linker: esp32s2: changes to enable newlibc and cpp support

This PR adds missing configuration to enable newlibc
and cpp code to run in ESP32S2 SoC. This isn't enough though.
Toolchain changes are also needed and will come up next.

Signed-off-by: Sylvio Alves <[email protected]>

Author: sylvioalves

soc/xtensa/esp32s2/linker.ld

@@ -79,6 +79,8 @@ ENTRY(CONFIG_KERNEL_ENTRY)
 
 _rom_store_table = 0;
 
+_heap_sentry = 0x3fffe710;
+
 SECTIONS
 {
   /* Reserve space for MCUboot header in the binary */
@@ -131,9 +133,6 @@ SECTIONS
   {
     _rodata_start = ABSOLUTE(.);
 
-    *(.rodata_desc .rodata_desc.*)
-    *(.rodata_custom_desc .rodata_custom_desc.*)
-
     . = ALIGN(4);
     #include <snippets-rodata.ld>
 
@@ -154,14 +153,7 @@ SECTIONS
     __eh_frame = ABSOLUTE(.);
     KEEP(*(.eh_frame))
     . = (. + 7) & ~ 3;
-    /* C++ constructor and destructor tables */
-    __init_array_start = ABSOLUTE(.);
-    KEEP (*(EXCLUDE_FILE (*crtend.* *crtbegin.*) .ctors SORT(.ctors.*)))
-    __init_array_end = ABSOLUTE(.);
-    KEEP (*crtbegin.*(.dtors))
-    KEEP (*(EXCLUDE_FILE (*crtend.*) .dtors))
-    KEEP (*(SORT(.dtors.*)))
-    KEEP (*(.dtors))
+
     /*  C++ exception handlers table:  */
     __XT_EXCEPTION_DESCS_ = ABSOLUTE(.);
     *(.xt_except_desc)
@@ -193,12 +185,12 @@ SECTIONS
   #pragma push_macro("GROUP_ROM_LINK_IN")
   #undef GROUP_ROM_LINK_IN
   #define GROUP_ROM_LINK_IN(vregion, lregion) > RODATA_REGION AT > lregion
-  #include "linker/common-rom/common-rom-kernel-devices.ld"
-  #include "linker/common-rom/common-rom-cpp.ld"
-  #include "linker/common-rom/common-rom-net.ld"
-  #include "linker/common-rom/common-rom-bt.ld"
-  #include "linker/common-rom/common-rom-debug.ld"
-  #include "linker/common-rom/common-rom-misc.ld"
+  #include <zephyr/linker/common-rom/common-rom-cpp.ld>
+  #include <zephyr/linker/common-rom/common-rom-kernel-devices.ld>
+  #include <zephyr/linker/common-rom/common-rom-net.ld>
+  #include <zephyr/linker/common-rom/common-rom-bt.ld>
+  #include <zephyr/linker/common-rom/common-rom-debug.ld>
+  #include <zephyr/linker/common-rom/common-rom-misc.ld>
   #pragma pop_macro("GROUP_ROM_LINK_IN")
 
   /* Send .iram0 code to iram */
@@ -274,6 +266,7 @@ SECTIONS
     *libzephyr.a:log_backend_uart.*(.literal .text .literal.* .text.*)
     *libzephyr.a:loader.*(.literal .text .literal.* .text.*)
     *liblib__libc__minimal.a:string.*(.literal .text .literal.* .text.*)
+    *liblib__libc__newlib.a:string.*(.literal .text .literal.* .text.*)
     *libphy.a:( .phyiram .phyiram.*)
     *libgcov.a:(.literal .text .literal.* .text.*)
 
@@ -367,22 +360,25 @@ SECTIONS
     . = ALIGN(4);
   } GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
 
+  #include <zephyr/linker/cplusplus-rom.ld>
   #include <snippets-data-sections.ld>
   #include <zephyr/linker/common-ram.ld>
   #include <snippets-ram-sections.ld>
+  #include <zephyr/linker/cplusplus-ram.ld>
 
   /* logging sections should be placed in RAM area to avoid flash cache disabled issues */
   #pragma push_macro("GROUP_ROM_LINK_IN")
   #undef GROUP_ROM_LINK_IN
   #define GROUP_ROM_LINK_IN GROUP_DATA_LINK_IN
-  #include "linker/common-rom/common-rom-logging.ld"
+  #include <zephyr/linker/common-rom/common-rom-logging.ld>
   #pragma pop_macro("GROUP_ROM_LINK_IN")
 
   .dummy.dram.data :
   {
     . = ALIGN(4);
     #include <snippets-rwdata.ld>
     . = ALIGN(4);
+    _end = ABSOLUTE(.);
     _data_end = ABSOLUTE(.);
   } GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
 
@@ -475,9 +471,38 @@ SECTIONS
 
 #include <zephyr/linker/debug-sections.ld>
 
-  SECTION_PROLOGUE(.xtensa.info, 0,)
+  .xtensa.info  0 :  { *(.xtensa.info) }
+  .xt.insn 0 :
+  {
+    KEEP (*(.xt.insn))
+    KEEP (*(.gnu.linkonce.x.*))
+  }
+  .xt.prop 0 :
+  {
+    KEEP (*(.xt.prop))
+    KEEP (*(.xt.prop.*))
+    KEEP (*(.gnu.linkonce.prop.*))
+  }
+  .xt.lit 0 :
+  {
+    KEEP (*(.xt.lit))
+    KEEP (*(.xt.lit.*))
+    KEEP (*(.gnu.linkonce.p.*))
+  }
+  .xt.profile_range 0 :
+  {
+    KEEP (*(.xt.profile_range))
+    KEEP (*(.gnu.linkonce.profile_range.*))
+  }
+  .xt.profile_ranges 0 :
+  {
+    KEEP (*(.xt.profile_ranges))
+    KEEP (*(.gnu.linkonce.xt.profile_ranges.*))
+  }
+  .xt.profile_files 0 :
   {
-    *(.xtensa.info)
+    KEEP (*(.xt.profile_files))
+    KEEP (*(.gnu.linkonce.xt.profile_files.*))
   }
 }