elf32.h 49253 2010-05-12 05:26:54Z Toneman $
+ *
+ */
+
+#ifndef BACKENDS_ELF_H
+#define BACKENDS_ELF_H
+
+/* ELF stuff */
+
+typedef unsigned short Elf32_Half, Elf32_Section;
+typedef unsigned int Elf32_Word, Elf32_Addr, Elf32_Off;
+typedef signed int  Elf32_Sword;
+typedef Elf32_Half Elf32_Versym;
+
+#define EI_NIDENT (16)
+#define SELFMAG         6
+
+/* ELF File format structures. Look up ELF structure for more details */
+
+// ELF header (contains info about the file)
+typedef struct {
+	unsigned char e_ident[EI_NIDENT];     /* Magic number and other info */
+	Elf32_Half    e_type;                 /* Object file type */
+	Elf32_Half    e_machine;              /* Architecture */
+	Elf32_Word    e_version;              /* Object file version */
+	Elf32_Addr    e_entry;                /* Entry point virtual address */
+	Elf32_Off     e_phoff;                /* Program header table file offset */
+	Elf32_Off     e_shoff;                /* Section header table file offset */
+	Elf32_Word    e_flags;                /* Processor-specific flags */
+	Elf32_Half    e_ehsize;               /* ELF header size in bytes */
+	Elf32_Half    e_phentsize;            /* Program header table entry size */
+	Elf32_Half    e_phnum;                /* Program header table entry count */
+	Elf32_Half    e_shentsize;            /* Section header table entry size */
+	Elf32_Half    e_shnum;                /* Section header table entry count */
+	Elf32_Half    e_shstrndx;             /* Section header string table index */
+} Elf32_Ehdr;
+
+// Should be in e_ident
+#define ELFMAG          "\177ELF\1\1"	/* ELF Magic number */
+
+// e_type values
+#define ET_NONE		0	/* no file type */
+#define ET_REL		1	/* relocatable */
+#define ET_EXEC		2	/* executable */
+#define ET_DYN		3	/* shared object */
+#define ET_CORE		4	/* core file */
+
+// e_machine values
+#define EM_MIPS		8
+
+
+// Program header (contains info about segment)
+typedef struct {
+	Elf32_Word    p_type;                 /* Segment type */
+	Elf32_Off     p_offset;               /* Segment file offset */
+	Elf32_Addr    p_vaddr;                /* Segment virtual address */
+	Elf32_Addr    p_paddr;                /* Segment physical address */
+	Elf32_Word    p_filesz;               /* Segment size in file */
+	Elf32_Word    p_memsz;                /* Segment size in memory */
+	Elf32_Word    p_flags;                /* Segment flags */
+	Elf32_Word    p_align;                /* Segment alignment */
+} Elf32_Phdr;
+
+// p_type values
+#define PT_NULL 		0	/* ignored */
+#define PT_LOAD			1	/* loadable segment */
+#define PT_DYNAMIC		2	/* dynamic linking info */
+#define PT_INTERP		3	/* info about interpreter */
+#define PT_NOTE			4	/* note segment */
+#define PT_SHLIB		5	/* reserved */
+#define PT_PHDR			6	/* Program header table */
+#define PT_MIPS_REGINFO 0x70000000	/* register usage info */
+
+// p_flags value
+#define PF_X	1	/* execute */
+#define PF_W	2	/* write */
+#define PF_R	4	/* read */
+
+// Section header (contains info about section)
+typedef struct {
+	Elf32_Word    sh_name;                /* Section name (string tbl index) */
+	Elf32_Word    sh_type;                /* Section type */
+	Elf32_Word    sh_flags;               /* Section flags */
+	Elf32_Addr    sh_addr;                /* Section virtual addr at execution */
+	Elf32_Off     sh_offset;              /* Section file offset */
+	Elf32_Word    sh_size;                /* Section size in bytes */
+	Elf32_Word    sh_link;                /* Link to another section */
+	Elf32_Word    sh_info;                /* Additional section information */
+	Elf32_Word    sh_addralign;           /* Section alignment */
+	Elf32_Word    sh_entsize;             /* Entry size if section holds table */
+} Elf32_Shdr;
+
+// sh_type values
+#define SHT_NULL			0	/* Inactive section */
+#define SHT_PROGBITS		1	/* Proprietary */
+#define SHT_SYMTAB			2	/* Symbol table */
+#define SHT_STRTAB			3	/* String table */
+#define SHT_RELA			4	/* Relocation entries with addend */
+#define SHT_HASH			5	/* Symbol hash table */
+#define SHT_DYNAMIC			6	/* Info for dynamic linking */
+#define SHT_NOTE			7	/* Note section */
+#define SHT_NOBITS			8	/* Occupies no space */
+#define SHT_REL				9	/* Relocation entries without addend */
+#define SHT_SHLIB			10	/* Reserved */
+#define SHT_DYNSYM			11	/* Minimal set of dynamic linking symbols */
+#define SHT_MIPS_LIBLSIT	0x70000000	/* Info about dynamic shared object libs */
+#define SHT_MIPS_CONFLICT	0x70000002	/* Conflicts btw executables and shared objects */
+#define SHT_MIPS_GPTAB		0x70000003	/* Global pointer table */
+
+// sh_flags values
+#define SHF_WRITE		0	/* writable section */
+#define SHF_ALLOC		2	/* section occupies memory */
+#define SHF_EXECINSTR	4	/* machine instructions */
+#define SHF_MIPS_GPREL	0x10000000	/* Must be made part of global data area */
+
+
+// Symbol entry (contain info about a symbol)
+typedef struct {
+	Elf32_Word    st_name;                /* Symbol name (string tbl index) */
+	Elf32_Addr    st_value;               /* Symbol value */
+	Elf32_Word    st_size;                /* Symbol size */
+	unsigned char st_info;                /* Symbol type and binding */
+	unsigned char st_other;               /* Symbol visibility */
+	Elf32_Section st_shndx;               /* Section index */
+} Elf32_Sym;
+
+// Extract from the st_info
+#define SYM_TYPE(x)		((x)&0xF)
+#define SYM_BIND(x)		((x)>>4)
+
+
+// Symbol binding values from st_info
+#define STB_LOCAL 	0	/* Symbol not visible outside object */
+#define STB_GLOBAL 	1	/* Symbol visible to all object files */
+#define STB_WEAK	2	/* Similar to STB_GLOBAL */
+
+// Symbol type values from st_info
+#define STT_NOTYPE	0	/* Not specified */
+#define STT_OBJECT	1	/* Data object e.g. variable */
+#define STT_FUNC	2	/* Function */
+#define STT_SECTION	3	/* Section */
+#define STT_FILE	4	/* Source file associated with object file */
+
+// Special section header index values from st_shndex
+#define SHN_UNDEF  		0
+#define SHN_LOPROC 		0xFF00	/* Extended values */
+#define SHN_ABS	   		0xFFF1	/* Absolute value: don't relocate */
+#define SHN_COMMON 		0xFFF2	/* Common block. Not allocated yet */
+#define SHN_HIPROC 		0xFF1F
+#define SHN_HIRESERVE 	0xFFFF
+
+// Relocation entry (info about how to relocate)
+typedef struct {
+	Elf32_Addr    r_offset;               /* Address */
+	Elf32_Word    r_info;                 /* Relocation type and symbol index */
+} Elf32_Rel;
+
+// Access macros for the relocation info
+#define REL_TYPE(x)		((x)&0xFF)			/* Extract relocation type */
+#define REL_INDEX(x)	((x)>>8)			/* Extract relocation index into symbol table */
+
+// MIPS relocation types
+#define R_MIPS_NONE		0
+#define R_MIPS_16		1
+#define R_MIPS_32		2
+#define R_MIPS_REL32	3
+#define R_MIPS_26		4
+#define R_MIPS_HI16		5
+#define R_MIPS_LO16		6
+#define R_MIPS_GPREL16	7
+#define R_MIPS_LITERAL	8
+#define R_MIPS_GOT16	9
+#define R_MIPS_PC16		10
+#define R_MIPS_CALL16	11
+#define R_MIPS_GPREL32	12
+#define R_MIPS_GOTHI16	13
+#define R_MIPS_GOTLO16	14
+#define R_MIPS_CALLHI16	15
+#define R_MIPS_CALLLO16	16
+
+// Mock function to get value of global pointer
+#define getGP()	({	\
+	unsigned int __valgp;	\
+	__asm__ ("add %0, $gp, $0" : "=r"(__valgp) : ); \
+	__valgp; \
+})
+
+#endif /* BACKENDS_ELF_H */
diff --git a/backends/platform/ps2/main_prog.ld b/backends/platform/ps2/main_prog.ld
new file mode 100644
index 0000000000..68ade38d1a
--- /dev/null
+++ b/backends/platform/ps2/main_prog.ld
@@ -0,0 +1,253 @@
+OUTPUT_FORMAT("elf32-littlemips", "elf32-bigmips",
+	      "elf32-littlemips")
+OUTPUT_ARCH(mips:allegrex)
+ENTRY(_start)
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  PROVIDE (__executable_start = 0x08900000); . = 0x08900000;
+  .interp         : { *(.interp) }
+  .reginfo        : { *(.reginfo) }
+  .dynamic        : { *(.dynamic) }
+  .hash           : { *(.hash) }
+  .dynsym         : { *(.dynsym) }
+  .dynstr         : { *(.dynstr) }
+  .gnu.version    : { *(.gnu.version) }
+  .gnu.version_d  : { *(.gnu.version_d) }
+  .gnu.version_r  : { *(.gnu.version_r) }
+  .rel.init       : { *(.rel.init) }
+  .rela.init      : { *(.rela.init) }
+  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
+  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
+  .rel.fini       : { *(.rel.fini) }
+  .rela.fini      : { *(.rela.fini) }
+  /* PSP-specific relocations. TODO: works for PS2 as well? */
+  .rel.sceStub.text   : { *(.rel.sceStub.text) *(SORT(.rel.sceStub.text.*)) }
+  .rel.lib.ent.top    : { *(.rel.lib.ent.top) }
+  .rel.lib.ent        : { *(.rel.lib.ent) }
+  .rel.lib.ent.btm    : { *(.rel.lib.ent.btm) }
+  .rel.lib.stub.top   : { *(.rel.lib.stub.top) }
+  .rel.lib.stub       : { *(.rel.lib.stub) }
+  .rel.lib.stub.btm   : { *(.rel.lib.stub.btm) }
+  .rel.rodata.sceModuleInfo   : { *(.rel.rodata.sceModuleInfo) }
+  .rel.rodata.sceResident     : { *(.rel.rodata.sceResident) }
+  .rel.rodata.sceNid          : { *(.rel.rodata.sceNid) }
+  .rel.rodata.sceVstub        : { *(.rel.rodata.sceVstub) *(SORT(.rel.rodata.sceVstub.*)) }
+  .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
+  .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
+  .rel.data.rel.ro   : { *(.rel.data.rel.ro*) }
+  .rela.data.rel.ro   : { *(.rel.data.rel.ro*) }
+  .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
+  .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
+  .rel.tdata	  : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
+  .rela.tdata	  : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
+  .rel.tbss	  : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
+  .rela.tbss	  : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
+  .rel.ctors      : { *(.rel.ctors) }
+  .rela.ctors     : { *(.rela.ctors) }
+  .rel.dtors      : { *(.rel.dtors) }
+  .rela.dtors     : { *(.rela.dtors) }
+  .rel.got        : { *(.rel.got) }
+  .rela.got       : { *(.rela.got) }
+  .rel.sdata      : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }
+  .rela.sdata     : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }
+  .rel.sbss       : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }
+  .rela.sbss      : { *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) }
+  .rel.sdata2     : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }
+  .rela.sdata2    : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }
+  .rel.sbss2      : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }
+  .rela.sbss2     : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }
+  .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
+  .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
+  .rel.plt        : { *(.rel.plt) }
+  .rela.plt       : { *(.rela.plt) }
+  .init           :
+  {
+    KEEP (*(.init))
+  } =0
+  .plt            : { *(.plt) }
+  .text           :
+  {
+    _ftext = . ;
+    *(.text .stub .text.* .gnu.linkonce.t.*)
+    KEEP (*(.text.*personality*))
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.mips16.fn.*) *(.mips16.call.*)
+  } =0
+  .fini           :
+  {
+    KEEP (*(.fini))
+  } =0
+  /* PSP library stub functions. TODO: works for PS2 as well? */
+  .sceStub.text     : { *(.sceStub.text) *(SORT(.sceStub.text.*)) }
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+  /* PSP library entry table and library stub table. TODO: works for PS2 as well? */
+  .lib.ent.top    : { *(.lib.ent.top) }
+  .lib.ent        : { *(.lib.ent) }
+  .lib.ent.btm    : { *(.lib.ent.btm) }
+  .lib.stub.top   : { *(.lib.stub.top) }
+  .lib.stub       : { *(.lib.stub) }
+  .lib.stub.btm   : { *(.lib.stub.btm) }
+  /* PSP read-only data for module info, NIDs, and Vstubs.  The
+     .rodata.sceModuleInfo section must appear before the .rodata section
+     otherwise it would get absorbed into .rodata and the PSP bootloader
+     would be unable to locate the module info structure. TODO: Works for PS2 as well? */
+  .rodata.sceModuleInfo    : { *(.rodata.sceModuleInfo) }
+  .rodata.sceResident      : { *(.rodata.sceResident) }
+  .rodata.sceNid           : { *(.rodata.sceNid) }
+  .rodata.sceVstub         : { *(.rodata.sceVstub) *(SORT(.rodata.sceVstub.*)) }
+  .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
+  .rodata1        : { *(.rodata1) }
+  .sdata2         : { *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) }
+  .sbss2          : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) }
+  .eh_frame_hdr : { *(.eh_frame_hdr) }
+  .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
+  .gcc_except_table   : ONLY_IF_RO { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
+  /* Adjust the address for the data segment.  We want to adjust up to
+     the same address within the page on the next page up.  */
+  . = ALIGN(256) + (. & (256 - 1));
+  /* Exception handling  */
+  .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
+  .gcc_except_table   : ONLY_IF_RW { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
+  /* Thread Local Storage sections  */
+  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
+  /* Ensure the __preinit_array_start label is properly aligned.  We
+     could instead move the label definition inside the section, but
+     the linker would then create the section even if it turns out to
+     be empty, which isn't pretty.  */
+  . = ALIGN(32 / 8);
+  PROVIDE (__preinit_array_start = .);
+  .preinit_array     : { KEEP (*(.preinit_array)) }
+  PROVIDE (__preinit_array_end = .);
+  PROVIDE (__init_array_start = .);
+  .init_array     : { KEEP (*(.init_array)) }
+  PROVIDE (__init_array_end = .);
+  PROVIDE (__fini_array_start = .);
+  .fini_array     : { KEEP (*(.fini_array)) }
+  PROVIDE (__fini_array_end = .);
+  .ctors          :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin*.o(.ctors))
+    /* We don't want to include the .ctor section from
+       from the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
+  .dtors          :
+  {
+    KEEP (*crtbegin*.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
+  .jcr            : { KEEP (*(.jcr)) }
+  .data.rel.ro : { *(.data.rel.ro.local) *(.data.rel.ro*) }
+  .data           :
+  {
+    _fdata = . ;
+    *(.data .data.* .gnu.linkonce.d.*)
+    KEEP (*(.gnu.linkonce.d.*personality*))
+    SORT(CONSTRUCTORS)
+  }
+  .data1          : { *(.data1) }
+  . = .;
+  _gp = ALIGN(16) + 0x7ff0;
+  .got            : { *(.got.plt) *(.got) }
+  /* We want the small data sections together, so single-instruction offsets
+     can access them all, and initialized data all before uninitialized, so
+     we can shorten the on-disk segment size.  */
+  .sdata          :
+  {
+    *(.sdata .sdata.* .gnu.linkonce.s.*)
+  }
+  .lit8           : { *(.lit8) }
+  .lit4           : { *(.lit4) }
+  _edata = .;
+  PROVIDE (edata = .);
+  __bss_start = .;
+  _fbss = .;
+  .sbss           :
+  {
+    PROVIDE (__sbss_start = .);
+    PROVIDE (___sbss_start = .);
+    *(.dynsbss)
+    *(.sbss .sbss.* .gnu.linkonce.sb.*)
+    *(.scommon)
+    PROVIDE (__sbss_end = .);
+    PROVIDE (___sbss_end = .);
+  }
+  /* make a gap to put the plugins' short data here */
+  __plugin_hole_start = .;
+  . = _gp + 0x7ff0;
+  __plugin_hole_end = .;
+  COMMON          :
+  {
+   *(COMMON)
+  }
+  . = ALIGN(32 / 8);
+  .bss            :
+  {
+   *(.dynbss)
+   *(.bss .bss.* .gnu.linkonce.b.*)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.  */
+   . = ALIGN(32 / 8);
+  }
+  . = ALIGN(32 / 8);
+  _end = .;
+  PROVIDE (end = .);
+  /* Stabs debugging sections.  */
+  .stab          0 : { *(.stab) }
+  .stabstr       0 : { *(.stabstr) }
+  .stab.excl     0 : { *(.stab.excl) }
+  .stab.exclstr  0 : { *(.stab.exclstr) }
+  .stab.index    0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .comment       0 : { *(.comment) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+  /DISCARD/ : { *(.comment) *(.pdr) }
+  /DISCARD/ : { *(.note.GNU-stack) }
+}
diff --git a/backends/platform/ps2/plugin.ld b/backends/platform/ps2/plugin.ld
new file mode 100644
index 0000000000..b27432a2af
--- /dev/null
+++ b/backends/platform/ps2/plugin.ld
@@ -0,0 +1,239 @@
+OUTPUT_FORMAT("elf32-littlemips", "elf32-bigmips",
+	      "elf32-littlemips")
+OUTPUT_ARCH(mips:allegrex)
+PHDRS
+{
+   plugin PT_LOAD ;
+   shorts PT_LOAD ;
+}
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  . = 0;
+  .interp         : { *(.interp) } : plugin
+  .reginfo        : { *(.reginfo) } : plugin
+  .dynamic        : { *(.dynamic) }
+  .hash           : { *(.hash) }
+  .dynsym         : { *(.dynsym) }
+  .dynstr         : { *(.dynstr) }
+  .gnu.version    : { *(.gnu.version) }
+  .gnu.version_d  : { *(.gnu.version_d) }
+  .gnu.version_r  : { *(.gnu.version_r) }
+  .rel.init       : { *(.rel.init) }
+  .rela.init      : { *(.rela.init) }
+  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
+  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
+  .rel.fini       : { *(.rel.fini) }
+  .rela.fini      : { *(.rela.fini) }
+  /* PSP-specific relocations. TODO: Do these work for PS2 as well? */
+  .rel.sceStub.text   : { *(.rel.sceStub.text) *(SORT(.rel.sceStub.text.*)) }
+  .rel.lib.ent.top    : { *(.rel.lib.ent.top) }
+  .rel.lib.ent        : { *(.rel.lib.ent) }
+  .rel.lib.ent.btm    : { *(.rel.lib.ent.btm) }
+  .rel.lib.stub.top   : { *(.rel.lib.stub.top) }
+  .rel.lib.stub       : { *(.rel.lib.stub) }
+  .rel.lib.stub.btm   : { *(.rel.lib.stub.btm) }
+  .rel.rodata.sceModuleInfo   : { *(.rel.rodata.sceModuleInfo) }
+  .rel.rodata.sceResident     : { *(.rel.rodata.sceResident) }
+  .rel.rodata.sceNid          : { *(.rel.rodata.sceNid) }
+  .rel.rodata.sceVstub        : { *(.rel.rodata.sceVstub) *(SORT(.rel.rodata.sceVstub.*)) }
+  .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
+  .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
+  .rel.data.rel.ro   : { *(.rel.data.rel.ro*) }
+  .rela.data.rel.ro   : { *(.rel.data.rel.ro*) }
+  .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
+  .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
+  .rel.tdata	  : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
+  .rela.tdata	  : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
+  .rel.tbss	  : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
+  .rela.tbss	  : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
+  .rel.ctors      : { *(.rel.ctors) }
+  .rela.ctors     : { *(.rela.ctors) }
+  .rel.dtors      : { *(.rel.dtors) }
+  .rela.dtors     : { *(.rela.dtors) }
+  .rel.got        : { *(.rel.got) }
+  .rela.got       : { *(.rela.got) }
+  .rel.sdata      : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }
+  .rela.sdata     : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }
+  .rel.sbss       : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }
+  .rela.sbss      : { *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) }
+  .rel.sdata2     : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }
+  .rela.sdata2    : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }
+  .rel.sbss2      : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }
+  .rela.sbss2     : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }
+  .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
+  .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
+  .rel.plt        : { *(.rel.plt) }
+  .rela.plt       : { *(.rela.plt) }
+  .init           :
+  {
+    KEEP (*(.init))
+  } =0
+  .plt            : { *(.plt) }
+  .text           :
+  {
+    _ftext = . ;
+    *(.text .stub .text.* .gnu.linkonce.t.*)
+    KEEP (*(.text.*personality*))
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.mips16.fn.*) *(.mips16.call.*)
+  } =0
+  .fini           :
+  {
+    KEEP (*(.fini))
+  } =0
+  /* PSP library stub functions. TODO: Work for PS2 as well? */
+  .sceStub.text     : { *(.sceStub.text) *(SORT(.sceStub.text.*)) }
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+  /* PSP library entry table and library stub table. TODO: Works for PS2 as well? */
+  .lib.ent.top    : { *(.lib.ent.top) }
+  .lib.ent        : { *(.lib.ent) }
+  .lib.ent.btm    : { *(.lib.ent.btm) }
+  .lib.stub.top   : { *(.lib.stub.top) }
+  .lib.stub       : { *(.lib.stub) }
+  .lib.stub.btm   : { *(.lib.stub.btm) }
+  /* PSP read-only data for module info, NIDs, and Vstubs.  The
+     .rodata.sceModuleInfo section must appear before the .rodata section
+     otherwise it would get absorbed into .rodata and the PSP bootloader
+     would be unable to locate the module info structure. TODO: Works for the ps2 as well? */
+  .rodata.sceModuleInfo    : { *(.rodata.sceModuleInfo) }
+  .rodata.sceResident      : { *(.rodata.sceResident) }
+  .rodata.sceNid           : { *(.rodata.sceNid) }
+  .rodata.sceVstub         : { *(.rodata.sceVstub) *(SORT(.rodata.sceVstub.*)) }
+  .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
+  .rodata1        : { *(.rodata1) }
+  .sdata2         : { *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) }
+  .sbss2          : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) }
+  .eh_frame_hdr : { *(.eh_frame_hdr) }
+  .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
+  .gcc_except_table   : ONLY_IF_RO { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
+  /* Adjust the address for the data segment.  We want to adjust up to
+     the same address within the page on the next page up.  */
+  . = ALIGN(256) + (. & (256 - 1));
+  /* Exception handling  */
+  .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
+  .gcc_except_table   : ONLY_IF_RW { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
+  /* Thread Local Storage sections  */
+  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
+  /* Ensure the __preinit_array_start label is properly aligned.  We
+     could instead move the label definition inside the section, but
+     the linker would then create the section even if it turns out to
+     be empty, which isn't pretty.  */
+  . = ALIGN(32 / 8);
+  PROVIDE (__preinit_array_start = .);
+  .preinit_array     : { KEEP (*(.preinit_array)) }
+  PROVIDE (__preinit_array_end = .);
+  PROVIDE (__init_array_start = .);
+  .init_array     : { KEEP (*(.init_array)) }
+  PROVIDE (__init_array_end = .);
+  PROVIDE (__fini_array_start = .);
+  .fini_array     : { KEEP (*(.fini_array)) }
+  PROVIDE (__fini_array_end = .);
+  .ctors          :
+  {
+    ___plugin_ctors = .;
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    ___plugin_ctors_end = .;
+  }
+  .dtors          :
+  {
+    ___plugin_dtors = .;
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+    ___plugin_dtors_end = .;
+  }
+  .jcr            : { KEEP (*(.jcr)) }
+  .data.rel.ro : { *(.data.rel.ro.local) *(.data.rel.ro*) }
+  .data           :
+  {
+    _fdata = . ;
+    *(.data .data.* .gnu.linkonce.d.*)
+    KEEP (*(.gnu.linkonce.d.*personality*))
+    SORT(CONSTRUCTORS)
+  }
+  .data1          : { *(.data1) }
+  . = .;
+  .bss            :
+  {
+   *(.dynbss)
+   *(.bss .bss.* .gnu.linkonce.b.*)
+   *(COMMON)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.  */
+   . = ALIGN(32 / 8);
+  }
+  . = ALIGN(32 / 8);
+  _end = .;
+  PROVIDE (end = .);
+  /* Stabs debugging sections.  */
+  .stab          0 : { *(.stab) }
+  .stabstr       0 : { *(.stabstr) }
+  .stab.excl     0 : { *(.stab.excl) }
+  .stab.exclstr  0 : { *(.stab.exclstr) }
+  .stab.index    0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .comment       0 : { *(.comment) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+  /DISCARD/ : { *(.comment) *(.pdr) }
+  /DISCARD/ : { *(.note.GNU-stack) }
+  
+  . = __plugin_hole_start;
+  .got            : { *(.got.plt) *(.got) } : shorts
+  /* We want the small data sections together, so single-instruction offsets
+     can access them all, and initialized data all before uninitialized, so
+     we can shorten the on-disk segment size.  */
+  .sdata          :
+  {
+    *(.sdata .sdata.* .gnu.linkonce.s.*)
+  }
+  .lit8           : { *(.lit8) }
+  .lit4           : { *(.lit4) }
+  _edata = .;
+  PROVIDE (edata = .);
+  __bss_start = .;
+  _fbss = .;
+  .sbss           :
+  {
+    PROVIDE (__sbss_start = .);
+    PROVIDE (___sbss_start = .);
+    *(.dynsbss)
+    *(.sbss .sbss.* .gnu.linkonce.sb.*)
+    *(.scommon)
+    PROVIDE (__sbss_end = .);
+    PROVIDE (___sbss_end = .);
+  }
+
+  
+}
diff --git a/backends/platform/ps2/plugin.syms b/backends/platform/ps2/plugin.syms
new file mode 100644
index 0000000000..24ee1a19dc
--- /dev/null
+++ b/backends/platform/ps2/plugin.syms
@@ -0,0 +1,8 @@
+PLUGIN_getVersion
+PLUGIN_getType
+PLUGIN_getTypeVersion
+PLUGIN_getObject
+___plugin_ctors
+___plugin_ctors_end
+___plugin_dtors
+___plugin_dtors_end
diff --git a/backends/platform/ps2/ps2loader.cpp b/backends/platform/ps2/ps2loader.cpp
new file mode 100644
index 0000000000..ff6702de17
--- /dev/null
+++ b/backends/platform/ps2/ps2loader.cpp
@@ -0,0 +1,721 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/branches/gsoc2010-plugins/backends/platform/ps2/ps2loader.cpp $
+ * TODO: $ID
+ *
+ */
+
+#if defined(DYNAMIC_MODULES) && defined(__PS2__)
+
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <sys/_default_fcntl.h>
+
+#include <ps2utils.h>
+
+#include "backends/platform/ps2/ps2loader.h"
+//#include "backends/platform/ps2/powerman.h" //TODO
+
+//#define __PS2_DEBUG_PLUGINS__
+
+#ifdef __PS2_DEBUG_PLUGINS__
+#define DBG(x,...) fprintf(stderr,x, ## __VA_ARGS__)
+#else
+#define DBG(x,...)
+#endif
+
+#define seterror(x,...) fprintf(stderr,x, ## __VA_ARGS__)
+
+extern char __plugin_hole_start;	// Indicates start of hole in program file for shorts
+extern char __plugin_hole_end;		// Indicates end of hole in program file
+extern char _gp[];			// Value of gp register
+
+DECLARE_SINGLETON(ShortSegmentManager)	// For singleton
+
+// Get rid of symbol table in memory
+void DLObject::discard_symtab() {
+	free(_symtab);
+	free(_strtab);
+	_symtab = NULL;
+	_strtab = NULL;
+	_symbol_cnt = 0;
+}
+
+// Unload all objects from memory
+void DLObject::unload() {
+	discard_symtab();
+	free(_segment);
+	_segment = NULL;
+
+	if (_shortsSegment) {
+		ShortsMan.deleteSegment(_shortsSegment);
+		_shortsSegment = NULL;
+	}
+}
+
+/**
+ * Follow the instruction of a relocation section.
+ *
+ * @param fd 		 File Descriptor
+ * @param offset 	 Offset into the File
+ * @param size   	 Size of relocation section
+ * @param relSegment Base address of relocated segment in memory (memory offset)
+ *
+ */
+bool DLObject::relocate(int fd, unsigned long offset, unsigned long size, void *relSegment) {
+	Elf32_Rel *rel = NULL;	// relocation entry
+
+	// Allocate memory for relocation table
+	if (!(rel = (Elf32_Rel *)malloc(size))) {
+		seterror("Out of memory.");
+		return false;
+	}
+
+	// Read in our relocation table
+	if (lseek(fd, offset, SEEK_SET) < 0 ||
+	        read(fd, rel, size) != (ssize_t)size) {
+		seterror("Relocation table load failed.");
+		free(rel);
+		return false;
+	}
+
+	// Treat each relocation entry. Loop over all of them
+	int cnt = size / sizeof(*rel);
+
+	DBG("Loaded relocation table. %d entries. base address=%p\n", cnt, relSegment);
+
+	bool seenHi16 = false;	// For treating HI/LO16 commands
+	int firstHi16 = -1;		// Mark the point of the first hi16 seen
+	Elf32_Addr ahl = 0;		// Calculated addend
+	int a = 0;				// Addend: taken from the target
+
+	unsigned int *lastTarget = 0;	// For processing hi16 when lo16 arrives
+	unsigned int relocation = 0;
+	int debugRelocs[10] = {0};		// For debugging
+	int extendedHi16 = 0;			// Count extended hi16 treatments
+	Elf32_Addr lastHiSymVal = 0;
+	bool hi16InShorts = false;
+
+#define DEBUG_NUM 2
+
+	// Loop over relocation entries
+	for (int i = 0; i < cnt; i++) {
+		// Get the symbol this relocation entry is referring to
+		Elf32_Sym *sym = (Elf32_Sym *)(_symtab) + (REL_INDEX(rel[i].r_info));
+
+		// Get the target instruction in the code
+		unsigned int *target = (unsigned int *)((char *)relSegment + rel[i].r_offset);
+
+		unsigned int origTarget = *target;	// Save for debugging
+
+		// Act differently based on the type of relocation
+		switch (REL_TYPE(rel[i].r_info)) {
+
+		case R_MIPS_HI16:						// Absolute addressing.
+			if (sym->st_shndx < SHN_LOPROC &&		// Only shift for plugin section (ie. has a real section index)
+			        firstHi16 < 0) {				// Only process first in block of HI16s
+				firstHi16 = i;						// Keep the first Hi16 we saw
+				seenHi16 = true;
+				ahl = (*target & 0xffff) << 16;		// Take lower 16 bits shifted up
+
+				lastHiSymVal = sym->st_value;
+				hi16InShorts = (ShortsMan.inGeneralSegment((char *)sym->st_value)); // Fix for problem with switching btw segments
+				if (debugRelocs[0]++ < DEBUG_NUM)	// Print only a set number
+					DBG("R_MIPS_HI16: i=%d, offset=%x, ahl = %x, target = %x\n",
+					    i, rel[i].r_offset, ahl, *target);
+			}
+			break;
+
+		case R_MIPS_LO16:						// Absolute addressing. Needs a HI16 to come before it
+			if (sym->st_shndx < SHN_LOPROC) {		// Only shift for plugin section. (ie. has a real section index)
+				if (!seenHi16) {					// We MUST have seen HI16 first
+					seterror("R_MIPS_LO16 w/o preceding R_MIPS_HI16 at relocation %d!\n", i);
+					free(rel);
+					return false;
+				}
+
+				// Fix: bug in gcc makes LO16s connect to wrong HI16s sometimes (shorts and regular segment)
+				// Note that we can check the entire shorts segment because the executable's shorts don't belong to this plugin section
+				//	and will be screened out above
+				bool lo16InShorts = ShortsMan.inGeneralSegment((char *)sym->st_value);
+
+				// Correct the bug by getting the proper value in ahl (taken from the current symbol)
+				if ((hi16InShorts && !lo16InShorts) || (!hi16InShorts && lo16InShorts)) {
+					ahl -= (lastHiSymVal & 0xffff0000);		// We assume gcc meant the same offset
+					ahl += (sym->st_value & 0xffff0000);
+				}
+
+				ahl &= 0xffff0000;				// Clean lower 16 bits for repeated LO16s
+				a = *target & 0xffff;			// Take lower 16 bits of the target
+				a = (a << 16) >> 16;			// Sign extend them
+				ahl += a;						// Add lower 16 bits. AHL is now complete
+
+				// Fix: we can have LO16 access to the short segment sometimes
+				if (lo16InShorts) {
+					relocation = ahl + _shortsSegment->getOffset();		// Add in the short segment offset
+				} else	// It's in the regular segment
+					relocation = ahl + (Elf32_Addr)_segment;			// Add in the new offset for the segment
+
+				if (firstHi16 >= 0) {					// We haven't treated the HI16s yet so do it now
+					for (int j = firstHi16; j < i; j++) {
+						if (REL_TYPE(rel[j].r_info) != R_MIPS_HI16) continue;	// Skip over non-Hi16s
+
+						lastTarget = (unsigned int *)((char *)relSegment + rel[j].r_offset);	// get hi16 target
+						*lastTarget &= 0xffff0000;		// Clear the lower 16 bits of the last target
+						*lastTarget |= (relocation >> 16) & 0xffff;	// Take the upper 16 bits of the relocation
+						if (relocation & 0x8000)(*lastTarget)++;	// Subtle: we need to add 1 to the HI16 in this case
+					}
+					firstHi16 = -1;						// Reset so we'll know we treated it
+				} else {
+					extendedHi16++;
+				}
+
+				*target &= 0xffff0000;						// Clear the lower 16 bits of current target
+				*target |= relocation & 0xffff;				// Take the lower 16 bits of the relocation
+
+				if (debugRelocs[1]++ < DEBUG_NUM)
+					DBG("R_MIPS_LO16: i=%d, offset=%x, a=%x, ahl = %x, lastTarget = %x, origt = %x, target = %x\n",
+					    i, rel[i].r_offset, a, ahl, *lastTarget, origTarget, *target);
+				if (lo16InShorts && debugRelocs[2]++ < DEBUG_NUM)
+					DBG("R_MIPS_LO16s: i=%d, offset=%x, a=%x, ahl = %x, lastTarget = %x, origt = %x, target = %x\n",
+					    i, rel[i].r_offset, a, ahl, *lastTarget, origTarget, *target);
+			}
+			break;
+
+		case R_MIPS_26:									// Absolute addressing (for jumps and branches only)
+			if (sym->st_shndx < SHN_LOPROC) {			// Only relocate for main segment
+				a = *target & 0x03ffffff;				// Get 26 bits' worth of the addend
+				a = (a << 6) >> 6; 							// Sign extend a
+				relocation = ((a << 2) + (Elf32_Addr)_segment) >> 2;	// a already points to the target. Subtract our offset
+				*target &= 0xfc000000;					// Clean lower 26 target bits
+				*target |= (relocation & 0x03ffffff);
+
+				if (debugRelocs[3]++ < DEBUG_NUM)
+					DBG("R_MIPS_26: i=%d, offset=%x, symbol=%d, stinfo=%x, a=%x, origTarget=%x, target=%x\n",
+					    i, rel[i].r_offset, REL_INDEX(rel[i].r_info), sym->st_info, a, origTarget, *target);
+			} else {
+				if (debugRelocs[4]++ < DEBUG_NUM)
+					DBG("R_MIPS_26: i=%d, offset=%x, symbol=%d, stinfo=%x, a=%x, origTarget=%x, target=%x\n",
+					    i, rel[i].r_offset, REL_INDEX(rel[i].r_info), sym->st_info, a, origTarget, *target);
+			}
+			break;
+
+		case R_MIPS_GPREL16:							// GP Relative addressing
+			if (_shortsSegment->getOffset() != 0 && 	// Only relocate if we shift the shorts section
+			        ShortsMan.inGeneralSegment((char *)sym->st_value)) {	// Only relocate things in the plugin hole
+				a = *target & 0xffff;				    // Get 16 bits' worth of the addend
+				a = (a << 16) >> 16;						// Sign extend it
+
+				relocation = a + _shortsSegment->getOffset();
+
+				*target &= 0xffff0000;					// Clear the lower 16 bits of the target
+				*target |= relocation & 0xffff;
+
+				if (debugRelocs[5]++ < DEBUG_NUM)
+					DBG("R_MIPS_GPREL16: i=%d, a=%x, gpVal=%x, origTarget=%x, target=%x, offset=%x\n",
+					    i, a, _gpVal, origTarget, *target, _shortsSegment->getOffset());
+			}
+
+			break;
+
+		case R_MIPS_32:									// Absolute addressing
+			if (sym->st_shndx < SHN_LOPROC) {			// Only shift for plugin section.
+				a = *target;							// Get full 32 bits of addend
+
+				if (ShortsMan.inGeneralSegment((char *)sym->st_value)) // Check if we're in the shorts segment
+					relocation = a + _shortsSegment->getOffset();	   // Shift by shorts offset
+				else												   // We're in the main section
+					relocation = a + (Elf32_Addr)_segment;			   // Shift by main offset
+				*target = relocation;
+
+				if (debugRelocs[6]++ < DEBUG_NUM)
+					DBG("R_MIPS_32: i=%d, a=%x, origTarget=%x, target=%x\n", i, a, origTarget, *target);
+			}
+			break;
+
+		default:
+			seterror("Unknown relocation type %x at relocation %d.\n", REL_TYPE(rel[i].r_info), i);
+			free(rel);
+			return false;
+		}
+	}
+
+	DBG("Done with relocation. extendedHi16=%d\n\n", extendedHi16);
+
+	free(rel);
+	return true;
+}
+
+bool DLObject::readElfHeader(int fd, Elf32_Ehdr *ehdr) {
+	// Start reading the elf header. Check for errors
+	if (read(fd, ehdr, sizeof(*ehdr)) != sizeof(*ehdr) ||
+	        memcmp(ehdr->e_ident, ELFMAG, SELFMAG) ||					// Check MAGIC
+	        ehdr->e_type != ET_EXEC ||									// Check for executable
+	        ehdr->e_machine != EM_MIPS ||								// Check for MIPS machine type
+	        ehdr->e_phentsize < sizeof(Elf32_Phdr)	 ||					// Check for size of program header
+	        ehdr->e_shentsize != sizeof(Elf32_Shdr)) {					// Check for size of section header
+		seterror("Invalid file type.");
+		return false;
+	}
+
+	DBG("phoff = %d, phentsz = %d, phnum = %d\n",
+	    ehdr->e_phoff, ehdr->e_phentsize, ehdr->e_phnum);
+
+	return true;
+}
+
+bool DLObject::readProgramHeaders(int fd, Elf32_Ehdr *ehdr, Elf32_Phdr *phdr, int num) {
+	// Read program header
+	if (lseek(fd, ehdr->e_phoff + sizeof(*phdr)*num, SEEK_SET) < 0 ||
+	        read(fd, phdr, sizeof(*phdr)) != sizeof(*phdr)) {
+		seterror("Program header load failed.");
+		return false;
+	}
+
+	// Check program header values
+	if (phdr->p_type != PT_LOAD  || phdr->p_filesz > phdr->p_memsz) {
+		seterror("Invalid program header.");
+		return false;
+	}
+
+	DBG("offs = %x, filesz = %x, memsz = %x, align = %x\n",
+	    phdr->p_offset, phdr->p_filesz, phdr->p_memsz, phdr->p_align);
+
+	return true;
+
+}
+
+bool DLObject::loadSegment(int fd, Elf32_Phdr *phdr) {
+
+	char *baseAddress = 0;
+
+	// We need to take account of non-allocated segment for shorts
+	if (phdr->p_flags & PF_X) {	// This is a relocated segment
+
+		// Attempt to allocate memory for segment
+		int extra = phdr->p_vaddr % phdr->p_align;	// Get extra length TODO: check logic here
+		DBG("extra mem is %x\n", extra);
+
+		if (phdr->p_align < 0x10000) phdr->p_align = 0x10000;	// Fix for wrong alignment on e.g. AGI
+
+		if (!(_segment = (char *)memalign(phdr->p_align, phdr->p_memsz + extra))) {
+			seterror("Out of memory.\n");
+			return false;
+		}
+		DBG("allocated segment @ %p\n", _segment);
+
+		// Get offset to load segment into
+		baseAddress = (char *)_segment + phdr->p_vaddr;
+		_segmentSize = phdr->p_memsz + extra;
+	} else {						// This is a shorts section.
+		_shortsSegment = ShortsMan.newSegment(phdr->p_memsz, (char *)phdr->p_vaddr);
+
+		baseAddress = _shortsSegment->getStart();
+		DBG("shorts segment @ %p to %p. Segment wants to be at %x. Offset=%x\n",
+		    _shortsSegment->getStart(), _shortsSegment->getEnd(), phdr->p_vaddr, _shortsSegment->getOffset());
+
+	}
+
+	// Set bss segment to 0 if necessary (assumes bss is at the end)
+	if (phdr->p_memsz > phdr->p_filesz) {
+		DBG("Setting %p to %p to 0 for bss\n", baseAddress + phdr->p_filesz, baseAddress + phdr->p_memsz);
+		memset(baseAddress + phdr->p_filesz, 0, phdr->p_memsz - phdr->p_filesz);
+	}
+	// Read the segment into memory
+	if (lseek(fd, phdr->p_offset, SEEK_SET) < 0 ||
+	        read(fd, baseAddress, phdr->p_filesz) != (ssize_t)phdr->p_filesz) {
+		seterror("Segment load failed.");
+		return false;
+	}
+
+	return true;
+}
+
+
+Elf32_Shdr * DLObject::loadSectionHeaders(int fd, Elf32_Ehdr *ehdr) {
+
+	Elf32_Shdr *shdr = NULL;
+
+	// Allocate memory for section headers
+	if (!(shdr = (Elf32_Shdr *)malloc(ehdr->e_shnum * sizeof(*shdr)))) {
+		seterror("Out of memory.");
+		return NULL;
+	}
+
+	// Read from file into section headers
+	if (lseek(fd, ehdr->e_shoff, SEEK_SET) < 0 ||
+	        read(fd, shdr, ehdr->e_shnum * sizeof(*shdr)) !=
+	        (ssize_t)(ehdr->e_shnum * sizeof(*shdr))) {
+		seterror("Section headers load failed.");
+		return NULL;
+	}
+
+	return shdr;
+}
+
+int DLObject::loadSymbolTable(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
+
+	// Loop over sections, looking for symbol table linked to a string table
+	for (int i = 0; i < ehdr->e_shnum; i++) {
+		//DBG("Section %d: type = %x, size = %x, entsize = %x, link = %x\n",
+		// i, shdr[i].sh_type, shdr[i].sh_size, shdr[i].sh_entsize, shdr[i].sh_link);
+
+		if (shdr[i].sh_type == SHT_SYMTAB &&
+		        shdr[i].sh_entsize == sizeof(Elf32_Sym) &&
+		        shdr[i].sh_link < ehdr->e_shnum &&
+		        shdr[shdr[i].sh_link].sh_type == SHT_STRTAB &&
+		        _symtab_sect < 0) {
+			_symtab_sect = i;
+		}
+	}
+
+	// Check for no symbol table
+	if (_symtab_sect < 0) {
+		seterror("No symbol table.");
+		return -1;
+	}
+
+	DBG("Symbol section at section %d, size %x\n", _symtab_sect, shdr[_symtab_sect].sh_size);
+
+	// Allocate memory for symbol table
+	if (!(_symtab = malloc(shdr[_symtab_sect].sh_size))) {
+		seterror("Out of memory.");
+		return -1;
+	}
+
+	// Read symbol table into memory
+	if (lseek(fd, shdr[_symtab_sect].sh_offset, SEEK_SET) < 0 ||
+	        read(fd, _symtab, shdr[_symtab_sect].sh_size) !=
+	        (ssize_t)shdr[_symtab_sect].sh_size) {
+		seterror("Symbol table load failed.");
+		return -1;
+	}
+
+	// Set number of symbols
+	_symbol_cnt = shdr[_symtab_sect].sh_size / sizeof(Elf32_Sym);
+	DBG("Loaded %d symbols.\n", _symbol_cnt);
+
+	return _symtab_sect;
+
+}
+
+bool DLObject::loadStringTable(int fd, Elf32_Shdr *shdr) {
+
+	int string_sect = shdr[_symtab_sect].sh_link;
+
+	// Allocate memory for string table
+	if (!(_strtab = (char *)malloc(shdr[string_sect].sh_size))) {
+		seterror("Out of memory.");
+		return false;
+	}
+
+	// Read string table into memory
+	if (lseek(fd, shdr[string_sect].sh_offset, SEEK_SET) < 0 ||
+	        read(fd, _strtab, shdr[string_sect].sh_size) !=
+	        (ssize_t)shdr[string_sect].sh_size) {
+		seterror("Symbol table strings load failed.");
+		return false;
+	}
+	return true;
+}
+
+void DLObject::relocateSymbols(Elf32_Addr offset, Elf32_Addr shortsOffset) {
+
+	int shortsCount = 0, othersCount = 0;
+	DBG("Relocating symbols by %x. Shorts offset=%x\n", offset, shortsOffset);
+
+	// Loop over symbols, add relocation offset
+	Elf32_Sym *s = (Elf32_Sym *)_symtab;
+	for (int c = _symbol_cnt; c--; s++) {
+		// Make sure we don't relocate special valued symbols
+		if (s->st_shndx < SHN_LOPROC) {
+			if (!ShortsMan.inGeneralSegment((char *)s->st_value)) {
+				othersCount++;
+				s->st_value += offset;
+				if (s->st_value < (Elf32_Addr)_segment || s->st_value > (Elf32_Addr)_segment + _segmentSize)
+					seterror("Symbol out of bounds! st_value = %x\n", s->st_value);
+			} else {	// shorts section
+				shortsCount++;
+				s->st_value += shortsOffset;
+				if (!_shortsSegment->inSegment((char *)s->st_value))
+					seterror("Symbol out of bounds! st_value = %x\n", s->st_value);
+			}
+
+		}
+
+	}
+
+	DBG("Relocated %d short symbols, %d others.\n", shortsCount, othersCount);
+}
+
+bool DLObject::relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
+
+	// Loop over sections, finding relocation sections
+	for (int i = 0; i < ehdr->e_shnum; i++) {
+
+		Elf32_Shdr *curShdr = &(shdr[i]);
+		//Elf32_Shdr *linkShdr = &(shdr[curShdr->sh_info]);
+
+		if (curShdr->sh_type == SHT_REL && 						// Check for a relocation section
+		        curShdr->sh_entsize == sizeof(Elf32_Rel) &&		    // Check for proper relocation size
+		        (int)curShdr->sh_link == _symtab_sect &&			// Check that the sh_link connects to our symbol table
+		        curShdr->sh_info < ehdr->e_shnum &&					// Check that the relocated section exists
+		        (shdr[curShdr->sh_info].sh_flags & SHF_ALLOC)) {  	// Check if relocated section resides in memory
+			if (!ShortsMan.inGeneralSegment((char *)shdr[curShdr->sh_info].sh_addr)) {			// regular segment
+				if (!relocate(fd, curShdr->sh_offset, curShdr->sh_size, _segment)) {
+					return false;
+				}
+			} else { 	// In Shorts segment
+				if (!relocate(fd, curShdr->sh_offset, curShdr->sh_size, (void *)_shortsSegment->getOffset())) {
+					return false;
+				}
+			}
+
+		}
+	}
+
+	return true;
+}
+
+
+bool DLObject::load(int fd) {
+	fprintf(stderr, "In DLObject::load\n");
+
+	Elf32_Ehdr ehdr;	// ELF header
+	Elf32_Phdr phdr;	// Program header
+	Elf32_Shdr *shdr;	// Section header
+	bool ret = true;
+
+	if (readElfHeader(fd, &ehdr) == false) {
+		return false;
+	}
+
+	for (int i = 0; i < ehdr.e_phnum; i++) {	//	Load our 2 segments
+
+		fprintf(stderr, "Loading segment %d\n", i);
+
+		if (readProgramHeaders(fd, &ehdr, &phdr, i) == false)
+			return false;
+
+		if (!loadSegment(fd, &phdr))
+			return false;
+	}
+
+	if ((shdr = loadSectionHeaders(fd, &ehdr)) == NULL)
+		ret = false;
+
+	if (ret && ((_symtab_sect = loadSymbolTable(fd, &ehdr, shdr)) < 0))
+		ret = false;
+
+	if (ret && (loadStringTable(fd, shdr) == false))
+		ret = false;
+
+	if (ret)
+		relocateSymbols((Elf32_Addr)_segment, _shortsSegment->getOffset());	// Offset by our segment allocated address
+
+	if (ret && (relocateRels(fd, &ehdr, shdr) == false))
+		ret = false;
+
+	free(shdr);
+
+	return ret;
+}
+
+bool DLObject::open(const char *path) {
+	int fd;
+	void *ctors_start, *ctors_end;
+
+	DBG("open(\"%s\")\n", path);
+
+	// Get the address of the global pointer
+	_gpVal = (unsigned int) & _gp;
+	DBG("_gpVal is %x\n", _gpVal);
+
+	PowerMan.beginCriticalSection();
+
+	if ((fd = ::open(path, O_RDONLY)) < 0) {
+		seterror("%s not found.", path);
+		return false;
+	}
+
+	// Try to load and relocate
+	if (!load(fd)) {
+		::close(fd);
+		unload();
+		return false;
+	}
+
+	::close(fd);
+
+	PowerMan.endCriticalSection();
+
+	// flush data cache
+	sceKernelDcacheWritebackAll();
+
+	// Get the symbols for the global constructors and destructors
+	ctors_start = symbol("___plugin_ctors");
+	ctors_end = symbol("___plugin_ctors_end");
+	_dtors_start = symbol("___plugin_dtors");
+	_dtors_end = symbol("___plugin_dtors_end");
+
+	if (ctors_start == NULL || ctors_end == NULL || _dtors_start == NULL ||
+	        _dtors_end == NULL) {
+		seterror("Missing ctors/dtors.");
+		_dtors_start = _dtors_end = NULL;
+		unload();
+		return false;
+	}
+
+	DBG("Calling constructors.\n");
+	for (void (**f)(void) = (void (**)(void))ctors_start; f != ctors_end; f++)
+		(**f)();
+
+	DBG("%s opened ok.\n", path);
+	return true;
+}
+
+bool DLObject::close() {
+	if (_dtors_start != NULL && _dtors_end != NULL)
+		for (void (**f)(void) = (void (**)(void))_dtors_start; f != _dtors_end; f++)
+			(**f)();
+	_dtors_start = _dtors_end = NULL;
+	unload();
+	return true;
+}
+
+void *DLObject::symbol(const char *name) {
+	DBG("symbol(\"%s\")\n", name);
+
+	if (_symtab == NULL || _strtab == NULL || _symbol_cnt < 1) {
+		seterror("No symbol table loaded.");
+		return NULL;
+	}
+
+	Elf32_Sym *s = (Elf32_Sym *)_symtab;
+	for (int c = _symbol_cnt; c--; s++) {
+
+		// We can only import symbols that are global or weak in the plugin
+		if ((SYM_BIND(s->st_info) == STB_GLOBAL || SYM_BIND(s->st_info) == STB_WEAK) &&
+		        /*_strtab[s->st_name] == '_' && */ // Try to make this more efficient
+		        !strcmp(name, _strtab + s->st_name)) {
+
+			// We found the symbol
+			DBG("=> %p\n", (void*)s->st_value);
+			return (void*)s->st_value;
+		}
+	}
+
+	seterror("Symbol \"%s\" not found.", name);
+	return NULL;
+}
+
+
+
+ShortSegmentManager::ShortSegmentManager() {
+	_shortsStart = &__plugin_hole_start ;
+	_shortsEnd = &__plugin_hole_end;
+}
+
+ShortSegmentManager::Segment *ShortSegmentManager::newSegment(int size, char *origAddr) {
+	char *lastAddress = origAddr;
+	Common::List<Segment *>::iterator i;
+
+	// Find a block that fits, starting from the beginning
+	for (i = _list.begin(); i != _list.end(); ++i) {
+		char *currAddress = (*i)->getStart();
+
+		if ((int)(currAddress - lastAddress) >= size) break;
+
+		lastAddress = (*i)->getEnd();
+	}
+
+	if ((Elf32_Addr)lastAddress & 3)
+		lastAddress += 4 - ((Elf32_Addr)lastAddress & 3);	// Round up to multiple of 4
+
+	if (lastAddress + size > _shortsEnd) {
+		seterror("Error. No space in shorts segment for %x bytes. Last address is %p, max address is %p.\n",
+		         size, lastAddress, _shortsEnd);
+		return NULL;
+	}
+
+	Segment *seg = new Segment(lastAddress, size, origAddr);	// Create a new segment
+
+	if (lastAddress + size > _highestAddress) _highestAddress = lastAddress + size;	// Keep track of maximum
+
+	_list.insert(i, seg);
+
+	DBG("Shorts segment size %x allocated. End = %p. Remaining space = %x. Highest so far is %p.\n",
+	    size, lastAddress + size, _shortsEnd - _list.back()->getEnd(), _highestAddress);
+
+	return seg;
+}
+
+void ShortSegmentManager::deleteSegment(ShortSegmentManager::Segment *seg) {
+	DBG("Deleting shorts segment from %p to %p.\n\n", seg->getStart(), seg->getEnd());
+	_list.remove(seg);
+	delete seg;
+}
+
+static char dlerr[MAXDLERRLEN];
+
+void *dlopen(const char *filename, int flags) {
+	DLObject *obj = new DLObject(dlerr);
+	if (obj->open(filename))
+		return (void *)obj;
+	delete obj;
+	return NULL;
+}
+
+int dlclose(void *handle) {
+	DLObject *obj = (DLObject *)handle;
+	if (obj == NULL) {
+		strcpy(dlerr, "Handle is NULL.");
+		return -1;
+	}
+	if (obj->close()) {
+		delete obj;
+		return 0;
+	}
+	return -1;
+}
+
+void *dlsym(void *handle, const char *symbol) {
+	if (handle == NULL) {
+		strcpy(dlerr, "Handle is NULL.");
+		return NULL;
+	}
+	return ((DLObject *)handle)->symbol(symbol);
+}
+
+const char *dlerror() {
+	return dlerr;
+}
+
+void dlforgetsyms(void *handle) {
+	if (handle != NULL)
+		((DLObject *)handle)->discard_symtab();
+}
+
+
+#endif /* DYNAMIC_MODULES && __PS2__ */
diff --git a/backends/platform/ps2/ps2loader.h b/backends/platform/ps2/ps2loader.h
new file mode 100644
index 0000000000..91916d755c
--- /dev/null
+++ b/backends/platform/ps2/ps2loader.h
@@ -0,0 +1,137 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/branches/gsoc2010-plugins/backends/platform/ps2/ps2loader.h $
+ * TODO: $ID
+ *
+ */
+
+#ifndef PS2LOADER_H
+#define PS2LOADER_H
+
+#include "elf32.h"
+#include "common/list.h"
+#include "common/singleton.h"
+
+#define MAXDLERRLEN 80
+
+#define ShortsMan	ShortSegmentManager::instance()
+
+class ShortSegmentManager : public Common::Singleton<ShortSegmentManager> {
+private:
+	char *_shortsStart;
+	char *_shortsEnd;
+
+public:
+	char *getShortsStart() {
+		return _shortsStart;
+	}
+	bool inGeneralSegment(char *addr) {
+		return ((char *)addr >= _shortsStart && (char *)addr < _shortsEnd);
+	}
+
+	class Segment {
+	private:
+		friend class ShortSegmentManager;
+		Segment(char *start, int size, char *origAddr) : _startAddress(start), _size(size), _origAddress(origAddr) {}
+		~Segment() {}
+		char *_startAddress;		// Start of shorts segment in memory
+		int  _size;					// Size of shorts segment
+		char *_origAddress;			// Original address this segment was supposed to be at
+	public:
+		char *getStart() {
+			return _startAddress;
+		}
+		char *getEnd() {
+			return (_startAddress + _size);
+		}
+		Elf32_Addr getOffset() {
+			return (Elf32_Addr)(_startAddress - _origAddress);
+		}
+		bool inSegment(char *addr) {
+			return ((char *)addr >= _startAddress && (char *)addr <= _startAddress + _size);
+		}
+	};
+
+	Segment *newSegment(int size, char *origAddr);
+	void deleteSegment(Segment *);
+
+private:
+	ShortSegmentManager();
+	friend class Common::Singleton<ShortSegmentManager>;
+	Common::List<Segment *> _list;
+	char *_highestAddress;
+};
+
+
+
+
+class DLObject {
+protected:
+	char *_errbuf; /* For error messages, at least MAXDLERRLEN in size */
+
+	ShortSegmentManager::Segment *_shortsSegment;			// For assigning shorts ranges
+	void *_segment, *_symtab;
+	char *_strtab;
+	int _symbol_cnt;
+	int _symtab_sect;
+	void *_dtors_start, *_dtors_end;
+
+	unsigned int _gpVal;		// Value of Global Pointer
+	int _segmentSize;
+
+	void seterror(const char *fmt, ...);
+	void unload();
+	bool relocate(int fd, unsigned long offset, unsigned long size, void *);
+	bool load(int fd);
+
+	bool readElfHeader(int fd, Elf32_Ehdr *ehdr);
+	bool readProgramHeaders(int fd, Elf32_Ehdr *ehdr, Elf32_Phdr *phdr, int num);
+	bool loadSegment(int fd, Elf32_Phdr *phdr);
+	Elf32_Shdr *loadSectionHeaders(int fd, Elf32_Ehdr *ehdr);
+	int loadSymbolTable(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr);
+	bool loadStringTable(int fd, Elf32_Shdr *shdr);
+	void relocateSymbols(Elf32_Addr offset, Elf32_Addr shortsOffset);
+	bool relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr);
+
+public:
+	bool open(const char *path);
+	bool close();
+	void *symbol(const char *name);
+	void discard_symtab();
+
+	DLObject(char *errbuf = NULL) : _errbuf(_errbuf), _shortsSegment(NULL), _segment(NULL), _symtab(NULL),
+			_strtab(NULL), _symbol_cnt(0), _symtab_sect(-1), _dtors_start(NULL), _dtors_end(NULL), _gpVal(0) ,
+			_segmentSize(0) {}
+};
+
+
+
+#define RTLD_LAZY 0
+
+extern "C" {
+	void *dlopen(const char *filename, int flags);
+	int dlclose(void *handle);
+	void *dlsym(void *handle, const char *symbol);
+	const char *dlerror();
+	void dlforgetsyms(void *handle);
+}
+
+#endif /* PS2LOADER_H */