diff options
Diffstat (limited to 'arch/s390/kernel/vdso64/vdso_user_wrapper.S')
| -rw-r--r-- | arch/s390/kernel/vdso64/vdso_user_wrapper.S | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/arch/s390/kernel/vdso64/vdso_user_wrapper.S b/arch/s390/kernel/vdso64/vdso_user_wrapper.S deleted file mode 100644 index aa06c85bcbd3..000000000000 --- a/arch/s390/kernel/vdso64/vdso_user_wrapper.S +++ /dev/null @@ -1,52 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#include <linux/linkage.h> -#include <asm/vdso.h> -#include <asm/unistd.h> -#include <asm/asm-offsets.h> -#include <asm/dwarf.h> -#include <asm/ptrace.h> - -/* - * Older glibc version called vdso without allocating a stackframe. This wrapper - * is just used to allocate a stackframe. See - * https://sourceware.org/git/?p=glibc.git;a=commit;h=478593e6374f3818da39332260dc453cb19cfa1e - * for details. - */ -.macro vdso_func func -SYM_FUNC_START(__kernel_\func) - CFI_STARTPROC - aghi %r15,-STACK_FRAME_VDSO_OVERHEAD - CFI_DEF_CFA_OFFSET (STACK_FRAME_USER_OVERHEAD + STACK_FRAME_VDSO_OVERHEAD) - CFI_VAL_OFFSET 15,-STACK_FRAME_USER_OVERHEAD - stg %r14,__SFVDSO_RETURN_ADDRESS(%r15) - CFI_REL_OFFSET 14,__SFVDSO_RETURN_ADDRESS - xc __SFUSER_BACKCHAIN(8,%r15),__SFUSER_BACKCHAIN(%r15) - brasl %r14,__s390_vdso_\func - lg %r14,__SFVDSO_RETURN_ADDRESS(%r15) - CFI_RESTORE 14 - aghi %r15,STACK_FRAME_VDSO_OVERHEAD - CFI_DEF_CFA_OFFSET STACK_FRAME_USER_OVERHEAD - CFI_RESTORE 15 - br %r14 - CFI_ENDPROC -SYM_FUNC_END(__kernel_\func) -.endm - -vdso_func gettimeofday -vdso_func clock_getres -vdso_func clock_gettime -vdso_func getcpu - -.macro vdso_syscall func,syscall -SYM_FUNC_START(__kernel_\func) - CFI_STARTPROC - svc \syscall - /* Make sure we notice when a syscall returns, which shouldn't happen */ - .word 0 - CFI_ENDPROC -SYM_FUNC_END(__kernel_\func) -.endm - -vdso_syscall restart_syscall,__NR_restart_syscall -vdso_syscall sigreturn,__NR_sigreturn -vdso_syscall rt_sigreturn,__NR_rt_sigreturn |