Merge branch 'feature/add_kasan_support' into 'master'

feat(kasan): add Kernel Address Sanitizer (KASAN) support for ESP-IDF

Closes IDF-13467

See merge request espressif/esp-idf!48106

components/esp_system/port/cpu_start.c

@@ -401,6 +401,18 @@ void IRAM_ATTR do_multicore_settings(void)
 FORCE_INLINE_ATTR IRAM_ATTR void init_cpu(void)
 {
 #ifdef __riscv
+    // Configure the global pointer register.
+    // This must be the first thing the IDF app does on RISC-V, as any other
+    // piece of code could be relaxed by the linker to access something relative
+    // to __global_pointer$. With KASAN enabled, even calls like
+    // esp_cpu_dbgr_is_attached() are instrumented and may emit gp-relative
+    // loads, so gp must be set up before any C function call.
+    __asm__ __volatile__(
+        ".option push\n"
+        ".option norelax\n"
+        "la gp, __global_pointer$\n"
+        ".option pop"
+    );
     if (esp_cpu_dbgr_is_attached()) {
         /* Let debugger some time to detect that target started, halt it, enable ebreaks and resume.
            500ms should be enough. */
@@ -408,15 +420,6 @@ FORCE_INLINE_ATTR IRAM_ATTR void init_cpu(void)
             esp_rom_delay_us(100000);
         }
     }
-    // Configure the global pointer register
-    // (This should be the first thing IDF app does, as any other piece of code could be
-    // relaxed by the linker to access something relative to __global_pointer$)
-    __asm__ __volatile__(
-        ".option push\n"
-        ".option norelax\n"
-        "la gp, __global_pointer$\n"
-        ".option pop"
-    );
 #endif
 
     /* NOTE: When ESP-TEE is enabled, this sets up the callback function