/*
- * ia64/kernel/entry.S
+ * arch/ia64/kernel/entry.S
*
* Kernel entry points.
*
* pNonSys: !pSys
*/
-#include <linux/config.h>
#include <asm/asmmacro.h>
#include <asm/cache.h>
#include <asm/errno.h>
#include <asm/kregs.h>
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
#include <asm/pgtable.h>
#include <asm/percpu.h>
#include <asm/processor.h>
(p6) br.cond.dpnt .map
;;
.done:
-(p6) ssm psr.ic // if we had to map, reenable the psr.ic bit FIRST!!!
- ;;
-(p6) srlz.d
ld8 sp=[r21] // load kernel stack pointer of new task
mov IA64_KR(CURRENT)=in0 // update "current" application register
mov r8=r13 // return pointer to previously running task
mov IA64_KR(CURRENT_STACK)=r26 // remember last page we mapped...
;;
itr.d dtr[r25]=r23 // wire in new mapping...
+ ssm psr.ic // reenable the psr.ic bit
+ ;;
+ srlz.d
br.cond.sptk .done
END(ia64_switch_to)
br.cond.sptk.many b7
END(load_switch_stack)
-GLOBAL_ENTRY(execve)
+GLOBAL_ENTRY(prefetch_stack)
+ add r14 = -IA64_SWITCH_STACK_SIZE, sp
+ add r15 = IA64_TASK_THREAD_KSP_OFFSET, in0
+ ;;
+ ld8 r16 = [r15] // load next's stack pointer
+ lfetch.fault.excl [r14], 128
+ ;;
+ lfetch.fault.excl [r14], 128
+ lfetch.fault [r16], 128
+ ;;
+ lfetch.fault.excl [r14], 128
+ lfetch.fault [r16], 128
+ ;;
+ lfetch.fault.excl [r14], 128
+ lfetch.fault [r16], 128
+ ;;
+ lfetch.fault.excl [r14], 128
+ lfetch.fault [r16], 128
+ ;;
+ lfetch.fault [r16], 128
+ br.ret.sptk.many rp
+END(prefetch_stack)
+
+GLOBAL_ENTRY(kernel_execve)
mov r15=__NR_execve // put syscall number in place
break __BREAK_SYSCALL
br.ret.sptk.many rp
-END(execve)
+END(kernel_execve)
GLOBAL_ENTRY(clone)
mov r15=__NR_clone // put syscall number in place
.mem.offset 0,0; st8.spill [r2]=r8 // store return value in slot for r8
.mem.offset 8,0; st8.spill [r3]=r10 // clear error indication in slot for r10
br.call.sptk.many rp=syscall_trace_leave // give parent a chance to catch return value
-.ret3: br.cond.sptk .work_pending_syscall_end
+.ret3:
+(pUStk) cmp.eq.unc p6,p0=r0,r0 // p6 <- pUStk
+ br.cond.sptk .work_pending_syscall_end
strace_error:
ld8 r3=[r2] // load pt_regs.r8
ld8.fill r15=[r3] // M0|1 restore r15
mov b6=r18 // I0 restore b6
- addl r17=THIS_CPU(ia64_phys_stacked_size_p8),r0 // A
+ LOAD_PHYS_STACK_REG_SIZE(r17)
mov f9=f0 // F clear f9
(pKStk) br.cond.dpnt.many skip_rbs_switch // B
shr.u r18=r19,16 // I0|1 get byte size of existing "dirty" partition
cover // B add current frame into dirty partition & set cr.ifs
;;
-(pUStk) ld4 r17=[r17] // M0|1 r17 = cpu_data->phys_stacked_size_p8
mov r19=ar.bsp // M2 get new backing store pointer
mov f10=f0 // F clear f10
shr.u r18=r19,16 // get byte size of existing "dirty" partition
;;
mov r16=ar.bsp // get existing backing store pointer
- addl r17=THIS_CPU(ia64_phys_stacked_size_p8),r0
- ;;
- ld4 r17=[r17] // r17 = cpu_data->phys_stacked_size_p8
+ LOAD_PHYS_STACK_REG_SIZE(r17)
(pKStk) br.cond.dpnt skip_rbs_switch
/*
st8 [r2]=r8
st8 [r3]=r10
.work_pending:
- tbit.nz p6,p0=r31,TIF_SIGDELAYED // signal delayed from MCA/INIT/NMI/PMI context?
-(p6) br.cond.sptk.few .sigdelayed
- ;;
tbit.z p6,p0=r31,TIF_NEED_RESCHED // current_thread_info()->need_resched==0?
(p6) br.cond.sptk.few .notify
#ifdef CONFIG_PREEMPT
(pLvSys)br.cond.sptk.few .work_pending_syscall_end
br.cond.sptk.many .work_processed_kernel // don't re-check
-// There is a delayed signal that was detected in MCA/INIT/NMI/PMI context where
-// it could not be delivered. Deliver it now. The signal might be for us and
-// may set TIF_SIGPENDING, so redrive ia64_leave_* after processing the delayed
-// signal.
-
-.sigdelayed:
- br.call.sptk.many rp=do_sigdelayed
- cmp.eq p6,p0=r0,r0 // p6 <- 1, always re-check
-(pLvSys)br.cond.sptk.few .work_pending_syscall_end
- br.cond.sptk.many .work_processed_kernel // re-check
-
.work_pending_syscall_end:
adds r2=PT(R8)+16,r12
adds r3=PT(R10)+16,r12
br.ret.sptk.many rp
END(notify_resume_user)
-GLOBAL_ENTRY(sys_rt_sigsuspend)
- .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
- alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs in case of syscall restart!
- mov r9=ar.unat
- mov loc0=rp // save return address
- mov out0=in0 // mask
- mov out1=in1 // sigsetsize
- adds out2=8,sp // out2=&sigscratch->ar_pfs
- ;;
- .fframe 16
- .spillsp ar.unat, 16
- st8 [sp]=r9,-16 // allocate space for ar.unat and save it
- st8 [out2]=loc1,-8 // save ar.pfs, out2=&sigscratch
- .body
- br.call.sptk.many rp=ia64_rt_sigsuspend
-.ret17: .restore sp
- adds sp=16,sp // pop scratch stack space
- ;;
- ld8 r9=[sp] // load new unat from sw->caller_unat
- mov rp=loc0
- ;;
- mov ar.unat=r9
- mov ar.pfs=loc1
- br.ret.sptk.many rp
-END(sys_rt_sigsuspend)
-
ENTRY(sys_rt_sigreturn)
PT_REGS_UNWIND_INFO(0)
/*
data8 sys_mq_timedreceive // 1265
data8 sys_mq_notify
data8 sys_mq_getsetattr
- data8 sys_ni_syscall // reserved for kexec_load
+ data8 sys_kexec_load
data8 sys_ni_syscall // reserved for vserver
data8 sys_waitid // 1270
data8 sys_add_key
data8 sys_keyctl
data8 sys_ioprio_set
data8 sys_ioprio_get // 1275
- data8 sys_set_zone_reclaim
+ data8 sys_move_pages
data8 sys_inotify_init
data8 sys_inotify_add_watch
data8 sys_inotify_rm_watch
+ data8 sys_migrate_pages // 1280
+ data8 sys_openat
+ data8 sys_mkdirat
+ data8 sys_mknodat
+ data8 sys_fchownat
+ data8 sys_futimesat // 1285
+ data8 sys_newfstatat
+ data8 sys_unlinkat
+ data8 sys_renameat
+ data8 sys_linkat
+ data8 sys_symlinkat // 1290
+ data8 sys_readlinkat
+ data8 sys_fchmodat
+ data8 sys_faccessat
+ data8 sys_pselect6
+ data8 sys_ppoll
+ data8 sys_unshare
+ data8 sys_splice
+ data8 sys_set_robust_list
+ data8 sys_get_robust_list
+ data8 sys_sync_file_range // 1300
+ data8 sys_tee
+ data8 sys_vmsplice
+ data8 sys_fallocate
+ data8 sys_getcpu
+ data8 sys_epoll_pwait // 1305
+ data8 sys_utimensat
+ data8 sys_signalfd
+ data8 sys_timerfd
+ data8 sys_eventfd
.org sys_call_table + 8*NR_syscalls // guard against failures to increase NR_syscalls
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff