[TNSLC] elf header definitions

1 files changed, 151 insertions, 0 deletions

diff --git a/tnslc/src/compile/format/elf.tnsl b/tnslc/src/compile/format/elf.tnsl
index e69de29..8490180 100644
--- a/tnslc/src/compile/format/elf.tnsl
+++ b/tnslc/src/compile/format/elf.tnsl
@@ -0,0 +1,151 @@
+/##
+	Copyright 2021 Kyle Gunger
+
+	This file is licensed under the CDDL 1.0 (the License)
+	and may only be used in accordance with the License.
+	You should have received a copy of the License with this
+	software/source code. If you did not, a copy can be found
+	at the following URL:
+
+	https://opensource.org/licenses/CDDL-1.0
+
+	THIS SOFTWARE/SOURCE CODE IS PROVIDED "AS IS" WITH NO
+	WARRANTY, GUARANTEE, OR CLAIM OF FITNESS FOR ANY PURPOSE
+	EXPRESS OR IMPLIED
+#/
+
+# Constants and values used in ELF files
+
+# File signature
+;const {4}uint8 SIGNATURE_ELF = {0x7F, 'E', 'L', 'F'}
+
+# ELF version always 1
+;const uint8 VERSION_ELF = 1
+
+# OS identifiers (from wikipedia)
+;enum ABI_ELF [uint8] {
+	SystemV		= 0x0,
+	HP_UX		= 0x1,
+	NetBSD		= 0x2,
+	Linux		= 0x3,
+	GNUHurd		= 0x4,
+	Solaris		= 0x6,
+	AIX			= 0x7,
+	IRIX		= 0x8,
+	FreeBSD		= 0x9,
+	Tru64		= 0xA,
+	OpenBSD		= 0xC,
+	OpenVMS		= 0xD
+}
+
+# ELF file types (from wikipedia)
+;enum TYPE_ELF [uint16] {
+	ET_NONE		= 0x0,
+	ET_REL		= 0x1,
+	ET_EXEC		= 0x2,
+	ET_DYN		= 0x3,
+	ET_CORE		= 0x4,
+	ET_LOOS		= 0xFE00,
+	ET_HIOS		= 0xFEFF,
+	ET_LOPROC	= 0xFF00,
+	ET_HIPROC	= 0xFFFF
+}
+
+# ISA (from wikipedia)
+;enum ARCH_ELF [uint16] {
+	NONE		= 0x0,
+	SPARC		= 0x2,
+	x86_32		= 0x3,
+	MIPS		= 0x8,
+	PowerPC		= 0x14,
+	PowerPC64	= 0x15,
+	ARM			= 0x28,
+	SPARC9		= 0x2B,
+	IA_64		= 0x32,
+	x86_64		= 0x3E,
+	ARM64		= 0xB7,
+	RISC_V		= 0xF3
+}
+
+# Some zeros to fill out the pad in the header
+;const {7}uint8 PAD_ZEROS_ELF = {0, 0, 0, 0, 0, 0, 0}
+
+
+
+# Internal file structures
+
+# Identity inside header
+;raw struct IdentityELF {
+	{4}uint8
+		signature,
+	
+	uint8
+		class,
+		data,
+		version,
+		abi,
+
+		# Usually zero
+		abiVersion,
+	
+	{7}uint8
+		# Filled with zeros, use PAD_ZEROS_ELF to fill out
+		pad
+}
+
+# Main header (32 bit)
+;raw struct HeaderELF32 {
+	IdentityELF
+		identity,
+	
+	uint16
+		fileType,
+		arch,
+
+	{4}uint8
+		version,
+		entry,
+		programHeader,
+		sectionHeader,
+	
+	{4}uint8
+		flags,
+	
+	uint16
+		headerSize,
+		programHeaderSize,
+		programHeaderEntries,
+		sectionHeaderSize,
+		sectionHeaderEntries,
+		shNameIndex
+}
+
+# Main header (64 bit)
+;raw struct HeaderELF64 {
+	IdentityELF
+		identity,
+	
+	uint16
+		fileType,
+		arch,
+
+	{4}uint8
+		version,
+	
+	{8}uint8
+		entry,
+		programHeader,
+		sectionHeader,
+	
+	{4}uint8
+		flags,
+	
+	uint16
+		headerSize,
+		programHeaderSize,
+		programHeaderEntries,
+		sectionHeaderSize,
+		sectionHeaderEntries,
+		shNameIndex
+}
+