1 files changed, 54 insertions, 0 deletions
diff --git a/ports/unix/stack_size.h b/ports/unix/stack_size.h
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+++ b/ports/unix/stack_size.h
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+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2025 Angus Gratton
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_UNIX_STACK_SIZE_H
+#define MICROPY_INCLUDED_UNIX_STACK_SIZE_H
+
+#include "py/misc.h"
+
+// Define scaling factors for the stack size (also applies to main thread)
+#ifndef UNIX_STACK_MULTIPLIER
+
+#if defined(__arm__) && !defined(__thumb2__)
+// ARM (non-Thumb) architectures require more stack.
+#define UNIX_STACK_MUL_ARM 2
+#else
+#define UNIX_STACK_MUL_ARM 1
+#endif
+
+#if MP_SANITIZER_BUILD
+// Sanitizer features consume significant stack in some cases
+// This multiplier can probably be removed when using GCC 12 or newer.
+#define UNIX_STACK_MUL_SANITIZERS 4
+#else
+#define UNIX_STACK_MUL_SANITIZERS 1
+#endif
+
+// Double the stack size for 64-bit builds, plus additional scaling
+#define UNIX_STACK_MULTIPLIER ((sizeof(void *) / 4) * UNIX_STACK_MUL_ARM * UNIX_STACK_MUL_SANITIZERS)
+
+#endif // UNIX_STACK_MULTIPLIER
+
+#endif // MICROPY_INCLUDED_UNIX_STACK_SIZE_H