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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_IDTENTRY_H
#define _ASM_X86_IDTENTRY_H
/* Interrupts/Exceptions */
#include <asm/trapnr.h>
#ifndef __ASSEMBLY__
/**
* DECLARE_IDTENTRY - Declare functions for simple IDT entry points
* No error code pushed by hardware
* @vector: Vector number (ignored for C)
* @func: Function name of the entry point
*
* Declares three functions:
* - The ASM entry point: asm_##func
* - The XEN PV trap entry point: xen_##func (maybe unused)
* - The C handler called from the ASM entry point
*
* Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it
* declares the entry points for usage in C code. There is an ASM variant
* as well which is used to emit the entry stubs in entry_32/64.S.
*/
#define DECLARE_IDTENTRY(vector, func) \
asmlinkage void asm_##func(void); \
asmlinkage void xen_asm_##func(void); \
__visible void func(struct pt_regs *regs)
/**
* DEFINE_IDTENTRY - Emit code for simple IDT entry points
* @func: Function name of the entry point
*
* @func is called from ASM entry code with interrupts disabled.
*
* The macro is written so it acts as function definition. Append the
* body with a pair of curly brackets.
*
* idtentry_enter() contains common code which has to be invoked before
* arbitrary code in the body. idtentry_exit() contains common code
* which has to run before returning to the low level assembly code.
*/
#define DEFINE_IDTENTRY(func) \
static __always_inline void __##func(struct pt_regs *regs); \
\
__visible noinstr void func(struct pt_regs *regs) \
{ \
idtentry_enter(regs); \
instrumentation_begin(); \
__##func (regs); \
instrumentation_end(); \
idtentry_exit(regs); \
} \
\
static __always_inline void __##func(struct pt_regs *regs)
#else /* !__ASSEMBLY__ */
/*
* The ASM variants for DECLARE_IDTENTRY*() which emit the ASM entry stubs.
*/
#define DECLARE_IDTENTRY(vector, func) \
idtentry vector asm_##func func has_error_code=0 sane=1
#endif /* __ASSEMBLY__ */
#endif
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