adds some hooks for SMT startup

env/riscv_vp/sections.ld

@@ -9,7 +9,7 @@ PHDRS
 SECTIONS
 {
   __stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
-
+  __stack_segment_size = DEFINED(__stack_segment_size) ? __stack_segment_size : __stack_size;
   .init ORIGIN(REGION_TEXT)        :
   {
     KEEP (*(SORT_NONE(.init)))
@@ -39,6 +39,15 @@ SECTIONS
     *(.gnu.linkonce.r.*)
   } >REGION_RODATA AT>REGION_RODATA :flash
 
+  .srodata        :
+  {
+    *(.srodata.cst16)
+    *(.srodata.cst8)
+    *(.srodata.cst4)
+    *(.srodata.cst2)
+    *(.srodata .srodata.*)
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
   . = ALIGN(4);
 
   .preinit_array  :
@@ -126,15 +135,6 @@ SECTIONS
     *(.gnu.linkonce.s.*)
   } >REGION_DATA AT>REGION_RODATA :ram_init
 
-  .srodata        :
-  {
-    *(.srodata.cst16)
-    *(.srodata.cst8)
-    *(.srodata.cst4)
-    *(.srodata.cst2)
-    *(.srodata .srodata.*)
-  } >REGION_DATA AT>REGION_RODATA :ram_init
-
   . = ALIGN(4);
   PROVIDE( _edata = . );
   PROVIDE( edata = . );
@@ -157,10 +157,10 @@ SECTIONS
   PROVIDE( _end = . );
   PROVIDE( end = . );
 
-  .stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
+  .stack ORIGIN(ram) + LENGTH(ram) - __stack_segment_size :
   {
     PROVIDE( _heap_end = . );
-    . = __stack_size;
+    . = __stack_segment_size;
     PROVIDE( _sp = . );
   } >REGION_BSS AT>REGION_BSS :ram