Move C++ constructor and destructor tables from .bss to .irom0 (flash) (#8737)

Author: metarutaiga

Diff for: tools/sdk/ld/eagle.app.v6.common.ld.h

@@ -162,6 +162,24 @@ SECTIONS
     *(.rodata._ZTV*) /* C++ vtables */
 #endif
 
+    . = ALIGN(4);       /* this table MUST be 4-byte aligned */
+    /*  C++ constructor and destructor tables, properly ordered:  */
+    __init_array_start = ABSOLUTE(.);
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    __init_array_end = ABSOLUTE(.);
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+    . = ALIGN(4);       /* this table MUST be 4-byte aligned */
+    _bss_table_start = ABSOLUTE(.);
+    LONG(_bss_start)
+    LONG(_bss_end)
+    _bss_table_end = ABSOLUTE(.);
+
     *libgcc.a:unwind-dw2.o(.literal .text .rodata .literal.* .text.* .rodata.*)
     *libgcc.a:unwind-dw2-fde.o(.literal .text .rodata .literal.* .text.* .rodata.*)
 

Diff for: tools/sdk/ld/eagle.app.v6.common.ld.vtables.h

@@ -12,18 +12,7 @@
     *(.gnu.linkonce.e.*)
     *(.gnu.version_r)
     *(.eh_frame)
-    . = (. + 3) & ~ 3;
-    /*  C++ constructor and destructor tables, properly ordered:  */
-    __init_array_start = ABSOLUTE(.);
-    KEEP (*crtbegin.o(.ctors))
-    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
-    KEEP (*(SORT(.ctors.*)))
-    KEEP (*(.ctors))
-    __init_array_end = ABSOLUTE(.);
-    KEEP (*crtbegin.o(.dtors))
-    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
-    KEEP (*(SORT(.dtors.*)))
-    KEEP (*(.dtors))
+    . = ALIGN(4);
     /*  C++ exception handlers table:  */
     __XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
     *(.xt_except_desc)
@@ -32,11 +21,6 @@
     *(.xt_except_desc_end)
     *(.dynamic)
     *(.gnu.version_d)
-    . = ALIGN(4);       /* this table MUST be 4-byte aligned */
-    _bss_table_start = ABSOLUTE(.);
-    LONG(_bss_start)
-    LONG(_bss_end)
-    _bss_table_end = ABSOLUTE(.);
     _rodata_end = ABSOLUTE(.);
   } >dram0_0_seg :dram0_0_phdr