[mirror_edk2.git] / StdLib / Include / X64 / machine / asm.h

/*	$NetBSD: asm.h,v 1.6 2006/09/05 19:00:42 ad Exp $	*/\r
\r
/*-\r
 * Copyright (c) 1990 The Regents of the University of California.\r
 * All rights reserved.\r
 *\r
 * This code is derived from software contributed to Berkeley by\r
 * William Jolitz.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * 3. Neither the name of the University nor the names of its contributors\r
 *    may be used to endorse or promote products derived from this software\r
 *    without specific prior written permission.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
 *\r
 *	@(#)asm.h	5.5 (Berkeley) 5/7/91\r
 */\r
\r
#ifndef _AMD64_ASM_H_\r
#define _AMD64_ASM_H_\r
\r
#ifdef PIC\r
#define PIC_PLT(x)	x@PLT\r
#define PIC_GOT(x)	x@GOTPCREL(%rip)\r
#else\r
#define PIC_PLT(x)	x\r
#define PIC_GOT(x)	x\r
#endif\r
\r
# define _C_LABEL(x)	x\r
#define	_ASM_LABEL(x)	x\r
\r
#define CVAROFF(x,y)		(_C_LABEL(x)+y)(%rip)\r
\r
#ifdef __STDC__\r
# define __CONCAT(x,y)	x ## y\r
# define __STRING(x)	#x\r
#else\r
# define __CONCAT(x,y)	x/**/y\r
# define __STRING(x)	"x"\r
#endif\r
\r
/* let kernels and others override entrypoint alignment */\r
#ifndef _ALIGN_TEXT\r
#define _ALIGN_TEXT .align 4\r
#endif\r
\r
#define _ENTRY(x) \\r
	.text; _ALIGN_TEXT; .globl x; .type x,@function; x:\r
\r
#ifdef _KERNEL\r
/* XXX Can't use __CONCAT() here, as it would be evaluated incorrectly. */\r
#ifdef __STDC__\r
#define	IDTVEC(name) \\r
	ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name:\r
#else \r
#define	IDTVEC(name) \\r
	ALIGN_TEXT; .globl X/**/name; .type X/**/name,@function; X/**/name:\r
#endif /* __STDC__ */ \r
#endif /* _KERNEL */\r
\r
#ifdef __STDC__\r
#define CPUVAR(off)	%gs:CPU_INFO_ ## off\r
#else\r
#define CPUVAR(off)     %gs:CPU_INFO_/**/off\r
#endif\r
\r
\r
#ifdef GPROF\r
# define _PROF_PROLOGUE	\\r
	pushq %rbp; leaq (%rsp),%rbp; call PIC_PLT(__mcount); popq %rbp\r
#else\r
# define _PROF_PROLOGUE\r
#endif\r
\r
#define	ENTRY(y)	_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE\r
#define	NENTRY(y)	_ENTRY(_C_LABEL(y))\r
#define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE\r
\r
#define	ASMSTR		.asciz\r
\r
#define RCSID(x)	.text; .asciz x\r
\r
#define	WEAK_ALIAS(alias,sym)						\\r
	.weak alias;							\\r
	alias = sym\r
\r
/*\r
 * STRONG_ALIAS: create a strong alias.\r
 */\r
#define STRONG_ALIAS(alias,sym)						\\r
	.globl alias;							\\r
	alias = sym\r
\r
/* XXXfvdl do not use stabs here */\r
#ifdef __STDC__\r
#define	WARN_REFERENCES(sym,msg)					\\r
	.stabs msg ## ,30,0,0,0 ;					\\r
	.stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0\r
#else\r
#define	WARN_REFERENCES(sym,msg)					\\r
	.stabs msg,30,0,0,0 ;						\\r
	.stabs __STRING(sym),1,0,0,0\r
#endif /* __STDC__ */\r
\r
/*\r
 * Assembley equivalent of spllower().  Label contains the label to jump to\r
 * if we need to fire off pending interrupts (e.g. _C_LABEL(Xspllower)).\r
 *\r
 * On entry %rcx = new SPL.\r
 */\r
#define	SPLLOWER(label)						\\r
	movq		CPUVAR(SELF), %r9 ;			\\r
	cmpl		CPU_INFO_ILEVEL(%r9), %ecx ;		\\r
	jae		99f ;					\\r
	movl		CPU_INFO_IUNMASK(%r9,%rcx,4), %edi ;	\\r
	pushfq		;					\\r
	popq		%rax ;					\\r
	cli		;					\\r
	testl		CPU_INFO_IPENDING(%r9), %edi ;		\\r
	movq		%rcx, %rdi ;				\\r
	jnz		label ;					\\r
	movl		%ecx, CPU_INFO_ILEVEL(%r9) ;		\\r
	pushq		%rax ;					\\r
	popfq		;					\\r
99:\r
\r
#endif /* !_AMD64_ASM_H_ */\r
Commit	Line	Data
2aa62f2b	1	/* $NetBSD: asm.h,v 1.6 2006/09/05 19:00:42 ad Exp $ */\r
	2	\r
	3	/*-\r
	4	* Copyright (c) 1990 The Regents of the University of California.\r
	5	* All rights reserved.\r
	6	*\r
	7	* This code is derived from software contributed to Berkeley by\r
	8	* William Jolitz.\r
	9	*\r
	10	* Redistribution and use in source and binary forms, with or without\r
	11	* modification, are permitted provided that the following conditions\r
	12	* are met:\r
	13	* 1. Redistributions of source code must retain the above copyright\r
	14	* notice, this list of conditions and the following disclaimer.\r
	15	* 2. Redistributions in binary form must reproduce the above copyright\r
	16	* notice, this list of conditions and the following disclaimer in the\r
	17	* documentation and/or other materials provided with the distribution.\r
	18	* 3. Neither the name of the University nor the names of its contributors\r
	19	* may be used to endorse or promote products derived from this software\r
	20	* without specific prior written permission.\r
	21	*\r
	22	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
	23	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
	24	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
	25	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
	26	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
	27	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
	28	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
	29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
	30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
	31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
	32	* SUCH DAMAGE.\r
	33	*\r
	34	* @(#)asm.h 5.5 (Berkeley) 5/7/91\r
	35	*/\r
	36	\r
	37	#ifndef _AMD64_ASM_H_\r
	38	#define _AMD64_ASM_H_\r
	39	\r
	40	#ifdef PIC\r
	41	#define PIC_PLT(x) x@PLT\r
	42	#define PIC_GOT(x) x@GOTPCREL(%rip)\r
	43	#else\r
	44	#define PIC_PLT(x) x\r
	45	#define PIC_GOT(x) x\r
	46	#endif\r
	47	\r
	48	# define _C_LABEL(x) x\r
	49	#define _ASM_LABEL(x) x\r
	50	\r
	51	#define CVAROFF(x,y) (_C_LABEL(x)+y)(%rip)\r
	52	\r
	53	#ifdef __STDC__\r
	54	# define __CONCAT(x,y) x ## y\r
	55	# define __STRING(x) #x\r
	56	#else\r
	57	# define __CONCAT(x,y) x/**/y\r
	58	# define __STRING(x) "x"\r
	59	#endif\r
	60	\r
	61	/* let kernels and others override entrypoint alignment */\r
	62	#ifndef _ALIGN_TEXT\r
	63	#define _ALIGN_TEXT .align 4\r
	64	#endif\r
65	\r
66	#define _ENTRY(x) \\r
67	.text; _ALIGN_TEXT; .globl x; .type x,@function; x:\r
68	\r
69	#ifdef _KERNEL\r
70	/* XXX Can't use __CONCAT() here, as it would be evaluated incorrectly. */\r
71	#ifdef __STDC__\r
72	#define IDTVEC(name) \\r
73	ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name:\r
74	#else \r
75	#define IDTVEC(name) \\r
76	ALIGN_TEXT; .globl X//name; .type X//name,@function; X/**/name:\r
77	#endif /* __STDC__ */ \r
78	#endif /* _KERNEL */\r
79	\r
80	#ifdef __STDC__\r
81	#define CPUVAR(off) %gs:CPU_INFO_ ## off\r
82	#else\r
83	#define CPUVAR(off) %gs:CPU_INFO_/**/off\r
84	#endif\r
85	\r
86	\r
87	#ifdef GPROF\r
88	# define _PROF_PROLOGUE \\r
89	pushq %rbp; leaq (%rsp),%rbp; call PIC_PLT(__mcount); popq %rbp\r
90	#else\r
91	# define _PROF_PROLOGUE\r
92	#endif\r
93	\r
94	#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE\r
95	#define NENTRY(y) _ENTRY(_C_LABEL(y))\r
96	#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE\r
97	\r
98	#define ASMSTR .asciz\r
99	\r
100	#define RCSID(x) .text; .asciz x\r
101	\r
102	#define WEAK_ALIAS(alias,sym) \\r
103	.weak alias; \\r
104	alias = sym\r
105	\r
106	/*\r
107	* STRONG_ALIAS: create a strong alias.\r
108	*/\r
109	#define STRONG_ALIAS(alias,sym) \\r
110	.globl alias; \\r
111	alias = sym\r
112	\r
113	/* XXXfvdl do not use stabs here */\r
114	#ifdef __STDC__\r
115	#define WARN_REFERENCES(sym,msg) \\r
116	.stabs msg ## ,30,0,0,0 ; \\r
117	.stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0\r
118	#else\r
119	#define WARN_REFERENCES(sym,msg) \\r
120	.stabs msg,30,0,0,0 ; \\r
121	.stabs __STRING(sym),1,0,0,0\r
122	#endif /* __STDC__ */\r
123	\r
124	/*\r
125	* Assembley equivalent of spllower(). Label contains the label to jump to\r
126	* if we need to fire off pending interrupts (e.g. _C_LABEL(Xspllower)).\r
127	*\r
128	* On entry %rcx = new SPL.\r
129	*/\r
130	#define SPLLOWER(label) \\r
131	movq CPUVAR(SELF), %r9 ; \\r
132	cmpl CPU_INFO_ILEVEL(%r9), %ecx ; \\r
133	jae 99f ; \\r
134	movl CPU_INFO_IUNMASK(%r9,%rcx,4), %edi ; \\r
135	pushfq ; \\r
136	popq %rax ; \\r
137	cli ; \\r
138	testl CPU_INFO_IPENDING(%r9), %edi ; \\r
139	movq %rcx, %rdi ; \\r
140	jnz label ; \\r
141	movl %ecx, CPU_INFO_ILEVEL(%r9) ; \\r
142	pushq %rax ; \\r
143	popfq ; \\r
144	99:\r
145	\r
146	#endif /* !_AMD64_ASM_H_ */\r