toolchain/gcc: remove upstreamed patch, add backport

This patch has been upstream since GCC 10.
Dragan Mladjenovic (2):
      Emit .note.GNU-stack for soft-float linux targets.
      Emit .note.GNU-stack for hard-float linux targets.

Link: https://gcc.gnu.org/g:a3c1e1f2ff88
Link: https://gcc.gnu.org/g:54b3d52c3cca
Add backport patch to define TARGET_LIBC_GNUSTACK on musl to add
.note.GNU-stack on hard-float MIPS targets.

Link: https://gcc.gnu.org/g:25abbb924968
The net effect should be the exact same functionality while following
upstream code instead of a custom outdated patch.

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

diff --git a/toolchain/gcc/patches/11.2.0/011-v12-configure-define-TARGET_LIBC_GNUSTACK-on-musl.patch b/toolchain/gcc/patches/11.2.0/011-v12-configure-define-TARGET_LIBC_GNUSTACK-on-musl.patch
new file mode 100644 (file)
index 0000000..94105bd
--- /dev/null
+++ b/toolchain/gcc/patches/11.2.0/011-v12-configure-define-TARGET_LIBC_GNUSTACK-on-musl.patch
@@ -0,0 +1,46 @@
+From ea650cae26da4a8fc04f0c4666f4dd776d0b5fc0 Mon Sep 17 00:00:00 2001
+From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
+Date: Sun, 14 Nov 2021 21:54:25 -0800
+Subject: [PATCH] configure: define TARGET_LIBC_GNUSTACK on musl
+
+musl only uses PT_GNU_STACK to set default thread stack size and has no
+executable stack support[0], so there is no reason not to emit the
+.note.GNU-stack section on musl builds.
+
+[0]: https://lore.kernel.org/all/20190423192534.GN23599@brightrain.aerifal.cx/T/#u
+
+gcc/ChangeLog:
+
+       * configure: Regenerate.
+       * configure.ac: define TARGET_LIBC_GNUSTACK on musl
+
+Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
+---
+ gcc/configure    | 3 +++
+ gcc/configure.ac | 3 +++
+ 2 files changed, 6 insertions(+)
+
+--- a/gcc/configure
++++ b/gcc/configure
+@@ -30954,6 +30954,9 @@ fi
+ # Check if the target LIBC handles PT_GNU_STACK.
+ gcc_cv_libc_gnustack=unknown
+ case "$target" in
++  mips*-*-linux-musl*)
++    gcc_cv_libc_gnustack=yes
++    ;;
+   mips*-*-linux*)
+ 
+ if test $glibc_version_major -gt 2 \
+--- a/gcc/configure.ac
++++ b/gcc/configure.ac
+@@ -6788,6 +6788,9 @@ fi
+ # Check if the target LIBC handles PT_GNU_STACK.
+ gcc_cv_libc_gnustack=unknown
+ case "$target" in
++  mips*-*-linux-musl*)
++    gcc_cv_libc_gnustack=yes
++    ;;
+   mips*-*-linux*)
+     GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
+     ;;

diff --git a/toolchain/gcc/patches/11.2.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/11.2.0/930-fix-mips-noexecstack.patch
deleted file mode 100644 (file)
index 591dfe5..0000000
--- a/toolchain/gcc/patches/11.2.0/930-fix-mips-noexecstack.patch
+++ /dev/null
@@ -1,111 +0,0 @@
-From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
-From: Andrew McDonnell <bugs@andrewmcdonnell.net>
-Date: Fri, 3 Oct 2014 19:09:00 +0930
-Subject: Add .note.GNU-stack section
-
-See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
-Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
-
-Re: [Patch, MIPS] Add .note.GNU-stack section
-
-    From: Steve Ellcey <sellcey at mips dot com>
-
-On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
->
->
-> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
-
->         This works except you did not update the assembly files in
->         libgcc or glibc. We (Cavium) have the same patch in our tree
->         for a few released versions.
-
-> Mind just checking yours in then Andrew?
-
-> Thanks!
-> -eric
-
-I talked to Andrew about what files he changed in GCC and created and
-tested this new patch.  Andrew also mentioned changing some assembly
-files in glibc but I don't see any use of '.section .note.GNU-stack' in
-any assembly files in glibc (for any platform) so I wasn't planning on
-creating a glibc to add them to mips glibc assembly language files.
-
-OK to check in this patch?
-
-Steve Ellcey
-sellcey@mips.com
-
-
-
-2014-09-26  Steve Ellcey  <sellcey@mips.com>
----
- gcc/config/mips/mips.c          | 3 +++
- libgcc/config/mips/crti.S       | 4 ++++
- libgcc/config/mips/crtn.S       | 3 +++
- libgcc/config/mips/mips16.S     | 4 ++++
- libgcc/config/mips/vr4120-div.S | 4 ++++
- 5 files changed, 18 insertions(+)
-
---- a/gcc/config/mips/mips.c
-+++ b/gcc/config/mips/mips.c
-@@ -22890,6 +22890,9 @@ mips_asm_file_end (void)
- #define TARGET_ASM_FILE_END mips_asm_file_end
- 
- 
-+#undef TARGET_ASM_FILE_END
-+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
-+
- struct gcc_target targetm = TARGET_INITIALIZER;
- \f
- #include "gt-mips.h"
---- a/libgcc/config/mips/crti.S
-+++ b/libgcc/config/mips/crti.S
-@@ -24,6 +24,10 @@ see the files COPYING3 and COPYING.RUNTI
- /* An executable stack is *not* required for these functions.  */
- #include "gnustack.h"
- 
-+
-+/* An executable stack is *not* required for these functions.  */
-+      .section .note.GNU-stack,"",%progbits
-+
- /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
-    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
- 
---- a/libgcc/config/mips/crtn.S
-+++ b/libgcc/config/mips/crtn.S
-@@ -24,6 +24,9 @@ see the files COPYING3 and COPYING.RUNTI
- /* An executable stack is *not* required for these functions.  */
- #include "gnustack.h"
- 
-+/* An executable stack is *not* required for these functions.  */
-+      .section .note.GNU-stack,"",%progbits
-+
- /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
-    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
- 
---- a/libgcc/config/mips/mips16.S
-+++ b/libgcc/config/mips/mips16.S
-@@ -51,6 +51,10 @@ see the files COPYING3 and COPYING.RUNTI
-    values using the soft-float calling convention, but do the actual
-    operation using the hard floating point instructions.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+      .section .note.GNU-stack,"",%progbits
-+      .previous
-+
- #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
- 
- /* This file contains 32-bit assembly code.  */
---- a/libgcc/config/mips/vr4120-div.S
-+++ b/libgcc/config/mips/vr4120-div.S
-@@ -29,6 +29,10 @@ see the files COPYING3 and COPYING.RUNTI
-    -mfix-vr4120.  div and ddiv do not give the correct result when one
-    of the operands is negative.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+      .section .note.GNU-stack,"",%progbits
-+      .previous
-+
-       .set    nomips16
- 
- #define DIV                                                           \