* [COMMITTED] xtensa: add .note.GNU-stack section on linux
@ 2023-03-13 20:45 Max Filippov
0 siblings, 0 replies; only message in thread
From: Max Filippov @ 2023-03-13 20:45 UTC (permalink / raw)
To: gcc-patches; +Cc: Max Filippov
gcc/
* config/xtensa/linux.h (TARGET_ASM_FILE_END): New macro.
libgcc/
* config/xtensa/crti.S: Add .note.GNU-stack section on linux.
* config/xtensa/crtn.S: Likewise.
* config/xtensa/lib1funcs.S: Likewise.
* config/xtensa/lib2funcs.S: Likewise.
---
gcc/config/xtensa/linux.h | 2 ++
libgcc/config/xtensa/crti.S | 6 ++++++
libgcc/config/xtensa/crtn.S | 6 ++++++
libgcc/config/xtensa/lib1funcs.S | 6 ++++++
libgcc/config/xtensa/lib2funcs.S | 6 ++++++
5 files changed, 26 insertions(+)
diff --git a/gcc/config/xtensa/linux.h b/gcc/config/xtensa/linux.h
index dc4d547fc5fd..e684e7deebf9 100644
--- a/gcc/config/xtensa/linux.h
+++ b/gcc/config/xtensa/linux.h
@@ -69,3 +69,5 @@ along with GCC; see the file COPYING3. If not see
#define XTENSA_ALWAYS_PIC 1
#undef DEBUGGER_REGNO
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
diff --git a/libgcc/config/xtensa/crti.S b/libgcc/config/xtensa/crti.S
index b88df50207b6..637203500c41 100644
--- a/libgcc/config/xtensa/crti.S
+++ b/libgcc/config/xtensa/crti.S
@@ -26,6 +26,12 @@
#include "xtensa-config-builtin.h"
+/* An executable stack is *not* required for these functions. */
+#if defined(__ELF__) && defined(__linux__)
+.section .note.GNU-stack,"",%progbits
+.previous
+#endif
+
.section .init
.globl _init
.type _init,@function
diff --git a/libgcc/config/xtensa/crtn.S b/libgcc/config/xtensa/crtn.S
index 7f271660f942..15c13ea03d0d 100644
--- a/libgcc/config/xtensa/crtn.S
+++ b/libgcc/config/xtensa/crtn.S
@@ -27,6 +27,12 @@
#include "xtensa-config-builtin.h"
+/* An executable stack is *not* required for these functions. */
+#if defined(__ELF__) && defined(__linux__)
+.section .note.GNU-stack,"",%progbits
+.previous
+#endif
+
.section .init
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
retw
diff --git a/libgcc/config/xtensa/lib1funcs.S b/libgcc/config/xtensa/lib1funcs.S
index a3f17b6b2cbc..5baf2df1d20e 100644
--- a/libgcc/config/xtensa/lib1funcs.S
+++ b/libgcc/config/xtensa/lib1funcs.S
@@ -25,6 +25,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#include "xtensa-config-builtin.h"
+/* An executable stack is *not* required for these functions. */
+#if defined(__ELF__) && defined(__linux__)
+.section .note.GNU-stack,"",%progbits
+.previous
+#endif
+
/* Define macros for the ABS and ADDX* instructions to handle cases
where they are not included in the Xtensa processor configuration. */
diff --git a/libgcc/config/xtensa/lib2funcs.S b/libgcc/config/xtensa/lib2funcs.S
index e038e41eb6f1..992f712238c4 100644
--- a/libgcc/config/xtensa/lib2funcs.S
+++ b/libgcc/config/xtensa/lib2funcs.S
@@ -25,6 +25,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#include "xtensa-config-builtin.h"
+/* An executable stack is *not* required for these functions. */
+#if defined(__ELF__) && defined(__linux__)
+.section .note.GNU-stack,"",%progbits
+.previous
+#endif
+
/* __xtensa_libgcc_window_spill: This function flushes out all but the
current register window. This is used to set up the stack so that
arbitrary frames can be accessed. */
--
2.30.2
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