kit

commit 78a82037e8216feafcc01711a22b21322ac64164
parent f86498e87167a077fa87b390ad814e52e43b4f21
Author: Ryan Sepassi <rsepassi@gmail.com>
Date:   Sun, 10 May 2026 11:31:01 -0700

obj: ELF x64 — TLS and GOT-relax reloc coverage

Adds the x86_64 reloc kinds clang emits at -O0 for TLS local-exec and
modern GOT-load relaxation (TPOFF32/64, GOTTPOFF, DTPOFF32/MOD64,
TLSGD/TLSLD, GOTPCRELX, REX_GOTPCRELX, GOTPC32, GOTOFF64), plus the
matching RelocKind enum values and objdump labels.

CFREE_TEST_ARCH=x64 test/elf now passes 36/36 (was 34/2 with 06_tls
and 14_got_pic failing on TPOFF32 / REX_GOTPCRELX).

Diffstat:
M
src/api/pipeline.c
 | 
24
++++++++++++++++++++++++
M
src/obj/elf.h
 | 
12
++++++++++++
M
src/obj/elf_reloc_x86_64.c
 | 
48
++++++++++++++++++++++++++++++++++++++++++++++++
M
src/obj/obj.h
 | 
12
++++++++++++

4 files changed, 96 insertions(+), 0 deletions(-)
diff --git a/src/api/pipeline.c b/src/api/pipeline.c
@@ -1046,6 +1046,30 @@ static const char* reloc_kind_name(u16 kind) {
       return "R_X86_64_PLT32";
     case R_X64_GOTPCREL:
       return "R_X86_64_GOTPCREL";
+    case R_X64_GOTPCRELX:
+      return "R_X86_64_GOTPCRELX";
+    case R_X64_REX_GOTPCRELX:
+      return "R_X86_64_REX_GOTPCRELX";
+    case R_X64_GOTPC32:
+      return "R_X86_64_GOTPC32";
+    case R_X64_GOTOFF64:
+      return "R_X86_64_GOTOFF64";
+    case R_X64_TPOFF32:
+      return "R_X86_64_TPOFF32";
+    case R_X64_TPOFF64:
+      return "R_X86_64_TPOFF64";
+    case R_X64_DTPOFF32:
+      return "R_X86_64_DTPOFF32";
+    case R_X64_DTPMOD64:
+      return "R_X86_64_DTPMOD64";
+    case R_X64_DTPOFF64:
+      return "R_X86_64_DTPOFF64";
+    case R_X64_TLSGD:
+      return "R_X86_64_TLSGD";
+    case R_X64_TLSLD:
+      return "R_X86_64_TLSLD";
+    case R_X64_GOTTPOFF:
+      return "R_X86_64_GOTTPOFF";
     case R_X64_GLOB_DAT:
       return "R_X86_64_GLOB_DAT";
     case R_X64_JUMP_SLOT:
diff --git a/src/obj/elf.h b/src/obj/elf.h
@@ -269,7 +269,19 @@ u32 elf_aarch64_reloc_from(u32 elf_type);
 #define ELF_R_X86_64_PC16 13
 #define ELF_R_X86_64_8 14
 #define ELF_R_X86_64_PC8 15
+#define ELF_R_X86_64_DTPMOD64 16
+#define ELF_R_X86_64_DTPOFF64 17
+#define ELF_R_X86_64_TPOFF64 18
+#define ELF_R_X86_64_TLSGD 19
+#define ELF_R_X86_64_TLSLD 20
+#define ELF_R_X86_64_DTPOFF32 21
+#define ELF_R_X86_64_GOTTPOFF 22
+#define ELF_R_X86_64_TPOFF32 23
 #define ELF_R_X86_64_PC64 24
+#define ELF_R_X86_64_GOTOFF64 25
+#define ELF_R_X86_64_GOTPC32 26
+#define ELF_R_X86_64_GOTPCRELX 41
+#define ELF_R_X86_64_REX_GOTPCRELX 42
 
 u32 elf_x86_64_reloc_to(u32 kind /* RelocKind */);
 u32 elf_x86_64_reloc_from(u32 elf_type);
diff --git a/src/obj/elf_reloc_x86_64.c b/src/obj/elf_reloc_x86_64.c
@@ -35,6 +35,30 @@ u32 elf_x86_64_reloc_to(u32 kind /* RelocKind */) {
       return ELF_R_X86_64_GOT32;
     case R_X64_GOTPCREL:
       return ELF_R_X86_64_GOTPCREL;
+    case R_X64_GOTPCRELX:
+      return ELF_R_X86_64_GOTPCRELX;
+    case R_X64_REX_GOTPCRELX:
+      return ELF_R_X86_64_REX_GOTPCRELX;
+    case R_X64_GOTPC32:
+      return ELF_R_X86_64_GOTPC32;
+    case R_X64_GOTOFF64:
+      return ELF_R_X86_64_GOTOFF64;
+    case R_X64_TPOFF32:
+      return ELF_R_X86_64_TPOFF32;
+    case R_X64_TPOFF64:
+      return ELF_R_X86_64_TPOFF64;
+    case R_X64_DTPOFF32:
+      return ELF_R_X86_64_DTPOFF32;
+    case R_X64_DTPMOD64:
+      return ELF_R_X86_64_DTPMOD64;
+    case R_X64_DTPOFF64:
+      return ELF_R_X86_64_DTPOFF64;
+    case R_X64_TLSGD:
+      return ELF_R_X86_64_TLSGD;
+    case R_X64_TLSLD:
+      return ELF_R_X86_64_TLSLD;
+    case R_X64_GOTTPOFF:
+      return ELF_R_X86_64_GOTTPOFF;
     case R_X64_GLOB_DAT:
       return ELF_R_X86_64_GLOB_DAT;
     case R_X64_JUMP_SLOT:
@@ -70,6 +94,30 @@ u32 elf_x86_64_reloc_from(u32 elf_type) {
       return R_GOT32;
     case ELF_R_X86_64_GOTPCREL:
       return R_X64_GOTPCREL;
+    case ELF_R_X86_64_GOTPCRELX:
+      return R_X64_GOTPCRELX;
+    case ELF_R_X86_64_REX_GOTPCRELX:
+      return R_X64_REX_GOTPCRELX;
+    case ELF_R_X86_64_GOTPC32:
+      return R_X64_GOTPC32;
+    case ELF_R_X86_64_GOTOFF64:
+      return R_X64_GOTOFF64;
+    case ELF_R_X86_64_TPOFF32:
+      return R_X64_TPOFF32;
+    case ELF_R_X86_64_TPOFF64:
+      return R_X64_TPOFF64;
+    case ELF_R_X86_64_DTPOFF32:
+      return R_X64_DTPOFF32;
+    case ELF_R_X86_64_DTPMOD64:
+      return R_X64_DTPMOD64;
+    case ELF_R_X86_64_DTPOFF64:
+      return R_X64_DTPOFF64;
+    case ELF_R_X86_64_TLSGD:
+      return R_X64_TLSGD;
+    case ELF_R_X86_64_TLSLD:
+      return R_X64_TLSLD;
+    case ELF_R_X86_64_GOTTPOFF:
+      return R_X64_GOTTPOFF;
     case ELF_R_X86_64_GLOB_DAT:
       return R_X64_GLOB_DAT;
     case ELF_R_X86_64_JUMP_SLOT:
diff --git a/src/obj/obj.h b/src/obj/obj.h
@@ -153,6 +153,18 @@ typedef enum RelocKind {
   R_X64_PC8,
   R_X64_PLT32,
   R_X64_GOTPCREL,
+  R_X64_GOTPCRELX,
+  R_X64_REX_GOTPCRELX,
+  R_X64_GOTPC32,
+  R_X64_GOTOFF64,
+  R_X64_TPOFF32,
+  R_X64_TPOFF64,
+  R_X64_DTPOFF32,
+  R_X64_DTPMOD64,
+  R_X64_DTPOFF64,
+  R_X64_TLSGD,
+  R_X64_TLSLD,
+  R_X64_GOTTPOFF,
   R_X64_GLOB_DAT,
   R_X64_JUMP_SLOT,
   R_X64_RELATIVE,