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- Move the macros for generating load and store instructions to asmacros.h

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so they can be shared by different source files and extend them by a
  variant for atomic compare and swap.
- Consistently use EMPTY.
This commit is contained in:
Marius Strobl 2010-12-29 14:14:50 +00:00
parent b5b0068b4b
commit 62cf53e2ea
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=216802
2 changed files with 24 additions and 24 deletions
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15
sys/sparc64/include/asmacros.h
View File

@ -33,7 +33,7 @@
/*
* Normal and alternate %g6 point to the pcb of the current process. Normal,
& alternate and interrupt %g7 point to per-cpu data.
* alternate and interrupt %g7 point to per-cpu data.
*/
#define PCB_REG %g6
#define PCPU_REG %g7
@ -134,6 +134,19 @@
#define EMPTY
/*
* Generate atomic compare and swap, load and store instructions for the
* corresponding width and ASI (or not). Note that we want to evaluate the
* macro args before concatenating, so that EMPTY really turns into nothing.
*/
#define _LD(w, a) ld ## w ## a
#define _ST(w, a) st ## w ## a
#define _CAS(w, a) cas ## w ## a
#define LD(w, a) _LD(w, a)
#define ST(w, a) _ST(w, a)
#define CAS(w, a) _CAS(w, a)
#endif /* LOCORE */
#endif /* _KERNEL */

33
sys/sparc64/sparc64/support.S
View File

@ -44,19 +44,6 @@ __FBSDID("$FreeBSD$");
.register %g3, #ignore
.register %g6, #ignore
#define E /* empty */
/*
* Generate load and store instructions for the corresponding width and asi
* (or not). Note that we want to evaluate the macro args before
* concatenating, so that E really turns into nothing.
*/
#define _LD(w, a) ld ## w ## a
#define _ST(w, a) st ## w ## a
#define LD(w, a) _LD(w, a)
#define ST(w, a) _ST(w, a)
/*
* Common code for copy routines.
*
@ -233,7 +220,7 @@ END(ascopy)
*/
ENTRY(ascopyfrom)
wr %o0, 0, %asi
_MEMCPY(%o2, %o1, %o3, E, E, a, %asi)
_MEMCPY(%o2, %o1, %o3, EMPTY, EMPTY, a, %asi)
retl
nop
END(ascopyfrom)
@ -243,7 +230,7 @@ END(ascopyfrom)
*/
ENTRY(ascopyto)
wr %o1, 0, %asi
_MEMCPY(%o2, %o0, %o3, a, %asi, E, E)
_MEMCPY(%o2, %o0, %o3, a, %asi, EMPTY, EMPTY)
retl
nop
END(ascopyto)
@ -307,7 +294,7 @@ ENTRY(bcopy)
/*
* Do the fast version.
*/
3: _MEMCPY(%o1, %o0, %o2, E, E, E, E)
3: _MEMCPY(%o1, %o0, %o2, EMPTY, EMPTY, EMPTY, EMPTY)
retl
nop
END(bcopy)
@ -316,7 +303,7 @@ END(bcopy)
* void bzero(void *b, size_t len)
*/
ENTRY(bzero)
_MEMSET(%o0, %g0, %o1, E, E)
_MEMSET(%o0, %g0, %o1, EMPTY, EMPTY)
retl
nop
END(bzero)
@ -325,7 +312,7 @@ END(bzero)
* int copystr(const void *src, void *dst, size_t len, size_t *done)
*/
ENTRY(copystr)
_COPYSTR(%o0, %o1, %o2, %o3, E, E, E, E)
_COPYSTR(%o0, %o1, %o2, %o3, EMPTY, EMPTY, EMPTY, EMPTY)
retl
mov %g1, %o0
END(copystr)
@ -335,7 +322,7 @@ END(copystr)
*/
ENTRY(memcpy)
mov %o0, %o3
_MEMCPY(%o3, %o1, %o2, E, E, E, E)
_MEMCPY(%o3, %o1, %o2, EMPTY, EMPTY, EMPTY, EMPTY)
retl
nop
END(memcpy)
@ -345,7 +332,7 @@ END(memcpy)
*/
ENTRY(memset)
mov %o0, %o3
_MEMSET(%o3, %o1, %o2, E, E)
_MEMSET(%o3, %o1, %o2, EMPTY, EMPTY)
retl
nop
END(memset)
@ -359,7 +346,7 @@ copy_nofault_begin:
*/
ENTRY(copyin)
wr %g0, ASI_AIUP, %asi
_MEMCPY(%o1, %o0, %o2, E, E, a, %asi)
_MEMCPY(%o1, %o0, %o2, EMPTY, EMPTY, a, %asi)
retl
clr %o0
END(copyin)
@ -369,7 +356,7 @@ END(copyin)
*/
ENTRY(copyinstr)
wr %g0, ASI_AIUP, %asi
_COPYSTR(%o0, %o1, %o2, %o3, a, %asi, E, E)
_COPYSTR(%o0, %o1, %o2, %o3, a, %asi, EMPTY, EMPTY)
retl
mov %g1, %o0
END(copyinstr)
@ -379,7 +366,7 @@ END(copyinstr)
*/
ENTRY(copyout)
wr %g0, ASI_AIUP, %asi
_MEMCPY(%o1, %o0, %o2, a, %asi, E, E)
_MEMCPY(%o1, %o0, %o2, a, %asi, EMPTY, EMPTY)
retl
clr %o0
END(copyout)