arch/x86/crypto/aesni-intel_asm.S
Source file repositories/reference/linux-study-clean/arch/x86/crypto/aesni-intel_asm.S
File Facts
- System
- Linux kernel
- Corpus path
arch/x86/crypto/aesni-intel_asm.S- Extension
.S- Size
- 26648 bytes
- Lines
- 1339
- 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.
- 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
linux/linkage.hlinux/objtool.hasm/frame.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
#include <linux/linkage.h>
#include <linux/objtool.h>
#include <asm/frame.h>
#define STATE1 %xmm0
#define STATE2 %xmm4
#define STATE3 %xmm5
#define STATE4 %xmm6
#define STATE STATE1
#define IN1 %xmm1
#define IN2 %xmm7
#define IN3 %xmm8
#define IN4 %xmm9
#define IN IN1
#define KEY %xmm2
#define IV %xmm3
#define BSWAP_MASK %xmm10
#define CTR %xmm11
#define INC %xmm12
#define GF128MUL_MASK %xmm7
#ifdef __x86_64__
#define AREG %rax
#define KEYP %rdi
#define OUTP %rsi
#define UKEYP OUTP
#define INP %rdx
#define LEN %rcx
#define IVP %r8
#define KLEN %r9d
#define T1 %r10
#define TKEYP T1
#define T2 %r11
#define TCTR_LOW T2
#else
#define AREG %eax
#define KEYP %edi
#define OUTP AREG
#define UKEYP OUTP
#define INP %edx
#define LEN %esi
#define IVP %ebp
#define KLEN %ebx
#define T1 %ecx
#define TKEYP T1
#endif
SYM_FUNC_START_LOCAL(_key_expansion_256a)
pshufd $0b11111111, %xmm1, %xmm1
shufps $0b00010000, %xmm0, %xmm4
pxor %xmm4, %xmm0
shufps $0b10001100, %xmm0, %xmm4
pxor %xmm4, %xmm0
pxor %xmm1, %xmm0
movaps %xmm0, (TKEYP)
add $0x10, TKEYP
RET
SYM_FUNC_END(_key_expansion_256a)
SYM_FUNC_ALIAS_LOCAL(_key_expansion_128, _key_expansion_256a)
SYM_FUNC_START_LOCAL(_key_expansion_192a)
pshufd $0b01010101, %xmm1, %xmm1
shufps $0b00010000, %xmm0, %xmm4
pxor %xmm4, %xmm0
shufps $0b10001100, %xmm0, %xmm4
pxor %xmm4, %xmm0
pxor %xmm1, %xmm0
Annotation
- Immediate include surface: `linux/linkage.h`, `linux/objtool.h`, `asm/frame.h`.
- Atlas domain: Architecture Layer / arch/x86.
- Implementation status: atlas-only.
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.