#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/personality.h>
-#include <linux/compiler.h>
#include <linux/uaccess.h>
#include <asm/processor.h>
#include <asm/ucontext.h>
#include <asm/i387.h>
+#include <asm/vdso.h>
+
+#ifdef CONFIG_X86_64
#include <asm/proto.h>
#include <asm/ia32_unistd.h>
#include <asm/mce.h>
+#endif /* CONFIG_X86_64 */
+
#include <asm/syscall.h>
#include <asm/syscalls.h>
+
#include "sigframe.h"
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
err |= __get_user(regs->x, &sc->x); \
}
-#define COPY_SEG_STRICT(seg) { \
+#define COPY_SEG_CPL3(seg) { \
unsigned short tmp; \
err |= __get_user(tmp, &sc->seg); \
regs->seg = tmp | 3; \
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
+#ifdef CONFIG_X86_32
+ GET_SEG(gs);
+ COPY_SEG(fs);
+ COPY_SEG(es);
+ COPY_SEG(ds);
+#endif /* CONFIG_X86_32 */
+
COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
COPY(dx); COPY(cx); COPY(ip);
+
+#ifdef CONFIG_X86_64
COPY(r8);
COPY(r9);
COPY(r10);
COPY(r13);
COPY(r14);
COPY(r15);
+#endif /* CONFIG_X86_64 */
+#ifdef CONFIG_X86_32
+ COPY_SEG_CPL3(cs);
+ COPY_SEG_CPL3(ss);
+#else /* !CONFIG_X86_32 */
/* Kernel saves and restores only the CS segment register on signals,
* which is the bare minimum needed to allow mixed 32/64-bit code.
* App's signal handler can save/restore other segments if needed. */
- COPY_SEG_STRICT(cs);
+ COPY_SEG_CPL3(cs);
+#endif /* CONFIG_X86_32 */
err |= __get_user(tmpflags, &sc->flags);
regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
/*
* Set up a signal frame.
*/
-
-static inline int
-setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
- unsigned long mask, struct task_struct *me)
+static int
+setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
+ struct pt_regs *regs, unsigned long mask)
{
int err = 0;
- err |= __put_user(regs->cs, &sc->cs);
- err |= __put_user(0, &sc->gs);
- err |= __put_user(0, &sc->fs);
+#ifdef CONFIG_X86_32
+ {
+ unsigned int tmp;
+
+ savesegment(gs, tmp);
+ err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
+ }
+ err |= __put_user(regs->fs, (unsigned int __user *)&sc->fs);
+ err |= __put_user(regs->es, (unsigned int __user *)&sc->es);
+ err |= __put_user(regs->ds, (unsigned int __user *)&sc->ds);
+#endif /* CONFIG_X86_32 */
err |= __put_user(regs->di, &sc->di);
err |= __put_user(regs->si, &sc->si);
err |= __put_user(regs->dx, &sc->dx);
err |= __put_user(regs->cx, &sc->cx);
err |= __put_user(regs->ax, &sc->ax);
+#ifdef CONFIG_X86_64
err |= __put_user(regs->r8, &sc->r8);
err |= __put_user(regs->r9, &sc->r9);
err |= __put_user(regs->r10, &sc->r10);
err |= __put_user(regs->r13, &sc->r13);
err |= __put_user(regs->r14, &sc->r14);
err |= __put_user(regs->r15, &sc->r15);
- err |= __put_user(me->thread.trap_no, &sc->trapno);
- err |= __put_user(me->thread.error_code, &sc->err);
+#endif /* CONFIG_X86_64 */
+
+ err |= __put_user(current->thread.trap_no, &sc->trapno);
+ err |= __put_user(current->thread.error_code, &sc->err);
err |= __put_user(regs->ip, &sc->ip);
+#ifdef CONFIG_X86_32
+ err |= __put_user(regs->cs, (unsigned int __user *)&sc->cs);
err |= __put_user(regs->flags, &sc->flags);
+ err |= __put_user(regs->sp, &sc->sp_at_signal);
+ err |= __put_user(regs->ss, (unsigned int __user *)&sc->ss);
+#else /* !CONFIG_X86_32 */
+ err |= __put_user(regs->flags, &sc->flags);
+ err |= __put_user(regs->cs, &sc->cs);
+ err |= __put_user(0, &sc->gs);
+ err |= __put_user(0, &sc->fs);
+#endif /* CONFIG_X86_32 */
+
+ err |= __put_user(fpstate, &sc->fpstate);
+
+ /* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
- err |= __put_user(me->thread.cr2, &sc->cr2);
+ err |= __put_user(current->thread.cr2, &sc->cr2);
return err;
}
*/
static void __user *
-get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
+get_stack(struct k_sigaction *ka, unsigned long sp, unsigned long size)
{
- unsigned long sp;
-
/* Default to using normal stack - redzone*/
- sp = regs->sp - 128;
+ sp -= 128;
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
struct task_struct *me = current;
if (used_math()) {
- fp = get_stack(ka, regs, sig_xstate_size);
+ fp = get_stack(ka, regs->sp, sig_xstate_size);
frame = (void __user *)round_down(
(unsigned long)fp - sizeof(struct rt_sigframe), 16) - 8;
if (save_i387_xstate(fp) < 0)
return -EFAULT;
} else
- frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
+ frame = get_stack(ka, regs->sp, sizeof(struct rt_sigframe)) - 8;
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
return -EFAULT;
err |= __put_user(sas_ss_flags(regs->sp),
&frame->uc.uc_stack.ss_flags);
err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0], me);
- err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
- if (sizeof(*set) == 16) {
- __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
- __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
- } else
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+ err |= setup_sigcontext(&frame->uc.uc_mcontext, fp, regs, set->sig[0]);
+ err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
*/
static int signr_convert(int sig)
{
+#ifdef CONFIG_X86_32
+ struct thread_info *info = current_thread_info();
+
+ if (info->exec_domain && info->exec_domain->signal_invmap && sig < 32)
+ return info->exec_domain->signal_invmap[sig];
+#endif /* CONFIG_X86_32 */
return sig;
}
+#ifdef CONFIG_X86_32
+
+#define is_ia32 1
+#define ia32_setup_frame __setup_frame
+#define ia32_setup_rt_frame __setup_rt_frame
+
+#else /* !CONFIG_X86_32 */
+
#ifdef CONFIG_IA32_EMULATION
#define is_ia32 test_thread_flag(TIF_IA32)
-#else
+#else /* !CONFIG_IA32_EMULATION */
#define is_ia32 0
-#endif
+#endif /* CONFIG_IA32_EMULATION */
+
+#endif /* CONFIG_X86_32 */
static int
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
return 0;
}
+#ifdef CONFIG_X86_32
+#define NR_restart_syscall __NR_restart_syscall
+#else /* !CONFIG_X86_32 */
#define NR_restart_syscall \
test_thread_flag(TIF_IA32) ? __NR_ia32_restart_syscall : __NR_restart_syscall
+#endif /* CONFIG_X86_32 */
+
/*
* Note that 'init' is a special process: it doesn't get signals it doesn't
* want to handle. Thus you cannot kill init even with a SIGKILL even by
projects / linux-2.6-omap-h63xx.git / blobdiff