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Diffstat (limited to 'arch/blackfin/mach-common/entry.S')
-rw-r--r--arch/blackfin/mach-common/entry.S81
1 files changed, 53 insertions, 28 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 01b2f58dfb95..a5847f5d67c7 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -405,7 +405,7 @@ ENTRY(_double_fault)
r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
SP += -12;
- call _double_fault_c;
+ pseudo_long_call _double_fault_c, p5;
SP += 12;
.L_double_fault_panic:
JUMP .L_double_fault_panic
@@ -447,7 +447,7 @@ ENTRY(_exception_to_level5)
r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
SP += -12;
- call _trap_c;
+ pseudo_long_call _trap_c, p4;
SP += 12;
/* If interrupts were off during the exception (IPEND[4] = 1), turn them off
@@ -482,6 +482,8 @@ ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/
[--sp] = ASTAT;
[--sp] = (R7:6,P5:4);
+ ANOMALY_283_315_WORKAROUND(p5, r7)
+
#ifdef CONFIG_EXACT_HWERR
/* Make sure all pending read/writes complete. This will ensure any
* accesses which could cause hardware errors completes, and signal
@@ -492,8 +494,6 @@ ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/
ssync;
#endif
- ANOMALY_283_315_WORKAROUND(p5, r7)
-
#ifdef CONFIG_DEBUG_DOUBLEFAULT
/*
* Save these registers, as they are only valid in exception context
@@ -551,7 +551,7 @@ ENTRY(_kernel_execve)
p0 = sp;
sp += -16;
[sp + 12] = p0;
- call _do_execve;
+ pseudo_long_call _do_execve, p5;
SP += 16;
cc = r0 == 0;
if ! cc jump .Lexecve_failed;
@@ -626,13 +626,6 @@ ENTRY(_system_call)
p0 = [sp + PT_ORIG_P0];
#endif /* CONFIG_IPIPE */
- /* Check the System Call */
- r7 = __NR_syscall;
- /* System call number is passed in P0 */
- r6 = p0;
- cc = r6 < r7;
- if ! cc jump .Lbadsys;
-
/* are we tracing syscalls?*/
r7 = sp;
r6.l = lo(ALIGN_PAGE_MASK);
@@ -642,6 +635,14 @@ ENTRY(_system_call)
r7 = [p2+TI_FLAGS];
CC = BITTST(r7,TIF_SYSCALL_TRACE);
if CC JUMP _sys_trace;
+ CC = BITTST(r7,TIF_SINGLESTEP);
+ if CC JUMP _sys_trace;
+
+ /* Make sure the system call # is valid */
+ p4 = __NR_syscall;
+ /* System call number is passed in P0 */
+ cc = p4 <= p0;
+ if cc jump .Lbadsys;
/* Execute the appropriate system call */
@@ -704,7 +705,7 @@ ENTRY(_system_call)
sp += 4;
SP += -12;
- call _schedule;
+ pseudo_long_call _schedule, p4;
SP += 12;
jump .Lresume_userspace_1;
@@ -723,7 +724,7 @@ ENTRY(_system_call)
r0 = sp;
SP += -12;
- call _do_notify_resume;
+ pseudo_long_call _do_notify_resume, p5;
SP += 12;
.Lsyscall_really_exit:
@@ -736,11 +737,17 @@ ENDPROC(_system_call)
* this symbol need not be global anyways, so ...
*/
_sys_trace:
- call _syscall_trace;
-
- /* Execute the appropriate system call */
+ r0 = sp;
+ pseudo_long_call _syscall_trace_enter, p5;
+ /* Make sure the system call # is valid */
p4 = [SP + PT_P0];
+ p3 = __NR_syscall;
+ cc = p3 <= p4;
+ r0 = -ENOSYS;
+ if cc jump .Lsys_trace_badsys;
+
+ /* Execute the appropriate system call */
p5.l = _sys_call_table;
p5.h = _sys_call_table;
p5 = p5 + (p4 << 2);
@@ -758,9 +765,11 @@ _sys_trace:
SP += -12;
call (p5);
SP += 24;
+.Lsys_trace_badsys:
[sp + PT_R0] = r0;
- call _syscall_trace;
+ r0 = sp;
+ pseudo_long_call _syscall_trace_leave, p5;
jump .Lresume_userspace;
ENDPROC(_sys_trace)
@@ -966,6 +975,13 @@ ENTRY(_evt_evt14)
#else
cli r0;
#endif
+#ifdef CONFIG_TRACE_IRQFLAGS
+ [--sp] = rets;
+ sp += -12;
+ call _trace_hardirqs_off;
+ sp += 12;
+ rets = [sp++];
+#endif
[--sp] = RETI;
SP += 4;
rts;
@@ -989,6 +1005,14 @@ ENTRY(_schedule_and_signal_from_int)
p1 = rets;
[sp + PT_RESERVED] = p1;
+#ifdef CONFIG_TRACE_IRQFLAGS
+ /* trace_hardirqs_on() checks if all irqs are disabled. But here IRQ 15
+ * is turned on, so disable all irqs. */
+ cli r0;
+ sp += -12;
+ call _trace_hardirqs_on;
+ sp += 12;
+#endif
#ifdef CONFIG_SMP
GET_PDA(p0, r0); /* Fetch current PDA (can't migrate to other CPU here) */
r0 = [p0 + PDA_IRQFLAGS];
@@ -1007,7 +1031,8 @@ ENTRY(_schedule_and_signal_from_int)
r0 = sp;
sp += -12;
- call _finish_atomic_sections;
+
+ pseudo_long_call _finish_atomic_sections, p5;
sp += 12;
jump.s .Lresume_userspace;
ENDPROC(_schedule_and_signal_from_int)
@@ -1357,7 +1382,7 @@ ENTRY(_sys_call_table)
.long _sys_newuname
.long _sys_ni_syscall /* old sys_modify_ldt */
.long _sys_adjtimex
- .long _sys_ni_syscall /* 125 */ /* sys_mprotect */
+ .long _sys_mprotect /* 125 */
.long _sys_ni_syscall /* old sys_sigprocmask */
.long _sys_ni_syscall /* old "creat_module" */
.long _sys_init_module
@@ -1376,16 +1401,16 @@ ENTRY(_sys_call_table)
.long _sys_getdents
.long _sys_ni_syscall /* sys_select */
.long _sys_flock
- .long _sys_ni_syscall /* sys_msync */
+ .long _sys_msync
.long _sys_readv /* 145 */
.long _sys_writev
.long _sys_getsid
.long _sys_fdatasync
.long _sys_sysctl
- .long _sys_ni_syscall /* 150 */ /* sys_mlock */
- .long _sys_ni_syscall /* sys_munlock */
- .long _sys_ni_syscall /* sys_mlockall */
- .long _sys_ni_syscall /* sys_munlockall */
+ .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
@@ -1450,8 +1475,8 @@ ENTRY(_sys_call_table)
.long _sys_setfsuid /* 215 */
.long _sys_setfsgid
.long _sys_pivot_root
- .long _sys_ni_syscall /* sys_mincore */
- .long _sys_ni_syscall /* sys_madvise */
+ .long _sys_mincore
+ .long _sys_madvise
.long _sys_getdents64 /* 220 */
.long _sys_fcntl64
.long _sys_ni_syscall /* reserved for TUX */
@@ -1507,7 +1532,7 @@ ENTRY(_sys_call_table)
.long _sys_utimes
.long _sys_fadvise64_64
.long _sys_ni_syscall /* vserver */
- .long _sys_ni_syscall /* 275, mbind */
+ .long _sys_mbind /* 275 */
.long _sys_ni_syscall /* get_mempolicy */
.long _sys_ni_syscall /* set_mempolicy */
.long _sys_mq_open