qemu/hw/semihosting/config.c
Markus Armbruster d5938f29fe Clean up inclusion of sysemu/sysemu.h
In my "build everything" tree, changing sysemu/sysemu.h triggers a
recompile of some 5400 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

Almost a third of its inclusions are actually superfluous.  Delete
them.  Downgrade two more to qapi/qapi-types-run-state.h, and move one
from char/serial.h to char/serial.c.

hw/semihosting/config.c, monitor/monitor.c, qdev-monitor.c, and
stubs/semihost.c define variables declared in sysemu/sysemu.h without
including it.  The compiler is cool with that, but include it anyway.

This doesn't reduce actual use much, as it's still included into
widely included headers.  The next commit will tackle that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-27-armbru@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2019-08-16 13:31:53 +02:00

188 lines
5.2 KiB
C

/*
* Semihosting configuration
*
* Copyright (c) 2015 Imagination Technologies
* Copyright (c) 2019 Linaro Ltd
*
* This controls the configuration of semihosting for all guest
* targets that support it. Architecture specific handling is handled
* in target/HW/HW-semi.c
*
* Semihosting is sightly strange in that it is also supported by some
* linux-user targets. However in that use case no configuration of
* the outputs and command lines is supported.
*
* The config module is common to all softmmu targets however as vl.c
* needs to link against the helpers.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qemu/error-report.h"
#include "hw/semihosting/semihost.h"
#include "chardev/char.h"
#include "sysemu/sysemu.h"
QemuOptsList qemu_semihosting_config_opts = {
.name = "semihosting-config",
.implied_opt_name = "enable",
.head = QTAILQ_HEAD_INITIALIZER(qemu_semihosting_config_opts.head),
.desc = {
{
.name = "enable",
.type = QEMU_OPT_BOOL,
}, {
.name = "target",
.type = QEMU_OPT_STRING,
}, {
.name = "chardev",
.type = QEMU_OPT_STRING,
}, {
.name = "arg",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
typedef struct SemihostingConfig {
bool enabled;
SemihostingTarget target;
Chardev *chardev;
const char **argv;
int argc;
const char *cmdline; /* concatenated argv */
} SemihostingConfig;
static SemihostingConfig semihosting;
static const char *semihost_chardev;
bool semihosting_enabled(void)
{
return semihosting.enabled;
}
SemihostingTarget semihosting_get_target(void)
{
return semihosting.target;
}
const char *semihosting_get_arg(int i)
{
if (i >= semihosting.argc) {
return NULL;
}
return semihosting.argv[i];
}
int semihosting_get_argc(void)
{
return semihosting.argc;
}
const char *semihosting_get_cmdline(void)
{
if (semihosting.cmdline == NULL && semihosting.argc > 0) {
semihosting.cmdline = g_strjoinv(" ", (gchar **)semihosting.argv);
}
return semihosting.cmdline;
}
static int add_semihosting_arg(void *opaque,
const char *name, const char *val,
Error **errp)
{
SemihostingConfig *s = opaque;
if (strcmp(name, "arg") == 0) {
s->argc++;
/* one extra element as g_strjoinv() expects NULL-terminated array */
s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
s->argv[s->argc - 1] = val;
s->argv[s->argc] = NULL;
}
return 0;
}
/* Use strings passed via -kernel/-append to initialize semihosting.argv[] */
void semihosting_arg_fallback(const char *file, const char *cmd)
{
char *cmd_token;
/* argv[0] */
add_semihosting_arg(&semihosting, "arg", file, NULL);
/* split -append and initialize argv[1..n] */
cmd_token = strtok(g_strdup(cmd), " ");
while (cmd_token) {
add_semihosting_arg(&semihosting, "arg", cmd_token, NULL);
cmd_token = strtok(NULL, " ");
}
}
Chardev *semihosting_get_chardev(void)
{
return semihosting.chardev;
}
void qemu_semihosting_enable(void)
{
semihosting.enabled = true;
semihosting.target = SEMIHOSTING_TARGET_AUTO;
}
int qemu_semihosting_config_options(const char *optarg)
{
QemuOptsList *opt_list = qemu_find_opts("semihosting-config");
QemuOpts *opts = qemu_opts_parse_noisily(opt_list, optarg, false);
semihosting.enabled = true;
if (opts != NULL) {
semihosting.enabled = qemu_opt_get_bool(opts, "enable",
true);
const char *target = qemu_opt_get(opts, "target");
/* setup of chardev is deferred until they are initialised */
semihost_chardev = qemu_opt_get(opts, "chardev");
if (target != NULL) {
if (strcmp("native", target) == 0) {
semihosting.target = SEMIHOSTING_TARGET_NATIVE;
} else if (strcmp("gdb", target) == 0) {
semihosting.target = SEMIHOSTING_TARGET_GDB;
} else if (strcmp("auto", target) == 0) {
semihosting.target = SEMIHOSTING_TARGET_AUTO;
} else {
error_report("unsupported semihosting-config %s",
optarg);
return 1;
}
} else {
semihosting.target = SEMIHOSTING_TARGET_AUTO;
}
/* Set semihosting argument count and vector */
qemu_opt_foreach(opts, add_semihosting_arg,
&semihosting, NULL);
} else {
error_report("unsupported semihosting-config %s", optarg);
return 1;
}
return 0;
}
void qemu_semihosting_connect_chardevs(void)
{
/* We had to defer this until chardevs were created */
if (semihost_chardev) {
Chardev *chr = qemu_chr_find(semihost_chardev);
if (chr == NULL) {
error_report("semihosting chardev '%s' not found",
semihost_chardev);
exit(1);
}
semihosting.chardev = chr;
}
}