From: <christophe.lyon@st.com>
To: <gcc-patches@gcc.gnu.org>
Cc: <christophe.lyon@linaro.org>
Subject: [ARM/FDPIC v2 05/21] [ARM] FDPIC: Fix __do_global_dtors_aux and frame_dummy generation
Date: Fri, 13 Jul 2018 16:13:00 -0000 [thread overview]
Message-ID: <20180713161136.29104-6-christophe.lyon@st.com> (raw)
In-Reply-To: <20180713161136.29104-1-christophe.lyon@st.com>
From: Christophe Lyon <christophe.lyon@linaro.org>
In FDPIC, we need to make sure __do_global_dtors_aux and frame_dummy
are referenced by their address, not by pointers to the function
descriptors.
2018-XX-XX Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
* libgcc/crtstuff.c: Add support for FDPIC.
Change-Id: Iff3aec3815e8ebd87276c0107752f00908a22100
diff --git a/libgcc/crtstuff.c b/libgcc/crtstuff.c
index d81c527..ad40719 100644
--- a/libgcc/crtstuff.c
+++ b/libgcc/crtstuff.c
@@ -429,9 +429,17 @@ __do_global_dtors_aux (void)
#ifdef FINI_SECTION_ASM_OP
CRT_CALL_STATIC_FUNCTION (FINI_SECTION_ASM_OP, __do_global_dtors_aux)
#elif defined (FINI_ARRAY_SECTION_ASM_OP)
+#if defined(__FDPIC__)
+__asm__(
+ " .section .fini_array\n"
+ " .word __do_global_dtors_aux\n"
+);
+asm (TEXT_SECTION_ASM_OP);
+#else /* defined(__FDPIC__) */
static func_ptr __do_global_dtors_aux_fini_array_entry[]
__attribute__ ((__used__, section(".fini_array"), aligned(sizeof(func_ptr))))
= { __do_global_dtors_aux };
+#endif /* defined(__FDPIC__) */
#else /* !FINI_SECTION_ASM_OP && !FINI_ARRAY_SECTION_ASM_OP */
static void __attribute__((used))
__do_global_dtors_aux_1 (void)
@@ -473,9 +481,17 @@ frame_dummy (void)
#ifdef __LIBGCC_INIT_SECTION_ASM_OP__
CRT_CALL_STATIC_FUNCTION (__LIBGCC_INIT_SECTION_ASM_OP__, frame_dummy)
#else /* defined(__LIBGCC_INIT_SECTION_ASM_OP__) */
+#if defined(__FDPIC__)
+__asm__(
+ " .section .init_array\n"
+ " .word frame_dummy\n"
+);
+asm (TEXT_SECTION_ASM_OP);
+#else /* defined(__FDPIC__) */
static func_ptr __frame_dummy_init_array_entry[]
__attribute__ ((__used__, section(".init_array"), aligned(sizeof(func_ptr))))
= { frame_dummy };
+#endif /* defined(__FDPIC__) */
#endif /* !defined(__LIBGCC_INIT_SECTION_ASM_OP__) */
#endif /* USE_EH_FRAME_REGISTRY || USE_TM_CLONE_REGISTRY */
--
2.6.3
next prev parent reply other threads:[~2018-07-13 16:13 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-13 16:12 [ARM/FDPIC v2 00/21] FDPIC ABI for ARM christophe.lyon
2018-07-13 16:12 ` [ARM/FDPIC v2 01/21] [ARM] FDPIC: Add -mfdpic option support christophe.lyon
2018-08-29 10:46 ` Kyrill Tkachov
2018-08-31 14:09 ` Christophe Lyon
2018-09-21 15:41 ` Christophe Lyon
2018-07-13 16:12 ` [ARM/FDPIC v2 02/21] [ARM] FDPIC: Handle arm*-*-uclinuxfdpiceabi in configure scripts christophe.lyon
2018-08-29 10:46 ` Kyrill Tkachov
2018-08-31 14:13 ` Christophe Lyon
2018-09-09 8:16 ` Christophe Lyon
2018-07-13 16:13 ` [ARM/FDPIC v2 03/21] [ARM] FDPIC: Force FDPIC related options unless -mno-fdpic is provided christophe.lyon
2018-07-13 16:13 ` [ARM/FDPIC v2 04/21] [ARM] FDPIC: Add support for FDPIC for arm architecture christophe.lyon
2018-08-29 10:46 ` Kyrill Tkachov
2018-09-04 15:29 ` Richard Earnshaw (lists)
2018-09-05 12:07 ` Christophe Lyon
2018-07-13 16:13 ` christophe.lyon [this message]
2018-07-13 16:14 ` [ARM/FDPIC v2 06/21] [ARM] FDPIC: Add support for c++ exceptions christophe.lyon
2018-08-29 10:49 ` Kyrill Tkachov
2018-07-13 16:14 ` [ARM/FDPIC v2 07/21] [ARM] FDPIC: Avoid saving/restoring r9 on stack since it is RO christophe.lyon
2018-08-29 10:52 ` Kyrill Tkachov
2018-07-13 16:14 ` [ARM/FDPIC v2 08/21] [ARM] FDPIC: Ensure local/global binding for function descriptors christophe.lyon
2018-07-13 16:15 ` [ARM/FDPIC v2 10/21] [ARM] FDPIC: Implement TLS support christophe.lyon
2018-07-13 16:15 ` [ARM/FDPIC v2 09/21] [ARM] FDPIC: Add support for taking address of nested function christophe.lyon
2018-08-29 11:01 ` Kyrill Tkachov
2018-08-31 14:17 ` Christophe Lyon
2018-07-13 16:15 ` [ARM/FDPIC v2 11/21] [ARM] FDPIC: Add support to unwind FDPIC signal frame christophe.lyon
2018-07-13 16:16 ` [ARM/FDPIC v2 13/21] [ARM] FDPIC: Force LSB bit for PC in Cortex-M architecture christophe.lyon
2018-07-13 16:16 ` [ARM/FDPIC v2 12/21] [ARM] FDPIC: Restore r9 after we call __aeabi_read_tp christophe.lyon
2018-07-13 16:16 ` [ARM/FDPIC v2 14/21] [ARM][testsuite] FDPIC: Skip unsupported tests christophe.lyon
2018-07-13 16:17 ` [ARM/FDPIC v2 15/21] [ARM][testsuite] FDPIC: Adjust scan-assembler patterns christophe.lyon
2018-07-13 16:17 ` [ARM/FDPIC v2 16/21] [ARM][testsuite] FDPIC: Skip v8-m and v6-m tests that currently produce an ICE christophe.lyon
2018-07-13 16:17 ` [ARM/FDPIC v2 17/21] [ARM][testsuite] FDPIC: Skip tests that don't work in PIC mode christophe.lyon
2018-07-13 16:18 ` [ARM/FDPIC v2 18/21] [ARM][testsuite] FDPIC: Handle *-*-uclinux* christophe.lyon
2018-07-13 16:18 ` [ARM/FDPIC v2 20/21] [ARM][testsuite] FDPIC: Adjust pr43698.c to avoid clash with uclibc christophe.lyon
2018-07-13 16:18 ` [ARM/FDPIC v2 19/21] [ARM][testsuite] FDPIC: Enable tests on pie_enabled targets christophe.lyon
2018-07-13 16:19 ` [ARM/FDPIC v2 21/21] [ARM][testsuite] FDPIC: Skip tests using architecture older than v7 christophe.lyon
2018-08-01 14:03 ` [ARM/FDPIC v2 00/21] FDPIC ABI for ARM Christophe Lyon
2018-08-16 22:20 ` Christophe Lyon
2018-08-28 16:09 ` Christophe Lyon
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