Merge pull request #257 from mrx23dot/isr_asm

added __isenabled_irq __get_cpu_sp, minor linting

ch32v003fun/ch32v003fun.h

@@ -4563,6 +4563,45 @@ RV_STATIC_INLINE void __disable_irq()
   __asm volatile ("csrw mstatus, %0" : : "r" (result) );
 }
 
+/*********************************************************************
+ * @fn      __isenabled_irq
+ *
+ * @brief   Is Global Interrupt enabled
+ *
+ * @return  1: yes, 0: no
+ */
+RV_STATIC_INLINE uint8_t __isenabled_irq(void)
+{
+    uint32_t result;
+
+    __asm volatile(
+#if __GNUC__ > 10
+    ".option arch, +zicsr\n"
+#endif
+    "csrr %0," "mstatus": "=r"(result));
+    return (result & 0x08) != 0u;
+}
+
+/*********************************************************************
+ * @fn      __get_cpu_sp
+ *
+ * @brief   Get stack pointer
+ *
+ * @return  stack pointer
+ */
+RV_STATIC_INLINE uint32_t __get_cpu_sp(void);
+RV_STATIC_INLINE uint32_t __get_cpu_sp(void)
+{
+  uint32_t result;
+
+  __asm volatile(
+#if __GNUC__ > 10
+    ".option arch, +zicsr\n"
+#endif
+  "mv %0, sp" : "=r"(result));
+  return result;
+}
+
 /*********************************************************************
  * @fn      __NOP
  *