src/vm/jit/x86_64/solaris/md-os.c

   1 /* src/vm/jit/x86_64/solaris/md-os.c - machine dependent x86_64 Solaris functions
   2
   3    Copyright (C) 2008, 2009
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 #include <assert.h>
  29 #include <stdint.h>
  30 #include <stdlib.h>
  31 #include <ucontext.h>
  32
  33 #include "vm/types.h"
  34
  35 #include "vm/jit/x86_64/codegen.h"
  36 #include "vm/jit/x86_64/md.h"
  37
  38 #include "threads/thread.hpp"
  39
  40 #include "vm/signallocal.hpp"
  41
  42 #include "vm/jit/asmpart.h"
  43 #include "vm/jit/executionstate.h"
  44 #include "vm/jit/trap.hpp"
  45
  46
  47 /**
  48  * Signal handler for hardware exceptions.
  49  */
  50 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
  51 {
  52         ucontext_t *_uc = (ucontext_t *) _p;
  53         mcontext_t *_mc = &_uc->uc_mcontext;
  54
  55         /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
  56            different to the ones in <ucontext.h>. */
  57
  58         void* xpc = (void *) _mc->gregs[REG_RIP];
  59
  60     // Handle the trap.
  61     trap_handle(TRAP_SIGSEGV, xpc, _p);
  62 }
  63
  64
  65 /**
  66  * Signal handler for hardware divide by zero (ArithmeticException)
  67  * check.
  68  */
  69 void md_signal_handler_sigfpe(int sig, siginfo_t *siginfo, void *_p)
  70 {
  71         ucontext_t *_uc = (ucontext_t *) _p;
  72         mcontext_t *_mc = &_uc->uc_mcontext;
  73
  74         /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
  75            different to the ones in <ucontext.h>. */
  76
  77         void* xpc = (void *) _mc->gregs[REG_RIP];
  78
  79     // Handle the trap.
  80     trap_handle(TRAP_SIGFPE, xpc, _p);
  81 }
  82
  83
  84 /**
  85  * Signal handler for hardware patcher traps (ud2).
  86  */
  87 void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p)
  88 {
  89         ucontext_t *_uc = (ucontext_t *) _p;
  90         mcontext_t *_mc = &_uc->uc_mcontext;
  91
  92         /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
  93            different to the ones in <ucontext.h>. */
  94
  95         void* xpc = (void *) _mc->gregs[REG_RIP];
  96
  97     // Handle the trap.
  98     trap_handle(TRAP_SIGILL, xpc, _p);
  99 }
 100
 101
 102 /* md_signal_handler_sigusr1 ***************************************************
 103
 104    Signal handler for suspending threads.
 105
 106 *******************************************************************************/
 107
 108 #if defined(ENABLE_THREADS) && defined(ENABLE_GC_CACAO)
 109 void md_signal_handler_sigusr1(int sig, siginfo_t *siginfo, void *_p)
 110 {
 111         ucontext_t *_uc;
 112         mcontext_t *_mc;
 113         u1         *pc;
 114         u1         *sp;
 115
 116         _uc = (ucontext_t *) _p;
 117         _mc = &_uc->uc_mcontext;
 118
 119         /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
 120            different to the ones in <ucontext.h>. */
 121
 122         /* get the PC and SP for this thread */
 123         pc = (u1 *) _mc->gregs[REG_RIP];
 124         sp = (u1 *) _mc->gregs[REG_RSP];
 125
 126         /* now suspend the current thread */
 127         threads_suspend_ack(pc, sp);
 128 }
 129 #endif
 130
 131
 132 /* md_signal_handler_sigusr2 ***************************************************
 133
 134    Signal handler for profiling sampling.
 135
 136 *******************************************************************************/
 137
 138 #if defined(ENABLE_THREADS)
 139 void md_signal_handler_sigusr2(int sig, siginfo_t *siginfo, void *_p)
 140 {
 141         threadobject *t;
 142         ucontext_t   *_uc;
 143         mcontext_t   *_mc;
 144         u1           *pc;
 145
 146         t = THREADOBJECT;
 147
 148         _uc = (ucontext_t *) _p;
 149         _mc = &_uc->uc_mcontext;
 150
 151         /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
 152            different to the ones in <ucontext.h>. */
 153
 154         pc = (u1 *) _mc->gregs[REG_RIP];
 155
 156         t->pc = pc;
 157 }
 158 #endif
 159
 160
 161 /* md_executionstate_read ******************************************************
 162
 163    Read the given context into an executionstate.
 164
 165 *******************************************************************************/
 166
 167 void md_executionstate_read(executionstate_t *es, void *context)
 168 {
 169         ucontext_t *_uc;
 170         mcontext_t *_mc;
 171         s4          i;
 172         s4          d;
 173
 174         _uc = (ucontext_t *) context;
 175         _mc = &_uc->uc_mcontext;
 176
 177         /* read special registers */
 178         es->pc = (u1 *) _mc->gregs[REG_RIP];
 179         es->sp = (u1 *) _mc->gregs[REG_RSP];
 180         es->pv = NULL;
 181
 182         /* read integer registers */
 183         for (i = 0; i < INT_REG_CNT; i++) {
 184                 switch (i) {
 185                 case 0:  /* REG_RAX */
 186                         d = REG_RAX;
 187                         break;
 188                 case 1:  /* REG_RCX */
 189                         d = REG_RCX;
 190                         break;
 191                 case 2:  /* REG_RDX */
 192                         d = REG_RDX;
 193                         break;
 194                 case 3:  /* REG_RBX */
 195                         d = REG_RBX;
 196                         break;
 197                 case 4:  /* REG_RSP */
 198                         d = REG_RSP;
 199                         break;
 200                 case 5:  /* REG_RBP */
 201                         d = REG_RBP;
 202                         break;
 203                 case 6:  /* REG_RSI */
 204                         d = REG_RSI;
 205                         break;
 206                 case 7:  /* REG_RDI */
 207                         d = REG_RDI;
 208                         break;
 209                 case 8:  /* REG_R8  == 7  */
 210                 case 9:  /* REG_R9  == 6  */
 211                 case 10: /* REG_R10 == 5  */
 212                 case 11: /* REG_R11 == 4  */
 213                 case 12: /* REG_R12 == 3  */
 214                 case 13: /* REG_R13 == 2  */
 215                 case 14: /* REG_R14 == 1  */
 216                 case 15: /* REG_R15 == 0  */
 217                         d = 15 - i;
 218                         break;
 219                 }
 220
 221                 es->intregs[i] = _mc->gregs[d];
 222         }
 223
 224         /* read float registers */
 225         for (i = 0; i < FLT_REG_CNT; i++)
 226                 es->fltregs[i] = 0xdeadbeefdeadbeefL;
 227 }
 228
 229
 230 /* md_executionstate_write *****************************************************
 231
 232    Write the given executionstate back to the context.
 233
 234 *******************************************************************************/
 235
 236 void md_executionstate_write(executionstate_t *es, void *context)
 237 {
 238         ucontext_t *_uc;
 239         mcontext_t *_mc;
 240         s4          i;
 241         s4          d;
 242
 243         _uc = (ucontext_t *) context;
 244         _mc = &_uc->uc_mcontext;
 245
 246         /* write integer registers */
 247         for (i = 0; i < INT_REG_CNT; i++) {
 248                 switch (i) {
 249                 case 0:  /* REG_RAX */
 250                         d = REG_RAX;
 251                         break;
 252                 case 1:  /* REG_RCX */
 253                         d = REG_RCX;
 254                         break;
 255                 case 2:  /* REG_RDX */
 256                         d = REG_RDX;
 257                         break;
 258                 case 3:  /* REG_RBX */
 259                         d = REG_RBX;
 260                         break;
 261                 case 4:  /* REG_RSP */
 262                         d = REG_RSP;
 263                         break;
 264                 case 5:  /* REG_RBP */
 265                         d = REG_RBP;
 266                         break;
 267                 case 6:  /* REG_RSI */
 268                         d = REG_RSI;
 269                         break;
 270                 case 7:  /* REG_RDI */
 271                         d = REG_RDI;
 272                         break;
 273                 case 8:  /* REG_R8  == 7  */
 274                 case 9:  /* REG_R9  == 6  */
 275                 case 10: /* REG_R10 == 5  */
 276                 case 11: /* REG_R11 == 4  */
 277                 case 12: /* REG_R12 == 3  */
 278                 case 13: /* REG_R13 == 2  */
 279                 case 14: /* REG_R14 == 1  */
 280                 case 15: /* REG_R15 == 0  */
 281                         d = 15 - i;
 282                         break;
 283                 }
 284
 285                 _mc->gregs[d] = es->intregs[i];
 286         }
 287
 288         /* write special registers */
 289         _mc->gregs[REG_RIP] = (ptrint) es->pc;
 290         _mc->gregs[REG_RSP] = (ptrint) es->sp;
 291 }
 292
 293
 294 /*
 295  * These are local overrides for various environment variables in Emacs.
 296  * Please do not remove this and leave it at the end of the file, where
 297  * Emacs will automagically detect them.
 298  * ---------------------------------------------------------------------
 299  * Local variables:
 300  * mode: c
 301  * indent-tabs-mode: t
 302  * c-basic-offset: 4
 303  * tab-width: 4
 304  * End:
 305  * vim:noexpandtab:sw=4:ts=4:
 306  */