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/* $NetBSD: locore.h,v 1.9 2015/10/17 19:29:48 nakayama Exp $ */
/*
* Copyright (c) 1996-2002 Eduardo Horvath
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
#undef CURLWP
#undef CPCB
#undef FPLWP
#define CURLWP (CPUINFO_VA + CI_CURLWP)
#define CPCB (CPUINFO_VA + CI_CPCB)
#define FPLWP (CPUINFO_VA + CI_FPLWP)
/* A few convenient abbreviations for trapframe fields. */
#define TF_G TF_GLOBAL
#define TF_O TF_OUT
#define TF_L TF_LOCAL
#define TF_I TF_IN
/* Let us use same syntax as C code */
#define Debugger() ta 1; nop
/*
* This macro will clear out a cache line before an explicit
* access to that location. It's mostly used to make certain
* loads bypassing the D$ do not get stale D$ data.
*
* It uses a register with the address to clear and a temporary
* which is destroyed.
*/
#ifdef DCACHE_BUG
#define DLFLUSH(a,t) \
andn a, 0x3f, t; \
stxa %g0, [ t ] ASI_DCACHE_TAG; \
membar #Sync
/* The following can be used if the pointer is 32-byte aligned */
#define DLFLUSH2(t) \
stxa %g0, [ t ] ASI_DCACHE_TAG; \
membar #Sync
#else
#define DLFLUSH(a,t)
#define DLFLUSH2(t)
#endif
/*
* A handy macro for maintaining instrumentation counters.
* Note that this clobbers %o0, %o1 and %o2. Normal usage is
* something like:
* foointr:
* TRAP_SETUP(...) ! makes %o registers safe
* INCR(_C_LABEL(cnt)+V_FOO) ! count a foo
*/
#define INCR(what) \
sethi %hi(what), %o0; \
or %o0, %lo(what), %o0; \
99: \
lduw [%o0], %o1; \
add %o1, 1, %o2; \
casa [%o0] ASI_P, %o1, %o2; \
cmp %o1, %o2; \
bne,pn %icc, 99b; \
nop
/*
* A couple of handy macros to save and restore globals to/from
* locals. Since udivrem uses several globals, and it's called
* from vsprintf, we need to do this before and after doing a printf.
*/
#define GLOBTOLOC \
mov %g1, %l1; \
mov %g2, %l2; \
mov %g3, %l3; \
mov %g4, %l4; \
mov %g5, %l5; \
mov %g6, %l6; \
mov %g7, %l7
#define LOCTOGLOB \
mov %l1, %g1; \
mov %l2, %g2; \
mov %l3, %g3; \
mov %l4, %g4; \
mov %l5, %g5; \
mov %l6, %g6; \
mov %l7, %g7
/* Load strings address into register; NOTE: hidden local label 99 */
#define LOAD_ASCIZ(reg, s) \
set 99f, reg ; \
.data ; \
99: .asciz s ; \
_ALIGN ; \
.text
/*
* Handy stack conversion macros.
* They correctly switch to requested stack type
* regardless of the current stack.
*/
#define TO_STACK64(size) \
save %sp, size, %sp; \
add %sp, -BIAS, %o0; /* Convert to 64-bits */ \
andcc %sp, 1, %g0; /* 64-bit stack? */ \
movz %icc, %o0, %sp
#define TO_STACK32(size) \
save %sp, size, %sp; \
add %sp, +BIAS, %o0; /* Convert to 32-bits */ \
andcc %sp, 1, %g0; /* 64-bit stack? */ \
movnz %icc, %o0, %sp
#ifdef _LP64
#define STACKFRAME(size) TO_STACK64(size)
#else
#define STACKFRAME(size) TO_STACK32(size)
#endif
/*
* Primitives
*/
#ifdef ENTRY
#undef ENTRY
#endif
#ifdef GPROF
.globl _mcount
#define ENTRY(x) \
.globl _C_LABEL(x); .type _C_LABEL(x),@function; \
_C_LABEL(x): ; \
.data; \
.align 8; \
0: .word 0; .word 0; \
.text; \
save %sp, -CC64FSZ, %sp; \
sethi %hi(0b), %o0; \
call _mcount; \
or %o0, %lo(0b), %o0; \
restore
#else
#define ENTRY(x) .globl _C_LABEL(x); .type _C_LABEL(x),@function; \
_C_LABEL(x):
#endif
#define ALTENTRY(x) .globl _C_LABEL(x); _C_LABEL(x):
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