#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/cacheflush.h>
+#include <asm/asm-offsets.h>
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
#endif
asmlinkage int
-sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize, struct pt_regs *regs)
+sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *regs)
{
sigset_t saveset, newset;
#ifdef __LP64__
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
- if (copy_from_user(&newset32, (compat_sigset_t *)unewset, sizeof(newset32)))
+ if (copy_from_user(&newset32, (compat_sigset_t __user *)unewset, sizeof(newset32)))
return -EFAULT;
sigset_32to64(&newset,&newset32);
#define INSN_DIE_HORRIBLY 0x68000ccc /* stw %r0,0x666(%sr0,%r0) */
static long
-restore_sigcontext(struct sigcontext *sc, struct pt_regs *regs)
+restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
{
long err = 0;
void
sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
{
- struct rt_sigframe *frame;
+ struct rt_sigframe __user *frame;
struct siginfo si;
sigset_t set;
unsigned long usp = (regs->gr[30] & ~(0x01UL));
unsigned long sigframe_size = PARISC_RT_SIGFRAME_SIZE;
#ifdef __LP64__
compat_sigset_t compat_set;
- struct compat_rt_sigframe * compat_frame;
+ struct compat_rt_sigframe __user * compat_frame;
if(personality(current->personality) == PER_LINUX32)
sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
/* Unwind the user stack to get the rt_sigframe structure. */
- frame = (struct rt_sigframe *)
+ frame = (struct rt_sigframe __user *)
(usp - sigframe_size);
DBG(2,"sys_rt_sigreturn: frame is %p\n", frame);
#ifdef __LP64__
- compat_frame = (struct compat_rt_sigframe *)frame;
+ compat_frame = (struct compat_rt_sigframe __user *)frame;
if(personality(current->personality) == PER_LINUX32){
DBG(2,"sys_rt_sigreturn: ELF32 process.\n");
* Set up a signal frame.
*/
-static inline void *
+static inline void __user *
get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
{
/*FIXME: ELF32 vs. ELF64 has different frame_size, but since we
sp = current->sas_ss_sp; /* Stacks grow up! */
DBG(1,"get_sigframe: Returning sp = %#lx\n", (unsigned long)sp);
- return (void *) sp; /* Stacks grow up. Fun. */
+ return (void __user *) sp; /* Stacks grow up. Fun. */
}
static long
-setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, int in_syscall)
+setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, int in_syscall)
{
unsigned long flags = 0;
setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs, int in_syscall)
{
- struct rt_sigframe *frame;
+ struct rt_sigframe __user *frame;
unsigned long rp, usp;
unsigned long haddr, sigframe_size;
- struct siginfo si;
int err = 0;
#ifdef __LP64__
compat_int_t compat_val;
- struct compat_rt_sigframe * compat_frame;
+ struct compat_rt_sigframe __user * compat_frame;
compat_sigset_t compat_set;
#endif
#ifdef __LP64__
- compat_frame = (struct compat_rt_sigframe *)frame;
+ compat_frame = (struct compat_rt_sigframe __user *)frame;
if(personality(current->personality) == PER_LINUX32) {
DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &compat_frame->info);
- err |= compat_copy_siginfo_to_user(&compat_frame->info, info);
+ err |= copy_siginfo_to_user32(&compat_frame->info, info);
DBG(1,"SETUP_RT_FRAME: 1\n");
compat_val = (compat_int_t)current->sas_ss_sp;
err |= __put_user(compat_val, &compat_frame->uc.uc_stack.ss_sp);
#endif
if (haddr & PA_PLABEL_FDESC) {
Elf32_Fdesc fdesc;
- Elf32_Fdesc *ufdesc = (Elf32_Fdesc *)A(haddr & ~3);
+ Elf32_Fdesc __user *ufdesc = (Elf32_Fdesc __user *)A(haddr & ~3);
err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc));
#ifdef __LP64__
} else {
Elf64_Fdesc fdesc;
- Elf64_Fdesc *ufdesc = (Elf64_Fdesc *)A(haddr & ~3);
+ Elf64_Fdesc __user *ufdesc = (Elf64_Fdesc __user *)A(haddr & ~3);
err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc));
psw |= PSW_W;
#endif
+ /* If we are singlestepping, arrange a trap to be delivered
+ when we return to userspace. Note the semantics -- we
+ should trap before the first insn in the handler is
+ executed. Ref:
+ http://sources.redhat.com/ml/gdb/2004-11/msg00245.html
+ */
+ if (pa_psw(current)->r) {
+ pa_psw(current)->r = 0;
+ psw |= PSW_R;
+ mtctl(-1, 0);
+ }
+
regs->gr[0] = psw;
regs->iaoq[0] = haddr | 3;
regs->iaoq[1] = regs->iaoq[0] + 4;
give_sigsegv:
DBG(1,"setup_rt_frame: sending SIGSEGV\n");
- if (sig == SIGSEGV)
- ka->sa.sa_handler = SIG_DFL;
- si.si_signo = SIGSEGV;
- si.si_errno = 0;
- si.si_code = SI_KERNEL;
- si.si_pid = current->pid;
- si.si_uid = current->uid;
- si.si_addr = frame;
- force_sig_info(SIGSEGV, &si, current);
+ force_sigsegv(sig, current);
return 0;
}
if (!setup_rt_frame(sig, ka, info, oldset, regs, in_syscall))
return 0;
- if (!(ka->sa.sa_flags & SA_NODEFER)) {
- spin_lock_irq(¤t->sighand->siglock);
- sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(¤t->blocked,sig);
- recalc_sigpending();
- spin_unlock_irq(¤t->sighand->siglock);
- }
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
return 1;
}
put_user(0xe0008200, &usp[3]);
put_user(0x34140000, &usp[4]);
- /* Stack is 64-byte aligned, and we only
- * need to flush 1 cache line */
- asm("fdc 0(%%sr3, %0)\n"
- "fic 0(%%sr3, %0)\n"
+ /* Stack is 64-byte aligned, and we only need
+ * to flush 1 cache line.
+ * Flushing one cacheline is cheap.
+ * "sync" on bigger (> 4 way) boxes is not.
+ */
+ asm("fdc %%r0(%%sr3, %0)\n"
+ "sync\n"
+ "fic %%r0(%%sr3, %0)\n"
"sync\n"
: : "r"(regs->gr[30]));
git://git.onelab.eu / linux-2.6.git / blobdiff