From 8cc075c6a736fdde56ca2da03a868821695765f4 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Sun, 13 Sep 2026 23:33:14 +0200
Subject: Add threadvar section for thread-local variables

---
 boot/lexer.ll         |  3 +++
 boot/name_analysis.cc |  1 +
 boot/parser.yy        | 11 +++++++++++
 3 files changed, 15 insertions(+)

(limited to 'boot')

diff --git a/boot/lexer.ll b/boot/lexer.ll
index 89eb4ed..1cccd35 100644
--- a/boot/lexer.ll
+++ b/boot/lexer.ll
@@ -134,6 +134,9 @@ const {
 var {
     return yy::parser::make_VAR(this->location);
 }
+threadvar {
+    return yy::parser::make_THREADVAR(this->location);
+}
 type {
     return yy::parser::make_TYPE(this->location);
 }
diff --git a/boot/name_analysis.cc b/boot/name_analysis.cc
index d5b2e91..8820684 100644
--- a/boot/name_analysis.cc
+++ b/boot/name_analysis.cc
@@ -1419,6 +1419,7 @@ namespace elna::boot
             variable_symbol->alignment =
                 evaluate_attributes<attribute_kind::aligned>(variable_identifier.attributes).alignment;
             variable_symbol->value = computed;
+            variable_symbol->is_thread_local = declaration->is_thread_local;
         }
     }
 
diff --git a/boot/parser.yy b/boot/parser.yy
index 68af60e..ab386fe 100644
--- a/boot/parser.yy
+++ b/boot/parser.yy
@@ -100,6 +100,7 @@ along with GCC; see the file COPYING3.  If not see
     NIL "nil"
     CONST "const"
     VAR "var"
+    THREADVAR "threadvar"
     PROCEDURE "proc"
     TYPE "type"
     RECORD "record"
@@ -189,6 +190,16 @@ module_declaration:
         {
             std::vector<boot::variable_declaration *> variables = $2;
 
+            $$.insert($$.end(), variables.begin(), variables.end());
+        }
+    | "threadvar" variable_declarations
+        {
+            std::vector<boot::variable_declaration *> variables = $2;
+
+            for (boot::variable_declaration *const variable : variables)
+            {
+                variable->is_thread_local = true;
+            }
             $$.insert($$.end(), variables.begin(), variables.end());
         }
     | procedure_declaration { $$.emplace_back($1); }
-- 
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