arch/loongarch/include/asm/fpregdef.h

Source file repositories/reference/linux-study-clean/arch/loongarch/include/asm/fpregdef.h

File Facts

System
Linux kernel
Corpus path
arch/loongarch/include/asm/fpregdef.h
Extension
.h
Size
1220 bytes
Lines
60
Domain
Architecture Layer
Bucket
arch/loongarch
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_FPREGDEF_H
#define _ASM_FPREGDEF_H

#define fa0	$f0	/* argument registers, fa0/fa1 reused as fv0/fv1 for return value */
#define fa1	$f1
#define fa2	$f2
#define fa3	$f3
#define fa4	$f4
#define fa5	$f5
#define fa6	$f6
#define fa7	$f7
#define ft0	$f8	/* caller saved */
#define ft1	$f9
#define ft2	$f10
#define ft3	$f11
#define ft4	$f12
#define ft5	$f13
#define ft6	$f14
#define ft7	$f15
#define ft8	$f16
#define ft9	$f17
#define ft10	$f18
#define ft11	$f19
#define ft12	$f20
#define ft13	$f21
#define ft14	$f22
#define ft15	$f23
#define fs0	$f24	/* callee saved */
#define fs1	$f25
#define fs2	$f26
#define fs3	$f27
#define fs4	$f28
#define fs5	$f29
#define fs6	$f30
#define fs7	$f31

#ifndef CONFIG_AS_HAS_FCSR_CLASS
/*
 * Current binutils expects *GPRs* at FCSR position for the FCSR
 * operation instructions, so define aliases for those used.
 */
#define fcsr0	$r0
#define fcsr1	$r1
#define fcsr2	$r2
#define fcsr3	$r3
#else
#define fcsr0	$fcsr0
#define fcsr1	$fcsr1
#define fcsr2	$fcsr2
#define fcsr3	$fcsr3
#endif

#endif /* _ASM_FPREGDEF_H */

Annotation

Implementation Notes