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authorTony Puccinelli2010-07-13 06:48:43 +0000
committerTony Puccinelli2010-07-13 06:48:43 +0000
commit4d92cefb2fd146d4d56b23dd9d11fb5a30899b2d (patch)
tree8f6e35cdb436341f9fa228f83fae244ccae390e7 /backends/platform/ds
parent9d06726b6904f57ca62f3ff89e8c609acbe13ee2 (diff)
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Changed loader to use Common::SeekableReadStream (compiles but doesn't run and needs polishing)
svn-id: r50843
Diffstat (limited to 'backends/platform/ds')
-rw-r--r--backends/platform/ds/arm9/source/dsloader.cpp77
-rw-r--r--backends/platform/ds/arm9/source/dsloader.h18
2 files changed, 45 insertions, 50 deletions
diff --git a/backends/platform/ds/arm9/source/dsloader.cpp b/backends/platform/ds/arm9/source/dsloader.cpp
index ad5160a5b2..595b4fbc54 100644
--- a/backends/platform/ds/arm9/source/dsloader.cpp
+++ b/backends/platform/ds/arm9/source/dsloader.cpp
@@ -33,12 +33,8 @@
#include <unistd.h>
#include <sys/_default_fcntl.h>
-#include "common/str.h"
-#include "common/util.h"
-#include "backends/fs/stdiostream.h"
+//#include "backends/fs/stdiostream.h"
#include "backends/fs/ds/ds-fs.h"
-#include "dsmain.h"
-#include "fat/gba_nds_fat.h"
#include "backends/platform/ds/arm9/source/dsloader.h"
@@ -71,12 +67,12 @@ void DLObject::unload() {
/**
* Follow the instruction of a relocation section.
*
- * @param fd File Descriptor
+ * @param DLFile SeekableReadStream of File
* @param offset Offset into the File
* @param size Size of relocation section
*
*/
-bool DLObject::relocate(int fd, unsigned long offset, unsigned long size, void *relSegment) {
+bool DLObject::relocate(Common::SeekableReadStream* DLFile, unsigned long offset, unsigned long size, void *relSegment) {
Elf32_Rela *rela; //relocation entry
// Allocate memory for relocation table
@@ -86,8 +82,8 @@ bool DLObject::relocate(int fd, unsigned long offset, unsigned long size, void *
}
// Read in our relocation table
- if (lseek(fd, offset, SEEK_SET) < 0 ||
- read(fd, rela, size) != (ssize_t)size) {
+ if (DLFile->seek(offset, SEEK_SET) < 0 ||
+ DLFile->read(rela, size) != (ssize_t)size) {
seterror("Relocation table load failed.");
free(rela);
return false;
@@ -121,10 +117,10 @@ bool DLObject::relocate(int fd, unsigned long offset, unsigned long size, void *
return true;
}
-bool DLObject::readElfHeader(int fd, Elf32_Ehdr *ehdr) {
+bool DLObject::readElfHeader(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr) {
// Start reading the elf header. Check for errors
- if (read(fd, ehdr, sizeof(*ehdr)) != sizeof(*ehdr) ||
+ if (DLFile->read(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_ARM || // Check for ARM machine type
@@ -140,11 +136,11 @@ bool DLObject::readElfHeader(int fd, Elf32_Ehdr *ehdr) {
return true;
}
-bool DLObject::readProgramHeaders(int fd, Elf32_Ehdr *ehdr, Elf32_Phdr *phdr, int num) {
+bool DLObject::readProgramHeaders(Common::SeekableReadStream* DLFile, 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)) {
+ if (DLFile->seek(ehdr->e_phoff + sizeof(*phdr)*num, SEEK_SET) < 0 ||
+ DLFile->read(phdr, sizeof(*phdr)) != sizeof(*phdr)) {
seterror("Program header load failed.");
return false;
}
@@ -162,7 +158,7 @@ bool DLObject::readProgramHeaders(int fd, Elf32_Ehdr *ehdr, Elf32_Phdr *phdr, in
}
-bool DLObject::loadSegment(int fd, Elf32_Phdr *phdr) {
+bool DLObject::loadSegment(Common::SeekableReadStream* DLFile, Elf32_Phdr *phdr) {
char *baseAddress = 0;
@@ -186,8 +182,8 @@ bool DLObject::loadSegment(int fd, Elf32_Phdr *phdr) {
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) {
+ if (DLFile->seek(phdr->p_offset, SEEK_SET) < 0 ||
+ DLFile->read(baseAddress, phdr->p_filesz) != (ssize_t)phdr->p_filesz) {
seterror("Segment load failed.");
return false;
}
@@ -195,7 +191,7 @@ bool DLObject::loadSegment(int fd, Elf32_Phdr *phdr) {
return true;
}
-Elf32_Shdr * DLObject::loadSectionHeaders(int fd, Elf32_Ehdr *ehdr) {
+Elf32_Shdr * DLObject::loadSectionHeaders(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr) {
Elf32_Shdr *shdr = NULL;
@@ -206,8 +202,8 @@ Elf32_Shdr * DLObject::loadSectionHeaders(int fd, Elf32_Ehdr *ehdr) {
}
// Read from file into section headers
- if (lseek(fd, ehdr->e_shoff, SEEK_SET) < 0 ||
- read(fd, shdr, ehdr->e_shnum * sizeof(*shdr)) !=
+ if (DLFile->seek(ehdr->e_shoff, SEEK_SET) < 0 ||
+ DLFile->read(shdr, ehdr->e_shnum * sizeof(*shdr)) !=
(ssize_t)(ehdr->e_shnum * sizeof(*shdr))) {
seterror("Section headers load failed.");
return NULL;
@@ -216,7 +212,7 @@ Elf32_Shdr * DLObject::loadSectionHeaders(int fd, Elf32_Ehdr *ehdr) {
return shdr;
}
-int DLObject::loadSymbolTable(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
+int DLObject::loadSymbolTable(Common::SeekableReadStream* DLFile, 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++) {
@@ -244,8 +240,8 @@ int DLObject::loadSymbolTable(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
}
// Read symbol table into memory
- if (lseek(fd, shdr[_symtab_sect].sh_offset, SEEK_SET) < 0 ||
- read(fd, _symtab, shdr[_symtab_sect].sh_size) !=
+ if (DLFile->seek(shdr[_symtab_sect].sh_offset, SEEK_SET) < 0 ||
+ DLFile->read(_symtab, shdr[_symtab_sect].sh_size) !=
(ssize_t)shdr[_symtab_sect].sh_size) {
seterror("Symbol table load failed.");
return -1;
@@ -259,7 +255,7 @@ int DLObject::loadSymbolTable(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
}
-bool DLObject::loadStringTable(int fd, Elf32_Shdr *shdr) {
+bool DLObject::loadStringTable(Common::SeekableReadStream* DLFile, Elf32_Shdr *shdr) {
int string_sect = shdr[_symtab_sect].sh_link;
@@ -270,8 +266,8 @@ bool DLObject::loadStringTable(int fd, Elf32_Shdr *shdr) {
}
// Read string table into memory
- if (lseek(fd, shdr[string_sect].sh_offset, SEEK_SET) < 0 ||
- read(fd, _strtab, shdr[string_sect].sh_size) !=
+ if (DLFile->seek(shdr[string_sect].sh_offset, SEEK_SET) < 0 ||
+ DLFile->read(_strtab, shdr[string_sect].sh_size) !=
(ssize_t)shdr[string_sect].sh_size) {
seterror("Symbol table strings load failed.");
return false;
@@ -302,7 +298,7 @@ void DLObject::relocateSymbols(Elf32_Addr offset) {
DBG("Relocated %d symbols.\n",relocCount);
}
-bool DLObject::relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
+bool DLObject::relocateRels(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
// Loop over sections, finding relocation sections
for (int i = 0; i < ehdr->e_shnum; i++) {
@@ -316,7 +312,7 @@ bool DLObject::relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
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 (!relocate(fd, curShdr->sh_offset, curShdr->sh_size, _segment)) {
+ if (!relocate(DLFile, curShdr->sh_offset, curShdr->sh_size, _segment)) {
return false;
}
@@ -326,7 +322,7 @@ bool DLObject::relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) {
return true;
}
-bool DLObject::load(int fd) {
+bool DLObject::load(Common::SeekableReadStream* DLFile) {
Elf32_Ehdr ehdr;
Elf32_Phdr phdr;
Elf32_Shdr *shdr;
@@ -334,7 +330,7 @@ bool DLObject::load(int fd) {
//int symtab_sect = -1;
- if (readElfHeader(fd, &ehdr) == false) {
+ if (readElfHeader(DLFile, &ehdr) == false) {
return false;
}
@@ -342,26 +338,26 @@ bool DLObject::load(int fd) {
DBG("Loading segment %d\n", i);
- if (readProgramHeaders(fd, &ehdr, &phdr, i) == false)
+ if (readProgramHeaders(DLFile, &ehdr, &phdr, i) == false)
return false;
- if (!loadSegment(fd, &phdr))
+ if (!loadSegment(DLFile, &phdr))
return false;
}
- if ((shdr = loadSectionHeaders(fd, &ehdr)) == NULL)
+ if ((shdr = loadSectionHeaders(DLFile, &ehdr)) == NULL)
ret = false;
- if (ret && ((_symtab_sect = loadSymbolTable(fd, &ehdr, shdr)) < 0))
+ if (ret && ((_symtab_sect = loadSymbolTable(DLFile, &ehdr, shdr)) < 0))
ret = false;
- if (ret && (loadStringTable(fd, shdr) == false))
+ if (ret && (loadStringTable(DLFile, shdr) == false))
ret = false;
if (ret)
relocateSymbols((Elf32_Addr)_segment); // Offset by our segment allocated address
- if (ret && (relocateRels(fd, &ehdr, shdr) == false))
+ if (ret && (relocateRels(DLFile, &ehdr, shdr) == false))
ret = false;
free(shdr);
@@ -371,9 +367,8 @@ bool DLObject::load(int fd) {
}
bool DLObject::open(const char *path) {
- int fd;
- Common::SeekableReadStream* DLFile; //TODO: reimplement everything with SeekableReadStream instead of fd
+ Common::SeekableReadStream* DLFile;
void *ctors_start, *ctors_end;
DBG("open(\"%s\")\n", path);
@@ -388,13 +383,13 @@ bool DLObject::open(const char *path) {
DBG("%s found!\n", path);
/*Try to load and relocate*/
- if (!load(fd)) {
- ::close(fd);
+ if (!load(DLFile)) {
+ //DLFile->finalize();
unload();
return false;
}
- ::close(fd);
+ //DLFile->finalize();
//TODO: flush data cache
diff --git a/backends/platform/ds/arm9/source/dsloader.h b/backends/platform/ds/arm9/source/dsloader.h
index f8a3cdefa4..ddb85900e8 100644
--- a/backends/platform/ds/arm9/source/dsloader.h
+++ b/backends/platform/ds/arm9/source/dsloader.h
@@ -44,17 +44,17 @@ class DLObject {
void seterror(const char *fmt, ...);
void unload();
- bool relocate(int fd, unsigned long offset, unsigned long size, void *relSegment);
- bool load(int fd);
+ bool relocate(Common::SeekableReadStream* DLFile, unsigned long offset, unsigned long size, void *relSegment);
+ bool load(Common::SeekableReadStream* DLFile);
- 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);
+ bool readElfHeader(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr);
+ bool readProgramHeaders(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Phdr *phdr, int num);
+ bool loadSegment(Common::SeekableReadStream* DLFile, Elf32_Phdr *phdr);
+ Elf32_Shdr *loadSectionHeaders(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr);
+ int loadSymbolTable(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr);
+ bool loadStringTable(Common::SeekableReadStream* DLFile, Elf32_Shdr *shdr);
void relocateSymbols(Elf32_Addr offset);
- bool relocateRels(int fd, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr);
+ bool relocateRels(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr);
public:
bool open(const char *path);
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