From: Christophe Lyon Date: Tue, 10 Sep 2019 07:43:37 +0000 (+0200) Subject: [ARM/FDPIC v6 05/24] [ARM] FDPIC: Fix __do_global_dtors_aux and frame_dummy generation X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=11189793b6ef60645d5d1126d0bd9d0dd83e6583;p=gcc.git [ARM/FDPIC v6 05/24] [ARM] FDPIC: Fix __do_global_dtors_aux and frame_dummy generation 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 Mickaël Guêné libgcc/ * libgcc/crtstuff.c: Add support for FDPIC. Co-Authored-By: Mickaël Guêné From-SVN: r275567 --- diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 7696452b1d8..bb411298aa3 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,6 +1,11 @@ 2019-09-10 Christophe Lyon + Mickaël Guêné - * config.host: Handle *-*-uclinuxfdpiceabi. + * libgcc/crtstuff.c: Add support for FDPIC. + +2019-09-10 Christophe Lyon + + * config.host: Handle *-*-uclinuxfdpiceabi. 2019-09-09 Jose E. Marchesi diff --git a/libgcc/crtstuff.c b/libgcc/crtstuff.c index c8a8e2c87a5..c93e1cbcaca 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__("\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 */