From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/x86/include/asm/frame.h | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/kernel/arch/x86/include/asm/frame.h b/kernel/arch/x86/include/asm/frame.h
index 296b346..fb42659 100644
--- a/kernel/arch/x86/include/asm/frame.h
+++ b/kernel/arch/x86/include/asm/frame.h
@@ -60,12 +60,26 @@
#define FRAME_END "pop %" _ASM_BP "\n"
#ifdef CONFIG_X86_64
+
#define ENCODE_FRAME_POINTER \
"lea 1(%rsp), %rbp\n\t"
+
+static inline unsigned long encode_frame_pointer(struct pt_regs *regs)
+{
+ return (unsigned long)regs + 1;
+}
+
#else /* !CONFIG_X86_64 */
+
#define ENCODE_FRAME_POINTER \
"movl %esp, %ebp\n\t" \
"andl $0x7fffffff, %ebp\n\t"
+
+static inline unsigned long encode_frame_pointer(struct pt_regs *regs)
+{
+ return (unsigned long)regs & 0x7fffffff;
+}
+
#endif /* CONFIG_X86_64 */
#endif /* __ASSEMBLY__ */
@@ -83,6 +97,11 @@
#define ENCODE_FRAME_POINTER
+static inline unsigned long encode_frame_pointer(struct pt_regs *regs)
+{
+ return 0;
+}
+
#endif
#define FRAME_BEGIN
--
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