diff options
Diffstat (limited to 'arch/x86/kernel/signal_32.c')
-rw-r--r-- | arch/x86/kernel/signal_32.c | 192 |
1 files changed, 96 insertions, 96 deletions
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c index 0a7c812212c9..40fd3515ccf1 100644 --- a/arch/x86/kernel/signal_32.c +++ b/arch/x86/kernel/signal_32.c @@ -82,14 +82,14 @@ sys_sigaction(int sig, const struct old_sigaction __user *act, } asmlinkage int -sys_sigaltstack(unsigned long ebx) +sys_sigaltstack(unsigned long bx) { /* This is needed to make gcc realize it doesn't own the "struct pt_regs" */ - struct pt_regs *regs = (struct pt_regs *)&ebx; - const stack_t __user *uss = (const stack_t __user *)ebx; - stack_t __user *uoss = (stack_t __user *)regs->ecx; + struct pt_regs *regs = (struct pt_regs *)&bx; + const stack_t __user *uss = (const stack_t __user *)bx; + stack_t __user *uoss = (stack_t __user *)regs->cx; - return do_sigaltstack(uss, uoss, regs->esp); + return do_sigaltstack(uss, uoss, regs->sp); } @@ -105,17 +105,17 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax /* Always make any pending restarted system calls return -EINTR */ current_thread_info()->restart_block.fn = do_no_restart_syscall; -#define COPY(x) err |= __get_user(regs->x, &sc->x) +#define COPY(x) err |= __get_user(regs->x, &sc->e ## x) #define COPY_SEG(seg) \ { unsigned short tmp; \ err |= __get_user(tmp, &sc->seg); \ - regs->x##seg = tmp; } + regs->seg = tmp; } #define COPY_SEG_STRICT(seg) \ { unsigned short tmp; \ err |= __get_user(tmp, &sc->seg); \ - regs->x##seg = tmp|3; } + regs->seg = tmp|3; } #define GET_SEG(seg) \ { unsigned short tmp; \ @@ -131,22 +131,22 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax COPY_SEG(fs); COPY_SEG(es); COPY_SEG(ds); - COPY(edi); - COPY(esi); - COPY(ebp); - COPY(esp); - COPY(ebx); - COPY(edx); - COPY(ecx); - COPY(eip); + COPY(di); + COPY(si); + COPY(bp); + COPY(sp); + COPY(bx); + COPY(dx); + COPY(cx); + COPY(ip); COPY_SEG_STRICT(cs); COPY_SEG_STRICT(ss); { unsigned int tmpflags; err |= __get_user(tmpflags, &sc->eflags); - regs->eflags = (regs->eflags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS); - regs->orig_eax = -1; /* disable syscall checks */ + regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS); + regs->orig_ax = -1; /* disable syscall checks */ } { @@ -175,9 +175,9 @@ badframe: asmlinkage int sys_sigreturn(unsigned long __unused) { struct pt_regs *regs = (struct pt_regs *) &__unused; - struct sigframe __user *frame = (struct sigframe __user *)(regs->esp - 8); + struct sigframe __user *frame = (struct sigframe __user *)(regs->sp - 8); sigset_t set; - int eax; + int ax; if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) goto badframe; @@ -193,17 +193,17 @@ asmlinkage int sys_sigreturn(unsigned long __unused) recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); - if (restore_sigcontext(regs, &frame->sc, &eax)) + if (restore_sigcontext(regs, &frame->sc, &ax)) goto badframe; - return eax; + return ax; badframe: if (show_unhandled_signals && printk_ratelimit()) - printk("%s%s[%d] bad frame in sigreturn frame:%p eip:%lx" - " esp:%lx oeax:%lx\n", + printk("%s%s[%d] bad frame in sigreturn frame:%p ip:%lx" + " sp:%lx oeax:%lx\n", task_pid_nr(current) > 1 ? KERN_INFO : KERN_EMERG, - current->comm, task_pid_nr(current), frame, regs->eip, - regs->esp, regs->orig_eax); + current->comm, task_pid_nr(current), frame, regs->ip, + regs->sp, regs->orig_ax); force_sig(SIGSEGV, current); return 0; @@ -212,9 +212,9 @@ badframe: asmlinkage int sys_rt_sigreturn(unsigned long __unused) { struct pt_regs *regs = (struct pt_regs *) &__unused; - struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(regs->esp - 4); + struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(regs->sp - 4); sigset_t set; - int eax; + int ax; if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) goto badframe; @@ -227,13 +227,13 @@ asmlinkage int sys_rt_sigreturn(unsigned long __unused) recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); - if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &eax)) + if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax)) goto badframe; - if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->esp) == -EFAULT) + if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT) goto badframe; - return eax; + return ax; badframe: force_sig(SIGSEGV, current); @@ -250,27 +250,27 @@ setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate, { int tmp, err = 0; - err |= __put_user(regs->xfs, (unsigned int __user *)&sc->fs); + err |= __put_user(regs->fs, (unsigned int __user *)&sc->fs); savesegment(gs, tmp); err |= __put_user(tmp, (unsigned int __user *)&sc->gs); - err |= __put_user(regs->xes, (unsigned int __user *)&sc->es); - err |= __put_user(regs->xds, (unsigned int __user *)&sc->ds); - err |= __put_user(regs->edi, &sc->edi); - err |= __put_user(regs->esi, &sc->esi); - err |= __put_user(regs->ebp, &sc->ebp); - err |= __put_user(regs->esp, &sc->esp); - err |= __put_user(regs->ebx, &sc->ebx); - err |= __put_user(regs->edx, &sc->edx); - err |= __put_user(regs->ecx, &sc->ecx); - err |= __put_user(regs->eax, &sc->eax); + err |= __put_user(regs->es, (unsigned int __user *)&sc->es); + err |= __put_user(regs->ds, (unsigned int __user *)&sc->ds); + err |= __put_user(regs->di, &sc->edi); + err |= __put_user(regs->si, &sc->esi); + err |= __put_user(regs->bp, &sc->ebp); + err |= __put_user(regs->sp, &sc->esp); + err |= __put_user(regs->bx, &sc->ebx); + err |= __put_user(regs->dx, &sc->edx); + err |= __put_user(regs->cx, &sc->ecx); + err |= __put_user(regs->ax, &sc->eax); err |= __put_user(current->thread.trap_no, &sc->trapno); err |= __put_user(current->thread.error_code, &sc->err); - err |= __put_user(regs->eip, &sc->eip); - err |= __put_user(regs->xcs, (unsigned int __user *)&sc->cs); - err |= __put_user(regs->eflags, &sc->eflags); - err |= __put_user(regs->esp, &sc->esp_at_signal); - err |= __put_user(regs->xss, (unsigned int __user *)&sc->ss); + err |= __put_user(regs->ip, &sc->eip); + err |= __put_user(regs->cs, (unsigned int __user *)&sc->cs); + err |= __put_user(regs->flags, &sc->eflags); + err |= __put_user(regs->sp, &sc->esp_at_signal); + err |= __put_user(regs->ss, (unsigned int __user *)&sc->ss); tmp = save_i387(fpstate); if (tmp < 0) @@ -291,36 +291,36 @@ setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate, static inline void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) { - unsigned long esp; + unsigned long sp; /* Default to using normal stack */ - esp = regs->esp; + sp = regs->sp; /* * If we are on the alternate signal stack and would overflow it, don't. * Return an always-bogus address instead so we will die with SIGSEGV. */ - if (on_sig_stack(esp) && !likely(on_sig_stack(esp - frame_size))) + if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) return (void __user *) -1L; /* This is the X/Open sanctioned signal stack switching. */ if (ka->sa.sa_flags & SA_ONSTACK) { - if (sas_ss_flags(esp) == 0) - esp = current->sas_ss_sp + current->sas_ss_size; + if (sas_ss_flags(sp) == 0) + sp = current->sas_ss_sp + current->sas_ss_size; } /* This is the legacy signal stack switching. */ - else if ((regs->xss & 0xffff) != __USER_DS && + else if ((regs->ss & 0xffff) != __USER_DS && !(ka->sa.sa_flags & SA_RESTORER) && ka->sa.sa_restorer) { - esp = (unsigned long) ka->sa.sa_restorer; + sp = (unsigned long) ka->sa.sa_restorer; } - esp -= frame_size; + sp -= frame_size; /* Align the stack pointer according to the i386 ABI, * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - esp = ((esp + 4) & -16ul) - 4; - return (void __user *) esp; + sp = ((sp + 4) & -16ul) - 4; + return (void __user *) sp; } /* These symbols are defined with the addresses in the vsyscall page. @@ -387,16 +387,16 @@ static int setup_frame(int sig, struct k_sigaction *ka, goto give_sigsegv; /* Set up registers for signal handler */ - regs->esp = (unsigned long) frame; - regs->eip = (unsigned long) ka->sa.sa_handler; - regs->eax = (unsigned long) sig; - regs->edx = (unsigned long) 0; - regs->ecx = (unsigned long) 0; + regs->sp = (unsigned long) frame; + regs->ip = (unsigned long) ka->sa.sa_handler; + regs->ax = (unsigned long) sig; + regs->dx = (unsigned long) 0; + regs->cx = (unsigned long) 0; - regs->xds = __USER_DS; - regs->xes = __USER_DS; - regs->xss = __USER_DS; - regs->xcs = __USER_CS; + regs->ds = __USER_DS; + regs->es = __USER_DS; + regs->ss = __USER_DS; + regs->cs = __USER_CS; /* * Clear TF when entering the signal handler, but @@ -404,13 +404,13 @@ static int setup_frame(int sig, struct k_sigaction *ka, * The tracer may want to single-step inside the * handler too. */ - regs->eflags &= ~TF_MASK; + regs->flags &= ~TF_MASK; if (test_thread_flag(TIF_SINGLESTEP)) ptrace_notify(SIGTRAP); #if DEBUG_SIG printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n", - current->comm, current->pid, frame, regs->eip, frame->pretcode); + current->comm, current->pid, frame, regs->ip, frame->pretcode); #endif return 0; @@ -450,7 +450,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(0, &frame->uc.uc_link); err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->esp), + err |= __put_user(sas_ss_flags(regs->sp), &frame->uc.uc_stack.ss_flags); err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate, @@ -466,7 +466,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(restorer, &frame->pretcode); /* - * This is movl $,%eax ; int $0x80 + * This is movl $,%ax ; int $0x80 * * WE DO NOT USE IT ANY MORE! It's only left here for historical * reasons and because gdb uses it as a signature to notice @@ -480,16 +480,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, goto give_sigsegv; /* Set up registers for signal handler */ - regs->esp = (unsigned long) frame; - regs->eip = (unsigned long) ka->sa.sa_handler; - regs->eax = (unsigned long) usig; - regs->edx = (unsigned long) &frame->info; - regs->ecx = (unsigned long) &frame->uc; + regs->sp = (unsigned long) frame; + regs->ip = (unsigned long) ka->sa.sa_handler; + regs->ax = (unsigned long) usig; + regs->dx = (unsigned long) &frame->info; + regs->cx = (unsigned long) &frame->uc; - regs->xds = __USER_DS; - regs->xes = __USER_DS; - regs->xss = __USER_DS; - regs->xcs = __USER_CS; + regs->ds = __USER_DS; + regs->es = __USER_DS; + regs->ss = __USER_DS; + regs->cs = __USER_CS; /* * Clear TF when entering the signal handler, but @@ -497,13 +497,13 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * The tracer may want to single-step inside the * handler too. */ - regs->eflags &= ~TF_MASK; + regs->flags &= ~TF_MASK; if (test_thread_flag(TIF_SINGLESTEP)) ptrace_notify(SIGTRAP); #if DEBUG_SIG printk("SIG deliver (%s:%d): sp=%p pc=%p ra=%p\n", - current->comm, current->pid, frame, regs->eip, frame->pretcode); + current->comm, current->pid, frame, regs->ip, frame->pretcode); #endif return 0; @@ -524,23 +524,23 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, int ret; /* Are we from a system call? */ - if (regs->orig_eax >= 0) { + if (regs->orig_ax >= 0) { /* If so, check system call restarting.. */ - switch (regs->eax) { + switch (regs->ax) { case -ERESTART_RESTARTBLOCK: case -ERESTARTNOHAND: - regs->eax = -EINTR; + regs->ax = -EINTR; break; case -ERESTARTSYS: if (!(ka->sa.sa_flags & SA_RESTART)) { - regs->eax = -EINTR; + regs->ax = -EINTR; break; } /* fallthrough */ case -ERESTARTNOINTR: - regs->eax = regs->orig_eax; - regs->eip -= 2; + regs->ax = regs->orig_ax; + regs->ip -= 2; } } @@ -548,9 +548,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, * If TF is set due to a debugger (TIF_FORCED_TF), clear the TF * flag so that register information in the sigcontext is correct. */ - if (unlikely(regs->eflags & X86_EFLAGS_TF) && + if (unlikely(regs->flags & X86_EFLAGS_TF) && likely(test_and_clear_thread_flag(TIF_FORCED_TF))) - regs->eflags &= ~X86_EFLAGS_TF; + regs->flags &= ~X86_EFLAGS_TF; /* Set up the stack frame */ if (ka->sa.sa_flags & SA_SIGINFO) @@ -622,19 +622,19 @@ static void fastcall do_signal(struct pt_regs *regs) } /* Did we come from a system call? */ - if (regs->orig_eax >= 0) { + if (regs->orig_ax >= 0) { /* Restart the system call - no handlers present */ - switch (regs->eax) { + switch (regs->ax) { case -ERESTARTNOHAND: case -ERESTARTSYS: case -ERESTARTNOINTR: - regs->eax = regs->orig_eax; - regs->eip -= 2; + regs->ax = regs->orig_ax; + regs->ip -= 2; break; case -ERESTART_RESTARTBLOCK: - regs->eax = __NR_restart_syscall; - regs->eip -= 2; + regs->ax = __NR_restart_syscall; + regs->ip -= 2; break; } } @@ -657,7 +657,7 @@ void do_notify_resume(struct pt_regs *regs, void *_unused, { /* Pending single-step? */ if (thread_info_flags & _TIF_SINGLESTEP) { - regs->eflags |= TF_MASK; + regs->flags |= TF_MASK; clear_thread_flag(TIF_SINGLESTEP); } |