From: Michael Meissner Date: Mon, 2 Oct 1995 15:47:57 +0000 (+0000) Subject: Add switch processing in gdb. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8eab189bcef119a2350135bf02c191606c22cf1d;p=binutils-gdb.git Add switch processing in gdb. --- diff --git a/sim/ppc/ChangeLog b/sim/ppc/ChangeLog index dfaef04f4d4..ed3b9004786 100644 --- a/sim/ppc/ChangeLog +++ b/sim/ppc/ChangeLog @@ -1,3 +1,10 @@ +Mon Oct 2 11:46:37 1995 Michael Meissner + + * sim_calls.c (sim_open): Add argument processing to add the same + switches main.c accepts for the standalone processor. + * main.c (main): Add comment saying to update sim_calls.c when + adding switches. + Sun Oct 1 13:52:59 1995 Michael Meissner * main.c (printf_filtered): Correct to match new prototype. diff --git a/sim/ppc/main.c b/sim/ppc/main.c index 3890dc15d3e..31c85e097ae 100644 --- a/sim/ppc/main.c +++ b/sim/ppc/main.c @@ -82,7 +82,8 @@ main(int argc, char **argv) int letter; int i; - /* check for arguments - FIXME use getopt */ + /* check for arguments -- note sim_calls.c also contains argument processing + code for the simulator linked within gdb. */ while ((letter = getopt (argc, argv, "acCipst")) != EOF) { switch (letter) { diff --git a/sim/ppc/sim_calls.c b/sim/ppc/sim_calls.c new file mode 100644 index 00000000000..542267c8bd5 --- /dev/null +++ b/sim/ppc/sim_calls.c @@ -0,0 +1,302 @@ +/* This file is part of the program psim. + + Copyright (C) 1994-1995, Andrew Cagney + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + */ + + +#include /* FIXME - should be machine dependant version */ +#include +#include +#include +#include + +#include "basics.h" +#include "psim.h" + +#include "../../gdb/defs.h" + +#include "devices.h" + +#include "../../gdb/remote-sim.h" + + +/* Structures used by the simulator, for gdb just have static structures */ + +static psim *simulator; +static int nr_cpus; +static char *register_names[] = REGISTER_NAMES; + +void +sim_open (char *args) +{ + int i; + + /* trace the call */ + TRACE(trace_gdb, ("sim_open(args=%s) called\n", args ? args : "(null)")); + + if (args) { + char *buf = (char *)alloca (strlen (args) + 1); + char *p; + strcpy (buf, args); + + p = strtok (args, " \t"); + while (p != (char *)0) { + if (*p != '-') + error ("Argument is not an option '%s'", p); + + else { + /* check arguments -- note, main.c also contains argument processing + code for the standalone emulator. */ + while (*++p != '\0') { + switch (*p) { + default: + error ("Usage: target sim [ -a -p -c -C -s -i -t ]\n"); + break; + case 'a': + for (i = 0; i < nr_trace; i++) + trace[i] = 1; + break; + case 'p': + trace[trace_cpu] = trace[trace_semantics] = 1; + break; + case 'c': + trace[trace_core] = 1; + break; + case 'C': + trace[trace_console_device] = 1; + break; + case 's': + trace[trace_create_stack] = 1; + break; + case 'i': + trace[trace_icu_device] = 1; + break; + case 't': + trace[trace_device_tree] = 1; + break; + } + } + } + + p = strtok ((char *)0, " \t"); + } + } + + /* do something */ + TRACE(trace_tbd, ("sim_open() - TBD - should parse the arguments\n")); + TRACE(trace_tbd, ("sim_open() - TBD - can not create simulator here as do not have description of it\n")); +} + + +void +sim_close (int quitting) +{ + TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting)); + /* nothing to do */ +} + + +int +sim_load (char *prog, int from_tty) +{ + TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n", + prog, from_tty)); + + /* sanity check */ + if (prog == NULL) { + error ("sim_load() - TBD - read stan shebs e-mail about how to find the program name?\n"); + return -1; + } + TRACE(trace_tbd, ("sim_load() - TBD - parse that prog stripping things like quotes\n")); + + /* create the simulator */ + TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n")); + nr_cpus = (WITH_SMP ? WITH_SMP : 1); + simulator = psim_create(prog, nr_cpus); + + /* bring in all the data section */ + psim_load(simulator); + + return 0; +} + + +void +sim_kill (void) +{ + TRACE(trace_gdb, ("sim_kill(void) called\n")); + /* do nothing, nothing to do */ +} + + +int +sim_read (SIM_ADDR mem, unsigned char *buf, int length) +{ + return psim_read_memory(simulator, nr_cpus, buf, mem, length, + raw_transfer); +} + + +int +sim_write (SIM_ADDR mem, unsigned char *buf, int length) +{ + return psim_write_memory(simulator, nr_cpus, buf, mem, length, + raw_transfer, 1/*violate_ro*/); +} + + +void +sim_fetch_register (int regno, unsigned char *buf) +{ + if (simulator == NULL) { + return; + } + + psim_read_register(simulator, nr_cpus, buf, register_names[regno], + raw_transfer); +} + + +void +sim_store_register (int regno, unsigned char *buf) +{ + if (simulator == NULL) + return; + + psim_write_register(simulator, nr_cpus, buf, register_names[regno], + raw_transfer); +} + + +void +sim_info (int verbose) +{ + TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose)); + TRACE(trace_tbd, ("sim_info(verbose=%d) should do something\n")); + /* FIXME: */ +} + + +void +sim_create_inferior (SIM_ADDR start_address, char **argv, char **envp) +{ + unsigned_word entry_point = start_address; + + TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n", + start_address)); + + psim_load(simulator); + psim_stack(simulator, argv, envp); + + psim_write_register(simulator, -1 /* all start at same PC */, + &entry_point, "pc", cooked_transfer); +} + + +static volatile int sim_should_run; + +void +sim_stop_reason (enum sim_stop *reason, int *sigrc) +{ + psim_status status = psim_get_status(simulator); + + switch (CURRENT_ENVIRONMENT) { + + case VIRTUAL_ENVIRONMENT: + switch (status.reason) { + case was_continuing: + *reason = sim_stopped; + *sigrc = SIGTRAP; + if (sim_should_run) { + error("sim_stop_reason() unknown reason for halt\n"); + } + break; + case was_trap: + *reason = sim_stopped; + *sigrc = SIGTRAP; + break; + case was_exited: + *reason = sim_exited; + *sigrc = 0; + break; + case was_signalled: + *reason = sim_signalled; + *sigrc = status.signal; + break; + } + break; + + case OPERATING_ENVIRONMENT: + *reason = sim_stopped; + *sigrc = SIGTRAP; + break; + + default: + error("sim_stop_reason() - unknown environment\n"); + + } +} + + + +/* Run (or resume) the program. */ +static void +sim_ctrl_c() +{ + sim_should_run = 0; +} + +void +sim_resume (int step, int siggnal) +{ + void (*prev) (); + unsigned_word program_counter; + + prev = signal(SIGINT, sim_ctrl_c); + sim_should_run = 1; + + if (step) + psim_step(simulator); + else + psim_run_until_stop(simulator, &sim_should_run); + + signal(SIGINT, prev); +} + +void +sim_do_command(char *cmd) +{ + TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n", cmd)); +} + +/****/ + +void * +zalloc(long size) +{ + void *memory = (void*)xmalloc(size); + if (memory == NULL) + error("xmalloc failed\n"); + bzero(memory, size); + return memory; +} + +void zfree(void *data) +{ + mfree(NULL, data); +}