1 files changed, 45 insertions, 2 deletions
diff --git a/arch/um/sys-i386/stub.S b/arch/um/sys-i386/stub.S
index 2f2c70a8f04..6a70d9ab5c2 100644
--- a/arch/um/sys-i386/stub.S
+++ b/arch/um/sys-i386/stub.S
@@ -2,7 +2,50 @@
 
 	.globl syscall_stub
 .section .__syscall_stub, "x"
-syscall_stub:
-	int 	$0x80
+
+	.globl batch_syscall_stub
+batch_syscall_stub:
+	/* load pointer to first operation */
+	mov	$(UML_CONFIG_STUB_DATA+8), %esp
+
+again:
+	/* load length of additional data */
+	mov	0x0(%esp), %eax
+
+	/* if(length == 0) : end of list */
+	/* write possible 0 to header */
+	mov	%eax, UML_CONFIG_STUB_DATA+4
+	cmpl	$0, %eax
+	jz	done
+
+	/* save current pointer */
+	mov	%esp, UML_CONFIG_STUB_DATA+4
+
+	/* skip additional data */
+	add	%eax, %esp
+
+	/* load syscall-# */
+	pop	%eax
+
+	/* load syscall params */
+	pop	%ebx
+	pop	%ecx
+	pop	%edx
+	pop	%esi
+ 	pop	%edi
+	pop	%ebp
+
+	/* execute syscall */
+	int	$0x80
+
+	/* check return value */
+	pop	%ebx
+	cmp	%ebx, %eax
+	je	again
+
+done:
+	/* save return value */
 	mov	%eax, UML_CONFIG_STUB_DATA
+
+	/* stop */
 	int3