67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
#include "reios.h"
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extern "C" {
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#include <elf/elf.h>
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}
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#include "hw/sh4/sh4_mem.h"
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bool reios_loadElf(const std::string& elf) {
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FILE* f = nowide::fopen(elf.c_str(), "rb");
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if (!f)
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return false;
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std::fseek(f, 0, SEEK_END);
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size_t size = std::ftell(f);
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if (size == 0 || size > 16_MB) {
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std::fclose(f);
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return false;
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}
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void* elfF = malloc(size);
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std::fseek(f, 0, SEEK_SET);
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size_t nread = std::fread(elfF, 1, size, f);
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std::fclose(f);
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elf_t elfFile;
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if (nread != size || elf_newFile(elfF, nread, &elfFile) != 0)
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{
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free(elfF);
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return false;
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}
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bool phys = false;
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for (size_t i = 0; i < elf_getNumProgramHeaders(&elfFile); i++)
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{
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uint32_t type = elf_getProgramHeaderType(&elfFile, i);
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if (type != PT_LOAD) {
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DEBUG_LOG(REIOS, "Ignoring section %d type %d", (int)i, type);
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continue;
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}
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// Load that section
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uint64_t dest;
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if (phys)
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dest = elf_getProgramHeaderPaddr(&elfFile, i);
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else
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dest = elf_getProgramHeaderVaddr(&elfFile, i);
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size_t len = elf_getProgramHeaderFileSize(&elfFile, i);
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void *src = (u8 *)(elfFile.elfFile) + elf_getProgramHeaderOffset(&elfFile, i);
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u8* ptr = GetMemPtr(dest, len);
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if (ptr == NULL)
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{
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WARN_LOG(REIOS, "Invalid load address for section %d: %08lx", (int)i, (long)dest);
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continue;
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}
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DEBUG_LOG(REIOS, "Loading section %d to %08lx - %08lx", (int)i, (long)dest, (long)(dest + len - 1));
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memcpy(ptr, src, len);
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ptr += len;
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memset(ptr, 0, elf_getProgramHeaderMemorySize(&elfFile, i) - len);
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}
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free(elfF);
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return true;
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}
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