diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/s390/s390-32/dl-trampoline.S | 16 |
2 files changed, 16 insertions, 5 deletions
diff --git a/ChangeLog b/ChangeLog index fa98152d6d..18645d0997 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2013-02-21 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> + + * sysdeps/s390/s390-32/dl-trampoline.S (_dl_runtime_profile): Do a + tail-call to the resolved function if pltexit isn't needed. + 2013-02-21 Siddhesh Poyarekar <siddhesh@redhat.com> * sysdeps/powerpc/powerpc32/power4/fpu/mpa.c (__mul): Mark X diff --git a/sysdeps/s390/s390-32/dl-trampoline.S b/sysdeps/s390/s390-32/dl-trampoline.S index 2846d845c0..1ae43cbbc5 100644 --- a/sysdeps/s390/s390-32/dl-trampoline.S +++ b/sysdeps/s390/s390-32/dl-trampoline.S @@ -95,16 +95,16 @@ _dl_runtime_profile: lr %r1,%r2 # function addr returned in r2 icm %r0,15,20(%r12) # load & test framesize jnm 2f + lm %r2,%r6,32(%r12) ld %f0,56(%r12) ld %f2,64(%r12) - basr %r14,%r1 # call resolved function -1: lr %r15,%r12 # remove stack frame + lr %r15,%r12 # remove stack frame cfi_def_cfa_register (15) l %r14,16(%r15) # restore registers l %r12,12(%r15) - l %r6,8(%r15) - br %r14 + br %r1 # tail-call to the resolved function + cfi_def_cfa_register (12) 2: jz 4f # framesize == 0 ? ahi %r0,7 # align framesize to 8 @@ -131,7 +131,13 @@ _dl_runtime_profile: la %r4,32(%r12) # pointer to struct La_s390_32_regs la %r5,72(%r12) # pointer to struct La_s390_32_retval basr %r14,%r1 # call _dl_call_pltexit - j 1b + + lr %r15,%r12 # remove stack frame + cfi_def_cfa_register (15) + l %r14,16(%r15) # restore registers + l %r12,12(%r15) + br %r14 + 6: .long _dl_profile_fixup - 0b 7: .long _dl_call_pltexit - 5b cfi_endproc |