Update kernel

ExecutionLayer/Elf/ParseFunctions/ELFGetSections.cpp

@@ -0,0 +1,58 @@
+/*
+   This file is part of Fennix Kernel.
+
+   Fennix Kernel 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 3 of
+   the License, or (at your option) any later version.
+
+   Fennix Kernel 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <exec.hpp>
+
+#include "../../../kernel.h"
+
+namespace Execute
+{
+	std::vector<Elf64_Shdr> ELFGetSections_x86_64(int fd,
+												  const char *SectionName)
+	{
+#if defined(a64) || defined(aa64)
+		off_t OldOffset = lseek(fd, 0, SEEK_CUR);
+		std::vector<Elf64_Shdr> Ret;
+
+		Elf64_Ehdr ELFHeader;
+		lseek(fd, 0, SEEK_SET);
+		fread(fd, (uint8_t *)&ELFHeader, sizeof(Elf64_Ehdr));
+
+		Elf64_Shdr *SectionHeaders = new Elf64_Shdr[ELFHeader.e_shnum];
+		lseek(fd, ELFHeader.e_shoff, SEEK_SET);
+		fread(fd, (uint8_t *)SectionHeaders, sizeof(Elf64_Shdr) * ELFHeader.e_shnum);
+
+		char *SectionNames = new char[SectionHeaders[ELFHeader.e_shstrndx].sh_size];
+		lseek(fd, SectionHeaders[ELFHeader.e_shstrndx].sh_offset, SEEK_SET);
+		fread(fd, (uint8_t *)SectionNames, SectionHeaders[ELFHeader.e_shstrndx].sh_size);
+
+		for (Elf64_Half i = 0; i < ELFHeader.e_shnum; ++i)
+		{
+			const char *Name = SectionNames + SectionHeaders[i].sh_name;
+			if (strcmp(Name, SectionName) == 0)
+				Ret.push_back(SectionHeaders[i]);
+		}
+
+		lseek(fd, OldOffset, SEEK_SET);
+		delete[] SectionHeaders;
+		delete[] SectionNames;
+		return Ret;
+#elif defined(a32)
+		return {};
+#endif
+	}
+}