diff options
| author | Stefan Liebler <stli@linux.vnet.ibm.com> | 2017-06-19 11:06:49 +0200 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.vnet.ibm.com> | 2017-06-19 11:08:58 +0200 |
| commit | 5e5b3b886635b52d9baa87414b97965190035e46 (patch) | |
| tree | 33536154ee1f8a9bc68d7763e7deb48c7e3b7aee /sysdeps/s390 | |
| parent | 35810f5ccf735d8df0a783bc6ed5fbe455e64876 (diff) | |
S390: Fix build with gcc configured with --enable-default-pie. [BZ #21537]
Building glibc with gcc configured with --enable-default-pie failed on s390
due to assembler messages:
../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44:
Error: junk at end of line, first unrecognized character is `@'
HIDDEN_JUMPTARGET was expanded to exit@PLT@GOTOFF.
If SHARED is not defined, HIDDEN_JUMPTARGET is defined to JUMPTARGET
in sysdeps/s390/s390-32/sysdep.h. There it expanded to exit@PLT
in non SHARED case as PIC is defined if gcc is configured with
--enable-default-pie. Thus I've changed the "ifdef PIC" to "ifdef SHARED"
as we do not want PLTs in the static obj files. I've also changed this
in sysdeps/s390/s390-64/sysdep.h.
I've also adjusted sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S.
If glibc is configured with --disable-hidden-plt, then NO_HIDDEN is defined.
In SHARED case HIDDEN_JUMPTARGET would be expanded to exit@PLT@GOTOFF
instead of __GI_exit@GOTOFF.
Now we jump to:
- __GI_exit if SHARED is defined
- exit@PLT if SHARED and NO_HIDDEN is defined
- exit if both are not defined.
On s390 31bit we have to setup GOT pointer in r12 if we use a PLT stub.
Therefore I use SYSCALL_PIC_SETUP from sysdep.h and added the missing semicolons.
ChangeLog:
[BZ #21537]
* sysdeps/s390/s390-32/sysdep.h (JUMPTARGET, SYSCALL_PIC_SETUP):
Check SHARED instead of PIC.
(SYSCALL_PIC_SETUP): Add missing semicolons.
* sysdeps/s390/s390-64/sysdep.h (JUMPTARGET, SYSCALL_PIC_SETUP):
Check SHARED instead of PIC.
* sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S
(__makecontext_ret): Adjust code to jump to exit.
Diffstat (limited to 'sysdeps/s390')
| -rw-r--r-- | sysdeps/s390/s390-32/sysdep.h | 8 | ||||
| -rw-r--r-- | sysdeps/s390/s390-64/sysdep.h | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/sysdeps/s390/s390-32/sysdep.h b/sysdeps/s390/s390-32/sysdep.h index 15a4e3e687..60cf1e7f2e 100644 --- a/sysdeps/s390/s390-32/sysdep.h +++ b/sysdeps/s390/s390-32/sysdep.h @@ -82,14 +82,14 @@ lose: SYSCALL_PIC_SETUP \ END (name) #undef JUMPTARGET -#ifdef PIC +#ifdef SHARED #define JUMPTARGET(name) name##@PLT #define SYSCALL_PIC_SETUP \ - bras %r12,1f \ -0: .long _GLOBAL_OFFSET_TABLE_-0b \ + bras %r12,1f; \ +0: .long _GLOBAL_OFFSET_TABLE_-0b; \ 1: al %r12,0(%r12) #else -#define JUMPTARGET(name) name +#define JUMPTARGET(name) name #define SYSCALL_PIC_SETUP /* Nothing. */ #endif diff --git a/sysdeps/s390/s390-64/sysdep.h b/sysdeps/s390/s390-64/sysdep.h index a4dfc67178..419cd015ad 100644 --- a/sysdeps/s390/s390-64/sysdep.h +++ b/sysdeps/s390/s390-64/sysdep.h @@ -77,7 +77,7 @@ lose: SYSCALL_PIC_SETUP \ END (name) #undef JUMPTARGET -#ifdef PIC +#ifdef SHARED #define JUMPTARGET(name) name##@PLT #define SYSCALL_PIC_SETUP \ larl %r12,_GLOBAL_OFFSET_TABLE_ |