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| author | John David Anglin <danglin@gcc.gnu.org> | 2017-07-16 12:59:00 -0400 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2017-07-16 12:59:00 -0400 |
| commit | 1903b38c6599129d9c09d5cffc9ca7cbeb50b100 (patch) | |
| tree | e3dc14dc7218c471639cfc6330e5ba448d32adb5 | |
| parent | ce1917d0bf87f8d98c0891a85272c21bd0a46654 (diff) | |
| download | glibc-1903b38c6599129d9c09d5cffc9ca7cbeb50b100.tar.gz | |
Return to caller if dl_fixup fails to resolve callee on hppa.
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | sysdeps/hppa/dl-trampoline.S | 12 |
2 files changed, 15 insertions, 0 deletions
@@ -1,5 +1,8 @@ 2017-07-16 John David Anglin <danglin@gcc.gnu.org> + * sysdeps/hppa/dl-trampoline.S (_dl_runtime_resolve): Return to caller + if _dl_fixup fails. + * sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Add .cfi annotation. * sysdeps/unix/sysv/linux/hppa/getcontext.S (__getcontext): Likewise. * sysdeps/unix/sysv/linux/hppa/pt-vfork.S (__vfork): Likewise. diff --git a/sysdeps/hppa/dl-trampoline.S b/sysdeps/hppa/dl-trampoline.S index 856339bffe..f1294a931f 100644 --- a/sysdeps/hppa/dl-trampoline.S +++ b/sysdeps/hppa/dl-trampoline.S @@ -82,6 +82,11 @@ _dl_runtime_resolve: bl _dl_fixup,%rp copy %r21,%r19 /* set fixup func ltp */ + /* Sometimes a final executable may attempt to call an undefined + weak function (e.g., __gmon_start__). Return if the function + was not resolved by _dl_fixup */ + comib,= 0,%r28,1f + /* Load up the returned func descriptor */ copy %r28, %r22 copy %r29, %r19 @@ -107,6 +112,13 @@ _dl_runtime_resolve: /* Jump to new function, but return to previous function */ bv %r0(%r22) ldw -20(%sp),%rp + +1: + /* Return to previous function */ + ldw -148(%sp),%rp + bv %r0(%rp) + ldo -128(%sp),%sp + .EXIT .PROCEND cfi_endproc |