From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Sun, 7 Dec 2025 20:10:31 +0100
Subject: Add build system scaffolding and libc headers

---
 include/arch/x86_64/asm/ptrace.h | 77 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 include/arch/x86_64/asm/ptrace.h

(limited to 'include/arch/x86_64/asm/ptrace.h')

diff --git a/include/arch/x86_64/asm/ptrace.h b/include/arch/x86_64/asm/ptrace.h
new file mode 100644
index 00000000..cf794ef4
--- /dev/null
+++ b/include/arch/x86_64/asm/ptrace.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _ASM_X86_PTRACE_H
+#define _ASM_X86_PTRACE_H
+
+/* For */
+#include <asm/ptrace-abi.h>
+#include <asm/processor-flags.h>
+
+#ifndef __ASSEMBLER__
+
+#ifdef __i386__
+/* this struct defines the way the registers are stored on the
+   stack during a system call. */
+
+struct pt_regs {
+	long ebx;
+	long ecx;
+	long edx;
+	long esi;
+	long edi;
+	long ebp;
+	long eax;
+	int xds;
+	int xes;
+	int xfs;
+	int xgs;
+	long orig_eax;
+	long eip;
+	int xcs;
+	long eflags;
+	long esp;
+	int xss;
+};
+
+#else /* __i386__ */
+
+struct pt_regs {
+	/*
+	 * C ABI says these regs are callee-preserved. They aren't saved on
+	 * kernel entry unless syscall needs a complete, fully filled "struct
+	 * pt_regs".
+	 */
+	unsigned long r15;
+	unsigned long r14;
+	unsigned long r13;
+	unsigned long r12;
+	unsigned long rbp;
+	unsigned long rbx;
+	/* These regs are callee-clobbered. Always saved on kernel entry. */
+	unsigned long r11;
+	unsigned long r10;
+	unsigned long r9;
+	unsigned long r8;
+	unsigned long rax;
+	unsigned long rcx;
+	unsigned long rdx;
+	unsigned long rsi;
+	unsigned long rdi;
+	/*
+	 * On syscall entry, this is syscall#. On CPU exception, this is error
+	 * code. On hw interrupt, it's IRQ number:
+	 */
+	unsigned long orig_rax;
+	/* Return frame for iretq */
+	unsigned long rip;
+	unsigned long cs;
+	unsigned long eflags;
+	unsigned long rsp;
+	unsigned long ss;
+	/* top of stack page */
+};
+
+#endif /* !__i386__ */
+
+#endif /* !__ASSEMBLER__ */
+
+#endif /* _ASM_X86_PTRACE_H */
-- 
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