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593 lines
16 KiB
C
593 lines
16 KiB
C
/* Simulator tracing/debugging support.
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Copyright (C) 1997-2015 Free Software Foundation, Inc.
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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 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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/* This file is meant to be included by sim-basics.h. */
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#ifndef SIM_TRACE_H
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#define SIM_TRACE_H
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/* Standard traceable entities. */
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enum {
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/* Trace insn execution. */
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TRACE_INSN_IDX = 1,
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/* Trace insn decoding.
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??? This is more of a simulator debugging operation and might best be
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moved to --debug-decode. */
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TRACE_DECODE_IDX,
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/* Trace insn extraction.
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??? This is more of a simulator debugging operation and might best be
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moved to --debug-extract. */
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TRACE_EXTRACT_IDX,
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/* Trace insn execution but include line numbers. */
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TRACE_LINENUM_IDX,
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/* Trace memory operations.
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The difference between this and TRACE_CORE_IDX is (I think) that this
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is intended to apply to a higher level. TRACE_CORE_IDX applies to the
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low level core operations. */
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TRACE_MEMORY_IDX,
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/* Include model performance data in tracing output. */
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TRACE_MODEL_IDX,
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/* Trace ALU operations. */
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TRACE_ALU_IDX,
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/* Trace memory core operations. */
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TRACE_CORE_IDX,
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/* Trace events. */
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TRACE_EVENTS_IDX,
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/* Trace fpu operations. */
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TRACE_FPU_IDX,
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/* Trace vpu operations. */
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TRACE_VPU_IDX,
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/* Trace branching. */
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TRACE_BRANCH_IDX,
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/* Trace syscalls. */
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TRACE_SYSCALL_IDX,
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/* Add information useful for debugging the simulator to trace output. */
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TRACE_DEBUG_IDX,
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/* Simulator specific trace bits begin here. */
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TRACE_NEXT_IDX,
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};
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/* Maximum number of traceable entities. */
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#ifndef MAX_TRACE_VALUES
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#define MAX_TRACE_VALUES 32
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#endif
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/* The -t option only prints useful values. It's easy to type and shouldn't
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splat on the screen everything under the sun making nothing easy to
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find. */
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#define TRACE_USEFUL_MASK \
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((1 << TRACE_INSN_IDX) \
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| (1 << TRACE_LINENUM_IDX) \
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| (1 << TRACE_MEMORY_IDX) \
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| (1 << TRACE_MODEL_IDX))
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/* Masks so WITH_TRACE can have symbolic values.
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The case choice here is on purpose. The lowercase parts are args to
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--with-trace. */
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#define TRACE_insn (1 << TRACE_INSN_IDX)
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#define TRACE_decode (1 << TRACE_DECODE_IDX)
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#define TRACE_extract (1 << TRACE_EXTRACT_IDX)
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#define TRACE_linenum (1 << TRACE_LINENUM_IDX)
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#define TRACE_memory (1 << TRACE_MEMORY_IDX)
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#define TRACE_model (1 << TRACE_MODEL_IDX)
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#define TRACE_alu (1 << TRACE_ALU_IDX)
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#define TRACE_core (1 << TRACE_CORE_IDX)
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#define TRACE_events (1 << TRACE_EVENTS_IDX)
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#define TRACE_fpu (1 << TRACE_FPU_IDX)
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#define TRACE_vpu (1 << TRACE_VPU_IDX)
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#define TRACE_branch (1 << TRACE_BRANCH_IDX)
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#define TRACE_syscall (1 << TRACE_SYSCALL_IDX)
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#define TRACE_debug (1 << TRACE_DEBUG_IDX)
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/* Preprocessor macros to simplify tests of WITH_TRACE. */
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#define WITH_TRACE_INSN_P (WITH_TRACE & TRACE_insn)
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#define WITH_TRACE_DECODE_P (WITH_TRACE & TRACE_decode)
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#define WITH_TRACE_EXTRACT_P (WITH_TRACE & TRACE_extract)
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#define WITH_TRACE_LINENUM_P (WITH_TRACE & TRACE_linenum)
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#define WITH_TRACE_MEMORY_P (WITH_TRACE & TRACE_memory)
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#define WITH_TRACE_MODEL_P (WITH_TRACE & TRACE_model)
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#define WITH_TRACE_ALU_P (WITH_TRACE & TRACE_alu)
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#define WITH_TRACE_CORE_P (WITH_TRACE & TRACE_core)
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#define WITH_TRACE_EVENTS_P (WITH_TRACE & TRACE_events)
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#define WITH_TRACE_FPU_P (WITH_TRACE & TRACE_fpu)
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#define WITH_TRACE_VPU_P (WITH_TRACE & TRACE_vpu)
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#define WITH_TRACE_BRANCH_P (WITH_TRACE & TRACE_branch)
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#define WITH_TRACE_SYSCALL_P (WITH_TRACE & TRACE_syscall)
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#define WITH_TRACE_DEBUG_P (WITH_TRACE & TRACE_debug)
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/* Tracing install handler. */
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MODULE_INSTALL_FN trace_install;
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/* Struct containing all system and cpu trace data.
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System trace data is stored with the associated module.
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System and cpu tracing must share the same space of bitmasks as they
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are arguments to --with-trace. One could have --with-trace and
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--with-cpu-trace or some such but that's an over-complication at this point
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in time. Also, there may be occasions where system and cpu tracing may
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wish to share a name. */
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typedef struct _trace_data {
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/* Global summary of all the current trace options */
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char trace_any_p;
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/* Boolean array of specified tracing flags. */
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/* ??? It's not clear that using an array vs a bit mask is faster.
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Consider the case where one wants to test whether any of several bits
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are set. */
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char trace_flags[MAX_TRACE_VALUES];
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#define TRACE_FLAGS(t) ((t)->trace_flags)
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/* Tracing output goes to this or stderr if NULL.
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We can't store `stderr' here as stderr goes through a callback. */
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FILE *trace_file;
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#define TRACE_FILE(t) ((t)->trace_file)
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/* Buffer to store the prefix to be printed before any trace line. */
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char trace_prefix[256];
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#define TRACE_PREFIX(t) ((t)->trace_prefix)
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/* Buffer to save the inputs for the current instruction. Use a
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union to force the buffer into correct alignment */
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union {
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unsigned8 i8;
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unsigned16 i16;
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unsigned32 i32;
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unsigned64 i64;
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} trace_input_data[16];
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unsigned8 trace_input_fmt[16];
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unsigned8 trace_input_size[16];
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int trace_input_idx;
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#define TRACE_INPUT_DATA(t) ((t)->trace_input_data)
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#define TRACE_INPUT_FMT(t) ((t)->trace_input_fmt)
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#define TRACE_INPUT_SIZE(t) ((t)->trace_input_size)
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#define TRACE_INPUT_IDX(t) ((t)->trace_input_idx)
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/* Category of trace being performed */
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int trace_idx;
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#define TRACE_IDX(t) ((t)->trace_idx)
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/* Trace range.
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??? Not all cpu's support this. */
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ADDR_RANGE range;
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#define TRACE_RANGE(t) (& (t)->range)
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} TRACE_DATA;
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/* System tracing support. */
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#define STATE_TRACE_FLAGS(sd) TRACE_FLAGS (STATE_TRACE_DATA (sd))
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/* Return non-zero if tracing of IDX is enabled for non-cpu specific
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components. The "S" in "STRACE" refers to "System". */
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#define STRACE_P(sd,idx) \
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((WITH_TRACE & (1 << (idx))) != 0 \
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&& STATE_TRACE_FLAGS (sd)[idx] != 0)
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/* Non-zero if --trace-<xxxx> was specified for SD. */
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#define STRACE_DEBUG_P(sd) STRACE_P (sd, TRACE_DEBUG_IDX)
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/* CPU tracing support. */
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#define CPU_TRACE_FLAGS(cpu) TRACE_FLAGS (CPU_TRACE_DATA (cpu))
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/* Return non-zero if tracing of IDX is enabled for CPU. */
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#define TRACE_P(cpu,idx) \
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((WITH_TRACE & (1 << (idx))) != 0 \
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&& CPU_TRACE_FLAGS (cpu)[idx] != 0)
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/* Non-zero if --trace-<xxxx> was specified for CPU. */
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#define TRACE_ANY_P(cpu) ((WITH_TRACE) && (CPU_TRACE_DATA (cpu)->trace_any_p))
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#define TRACE_INSN_P(cpu) TRACE_P (cpu, TRACE_INSN_IDX)
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#define TRACE_DECODE_P(cpu) TRACE_P (cpu, TRACE_DECODE_IDX)
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#define TRACE_EXTRACT_P(cpu) TRACE_P (cpu, TRACE_EXTRACT_IDX)
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#define TRACE_LINENUM_P(cpu) TRACE_P (cpu, TRACE_LINENUM_IDX)
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#define TRACE_MEMORY_P(cpu) TRACE_P (cpu, TRACE_MEMORY_IDX)
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#define TRACE_MODEL_P(cpu) TRACE_P (cpu, TRACE_MODEL_IDX)
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#define TRACE_ALU_P(cpu) TRACE_P (cpu, TRACE_ALU_IDX)
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#define TRACE_CORE_P(cpu) TRACE_P (cpu, TRACE_CORE_IDX)
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#define TRACE_EVENTS_P(cpu) TRACE_P (cpu, TRACE_EVENTS_IDX)
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#define TRACE_FPU_P(cpu) TRACE_P (cpu, TRACE_FPU_IDX)
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#define TRACE_VPU_P(cpu) TRACE_P (cpu, TRACE_VPU_IDX)
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#define TRACE_BRANCH_P(cpu) TRACE_P (cpu, TRACE_BRANCH_IDX)
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#define TRACE_SYSCALL_P(cpu) TRACE_P (cpu, TRACE_SYSCALL_IDX)
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#define TRACE_DEBUG_P(cpu) TRACE_P (cpu, TRACE_DEBUG_IDX)
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/* Tracing functions. */
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/* Prime the trace buffers ready for any trace output.
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Must be called prior to any other trace operation */
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extern void trace_prefix (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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address_word pc,
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int print_linenum_p,
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const char *file_name,
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int line_nr,
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const char *fmt,
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...)
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__attribute__((format (printf, 8, 9)));
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/* Generic trace print, assumes trace_prefix() has been called */
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extern void trace_generic (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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const char *fmt,
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...)
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__attribute__((format (printf, 4, 5)));
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typedef enum {
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trace_fmt_invalid,
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trace_fmt_word,
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trace_fmt_fp,
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trace_fmt_fpu,
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trace_fmt_string,
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trace_fmt_bool,
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trace_fmt_addr,
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trace_fmt_instruction_incomplete,
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} data_fmt;
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/* Trace a varying number of word sized inputs/outputs. trace_result*
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must be called to close the trace operation. */
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extern void save_data (SIM_DESC sd,
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TRACE_DATA *data,
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data_fmt fmt,
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long size,
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const void *buf);
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extern void trace_input0 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx);
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extern void trace_input_word1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word d0);
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extern void trace_input_word2 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word d0,
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unsigned_word d1);
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extern void trace_input_word3 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word d0,
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unsigned_word d1,
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unsigned_word d2);
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extern void trace_input_word4 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word d0,
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unsigned_word d1,
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unsigned_word d2,
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unsigned_word d3);
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extern void trace_input_addr1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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address_word d0);
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extern void trace_input_bool1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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int d0);
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extern void trace_input_fp1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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fp_word f0);
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extern void trace_input_fp2 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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fp_word f0,
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fp_word f1);
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extern void trace_input_fp3 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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fp_word f0,
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fp_word f1,
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fp_word f2);
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extern void trace_input_fpu1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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struct _sim_fpu *f0);
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extern void trace_input_fpu2 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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struct _sim_fpu *f0,
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struct _sim_fpu *f1);
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extern void trace_input_fpu3 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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struct _sim_fpu *f0,
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struct _sim_fpu *f1,
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struct _sim_fpu *f2);
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/* Other trace_input{_<fmt><nr-inputs>} functions can go here */
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extern void trace_result0 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx);
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extern void trace_result_word1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word r0);
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extern void trace_result_word2 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word r0,
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unsigned_word r1);
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extern void trace_result_word4 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word r0,
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unsigned_word r1,
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unsigned_word r2,
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unsigned_word r3);
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extern void trace_result_bool1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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int r0);
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extern void trace_result_addr1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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address_word r0);
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extern void trace_result_fp1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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fp_word f0);
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extern void trace_result_fp2 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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fp_word f0,
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fp_word f1);
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extern void trace_result_fpu1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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struct _sim_fpu *f0);
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extern void trace_result_string1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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char *str0);
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extern void trace_result_word1_string1 (SIM_DESC sd,
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sim_cpu *cpu,
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int trace_idx,
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unsigned_word r0,
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char *s0);
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/* Other trace_result{_<type><nr-results>} */
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/* Macros for tracing ALU instructions */
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#define TRACE_ALU_INPUT0() \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_input0 (SD, CPU, TRACE_ALU_IDX); \
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} while (0)
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#define TRACE_ALU_INPUT1(V0) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_input_word1 (SD, CPU, TRACE_ALU_IDX, (V0)); \
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} while (0)
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#define TRACE_ALU_INPUT2(V0,V1) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_input_word2 (SD, CPU, TRACE_ALU_IDX, (V0), (V1)); \
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} while (0)
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#define TRACE_ALU_INPUT3(V0,V1,V2) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_input_word3 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2)); \
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} while (0)
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#define TRACE_ALU_INPUT4(V0,V1,V2,V3) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_input_word4 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2), (V3)); \
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} while (0)
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#define TRACE_ALU_RESULT(R0) TRACE_ALU_RESULT1(R0)
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#define TRACE_ALU_RESULT0() \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_result0 (SD, CPU, TRACE_ALU_IDX); \
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} while (0)
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#define TRACE_ALU_RESULT1(R0) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_result_word1 (SD, CPU, TRACE_ALU_IDX, (R0)); \
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} while (0)
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#define TRACE_ALU_RESULT2(R0,R1) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_result_word2 (SD, CPU, TRACE_ALU_IDX, (R0), (R1)); \
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} while (0)
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#define TRACE_ALU_RESULT4(R0,R1,R2,R3) \
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do { \
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if (TRACE_ALU_P (CPU)) \
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trace_result_word4 (SD, CPU, TRACE_ALU_IDX, (R0), (R1), (R2), (R3)); \
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} while (0)
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/* Macros for tracing inputs to comparative branch instructions. */
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#define TRACE_BRANCH_INPUT1(V0) \
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do { \
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if (TRACE_BRANCH_P (CPU)) \
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trace_input_word1 (SD, CPU, TRACE_BRANCH_IDX, (V0)); \
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} while (0)
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#define TRACE_BRANCH_INPUT2(V0,V1) \
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do { \
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if (TRACE_BRANCH_P (CPU)) \
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trace_input_word2 (SD, CPU, TRACE_BRANCH_IDX, (V0), (V1)); \
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} while (0)
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/* Macros for tracing FPU instructions */
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#define TRACE_FP_INPUT0() \
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do { \
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if (TRACE_FPU_P (CPU)) \
|
||
trace_input0 (SD, CPU, TRACE_FPU_IDX); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_INPUT1(V0) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_input_fp1 (SD, CPU, TRACE_FPU_IDX, (V0)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_INPUT2(V0,V1) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_input_fp2 (SD, CPU, TRACE_FPU_IDX, (V0), (V1)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_INPUT3(V0,V1,V2) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_input_fp3 (SD, CPU, TRACE_FPU_IDX, (V0), (V1), (V2)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_INPUT_WORD1(V0) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_input_word1 (SD, CPU, TRACE_FPU_IDX, (V0)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_RESULT(R0) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_result_fp1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_RESULT2(R0,R1) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_result_fp2 (SD, CPU, TRACE_FPU_IDX, (R0), (R1)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_RESULT_BOOL(R0) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_result_bool1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
|
||
} while (0)
|
||
|
||
#define TRACE_FP_RESULT_WORD(R0) \
|
||
do { \
|
||
if (TRACE_FPU_P (CPU)) \
|
||
trace_result_word1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
|
||
} while (0)
|
||
|
||
|
||
/* Macros for tracing branches */
|
||
|
||
#define TRACE_BRANCH_INPUT(COND) \
|
||
do { \
|
||
if (TRACE_BRANCH_P (CPU)) \
|
||
trace_input_bool1 (SD, CPU, TRACE_BRANCH_IDX, (COND)); \
|
||
} while (0)
|
||
|
||
#define TRACE_BRANCH_RESULT(DEST) \
|
||
do { \
|
||
if (TRACE_BRANCH_P (CPU)) \
|
||
trace_result_addr1 (SD, CPU, TRACE_BRANCH_IDX, (DEST)); \
|
||
} while (0)
|
||
|
||
|
||
/* The function trace_one_insn has been replaced by the function pair
|
||
trace_prefix() + trace_generic() */
|
||
extern void trace_one_insn (SIM_DESC sd,
|
||
sim_cpu * cpu,
|
||
address_word cia,
|
||
int print_linenum_p,
|
||
const char *file_name,
|
||
int line_nr,
|
||
const char *unit,
|
||
const char *fmt,
|
||
...)
|
||
__attribute__((format (printf, 8, 9)));
|
||
|
||
extern void trace_printf (SIM_DESC, sim_cpu *, const char *, ...)
|
||
__attribute__((format (printf, 3, 4)));
|
||
|
||
extern void trace_vprintf (SIM_DESC, sim_cpu *, const char *, va_list);
|
||
|
||
/* Debug support.
|
||
This is included here because there isn't enough of it to justify
|
||
a sim-debug.h. */
|
||
|
||
/* Return non-zero if debugging of IDX for CPU is enabled. */
|
||
#define DEBUG_P(cpu, idx) \
|
||
((WITH_DEBUG & (1 << (idx))) != 0 \
|
||
&& CPU_DEBUG_FLAGS (cpu)[idx] != 0)
|
||
|
||
/* Non-zero if "--debug-insn" specified. */
|
||
#define DEBUG_INSN_P(cpu) DEBUG_P (cpu, DEBUG_INSN_IDX)
|
||
|
||
/* GDB also has a debug_printf, so we shadow ours. */
|
||
#define debug_printf sim_debug_printf
|
||
|
||
extern void debug_printf (sim_cpu *, const char *, ...)
|
||
__attribute__((format (printf, 2, 3)));
|
||
|
||
#endif /* SIM_TRACE_H */
|