diff options
Diffstat (limited to 'sysdeps/sparc/sparc64')
| -rw-r--r-- | sysdeps/sparc/sparc64/dl-machine.h | 16 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/strncmp.S | 11 |
2 files changed, 22 insertions, 5 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: diff --git a/sysdeps/sparc/sparc64/strncmp.S b/sysdeps/sparc/sparc64/strncmp.S index 3bc21d6664..31fcfeee08 100644 --- a/sysdeps/sparc/sparc64/strncmp.S +++ b/sysdeps/sparc/sparc64/strncmp.S @@ -290,14 +290,15 @@ ENTRY(strncmp) ldxa [%o0] ASI_PNF, %g4 /* Load */ 11: sllx %g3, 3, %g5 /* IEU0 Group */ mov 64, %g7 /* IEU1 */ - sub %o1, %g3, %o1 /* IEU0 Group */ + or %g1, %g2, %g1 /* IEU0 Group */ + sub %o1, %g3, %o1 /* IEU1 */ - sub %g7, %g5, %g7 /* IEU1 */ + sub %g7, %g5, %g7 /* IEU0 Group */ ldxa [%o1] ASI_PNF, %o4 /* Load */ - sllx %g1, 7, %g2 /* IEU0 Group */ - add %o1, 8, %o1 /* IEU1 */ + sllx %g1, 7, %g2 /* IEU1 */ + add %o1, 8, %o1 /* IEU0 Group */ /* %g1 = 0101010101010101 - %g2 = 8080808080800880 + %g2 = 8080808080808080 %g3 = %o1 alignment %g5 = number of bits to shift left %g7 = number of bits to shift right */ |