---

yaml --- r: 163595 b: refs/heads/master c: f673c03 h: refs/heads/master i: 163593: e9da8a4 163591: 5a84852 v: v3
git-mirror · Jun 19, 2009 · cb26bb3 · cb26bb3
1 parent a184ac3
commit cb26bb3
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Showing 5 changed files with 19 additions and 54 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 78229db4c4f78f27ecf772fe7489a70530ba9862
+refs/heads/master: f673c032ed13ed8f3fda5922c2190da2892398bc
diff --git a/trunk/arch/score/kernel/Makefile b/trunk/arch/score/kernel/Makefile
@@ -5,6 +5,7 @@
 extra-y	:= head.o vmlinux.lds
 
 obj-y += entry.o init_task.o irq.o process.o ptrace.o \
-	setup.o signal.o sys_score.o time.o traps.o
+	setup.o signal.o sys_score.o time.o traps.o \
+	sys_call_table.o
 
 obj-$(CONFIG_MODULES) += module.o
diff --git a/trunk/arch/score/kernel/entry.S b/trunk/arch/score/kernel/entry.S
@@ -400,6 +400,8 @@ ENTRY(handle_sys)
 	sw	r4, [r0, PT_ORIG_R4]	#for restart syscall
 	sw	r7, [r0, PT_ORIG_R7]	#for restart syscall
 	sw	r27, [r0, PT_IS_SYSCALL] # it from syscall
+	sw	r8, [r0, 16]		# argument 5 from user r8
+	sw	r9, [r0, 20]		# argument 6 from user r9
 
 	lw	r9, [r0, PT_EPC]	# skip syscall on return
 	addi	r9, 4
@@ -408,19 +410,14 @@ ENTRY(handle_sys)
 	cmpi.c	r27, __NR_syscalls 	# check syscall number
 	bgtu	illegal_syscall
 
-	slli	r8, r27, 3		# get syscall routine
+	slli	r8, r27, 2		# get syscall routine
 	la	r11, sys_call_table
 	add	r11, r11, r8
 	lw	r10, [r11]		# get syscall entry
-	lw	r11, [r11, 4]		# get number of args
 
 	cmpz.c	r10
 	beq	illegal_syscall
 
-	cmpi.c	r11, 4			# more than 4 arguments?
-	bgtu	stackargs
-
-stack_done:
 	lw	r8, [r28, TI_FLAGS]
 	li	r9, _TIF_SYSCALL_TRACE
 	and.c	r8, r8, r9
@@ -475,44 +472,6 @@ syscall_trace_entry:
 1:	sw	r4, [r0, PT_R2]		# result
 	j	syscall_exit
 
-stackargs:
-	lw	r8, [r0, PT_R0]
-	andri.c	r9, r8, 3		# test whether user sp is align a word
-	bne	bad_stack
-	subi	r11, 5
-	slli	r9, r11, 2
-	add.c	r9, r9, r8
-
-	bmi	bad_stack
-	la	r9, 3f			# calculate branch address
-	slli	r11, r11, 3
-	sub	r9, r9, r11
-	br	r9
-
-2:	lw	r9, [r8, 20]		# argument 6 from usp
-	sw	r9, [r0, 20]
-
-3:	lw	r9, [r8, 16]		# argument 5 from usp
-	sw	r9, [r0, 16]
-	j	stack_done
-
-	.section __ex_table,"a"
-	.word	2b, bad_stack
-	.word	3b, bad_stack
-	.previous
-
-	/*
-	 * The stackpointer for a call with more than 4 arguments is bad.
-	 * We probably should handle this case a bit more drastic.
-	 */
-bad_stack:
-	neg	r27, r27		# error
-	sw	r27, [r0, PT_ORIG_R4]
-	sw	r27, [r0, PT_R4]
-	ldi	r8, 1			# set error flag
-	sw	r8, [r0, PT_R7]
-	j	syscall_return
-
 illegal_syscall:
 	ldi	r4, -ENOSYS		# error
 	sw	r4, [r0, PT_ORIG_R4]

diff --git a/trunk/arch/score/kernel/sys_call_table.c b/trunk/arch/score/kernel/sys_call_table.c
@@ -0,0 +1,12 @@
+#include <linux/syscalls.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+
+#include <asm/syscalls.h>
+
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] = (call),
+
+void *sys_call_table[__NR_syscalls] = {
+#include <asm/unistd.h>
+};
diff --git a/trunk/arch/score/kernel/sys_score.c b/trunk/arch/score/kernel/sys_score.c
@@ -75,14 +75,7 @@ int score_clone(struct pt_regs *regs)
 	if (!newsp)
 		newsp = regs->regs[0];
 	parent_tidptr = (int __user *)regs->regs[6];
-
-	child_tidptr = NULL;
-	if (clone_flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)) {
-		int __user *__user *usp = (int __user *__user *)regs->regs[0];
-
-		if (get_user(child_tidptr, &usp[4]))
-			return -EFAULT;
-	}
+	child_tidptr = (int __user *)regs->regs[8];
 
 	return do_fork(clone_flags, newsp, regs, 0,
 			parent_tidptr, child_tidptr);