diff options
Diffstat (limited to 'arch/s390/kernel/entry64.S')
| -rw-r--r-- | arch/s390/kernel/entry64.S | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 3257f7f55551..7ff07d3a29c1 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -43,8 +43,7 @@ SP_R13 = STACK_FRAME_OVERHEAD + __PT_GPRS + 104 SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 112 SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 120 SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2 -SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC -SP_SVCNR = STACK_FRAME_OVERHEAD + __PT_SVCNR +SP_SVC_CODE = STACK_FRAME_OVERHEAD + __PT_SVC_CODE SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER @@ -250,7 +249,7 @@ sysc_saveall: SAVE_ALL_SVC __LC_SVC_OLD_PSW,__LC_SAVE_AREA CREATE_STACK_FRAME __LC_SAVE_AREA mvc SP_PSW(16,%r15),__LC_SVC_OLD_PSW - mvc SP_ILC(4,%r15),__LC_SVC_ILC + mvc SP_SVC_CODE(4,%r15),__LC_SVC_ILC lg %r12,__LC_THREAD_INFO # load pointer to thread_info struct sysc_vtime: UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER @@ -260,14 +259,14 @@ sysc_update: mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER LAST_BREAK sysc_do_svc: - llgh %r7,SP_SVCNR(%r15) + llgh %r7,SP_SVC_CODE+2(%r15) slag %r7,%r7,2 # shift and test for svc 0 jnz sysc_nr_ok # svc 0: system call number in %r1 llgfr %r1,%r1 # clear high word in r1 cghi %r1,NR_syscalls jnl sysc_nr_ok - sth %r1,SP_SVCNR(%r15) + sth %r1,SP_SVC_CODE+2(%r15) slag %r7,%r1,2 # shift and test for svc 0 sysc_nr_ok: larl %r10,sys_call_table @@ -358,11 +357,12 @@ sysc_notify_resume: # sysc_restart: ni __TI_flags+7(%r12),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC - lg %r7,SP_R2(%r15) # load new svc number - mvc SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument lmg %r2,%r6,SP_R2(%r15) # load svc arguments - sth %r7,SP_SVCNR(%r15) - slag %r7,%r7,2 + lghi %r7,0 # svc 0 returns -ENOSYS + lh %r1,SP_SVC_CODE+2(%r15) # load new svc number + cghi %r1,NR_syscalls + jnl sysc_nr_ok # invalid svc number -> do svc 0 + slag %r7,%r1,2 j sysc_nr_ok # restart svc # @@ -370,7 +370,7 @@ sysc_restart: # sysc_singlestep: ni __TI_flags+7(%r12),255-_TIF_PER_TRAP # clear TIF_PER_TRAP - xc SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number + xc SP_SVC_CODE(4,%r15),SP_SVC_CODE(%r15) # clear svc code la %r2,SP_PTREGS(%r15) # address of register-save area larl %r14,sysc_return # load adr. of system return jg do_per_trap @@ -382,7 +382,7 @@ sysc_singlestep: sysc_tracesys: la %r2,SP_PTREGS(%r15) # load pt_regs la %r3,0 - llgh %r0,SP_SVCNR(%r15) + llgh %r0,SP_SVC_CODE+2(%r15) stg %r0,SP_R2(%r15) brasl %r14,do_syscall_trace_enter lghi %r0,NR_syscalls @@ -470,7 +470,7 @@ ENTRY(pgm_check_handler) jnz pgm_per # got per exception -> special case SAVE_ALL_PGM __LC_PGM_OLD_PSW,__LC_SAVE_AREA CREATE_STACK_FRAME __LC_SAVE_AREA - xc SP_ILC(4,%r15),SP_ILC(%r15) + xc SP_SVC_CODE(4,%r15),SP_SVC_CODE(%r15) mvc SP_PSW(16,%r15),__LC_PGM_OLD_PSW lg %r12,__LC_THREAD_INFO # load pointer to thread_info struct HANDLE_SIE_INTERCEPT @@ -551,7 +551,7 @@ pgm_svcper: SAVE_ALL_PGM __LC_SVC_OLD_PSW,__LC_SAVE_AREA CREATE_STACK_FRAME __LC_SAVE_AREA mvc SP_PSW(16,%r15),__LC_SVC_OLD_PSW - mvc SP_ILC(4,%r15),__LC_SVC_ILC + mvc SP_SVC_CODE(4,%r15),__LC_SVC_ILC lg %r12,__LC_THREAD_INFO # load pointer to thread_info struct UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER @@ -571,7 +571,7 @@ pgm_svcper: # kernel_per: REENABLE_IRQS - xc SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number + xc SP_SVC_CODE(4,%r15),SP_SVC_CODE(%r15) # clear svc number la %r2,SP_PTREGS(%r15) # address of register-save area brasl %r14,do_per_trap j pgm_exit @@ -973,7 +973,7 @@ cleanup_system_call: stg %r11,0(%r12) CREATE_STACK_FRAME __LC_SAVE_AREA mvc SP_PSW(16,%r15),__LC_SVC_OLD_PSW - mvc SP_ILC(4,%r15),__LC_SVC_ILC + mvc SP_SVC_CODE(4,%r15),__LC_SVC_ILC mvc 8(8,%r12),__LC_THREAD_INFO cleanup_vtime: clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+24) |