diff --git a/backtrace.sh b/backtrace.sh
new file mode 100644
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--- /dev/null
+++ b/backtrace.sh
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+
+#
+# Copyright (c) 2023-2024, Arm Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# Dump the current call stack.
+#
+# This function takes no arguments, and prints the call stack of the script at
+# the point at which it was called.
+dump_stack() {(
+	set +x
+
+	for ((i = 1; i < ${#FUNCNAME[@]}; i++)); do
+		local function="${FUNCNAME[$((i + 1))]:-<unknown>}"
+		local line="${BASH_LINENO[$i]}"
+		local source="${BASH_SOURCE[$((i + 1))]:-<unknown>}"
+
+		echo -e "[$i]: ${source}:${line} (${function})"
+	done
+)}
+
+# Dump the process tree.
+#
+# This function takes no arguments, and prints the process tree of the current
+# process. This can be useful for, for example, determining the arguments that
+# the script has been called with.
+dump_process_tree() {
+	ps --forest --no-headers --format command
+}
+
+# Dump the complete program state.
+#
+# This function takes no arguments, and combines the output of the `dump_stack`
+# and `dump_process_tree` functions.
+dump() {(
+	set +x
+
+	echo "Process tree:"
+	echo
+
+	dump_process_tree | while IFS= read -r line; do
+		echo "    ${line}"
+	done
+
+	echo
+	echo "Call stack:"
+	echo
+
+	dump_stack | while read -r line; do
+		echo "    ${line}"
+	done
+)}
+
+# Generate an error backtrace.
+#
+# This function dumps the backtrace at the point at which the function is
+# called, with additional information about the command that failed.
+#
+# This is best used as a trap handler (e.g. `trap backtrace ERR`) rather than by
+# being called directly. If you want to explicitly dump the script state, prefer
+# to use the `dump` function instead.
+backtrace() {
+	local error=$?
+	local command=${BASH_COMMAND}
+
+	(
+		set +x
+
+		echo "" >&2
+		echo "ERROR: Command at ${BASH_SOURCE[1]:-<unknown>}:${BASH_LINENO[0]} exited with error ${error}:" >&2
+		echo "ERROR:" >&2
+
+		echo "${command}" | while IFS= read -r line; do
+			echo "ERROR:     ${line}" >&2
+		done
+
+		echo "ERROR:" >&2
+
+		dump | while IFS= read -r line; do
+			echo "ERROR: ${line}" >&2
+		done
+	)
+}