introduce environment variables for all qemu-user options
(Edits by Riku Voipio to apply to current HEAD) Rework option parsing code for linux-user in a table-driven manner to allow environment variables for all commandline options. Also generate usage() output from option table. Fix complains from checkpatch.pl, also have envlist global Signed-off-by: Johannes Schauer <j.schauer@email.de> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Johannes Schauer
Riku Voipio
parent
a790ae389b
commit
fc9c54124d
@ -39,6 +39,11 @@
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char *exec_path;
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int singlestep;
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const char *filename;
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const char *argv0;
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int gdbstub_port;
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envlist_t *envlist;
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const char *cpu_model;
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unsigned long mmap_min_addr;
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#if defined(CONFIG_USE_GUEST_BASE)
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unsigned long guest_base;
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@ -46,6 +51,8 @@ int have_guest_base;
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unsigned long reserved_va;
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#endif
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static void usage(void);
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static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
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const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
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@ -2879,57 +2886,6 @@ void cpu_loop(CPUS390XState *env)
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#endif /* TARGET_S390X */
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static void version(void)
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{
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printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION
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", Copyright (c) 2003-2008 Fabrice Bellard\n");
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}
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static void usage(void)
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{
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version();
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printf("usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
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"Linux CPU emulator (compiled for %s emulation)\n"
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"\n"
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"Standard options:\n"
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"-h print this help\n"
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"-version display version information and exit\n"
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"-g port wait gdb connection to port\n"
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"-L path set the elf interpreter prefix (default=%s)\n"
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"-s size set the stack size in bytes (default=%ld)\n"
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"-cpu model select CPU (-cpu ? for list)\n"
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"-drop-ld-preload drop LD_PRELOAD for target process\n"
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"-E var=value sets/modifies targets environment variable(s)\n"
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"-U var unsets targets environment variable(s)\n"
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"-0 argv0 forces target process argv[0] to be argv0\n"
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#if defined(CONFIG_USE_GUEST_BASE)
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"-B address set guest_base address to address\n"
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"-R size reserve size bytes for guest virtual address space\n"
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#endif
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"\n"
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"Debug options:\n"
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"-d options activate log (logfile=%s)\n"
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"-p pagesize set the host page size to 'pagesize'\n"
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"-singlestep always run in singlestep mode\n"
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"-strace log system calls\n"
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"\n"
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"Environment variables:\n"
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"QEMU_STRACE Print system calls and arguments similar to the\n"
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" 'strace' program. Enable by setting to any value.\n"
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"You can use -E and -U options to set/unset environment variables\n"
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"for target process. It is possible to provide several variables\n"
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"by repeating the option. For example:\n"
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" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
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"Note that if you provide several changes to single variable\n"
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"last change will stay in effect.\n"
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,
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TARGET_ARCH,
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interp_prefix,
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guest_stack_size,
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DEBUG_LOGFILE);
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exit(1);
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}
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THREAD CPUState *thread_env;
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void task_settid(TaskState *ts)
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@ -2965,26 +2921,358 @@ void init_task_state(TaskState *ts)
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}
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ts->sigqueue_table[i].next = NULL;
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}
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static void handle_arg_help(const char *arg)
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{
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usage();
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}
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static void handle_arg_log(const char *arg)
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{
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int mask;
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const CPULogItem *item;
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mask = cpu_str_to_log_mask(arg);
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if (!mask) {
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printf("Log items (comma separated):\n");
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for (item = cpu_log_items; item->mask != 0; item++) {
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printf("%-10s %s\n", item->name, item->help);
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}
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exit(1);
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}
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cpu_set_log(mask);
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}
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static void handle_arg_set_env(const char *arg)
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{
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char *r, *p, *token;
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r = p = strdup(arg);
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while ((token = strsep(&p, ",")) != NULL) {
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if (envlist_setenv(envlist, token) != 0) {
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usage();
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}
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}
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free(r);
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}
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static void handle_arg_unset_env(const char *arg)
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{
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char *r, *p, *token;
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r = p = strdup(arg);
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while ((token = strsep(&p, ",")) != NULL) {
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if (envlist_unsetenv(envlist, token) != 0) {
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usage();
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}
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}
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free(r);
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}
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static void handle_arg_argv0(const char *arg)
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{
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argv0 = strdup(arg);
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}
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static void handle_arg_stack_size(const char *arg)
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{
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char *p;
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guest_stack_size = strtoul(arg, &p, 0);
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if (guest_stack_size == 0) {
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usage();
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}
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if (*p == 'M') {
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guest_stack_size *= 1024 * 1024;
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} else if (*p == 'k' || *p == 'K') {
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guest_stack_size *= 1024;
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}
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}
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static void handle_arg_ld_prefix(const char *arg)
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{
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interp_prefix = strdup(arg);
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}
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static void handle_arg_pagesize(const char *arg)
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{
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qemu_host_page_size = atoi(arg);
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if (qemu_host_page_size == 0 ||
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(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
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fprintf(stderr, "page size must be a power of two\n");
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exit(1);
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}
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}
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static void handle_arg_gdb(const char *arg)
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{
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gdbstub_port = atoi(arg);
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}
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static void handle_arg_uname(const char *arg)
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{
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qemu_uname_release = strdup(arg);
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}
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static void handle_arg_cpu(const char *arg)
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{
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cpu_model = strdup(arg);
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if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
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/* XXX: implement xxx_cpu_list for targets that still miss it */
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#if defined(cpu_list_id)
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cpu_list_id(stdout, &fprintf, "");
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#elif defined(cpu_list)
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cpu_list(stdout, &fprintf); /* deprecated */
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#endif
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exit(1);
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}
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}
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#if defined(CONFIG_USE_GUEST_BASE)
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static void handle_arg_guest_base(const char *arg)
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{
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guest_base = strtol(arg, NULL, 0);
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have_guest_base = 1;
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}
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static void handle_arg_reserved_va(const char *arg)
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{
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char *p;
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int shift = 0;
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reserved_va = strtoul(arg, &p, 0);
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switch (*p) {
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case 'k':
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case 'K':
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shift = 10;
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break;
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case 'M':
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shift = 20;
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break;
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case 'G':
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shift = 30;
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break;
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}
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if (shift) {
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unsigned long unshifted = reserved_va;
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p++;
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reserved_va <<= shift;
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if (((reserved_va >> shift) != unshifted)
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#if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
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|| (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
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#endif
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) {
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fprintf(stderr, "Reserved virtual address too big\n");
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exit(1);
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}
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}
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if (*p) {
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fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
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exit(1);
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}
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}
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#endif
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static void handle_arg_singlestep(const char *arg)
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{
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singlestep = 1;
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}
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static void handle_arg_strace(const char *arg)
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{
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do_strace = 1;
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}
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static void handle_arg_version(const char *arg)
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{
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printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION
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", Copyright (c) 2003-2008 Fabrice Bellard\n");
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}
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struct qemu_argument {
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const char *argv;
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const char *env;
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bool has_arg;
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void (*handle_opt)(const char *arg);
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const char *example;
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const char *help;
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};
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struct qemu_argument arg_table[] = {
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{"h", "", false, handle_arg_help,
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"", "print this help"},
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{"g", "QEMU_GDB", true, handle_arg_gdb,
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"port", "wait gdb connection to 'port'"},
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{"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix,
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"path", "set the elf interpreter prefix to 'path'"},
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{"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size,
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"size", "set the stack size to 'size' bytes"},
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{"cpu", "QEMU_CPU", true, handle_arg_cpu,
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"model", "select CPU (-cpu ? for list)"},
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{"E", "QEMU_SET_ENV", true, handle_arg_set_env,
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"var=value", "sets targets environment variable (see below)"},
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{"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env,
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"var", "unsets targets environment variable (see below)"},
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{"0", "QEMU_ARGV0", true, handle_arg_argv0,
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"argv0", "forces target process argv[0] to be 'argv0'"},
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{"r", "QEMU_UNAME", true, handle_arg_uname,
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"uname", "set qemu uname release string to 'uname'"},
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#if defined(CONFIG_USE_GUEST_BASE)
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{"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base,
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"address", "set guest_base address to 'address'"},
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{"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va,
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"size", "reserve 'size' bytes for guest virtual address space"},
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#endif
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{"d", "QEMU_LOG", true, handle_arg_log,
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"options", "activate log"},
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{"p", "QEMU_PAGESIZE", true, handle_arg_pagesize,
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"pagesize", "set the host page size to 'pagesize'"},
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{"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep,
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"", "run in singlestep mode"},
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{"strace", "QEMU_STRACE", false, handle_arg_strace,
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"", "log system calls"},
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{"version", "QEMU_VERSION", false, handle_arg_version,
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"", "log system calls"},
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{NULL, NULL, false, NULL, NULL, NULL}
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};
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static void usage(void)
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{
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struct qemu_argument *arginfo;
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int maxarglen;
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int maxenvlen;
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printf("usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
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"Linux CPU emulator (compiled for " TARGET_ARCH " emulation)\n"
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"\n"
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"Options and associated environment variables:\n"
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"\n");
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maxarglen = maxenvlen = 0;
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for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
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if (strlen(arginfo->env) > maxenvlen) {
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maxenvlen = strlen(arginfo->env);
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}
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if (strlen(arginfo->argv) > maxarglen) {
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maxarglen = strlen(arginfo->argv);
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}
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}
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printf("%-*s%-*sDescription\n", maxarglen+3, "Argument",
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maxenvlen+1, "Env-variable");
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for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
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if (arginfo->has_arg) {
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printf("-%s %-*s %-*s %s\n", arginfo->argv,
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(int)(maxarglen-strlen(arginfo->argv)), arginfo->example,
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maxenvlen, arginfo->env, arginfo->help);
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} else {
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printf("-%-*s %-*s %s\n", maxarglen+1, arginfo->argv,
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maxenvlen, arginfo->env,
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arginfo->help);
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}
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}
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printf("\n"
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"Defaults:\n"
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"QEMU_LD_PREFIX = %s\n"
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"QEMU_STACK_SIZE = %ld byte\n"
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"QEMU_LOG = %s\n",
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interp_prefix,
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guest_stack_size,
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DEBUG_LOGFILE);
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printf("\n"
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"You can use -E and -U options or the QEMU_SET_ENV and\n"
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"QEMU_UNSET_ENV environment variables to set and unset\n"
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"environment variables for the target process.\n"
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"It is possible to provide several variables by separating them\n"
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"by commas in getsubopt(3) style. Additionally it is possible to\n"
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"provide the -E and -U options multiple times.\n"
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"The following lines are equivalent:\n"
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" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
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" -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
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" QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
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"Note that if you provide several changes to a single variable\n"
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"the last change will stay in effect.\n");
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exit(1);
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}
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static int parse_args(int argc, char **argv)
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{
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const char *r;
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int optind;
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struct qemu_argument *arginfo;
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for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
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if (arginfo->env == NULL) {
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continue;
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}
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r = getenv(arginfo->env);
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if (r != NULL) {
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arginfo->handle_opt(r);
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}
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}
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optind = 1;
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for (;;) {
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if (optind >= argc) {
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break;
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}
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r = argv[optind];
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if (r[0] != '-') {
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break;
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}
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optind++;
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r++;
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if (!strcmp(r, "-")) {
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break;
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}
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for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
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if (!strcmp(r, arginfo->argv)) {
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if (optind >= argc) {
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usage();
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}
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arginfo->handle_opt(argv[optind]);
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if (arginfo->has_arg) {
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optind++;
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}
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break;
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}
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}
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/* no option matched the current argv */
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if (arginfo->handle_opt == NULL) {
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usage();
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}
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}
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if (optind >= argc) {
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usage();
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}
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filename = argv[optind];
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exec_path = argv[optind];
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return optind;
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}
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int main(int argc, char **argv, char **envp)
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{
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const char *filename;
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const char *cpu_model;
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const char *log_file = DEBUG_LOGFILE;
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const char *log_mask = NULL;
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struct target_pt_regs regs1, *regs = ®s1;
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struct image_info info1, *info = &info1;
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struct linux_binprm bprm;
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TaskState *ts;
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CPUState *env;
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int optind;
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const char *r;
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int gdbstub_port = 0;
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char **target_environ, **wrk;
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char **target_argv;
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int target_argc;
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envlist_t *envlist = NULL;
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const char *argv0 = NULL;
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int i;
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int ret;
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@ -3019,156 +3307,9 @@ int main(int argc, char **argv, char **envp)
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cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
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#endif
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optind = 1;
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for(;;) {
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if (optind >= argc)
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break;
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r = argv[optind];
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if (r[0] != '-')
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break;
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optind++;
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r++;
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if (!strcmp(r, "-")) {
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break;
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} else if (!strcmp(r, "d")) {
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if (optind >= argc) {
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break;
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}
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log_mask = argv[optind++];
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} else if (!strcmp(r, "D")) {
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if (optind >= argc) {
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break;
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}
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log_file = argv[optind++];
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} else if (!strcmp(r, "E")) {
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r = argv[optind++];
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if (envlist_setenv(envlist, r) != 0)
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usage();
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} else if (!strcmp(r, "ignore-environment")) {
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envlist_free(envlist);
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if ((envlist = envlist_create()) == NULL) {
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(void) fprintf(stderr, "Unable to allocate envlist\n");
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exit(1);
|
||||
}
|
||||
} else if (!strcmp(r, "U")) {
|
||||
r = argv[optind++];
|
||||
if (envlist_unsetenv(envlist, r) != 0)
|
||||
usage();
|
||||
} else if (!strcmp(r, "0")) {
|
||||
r = argv[optind++];
|
||||
argv0 = r;
|
||||
} else if (!strcmp(r, "s")) {
|
||||
if (optind >= argc)
|
||||
break;
|
||||
r = argv[optind++];
|
||||
guest_stack_size = strtoul(r, (char **)&r, 0);
|
||||
if (guest_stack_size == 0)
|
||||
usage();
|
||||
if (*r == 'M')
|
||||
guest_stack_size *= 1024 * 1024;
|
||||
else if (*r == 'k' || *r == 'K')
|
||||
guest_stack_size *= 1024;
|
||||
} else if (!strcmp(r, "L")) {
|
||||
interp_prefix = argv[optind++];
|
||||
} else if (!strcmp(r, "p")) {
|
||||
if (optind >= argc)
|
||||
break;
|
||||
qemu_host_page_size = atoi(argv[optind++]);
|
||||
if (qemu_host_page_size == 0 ||
|
||||
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
|
||||
fprintf(stderr, "page size must be a power of two\n");
|
||||
exit(1);
|
||||
}
|
||||
} else if (!strcmp(r, "g")) {
|
||||
if (optind >= argc)
|
||||
break;
|
||||
gdbstub_port = atoi(argv[optind++]);
|
||||
} else if (!strcmp(r, "r")) {
|
||||
qemu_uname_release = argv[optind++];
|
||||
} else if (!strcmp(r, "cpu")) {
|
||||
cpu_model = argv[optind++];
|
||||
if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
|
||||
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
||||
#if defined(cpu_list_id)
|
||||
cpu_list_id(stdout, &fprintf, "");
|
||||
#elif defined(cpu_list)
|
||||
cpu_list(stdout, &fprintf); /* deprecated */
|
||||
#endif
|
||||
exit(1);
|
||||
}
|
||||
#if defined(CONFIG_USE_GUEST_BASE)
|
||||
} else if (!strcmp(r, "B")) {
|
||||
guest_base = strtol(argv[optind++], NULL, 0);
|
||||
have_guest_base = 1;
|
||||
} else if (!strcmp(r, "R")) {
|
||||
char *p;
|
||||
int shift = 0;
|
||||
reserved_va = strtoul(argv[optind++], &p, 0);
|
||||
switch (*p) {
|
||||
case 'k':
|
||||
case 'K':
|
||||
shift = 10;
|
||||
break;
|
||||
case 'M':
|
||||
shift = 20;
|
||||
break;
|
||||
case 'G':
|
||||
shift = 30;
|
||||
break;
|
||||
}
|
||||
if (shift) {
|
||||
unsigned long unshifted = reserved_va;
|
||||
p++;
|
||||
reserved_va <<= shift;
|
||||
if (((reserved_va >> shift) != unshifted)
|
||||
#if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
|
||||
|| (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
|
||||
#endif
|
||||
) {
|
||||
fprintf(stderr, "Reserved virtual address too big\n");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
if (*p) {
|
||||
fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
|
||||
exit(1);
|
||||
}
|
||||
#endif
|
||||
} else if (!strcmp(r, "drop-ld-preload")) {
|
||||
(void) envlist_unsetenv(envlist, "LD_PRELOAD");
|
||||
} else if (!strcmp(r, "singlestep")) {
|
||||
singlestep = 1;
|
||||
} else if (!strcmp(r, "strace")) {
|
||||
do_strace = 1;
|
||||
} else if (!strcmp(r, "version")) {
|
||||
version();
|
||||
exit(0);
|
||||
} else {
|
||||
usage();
|
||||
}
|
||||
}
|
||||
/* init debug */
|
||||
cpu_set_log_filename(log_file);
|
||||
if (log_mask) {
|
||||
int mask;
|
||||
const CPULogItem *item;
|
||||
|
||||
mask = cpu_str_to_log_mask(log_mask);
|
||||
if (!mask) {
|
||||
printf("Log items (comma separated):\n");
|
||||
for (item = cpu_log_items; item->mask != 0; item++) {
|
||||
printf("%-10s %s\n", item->name, item->help);
|
||||
}
|
||||
exit(1);
|
||||
}
|
||||
cpu_set_log(mask);
|
||||
}
|
||||
|
||||
if (optind >= argc) {
|
||||
usage();
|
||||
}
|
||||
filename = argv[optind];
|
||||
exec_path = argv[optind];
|
||||
optind = parse_args(argc, argv);
|
||||
|
||||
/* Zero out regs */
|
||||
memset(regs, 0, sizeof(struct target_pt_regs));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user