From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- arch/s390/kernel/compat_signal.c | 422 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 422 insertions(+) create mode 100644 arch/s390/kernel/compat_signal.c (limited to 'arch/s390/kernel/compat_signal.c') diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c new file mode 100644 index 000000000..cecedd01d --- /dev/null +++ b/arch/s390/kernel/compat_signal.c @@ -0,0 +1,422 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright IBM Corp. 2000, 2006 + * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) + * Gerhard Tonn (ton@de.ibm.com) + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "compat_linux.h" +#include "compat_ptrace.h" +#include "entry.h" + +typedef struct +{ + __u8 callee_used_stack[__SIGNAL_FRAMESIZE32]; + struct sigcontext32 sc; + _sigregs32 sregs; + int signo; + _sigregs_ext32 sregs_ext; + __u16 svc_insn; /* Offset of svc_insn is NOT fixed! */ +} sigframe32; + +typedef struct +{ + __u8 callee_used_stack[__SIGNAL_FRAMESIZE32]; + __u16 svc_insn; + compat_siginfo_t info; + struct ucontext32 uc; +} rt_sigframe32; + +/* Store registers needed to create the signal frame */ +static void store_sigregs(void) +{ + save_access_regs(current->thread.acrs); + save_fpu_regs(); +} + +/* Load registers after signal return */ +static void load_sigregs(void) +{ + restore_access_regs(current->thread.acrs); +} + +static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs) +{ + _sigregs32 user_sregs; + int i; + + user_sregs.regs.psw.mask = (__u32)(regs->psw.mask >> 32); + user_sregs.regs.psw.mask &= PSW32_MASK_USER | PSW32_MASK_RI; + user_sregs.regs.psw.mask |= PSW32_USER_BITS; + user_sregs.regs.psw.addr = (__u32) regs->psw.addr | + (__u32)(regs->psw.mask & PSW_MASK_BA); + for (i = 0; i < NUM_GPRS; i++) + user_sregs.regs.gprs[i] = (__u32) regs->gprs[i]; + memcpy(&user_sregs.regs.acrs, current->thread.acrs, + sizeof(user_sregs.regs.acrs)); + fpregs_store((_s390_fp_regs *) &user_sregs.fpregs, ¤t->thread.fpu); + if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs32))) + return -EFAULT; + return 0; +} + +static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs) +{ + _sigregs32 user_sregs; + int i; + + /* Always make any pending restarted system call return -EINTR */ + current->restart_block.fn = do_no_restart_syscall; + + if (__copy_from_user(&user_sregs, &sregs->regs, sizeof(user_sregs))) + return -EFAULT; + + if (!is_ri_task(current) && (user_sregs.regs.psw.mask & PSW32_MASK_RI)) + return -EINVAL; + + /* Test the floating-point-control word. */ + if (test_fp_ctl(user_sregs.fpregs.fpc)) + return -EINVAL; + + /* Use regs->psw.mask instead of PSW_USER_BITS to preserve PER bit. */ + regs->psw.mask = (regs->psw.mask & ~(PSW_MASK_USER | PSW_MASK_RI)) | + (__u64)(user_sregs.regs.psw.mask & PSW32_MASK_USER) << 32 | + (__u64)(user_sregs.regs.psw.mask & PSW32_MASK_RI) << 32 | + (__u64)(user_sregs.regs.psw.addr & PSW32_ADDR_AMODE); + /* Check for invalid user address space control. */ + if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_HOME) + regs->psw.mask = PSW_ASC_PRIMARY | + (regs->psw.mask & ~PSW_MASK_ASC); + regs->psw.addr = (__u64)(user_sregs.regs.psw.addr & PSW32_ADDR_INSN); + for (i = 0; i < NUM_GPRS; i++) + regs->gprs[i] = (__u64) user_sregs.regs.gprs[i]; + memcpy(¤t->thread.acrs, &user_sregs.regs.acrs, + sizeof(current->thread.acrs)); + fpregs_load((_s390_fp_regs *) &user_sregs.fpregs, ¤t->thread.fpu); + + clear_pt_regs_flag(regs, PIF_SYSCALL); /* No longer in a system call */ + return 0; +} + +static int save_sigregs_ext32(struct pt_regs *regs, + _sigregs_ext32 __user *sregs_ext) +{ + __u32 gprs_high[NUM_GPRS]; + __u64 vxrs[__NUM_VXRS_LOW]; + int i; + + /* Save high gprs to signal stack */ + for (i = 0; i < NUM_GPRS; i++) + gprs_high[i] = regs->gprs[i] >> 32; + if (__copy_to_user(&sregs_ext->gprs_high, &gprs_high, + sizeof(sregs_ext->gprs_high))) + return -EFAULT; + + /* Save vector registers to signal stack */ + if (MACHINE_HAS_VX) { + for (i = 0; i < __NUM_VXRS_LOW; i++) + vxrs[i] = current->thread.fpu.vxrs[i].low; + if (__copy_to_user(&sregs_ext->vxrs_low, vxrs, + sizeof(sregs_ext->vxrs_low)) || + __copy_to_user(&sregs_ext->vxrs_high, + current->thread.fpu.vxrs + __NUM_VXRS_LOW, + sizeof(sregs_ext->vxrs_high))) + return -EFAULT; + } + return 0; +} + +static int restore_sigregs_ext32(struct pt_regs *regs, + _sigregs_ext32 __user *sregs_ext) +{ + __u32 gprs_high[NUM_GPRS]; + __u64 vxrs[__NUM_VXRS_LOW]; + int i; + + /* Restore high gprs from signal stack */ + if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high, + sizeof(sregs_ext->gprs_high))) + return -EFAULT; + for (i = 0; i < NUM_GPRS; i++) + *(__u32 *)®s->gprs[i] = gprs_high[i]; + + /* Restore vector registers from signal stack */ + if (MACHINE_HAS_VX) { + if (__copy_from_user(vxrs, &sregs_ext->vxrs_low, + sizeof(sregs_ext->vxrs_low)) || + __copy_from_user(current->thread.fpu.vxrs + __NUM_VXRS_LOW, + &sregs_ext->vxrs_high, + sizeof(sregs_ext->vxrs_high))) + return -EFAULT; + for (i = 0; i < __NUM_VXRS_LOW; i++) + current->thread.fpu.vxrs[i].low = vxrs[i]; + } + return 0; +} + +COMPAT_SYSCALL_DEFINE0(sigreturn) +{ + struct pt_regs *regs = task_pt_regs(current); + sigframe32 __user *frame = (sigframe32 __user *)regs->gprs[15]; + sigset_t set; + + if (get_compat_sigset(&set, (compat_sigset_t __user *)frame->sc.oldmask)) + goto badframe; + set_current_blocked(&set); + save_fpu_regs(); + if (restore_sigregs32(regs, &frame->sregs)) + goto badframe; + if (restore_sigregs_ext32(regs, &frame->sregs_ext)) + goto badframe; + load_sigregs(); + return regs->gprs[2]; +badframe: + force_sig(SIGSEGV); + return 0; +} + +COMPAT_SYSCALL_DEFINE0(rt_sigreturn) +{ + struct pt_regs *regs = task_pt_regs(current); + rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15]; + sigset_t set; + + if (get_compat_sigset(&set, &frame->uc.uc_sigmask)) + goto badframe; + set_current_blocked(&set); + if (compat_restore_altstack(&frame->uc.uc_stack)) + goto badframe; + save_fpu_regs(); + if (restore_sigregs32(regs, &frame->uc.uc_mcontext)) + goto badframe; + if (restore_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext)) + goto badframe; + load_sigregs(); + return regs->gprs[2]; +badframe: + force_sig(SIGSEGV); + return 0; +} + +/* + * Set up a signal frame. + */ + + +/* + * Determine which stack to use.. + */ +static inline void __user * +get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) +{ + unsigned long sp; + + /* Default to using normal stack */ + sp = (unsigned long) A(regs->gprs[15]); + + /* Overflow on alternate signal stack gives SIGSEGV. */ + if (on_sig_stack(sp) && !on_sig_stack((sp - frame_size) & -8UL)) + return (void __user *) -1UL; + + /* This is the X/Open sanctioned signal stack switching. */ + if (ka->sa.sa_flags & SA_ONSTACK) { + if (! sas_ss_flags(sp)) + sp = current->sas_ss_sp + current->sas_ss_size; + } + + return (void __user *)((sp - frame_size) & -8ul); +} + +static int setup_frame32(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) +{ + int sig = ksig->sig; + sigframe32 __user *frame; + unsigned long restorer; + size_t frame_size; + + /* + * gprs_high are always present for 31-bit compat tasks. + * The space for vector registers is only allocated if + * the machine supports it + */ + frame_size = sizeof(*frame) - sizeof(frame->sregs_ext.__reserved); + if (!MACHINE_HAS_VX) + frame_size -= sizeof(frame->sregs_ext.vxrs_low) + + sizeof(frame->sregs_ext.vxrs_high); + frame = get_sigframe(&ksig->ka, regs, frame_size); + if (frame == (void __user *) -1UL) + return -EFAULT; + + /* Set up backchain. */ + if (__put_user(regs->gprs[15], (unsigned int __user *) frame)) + return -EFAULT; + + /* Create struct sigcontext32 on the signal stack */ + if (put_compat_sigset((compat_sigset_t __user *)frame->sc.oldmask, + set, sizeof(compat_sigset_t))) + return -EFAULT; + if (__put_user(ptr_to_compat(&frame->sregs), &frame->sc.sregs)) + return -EFAULT; + + /* Store registers needed to create the signal frame */ + store_sigregs(); + + /* Create _sigregs32 on the signal stack */ + if (save_sigregs32(regs, &frame->sregs)) + return -EFAULT; + + /* Place signal number on stack to allow backtrace from handler. */ + if (__put_user(regs->gprs[2], (int __force __user *) &frame->signo)) + return -EFAULT; + + /* Create _sigregs_ext32 on the signal stack */ + if (save_sigregs_ext32(regs, &frame->sregs_ext)) + return -EFAULT; + + /* Set up to return from userspace. If provided, use a stub + already in userspace. */ + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + restorer = (unsigned long __force) + ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE; + } else { + restorer = VDSO32_SYMBOL(current, sigreturn); + } + + /* Set up registers for signal handler */ + regs->gprs[14] = restorer; + regs->gprs[15] = (__force __u64) frame; + /* Force 31 bit amode and default user address space control. */ + regs->psw.mask = PSW_MASK_BA | + (PSW_USER_BITS & PSW_MASK_ASC) | + (regs->psw.mask & ~PSW_MASK_ASC); + regs->psw.addr = (__force __u64) ksig->ka.sa.sa_handler; + + regs->gprs[2] = sig; + regs->gprs[3] = (__force __u64) &frame->sc; + + /* We forgot to include these in the sigcontext. + To avoid breaking binary compatibility, they are passed as args. */ + if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL || + sig == SIGTRAP || sig == SIGFPE) { + /* set extra registers only for synchronous signals */ + regs->gprs[4] = regs->int_code & 127; + regs->gprs[5] = regs->int_parm_long; + regs->gprs[6] = current->thread.last_break; + } + + return 0; +} + +static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) +{ + rt_sigframe32 __user *frame; + unsigned long restorer; + size_t frame_size; + u32 uc_flags; + + frame_size = sizeof(*frame) - + sizeof(frame->uc.uc_mcontext_ext.__reserved); + /* + * gprs_high are always present for 31-bit compat tasks. + * The space for vector registers is only allocated if + * the machine supports it + */ + uc_flags = UC_GPRS_HIGH; + if (MACHINE_HAS_VX) { + uc_flags |= UC_VXRS; + } else + frame_size -= sizeof(frame->uc.uc_mcontext_ext.vxrs_low) + + sizeof(frame->uc.uc_mcontext_ext.vxrs_high); + frame = get_sigframe(&ksig->ka, regs, frame_size); + if (frame == (void __user *) -1UL) + return -EFAULT; + + /* Set up backchain. */ + if (__put_user(regs->gprs[15], (unsigned int __force __user *) frame)) + return -EFAULT; + + /* Set up to return from userspace. If provided, use a stub + already in userspace. */ + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + restorer = (unsigned long __force) + ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE; + } else { + restorer = VDSO32_SYMBOL(current, rt_sigreturn); + } + + /* Create siginfo on the signal stack */ + if (copy_siginfo_to_user32(&frame->info, &ksig->info)) + return -EFAULT; + + /* Store registers needed to create the signal frame */ + store_sigregs(); + + /* Create ucontext on the signal stack. */ + if (__put_user(uc_flags, &frame->uc.uc_flags) || + __put_user(0, &frame->uc.uc_link) || + __compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]) || + save_sigregs32(regs, &frame->uc.uc_mcontext) || + put_compat_sigset(&frame->uc.uc_sigmask, set, sizeof(compat_sigset_t)) || + save_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext)) + return -EFAULT; + + /* Set up registers for signal handler */ + regs->gprs[14] = restorer; + regs->gprs[15] = (__force __u64) frame; + /* Force 31 bit amode and default user address space control. */ + regs->psw.mask = PSW_MASK_BA | + (PSW_USER_BITS & PSW_MASK_ASC) | + (regs->psw.mask & ~PSW_MASK_ASC); + regs->psw.addr = (__u64 __force) ksig->ka.sa.sa_handler; + + regs->gprs[2] = ksig->sig; + regs->gprs[3] = (__force __u64) &frame->info; + regs->gprs[4] = (__force __u64) &frame->uc; + regs->gprs[5] = current->thread.last_break; + return 0; +} + +/* + * OK, we're invoking a handler + */ + +void handle_signal32(struct ksignal *ksig, sigset_t *oldset, + struct pt_regs *regs) +{ + int ret; + + /* Set up the stack frame */ + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame32(ksig, oldset, regs); + else + ret = setup_frame32(ksig, oldset, regs); + + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLE_STEP)); +} + -- cgit v1.2.3