mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-25 11:55:28 +01:00
172 lines
7.5 KiB
C++
Executable File
172 lines
7.5 KiB
C++
Executable File
//===-- crtbegin.c - Start of constructors and destructors ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#if 0
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#define DBG(...) DebugLog(2, __VA_ARGS__)
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#else
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#define DBG(...)
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#endif
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extern "C" {
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// #include <stddef.h>
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}
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#include "globals_ctor.h"
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#include <Platform.h> // Only use angled for Platform, else, xcode project won't compile
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#include <Protocol/LoadedImage.h>
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//#define DUMP_EFI_FROM_MEMORY
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#ifdef DUMP_EFI_FROM_MEMORY
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#include "../../libeg/libeg.h"
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#include "../../Settings/Self.h"
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#endif
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typedef void (ctor)(void);
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typedef ctor* ctor_ptr;
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#if defined(__clang__)
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void construct_globals_objects(EFI_HANDLE ImageHandle)
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{
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EFI_LOADED_IMAGE* LoadedImage;
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EFI_STATUS Status = gBS->HandleProtocol(gImageHandle, &gEfiLoadedImageProtocolGuid, (void **) &LoadedImage);
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if ( EFI_ERROR(Status) ) {
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panic("construct_globals_objects: Cannot get LoadedImage protocol");
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}
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UINT32 PeCoffHeaderOffset = 0;
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EFI_IMAGE_DOS_HEADER* DosHdr = (EFI_IMAGE_DOS_HEADER*)LoadedImage->ImageBase;
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if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
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// DOS image header is present, so read the PE header after the DOS image header
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PeCoffHeaderOffset = DosHdr->e_lfanew;
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}
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DBG("ImageContext.PeCoffHeaderOffset: %08X %d\n", PeCoffHeaderOffset, PeCoffHeaderOffset);
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EFI_IMAGE_OPTIONAL_HEADER_UNION* ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *) ((UINTN) (LoadedImage->ImageBase) + PeCoffHeaderOffset);
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EFI_IMAGE_SECTION_HEADER* SectionHeader = (EFI_IMAGE_SECTION_HEADER *) ((UINTN) ImgHdr + sizeof(UINT32) + sizeof(EFI_IMAGE_FILE_HEADER) + ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader);
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for (int Index = 0; Index < ImgHdr->Pe32.FileHeader.NumberOfSections; Index++, SectionHeader++)
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{
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DBG("SectionHeader->Name=%s\n", SectionHeader->Name);
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// DBG("SectionHeader->PointerToRawData=%8X\n", SectionHeader->PointerToRawData);
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// DBG("SectionHeader->SizeOfRawData=%8X\n", SectionHeader->SizeOfRawData);
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DBG("SectionHeader->VirtualSize=%8X\n", SectionHeader->Misc.VirtualSize);
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if (strcmp((CONST CHAR8*) SectionHeader->Name, ".ctorss") == 0)
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{
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ctor_ptr* currentCtor = (ctor_ptr*) (((UINTN) (LoadedImage->ImageBase)) + SectionHeader->PointerToRawData);
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ctor_ptr* ctorEnd = (ctor_ptr*) (((UINTN) (LoadedImage->ImageBase)) + SectionHeader->PointerToRawData + SectionHeader->Misc.VirtualSize);
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DBG("currentBegin %llX, ctorEnd %llX, %lld ctors to call\n", (UINTN)(currentCtor), (UINTN)(ctorEnd), (UINTN)(ctorEnd-currentCtor));
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size_t i = 0; (void)i; // avoid warning if DBG is an empty macro
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while (currentCtor < ctorEnd)
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{
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DBG("[%03zu] &ctor %08llX, will call %08llX\n", i, (UINTN)(currentCtor), (UINTN)(*currentCtor));
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if (*currentCtor != NULL) (*currentCtor)();
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currentCtor++;
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i++;
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}
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}
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}
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}
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#elif defined(__GNUC__)
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__attribute__((visibility("hidden"))) void *__dso_handle = &__dso_handle;
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extern int __beginning_of_section_ctors, __end_of_section_ctors;
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ctor_ptr* p = (ctor_ptr*)&__beginning_of_section_ctors;
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ctor_ptr* pend = (ctor_ptr*)&__end_of_section_ctors;
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void construct_globals_objects(EFI_HANDLE ImageHandle)
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{
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(void)ImageHandle;
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#ifdef DUMP_EFI_FROM_MEMORY
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EFI_LOADED_IMAGE* LoadedImage;
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EFI_STATUS Status = gBS->HandleProtocol(gImageHandle, &gEfiLoadedImageProtocolGuid, (void **) &LoadedImage);
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if ( EFI_ERROR(Status) ) {
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panic("construct_globals_objects: Cannot get LoadedImage protocol");
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}
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Self self;
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self.initialize(ImageHandle);
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// for (size_t i=0 ; i<2467264 ; i +=16) DBG("%08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx %08llx\n", (UINTN)p[i], (UINTN)p[i+1], (UINTN)p[i+2], (UINTN)p[i+3], (UINTN)p[i+4], (UINTN)p[i+5], (UINTN)p[i+6], (UINTN)p[i+7], (UINTN)p[i+8], (UINTN)p[i+9], (UINTN)p[i+10], (UINTN)p[i+11], (UINTN)p[i+12], (UINTN)p[i+13], (UINTN)p[i+14], (UINTN)p[i+15]);
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// unsigned char* cp = (unsigned char*)p;
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// for (size_t i=0 ; i<2467264 ; i +=16) DBG("%c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c\n",cp[0]>=32 ? cp[i+0] : '.',cp[i+1]>=32 ? cp[i+1] : '.',cp[i+2]>=32 ? cp[i+2] : '.',cp[i+3]>=32 ? cp[i+3] : '.',cp[i+4]>=32 ? cp[i+4] : '.',cp[i+5]>=32 ? cp[i+5] : '.',cp[i+6]>=32 ? cp[i+6] : '.',cp[i+7]>=32 ? cp[i+7] : '.',cp[i+8]>=32 ? cp[i+8] : '.',cp[i+9]>=32 ? cp[i+9] : '.',cp[i+10]>=32 ? cp[i+10] : '.',cp[i+11]>=32 ? cp[i+11] : '.',cp[i+12]>=32 ? cp[i+12] : '.',cp[i+13]>=32 ? cp[i+13] : '.',cp[i+14]>=32 ? cp[i+14] : '.',cp[i+15]>=32 ? cp[i+15] : '.');
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// egSaveFile(&self.getCloverDir(), L"dump.bin", LoadedImage->ImageBase, 3000000);
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#endif
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DBG("CTORS %llX(%lld), offset from file beginning %llX(%lld) size %ld\n", (UINTN)p, (UINTN)p, (UINTN)p - (UINTN)LoadedImage->ImageBase, (UINTN)p - (UINTN)LoadedImage->ImageBase, pend-p );
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while ( p < pend ) {
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DBG("CTOR %llX(%lld)\n", (UINTN)p[0], (UINTN)p[0]);
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(*p)();
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p++;
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}
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// DBG("CTOR %X %d\n", (UINTN)__CTOR_LIST__, (UINTN)__CTOR_LIST__);
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// __do_init();
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// const size_t n = __CTOR_LIST_END__ - __CTOR_LIST__ - 1;
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// size_t n = 10;
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// for (size_t i = 0; i < n; i++) {
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// DBG("CTOR %X %d\n", (UINTN)__CTOR_LIST__[i], (UINTN)__CTOR_LIST__[i]);
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// }
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// __CTOR_LIST__[0]();
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}
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#elif defined(_MSC_VER)
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void construct_globals_objects(EFI_HANDLE ImageHandle)
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{
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DBG("Work in progress\n");
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EFI_LOADED_IMAGE* LoadedImage;
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EFI_STATUS Status = gBS->HandleProtocol(gImageHandle, &gEfiLoadedImageProtocolGuid, (void **)&LoadedImage);
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if (EFI_ERROR(Status)) {
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panic("construct_globals_objects: Cannot get LoadedImage protocol");
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}
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UINT32 PeCoffHeaderOffset = 0;
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EFI_IMAGE_DOS_HEADER* DosHdr = (EFI_IMAGE_DOS_HEADER*)LoadedImage->ImageBase;
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if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
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// DOS image header is present, so read the PE header after the DOS image header
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PeCoffHeaderOffset = DosHdr->e_lfanew;
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}
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DBG("ImageContext.PeCoffHeaderOffset: %08X %d\n", PeCoffHeaderOffset, PeCoffHeaderOffset);
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EFI_IMAGE_OPTIONAL_HEADER_UNION* ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *) ((UINTN) (LoadedImage->ImageBase) + PeCoffHeaderOffset);
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EFI_IMAGE_SECTION_HEADER* SectionHeader = (EFI_IMAGE_SECTION_HEADER *) ((UINTN) ImgHdr + sizeof(UINT32) + sizeof(EFI_IMAGE_FILE_HEADER) + ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader);
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for (int Index = 0; Index < ImgHdr->Pe32.FileHeader.NumberOfSections; Index++, SectionHeader++)
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{
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DBG("SectionHeader->Name=%s\n", SectionHeader->Name);
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// DBG("SectionHeader->PointerToRawData=%8X\n", SectionHeader->PointerToRawData);
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// DBG("SectionHeader->SizeOfRawData=%8X\n", SectionHeader->SizeOfRawData);
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DBG("SectionHeader->VirtualSize=%8X\n", SectionHeader->Misc.VirtualSize);
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if (strcmp((CONST CHAR8*) SectionHeader->Name, ".CRT") == 0)
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{
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ctor_ptr* currentCtor = (ctor_ptr*) (((UINTN) (LoadedImage->ImageBase)) + SectionHeader->PointerToRawData);
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ctor_ptr* ctorend = (ctor_ptr*) (((UINTN) (LoadedImage->ImageBase)) + SectionHeader->PointerToRawData + SectionHeader->Misc.VirtualSize);
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while (currentCtor < ctorend)
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{
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DBG("¤tCtor %X %d\n", (UINTN) (currentCtor), (UINTN) (currentCtor));
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DBG("currentCtor %X %d\n", (UINTN) (*currentCtor), (UINTN) (*currentCtor));
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if (*currentCtor != NULL) (*currentCtor)();
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currentCtor++;
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}
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}
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}
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}
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#endif
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