1 files changed, 55 insertions, 30 deletions

diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index b0ed0b487ff2..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)
 
@@ -816,8 +825,8 @@ ENDPROC(_resume)
 
 ENTRY(_ret_from_exception)
 #ifdef CONFIG_IPIPE
-        p2.l = _per_cpu__ipipe_percpu_domain;
-        p2.h = _per_cpu__ipipe_percpu_domain;
+        p2.l = _ipipe_percpu_domain;
+        p2.h = _ipipe_percpu_domain;
         r0.l = _ipipe_root;
         r0.h = _ipipe_root;
         r2 = [p2];
@@ -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