Move debug exception vector to vector_defaults.S

components/esp32/panic.c

@@ -241,6 +241,9 @@ void panicHandler(XtExcFrame *frame)
 
 void xt_unhandled_exception(XtExcFrame *frame)
 {
+    //Disable all interrupts, so a backtrace isn't interrupted by needless stuff
+    asm volatile("wsr %0,INTENABLE\nesync\n"::"r"(x));
+
     haltOtherCore();
     panicPutStr("Guru Meditation Error of type ");
     int exccause = frame->exccause;

components/freertos/xtensa_int_alias.S

@@ -1,5 +0,0 @@
-
-    .global xt_highint5
-    .global _xt_highint5
-    .weak xt_highint5
-    .set xt_highint5, _xt_highint5

components/freertos/xtensa_vector_defaults.S

@@ -5,10 +5,29 @@
 #include "soc/soc.h"
 
 /*
-This file contains the default handlers for the high interrupt levels. The default behavious
-is to just exit the interrupt.
+This file contains the default handlers for the high interrupt levels as well as some specialized exceptions. 
+The default behaviour is to just exit the interrupt or call the panic handler on the exceptions
 */
 
+
+#if XCHAL_HAVE_DEBUG
+    .global    xt_debugexception
+    .weak xt_debugexception
+    .set xt_debugexception, _xt_debugexception
+    .section .iram1,"ax"
+    .type       _xt_debugexception,@function
+    .align      4
+
+_xt_debugexception:
+    movi    a0,PANIC_RSN_DEBUGEXCEPTION
+    wsr     a0,EXCCAUSE
+    call0   _xt_panic                       /* does not return */
+    rsr     a0, EXCSAVE+XCHAL_DEBUGLEVEL
+    rfi     XCHAL_DEBUGLEVEL
+
+#endif /* Debug exception */
+
+
 #if XCHAL_NUM_INTLEVELS >=2 && XCHAL_EXCM_LEVEL <2 && XCHAL_DEBUGLEVEL !=2
     .global    xt_highint2
     .weak xt_highint2

components/freertos/xtensa_vectors.S

@@ -471,28 +471,10 @@ Debug Exception.
     .section    .DebugExceptionVector.text, "ax"
     .global     _DebugExceptionVector
     .align      4
-
+    .global     xt_debugexception
 _DebugExceptionVector:
-
-    #ifdef XT_SIMULATOR
-    /*
-    In the simulator, let the debugger (if any) handle the debug exception,
-    or simply stop the simulation:
-    */
-    wsr     a2, EXCSAVE+XCHAL_DEBUGLEVEL    /* save a2 where sim expects it */
-    movi    a2, SYS_gdb_enter_sktloop
-    simcall                                 /* have ISS handle debug exc. */
-    #elif 0 /* change condition to 1 to use the HAL minimal debug handler */
-    wsr     a3, EXCSAVE+XCHAL_DEBUGLEVEL
-    movi    a3, xthal_debugexc_defhndlr_nw  /* use default debug handler */
-    jx      a3
-    #else
-    wsr     a0, EXCSAVE+XCHAL_DEBUGLEVEL    /* save original a0 somewhere */
-    movi    a0,PANIC_RSN_DEBUGEXCEPTION
-    wsr     a0,EXCCAUSE
-    call0   _xt_panic                       /* does not return */
-    rfi     XCHAL_DEBUGLEVEL                /* make a0 point here not later */
-    #endif
+    wsr     a0, EXCSAVE+XCHAL_DEBUGLEVEL    /* preserve a0 */
+    call0   xt_debugexception            /* load exception handler */
 
     .end        literal_prefix