diff options
Diffstat (limited to 'backends/platform/psp')
| -rw-r--r-- | backends/platform/psp/Makefile | 9 | ||||
| -rw-r--r-- | backends/platform/psp/module.mk | 1 | ||||
| -rw-r--r-- | backends/platform/psp/plugin.ld | 239 | ||||
| -rw-r--r-- | backends/platform/psp/plugin.syms | 8 | ||||
| -rw-r--r-- | backends/platform/psp/psploader.cpp | 732 | ||||
| -rw-r--r-- | backends/platform/psp/psploader.h | 137 |
6 files changed, 5 insertions, 1121 deletions
diff --git a/backends/platform/psp/Makefile b/backends/platform/psp/Makefile index a104e3297a..9f6b5c8921 100644 --- a/backends/platform/psp/Makefile +++ b/backends/platform/psp/Makefile @@ -67,7 +67,7 @@ endif # Variables for common Scummvm makefile CXX = psp-g++ CXXFLAGS = -O3 -Wall -Wno-multichar -fno-exceptions -fno-rtti -DEFINES = -D__PSP__ -DNONSTANDARD_PORT -DDISABLE_TEXT_CONSOLE -DDISABLE_COMMAND_LINE -DUSE_ZLIB -DDISABLE_DOSBOX_OPL -DUSE_RGB_COLOR +DEFINES = -D__PSP__ -DNONSTANDARD_PORT -DDISABLE_TEXT_CONSOLE -DDISABLE_COMMAND_LINE -DUSE_ZLIB -DDISABLE_DOSBOX_OPL -DUSE_RGB_COLOR -DUSE_ELF_LOADER -DMIPS_TARGET LDFLAGS := INCDIR := $(srcdir) . $(srcdir)/engines/ $(PSPSDK)/include @@ -87,8 +87,8 @@ CXX_UPDATE_DEP_FLAG = -Wp,-MMD,"$(*D)/$(DEPDIR)/$(*F).d",-MQ,"$@",-MP # Variables for dynamic plugin building PLUGIN_PREFIX = PLUGIN_SUFFIX = .plg -PLUGIN_EXTRA_DEPS = plugin.syms scummvm-psp.elf -PLUGIN_LDFLAGS = -nostartfiles -Wl,-q,--just-symbols=scummvm-psp.org.elf,-Tplugin.ld,--retain-symbols-file,plugin.syms -lstdc++ -lc +PLUGIN_EXTRA_DEPS = $(srcdir)/backends/plugins/elf/plugin.syms scummvm-psp.elf +PLUGIN_LDFLAGS = -nostartfiles -Wl,-q,--just-symbols=scummvm-psp.org.elf,-T$(srcdir)/backends/plugins/psp/plugin.ld,--retain-symbols-file,$(srcdir)/backends/plugins/elf/plugin.syms -lstdc++ -lc # PSP-specific variables STRIP = psp-strip @@ -128,6 +128,7 @@ PSPLIBS = -lpspprof -lpspvfpu -lpspdebug -lpspgu -lpspge -lpspdisplay -lpspctrl -lpsputility -lpspuser -lpsppower -lpsphprm -lpspsdk -lpsprtc -lpspaudio -lpspaudiocodec \ -lpspkernel -lpspnet_inet + # Add in PSPSDK includes and libraries. LIBS += -lpng -lz -lstdc++ -lc -lm $(PSPLIBS) @@ -142,7 +143,6 @@ OBJS := powerman.o \ input.o \ cursor.o \ trace.o \ - psploader.o \ pspkeyboard.o \ audio.o \ thread.o \ @@ -153,6 +153,7 @@ OBJS := powerman.o \ tests.o \ dummy.o + BACKEND := psp # Include common Scummvm makefile diff --git a/backends/platform/psp/module.mk b/backends/platform/psp/module.mk index cdd0fa0ef5..e3eac153dd 100644 --- a/backends/platform/psp/module.mk +++ b/backends/platform/psp/module.mk @@ -11,7 +11,6 @@ MODULE_OBJS := powerman.o \ input.o \ cursor.o \ trace.o \ - psploader.o \ pspkeyboard.o \ audio.o \ thread.o \ diff --git a/backends/platform/psp/plugin.ld b/backends/platform/psp/plugin.ld deleted file mode 100644 index 7534c15290..0000000000 --- a/backends/platform/psp/plugin.ld +++ /dev/null @@ -1,239 +0,0 @@ -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. */ - .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. */ - .sceStub.text : { *(.sceStub.text) *(SORT(.sceStub.text.*)) } - PROVIDE (__etext = .); - PROVIDE (_etext = .); - PROVIDE (etext = .); - /* PSP library entry table and library stub table. */ - .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. */ - .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/psp/plugin.syms b/backends/platform/psp/plugin.syms deleted file mode 100644 index 24ee1a19dc..0000000000 --- a/backends/platform/psp/plugin.syms +++ /dev/null @@ -1,8 +0,0 @@ -PLUGIN_getVersion -PLUGIN_getType -PLUGIN_getTypeVersion -PLUGIN_getObject -___plugin_ctors -___plugin_ctors_end -___plugin_dtors -___plugin_dtors_end diff --git a/backends/platform/psp/psploader.cpp b/backends/platform/psp/psploader.cpp deleted file mode 100644 index 464e20770c..0000000000 --- a/backends/platform/psp/psploader.cpp +++ /dev/null @@ -1,732 +0,0 @@ -/* 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. - * - * $URL$ - * $Id$ - * - */ - -#if defined(DYNAMIC_MODULES) && defined(__PSP__) - -#include <string.h> -#include <stdarg.h> -#include <stdio.h> -#include <malloc.h> -#include <unistd.h> -#include <sys/_default_fcntl.h> - -#include <psputils.h> - -#include "backends/platform/psp/psploader.h" -#include "backends/platform/psp/powerman.h" - -//#define __PSP_DEBUG_FUNCS__ /* For debugging the stack */ -//#define __PSP_DEBUG_PRINT__ - -#include "backends/platform/psp/trace.h" - -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() { - DEBUG_ENTER_FUNC(); - free(_symtab); - free(_strtab); - _symtab = NULL; - _strtab = NULL; - _symbol_cnt = 0; -} - -// Unload all objects from memory -void DLObject::unload() { - DEBUG_ENTER_FUNC(); - 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) { - DEBUG_ENTER_FUNC(); - Elf32_Rel *rel = NULL; // relocation entry - - // Allocate memory for relocation table - if (!(rel = (Elf32_Rel *)malloc(size))) { - PSP_ERROR("Out of memory."); - return false; - } - - // Read in our relocation table - if (lseek(fd, offset, SEEK_SET) < 0 || - read(fd, rel, size) != (ssize_t)size) { - PSP_ERROR("Relocation table load failed."); - free(rel); - return false; - } - - // Treat each relocation entry. Loop over all of them - int cnt = size / sizeof(*rel); - - PSP_DEBUG_PRINT("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); - - PSP_DEBUG_DO(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 - PSP_DEBUG_PRINT("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 - PSP_ERROR("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) - PSP_DEBUG_PRINT("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) - PSP_DEBUG_PRINT("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) - PSP_DEBUG_PRINT("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) - PSP_DEBUG_PRINT("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) - PSP_DEBUG_PRINT("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) - PSP_DEBUG_PRINT("R_MIPS_32: i=%d, a=%x, origTarget=%x, target=%x\n", i, a, origTarget, *target); - } - break; - - default: - PSP_ERROR("Unknown relocation type %x at relocation %d.\n", REL_TYPE(rel[i].r_info), i); - free(rel); - return false; - } - } - - PSP_DEBUG_PRINT("Done with relocation. extendedHi16=%d\n\n", extendedHi16); - - free(rel); - return true; -} - -bool DLObject::readElfHeader(int fd, Elf32_Ehdr *ehdr) { - DEBUG_ENTER_FUNC(); - // 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 - PSP_ERROR("Invalid file type."); - return false; - } - - PSP_DEBUG_PRINT("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) { - DEBUG_ENTER_FUNC(); - // Read program header - if (lseek(fd, ehdr->e_phoff + sizeof(*phdr)*num, SEEK_SET) < 0 || - read(fd, phdr, sizeof(*phdr)) != sizeof(*phdr)) { - PSP_ERROR("Program header load failed."); - return false; - } - - // Check program header values - if (phdr->p_type != PT_LOAD || phdr->p_filesz > phdr->p_memsz) { - PSP_ERROR("Invalid program header."); - return false; - } - - PSP_DEBUG_PRINT("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) { - DEBUG_ENTER_FUNC(); - - 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 - PSP_DEBUG_PRINT("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))) { - PSP_ERROR("Out of memory.\n"); - return false; - } - PSP_DEBUG_PRINT("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(); - PSP_DEBUG_PRINT("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) { - PSP_DEBUG_PRINT("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) { - PSP_ERROR("Segment load failed."); - return false; - } - - return true; -} - - -Elf32_Shdr * DLObject::loadSectionHeaders(int fd, Elf32_Ehdr *ehdr) { - DEBUG_ENTER_FUNC(); - - Elf32_Shdr *shdr = NULL; - - // Allocate memory for section headers - if (!(shdr = (Elf32_Shdr *)malloc(ehdr->e_shnum * sizeof(*shdr)))) { - PSP_ERROR("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))) { - PSP_ERROR("Section headers load failed."); - return NULL; - } - - return shdr; -} - -int DLObject::loadSymbolTable(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) { - DEBUG_ENTER_FUNC(); - - // Loop over sections, looking for symbol table linked to a string table - for (int i = 0; i < ehdr->e_shnum; i++) { - PSP_DEBUG_PRINT("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) { - PSP_ERROR("No symbol table."); - return -1; - } - - PSP_DEBUG_PRINT("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))) { - PSP_ERROR("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) { - PSP_ERROR("Symbol table load failed."); - return -1; - } - - // Set number of symbols - _symbol_cnt = shdr[_symtab_sect].sh_size / sizeof(Elf32_Sym); - PSP_DEBUG_PRINT("Loaded %d symbols.\n", _symbol_cnt); - - return _symtab_sect; - -} - -bool DLObject::loadStringTable(int fd, Elf32_Shdr *shdr) { - DEBUG_ENTER_FUNC(); - - int string_sect = shdr[_symtab_sect].sh_link; - - // Allocate memory for string table - if (!(_strtab = (char *)malloc(shdr[string_sect].sh_size))) { - PSP_ERROR("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) { - PSP_ERROR("Symbol table strings load failed."); - return false; - } - return true; -} - -void DLObject::relocateSymbols(Elf32_Addr offset, Elf32_Addr shortsOffset) { - DEBUG_ENTER_FUNC(); - - int shortsCount = 0, othersCount = 0; - PSP_DEBUG_PRINT("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) - PSP_ERROR("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)) - PSP_ERROR("Symbol out of bounds! st_value = %x\n", s->st_value); - } - - } - - } - - PSP_DEBUG_PRINT("Relocated %d short symbols, %d others.\n", shortsCount, othersCount); -} - -bool DLObject::relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) { - DEBUG_ENTER_FUNC(); - - // 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) { - DEBUG_ENTER_FUNC(); - - 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 - PSP_DEBUG_PRINT("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) { - DEBUG_ENTER_FUNC(); - int fd; - void *ctors_start, *ctors_end; - - PSP_DEBUG_PRINT("open(\"%s\")\n", path); - - // Get the address of the global pointer - _gpVal = (unsigned int) & _gp; - PSP_DEBUG_PRINT("_gpVal is %x\n", _gpVal); - - PowerMan.beginCriticalSection(); - - if ((fd = ::open(path, O_RDONLY)) < 0) { - PSP_ERROR("%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) { - PSP_ERROR("Missing ctors/dtors."); - _dtors_start = _dtors_end = NULL; - unload(); - return false; - } - - PSP_DEBUG_PRINT("Calling constructors.\n"); - for (void (**f)(void) = (void (**)(void))ctors_start; f != ctors_end; f++) - (**f)(); - - PSP_DEBUG_PRINT("%s opened ok.\n", path); - return true; -} - -bool DLObject::close() { - DEBUG_ENTER_FUNC(); - 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) { - DEBUG_ENTER_FUNC(); - PSP_DEBUG_PRINT("symbol(\"%s\")\n", name); - - if (_symtab == NULL || _strtab == NULL || _symbol_cnt < 1) { - PSP_ERROR("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 - PSP_DEBUG_PRINT("=> %p\n", (void*)s->st_value); - return (void*)s->st_value; - } - } - - PSP_ERROR("Symbol \"%s\" not found.", name); - return NULL; -} - - - -ShortSegmentManager::ShortSegmentManager() { - DEBUG_ENTER_FUNC(); - _shortsStart = &__plugin_hole_start ; - _shortsEnd = &__plugin_hole_end; -} - -ShortSegmentManager::Segment *ShortSegmentManager::newSegment(int size, char *origAddr) { - DEBUG_ENTER_FUNC(); - 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) { - PSP_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); - - PSP_DEBUG_PRINT("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) { - DEBUG_ENTER_FUNC(); - PSP_DEBUG_PRINT("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 && __PSP__ */ diff --git a/backends/platform/psp/psploader.h b/backends/platform/psp/psploader.h deleted file mode 100644 index 13dcf6ef98..0000000000 --- a/backends/platform/psp/psploader.h +++ /dev/null @@ -1,137 +0,0 @@ -/* 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. - * - * $URL$ - * $Id$ - * - */ - -#ifndef PSPLOADER_H -#define PSPLOADER_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 /* PSPLOADER_H */ |