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authorgreg@kroah.com <greg@kroah.com>2004-10-05 18:51:53 -0700
committerGreg KH <gregkh@suse.de>2005-04-26 21:37:02 -0700
commit60d1e263f0da2976938fa54efec88ab777a6b3c3 (patch)
tree94bfcc4279827a68f90f8b63c0d458ddc753c69b /klibc/include/arch/sparc/machine/asm.h
parenta0622777688ad84ef3d789e0171cfb0ca3dc21d2 (diff)
[PATCH] oops forgot to add the new klibc/include directory
Diffstat (limited to 'klibc/include/arch/sparc/machine/asm.h')
-rw-r--r--klibc/include/arch/sparc/machine/asm.h192
1 files changed, 192 insertions, 0 deletions
diff --git a/klibc/include/arch/sparc/machine/asm.h b/klibc/include/arch/sparc/machine/asm.h
new file mode 100644
index 0000000000..b622bd8cf1
--- /dev/null
+++ b/klibc/include/arch/sparc/machine/asm.h
@@ -0,0 +1,192 @@
+/* $NetBSD: asm.h,v 1.14 2002/07/20 08:37:30 mrg Exp $ */
+
+/*
+ * Copyright (c) 1994 Allen Briggs
+ * All rights reserved.
+ *
+ * Gleaned from locore.s and sun3 asm.h which had the following copyrights:
+ * locore.s:
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1982, 1990 The Regents of the University of California.
+ * sun3/include/asm.h:
+ * Copyright (c) 1993 Adam Glass
+ * Copyright (c) 1990 The Regents of the University of California.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ASM_H_
+#define _ASM_H_
+
+/* Pull in CCFSZ, CC64FSZ, and BIAS from frame.h */
+#ifndef _LOCORE
+#define _LOCORE
+#endif
+#include <machine/frame.h>
+
+#ifdef __ELF__
+#define _C_LABEL(name) name
+#else
+#ifdef __STDC__
+#define _C_LABEL(name) _ ## name
+#else
+#define _C_LABEL(name) _/**/name
+#endif
+#endif
+#define _ASM_LABEL(name) name
+
+#ifdef PIC
+/*
+ * PIC_PROLOGUE() is akin to the compiler generated function prologue for
+ * PIC code. It leaves the address of the Global Offset Table in DEST,
+ * clobbering register TMP in the process.
+ *
+ * We can use two code sequences. We can read the %pc or use the call
+ * instruction that saves the pc in %o7. Call requires the branch unit and
+ * IEU1, and clobbers %o7 which needs to be restored. This instruction
+ * sequence takes about 4 cycles due to instruction interdependence. Reading
+ * the pc takes 4 cycles to dispatch and is always dispatched alone. That
+ * sequence takes 7 cycles.
+ */
+#ifdef __arch64__
+#define PIC_PROLOGUE(dest,tmp) \
+ mov %o7, tmp; \
+ sethi %hi(_GLOBAL_OFFSET_TABLE_-4),dest; \
+ call 0f; \
+ or dest,%lo(_GLOBAL_OFFSET_TABLE_+4),dest; \
+0: \
+ add dest,%o7,dest; \
+ mov tmp, %o7
+#else
+#define PIC_PROLOGUE(dest,tmp) \
+ mov %o7,tmp; 3: call 4f; nop; 4: \
+ sethi %hi(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \
+ or dest,%lo(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \
+ add dest,%o7,dest; mov tmp,%o7
+#endif
+
+/*
+ * PICCY_SET() does the equivalent of a `set var, %dest' instruction in
+ * a PIC-like way, but without involving the Global Offset Table. This
+ * only works for VARs defined in the same file *and* in the text segment.
+ */
+#ifdef __arch64__
+#define PICCY_SET(var,dest,tmp) \
+ 3: rd %pc, tmp; add tmp,(var-3b),dest
+#else
+#define PICCY_SET(var,dest,tmp) \
+ mov %o7,tmp; 3: call 4f; nop; 4: \
+ add %o7,(var-3b),dest; mov tmp,%o7
+#endif
+#else
+#define PIC_PROLOGUE(dest,tmp)
+#define PICCY_OFFSET(var,dest,tmp)
+#endif
+
+#define FTYPE(x) .type x,@function
+#define OTYPE(x) .type x,@object
+
+#define _ENTRY(name) \
+ .align 4; .globl name; .proc 1; FTYPE(name); name:
+
+#ifdef GPROF
+/* see _MCOUNT_ENTRY in profile.h */
+#ifdef __ELF__
+#ifdef __arch64__
+#define _PROF_PROLOGUE \
+ .data; .align 8; 1: .uaword 0; .uaword 0; \
+ .text; save %sp,-CC64FSZ,%sp; sethi %hi(1b),%o0; call _mcount; \
+ or %o0,%lo(1b),%o0; restore
+#else
+#define _PROF_PROLOGUE \
+ .data; .align 4; 1: .long 0; \
+ .text; save %sp,-96,%sp; sethi %hi(1b),%o0; call _mcount; \
+ or %o0,%lo(1b),%o0; restore
+#endif
+#else
+#ifdef __arch64__
+#define _PROF_PROLOGUE \
+ .data; .align 8; 1: .uaword 0; .uaword 0; \
+ .text; save %sp,-CC64FSZ,%sp; sethi %hi(1b),%o0; call mcount; \
+ or %o0,%lo(1b),%o0; restore
+#else
+#define _PROF_PROLOGUE \
+ .data; .align 4; 1: .long 0; \
+ .text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \
+ or %o0,%lo(1b),%o0; restore
+#endif
+#endif
+#else
+#define _PROF_PROLOGUE
+#endif
+
+#define ENTRY(name) _ENTRY(_C_LABEL(name)); _PROF_PROLOGUE
+#define ENTRY_NOPROFILE(name) _ENTRY(_C_LABEL(name))
+#define ASENTRY(name) _ENTRY(_ASM_LABEL(name)); _PROF_PROLOGUE
+#define FUNC(name) ASENTRY(name)
+#define RODATA(name) .align 4; .text; .globl _C_LABEL(name); \
+ OTYPE(_C_LABEL(name)); _C_LABEL(name):
+
+
+#define ASMSTR .asciz
+
+#define RCSID(name) .asciz name
+
+#ifdef __ELF__
+#define WEAK_ALIAS(alias,sym) \
+ .weak alias; \
+ alias = sym
+#endif
+
+/*
+ * WARN_REFERENCES: create a warning if the specified symbol is referenced.
+ */
+#ifdef __ELF__
+#ifdef __STDC__
+#define WARN_REFERENCES(_sym,_msg) \
+ .section .gnu.warning. ## _sym ; .ascii _msg ; .text
+#else
+#define WARN_REFERENCES(_sym,_msg) \
+ .section .gnu.warning./**/_sym ; .ascii _msg ; .text
+#endif /* __STDC__ */
+#else
+#ifdef __STDC__
+#define __STRING(x) #x
+#define WARN_REFERENCES(sym,msg) \
+ .stabs msg ## ,30,0,0,0 ; \
+ .stabs __STRING(_ ## sym) ## ,1,0,0,0
+#else
+#define __STRING(x) "x"
+#define WARN_REFERENCES(sym,msg) \
+ .stabs msg,30,0,0,0 ; \
+ .stabs __STRING(_/**/sym),1,0,0,0
+#endif /* __STDC__ */
+#endif /* __ELF__ */
+
+#endif /* _ASM_H_ */