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authorDavid S. Miller <davem@davemloft.net>2008-12-02 19:50:27 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-02 19:50:27 -0800
commitaa2ba5f1082dc705745899584aac8416d710c056 (patch)
treebde0bf4aff036c6bac19a0212194ae1092afb3c9 /arch/s390/include/asm/syscall.h
parent68024541e2e5a8f35e281daaa5068a29e2a538a5 (diff)
parentf6f7b52e2f6149d2ee365717afff315b05720162 (diff)
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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/ixgbe/ixgbe_main.c drivers/net/smc91x.c
Diffstat (limited to 'arch/s390/include/asm/syscall.h')
-rw-r--r--arch/s390/include/asm/syscall.h28
1 files changed, 16 insertions, 12 deletions
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6e62397..2429b87 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -17,9 +17,7 @@
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
- if (regs->trap != __LC_SVC_OLD_PSW)
- return -1;
- return regs->gprs[2];
+ return regs->svcnr ? regs->svcnr : -1;
}
static inline void syscall_rollback(struct task_struct *task,
@@ -52,18 +50,20 @@ static inline void syscall_get_arguments(struct task_struct *task,
unsigned int i, unsigned int n,
unsigned long *args)
{
+ unsigned long mask = -1UL;
+
BUG_ON(i + n > 6);
#ifdef CONFIG_COMPAT
- if (test_tsk_thread_flag(task, TIF_31BIT)) {
- if (i + n == 6)
- args[--n] = (u32) regs->args[0];
- while (n-- > 0)
- args[n] = (u32) regs->gprs[2 + i + n];
- }
+ if (test_tsk_thread_flag(task, TIF_31BIT))
+ mask = 0xffffffff;
#endif
if (i + n == 6)
- args[--n] = regs->args[0];
- memcpy(args, &regs->gprs[2 + i], n * sizeof(args[0]));
+ args[--n] = regs->args[0] & mask;
+ while (n-- > 0)
+ if (i + n > 0)
+ args[n] = regs->gprs[2 + i + n] & mask;
+ if (i == 0)
+ args[0] = regs->orig_gpr2 & mask;
}
static inline void syscall_set_arguments(struct task_struct *task,
@@ -74,7 +74,11 @@ static inline void syscall_set_arguments(struct task_struct *task,
BUG_ON(i + n > 6);
if (i + n == 6)
regs->args[0] = args[--n];
- memcpy(&regs->gprs[2 + i], args, n * sizeof(args[0]));
+ while (n-- > 0)
+ if (i + n > 0)
+ regs->gprs[2 + i + n] = args[n];
+ if (i == 0)
+ regs->orig_gpr2 = args[0];
}
#endif /* _ASM_SYSCALL_H */