acassis commented on code in PR #7661:
URL: https://github.com/apache/incubator-nuttx/pull/7661#discussion_r1031771614
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arch/risc-v/src/esp32c3/esp32c3_start.c:
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@@ -136,6 +177,30 @@ uintptr_t g_idle_topstack = ESP32C3_IDLESTACK_TOP;
* Private Functions
****************************************************************************/
+/****************************************************************************
+ * Name: setup_syscall_table
+ *
+ * Description:
+ * Configure the syscall table used by the ROM code for calling C library
+ * functions.
+ * ESP32-C3 ROM code contains implementations of some of C library
+ * functions. Whenever a function in ROM needs to use a syscall, it calls
+ * a pointer to the corresponding syscall implementation defined in the
+ * syscall_stub_table struct.
+ *
+ * Input Parameters:
+ * None.
+ *
+ * Returned Value:
+ * None.
+ *
+ ****************************************************************************/
+
+static void setup_syscall_table(void)
+{
+ syscall_table_ptr = &g_stub_table;
Review Comment:
Yes, the basic idea of it is to force the ROM functions to use the system
(NuttX) libc instead of using the internal newlibc implemented in the ROM code.
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