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* [gcc r12-3794] [Ada] Make Ada.Task_Initialization compatible with No_Elaboration_Code_All
@ 2021-09-22 15:09 Pierre-Marie de Rodat
0 siblings, 0 replies; only message in thread
From: Pierre-Marie de Rodat @ 2021-09-22 15:09 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:d232417a8832c480abeb1c28abd66978b85e5081
commit r12-3794-gd232417a8832c480abeb1c28abd66978b85e5081
Author: Arnaud Charlet <charlet@adacore.com>
Date: Mon Jul 12 06:14:15 2021 -0400
[Ada] Make Ada.Task_Initialization compatible with No_Elaboration_Code_All
gcc/ada/
* libgnarl/a-tasini.ads, libgnarl/a-tasini.adb: Make compatible
with No_Elaboration_Code_All.
* libgnarl/s-taskin.ads, libgnarl/s-tassta.adb: Adjust
accordingly.
Diff:
---
gcc/ada/libgnarl/a-tasini.adb | 12 ++++++------
gcc/ada/libgnarl/a-tasini.ads | 3 ++-
gcc/ada/libgnarl/s-taskin.ads | 8 --------
gcc/ada/libgnarl/s-tassta.adb | 9 +++++++++
4 files changed, 17 insertions(+), 15 deletions(-)
diff --git a/gcc/ada/libgnarl/a-tasini.adb b/gcc/ada/libgnarl/a-tasini.adb
index c0dfe705879..a8981d6dd69 100644
--- a/gcc/ada/libgnarl/a-tasini.adb
+++ b/gcc/ada/libgnarl/a-tasini.adb
@@ -26,13 +26,13 @@
-- --
------------------------------------------------------------------------------
-with Ada.Unchecked_Conversion;
-with System.Tasking;
-
package body Ada.Task_Initialization is
- function To_STIH is new Ada.Unchecked_Conversion
- (Initialization_Handler, System.Tasking.Initialization_Handler);
+ Global_Initialization_Handler : Initialization_Handler := null;
+ pragma Atomic (Global_Initialization_Handler);
+ pragma Export (Ada, Global_Initialization_Handler,
+ "__gnat_global_initialization_handler");
+ -- Global handler called when each task initializes.
--------------------------------
-- Set_Initialization_Handler --
@@ -40,7 +40,7 @@ package body Ada.Task_Initialization is
procedure Set_Initialization_Handler (Handler : Initialization_Handler) is
begin
- System.Tasking.Global_Initialization_Handler := To_STIH (Handler);
+ Global_Initialization_Handler := Handler;
end Set_Initialization_Handler;
end Ada.Task_Initialization;
diff --git a/gcc/ada/libgnarl/a-tasini.ads b/gcc/ada/libgnarl/a-tasini.ads
index dd2a17c6b14..2366145da04 100644
--- a/gcc/ada/libgnarl/a-tasini.ads
+++ b/gcc/ada/libgnarl/a-tasini.ads
@@ -30,7 +30,8 @@
-- when tasks start.
package Ada.Task_Initialization is
- pragma Preelaborate (Task_Initialization);
+ pragma Preelaborate;
+ pragma No_Elaboration_Code_All;
type Initialization_Handler is access procedure;
diff --git a/gcc/ada/libgnarl/s-taskin.ads b/gcc/ada/libgnarl/s-taskin.ads
index 5c03829f1e9..cf560b569fb 100644
--- a/gcc/ada/libgnarl/s-taskin.ads
+++ b/gcc/ada/libgnarl/s-taskin.ads
@@ -368,14 +368,6 @@ package System.Tasking is
-- Used to represent protected procedures to be executed when task
-- terminates.
- type Initialization_Handler is access procedure;
- pragma Favor_Top_Level (Initialization_Handler);
- -- Use to represent procedures to be executed at task initialization.
-
- Global_Initialization_Handler : Initialization_Handler := null;
- pragma Atomic (Global_Initialization_Handler);
- -- Global handler called when each task initializes.
-
------------------------------------
-- Dispatching domain definitions --
------------------------------------
diff --git a/gcc/ada/libgnarl/s-tassta.adb b/gcc/ada/libgnarl/s-tassta.adb
index 88850c24693..bbc7d14d5d8 100644
--- a/gcc/ada/libgnarl/s-tassta.adb
+++ b/gcc/ada/libgnarl/s-tassta.adb
@@ -35,6 +35,7 @@ pragma Partition_Elaboration_Policy (Concurrent);
with Ada.Exceptions;
with Ada.Unchecked_Deallocation;
+with Ada.Task_Initialization;
with System.Interrupt_Management;
with System.Tasking.Debug;
@@ -1177,6 +1178,14 @@ package body System.Tasking.Stages is
Debug.Signal_Debug_Event (Debug.Debug_Event_Run, Self_ID);
end if;
+ declare
+ use Ada.Task_Initialization;
+
+ Global_Initialization_Handler : Initialization_Handler;
+ pragma Atomic (Global_Initialization_Handler);
+ pragma Import (Ada, Global_Initialization_Handler,
+ "__gnat_global_initialization_handler");
+
begin
-- We are separating the following portion of the code in order to
-- place the exception handlers in a different block. In this way,
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