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Commit b50819c2 authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Linus Torvalds
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[PATCH] s390/s390x unification (3/7) 

Merge s390x and s390 to one architecture.
parent 9491d77e
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Showing with 2613 additions and 282 deletions
arch/s390/kernel/compat_signal.c 0 → 100644
View file @ b50819c2
/*
* arch/s390/kernel/signal32.c
*
* S390 version
* Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
* Gerhard Tonn (ton@de.ibm.com)
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* 1997-11-28 Modified for POSIX.1b signals by Richard Henderson
*/
#include <linux/config.h>
#include <linux/compat.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/tty.h>
#include <linux/personality.h>
#include <linux/binfmts.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/lowcore.h>
#include "compat_linux.h"
#include "compat_ptrace.h"
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
typedef struct
{
__u8 callee_used_stack[__SIGNAL_FRAMESIZE32];
struct sigcontext32 sc;
_sigregs32 sregs;
__u8 retcode[S390_SYSCALL_SIZE];
} sigframe32;
typedef struct
{
__u8 callee_used_stack[__SIGNAL_FRAMESIZE32];
__u8 retcode[S390_SYSCALL_SIZE];
struct siginfo32 info;
struct ucontext32 uc;
} rt_sigframe32;
asmlinkage int FASTCALL(do_signal(struct pt_regs *regs, sigset_t *oldset));
int do_signal32(struct pt_regs *regs, sigset_t *oldset);
int copy_siginfo_to_user32(siginfo_t32 *to, siginfo_t *from)
{
int err;
if (!access_ok (VERIFY_WRITE, to, sizeof(siginfo_t32)))
return -EFAULT;
/* If you change siginfo_t structure, please be sure
this code is fixed accordingly.
It should never copy any pad contained in the structure
to avoid security leaks, but must copy the generic
3 ints plus the relevant union member.
This routine must convert siginfo from 64bit to 32bit as well
at the same time. */
err = __put_user(from->si_signo, &to->si_signo);
err |= __put_user(from->si_errno, &to->si_errno);
err |= __put_user((short)from->si_code, &to->si_code);
if (from->si_code < 0)
err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
else {
switch (from->si_code >> 16) {
case __SI_KILL >> 16:
err |= __put_user(from->si_pid, &to->si_pid);
err |= __put_user(from->si_uid, &to->si_uid);
break;
case __SI_CHLD >> 16:
err |= __put_user(from->si_pid, &to->si_pid);
err |= __put_user(from->si_uid, &to->si_uid);
err |= __put_user(from->si_utime, &to->si_utime);
err |= __put_user(from->si_stime, &to->si_stime);
err |= __put_user(from->si_status, &to->si_status);
break;
case __SI_FAULT >> 16:
err |= __put_user((unsigned long) from->si_addr,
&to->si_addr);
break;
case __SI_POLL >> 16:
case __SI_TIMER >> 16:
err |= __put_user(from->si_band, &to->si_band);
err |= __put_user(from->si_fd, &to->si_fd);
break;
default:
break;
/* case __SI_RT: This is not generated by the kernel as of now. */
}
}
return err;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
sys32_sigsuspend(struct pt_regs * regs,int history0, int history1, old_sigset_t mask)
{
sigset_t saveset;
mask &= _BLOCKABLE;
spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
siginitset(&current->blocked, mask);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
regs->gprs[2] = -EINTR;
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
if (do_signal32(regs, &saveset))
return -EINTR;
}
}
asmlinkage int
sys32_rt_sigsuspend(struct pt_regs * regs,compat_sigset_t *unewset, size_t sigsetsize)
{
sigset_t saveset, newset;
compat_sigset_t set32;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(sigset_t))
return -EINVAL;
if (copy_from_user(&set32, unewset, sizeof(set32)))
return -EFAULT;
switch (_NSIG_WORDS) {
case 4: newset.sig[3] = set32.sig[6] + (((long)set32.sig[7]) << 32);
case 3: newset.sig[2] = set32.sig[4] + (((long)set32.sig[5]) << 32);
case 2: newset.sig[1] = set32.sig[2] + (((long)set32.sig[3]) << 32);
case 1: newset.sig[0] = set32.sig[0] + (((long)set32.sig[1]) << 32);
}
sigdelsetmask(&newset, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
current->blocked = newset;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
regs->gprs[2] = -EINTR;
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
if (do_signal32(regs, &saveset))
return -EINTR;
}
}
asmlinkage int
sys32_sigaction(int sig, const struct old_sigaction32 *act,
struct old_sigaction32 *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
if (act) {
compat_old_sigset_t mask;
if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
__get_user((unsigned long)new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user((unsigned long)new_ka.sa.sa_restorer, &act->sa_restorer))
return -EFAULT;
__get_user(new_ka.sa.sa_flags, &act->sa_flags);
__get_user(mask, &act->sa_mask);
siginitset(&new_ka.sa.sa_mask, mask);
}
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((unsigned long)old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user((unsigned long)old_ka.sa.sa_restorer, &oact->sa_restorer))
return -EFAULT;
__put_user(old_ka.sa.sa_flags, &oact->sa_flags);
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
}
int
do_sigaction(int sig, const struct k_sigaction *act, struct k_sigaction *oact);
asmlinkage long
sys32_rt_sigaction(int sig, const struct sigaction32 *act,
struct sigaction32 *oact, size_t sigsetsize)
{
struct k_sigaction new_ka, old_ka;
int ret;
compat_sigset_t set32;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (act) {
ret = get_user((unsigned long)new_ka.sa.sa_handler, &act->sa_handler);
ret |= __copy_from_user(&set32, &act->sa_mask,
sizeof(compat_sigset_t));
switch (_NSIG_WORDS) {
case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
| (((long)set32.sig[7]) << 32);
case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
| (((long)set32.sig[5]) << 32);
case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
| (((long)set32.sig[3]) << 32);
case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
| (((long)set32.sig[1]) << 32);
}
ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
if (ret)
return -EFAULT;
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
switch (_NSIG_WORDS) {
case 4:
set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
set32.sig[6] = old_ka.sa.sa_mask.sig[3];
case 3:
set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
set32.sig[4] = old_ka.sa.sa_mask.sig[2];
case 2:
set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
set32.sig[2] = old_ka.sa.sa_mask.sig[1];
case 1:
set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
set32.sig[0] = old_ka.sa.sa_mask.sig[0];
}
ret = put_user((unsigned long)old_ka.sa.sa_handler, &oact->sa_handler);
ret |= __copy_to_user(&oact->sa_mask, &set32,
sizeof(compat_sigset_t));
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
}
return ret;
}
asmlinkage int
sys32_sigaltstack(const stack_t32 *uss, stack_t32 *uoss, struct pt_regs *regs)
{
stack_t kss, koss;
int ret, err = 0;
mm_segment_t old_fs = get_fs();
if (uss) {
if (!access_ok(VERIFY_READ, uss, sizeof(*uss)))
return -EFAULT;
err |= __get_user((unsigned long) kss.ss_sp, &uss->ss_sp);
err |= __get_user(kss.ss_size, &uss->ss_size);
err |= __get_user(kss.ss_flags, &uss->ss_flags);
if (err)
return -EFAULT;
}
set_fs (KERNEL_DS);
ret = do_sigaltstack(uss ? &kss : NULL , uoss ? &koss : NULL, regs->gprs[15]);
set_fs (old_fs);
if (!ret && uoss) {
if (!access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)))
return -EFAULT;
err |= __put_user((unsigned long) koss.ss_sp, &uoss->ss_sp);
err |= __put_user(koss.ss_size, &uoss->ss_size);
err |= __put_user(koss.ss_flags, &uoss->ss_flags);
if (err)
return -EFAULT;
}
return ret;
}
static int save_sigregs32(struct pt_regs *regs,_sigregs32 *sregs)
{
_s390_regs_common32 regs32;
int err, i;
regs32.psw.mask = PSW32_USER_BITS |
((__u32)(regs->psw.mask >> 32) & PSW32_MASK_CC);
regs32.psw.addr = PSW32_ADDR_AMODE31 | (__u32) regs->psw.addr;
for (i = 0; i < NUM_GPRS; i++)
regs32.gprs[i] = (__u32) regs->gprs[i];
memcpy(regs32.acrs, regs->acrs, sizeof(regs32.acrs));
err = __copy_to_user(&sregs->regs, &regs32, sizeof(regs32));
if (err)
return err;
save_fp_regs(&current->thread.fp_regs);
/* s390_fp_regs and _s390_fp_regs32 are the same ! */
return __copy_to_user(&sregs->fpregs, &current->thread.fp_regs,
sizeof(_s390_fp_regs32));
}
static int restore_sigregs32(struct pt_regs *regs,_sigregs32 *sregs)
{
_s390_regs_common32 regs32;
int err, i;
err = __copy_from_user(&regs32, &sregs->regs, sizeof(regs32));
if (err)
return err;
regs->psw.mask = PSW_USER32_BITS |
(__u64)(regs32.psw.mask & PSW32_MASK_CC) << 32;
regs->psw.addr = (__u64)(regs32.psw.addr & PSW32_ADDR_INSN);
for (i = 0; i < NUM_GPRS; i++)
regs->gprs[i] = (__u64) regs32.gprs[i];
memcpy(regs->acrs, regs32.acrs, sizeof(regs32.acrs));
err = __copy_from_user(&current->thread.fp_regs, &sregs->fpregs,
sizeof(_s390_fp_regs32));
current->thread.fp_regs.fpc &= FPC_VALID_MASK;
if (err)
return err;
restore_fp_regs(&current->thread.fp_regs);
regs->trap = -1; /* disable syscall checks */
return 0;
}
asmlinkage long sys32_sigreturn(struct pt_regs *regs)
{
sigframe32 *frame = (sigframe32 *)regs->gprs[15];
sigset_t set;
if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
if (restore_sigregs32(regs, &frame->sregs))
goto badframe;
return regs->gprs[2];
badframe:
force_sig(SIGSEGV, current);
return 0;
}
asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs)
{
rt_sigframe32 *frame = (rt_sigframe32 *)regs->gprs[15];
sigset_t set;
stack_t st;
__u32 ss_sp;
int err;
mm_segment_t old_fs = get_fs();
if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
if (restore_sigregs32(regs, &frame->uc.uc_mcontext))
goto badframe;
err = __get_user(ss_sp, &frame->uc.uc_stack.ss_sp);
st.ss_sp = (void *) A((unsigned long)ss_sp);
err |= __get_user(st.ss_size, &frame->uc.uc_stack.ss_size);
err |= __get_user(st.ss_flags, &frame->uc.uc_stack.ss_flags);
if (err)
goto badframe;
/* It is more difficult to avoid calling this function than to
call it and ignore errors. */
set_fs (KERNEL_DS);
do_sigaltstack(&st, NULL, regs->gprs[15]);
set_fs (old_fs);
return regs->gprs[2];
badframe:
force_sig(SIGSEGV, current);
return 0;
}
/*
* Set up a signal frame.
*/
/*
* Determine which stack to use..
*/
static inline void *
get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
{
unsigned long sp;
/* Default to using normal stack */
sp = (unsigned long) A(regs->gprs[15]);
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
if (! on_sig_stack(sp))
sp = current->sas_ss_sp + current->sas_ss_size;
}
/* This is the legacy signal stack switching. */
else if (!user_mode(regs) &&
!(ka->sa.sa_flags & SA_RESTORER) &&
ka->sa.sa_restorer) {
sp = (unsigned long) ka->sa.sa_restorer;
}
return (void *)((sp - frame_size) & -8ul);
}
static inline int map_signal(int sig)
{
if (current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
&& sig < 32)
return current_thread_info()->exec_domain->signal_invmap[sig];
else
return sig;
}
static void setup_frame32(int sig, struct k_sigaction *ka,
sigset_t *set, struct pt_regs * regs)
{
sigframe32 *frame = get_sigframe(ka, regs, sizeof(sigframe32));
if (!access_ok(VERIFY_WRITE, frame, sizeof(sigframe32)))
goto give_sigsegv;
if (__copy_to_user(&frame->sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE32))
goto give_sigsegv;
if (save_sigregs32(regs, &frame->sregs))
goto give_sigsegv;
if (__put_user((unsigned long) &frame->sregs, &frame->sc.sregs))
goto give_sigsegv;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
regs->gprs[14] = (__u64) ka->sa.sa_restorer;
} else {
regs->gprs[14] = (__u64) frame->retcode;
if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn,
(u16 *)(frame->retcode)))
goto give_sigsegv;
}
/* Set up backchain. */
if (__put_user(regs->gprs[15], (unsigned int *) frame))
goto give_sigsegv;
/* Set up registers for signal handler */
regs->gprs[15] = (__u64) frame;
regs->psw.addr = (__u64) ka->sa.sa_handler;
regs->psw.mask = PSW_USER32_BITS;
regs->gprs[2] = map_signal(sig);
regs->gprs[3] = (__u64) &frame->sc;
/* We forgot to include these in the sigcontext.
To avoid breaking binary compatibility, they are passed as args. */
regs->gprs[4] = current->thread.trap_no;
regs->gprs[5] = current->thread.prot_addr;
return;
give_sigsegv:
if (sig == SIGSEGV)
ka->sa.sa_handler = SIG_DFL;
force_sig(SIGSEGV, current);
}
static void setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs * regs)
{
int err = 0;
rt_sigframe32 *frame = get_sigframe(ka, regs, sizeof(rt_sigframe32));
if (!access_ok(VERIFY_WRITE, frame, sizeof(rt_sigframe32)))
goto give_sigsegv;
if (copy_siginfo_to_user32(&frame->info, info))
goto give_sigsegv;
/* Create the ucontext. */
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->gprs[15]),
&frame->uc.uc_stack.ss_flags);
err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
err |= save_sigregs32(regs, &frame->uc.uc_mcontext);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
goto give_sigsegv;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
regs->gprs[14] = (__u64) ka->sa.sa_restorer;
} else {
regs->gprs[14] = (__u64) frame->retcode;
err |= __put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn,
(u16 *)(frame->retcode));
}
/* Set up backchain. */
if (__put_user(regs->gprs[15], (unsigned int *) frame))
goto give_sigsegv;
/* Set up registers for signal handler */
regs->gprs[15] = (__u64) frame;
regs->psw.addr = (__u64) ka->sa.sa_handler;
regs->psw.mask = PSW_USER32_BITS;
regs->gprs[2] = map_signal(sig);
regs->gprs[3] = (__u64) &frame->info;
regs->gprs[4] = (__u64) &frame->uc;
return;
give_sigsegv:
if (sig == SIGSEGV)
ka->sa.sa_handler = SIG_DFL;
force_sig(SIGSEGV, current);
}
/*
* OK, we're invoking a handler
*/
static void
handle_signal32(unsigned long sig, siginfo_t *info, sigset_t *oldset,
struct pt_regs * regs)
{
struct k_sigaction *ka = &current->sighand->action[sig-1];
/* Are we from a system call? */
if (regs->trap == __LC_SVC_OLD_PSW) {
/* If so, check system call restarting.. */
switch (regs->gprs[2]) {
case -ERESTARTNOHAND:
regs->gprs[2] = -EINTR;
break;
case -ERESTARTSYS:
if (!(ka->sa.sa_flags & SA_RESTART)) {
regs->gprs[2] = -EINTR;
break;
}
/* fallthrough */
case -ERESTARTNOINTR:
regs->gprs[2] = regs->orig_gpr2;
regs->psw.addr -= 2;
}
}
/* Set up the stack frame */
if (ka->sa.sa_flags & SA_SIGINFO)
setup_rt_frame32(sig, ka, info, oldset, regs);
else
setup_frame32(sig, ka, oldset, regs);
if (ka->sa.sa_flags & SA_ONESHOT)
ka->sa.sa_handler = SIG_DFL;
if (!(ka->sa.sa_flags & SA_NODEFER)) {
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
sigaddset(&current->blocked,sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
}
}
/*
* 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
* mistake.
*
* Note that we go through the signals twice: once to check the signals that
* the kernel can handle, and then we build all the user-level signal handling
* stack-frames in one go after that.
*/
int do_signal32(struct pt_regs *regs, sigset_t *oldset)
{
siginfo_t info;
int signr;
/*
* We want the common case to go fast, which
* is why we may in certain cases get here from
* kernel mode. Just return without doing anything
* if so.
*/
if (!user_mode(regs))
return 1;
if (!oldset)
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
handle_signal32(signr, &info, oldset, regs);
return 1;
}
/* Did we come from a system call? */
if ( regs->trap == __LC_SVC_OLD_PSW /* System Call! */ ) {
/* Restart the system call - no handlers present */
if (regs->gprs[2] == -ERESTARTNOHAND ||
regs->gprs[2] == -ERESTARTSYS ||
regs->gprs[2] == -ERESTARTNOINTR) {
regs->gprs[2] = regs->orig_gpr2;
regs->psw.addr -= 2;
}
}
return 0;
}
arch/s390/kernel/compat_wrapper.S 0 → 100644
View file @ b50819c2
/*
* arch/s390/kernel/sys_wrapper31.S
* wrapper for 31 bit compatible system calls.
*
* S390 version
* Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Gerhard Tonn (ton@de.ibm.com),
*/
.globl sys32_exit_wrapper
sys32_exit_wrapper:
lgfr %r2,%r2 # int
jg sys_exit # branch to sys_exit
.globl sys32_read_wrapper
sys32_read_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # char *
llgfr %r4,%r4 # size_t
jg sys32_read # branch to sys_read
.globl sys32_write_wrapper
sys32_write_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # const char *
llgfr %r4,%r4 # size_t
jg sys32_write # branch to system call
.globl sys32_open_wrapper
sys32_open_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
lgfr %r4,%r4 # int
jg sys_open # branch to system call
.globl sys32_close_wrapper
sys32_close_wrapper:
llgfr %r2,%r2 # unsigned int
jg sys_close # branch to system call
.globl sys32_creat_wrapper
sys32_creat_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
jg sys_creat # branch to system call
.globl sys32_link_wrapper
sys32_link_wrapper:
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # const char *
jg sys_link # branch to system call
.globl sys32_unlink_wrapper
sys32_unlink_wrapper:
llgtr %r2,%r2 # const char *
jg sys_unlink # branch to system call
.globl sys32_chdir_wrapper
sys32_chdir_wrapper:
llgtr %r2,%r2 # const char *
jg sys_chdir # branch to system call
.globl sys32_time_wrapper
sys32_time_wrapper:
llgtr %r2,%r2 # int *
jg sys_time # branch to system call
.globl sys32_mknod_wrapper
sys32_mknod_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
llgfr %r4,%r4 # dev
jg sys_mknod # branch to system call
.globl sys32_chmod_wrapper
sys32_chmod_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # mode_t
jg sys_chmod # branch to system call
.globl sys32_lchown16_wrapper
sys32_lchown16_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # __kernel_old_uid_emu31_t
llgfr %r4,%r4 # __kernel_old_uid_emu31_t
jg sys32_lchown16 # branch to system call
.globl sys32_lseek_wrapper
sys32_lseek_wrapper:
llgfr %r2,%r2 # unsigned int
lgfr %r3,%r3 # off_t
llgfr %r4,%r4 # unsigned int
jg sys_lseek # branch to system call
#sys32_getpid_wrapper # void
.globl sys32_mount_wrapper
sys32_mount_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # char *
llgfr %r5,%r5 # unsigned long
llgtr %r6,%r6 # void *
jg sys32_mount # branch to system call
.globl sys32_oldumount_wrapper
sys32_oldumount_wrapper:
llgtr %r2,%r2 # char *
jg sys_oldumount # branch to system call
.globl sys32_setuid16_wrapper
sys32_setuid16_wrapper:
llgfr %r2,%r2 # __kernel_old_uid_emu31_t
jg sys32_setuid16 # branch to system call
#sys32_getuid16_wrapper # void
.globl sys32_ptrace_wrapper
sys32_ptrace_wrapper:
lgfr %r2,%r2 # long
lgfr %r3,%r3 # long
llgtr %r4,%r4 # long
llgfr %r5,%r5 # long
jg sys_ptrace # branch to system call
.globl sys32_alarm_wrapper
sys32_alarm_wrapper:
llgtr %r2,%r2 # unsigned int
jg sys_alarm # branch to system call
#sys32_pause_wrapper # void
.globl compat_sys_utime_wrapper
compat_sys_utime_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # struct compat_utimbuf *
jg compat_sys_utime # branch to system call
.globl sys32_access_wrapper
sys32_access_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
jg sys_access # branch to system call
.globl sys32_nice_wrapper
sys32_nice_wrapper:
lgfr %r2,%r2 # int
jg sys_nice # branch to system call
#sys32_sync_wrapper # void
.globl sys32_kill_wrapper
sys32_kill_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
jg sys_kill # branch to system call
.globl sys32_rename_wrapper
sys32_rename_wrapper:
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # const char *
jg sys_rename # branch to system call
.globl sys32_mkdir_wrapper
sys32_mkdir_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
jg sys_mkdir # branch to system call
.globl sys32_rmdir_wrapper
sys32_rmdir_wrapper:
llgtr %r2,%r2 # const char *
jg sys_rmdir # branch to system call
.globl sys32_dup_wrapper
sys32_dup_wrapper:
llgfr %r2,%r2 # unsigned int
jg sys_dup # branch to system call
.globl sys32_pipe_wrapper
sys32_pipe_wrapper:
llgtr %r2,%r2 # u32 *
jg sys_pipe # branch to system call
.globl compat_sys_times_wrapper
compat_sys_times_wrapper:
llgtr %r2,%r2 # struct compat_tms *
jg compat_sys_times # branch to system call
.globl sys32_brk_wrapper
sys32_brk_wrapper:
llgtr %r2,%r2 # unsigned long
jg sys_brk # branch to system call
.globl sys32_setgid16_wrapper
sys32_setgid16_wrapper:
llgfr %r2,%r2 # __kernel_old_gid_emu31_t
jg sys32_setgid16 # branch to system call
#sys32_getgid16_wrapper # void
.globl sys32_signal_wrapper
sys32_signal_wrapper:
lgfr %r2,%r2 # int
llgfr %r3,%r3 # __sighandler_t
jg sys_signal
#sys32_geteuid16_wrapper # void
#sys32_getegid16_wrapper # void
.globl sys32_acct_wrapper
sys32_acct_wrapper:
llgtr %r2,%r2 # char *
jg sys_acct # branch to system call
.globl sys32_umount_wrapper
sys32_umount_wrapper:
llgtr %r2,%r2 # char *
lgfr %r3,%r3 # int
jg sys_umount # branch to system call
.globl sys32_ioctl_wrapper
sys32_ioctl_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned int
llgfr %r4,%r4 # unsigned int
jg sys32_ioctl # branch to system call
.globl compat_sys_fcntl_wrapper
compat_sys_fcntl_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned int
llgfr %r4,%r4 # unsigned long
jg compat_sys_fcntl # branch to system call
.globl sys32_setpgid_wrapper
sys32_setpgid_wrapper:
lgfr %r2,%r2 # pid_t
lgfr %r3,%r3 # pid_t
jg sys_setpgid # branch to system call
.globl sys32_umask_wrapper
sys32_umask_wrapper:
lgfr %r3,%r3 # int
jg sys_umask # branch to system call
.globl sys32_chroot_wrapper
sys32_chroot_wrapper:
llgtr %r2,%r2 # char *
jg sys_chroot # branch to system call
.globl sys32_ustat_wrapper
sys32_ustat_wrapper:
llgfr %r2,%r2 # dev_t
llgtr %r3,%r3 # struct ustat *
jg sys_ustat
.globl sys32_dup2_wrapper
sys32_dup2_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned int
jg sys_dup2 # branch to system call
#sys32_getppid_wrapper # void
#sys32_getpgrp_wrapper # void
#sys32_setsid_wrapper # void
.globl sys32_sigaction_wrapper
sys32_sigaction_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # const struct old_sigaction *
jg sys32_sigaction # branch to system call
.globl sys32_setreuid16_wrapper
sys32_setreuid16_wrapper:
llgfr %r2,%r2 # __kernel_old_uid_emu31_t
llgfr %r3,%r3 # __kernel_old_uid_emu31_t
jg sys32_setreuid16 # branch to system call
.globl sys32_setregid16_wrapper
sys32_setregid16_wrapper:
llgfr %r2,%r2 # __kernel_old_gid_emu31_t
llgfr %r3,%r3 # __kernel_old_gid_emu31_t
jg sys32_setregid16 # branch to system call
#sys32_sigsuspend_wrapper # done in sigsuspend_glue
.globl compat_sys_sigpending_wrapper
compat_sys_sigpending_wrapper:
llgtr %r2,%r2 # compat_old_sigset_t *
jg compat_sys_sigpending # branch to system call
.globl sys32_sethostname_wrapper
sys32_sethostname_wrapper:
llgtr %r2,%r2 # char *
lgfr %r3,%r3 # int
jg sys_sethostname # branch to system call
.globl sys32_setrlimit_wrapper
sys32_setrlimit_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # struct rlimit_emu31 *
jg sys32_setrlimit # branch to system call
.globl sys32_old_getrlimit_wrapper
sys32_old_getrlimit_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # struct rlimit_emu31 *
jg sys32_old_getrlimit # branch to system call
.globl sys32_getrlimit_wrapper
sys32_getrlimit_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # struct rlimit_emu31 *
jg sys32_getrlimit # branch to system call
.globl sys32_mmap2_wrapper
sys32_mmap2_wrapper:
llgtr %r2,%r2 # struct mmap_arg_struct_emu31 *
jg sys32_mmap2 # branch to system call
.globl sys32_getrusage_wrapper
sys32_getrusage_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct rusage_emu31 *
jg sys32_getrusage # branch to system call
.globl sys32_gettimeofday_wrapper
sys32_gettimeofday_wrapper:
llgtr %r2,%r2 # struct timeval_emu31 *
llgtr %r3,%r3 # struct timezone *
jg sys32_gettimeofday # branch to system call
.globl sys32_settimeofday_wrapper
sys32_settimeofday_wrapper:
llgtr %r2,%r2 # struct timeval_emu31 *
llgtr %r3,%r3 # struct timezone *
jg sys32_settimeofday # branch to system call
.globl sys32_getgroups16_wrapper
sys32_getgroups16_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # __kernel_old_gid_emu31_t *
jg sys32_getgroups16 # branch to system call
.globl sys32_setgroups16_wrapper
sys32_setgroups16_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # __kernel_old_gid_emu31_t *
jg sys32_setgroups16 # branch to system call
.globl sys32_symlink_wrapper
sys32_symlink_wrapper:
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # const char *
jg sys_symlink # branch to system call
.globl sys32_readlink_wrapper
sys32_readlink_wrapper:
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # char *
lgfr %r4,%r4 # int
jg sys_readlink # branch to system call
.globl sys32_uselib_wrapper
sys32_uselib_wrapper:
llgtr %r2,%r2 # const char *
jg sys_uselib # branch to system call
.globl sys32_swapon_wrapper
sys32_swapon_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # int
jg sys_swapon # branch to system call
.globl sys32_reboot_wrapper
sys32_reboot_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
llgfr %r4,%r4 # unsigned int
llgtr %r5,%r5 # void *
jg sys_reboot # branch to system call
.globl old32_readdir_wrapper
old32_readdir_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # void *
llgfr %r4,%r4 # unsigned int
jg old32_readdir # branch to system call
.globl old32_mmap_wrapper
old32_mmap_wrapper:
llgtr %r2,%r2 # struct mmap_arg_struct_emu31 *
jg old32_mmap # branch to system call
.globl sys32_munmap_wrapper
sys32_munmap_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # size_t
jg sys_munmap # branch to system call
.globl sys32_truncate_wrapper
sys32_truncate_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # unsigned long
jg sys_truncate # branch to system call
.globl sys32_ftruncate_wrapper
sys32_ftruncate_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned long
jg sys_ftruncate # branch to system call
.globl sys32_fchmod_wrapper
sys32_fchmod_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # mode_t
jg sys_fchmod # branch to system call
.globl sys32_fchown16_wrapper
sys32_fchown16_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # __kernel_old_uid_emu31_t *
llgtr %r4,%r4 # __kernel_old_gid_emu31_t *
jg sys32_fchown16 # branch to system call
.globl sys32_getpriority_wrapper
sys32_getpriority_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
jg sys_getpriority # branch to system call
.globl sys32_setpriority_wrapper
sys32_setpriority_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
lgfr %r4,%r4 # int
jg sys_setpriority # branch to system call
.globl compat_sys_statfs_wrapper
compat_sys_statfs_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # struct compat_statfs *
jg compat_sys_statfs # branch to system call
.globl compat_sys_fstatfs_wrapper
compat_sys_fstatfs_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # struct compat_statfs *
jg compat_sys_fstatfs # branch to system call
.globl compat_sys_socketcall_wrapper
compat_sys_socketcall_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # u32 *
jg compat_sys_socketcall # branch to system call
.globl sys32_syslog_wrapper
sys32_syslog_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # char *
lgfr %r4,%r4 # int
jg sys_syslog # branch to system call
.globl compat_sys_setitimer_wrapper
compat_sys_setitimer_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct itimerval_emu31 *
llgtr %r4,%r4 # struct itimerval_emu31 *
jg compat_sys_setitimer # branch to system call
.globl compat_sys_getitimer_wrapper
compat_sys_getitimer_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct itimerval_emu31 *
jg compat_sys_getitimer # branch to system call
.globl compat_sys_newstat_wrapper
compat_sys_newstat_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # struct stat_emu31 *
jg compat_sys_newstat # branch to system call
.globl compat_sys_newlstat_wrapper
compat_sys_newlstat_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # struct stat_emu31 *
jg compat_sys_newlstat # branch to system call
.globl compat_sys_newfstat_wrapper
compat_sys_newfstat_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # struct stat_emu31 *
jg compat_sys_newfstat # branch to system call
#sys32_vhangup_wrapper # void
.globl sys32_wait4_wrapper
sys32_wait4_wrapper:
lgfr %r2,%r2 # pid_t
llgtr %r3,%r3 # unsigned int *
lgfr %r4,%r4 # int
llgtr %r5,%r5 # struct rusage *
jg sys32_wait4 # branch to system call
.globl sys32_swapoff_wrapper
sys32_swapoff_wrapper:
llgtr %r2,%r2 # const char *
jg sys_swapoff # branch to system call
.globl sys32_sysinfo_wrapper
sys32_sysinfo_wrapper:
llgtr %r2,%r2 # struct sysinfo_emu31 *
jg sys32_sysinfo # branch to system call
.globl sys32_ipc_wrapper
sys32_ipc_wrapper:
llgfr %r2,%r2 # uint
lgfr %r3,%r3 # int
lgfr %r4,%r4 # int
lgfr %r5,%r5 # int
llgtr %r6,%r6 # void *
jg sys32_ipc # branch to system call
.globl sys32_fsync_wrapper
sys32_fsync_wrapper:
llgfr %r2,%r2 # unsigned int
jg sys_fsync # branch to system call
#sys32_sigreturn_wrapper # done in sigreturn_glue
#sys32_clone_wrapper # done in clone_glue
.globl sys32_setdomainname_wrapper
sys32_setdomainname_wrapper:
llgtr %r2,%r2 # char *
lgfr %r3,%r3 # int
jg sys_setdomainname # branch to system call
.globl sys32_newuname_wrapper
sys32_newuname_wrapper:
llgtr %r2,%r2 # struct new_utsname *
jg s390x_newuname # branch to system call
.globl sys32_adjtimex_wrapper
sys32_adjtimex_wrapper:
llgtr %r2,%r2 # struct timex_emu31 *
jg sys32_adjtimex # branch to system call
.globl sys32_mprotect_wrapper
sys32_mprotect_wrapper:
llgtr %r2,%r2 # unsigned long (actually pointer
llgfr %r3,%r3 # size_t
llgfr %r4,%r4 # unsigned long
jg sys_mprotect # branch to system call
.globl compat_sys_sigprocmask_wrapper
compat_sys_sigprocmask_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # compat_old_sigset_t *
llgtr %r4,%r4 # compat_old_sigset_t *
jg compat_sys_sigprocmask # branch to system call
.globl sys32_init_module_wrapper
sys32_init_module_wrapper:
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # struct module *
jg sys32_init_module # branch to system call
.globl sys32_delete_module_wrapper
sys32_delete_module_wrapper:
llgtr %r2,%r2 # const char *
jg sys32_delete_module # branch to system call
.globl sys32_quotactl_wrapper
sys32_quotactl_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # const char *
lgfr %r4,%r4 # int
llgtr %r5,%r5 # caddr_t
jg sys_quotactl # branch to system call
.globl sys32_getpgid_wrapper
sys32_getpgid_wrapper:
lgfr %r2,%r2 # pid_t
jg sys_getpgid # branch to system call
.globl sys32_fchdir_wrapper
sys32_fchdir_wrapper:
llgfr %r2,%r2 # unsigned int
jg sys_fchdir # branch to system call
.globl sys32_bdflush_wrapper
sys32_bdflush_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # long
jg sys_bdflush # branch to system call
.globl sys32_sysfs_wrapper
sys32_sysfs_wrapper:
lgfr %r2,%r2 # int
llgfr %r3,%r3 # unsigned long
llgfr %r4,%r4 # unsigned long
jg sys_sysfs # branch to system call
.globl sys32_personality_wrapper
sys32_personality_wrapper:
llgfr %r2,%r2 # unsigned long
jg s390x_personality # branch to system call
.globl sys32_setfsuid16_wrapper
sys32_setfsuid16_wrapper:
llgfr %r2,%r2 # __kernel_old_uid_emu31_t
jg sys32_setfsuid16 # branch to system call
.globl sys32_setfsgid16_wrapper
sys32_setfsgid16_wrapper:
llgfr %r2,%r2 # __kernel_old_gid_emu31_t
jg sys32_setfsgid16 # branch to system call
.globl sys32_llseek_wrapper
sys32_llseek_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned long
llgfr %r4,%r4 # unsigned long
llgtr %r5,%r5 # loff_t *
llgfr %r6,%r6 # unsigned int
jg sys_llseek # branch to system call
.globl sys32_getdents_wrapper
sys32_getdents_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # void *
llgfr %r4,%r4 # unsigned int
jg sys32_getdents # branch to system call
.globl sys32_select_wrapper
sys32_select_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # fd_set *
llgtr %r4,%r4 # fd_set *
llgtr %r5,%r5 # fd_set *
llgtr %r6,%r6 # struct timeval_emu31 *
jg sys32_select # branch to system call
.globl sys32_flock_wrapper
sys32_flock_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned int
jg sys_flock # branch to system call
.globl sys32_msync_wrapper
sys32_msync_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # size_t
lgfr %r4,%r4 # int
jg sys_msync # branch to system call
.globl sys32_readv_wrapper
sys32_readv_wrapper:
llgfr %r2,%r2 # unsigned long
llgtr %r3,%r3 # const struct iovec_emu31 *
llgfr %r4,%r4 # unsigned long
jg sys32_readv # branch to system call
.globl sys32_writev_wrapper
sys32_writev_wrapper:
llgfr %r2,%r2 # unsigned long
llgtr %r3,%r3 # const struct iovec_emu31 *
llgfr %r4,%r4 # unsigned long
jg sys32_writev # branch to system call
.globl sys32_getsid_wrapper
sys32_getsid_wrapper:
lgfr %r2,%r2 # pid_t
jg sys_getsid # branch to system call
.globl sys32_fdatasync_wrapper
sys32_fdatasync_wrapper:
llgfr %r2,%r2 # unsigned int
jg sys_fdatasync # branch to system call
#sys32_sysctl_wrapper # tbd
.globl sys32_mlock_wrapper
sys32_mlock_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # size_t
jg sys_mlock # branch to system call
.globl sys32_munlock_wrapper
sys32_munlock_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # size_t
jg sys_munlock # branch to system call
.globl sys32_mlockall_wrapper
sys32_mlockall_wrapper:
lgfr %r2,%r2 # int
jg sys_mlockall # branch to system call
#sys32_munlockall_wrapper # void
.globl sys32_sched_setparam_wrapper
sys32_sched_setparam_wrapper:
lgfr %r2,%r2 # pid_t
llgtr %r3,%r3 # struct sched_param *
jg sys_sched_setparam # branch to system call
.globl sys32_sched_getparam_wrapper
sys32_sched_getparam_wrapper:
lgfr %r2,%r2 # pid_t
llgtr %r3,%r3 # struct sched_param *
jg sys_sched_getparam # branch to system call
.globl sys32_sched_setscheduler_wrapper
sys32_sched_setscheduler_wrapper:
lgfr %r2,%r2 # pid_t
lgfr %r3,%r3 # int
llgtr %r4,%r4 # struct sched_param *
jg sys_sched_setscheduler # branch to system call
.globl sys32_sched_getscheduler_wrapper
sys32_sched_getscheduler_wrapper:
lgfr %r2,%r2 # pid_t
jg sys_sched_getscheduler # branch to system call
#sys32_sched_yield_wrapper # void
.globl sys32_sched_get_priority_max_wrapper
sys32_sched_get_priority_max_wrapper:
lgfr %r2,%r2 # int
jg sys_sched_get_priority_max # branch to system call
.globl sys32_sched_get_priority_min_wrapper
sys32_sched_get_priority_min_wrapper:
lgfr %r2,%r2 # int
jg sys_sched_get_priority_min # branch to system call
.globl sys32_sched_rr_get_interval_wrapper
sys32_sched_rr_get_interval_wrapper:
lgfr %r2,%r2 # pid_t
llgtr %r3,%r3 # struct compat_timespec *
jg sys32_sched_rr_get_interval # branch to system call
.globl compat_sys_nanosleep_wrapper
compat_sys_nanosleep_wrapper:
llgtr %r2,%r2 # struct compat_timespec *
llgtr %r3,%r3 # struct compat_timespec *
jg compat_sys_nanosleep # branch to system call
.globl sys32_mremap_wrapper
sys32_mremap_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # unsigned long
llgfr %r4,%r4 # unsigned long
llgfr %r5,%r5 # unsigned long
llgfr %r6,%r6 # unsigned long
jg sys_mremap # branch to system call
.globl sys32_setresuid16_wrapper
sys32_setresuid16_wrapper:
llgfr %r2,%r2 # __kernel_old_uid_emu31_t
llgfr %r3,%r3 # __kernel_old_uid_emu31_t
llgfr %r4,%r4 # __kernel_old_uid_emu31_t
jg sys32_setresuid16 # branch to system call
.globl sys32_getresuid16_wrapper
sys32_getresuid16_wrapper:
llgtr %r2,%r2 # __kernel_old_uid_emu31_t *
llgtr %r3,%r3 # __kernel_old_uid_emu31_t *
llgtr %r4,%r4 # __kernel_old_uid_emu31_t *
jg sys32_getresuid16 # branch to system call
.globl sys32_poll_wrapper
sys32_poll_wrapper:
llgtr %r2,%r2 # struct pollfd *
llgfr %r3,%r3 # unsigned int
lgfr %r4,%r4 # long
jg sys_poll # branch to system call
.globl sys32_nfsservctl_wrapper
sys32_nfsservctl_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct nfsctl_arg_emu31 *
llgtr %r4,%r4 # union nfsctl_res_emu31 *
jg sys32_nfsservctl # branch to system call
.globl sys32_setresgid16_wrapper
sys32_setresgid16_wrapper:
llgfr %r2,%r2 # __kernel_old_gid_emu31_t
llgfr %r3,%r3 # __kernel_old_gid_emu31_t
llgfr %r4,%r4 # __kernel_old_gid_emu31_t
jg sys32_setresgid16 # branch to system call
.globl sys32_getresgid16_wrapper
sys32_getresgid16_wrapper:
llgtr %r2,%r2 # __kernel_old_gid_emu31_t *
llgtr %r3,%r3 # __kernel_old_gid_emu31_t *
llgtr %r4,%r4 # __kernel_old_gid_emu31_t *
jg sys32_getresgid16 # branch to system call
.globl sys32_prctl_wrapper
sys32_prctl_wrapper:
lgfr %r2,%r2 # int
llgfr %r3,%r3 # unsigned long
llgfr %r4,%r4 # unsigned long
llgfr %r5,%r5 # unsigned long
llgfr %r6,%r6 # unsigned long
jg sys_prctl # branch to system call
#sys32_rt_sigreturn_wrapper # done in rt_sigreturn_glue
.globl sys32_rt_sigaction_wrapper
sys32_rt_sigaction_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # const struct sigaction_emu31 *
llgtr %r4,%r4 # const struct sigaction_emu31 *
llgfr %r5,%r5 # size_t
jg sys32_rt_sigaction # branch to system call
.globl sys32_rt_sigprocmask_wrapper
sys32_rt_sigprocmask_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # old_sigset_emu31 *
llgtr %r4,%r4 # old_sigset_emu31 *
jg sys32_rt_sigprocmask # branch to system call
.globl sys32_rt_sigpending_wrapper
sys32_rt_sigpending_wrapper:
llgtr %r2,%r2 # sigset_emu31 *
llgfr %r3,%r3 # size_t
jg sys32_rt_sigpending # branch to system call
.globl sys32_rt_sigtimedwait_wrapper
sys32_rt_sigtimedwait_wrapper:
llgtr %r2,%r2 # const sigset_emu31_t *
llgtr %r3,%r3 # siginfo_emu31_t *
llgtr %r4,%r4 # const struct compat_timespec *
llgfr %r5,%r5 # size_t
jg sys32_rt_sigtimedwait # branch to system call
.globl sys32_rt_sigqueueinfo_wrapper
sys32_rt_sigqueueinfo_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
llgtr %r4,%r4 # siginfo_emu31_t *
jg sys32_rt_sigqueueinfo # branch to system call
#sys32_rt_sigsuspend_wrapper # done in rt_sigsuspend_glue
.globl sys32_pread64_wrapper
sys32_pread64_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # char *
llgfr %r4,%r4 # size_t
llgfr %r5,%r5 # u32
llgfr %r6,%r6 # u32
jg sys32_pread64 # branch to system call
.globl sys32_pwrite64_wrapper
sys32_pwrite64_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # const char *
llgfr %r4,%r4 # size_t
llgfr %r5,%r5 # u32
llgfr %r6,%r6 # u32
jg sys32_pwrite64 # branch to system call
.globl sys32_chown16_wrapper
sys32_chown16_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # __kernel_old_uid_emu31_t
llgfr %r4,%r4 # __kernel_old_gid_emu31_t
jg sys32_chown16 # branch to system call
.globl sys32_getcwd_wrapper
sys32_getcwd_wrapper:
llgtr %r2,%r2 # char *
llgfr %r3,%r3 # unsigned long
jg sys_getcwd # branch to system call
.globl sys32_capget_wrapper
sys32_capget_wrapper:
llgtr %r2,%r2 # cap_user_header_t
llgtr %r3,%r3 # cap_user_data_t
jg sys_capget # branch to system call
.globl sys32_capset_wrapper
sys32_capset_wrapper:
llgtr %r2,%r2 # cap_user_header_t
llgtr %r3,%r3 # const cap_user_data_t
jg sys_capset # branch to system call
.globl sys32_sigaltstack_wrapper
sys32_sigaltstack_wrapper:
llgtr %r2,%r2 # const stack_emu31_t *
llgtr %r3,%r3 # stack_emu31_t *
jg sys32_sigaltstack
.globl sys32_sendfile_wrapper
sys32_sendfile_wrapper:
lgfr %r2,%r2 # int
lgfr %r3,%r3 # int
llgtr %r4,%r4 # __kernel_off_emu31_t *
llgfr %r5,%r5 # size_t
jg sys32_sendfile # branch to system call
#sys32_vfork_wrapper # done in vfork_glue
.globl sys32_truncate64_wrapper
sys32_truncate64_wrapper:
llgtr %r2,%r2 # const char *
lgfr %r3,%r3 # s32
llgfr %r4,%r4 # u32
jg sys32_truncate64 # branch to system call
.globl sys32_ftruncate64_wrapper
sys32_ftruncate64_wrapper:
llgfr %r2,%r2 # unsigned int
lgfr %r3,%r3 # s32
llgfr %r4,%r4 # u32
jg sys32_ftruncate64 # branch to system call
.globl sys32_lchown_wrapper
sys32_lchown_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # uid_t
llgfr %r4,%r4 # gid_t
jg sys_lchown # branch to system call
#sys32_getuid_wrapper # void
#sys32_getgid_wrapper # void
#sys32_geteuid_wrapper # void
#sys32_getegid_wrapper # void
.globl sys32_setreuid_wrapper
sys32_setreuid_wrapper:
llgfr %r2,%r2 # uid_t
llgfr %r3,%r3 # uid_t
jg sys_setreuid # branch to system call
.globl sys32_setregid_wrapper
sys32_setregid_wrapper:
llgfr %r2,%r2 # gid_t
llgfr %r3,%r3 # gid_t
jg sys_setregid # branch to system call
.globl sys32_getgroups_wrapper
sys32_getgroups_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # gid_t *
jg sys_getgroups # branch to system call
.globl sys32_setgroups_wrapper
sys32_setgroups_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # gid_t *
jg sys_setgroups # branch to system call
.globl sys32_fchown_wrapper
sys32_fchown_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # uid_t
llgfr %r4,%r4 # gid_t
jg sys_fchown # branch to system call
.globl sys32_setresuid_wrapper
sys32_setresuid_wrapper:
llgfr %r2,%r2 # uid_t
llgfr %r3,%r3 # uid_t
llgfr %r4,%r4 # uid_t
jg sys_setresuid # branch to system call
.globl sys32_getresuid_wrapper
sys32_getresuid_wrapper:
llgtr %r2,%r2 # uid_t *
llgtr %r3,%r3 # uid_t *
llgtr %r4,%r4 # uid_t *
jg sys_getresuid # branch to system call
.globl sys32_setresgid_wrapper
sys32_setresgid_wrapper:
llgfr %r2,%r2 # gid_t
llgfr %r3,%r3 # gid_t
llgfr %r4,%r4 # gid_t
jg sys_setresgid # branch to system call
.globl sys32_getresgid_wrapper
sys32_getresgid_wrapper:
llgtr %r2,%r2 # gid_t *
llgtr %r3,%r3 # gid_t *
llgtr %r4,%r4 # gid_t *
jg sys_getresgid # branch to system call
.globl sys32_chown_wrapper
sys32_chown_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # uid_t
llgfr %r4,%r4 # gid_t
jg sys_chown # branch to system call
.globl sys32_setuid_wrapper
sys32_setuid_wrapper:
llgfr %r2,%r2 # uid_t
jg sys_setuid # branch to system call
.globl sys32_setgid_wrapper
sys32_setgid_wrapper:
llgfr %r2,%r2 # gid_t
jg sys_setgid # branch to system call
.globl sys32_setfsuid_wrapper
sys32_setfsuid_wrapper:
llgfr %r2,%r2 # uid_t
jg sys_setfsuid # branch to system call
.globl sys32_setfsgid_wrapper
sys32_setfsgid_wrapper:
llgfr %r2,%r2 # gid_t
jg sys_setfsgid # branch to system call
.globl sys32_pivot_root_wrapper
sys32_pivot_root_wrapper:
llgtr %r2,%r2 # const char *
llgtr %r3,%r3 # const char *
jg sys_pivot_root # branch to system call
.globl sys32_mincore_wrapper
sys32_mincore_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # size_t
llgtr %r4,%r4 # unsigned char *
jg sys_mincore # branch to system call
.globl sys32_madvise_wrapper
sys32_madvise_wrapper:
llgfr %r2,%r2 # unsigned long
llgfr %r3,%r3 # size_t
lgfr %r4,%r4 # int
jg sys_madvise # branch to system call
.globl sys32_getdents64_wrapper
sys32_getdents64_wrapper:
llgfr %r2,%r2 # unsigned int
llgtr %r3,%r3 # void *
llgfr %r4,%r4 # unsigned int
jg sys_getdents64 # branch to system call
.globl compat_sys_fcntl64_wrapper
compat_sys_fcntl64_wrapper:
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # unsigned int
llgfr %r4,%r4 # unsigned long
jg compat_sys_fcntl64 # branch to system call
.globl sys32_stat64_wrapper
sys32_stat64_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # struct stat64 *
llgfr %r4,%r4 # long
jg sys32_stat64 # branch to system call
.globl sys32_lstat64_wrapper
sys32_lstat64_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # struct stat64 *
llgfr %r4,%r4 # long
jg sys32_lstat64 # branch to system call
.globl sys32_stime_wrapper
sys32_stime_wrapper:
llgtr %r2,%r2 # int *
jg sys_stime # branch to system call
.globl sys32_sysctl_wrapper
sys32_sysctl_wrapper:
llgtr %r2,%r2 # struct __sysctl_args32 *
jg sys32_sysctl
.globl sys32_fstat64_wrapper
sys32_fstat64_wrapper:
llgfr %r2,%r2 # unsigned long
llgtr %r3,%r3 # struct stat64 *
llgfr %r4,%r4 # long
jg sys32_fstat64 # branch to system call
.globl compat_sys_futex_wrapper
compat_sys_futex_wrapper:
llgtr %r2,%r2 # u32 *
lgfr %r3,%r3 # int
lgfr %r4,%r4 # int
llgtr %r5,%r5 # struct compat_timespec *
jg compat_sys_futex # branch to system call
.globl sys32_setxattr_wrapper
sys32_setxattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # void *
llgfr %r5,%r5 # size_t
lgfr %r6,%r6 # int
jg sys_setxattr
.globl sys32_lsetxattr_wrapper
sys32_lsetxattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # void *
llgfr %r5,%r5 # size_t
lgfr %r6,%r6 # int
jg sys_lsetxattr
.globl sys32_fsetxattr_wrapper
sys32_fsetxattr_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # void *
llgfr %r5,%r5 # size_t
lgfr %r6,%r6 # int
jg sys_fsetxattr
.globl sys32_getxattr_wrapper
sys32_getxattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # void *
llgfr %r5,%r5 # size_t
jg sys_getxattr
.globl sys32_lgetxattr_wrapper
sys32_lgetxattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # void *
llgfr %r5,%r5 # size_t
jg sys_lgetxattr
.globl sys32_fgetxattr_wrapper
sys32_fgetxattr_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # char *
llgtr %r4,%r4 # void *
llgfr %r5,%r5 # size_t
jg sys_fgetxattr
.globl sys32_listxattr_wrapper
sys32_listxattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgfr %r4,%r4 # size_t
jg sys_listxattr
.globl sys32_llistxattr_wrapper
sys32_llistxattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
llgfr %r4,%r4 # size_t
jg sys_llistxattr
.globl sys32_flistxattr_wrapper
sys32_flistxattr_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # char *
llgfr %r4,%r4 # size_t
jg sys_flistxattr
.globl sys32_removexattr_wrapper
sys32_removexattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
jg sys_removexattr
.globl sys32_lremovexattr_wrapper
sys32_lremovexattr_wrapper:
llgtr %r2,%r2 # char *
llgtr %r3,%r3 # char *
jg sys_lremovexattr
.globl sys32_fremovexattr_wrapper
sys32_fremovexattr_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # char *
jg sys_fremovexattr
.globl sys32_sched_setaffinity_wrapper
sys32_sched_setaffinity_wrapper:
lgfr %r2,%r2 # int
llgfr %r3,%r3 # unsigned int
llgtr %r4,%r4 # unsigned long *
jg sys32_sched_setaffinity
.globl sys32_sched_getaffinity_wrapper
sys32_sched_getaffinity_wrapper:
lgfr %r2,%r2 # int
llgfr %r3,%r3 # unsigned int
llgtr %r4,%r4 # unsigned long *
jg sys32_sched_getaffinity
.globl sys32_exit_group_wrapper
sys32_exit_group_wrapper:
lgfr %r2,%r2 # int
jg sys_exit_group # branch to system call
.globl sys32_set_tid_address_wrapper
sys32_set_tid_address_wrapper:
llgtr %r2,%r2 # int *
jg sys_set_tid_address # branch to system call
arch/s390/kernel/cpcmd.c
View file @ b50819c2
......@@ -10,19 +10,26 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/ebcdic.h>
#include <linux/spinlock.h>
#include <asm/cpcmd.h>
#include <asm/system.h>
static spinlock_t cpcmd_lock = SPIN_LOCK_UNLOCKED;
static char cpcmd_buf[128];
void cpcmd(char *cmd, char *response, int rlen)
{
const int mask = 0x40000000L;
char obuffer[128];
int olen;
unsigned long flags;
int cmdlen;
olen = strlen(cmd);
strcpy(obuffer, cmd);
ASCEBC(obuffer,olen);
spin_lock_irqsave(&cpcmd_lock, flags);
cmdlen = strlen(cmd);
strcpy(cpcmd_buf, cmd);
ASCEBC(cpcmd_buf, cmdlen);
if (response != NULL && rlen > 0) {
#ifndef CONFIG_ARCH_S390X
asm volatile ("LRA 2,0(%0)\n\t"
"LR 4,%1\n\t"
"O 4,%4\n\t"
......@@ -30,17 +37,43 @@ void cpcmd(char *cmd, char *response, int rlen)
"LR 5,%3\n\t"
".long 0x83240008 # Diagnose 83\n\t"
: /* no output */
: "a" (obuffer), "d" (olen),
: "a" (cpcmd_buf), "d" (cmdlen),
"a" (response), "d" (rlen), "m" (mask)
: "2", "3", "4", "5" );
#else /* CONFIG_ARCH_S390X */
asm volatile (" lrag 2,0(%0)\n"
" lgr 4,%1\n"
" o 4,%4\n"
" lrag 3,0(%2)\n"
" lgr 5,%3\n"
" sam31\n"
" .long 0x83240008 # Diagnose 83\n"
" sam64"
: /* no output */
: "a" (cpcmd_buf), "d" (cmdlen),
"a" (response), "d" (rlen), "m" (mask)
: "2", "3", "4", "5" );
#endif /* CONFIG_ARCH_S390X */
EBCASC(response, rlen);
} else {
#ifndef CONFIG_ARCH_S390X
asm volatile ("LRA 2,0(%0)\n\t"
"LR 3,%1\n\t"
".long 0x83230008 # Diagnose 83\n\t"
: /* no output */
: "a" (obuffer), "d" (olen)
: "a" (cpcmd_buf), "d" (cmdlen)
: "2", "3" );
#else /* CONFIG_ARCH_S390X */
asm volatile (" lrag 2,0(%0)\n"
" lgr 3,%1\n"
" sam31\n"
" .long 0x83230008 # Diagnose 83\n"
" sam64"
: /* no output */
: "a" (cpcmd_buf), "d" (cmdlen)
: "2", "3" );
#endif /* CONFIG_ARCH_S390X */
}
spin_unlock_irqrestore(&cpcmd_lock, flags);
}
arch/s390/kernel/debug.c
View file @ b50819c2
......@@ -16,7 +16,6 @@
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/ctype.h>
#include <linux/version.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
......@@ -1111,17 +1110,10 @@ int debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
except_str = "*";
else
except_str = "-";
caller = (unsigned long) entry->caller;
#if defined(CONFIG_ARCH_S390X)
rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %016lx ",
caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN;
rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %p ",
area, time_val.tv_sec, time_val.tv_usec, level,
except_str, entry->id.fields.cpuid, caller);
#else
caller &= 0x7fffffff;
rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %08lx ",
area, time_val.tv_sec, time_val.tv_usec, level,
except_str, entry->id.fields.cpuid, caller);
#endif
except_str, entry->id.fields.cpuid, (void *) caller);
return rc;
}
......
arch/s390/kernel/entry.S
View file @ b50819c2
......@@ -364,271 +364,12 @@ sys_sigaltstack_glue:
l %r1,BASED(.Lsigaltstack)
br %r1 # branch to sys_sigreturn
#define SYSCALL(esa,esame,emu) .long esa
.globl sys_call_table
sys_call_table:
.long sys_ni_syscall /* 0 */
.long sys_exit
.long sys_fork_glue
.long sys_read
.long sys_write
.long sys_open /* 5 */
.long sys_close
.long sys_restart_syscall
.long sys_creat
.long sys_link
.long sys_unlink /* 10 */
.long sys_execve_glue
.long sys_chdir
.long sys_time
.long sys_mknod
.long sys_chmod /* 15 */
.long sys_lchown16
.long sys_ni_syscall /* old break syscall holder */
.long sys_ni_syscall /* old stat syscall holder */
.long sys_lseek
.long sys_getpid /* 20 */
.long sys_mount
.long sys_oldumount
.long sys_setuid16
.long sys_getuid16
.long sys_stime /* 25 */
.long sys_ptrace
.long sys_alarm
.long sys_ni_syscall /* old fstat syscall holder */
.long sys_pause
.long sys_utime /* 30 */
.long sys_ni_syscall /* old stty syscall holder */
.long sys_ni_syscall /* old gtty syscall holder */
.long sys_access
.long sys_nice
.long sys_ni_syscall /* 35 */ /* old ftime syscall holder */
.long sys_sync
.long sys_kill
.long sys_rename
.long sys_mkdir
.long sys_rmdir /* 40 */
.long sys_dup
.long sys_pipe
.long sys_times
.long sys_ni_syscall /* old prof syscall holder */
.long sys_brk /* 45 */
.long sys_setgid16
.long sys_getgid16
.long sys_signal
.long sys_geteuid16
.long sys_getegid16 /* 50 */
.long sys_acct
.long sys_umount
.long sys_ni_syscall /* old lock syscall holder */
.long sys_ioctl
.long sys_fcntl /* 55 */
.long sys_ni_syscall /* old mpx syscall holder */
.long sys_setpgid
.long sys_ni_syscall /* old ulimit syscall holder */
.long sys_ni_syscall /* old uname syscall holder */
.long sys_umask /* 60 */
.long sys_chroot
.long sys_ustat
.long sys_dup2
.long sys_getppid
.long sys_getpgrp /* 65 */
.long sys_setsid
.long sys_sigaction
.long sys_ni_syscall /* old sgetmask syscall holder */
.long sys_ni_syscall /* old ssetmask syscall holder */
.long sys_setreuid16 /* 70 */
.long sys_setregid16
.long sys_sigsuspend_glue
.long sys_sigpending
.long sys_sethostname
.long sys_setrlimit /* 75 */
.long sys_old_getrlimit
.long sys_getrusage
.long sys_gettimeofday
.long sys_settimeofday
.long sys_getgroups16 /* 80 */
.long sys_setgroups16
.long sys_ni_syscall /* old select syscall holder */
.long sys_symlink
.long sys_ni_syscall /* old lstat syscall holder */
.long sys_readlink /* 85 */
.long sys_uselib
.long sys_swapon
.long sys_reboot
.long sys_ni_syscall /* old readdir syscall holder */
.long old_mmap /* 90 */
.long sys_munmap
.long sys_truncate
.long sys_ftruncate
.long sys_fchmod
.long sys_fchown16 /* 95 */
.long sys_getpriority
.long sys_setpriority
.long sys_ni_syscall /* old profil syscall holder */
.long sys_statfs
.long sys_fstatfs /* 100 */
.long sys_ioperm
.long sys_socketcall
.long sys_syslog
.long sys_setitimer
.long sys_getitimer /* 105 */
.long sys_newstat
.long sys_newlstat
.long sys_newfstat
.long sys_ni_syscall /* old uname syscall holder */
.long sys_ni_syscall /* 110 */ /* iopl for i386 */
.long sys_vhangup
.long sys_ni_syscall /* old "idle" system call */
.long sys_ni_syscall /* vm86old for i386 */
.long sys_wait4
.long sys_swapoff /* 115 */
.long sys_sysinfo
.long sys_ipc
.long sys_fsync
.long sys_sigreturn_glue
.long sys_clone_glue /* 120 */
.long sys_setdomainname
.long sys_newuname
.long sys_ni_syscall /* modify_ldt for i386 */
.long sys_adjtimex
.long sys_mprotect /* 125 */
.long sys_sigprocmask
.long sys_ni_syscall /* old "create module" */
.long sys_init_module
.long sys_delete_module
.long sys_ni_syscall /* 130: old get_kernel_syms */
.long sys_quotactl
.long sys_getpgid
.long sys_fchdir
.long sys_bdflush
.long sys_sysfs /* 135 */
.long sys_personality
.long sys_ni_syscall /* for afs_syscall */
.long sys_setfsuid16
.long sys_setfsgid16
.long sys_llseek /* 140 */
.long sys_getdents
.long sys_select
.long sys_flock
.long sys_msync
.long sys_readv /* 145 */
.long sys_writev
.long sys_getsid
.long sys_fdatasync
.long sys_sysctl
.long sys_mlock /* 150 */
.long sys_munlock
.long sys_mlockall
.long sys_munlockall
.long sys_sched_setparam
.long sys_sched_getparam /* 155 */
.long sys_sched_setscheduler
.long sys_sched_getscheduler
.long sys_sched_yield
.long sys_sched_get_priority_max
.long sys_sched_get_priority_min /* 160 */
.long sys_sched_rr_get_interval
.long sys_nanosleep
.long sys_mremap
.long sys_setresuid16
.long sys_getresuid16 /* 165 */
.long sys_ni_syscall /* for vm86 */
.long sys_ni_syscall /* old sys_query_module */
.long sys_poll
.long sys_nfsservctl
.long sys_setresgid16 /* 170 */
.long sys_getresgid16
.long sys_prctl
.long sys_rt_sigreturn_glue
.long sys_rt_sigaction
.long sys_rt_sigprocmask /* 175 */
.long sys_rt_sigpending
.long sys_rt_sigtimedwait
.long sys_rt_sigqueueinfo
.long sys_rt_sigsuspend_glue
.long sys_pread64 /* 180 */
.long sys_pwrite64
.long sys_chown16
.long sys_getcwd
.long sys_capget
.long sys_capset /* 185 */
.long sys_sigaltstack_glue
.long sys_sendfile
.long sys_ni_syscall /* streams1 */
.long sys_ni_syscall /* streams2 */
.long sys_vfork_glue /* 190 */
.long sys_getrlimit
.long sys_mmap2
.long sys_truncate64
.long sys_ftruncate64
.long sys_stat64 /* 195 */
.long sys_lstat64
.long sys_fstat64
.long sys_lchown
.long sys_getuid
.long sys_getgid /* 200 */
.long sys_geteuid
.long sys_getegid
.long sys_setreuid
.long sys_setregid
.long sys_getgroups /* 205 */
.long sys_setgroups
.long sys_fchown
.long sys_setresuid
.long sys_getresuid
.long sys_setresgid /* 210 */
.long sys_getresgid
.long sys_chown
.long sys_setuid
.long sys_setgid
.long sys_setfsuid /* 215 */
.long sys_setfsgid
.long sys_pivot_root
.long sys_mincore
.long sys_madvise
.long sys_getdents64 /* 220 */
.long sys_fcntl64
.long sys_readahead
.long sys_sendfile64
.long sys_setxattr
.long sys_lsetxattr /* 225 */
.long sys_fsetxattr
.long sys_getxattr
.long sys_lgetxattr
.long sys_fgetxattr
.long sys_listxattr /* 230 */
.long sys_llistxattr
.long sys_flistxattr
.long sys_removexattr
.long sys_lremovexattr
.long sys_fremovexattr /* 235 */
.long sys_gettid
.long sys_tkill
.long sys_futex
.long sys_sched_setaffinity
.long sys_sched_getaffinity /* 240 */
.long sys_ni_syscall
.long sys_ni_syscall /* reserved for TUX */
.long sys_io_setup
.long sys_io_destroy
.long sys_io_getevents /* 245 */
.long sys_io_submit
.long sys_io_cancel
.long sys_exit_group
.long sys_epoll_create
.long sys_epoll_ctl /* 250 */
.long sys_epoll_wait
.long sys_set_tid_address
.long sys_fadvise64
.long sys_timer_create
.long sys_timer_settime /* 255 */
.long sys_timer_gettime
.long sys_timer_getoverrun
.long sys_timer_delete
.long sys_clock_settime
.long sys_clock_gettime
.long sys_clock_getres
.long sys_clock_nanosleep
#include "syscalls.S"
#undef SYSCALL
/*
* Program check handler routine
......
arch/s390/kernel/entry64.S 0 → 100644
View file @ b50819c2
/*
* arch/s390/kernel/entry.S
* S390 low-level entry points.
*
* S390 version
* Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
* Hartmut Penner (hp@de.ibm.com),
* Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
*/
#include <linux/sys.h>
#include <linux/linkage.h>
#include <linux/config.h>
#include <asm/cache.h>
#include <asm/lowcore.h>
#include <asm/errno.h>
#include <asm/ptrace.h>
#include <asm/thread_info.h>
#include <asm/offsets.h>
#include <asm/unistd.h>
/*
* Stack layout for the system_call stack entry.
* The first few entries are identical to the user_regs_struct.
*/
SP_PTREGS = STACK_FRAME_OVERHEAD
SP_PSW = STACK_FRAME_OVERHEAD + PT_PSWMASK
SP_R0 = STACK_FRAME_OVERHEAD + PT_GPR0
SP_R1 = STACK_FRAME_OVERHEAD + PT_GPR1
SP_R2 = STACK_FRAME_OVERHEAD + PT_GPR2
SP_R3 = STACK_FRAME_OVERHEAD + PT_GPR3
SP_R4 = STACK_FRAME_OVERHEAD + PT_GPR4
SP_R5 = STACK_FRAME_OVERHEAD + PT_GPR5
SP_R6 = STACK_FRAME_OVERHEAD + PT_GPR6
SP_R7 = STACK_FRAME_OVERHEAD + PT_GPR7
SP_R8 = STACK_FRAME_OVERHEAD + PT_GPR8
SP_R9 = STACK_FRAME_OVERHEAD + PT_GPR9
SP_R10 = STACK_FRAME_OVERHEAD + PT_GPR10
SP_R11 = STACK_FRAME_OVERHEAD + PT_GPR11
SP_R12 = STACK_FRAME_OVERHEAD + PT_GPR12
SP_R13 = STACK_FRAME_OVERHEAD + PT_GPR13
SP_R14 = STACK_FRAME_OVERHEAD + PT_GPR14
SP_R15 = STACK_FRAME_OVERHEAD + PT_GPR15
SP_AREGS = STACK_FRAME_OVERHEAD + PT_ACR0
SP_ORIG_R2 = STACK_FRAME_OVERHEAD + PT_ORIGGPR2
/* Now the additional entries */
SP_TRAP = (SP_ORIG_R2+GPR_SIZE)
SP_SIZE = (SP_TRAP+4)
_TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_RESTART_SVC)
_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED)
/*
* Register usage in interrupt handlers:
* R9 - pointer to current task structure
* R13 - pointer to literal pool
* R14 - return register for function calls
* R15 - kernel stack pointer
*/
.macro SAVE_ALL psworg,sync # system entry macro
stmg %r14,%r15,__LC_SAVE_AREA
stam %a2,%a4,__LC_SAVE_AREA+16
larl %r14,.Lconst
tm \psworg+1,0x01 # test problem state bit
.if \sync
jz 1f # skip stack setup save
.else
jnz 0f # from user -> load kernel stack
lg %r14,__LC_ASYNC_STACK # are we already on the async. stack ?
slgr %r14,%r15
srag %r14,%r14,14
larl %r14,.Lconst
jz 1f
lg %r15,__LC_ASYNC_STACK # load async. stack
j 1f
.endif
0: lg %r15,__LC_KERNEL_STACK # problem state -> load ksp
lam %a2,%a4,.Lc_ac-.Lconst(%r14)
1: aghi %r15,-SP_SIZE # make room for registers & psw
nill %r15,0xfff8 # align stack pointer to 8
stmg %r0,%r13,SP_R0(%r15) # store gprs 0-13 to kernel stack
stg %r2,SP_ORIG_R2(%r15) # store original content of gpr 2
mvc SP_R14(16,%r15),__LC_SAVE_AREA # move r14 and r15 to stack
stam %a0,%a15,SP_AREGS(%r15) # store access registers to kst.
mvc SP_AREGS+8(12,%r15),__LC_SAVE_AREA+16 # store ac. regs
mvc SP_PSW(16,%r15),\psworg # move user PSW to stack
mvc SP_TRAP(4,%r15),.L\psworg-.Lconst(%r14) # store trap ind.
xc 0(8,%r15),0(%r15) # clear back chain
.endm
.macro RESTORE_ALL sync # system exit macro
mvc __LC_RETURN_PSW(16),SP_PSW(%r15) # move user PSW to lowcore
lam %a0,%a15,SP_AREGS(%r15) # load the access registers
lmg %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
lpswe __LC_RETURN_PSW # back to caller
.endm
.macro GET_THREAD_INFO
lg %r9,__LC_KERNEL_STACK # load pointer to task_struct to %r9
aghi %r9,-16384
.endm
/*
* Scheduler resume function, called by switch_to
* gpr2 = (task_struct *) prev
* gpr3 = (task_struct *) next
* Returns:
* gpr2 = prev
*/
.globl resume
resume:
tm __THREAD_per+4(%r3),0xe8 # is the new process using per ?
jz resume_noper # if not we're fine
stctg %c9,%c11,48(%r15) # We are using per stuff
clc __THREAD_per(24,%r3),48(%r15)
je resume_noper # we got away without bashing TLB's
lctlg %c9,%c11,__THREAD_per(%r3) # Nope we didn't
resume_noper:
stmg %r6,%r15,48(%r15) # store resume registers of prev task
stg %r15,__THREAD_ksp(%r2) # store kernel stack to prev->tss.ksp
lg %r15,__THREAD_ksp(%r3) # load kernel stack from next->tss.ksp
stam %a2,%a2,__THREAD_ar2(%r2) # store kernel access reg. 2
stam %a4,%a4,__THREAD_ar4(%r2) # store kernel access reg. 4
lam %a2,%a2,__THREAD_ar2(%r3) # load kernel access reg. 2
lam %a4,%a4,__THREAD_ar4(%r3) # load kernel access reg. 4
lmg %r6,%r15,48(%r15) # load resume registers of next task
lg %r3,__THREAD_info(%r3) # load thread_info from task struct
aghi %r3,16384
stg %r3,__LC_KERNEL_STACK # __LC_KERNEL_STACK = new kernel stack
br %r14
/*
* do_softirq calling function. We want to run the softirq functions on the
* asynchronous interrupt stack.
*/
.global do_call_softirq
do_call_softirq:
stmg %r12,%r15,48(%r15)
lgr %r12,%r15
lg %r0,__LC_ASYNC_STACK
slgr %r0,%r15
srag %r0,%r0,14
je 0f
lg %r15,__LC_ASYNC_STACK
0: aghi %r15,-STACK_FRAME_OVERHEAD
stg %r12,0(%r15) # store back chain
brasl %r14,do_softirq
lmg %r12,%r15,48(%r12)
br %r14
/*
* SVC interrupt handler routine. System calls are synchronous events and
* are executed with interrupts enabled.
*/
.globl system_call
system_call:
SAVE_ALL __LC_SVC_OLD_PSW,1
llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore
stosm 48(%r15),0x03 # reenable interrupts
GET_THREAD_INFO # load pointer to task_struct to R9
slag %r7,%r7,2 # *4 and test for svc 0
jnz sysc_do_restart
# svc 0: system call number in %r1
clg %r1,.Lnr_syscalls-.Lconst(%r14)
jnl sysc_do_restart
slag %r7,%r1,2 # svc 0: system call number in %r1
sysc_do_restart:
larl %r10,sys_call_table
#ifdef CONFIG_S390_SUPPORT
tm SP_PSW+3(%r15),0x01 # are we running in 31 bit mode ?
jo sysc_noemu
larl %r10,sys_call_table_emu # use 31 bit emulation system calls
sysc_noemu:
#endif
tm __TI_flags+7(%r9),_TIF_SYSCALL_TRACE
lgf %r8,0(%r7,%r10) # load address of system call routine
jo sysc_tracesys
basr %r14,%r8 # call sys_xxxx
stg %r2,SP_R2(%r15) # store return value (change R2 on stack)
# ATTENTION: check sys_execve_glue before
# changing anything here !!
sysc_return:
stnsm 48(%r15),0xfc # disable I/O and ext. interrupts
tm __TI_flags+7(%r9),_TIF_WORK_SVC
jnz sysc_work # there is work to do (signals etc.)
sysc_leave:
RESTORE_ALL 1
#
# recheck if there is more work to do
#
sysc_work_loop:
stnsm 48(%r15),0xfc # disable I/O and ext. interrupts
GET_THREAD_INFO # load pointer to task_struct to R9
tm __TI_flags+7(%r9),_TIF_WORK_SVC
jz sysc_leave # there is no work to do
#
# One of the work bits is on. Find out which one.
# Checked are: _TIF_SIGPENDING and _TIF_NEED_RESCHED
#
sysc_work:
tm __TI_flags+7(%r9),_TIF_NEED_RESCHED
jo sysc_reschedule
tm __TI_flags+7(%r9),_TIF_SIGPENDING
jo sysc_sigpending
tm __TI_flags+7(%r9),_TIF_RESTART_SVC
jo sysc_restart
j sysc_leave
#
# _TIF_NEED_RESCHED is set, call schedule
#
sysc_reschedule:
stosm 48(%r15),0x03 # reenable interrupts
larl %r14,sysc_work_loop
jg schedule # return point is sysc_return
#
# _TIF_SIGPENDING is set, call do_signal
#
sysc_sigpending:
stosm 48(%r15),0x03 # reenable interrupts
la %r2,SP_PTREGS(%r15) # load pt_regs
sgr %r3,%r3 # clear *oldset
brasl %r14,do_signal # call do_signal
stnsm 48(%r15),0xfc # disable I/O and ext. interrupts
j sysc_leave # out of here, do NOT recheck
#
# _TIF_RESTART_SVC is set, set up registers and restart svc
#
sysc_restart:
ni __TI_flags+3(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
stosm 48(%r15),0x03 # reenable interrupts
lg %r7,SP_R2(%r15) # load new svc number
slag %r7,%r7,3 # *8
mvc SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument
lmg %r2,%r6,SP_R2(%r15) # load svc arguments
j sysc_do_restart # restart svc
#
# call syscall_trace before and after system call
# special linkage: %r12 contains the return address for trace_svc
#
sysc_tracesys:
srl %r7,3
stg %r7,SP_R2(%r15)
brasl %r14,syscall_trace
larl %r1,.Lnr_syscalls
clc SP_R2(8,%r15),0(%r1)
jl sysc_tracego
lg %r7,SP_R2(%r15) # strace might have changed the
sll %r7,3 # system call
lgf %r8,0(%r7,%r10)
sysc_tracego:
lmg %r3,%r6,SP_R3(%r15)
lg %r2,SP_ORIG_R2(%r15)
basr %r14,%r8 # call sys_xxx
stg %r2,SP_R2(%r15) # store return value
tm __TI_flags+7(%r9),_TIF_SYSCALL_TRACE
jno sysc_return
larl %r14,sysc_return # return point is sysc_return
jg syscall_trace
#
# a new process exits the kernel with ret_from_fork
#
.globl ret_from_fork
ret_from_fork:
GET_THREAD_INFO # load pointer to task_struct to R9
larl %r14,sysc_return
jg schedule_tail # return to sysc_return
#
# clone, fork, vfork, exec and sigreturn need glue,
# because they all expect pt_regs as parameter,
# but are called with different parameter.
# return-address is set up above
#
sys_clone_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs
jg sys_clone # branch to sys_clone
#ifdef CONFIG_S390_SUPPORT
sys32_clone_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs
jg sys32_clone # branch to sys32_clone
#endif
sys_fork_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs
jg sys_fork # branch to sys_fork
sys_vfork_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs
jg sys_vfork # branch to sys_vfork
sys_execve_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs
lgr %r12,%r14 # save return address
brasl %r14,sys_execve # call sys_execve
ltgr %r2,%r2 # check if execve failed
bnz 0(%r12) # it did fail -> store result in gpr2
b 6(%r12) # SKIP STG 2,SP_R2(15) in
# system_call/sysc_tracesys
#ifdef CONFIG_S390_SUPPORT
sys32_execve_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs
lgr %r12,%r14 # save return address
brasl %r14,sys32_execve # call sys32_execve
ltgr %r2,%r2 # check if execve failed
bnz 0(%r12) # it did fail -> store result in gpr2
b 6(%r12) # SKIP STG 2,SP_R2(15) in
# system_call/sysc_tracesys
#endif
sys_sigreturn_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
jg sys_sigreturn # branch to sys_sigreturn
#ifdef CONFIG_S390_SUPPORT
sys32_sigreturn_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
jg sys32_sigreturn # branch to sys32_sigreturn
#endif
sys_rt_sigreturn_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
jg sys_rt_sigreturn # branch to sys_sigreturn
#ifdef CONFIG_S390_SUPPORT
sys32_rt_sigreturn_glue:
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
jg sys32_rt_sigreturn # branch to sys32_sigreturn
#endif
#
# sigsuspend and rt_sigsuspend need pt_regs as an additional
# parameter and they have to skip the store of %r2 into the
# user register %r2 because the return value was set in
# sigsuspend and rt_sigsuspend already and must not be overwritten!
#
sys_sigsuspend_glue:
lgr %r5,%r4 # move mask back
lgr %r4,%r3 # move history1 parameter
lgr %r3,%r2 # move history0 parameter
la %r2,SP_PTREGS(%r15) # load pt_regs as first parameter
la %r14,6(%r14) # skip store of return value
jg sys_sigsuspend # branch to sys_sigsuspend
#ifdef CONFIG_S390_SUPPORT
sys32_sigsuspend_glue:
llgfr %r4,%r4 # unsigned long
lgr %r5,%r4 # move mask back
lgfr %r3,%r3 # int
lgr %r4,%r3 # move history1 parameter
lgfr %r2,%r2 # int
lgr %r3,%r2 # move history0 parameter
la %r2,SP_PTREGS(%r15) # load pt_regs as first parameter
la %r14,6(%r14) # skip store of return value
jg sys32_sigsuspend # branch to sys32_sigsuspend
#endif
sys_rt_sigsuspend_glue:
lgr %r4,%r3 # move sigsetsize parameter
lgr %r3,%r2 # move unewset parameter
la %r2,SP_PTREGS(%r15) # load pt_regs as first parameter
la %r14,6(%r14) # skip store of return value
jg sys_rt_sigsuspend # branch to sys_rt_sigsuspend
#ifdef CONFIG_S390_SUPPORT
sys32_rt_sigsuspend_glue:
llgfr %r3,%r3 # size_t
lgr %r4,%r3 # move sigsetsize parameter
llgtr %r2,%r2 # sigset_emu31_t *
lgr %r3,%r2 # move unewset parameter
la %r2,SP_PTREGS(%r15) # load pt_regs as first parameter
la %r14,6(%r14) # skip store of return value
jg sys32_rt_sigsuspend # branch to sys32_rt_sigsuspend
#endif
sys_sigaltstack_glue:
la %r4,SP_PTREGS(%r15) # load pt_regs as parameter
jg sys_sigaltstack # branch to sys_sigreturn
#ifdef CONFIG_S390_SUPPORT
sys32_sigaltstack_glue:
la %r4,SP_PTREGS(%r15) # load pt_regs as parameter
jg sys32_sigaltstack_wrapper # branch to sys_sigreturn
#endif
#define SYSCALL(esa,esame,emu) .long esame
.globl sys_call_table
sys_call_table:
#include "syscalls.S"
#undef SYSCALL
#ifdef CONFIG_S390_SUPPORT
#define SYSCALL(esa,esame,emu) .long emu
.globl sys_call_table_emu
sys_call_table_emu:
#include "syscalls.S"
#undef SYSCALL
#endif
/*
* Program check handler routine
*/
.globl pgm_check_handler
pgm_check_handler:
/*
* First we need to check for a special case:
* Single stepping an instruction that disables the PER event mask will
* cause a PER event AFTER the mask has been set. Example: SVC or LPSW.
* For a single stepped SVC the program check handler gets control after
* the SVC new PSW has been loaded. But we want to execute the SVC first and
* then handle the PER event. Therefore we update the SVC old PSW to point
* to the pgm_check_handler and branch to the SVC handler after we checked
* if we have to load the kernel stack register.
* For every other possible cause for PER event without the PER mask set
* we just ignore the PER event (FIXME: is there anything we have to do
* for LPSW?).
*/
tm __LC_PGM_INT_CODE+1,0x80 # check whether we got a per exception
jnz pgm_per # got per exception -> special case
SAVE_ALL __LC_PGM_OLD_PSW,1
lgf %r3,__LC_PGM_ILC # load program interruption code
lghi %r8,0x7f
ngr %r8,%r3
sll %r8,3
GET_THREAD_INFO
larl %r1,pgm_check_table
lg %r1,0(%r8,%r1) # load address of handler routine
la %r2,SP_PTREGS(%r15) # address of register-save area
larl %r14,sysc_return
br %r1 # branch to interrupt-handler
#
# handle per exception
#
pgm_per:
tm __LC_PGM_OLD_PSW,0x40 # test if per event recording is on
jnz pgm_per_std # ok, normal per event from user space
# ok its one of the special cases, now we need to find out which one
clc __LC_PGM_OLD_PSW(16),__LC_SVC_NEW_PSW
je pgm_svcper
# no interesting special case, ignore PER event
lpswe __LC_PGM_OLD_PSW
#
# Normal per exception
#
pgm_per_std:
SAVE_ALL __LC_PGM_OLD_PSW,1
GET_THREAD_INFO
lghi %r4,0x7f
lgf %r3,__LC_PGM_ILC # load program interruption code
nr %r4,%r3 # clear per-event-bit and ilc
je pgm_per_only # only per of per+check ?
sll %r4,3
larl %r1,pgm_check_table
lg %r1,0(%r4,%r1) # load address of handler routine
la %r2,SP_PTREGS(%r15) # address of register-save area
basr %r14,%r1 # branch to interrupt-handler
pgm_per_only:
la %r2,SP_PTREGS(15) # address of register-save area
larl %r14,sysc_return # load adr. of system return
jg handle_per_exception
#
# it was a single stepped SVC that is causing all the trouble
#
pgm_svcper:
SAVE_ALL __LC_SVC_OLD_PSW,1
llgh %r8,__LC_SVC_INT_CODE # get svc number from lowcore
stosm 48(%r15),0x03 # reenable interrupts
GET_THREAD_INFO # load pointer to task_struct to R9
slag %r7,%r7,2 # *4 and test for svc 0
jnz pgm_svcstd
# svc 0: system call number in %r1
clg %r1,.Lnr_syscalls-.Lconst(%r14)
slag %r7,%r1,2
pgm_svcstd:
larl %r7,sys_call_table
#ifdef CONFIG_S390_SUPPORT
tm SP_PSW+3(%r15),0x01 # are we running in 31 bit mode ?
jo pgm_svcper_noemu
larl %r7,sys_call_table_emu # use 31 bit emulation system calls
pgm_svcper_noemu:
#endif
tm __TI_flags+3(%r9),_TIF_SYSCALL_TRACE
lgf %r8,0(%r8,%r7) # load address of system call routine
jo pgm_tracesys
basr %r14,%r8 # call sys_xxxx
stg %r2,SP_R2(%r15) # store return value (change R2 on stack)
# ATTENTION: check sys_execve_glue before
# changing anything here !!
pgm_svcret:
tm __TI_flags+3(%r9),_TIF_SIGPENDING
jo pgm_svcper_nosig
la %r2,SP_PTREGS(%r15) # load pt_regs
sgr %r3,%r3 # clear *oldset
brasl %r14,do_signal
pgm_svcper_nosig:
lhi %r0,__LC_PGM_OLD_PSW # set trap indication back to pgm_chk
st %r0,SP_TRAP(%r15)
la %r2,SP_PTREGS(15) # address of register-save area
larl %r14,sysc_return # load adr. of system return
jg handle_per_exception
#
# call trace before and after sys_call
#
pgm_tracesys:
lgfr %r7,%r7
stg %r7,SP_R2(%r15)
brasl %r14,syscall_trace
clc SP_R2(8,%r15),.Lnr_syscalls
jnl pgm_svc_go
lg %r2,SP_R2(%r15)
sllg %r2,%r2,3 # strace wants to change the syscall
lgf %r8,0(%r2,%r7)
pgm_svc_go:
lmg %r3,%r6,SP_R3(%r15)
lg %r2,SP_ORIG_R2(%r15)
basr %r14,%r8 # call sys_xxx
stg %r2,SP_R2(%r15) # store return value
tm __TI_flags+7(%r9),_TIF_SYSCALL_TRACE
jno pgm_svcret
larl %r14,pgm_svcret # return point is sysc_return
jg syscall_trace
/*
* IO interrupt handler routine
*/
.globl io_int_handler
io_int_handler:
SAVE_ALL __LC_IO_OLD_PSW,0
GET_THREAD_INFO # load pointer to task_struct to R9
la %r2,SP_PTREGS(%r15) # address of register-save area
llgh %r3,__LC_SUBCHANNEL_NR # load subchannel number
llgf %r4,__LC_IO_INT_PARM # load interruption parm
llgf %r5,__LC_IO_INT_WORD # load interruption word
brasl %r14,do_IRQ # call standard irq handler
io_return:
tm SP_PSW+1(%r15),0x01 # returning to user ?
#ifdef CONFIG_PREEMPT
jno io_preempt # no -> check for preemptive scheduling
#else
jno io_leave # no-> skip resched & signal
#endif
tm __TI_flags+7(%r9),_TIF_WORK_INT
jnz io_work # there is work to do (signals etc.)
io_leave:
RESTORE_ALL 0
#ifdef CONFIG_PREEMPT
io_preempt:
icm %r0,15,__TI_precount(%r9)
jnz io_leave
io_resume_loop:
tm __TI_flags+7(%r9),_TIF_NEED_RESCHED
jno io_leave
larl %r1,.Lc_pactive
mvc __TI_precount(4,%r9),0(%r1)
# hmpf, we are on the async. stack but to call schedule
# we have to move the interrupt frame to the process stack
lg %r1,SP_R15(%r15)
aghi %r1,-SP_SIZE
nill %r1,0xfff8
mvc SP_PTREGS(SP_SIZE-SP_PTREGS,%r1),SP_PTREGS(%r15)
xc 0(8,%r1),0(%r1) # clear back chain
lgr %r15,%r1
stosm 48(%r15),0x03 # reenable interrupts
brasl %r14,schedule # call schedule
stnsm 48(%r15),0xfc # disable I/O and ext. interrupts
GET_THREAD_INFO # load pointer to task_struct to R9
xc __TI_precount(4,%r9),__TI_precount(%r9)
j io_resume_loop
#endif
#
# recheck if there is more work to do
#
io_work_loop:
stnsm 48(%r15),0xfc # disable I/O and ext. interrupts
GET_THREAD_INFO # load pointer to task_struct to R9
tm __TI_flags+7(%r9),_TIF_WORK_INT
jz io_leave # there is no work to do
#
# One of the work bits is on. Find out which one.
# Checked are: _TIF_SIGPENDING and _TIF_NEED_RESCHED
#
io_work:
tm __TI_flags+7(%r9),_TIF_NEED_RESCHED
jo io_reschedule
tm __TI_flags+7(%r9),_TIF_SIGPENDING
jo io_sigpending
j io_leave
#
# _TIF_NEED_RESCHED is set, call schedule
#
io_reschedule:
stosm 48(%r15),0x03 # reenable interrupts
larl %r14,io_work_loop
jg schedule # call scheduler
#
# _TIF_SIGPENDING is set, call do_signal
#
io_sigpending:
stosm 48(%r15),0x03 # reenable interrupts
la %r2,SP_PTREGS(%r15) # load pt_regs
slgr %r3,%r3 # clear *oldset
brasl %r14,do_signal # call do_signal
stnsm 48(%r15),0xfc # disable I/O and ext. interrupts
j sysc_leave # out of here, do NOT recheck
/*
* External interrupt handler routine
*/
.globl ext_int_handler
ext_int_handler:
SAVE_ALL __LC_EXT_OLD_PSW,0
GET_THREAD_INFO # load pointer to task_struct to R9
llgh %r6,__LC_EXT_INT_CODE # get interruption code
lgr %r1,%r6 # calculate index = code & 0xff
nill %r1,0xff
sll %r1,3
larl %r7,ext_int_hash
lg %r7,0(%r1,%r7) # get first list entry for hash value
ltgr %r7,%r7 # == NULL ?
jz io_return # yes, nothing to do, exit
ext_int_loop:
ch %r6,16(%r7) # compare external interrupt code
jne ext_int_next
lg %r1,8(%r7) # get handler address
la %r2,SP_PTREGS(%r15) # address of register-save area
lgr %r3,%r6 # interruption code
basr %r14,%r1 # call handler
ext_int_next:
lg %r7,0(%r7) # next list entry
ltgr %r7,%r7
jnz ext_int_loop
j io_return
/*
* Machine check handler routines
*/
.globl mcck_int_handler
mcck_int_handler:
SAVE_ALL __LC_MCK_OLD_PSW,0
brasl %r14,s390_do_machine_check
mcck_return:
RESTORE_ALL 0
#ifdef CONFIG_SMP
/*
* Restart interruption handler, kick starter for additional CPUs
*/
.globl restart_int_handler
restart_int_handler:
lg %r15,__LC_SAVE_AREA+120 # load ksp
lghi %r10,__LC_CREGS_SAVE_AREA
lctlg %c0,%c15,0(%r10) # get new ctl regs
lghi %r10,__LC_AREGS_SAVE_AREA
lam %a0,%a15,0(%r10)
stosm 0(%r15),0x04 # now we can turn dat on
lmg %r6,%r15,48(%r15) # load registers from clone
jg start_secondary
#else
/*
* If we do not run with SMP enabled, let the new CPU crash ...
*/
.globl restart_int_handler
restart_int_handler:
basr %r1,0
restart_base:
lpswe restart_crash-restart_base(%r1)
.align 8
restart_crash:
.long 0x000a0000,0x00000000,0x00000000,0x00000000
restart_go:
#endif
/*
* Integer constants
*/
.align 4
.Lconst:
.Lc_ac: .long 0,0,1
.Lc_pactive: .long PREEMPT_ACTIVE
.L0x0130: .long 0x0130
.L0x0140: .long 0x0140
.L0x0150: .long 0x0150
.L0x0160: .long 0x0160
.L0x0170: .long 0x0170
.Lnr_syscalls: .long NR_syscalls
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