arch/x86/realmode/rm/header.S

Source file repositories/reference/linux-study-clean/arch/x86/realmode/rm/header.S

File Facts

System
Linux kernel
Corpus path
arch/x86/realmode/rm/header.S
Extension
.S
Size
1035 bytes
Lines
46
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: arch/x86
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/linkage.h>
#include <asm/page_types.h>
#include <asm/segment.h>

#include "realmode.h"
	
	.section ".header", "a"

	.balign	16
SYM_DATA_START(real_mode_header)
	.long	pa_text_start
	.long	pa_ro_end
	/* SMP trampoline */
	.long	pa_trampoline_start
	.long	pa_trampoline_header
#ifdef CONFIG_AMD_MEM_ENCRYPT
	.long	pa_sev_es_trampoline_start
#endif
#ifdef CONFIG_X86_64
	.long	pa_trampoline_start64
	.long	pa_trampoline_pgd;
#endif
	/* ACPI S3 wakeup */
#ifdef CONFIG_ACPI_SLEEP
	.long	pa_wakeup_start
	.long	pa_wakeup_header
#endif
	/* APM/BIOS reboot */
	.long	pa_machine_real_restart_asm
#ifdef CONFIG_X86_64
	.long	__KERNEL32_CS
#endif
SYM_DATA_END(real_mode_header)

	/* End signature, used to verify integrity */
	.section ".signature","a"
	.balign 4
SYM_DATA(end_signature, .long REALMODE_END_SIGNATURE)

Annotation

Implementation Notes