diff options
Diffstat (limited to 'arch/blackfin/mach-common/entry.S')
| -rw-r--r-- | arch/blackfin/mach-common/entry.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 8eb0a902348..40045b1386a 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -103,6 +103,7 @@ ENTRY(_ex_dcplb) if !cc jump _return_from_exception; /* fall through */ #endif +ENDPROC(_ex_dcplb) ENTRY(_ex_icplb) (R7:6,P5:4) = [sp++]; @@ -113,6 +114,7 @@ ENTRY(_ex_icplb) RESTORE_ALL_SYS SP = RETN; rtx; +ENDPROC(_ex_icplb) ENTRY(_ex_spinlock) /* Transform this into a syscall - twiddle the syscall vector. */ @@ -123,6 +125,7 @@ ENTRY(_ex_spinlock) [p5] = r7; csync; /* Fall through. */ +ENDPROC(_ex_spinlock) ENTRY(_ex_syscall) DEBUG_START_HWTRACE @@ -131,6 +134,7 @@ ENTRY(_ex_syscall) raise 15; /* invoked by TRAP #0, for sys call */ sp = retn; rtx +ENDPROC(_ex_syscall) ENTRY(_spinlock_bh) SAVE_ALL_SYS @@ -150,12 +154,14 @@ ENTRY(_spinlock_bh) [SP + PT_R0] = R0; RESTORE_ALL_SYS rti; +ENDPROC(_spinlock_bh) ENTRY(_ex_soft_bp) r7 = retx; r7 += -2; retx = r7; jump.s _ex_trap_c; +ENDPROC(_ex_soft_bp) ENTRY(_ex_single_step) r7 = retx; @@ -181,10 +187,17 @@ ENTRY(_ex_single_step) _return_from_exception: DEBUG_START_HWTRACE +#ifdef ANOMALY_05000257 + R7=LC0; + LC0=R7; + R7=LC1; + LC1=R7; +#endif (R7:6,P5:4) = [sp++]; ASTAT = [sp++]; sp = retn; rtx; +ENDPROC(_ex_soft_bp) ENTRY(_handle_bad_cplb) /* To get here, we just tried and failed to change a CPLB @@ -244,6 +257,7 @@ ENTRY(_ex_trap_c) SP = RETN; raise 5; rtx; +ENDPROC(_ex_trap_c) ENTRY(_exception_to_level5) SAVE_ALL_SYS @@ -308,6 +322,7 @@ ENTRY(_exception_to_level5) call _ret_from_exception; RESTORE_ALL_SYS rti; +ENDPROC(_exception_to_level5) ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/ /* Since the kernel stack can be anywhere, it's not guaranteed to be @@ -336,6 +351,7 @@ ENTRY(_trap) /* Exception: 4th entry into system event table(supervisor mode)*/ r7 = -ENOSYS; /* signextending enough */ [sp + PT_R0] = r7; /* return value from system call */ jump .Lsyscall_really_exit; +ENDPROC(_trap) ENTRY(_kernel_execve) link SIZEOF_PTREGS; @@ -390,6 +406,7 @@ ENTRY(_kernel_execve) 1: unlink; rts; +ENDPROC(_kernel_execve) ENTRY(_system_call) /* Store IPEND */ @@ -497,6 +514,7 @@ ENTRY(_system_call) r5 = [sp + PT_RESERVED]; rets = r5; rts; +ENDPROC(_system_call) _sys_trace: call _syscall_trace; @@ -525,6 +543,7 @@ _sys_trace: call _syscall_trace; jump .Lresume_userspace; +ENDPROC(_sys_trace) ENTRY(_resume) /* @@ -574,6 +593,7 @@ _new_old_task: * in "new" task. */ rts; +ENDPROC(_resume) ENTRY(_ret_from_exception) p2.l = lo(IPEND); @@ -632,6 +652,7 @@ ENTRY(_ret_from_exception) syscfg = r0; 5: rts; +ENDPROC(_ret_from_exception) ENTRY(_return_from_int) /* If someone else already raised IRQ 15, do nothing. */ @@ -674,6 +695,7 @@ ENTRY(_return_from_int) rti; 2: rts; +ENDPROC(_return_from_int) ENTRY(_lower_to_irq14) #if defined(ANOMALY_05000281) @@ -706,6 +728,11 @@ _schedule_and_signal_from_int: p1.h = _evt_system_call; [p0] = p1; csync; + + /* Set orig_p0 to -1 to indicate this isn't the end of a syscall. */ + r0 = -1 (x); + [sp + PT_ORIG_P0] = r0; + p1 = rets; [sp + PT_RESERVED] = p1; @@ -734,6 +761,7 @@ _schedule_and_signal: 1: RESTORE_CONTEXT rti; +ENDPROC(_lower_to_irq14) /* Make sure when we start, that the circular buffer is initialized properly * R0 and P0 are call clobbered, so we can use them here. @@ -747,6 +775,7 @@ ENTRY(_init_exception_buff) p0.l = _out_ptr_excause; [p0] = r0; rts; +ENDPROC(_init_exception_buff) /* * Put these in the kernel data section - that should always be covered by |