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[commits] r13233 - in /fsf/trunk/ports: ./ sysdeps/arm/linuxthreads/ sysdeps/unix/sysv/linux/arm/ sysdeps/unix/sysv/linux/arm/eabi/ sy...



Author: eglibc
Date: Tue Mar 22 00:04:32 2011
New Revision: 13233

Log:
Import glibc-ports-mainline for 2011-03-22

Removed:
    fsf/trunk/ports/sysdeps/arm/linuxthreads/
    fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/linuxthreads/
    fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/linuxthreads/
Modified:
    fsf/trunk/ports/ChangeLog.arm
    fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/nptl/sysdep-cancel.h
    fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/sysdep.h
    fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/vfork.S

Modified: fsf/trunk/ports/ChangeLog.arm
==============================================================================
--- fsf/trunk/ports/ChangeLog.arm (original)
+++ fsf/trunk/ports/ChangeLog.arm Tue Mar 22 00:04:32 2011
@@ -1,3 +1,41 @@
+2011-03-21  Ulrich Weigand  <ulrich.weigand@xxxxxxxxxx>
+
+	* sysdeps/arm/linuxthreads: Remove directory.
+	* sysdeps/unix/sysv/linux/arm/linuxthreads: Likewise.
+	* sysdeps/unix/sysv/linux/arm/eabi/linuxthreads: Likewise.
+
+2011-03-21  Ulrich Weigand  <ulrich.weigand@xxxxxxxxxx>
+
+	* sysdeps/unix/sysv/linux/arm/eabi/nptl/sysdep-cancel.h (PSEUDO): Add
+	missing "cmn r0, $4096" for _nocancel system call stubs.
+
+2011-03-21  Ulrich Weigand  <ulrich.weigand@xxxxxxxxxx>
+
+	* sysdeps/unix/sysv/arm/eabi/sysdep.h (DO_CALL): Do not save/restore
+	r7 into IP.
+	(DOARGS_0, UNDOARGS_0): Redefine to save/restore r7 to the stack.
+	Create appropriate ARM unwind record.
+	(DOARGS_1, UNDOARGS_1): Likewise.
+	(DOARGS_2, UNDOARGS_2): Likewise.
+	(DOARGS_3, UNDOARGS_3): Likewise.
+	(DOARGS_4, UNDOARGS_4): Likewise.
+	(DOARGS_5, UNDOARGS_5): Likewise.
+	(DOARGS_6, UNDOARGS_6): Likewise.
+	(DOARGS_7, UNDOARGS_7): Likewise.
+	* sysdeps/unix/sysv/arm/eabi/nptl/sysdep-cancel.h (PSEUDO): Adapt to
+	DO_CALL/DOARGS_xxx/UNDOARGS_xxx changes.
+	(RESTART_UNWIND): Likewise.
+	(DOCARGS_0, RESTORE_LR_0): Likewise.
+	(DOCARGS_1): Likewise.
+	(DOCARGS_2): Likewise.
+	(DOCARGS_3): Likewise.
+	(DOCARGS_4): Likewise.
+	(DOCARGS_5, UNDOCARGS_5, RESTORE_LR_5): Likewise.
+	(DOCARGS_6, UNDOCARGS_6): Likewise.
+	* sysdeps/unix/sysv/linux/arm/vfork.S (__vfork): Do no use DO_CALL to
+	call vfork.  In the __ARM_EABI__ case, save r7 both to IP (to restore
+	from) and the stack (to create an ARM unwind record).
+
 2011-03-21  Joseph Myers  <joseph@xxxxxxxxxxxxxxxx>
 
 	* sysdeps/arm/eabi/__longjmp.S, sysdeps/arm/eabi/bits/fenv.h,

Modified: fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/nptl/sysdep-cancel.h
==============================================================================
--- fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/nptl/sysdep-cancel.h (original)
+++ fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/nptl/sysdep-cancel.h Tue Mar 22 00:04:32 2011
@@ -39,6 +39,7 @@
     .cfi_sections .debug_frame;						\
     cfi_startproc;							\
     DO_CALL (syscall_name, args);					\
+    cmn r0, $4096;							\
     PSEUDO_RET;								\
     cfi_endproc;							\
   .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	\
@@ -47,20 +48,20 @@
     DOARGS_##args;							\
     bne .Lpseudo_cancel;						\
     cfi_remember_state;							\
-    DO_CALL (syscall_name, 0);						\
+    ldr r7, =SYS_ify (syscall_name);					\
+    swi 0x0;								\
     UNDOARGS_##args;							\
     cmn r0, $4096;							\
     PSEUDO_RET;								\
     cfi_restore_state;							\
   .Lpseudo_cancel:							\
-    .fnstart;								\
+    .fnstart;		/* matched by the .fnend in UNDOARGS below.  */	\
     DOCARGS_##args;	/* save syscall args etc. around CENABLE.  */	\
     CENABLE;								\
     mov ip, r0;		/* put mask in safe place.  */			\
     UNDOCARGS_##args;	/* restore syscall args.  */			\
     ldr r7, =SYS_ify (syscall_name);					\
     swi 0x0;		/* do the call.  */				\
-    .fnend;		/* Past here we can't easily unwind.  */	\
     mov r7, r0;		/* save syscall return value.  */		\
     mov r0, ip;		/* get mask back.  */				\
     CDISABLE;								\
@@ -69,34 +70,34 @@
     UNDOARGS_##args;							\
     cmn r0, $4096
 
-/* DOARGS pushes four bytes on the stack for five arguments, eight bytes for
-   six arguments, and nothing for fewer.  In order to preserve doubleword
+/* DOARGS pushes eight bytes on the stack for five arguments, twelve bytes for
+   six arguments, and four bytes for fewer.  In order to preserve doubleword
    alignment, sometimes we must save an extra register.  */
 
 # define RESTART_UNWIND \
   .fnend; \
   .fnstart; \
-  .save {r7, lr}
+  .save {r7}; \
+  .save {lr}
 
 # define DOCARGS_0 \
-  stmfd sp!, {r7, lr}; \
-  cfi_adjust_cfa_offset (8); \
-  cfi_rel_offset (r7, 0); \
-  cfi_rel_offset (lr, 4); \
-  .save {r7, lr}
+  .save {r7}; \
+  str lr, [sp, #-4]!; \
+  cfi_adjust_cfa_offset (4); \
+  cfi_rel_offset (lr, 0); \
+  .save {lr}
 # define UNDOCARGS_0
 # define RESTORE_LR_0 \
-  ldmfd sp!, {r7, lr}; \
-  cfi_adjust_cfa_offset (-8); \
-  cfi_restore (r7); \
+  ldr lr, [sp], #4; \
+  cfi_adjust_cfa_offset (-4); \
   cfi_restore (lr)
 
 # define DOCARGS_1 \
-  stmfd sp!, {r0, r1, r7, lr}; \
-  cfi_adjust_cfa_offset (16); \
-  cfi_rel_offset (r7, 8); \
-  cfi_rel_offset (lr, 12); \
-  .save {r7, lr}; \
+  .save {r7}; \
+  stmfd sp!, {r0, r1, lr}; \
+  cfi_adjust_cfa_offset (12); \
+  cfi_rel_offset (lr, 8); \
+  .save {lr}; \
   .pad #8
 # define UNDOCARGS_1 \
   ldr r0, [sp], #8; \
@@ -106,11 +107,11 @@
   RESTORE_LR_0
 
 # define DOCARGS_2 \
-  stmfd sp!, {r0, r1, r7, lr}; \
-  cfi_adjust_cfa_offset (16); \
-  cfi_rel_offset (r7, 8); \
-  cfi_rel_offset (lr, 12); \
-  .save {r7, lr}; \
+  .save {r7}; \
+  stmfd sp!, {r0, r1, lr}; \
+  cfi_adjust_cfa_offset (12); \
+  cfi_rel_offset (lr, 8); \
+  .save {lr}; \
   .pad #8
 # define UNDOCARGS_2 \
   ldmfd sp!, {r0, r1}; \
@@ -120,11 +121,11 @@
   RESTORE_LR_0
 
 # define DOCARGS_3 \
-  stmfd sp!, {r0, r1, r2, r3, r7, lr}; \
-  cfi_adjust_cfa_offset (24); \
-  cfi_rel_offset (r7, 16); \
-  cfi_rel_offset (lr, 20); \
-  .save {r7, lr}; \
+  .save {r7}; \
+  stmfd sp!, {r0, r1, r2, r3, lr}; \
+  cfi_adjust_cfa_offset (20); \
+  cfi_rel_offset (lr, 16); \
+  .save {lr}; \
   .pad #16
 # define UNDOCARGS_3 \
   ldmfd sp!, {r0, r1, r2, r3}; \
@@ -134,11 +135,11 @@
   RESTORE_LR_0
 
 # define DOCARGS_4 \
-  stmfd sp!, {r0, r1, r2, r3, r7, lr}; \
-  cfi_adjust_cfa_offset (24); \
-  cfi_rel_offset (r7, 16); \
-  cfi_rel_offset (lr, 20); \
-  .save {r7, lr}; \
+  .save {r7}; \
+  stmfd sp!, {r0, r1, r2, r3, lr}; \
+  cfi_adjust_cfa_offset (20); \
+  cfi_rel_offset (lr, 16); \
+  .save {lr}; \
   .pad #16
 # define UNDOCARGS_4 \
   ldmfd sp!, {r0, r1, r2, r3}; \
@@ -149,43 +150,40 @@
 
 /* r4 is only stmfd'ed for correct stack alignment.  */
 # define DOCARGS_5 \
-  .save {r4}; \
-  stmfd sp!, {r0, r1, r2, r3, r4, r7, lr}; \
-  cfi_adjust_cfa_offset (28); \
-  cfi_rel_offset (r7, 20); \
-  cfi_rel_offset (lr, 24); \
-  .save {r7, lr}; \
+  .save {r4, r7}; \
+  stmfd sp!, {r0, r1, r2, r3, r4, lr}; \
+  cfi_adjust_cfa_offset (24); \
+  cfi_rel_offset (lr, 20); \
+  .save {lr}; \
   .pad #20
 # define UNDOCARGS_5 \
   ldmfd sp!, {r0, r1, r2, r3}; \
   cfi_adjust_cfa_offset (-16); \
   .fnend; \
   .fnstart; \
-  .save {r4}; \
-  .save {r7, lr}; \
+  .save {r4, r7}; \
+  .save {lr}; \
   .pad #4
 # define RESTORE_LR_5 \
-  ldmfd sp!, {r4, r7, lr}; \
-  cfi_adjust_cfa_offset (-12); \
+  ldmfd sp!, {r4, lr}; \
+  cfi_adjust_cfa_offset (-8); \
   /* r4 will be marked as restored later.  */ \
-  cfi_restore (r7); \
   cfi_restore (lr)
 
 # define DOCARGS_6 \
-  .save {r4, r5}; \
-  stmfd sp!, {r0, r1, r2, r3, r7, lr}; \
-  cfi_adjust_cfa_offset (24); \
-  cfi_rel_offset (r7, 16); \
-  cfi_rel_offset (lr, 20); \
-  .save {r7, lr}; \
+  .save {r4, r5, r7}; \
+  stmfd sp!, {r0, r1, r2, r3, lr}; \
+  cfi_adjust_cfa_offset (20); \
+  cfi_rel_offset (lr, 16); \
+  .save {lr}; \
   .pad #16
 # define UNDOCARGS_6 \
   ldmfd sp!, {r0, r1, r2, r3}; \
   cfi_adjust_cfa_offset (-16); \
   .fnend; \
   .fnstart; \
-  .save {r4, r5}; \
-  .save {r7, lr}
+  .save {r4, r5, r7}; \
+  .save {lr};
 # define RESTORE_LR_6 \
   RESTORE_LR_0
 

Modified: fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/sysdep.h
==============================================================================
--- fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/sysdep.h (original)
+++ fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/sysdep.h Tue Mar 22 00:04:32 2011
@@ -106,12 +106,95 @@
 #undef	DO_CALL
 #define DO_CALL(syscall_name, args)		\
     DOARGS_##args;				\
-    mov ip, r7;					\
-    cfi_register (r7, ip);			\
     ldr r7, =SYS_ify (syscall_name);		\
     swi 0x0;					\
-    mov r7, ip;					\
-    cfi_restore (r7);				\
     UNDOARGS_##args
 
+#undef  DOARGS_0
+#define DOARGS_0 \
+  .fnstart; \
+  str r7, [sp, #-4]!; \
+  cfi_adjust_cfa_offset (4); \
+  cfi_rel_offset (r7, 0); \
+  .save { r7 }
+#undef  DOARGS_1
+#define DOARGS_1 DOARGS_0
+#undef  DOARGS_2
+#define DOARGS_2 DOARGS_0
+#undef  DOARGS_3
+#define DOARGS_3 DOARGS_0
+#undef  DOARGS_4
+#define DOARGS_4 DOARGS_0
+#undef  DOARGS_5
+#define DOARGS_5 \
+  .fnstart; \
+  stmfd sp!, {r4, r7}; \
+  cfi_adjust_cfa_offset (8); \
+  cfi_rel_offset (r4, 0); \
+  cfi_rel_offset (r7, 4); \
+  .save { r4, r7 }; \
+  ldr r4, [sp, #8]
+#undef  DOARGS_6
+#define DOARGS_6 \
+  .fnstart; \
+  mov ip, sp; \
+  stmfd sp!, {r4, r5, r7}; \
+  cfi_adjust_cfa_offset (12); \
+  cfi_rel_offset (r4, 0); \
+  cfi_rel_offset (r5, 4); \
+  cfi_rel_offset (r7, 8); \
+  .save { r4, r5, r7 }; \
+  ldmia ip, {r4, r5}
+#undef  DOARGS_7
+#define DOARGS_7 \
+  .fnstart; \
+  mov ip, sp; \
+  stmfd sp!, {r4, r5, r6, r7}; \
+  cfi_adjust_cfa_offset (16); \
+  cfi_rel_offset (r4, 0); \
+  cfi_rel_offset (r5, 4); \
+  cfi_rel_offset (r6, 8); \
+  cfi_rel_offset (r7, 12); \
+  .save { r4, r5, r6, r7 }; \
+  ldmia ip, {r4, r5, r6}
+
+#undef  UNDOARGS_0
+#define UNDOARGS_0 \
+  ldr r7, [sp], #4; \
+  cfi_adjust_cfa_offset (-4); \
+  cfi_restore (r7); \
+  .fnend
+#undef  UNDOARGS_1
+#define UNDOARGS_1 UNDOARGS_0
+#undef  UNDOARGS_2
+#define UNDOARGS_2 UNDOARGS_0
+#undef  UNDOARGS_3
+#define UNDOARGS_3 UNDOARGS_0
+#undef  UNDOARGS_4
+#define UNDOARGS_4 UNDOARGS_0
+#undef  UNDOARGS_5
+#define UNDOARGS_5 \
+  ldmfd sp!, {r4, r7}; \
+  cfi_adjust_cfa_offset (-8); \
+  cfi_restore (r4); \
+  cfi_restore (r7); \
+  .fnend
+#undef  UNDOARGS_6
+#define UNDOARGS_6 \
+  ldmfd sp!, {r4, r5, r7}; \
+  cfi_adjust_cfa_offset (-12); \
+  cfi_restore (r4); \
+  cfi_restore (r5); \
+  cfi_restore (r7); \
+  .fnend
+#undef  UNDOARGS_7
+#define UNDOARGS_7 \
+  ldmfd sp!, {r4, r5, r6, r7}; \
+  cfi_adjust_cfa_offset (-16); \
+  cfi_restore (r4); \
+  cfi_restore (r5); \
+  cfi_restore (r6); \
+  cfi_restore (r7); \
+  .fnend
+
 #endif /* _LINUX_ARM_EABI_SYSDEP_H */

Modified: fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/vfork.S
==============================================================================
--- fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/vfork.S (original)
+++ fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/vfork.S Tue Mar 22 00:04:32 2011
@@ -33,7 +33,28 @@
 #ifdef SAVE_PID
 	SAVE_PID
 #endif
-	DO_CALL (vfork, 0)
+#ifdef __ARM_EABI__
+	/* The DO_CALL macro saves r7 on the stack, to enable generation
+	   of ARM unwind info.  Since the stack is initially shared between
+	   parent and child of vfork, that saved value could be corrupted.
+	   To avoid this problem, we save r7 into ip as well, and restore
+	   from there.  */
+	mov	ip, r7
+	cfi_register (r7, ip)
+	.fnstart
+	str r7, [sp, #-4]!
+	cfi_adjust_cfa_offset (4)
+	.save { r7 }
+	ldr	r7, =SYS_ify (vfork)
+	swi	0x0
+	.fnend
+	add	sp, sp, #4
+	cfi_adjust_cfa_offset (-4)
+	mov	r7, ip
+	cfi_restore (r7);
+#else
+	swi	SYS_ify(vfork)
+#endif
 #ifdef RESTORE_PID
 	RESTORE_PID
 #endif