From a6fb72230094251479e83eaa3c6b7d73b9627131 Mon Sep 17 00:00:00 2001
From: Huaqi Fang <578567190@qq.com>
Date: Thu, 26 Sep 2024 11:35:25 +0800
Subject: [PATCH] SoC/evalsoc: Fix undeclared exc_entry when CFG_HAS_TRAP_CSR
 macro defined

Error like this error: 'exc_entry' undeclared (first use in this function)

Signed-off-by: Huaqi Fang <578567190@qq.com>
---
 SoC/evalsoc/Common/Include/cpufeature.h    | 4 ++++
 SoC/evalsoc/Common/Source/system_evalsoc.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/SoC/evalsoc/Common/Include/cpufeature.h b/SoC/evalsoc/Common/Include/cpufeature.h
index 771f82c6..2ef99109 100644
--- a/SoC/evalsoc/Common/Include/cpufeature.h
+++ b/SoC/evalsoc/Common/Include/cpufeature.h
@@ -26,6 +26,10 @@ extern "C" {
 // EXCP is the exception module, if not defined, it means not present
 // If not present, you need to remove .exception section in linker script
 #define CFG_HAS_EXCP
+
+// Define it when you have TRAP related CSR such as MTVT and MTVEC
+//#define CFG_HAS_TRAP_CSR
+
 // PMONITOR is the mcycle and minsret counter, if not defined, it means not present
 #define CFG_HAS_PMONITOR
 
diff --git a/SoC/evalsoc/Common/Source/system_evalsoc.c b/SoC/evalsoc/Common/Source/system_evalsoc.c
index 8c5eb820..a4ab1b81 100644
--- a/SoC/evalsoc/Common/Source/system_evalsoc.c
+++ b/SoC/evalsoc/Common/Source/system_evalsoc.c
@@ -36,6 +36,10 @@
 #define SYSTEM_CLOCK    (16000000UL)
 #endif
 
+#ifdef CFG_HAS_EXCP
+extern void exc_entry(void);
+#endif
+
 /**
  * \defgroup  NMSIS_Core_SystemConfig       System Device Configuration
  * \brief Functions for system and clock setup available in system_<device>.c.