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- /* Copyright (C) 2003, 2004 Red Hat, Inc.
- * Contributed by Alexandre Oliva <aoliva@redhat.com>
- * Copyright (C) 2006-2011 Analog Devices, Inc.
- * Based on ../i386/dl-sysdep.h
- *
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- */
- #define HAVE_DL_INLINES_H
- /*
- * Initialization sequence for a GOT. Copy the resolver function
- * descriptor and the pointer to the elf_resolve/link_map data
- * structure. Initialize the got_value in the module while at that.
- */
- #define INIT_GOT(GOT_BASE,MODULE) \
- { \
- (MODULE)->loadaddr.got_value = (GOT_BASE); \
- GOT_BASE[0] = ((unsigned long *)&_dl_linux_resolve)[0]; \
- GOT_BASE[1] = ((unsigned long *)&_dl_linux_resolve)[1]; \
- GOT_BASE[2] = (unsigned long) MODULE; \
- }
- struct elf_resolve;
- struct funcdesc_value
- {
- void *entry_point;
- void *got_value;
- } __attribute__((__aligned__(8)));
- struct funcdesc_ht;
- #define DL_LOADADDR_TYPE struct elf32_fdpic_loadaddr
- #define DL_RELOC_ADDR(LOADADDR, ADDR) \
- ((ElfW(Addr))__reloc_pointer ((void*)(ADDR), (LOADADDR).map))
- #define DL_ADDR_TO_FUNC_PTR(ADDR, LOADADDR) \
- ((void(*)(void)) _dl_funcdesc_for ((void*)(ADDR), (LOADADDR).got_value))
- #define _dl_stabilize_funcdesc(val) \
- ({ __asm__ ("" : "+m" (*(val))); (val); })
- #define DL_CALL_FUNC_AT_ADDR(ADDR, LOADADDR, SIGNATURE, ...) \
- ({ struct funcdesc_value fd = { (void*)(ADDR), (LOADADDR).got_value }; \
- void (*pf)(void) = (void*) _dl_stabilize_funcdesc (&fd); \
- (* SIGNATURE pf)(__VA_ARGS__); })
- #define DL_INIT_LOADADDR_BOOT(LOADADDR, BASEADDR) \
- (__dl_init_loadaddr_map (&(LOADADDR), dl_boot_got_pointer, \
- dl_boot_ldsomap ?: dl_boot_progmap))
- #define DL_INIT_LOADADDR_PROG(LOADADDR, BASEADDR) \
- (__dl_init_loadaddr_map (&(LOADADDR), 0, dl_boot_progmap))
- #define DL_INIT_LOADADDR_EXTRA_DECLS \
- int dl_init_loadaddr_load_count;
- #define DL_INIT_LOADADDR(LOADADDR, BASEADDR, PHDR, PHDRCNT) \
- (dl_init_loadaddr_load_count = \
- __dl_init_loadaddr (&(LOADADDR), (PHDR), (PHDRCNT)))
- #define DL_INIT_LOADADDR_HDR(LOADADDR, ADDR, PHDR) \
- (__dl_init_loadaddr_hdr ((LOADADDR), (ADDR), (PHDR), \
- dl_init_loadaddr_load_count))
- #define DL_UPDATE_LOADADDR_HDR(LOADADDR, ADDR, PHDR) \
- (__dl_update_loadaddr_hdr ((LOADADDR), (ADDR), (PHDR)))
- #define DL_LOADADDR_UNMAP(LOADADDR, LEN) \
- (__dl_loadaddr_unmap ((LOADADDR), (NULL)))
- #define DL_LIB_UNMAP(LIB, LEN) \
- (__dl_loadaddr_unmap ((LIB)->loadaddr, (LIB)->funcdesc_ht))
- #define DL_LOADADDR_BASE(LOADADDR) \
- ((LOADADDR).got_value)
- /* This is called from dladdr(), such that we map a function
- descriptor's address to the function's entry point before trying to
- find in which library it's defined. */
- #define DL_LOOKUP_ADDRESS(ADDRESS) (_dl_lookup_address (ADDRESS))
- #define DL_ADDR_IN_LOADADDR(ADDR, TPNT, TFROM) \
- (! (TFROM) && __dl_addr_in_loadaddr ((void*)(ADDR), (TPNT)->loadaddr))
- /*
- * Compute the GOT address. On several platforms, we use assembly
- * here. on FDPIC, there's no way to compute the GOT address,
- * since the offset between text and data is not fixed, so we arrange
- * for the ldso assembly entry point to pass this value as an argument
- * to _dl_start. */
- #define DL_BOOT_COMPUTE_GOT(got) ((got) = dl_boot_got_pointer)
- #define DL_BOOT_COMPUTE_DYN(dpnt, got, load_addr) \
- ((dpnt) = dl_boot_ldso_dyn_pointer)
- /* We want want to apply all relocations in the interpreter during
- bootstrap. Because of this, we have to skip the interpreter
- relocations in _dl_parse_relocation_information(), see
- elfinterp.c. */
- #define DL_SKIP_BOOTSTRAP_RELOC(SYMTAB, INDEX, STRTAB) 0
- #ifdef __NR_pread
- #define _DL_PREAD(FD, BUF, SIZE, OFFSET) \
- (_dl_pread((FD), (BUF), (SIZE), (OFFSET)))
- #endif
- /* We want to return to dlsym() a function descriptor if the symbol
- turns out to be a function. */
- #define DL_FIND_HASH_VALUE(TPNT, TYPE_CLASS, SYM) \
- (((TYPE_CLASS) & ELF_RTYPE_CLASS_DLSYM) \
- && ELF32_ST_TYPE((SYM)->st_info) == STT_FUNC \
- ? _dl_funcdesc_for ((void *)DL_RELOC_ADDR ((TPNT)->loadaddr, (SYM)->st_value), \
- (TPNT)->loadaddr.got_value) \
- : DL_RELOC_ADDR ((TPNT)->loadaddr, (SYM)->st_value))
- #define DL_GET_READY_TO_RUN_EXTRA_PARMS \
- , struct elf32_fdpic_loadmap *dl_boot_progmap, Elf32_Addr dl_boot_got_pointer
- #define DL_GET_READY_TO_RUN_EXTRA_ARGS \
- , dl_boot_progmap, dl_boot_got_pointer
- /* Define this to declare the library offset. */
- #define DL_DEF_LIB_OFFSET
- /* Define this to get the library offset. */
- #define DL_GET_LIB_OFFSET() 0
- /* Define this to set the library offset. */
- #define DL_SET_LIB_OFFSET(offset)
- /* Define this to get the real object's runtime address. */
- #define DL_GET_RUN_ADDR(loadaddr, mapaddr) (loadaddr)
- #ifdef __USE_GNU
- # include <link.h>
- #else
- # define __USE_GNU
- # include <link.h>
- # undef __USE_GNU
- #endif
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