initial risc-v exampleHEADmaster

1 files changed, 29 insertions, 0 deletions

diff --git a/riscv/include/asm/stacktrace.h b/riscv/include/asm/stacktrace.h
new file mode 100644
index 0000000..b1495a7
--- /dev/null
+++ b/riscv/include/asm/stacktrace.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_RISCV_STACKTRACE_H
+#define _ASM_RISCV_STACKTRACE_H
+
+#include <linux/sched.h>
+#include <asm/ptrace.h>
+
+struct stackframe {
+	unsigned long fp;
+	unsigned long ra;
+};
+
+extern void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
+				    bool (*fn)(void *, unsigned long), void *arg);
+extern void dump_backtrace(struct pt_regs *regs, struct task_struct *task,
+			   const char *loglvl);
+
+static inline bool on_thread_stack(void)
+{
+	return !(((unsigned long)(current->stack) ^ current_stack_pointer) & ~(THREAD_SIZE - 1));
+}
+
+
+#ifdef CONFIG_VMAP_STACK
+DECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack);
+#endif /* CONFIG_VMAP_STACK */
+
+#endif /* _ASM_RISCV_STACKTRACE_H */