1 /* $NetBSD: locore.h,v 1.9 2015/10/17 19:29:48 nakayama Exp $ */ 2 3 /* 4 * Copyright (c) 1996-2002 Eduardo Horvath 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 */ 26 27 #undef CURLWP 28 #undef CPCB 29 #undef FPLWP 30 31 #define CURLWP (CPUINFO_VA + CI_CURLWP) 32 #define CPCB (CPUINFO_VA + CI_CPCB) 33 #define FPLWP (CPUINFO_VA + CI_FPLWP) 34 35 /* A few convenient abbreviations for trapframe fields. */ 36 #define TF_G TF_GLOBAL 37 #define TF_O TF_OUT 38 #define TF_L TF_LOCAL 39 #define TF_I TF_IN 40 41 /* Let us use same syntax as C code */ 42 #define Debugger() ta 1; nop 43 44 45 /* 46 * This macro will clear out a cache line before an explicit 47 * access to that location. It's mostly used to make certain 48 * loads bypassing the D$ do not get stale D$ data. 49 * 50 * It uses a register with the address to clear and a temporary 51 * which is destroyed. 52 */ 53 #ifdef DCACHE_BUG 54 #define DLFLUSH(a,t) \ 55 andn a, 0x3f, t; \ 56 stxa %g0, [ t ] ASI_DCACHE_TAG; \ 57 membar #Sync 58 /* The following can be used if the pointer is 32-byte aligned */ 59 #define DLFLUSH2(t) \ 60 stxa %g0, [ t ] ASI_DCACHE_TAG; \ 61 membar #Sync 62 #else 63 #define DLFLUSH(a,t) 64 #define DLFLUSH2(t) 65 #endif 66 67 68 /* 69 * A handy macro for maintaining instrumentation counters. 70 * Note that this clobbers %o0, %o1 and %o2. Normal usage is 71 * something like: 72 * foointr: 73 * TRAP_SETUP(...) ! makes %o registers safe 74 * INCR(_C_LABEL(cnt)+V_FOO) ! count a foo 75 */ 76 #define INCR(what) \ 77 sethi %hi(what), %o0; \ 78 or %o0, %lo(what), %o0; \ 79 99: \ 80 lduw [%o0], %o1; \ 81 add %o1, 1, %o2; \ 82 casa [%o0] ASI_P, %o1, %o2; \ 83 cmp %o1, %o2; \ 84 bne,pn %icc, 99b; \ 85 nop 86 87 /* 88 * A couple of handy macros to save and restore globals to/from 89 * locals. Since udivrem uses several globals, and it's called 90 * from vsprintf, we need to do this before and after doing a printf. 91 */ 92 #define GLOBTOLOC \ 93 mov %g1, %l1; \ 94 mov %g2, %l2; \ 95 mov %g3, %l3; \ 96 mov %g4, %l4; \ 97 mov %g5, %l5; \ 98 mov %g6, %l6; \ 99 mov %g7, %l7 100 101 #define LOCTOGLOB \ 102 mov %l1, %g1; \ 103 mov %l2, %g2; \ 104 mov %l3, %g3; \ 105 mov %l4, %g4; \ 106 mov %l5, %g5; \ 107 mov %l6, %g6; \ 108 mov %l7, %g7 109 110 /* Load strings address into register; NOTE: hidden local label 99 */ 111 #define LOAD_ASCIZ(reg, s) \ 112 set 99f, reg ; \ 113 .data ; \ 114 99: .asciz s ; \ 115 _ALIGN ; \ 116 .text 117 118 /* 119 * Handy stack conversion macros. 120 * They correctly switch to requested stack type 121 * regardless of the current stack. 122 */ 123 124 #define TO_STACK64(size) \ 125 save %sp, size, %sp; \ 126 add %sp, -BIAS, %o0; /* Convert to 64-bits */ \ 127 andcc %sp, 1, %g0; /* 64-bit stack? */ \ 128 movz %icc, %o0, %sp 129 130 #define TO_STACK32(size) \ 131 save %sp, size, %sp; \ 132 add %sp, +BIAS, %o0; /* Convert to 32-bits */ \ 133 andcc %sp, 1, %g0; /* 64-bit stack? */ \ 134 movnz %icc, %o0, %sp 135 136 #ifdef _LP64 137 #define STACKFRAME(size) TO_STACK64(size) 138 #else 139 #define STACKFRAME(size) TO_STACK32(size) 140 #endif 141 142 /* 143 * Primitives 144 */ 145 #ifdef ENTRY 146 #undef ENTRY 147 #endif 148 149 #ifdef GPROF 150 .globl _mcount 151 #define ENTRY(x) \ 152 .globl _C_LABEL(x); .type _C_LABEL(x),@function; \ 153 _C_LABEL(x): ; \ 154 .data; \ 155 .align 8; \ 156 0: .word 0; .word 0; \ 157 .text; \ 158 save %sp, -CC64FSZ, %sp; \ 159 sethi %hi(0b), %o0; \ 160 call _mcount; \ 161 or %o0, %lo(0b), %o0; \ 162 restore 163 #else 164 #define ENTRY(x) .globl _C_LABEL(x); .type _C_LABEL(x),@function; \ 165 _C_LABEL(x): 166 #endif 167 #define ALTENTRY(x) .globl _C_LABEL(x); _C_LABEL(x): 168 169 170