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[makerom] Fixed ELF related code. Addresses #14

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jakcron
2015-12-17 16:20:03 +08:00
parent 4d9f77b399
commit 83d4a1fcf3
5 changed files with 170 additions and 396 deletions
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makerom/code.c
+81 -163
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@@ -5,32 +5,33 @@
#include "exheader_read.h"
#include "code.h"
const char *SDK_PLAINREGION_SEGMENT_NAME = ".module_id";
const u32 CTR_PAGE_SIZE = 0x1000;
const u32 DEFAULT_STACK_SIZE = 0x4000; // 10KB
typedef struct code_segment
{
u32 address;
u32 memSize;
u32 pageNum;
u32 size;
u32 maxPageNum;
u8 *data;
} code_segment;
u32 GetPageSize(ncch_settings *set)
u32 SizeToPage(u32 memorySize)
{
if (set->rsfSet->Option.PageSize)
return strtoul(set->rsfSet->Option.PageSize, NULL, 10);
return 0x1000;
return align(memorySize, CTR_PAGE_SIZE) / CTR_PAGE_SIZE;
}
u32 SizeToPage(u32 memorySize, elf_context *elf)
u32 PageToSize(u32 pageNum)
{
return align(memorySize, elf->pageSize) / elf->pageSize;
return pageNum * CTR_PAGE_SIZE;
}
int ImportPlainRegionFromFile(ncch_settings *set)
{
set->sections.plainRegion.size = align(set->componentFilePtrs.plainregionSize, set->options.blockSize);
set->sections.plainRegion.buffer = malloc(set->sections.plainRegion.size);
set->sections.plainRegion.buffer = calloc(set->sections.plainRegion.size, 1);
if (!set->sections.plainRegion.buffer) { fprintf(stderr, "[ELF ERROR] Not enough memory\n"); return MEM_ERROR; }
ReadFile64(set->sections.plainRegion.buffer, set->componentFilePtrs.plainregionSize, 0, set->componentFilePtrs.plainregion);
return 0;
@@ -99,117 +100,61 @@ int ImportExeFsCodeBinaryFromFile(ncch_settings *set)
return 0;
}
int GetBSSFromElf(elf_context *elf, ncch_settings *set)
int ImportPlainRegionFromElf(elf_context *elf, ncch_settings *set)
{
set->codeDetails.bssSize = 0;
elf_segment segment = elf_GetSegments(elf)[elf_SegmentNum(elf) - 1];
for (int i = 0; i < elf->sectionTableEntryCount; i++) {
if (IsBss(&elf->sections[i]))
set->codeDetails.bssSize = elf->sections[i].size;
/* Check last segment
If the last segment is RO segment, this must be an SDK .module_id segment */
if (segment.flags != PF_RODATA) {
/* not a RO segment */
return 0;
}
return 0;
}
int ImportPlainRegionFromElf(elf_context *elf, ncch_settings *set) // Doesn't work same as N makerom
{
u64 size = 0;
u64 offset = 0;
for (u16 i = 0; i < elf->activeSegments; i++) {
if (strcmp(elf->segments[i].name, SDK_PLAINREGION_SEGMENT_NAME) == 0) {
size = elf->segments[i].header->sizeInFile;
offset = elf->segments[i].header->offsetInFile;
break;
}
}
if (size > 0) {
if (segment.fileSize > 0) {
/* Creating Output Buffer */
set->sections.plainRegion.size = align(size, set->options.blockSize);
set->sections.plainRegion.buffer = malloc(set->sections.plainRegion.size);
if (!set->sections.plainRegion.buffer) { fprintf(stderr, "[ELF ERROR] Not enough memory\n"); return MEM_ERROR; }
memset(set->sections.plainRegion.buffer, 0, set->sections.plainRegion.size);
set->sections.plainRegion.size = align(segment.fileSize, set->options.blockSize);
set->sections.plainRegion.buffer = calloc(set->sections.plainRegion.size, 1);
if (!set->sections.plainRegion.buffer) { fprintf(stderr, "[CODE ERROR] Not enough memory\n"); return MEM_ERROR; }
/* Copy Plain Region */
memcpy(set->sections.plainRegion.buffer, elf->file + offset, size);
memcpy(set->sections.plainRegion.buffer, segment.ptr, segment.fileSize);
}
return 0;
}
int CreateCodeSegmentFromElf(code_segment *out, elf_context *elf, u64 segment_flags)
{
memset(out, 0, sizeof(code_segment));
u32 segmentNum = elf_SegmentNum(elf);
const elf_segment *segments = elf_GetSegments(elf);
u16 seg_num = 0;
elf_segment **seg = calloc(elf->activeSegments, sizeof(elf_segment*));
for (u16 i = 0; i < elf->activeSegments; i++) {
// Skip SDK ELF plain region
if (strcmp(elf->segments[i].name, SDK_PLAINREGION_SEGMENT_NAME) == 0)
/* Find segment */
for (u16 i = 0; i < segmentNum; i++) {
/* Skip SDK ELF plain region
The last segment should always be data in valid ELFs,
unless this is an SDK ELF with .module_id segment */
if (i == segmentNum-1 && segments[i].flags == PF_RODATA)
continue;
//printf("SegName: %s (flags: %x)\n", elf->segments[i].name, elf->segments[i].header->flags);
if ((elf->segments[i].header->flags & ~PF_CTRSDK) == segment_flags) {
if (seg_num == 0) {
seg[seg_num] = &elf->segments[i];
seg_num++;
}
else if (elf->segments[i].vAddr == (u32)align(seg[seg_num - 1]->vAddr, seg[seg_num - 1]->header->alignment)) {
seg[seg_num] = &elf->segments[i];
seg_num++;
}
/* Found segment */
if ((segments[i].flags & ~PF_CTRSDK) == segment_flags) {
out->address = segments[i].vAddr;
out->memSize = segments[i].memSize;
out->pageNum = SizeToPage(out->memSize);
out->size = segments[i].fileSize;
out->data = malloc(out->size);
if (!out->data) { fprintf(stderr, "[CODE ERROR] Not enough memory\n"); return MEM_ERROR; }
memcpy(out->data, segments[i].ptr, out->size);
return 0;
}
}
/* Return if there are no applicable segment */
if (seg_num == 0)
return 0;
/* Getting Segment Size/Settings */
u32 vAddr = 0;
u32 memorySize = 0;
for (u16 i = 0; i < seg_num; i++) {
if (i == 0) {
vAddr = seg[i]->vAddr;
}
else { // Add rounded size from previous segment
u32 padding = seg[i]->vAddr - (vAddr + memorySize);
memorySize += padding;
}
memorySize += seg[i]->header->sizeInMemory;
if (IsBss(&seg[i]->sections[seg[i]->sectionNum - 1]))
memorySize -= seg[i]->sections[seg[i]->sectionNum - 1].size;
}
// For Check
#ifdef DEBUG
printf("Address: 0x%x\n", vAddr);
printf("Size: 0x%x\n", memorySize);
#endif
out->address = vAddr;
out->size = memorySize;
out->maxPageNum = SizeToPage(memorySize, elf);
out->data = malloc(memorySize);
/* Writing Segment to Buffer */
for (int i = 0; i < seg_num; i++) {
for (int j = 0; j < seg[i]->sectionNum; j++) {
elf_section_entry *section = &seg[i]->sections[j];
if (!IsBss(section)) {
u8 *pos = (out->data + (section->address - seg[i]->vAddr));
memcpy(pos, section->ptr, section->size);
//size += section->size;
}
}
}
free(seg);
/* Stub struct data */
out->address = 0;
out->memSize = 0;
out->pageNum = 0;
out->size = 0;
out->data = NULL;
return 0;
}
@@ -217,37 +162,33 @@ int CreateExeFsCode(elf_context *elf, ncch_settings *set)
{
/* Getting Code Segments */
code_segment text;
memset(&text, 0, sizeof(code_segment));
code_segment rodata;
memset(&rodata, 0, sizeof(code_segment));
code_segment rwdata;
memset(&rwdata, 0, sizeof(code_segment));
int result = CreateCodeSegmentFromElf(&text, elf, PF_TEXT);
if (result) return result;
result = CreateCodeSegmentFromElf(&rodata, elf, PF_RODATA);
if (result) return result;
result = CreateCodeSegmentFromElf(&rwdata, elf, PF_DATA);
if (result) return result;
if (CreateCodeSegmentFromElf(&text, elf, PF_TEXT) == MEM_ERROR || CreateCodeSegmentFromElf(&rodata, elf, PF_RODATA) == MEM_ERROR || CreateCodeSegmentFromElf(&rwdata, elf, PF_DATA) == MEM_ERROR)
return MEM_ERROR;
/* Checking the existence of essential ELF Segments */
if (!text.size) return NOT_FIND_TEXT_SEGMENT;
if (!rwdata.size) return NOT_FIND_DATA_SEGMENT;
/* Calculateing BSS size */
set->codeDetails.bssSize = rwdata.memSize - rwdata.size;
/* Allocating Buffer for ExeFs Code */
u32 size = (text.maxPageNum + rodata.maxPageNum + rwdata.maxPageNum)*elf->pageSize;
u32 size = PageToSize(text.pageNum + rodata.pageNum + rwdata.pageNum);
u8 *code = calloc(1, size);
/* Writing Code into Buffer */
u8 *textPos = (code + 0);
u8 *rodataPos = (code + text.maxPageNum*elf->pageSize);
u8 *rwdataPos = (code + (text.maxPageNum + rodata.maxPageNum)*elf->pageSize);
u8 *textPos = (code + text.address - text.address);
u8 *rodataPos = (code + rodata.address - text.address);
u8 *rwdataPos = (code + rwdata.address - text.address);
if (text.size) memcpy(textPos, text.data, text.size);
if (rodata.size) memcpy(rodataPos, rodata.data, rodata.size);
if (rwdata.size) memcpy(rwdataPos, rwdata.data, rwdata.size);
/* Compressing If needed */
/* Compressing if needed */
if (set->options.CompressCode) {
if (set->options.verbose)
printf("[CODE] Compressing code... ");
@@ -265,31 +206,32 @@ int CreateExeFsCode(elf_context *elf, ncch_settings *set)
/* Setting code_segment data and freeing original buffers */
set->codeDetails.textAddress = text.address;
set->codeDetails.textMaxPages = text.maxPageNum;
set->codeDetails.textSize = text.size;
set->codeDetails.textMaxPages = text.pageNum;
set->codeDetails.textSize = text.memSize;
if (text.size) free(text.data);
set->codeDetails.roAddress = rodata.address;
set->codeDetails.roMaxPages = rodata.maxPageNum;
set->codeDetails.roSize = rodata.size;
set->codeDetails.roMaxPages = rodata.pageNum;
set->codeDetails.roSize = rodata.memSize;
if (rodata.size) free(rodata.data);
set->codeDetails.rwAddress = rwdata.address;
set->codeDetails.rwMaxPages = rwdata.maxPageNum;
set->codeDetails.rwSize = rwdata.size;
set->codeDetails.rwMaxPages = rwdata.pageNum;
set->codeDetails.rwSize = rwdata.memSize;
if (rwdata.size) free(rwdata.data);
if (set->rsfSet->SystemControlInfo.StackSize)
set->codeDetails.stackSize = strtoul(set->rsfSet->SystemControlInfo.StackSize, NULL, 0);
else {
fprintf(stderr, "[CODE ERROR] RSF Parameter Not Found: \"SystemControlInfo/StackSize\"\n");
return 1;
set->codeDetails.stackSize = DEFAULT_STACK_SIZE;
fprintf(stderr, "[CODE WARNING] \"SystemControlInfo/StackSize\" not specified, defaulting to 0x%x bytes\n", DEFAULT_STACK_SIZE);
}
/* Return */
return 0;
}
/*
void PrintElfContext(elf_context *elf)
{
printf("[ELF] Program Table Data\n");
@@ -303,27 +245,17 @@ void PrintElfContext(elf_context *elf)
printf(" Label index: 0x%x\n", elf->sectionHeaderNameEntryIndex);
for (int i = 0; i < elf->activeSegments; i++) {
printf(" Segment [%d][%s]\n", i, elf->segments[i].name);
printf(" > Size : 0x%x\n", elf->segments[i].header->sizeInFile);
printf(" > Address : 0x%x\n", elf->segments[i].vAddr);
printf(" > Flags: 0x%x\n", elf->segments[i].header->flags);
printf(" > Type: 0x%x\n", elf->segments[i].header->type);
printf(" > Sections : %d\n", elf->segments[i].sectionNum);
printf(" > Size(Memory): 0x%x\n", elf->segments[i].header->sizeInMemory);
printf(" > Size(File): 0x%x\n", elf->segments[i].header->sizeInFile);
printf(" > Address: 0x%x\n", elf->segments[i].vAddr);
printf(" > Flags: 0x%x\n", elf->segments[i].header->flags);
printf(" > Type: 0x%x\n", elf->segments[i].header->type);
printf(" > Sections: %d\n", elf->segments[i].sectionNum);
for (int j = 0; j < elf->segments[i].sectionNum; j++)
printf(" > Section [%d][%s][0x%x][0x%x]\n", j, elf->segments[i].sections[j].name, elf->segments[i].sections[j].flags, elf->segments[i].sections[j].type);
/*
char outpath[100];
memset(&outpath,0,100);
sprintf(outpath,"%s.bin",elf->sections[i].name);
chdir("elfsections");
FILE *tmp = fopen(outpath,"wb");
WriteBuffer(elf->sections[i].ptr,elf->sections[i].size,0,tmp);
fclose(tmp);
chdir("..");
*/
}
}
*/
int BuildExeFsCode(ncch_settings *set)
{
@@ -331,10 +263,11 @@ int BuildExeFsCode(ncch_settings *set)
if (set->options.IsCfa)
return result;
if (set->componentFilePtrs.plainregion) // Import PlainRegion from file
if ((result = ImportPlainRegionFromFile(set))) return result;
if (!set->options.IsBuildingCodeSection) // Import ExeFs Code from file and return
if (!set->options.IsBuildingCodeSection) { // Import ExeFs Code from file and return
if (set->componentFilePtrs.plainregion) // Import PlainRegion from file
if ((result = ImportPlainRegionFromFile(set))) return result;
return ImportExeFsCodeBinaryFromFile(set);
}
/* Import ELF */
u8 *elfFile = malloc(set->componentFilePtrs.elfSize);
@@ -345,26 +278,12 @@ int BuildExeFsCode(ncch_settings *set)
ReadFile64(elfFile, set->componentFilePtrs.elfSize, 0, set->componentFilePtrs.elf);
/* Create ELF Context */
elf_context *elf = calloc(1, sizeof(elf_context));
if (!elf) {
fprintf(stderr, "[CODE ERROR] Not enough memory\n");
free(elfFile);
return MEM_ERROR;
}
elf_context elf;
if ((result = GetElfContext(elf, elfFile))) goto finish;
if ((result = elf_Init(&elf, elfFile))) goto finish;
/* Setting Page Size */
elf->pageSize = GetPageSize(set);
if (!set->componentFilePtrs.plainregion)
if ((result = ImportPlainRegionFromElf(elf, set))) goto finish;
if (set->options.verbose)
PrintElfContext(elf);
if ((result = CreateExeFsCode(elf, set))) goto finish;
if ((result = GetBSSFromElf(elf, set))) goto finish;
if ((result = ImportPlainRegionFromElf(&elf, set))) goto finish;
if ((result = CreateExeFsCode(&elf, set))) goto finish;
finish:
switch (result) {
@@ -389,8 +308,7 @@ finish:
fprintf(stderr, "[CODE ERROR] Failed to process ELF file (%d)\n", result);
}
FreeElfContext(elf);
elf_Free(&elf);
free(elfFile);
free(elf);
return result;
}