Changes in 4.9.233 xfs: catch inode allocation state mismatch corruption xfs: validate cached inodes are free when allocated xfs: don't call xfs_da_shrink_inode with NULL bp net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_mdio_probe() crypto: ccp - Release all allocated memory if sha type is invalid media: rc: prevent memory leak in cx23888_ir_probe ath9k_htc: release allocated buffer if timed out ath9k: release allocated buffer if timed out PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge ARM: 8986/1: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl() drm: hold gem reference until object is no longer accessed f2fs: check memory boundary by insane namelen f2fs: check if file namelen exceeds max value 9p/trans_fd: abort p9_read_work if req status changed 9p/trans_fd: Fix concurrency del of req_list in p9_fd_cancelled/p9_read_work x86/build/lto: Fix truncated .bss with -fdata-sections x86, vmlinux.lds: Page-align end of ..page_aligned sections fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins. rds: Prevent kernel-infoleak in rds_notify_queue_get() xfs: fix missed wakeup on l_flush_wait uapi: includes linux/types.h before exporting files install several missing uapi headers net/x25: Fix x25_neigh refcnt leak when x25 disconnect net/x25: Fix null-ptr-deref in x25_disconnect sh: Fix validation of system call number net: lan78xx: add missing endpoint sanity check net: lan78xx: fix transfer-buffer memory leak mlx4: disable device on shutdown mlxsw: core: Increase scope of RCU read-side critical section mlxsw: core: Free EMAD transactions using kfree_rcu() ibmvnic: Fix IRQ mapping disposal in error path mac80211: mesh: Free ie data when leaving mesh mac80211: mesh: Free pending skb when destroying a mpath arm64: csum: Fix handling of bad packets usb: hso: Fix debug compile warning on sparc32 qed: Disable "MFW indication via attention" SPAM every 5 minutes nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame parisc: add support for cmpxchg on u8 pointers net: ethernet: ravb: exit if re-initialization fails in tx timeout Revert "i2c: cadence: Fix the hold bit setting" xen-netfront: fix potential deadlock in xennet_remove() KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled x86/i8259: Use printk_deferred() to prevent deadlock random32: update the net random state on interrupt and activity ARM: percpu.h: fix build error random: fix circular include dependency on arm64 after addition of percpu.h random32: remove net_rand_state from the latent entropy gcc plugin random32: move the pseudo-random 32-bit definitions to prandom.h ext4: fix direct I/O read error USB: serial: qcserial: add EM7305 QDL product ID net/mlx5e: Don't support phys switch id if not in switchdev mode ALSA: seq: oss: Serialize ioctls Bluetooth: Fix slab-out-of-bounds read in hci_extended_inquiry_result_evt() Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt() Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_with_rssi_evt() omapfb: dss: Fix max fclk divider for omap36xx vgacon: Fix for missing check in scrollback handling mtd: properly check all write ioctls for permissions leds: wm831x-status: fix use-after-free on unbind leds: da903x: fix use-after-free on unbind leds: lm3533: fix use-after-free on unbind leds: 88pm860x: fix use-after-free on unbind net/9p: validate fds in p9_fd_open drm/nouveau/fbcon: fix module unload when fbcon init has failed for some reason cfg80211: check vendor command doit pointer before use igb: reinit_locked() should be called with rtnl_lock atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent tools lib traceevent: Fix memory leak in process_dynamic_array_len xattr: break delegations in {set,remove}xattr binder: Prevent context manager from incrementing ref 0 ipv4: Silence suspicious RCU usage warning ipv6: fix memory leaks on IPV6_ADDRFORM path vxlan: Ensure FDB dump is performed under RCU net: lan78xx: replace bogus endpoint lookup Revert "vxlan: fix tos value before xmit" usb: hso: check for return value in hso_serial_common_create() Smack: fix use-after-free in smk_write_relabel_self() tracepoint: Mark __tracepoint_string's __used gpio: fix oops resulting from calling of_get_named_gpio(NULL, ...) cgroup: add missing skcd->no_refcnt check in cgroup_sk_clone() EDAC: Fix reference count leaks arm64: dts: qcom: msm8916: Replace invalid bias-pull-none property arm64: dts: exynos: Fix silent hang after boot on Espresso m68k: mac: Don't send IOP message until channel is idle m68k: mac: Fix IOP status/control register writes platform/x86: intel-hid: Fix return value check in check_acpi_dev() platform/x86: intel-vbtn: Fix return value check in check_acpi_dev() ARM: at91: pm: add missing put_device() call in at91_pm_sram_init() ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh() drm/tilcdc: fix leak & null ref in panel_connector_get_modes Bluetooth: add a mutex lock to avoid UAF in do_enale_set fs/btrfs: Add cond_resched() for try_release_extent_mapping() stalls drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync video: fbdev: neofb: fix memory leak in neo_scan_monitor() md-cluster: fix wild pointer of unlock_all_bitmaps() drm/nouveau: fix multiple instances of reference count leaks drm/debugfs: fix plain echo to connector "force" attribute mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls brcmfmac: To fix Bss Info flag definition Bug iwlegacy: Check the return value of pcie_capability_read_*() usb: gadget: net2280: fix memory leak on probe error handling paths bdc: Fix bug causing crash after multiple disconnects dyndbg: fix a BUG_ON in ddebug_describe_flags bcache: fix super block seq numbers comparision in register_cache_set() ACPICA: Do not increment operation_region reference counts for field units agp/intel: Fix a memory leak on module initialisation failure video: fbdev: sm712fb: fix an issue about iounmap for a wrong address console: newport_con: fix an issue about leak related system resources video: pxafb: Fix the function used to balance a 'dma_alloc_coherent()' call iio: improve IIO_CONCENTRATION channel type description leds: lm355x: avoid enum conversion warning media: omap3isp: Add missed v4l2_ctrl_handler_free() for preview_init_entities() scsi: cumana_2: Fix different dev_id between request_irq() and free_irq() drm/mipi: use dcs write for mipi_dsi_dcs_set_tear_scanline cxl: Fix kobject memleak drm/radeon: fix array out-of-bounds read and write issues scsi: powertec: Fix different dev_id between request_irq() and free_irq() scsi: eesox: Fix different dev_id between request_irq() and free_irq() media: firewire: Using uninitialized values in node_probe() media: exynos4-is: Add missed check for pinctrl_lookup_state() xfs: fix reflink quota reservation accounting error PCI: Fix pci_cfg_wait queue locking problem leds: core: Flush scheduled work for system suspend drm: panel: simple: Fix bpc for LG LB070WV8 panel scsi: scsi_debug: Add check for sdebug_max_queue during module init mwifiex: Prevent memory corruption handling keys powerpc/vdso: Fix vdso cpu truncation staging: rtl8192u: fix a dubious looking mask before a shift PCI/ASPM: Add missing newline in sysfs 'policy' drm/imx: tve: fix regulator_disable error path USB: serial: iuu_phoenix: fix led-activity helpers usb: dwc2: Fix error path in gadget registration scsi: mesh: Fix panic after host or bus reset Smack: fix another vsscanf out of bounds Smack: prevent underflow in smk_set_cipso() power: supply: check if calc_soc succeeded in pm860x_init_battery selftests/powerpc: Fix CPU affinity for child process selftests/powerpc: Fix online CPU selection s390/qeth: don't process empty bridge port events wl1251: fix always return 0 error net: spider_net: Fix the size used in a 'dma_free_coherent()' call fsl/fman: use 32-bit unsigned integer fsl/fman: fix dereference null return value fsl/fman: fix unreachable code fsl/fman: check dereferencing null pointer fsl/fman: fix eth hash table allocation dlm: Fix kobject memleak pinctrl-single: fix pcs_parse_pinconf() return value drivers/net/wan/lapbether: Added needed_headroom and a skb->len check net/nfc/rawsock.c: add CAP_NET_RAW check. net: Set fput_needed iff FDPUT_FPUT is set USB: serial: cp210x: re-enable auto-RTS on open USB: serial: cp210x: enable usb generic throttle/unthrottle ALSA: usb-audio: Creative USB X-Fi Pro SB1095 volume knob support ALSA: usb-audio: fix overeager device match for MacroSilicon MS2109 ALSA: usb-audio: add quirk for Pioneer DDJ-RB crypto: qat - fix double free in qat_uclo_create_batch_init_list crypto: ccp - Fix use of merged scatterlists fs/minix: check return value of sb_getblk() fs/minix: don't allow getting deleted inodes fs/minix: reject too-large maximum file size ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109 9p: Fix memory leak in v9fs_mount parisc: mask out enable and reserved bits from sba imask ARM: 8992/1: Fix unwind_frame for clang-built kernels xen/balloon: fix accounting in alloc_xenballooned_pages error path xen/balloon: make the balloon wait interruptible smb3: warn on confusing error scenario with sec=krb5 PCI: hotplug: ACPI: Fix context refcounting in acpiphp_grab_context() btrfs: don't allocate anonymous block device for user invisible roots btrfs: only search for left_info if there is no right_info in try_merge_free_space btrfs: fix memory leaks after failure to lookup checksums during inode logging iio: dac: ad5592r: fix unbalanced mutex unlocks in ad5592r_read_raw() xtensa: fix xtensa_pmu_setup prototype powerpc: Fix circular dependency between percpu.h and mmu.h net: ethernet: stmmac: Disable hardware multicast filter net: stmmac: dwmac1000: provide multicast filter fallback net/compat: Add missing sock updates for SCM_RIGHTS md/raid5: Fix Force reconstruct-write io stuck in degraded raid5 bcache: allocate meta data pages as compound pages mac80211: fix misplaced while instead of if MIPS: CPU#0 is not hotpluggable ext2: fix missing percpu_counter_inc ocfs2: change slot number type s16 to u16 ftrace: Setup correct FTRACE_FL_REGS flags for module kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler watchdog: f71808e_wdt: indicate WDIOF_CARDRESET support in watchdog_info.options watchdog: f71808e_wdt: remove use of wrong watchdog_info option watchdog: f71808e_wdt: clear watchdog timeout occurred flag pseries: Fix 64 bit logical memory block panic mfd: arizona: Ensure 32k clock is put on driver unbind and error USB: serial: ftdi_sio: make process-packet buffer unsigned USB: serial: ftdi_sio: clean up receive processing gpu: ipu-v3: image-convert: Combine rotate/no-rotate irq handlers iommu/omap: Check for failure of a call to omap_iommu_dump_ctx iommu/vt-d: Enforce PASID devTLB field mask i2c: rcar: slave: only send STOP event when we have been addressed clk: clk-atlas6: fix return value check in atlas6_clk_init() pwm: bcm-iproc: handle clk_get_rate() return Input: sentelic - fix error return when fsp_reg_write fails drm/vmwgfx: Fix two list_for_each loop exit tests net: qcom/emac: add missed clk_disable_unprepare in error path of emac_clks_phase1_init nfs: Fix getxattr kernel panic and memory overflow fs/ufs: avoid potential u32 multiplication overflow mfd: dln2: Run event handler loop under spinlock ALSA: echoaudio: Fix potential Oops in snd_echo_resume() sh: landisk: Add missing initialization of sh_io_port_base khugepaged: retract_page_tables() remember to test exit mm: Avoid calling build_all_zonelists_init under hotplug context Linux 4.9.233 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ied62cb0768f5bd8e989d75e7c2ccf6f1e6f2efd4
403 lines
8.7 KiB
ArmAsm
403 lines
8.7 KiB
ArmAsm
/*
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* Copyright (C) 1999, 2000, 2002 Niibe Yutaka
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* Copyright (C) 2003 - 2008 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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*/
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! NOTE:
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! GNU as (as of 2.9.1) changes bf/s into bt/s and bra, when the address
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! to be jumped is too far, but it causes illegal slot exception.
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/*
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* entry.S contains the system-call and fault low-level handling routines.
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* This also contains the timer-interrupt handler, as well as all interrupts
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* and faults that can result in a task-switch.
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*
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* NOTE: This code handles signal-recognition, which happens every time
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* after a timer-interrupt and after each system call.
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*
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* NOTE: This code uses a convention that instructions in the delay slot
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* of a transfer-control instruction are indented by an extra space, thus:
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*
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* jmp @k0 ! control-transfer instruction
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* ldc k1, ssr ! delay slot
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*
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* Stack layout in 'ret_from_syscall':
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* ptrace needs to have all regs on the stack.
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* if the order here is changed, it needs to be
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* updated in ptrace.c and ptrace.h
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*
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* r0
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* ...
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* r15 = stack pointer
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* spc
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* pr
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* ssr
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* gbr
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* mach
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* macl
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* syscall #
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*
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*/
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#include <asm/dwarf.h>
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#if defined(CONFIG_PREEMPT)
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# define preempt_stop() cli ; TRACE_IRQS_OFF
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#else
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# define preempt_stop()
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# define resume_kernel __restore_all
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#endif
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.align 2
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ENTRY(exception_error)
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!
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TRACE_IRQS_ON
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sti
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mov.l 1f, r0
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jmp @r0
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nop
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.align 2
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1: .long do_exception_error
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.align 2
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ret_from_exception:
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CFI_STARTPROC simple
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CFI_DEF_CFA r14, 0
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CFI_REL_OFFSET 17, 64
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CFI_REL_OFFSET 15, 60
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CFI_REL_OFFSET 14, 56
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CFI_REL_OFFSET 13, 52
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CFI_REL_OFFSET 12, 48
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CFI_REL_OFFSET 11, 44
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CFI_REL_OFFSET 10, 40
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CFI_REL_OFFSET 9, 36
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CFI_REL_OFFSET 8, 32
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preempt_stop()
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ENTRY(ret_from_irq)
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!
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mov #OFF_SR, r0
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mov.l @(r0,r15), r0 ! get status register
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shll r0
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shll r0 ! kernel space?
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get_current_thread_info r8, r0
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bt resume_kernel ! Yes, it's from kernel, go back soon
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#ifdef CONFIG_PREEMPT
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bra resume_userspace
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nop
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ENTRY(resume_kernel)
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cli
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TRACE_IRQS_OFF
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mov.l @(TI_PRE_COUNT,r8), r0 ! current_thread_info->preempt_count
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tst r0, r0
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bf noresched
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need_resched:
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mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
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tst #_TIF_NEED_RESCHED, r0 ! need_resched set?
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bt noresched
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mov #OFF_SR, r0
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mov.l @(r0,r15), r0 ! get status register
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shlr r0
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and #(0xf0>>1), r0 ! interrupts off (exception path)?
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cmp/eq #(0xf0>>1), r0
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bt noresched
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mov.l 1f, r0
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jsr @r0 ! call preempt_schedule_irq
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nop
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bra need_resched
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nop
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noresched:
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bra __restore_all
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nop
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.align 2
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1: .long preempt_schedule_irq
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#endif
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ENTRY(resume_userspace)
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! r8: current_thread_info
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cli
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TRACE_IRQS_OFF
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mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
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tst #(_TIF_WORK_MASK & 0xff), r0
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bt/s __restore_all
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tst #_TIF_NEED_RESCHED, r0
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.align 2
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work_pending:
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! r0: current_thread_info->flags
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! r8: current_thread_info
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! t: result of "tst #_TIF_NEED_RESCHED, r0"
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bf/s work_resched
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tst #(_TIF_SIGPENDING | _TIF_NOTIFY_RESUME), r0
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work_notifysig:
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bt/s __restore_all
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mov r15, r4
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mov r12, r5 ! set arg1(save_r0)
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mov r0, r6
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sti
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mov.l 2f, r1
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mov.l 3f, r0
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jmp @r1
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lds r0, pr
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work_resched:
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mov.l 1f, r1
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jsr @r1 ! schedule
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nop
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cli
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TRACE_IRQS_OFF
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!
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mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
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tst #(_TIF_WORK_MASK & 0xff), r0
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bt __restore_all
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bra work_pending
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tst #_TIF_NEED_RESCHED, r0
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.align 2
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1: .long schedule
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2: .long do_notify_resume
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3: .long resume_userspace
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.align 2
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syscall_exit_work:
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! r0: current_thread_info->flags
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! r8: current_thread_info
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tst #(_TIF_WORK_SYSCALL_MASK & 0xff), r0
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bt/s work_pending
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tst #_TIF_NEED_RESCHED, r0
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TRACE_IRQS_ON
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sti
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mov r15, r4
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mov.l 8f, r0 ! do_syscall_trace_leave
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jsr @r0
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nop
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bra resume_userspace
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nop
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.align 2
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syscall_trace_entry:
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! Yes it is traced.
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mov r15, r4
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mov.l 7f, r11 ! Call do_syscall_trace_enter which notifies
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jsr @r11 ! superior (will chomp R[0-7])
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nop
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mov.l r0, @(OFF_R0,r15) ! Save return value
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! Reload R0-R4 from kernel stack, where the
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! parent may have modified them using
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! ptrace(POKEUSR). (Note that R0-R2 are
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! reloaded from the kernel stack by syscall_call
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! below, so don't need to be reloaded here.)
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! This allows the parent to rewrite system calls
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! and args on the fly.
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mov.l @(OFF_R4,r15), r4 ! arg0
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mov.l @(OFF_R5,r15), r5
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mov.l @(OFF_R6,r15), r6
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mov.l @(OFF_R7,r15), r7 ! arg3
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mov.l @(OFF_R3,r15), r3 ! syscall_nr
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!
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mov.l 6f, r10 ! Number of syscalls
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cmp/hs r10, r3
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bf syscall_call
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mov #-ENOSYS, r0
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bra syscall_exit
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mov.l r0, @(OFF_R0,r15) ! Return value
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__restore_all:
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mov #OFF_SR, r0
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mov.l @(r0,r15), r0 ! get status register
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shlr2 r0
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and #0x3c, r0
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cmp/eq #0x3c, r0
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bt 1f
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TRACE_IRQS_ON
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bra 2f
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nop
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1:
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TRACE_IRQS_OFF
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2:
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mov.l 3f, r0
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jmp @r0
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nop
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.align 2
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3: .long restore_all
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.align 2
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syscall_badsys: ! Bad syscall number
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get_current_thread_info r8, r0
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mov #-ENOSYS, r0
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bra resume_userspace
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mov.l r0, @(OFF_R0,r15) ! Return value
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/*
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* The main debug trap handler.
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*
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* r8=TRA (not the trap number!)
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*
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* Note: This assumes that the trapa value is left in its original
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* form (without the shlr2 shift) so the calculation for the jump
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* call table offset remains a simple in place mask.
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*/
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debug_trap:
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mov r8, r0
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and #(0xf << 2), r0
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mov.l 1f, r8
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add r0, r8
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mov.l @r8, r8
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jsr @r8
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nop
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bra ret_from_exception
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nop
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CFI_ENDPROC
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.align 2
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1: .long debug_trap_table
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/*
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* Syscall interface:
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*
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* Syscall #: R3
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* Arguments #0 to #3: R4--R7
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* Arguments #4 to #6: R0, R1, R2
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* TRA: See following table.
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*
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* (TRA>>2) Purpose
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* -------- -------
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* 0x00-0x0f original SH-3/4 syscall ABI (not in general use).
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* 0x10-0x1f general SH-3/4 syscall ABI.
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* 0x1f unified SH-2/3/4 syscall ABI (preferred).
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* 0x20-0x2f original SH-2 syscall ABI.
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* 0x30-0x3f debug traps used by the kernel.
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* 0x40-0xff Not supported by all parts, so left unhandled.
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*
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* For making system calls, any trap number in the range for the
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* given cpu model may be used, but the unified trap number 0x1f is
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* preferred for compatibility with all models.
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*
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* The low bits of the trap number were once documented as matching
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* the number of arguments, but they were never actually used as such
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* by the kernel. SH-2 originally used its own separate trap range
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* because several hardware exceptions fell in the range used for the
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* SH-3/4 syscall ABI.
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*
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* This code also handles delegating other traps to the BIOS/gdb stub.
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*
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* Note: When we're first called, the TRA value must be shifted
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* right 2 bits in order to get the value that was used as the "trapa"
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* argument.
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*/
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.align 2
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.globl ret_from_fork
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ret_from_fork:
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mov.l 1f, r8
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jsr @r8
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mov r0, r4
|
|
bra syscall_exit
|
|
nop
|
|
|
|
.align 2
|
|
.globl ret_from_kernel_thread
|
|
ret_from_kernel_thread:
|
|
mov.l 1f, r8
|
|
jsr @r8
|
|
mov r0, r4
|
|
mov.l @(OFF_R5,r15), r5 ! fn
|
|
jsr @r5
|
|
mov.l @(OFF_R4,r15), r4 ! arg
|
|
bra syscall_exit
|
|
nop
|
|
|
|
.align 2
|
|
1: .long schedule_tail
|
|
|
|
/*
|
|
* The poorly named main trapa decode and dispatch routine, for
|
|
* system calls and debug traps through their respective jump tables.
|
|
*/
|
|
ENTRY(system_call)
|
|
setup_frame_reg
|
|
#if !defined(CONFIG_CPU_SH2)
|
|
mov.l 1f, r9
|
|
mov.l @r9, r8 ! Read from TRA (Trap Address) Register
|
|
#endif
|
|
|
|
mov #OFF_TRA, r10
|
|
add r15, r10
|
|
mov.l r8, @r10 ! set TRA value to tra
|
|
|
|
/*
|
|
* Check the trap type
|
|
*/
|
|
mov #((0x20 << 2) - 1), r9
|
|
cmp/hi r9, r8
|
|
bt/s debug_trap ! it's a debug trap..
|
|
nop
|
|
|
|
TRACE_IRQS_ON
|
|
sti
|
|
|
|
!
|
|
get_current_thread_info r8, r10
|
|
mov.l @(TI_FLAGS,r8), r8
|
|
mov #(_TIF_WORK_SYSCALL_MASK & 0xff), r10
|
|
mov #(_TIF_WORK_SYSCALL_MASK >> 8), r9
|
|
tst r10, r8
|
|
shll8 r9
|
|
bf syscall_trace_entry
|
|
tst r9, r8
|
|
bf syscall_trace_entry
|
|
!
|
|
mov.l 6f, r8 ! Number of syscalls
|
|
cmp/hs r8, r3
|
|
bt syscall_badsys
|
|
!
|
|
syscall_call:
|
|
shll2 r3 ! x4
|
|
mov.l 3f, r8 ! Load the address of sys_call_table
|
|
add r8, r3
|
|
mov.l @r3, r8
|
|
mov.l @(OFF_R2,r15), r2
|
|
mov.l @(OFF_R1,r15), r1
|
|
mov.l @(OFF_R0,r15), r0
|
|
mov.l r2, @-r15
|
|
mov.l r1, @-r15
|
|
mov.l r0, @-r15
|
|
jsr @r8 ! jump to specific syscall handler
|
|
nop
|
|
add #12, r15
|
|
mov.l @(OFF_R0,r15), r12 ! save r0
|
|
mov.l r0, @(OFF_R0,r15) ! save the return value
|
|
!
|
|
syscall_exit:
|
|
cli
|
|
TRACE_IRQS_OFF
|
|
!
|
|
get_current_thread_info r8, r0
|
|
mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
|
|
tst #(_TIF_ALLWORK_MASK & 0xff), r0
|
|
mov #(_TIF_ALLWORK_MASK >> 8), r1
|
|
bf syscall_exit_work
|
|
shlr8 r0
|
|
tst r0, r1
|
|
bf syscall_exit_work
|
|
bra __restore_all
|
|
nop
|
|
.align 2
|
|
#if !defined(CONFIG_CPU_SH2)
|
|
1: .long TRA
|
|
#endif
|
|
6: .long NR_syscalls
|
|
3: .long sys_call_table
|
|
7: .long do_syscall_trace_enter
|
|
8: .long do_syscall_trace_leave
|