http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54209
--- Comment #4 from chaoyingfu at gcc dot gnu.org <chaoyingfu at gcc dot
gnu.org> 2012-08-09 18:45:41 UTC ---
(In reply to comment #3)
> (In reply to comment #2)
> > MIPS provides a version of link.h in Android NDK as follows:
> > Ex:
> > From android-ndk-r8b/platforms/android-9/arch-mips/usr/include# cat link.h
> > /*
> > For building unwind-dw2-fde-glibc.c for MIPS frame unwinding,
> > we need to have <link.h> that defines struct dl_phdr_info,
> > ELFW(type), and dl_iterate_phdr().
> > */
> >
> > #include <sys/types.h>
> > #include <elf.h>
> >
> > struct dl_phdr_info
> > {
> > Elf32_Addr dlpi_addr;
> > const char *dlpi_name;
> > const Elf32_Phdr *dlpi_phdr;
> > Elf32_Half dlpi_phnum;
> > };
> >
> > #if _MIPS_SZPTR == 32
> > #define ElfW(type) Elf32_##type
> > #elif _MIPS_SZPTR == 64
> > #define ElfW(type) Elf64_##type
> > #endif
> >
> > int
> > dl_iterate_phdr(int (*cb)(struct dl_phdr_info *info, size_t size, void
> > *data),
> > void *data);
> >
> > For x86, you can create link.h as well. Or we can guard this define with
> > MIPS targets.
>
> Why isn't link.h in AOSP Bionic C library?
ARM doesn't use eh_frame, so there is no need to create link.h at the
beginning for the Android project, I guess. For MIPS, we create our own link.h
to work with eh_frame unwinding. Thanks!
