/* libc.c -- dummy C library simulation
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/* libc.c -- dummy C library simulation
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Debugger LIBC functions. Working, but VERY, VERY ugly written.
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/* Debugger LIBC functions. Working, but VERY, VERY ugly written.
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I wrote following code when basic simulator started to work and I was
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I wrote following code when basic simulator started to work and I was
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desperate to use some PRINTFs in my debugged code. And it was
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desperate to use some PRINTFs in my debugged code. And it was
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also used to get some output from Dhrystone MIPS benchmark. */
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also used to get some output from Dhrystone MIPS benchmark. */
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#include <stdio.h>
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#include <stdio.h>
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#include <string.h>
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#include <string.h>
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#include <errno.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include "config.h"
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#include "config.h"
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#ifdef HAVE_INTTYPES_H
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#include <inttypes.h>
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#endif
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#endif
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#include "port.h"
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#include "port.h"
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#include "arch.h"
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#include "arch.h"
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#include "abstract.h"
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#include "abstract.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "debug.h"
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#include "debug.h"
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/* Length of PRINTF format string */
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/* Length of PRINTF format string */
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#define FMTLEN 2000
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#define FMTLEN 2000
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char fmtstr[FMTLEN];
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char fmtstr[FMTLEN];
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char *simgetstr(oraddr_t stackaddr, unsigned long regparam)
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char *simgetstr(oraddr_t stackaddr, unsigned long regparam)
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{
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{
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oraddr_t fmtaddr;
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oraddr_t fmtaddr;
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int i;
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int i;
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int breakpoint = 0;
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int breakpoint = 0;
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fmtaddr = regparam;
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fmtaddr = regparam;
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i = 0;
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i = 0;
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while (eval_direct8(fmtaddr,&breakpoint,1,0) != '\0') {
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while (eval_direct8(fmtaddr,&breakpoint,1,0) != '\0') {
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fmtstr[i++] = eval_direct8(fmtaddr,&breakpoint,1,0);
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fmtstr[i++] = eval_direct8(fmtaddr,&breakpoint,1,0);
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fmtaddr++;
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fmtaddr++;
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if (i == FMTLEN - 1)
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if (i == FMTLEN - 1)
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break;
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break;
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}
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}
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fmtstr[i] = '\0';
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fmtstr[i] = '\0';
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return fmtstr;
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return fmtstr;
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}
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}
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void simprintf(oraddr_t stackaddr, unsigned long regparam)
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void simprintf(oraddr_t stackaddr, unsigned long regparam)
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{
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{
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FILE *f;
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FILE *f;
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int breakpoint = 0;
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int breakpoint = 0;
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simgetstr(stackaddr, regparam);
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simgetstr(stackaddr, regparam);
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debug(6, "simprintf: stackaddr: 0x%"PRIxADDR"\n", stackaddr);
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debug(6, "simprintf: stackaddr: 0x%"PRIxADDR"\n", stackaddr);
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if ((f = fopen(config.sim.fstdout, "a+"))) {
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if ((f = fopen(config.sim.fstdout, "a+"))) {
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uint32_t arg;
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uint32_t arg;
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oraddr_t argaddr;
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oraddr_t argaddr;
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char *fmtstrend;
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char *fmtstrend;
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char *fmtstrpart = fmtstr;
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char *fmtstrpart = fmtstr;
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int tee_exe_log;
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int tee_exe_log;
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#if STACK_ARGS
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#if STACK_ARGS
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argaddr = stackaddr;
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argaddr = stackaddr;
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#else
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#else
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argaddr = 3;
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argaddr = 3;
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#endif
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#endif
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tee_exe_log = (config.sim.exe_log && (config.sim.exe_log_type == EXE_LOG_SOFTWARE || config.sim.exe_log_type == EXE_LOG_SIMPLE)
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tee_exe_log = (config.sim.exe_log && (config.sim.exe_log_type == EXE_LOG_SOFTWARE || config.sim.exe_log_type == EXE_LOG_SIMPLE)
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&& config.sim.exe_log_start <= runtime.cpu.instructions && (config.sim.exe_log_end <= 0 || runtime.cpu.instructions <= config.sim.exe_log_end));
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&& config.sim.exe_log_start <= runtime.cpu.instructions && (config.sim.exe_log_end <= 0 || runtime.cpu.instructions <= config.sim.exe_log_end));
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if (tee_exe_log) fprintf (runtime.sim.fexe_log, "SIMPRINTF: ");
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if (tee_exe_log) fprintf (runtime.sim.fexe_log, "SIMPRINTF: ");
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debug(6, "simprintf: %s\n", fmtstrpart);
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debug(6, "simprintf: %s\n", fmtstrpart);
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while(strlen(fmtstrpart)) {
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while(strlen(fmtstrpart)) {
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debug(6, "simprintf(): 1");
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debug(6, "simprintf(): 1");
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if ((fmtstrend = strstr(fmtstrpart + 1, "%")))
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if ((fmtstrend = strstr(fmtstrpart + 1, "%")))
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*fmtstrend = '\0';
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*fmtstrend = '\0';
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debug(6," 2");
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debug(6," 2");
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if (strstr(fmtstrpart, "%")) {
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if (strstr(fmtstrpart, "%")) {
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char *tmp;
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char *tmp;
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int string = 0;
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int string = 0;
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debug(6, " 3");
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debug(6, " 3");
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#if STACK_ARGS
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#if STACK_ARGS
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arg = eval_direct32(argaddr,&breakpoint,1,0);
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arg = eval_direct32(argaddr,&breakpoint,1,0);
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argaddr += 4;
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argaddr += 4;
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#else
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#else
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{
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{
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unsigned char regstr[5];
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unsigned char regstr[5];
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sprintf(regstr, "r%"PRIxADDR, ++argaddr);
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sprintf(regstr, "r%"PRIxADDR, ++argaddr);
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arg = evalsim_reg(atoi(regstr));
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arg = evalsim_reg(atoi(regstr));
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}
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}
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#endif
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#endif
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debug(6, " 4: fmtstrpart=%p fmtstrpart=%s arg=0x%08"PRIx32"\n",
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debug(6, " 4: fmtstrpart=%p fmtstrpart=%s arg=0x%08"PRIx32"\n",
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fmtstrpart, fmtstrpart, arg);
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fmtstrpart, fmtstrpart, arg);
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tmp = fmtstrpart;
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tmp = fmtstrpart;
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if (*tmp == '%') {
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if (*tmp == '%') {
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tmp++;
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tmp++;
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while (*tmp == '-' || *tmp >= '0' && *tmp <= '9') tmp++;
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while (*tmp == '-' || *tmp >= '0' && *tmp <= '9') tmp++;
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if (*tmp == 's') string = 1;
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if (*tmp == 's') string = 1;
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}
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}
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if (string) {
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if (string) {
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int len = 0;
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int len = 0;
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char *str;
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char *str;
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for(; eval_direct8(arg++,&breakpoint,1,0); len++);
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for(; eval_direct8(arg++,&breakpoint,1,0); len++);
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len++; /* for null char */
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len++; /* for null char */
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arg -= len;
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arg -= len;
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str = (char *)malloc(len);
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str = (char *)malloc(len);
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len = 0;
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len = 0;
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for(; eval_direct8(arg,&breakpoint,1,0); len++)
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for(; eval_direct8(arg,&breakpoint,1,0); len++)
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*(str+len) = eval_direct8(arg++,&breakpoint,1,0);
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*(str+len) = eval_direct8(arg++,&breakpoint,1,0);
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*(str+len) = eval_direct8(arg,&breakpoint,1,0); /* null ch */
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*(str+len) = eval_direct8(arg,&breakpoint,1,0); /* null ch */
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debug(6, "4a: len=%d str=%s\n", len, str);
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debug(6, "4a: len=%d str=%s\n", len, str);
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debug(6, "4b:");
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debug(6, "4b:");
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fprintf(f, fmtstrpart, str);
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fprintf(f, fmtstrpart, str);
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if (tee_exe_log) fprintf(runtime.sim.fexe_log, fmtstrpart, str);
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if (tee_exe_log) fprintf(runtime.sim.fexe_log, fmtstrpart, str);
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free(str);
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free(str);
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} else {
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} else {
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fprintf(f, fmtstrpart, arg);
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fprintf(f, fmtstrpart, arg);
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if (tee_exe_log) fprintf(runtime.sim.fexe_log, fmtstrpart, arg);
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if (tee_exe_log) fprintf(runtime.sim.fexe_log, fmtstrpart, arg);
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}
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}
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} else {
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} else {
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debug(6, " 5");
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debug(6, " 5");
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fprintf(f, fmtstrpart);
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fprintf(f, fmtstrpart);
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if (tee_exe_log) fprintf(runtime.sim.fexe_log, fmtstrpart);
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if (tee_exe_log) fprintf(runtime.sim.fexe_log, fmtstrpart);
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debug(6, fmtstrpart);
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debug(6, fmtstrpart);
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}
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}
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if (!fmtstrend)
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if (!fmtstrend)
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break;
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break;
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debug(6, " 6");
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debug(6, " 6");
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fmtstrpart = fmtstrend;
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fmtstrpart = fmtstrend;
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*fmtstrpart = '%';
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*fmtstrpart = '%';
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debug(6, " 7");
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debug(6, " 7");
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}
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}
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debug(6," 8\n");
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debug(6," 8\n");
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if (fclose(f))
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if (fclose(f))
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perror(strerror(errno));
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perror(strerror(errno));
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}
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}
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else
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else
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perror(strerror(errno));
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perror(strerror(errno));
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}
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}
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