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-rw-r--r--config/coreboot/fam15h_rdimm/patches/0011-gcc-8.3.0_gnat_eh_new.patch232
1 files changed, 0 insertions, 232 deletions
diff --git a/config/coreboot/fam15h_rdimm/patches/0011-gcc-8.3.0_gnat_eh_new.patch b/config/coreboot/fam15h_rdimm/patches/0011-gcc-8.3.0_gnat_eh_new.patch
deleted file mode 100644
index 443d8512..00000000
--- a/config/coreboot/fam15h_rdimm/patches/0011-gcc-8.3.0_gnat_eh_new.patch
+++ /dev/null
@@ -1,232 +0,0 @@
-From c5a03de594d6bb6ea5012a6549404e4631c903c8 Mon Sep 17 00:00:00 2001
-From: Alexandre Oliva <oliva@adacore.com>
-Date: Wed, 9 Aug 2023 16:57:31 +0200
-Subject: [PATCH] crossgcc: Backport GNAT exception handler v1 patch
-
-Signed-off-by: Adrien Bourmault <neox@gnu.org>
----
- .../patches/gcc-8.3.0_gnat_eh_new.patch | 212 ++++++++++++++++++
- 1 file changed, 212 insertions(+)
- create mode 100644 util/crossgcc/patches/gcc-8.3.0_gnat_eh_new.patch
-
-diff --git a/util/crossgcc/patches/gcc-8.3.0_gnat_eh_new.patch b/util/crossgcc/patches/gcc-8.3.0_gnat_eh_new.patch
-new file mode 100644
-index 00000000..75e4f18d
---- /dev/null
-+++ b/util/crossgcc/patches/gcc-8.3.0_gnat_eh_new.patch
-@@ -0,0 +1,212 @@
-+diff --git a/gcc/ada/libgnat/a-exexpr.adb b/gcc/ada/libgnat/a-exexpr.adb
-+index b1aa1c6e6ba..5e72fd6e3f2 100644
-+--- a/gcc/ada/libgnat/a-exexpr.adb
-++++ b/gcc/ada/libgnat/a-exexpr.adb
-+@@ -197,15 +197,75 @@ package body Exception_Propagation is
-+ -- whose machine occurrence is Mo. The message is empty, the backtrace
-+ -- is empty too and the exception identity is Foreign_Exception.
-+
-+- -- Hooks called when entering/leaving an exception handler for a given
-+- -- occurrence, aimed at handling the stack of active occurrences. The
-+- -- calls are generated by gigi in tree_transform/N_Exception_Handler.
-++ -- Hooks called when entering/leaving an exception handler for a
-++ -- given occurrence. The calls are generated by gigi in
-++ -- Exception_Handler_to_gnu_gcc.
-++
-++ -- Begin_Handler_v1, called when entering an exception handler,
-++ -- claims responsibility for the handler to release the
-++ -- GCC_Exception occurrence. End_Handler_v1, called when
-++ -- leaving the handler, releases the occurrence, unless the
-++ -- occurrence is propagating further up, or the handler is
-++ -- dynamically nested in the context of another handler that
-++ -- claimed responsibility for releasing that occurrence.
-++
-++ -- Responsibility is claimed by changing the Cleanup field to
-++ -- Claimed_Cleanup, which enables claimed exceptions to be
-++ -- recognized, and avoids accidental releases even by foreign
-++ -- handlers.
-++
-++ function Begin_Handler_v1
-++ (GCC_Exception : not null GCC_Exception_Access)
-++ return System.Address;
-++ pragma Export (C, Begin_Handler_v1, "__gnat_begin_handler_v1");
-++ -- Called when entering an exception handler. Claim
-++ -- responsibility for releasing GCC_Exception, by setting the
-++ -- cleanup/release function to Claimed_Cleanup, and return the
-++ -- address of the previous cleanup/release function.
-++
-++ procedure End_Handler_v1
-++ (GCC_Exception : not null GCC_Exception_Access;
-++ Saved_Cleanup : System.Address;
-++ Propagating_Exception : GCC_Exception_Access);
-++ pragma Export (C, End_Handler_v1, "__gnat_end_handler_v1");
-++ -- Called when leaving an exception handler. Restore the
-++ -- Saved_Cleanup in the GCC_Exception occurrence, and then release
-++ -- it, unless it remains claimed by an enclosing handler, or
-++ -- GCC_Exception and Propagating_Exception are the same
-++ -- occurrence. Propagating_Exception could be either an
-++ -- occurrence (re)raised within the handler of GCC_Exception, when
-++ -- we're executing as an exceptional cleanup, or null, if we're
-++ -- completing the handler of GCC_Exception normally.
-++
-++ procedure Claimed_Cleanup
-++ (Reason : Unwind_Reason_Code;
-++ GCC_Exception : not null GCC_Exception_Access);
-++ pragma Export (C, Claimed_Cleanup, "__gnat_claimed_cleanup");
-++ -- A do-nothing placeholder installed as GCC_Exception.Cleanup
-++ -- while handling GCC_Exception, to claim responsibility for
-++ -- releasing it, and to stop it from being accidentally released.
-++
-++ -- The following are version 0 implementations of the version 1
-++ -- hooks above. They remain in place for compatibility with the
-++ -- output of compilers that still use version 0, such as those
-++ -- used during bootstrap. They are interoperable with the v1
-++ -- hooks, except that the older versions may malfunction when
-++ -- handling foreign exceptions passed to Reraise_Occurrence.
-+
-+ procedure Begin_Handler (GCC_Exception : not null GCC_Exception_Access);
-+ pragma Export (C, Begin_Handler, "__gnat_begin_handler");
-++ -- Called when entering an exception handler translated by an old
-++ -- compiler. It does nothing.
-+
-+ procedure End_Handler (GCC_Exception : GCC_Exception_Access);
-+ pragma Export (C, End_Handler, "__gnat_end_handler");
-++ -- Called when leaving an exception handler translated by an old
-++ -- compiler. It releases GCC_Exception, unless it is null. It is
-++ -- only ever null when the handler has a 'raise;' translated by a
-++ -- v0-using compiler. The artificial handler variable passed to
-++ -- End_Handler was set to null to tell End_Handler to refrain from
-++ -- releasing the reraised exception. In v1 safer ways are used to
-++ -- accomplish that.
-+
-+ --------------------------------------------------------------------
-+ -- Accessors to Basic Components of a GNAT Exception Data Pointer --
-+@@ -352,6 +412,128 @@ package body Exception_Propagation is
-+ end if;
-+ end Setup_Current_Excep;
-+
-++ ----------------------
-++ -- Begin_Handler_v1 --
-++ ----------------------
-++
-++ function Begin_Handler_v1
-++ (GCC_Exception : not null GCC_Exception_Access)
-++ return System.Address is
-++ Saved_Cleanup : constant System.Address := GCC_Exception.Cleanup;
-++ begin
-++ -- Claim responsibility for releasing this exception, and stop
-++ -- others from releasing it.
-++ GCC_Exception.Cleanup := Claimed_Cleanup'Address;
-++ return Saved_Cleanup;
-++ end Begin_Handler_v1;
-++
-++ --------------------
-++ -- End_Handler_v1 --
-++ --------------------
-++
-++ procedure End_Handler_v1
-++ (GCC_Exception : not null GCC_Exception_Access;
-++ Saved_Cleanup : System.Address;
-++ Propagating_Exception : GCC_Exception_Access) is
-++ begin
-++ GCC_Exception.Cleanup := Saved_Cleanup;
-++ -- Restore the Saved_Cleanup, so that it is either used to
-++ -- release GCC_Exception below, or transferred to the next
-++ -- handler of the Propagating_Exception occurrence. The
-++ -- following test ensures that an occurrence is only released
-++ -- once, even after reraises.
-++ --
-++ -- The idea is that the GCC_Exception is not to be released
-++ -- unless it had an unclaimed Cleanup when the handler started
-++ -- (see Begin_Handler_v1 above), but if we propagate across its
-++ -- handler a reraise of the same exception, we transfer to the
-++ -- Propagating_Exception the responsibility for running the
-++ -- Saved_Cleanup when its handler completes.
-++ --
-++ -- This ownership transfer mechanism ensures safety, as in
-++ -- single release and no dangling pointers, because there is no
-++ -- way to hold on to the Machine_Occurrence of an
-++ -- Exception_Occurrence: the only situations in which another
-++ -- Exception_Occurrence gets the same Machine_Occurrence are
-++ -- through Reraise_Occurrence, and plain reraise, and so we
-++ -- have the following possibilities:
-++ --
-++ -- - Reraise_Occurrence is handled within the running handler,
-++ -- and so when completing the dynamically nested handler, we
-++ -- must NOT release the exception. A Claimed_Cleanup upon
-++ -- entry of the nested handler, installed when entering the
-++ -- enclosing handler, ensures the exception will not be
-++ -- released by the nested handler, but rather by the enclosing
-++ -- handler.
-++ --
-++ -- - Reraise_Occurrence/reraise escapes the running handler,
-++ -- and we run as an exceptional cleanup for GCC_Exception. The
-++ -- Saved_Cleanup was reinstalled, but since we're propagating
-++ -- the same machine occurrence, we do not release it. Instead,
-++ -- we transfer responsibility for releasing it to the eventual
-++ -- handler of the propagating exception.
-++ --
-++ -- - An unrelated exception propagates through the running
-++ -- handler. We restored GCC_Exception.Saved_Cleanup above.
-++ -- Since we're propagating a different exception, we proceed to
-++ -- release GCC_Exception, unless Saved_Cleanup was
-++ -- Claimed_Cleanup, because then we know we're not in the
-++ -- outermost handler for GCC_Exception.
-++ --
-++ -- - The handler completes normally, so it reinstalls the
-++ -- Saved_Cleanup and runs it, unless it was Claimed_Cleanup.
-++ -- If Saved_Cleanup is null, Unwind_DeleteException (currently)
-++ -- has no effect, so we could skip it, but if it is ever
-++ -- changed to do more in this case, we're ready for that,
-++ -- calling it exactly once.
-++ if Saved_Cleanup /= Claimed_Cleanup'Address
-++ and then
-++ Propagating_Exception /= GCC_Exception
-++ then
-++ declare
-++ Current : constant EOA := Get_Current_Excep.all;
-++ Cur_Occ : constant GCC_Exception_Access
-++ := To_GCC_Exception (Current.Machine_Occurrence);
-++ begin
-++ -- If we are releasing the Machine_Occurrence of the current
-++ -- exception, reset the access to it, so that it is no
-++ -- longer accessible.
-++ if Cur_Occ = GCC_Exception then
-++ Current.Machine_Occurrence := System.Null_Address;
-++ end if;
-++ end;
-++ Unwind_DeleteException (GCC_Exception);
-++ end if;
-++ end End_Handler_v1;
-++
-++ ---------------------
-++ -- Claimed_Cleanup --
-++ ---------------------
-++
-++ procedure Claimed_Cleanup
-++ (Reason : Unwind_Reason_Code;
-++ GCC_Exception : not null GCC_Exception_Access) is
-++ pragma Unreferenced (Reason);
-++ pragma Unreferenced (GCC_Exception);
-++ begin
-++ -- This procedure should never run. If it does, it's either a
-++ -- version 0 handler or a foreign handler, attempting to
-++ -- release an exception while a version 1 handler that claimed
-++ -- responsibility for releasing the exception remains still
-++ -- active. This placeholder stops GCC_Exception from being
-++ -- released by them.
-++
-++ -- We could get away with just Null_Address instead, with
-++ -- nearly the same effect, but with this placeholder we can
-++ -- detect and report unexpected releases, and we can tell apart
-++ -- a GCC_Exception without a Cleanup, from one with another
-++ -- active handler, so as to still call Unwind_DeleteException
-++ -- exactly once: currently, Unwind_DeleteException does nothing
-++ -- when the Cleanup is null, but should it ever be changed to
-++ -- do more, we'll still be safe.
-++ null;
-++ end Claimed_Cleanup;
-++
-+ -------------------
-+ -- Begin_Handler --
-+ -------------------
---
-2.30.2
-