diff options
Diffstat (limited to 'arch/sh/kernel/signal_64.c')
| -rw-r--r-- | arch/sh/kernel/signal_64.c | 38 |
1 files changed, 13 insertions, 25 deletions
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index 0663a0ee602..026fd1cfe17 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -561,13 +561,11 @@ static int setup_frame(int sig, struct k_sigaction *ka, /* Set up to return from userspace. If provided, use a stub already in userspace. */ if (ka->sa.sa_flags & SA_RESTORER) { - DEREF_REG_PR = (unsigned long) ka->sa.sa_restorer | 0x1; - /* * On SH5 all edited pointers are subject to NEFF */ - DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ? - (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR; + DEREF_REG_PR = neff_sign_extend((unsigned long) + ka->sa.sa_restorer | 0x1); } else { /* * Different approach on SH5. @@ -580,9 +578,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, * . being code, linker turns ShMedia bit on, always * dereference index -1. */ - DEREF_REG_PR = (unsigned long) frame->retcode | 0x01; - DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ? - (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR; + DEREF_REG_PR = neff_sign_extend((unsigned long) + frame->retcode | 0x01); if (__copy_to_user(frame->retcode, (void *)((unsigned long)sa_default_restorer & (~1)), 16) != 0) @@ -596,9 +593,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, * Set up registers for signal handler. * All edited pointers are subject to NEFF. */ - regs->regs[REG_SP] = (unsigned long) frame; - regs->regs[REG_SP] = (regs->regs[REG_SP] & NEFF_SIGN) ? - (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP]; + regs->regs[REG_SP] = neff_sign_extend((unsigned long)frame); regs->regs[REG_ARG1] = signal; /* Arg for signal handler */ /* FIXME: @@ -613,8 +608,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->sc; regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->sc; - regs->pc = (unsigned long) ka->sa.sa_handler; - regs->pc = (regs->pc & NEFF_SIGN) ? (regs->pc | NEFF_MASK) : regs->pc; + regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler); set_fs(USER_DS); @@ -676,13 +670,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up to return from userspace. If provided, use a stub already in userspace. */ if (ka->sa.sa_flags & SA_RESTORER) { - DEREF_REG_PR = (unsigned long) ka->sa.sa_restorer | 0x1; - /* * On SH5 all edited pointers are subject to NEFF */ - DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ? - (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR; + DEREF_REG_PR = neff_sign_extend((unsigned long) + ka->sa.sa_restorer | 0x1); } else { /* * Different approach on SH5. @@ -695,15 +687,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * . being code, linker turns ShMedia bit on, always * dereference index -1. */ - - DEREF_REG_PR = (unsigned long) frame->retcode | 0x01; - DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ? - (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR; + DEREF_REG_PR = neff_sign_extend((unsigned long) + frame->retcode | 0x01); if (__copy_to_user(frame->retcode, (void *)((unsigned long)sa_default_rt_restorer & (~1)), 16) != 0) goto give_sigsegv; + /* Cohere the trampoline with the I-cache. */ flush_icache_range(DEREF_REG_PR-1, DEREF_REG_PR-1+15); } @@ -711,14 +702,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * Set up registers for signal handler. * All edited pointers are subject to NEFF. */ - regs->regs[REG_SP] = (unsigned long) frame; - regs->regs[REG_SP] = (regs->regs[REG_SP] & NEFF_SIGN) ? - (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP]; + regs->regs[REG_SP] = neff_sign_extend((unsigned long)frame); regs->regs[REG_ARG1] = signal; /* Arg for signal handler */ regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->info; regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->uc.uc_mcontext; - regs->pc = (unsigned long) ka->sa.sa_handler; - regs->pc = (regs->pc & NEFF_SIGN) ? (regs->pc | NEFF_MASK) : regs->pc; + regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler); set_fs(USER_DS); |