stm: Tidy up memory labels; optimise GC root scanning.

Addresses issues #272 and #273.

1 files changed, 7 insertions, 14 deletions

diff --git a/stm/main.c b/stm/main.c
index 693fef757..be8697b65 100644
--- a/stm/main.c
+++ b/stm/main.c
@@ -171,20 +171,13 @@ static mp_obj_t pyb_info(void) {
 
     // to print info about memory
     {
-        extern void *_sidata;
-        extern void *_sdata;
-        extern void *_edata;
-        extern void *_sbss;
-        extern void *_ebss;
-        extern void *_estack;
-        extern void *_etext;
-        printf("_etext=%p\n", &_etext);
-        printf("_sidata=%p\n", &_sidata);
-        printf("_sdata=%p\n", &_sdata);
-        printf("_edata=%p\n", &_edata);
-        printf("_sbss=%p\n", &_sbss);
-        printf("_ebss=%p\n", &_ebss);
-        printf("_estack=%p\n", &_estack);
+        printf("_text_end=%p\n", &_text_end);
+        printf("_data_start_init=%p\n", &_data_start_init);
+        printf("_data_start=%p\n", &_data_start);
+        printf("_data_end=%p\n", &_data_end);
+        printf("_bss_start=%p\n", &_bss_start);
+        printf("_bss_end=%p\n", &_bss_end);
+        printf("_stack_end=%p\n", &_stack_end);
         printf("_ram_start=%p\n", &_ram_start);
         printf("_heap_start=%p\n", &_heap_start);
         printf("_heap_end=%p\n", &_heap_end);