diff options
Diffstat (limited to 'arch/parisc/kernel/syscall.S')
| -rw-r--r-- | arch/parisc/kernel/syscall.S | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 3f24a0af1e04..c396853184d8 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -139,9 +139,9 @@ linux_gateway_entry: xor %r1,%r30,%r30 /* ye olde xor trick */ xor %r1,%r30,%r1 xor %r1,%r30,%r30 - - ldo THREAD_SZ_ALGN+FRAME_SIZE(%r30),%r30 /* set up kernel stack */ + LDREG TASK_STACK(%r30),%r30 /* set up kernel stack */ + ldo FRAME_SIZE(%r30),%r30 /* N.B.: It is critical that we don't set sr7 to 0 until r30 * contains a valid kernel stack pointer. It is also * critical that we don't start using the kernel stack @@ -152,7 +152,6 @@ linux_gateway_entry: ssm PSW_SM_I, %r0 /* enable interrupts */ STREGM %r1,FRAME_SIZE(%r30) /* save r1 (usp) here for now */ mfctl %cr30,%r1 /* get task ptr in %r1 */ - LDREG TI_TASK(%r1),%r1 /* Save some registers for sigcontext and potential task switch (see entry.S for the details of which ones are @@ -207,7 +206,7 @@ linux_gateway_entry: /* Are we being ptraced? */ mfctl %cr30, %r1 - LDREG TI_FLAGS(%r1),%r1 + LDREG TASK_TI_FLAGS(%r1),%r1 ldi _TIF_SYSCALL_TRACE_MASK, %r19 and,COND(=) %r1, %r19, %r0 b,n .Ltracesys @@ -272,8 +271,7 @@ tracesys: * C bit set, a non-straced syscall entry results in C and D clear * in the saved PSW. */ - ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ - LDREG TI_TASK(%r1), %r1 + mfctl %cr30,%r1 /* get task ptr */ ssm 0,%r2 STREG %r2,TASK_PT_PSW(%r1) /* Lower 8 bits only!! */ mfsp %sr0,%r2 @@ -327,8 +325,7 @@ tracesys_next: */ copy %ret0,%r20 - ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ - LDREG TI_TASK(%r1), %r1 + mfctl %cr30,%r1 /* get task ptr */ LDREG TASK_PT_GR28(%r1), %r28 /* Restore return value */ LDREG TASK_PT_GR26(%r1), %r26 /* Restore the users args */ LDREG TASK_PT_GR25(%r1), %r25 @@ -385,16 +382,14 @@ tracesys_next: makes a direct call to syscall_trace. */ tracesys_exit: - ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ - LDREG TI_TASK(%r1), %r1 + mfctl %cr30,%r1 /* get task ptr */ #ifdef CONFIG_64BIT ldo -16(%r30),%r29 /* Reference param save area */ #endif ldo TASK_REGS(%r1),%r26 BL do_syscall_trace_exit,%r2 STREG %r28,TASK_PT_GR28(%r1) /* save return value now */ - ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ - LDREG TI_TASK(%r1), %r1 + mfctl %cr30,%r1 /* get task ptr */ LDREG TASK_PT_GR28(%r1), %r28 /* Restore return val. */ ldil L%syscall_exit,%r1 @@ -407,8 +402,7 @@ tracesys_exit: ldo R%tracesys_sigexit(%r2),%r2 tracesys_sigexit: - ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ - LDREG TI_TASK(%r1), %r1 + mfctl %cr30,%r1 /* get task ptr */ #ifdef CONFIG_64BIT ldo -16(%r30),%r29 /* Reference param save area */ #endif |