[S] Change in libhwbase[master]: hw-debug: Ensure global variable default are zeros and in .bss

[Jérémy Compostella (Code Review)]

Jérémy Compostella has uploaded this change for review. ( https://review.coreboot.org/c/libhwbase/+/69854 )

Change subject: hw-debug: Ensure global variable default are zeros and in .bss
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hw-debug: Ensure global variable default are zeros and in .bss

Having global variables prevents the inclusion of the library in
coreboot romstage.

Signed-off-by: Jeremy Compostella 
Change-Id: Ib23699f3f3446219c34c60ccd9987346e17769f2
---
M debug/hw-debug.adb
1 file changed, 20 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/libhwbase refs/changes/54/69854/1

diff --git a/debug/hw-debug.adb b/debug/hw-debug.adb
index e28eb17..d116860 100644
--- a/debug/hw-debug.adb
+++ b/debug/hw-debug.adb
@@ -23,8 +23,10 @@
    SPARK_Mode => Off
 is

-   Start_Of_Line : Boolean := True;
-   Register_Write_Delay_Nanoseconds : Word64 := 0;
+   Not_Start_Of_Line : Boolean;
+   pragma Linker_Section (Not_Start_Of_Line, ".bss");
+   Register_Write_Delay_Nanoseconds : Word64;
+   pragma Linker_Section (Register_Write_Delay_Nanoseconds, ".bss");

type Base_Range is new Positive range 2 .. 16;
    type Width_Range is new Natural range 0 .. 64;
@@ -43,8 +45,8 @@
    is
       Now_US : Int64;
    begin
-      if Start_Of_Line then
-         Start_Of_Line := False;
+      if not Not_Start_Of_Line then
+         Not_Start_Of_Line := True;
          Now_US := Time.Now_US;
          Debug_Sink.Put_Char ('[');
          Do_Put_Int64 ((Now_US / 1_000_000) mod 1_000_000);
@@ -71,7 +73,7 @@
    procedure New_Line is
    begin
       HW.Debug_Sink.New_Line;
-      Start_Of_Line := True;
+      Not_Start_Of_Line := False;
    end New_Line;

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