Fix M68k support (#749)

Author: knickish

src/read/elf/relocation.rs

@@ -350,9 +350,12 @@ fn parse_relocation<Elf: FileHeader>(
             elf::R_68K_PC32 => (K::Relative, g, 32),
             elf::R_68K_PC16 => (K::Relative, g, 16),
             elf::R_68K_PC8 => (K::Relative, g, 8),
-            elf::R_68K_GOT32 => (K::Got, g, 32),
-            elf::R_68K_GOT16 => (K::Got, g, 16),
-            elf::R_68K_GOT8 => (K::Got, g, 8),
+            elf::R_68K_GOT32O => (K::Got, g, 32),
+            elf::R_68K_GOT16O => (K::Got, g, 16),
+            elf::R_68K_GOT8O => (K::Got, g, 8),
+            elf::R_68K_GOT32 => (K::GotRelative, g, 32),
+            elf::R_68K_GOT16 => (K::GotRelative, g, 16),
+            elf::R_68K_GOT8 => (K::GotRelative, g, 8),
             elf::R_68K_PLT32 => (K::PltRelative, g, 32),
             elf::R_68K_PLT16 => (K::PltRelative, g, 16),
             elf::R_68K_PLT8 => (K::PltRelative, g, 8),

src/write/elf/object.rs

@@ -135,7 +135,7 @@ impl<'a> Object<'a> {
             Architecture::X86_64_X32 => true,
             Architecture::Hexagon => true,
             Architecture::LoongArch64 => true,
-            Architecture::M68k => false,
+            Architecture::M68k => true,
             Architecture::Mips => false,
             Architecture::Mips64 => true,
             Architecture::Mips64_N32 => true,
@@ -265,18 +265,21 @@ impl<'a> Object<'a> {
                 _ => return unsupported_reloc(),
             },
             Architecture::M68k => match (kind, encoding, size) {
-                (RelocationKind::Absolute, _, 8) => elf::R_68K_8,
-                (RelocationKind::Absolute, _, 16) => elf::R_68K_16,
-                (RelocationKind::Absolute, _, 32) => elf::R_68K_32,
-                (RelocationKind::Relative, _, 8) => elf::R_68K_PC8,
-                (RelocationKind::Relative, _, 16) => elf::R_68K_PC16,
-                (RelocationKind::Relative, _, 32) => elf::R_68K_PC32,
-                (RelocationKind::Got, _, 8) => elf::R_68K_GOT8,
-                (RelocationKind::Got, _, 16) => elf::R_68K_GOT16,
-                (RelocationKind::Got, _, 32) => elf::R_68K_GOT32,
-                (RelocationKind::PltRelative, _, 8) => elf::R_68K_PLT8,
-                (RelocationKind::PltRelative, _, 16) => elf::R_68K_PLT16,
-                (RelocationKind::PltRelative, _, 32) => elf::R_68K_PLT32,
+                (K::Absolute, _, 8) => elf::R_68K_8,
+                (K::Absolute, _, 16) => elf::R_68K_16,
+                (K::Absolute, _, 32) => elf::R_68K_32,
+                (K::Relative, _, 8) => elf::R_68K_PC8,
+                (K::Relative, _, 16) => elf::R_68K_PC16,
+                (K::Relative, _, 32) => elf::R_68K_PC32,
+                (K::GotRelative, _, 8) => elf::R_68K_GOT8,
+                (K::GotRelative, _, 16) => elf::R_68K_GOT16,
+                (K::GotRelative, _, 32) => elf::R_68K_GOT32,
+                (K::Got, _, 8) => elf::R_68K_GOT8O,
+                (K::Got, _, 16) => elf::R_68K_GOT16O,
+                (K::Got, _, 32) => elf::R_68K_GOT32O,
+                (K::PltRelative, _, 8) => elf::R_68K_PLT8,
+                (K::PltRelative, _, 16) => elf::R_68K_PLT16,
+                (K::PltRelative, _, 32) => elf::R_68K_PLT32,
                 _ => return unsupported_reloc(),
             },
             Architecture::Mips | Architecture::Mips64 | Architecture::Mips64_N32 => {