Commit aa33c8cb authored by Martin Schwidefsky's avatar Martin Schwidefsky

[S390] cleanup trap handling

Move the program interruption code and the translation exception identifier
to the pt_regs structure as 'int_code' and 'int_parm_long' and make the
first level interrupt handler in entry[64].S store the two values. That
makes it possible to drop 'prot_addr' and 'trap_no' from the thread_struct
and to reduce the number of arguments to a lot of functions. Finally
un-inline do_trap. Overall this saves 5812 bytes in the .text section of
the 64 bit kernel.
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 679e2ea7
......@@ -22,6 +22,6 @@ enum die_val {
DIE_NMI_IPI,
};
extern void die(const char *, struct pt_regs *, long);
extern void die(struct pt_regs *, const char *);
#endif
......@@ -80,8 +80,6 @@ struct thread_struct {
unsigned int acrs[NUM_ACRS];
unsigned long ksp; /* kernel stack pointer */
mm_segment_t mm_segment;
unsigned long prot_addr; /* address of protection-excep. */
unsigned int trap_no;
unsigned long gmap_addr; /* address of last gmap fault. */
struct per_regs per_user; /* User specified PER registers */
struct per_event per_event; /* Cause of the last PER trap */
......
......@@ -324,7 +324,8 @@ struct pt_regs
psw_t psw;
unsigned long gprs[NUM_GPRS];
unsigned long orig_gpr2;
unsigned int svc_code;
unsigned int int_code;
unsigned long int_parm_long;
};
/*
......
......@@ -27,7 +27,7 @@ static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return test_tsk_thread_flag(task, TIF_SYSCALL) ?
(regs->svc_code & 0xffff) : -1;
(regs->int_code & 0xffff) : -1;
}
static inline void syscall_rollback(struct task_struct *task,
......
......@@ -45,7 +45,8 @@ int main(void)
DEFINE(__PT_PSW, offsetof(struct pt_regs, psw));
DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs));
DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2));
DEFINE(__PT_SVC_CODE, offsetof(struct pt_regs, svc_code));
DEFINE(__PT_INT_CODE, offsetof(struct pt_regs, int_code));
DEFINE(__PT_INT_PARM_LONG, offsetof(struct pt_regs, int_parm_long));
DEFINE(__PT_SIZE, sizeof(struct pt_regs));
BLANK();
DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain));
......
......@@ -501,8 +501,12 @@ static int setup_frame32(int sig, struct k_sigaction *ka,
/* 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;
if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
sig == SIGTRAP || sig == SIGFPE) {
/* set extra registers only for synchronous signals */
regs->gprs[4] = regs->int_code & 127;
regs->gprs[5] = regs->int_parm_long;
}
/* Place signal number on stack to allow backtrace from handler. */
if (__put_user(regs->gprs[2], (int __force __user *) &frame->signo))
......
......@@ -184,16 +184,16 @@ sysc_vtime:
stm %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
mvc __PT_PSW(8,%r11),__LC_SVC_OLD_PSW
mvc __PT_SVC_CODE(4,%r11),__LC_SVC_ILC
mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
sysc_do_svc:
oi __TI_flags+3(%r12),_TIF_SYSCALL
lh %r8,__PT_SVC_CODE+2(%r11)
lh %r8,__PT_INT_CODE+2(%r11)
sla %r8,2 # shift and test for svc0
jnz sysc_nr_ok
# svc 0: system call number in %r1
cl %r1,BASED(.Lnr_syscalls)
jnl sysc_nr_ok
sth %r1,__PT_SVC_CODE+2(%r11)
sth %r1,__PT_INT_CODE+2(%r11)
lr %r8,%r1
sla %r8,2
sysc_nr_ok:
......@@ -266,9 +266,9 @@ sysc_sigpending:
jno sysc_return
lm %r2,%r7,__PT_R2(%r11) # load svc arguments
xr %r8,%r8 # svc 0 returns -ENOSYS
clc __PT_SVC_CODE+2(2,%r11),BASED(.Lnr_syscalls+2)
clc __PT_INT_CODE+2(2,%r11),BASED(.Lnr_syscalls+2)
jnl sysc_nr_ok # invalid svc number -> do svc 0
lh %r8,__PT_SVC_CODE+2(%r11) # load new svc number
lh %r8,__PT_INT_CODE+2(%r11) # load new svc number
sla %r8,2
j sysc_nr_ok # restart svc
......@@ -300,7 +300,7 @@ sysc_tracesys:
lr %r2,%r11 # pass pointer to pt_regs
la %r3,0
xr %r0,%r0
icm %r0,3,__PT_SVC_CODE+2(%r11)
icm %r0,3,__PT_INT_CODE+2(%r11)
st %r0,__PT_R2(%r11)
basr %r14,%r1 # call do_syscall_trace_enter
cl %r2,BASED(.Lnr_syscalls)
......@@ -396,6 +396,8 @@ ENTRY(pgm_check_handler)
stm %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
stm %r8,%r9,__PT_PSW(%r11)
mvc __PT_INT_CODE(4,%r11),__LC_PGM_ILC
mvc __PT_INT_PARM_LONG(4,%r11),__LC_TRANS_EXC_CODE
tm __LC_PGM_ILC+3,0x80 # check for per exception
jz 0f
l %r1,__TI_task(%r12)
......@@ -405,13 +407,11 @@ ENTRY(pgm_check_handler)
mvc __THREAD_per_address(4,%r1),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r1),__LC_PER_CAUSE
mvc __THREAD_per_paid(1,%r1),__LC_PER_PAID
0: l %r3,__LC_PGM_ILC # load program interruption code
l %r4,__LC_TRANS_EXC_CODE
REENABLE_IRQS
0: REENABLE_IRQS
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
l %r1,BASED(.Ljump_table)
la %r10,0x7f
nr %r10,%r3
n %r10,__PT_INT_CODE(%r11)
je sysc_return
sll %r10,2
l %r1,0(%r10,%r1) # load address of handler routine
......@@ -858,7 +858,7 @@ cleanup_system_call:
mvc __PT_R8(32,%r15),__LC_SAVE_AREA_SYNC
stm %r0,%r7,__PT_R0(%r15)
mvc __PT_PSW(8,%r15),__LC_SVC_OLD_PSW
mvc __PT_SVC_CODE(4,%r15),__LC_SVC_ILC
mvc __PT_INT_CODE(4,%r15),__LC_SVC_ILC
# setup saved register 15
ahi %r15,-STACK_FRAME_OVERHEAD
st %r15,28(%r11) # r15 stack pointer
......
......@@ -6,15 +6,15 @@
#include <asm/ptrace.h>
extern void (*pgm_check_table[128])(struct pt_regs *, long, unsigned long);
extern void (*pgm_check_table[128])(struct pt_regs *);
extern void *restart_stack;
asmlinkage long do_syscall_trace_enter(struct pt_regs *regs);
asmlinkage void do_syscall_trace_exit(struct pt_regs *regs);
void do_protection_exception(struct pt_regs *, long, unsigned long);
void do_dat_exception(struct pt_regs *, long, unsigned long);
void do_asce_exception(struct pt_regs *, long, unsigned long);
void do_protection_exception(struct pt_regs *regs);
void do_dat_exception(struct pt_regs *regs);
void do_asce_exception(struct pt_regs *regs);
void do_per_trap(struct pt_regs *regs);
void syscall_trace(struct pt_regs *regs, int entryexit);
......@@ -28,7 +28,7 @@ void do_extint(struct pt_regs *regs, unsigned int, unsigned int, unsigned long);
void do_restart(void);
int __cpuinit start_secondary(void *cpuvoid);
void __init startup_init(void);
void die(const char * str, struct pt_regs * regs, long err);
void die(struct pt_regs *regs, const char *str);
void __init time_init(void);
......
/*
* arch/s390/kernel/entry64.S
* S390 low-level entry points.
......@@ -200,17 +199,17 @@ sysc_vtime:
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
mvc __PT_PSW(16,%r11),__LC_SVC_OLD_PSW
mvc __PT_SVC_CODE(4,%r11),__LC_SVC_ILC
mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
sysc_do_svc:
oi __TI_flags+7(%r12),_TIF_SYSCALL
llgh %r8,__PT_SVC_CODE+2(%r11)
llgh %r8,__PT_INT_CODE+2(%r11)
slag %r8,%r8,2 # shift and test for svc 0
jnz sysc_nr_ok
# svc 0: system call number in %r1
llgfr %r1,%r1 # clear high word in r1
cghi %r1,NR_syscalls
jnl sysc_nr_ok
sth %r1,__PT_SVC_CODE+2(%r11)
sth %r1,__PT_INT_CODE+2(%r11)
slag %r8,%r1,2
sysc_nr_ok:
larl %r10,sys_call_table # 64 bit system call table
......@@ -288,7 +287,7 @@ sysc_sigpending:
jno sysc_return
lmg %r2,%r7,__PT_R2(%r11) # load svc arguments
lghi %r8,0 # svc 0 returns -ENOSYS
lh %r1,__PT_SVC_CODE+2(%r11) # load new svc number
lh %r1,__PT_INT_CODE+2(%r11) # load new svc number
cghi %r1,NR_syscalls
jnl sysc_nr_ok # invalid svc number -> do svc 0
slag %r8,%r1,2
......@@ -318,7 +317,7 @@ sysc_singlestep:
sysc_tracesys:
lgr %r2,%r11 # pass pointer to pt_regs
la %r3,0
llgh %r0,__PT_SVC_CODE+2(%r11)
llgh %r0,__PT_INT_CODE+2(%r11)
stg %r0,__PT_R2(%r11)
brasl %r14,do_syscall_trace_enter
lghi %r0,NR_syscalls
......@@ -411,6 +410,8 @@ ENTRY(pgm_check_handler)
stmg %r0,%r7,__PT_R0(%r11)
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
stmg %r8,%r9,__PT_PSW(%r11)
mvc __PT_INT_CODE(4,%r11),__LC_PGM_ILC
mvc __PT_INT_PARM_LONG(8,%r11),__LC_TRANS_EXC_CODE
stg %r10,__PT_ARGS(%r11)
tm __LC_PGM_ILC+3,0x80 # check for per exception
jz 0f
......@@ -421,15 +422,13 @@ ENTRY(pgm_check_handler)
mvc __THREAD_per_address(8,%r1),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r1),__LC_PER_CAUSE
mvc __THREAD_per_paid(1,%r1),__LC_PER_PAID
0: lgf %r3,__LC_PGM_ILC # load program interruption code
lg %r4,__LC_TRANS_EXC_CODE
REENABLE_IRQS
0: REENABLE_IRQS
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
lghi %r10,0x7f
ngr %r10,%r3
je sysc_return
sll %r10,3
larl %r1,pgm_check_table
llgh %r10,__PT_INT_CODE+2(%r11)
nill %r10,0x007f
sll %r10,3
je sysc_return
lg %r1,0(%r10,%r1) # load address of handler routine
lgr %r2,%r11 # pass pointer to pt_regs
basr %r14,%r1 # branch to interrupt-handler
......@@ -877,7 +876,7 @@ cleanup_system_call:
mvc __PT_R8(64,%r15),__LC_SAVE_AREA_SYNC
stmg %r0,%r7,__PT_R0(%r15)
mvc __PT_PSW(16,%r15),__LC_SVC_OLD_PSW
mvc __PT_SVC_CODE(4,%r15),__LC_SVC_ILC
mvc __PT_INT_CODE(4,%r15),__LC_SVC_ILC
# setup saved register r15
aghi %r15,-STACK_FRAME_OVERHEAD
stg %r15,56(%r11) # r15 stack pointer
......
......@@ -302,9 +302,13 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* 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;
regs->gprs[6] = task_thread_info(current)->last_break;
if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
sig == SIGTRAP || sig == SIGFPE) {
/* set extra registers only for synchronous signals */
regs->gprs[4] = regs->int_code & 127;
regs->gprs[5] = regs->int_parm_long;
regs->gprs[6] = task_thread_info(current)->last_break;
}
/* Place signal number on stack to allow backtrace from handler. */
if (__put_user(regs->gprs[2], (int __user *) &frame->signo))
......@@ -434,13 +438,13 @@ void do_signal(struct pt_regs *regs)
* call information.
*/
current_thread_info()->system_call =
test_thread_flag(TIF_SYSCALL) ? regs->svc_code : 0;
test_thread_flag(TIF_SYSCALL) ? regs->int_code : 0;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
/* Whee! Actually deliver the signal. */
if (current_thread_info()->system_call) {
regs->svc_code = current_thread_info()->system_call;
regs->int_code = current_thread_info()->system_call;
/* Check for system call restarting. */
switch (regs->gprs[2]) {
case -ERESTART_RESTARTBLOCK:
......@@ -457,7 +461,7 @@ void do_signal(struct pt_regs *regs)
regs->gprs[2] = regs->orig_gpr2;
regs->psw.addr =
__rewind_psw(regs->psw,
regs->svc_code >> 16);
regs->int_code >> 16);
break;
}
}
......@@ -488,11 +492,11 @@ void do_signal(struct pt_regs *regs)
/* No handlers present - check for system call restart */
clear_thread_flag(TIF_SYSCALL);
if (current_thread_info()->system_call) {
regs->svc_code = current_thread_info()->system_call;
regs->int_code = current_thread_info()->system_call;
switch (regs->gprs[2]) {
case -ERESTART_RESTARTBLOCK:
/* Restart with sys_restart_syscall */
regs->svc_code = __NR_restart_syscall;
regs->int_code = __NR_restart_syscall;
/* fallthrough */
case -ERESTARTNOHAND:
case -ERESTARTSYS:
......
......@@ -43,7 +43,7 @@
#include <asm/debug.h>
#include "entry.h"
void (*pgm_check_table[128])(struct pt_regs *, long, unsigned long);
void (*pgm_check_table[128])(struct pt_regs *regs);
int show_unhandled_signals;
......@@ -234,7 +234,7 @@ void show_regs(struct pt_regs *regs)
static DEFINE_SPINLOCK(die_lock);
void die(const char * str, struct pt_regs * regs, long err)
void die(struct pt_regs *regs, const char *str)
{
static int die_counter;
......@@ -243,7 +243,7 @@ void die(const char * str, struct pt_regs * regs, long err)
console_verbose();
spin_lock_irq(&die_lock);
bust_spinlocks(1);
printk("%s: %04lx [#%d] ", str, err & 0xffff, ++die_counter);
printk("%s: %04x [#%d] ", str, regs->int_code & 0xffff, ++die_counter);
#ifdef CONFIG_PREEMPT
printk("PREEMPT ");
#endif
......@@ -254,7 +254,7 @@ void die(const char * str, struct pt_regs * regs, long err)
printk("DEBUG_PAGEALLOC");
#endif
printk("\n");
notify_die(DIE_OOPS, str, regs, err, current->thread.trap_no, SIGSEGV);
notify_die(DIE_OOPS, str, regs, 0, regs->int_code & 0xffff, SIGSEGV);
show_regs(regs);
bust_spinlocks(0);
add_taint(TAINT_DIE);
......@@ -267,8 +267,7 @@ void die(const char * str, struct pt_regs * regs, long err)
do_exit(SIGSEGV);
}
static void inline report_user_fault(struct pt_regs *regs, long int_code,
int signr)
static inline void report_user_fault(struct pt_regs *regs, int signr)
{
if ((task_pid_nr(current) > 1) && !show_unhandled_signals)
return;
......@@ -276,7 +275,7 @@ static void inline report_user_fault(struct pt_regs *regs, long int_code,
return;
if (!printk_ratelimit())
return;
printk("User process fault: interruption code 0x%lX ", int_code);
printk("User process fault: interruption code 0x%X ", regs->int_code);
print_vma_addr("in ", regs->psw.addr & PSW_ADDR_INSN);
printk("\n");
show_regs(regs);
......@@ -287,19 +286,28 @@ int is_valid_bugaddr(unsigned long addr)
return 1;
}
static inline void __kprobes do_trap(long pgm_int_code, int signr, char *str,
struct pt_regs *regs, siginfo_t *info)
static inline void __user *get_psw_address(struct pt_regs *regs)
{
if (notify_die(DIE_TRAP, str, regs, pgm_int_code,
pgm_int_code, signr) == NOTIFY_STOP)
return (void __user *)
((regs->psw.addr - (regs->int_code >> 16)) & PSW_ADDR_INSN);
}
static void __kprobes do_trap(struct pt_regs *regs,
int si_signo, int si_code, char *str)
{
siginfo_t info;
if (notify_die(DIE_TRAP, str, regs, 0,
regs->int_code, si_signo) == NOTIFY_STOP)
return;
if (regs->psw.mask & PSW_MASK_PSTATE) {
struct task_struct *tsk = current;
tsk->thread.trap_no = pgm_int_code & 0xffff;
force_sig_info(signr, info, tsk);
report_user_fault(regs, pgm_int_code, signr);
info.si_signo = si_signo;
info.si_errno = 0;
info.si_code = si_code;
info.si_addr = get_psw_address(regs);
force_sig_info(si_signo, &info, current);
report_user_fault(regs, si_signo);
} else {
const struct exception_table_entry *fixup;
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
......@@ -311,18 +319,11 @@ static inline void __kprobes do_trap(long pgm_int_code, int signr, char *str,
btt = report_bug(regs->psw.addr & PSW_ADDR_INSN, regs);
if (btt == BUG_TRAP_TYPE_WARN)
return;
die(str, regs, pgm_int_code);
die(regs, str);
}
}
}
static inline void __user *get_psw_address(struct pt_regs *regs,
long pgm_int_code)
{
return (void __user *)
((regs->psw.addr - (pgm_int_code >> 16)) & PSW_ADDR_INSN);
}
void __kprobes do_per_trap(struct pt_regs *regs)
{
siginfo_t info;
......@@ -339,26 +340,19 @@ void __kprobes do_per_trap(struct pt_regs *regs)
force_sig_info(SIGTRAP, &info, current);
}
static void default_trap_handler(struct pt_regs *regs, long pgm_int_code,
unsigned long trans_exc_code)
static void default_trap_handler(struct pt_regs *regs)
{
if (regs->psw.mask & PSW_MASK_PSTATE) {
report_user_fault(regs, pgm_int_code, SIGSEGV);
report_user_fault(regs, SIGSEGV);
do_exit(SIGSEGV);
} else
die("Unknown program exception", regs, pgm_int_code);
die(regs, "Unknown program exception");
}
#define DO_ERROR_INFO(name, signr, sicode, str) \
static void name(struct pt_regs *regs, long pgm_int_code, \
unsigned long trans_exc_code) \
static void name(struct pt_regs *regs) \
{ \
siginfo_t info; \
info.si_signo = signr; \
info.si_errno = 0; \
info.si_code = sicode; \
info.si_addr = get_psw_address(regs, pgm_int_code); \
do_trap(pgm_int_code, signr, str, regs, &info); \
do_trap(regs, signr, sicode, str); \
}
DO_ERROR_INFO(addressing_exception, SIGILL, ILL_ILLADR,
......@@ -388,42 +382,34 @@ DO_ERROR_INFO(special_op_exception, SIGILL, ILL_ILLOPN,
DO_ERROR_INFO(translation_exception, SIGILL, ILL_ILLOPN,
"translation exception")
static inline void do_fp_trap(struct pt_regs *regs, void __user *location,
int fpc, long pgm_int_code)
static inline void do_fp_trap(struct pt_regs *regs, int fpc)
{
siginfo_t si;
si.si_signo = SIGFPE;
si.si_errno = 0;
si.si_addr = location;
si.si_code = 0;
int si_code = 0;
/* FPC[2] is Data Exception Code */
if ((fpc & 0x00000300) == 0) {
/* bits 6 and 7 of DXC are 0 iff IEEE exception */
if (fpc & 0x8000) /* invalid fp operation */
si.si_code = FPE_FLTINV;
si_code = FPE_FLTINV;
else if (fpc & 0x4000) /* div by 0 */
si.si_code = FPE_FLTDIV;
si_code = FPE_FLTDIV;
else if (fpc & 0x2000) /* overflow */
si.si_code = FPE_FLTOVF;
si_code = FPE_FLTOVF;
else if (fpc & 0x1000) /* underflow */
si.si_code = FPE_FLTUND;
si_code = FPE_FLTUND;
else if (fpc & 0x0800) /* inexact */
si.si_code = FPE_FLTRES;
si_code = FPE_FLTRES;
}
do_trap(pgm_int_code, SIGFPE,
"floating point exception", regs, &si);
do_trap(regs, SIGFPE, si_code, "floating point exception");
}
static void __kprobes illegal_op(struct pt_regs *regs, long pgm_int_code,
unsigned long trans_exc_code)
static void __kprobes illegal_op(struct pt_regs *regs)
{
siginfo_t info;
__u8 opcode[6];
__u16 __user *location;
int signal = 0;
location = get_psw_address(regs, pgm_int_code);
location = get_psw_address(regs);
if (regs->psw.mask & PSW_MASK_PSTATE) {
if (get_user(*((__u16 *) opcode), (__u16 __user *) location))
......@@ -467,44 +453,31 @@ static void __kprobes illegal_op(struct pt_regs *regs, long pgm_int_code,
* If we get an illegal op in kernel mode, send it through the
* kprobes notifier. If kprobes doesn't pick it up, SIGILL
*/
if (notify_die(DIE_BPT, "bpt", regs, pgm_int_code,
if (notify_die(DIE_BPT, "bpt", regs, 0,
3, SIGTRAP) != NOTIFY_STOP)
signal = SIGILL;
}
#ifdef CONFIG_MATHEMU
if (signal == SIGFPE)
do_fp_trap(regs, location,
current->thread.fp_regs.fpc, pgm_int_code);
else if (signal == SIGSEGV) {
info.si_signo = signal;
info.si_errno = 0;
info.si_code = SEGV_MAPERR;
info.si_addr = (void __user *) location;
do_trap(pgm_int_code, signal,
"user address fault", regs, &info);
} else
do_fp_trap(regs, current->thread.fp_regs.fpc);
else if (signal == SIGSEGV)
do_trap(regs, signal, SEGV_MAPERR, "user address fault");
else
#endif
if (signal) {
info.si_signo = signal;
info.si_errno = 0;
info.si_code = ILL_ILLOPC;
info.si_addr = (void __user *) location;
do_trap(pgm_int_code, signal,
"illegal operation", regs, &info);
}
if (signal)
do_trap(regs, signal, ILL_ILLOPC, "illegal operation");
}
#ifdef CONFIG_MATHEMU
void specification_exception(struct pt_regs *regs, long pgm_int_code,
unsigned long trans_exc_code)
void specification_exception(struct pt_regs *regs)
{
__u8 opcode[6];
__u16 __user *location = NULL;
int signal = 0;
location = (__u16 __user *) get_psw_address(regs, pgm_int_code);
location = (__u16 __user *) get_psw_address(regs);
if (regs->psw.mask & PSW_MASK_PSTATE) {
get_user(*((__u16 *) opcode), location);
......@@ -539,30 +512,21 @@ void specification_exception(struct pt_regs *regs, long pgm_int_code,
signal = SIGILL;
if (signal == SIGFPE)
do_fp_trap(regs, location,
current->thread.fp_regs.fpc, pgm_int_code);
else if (signal) {
siginfo_t info;
info.si_signo = signal;
info.si_errno = 0;
info.si_code = ILL_ILLOPN;
info.si_addr = location;
do_trap(pgm_int_code, signal,
"specification exception", regs, &info);
}
do_fp_trap(regs, current->thread.fp_regs.fpc);
else if (signal)
do_trap(regs, signal, ILL_ILLOPN, "specification exception");
}
#else
DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN,
"specification exception");
#endif
static void data_exception(struct pt_regs *regs, long pgm_int_code,
unsigned long trans_exc_code)
static void data_exception(struct pt_regs *regs)
{
__u16 __user *location;
int signal = 0;
location = get_psw_address(regs, pgm_int_code);
location = get_psw_address(regs);
if (MACHINE_HAS_IEEE)
asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
......@@ -627,32 +591,18 @@ static void data_exception(struct pt_regs *regs, long pgm_int_code,
else
signal = SIGILL;
if (signal == SIGFPE)
do_fp_trap(regs, location,
current->thread.fp_regs.fpc, pgm_int_code);
else if (signal) {
siginfo_t info;
info.si_signo = signal;
info.si_errno = 0;
info.si_code = ILL_ILLOPN;
info.si_addr = location;
do_trap(pgm_int_code, signal, "data exception", regs, &info);
}
do_fp_trap(regs, current->thread.fp_regs.fpc);
else if (signal)
do_trap(regs, signal, ILL_ILLOPN, "data exception");
}
static void space_switch_exception(struct pt_regs *regs, long pgm_int_code,
unsigned long trans_exc_code)
static void space_switch_exception(struct pt_regs *regs)