arch/m68k/include/asm/syscall.h
Source file repositories/reference/linux-study-clean/arch/m68k/include/asm/syscall.h
File Facts
- System
- Linux kernel
- Corpus path
arch/m68k/include/asm/syscall.h- Extension
.h- Size
- 1574 bytes
- Lines
- 77
- Domain
- Architecture Layer
- Bucket
- arch/m68k
- Inferred role
- Architecture Layer: syscall or user/kernel boundary
- Status
- core implementation candidate
Why This File Exists
CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- Defines or participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
uapi/linux/audit.hasm/unistd.h
Detected Declarations
function syscall_get_nrfunction syscall_set_nrfunction syscall_rollbackfunction syscall_get_errorfunction syscall_get_return_valuefunction syscall_set_return_valuefunction syscall_get_argumentsfunction syscall_set_argumentsfunction syscall_get_arch
Annotated Snippet
#ifndef _ASM_M68K_SYSCALL_H
#define _ASM_M68K_SYSCALL_H
#include <uapi/linux/audit.h>
#include <asm/unistd.h>
extern const unsigned long sys_call_table[];
static inline int syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return regs->orig_d0;
}
static inline void syscall_set_nr(struct task_struct *task,
struct pt_regs *regs,
int nr)
{
regs->orig_d0 = nr;
}
static inline void syscall_rollback(struct task_struct *task,
struct pt_regs *regs)
{
regs->d0 = regs->orig_d0;
}
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
unsigned long error = regs->d0;
return IS_ERR_VALUE(error) ? error : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
return regs->d0;
}
static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
regs->d0 = (long)error ?: val;
}
static inline void syscall_get_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned long *args)
{
args[0] = regs->orig_d0;
args++;
memcpy(args, ®s->d1, 5 * sizeof(args[0]));
}
static inline void syscall_set_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned long *args)
{
regs->orig_d0 = args[0];
args++;
memcpy(®s->d1, args, 5 * sizeof(args[0]));
}
static inline int syscall_get_arch(struct task_struct *task)
{
return AUDIT_ARCH_M68K;
}
#endif /* _ASM_M68K_SYSCALL_H */
Annotation
- Immediate include surface: `uapi/linux/audit.h`, `asm/unistd.h`.
- Detected declarations: `function syscall_get_nr`, `function syscall_set_nr`, `function syscall_rollback`, `function syscall_get_error`, `function syscall_get_return_value`, `function syscall_set_return_value`, `function syscall_get_arguments`, `function syscall_set_arguments`, `function syscall_get_arch`.
- Atlas domain: Architecture Layer / arch/m68k.
- Implementation status: core implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.