ldscripts/cpp: add -CC option to preserve comments

Author: d-a-v

Diff for: tools/sdk/ld/Makefile

@@ -9,9 +9,9 @@ all:
 	@echo "  heap: move c++ vtables to heap"
 
 heap:
-	@(echo "$(WARN)"; $(CPP) -E -DVTABLES_IN_DRAM $(COMMON).h | grep -v '^#') > $(COMMON)
+	@(echo "$(WARN)"; $(CPP) -CC -E -DVTABLES_IN_DRAM $(COMMON).h | grep -v '^#') > $(COMMON)
 	@echo "c++ vtables moved to heap"
 
 iram:
-	@(echo "$(WARN)"; $(CPP) -E -DVTABLES_IN_IRAM $(COMMON).h | grep -v '^#') > $(COMMON)
+	@(echo "$(WARN)"; $(CPP) -CC -E -DVTABLES_IN_IRAM $(COMMON).h | grep -v '^#') > $(COMMON)
 	@echo "c++ vtables moved to iram"

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

@@ -1,6 +1,6 @@
 /* warning: AUTOGENERATED from eagle.app.v6.common.ld*.h */
-
-
+/* This linker script generated from xt-genldscripts.tpp for LSP . */
+/* Linker Script for ld -N */
 
 PHDRS
 {
@@ -12,7 +12,7 @@ PHDRS
 }
 
 
-
+/*  Default entry point:  */
 ENTRY(call_user_start)
 EXTERN(_DebugExceptionVector)
 EXTERN(_DoubleExceptionVector)
@@ -21,7 +21,7 @@ EXTERN(_NMIExceptionVector)
 EXTERN(_UserExceptionVector)
 EXTERN(core_version)
 PROVIDE(_memmap_vecbase_reset = 0x40000000);
-
+/* Various memory-map dependent cache attribute settings: */
 _memmap_cacheattr_wb_base = 0x00000110;
 _memmap_cacheattr_wt_base = 0x00000110;
 _memmap_cacheattr_bp_base = 0x00000220;
@@ -159,7 +159,7 @@ SECTIONS
     *.cpp.o(.iram.text)
     *.c.o(.iram.text)
 
-    *(.rodata._ZTV*)
+    *(.rodata._ZTV*) /* C++ vtables */
 
     *(.fini.literal)
     *(.fini)
@@ -184,7 +184,7 @@ SECTIONS
     *(.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))
@@ -195,15 +195,15 @@ SECTIONS
     KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
     KEEP (*(SORT(.dtors.*)))
     KEEP (*(.dtors))
-
+    /*  C++ exception handlers table:  */
     __XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
     *(.xt_except_desc)
     *(.gnu.linkonce.h.*)
     __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
     *(.xt_except_desc_end)
     *(.dynamic)
     *(.gnu.version_d)
-    . = ALIGN(4);
+    . = ALIGN(4); /* this table MUST be 4-byte aligned */
     _bss_table_start = ABSOLUTE(.);
     LONG(_bss_start)
     LONG(_bss_end)
@@ -231,8 +231,9 @@ SECTIONS
     . = ALIGN (8);
     _bss_end = ABSOLUTE(.);
     _heap_start = ABSOLUTE(.);
-
+/*    _stack_sentry = ALIGN(0x8); */
   } >dram0_0_seg :dram0_0_bss_phdr
+/* __stack = 0x3ffc8000; */
 
 
   .lit4 : ALIGN(4)
@@ -247,5 +248,5 @@ SECTIONS
 
 }
 
-
+/* get ROM code address */
 INCLUDE "../ld/eagle.rom.addr.v6.ld"