diff options
Diffstat (limited to 'ldso/ldso/mips/dl-sysdep.h')
| -rw-r--r-- | ldso/ldso/mips/dl-sysdep.h | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/ldso/ldso/mips/dl-sysdep.h b/ldso/ldso/mips/dl-sysdep.h index c3c5a6976..3f4672182 100644 --- a/ldso/ldso/mips/dl-sysdep.h +++ b/ldso/ldso/mips/dl-sysdep.h @@ -7,7 +7,7 @@ /* Define this if the system uses RELOCA. */ #undef ELF_USES_RELOCA - +#include <elf.h> #define ARCH_NUM 3 #define DT_MIPS_GOTSYM_IDX (DT_NUM + OS_NUM) #define DT_MIPS_LOCAL_GOTNO_IDX (DT_NUM + OS_NUM +1) @@ -71,3 +71,52 @@ void _dl_perform_mips_global_got_relocations(struct elf_resolve *tpnt, int lazy) #define elf_machine_type_class(type) ELF_RTYPE_CLASS_PLT /* MIPS does not have COPY relocs */ #define DL_NO_COPY_RELOCS + +#define OFFSET_GP_GOT 0x7ff0 + +static inline ElfW(Addr) * +elf_mips_got_from_gpreg (ElfW(Addr) gpreg) +{ + /* FIXME: the offset of gp from GOT may be system-dependent. */ + return (ElfW(Addr) *) (gpreg - OFFSET_GP_GOT); +} + +/* Return the link-time address of _DYNAMIC. Conveniently, this is the + first element of the GOT. This must be inlined in a function which + uses global data. We assume its $gp points to the primary GOT. */ +static inline ElfW(Addr) +elf_machine_dynamic (void) +{ + register ElfW(Addr) gp __asm__ ("$28"); + return *elf_mips_got_from_gpreg (gp); +} + +#define STRINGXP(X) __STRING(X) +#define STRINGXV(X) STRINGV_(X) +#define STRINGV_(...) # __VA_ARGS__ +#define PTR_LA la +#define PTR_SUBU subu + +/* Return the run-time load address of the shared object. */ +static inline ElfW(Addr) +elf_machine_load_address (void) +{ + ElfW(Addr) addr; + asm (" .set noreorder\n" + " " STRINGXP (PTR_LA) " %0, 0f\n" + " bltzal $0, 0f\n" + " nop\n" + "0: " STRINGXP (PTR_SUBU) " %0, $31, %0\n" + " .set reorder\n" + : "=r" (addr) + : /* No inputs */ + : "$31"); + return addr; +} + +static inline void +elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr, + Elf32_Word relative_count) +{ + /* No REALTIVE relocs in MIPS? */ +} |