diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S index e9bd8cb960..777ead80b0 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S @@ -38,11 +38,13 @@ ENTRY (__clone) beq- cr0,L(badargs) /* Save some regs in the "red zone". */ +#ifdef USE_PPC_SCV std r28,-32(r1) + cfi_offset(r28,-32) +#endif std r29,-24(r1) std r30,-16(r1) std r31,-8(r1) - cfi_offset(r28,-32) cfi_offset(r29,-24) cfi_offset(r30,-16) cfi_offset(r31,-8) @@ -71,6 +73,7 @@ ENTRY (__clone) /* Do the call. */ li r0,SYS_ify(clone) +#ifdef USE_PPC_SCV CHECK_SCV_SUPPORT r28 0f /* This is equivalent to DO_CALL_SCV, but we cannot use the macro here because it uses CFI directives and we just called cfi_endproc. */ @@ -87,6 +90,7 @@ ENTRY (__clone) /* When using scv, error is indicated by negative r3. */ cmpdi cr1,r3,0 b 1f +#endif /* USE_PPC_SCV */ 0: DO_CALL_SC /* Check for child process. */ @@ -119,22 +123,26 @@ L(parent): cmpdi cr1,r28,0 /* Parent. Restore registers & return. */ +#ifdef USE_PPC_SCV cfi_offset(r28,-32) + ld r28,-32(r1) + cfi_restore(r28) +#endif cfi_offset(r29,-24) cfi_offset(r30,-16) cfi_offset(r31,-8) - ld r28,-32(r1) ld r29,-24(r1) ld r30,-16(r1) ld r31,-8(r1) - cfi_restore(r28) cfi_restore(r29) cfi_restore(r30) cfi_restore(r31) +#ifdef USE_PPC_SCV beq cr1,0f RET_SCV b 1f +#endif 0: RET_SC 1: TAIL_CALL_SYSCALL_ERROR |