248 lines
5.2 KiB
C
248 lines
5.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_ASM_LINKAGE_H
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#define _SYS_ASM_LINKAGE_H
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#include <sys/stack.h>
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#include <sys/trap.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _ASM /* The remainder of this file is only for assembly files */
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/*
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* C pointers are different sizes between V8 and V9.
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* These constants can be used to compute offsets into pointer arrays.
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*/
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#ifdef __sparcv9
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#define CPTRSHIFT 3
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#define CLONGSHIFT 3
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#else
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#define CPTRSHIFT 2
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#define CLONGSHIFT 2
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#endif
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#define CPTRSIZE (1<<CPTRSHIFT)
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#define CLONGSIZE (1<<CLONGSHIFT)
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#define CPTRMASK (CPTRSIZE - 1)
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#define CLONGMASK (CLONGSIZE - 1)
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/*
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* Symbolic section definitions.
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*/
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#define RODATA ".rodata"
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/*
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* profiling causes defintions of the MCOUNT and RTMCOUNT
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* particular to the type
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*/
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#ifdef GPROF
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#define MCOUNT_SIZE (4*4) /* 4 instructions */
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#define MCOUNT(x) \
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save %sp, -SA(MINFRAME), %sp; \
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call _mcount; \
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nop; \
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restore;
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#endif /* GPROF */
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#ifdef PROF
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#if defined(__sparcv9)
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#define MCOUNT_SIZE (9*4) /* 9 instructions */
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#define MCOUNT(x) \
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save %sp, -SA(MINFRAME), %sp; \
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/* CSTYLED */ \
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sethi %hh(.L_/**/x/**/1), %o0; \
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/* CSTYLED */ \
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sethi %lm(.L_/**/x/**/1), %o1; \
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/* CSTYLED */ \
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or %o0, %hm(.L_/**/x/**/1), %o0; \
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/* CSTYLED */ \
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or %o1, %lo(.L_/**/x/**/1), %o1; \
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sllx %o0, 32, %o0; \
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call _mcount; \
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or %o0, %o1, %o0; \
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restore; \
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/* CSTYLED */ \
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.common .L_/**/x/**/1, 8, 8
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#else /* __sparcv9 */
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#define MCOUNT_SIZE (5*4) /* 5 instructions */
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#define MCOUNT(x) \
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save %sp, -SA(MINFRAME), %sp; \
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/* CSTYLED */ \
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sethi %hi(.L_/**/x/**/1), %o0; \
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call _mcount; \
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/* CSTYLED */ \
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or %o0, %lo(.L_/**/x/**/1), %o0; \
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restore; \
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/* CSTYLED */ \
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.common .L_/**/x/**/1, 4, 4
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#endif /* __sparcv9 */
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#endif /* PROF */
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/*
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* if we are not profiling, MCOUNT should be defined to nothing
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*/
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#if !defined(PROF) && !defined(GPROF)
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#define MCOUNT_SIZE 0 /* no instructions inserted */
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#define MCOUNT(x)
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#endif /* !defined(PROF) && !defined(GPROF) */
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#define RTMCOUNT(x) MCOUNT(x)
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/*
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* Macro to define weak symbol aliases. These are similar to the ANSI-C
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* #pragma weak name = _name
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* except a compiler can determine type. The assembler must be told. Hence,
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* the second parameter must be the type of the symbol (i.e.: function,...)
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*/
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#define ANSI_PRAGMA_WEAK(sym, stype) \
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.weak sym; \
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.type sym, #stype; \
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/* CSTYLED */ \
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sym = _/**/sym
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/*
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* Like ANSI_PRAGMA_WEAK(), but for unrelated names, as in:
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* #pragma weak sym1 = sym2
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*/
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#define ANSI_PRAGMA_WEAK2(sym1, sym2, stype) \
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.weak sym1; \
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.type sym1, #stype; \
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sym1 = sym2
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/*
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* ENTRY provides the standard procedure entry code and an easy way to
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* insert the calls to mcount for profiling. ENTRY_NP is identical, but
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* never calls mcount.
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*/
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#define ENTRY(x) \
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.section ".text"; \
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.align 4; \
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.global x; \
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.type x, #function; \
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x: MCOUNT(x)
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#define ENTRY_SIZE MCOUNT_SIZE
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#define ENTRY_NP(x) \
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.section ".text"; \
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.align 4; \
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.global x; \
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.type x, #function; \
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x:
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#define RTENTRY(x) \
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.section ".text"; \
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.align 4; \
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.global x; \
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.type x, #function; \
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x: RTMCOUNT(x)
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/*
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* ENTRY2 is identical to ENTRY but provides two labels for the entry point.
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*/
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#define ENTRY2(x, y) \
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.section ".text"; \
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.align 4; \
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.global x, y; \
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.type x, #function; \
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.type y, #function; \
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/* CSTYLED */ \
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x: ; \
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y: MCOUNT(x)
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#define ENTRY_NP2(x, y) \
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.section ".text"; \
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.align 4; \
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.global x, y; \
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.type x, #function; \
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.type y, #function; \
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/* CSTYLED */ \
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x: ; \
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y:
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/*
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* ALTENTRY provides for additional entry points.
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*/
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#define ALTENTRY(x) \
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.global x; \
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.type x, #function; \
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x:
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/*
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* DGDEF and DGDEF2 provide global data declarations.
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*
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* DGDEF provides a word aligned word of storage.
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*
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* DGDEF2 allocates "sz" bytes of storage with **NO** alignment. This
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* implies this macro is best used for byte arrays.
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*
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* DGDEF3 allocates "sz" bytes of storage with "algn" alignment.
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*/
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#define DGDEF2(name, sz) \
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.section ".data"; \
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.global name; \
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.type name, #object; \
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.size name, sz; \
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name:
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#define DGDEF3(name, sz, algn) \
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.section ".data"; \
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.align algn; \
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.global name; \
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.type name, #object; \
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.size name, sz; \
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name:
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#define DGDEF(name) DGDEF3(name, 4, 4)
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/*
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* SET_SIZE trails a function and set the size for the ELF symbol table.
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*/
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#define SET_SIZE(x) \
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.size x, (.-x)
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#endif /* _ASM */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ASM_LINKAGE_H */
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