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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _IA32_SYS_ASM_LINKAGE_H
#define _IA32_SYS_ASM_LINKAGE_H
#include <sys/stack.h>
#include <sys/trap.h>
#if defined(__linux__) && defined(CONFIG_SLS)
#define RET ret; int3
#else
#define RET ret
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _ASM /* The remainder of this file is only for assembly files */
/*
* make annoying differences in assembler syntax go away
*/
/*
* D16 and A16 are used to insert instructions prefixes; the
* macros help the assembler code be slightly more portable.
*/
#if !defined(__GNUC_AS__)
/*
* /usr/ccs/bin/as prefixes are parsed as separate instructions
*/
#define D16 data16;
#define A16 addr16;
/*
* (There are some weird constructs in constant expressions)
*/
#define _CONST(const) [const]
#define _BITNOT(const) -1!_CONST(const)
#define _MUL(a, b) _CONST(a \* b)
#else
/*
* Why not use the 'data16' and 'addr16' prefixes .. well, the
* assembler doesn't quite believe in real mode, and thus argues with
* us about what we're trying to do.
*/
#define D16 .byte 0x66;
#define A16 .byte 0x67;
#define _CONST(const) (const)
#define _BITNOT(const) ~_CONST(const)
#define _MUL(a, b) _CONST(a * b)
#endif
/*
* C pointers are different sizes between i386 and amd64.
* These constants can be used to compute offsets into pointer arrays.
*/
#if defined(__amd64)
#define CLONGSHIFT 3
#define CLONGSIZE 8
#define CLONGMASK 7
#elif defined(__i386)
#define CLONGSHIFT 2
#define CLONGSIZE 4
#define CLONGMASK 3
#endif
/*
* Since we know we're either ILP32 or LP64 ..
*/
#define CPTRSHIFT CLONGSHIFT
#define CPTRSIZE CLONGSIZE
#define CPTRMASK CLONGMASK
#if CPTRSIZE != (1 << CPTRSHIFT) || CLONGSIZE != (1 << CLONGSHIFT)
#error "inconsistent shift constants"
#endif
#if CPTRMASK != (CPTRSIZE - 1) || CLONGMASK != (CLONGSIZE - 1)
#error "inconsistent mask constants"
#endif
#define ASM_ENTRY_ALIGN 16
/*
* SSE register alignment and save areas
*/
#define XMM_SIZE 16
#define XMM_ALIGN 16
/*
* ENTRY provides the standard procedure entry code and an easy way to
* insert the calls to mcount for profiling. ENTRY_NP is identical, but
* never calls mcount.
*/
#define ENTRY(x) \
.text; \
.align ASM_ENTRY_ALIGN; \
.globl x; \
.type x, @function; \
x: MCOUNT(x)
#define ENTRY_NP(x) \
.text; \
.align ASM_ENTRY_ALIGN; \
.globl x; \
.type x, @function; \
x:
/*
* ENTRY2 is identical to ENTRY but provides two labels for the entry point.
*/
#define ENTRY2(x, y) \
.text; \
.align ASM_ENTRY_ALIGN; \
.globl x, y; \
.type x, @function; \
.type y, @function; \
x:; \
y: MCOUNT(x)
#define ENTRY_NP2(x, y) \
.text; \
.align ASM_ENTRY_ALIGN; \
.globl x, y; \
.type x, @function; \
.type y, @function; \
x:; \
y:
/*
* SET_SIZE trails a function and set the size for the ELF symbol table.
*/
#define SET_SIZE(x) \
.size x, [.-x]
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _IA32_SYS_ASM_LINKAGE_H */
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