diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/dl-machine.h')
| -rw-r--r-- | sysdeps/sparc/sparc64/dl-machine.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h index 4ced7deef8..fba323dece 100644 --- a/sysdeps/sparc/sparc64/dl-machine.h +++ b/sysdeps/sparc/sparc64/dl-machine.h @@ -39,6 +39,18 @@ elf_machine_matches_host (const Elf64_Ehdr *ehdr) return ehdr->e_machine == EM_SPARCV9; } +/* We have to do this because elf_machine_{dynamic,load_address} can be + invoked from functions that have no GOT references, and thus the compiler + has no obligation to load the PIC register. */ +#define LOAD_PIC_REG(PIC_REG) \ +do { Elf64_Addr tmp; \ + __asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \ + "rd %%pc, %0\n\t" \ + "add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t" \ + "add %0, %1, %0" \ + : "=r" (PIC_REG), "=r" (tmp)); \ +} while (0) + /* 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. */ @@ -47,6 +59,8 @@ elf_machine_dynamic (void) { register Elf64_Addr *elf_pic_register __asm__("%l7"); + LOAD_PIC_REG (elf_pic_register); + return *elf_pic_register; } @@ -56,6 +70,8 @@ elf_machine_load_address (void) { register Elf64_Addr *elf_pic_register __asm__("%l7"); + LOAD_PIC_REG (elf_pic_register); + /* We used to utilize the fact that a local .got entry will be partially initialized at startup awaiting its RELATIVE fixup: |