ab9678ac9d
if KERNEL is not defined. lib/msun/i387/*.S include asmacros.h to get the definitions of ENTRY(), etc. This is bogus since asmacros.h is only supposed to give definitions suitable for the kernel. The current definitions for the kernel almost worked but are missing the ".type" declarations. This caused the linker to print warnings about doubtful relocations for almost anything linked to libm[sun]. Uniformize name and use of idempotence identifier.
101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
/*-
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* Copyright (c) 1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: asmacros.h,v 1.4 1994/08/19 11:20:11 jkh Exp $
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*/
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#ifndef _MACHINE_ASMACROS_H_
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#define _MACHINE_ASMACROS_H_
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#ifdef KERNEL
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#define ALIGN_DATA .align 2 /* 4 byte alignment, zero filled */
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#define ALIGN_TEXT .align 2,0x90 /* 4-byte alignment, nop filled */
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#define SUPERALIGN_TEXT .align 4,0x90 /* 16-byte alignment (better for 486), nop filled */
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#define GEN_ENTRY(name) ALIGN_TEXT; .globl name; name:
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#define NON_GPROF_ENTRY(name) GEN_ENTRY(_/**/name)
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/* These three are place holders for future changes to the profiling code */
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#define MCOUNT_LABEL(name)
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#define MEXITCOUNT
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#define FAKE_MCOUNT(caller)
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#ifdef GPROF
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/*
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* ALTENTRY() must be before a corresponding ENTRY() so that it can jump
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* over the mcounting.
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*/
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#define ALTENTRY(name) GEN_ENTRY(_/**/name); MCOUNT; jmp 2f
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#define ENTRY(name) GEN_ENTRY(_/**/name); MCOUNT; 2:
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/*
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* The call to mcount supports the usual (bad) conventions. We allocate
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* some data and pass a pointer to it although the FreeBSD doesn't use
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* the data. We set up a frame before calling mcount because that is
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* the standard convention although it makes work for both mcount and
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* callers.
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*/
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#define MCOUNT .data; ALIGN_DATA; 1:; .long 0; .text; \
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pushl %ebp; movl %esp,%ebp; \
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movl $1b,%eax; call mcount; popl %ebp
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#else
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/*
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* ALTENTRY() has to align because it is before a corresponding ENTRY().
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* ENTRY() has to align to because there may be no ALTENTRY() before it.
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* If there is a previous ALTENTRY() then the alignment code is empty.
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*/
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#define ALTENTRY(name) GEN_ENTRY(_/**/name)
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#define ENTRY(name) GEN_ENTRY(_/**/name)
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#define MCOUNT
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#endif
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#ifdef DUMMY_NOPS /* this will break some older machines */
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#define FASTER_NOP
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#define NOP
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#else
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#define FASTER_NOP pushl %eax ; inb $0x84,%al ; popl %eax
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#define NOP pushl %eax ; inb $0x84,%al ; inb $0x84,%al ; popl %eax
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#endif
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#else /* !KERNEL */
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#include "/usr/src/lib/libc/i386/DEFS.h" /* XXX blech */
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#ifndef RCSID
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#define RCSID(a)
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#endif
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#endif /* KERNEL */
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#endif /* !_MACHINE_ASMACROS_H_ */
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