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authorNicolas Iooss <nicolas.iooss_linux@m4x.org>2014-10-12 13:02:13 +0200
committerRichard Weinberger <richard@nod.at>2015-05-31 13:14:07 +0200
commit5f32943b5e9a48bf3269430e1a7a210411e0cc98 (patch)
treefe79cd121b75b25f74d94db19806612ee032fbcc /arch
parent05eacfd00ccf239a24cfb409b084fa126c2e9468 (diff)
downloadop-kernel-dev-5f32943b5e9a48bf3269430e1a7a210411e0cc98.zip
op-kernel-dev-5f32943b5e9a48bf3269430e1a7a210411e0cc98.tar.gz
um/os-Linux: Use char[] for syscall_stub declarations
When declaring __syscall_stub_start, use the same type in UML userspace code as in arch/um/include/asm/sections.h. While at it, also declare batch_syscall_stub as char[]. Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch')
-rw-r--r--arch/um/os-Linux/skas/mem.c6
-rw-r--r--arch/um/os-Linux/skas/process.c8
2 files changed, 7 insertions, 7 deletions
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index e7f8c94..35015e3 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -18,7 +18,7 @@
#include <sysdep/ptrace.h>
#include <sysdep/stub.h>
-extern unsigned long batch_syscall_stub, __syscall_stub_start;
+extern char batch_syscall_stub[], __syscall_stub_start[];
extern void wait_stub_done(int pid);
@@ -38,8 +38,8 @@ static int __init init_syscall_regs(void)
{
get_safe_registers(syscall_regs, NULL);
syscall_regs[REGS_IP_INDEX] = STUB_CODE +
- ((unsigned long) &batch_syscall_stub -
- (unsigned long) &__syscall_stub_start);
+ ((unsigned long) batch_syscall_stub -
+ (unsigned long) __syscall_stub_start);
return 0;
}
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 7a97775..3dddedb 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -174,7 +174,7 @@ static void handle_trap(int pid, struct uml_pt_regs *regs,
handle_syscall(regs);
}
-extern int __syscall_stub_start;
+extern char __syscall_stub_start[];
static int userspace_tramp(void *stack)
{
@@ -197,7 +197,7 @@ static int userspace_tramp(void *stack)
* This has a pte, but it can't be mapped in with the usual
* tlb_flush mechanism because this is part of that mechanism
*/
- fd = phys_mapping(to_phys(&__syscall_stub_start), &offset);
+ fd = phys_mapping(to_phys(__syscall_stub_start), &offset);
addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE,
PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset);
if (addr == MAP_FAILED) {
@@ -223,7 +223,7 @@ static int userspace_tramp(void *stack)
unsigned long v = STUB_CODE +
(unsigned long) stub_segv_handler -
- (unsigned long) &__syscall_stub_start;
+ (unsigned long) __syscall_stub_start;
set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE);
sigemptyset(&sa.sa_mask);
@@ -447,7 +447,7 @@ static int __init init_thread_regs(void)
/* Set parent's instruction pointer to start of clone-stub */
thread_regs[REGS_IP_INDEX] = STUB_CODE +
(unsigned long) stub_clone_handler -
- (unsigned long) &__syscall_stub_start;
+ (unsigned long) __syscall_stub_start;
thread_regs[REGS_SP_INDEX] = STUB_DATA + UM_KERN_PAGE_SIZE -
sizeof(void *);
#ifdef __SIGNAL_FRAMESIZE
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