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Commit eef61347 authored by Anton Blanchard's avatar Anton Blanchard
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ppc64: 64 and 32 bit signal cleanups from Stephen Rothwell

parent ecfb7062
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Showing with 143 additions and 180 deletions
arch/ppc64/kernel/signal.c
View file @ eef61347
......@@ -26,8 +26,6 @@
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/elf.h>
#include <linux/tty.h>
#include <linux/binfmts.h>
#include <asm/ppc32.h>
#include <asm/sigcontext.h>
#include <asm/ucontext.h>
......@@ -59,9 +57,36 @@
*/
#define MSR_USERCHANGE (MSR_FE0 | MSR_FE1)
int do_signal(sigset_t *oldset, struct pt_regs *regs);
extern long sys_wait4(pid_t pid, unsigned int *stat_addr,
int options, /*unsigned long*/ struct rusage *ru);
/*
* When we have signals to deliver, we set up on the
* user stack, going down from the original stack pointer:
* a sigregs struct
* one or more sigcontext structs with
* a gap of __SIGNAL_FRAMESIZE bytes
*
* Each of these things must be a multiple of 16 bytes in size.
*
*/
struct sigregs {
elf_gregset_t gp_regs;
double fp_regs[ELF_NFPREG];
unsigned int tramp[2];
/* 64 bit API allows for 288 bytes below sp before
decrementing it. */
int abigap[72];
};
struct rt_sigframe
{
unsigned long _unused[2];
struct siginfo *pinfo;
void *puc;
struct siginfo info;
struct ucontext uc;
};
extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
/*
* Atomically swap in the new signal mask, and wait for a signal.
......@@ -127,7 +152,7 @@ long sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize, int p3, int p4, int
long sys_sigaltstack(const stack_t *uss, stack_t *uoss)
{
struct pt_regs *regs = (struct pt_regs *) &uss;
struct pt_regs *regs = (struct pt_regs *)&uss;
return do_sigaltstack(uss, uoss, regs->gpr[1]);
}
......@@ -139,6 +164,7 @@ long sys_sigaction(int sig, const struct old_sigaction *act,
if (act) {
old_sigset_t mask;
if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
__get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
......@@ -148,8 +174,7 @@ long sys_sigaction(int sig, const struct old_sigaction *act,
siginitset(&new_ka.sa.sa_mask, mask);
}
ret = do_sigaction(sig, (act? &new_ka: NULL), (oact? &old_ka: NULL));
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
__put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
......@@ -162,35 +187,6 @@ long sys_sigaction(int sig, const struct old_sigaction *act,
return ret;
}
/*
* When we have signals to deliver, we set up on the
* user stack, going down from the original stack pointer:
* a sigregs struct
* one or more sigcontext structs with
* a gap of __SIGNAL_FRAMESIZE bytes
*
* Each of these things must be a multiple of 16 bytes in size.
*
*/
struct sigregs {
elf_gregset_t gp_regs;
double fp_regs[ELF_NFPREG];
unsigned int tramp[2];
/* 64 bit API allows for 288 bytes below sp before
decrementing it. */
int abigap[72];
};
struct rt_sigframe
{
unsigned long _unused[2];
struct siginfo *pinfo;
void *puc;
struct siginfo info;
struct ucontext uc;
};
/*
* When we have rt signals to deliver, we set up on the
* user stack, going down from the original stack pointer:
......@@ -231,7 +227,7 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
* preamble frame (where registers are stored)
* see handle_signal()
*/
sr = (struct sigregs *) sigctx.regs;
sr = (struct sigregs *)sigctx.regs;
if (copy_from_user(saved_regs, &sr->gp_regs, sizeof(sr->gp_regs)))
goto badframe;
saved_regs[PT_MSR] = (regs->msr & ~MSR_USERCHANGE)
......@@ -251,11 +247,10 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
do_exit(SIGSEGV);
}
static void
setup_rt_frame(struct pt_regs *regs, struct sigregs *frame,
static void setup_rt_frame(struct pt_regs *regs, struct sigregs *frame,
signed long newsp)
{
struct rt_sigframe *rt_sf = (struct rt_sigframe *) newsp;
struct rt_sigframe *rt_sf = (struct rt_sigframe *)newsp;
/* Handler is *really* a pointer to the function descriptor for
* the signal routine. The first entry in the function
* descriptor is the entry address of signal and the second
......@@ -277,11 +272,13 @@ setup_rt_frame(struct pt_regs *regs, struct sigregs *frame,
if (__copy_to_user(&frame->gp_regs, regs, GP_REGS_SIZE)
|| __copy_to_user(&frame->fp_regs, current->thread.fpr,
ELF_NFPREG * sizeof(double))
|| __put_user(0x38000000UL + __NR_rt_sigreturn, &frame->tramp[0]) /* li r0, __NR_rt_sigreturn */
|| __put_user(0x44000002UL, &frame->tramp[1])) /* sc */
/* li r0, __NR_rt_sigreturn */
|| __put_user(0x38000000UL + __NR_rt_sigreturn, &frame->tramp[0])
/* sc */
|| __put_user(0x44000002UL, &frame->tramp[1]))
goto badframe;
flush_icache_range((unsigned long) &frame->tramp[0],
(unsigned long) &frame->tramp[2]);
flush_icache_range((unsigned long)&frame->tramp[0],
(unsigned long)&frame->tramp[2]);
current->thread.fpscr = 0; /* turn off all fp exceptions */
/* Retrieve rt_sigframe from stack and
......@@ -289,11 +286,11 @@ setup_rt_frame(struct pt_regs *regs, struct sigregs *frame,
*/
newsp -= __SIGNAL_FRAMESIZE;
if ( get_user(temp_ptr, &rt_sf->uc.uc_mcontext.handler)) {
if (get_user(temp_ptr, &rt_sf->uc.uc_mcontext.handler)) {
goto badframe;
}
funct_desc_ptr = ( struct funct_descr_entry *) temp_ptr;
funct_desc_ptr = (struct funct_descr_entry *)temp_ptr;
if (put_user(regs->gpr[1], (unsigned long *)newsp)
|| get_user(regs->nip, &funct_desc_ptr->entry)
......@@ -304,8 +301,8 @@ setup_rt_frame(struct pt_regs *regs, struct sigregs *frame,
goto badframe;
regs->gpr[1] = newsp;
regs->gpr[6] = (unsigned long) rt_sf;
regs->link = (unsigned long) frame->tramp;
regs->gpr[6] = (unsigned long)rt_sf;
regs->link = (unsigned long)frame->tramp;
return;
......@@ -342,11 +339,11 @@ long sys_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sigmask_lock);
if (regs->msr & MSR_FP )
if (regs->msr & MSR_FP)
giveup_fpu(current);
/* restore registers */
sr = (struct sigregs *) sigctx.regs;
sr = (struct sigregs *)sigctx.regs;
if (copy_from_user(saved_regs, &sr->gp_regs, sizeof(sr->gp_regs)))
goto badframe;
saved_regs[PT_MSR] = (regs->msr & ~MSR_USERCHANGE)
......@@ -367,8 +364,7 @@ long sys_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
/*
* Set up a signal frame.
*/
static void
setup_frame(struct pt_regs *regs, struct sigregs *frame,
static void setup_frame(struct pt_regs *regs, struct sigregs *frame,
unsigned long newsp)
{
......@@ -385,7 +381,7 @@ setup_frame(struct pt_regs *regs, struct sigregs *frame,
struct funct_descr_entry * funct_desc_ptr;
unsigned long temp_ptr;
struct sigcontext_struct *sc = (struct sigcontext_struct *) newsp;
struct sigcontext_struct *sc = (struct sigcontext_struct *)newsp;
if (verify_area(VERIFY_WRITE, frame, sizeof(*frame)))
goto badframe;
......@@ -394,27 +390,29 @@ setup_frame(struct pt_regs *regs, struct sigregs *frame,
if (__copy_to_user(&frame->gp_regs, regs, GP_REGS_SIZE)
|| __copy_to_user(&frame->fp_regs, current->thread.fpr,
ELF_NFPREG * sizeof(double))
|| __put_user(0x38000000UL + __NR_sigreturn, &frame->tramp[0]) /* li r0, __NR_sigreturn */
|| __put_user(0x44000002UL, &frame->tramp[1])) /* sc */
/* li r0, __NR_sigreturn */
|| __put_user(0x38000000UL + __NR_sigreturn, &frame->tramp[0])
/* sc */
|| __put_user(0x44000002UL, &frame->tramp[1]))
goto badframe;
flush_icache_range((unsigned long) &frame->tramp[0],
(unsigned long) &frame->tramp[2]);
flush_icache_range((unsigned long)&frame->tramp[0],
(unsigned long)&frame->tramp[2]);
current->thread.fpscr = 0; /* turn off all fp exceptions */
newsp -= __SIGNAL_FRAMESIZE;
if ( get_user(temp_ptr, &sc->handler))
if (get_user(temp_ptr, &sc->handler))
goto badframe;
funct_desc_ptr = ( struct funct_descr_entry *) temp_ptr;
funct_desc_ptr = (struct funct_descr_entry *)temp_ptr;
if (put_user(regs->gpr[1], (unsigned long *)newsp)
|| get_user(regs->nip, & funct_desc_ptr ->entry)
|| get_user(regs->gpr[2],& funct_desc_ptr->toc)
|| get_user(regs->nip, &funct_desc_ptr ->entry)
|| get_user(regs->gpr[2],&funct_desc_ptr->toc)
|| get_user(regs->gpr[3], &sc->signal))
goto badframe;
regs->gpr[1] = newsp;
regs->gpr[4] = (unsigned long) sc;
regs->link = (unsigned long) frame->tramp;
regs->gpr[4] = (unsigned long)sc;
regs->link = (unsigned long)frame->tramp;
return;
......@@ -429,8 +427,7 @@ setup_frame(struct pt_regs *regs, struct sigregs *frame,
/*
* OK, we're invoking a handler
*/
static void
handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
static void handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
struct pt_regs * regs, unsigned long *newspp, unsigned long frame)
{
struct sigcontext_struct *sc;
......@@ -447,11 +444,12 @@ handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
if (ka->sa.sa_flags & SA_SIGINFO) {
/* Put a Real Time Context onto stack */
*newspp -= sizeof(*rt_sf);
rt_sf = (struct rt_sigframe *) *newspp;
rt_sf = (struct rt_sigframe *)*newspp;
if (verify_area(VERIFY_WRITE, rt_sf, sizeof(*rt_sf)))
goto badframe;
if (__put_user((unsigned long) ka->sa.sa_handler, &rt_sf->uc.uc_mcontext.handler)
if (__put_user((unsigned long)ka->sa.sa_handler,
&rt_sf->uc.uc_mcontext.handler)
|| __put_user(&rt_sf->info, &rt_sf->pinfo)
|| __put_user(&rt_sf->uc, &rt_sf->puc)
/* Put the siginfo */
......@@ -461,9 +459,11 @@ handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
|| __put_user(0, &rt_sf->uc.uc_link)
|| __put_user(current->sas_ss_sp, &rt_sf->uc.uc_stack.ss_sp)
|| __put_user(sas_ss_flags(regs->gpr[1]),
&rt_sf->uc.uc_stack.ss_flags)
|| __put_user(current->sas_ss_size, &rt_sf->uc.uc_stack.ss_size)
|| __copy_to_user(&rt_sf->uc.uc_sigmask, oldset, sizeof(*oldset))
&rt_sf->uc.uc_stack.ss_flags)
|| __put_user(current->sas_ss_size,
&rt_sf->uc.uc_stack.ss_size)
|| __copy_to_user(&rt_sf->uc.uc_sigmask,
oldset, sizeof(*oldset))
/* mcontext.regs points to preamble register frame */
|| __put_user((struct pt_regs *)frame, &rt_sf->uc.uc_mcontext.regs)
|| __put_user(sig, &rt_sf->uc.uc_mcontext.signal))
......@@ -471,11 +471,11 @@ handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
} else {
/* Put a sigcontext on the stack */
*newspp -= sizeof(*sc);
sc = (struct sigcontext_struct *) *newspp;
sc = (struct sigcontext_struct *)*newspp;
if (verify_area(VERIFY_WRITE, sc, sizeof(*sc)))
goto badframe;
if (__put_user((unsigned long) ka->sa.sa_handler, &sc->handler)
if (__put_user((unsigned long)ka->sa.sa_handler, &sc->handler)
|| __put_user(oldset->sig[0], &sc->oldmask)
#if _NSIG_WORDS > 1
|| __put_user(oldset->sig[1], &sc->_unused[3])
......@@ -512,6 +512,7 @@ handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
* mistake.
*/
extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
int do_signal(sigset_t *oldset, struct pt_regs *regs)
{
siginfo_t info;
......@@ -526,7 +527,7 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
if (test_thread_flag(TIF_32BIT))
return do_signal32(oldset, regs);
if (!oldset)
if (!oldset)
oldset = &current->blocked;
newsp = frame = 0;
......@@ -534,8 +535,8 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
signr = get_signal_to_deliver(&info, regs);
if (signr > 0) {
ka = &current->sig->action[signr-1];
if ( (ka->sa.sa_flags & SA_ONSTACK)
&& (! on_sig_stack(regs->gpr[1])))
if ((ka->sa.sa_flags & SA_ONSTACK)
&& (!on_sig_stack(regs->gpr[1])))
newsp = (current->sas_ss_sp + current->sas_ss_size);
else
newsp = regs->gpr[1];
......@@ -557,9 +558,10 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
if (newsp == frame)
return 0; /* no signals delivered */
/* Invoke correct stack setup routine */
if (ka->sa.sa_flags & SA_SIGINFO)
setup_rt_frame(regs, (struct sigregs *) frame, newsp);
setup_rt_frame(regs, (struct sigregs *)frame, newsp);
else
setup_frame(regs, (struct sigregs *) frame, newsp);
setup_frame(regs, (struct sigregs *)frame, newsp);
return 1;
}
arch/ppc64/kernel/signal32.c
View file @ eef61347
......@@ -14,43 +14,19 @@
* 2 of the License, or (at your option) any later version.
*/
#include <asm/ptrace.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/signal.h>
#include <linux/utime.h>
#include <linux/resource.h>
#include <linux/times.h>
#include <linux/utsname.h>
#include <linux/timex.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/slab.h>
#include <linux/uio.h>
#include <linux/nfs_fs.h>
#include <linux/smb_fs.h>
#include <linux/smb_mount.h>
#include <linux/ncp_fs.h>
#include <linux/module.h>
#include <linux/poll.h>
#include <linux/personality.h>
#include <linux/stat.h>
#include <linux/filter.h>
#include <linux/tty.h>
#include <linux/binfmts.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/elf.h>
#include <asm/types.h>
#include <asm/ipc.h>
#include <asm/uaccess.h>
#include <asm/ppc32.h>
#include <asm/uaccess.h>
#include <asm/ppcdebug.h>
#include <asm/unistd.h>
#include <asm/cacheflush.h>
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/*
......@@ -112,9 +88,6 @@ struct rt_sigframe_32 {
};
extern asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr,
int options, struct rusage * ru);
/*
* Start of nonRT signal support
......@@ -133,7 +106,7 @@ extern asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr,
* setup_frame32
*/
asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 *act,
long sys32_sigaction(int sig, struct old_sigaction32 *act,
struct old_sigaction32 *oact)
{
struct k_sigaction new_ka, old_ka;
......@@ -145,32 +118,30 @@ asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 *act,
if (act) {
old_sigset_t32 mask;
ret = get_user((long)new_ka.sa.sa_handler, &act->sa_handler);
ret |= __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer);
ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
ret |= __get_user(mask, &act->sa_mask);
if (ret)
return ret;
if (get_user((long)new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
__get_user(mask, &act->sa_mask))
return -EFAULT;
siginitset(&new_ka.sa.sa_mask, mask);
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
ret |= __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer);
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
if (put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
return -EFAULT;
}
return ret;
}
extern long sys_sigpending(old_sigset_t *set);
extern asmlinkage long sys_sigpending(old_sigset_t *set);
asmlinkage long sys32_sigpending(old_sigset_t32 *set)
long sys32_sigpending(old_sigset_t32 *set)
{
old_sigset_t s;
int ret;
......@@ -185,9 +156,7 @@ asmlinkage long sys32_sigpending(old_sigset_t32 *set)
}
extern asmlinkage long sys_sigprocmask(int how, old_sigset_t *set,
extern long sys_sigprocmask(int how, old_sigset_t *set,
old_sigset_t *oset);
/*
......@@ -197,7 +166,7 @@ extern asmlinkage long sys_sigprocmask(int how, old_sigset_t *set,
* of a signed int (msr in 32-bit mode) and the register representation
* of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_sigprocmask(u32 how, old_sigset_t32 *set,
long sys32_sigprocmask(u32 how, old_sigset_t32 *set,
old_sigset_t32 *oset)
{
old_sigset_t s;
......@@ -252,23 +221,21 @@ long sys32_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
* Note that PPC32 puts the upper 32 bits of the sigmask in the
* unused part of the signal stackframe
*/
set.sig[0] = sigctx.oldmask + ((long)(sigctx._unused[3])<< 32);
set.sig[0] = sigctx.oldmask + ((long)(sigctx._unused[3]) << 32);
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sigmask_lock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sigmask_lock);
/* Last stacked signal - restore registers */
sr = (struct sigregs32*)(u64)sigctx.regs;
if (regs->msr & MSR_FP )
giveup_fpu(current);
/* Last stacked signal - restore registers */
sr = (struct sigregs32*)(u64)sigctx.regs;
/*
* copy the 32 bit register values off the user stack
* into the 32 bit register area
*/
if (copy_from_user(saved_regs, &sr->gp_regs,
sizeof(sr->gp_regs)))
if (copy_from_user(saved_regs, &sr->gp_regs, sizeof(sr->gp_regs)))
goto badframe;
/*
* The saved reg structure in the frame is an elf_grepset_t32,
......@@ -323,7 +290,6 @@ long sys32_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
goto badframe;
ret = regs->result;
return ret;
badframe:
......@@ -387,12 +353,13 @@ static void setup_frame32(struct pt_regs *regs, struct sigregs32 *frame,
*/
if (__copy_to_user(&frame->fp_regs, current->thread.fpr,
ELF_NFPREG * sizeof(double))
|| __put_user(0x38000000U + __NR_sigreturn, &frame->tramp[0]) /* li r0, __NR_sigreturn */
|| __put_user(0x44000002U, &frame->tramp[1])) /* sc */
/* li r0, __NR_sigreturn */
|| __put_user(0x38000000U + __NR_sigreturn, &frame->tramp[0])
/* sc */
|| __put_user(0x44000002U, &frame->tramp[1]))
goto badframe;
flush_icache_range((unsigned long) &frame->tramp[0],
(unsigned long) &frame->tramp[2]);
flush_icache_range((unsigned long)&frame->tramp[0],
(unsigned long)&frame->tramp[2]);
current->thread.fpscr = 0; /* turn off all fp exceptions */
newsp -= __SIGNAL_FRAMESIZE32;
......@@ -451,50 +418,45 @@ long sys32_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7, unsigned long r8,
struct pt_regs * regs)
{
struct rt_sigframe_32 *rt_stack_frame;
struct rt_sigframe_32 *rt_sf;
struct sigcontext32_struct sigctx;
struct sigregs32 *signalregs;
struct sigregs32 *sr;
int ret;
elf_gregset_t32 saved_regs; /* an array of 32 bit register values */
sigset_t signal_set;
stack_t stack;
sigset_t set;
stack_t st;
int i;
ret = 0;
/* Adjust the inputted reg1 to point to the first rt signal frame */
rt_stack_frame = (struct rt_sigframe_32 *)(regs->gpr[1] + __SIGNAL_FRAMESIZE32);
rt_sf = (struct rt_sigframe_32 *)(regs->gpr[1] + __SIGNAL_FRAMESIZE32);
/* Copy the information from the user stack */
if (copy_from_user(&sigctx, &rt_stack_frame->uc.uc_mcontext,
sizeof(sigctx))
|| copy_from_user(&signal_set, &rt_stack_frame->uc.uc_sigmask,
sizeof(signal_set))
|| copy_from_user(&stack,&rt_stack_frame->uc.uc_stack,
sizeof(stack)))
if (copy_from_user(&sigctx, &rt_sf->uc.uc_mcontext, sizeof(sigctx))
|| copy_from_user(&set, &rt_sf->uc.uc_sigmask, sizeof(set))
|| copy_from_user(&st,&rt_sf->uc.uc_stack, sizeof(st)))
goto badframe;
/*
* Unblock the signal that was processed
* After a signal handler runs -
* if the signal is blockable - the signal will be unblocked
* ( sigkill and sigstop are not blockable)
* (sigkill and sigstop are not blockable)
*/
sigdelsetmask(&signal_set, ~_BLOCKABLE);
sigdelsetmask(&set, ~_BLOCKABLE);
/* update the current based on the sigmask found in the rt_stackframe */
spin_lock_irq(&current->sigmask_lock);
current->blocked = signal_set;
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sigmask_lock);
/* If currently owning the floating point - give them up */
if (regs->msr & MSR_FP)
giveup_fpu(current);
/*
* Set to point to the next rt_sigframe - this is used to
* determine whether this is the last signal to process
*/
signalregs = (struct sigregs32 *) (u64)sigctx.regs;
/* If currently owning the floating point - give them up */
if (regs->msr & MSR_FP)
giveup_fpu(current);
if (copy_from_user(saved_regs, &signalregs->gp_regs,
sizeof(signalregs->gp_regs)))
sr = (struct sigregs32 *)(u64)sigctx.regs;
if (copy_from_user(saved_regs, &sr->gp_regs, sizeof(sr->gp_regs)))
goto badframe;
/*
* The saved reg structure in the frame is an elf_grepset_t32,
......@@ -544,7 +506,7 @@ long sys32_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
asmlinkage long sys32_rt_sigaction(int sig, const struct sigaction32 *act,
long sys32_rt_sigaction(int sig, const struct sigaction32 *act,
struct sigaction32 *oact, size_t sigsetsize)
{
struct k_sigaction new_ka, old_ka;
......@@ -599,7 +561,7 @@ asmlinkage long sys32_rt_sigaction(int sig, const struct sigaction32 *act,
}
extern asmlinkage long sys_rt_sigprocmask(int how, sigset_t *set,
extern long sys_rt_sigprocmask(int how, sigset_t *set,
sigset_t *oset, size_t sigsetsize);
/*
......@@ -609,7 +571,7 @@ extern asmlinkage long sys_rt_sigprocmask(int how, sigset_t *set,
* of a signed int (msr in 32-bit mode) and the register representation
* of a signed int (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_rt_sigprocmask(u32 how, sigset32_t *set,
long sys32_rt_sigprocmask(u32 how, sigset32_t *set,
sigset32_t *oset, size_t sigsetsize)
{
sigset_t s;
......@@ -649,10 +611,10 @@ asmlinkage long sys32_rt_sigprocmask(u32 how, sigset32_t *set,
}
extern asmlinkage long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
extern long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
asmlinkage long sys32_rt_sigpending(sigset32_t *set,
long sys32_rt_sigpending(sigset32_t *set,
__kernel_size_t32 sigsetsize)
{
sigset_t s;
......@@ -716,11 +678,12 @@ siginfo_t32 *siginfo64to32(siginfo_t32 *d, siginfo_t *s)
return d;
}
extern asmlinkage long sys_rt_sigtimedwait(const sigset_t *uthese,
extern long sys_rt_sigtimedwait(const sigset_t *uthese,
siginfo_t *uinfo, const struct timespec *uts,
size_t sigsetsize);
asmlinkage long sys32_rt_sigtimedwait(sigset32_t *uthese, siginfo_t32 *uinfo,
long sys32_rt_sigtimedwait(sigset32_t *uthese, siginfo_t32 *uinfo,
struct timespec32 *uts, __kernel_size_t32 sigsetsize)
{
sigset_t s;
......@@ -800,7 +763,7 @@ siginfo_t * siginfo32to64(siginfo_t *d, siginfo_t32 *s)
}
extern asmlinkage long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
extern long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
/*
* Note: it is necessary to treat pid and sig as unsigned ints, with the
......@@ -809,7 +772,7 @@ extern asmlinkage long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
* (msr in 32-bit mode) and the register representation of a signed int
* (msr in 64-bit mode) is performed.
*/
asmlinkage long sys32_rt_sigqueueinfo(u32 pid, u32 sig, siginfo_t32 *uinfo)
long sys32_rt_sigqueueinfo(u32 pid, u32 sig, siginfo_t32 *uinfo)
{
siginfo_t info;
siginfo_t32 info32;
......@@ -986,7 +949,7 @@ static void handle_signal32(unsigned long sig, siginfo_t *info,
/*
* Set up the signal frame
* Determine if an real time frame - siginfo required
* Determine if a real time frame and a siginfo is required
*/
if (ka->sa.sa_flags & SA_SIGINFO) {
siginfo64to32(&siginfo32bit,info);
......@@ -1048,7 +1011,6 @@ static void handle_signal32(unsigned long sig, siginfo_t *info,
recalc_sigpending();
spin_unlock_irq(&current->sigmask_lock);
}
return;
badframe:
......@@ -1068,7 +1030,7 @@ static void handle_signal32(unsigned long sig, siginfo_t *info,
* sigaltatck sys32_sigaltstack
*/
asmlinkage int sys32_sigaltstack(u32 newstack, u32 oldstack, int p3,
int sys32_sigaltstack(u32 newstack, u32 oldstack, int p3,
int p4, int p6, int p7, struct pt_regs *regs)
{
stack_t uss, uoss;
......@@ -1114,7 +1076,7 @@ asmlinkage int sys32_sigaltstack(u32 newstack, u32 oldstack, int p3,
/*
* Start of do_signal32 routine
*
* This routine gets control when a pemding signal needs to be processed
* This routine gets control when a pending signal needs to be processed
* in the 32 bit target thread -
*
* It handles both rt and non-rt signals
......@@ -1141,13 +1103,13 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs)
signr = get_signal_to_deliver(&info, regs);
if (signr > 0) {
ka = &current->sig->action[signr-1];
if ((ka->sa.sa_flags & SA_ONSTACK) &&
(!on_sig_stack(regs->gpr[1])))
if ((ka->sa.sa_flags & SA_ONSTACK)
&& (!on_sig_stack(regs->gpr[1])))
newsp = (current->sas_ss_sp + current->sas_ss_size);
else
newsp = regs->gpr[1];
newsp = frame = newsp - sizeof(struct sigregs32);
/* Whee! Actually deliver the signal. */
handle_signal32(signr, &info, oldset, regs, &newsp, frame);
}
......@@ -1165,10 +1127,9 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs)
return 0; /* no signals delivered */
/* Invoke correct stack setup routine */
if (ka->sa.sa_flags & SA_SIGINFO)
if (ka->sa.sa_flags & SA_SIGINFO)
setup_rt_frame32(regs, (struct sigregs32*)(u64)frame, newsp);
else
setup_frame32(regs, (struct sigregs32*)(u64)frame, newsp);
return 1;
}
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