diff options
Diffstat (limited to 'ldso/ldso/c6x/dl-inlines.h')
-rw-r--r-- | ldso/ldso/c6x/dl-inlines.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/ldso/ldso/c6x/dl-inlines.h b/ldso/ldso/c6x/dl-inlines.h new file mode 100644 index 000000000..d8fb42c55 --- /dev/null +++ b/ldso/ldso/c6x/dl-inlines.h @@ -0,0 +1,91 @@ +/* Copyright (C) 2010 Texas Instruments Incorporated + * Contributed by Mark Salter <msalter@redhat.com> + * + * Borrowed heavily from frv arch: + * Copyright (C) 2003, 2004 Red Hat, Inc. + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Figure out whether the given address is in one of the mapped + segments. */ +static __always_inline int +__dl_addr_in_loadaddr (void *p, struct elf32_dsbt_loadaddr loadaddr) +{ + struct elf32_dsbt_loadmap *map = loadaddr.map; + int c; + + for (c = 0; c < map->nsegs; c++) + if ((void*)map->segs[c].addr <= p + && (char*)p < (char*)map->segs[c].addr + map->segs[c].p_memsz) + return 1; + + return 0; +} + +/* Figure out how many LOAD segments there are in the given headers, + and allocate a block for the load map big enough for them. + got_value will be properly initialized later on, with INIT_GOT. */ +static __always_inline int +__dl_init_loadaddr (struct elf32_dsbt_loadaddr *loadaddr, Elf32_Phdr *ppnt, + int pcnt) +{ + int count = 0, i; + size_t size; + + for (i = 0; i < pcnt; i++) + if (ppnt[i].p_type == PT_LOAD) + count++; + + size = sizeof (struct elf32_dsbt_loadmap) + + sizeof (struct elf32_dsbt_loadseg) * count; + loadaddr->map = _dl_malloc (size); + if (! loadaddr->map) + _dl_exit (-1); + + loadaddr->map->version = 0; + loadaddr->map->nsegs = 0; + + return count; +} + +/* Incrementally initialize a load map. */ +static __always_inline void +__dl_init_loadaddr_hdr (struct elf32_dsbt_loadaddr loadaddr, void *addr, + Elf32_Phdr *phdr, int maxsegs) +{ + struct elf32_dsbt_loadseg *segdata; + + if (loadaddr.map->nsegs == maxsegs) + _dl_exit (-1); + + segdata = &loadaddr.map->segs[loadaddr.map->nsegs++]; + segdata->addr = (Elf32_Addr) addr; + segdata->p_vaddr = phdr->p_vaddr; + segdata->p_memsz = phdr->p_memsz; + +#if defined (__SUPPORT_LD_DEBUG__) + { + if (_dl_debug) + _dl_dprintf(_dl_debug_file, "%i: mapped %x at %x, size %x\n", + loadaddr.map->nsegs-1, + segdata->p_vaddr, segdata->addr, segdata->p_memsz); + } +#endif +} + +static __always_inline void +__dl_loadaddr_unmap (struct elf32_dsbt_loadaddr loadaddr) +{ + int i; + + for (i = 0; i < loadaddr.map->nsegs; i++) + _dl_munmap ((void*)loadaddr.map->segs[i].addr, + loadaddr.map->segs[i].p_memsz); + + /* _dl_unmap is only called for dlopen()ed libraries, for which + calling free() is safe, or before we've completed the initial + relocation, in which case calling free() is probably pointless, + but still safe. */ + _dl_free (loadaddr.map); +} |