2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1999, 2000 John D. Polstra.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef RTLD_MACHDEP_H
32 #define RTLD_MACHDEP_H 1
34 #include <sys/types.h>
35 #include <machine/atomic.h>
37 struct Struct_Obj_Entry;
39 /* Return the address of the .dynamic section in the dynamic linker. */
40 #define rtld_dynamic(obj) (&_DYNAMIC)
42 Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
43 const struct Struct_Obj_Entry *defobj, const struct Struct_Obj_Entry *obj,
45 void reloc_non_plt_self(Elf_Dyn *dynp, Elf_Addr relocbase);
47 #define make_function_pointer(def, defobj) \
48 ((defobj)->relocbase + (def)->st_value)
50 #define call_initfini_pointer(obj, target) \
51 (((InitFunc)(target))())
53 #define call_init_pointer(obj, target) \
54 (((InitArrFunc)(target))(main_argc, main_argv, environ))
56 extern u_long cpu_features; /* r3 */
57 extern u_long cpu_features2; /* r4 */
58 /* r5-10: ifunc resolver parameters reserved for future assignment. */
59 #define call_ifunc_resolver(ptr) \
60 (((Elf_Addr (*)(uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, \
61 uint32_t, uint32_t, uint32_t))ptr)((uint32_t)cpu_features, \
62 (uint32_t)cpu_features2, 0, 0, 0, 0, 0, 0))
65 * PLT functions. Not really correct prototypes, but the
66 * symbol values are needed.
68 void _rtld_powerpc_pltlongresolve(void);
69 void _rtld_powerpc_pltresolve(void);
70 void _rtld_powerpc_pltcall(void);
76 #define TLS_TP_OFFSET 0x7000
77 #define TLS_DTV_OFFSET 0x8000
78 #define TLS_TCB_SIZE 8
80 #define round(size, align) \
81 (((size) + (align) - 1) & ~((align) - 1))
82 #define calculate_first_tls_offset(size, align, offset) \
84 #define calculate_tls_offset(prev_offset, prev_size, size, align, offset) \
85 round(prev_offset + prev_size, align)
86 #define calculate_tls_end(off, size) ((off) + (size))
87 #define calculate_tls_post_size(align) 0
90 unsigned long ti_module;
91 unsigned long ti_offset;
94 extern void *__tls_get_addr(tls_index* ti);
96 #define RTLD_DEFAULT_STACK_PF_EXEC PF_X
97 #define RTLD_DEFAULT_STACK_EXEC PROT_EXEC
99 extern void powerpc_abi_variant_hook(Elf_Auxinfo **);
100 #define md_abi_variant_hook(x) powerpc_abi_variant_hook(x)