[multiple changes]
2009-07-27 Robert Dewar <dewar@adacore.com> * sem_util.adb, sem_util.ads (Kill_Current_Values): Reset Is_Known_Valid 2009-07-27 Javier Miranda <miranda@adacore.com> * exp_disp.adb (Expand_Dispatching_Call): Reverse previous patch and add some documentation explaining why the SCIL nodes must be generated at that point. 2009-07-27 Olivier Hainque <hainque@adacore.com> * a-except.adb: Bind to __builtin_longjmp directly. * a-except-2005.ads: Provide direct binding to __builtin_longjmp for sjlj variants. * a-exexpr.adb: Use it. * a-except-xi.adb: Likewise. * raise.c (_gnat_builtin_longjmp): Remove and update comments. * raise.h (_gnat_builtin_longjmp): Remove declaration. From-SVN: r150119
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Arnaud Charlet
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57036dccfc
commit
cff7cd9b13
@ -1,3 +1,23 @@
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2009-07-27 Robert Dewar <dewar@adacore.com>
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* sem_util.adb, sem_util.ads (Kill_Current_Values): Reset Is_Known_Valid
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2009-07-27 Javier Miranda <miranda@adacore.com>
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* exp_disp.adb (Expand_Dispatching_Call): Reverse previous patch and
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add some documentation explaining why the SCIL nodes must be generated
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at that point.
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2009-07-27 Olivier Hainque <hainque@adacore.com>
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* a-except.adb: Bind to __builtin_longjmp directly.
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* a-except-2005.ads: Provide direct binding to __builtin_longjmp
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for sjlj variants.
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* a-exexpr.adb: Use it.
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* a-except-xi.adb: Likewise.
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* raise.c (_gnat_builtin_longjmp): Remove and update comments.
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* raise.h (_gnat_builtin_longjmp): Remove declaration.
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2009-07-27 Ed Schonberg <schonberg@adacore.com>
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* sem_eval.adb (Compile_Time_Compare): More precise handling of
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@ -50,6 +50,8 @@ with System.Parameters;
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with System.Standard_Library;
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with System.Traceback_Entries;
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with Ada.Unchecked_Conversion;
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package Ada.Exceptions is
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pragma Warnings (Off);
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pragma Preelaborate_05;
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@ -348,4 +350,18 @@ private
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Tracebacks => (others => TBE.Null_TB_Entry),
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Private_Data => System.Null_Address);
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-- Common binding to __builtin_longjmp for sjlj variants.
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-- The builtin expects a pointer type for the jmpbuf address argument, and
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-- System.Address doesn't work because this is really an integer type.
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type Jmpbuf_Address is access Character;
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function To_Jmpbuf_Address is new
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Ada.Unchecked_Conversion (System.Address, Jmpbuf_Address);
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procedure builtin_longjmp (buffer : Jmpbuf_Address; Flag : Integer);
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pragma No_Return (builtin_longjmp);
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pragma Import (Intrinsic, builtin_longjmp, "__builtin_longjmp");
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end Ada.Exceptions;
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@ -41,10 +41,6 @@ pragma Warnings (Off);
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separate (Ada.Exceptions)
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package body Exception_Propagation is
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procedure builtin_longjmp (buffer : Address; Flag : Integer);
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pragma No_Return (builtin_longjmp);
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pragma Import (C, builtin_longjmp, "_gnat_builtin_longjmp");
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---------------------
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-- Setup_Exception --
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---------------------
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@ -114,7 +110,7 @@ package body Exception_Propagation is
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Exception_Traces.Notify_Handled_Exception;
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end if;
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builtin_longjmp (Jumpbuf_Ptr, 1);
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builtin_longjmp (To_Jmpbuf_Address (Jumpbuf_Ptr), 1);
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else
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Exception_Traces.Notify_Unhandled_Exception;
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@ -643,6 +643,20 @@ package body Exp_Disp is
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Typ := Non_Limited_View (Typ);
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end if;
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-- Generate the SCIL node for this dispatching call. The SCIL node for a
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-- dispatching call is inserted in the tree before the call is rewriten
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-- and expanded because the SCIL node must be found by the SCIL backend
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-- BEFORE the expanded nodes associated with the call node are found.
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if Generate_SCIL then
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Insert_Action (Call_Node,
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New_SCIL_Node
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(SN_Kind => Dispatching_Call,
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Related_Node => Call_Node,
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Entity => Typ,
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Target_Prim => Subp));
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end if;
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if not Is_Limited_Type (Typ) then
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Eq_Prim_Op := Find_Prim_Op (Typ, Name_Op_Eq);
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end if;
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@ -866,17 +880,6 @@ package body Exp_Disp is
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-- to avoid the generation of spurious warnings under ZFP run-time.
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Analyze_And_Resolve (Call_Node, Call_Typ, Suppress => All_Checks);
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-- Generate the SCIL node for this dispatching call
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if Generate_SCIL then
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Insert_Action (Call_Node,
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New_SCIL_Node
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(SN_Kind => Dispatching_Call,
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Related_Node => Call_Node,
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Entity => Typ,
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Target_Prim => Subp));
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end if;
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end Expand_Dispatching_Call;
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---------------------------------
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@ -29,11 +29,8 @@
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* *
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****************************************************************************/
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/* Shared routines to support exception handling.
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Note that _gnat_builtin_longjmp should disappear at some point, replaced
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by direct call to __builtin_longjmp from Ada code.
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__gnat_unhandled_terminate is code shared between all exception handling
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mechanisms */
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/* Shared routines to support exception handling. __gnat_unhandled_terminate
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is shared between all exception handling mechanisms. */
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#ifdef IN_RTS
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#include "tconfig.h"
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@ -46,13 +43,19 @@
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#include "adaint.h"
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#include "raise.h"
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/* We have not yet figured out how to import this directly */
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/* Wrapper to builtin_longjmp. This is for the compiler eh only, as the sjlj
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runtime library interfaces directly to the intrinsic. We can't yet do
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this for the compiler itself, because this capability relies on changes
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made in april 2008 and we need to preserve the possibility to bootstrap
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with an older base version. */
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#if defined (IN_GCC) && !defined (IN_RTS)
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void
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_gnat_builtin_longjmp (void *ptr, int flag ATTRIBUTE_UNUSED)
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{
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__builtin_longjmp (ptr, 1);
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}
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#endif
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/* When an exception is raised for which no handler exists, the procedure
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Ada.Exceptions.Unhandled_Exception is called, which performs the call to
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@ -7142,19 +7142,33 @@ package body Sem_Util is
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Last_Assignment_Only : Boolean := False)
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is
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begin
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-- ??? do we have to worry about clearing cached checks?
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if Is_Assignable (Ent) then
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Set_Last_Assignment (Ent, Empty);
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end if;
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if not Last_Assignment_Only and then Is_Object (Ent) then
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Kill_Checks (Ent);
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Set_Current_Value (Ent, Empty);
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if Is_Object (Ent) then
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if not Last_Assignment_Only then
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Kill_Checks (Ent);
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Set_Current_Value (Ent, Empty);
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if not Can_Never_Be_Null (Ent) then
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Set_Is_Known_Non_Null (Ent, False);
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if not Can_Never_Be_Null (Ent) then
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Set_Is_Known_Non_Null (Ent, False);
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end if;
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Set_Is_Known_Null (Ent, False);
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-- Reset Is_Known_Valid unless type is always valid, or if we have
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-- a loop parameter (loop parameters are always valid, since their
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-- bounds are defined by the bounds given in the loop header).
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if not Is_Known_Valid (Etype (Ent))
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and then Ekind (Ent) /= E_Loop_Parameter
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then
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Set_Is_Known_Valid (Ent, False);
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end if;
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end if;
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Set_Is_Known_Null (Ent, False);
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end if;
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end Kill_Current_Values;
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@ -820,9 +820,9 @@ package Sem_Util is
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-- clear the Is_True_Constant flag, since that only gets reset if there
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-- really is an assignment somewhere in the entity scope). This procedure
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-- also calls Kill_All_Checks, since this is a special case of needing to
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-- forget saved values. This procedure also clears Is_Known_Non_Null flags
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-- in variables, constants or parameters since these are also not known to
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-- be valid.
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-- forget saved values. This procedure also clears the Is_Known_Null and
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-- Is_Known_Non_Null and Is_Known_Valid flags in variables, constants or
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-- parameters since these are also not known to be trustable any more.
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--
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-- The Last_Assignment_Only flag is set True to clear only Last_Assignment
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-- fields and leave other fields unchanged. This is used when we encounter
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@ -839,8 +839,8 @@ package Sem_Util is
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Last_Assignment_Only : Boolean := False);
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-- This performs the same processing as described above for the form with
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-- no argument, but for the specific entity given. The call has no effect
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-- if the entity Ent is not for an object. Again, Last_Assignment_Only is
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-- set if you want to clear only the Last_Assignment field (see above).
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-- if the entity Ent is not for an object. Last_Assignment_Only has the
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-- same meaning as for the call with no Ent.
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procedure Kill_Size_Check_Code (E : Entity_Id);
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-- Called when an address clause or pragma Import is applied to an entity.
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