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* [gcc r12-3750] [Ada] bindgen: support additional features on targets suppressing the standard lib
@ 2021-09-21 15:27 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2021-09-21 15:27 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:0df911d9056437a79cf40fc643c49fced56574bd
commit r12-3750-g0df911d9056437a79cf40fc643c49fced56574bd
Author: Patrick Bernardi <bernardi@adacore.com>
Date: Fri Jul 9 20:29:04 2021 +1000
[Ada] bindgen: support additional features on targets suppressing the standard lib
gcc/ada/
* bindgen.adb (Gen_Adainit): For targets that suppress the
standard library: set the default stack size global variable if
a value is provided via the -d switch, and generate a call to
__gnat_initialize_stack_limit if stack checking using stack
limits is enabled.
Diff:
---
gcc/ada/bindgen.adb | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/gcc/ada/bindgen.adb b/gcc/ada/bindgen.adb
index 0014f6a46da..049038b96e4 100644
--- a/gcc/ada/bindgen.adb
+++ b/gcc/ada/bindgen.adb
@@ -588,6 +588,27 @@ package body Bindgen is
WBI ("");
end if;
+ -- Import the default stack object if a size has been provided to the
+ -- binder.
+
+ if Opt.Default_Stack_Size /= Opt.No_Stack_Size then
+ WBI (" Default_Stack_Size : Integer;");
+ WBI (" pragma Import (C, Default_Stack_Size, " &
+ """__gl_default_stack_size"");");
+ end if;
+
+ -- Initialize stack limit variable of the environment task if the
+ -- stack check method is stack limit and stack check is enabled.
+
+ if Stack_Check_Limits_On_Target
+ and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set)
+ then
+ WBI ("");
+ WBI (" procedure Initialize_Stack_Limit;");
+ WBI (" pragma Import (C, Initialize_Stack_Limit, " &
+ """__gnat_initialize_stack_limit"");");
+ end if;
+
if System_Secondary_Stack_Package_In_Closure then
-- System.Secondary_Stack is in the closure of the program
-- because the program uses the secondary stack or the restricted
@@ -619,6 +640,15 @@ package body Bindgen is
WBI (" begin");
+ -- Set the default stack size if provided to the binder
+
+ if Opt.Default_Stack_Size /= Opt.No_Stack_Size then
+ Set_String (" Default_Stack_Size := ");
+ Set_Int (Default_Stack_Size);
+ Set_String (";");
+ Write_Statement_Buffer;
+ end if;
+
if Main_Priority /= No_Main_Priority then
Set_String (" Main_Priority := ");
Set_Int (Main_Priority);
@@ -643,6 +673,7 @@ package body Bindgen is
end if;
if Main_Priority = No_Main_Priority
+ and then Opt.Default_Stack_Size = Opt.No_Stack_Size
and then Main_CPU = No_Main_CPU
and then not System_Tasking_Restricted_Stages_Used
then
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