ia64: add TIF_RESTORE_SIGMASK

PATCH New Alexey Dobriyan 1 participant 1 message Jan 23, 2007

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Alexey Dobriyan

author

2007-01-23 15:57 UTC #0 lore raw

PATCH 1/2 ia64: add TIF_RESTORE_SIGMASK

ia32 compat code not tested. :-(
please, point fingers if I broke something. --adobriyan
---------------------------------------
[PATCH] ia64: add TIF_RESTORE_SIGMASK

From: Alexey Kuznetsov <[email protected]>

Signed-off-by Alexey Kuznetsov <[email protected]>

Signed-off-by Alexey Dobriyan <[email protected]>

---

 arch/ia64/ia32/ia32_entry.S    |   39 ----------------------
 arch/ia64/ia32/ia32_signal.c   |   59 +++++-----------------------------
 arch/ia64/kernel/entry.S       |   26 ---------------
 arch/ia64/kernel/process.c     |    6 +--
 arch/ia64/kernel/sigframe.h    |    2 -
 arch/ia64/kernel/signal.c      |   71 +++++++++++++----------------------------
 include/asm-ia64/thread_info.h |    4 +-
 include/asm-ia64/unistd.h      |    2 +
 8 files changed, 43 insertions(+), 166 deletions(-)

arch/ia64/ia32/ia32_entry.S +1 ~~-38~~

@@ -52,43 +52,6 @@ ENTRY(ia32_clone)
 	br.ret.sptk.many rp
 END(ia32_clone)
 
-ENTRY(sys32_rt_sigsuspend)
-	.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
-	alloc loc1=ar.pfs,8,2,3,0		// preserve all eight input regs
-	mov loc0=rp
-	mov out0=in0				// mask
-	mov out1=in1				// sigsetsize
-	mov out2=sp				// out2 = &sigscratch
-	.fframe 16
-	adds sp=-16,sp				// allocate dummy "sigscratch"
-	;;
-	.body
-	br.call.sptk.many rp=ia32_rt_sigsuspend
-1:	.restore sp
-	adds sp,sp
-	mov rp=loc0
-	mov ar.pfs=loc1
-	br.ret.sptk.many rp
-END(sys32_rt_sigsuspend)
-
-ENTRY(sys32_sigsuspend)
-	.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
-	alloc loc1=ar.pfs,8,2,3,0		// preserve all eight input regs
-	mov loc0=rp
-	mov out0=in2				// mask (first two args are ignored)
-	;;
-	mov out1=sp				// out1 = &sigscratch
-	.fframe 16
-	adds sp=-16,sp				// allocate dummy "sigscratch"
-	.body
-	br.call.sptk.many rp=ia32_sigsuspend
-1:	.restore sp
-	adds sp,sp
-	mov rp=loc0
-	mov ar.pfs=loc1
-	br.ret.sptk.many rp
-END(sys32_sigsuspend)
-
 GLOBAL_ENTRY(ia32_ret_from_clone)
 	PT_REGS_UNWIND_INFO(0)
 {	/*

@@ -389,7 +352,7 @@ ia32_syscall_table:
 	data8 sys_rt_sigpending
 	data8 compat_sys_rt_sigtimedwait
 	data8 sys32_rt_sigqueueinfo
-	data8 sys32_rt_sigsuspend
+	data8 compat_sys_rt_sigsuspend
 	data8 sys32_pread	  /* 180 */
 	data8 sys32_pwrite
 	data8 sys_chown	/* 16-bit version */

arch/ia64/ia32/ia32_signal.c +10 ~~-49~~

69 lines not on this page · raw message

arch/ia64/kernel/entry.S +0 ~~-26~~

@@ -1202,32 +1202,6 @@ (pNonSys) mov out2=0				// out2=0 => no
 	br.ret.sptk.many rp
 END(notify_resume_user)
 
-GLOBAL_ENTRY(sys_rt_sigsuspend)
-	.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
-	alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs in case of syscall restart!
-	mov r9=ar.unat
-	mov loc0=rp				// save return address
-	mov out0=in0				// mask
-	mov out1=in1				// sigsetsize
-	adds out2=8,sp				// out2=&sigscratch->ar_pfs
-	;;
-	.fframe 16
-	.spillsp ar.unat, 16
-	st8 [sp]=r9,-16				// allocate space for ar.unat and save it
-	st8 [out2]=loc1,-8			// save ar.pfs, out2=&sigscratch
-	.body
-	br.call.sptk.many rp=ia64_rt_sigsuspend
-.ret17:	.restore sp
-	adds sp,sp				// pop scratch stack space
-	;;
-	ld8 r9=[sp]				// load new unat from sw->caller_unat
-	mov rp=loc0
-	;;
-	mov ar.unat=r9
-	mov ar.pfs=loc1
-	br.ret.sptk.many rp
-END(sys_rt_sigsuspend)
-
 ENTRY(sys_rt_sigreturn)
 	PT_REGS_UNWIND_INFO(0)
 	/*

arch/ia64/kernel/process.c +3 -3

@@ -155,7 +155,7 @@ show_regs (struct pt_regs *regs)
 }
 
 void
-do_notify_resume_user (sigset_t *oldset, struct sigscratch *scr, long in_syscall)
+do_notify_resume_user (sigset_t *unused, struct sigscratch *scr, long in_syscall)
 {
 	if (fsys_mode(current, &scr->pt)) {
 		/* defer signal-handling etc. until we return to privilege-level 0.  */

@@ -170,8 +170,8 @@ #ifdef CONFIG_PERFMON
 #endif
 
 	/* deal with pending signal delivery */
-	if (test_thread_flag(TIF_SIGPENDING))
-		ia64_do_signal(oldset, scr, in_syscall);
+	if (test_thread_flag(TIF_SIGPENDING)||test_thread_flag(TIF_RESTORE_SIGMASK))
+		ia64_do_signal(scr, in_syscall);
 }
 
 static int pal_halt        = 1;

arch/ia64/kernel/sigframe.h +1 -1

@@ -22,4 +22,4 @@ struct sigframe {
 	struct sigcontext sc;
 };
 
-extern long ia64_do_signal (sigset_t *, struct sigscratch *, long);
+extern void ia64_do_signal (struct sigscratch *, long);

arch/ia64/kernel/signal.c +23 ~~-48~~

102 lines not on this page · raw message

include/asm-ia64/thread_info.h +3 -1

@@ -84,6 +84,7 @@ #define TIF_SIGPENDING		1	/* signal pend
 #define TIF_NEED_RESCHED	2	/* rescheduling necessary */
 #define TIF_SYSCALL_TRACE	3	/* syscall trace active */
 #define TIF_SYSCALL_AUDIT	4	/* syscall auditing active */
+#define TIF_RESTORE_SIGMASK	5	/* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_MEMDIE		17
 #define TIF_MCA_INIT		18	/* this task is processing MCA or INIT */

@@ -94,6 +95,7 @@ #define _TIF_SYSCALL_TRACE	(1 << TIF_SYS
 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SYSCALL_TRACEAUDIT	(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
+#define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
 #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
 #define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)

@@ -102,7 +104,7 @@ #define _TIF_DB_DISABLED	(1 << TIF_DB_DI
 #define _TIF_FREEZE		(1 << TIF_FREEZE)
 
 /* "work to do on user-return" bits */
-#define TIF_ALLWORK_MASK	(_TIF_NOTIFY_RESUME|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
+#define TIF_ALLWORK_MASK	(_TIF_NOTIFY_RESUME|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_RESTORE_SIGMASK)
 /* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */
 #define TIF_WORK_MASK		(TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT))

include/asm-ia64/unistd.h +2 -0

@@ -298,6 +298,7 @@ #ifdef __KERNEL__
 #define NR_syscalls			279 /* length of syscall table */
 
 #define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
 
 #ifdef CONFIG_IA32_SUPPORT
 # define __ARCH_WANT_SYS_FADVISE64

@@ -308,6 +309,7 @@ # define __ARCH_WANT_SYS_OLD_GETRLIMIT
 # define __ARCH_WANT_SYS_OLDUMOUNT
 # define __ARCH_WANT_SYS_SIGPENDING
 # define __ARCH_WANT_SYS_SIGPROCMASK
+# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
 # define __ARCH_WANT_COMPAT_SYS_TIME
 #endif