arch/x86/um/shared/sysdep/ptrace_64.h
Source file repositories/reference/linux-study-clean/arch/x86/um/shared/sysdep/ptrace_64.h
File Facts
- System
- Linux kernel
- Corpus path
arch/x86/um/shared/sysdep/ptrace_64.h- Extension
.h- Size
- 1684 bytes
- Lines
- 59
- Domain
- Architecture Layer
- Bucket
- arch/x86
- Inferred role
- Architecture Layer: implementation source
- Status
- source 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 uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
#ifndef __SYSDEP_X86_64_PTRACE_H
#define __SYSDEP_X86_64_PTRACE_H
#define REGS_R8(r) ((r)[HOST_R8])
#define REGS_R9(r) ((r)[HOST_R9])
#define REGS_R10(r) ((r)[HOST_R10])
#define REGS_R11(r) ((r)[HOST_R11])
#define REGS_R12(r) ((r)[HOST_R12])
#define REGS_R13(r) ((r)[HOST_R13])
#define REGS_R14(r) ((r)[HOST_R14])
#define REGS_R15(r) ((r)[HOST_R15])
#define HOST_FS_BASE 21
#define HOST_GS_BASE 22
#define HOST_DS 23
#define HOST_ES 24
#define HOST_FS 25
#define HOST_GS 26
/* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these
* are already defined for kernel code, but not for userspace code.
*/
#ifndef FS_BASE
/* These aren't defined in ptrace.h, but exist in struct user_regs_struct,
* which is what x86_64 ptrace actually uses.
*/
#define FS_BASE (HOST_FS_BASE * sizeof(long))
#define GS_BASE (HOST_GS_BASE * sizeof(long))
#define DS (HOST_DS * sizeof(long))
#define ES (HOST_ES * sizeof(long))
#define FS (HOST_FS * sizeof(long))
#define GS (HOST_GS * sizeof(long))
#endif
#define UPT_R8(r) REGS_R8((r)->gp)
#define UPT_R9(r) REGS_R9((r)->gp)
#define UPT_R10(r) REGS_R10((r)->gp)
#define UPT_R11(r) REGS_R11((r)->gp)
#define UPT_R12(r) REGS_R12((r)->gp)
#define UPT_R13(r) REGS_R13((r)->gp)
#define UPT_R14(r) REGS_R14((r)->gp)
#define UPT_R15(r) REGS_R15((r)->gp)
#define UPT_SYSCALL_ARG1(r) UPT_DI(r)
#define UPT_SYSCALL_ARG2(r) UPT_SI(r)
#define UPT_SYSCALL_ARG3(r) UPT_DX(r)
#define UPT_SYSCALL_ARG4(r) UPT_R10(r)
#define UPT_SYSCALL_ARG5(r) UPT_R8(r)
#define UPT_SYSCALL_ARG6(r) UPT_R9(r)
#endif
Annotation
- Atlas domain: Architecture Layer / arch/x86.
- Implementation status: source 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.