1b9dea67fSPeter Grehan /*- 2b9dea67fSPeter Grehan * Copyright (c) 1999, 2000 John D. Polstra. 3b9dea67fSPeter Grehan * All rights reserved. 4b9dea67fSPeter Grehan * 5b9dea67fSPeter Grehan * Redistribution and use in source and binary forms, with or without 6b9dea67fSPeter Grehan * modification, are permitted provided that the following conditions 7b9dea67fSPeter Grehan * are met: 8b9dea67fSPeter Grehan * 1. Redistributions of source code must retain the above copyright 9b9dea67fSPeter Grehan * notice, this list of conditions and the following disclaimer. 10b9dea67fSPeter Grehan * 2. Redistributions in binary form must reproduce the above copyright 11b9dea67fSPeter Grehan * notice, this list of conditions and the following disclaimer in the 12b9dea67fSPeter Grehan * documentation and/or other materials provided with the distribution. 13b9dea67fSPeter Grehan * 14b9dea67fSPeter Grehan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15b9dea67fSPeter Grehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16b9dea67fSPeter Grehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17b9dea67fSPeter Grehan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18b9dea67fSPeter Grehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19b9dea67fSPeter Grehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20b9dea67fSPeter Grehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21b9dea67fSPeter Grehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22b9dea67fSPeter Grehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23b9dea67fSPeter Grehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24b9dea67fSPeter Grehan * SUCH DAMAGE. 25b9dea67fSPeter Grehan * 26b9dea67fSPeter Grehan * $FreeBSD$ 27b9dea67fSPeter Grehan */ 28b9dea67fSPeter Grehan 29b9dea67fSPeter Grehan #ifndef RTLD_MACHDEP_H 30b9dea67fSPeter Grehan #define RTLD_MACHDEP_H 1 31b9dea67fSPeter Grehan 326d5d786fSAlexander Kabaev #include <sys/types.h> 33b9dea67fSPeter Grehan #include <machine/atomic.h> 34b9dea67fSPeter Grehan 35b9dea67fSPeter Grehan struct Struct_Obj_Entry; 36b9dea67fSPeter Grehan 37b9dea67fSPeter Grehan /* Return the address of the .dynamic section in the dynamic linker. */ 38b9dea67fSPeter Grehan #define rtld_dynamic(obj) (&_DYNAMIC) 39b9dea67fSPeter Grehan 40b9dea67fSPeter Grehan Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target, 41b9dea67fSPeter Grehan const struct Struct_Obj_Entry *defobj, 42b9dea67fSPeter Grehan const struct Struct_Obj_Entry *obj, 43b9dea67fSPeter Grehan const Elf_Rel *rel); 44b9dea67fSPeter Grehan 45b9dea67fSPeter Grehan #define make_function_pointer(def, defobj) \ 46b9dea67fSPeter Grehan ((defobj)->relocbase + (def)->st_value) 47b9dea67fSPeter Grehan 48b9dea67fSPeter Grehan #define call_initfini_pointer(obj, target) \ 49b9dea67fSPeter Grehan (((InitFunc)(target))()) 50b9dea67fSPeter Grehan 5183aa9cc0SKonstantin Belousov #define call_init_pointer(obj, target) \ 5283aa9cc0SKonstantin Belousov (((InitArrFunc)(target))(main_argc, main_argv, environ)) 5383aa9cc0SKonstantin Belousov 544352999eSKonstantin Belousov #define call_ifunc_resolver(ptr) \ 554352999eSKonstantin Belousov (((Elf_Addr (*)(void))ptr)()) 564352999eSKonstantin Belousov 57b9dea67fSPeter Grehan /* 58b9dea67fSPeter Grehan * Lazy binding entry point, called via PLT. 59b9dea67fSPeter Grehan */ 60b9dea67fSPeter Grehan void _rtld_bind_start(void); 61b9dea67fSPeter Grehan 62b9dea67fSPeter Grehan /* 63b9dea67fSPeter Grehan * PLT functions. Not really correct prototypes, but the 64b9dea67fSPeter Grehan * symbol values are needed. 65b9dea67fSPeter Grehan */ 664f2730f7SNathan Whitehorn void _rtld_powerpc_pltlongresolve(void); 67b9dea67fSPeter Grehan void _rtld_powerpc_pltresolve(void); 68b9dea67fSPeter Grehan void _rtld_powerpc_pltcall(void); 69b9dea67fSPeter Grehan 706c2a9753SSuleiman Souhlal /* 716c2a9753SSuleiman Souhlal * TLS 726c2a9753SSuleiman Souhlal */ 736c2a9753SSuleiman Souhlal 746c2a9753SSuleiman Souhlal #define TLS_TP_OFFSET 0x7000 756c2a9753SSuleiman Souhlal #define TLS_DTV_OFFSET 0x8000 766c2a9753SSuleiman Souhlal #define TLS_TCB_SIZE 8 776c2a9753SSuleiman Souhlal 78fca32c74SDoug Rabson #define round(size, align) \ 79fca32c74SDoug Rabson (((size) + (align) - 1) & ~((align) - 1)) 80fca32c74SDoug Rabson #define calculate_first_tls_offset(size, align) \ 81fca32c74SDoug Rabson round(8, align) 82fca32c74SDoug Rabson #define calculate_tls_offset(prev_offset, prev_size, size, align) \ 83fca32c74SDoug Rabson round(prev_offset + prev_size, align) 84fca32c74SDoug Rabson #define calculate_tls_end(off, size) ((off) + (size)) 85fca32c74SDoug Rabson 86fca32c74SDoug Rabson typedef struct { 87fca32c74SDoug Rabson unsigned long ti_module; 88fca32c74SDoug Rabson unsigned long ti_offset; 89fca32c74SDoug Rabson } tls_index; 90fca32c74SDoug Rabson 91fca32c74SDoug Rabson extern void *__tls_get_addr(tls_index* ti); 92fca32c74SDoug Rabson 93cb38d494SKonstantin Belousov #define RTLD_DEFAULT_STACK_PF_EXEC PF_X 94cb38d494SKonstantin Belousov #define RTLD_DEFAULT_STACK_EXEC PROT_EXEC 95cb38d494SKonstantin Belousov 968fd53f45SWarner Losh #define md_abi_variant_hook(x) 978fd53f45SWarner Losh 98b9dea67fSPeter Grehan #endif 99