common/C/libm.h

	libm.h revision 25c28e83beb90e7c80452a7c818c5e6f73a07dc8
/*
 * 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 2011 Nexenta Systems, Inc.  All rights reserved.
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _LIBM_H
#define _LIBM_H

#include <sys/isa_defs.h>

#ifdef _ASM
/* BEGIN CSTYLED */

/*
 * Disable amd64 assembly code profiling for now.
 */
#if defined(__amd64)
#undef PROF
#endif

#include <sys/asm_linkage.h>

#define NAME(x) x
#define TEXT    .section    ".text"
#define DATA    .section    ".data"
#define RO_DATA .section    ".rodata"
#define IDENT(x)    .ident  x

#if defined(__sparc)

#define LIBM_ANSI_PRAGMA_WEAK(sym,stype) \
    .weak sym; \
    .type sym,#stype; \
sym = __/**/sym

#ifndef SET_FILE
#define SET_FILE(x) \
    .file   x
#endif  /* !defined(SET_FILE) */

#ifdef PIC
/*
 * One should *never* pass o7 to PIC_SETUP.
 */
#define PIC_SETUP(via) \
9:  call    8f; \
    sethi   %hi(NAME(_GLOBAL_OFFSET_TABLE_)-(9b-.)),%via; \
8:  or  %via,%lo(NAME(_GLOBAL_OFFSET_TABLE_)-(9b-.)),%via; \
    add %via,%o7,%via
/*
 * Must save/restore %o7 in leaf routines; may *not* use jmpl!
 */
#define PIC_LEAF_SETUP(via) \
    or  %g0,%o7,%g1; \
9:  call    8f; \
    sethi   %hi(NAME(_GLOBAL_OFFSET_TABLE_)-(9b-.)),%via; \
8:  or  %via,%lo(NAME(_GLOBAL_OFFSET_TABLE_)-(9b-.)),%via; \
    add %via,%o7,%via; \
    or  %g0,%g1,%o7
#ifdef __sparcv9
#define PIC_SET(via,sym,dst)    ldx [%via+sym],%dst
#else   /* defined(__sparcv9) */
#define PIC_SET(via,sym,dst)    ld  [%via+sym],%dst
#endif  /* defined(__sparcv9) */
#else   /* defined(PIC) */
#define PIC_SETUP(via)
#define PIC_LEAF_SETUP(via)
#ifdef __sparcv9
/*
 * g1 is used as scratch register in V9 mode
 */
#define PIC_SET(via,sym,dst)    setx    sym,%g1,%dst
#else   /* defined(__sparcv9) */
#define PIC_SET(via,sym,dst)    set sym,%dst
#endif  /* defined(__sparcv9) */
#endif  /* defined(PIC) */

/*
 * Workaround for 4337025: MCOUNT in asm_linkage.h does not support __sparcv9
 */
#if defined(PROF) && defined(__sparcv9)

#undef MCOUNT_SIZE
#undef MCOUNT

#if !defined(PIC)
#define MCOUNT_SIZE (9*4)   /* 9 instructions */
#define MCOUNT(x) \
    save    %sp, -SA(MINFRAME), %sp; \
    sethi   %hh(.L_/**/x/**/1), %o0; \
    sethi   %lm(.L_/**/x/**/1), %o1; \
    or  %o0, %hm(.L_/**/x/**/1), %o0; \
    or  %o1, %lo(.L_/**/x/**/1), %o1; \
    sllx    %o0, 32, %o0; \
    call    _mcount; \
    or  %o0, %o1, %o0; \
    restore; \
    .common .L_/**/x/**/1, 8, 8
#elif defined(PIC32)
#define MCOUNT_SIZE (10*4)  /* 10 instructions */
#define MCOUNT(x) \
    save    %sp,-SA(MINFRAME),%sp; \
1:  call    .+8; \
    sethi   %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)),%o0; \
    sethi   %hi(.L_/**/x/**/1),%o1; \
    add %o0,%lo(_GLOBAL_OFFSET_TABLE_-(1b-.)),%o0; \
    add %o1,%lo(.L_/**/x/**/1),%o1; \
    add %o0,%o7,%o0; \
    call    _mcount; \
    ldx [%o0+%o1],%o0; \
    restore; \
    .common .L_/**/x/**/1,8,8
#else   /* PIC13 */
#define MCOUNT_SIZE (8*4)   /* 8 instructions */
#define MCOUNT(x) \
    save    %sp,-SA(MINFRAME),%sp; \
1:  call    .+8; \
    sethi   %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)),%o0; \
    add %o0,%lo(_GLOBAL_OFFSET_TABLE_-(1b-.)),%o0; \
    add %o0,%o7,%o0; \
    call    _mcount; \
    ldx [%o0+%lo(.L_/**/x/**/1)],%o0; \
    restore; \
    .common .L_/**/x/**/1,8,8
#endif  /* !defined(PIC) */
#endif /* defined(PROF) && defined(__sparcv9) */

#elif defined(__x86)

#define LIBM_ANSI_PRAGMA_WEAK(sym,stype) \
    .weak sym; \
    .type sym,@stype; \
sym = __/**/sym

#ifdef PIC
#if defined(__amd64)
#define PIC_SETUP(x)
#define PIC_WRAPUP
#define PIC_F(x)    x@PLT
#define PIC_G(x)    x@GOTPCREL(%rip)
#define PIC_L(x)    x(%rip)
#define PIC_G_LOAD(insn,sym,dst) \
    movq    PIC_G(sym),%dst; \
    insn    (%dst),%dst
#else
#define PIC_SETUP(label) \
    pushl   %ebx; \
    call    .label; \
.label: popl    %ebx; \
    addl    $_GLOBAL_OFFSET_TABLE_+[.-.label],%ebx
#define PIC_WRAPUP  popl    %ebx
#define PIC_F(x)    x@PLT
#define PIC_G(x)    x@GOT(%ebx)
#define PIC_L(x)    x@GOTOFF(%ebx)
#define PIC_G_LOAD(insn,sym,dst) \
    mov PIC_G(sym),%dst; \
    insn    (%dst),%dst
#endif
#else   /* defined(PIC) */
#define PIC_SETUP(x)
#define PIC_WRAPUP
#define PIC_F(x)    x
#define PIC_G(x)    x
#define PIC_L(x)    x
#define PIC_G_LOAD(insn,sym,dst)    insn    sym,%dst
#endif  /* defined(PIC) */

#else
#error Unknown architecture
#endif

/* END CSTYLED */
#else   /* defined(_ASM) */

#include "libm_macros.h"
#include "libm_synonyms.h"
#include "libm_protos.h"
#include "libm_inlines.h"
#include <math.h>
#if defined(__SUNPRO_C)
#include <sunmath.h>
#endif

#endif  /* defined(_ASM) */

#endif  /* _LIBM_H */