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Diffstat (limited to 'arch/um/sys-x86_64/stub_segv.c')
-rw-r--r--arch/um/sys-x86_64/stub_segv.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/arch/um/sys-x86_64/stub_segv.c b/arch/um/sys-x86_64/stub_segv.c
deleted file mode 100644
index a2709953319..00000000000
--- a/arch/um/sys-x86_64/stub_segv.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#include <stddef.h>
-#include <signal.h>
-#include <linux/compiler.h>
-#include <asm/unistd.h>
-#include "uml-config.h"
-#include "sysdep/sigcontext.h"
-#include "sysdep/faultinfo.h"
-#include "sysdep/stub.h"
-
-/* Copied from sys-x86_64/signal.c - Can't find an equivalent definition
- * in the libc headers anywhere.
- */
-struct rt_sigframe
-{
- char *pretcode;
- struct ucontext uc;
- struct siginfo info;
-};
-
-/* Copied here from <linux/kernel.h> - we're userspace. */
-#define container_of(ptr, type, member) ({ \
- const typeof( ((type *)0)->member ) *__mptr = (ptr); \
- (type *)( (char *)__mptr - offsetof(type,member) );})
-
-void __attribute__ ((__section__ (".__syscall_stub")))
-stub_segv_handler(int sig)
-{
- struct ucontext *uc;
- int pid;
-
- __asm__("movq %%rdx, %0" : "=g" (uc) :);
- GET_FAULTINFO_FROM_SC(*((struct faultinfo *) UML_CONFIG_STUB_DATA),
- &uc->uc_mcontext);
-
- pid = stub_syscall0(__NR_getpid);
- stub_syscall2(__NR_kill, pid, SIGUSR1);
-
- /* sys_sigreturn expects that the stack pointer will be 8 bytes into
- * the signal frame. So, we use the ucontext pointer, which we know
- * already, to get the signal frame pointer, and add 8 to that.
- */
- __asm__("movq %0, %%rsp; movq %1, %%rax ; syscall": :
- "g" ((unsigned long) container_of(uc, struct rt_sigframe,
- uc) + 8),
- "g" (__NR_rt_sigreturn));
-}