Differential D14633 Diff 40793 sys/i386/include/asmacros.h

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sys/i386/include/asmacros.h

				/* -- mode: asm -- */
	/*-			/*-
	* SPDX-License-Identifier: BSD-3-Clause			* SPDX-License-Identifier: BSD-3-Clause
	*			*
	* Copyright (c) 1993 The Regents of the University of California.			* Copyright (c) 1993 The Regents of the University of California.
	* All rights reserved.			* All rights reserved.
	*			*
	* Redistribution and use in source and binary forms, with or without			* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions			* modification, are permitted provided that the following conditions
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	#define ENTRY(name) GEN_ENTRY(name)			#define ENTRY(name) GEN_ENTRY(name)
	#define FAKE_MCOUNT(caller)			#define FAKE_MCOUNT(caller)
	#define MCOUNT			#define MCOUNT
	#define MCOUNT_LABEL(name)			#define MCOUNT_LABEL(name)
	#define MEXITCOUNT			#define MEXITCOUNT
	#endif /* GPROF */			#endif /* GPROF */

	#ifdef LOCORE			#ifdef LOCORE

				#define GSEL_KPL 0x0020 /* GSEL(GCODE_SEL, SEL_KPL) */
				#define SEL_RPL_MASK 0x0003

	/*			/*
	* Convenience macro for declaring interrupt entry points.			* Convenience macro for declaring interrupt entry points.
	*/			*/
	#define IDTVEC(name) ALIGN_TEXT; .globl __CONCAT(X,name); \			#define IDTVEC(name) ALIGN_TEXT; .globl __CONCAT(X,name); \
	.type __CONCAT(X,name),@function; __CONCAT(X,name):			.type __CONCAT(X,name),@function; __CONCAT(X,name):

	/*			/*
	* Macros to create and destroy a trap frame.			* Macros to create and destroy a trap frame.
	*/			*/
	#define PUSH_FRAME \			.macro PUSH_FRAME2
	pushl $0 ; /* dummy error code */ \			pushal
	pushl $0 ; /* dummy trap type */ \			pushl $0
	pushal ; /* 8 ints */ \			movw %ds,(%esp)
	pushl $0 ; /* save data and extra segments ... */ \			pushl $0
	movw %ds,(%esp) ; \			movw %es,(%esp)
	pushl $0 ; \			pushl $0
	movw %es,(%esp) ; \
	pushl $0 ; \
	movw %fs,(%esp)			movw %fs,(%esp)
				.endm

				.macro PUSH_FRAME
				pushl $0 /* dummy error code */
				pushl $0 /* dummy trap type */
				PUSH_FRAME2
				.endm

	/*			/*
	* Access per-CPU data.			* Access per-CPU data.
	*/			*/
	#define PCPU(member) %fs:PC_ ## member			#define PCPU(member) %fs:PC_ ## member

	#define PCPU_ADDR(member, reg) \			#define PCPU_ADDR(member, reg) \
	movl %fs:PC_PRVSPACE, reg ; \			movl %fs:PC_PRVSPACE, reg ; \
	addl $PC_ ## member, reg			addl $PC_ ## member, reg

	/*			/*
	* Setup the kernel segment registers.			* Setup the kernel segment registers.
	*/			*/
	#define SET_KERNEL_SREGS \			.macro SET_KERNEL_SREGS
	movl $KDSEL, %eax ; /* reload with kernel's data segment */ \			movl $KDSEL, %eax /* reload with kernel's data segment */
	movl %eax, %ds ; \			movl %eax, %ds
	movl %eax, %es ; \			movl %eax, %es
	movl $KPSEL, %eax ; /* reload with per-CPU data segment */ \			movl $KPSEL, %eax /* reload with per-CPU data segment */
	movl %eax, %fs			movl %eax, %fs
				.endm

				.macro NMOVE_STACKS
				movl PCPU(KESP0), %edx
				movl $TF_SZ, %ecx
				testl $PSL_VM, TF_EFLAGS(%esp)
				jz 1001f
				addl $(4*4), %ecx
				1001: subl %ecx, %edx
				movl %edx, %edi
				movl %esp, %esi
				rep; movsb
				movl %edx, %esp
				.endm

				.macro MOVE_STACKS
				call 1000f
				1000: popl %eax
				movl (tramp_idleptd - 1000b)(%eax), %eax
				movl %eax, %cr3
				NMOVE_STACKS
				.endm

				.macro KENTER
				testl $PSL_VM, TF_EFLAGS(%esp)
				jnz 2f
				testb $SEL_RPL_MASK, TF_CS(%esp)
				jz 2f
				1: MOVE_STACKS
				2:
				.endm

	#endif /* LOCORE */			#endif /* LOCORE */

	#ifdef __STDC__			#ifdef __STDC__
	#define ELFNOTE(name, type, desctype, descdata...) \			#define ELFNOTE(name, type, desctype, descdata...) \
	.pushsection .note.name ; \			.pushsection .note.name ; \
	.align 4 ; \			.align 4 ; \
	.long 2f - 1f /* namesz */ ; \			.long 2f - 1f /* namesz */ ; \
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