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| author | Len Brown <len.brown@intel.com> | 2008-10-22 23:57:26 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-10-23 00:11:07 -0400 |
| commit | 057316cc6a5b521b332a1d7ccc871cd60c904c74 (patch) | |
| tree | 4333e608da237c73ff69b10878025cca96dcb4c8 /arch/s390/include/asm/syscall.h | |
| parent | 3e2dab9a1c2deb03c311eb3f83466009147ed4d3 (diff) | |
| parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
| download | blackbird-op-linux-057316cc6a5b521b332a1d7ccc871cd60c904c74.tar.gz blackbird-op-linux-057316cc6a5b521b332a1d7ccc871cd60c904c74.zip | |
Merge branch 'linus' into test
Conflicts:
MAINTAINERS
arch/x86/kernel/acpi/boot.c
arch/x86/kernel/acpi/sleep.c
drivers/acpi/Kconfig
drivers/pnp/Makefile
drivers/pnp/quirks.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/s390/include/asm/syscall.h')
| -rw-r--r-- | arch/s390/include/asm/syscall.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h new file mode 100644 index 000000000000..6e623971fbb9 --- /dev/null +++ b/arch/s390/include/asm/syscall.h @@ -0,0 +1,80 @@ +/* + * Access to user system call parameters and results + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ + +#ifndef _ASM_SYSCALL_H +#define _ASM_SYSCALL_H 1 + +#include <asm/ptrace.h> + +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]; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ + regs->gprs[2] = regs->orig_gpr2; +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return (regs->gprs[2] >= -4096UL) ? -regs->gprs[2] : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->gprs[2]; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ + regs->gprs[2] = error ? -error : val; +} + +static inline void syscall_get_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + 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]; + } +#endif + if (i + n == 6) + args[--n] = regs->args[0]; + memcpy(args, ®s->gprs[2 + i], n * sizeof(args[0])); +} + +static inline void syscall_set_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + const unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i + n == 6) + regs->args[0] = args[--n]; + memcpy(®s->gprs[2 + i], args, n * sizeof(args[0])); +} + +#endif /* _ASM_SYSCALL_H */ |
