/* Support code for various pieces of CGEN simulators.
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/* Support code for various pieces of CGEN simulators.
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Copyright (C) 1996, 1997, 1998, 1999, 2007, 2008, 2009, 2010
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Copyright (C) 1996, 1997, 1998, 1999, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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Contributed by Cygnus Support.
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This file is part of GDB, the GNU debugger.
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This file is part of GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "bfd.h"
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#include "bfd.h"
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#include "sim-main.h"
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#include "sim-main.h"
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#include "dis-asm.h"
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#include "dis-asm.h"
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#define MEMOPS_DEFINE_INLINE
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#define MEMOPS_DEFINE_INLINE
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#include "cgen-mem.h"
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#include "cgen-mem.h"
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#define SEMOPS_DEFINE_INLINE
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#define SEMOPS_DEFINE_INLINE
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#include "cgen-ops.h"
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#include "cgen-ops.h"
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#undef min
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#undef min
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#define min(a,b) ((a) < (b) ? (a) : (b))
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#define min(a,b) ((a) < (b) ? (a) : (b))
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const char *mode_names[] = {
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const char *mode_names[] = {
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"VOID",
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"VOID",
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"BI",
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"BI",
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"QI",
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"QI",
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"HI",
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"HI",
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"SI",
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"SI",
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"DI",
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"DI",
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"UQI",
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"UQI",
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"UHI",
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"UHI",
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"USI",
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"USI",
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"UDI",
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"UDI",
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"SF",
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"SF",
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"DF",
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"DF",
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"XF",
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"XF",
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"TF",
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"TF",
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0, /* MODE_TARGET_MAX */
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0, /* MODE_TARGET_MAX */
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"INT",
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"INT",
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"UINT",
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"UINT",
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"PTR"
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"PTR"
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};
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};
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/* Opcode table for virtual insns used by the simulator. */
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/* Opcode table for virtual insns used by the simulator. */
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#define V CGEN_ATTR_MASK (CGEN_INSN_VIRTUAL)
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#define V CGEN_ATTR_MASK (CGEN_INSN_VIRTUAL)
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static const CGEN_IBASE virtual_insn_entries[] =
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static const CGEN_IBASE virtual_insn_entries[] =
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{
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{
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{
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{
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VIRTUAL_INSN_X_INVALID, "--invalid--", NULL, 0, { V, { 0 } }
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VIRTUAL_INSN_X_INVALID, "--invalid--", NULL, 0, { V, { 0 } }
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},
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},
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{
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{
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VIRTUAL_INSN_X_BEFORE, "--before--", NULL, 0, { V, { 0 } }
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VIRTUAL_INSN_X_BEFORE, "--before--", NULL, 0, { V, { 0 } }
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},
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},
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{
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{
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VIRTUAL_INSN_X_AFTER, "--after--", NULL, 0, { V, { 0 } }
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VIRTUAL_INSN_X_AFTER, "--after--", NULL, 0, { V, { 0 } }
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},
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},
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{
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{
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VIRTUAL_INSN_X_BEGIN, "--begin--", NULL, 0, { V, { 0 } }
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VIRTUAL_INSN_X_BEGIN, "--begin--", NULL, 0, { V, { 0 } }
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},
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},
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{
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{
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VIRTUAL_INSN_X_CHAIN, "--chain--", NULL, 0, { V, { 0 } }
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VIRTUAL_INSN_X_CHAIN, "--chain--", NULL, 0, { V, { 0 } }
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},
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},
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{
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{
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VIRTUAL_INSN_X_CTI_CHAIN, "--cti-chain--", NULL, 0, { V, { 0 } }
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VIRTUAL_INSN_X_CTI_CHAIN, "--cti-chain--", NULL, 0, { V, { 0 } }
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}
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}
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};
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};
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#undef V
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#undef V
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const CGEN_INSN cgen_virtual_insn_table[] =
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const CGEN_INSN cgen_virtual_insn_table[] =
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{
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{
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{ & virtual_insn_entries[0] },
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{ & virtual_insn_entries[0] },
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{ & virtual_insn_entries[1] },
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{ & virtual_insn_entries[1] },
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{ & virtual_insn_entries[2] },
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{ & virtual_insn_entries[2] },
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{ & virtual_insn_entries[3] },
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{ & virtual_insn_entries[3] },
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{ & virtual_insn_entries[4] },
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{ & virtual_insn_entries[4] },
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{ & virtual_insn_entries[5] }
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{ & virtual_insn_entries[5] }
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};
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};
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/* Initialize cgen things.
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/* Initialize cgen things.
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This is called after sim_post_argv_init. */
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This is called after sim_post_argv_init. */
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void
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void
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cgen_init (SIM_DESC sd)
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cgen_init (SIM_DESC sd)
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{
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{
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int i, c;
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int i, c;
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/* If no profiling or tracing has been enabled, run in fast mode. */
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/* If no profiling or tracing has been enabled, run in fast mode. */
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{
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{
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int run_fast_p = 1;
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int run_fast_p = 1;
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for (c = 0; c < MAX_NR_PROCESSORS; ++c)
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for (c = 0; c < MAX_NR_PROCESSORS; ++c)
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{
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{
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SIM_CPU *cpu = STATE_CPU (sd, c);
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SIM_CPU *cpu = STATE_CPU (sd, c);
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for (i = 0; i < MAX_PROFILE_VALUES; ++i)
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for (i = 0; i < MAX_PROFILE_VALUES; ++i)
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if (CPU_PROFILE_FLAGS (cpu) [i])
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if (CPU_PROFILE_FLAGS (cpu) [i])
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{
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{
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run_fast_p = 0;
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run_fast_p = 0;
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break;
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break;
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}
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}
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for (i = 0; i < MAX_TRACE_VALUES; ++i)
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for (i = 0; i < MAX_TRACE_VALUES; ++i)
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if (CPU_TRACE_FLAGS (cpu) [i])
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if (CPU_TRACE_FLAGS (cpu) [i])
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{
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{
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run_fast_p = 0;
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run_fast_p = 0;
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break;
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break;
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}
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}
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if (! run_fast_p)
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if (! run_fast_p)
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break;
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break;
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}
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}
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STATE_RUN_FAST_P (sd) = run_fast_p;
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STATE_RUN_FAST_P (sd) = run_fast_p;
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}
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}
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}
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}
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/* Return the name of insn number I. */
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/* Return the name of insn number I. */
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const char *
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const char *
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cgen_insn_name (SIM_CPU *cpu, int i)
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cgen_insn_name (SIM_CPU *cpu, int i)
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{
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{
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return CGEN_INSN_NAME ((* CPU_GET_IDATA (cpu)) ((cpu), (i)));
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return CGEN_INSN_NAME ((* CPU_GET_IDATA (cpu)) ((cpu), (i)));
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}
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}
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/* Return the maximum number of extra bytes required for a SIM_CPU struct. */
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/* Return the maximum number of extra bytes required for a SIM_CPU struct. */
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int
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int
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cgen_cpu_max_extra_bytes (void)
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cgen_cpu_max_extra_bytes (void)
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{
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{
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int i;
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int i;
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int extra = 0;
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int extra = 0;
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for (i = 0; sim_machs[i] != 0; ++i)
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for (i = 0; sim_machs[i] != 0; ++i)
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{
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{
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int size = IMP_PROPS_SIM_CPU_SIZE (MACH_IMP_PROPS (sim_machs[i]));
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int size = IMP_PROPS_SIM_CPU_SIZE (MACH_IMP_PROPS (sim_machs[i]));
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if (size > extra)
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if (size > extra)
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extra = size;
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extra = size;
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}
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}
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return extra;
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return extra;
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}
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}
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#ifdef DI_FN_SUPPORT
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#ifdef DI_FN_SUPPORT
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DI
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DI
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make_struct_di (hi, lo)
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make_struct_di (hi, lo)
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SI hi, lo;
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SI hi, lo;
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{
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{
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DI result;
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DI result;
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result.hi = hi;
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result.hi = hi;
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result.lo = lo;
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result.lo = lo;
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return result;
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return result;
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}
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}
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DI
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DI
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ANDDI (a, b)
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ANDDI (a, b)
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DI a, b;
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DI a, b;
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{
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{
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SI ahi = GETHIDI (a);
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SI ahi = GETHIDI (a);
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SI alo = GETLODI (a);
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SI alo = GETLODI (a);
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SI bhi = GETHIDI (b);
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SI bhi = GETHIDI (b);
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SI blo = GETLODI (b);
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SI blo = GETLODI (b);
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return MAKEDI (ahi & bhi, alo & blo);
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return MAKEDI (ahi & bhi, alo & blo);
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}
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}
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DI
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DI
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ORDI (a, b)
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ORDI (a, b)
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DI a, b;
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DI a, b;
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{
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{
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SI ahi = GETHIDI (a);
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SI ahi = GETHIDI (a);
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SI alo = GETLODI (a);
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SI alo = GETLODI (a);
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SI bhi = GETHIDI (b);
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SI bhi = GETHIDI (b);
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SI blo = GETLODI (b);
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SI blo = GETLODI (b);
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return MAKEDI (ahi | bhi, alo | blo);
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return MAKEDI (ahi | bhi, alo | blo);
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}
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}
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DI
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DI
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ADDDI (a, b)
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ADDDI (a, b)
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DI a, b;
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DI a, b;
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{
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{
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USI ahi = GETHIDI (a);
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USI ahi = GETHIDI (a);
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USI alo = GETLODI (a);
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USI alo = GETLODI (a);
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USI bhi = GETHIDI (b);
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USI bhi = GETHIDI (b);
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USI blo = GETLODI (b);
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USI blo = GETLODI (b);
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USI x = alo + blo;
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USI x = alo + blo;
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return MAKEDI (ahi + bhi + (x < alo), x);
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return MAKEDI (ahi + bhi + (x < alo), x);
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}
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}
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DI
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DI
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MULDI (a, b)
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MULDI (a, b)
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DI a, b;
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DI a, b;
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{
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{
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USI ahi = GETHIDI (a);
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USI ahi = GETHIDI (a);
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USI alo = GETLODI (a);
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USI alo = GETLODI (a);
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USI bhi = GETHIDI (b);
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USI bhi = GETHIDI (b);
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USI blo = GETLODI (b);
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USI blo = GETLODI (b);
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USI rhi,rlo;
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USI rhi,rlo;
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USI x0, x1, x2, x3;
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USI x0, x1, x2, x3;
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x0 = alo * blo;
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x0 = alo * blo;
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x1 = alo * bhi;
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x1 = alo * bhi;
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x2 = ahi * blo;
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x2 = ahi * blo;
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x3 = ahi * bhi;
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x3 = ahi * bhi;
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#define SI_TYPE_SIZE 32
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#define SI_TYPE_SIZE 32
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#define BITS4 (SI_TYPE_SIZE / 4)
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#define BITS4 (SI_TYPE_SIZE / 4)
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#define ll_B (1L << (SI_TYPE_SIZE / 2))
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#define ll_B (1L << (SI_TYPE_SIZE / 2))
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#define ll_lowpart(t) ((USI) (t) % ll_B)
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#define ll_lowpart(t) ((USI) (t) % ll_B)
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#define ll_highpart(t) ((USI) (t) / ll_B)
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#define ll_highpart(t) ((USI) (t) / ll_B)
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x1 += ll_highpart (x0); /* this can't give carry */
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x1 += ll_highpart (x0); /* this can't give carry */
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x1 += x2; /* but this indeed can */
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x1 += x2; /* but this indeed can */
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if (x1 < x2) /* did we get it? */
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if (x1 < x2) /* did we get it? */
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x3 += ll_B; /* yes, add it in the proper pos. */
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x3 += ll_B; /* yes, add it in the proper pos. */
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rhi = x3 + ll_highpart (x1);
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rhi = x3 + ll_highpart (x1);
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rlo = ll_lowpart (x1) * ll_B + ll_lowpart (x0);
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rlo = ll_lowpart (x1) * ll_B + ll_lowpart (x0);
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return MAKEDI (rhi + (alo * bhi) + (ahi * blo), rlo);
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return MAKEDI (rhi + (alo * bhi) + (ahi * blo), rlo);
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}
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}
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DI
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DI
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SHLDI (val, shift)
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SHLDI (val, shift)
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DI val;
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DI val;
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SI shift;
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SI shift;
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{
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{
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USI hi = GETHIDI (val);
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USI hi = GETHIDI (val);
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USI lo = GETLODI (val);
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USI lo = GETLODI (val);
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/* FIXME: Need to worry about shift < 0 || shift >= 32. */
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/* FIXME: Need to worry about shift < 0 || shift >= 32. */
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return MAKEDI ((hi << shift) | (lo >> (32 - shift)), lo << shift);
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return MAKEDI ((hi << shift) | (lo >> (32 - shift)), lo << shift);
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}
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}
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DI
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DI
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SLADI (val, shift)
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SLADI (val, shift)
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DI val;
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DI val;
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SI shift;
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SI shift;
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{
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{
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SI hi = GETHIDI (val);
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SI hi = GETHIDI (val);
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USI lo = GETLODI (val);
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USI lo = GETLODI (val);
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/* FIXME: Need to worry about shift < 0 || shift >= 32. */
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/* FIXME: Need to worry about shift < 0 || shift >= 32. */
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return MAKEDI ((hi << shift) | (lo >> (32 - shift)), lo << shift);
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return MAKEDI ((hi << shift) | (lo >> (32 - shift)), lo << shift);
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}
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}
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DI
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DI
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SRADI (val, shift)
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SRADI (val, shift)
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DI val;
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DI val;
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SI shift;
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SI shift;
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{
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{
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SI hi = GETHIDI (val);
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SI hi = GETHIDI (val);
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USI lo = GETLODI (val);
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USI lo = GETLODI (val);
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/* We use SRASI because the result is implementation defined if hi < 0. */
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/* We use SRASI because the result is implementation defined if hi < 0. */
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/* FIXME: Need to worry about shift < 0 || shift >= 32. */
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/* FIXME: Need to worry about shift < 0 || shift >= 32. */
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return MAKEDI (SRASI (hi, shift), (hi << (32 - shift)) | (lo >> shift));
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return MAKEDI (SRASI (hi, shift), (hi << (32 - shift)) | (lo >> shift));
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}
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}
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int
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int
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GEDI (a, b)
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GEDI (a, b)
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DI a, b;
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DI a, b;
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{
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{
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SI ahi = GETHIDI (a);
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SI ahi = GETHIDI (a);
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USI alo = GETLODI (a);
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USI alo = GETLODI (a);
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SI bhi = GETHIDI (b);
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SI bhi = GETHIDI (b);
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USI blo = GETLODI (b);
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USI blo = GETLODI (b);
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if (ahi > bhi)
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if (ahi > bhi)
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return 1;
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return 1;
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if (ahi == bhi)
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if (ahi == bhi)
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return alo >= blo;
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return alo >= blo;
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return 0;
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return 0;
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}
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}
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int
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int
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LEDI (a, b)
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LEDI (a, b)
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DI a, b;
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DI a, b;
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{
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{
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SI ahi = GETHIDI (a);
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SI ahi = GETHIDI (a);
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USI alo = GETLODI (a);
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USI alo = GETLODI (a);
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SI bhi = GETHIDI (b);
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SI bhi = GETHIDI (b);
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USI blo = GETLODI (b);
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USI blo = GETLODI (b);
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if (ahi < bhi)
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if (ahi < bhi)
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return 1;
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return 1;
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if (ahi == bhi)
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if (ahi == bhi)
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return alo <= blo;
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return alo <= blo;
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return 0;
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return 0;
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}
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}
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DI
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DI
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CONVHIDI (val)
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CONVHIDI (val)
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HI val;
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HI val;
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{
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{
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if (val < 0)
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if (val < 0)
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return MAKEDI (-1, val);
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return MAKEDI (-1, val);
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else
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else
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return MAKEDI (0, val);
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return MAKEDI (0, val);
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}
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}
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DI
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DI
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CONVSIDI (val)
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CONVSIDI (val)
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SI val;
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SI val;
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{
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{
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if (val < 0)
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if (val < 0)
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return MAKEDI (-1, val);
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return MAKEDI (-1, val);
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else
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else
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return MAKEDI (0, val);
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return MAKEDI (0, val);
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}
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}
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SI
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SI
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CONVDISI (val)
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CONVDISI (val)
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DI val;
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DI val;
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{
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{
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return GETLODI (val);
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return GETLODI (val);
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}
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}
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#endif /* DI_FN_SUPPORT */
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#endif /* DI_FN_SUPPORT */
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QI
|
QI
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RORQI (val, shift)
|
RORQI (val, shift)
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QI val;
|
QI val;
|
int shift;
|
int shift;
|
{
|
{
|
if (shift != 0)
|
if (shift != 0)
|
{
|
{
|
int remain = 8 - shift;
|
int remain = 8 - shift;
|
int mask = (1 << shift) - 1;
|
int mask = (1 << shift) - 1;
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QI result = (val & mask) << remain;
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QI result = (val & mask) << remain;
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mask = (1 << remain) - 1;
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mask = (1 << remain) - 1;
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result |= (val >> shift) & mask;
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result |= (val >> shift) & mask;
|
return result;
|
return result;
|
}
|
}
|
return val;
|
return val;
|
}
|
}
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QI
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QI
|
ROLQI (val, shift)
|
ROLQI (val, shift)
|
QI val;
|
QI val;
|
int shift;
|
int shift;
|
{
|
{
|
if (shift != 0)
|
if (shift != 0)
|
{
|
{
|
int remain = 8 - shift;
|
int remain = 8 - shift;
|
int mask = (1 << remain) - 1;
|
int mask = (1 << remain) - 1;
|
QI result = (val & mask) << shift;
|
QI result = (val & mask) << shift;
|
mask = (1 << shift) - 1;
|
mask = (1 << shift) - 1;
|
result |= (val >> remain) & mask;
|
result |= (val >> remain) & mask;
|
return result;
|
return result;
|
}
|
}
|
return val;
|
return val;
|
}
|
}
|
|
|
HI
|
HI
|
RORHI (val, shift)
|
RORHI (val, shift)
|
HI val;
|
HI val;
|
int shift;
|
int shift;
|
{
|
{
|
if (shift != 0)
|
if (shift != 0)
|
{
|
{
|
int remain = 16 - shift;
|
int remain = 16 - shift;
|
int mask = (1 << shift) - 1;
|
int mask = (1 << shift) - 1;
|
HI result = (val & mask) << remain;
|
HI result = (val & mask) << remain;
|
mask = (1 << remain) - 1;
|
mask = (1 << remain) - 1;
|
result |= (val >> shift) & mask;
|
result |= (val >> shift) & mask;
|
return result;
|
return result;
|
}
|
}
|
return val;
|
return val;
|
}
|
}
|
|
|
HI
|
HI
|
ROLHI (val, shift)
|
ROLHI (val, shift)
|
HI val;
|
HI val;
|
int shift;
|
int shift;
|
{
|
{
|
if (shift != 0)
|
if (shift != 0)
|
{
|
{
|
int remain = 16 - shift;
|
int remain = 16 - shift;
|
int mask = (1 << remain) - 1;
|
int mask = (1 << remain) - 1;
|
HI result = (val & mask) << shift;
|
HI result = (val & mask) << shift;
|
mask = (1 << shift) - 1;
|
mask = (1 << shift) - 1;
|
result |= (val >> remain) & mask;
|
result |= (val >> remain) & mask;
|
return result;
|
return result;
|
}
|
}
|
return val;
|
return val;
|
}
|
}
|
|
|
SI
|
SI
|
RORSI (val, shift)
|
RORSI (val, shift)
|
SI val;
|
SI val;
|
int shift;
|
int shift;
|
{
|
{
|
if (shift != 0)
|
if (shift != 0)
|
{
|
{
|
int remain = 32 - shift;
|
int remain = 32 - shift;
|
int mask = (1 << shift) - 1;
|
int mask = (1 << shift) - 1;
|
SI result = (val & mask) << remain;
|
SI result = (val & mask) << remain;
|
mask = (1 << remain) - 1;
|
mask = (1 << remain) - 1;
|
result |= (val >> shift) & mask;
|
result |= (val >> shift) & mask;
|
return result;
|
return result;
|
}
|
}
|
return val;
|
return val;
|
}
|
}
|
|
|
SI
|
SI
|
ROLSI (val, shift)
|
ROLSI (val, shift)
|
SI val;
|
SI val;
|
int shift;
|
int shift;
|
{
|
{
|
if (shift != 0)
|
if (shift != 0)
|
{
|
{
|
int remain = 32 - shift;
|
int remain = 32 - shift;
|
int mask = (1 << remain) - 1;
|
int mask = (1 << remain) - 1;
|
SI result = (val & mask) << shift;
|
SI result = (val & mask) << shift;
|
mask = (1 << shift) - 1;
|
mask = (1 << shift) - 1;
|
result |= (val >> remain) & mask;
|
result |= (val >> remain) & mask;
|
return result;
|
return result;
|
}
|
}
|
|
|
return val;
|
return val;
|
}
|
}
|
|
|
/* Emit an error message from CGEN RTL. */
|
/* Emit an error message from CGEN RTL. */
|
|
|
void
|
void
|
cgen_rtx_error (SIM_CPU *cpu, const char * msg)
|
cgen_rtx_error (SIM_CPU *cpu, const char * msg)
|
{
|
{
|
SIM_DESC sd = CPU_STATE (cpu);
|
SIM_DESC sd = CPU_STATE (cpu);
|
|
|
sim_io_printf (sd, msg);
|
sim_io_printf (sd, msg);
|
sim_io_printf (sd, "\n");
|
sim_io_printf (sd, "\n");
|
|
|
sim_engine_halt (sd, cpu, NULL, CIA_GET (cpu), sim_stopped, SIM_SIGTRAP);
|
sim_engine_halt (sd, cpu, NULL, CIA_GET (cpu), sim_stopped, SIM_SIGTRAP);
|
}
|
}
|
|
|
