From 6aa72d7e3ce39c02f808436dbef5533fdb037e1b Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Tue, 24 Apr 2018 21:26:21 +0200 Subject: [PATCH] linux-user: move cris signal.c parts to cris directory MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit No code change, only move code from signal.c to cris/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier Reviewed-by: Alex Bennée Reviewed-by: Richard Henderson Message-Id: <20180424192635.6027-7-laurent@vivier.eu> --- linux-user/cris/signal.c | 171 ++++++++++++++++++++++++++++++++ linux-user/cris/target_signal.h | 6 +- linux-user/signal.c | 168 ------------------------------- 3 files changed, 176 insertions(+), 169 deletions(-) diff --git a/linux-user/cris/signal.c b/linux-user/cris/signal.c index 02ca338b6c..322d9db1a7 100644 --- a/linux-user/cris/signal.c +++ b/linux-user/cris/signal.c @@ -16,3 +16,174 @@ * 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 { + struct target_pt_regs regs; /* needs to be first */ + uint32_t oldmask; + uint32_t usp; /* usp before stacking this gunk on it */ +}; + +/* Signal frames. */ +struct target_signal_frame { + struct target_sigcontext sc; + uint32_t extramask[TARGET_NSIG_WORDS - 1]; + uint16_t retcode[4]; /* Trampoline code. */ +}; + +struct rt_signal_frame { + siginfo_t *pinfo; + void *puc; + siginfo_t info; + ucontext_t uc; + uint16_t retcode[4]; /* Trampoline code. */ +}; + +static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) +{ + __put_user(env->regs[0], &sc->regs.r0); + __put_user(env->regs[1], &sc->regs.r1); + __put_user(env->regs[2], &sc->regs.r2); + __put_user(env->regs[3], &sc->regs.r3); + __put_user(env->regs[4], &sc->regs.r4); + __put_user(env->regs[5], &sc->regs.r5); + __put_user(env->regs[6], &sc->regs.r6); + __put_user(env->regs[7], &sc->regs.r7); + __put_user(env->regs[8], &sc->regs.r8); + __put_user(env->regs[9], &sc->regs.r9); + __put_user(env->regs[10], &sc->regs.r10); + __put_user(env->regs[11], &sc->regs.r11); + __put_user(env->regs[12], &sc->regs.r12); + __put_user(env->regs[13], &sc->regs.r13); + __put_user(env->regs[14], &sc->usp); + __put_user(env->regs[15], &sc->regs.acr); + __put_user(env->pregs[PR_MOF], &sc->regs.mof); + __put_user(env->pregs[PR_SRP], &sc->regs.srp); + __put_user(env->pc, &sc->regs.erp); +} + +static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) +{ + __get_user(env->regs[0], &sc->regs.r0); + __get_user(env->regs[1], &sc->regs.r1); + __get_user(env->regs[2], &sc->regs.r2); + __get_user(env->regs[3], &sc->regs.r3); + __get_user(env->regs[4], &sc->regs.r4); + __get_user(env->regs[5], &sc->regs.r5); + __get_user(env->regs[6], &sc->regs.r6); + __get_user(env->regs[7], &sc->regs.r7); + __get_user(env->regs[8], &sc->regs.r8); + __get_user(env->regs[9], &sc->regs.r9); + __get_user(env->regs[10], &sc->regs.r10); + __get_user(env->regs[11], &sc->regs.r11); + __get_user(env->regs[12], &sc->regs.r12); + __get_user(env->regs[13], &sc->regs.r13); + __get_user(env->regs[14], &sc->usp); + __get_user(env->regs[15], &sc->regs.acr); + __get_user(env->pregs[PR_MOF], &sc->regs.mof); + __get_user(env->pregs[PR_SRP], &sc->regs.srp); + __get_user(env->pc, &sc->regs.erp); +} + +static abi_ulong get_sigframe(CPUCRISState *env, int framesize) +{ + abi_ulong sp; + /* Align the stack downwards to 4. */ + sp = (env->regs[R_SP] & ~3); + return sp - framesize; +} + +void setup_frame(int sig, struct target_sigaction *ka, + target_sigset_t *set, CPUCRISState *env) +{ + struct target_signal_frame *frame; + abi_ulong frame_addr; + int i; + + frame_addr = get_sigframe(env, sizeof *frame); + trace_user_setup_frame(env, frame_addr); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) + goto badframe; + + /* + * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't + * use this trampoline anymore but it sets it up for GDB. + * In QEMU, using the trampoline simplifies things a bit so we use it. + * + * This is movu.w __NR_sigreturn, r9; break 13; + */ + __put_user(0x9c5f, frame->retcode+0); + __put_user(TARGET_NR_sigreturn, + frame->retcode + 1); + __put_user(0xe93d, frame->retcode + 2); + + /* Save the mask. */ + __put_user(set->sig[0], &frame->sc.oldmask); + + for(i = 1; i < TARGET_NSIG_WORDS; i++) { + __put_user(set->sig[i], &frame->extramask[i - 1]); + } + + setup_sigcontext(&frame->sc, env); + + /* Move the stack and setup the arguments for the handler. */ + env->regs[R_SP] = frame_addr; + env->regs[10] = sig; + env->pc = (unsigned long) ka->_sa_handler; + /* Link SRP so the guest returns through the trampoline. */ + env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode); + + unlock_user_struct(frame, frame_addr, 1); + return; +badframe: + force_sigsegv(sig); +} + +void setup_rt_frame(int sig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUCRISState *env) +{ + fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); +} + +long do_sigreturn(CPUCRISState *env) +{ + struct target_signal_frame *frame; + abi_ulong frame_addr; + target_sigset_t target_set; + sigset_t set; + int i; + + frame_addr = env->regs[R_SP]; + trace_user_do_sigreturn(env, frame_addr); + /* Make sure the guest isn't playing games. */ + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) { + goto badframe; + } + + /* Restore blocked signals */ + __get_user(target_set.sig[0], &frame->sc.oldmask); + for(i = 1; i < TARGET_NSIG_WORDS; i++) { + __get_user(target_set.sig[i], &frame->extramask[i - 1]); + } + target_to_host_sigset_internal(&set, &target_set); + set_sigmask(&set); + + restore_sigcontext(&frame->sc, env); + unlock_user_struct(frame, frame_addr, 0); + return -TARGET_QEMU_ESIGRETURN; +badframe: + force_sig(TARGET_SIGSEGV); + return -TARGET_QEMU_ESIGRETURN; +} + +long do_rt_sigreturn(CPUCRISState *env) +{ + trace_user_do_rt_sigreturn(env, 0); + fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); + return -TARGET_ENOSYS; +} diff --git a/linux-user/cris/target_signal.h b/linux-user/cris/target_signal.h index 664621bbcd..19c0d7b539 100644 --- a/linux-user/cris/target_signal.h +++ b/linux-user/cris/target_signal.h @@ -26,5 +26,9 @@ static inline abi_ulong get_sp_from_cpustate(CPUCRISState *state) return state->regs[14]; } - +void setup_frame(int sig, struct target_sigaction *ka, + target_sigset_t *set, CPUCRISState *env); +void setup_rt_frame(int sig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUCRISState *env); #endif /* CRIS_TARGET_SIGNAL_H */ diff --git a/linux-user/signal.c b/linux-user/signal.c index 546311221b..3f3fd05822 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -2364,174 +2364,6 @@ badframe: return -TARGET_QEMU_ESIGRETURN; } -#elif defined(TARGET_CRIS) - -struct target_sigcontext { - struct target_pt_regs regs; /* needs to be first */ - uint32_t oldmask; - uint32_t usp; /* usp before stacking this gunk on it */ -}; - -/* Signal frames. */ -struct target_signal_frame { - struct target_sigcontext sc; - uint32_t extramask[TARGET_NSIG_WORDS - 1]; - uint16_t retcode[4]; /* Trampoline code. */ -}; - -struct rt_signal_frame { - siginfo_t *pinfo; - void *puc; - siginfo_t info; - ucontext_t uc; - uint16_t retcode[4]; /* Trampoline code. */ -}; - -static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) -{ - __put_user(env->regs[0], &sc->regs.r0); - __put_user(env->regs[1], &sc->regs.r1); - __put_user(env->regs[2], &sc->regs.r2); - __put_user(env->regs[3], &sc->regs.r3); - __put_user(env->regs[4], &sc->regs.r4); - __put_user(env->regs[5], &sc->regs.r5); - __put_user(env->regs[6], &sc->regs.r6); - __put_user(env->regs[7], &sc->regs.r7); - __put_user(env->regs[8], &sc->regs.r8); - __put_user(env->regs[9], &sc->regs.r9); - __put_user(env->regs[10], &sc->regs.r10); - __put_user(env->regs[11], &sc->regs.r11); - __put_user(env->regs[12], &sc->regs.r12); - __put_user(env->regs[13], &sc->regs.r13); - __put_user(env->regs[14], &sc->usp); - __put_user(env->regs[15], &sc->regs.acr); - __put_user(env->pregs[PR_MOF], &sc->regs.mof); - __put_user(env->pregs[PR_SRP], &sc->regs.srp); - __put_user(env->pc, &sc->regs.erp); -} - -static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) -{ - __get_user(env->regs[0], &sc->regs.r0); - __get_user(env->regs[1], &sc->regs.r1); - __get_user(env->regs[2], &sc->regs.r2); - __get_user(env->regs[3], &sc->regs.r3); - __get_user(env->regs[4], &sc->regs.r4); - __get_user(env->regs[5], &sc->regs.r5); - __get_user(env->regs[6], &sc->regs.r6); - __get_user(env->regs[7], &sc->regs.r7); - __get_user(env->regs[8], &sc->regs.r8); - __get_user(env->regs[9], &sc->regs.r9); - __get_user(env->regs[10], &sc->regs.r10); - __get_user(env->regs[11], &sc->regs.r11); - __get_user(env->regs[12], &sc->regs.r12); - __get_user(env->regs[13], &sc->regs.r13); - __get_user(env->regs[14], &sc->usp); - __get_user(env->regs[15], &sc->regs.acr); - __get_user(env->pregs[PR_MOF], &sc->regs.mof); - __get_user(env->pregs[PR_SRP], &sc->regs.srp); - __get_user(env->pc, &sc->regs.erp); -} - -static abi_ulong get_sigframe(CPUCRISState *env, int framesize) -{ - abi_ulong sp; - /* Align the stack downwards to 4. */ - sp = (env->regs[R_SP] & ~3); - return sp - framesize; -} - -static void setup_frame(int sig, struct target_sigaction *ka, - target_sigset_t *set, CPUCRISState *env) -{ - struct target_signal_frame *frame; - abi_ulong frame_addr; - int i; - - frame_addr = get_sigframe(env, sizeof *frame); - trace_user_setup_frame(env, frame_addr); - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) - goto badframe; - - /* - * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't - * use this trampoline anymore but it sets it up for GDB. - * In QEMU, using the trampoline simplifies things a bit so we use it. - * - * This is movu.w __NR_sigreturn, r9; break 13; - */ - __put_user(0x9c5f, frame->retcode+0); - __put_user(TARGET_NR_sigreturn, - frame->retcode + 1); - __put_user(0xe93d, frame->retcode + 2); - - /* Save the mask. */ - __put_user(set->sig[0], &frame->sc.oldmask); - - for(i = 1; i < TARGET_NSIG_WORDS; i++) { - __put_user(set->sig[i], &frame->extramask[i - 1]); - } - - setup_sigcontext(&frame->sc, env); - - /* Move the stack and setup the arguments for the handler. */ - env->regs[R_SP] = frame_addr; - env->regs[10] = sig; - env->pc = (unsigned long) ka->_sa_handler; - /* Link SRP so the guest returns through the trampoline. */ - env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode); - - unlock_user_struct(frame, frame_addr, 1); - return; -badframe: - force_sigsegv(sig); -} - -static void setup_rt_frame(int sig, struct target_sigaction *ka, - target_siginfo_t *info, - target_sigset_t *set, CPUCRISState *env) -{ - fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); -} - -long do_sigreturn(CPUCRISState *env) -{ - struct target_signal_frame *frame; - abi_ulong frame_addr; - target_sigset_t target_set; - sigset_t set; - int i; - - frame_addr = env->regs[R_SP]; - trace_user_do_sigreturn(env, frame_addr); - /* Make sure the guest isn't playing games. */ - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) { - goto badframe; - } - - /* Restore blocked signals */ - __get_user(target_set.sig[0], &frame->sc.oldmask); - for(i = 1; i < TARGET_NSIG_WORDS; i++) { - __get_user(target_set.sig[i], &frame->extramask[i - 1]); - } - target_to_host_sigset_internal(&set, &target_set); - set_sigmask(&set); - - restore_sigcontext(&frame->sc, env); - unlock_user_struct(frame, frame_addr, 0); - return -TARGET_QEMU_ESIGRETURN; -badframe: - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - -long do_rt_sigreturn(CPUCRISState *env) -{ - trace_user_do_rt_sigreturn(env, 0); - fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); - return -TARGET_ENOSYS; -} - #elif defined(TARGET_NIOS2) #define MCONTEXT_VERSION 2