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[ARM/FDPIC v6 05/24] [ARM] FDPIC: Fix __do_global_dtors_aux and frame_dummy generation

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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.

2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
	Mickaël Guêné <mickael.guene@st.com>

	libgcc/
	* libgcc/crtstuff.c: Add support for FDPIC.


Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>

From-SVN: r275567
This commit is contained in:
Christophe Lyon 2019-09-10 09:43:37 +02:00 committed by Christophe Lyon
parent 8b63716e87
commit 11189793b6
2 changed files with 22 additions and 1 deletions
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7
libgcc/ChangeLog
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@ -1,6 +1,11 @@
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
Mickaël Guêné <mickael.guene@st.com>
* libgcc/crtstuff.c: Add support for FDPIC.
2019-09-10 Christophe Lyon <christophe.lyon@st.com>
* config.host: Handle *-*-uclinuxfdpiceabi.
* config.host: Handle *-*-uclinuxfdpiceabi.
2019-09-09 Jose E. Marchesi <jose.marchesi@oracle.com>

16
libgcc/crtstuff.c
View File

@ -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__("\t.equ\t__do_global_dtors_aux_alias, __do_global_dtors_aux\n");
extern char __do_global_dtors_aux_alias;
static void *__do_global_dtors_aux_fini_array_entry[]
__attribute__ ((__used__, section(".fini_array"), aligned(sizeof(void *))))
= { &__do_global_dtors_aux_alias };
#else /* defined(__FDPIC__) */
static func_ptr __do_global_dtors_aux_fini_array_entry[]
__attribute__ ((__used__, section(".fini_array"),
aligned(__alignof__(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__("\t.equ\t__frame_dummy_alias, frame_dummy\n");
extern char __frame_dummy_alias;
static void *__frame_dummy_init_array_entry[]
__attribute__ ((__used__, section(".init_array"), aligned(sizeof(void *))))
= { &__frame_dummy_alias };
#else /* defined(__FDPIC__) */
static func_ptr __frame_dummy_init_array_entry[]
__attribute__ ((__used__, section(".init_array"),
aligned(__alignof__(func_ptr)))) = { frame_dummy };
#endif /* defined(__FDPIC__) */
#endif /* !defined(__LIBGCC_INIT_SECTION_ASM_OP__) */
#endif /* USE_EH_FRAME_REGISTRY || USE_TM_CLONE_REGISTRY */