arch/mips/include/asm/asm-eva.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/asm-eva.h

File Facts

System: Linux kernel
Corpus path: arch/mips/include/asm/asm-eva.h
Extension: .h
Size: 7346 bytes
Lines: 191
Domain: Architecture Layer
Bucket: arch/mips
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.

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 __ASM_ASM_EVA_H
#define __ASM_ASM_EVA_H

#ifndef __ASSEMBLER__

/* Kernel variants */

#define kernel_cache(op, base)		"cache " op ", " base "\n"
#define kernel_pref(hint, base)		"pref " hint ", " base "\n"
#define kernel_ll(reg, addr)		"ll " reg ", " addr "\n"
#define kernel_sc(reg, addr)		"sc " reg ", " addr "\n"
#define kernel_lw(reg, addr)		"lw " reg ", " addr "\n"
#define kernel_lwl(reg, addr)		"lwl " reg ", " addr "\n"
#define kernel_lwr(reg, addr)		"lwr " reg ", " addr "\n"
#define kernel_lh(reg, addr)		"lh " reg ", " addr "\n"
#define kernel_lb(reg, addr)		"lb " reg ", " addr "\n"
#define kernel_lbu(reg, addr)		"lbu " reg ", " addr "\n"
#define kernel_sw(reg, addr)		"sw " reg ", " addr "\n"
#define kernel_swl(reg, addr)		"swl " reg ", " addr "\n"
#define kernel_swr(reg, addr)		"swr " reg ", " addr "\n"
#define kernel_sh(reg, addr)		"sh " reg ", " addr "\n"
#define kernel_sb(reg, addr)		"sb " reg ", " addr "\n"

#ifdef CONFIG_32BIT
/*
 * No 'sd' or 'ld' instructions in 32-bit but the code will
 * do the correct thing
 */
#define kernel_sd(reg, addr)		user_sw(reg, addr)
#define kernel_ld(reg, addr)		user_lw(reg, addr)
#else
#define kernel_sd(reg, addr)		"sd " reg", " addr "\n"
#define kernel_ld(reg, addr)		"ld " reg", " addr "\n"
#endif /* CONFIG_32BIT */

#ifdef CONFIG_EVA

#define __BUILD_EVA_INSN(insn, reg, addr)				\
				"	.set	push\n"			\
				"	.set	mips0\n"		\
				"	.set	eva\n"			\
				"	"insn" "reg", "addr "\n"	\
				"	.set	pop\n"

#define user_cache(op, base)		__BUILD_EVA_INSN("cachee", op, base)
#define user_pref(hint, base)		__BUILD_EVA_INSN("prefe", hint, base)
#define user_ll(reg, addr)		__BUILD_EVA_INSN("lle", reg, addr)
#define user_sc(reg, addr)		__BUILD_EVA_INSN("sce", reg, addr)
#define user_lw(reg, addr)		__BUILD_EVA_INSN("lwe", reg, addr)
#define user_lwl(reg, addr)		__BUILD_EVA_INSN("lwle", reg, addr)
#define user_lwr(reg, addr)		__BUILD_EVA_INSN("lwre", reg, addr)
#define user_lh(reg, addr)		__BUILD_EVA_INSN("lhe", reg, addr)
#define user_lb(reg, addr)		__BUILD_EVA_INSN("lbe", reg, addr)
#define user_lbu(reg, addr)		__BUILD_EVA_INSN("lbue", reg, addr)
/* No 64-bit EVA instruction for loading double words */
#define user_ld(reg, addr)		user_lw(reg, addr)
#define user_sw(reg, addr)		__BUILD_EVA_INSN("swe", reg, addr)
#define user_swl(reg, addr)		__BUILD_EVA_INSN("swle", reg, addr)
#define user_swr(reg, addr)		__BUILD_EVA_INSN("swre", reg, addr)
#define user_sh(reg, addr)		__BUILD_EVA_INSN("she", reg, addr)
#define user_sb(reg, addr)		__BUILD_EVA_INSN("sbe", reg, addr)
/* No 64-bit EVA instruction for storing double words */
#define user_sd(reg, addr)		user_sw(reg, addr)

#else

#define user_cache(op, base)		kernel_cache(op, base)
#define user_pref(hint, base)		kernel_pref(hint, base)
#define user_ll(reg, addr)		kernel_ll(reg, addr)
#define user_sc(reg, addr)		kernel_sc(reg, addr)
#define user_lw(reg, addr)		kernel_lw(reg, addr)
#define user_lwl(reg, addr)		kernel_lwl(reg, addr)
#define user_lwr(reg, addr)		kernel_lwr(reg, addr)
#define user_lh(reg, addr)		kernel_lh(reg, addr)
#define user_lb(reg, addr)		kernel_lb(reg, addr)
#define user_lbu(reg, addr)		kernel_lbu(reg, addr)
#define user_sw(reg, addr)		kernel_sw(reg, addr)
#define user_swl(reg, addr)		kernel_swl(reg, addr)
#define user_swr(reg, addr)		kernel_swr(reg, addr)
#define user_sh(reg, addr)		kernel_sh(reg, addr)
#define user_sb(reg, addr)		kernel_sb(reg, addr)

#ifdef CONFIG_32BIT
#define user_sd(reg, addr)		kernel_sw(reg, addr)
#define user_ld(reg, addr)		kernel_lw(reg, addr)
#else
#define user_sd(reg, addr)		kernel_sd(reg, addr)
#define user_ld(reg, addr)		kernel_ld(reg, addr)
#endif /* CONFIG_32BIT */

Annotation

Atlas domain: Architecture Layer / arch/mips.
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.