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398 lines
11 KiB
C
398 lines
11 KiB
C
/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002-2021 Free Software Foundation, Inc.
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Contributed by Andrew Cagney and Red Hat.
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This file is part of GDB.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef N
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#error "N must be #defined"
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#endif
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#ifndef M
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#define M N
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#endif
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/* N: The number of bytes of data to transfer.
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M: The number of bytes in the type used to transfer the data */
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#if (N > M)
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#error "N (nr bytes of data) must be <= M (nr of bytes in data type)"
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#endif
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#include "symcat.h"
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/* NOTE: see end of file for #undef of these macros */
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#define unsigned_M XCONCAT2(unsigned_,M)
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#define T2H_M XCONCAT2(T2H_,M)
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#define H2T_M XCONCAT2(H2T_,M)
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#define SWAP_M XCONCAT2(SWAP_,M)
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#define sim_core_read_aligned_N XCONCAT2(sim_core_read_aligned_,N)
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#define sim_core_read_unaligned_N XCONCAT2(sim_core_read_unaligned_,N)
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#define sim_core_read_misaligned_N XCONCAT2(sim_core_read_misaligned_,N)
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#define sim_core_write_aligned_N XCONCAT2(sim_core_write_aligned_,N)
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#define sim_core_write_unaligned_N XCONCAT2(sim_core_write_unaligned_,N)
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#define sim_core_write_misaligned_N XCONCAT2(sim_core_write_misaligned_,N)
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#define sim_core_trace_M XCONCAT2(sim_core_trace_,M)
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#define sim_core_dummy_M XCONCAT2(sim_core_dummy_,M)
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#if (M == N && N > 1)
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/* dummy variable used as a return value when nothing else is
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available and the compiler is complaining */
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static unsigned_M sim_core_dummy_M;
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#endif
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/* TAGS: sim_core_trace_1 sim_core_trace_2 */
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/* TAGS: sim_core_trace_4 sim_core_trace_8 */
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/* TAGS: sim_core_trace_16 */
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#if (M == N)
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STATIC_SIM_CORE(void)
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sim_core_trace_M (sim_cpu *cpu,
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sim_cia cia,
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int line_nr,
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transfer_type type,
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unsigned map,
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address_word addr,
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unsigned_M val,
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int nr_bytes)
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{
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const char *transfer = (type == read_transfer ? "read" : "write");
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const char *direction = (type == read_transfer ? "->" : "<-");
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if (TRACE_DEBUG_P (cpu))
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trace_printf (CPU_STATE (cpu), cpu, "sim-n-core.h:%d: ", line_nr);
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#if (M == 16)
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trace_printf (CPU_STATE (cpu), cpu,
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"%s-%d %s:0x%08lx %s 0x%08lx%08lx%08lx%08lx\n",
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transfer, nr_bytes,
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map_to_str (map),
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(unsigned long) addr,
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direction,
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(unsigned long) V4_16 (val, 0),
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(unsigned long) V4_16 (val, 1),
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(unsigned long) V4_16 (val, 2),
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(unsigned long) V4_16 (val, 3));
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#endif
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#if (M == 8)
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trace_printf (CPU_STATE (cpu), cpu,
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"%s-%d %s:0x%08lx %s 0x%08lx%08lx\n",
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transfer, nr_bytes,
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map_to_str (map),
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(unsigned long) addr,
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direction,
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(unsigned long) V4_8 (val, 0),
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(unsigned long) V4_8 (val, 1));
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#endif
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#if (M == 4)
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trace_printf (CPU_STATE (cpu), cpu,
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"%s-%d %s:0x%08lx %s 0x%08lx\n",
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transfer,
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nr_bytes,
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map_to_str (map),
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(unsigned long) addr,
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direction,
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(unsigned long) val);
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#endif
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#if (M == 2)
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trace_printf (CPU_STATE (cpu), cpu,
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"%s-%d %s:0x%08lx %s 0x%04lx\n",
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transfer,
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nr_bytes,
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map_to_str (map),
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(unsigned long) addr,
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direction,
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(unsigned long) val);
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#endif
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#if (M == 1)
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trace_printf (CPU_STATE (cpu), cpu,
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"%s-%d %s:0x%08lx %s 0x%02lx\n",
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transfer,
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nr_bytes,
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map_to_str (map),
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(unsigned long) addr,
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direction,
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(unsigned long) val);
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#endif
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}
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#endif
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/* TAGS: sim_core_read_aligned_1 sim_core_read_aligned_2 */
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/* TAGS: sim_core_read_aligned_4 sim_core_read_aligned_8 */
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/* TAGS: sim_core_read_aligned_16 */
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#if (M == N)
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INLINE_SIM_CORE(unsigned_M)
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sim_core_read_aligned_N(sim_cpu *cpu,
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sim_cia cia,
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unsigned map,
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address_word xaddr)
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{
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sim_cpu_core *cpu_core = CPU_CORE (cpu);
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sim_core_common *core = &cpu_core->common;
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unsigned_M val;
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sim_core_mapping *mapping;
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address_word addr;
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#if WITH_XOR_ENDIAN != 0
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if (WITH_XOR_ENDIAN)
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addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN];
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else
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#endif
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addr = xaddr;
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mapping = sim_core_find_mapping (core, map, addr, N, read_transfer, 1 /*abort*/, cpu, cia);
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do
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{
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#if (WITH_HW)
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if (mapping->device != NULL)
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{
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unsigned_M data;
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sim_cpu_hw_io_read_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N);
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val = T2H_M (data);
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break;
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}
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#endif
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val = T2H_M (*(unsigned_M*) sim_core_translate (mapping, addr));
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}
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while (0);
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PROFILE_COUNT_CORE (cpu, addr, N, map);
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if (TRACE_P (cpu, TRACE_CORE_IDX))
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sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N);
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return val;
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}
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#endif
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/* TAGS: sim_core_read_unaligned_1 sim_core_read_unaligned_2 */
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/* TAGS: sim_core_read_unaligned_4 sim_core_read_unaligned_8 */
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/* TAGS: sim_core_read_unaligned_16 */
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#if (M == N && N > 1)
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INLINE_SIM_CORE(unsigned_M)
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sim_core_read_unaligned_N(sim_cpu *cpu,
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sim_cia cia,
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unsigned map,
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address_word addr)
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{
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int alignment = N - 1;
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/* if hardwired to forced alignment just do it */
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if (WITH_ALIGNMENT == FORCED_ALIGNMENT)
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return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment);
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else if ((addr & alignment) == 0)
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return sim_core_read_aligned_N (cpu, cia, map, addr);
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else
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switch (CURRENT_ALIGNMENT)
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{
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case STRICT_ALIGNMENT:
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SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
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read_transfer, sim_core_unaligned_signal);
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case NONSTRICT_ALIGNMENT:
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{
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unsigned_M val;
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if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N)
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SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
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read_transfer, sim_core_unaligned_signal);
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val = T2H_M(val);
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PROFILE_COUNT_CORE (cpu, addr, N, map);
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if (TRACE_P (cpu, TRACE_CORE_IDX))
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sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N);
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return val;
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}
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case FORCED_ALIGNMENT:
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return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment);
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case MIXED_ALIGNMENT:
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sim_engine_abort (CPU_STATE (cpu), cpu, cia,
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"internal error - %s - mixed alignment",
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XSTRING (sim_core_read_unaligned_N));
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default:
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sim_engine_abort (CPU_STATE (cpu), cpu, cia,
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"internal error - %s - bad switch",
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XSTRING (sim_core_read_unaligned_N));
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/* to keep some compilers happy, we return a dummy */
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return sim_core_dummy_M;
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}
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}
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#endif
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/* TAGS: sim_core_read_misaligned_3 sim_core_read_misaligned_5 */
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/* TAGS: sim_core_read_misaligned_6 sim_core_read_misaligned_7 */
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#if (M != N)
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INLINE_SIM_CORE(unsigned_M)
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sim_core_read_misaligned_N(sim_cpu *cpu,
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sim_cia cia,
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unsigned map,
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address_word addr)
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{
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unsigned_M val = 0;
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if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N)
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SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
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read_transfer, sim_core_unaligned_signal);
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if (HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER)
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val = SWAP_M (val);
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if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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val >>= (M - N) * 8;
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PROFILE_COUNT_CORE (cpu, addr, N, map);
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if (TRACE_P (cpu, TRACE_CORE_IDX))
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sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N);
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return val;
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}
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#endif
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/* TAGS: sim_core_write_aligned_1 sim_core_write_aligned_2 */
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/* TAGS: sim_core_write_aligned_4 sim_core_write_aligned_8 */
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/* TAGS: sim_core_write_aligned_16 */
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#if (M == N)
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INLINE_SIM_CORE(void)
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sim_core_write_aligned_N(sim_cpu *cpu,
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sim_cia cia,
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unsigned map,
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address_word xaddr,
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unsigned_M val)
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{
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sim_cpu_core *cpu_core = CPU_CORE (cpu);
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sim_core_common *core = &cpu_core->common;
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sim_core_mapping *mapping;
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address_word addr;
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#if WITH_XOR_ENDIAN != 0
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if (WITH_XOR_ENDIAN)
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addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN];
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else
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#endif
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addr = xaddr;
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mapping = sim_core_find_mapping (core, map, addr, N, write_transfer, 1 /*abort*/, cpu, cia);
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do
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{
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#if (WITH_HW)
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if (mapping->device != NULL)
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{
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unsigned_M data = H2T_M (val);
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sim_cpu_hw_io_write_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N);
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break;
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}
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#endif
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*(unsigned_M*) sim_core_translate (mapping, addr) = H2T_M (val);
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}
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while (0);
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PROFILE_COUNT_CORE (cpu, addr, N, map);
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if (TRACE_P (cpu, TRACE_CORE_IDX))
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sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N);
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}
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#endif
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/* TAGS: sim_core_write_unaligned_1 sim_core_write_unaligned_2 */
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/* TAGS: sim_core_write_unaligned_4 sim_core_write_unaligned_8 */
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/* TAGS: sim_core_write_unaligned_16 */
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#if (M == N && N > 1)
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INLINE_SIM_CORE(void)
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sim_core_write_unaligned_N(sim_cpu *cpu,
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sim_cia cia,
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unsigned map,
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address_word addr,
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unsigned_M val)
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{
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int alignment = N - 1;
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/* if hardwired to forced alignment just do it */
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if (WITH_ALIGNMENT == FORCED_ALIGNMENT)
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sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val);
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else if ((addr & alignment) == 0)
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sim_core_write_aligned_N (cpu, cia, map, addr, val);
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else
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switch (CURRENT_ALIGNMENT)
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{
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case STRICT_ALIGNMENT:
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SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
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write_transfer, sim_core_unaligned_signal);
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break;
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case NONSTRICT_ALIGNMENT:
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{
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unsigned_M data = H2T_M (val);
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if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N)
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SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
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write_transfer, sim_core_unaligned_signal);
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PROFILE_COUNT_CORE (cpu, addr, N, map);
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if (TRACE_P (cpu, TRACE_CORE_IDX))
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sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N);
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break;
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}
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case FORCED_ALIGNMENT:
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sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val);
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break;
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case MIXED_ALIGNMENT:
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sim_engine_abort (CPU_STATE (cpu), cpu, cia,
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"internal error - %s - mixed alignment",
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XSTRING (sim_core_write_unaligned_N));
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break;
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default:
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sim_engine_abort (CPU_STATE (cpu), cpu, cia,
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"internal error - %s - bad switch",
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XSTRING (sim_core_write_unaligned_N));
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break;
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}
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}
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#endif
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/* TAGS: sim_core_write_misaligned_3 sim_core_write_misaligned_5 */
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/* TAGS: sim_core_write_misaligned_6 sim_core_write_misaligned_7 */
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#if (M != N)
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INLINE_SIM_CORE(void)
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sim_core_write_misaligned_N(sim_cpu *cpu,
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sim_cia cia,
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unsigned map,
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address_word addr,
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unsigned_M val)
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{
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unsigned_M data = val;
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if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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data <<= (M - N) * 8;
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if (HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER)
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data = SWAP_M (data);
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if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N)
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SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
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write_transfer, sim_core_unaligned_signal);
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PROFILE_COUNT_CORE (cpu, addr, N, map);
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if (TRACE_P (cpu, TRACE_CORE_IDX))
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sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N);
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}
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#endif
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/* NOTE: see start of file for #define of these macros */
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#undef unsigned_M
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#undef T2H_M
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#undef H2T_M
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#undef SWAP_M
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#undef sim_core_read_aligned_N
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#undef sim_core_read_unaligned_N
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#undef sim_core_read_misaligned_N
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#undef sim_core_write_aligned_N
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#undef sim_core_write_unaligned_N
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#undef sim_core_write_misaligned_N
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#undef sim_core_trace_M
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#undef sim_core_dummy_M
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#undef M
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#undef N
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