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b3c77578dc
implementation. Add preliminary support for different IEEE-754 rounding modes. Implement SQRT in software. Update TiC80 simulator. Add sim-fpu -> TestFloat interface for testing.
449 lines
12 KiB
C
449 lines
12 KiB
C
/* TIc80 Simulator.
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Copyright (C) 1997 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 2, or (at your option)
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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 along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "sim-main.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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tic80_control_regs
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tic80_index2cr (int index)
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{
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switch (index)
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{
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case 0x0000: return EPC_CR;
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case 0x0001: return EIP_CR;
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case 0x0002: return CONFIG_CR;
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case 0x0004: return INTPEN_CR;
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case 0x0006: return IE_CR;
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case 0x0008: return FPST_CR;
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case 0x000A: return PPERROR_CR;
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case 0x000D: return PKTREQ_CR;
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case 0x000E: return TCOUNT_CR;
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case 0x000F: return TSCALE_CR;
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case 0x0010: return FLTOP_CR;
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case 0x0011: return FLTADR_CR;
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case 0x0012: return FLTTAG_CR;
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case 0x0013: return FLTDLT_CR;
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case 0x0014: return FLTDTH_CR;
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case 0x0015: return FLT005_CR;
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case 0x0016: return FLT006_CR;
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case 0x0017: return FLT007_CR;
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case 0x0018: return FLT008_CR;
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case 0x0019: return FLT009_CR;
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case 0x001a: return FLT010_CR;
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case 0x001b: return FLT011_CR;
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case 0x001c: return FLT012_CR;
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case 0x001d: return FLT013_CR;
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case 0x001e: return FLT014_CR;
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case 0x001f: return FLT015_CR;
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case 0x0020: return SYSSTK_CR;
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case 0x0021: return SYSTMP_CR;
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case 0x0030: return MPC_CR;
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case 0x0031: return MIP_CR;
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case 0x0033: return ECOMCNTL_CR;
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case 0x0034: return ANASTAT_CR;
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case 0x0039: return BRK1_CR;
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case 0x003A: return BRK2_CR;
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case 0x0200: return ITAG0_CR;
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case 0x0201: return ITAG1_CR;
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case 0x0202: return ITAG2_CR;
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case 0x0203: return ITAG3_CR;
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case 0x0204: return ITAG4_CR;
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case 0x0205: return ITAG5_CR;
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case 0x0206: return ITAG6_CR;
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case 0x0207: return ITAG7_CR;
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case 0x0208: return ITAG8_CR;
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case 0x0209: return ITAG9_CR;
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case 0x020a: return ITAG10_CR;
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case 0x020b: return ITAG11_CR;
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case 0x020c: return ITAG12_CR;
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case 0x020d: return ITAG13_CR;
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case 0x020e: return ITAG14_CR;
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case 0x020f: return ITAG15_CR;
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case 0x0300: return ILRU_CR;
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case 0x0400: return DTAG0_CR;
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case 0x0401: return DTAG1_CR;
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case 0x0402: return DTAG2_CR;
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case 0x0403: return DTAG3_CR;
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case 0x0404: return DTAG4_CR;
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case 0x0405: return DTAG5_CR;
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case 0x0406: return DTAG6_CR;
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case 0x0407: return DTAG7_CR;
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case 0x0408: return DTAG8_CR;
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case 0x0409: return DTAG9_CR;
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case 0x040a: return DTAG10_CR;
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case 0x040b: return DTAG11_CR;
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case 0x040c: return DTAG12_CR;
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case 0x040d: return DTAG13_CR;
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case 0x040e: return DTAG14_CR;
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case 0x040f: return DTAG15_CR;
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case 0x0500: return DLRU_CR;
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case 0x4000: return IN0P_CR;
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case 0x4001: return IN1P_CR;
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case 0x4002: return OUTP_CR;
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default: return SCRATCH_CR;
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}
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}
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#if defined(WITH_TRACE)
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/* Tracing support routines */
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static char tic80_trace_buffer[1024];
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static int tic80_size_name;
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#define SIZE_HEX 8
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#define SIZE_DECIMAL 11
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/* Initialize tracing by calculating the maximum name size */
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static void
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tic80_init_trace (void)
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{
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int i;
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int len, max_len = 0;
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for (i = 0; i < (int)nr_itable_entries; i++) {
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len = strlen (itable[i].name);
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if (len > max_len)
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max_len = len;
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}
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tic80_size_name = max_len + sizeof(":m") - 1 + sizeof (":s") - 1;
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}
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/* Trace the result of an ALU operation with 2 integer inputs and an integer output */
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char *
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tic80_trace_alu3 (int indx,
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unsigned32 result,
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unsigned32 input1,
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unsigned32 input2)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld 0x%.*lx/%*ld => 0x%.*lx/%*ld",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, input1, SIZE_DECIMAL, (long)(signed32)input1,
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SIZE_HEX, input2, SIZE_DECIMAL, (long)(signed32)input2,
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SIZE_HEX, result, SIZE_DECIMAL, (long)(signed32)result);
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return tic80_trace_buffer;
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}
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/* Trace the result of an ALU operation with 1 integer input and an integer output */
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char *
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tic80_trace_alu2 (int indx,
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unsigned32 result,
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unsigned32 input)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld %*s => 0x%.*lx/%*ld",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, input, SIZE_DECIMAL, (long)(signed32)input,
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SIZE_HEX + SIZE_DECIMAL + 3, "",
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SIZE_HEX, result, SIZE_DECIMAL, (long)(signed32)result);
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return tic80_trace_buffer;
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}
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/* Trace the result of a shift instruction */
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char *
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tic80_trace_shift (int indx,
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unsigned32 result,
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unsigned32 input,
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int i,
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int n,
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int merge,
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int endmask,
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int rotate)
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{
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const char *merge_name;
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char name[40];
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char *p;
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if (!tic80_size_name)
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tic80_init_trace ();
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switch (merge)
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{
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default: merge_name = ".??"; break;
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case 0: merge_name = ".dz"; break;
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case 1: merge_name = ".dm"; break;
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case 2: merge_name = ".ds"; break;
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case 3: merge_name = ".ez"; break;
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case 4: merge_name = ".em"; break;
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case 5: merge_name = ".es"; break;
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case 6: merge_name = ".iz"; break;
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case 7: merge_name = ".im"; break;
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}
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/* Don't use itable[indx].name, which is just sl {r,i}. Instead reconstruct
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the name, using the i and n fields. */
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p = strchr (itable[indx].name, ' ');
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sprintf (name, "s%s%s%s%s",
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(n) ? "r" : "l",
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(i) ? "i" : "",
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merge_name,
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(p) ? p : "");
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld %*s%2d,%2d => 0x%.*lx/%*ld",
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tic80_size_name, name,
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SIZE_HEX, input, SIZE_DECIMAL, (long)(signed32)input,
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SIZE_HEX + SIZE_DECIMAL - 2, "",
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rotate, endmask,
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SIZE_HEX, result, SIZE_DECIMAL, (long)(signed32)result);
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return tic80_trace_buffer;
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}
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/* Trace the result of an FPU operation with 2 floating point inputs and a floating point output */
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void
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tic80_trace_fpu3 (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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int indx,
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sim_fpu result,
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sim_fpu input1,
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sim_fpu input2)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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trace_one_insn (sd, cpu, cia.ip, 1,
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itable[indx].file, itable[indx].line_nr, "fpu",
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"%-*s %*g %*g => %*g",
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tic80_size_name, itable[indx].name,
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input1),
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input2),
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&result));
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}
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/* Trace the result of an FPU operation with 1 floating point input and a floating point output */
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void
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tic80_trace_fpu2 (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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int indx,
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sim_fpu result,
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sim_fpu input)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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trace_one_insn (sd, cpu, cia.ip, 1,
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itable[indx].file, itable[indx].line_nr, "fpu",
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"%-*s %*g %-*s => %*g",
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tic80_size_name, itable[indx].name,
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input),
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SIZE_HEX + SIZE_DECIMAL + 3, "",
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SIZE_HEX + SIZE_DECIMAL, sim_fpu_2d (&result));
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}
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/* Trace the result of an FPU operation with 1 floating point input and a floating point output */
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void
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tic80_trace_fpu1 (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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int indx,
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sim_fpu result)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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trace_one_insn (sd, cpu, cia.ip, 1,
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itable[indx].file, itable[indx].line_nr, "fpu",
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"%-*s %-*s %-*s => %*g",
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tic80_size_name, itable[indx].name,
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SIZE_HEX + SIZE_DECIMAL + 3, "",
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SIZE_HEX + SIZE_DECIMAL + 3, "",
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SIZE_HEX + SIZE_DECIMAL, sim_fpu_2d (&result));
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}
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/* Trace the result of an FPU operation with 1 integer input and an integer output */
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void
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tic80_trace_fpu2i (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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int indx,
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unsigned32 result,
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sim_fpu input1,
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sim_fpu input2)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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trace_one_insn (sd, cpu, cia.ip, 1,
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itable[indx].file, itable[indx].line_nr, "fpu",
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"%-*s %*f %*f => 0x%.*lx %-*ld",
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tic80_size_name, itable[indx].name,
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input1),
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input2),
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SIZE_HEX, result, SIZE_DECIMAL, (long)(signed32)result);
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}
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/* Trace the result of a NOP operation */
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char *
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tic80_trace_nop (int indx)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%s", itable[indx].name);
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return tic80_trace_buffer;
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}
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/* Trace the result of a data sink with one input */
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char *
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tic80_trace_sink1 (int indx, unsigned32 input)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, input, SIZE_DECIMAL, (long)(signed32)input);
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return tic80_trace_buffer;
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}
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/* Trace the result of a data sink with two inputs */
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char *
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tic80_trace_sink2 (int indx, unsigned32 input1, unsigned32 input2)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld 0x%.*lx/%*ld",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, input1, SIZE_DECIMAL, (long)(signed32)input1,
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SIZE_HEX, input2, SIZE_DECIMAL, (long)(signed32)input2);
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return tic80_trace_buffer;
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}
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/* Trace the result of a data sink with three inputs */
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char *
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tic80_trace_sink3 (int indx, unsigned32 input1, unsigned32 input2, unsigned32 input3)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld 0x%.*lx/%*ld 0x%.*lx/%*ld",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, input1, SIZE_DECIMAL, (long)(signed32)input1,
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SIZE_HEX, input2, SIZE_DECIMAL, (long)(signed32)input2,
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SIZE_HEX, input3, SIZE_DECIMAL, (long)(signed32)input3);
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return tic80_trace_buffer;
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}
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/* Trace the result of a conditional branch operation */
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char *
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tic80_trace_cond_br (int indx,
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int jump_p,
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unsigned32 cond,
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unsigned32 target)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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if (jump_p)
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sprintf (tic80_trace_buffer,
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"%-*s 0x%.*lx %*s 0x%.*lx/%*ld => 0x%.*lx",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, target, SIZE_DECIMAL, "",
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SIZE_HEX, cond, SIZE_DECIMAL, (long)(signed32)cond,
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SIZE_HEX, target);
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else
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sprintf (tic80_trace_buffer,
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"%-*s 0x%.*lx %*s 0x%.*lx/%*ld => [fallthrough]",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, target, SIZE_DECIMAL, "",
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SIZE_HEX, cond, SIZE_DECIMAL, (long)(signed32)cond);
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return tic80_trace_buffer;
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}
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/* Trace the result of a unconditional branch operation */
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char *
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tic80_trace_ucond_br (int indx,
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unsigned32 target)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer,
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"%-*s 0x%.*lx %*s => 0x%.*lx",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, target, (SIZE_DECIMAL*2) + SIZE_HEX + 4, "",
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SIZE_HEX, target);
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return tic80_trace_buffer;
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}
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/* Trace the result of a load or store operation with 2 integer addresses
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and an integer output or input */
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void
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tic80_trace_ldst (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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int indx,
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int st_p,
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int m_p,
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int s_p,
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unsigned32 value,
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unsigned32 input1,
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unsigned32 input2)
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{
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char name[40];
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if (!tic80_size_name)
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tic80_init_trace ();
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strcpy (name, itable[indx].name);
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if (m_p)
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strcat (name, ":m");
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if (s_p)
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strcat (name, ":s");
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trace_one_insn (sd, cpu, cia.ip, 1,
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itable[indx].file, itable[indx].line_nr, "memory",
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"%-*s 0x%.*lx/%*ld 0x%.*lx/%*ld %s 0x%.*lx/%*ld",
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tic80_size_name, name,
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SIZE_HEX, input1, SIZE_DECIMAL, (long)(signed32)input1,
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SIZE_HEX, input2, SIZE_DECIMAL, (long)(signed32)input2,
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(!st_p) ? "=>" : "<=",
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SIZE_HEX, value, SIZE_DECIMAL, (long)(signed32)value);
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}
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#endif /* WITH_TRACE */
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