91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/* $NetBSD: asm.h,v 1.22 2015/10/17 19:29:48 nakayama Exp $ */
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#include <sparc/asm.h>
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/*
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* Here are some defines to try to maintain consistency but still
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* support 32-and 64-bit compilers.
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*/
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#ifdef _LP64
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/* reg that points to base of data/text segment */
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#define BASEREG %g4
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/* first constants for storage allocation */
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#define LNGSZ 8
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#define LNGSHFT 3
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#define PTRSZ 8
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#define PTRSHFT 3
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#define POINTER .xword
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#define ULONG .xword
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/* Now instructions to load/store pointers & long ints */
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#define LDLNG ldx
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#define LDULNG ldx
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#define STLNG stx
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#define STULNG stx
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#define LDPTR ldx
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#define LDPTRA ldxa
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#define STPTR stx
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#define STPTRA stxa
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#define CASPTR casx
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#define CASPTRA casxa
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/* Now something to calculate the stack bias */
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#define STKB BIAS
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#define CCCR %xcc
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#else
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#define BASEREG %g0
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#define LNGSZ 4
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#define LNGSHFT 2
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#define PTRSZ 4
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#define PTRSHFT 2
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#define POINTER .word
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#define ULONG .word
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/* Instructions to load/store pointers & long ints */
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#define LDLNG ldsw
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#define LDULNG lduw
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#define STLNG stw
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#define STULNG stw
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#define LDPTR lduw
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#define LDPTRA lduwa
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#define STPTR stw
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#define STPTRA stwa
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#define CASPTR cas
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#define CASPTRA casa
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#define STKB 0
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#define CCCR %icc
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#endif
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#if defined(_KERNEL) || defined(_RUMPKERNEL)
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/* Give this real authority: reset the machine */
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#define NOTREACHED sir
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#else
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#define NOTREACHED
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#endif
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/* if < 32, copy by bytes, memcpy, kcopy, ... */
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#define BCOPY_SMALL 32
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/* use as needed to align things on longword boundaries */
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#define _ALIGN .align 8
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#define ICACHE_ALIGN .align 32
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/*
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* Combine 2 regs -- used to convert 64-bit ILP32
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* values to LP64.
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*/
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#define COMBINE(r1, r2, d) \
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clruw r2; \
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sllx r1, 32, d; \
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or d, r2, d
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/*
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* Split 64-bit value in 1 reg into high and low halves.
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* Used for ILP32 return values.
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*/
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#define SPLIT(s, r0, r1) \
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srl s, 0, r1; \
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srlx s, 32, r0
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#define SPLIT_RETL(s, r0, r1) \
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srl s, 0, r1; \
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retl; \
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srlx s, 32, r0
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