More cleanup esp32s3

ref_app/src/mcal/xtensa_esp32_s3/mcal_cpu.cpp

@@ -24,7 +24,7 @@ extern "C"
 }
 
 extern "C"
-void Mcu_StartCore1()
+auto Mcu_StartCore1() -> void
 {
   // Note: This subroutine is called from core0.
 
@@ -65,6 +65,8 @@ void Mcu_StartCore1()
   // The send/receive transaction of the entry address is
   // carried out via core0 deliberately writing the core1
   // entry address in the SYSTEM_CORE_1_CONTROL_1_REG register.
+  // When this is achieved and done, core1 exits the trap
+  // and progresses forward.
 
   {
     // Set the core1 entry address.
@@ -82,7 +84,7 @@ void Mcu_StartCore1()
 }
 
 extern "C"
-void main_c1()
+auto main_c1() -> void
 {
   // Note: This subroutine executes in core1. It has been called
   // by the core1 branch of the subroutine _start().

ref_app/target.vcxproj

@@ -1006,8 +1006,8 @@
     <None Include="target\micros\xtensa_esp32_s3\make\xtensa_esp32_s3_files.gmk" />
     <None Include="target\micros\xtensa_esp32_s3\make\xtensa_esp32_s3_flags.gmk" />
     <None Include="target\micros\xtensa_esp32_s3\make\xtensa_esp32_s3_flags_extra.gmk" />
-    <None Include="target\micros\xtensa_esp32_s3\startup\boot.s" />
-    <None Include="target\micros\xtensa_esp32_s3\startup\IntVectTable.s" />
+    <None Include="target\micros\xtensa_esp32_s3\startup\boot.S" />
+    <None Include="target\micros\xtensa_esp32_s3\startup\IntVectTable.S" />
     <None Include="target\micros\xtensa_esp32_s3\startup\Std\ieee754-sf.S" />
     <None Include="target\micros\xtensa_esp32_s3\startup\Std\lib1funcs.S" />
   </ItemGroup>

ref_app/target.vcxproj.filters

@@ -636,10 +636,10 @@
     <None Include="target\micros\xtensa_esp32_s3\make\xtensa_esp32_s3_flags.gmk">
       <Filter>micros\xtensa_esp32_s3\make</Filter>
     </None>
-    <None Include="target\micros\xtensa_esp32_s3\startup\boot.s">
+    <None Include="target\micros\xtensa_esp32_s3\startup\boot.S">
       <Filter>micros\xtensa_esp32_s3\startup</Filter>
     </None>
-    <None Include="target\micros\xtensa_esp32_s3\startup\IntVectTable.s">
+    <None Include="target\micros\xtensa_esp32_s3\startup\IntVectTable.S">
       <Filter>micros\xtensa_esp32_s3\startup</Filter>
     </None>
     <None Include="target\micros\xtensa_esp32_s3\startup\Std\ieee754-sf.S">

ref_app/target/micros/v850es_fx2/make/v850es_fx2.ld

@@ -1,3 +1,10 @@
+/*
+ Copyright Christopher Kormanyos 2014 - 2025.
+ Distributed under the Boost Software License,
+ Version 1.0. (See accompanying file LICENSE_1_0.txt
+ or copy at http://www.boost.org/LICENSE_1_0.txt)
+*/
+
 /* Linker script for NEC V850 FX2 upD70F3231 */
 
 INPUT(libc.a libg.a libm.a libgcc.a)

ref_app/target/micros/xtensa_esp32_s3/make/xtensa_esp32_s3.ld

@@ -1,23 +1,28 @@
+/*
+ Copyright Christopher Kormanyos 2025.
+ Distributed under the Boost Software License,
+ Version 1.0. (See accompanying file LICENSE_1_0.txt
+ or copy at http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+/* Originally from: */
 /******************************************************************************************
   Filename    : Memory_Map.ld
-  
+
   Core        : Xtensa LX7
-  
+
   MCU         : ESP32-S3
-    
+
   Author      : Chalandi Amine
- 
+
   Owner       : Chalandi Amine
-  
+
   Date        : 16.02.2025
-  
+
   Description : Linker description file script for ESP32-S3
-
-******************************************************************************************/
 
-/******************************************************************************************
- ELF Entrypoint
 ******************************************************************************************/
+
 ENTRY(_start)
 
 INPUT(libgcc_call0_abi.a libc_call0_abi.a libg_call0_abi.a libm_call0_abi.a)
@@ -70,7 +75,7 @@ SECTIONS
     . = ALIGN(4);
   } > D_SRAM
 
- /* Section for constructors */
+  /* Section for constructors */
   .ctors : ALIGN(4)
   {
     _ctors_begin = .;

ref_app/target/micros/xtensa_esp32_s3/make/xtensa_esp32_s3_flags.gmk

@@ -46,7 +46,8 @@ TGT_ALLFLAGS  = -O1
                 -fno-stack-protector                                              \
                 -nostdlib                                                         \
                 -gdwarf-4                                                         \
-                -DCONFIG_IDF_TARGET_ESP32S3
+                -DCONFIG_IDF_TARGET_ESP32S3                                       \
+                -DI_KNOW_WHAT_I_AM_DOING
 
 
 TGT_CFLAGS    = -std=c23                                                          \
@@ -67,7 +68,6 @@ TGT_LDFLAGS   = -nostartfiles
                 -Wl,--gc-sections                                                 \
                 -Wl,-Map,$(APP).map                                               \
                 -T $(LINKER_DEFINITION_FILE)                                      \
-                -z,max-page-size=4096                                             \
                 --specs=nano.specs                                                \
                 --specs=nosys.specs
 

ref_app/target/micros/xtensa_esp32_s3/startup/IntVectTable.s → ref_app/target/micros/xtensa_esp32_s3/startup/IntVectTable.S

@@ -9,7 +9,7 @@
 ******************************************************************************************/
 
 /******************************************************************************************
-  Filename    : IntVectTable.s
+  Filename    : IntVectTable.S
 
   Core        : Xtensa LX7
 

ref_app/target/micros/xtensa_esp32_s3/startup/Std/StdLib.cpp

@@ -209,49 +209,4 @@ void* memcpy (void* dest, const void* src, size_t n)
   return dest;
 }
 
-void* memmove (void* dest, const void* src, size_t n)
-{
-  uint8_t* from = (uint8_t*) src;
-  uint8_t* to   = (uint8_t*) dest;
-
-  if(from == to || n == 0)
-  {
-    return dest;
-  }
-
-  if(to > from && (ptrdiff_t) (to - from) < (ptrdiff_t) n)
-  {
-    // to overlaps with from
-    //  <from......>
-    //         <to........>
-    // copy in reverse, to avoid overwriting from
-
-    for(ptrdiff_t i = (ptrdiff_t) (n - 1); i >= 0; --i)
-    {
-      to[i] = from[i];
-    }
-
-    return dest;
-  }
-
-  if(from > to && (ptrdiff_t) (from - to) < (ptrdiff_t) n)
-  {
-    // to overlaps with from
-    //        <from......>
-    //  <to........>
-    // copy forwards, to avoid overwriting from
-
-    for(size_t i = 0U; i < n; ++i)
-    {
-      to[i] = from[i];
-    }
-
-    return dest;
-  }
-
-  memcpy(dest, src, n);
-
-  return dest;
-}
-
 } // extern "C"

ref_app/target/micros/xtensa_esp32_s3/startup/boot.s → ref_app/target/micros/xtensa_esp32_s3/startup/boot.S

@@ -9,7 +9,7 @@
 ******************************************************************************************/
 
 /******************************************************************************************
-  Filename    : boot.s
+  Filename    : boot.S
 
   Core        : Xtensa LX7