From nobody Mon Feb 9 23:58:09 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1525079993356361.1691335455595; Mon, 30 Apr 2018 02:19:53 -0700 (PDT) Received: from localhost ([::1]:58559 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fD4yO-0004o3-AP for importer@patchew.org; Mon, 30 Apr 2018 05:19:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32820) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fD4q1-0006HM-JS for qemu-devel@nongnu.org; Mon, 30 Apr 2018 05:11:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fD4pv-00060I-RN for qemu-devel@nongnu.org; Mon, 30 Apr 2018 05:11:13 -0400 Received: from mout.kundenserver.de ([217.72.192.73]:45299) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fD4pv-0005wu-8F; Mon, 30 Apr 2018 05:11:07 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue102 [212.227.15.183]) with ESMTPSA (Nemesis) id 0Lc8iD-1eU96s3ojF-00jWaf; Mon, 30 Apr 2018 11:10:53 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Date: Mon, 30 Apr 2018 11:10:00 +0200 Message-Id: <20180430091037.13878-6-laurent@vivier.eu> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180430091037.13878-1-laurent@vivier.eu> References: <20180430091037.13878-1-laurent@vivier.eu> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:OQhuHh3SjK3IvC2Nwl+F3BarK6FEL3WF+uXLrY75n67XXSpKnJJ BjXd4QxvN5dWixwWiGsnwbFO/Bl352zc2GjH/Nu/yc5KuOuXxw2iWz28R2M0qKqkVT5YyuR elELDML+tsvpGfHvDTkyGwxHKPPBwgux8j4RovCedyQOAwaS0KbYXHMitbQsTV3nEcnxpLR N9DAhECzgr3GZtvNsRuCw== X-UI-Out-Filterresults: notjunk:1;V01:K0:2ouIpfaoxa0=:U+K2XZdTFBtpUIY9jkrR9z hicmwhEMcqXiz9cBq6d4ur+g9+T/lOC9WlH80Fpw78hQNWAWJpHmottxAel1Fez04y6dOkANW k1DF2tD1bByh/vLSonn2nfLUCFyRXZYfbn8b2REIZqAxMAX2+qgd36cwGyAbHzuIsvSJe7ykd goAQob3b/56PjKXlEIe0/2iWYa8ZQaEgSHTJi+c4B2KNNIkz1Avuf8R0fZ67rLhIK3LoAKH60 UkDX3kKZC1Lr6oNrlq9E4YKq1V87HOBtKyAPNikKuUAfkA2GRhooAgVZvIztYFnWBqVBdOZ6g BCd/Ff0Wg1dA1JbDPLPtBrovHw5Pfk/kHUXlir/Yz0uMkSvwnhe3+S67LwnFNLdIDaMENx2qr OxJsFD6cTrPFWCxF8FwhLQDpBfUbAgg42tb8BrYOIxJmoDsZWUPZse9vEIh87cDkWi27W4RZE qbqoVSKmj2pNaXG4VHy/OdULWkTLKGHnVAkno1o6XpTMjavcwFELn6urXSQkLb8blCg/cGvuy AvZwVYoscJSoWZIzUH3iyC/9OYiRAwJ71rJOQGyk/DqZZhqIy2tvPK09tsB3izMq4oKXfDyNs IC8MFlqIfA8zn0AxN+1XFhCR6adHBHS8mbFlR4RDeFdl4HHG587N9I4kr2xohOP+77qu42l97 uJMfuFggqIRnLDLJtgyRChKXDLCDb1n1vAMG0hnyy0aG2G7eCyZl2bDAVqYcfvHGCc9av3UKL 5e5Acs0W9208zEJ+ X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 217.72.192.73 Subject: [Qemu-devel] [PULL 05/42] linux-user: move arm signal.c parts to arm directory X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Riku Voipio , Laurent Vivier , Cornelia Huck Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 No code change, only move code from signal.c to arm/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier Reviewed-by: Alex Benn=C3=A9e Reviewed-by: Richard Henderson Message-Id: <20180424192635.6027-4-laurent@vivier.eu> --- linux-user/arm/signal.c | 754 +++++++++++++++++++++++++++++++++++++= ++++ linux-user/arm/target_signal.h | 6 +- linux-user/signal.c | 751 -------------------------------------= --- 3 files changed, 759 insertions(+), 752 deletions(-) diff --git a/linux-user/arm/signal.c b/linux-user/arm/signal.c index 02ca338b6c..0c1ec53025 100644 --- a/linux-user/arm/signal.c +++ b/linux-user/arm/signal.c @@ -16,3 +16,757 @@ * You should have received a copy of the GNU General Public License * along with this program; if not, see . */ +#include "qemu/osdep.h" +#include "qemu.h" +#include "target_signal.h" +#include "signal-common.h" +#include "linux-user/trace.h" + +struct target_sigcontext { + abi_ulong trap_no; + abi_ulong error_code; + abi_ulong oldmask; + abi_ulong arm_r0; + abi_ulong arm_r1; + abi_ulong arm_r2; + abi_ulong arm_r3; + abi_ulong arm_r4; + abi_ulong arm_r5; + abi_ulong arm_r6; + abi_ulong arm_r7; + abi_ulong arm_r8; + abi_ulong arm_r9; + abi_ulong arm_r10; + abi_ulong arm_fp; + abi_ulong arm_ip; + abi_ulong arm_sp; + abi_ulong arm_lr; + abi_ulong arm_pc; + abi_ulong arm_cpsr; + abi_ulong fault_address; +}; + +struct target_ucontext_v1 { + abi_ulong tuc_flags; + abi_ulong tuc_link; + target_stack_t tuc_stack; + struct target_sigcontext tuc_mcontext; + target_sigset_t tuc_sigmask; /* mask last for extensibility */ +}; + +struct target_ucontext_v2 { + abi_ulong tuc_flags; + abi_ulong tuc_link; + target_stack_t tuc_stack; + struct target_sigcontext tuc_mcontext; + target_sigset_t tuc_sigmask; /* mask last for extensibility */ + char __unused[128 - sizeof(target_sigset_t)]; + abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); +}; + +struct target_user_vfp { + uint64_t fpregs[32]; + abi_ulong fpscr; +}; + +struct target_user_vfp_exc { + abi_ulong fpexc; + abi_ulong fpinst; + abi_ulong fpinst2; +}; + +struct target_vfp_sigframe { + abi_ulong magic; + abi_ulong size; + struct target_user_vfp ufp; + struct target_user_vfp_exc ufp_exc; +} __attribute__((__aligned__(8))); + +struct target_iwmmxt_sigframe { + abi_ulong magic; + abi_ulong size; + uint64_t regs[16]; + /* Note that not all the coprocessor control registers are stored here= */ + uint32_t wcssf; + uint32_t wcasf; + uint32_t wcgr0; + uint32_t wcgr1; + uint32_t wcgr2; + uint32_t wcgr3; +} __attribute__((__aligned__(8))); + +#define TARGET_VFP_MAGIC 0x56465001 +#define TARGET_IWMMXT_MAGIC 0x12ef842a + +struct sigframe_v1 +{ + struct target_sigcontext sc; + abi_ulong extramask[TARGET_NSIG_WORDS-1]; + abi_ulong retcode; +}; + +struct sigframe_v2 +{ + struct target_ucontext_v2 uc; + abi_ulong retcode; +}; + +struct rt_sigframe_v1 +{ + abi_ulong pinfo; + abi_ulong puc; + struct target_siginfo info; + struct target_ucontext_v1 uc; + abi_ulong retcode; +}; + +struct rt_sigframe_v2 +{ + struct target_siginfo info; + struct target_ucontext_v2 uc; + abi_ulong retcode; +}; + +#define TARGET_CONFIG_CPU_32 1 + +/* + * For ARM syscalls, we encode the syscall number into the instruction. + */ +#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYS= CALL_BASE)) +#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_= SYSCALL_BASE)) + +/* + * For Thumb syscalls, we pass the syscall number via r7. We therefore + * need two 16-bit instructions. + */ +#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigret= urn)) +#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sig= return)) + +static const abi_ulong retcodes[4] =3D { + SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, + SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN +}; + + +static inline int valid_user_regs(CPUARMState *regs) +{ + return 1; +} + +static void +setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,= */ + CPUARMState *env, abi_ulong mask) +{ + __put_user(env->regs[0], &sc->arm_r0); + __put_user(env->regs[1], &sc->arm_r1); + __put_user(env->regs[2], &sc->arm_r2); + __put_user(env->regs[3], &sc->arm_r3); + __put_user(env->regs[4], &sc->arm_r4); + __put_user(env->regs[5], &sc->arm_r5); + __put_user(env->regs[6], &sc->arm_r6); + __put_user(env->regs[7], &sc->arm_r7); + __put_user(env->regs[8], &sc->arm_r8); + __put_user(env->regs[9], &sc->arm_r9); + __put_user(env->regs[10], &sc->arm_r10); + __put_user(env->regs[11], &sc->arm_fp); + __put_user(env->regs[12], &sc->arm_ip); + __put_user(env->regs[13], &sc->arm_sp); + __put_user(env->regs[14], &sc->arm_lr); + __put_user(env->regs[15], &sc->arm_pc); +#ifdef TARGET_CONFIG_CPU_32 + __put_user(cpsr_read(env), &sc->arm_cpsr); +#endif + + __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); + __put_user(/* current->thread.error_code */ 0, &sc->error_code); + __put_user(/* current->thread.address */ 0, &sc->fault_address); + __put_user(mask, &sc->oldmask); +} + +static inline abi_ulong +get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize) +{ + unsigned long sp =3D regs->regs[13]; + + /* + * This is the X/Open sanctioned signal stack switching. + */ + if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) { + sp =3D target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_= size; + } + /* + * ATPCS B01 mandates 8-byte alignment + */ + return (sp - framesize) & ~7; +} + +static void +setup_return(CPUARMState *env, struct target_sigaction *ka, + abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_a= ddr) +{ + abi_ulong handler =3D ka->_sa_handler; + abi_ulong retcode; + int thumb =3D handler & 1; + uint32_t cpsr =3D cpsr_read(env); + + cpsr &=3D ~CPSR_IT; + if (thumb) { + cpsr |=3D CPSR_T; + } else { + cpsr &=3D ~CPSR_T; + } + + if (ka->sa_flags & TARGET_SA_RESTORER) { + retcode =3D ka->sa_restorer; + } else { + unsigned int idx =3D thumb; + + if (ka->sa_flags & TARGET_SA_SIGINFO) { + idx +=3D 2; + } + + __put_user(retcodes[idx], rc); + + retcode =3D rc_addr + thumb; + } + + env->regs[0] =3D usig; + env->regs[13] =3D frame_addr; + env->regs[14] =3D retcode; + env->regs[15] =3D handler & (thumb ? ~1 : ~3); + cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr); +} + +static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *= env) +{ + int i; + struct target_vfp_sigframe *vfpframe; + vfpframe =3D (struct target_vfp_sigframe *)regspace; + __put_user(TARGET_VFP_MAGIC, &vfpframe->magic); + __put_user(sizeof(*vfpframe), &vfpframe->size); + for (i =3D 0; i < 32; i++) { + __put_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]); + } + __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr); + __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc); + __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); + __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2= ); + return (abi_ulong*)(vfpframe+1); +} + +static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, + CPUARMState *env) +{ + int i; + struct target_iwmmxt_sigframe *iwmmxtframe; + iwmmxtframe =3D (struct target_iwmmxt_sigframe *)regspace; + __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic); + __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size); + for (i =3D 0; i < 16; i++) { + __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); + } + __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); + __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); + __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); + __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); + __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); + __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); + return (abi_ulong*)(iwmmxtframe+1); +} + +static void setup_sigframe_v2(struct target_ucontext_v2 *uc, + target_sigset_t *set, CPUARMState *env) +{ + struct target_sigaltstack stack; + int i; + abi_ulong *regspace; + + /* Clear all the bits of the ucontext we don't use. */ + memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); + + memset(&stack, 0, sizeof(stack)); + __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); + __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); + __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); + memcpy(&uc->tuc_stack, &stack, sizeof(stack)); + + setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); + /* Save coprocessor signal frame. */ + regspace =3D uc->tuc_regspace; + if (arm_feature(env, ARM_FEATURE_VFP)) { + regspace =3D setup_sigframe_v2_vfp(regspace, env); + } + if (arm_feature(env, ARM_FEATURE_IWMMXT)) { + regspace =3D setup_sigframe_v2_iwmmxt(regspace, env); + } + + /* Write terminating magic word */ + __put_user(0, regspace); + + for(i =3D 0; i < TARGET_NSIG_WORDS; i++) { + __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); + } +} + +/* compare linux/arch/arm/kernel/signal.c:setup_frame() */ +static void setup_frame_v1(int usig, struct target_sigaction *ka, + target_sigset_t *set, CPUARMState *regs) +{ + struct sigframe_v1 *frame; + abi_ulong frame_addr =3D get_sigframe(ka, regs, sizeof(*frame)); + int i; + + trace_user_setup_frame(regs, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto sigsegv; + } + + setup_sigcontext(&frame->sc, regs, set->sig[0]); + + for(i =3D 1; i < TARGET_NSIG_WORDS; i++) { + __put_user(set->sig[i], &frame->extramask[i - 1]); + } + + setup_return(regs, ka, &frame->retcode, frame_addr, usig, + frame_addr + offsetof(struct sigframe_v1, retcode)); + + unlock_user_struct(frame, frame_addr, 1); + return; +sigsegv: + force_sigsegv(usig); +} + +static void setup_frame_v2(int usig, struct target_sigaction *ka, + target_sigset_t *set, CPUARMState *regs) +{ + struct sigframe_v2 *frame; + abi_ulong frame_addr =3D get_sigframe(ka, regs, sizeof(*frame)); + + trace_user_setup_frame(regs, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto sigsegv; + } + + setup_sigframe_v2(&frame->uc, set, regs); + + setup_return(regs, ka, &frame->retcode, frame_addr, usig, + frame_addr + offsetof(struct sigframe_v2, retcode)); + + unlock_user_struct(frame, frame_addr, 1); + return; +sigsegv: + force_sigsegv(usig); +} + +void setup_frame(int usig, struct target_sigaction *ka, + target_sigset_t *set, CPUARMState *regs) +{ + if (get_osversion() >=3D 0x020612) { + setup_frame_v2(usig, ka, set, regs); + } else { + setup_frame_v1(usig, ka, set, regs); + } +} + +/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ +static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUARMState *env) +{ + struct rt_sigframe_v1 *frame; + abi_ulong frame_addr =3D get_sigframe(ka, env, sizeof(*frame)); + struct target_sigaltstack stack; + int i; + abi_ulong info_addr, uc_addr; + + trace_user_setup_rt_frame(env, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto sigsegv; + } + + info_addr =3D frame_addr + offsetof(struct rt_sigframe_v1, info); + __put_user(info_addr, &frame->pinfo); + uc_addr =3D frame_addr + offsetof(struct rt_sigframe_v1, uc); + __put_user(uc_addr, &frame->puc); + tswap_siginfo(&frame->info, info); + + /* Clear all the bits of the ucontext we don't use. */ + memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext= )); + + memset(&stack, 0, sizeof(stack)); + __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); + __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); + __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); + memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); + + setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); + for(i =3D 0; i < TARGET_NSIG_WORDS; i++) { + __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); + } + + setup_return(env, ka, &frame->retcode, frame_addr, usig, + frame_addr + offsetof(struct rt_sigframe_v1, retcode)); + + env->regs[1] =3D info_addr; + env->regs[2] =3D uc_addr; + + unlock_user_struct(frame, frame_addr, 1); + return; +sigsegv: + force_sigsegv(usig); +} + +static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUARMState *env) +{ + struct rt_sigframe_v2 *frame; + abi_ulong frame_addr =3D get_sigframe(ka, env, sizeof(*frame)); + abi_ulong info_addr, uc_addr; + + trace_user_setup_rt_frame(env, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto sigsegv; + } + + info_addr =3D frame_addr + offsetof(struct rt_sigframe_v2, info); + uc_addr =3D frame_addr + offsetof(struct rt_sigframe_v2, uc); + tswap_siginfo(&frame->info, info); + + setup_sigframe_v2(&frame->uc, set, env); + + setup_return(env, ka, &frame->retcode, frame_addr, usig, + frame_addr + offsetof(struct rt_sigframe_v2, retcode)); + + env->regs[1] =3D info_addr; + env->regs[2] =3D uc_addr; + + unlock_user_struct(frame, frame_addr, 1); + return; +sigsegv: + force_sigsegv(usig); +} + +void setup_rt_frame(int usig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUARMState *env) +{ + if (get_osversion() >=3D 0x020612) { + setup_rt_frame_v2(usig, ka, info, set, env); + } else { + setup_rt_frame_v1(usig, ka, info, set, env); + } +} + +static int +restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc) +{ + int err =3D 0; + uint32_t cpsr; + + __get_user(env->regs[0], &sc->arm_r0); + __get_user(env->regs[1], &sc->arm_r1); + __get_user(env->regs[2], &sc->arm_r2); + __get_user(env->regs[3], &sc->arm_r3); + __get_user(env->regs[4], &sc->arm_r4); + __get_user(env->regs[5], &sc->arm_r5); + __get_user(env->regs[6], &sc->arm_r6); + __get_user(env->regs[7], &sc->arm_r7); + __get_user(env->regs[8], &sc->arm_r8); + __get_user(env->regs[9], &sc->arm_r9); + __get_user(env->regs[10], &sc->arm_r10); + __get_user(env->regs[11], &sc->arm_fp); + __get_user(env->regs[12], &sc->arm_ip); + __get_user(env->regs[13], &sc->arm_sp); + __get_user(env->regs[14], &sc->arm_lr); + __get_user(env->regs[15], &sc->arm_pc); +#ifdef TARGET_CONFIG_CPU_32 + __get_user(cpsr, &sc->arm_cpsr); + cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr); +#endif + + err |=3D !valid_user_regs(env); + + return err; +} + +static long do_sigreturn_v1(CPUARMState *env) +{ + abi_ulong frame_addr; + struct sigframe_v1 *frame =3D NULL; + target_sigset_t set; + sigset_t host_set; + int i; + + /* + * Since we stacked the signal on a 64-bit boundary, + * then 'sp' should be word aligned here. If it's + * not, then the user is trying to mess with us. + */ + frame_addr =3D env->regs[13]; + trace_user_do_sigreturn(env, frame_addr); + if (frame_addr & 7) { + goto badframe; + } + + if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { + goto badframe; + } + + __get_user(set.sig[0], &frame->sc.oldmask); + for(i =3D 1; i < TARGET_NSIG_WORDS; i++) { + __get_user(set.sig[i], &frame->extramask[i - 1]); + } + + target_to_host_sigset_internal(&host_set, &set); + set_sigmask(&host_set); + + if (restore_sigcontext(env, &frame->sc)) { + goto badframe; + } + +#if 0 + /* Send SIGTRAP if we're single-stepping */ + if (ptrace_cancel_bpt(current)) + send_sig(SIGTRAP, current, 1); +#endif + unlock_user_struct(frame, frame_addr, 0); + return -TARGET_QEMU_ESIGRETURN; + +badframe: + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} + +static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *reg= space) +{ + int i; + abi_ulong magic, sz; + uint32_t fpscr, fpexc; + struct target_vfp_sigframe *vfpframe; + vfpframe =3D (struct target_vfp_sigframe *)regspace; + + __get_user(magic, &vfpframe->magic); + __get_user(sz, &vfpframe->size); + if (magic !=3D TARGET_VFP_MAGIC || sz !=3D sizeof(*vfpframe)) { + return 0; + } + for (i =3D 0; i < 32; i++) { + __get_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]); + } + __get_user(fpscr, &vfpframe->ufp.fpscr); + vfp_set_fpscr(env, fpscr); + __get_user(fpexc, &vfpframe->ufp_exc.fpexc); + /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid + * and the exception flag is cleared + */ + fpexc |=3D (1 << 30); + fpexc &=3D ~((1 << 31) | (1 << 28)); + env->vfp.xregs[ARM_VFP_FPEXC] =3D fpexc; + __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); + __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2= ); + return (abi_ulong*)(vfpframe + 1); +} + +static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env, + abi_ulong *regspace) +{ + int i; + abi_ulong magic, sz; + struct target_iwmmxt_sigframe *iwmmxtframe; + iwmmxtframe =3D (struct target_iwmmxt_sigframe *)regspace; + + __get_user(magic, &iwmmxtframe->magic); + __get_user(sz, &iwmmxtframe->size); + if (magic !=3D TARGET_IWMMXT_MAGIC || sz !=3D sizeof(*iwmmxtframe)) { + return 0; + } + for (i =3D 0; i < 16; i++) { + __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); + } + __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); + __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); + __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); + __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); + __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); + __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); + return (abi_ulong*)(iwmmxtframe + 1); +} + +static int do_sigframe_return_v2(CPUARMState *env, + target_ulong context_addr, + struct target_ucontext_v2 *uc) +{ + sigset_t host_set; + abi_ulong *regspace; + + target_to_host_sigset(&host_set, &uc->tuc_sigmask); + set_sigmask(&host_set); + + if (restore_sigcontext(env, &uc->tuc_mcontext)) + return 1; + + /* Restore coprocessor signal frame */ + regspace =3D uc->tuc_regspace; + if (arm_feature(env, ARM_FEATURE_VFP)) { + regspace =3D restore_sigframe_v2_vfp(env, regspace); + if (!regspace) { + return 1; + } + } + if (arm_feature(env, ARM_FEATURE_IWMMXT)) { + regspace =3D restore_sigframe_v2_iwmmxt(env, regspace); + if (!regspace) { + return 1; + } + } + + if (do_sigaltstack(context_addr + + offsetof(struct target_ucontext_v2, tuc_stack), + 0, get_sp_from_cpustate(env)) =3D=3D -EFAULT) { + return 1; + } + +#if 0 + /* Send SIGTRAP if we're single-stepping */ + if (ptrace_cancel_bpt(current)) + send_sig(SIGTRAP, current, 1); +#endif + + return 0; +} + +static long do_sigreturn_v2(CPUARMState *env) +{ + abi_ulong frame_addr; + struct sigframe_v2 *frame =3D NULL; + + /* + * Since we stacked the signal on a 64-bit boundary, + * then 'sp' should be word aligned here. If it's + * not, then the user is trying to mess with us. + */ + frame_addr =3D env->regs[13]; + trace_user_do_sigreturn(env, frame_addr); + if (frame_addr & 7) { + goto badframe; + } + + if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { + goto badframe; + } + + if (do_sigframe_return_v2(env, + frame_addr + + offsetof(struct sigframe_v2, uc), + &frame->uc)) { + goto badframe; + } + + unlock_user_struct(frame, frame_addr, 0); + return -TARGET_QEMU_ESIGRETURN; + +badframe: + unlock_user_struct(frame, frame_addr, 0); + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} + +long do_sigreturn(CPUARMState *env) +{ + if (get_osversion() >=3D 0x020612) { + return do_sigreturn_v2(env); + } else { + return do_sigreturn_v1(env); + } +} + +static long do_rt_sigreturn_v1(CPUARMState *env) +{ + abi_ulong frame_addr; + struct rt_sigframe_v1 *frame =3D NULL; + sigset_t host_set; + + /* + * Since we stacked the signal on a 64-bit boundary, + * then 'sp' should be word aligned here. If it's + * not, then the user is trying to mess with us. + */ + frame_addr =3D env->regs[13]; + trace_user_do_rt_sigreturn(env, frame_addr); + if (frame_addr & 7) { + goto badframe; + } + + if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { + goto badframe; + } + + target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); + set_sigmask(&host_set); + + if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { + goto badframe; + } + + if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc= _stack), 0, get_sp_from_cpustate(env)) =3D=3D -EFAULT) + goto badframe; + +#if 0 + /* Send SIGTRAP if we're single-stepping */ + if (ptrace_cancel_bpt(current)) + send_sig(SIGTRAP, current, 1); +#endif + unlock_user_struct(frame, frame_addr, 0); + return -TARGET_QEMU_ESIGRETURN; + +badframe: + unlock_user_struct(frame, frame_addr, 0); + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} + +static long do_rt_sigreturn_v2(CPUARMState *env) +{ + abi_ulong frame_addr; + struct rt_sigframe_v2 *frame =3D NULL; + + /* + * Since we stacked the signal on a 64-bit boundary, + * then 'sp' should be word aligned here. If it's + * not, then the user is trying to mess with us. + */ + frame_addr =3D env->regs[13]; + trace_user_do_rt_sigreturn(env, frame_addr); + if (frame_addr & 7) { + goto badframe; + } + + if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { + goto badframe; + } + + if (do_sigframe_return_v2(env, + frame_addr + + offsetof(struct rt_sigframe_v2, uc), + &frame->uc)) { + goto badframe; + } + + unlock_user_struct(frame, frame_addr, 0); + return -TARGET_QEMU_ESIGRETURN; + +badframe: + unlock_user_struct(frame, frame_addr, 0); + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} + +long do_rt_sigreturn(CPUARMState *env) +{ + if (get_osversion() >=3D 0x020612) { + return do_rt_sigreturn_v2(env); + } else { + return do_rt_sigreturn_v1(env); + } +} diff --git a/linux-user/arm/target_signal.h b/linux-user/arm/target_signal.h index cbbeb09f4d..4b542c324f 100644 --- a/linux-user/arm/target_signal.h +++ b/linux-user/arm/target_signal.h @@ -26,5 +26,9 @@ static inline abi_ulong get_sp_from_cpustate(CPUARMState = *state) return state->regs[13]; } =20 - +void setup_frame(int usig, struct target_sigaction *ka, + target_sigset_t *set, CPUARMState *regs); +void setup_rt_frame(int usig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUARMState *env); #endif /* ARM_TARGET_SIGNAL_H */ diff --git a/linux-user/signal.c b/linux-user/signal.c index fcfa023d42..c99eae15d6 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -1383,757 +1383,6 @@ badframe: return -TARGET_QEMU_ESIGRETURN; } =20 -#elif defined(TARGET_ARM) && !defined(TARGET_AARCH64) - -struct target_sigcontext { - abi_ulong trap_no; - abi_ulong error_code; - abi_ulong oldmask; - abi_ulong arm_r0; - abi_ulong arm_r1; - abi_ulong arm_r2; - abi_ulong arm_r3; - abi_ulong arm_r4; - abi_ulong arm_r5; - abi_ulong arm_r6; - abi_ulong arm_r7; - abi_ulong arm_r8; - abi_ulong arm_r9; - abi_ulong arm_r10; - abi_ulong arm_fp; - abi_ulong arm_ip; - abi_ulong arm_sp; - abi_ulong arm_lr; - abi_ulong arm_pc; - abi_ulong arm_cpsr; - abi_ulong fault_address; -}; - -struct target_ucontext_v1 { - abi_ulong tuc_flags; - abi_ulong tuc_link; - target_stack_t tuc_stack; - struct target_sigcontext tuc_mcontext; - target_sigset_t tuc_sigmask; /* mask last for extensibility */ -}; - -struct target_ucontext_v2 { - abi_ulong tuc_flags; - abi_ulong tuc_link; - target_stack_t tuc_stack; - struct target_sigcontext tuc_mcontext; - target_sigset_t tuc_sigmask; /* mask last for extensibility */ - char __unused[128 - sizeof(target_sigset_t)]; - abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); -}; - -struct target_user_vfp { - uint64_t fpregs[32]; - abi_ulong fpscr; -}; - -struct target_user_vfp_exc { - abi_ulong fpexc; - abi_ulong fpinst; - abi_ulong fpinst2; -}; - -struct target_vfp_sigframe { - abi_ulong magic; - abi_ulong size; - struct target_user_vfp ufp; - struct target_user_vfp_exc ufp_exc; -} __attribute__((__aligned__(8))); - -struct target_iwmmxt_sigframe { - abi_ulong magic; - abi_ulong size; - uint64_t regs[16]; - /* Note that not all the coprocessor control registers are stored here= */ - uint32_t wcssf; - uint32_t wcasf; - uint32_t wcgr0; - uint32_t wcgr1; - uint32_t wcgr2; - uint32_t wcgr3; -} __attribute__((__aligned__(8))); - -#define TARGET_VFP_MAGIC 0x56465001 -#define TARGET_IWMMXT_MAGIC 0x12ef842a - -struct sigframe_v1 -{ - struct target_sigcontext sc; - abi_ulong extramask[TARGET_NSIG_WORDS-1]; - abi_ulong retcode; -}; - -struct sigframe_v2 -{ - struct target_ucontext_v2 uc; - abi_ulong retcode; -}; - -struct rt_sigframe_v1 -{ - abi_ulong pinfo; - abi_ulong puc; - struct target_siginfo info; - struct target_ucontext_v1 uc; - abi_ulong retcode; -}; - -struct rt_sigframe_v2 -{ - struct target_siginfo info; - struct target_ucontext_v2 uc; - abi_ulong retcode; -}; - -#define TARGET_CONFIG_CPU_32 1 - -/* - * For ARM syscalls, we encode the syscall number into the instruction. - */ -#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_B= ASE)) -#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYS= CALL_BASE)) - -/* - * For Thumb syscalls, we pass the syscall number via r7. We therefore - * need two 16-bit instructions. - */ -#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) -#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigr= eturn)) - -static const abi_ulong retcodes[4] =3D { - SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, - SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN -}; - - -static inline int valid_user_regs(CPUARMState *regs) -{ - return 1; -} - -static void -setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,= */ - CPUARMState *env, abi_ulong mask) -{ - __put_user(env->regs[0], &sc->arm_r0); - __put_user(env->regs[1], &sc->arm_r1); - __put_user(env->regs[2], &sc->arm_r2); - __put_user(env->regs[3], &sc->arm_r3); - __put_user(env->regs[4], &sc->arm_r4); - __put_user(env->regs[5], &sc->arm_r5); - __put_user(env->regs[6], &sc->arm_r6); - __put_user(env->regs[7], &sc->arm_r7); - __put_user(env->regs[8], &sc->arm_r8); - __put_user(env->regs[9], &sc->arm_r9); - __put_user(env->regs[10], &sc->arm_r10); - __put_user(env->regs[11], &sc->arm_fp); - __put_user(env->regs[12], &sc->arm_ip); - __put_user(env->regs[13], &sc->arm_sp); - __put_user(env->regs[14], &sc->arm_lr); - __put_user(env->regs[15], &sc->arm_pc); -#ifdef TARGET_CONFIG_CPU_32 - __put_user(cpsr_read(env), &sc->arm_cpsr); -#endif - - __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); - __put_user(/* current->thread.error_code */ 0, &sc->error_code); - __put_user(/* current->thread.address */ 0, &sc->fault_address); - __put_user(mask, &sc->oldmask); -} - -static inline abi_ulong -get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize) -{ - unsigned long sp =3D regs->regs[13]; - - /* - * This is the X/Open sanctioned signal stack switching. - */ - if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) { - sp =3D target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_= size; - } - /* - * ATPCS B01 mandates 8-byte alignment - */ - return (sp - framesize) & ~7; -} - -static void -setup_return(CPUARMState *env, struct target_sigaction *ka, - abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_a= ddr) -{ - abi_ulong handler =3D ka->_sa_handler; - abi_ulong retcode; - int thumb =3D handler & 1; - uint32_t cpsr =3D cpsr_read(env); - - cpsr &=3D ~CPSR_IT; - if (thumb) { - cpsr |=3D CPSR_T; - } else { - cpsr &=3D ~CPSR_T; - } - - if (ka->sa_flags & TARGET_SA_RESTORER) { - retcode =3D ka->sa_restorer; - } else { - unsigned int idx =3D thumb; - - if (ka->sa_flags & TARGET_SA_SIGINFO) { - idx +=3D 2; - } - - __put_user(retcodes[idx], rc); - - retcode =3D rc_addr + thumb; - } - - env->regs[0] =3D usig; - env->regs[13] =3D frame_addr; - env->regs[14] =3D retcode; - env->regs[15] =3D handler & (thumb ? ~1 : ~3); - cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr); -} - -static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *= env) -{ - int i; - struct target_vfp_sigframe *vfpframe; - vfpframe =3D (struct target_vfp_sigframe *)regspace; - __put_user(TARGET_VFP_MAGIC, &vfpframe->magic); - __put_user(sizeof(*vfpframe), &vfpframe->size); - for (i =3D 0; i < 32; i++) { - __put_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]); - } - __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr); - __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc); - __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); - __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2= ); - return (abi_ulong*)(vfpframe+1); -} - -static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, - CPUARMState *env) -{ - int i; - struct target_iwmmxt_sigframe *iwmmxtframe; - iwmmxtframe =3D (struct target_iwmmxt_sigframe *)regspace; - __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic); - __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size); - for (i =3D 0; i < 16; i++) { - __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); - } - __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); - __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); - __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); - __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); - __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); - __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); - return (abi_ulong*)(iwmmxtframe+1); -} - -static void setup_sigframe_v2(struct target_ucontext_v2 *uc, - target_sigset_t *set, CPUARMState *env) -{ - struct target_sigaltstack stack; - int i; - abi_ulong *regspace; - - /* Clear all the bits of the ucontext we don't use. */ - memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); - - memset(&stack, 0, sizeof(stack)); - __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); - __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); - __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); - memcpy(&uc->tuc_stack, &stack, sizeof(stack)); - - setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); - /* Save coprocessor signal frame. */ - regspace =3D uc->tuc_regspace; - if (arm_feature(env, ARM_FEATURE_VFP)) { - regspace =3D setup_sigframe_v2_vfp(regspace, env); - } - if (arm_feature(env, ARM_FEATURE_IWMMXT)) { - regspace =3D setup_sigframe_v2_iwmmxt(regspace, env); - } - - /* Write terminating magic word */ - __put_user(0, regspace); - - for(i =3D 0; i < TARGET_NSIG_WORDS; i++) { - __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); - } -} - -/* compare linux/arch/arm/kernel/signal.c:setup_frame() */ -static void setup_frame_v1(int usig, struct target_sigaction *ka, - target_sigset_t *set, CPUARMState *regs) -{ - struct sigframe_v1 *frame; - abi_ulong frame_addr =3D get_sigframe(ka, regs, sizeof(*frame)); - int i; - - trace_user_setup_frame(regs, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { - goto sigsegv; - } - - setup_sigcontext(&frame->sc, regs, set->sig[0]); - - for(i =3D 1; i < TARGET_NSIG_WORDS; i++) { - __put_user(set->sig[i], &frame->extramask[i - 1]); - } - - setup_return(regs, ka, &frame->retcode, frame_addr, usig, - frame_addr + offsetof(struct sigframe_v1, retcode)); - - unlock_user_struct(frame, frame_addr, 1); - return; -sigsegv: - force_sigsegv(usig); -} - -static void setup_frame_v2(int usig, struct target_sigaction *ka, - target_sigset_t *set, CPUARMState *regs) -{ - struct sigframe_v2 *frame; - abi_ulong frame_addr =3D get_sigframe(ka, regs, sizeof(*frame)); - - trace_user_setup_frame(regs, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { - goto sigsegv; - } - - setup_sigframe_v2(&frame->uc, set, regs); - - setup_return(regs, ka, &frame->retcode, frame_addr, usig, - frame_addr + offsetof(struct sigframe_v2, retcode)); - - unlock_user_struct(frame, frame_addr, 1); - return; -sigsegv: - force_sigsegv(usig); -} - -static void setup_frame(int usig, struct target_sigaction *ka, - target_sigset_t *set, CPUARMState *regs) -{ - if (get_osversion() >=3D 0x020612) { - setup_frame_v2(usig, ka, set, regs); - } else { - setup_frame_v1(usig, ka, set, regs); - } -} - -/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ -static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, - target_siginfo_t *info, - target_sigset_t *set, CPUARMState *env) -{ - struct rt_sigframe_v1 *frame; - abi_ulong frame_addr =3D get_sigframe(ka, env, sizeof(*frame)); - struct target_sigaltstack stack; - int i; - abi_ulong info_addr, uc_addr; - - trace_user_setup_rt_frame(env, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { - goto sigsegv; - } - - info_addr =3D frame_addr + offsetof(struct rt_sigframe_v1, info); - __put_user(info_addr, &frame->pinfo); - uc_addr =3D frame_addr + offsetof(struct rt_sigframe_v1, uc); - __put_user(uc_addr, &frame->puc); - tswap_siginfo(&frame->info, info); - - /* Clear all the bits of the ucontext we don't use. */ - memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext= )); - - memset(&stack, 0, sizeof(stack)); - __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); - __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); - __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); - memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); - - setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); - for(i =3D 0; i < TARGET_NSIG_WORDS; i++) { - __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); - } - - setup_return(env, ka, &frame->retcode, frame_addr, usig, - frame_addr + offsetof(struct rt_sigframe_v1, retcode)); - - env->regs[1] =3D info_addr; - env->regs[2] =3D uc_addr; - - unlock_user_struct(frame, frame_addr, 1); - return; -sigsegv: - force_sigsegv(usig); -} - -static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, - target_siginfo_t *info, - target_sigset_t *set, CPUARMState *env) -{ - struct rt_sigframe_v2 *frame; - abi_ulong frame_addr =3D get_sigframe(ka, env, sizeof(*frame)); - abi_ulong info_addr, uc_addr; - - trace_user_setup_rt_frame(env, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { - goto sigsegv; - } - - info_addr =3D frame_addr + offsetof(struct rt_sigframe_v2, info); - uc_addr =3D frame_addr + offsetof(struct rt_sigframe_v2, uc); - tswap_siginfo(&frame->info, info); - - setup_sigframe_v2(&frame->uc, set, env); - - setup_return(env, ka, &frame->retcode, frame_addr, usig, - frame_addr + offsetof(struct rt_sigframe_v2, retcode)); - - env->regs[1] =3D info_addr; - env->regs[2] =3D uc_addr; - - unlock_user_struct(frame, frame_addr, 1); - return; -sigsegv: - force_sigsegv(usig); -} - -static void setup_rt_frame(int usig, struct target_sigaction *ka, - target_siginfo_t *info, - target_sigset_t *set, CPUARMState *env) -{ - if (get_osversion() >=3D 0x020612) { - setup_rt_frame_v2(usig, ka, info, set, env); - } else { - setup_rt_frame_v1(usig, ka, info, set, env); - } -} - -static int -restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc) -{ - int err =3D 0; - uint32_t cpsr; - - __get_user(env->regs[0], &sc->arm_r0); - __get_user(env->regs[1], &sc->arm_r1); - __get_user(env->regs[2], &sc->arm_r2); - __get_user(env->regs[3], &sc->arm_r3); - __get_user(env->regs[4], &sc->arm_r4); - __get_user(env->regs[5], &sc->arm_r5); - __get_user(env->regs[6], &sc->arm_r6); - __get_user(env->regs[7], &sc->arm_r7); - __get_user(env->regs[8], &sc->arm_r8); - __get_user(env->regs[9], &sc->arm_r9); - __get_user(env->regs[10], &sc->arm_r10); - __get_user(env->regs[11], &sc->arm_fp); - __get_user(env->regs[12], &sc->arm_ip); - __get_user(env->regs[13], &sc->arm_sp); - __get_user(env->regs[14], &sc->arm_lr); - __get_user(env->regs[15], &sc->arm_pc); -#ifdef TARGET_CONFIG_CPU_32 - __get_user(cpsr, &sc->arm_cpsr); - cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr); -#endif - - err |=3D !valid_user_regs(env); - - return err; -} - -static long do_sigreturn_v1(CPUARMState *env) -{ - abi_ulong frame_addr; - struct sigframe_v1 *frame =3D NULL; - target_sigset_t set; - sigset_t host_set; - int i; - - /* - * Since we stacked the signal on a 64-bit boundary, - * then 'sp' should be word aligned here. If it's - * not, then the user is trying to mess with us. - */ - frame_addr =3D env->regs[13]; - trace_user_do_sigreturn(env, frame_addr); - if (frame_addr & 7) { - goto badframe; - } - - if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { - goto badframe; - } - - __get_user(set.sig[0], &frame->sc.oldmask); - for(i =3D 1; i < TARGET_NSIG_WORDS; i++) { - __get_user(set.sig[i], &frame->extramask[i - 1]); - } - - target_to_host_sigset_internal(&host_set, &set); - set_sigmask(&host_set); - - if (restore_sigcontext(env, &frame->sc)) { - goto badframe; - } - -#if 0 - /* Send SIGTRAP if we're single-stepping */ - if (ptrace_cancel_bpt(current)) - send_sig(SIGTRAP, current, 1); -#endif - unlock_user_struct(frame, frame_addr, 0); - return -TARGET_QEMU_ESIGRETURN; - -badframe: - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - -static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *reg= space) -{ - int i; - abi_ulong magic, sz; - uint32_t fpscr, fpexc; - struct target_vfp_sigframe *vfpframe; - vfpframe =3D (struct target_vfp_sigframe *)regspace; - - __get_user(magic, &vfpframe->magic); - __get_user(sz, &vfpframe->size); - if (magic !=3D TARGET_VFP_MAGIC || sz !=3D sizeof(*vfpframe)) { - return 0; - } - for (i =3D 0; i < 32; i++) { - __get_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]); - } - __get_user(fpscr, &vfpframe->ufp.fpscr); - vfp_set_fpscr(env, fpscr); - __get_user(fpexc, &vfpframe->ufp_exc.fpexc); - /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid - * and the exception flag is cleared - */ - fpexc |=3D (1 << 30); - fpexc &=3D ~((1 << 31) | (1 << 28)); - env->vfp.xregs[ARM_VFP_FPEXC] =3D fpexc; - __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); - __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2= ); - return (abi_ulong*)(vfpframe + 1); -} - -static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env, - abi_ulong *regspace) -{ - int i; - abi_ulong magic, sz; - struct target_iwmmxt_sigframe *iwmmxtframe; - iwmmxtframe =3D (struct target_iwmmxt_sigframe *)regspace; - - __get_user(magic, &iwmmxtframe->magic); - __get_user(sz, &iwmmxtframe->size); - if (magic !=3D TARGET_IWMMXT_MAGIC || sz !=3D sizeof(*iwmmxtframe)) { - return 0; - } - for (i =3D 0; i < 16; i++) { - __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); - } - __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); - __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); - __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); - __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); - __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); - __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); - return (abi_ulong*)(iwmmxtframe + 1); -} - -static int do_sigframe_return_v2(CPUARMState *env, - target_ulong context_addr, - struct target_ucontext_v2 *uc) -{ - sigset_t host_set; - abi_ulong *regspace; - - target_to_host_sigset(&host_set, &uc->tuc_sigmask); - set_sigmask(&host_set); - - if (restore_sigcontext(env, &uc->tuc_mcontext)) - return 1; - - /* Restore coprocessor signal frame */ - regspace =3D uc->tuc_regspace; - if (arm_feature(env, ARM_FEATURE_VFP)) { - regspace =3D restore_sigframe_v2_vfp(env, regspace); - if (!regspace) { - return 1; - } - } - if (arm_feature(env, ARM_FEATURE_IWMMXT)) { - regspace =3D restore_sigframe_v2_iwmmxt(env, regspace); - if (!regspace) { - return 1; - } - } - - if (do_sigaltstack(context_addr - + offsetof(struct target_ucontext_v2, tuc_stack), - 0, get_sp_from_cpustate(env)) =3D=3D -EFAULT) { - return 1; - } - -#if 0 - /* Send SIGTRAP if we're single-stepping */ - if (ptrace_cancel_bpt(current)) - send_sig(SIGTRAP, current, 1); -#endif - - return 0; -} - -static long do_sigreturn_v2(CPUARMState *env) -{ - abi_ulong frame_addr; - struct sigframe_v2 *frame =3D NULL; - - /* - * Since we stacked the signal on a 64-bit boundary, - * then 'sp' should be word aligned here. If it's - * not, then the user is trying to mess with us. - */ - frame_addr =3D env->regs[13]; - trace_user_do_sigreturn(env, frame_addr); - if (frame_addr & 7) { - goto badframe; - } - - if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { - goto badframe; - } - - if (do_sigframe_return_v2(env, - frame_addr - + offsetof(struct sigframe_v2, uc), - &frame->uc)) { - goto badframe; - } - - unlock_user_struct(frame, frame_addr, 0); - return -TARGET_QEMU_ESIGRETURN; - -badframe: - unlock_user_struct(frame, frame_addr, 0); - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - -long do_sigreturn(CPUARMState *env) -{ - if (get_osversion() >=3D 0x020612) { - return do_sigreturn_v2(env); - } else { - return do_sigreturn_v1(env); - } -} - -static long do_rt_sigreturn_v1(CPUARMState *env) -{ - abi_ulong frame_addr; - struct rt_sigframe_v1 *frame =3D NULL; - sigset_t host_set; - - /* - * Since we stacked the signal on a 64-bit boundary, - * then 'sp' should be word aligned here. If it's - * not, then the user is trying to mess with us. - */ - frame_addr =3D env->regs[13]; - trace_user_do_rt_sigreturn(env, frame_addr); - if (frame_addr & 7) { - goto badframe; - } - - if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { - goto badframe; - } - - target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); - set_sigmask(&host_set); - - if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { - goto badframe; - } - - if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc= _stack), 0, get_sp_from_cpustate(env)) =3D=3D -EFAULT) - goto badframe; - -#if 0 - /* Send SIGTRAP if we're single-stepping */ - if (ptrace_cancel_bpt(current)) - send_sig(SIGTRAP, current, 1); -#endif - unlock_user_struct(frame, frame_addr, 0); - return -TARGET_QEMU_ESIGRETURN; - -badframe: - unlock_user_struct(frame, frame_addr, 0); - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - -static long do_rt_sigreturn_v2(CPUARMState *env) -{ - abi_ulong frame_addr; - struct rt_sigframe_v2 *frame =3D NULL; - - /* - * Since we stacked the signal on a 64-bit boundary, - * then 'sp' should be word aligned here. If it's - * not, then the user is trying to mess with us. - */ - frame_addr =3D env->regs[13]; - trace_user_do_rt_sigreturn(env, frame_addr); - if (frame_addr & 7) { - goto badframe; - } - - if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { - goto badframe; - } - - if (do_sigframe_return_v2(env, - frame_addr - + offsetof(struct rt_sigframe_v2, uc), - &frame->uc)) { - goto badframe; - } - - unlock_user_struct(frame, frame_addr, 0); - return -TARGET_QEMU_ESIGRETURN; - -badframe: - unlock_user_struct(frame, frame_addr, 0); - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - -long do_rt_sigreturn(CPUARMState *env) -{ - if (get_osversion() >=3D 0x020612) { - return do_rt_sigreturn_v2(env); - } else { - return do_rt_sigreturn_v1(env); - } -} - #elif defined(TARGET_SPARC) =20 #define __SUNOS_MAXWIN 31 --=20 2.14.3