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parisc: hpux - Remove hpux gateway page

PATCH New Helge Deller 1 participant 1 message Feb 16, 2015 PA-RISC architecture

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Helge Deller

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PATCH 1/1 parisc: hpux - Remove hpux gateway page

Drop code to create HP-UX gateway page and syscall entry code.

Signed-off-by Helge Deller <[email protected]>
arch/parisc/include/asm/processor.h +0 -2
index 689a8ad..54adb60 100644
@@ -330,8 +330,6 @@ struct mm_struct;
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
 
-extern void map_hpux_gateway_page(struct task_struct *tsk, struct mm_struct *mm);
-
 extern unsigned long get_wchan(struct task_struct *p);
 
 #define KSTK_EIP(tsk)	((tsk)->thread.regs.iaoq[0])
arch/parisc/kernel/entry.S +0 -20
index e8f07dd..2ab16bb 100644
@@ -1774,10 +1774,6 @@ ENTRY(sys_rt_sigreturn_wrapper)
 ENDPROC(sys_rt_sigreturn_wrapper)
 
 ENTRY(syscall_exit)
-	/* NOTE: HP-UX syscalls also come through here
-	 * after hpux_syscall_exit fixes up return
-	 * values. */
-
 	/* NOTE: Not all syscalls exit this way.  rt_sigreturn will exit
 	 * via syscall_exit_rfi if the signal was received while the process
 	 * was running.

@@ -1789,22 +1785,6 @@ ENTRY(syscall_exit)
 	LDREG     TI_TASK(%r1),%r1
 	STREG     %r28,TASK_PT_GR28(%r1)
 
-#ifdef CONFIG_HPUX
-/* <linux/personality.h> cannot be easily included */
-#define PER_HPUX 0x10
-	ldw	TASK_PERSONALITY(%r1),%r19
-
-	/* We can't use "CMPIB<> PER_HPUX" since "im5" field is sign extended */
-	ldo	  -PER_HPUX(%r19), %r19
-	cmpib,COND(<>),n 0,%r19,1f
-
-	/* Save other hpux returns if personality is PER_HPUX */
-	STREG     %r22,TASK_PT_GR22(%r1)
-	STREG     %r29,TASK_PT_GR29(%r1)
-1:
-
-#endif /* CONFIG_HPUX */
-
 	/* Seems to me that dp could be wrong here, if the syscall involved
 	 * calling a module, and nothing got round to restoring dp on return.
 	 */
arch/parisc/kernel/process.c +3 -12
index 0bbbf0d..8a488c2 100644
@@ -193,9 +193,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	 * Make them const so the compiler knows they live in .text */
 	extern void * const ret_from_kernel_thread;
 	extern void * const child_return;
-#ifdef CONFIG_HPUX
-	extern void * const hpux_child_return;
-#endif
+
 	if (unlikely(p->flags & PF_KTHREAD)) {
 		memset(cregs, 0, sizeof(struct pt_regs));
 		if (!usp) /* idle thread */

@@ -229,15 +227,8 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 				cregs->gr[30] = usp;
 		}
 		cregs->ksp = (unsigned long)stack + THREAD_SZ_ALGN + FRAME_SIZE;
-		if (personality(p->personality) == PER_HPUX) {
-#ifdef CONFIG_HPUX
-			cregs->kpc = (unsigned long) &hpux_child_return;
-#else
-			BUG();
-#endif
-		} else {
-			cregs->kpc = (unsigned long) &child_return;
-		}
+		cregs->kpc = (unsigned long) &child_return;
+
 		/* Setup thread TLS area from the 4th parameter in clone */
 		if (clone_flags & CLONE_SETTLS)
 			cregs->cr27 = cregs->gr[23];
arch/parisc/kernel/signal.c +1 -2
index 9b910a0..81e749f 100644
@@ -9,8 +9,7 @@
  *
  *  Like the IA-64, we are a recent enough port (we are *starting*
  *  with glibc2.2) that we do not need to support the old non-realtime
- *  Linux signals.  Therefore we don't.  HP/UX signals will go in
- *  arch/parisc/hpux/signal.c when we figure out how to do them.
+ *  Linux signals.  Therefore we don't.
  */
 
 #include <linux/sched.h>
arch/parisc/mm/init.c +0 -71

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