mirror of https://gitee.com/openkylin/qemu.git
CRIS signals:
* Save $mof across signals. * Cleaned up frame accesses. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4012 c046a42c-6fe2-441c-8c8c-71466251a162
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ccd4a21937
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9664d92872
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@ -2731,67 +2731,68 @@ struct rt_signal_frame {
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static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env)
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{
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sc->regs.r0 = env->regs[0];
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sc->regs.r1 = env->regs[1];
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sc->regs.r2 = env->regs[2];
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sc->regs.r3 = env->regs[3];
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sc->regs.r4 = env->regs[4];
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sc->regs.r5 = env->regs[5];
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sc->regs.r6 = env->regs[6];
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sc->regs.r7 = env->regs[7];
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sc->regs.r8 = env->regs[8];
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sc->regs.r9 = env->regs[9];
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sc->regs.r10 = env->regs[10];
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sc->regs.r11 = env->regs[11];
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sc->regs.r12 = env->regs[12];
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sc->regs.r13 = env->regs[13];
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sc->usp = env->regs[14];
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sc->regs.acr = env->regs[15];
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sc->regs.srp = env->pregs[PR_SRP];
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sc->regs.erp = env->pc;
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env->pregs[PR_ERP] = env->pc;
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__put_user(env->regs[0], &sc->regs.r0);
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__put_user(env->regs[1], &sc->regs.r1);
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__put_user(env->regs[2], &sc->regs.r2);
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__put_user(env->regs[3], &sc->regs.r3);
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__put_user(env->regs[4], &sc->regs.r4);
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__put_user(env->regs[5], &sc->regs.r5);
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__put_user(env->regs[6], &sc->regs.r6);
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__put_user(env->regs[7], &sc->regs.r7);
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__put_user(env->regs[8], &sc->regs.r8);
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__put_user(env->regs[9], &sc->regs.r9);
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__put_user(env->regs[10], &sc->regs.r10);
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__put_user(env->regs[11], &sc->regs.r11);
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__put_user(env->regs[12], &sc->regs.r12);
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__put_user(env->regs[13], &sc->regs.r13);
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__put_user(env->regs[14], &sc->usp);
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__put_user(env->regs[15], &sc->regs.acr);
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__put_user(env->pregs[PR_MOF], &sc->regs.mof);
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__put_user(env->pregs[PR_SRP], &sc->regs.srp);
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__put_user(env->pc, &sc->regs.erp);
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}
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static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env)
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{
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env->regs[0] = sc->regs.r0;
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env->regs[1] = sc->regs.r1;
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env->regs[2] = sc->regs.r2;
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env->regs[3] = sc->regs.r3;
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env->regs[4] = sc->regs.r4;
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env->regs[5] = sc->regs.r5;
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env->regs[6] = sc->regs.r6;
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env->regs[7] = sc->regs.r7;
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env->regs[8] = sc->regs.r8;
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env->regs[9] = sc->regs.r9;
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env->regs[10] = sc->regs.r10;
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env->regs[11] = sc->regs.r11;
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env->regs[12] = sc->regs.r12;
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env->regs[13] = sc->regs.r13;
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env->regs[14] = sc->usp;
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env->regs[15] = sc->regs.acr;
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__get_user(env->regs[0], &sc->regs.r0);
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__get_user(env->regs[1], &sc->regs.r1);
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__get_user(env->regs[2], &sc->regs.r2);
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__get_user(env->regs[3], &sc->regs.r3);
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__get_user(env->regs[4], &sc->regs.r4);
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__get_user(env->regs[5], &sc->regs.r5);
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__get_user(env->regs[6], &sc->regs.r6);
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__get_user(env->regs[7], &sc->regs.r7);
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__get_user(env->regs[8], &sc->regs.r8);
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__get_user(env->regs[9], &sc->regs.r9);
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__get_user(env->regs[10], &sc->regs.r10);
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__get_user(env->regs[11], &sc->regs.r11);
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__get_user(env->regs[12], &sc->regs.r12);
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__get_user(env->regs[13], &sc->regs.r13);
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__get_user(env->regs[14], &sc->usp);
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__get_user(env->regs[15], &sc->regs.acr);
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__get_user(env->pregs[PR_MOF], &sc->regs.mof);
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__get_user(env->pregs[PR_SRP], &sc->regs.srp);
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__get_user(env->pc, &sc->regs.erp);
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}
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static struct target_signal_frame *get_sigframe(CPUState *env, int framesize)
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static abi_ulong get_sigframe(CPUState *env, int framesize)
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{
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uint8_t *sp;
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abi_ulong sp;
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/* Align the stack downwards to 4. */
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sp = (uint8_t *) (env->regs[R_SP] & ~3);
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return (void *)(sp - framesize);
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sp = (env->regs[R_SP] & ~3);
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return sp - framesize;
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}
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static void setup_frame(int sig, struct emulated_sigaction *ka,
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target_sigset_t *set, CPUState *env)
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{
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struct target_signal_frame *frame;
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abi_ulong frame_addr;
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int err = 0;
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int i;
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uint32_t old_usp;
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old_usp = env->regs[R_SP];
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frame = get_sigframe(env, sizeof *frame);
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if (!lock_user_struct(VERIFY_WRITE, frame, (abi_ulong)frame, 1))
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frame_addr = get_sigframe(env, sizeof *frame);
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if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
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goto badframe;
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/*
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@ -2825,10 +2826,10 @@ static void setup_frame(int sig, struct emulated_sigaction *ka,
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/* Link SRP so the guest returns through the trampoline. */
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env->pregs[PR_SRP] = (uint32_t) &frame->retcode[0];
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unlock_user_struct(frame, (abi_ulong)frame, 0);
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unlock_user_struct(frame, frame_addr, 1);
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return;
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badframe:
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unlock_user_struct(frame, (abi_ulong)frame, 0);
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unlock_user_struct(frame, frame_addr, 1);
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force_sig(TARGET_SIGSEGV);
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}
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@ -2842,13 +2843,14 @@ static void setup_rt_frame(int sig, struct emulated_sigaction *ka,
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long do_sigreturn(CPUState *env)
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{
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struct target_signal_frame *frame;
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abi_ulong frame_addr;
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target_sigset_t target_set;
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sigset_t set;
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int i;
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frame = (void *) env->regs[R_SP];
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frame_addr = env->regs[R_SP];
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/* Make sure the guest isn't playing games. */
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if (!lock_user_struct(VERIFY_READ, frame, (abi_ulong)frame, 1))
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if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
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goto badframe;
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/* Restore blocked signals */
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@ -2862,14 +2864,13 @@ long do_sigreturn(CPUState *env)
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sigprocmask(SIG_SETMASK, &set, NULL);
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restore_sigcontext(&frame->sc, env);
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/* Compensate -2 for the syscall return path advancing brk. */
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env->pc = frame->sc.regs.erp - 2;
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env->pregs[PR_SRP] = frame->sc.regs.srp;
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/* Compensate for the syscall return path advancing brk. */
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env->pc -= 2;
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unlock_user_struct(frame, (abi_ulong)frame, 0);
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unlock_user_struct(frame, frame_addr, 0);
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return env->regs[10];
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badframe:
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unlock_user_struct(frame, (abi_ulong)frame, 0);
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unlock_user_struct(frame, frame_addr, 0);
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force_sig(TARGET_SIGSEGV);
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}
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