2  *  qemu user main
4  *  Copyright (c) 2003-2008 Fabrice Bellard
21 #include "qemu/help-texts.h"
24 #include "qemu-version.h"
28 #include <linux/binfmts.h>
32 #include "user-internals.h"
35 #include "qemu/config-file.h"
37 #include "qemu/error-report.h"
41 #include "user/guest-base.h"
42 #include "user/page-protection.h"
44 #include "gdbstub/user.h"
45 #include "accel/accel-ops.h"
49 #include "qemu/guest-random.h"
53 #include "user/cpu_loop.h"
55 #include "fd-trans.h"
56 #include "signal-common.h"
58 #include "user-mmap.h"
60 #include "exec/page-vary.h"
87  * Used to implement backwards-compatibility for the `-strace`, and
89  * -strace, or vice versa.
94  * The last log mask given by the user in an environment variable or argument.
101  * When running 32-on-64 we should make sure we can fit all of the possible
107  * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
108  * of the address for the kernel.  Some cpus rely on this and user space
118 #   define MAX_RESERVED_VA(CPU)  ((1ul << TARGET_VIRT_ADDR_SPACE_BITS) - 1)
173         get_task_state(thread_cpu)->ts_tid = qemu_get_thread_id();  in fork_end()
200     if (ts->ts_tid == 0) {  in task_settid()
201         ts->ts_tid = (pid_t)syscall(SYS_gettid);  in task_settid()
220     ts->used = 1;  in init_task_state()
221     ts->sigaltstack_used = (struct target_sigaltstack) {  in init_task_state()
233         ts->start_boottime = bt.tv_sec * (uint64_t) ticks_per_sec;  in init_task_state()
234         ts->start_boottime += bt.tv_nsec * (uint64_t) ticks_per_sec /  in init_task_state()
249     new_cpu->tcg_cflags = cpu->tcg_cflags;  in cpu_copy()
252     new_env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,  in cpu_copy()
254                                     MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);  in cpu_copy()
255     memcpy(g2h_untagged(new_env->gdt.base), g2h_untagged(env->gdt.base),  in cpu_copy()
257     OBJECT(new_cpu)->free = OBJECT(cpu)->free;  in cpu_copy()
261        Note: Once we support ptrace with hw-debug register access, make sure  in cpu_copy()
263     QTAILQ_INIT(&new_cpu->breakpoints);  in cpu_copy()
264     QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {  in cpu_copy()
265         cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL);  in cpu_copy()
413         fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);  in handle_arg_reserved_va()
416     /* The representation is size - 1, with 0 remaining "default". */  in handle_arg_reserved_va()
417     reserved_va = val ? val - 1 : 0;  in handle_arg_reserved_va()
446     printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION  in handle_arg_version()
503      "model",      "select CPU (-cpu help for list)"},
521      "(use '-d help' for a list of items)"},
528     {"one-insn-per-tb",
531     {"tb-size",    "QEMU_TB_SIZE",     true,  handle_arg_tb_size,
536      "",           "Seed for pseudo-random number generator"},
546     {"xtensa-abi-call0", "QEMU_XTENSA_ABI_CALL0", false, handle_arg_abi_call0,
547      "",           "assume CALL0 Xtensa ABI"},
550      "",           "Generate a /tmp/perf-${pid}.map file for perf"},
552      "",           "Generate a jit-${pid}.dump file for perf"},
562     printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"  in usage()
563            "Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n"  in usage()
572     maxenvlen = strlen("Env-variable");  in usage()
574     for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {  in usage()
575         int arglen = strlen(arginfo->argv);  in usage()
576         if (arginfo->has_arg) {  in usage()
577             arglen += strlen(arginfo->example) + 1;  in usage()
579         if (strlen(arginfo->env) > maxenvlen) {  in usage()
580             maxenvlen = strlen(arginfo->env);  in usage()
587     printf("%-*s %-*s Description\n", maxarglen+1, "Argument",  in usage()
588             maxenvlen, "Env-variable");  in usage()
590     for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {  in usage()
591         if (arginfo->has_arg) {  in usage()
592             printf("-%s %-*s %-*s %s\n", arginfo->argv,  in usage()
593                    (int)(maxarglen - strlen(arginfo->argv) - 1),  in usage()
594                    arginfo->example, maxenvlen, arginfo->env, arginfo->help);  in usage()
596             printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv,  in usage()
597                     maxenvlen, arginfo->env,  in usage()
598                     arginfo->help);  in usage()
610            "You can use -E and -U options or the QEMU_SET_ENV and\n"  in usage()
615            "provide the -E and -U options multiple times.\n"  in usage()
617            "    -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"  in usage()
618            "    -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"  in usage()
634     for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {  in parse_args()
635         if (arginfo->env == NULL) {  in parse_args()
639         r = getenv(arginfo->env);  in parse_args()
641             arginfo->handle_opt(r);  in parse_args()
651         if (r[0] != '-') {  in parse_args()
656         if (!strcmp(r, "-")) {  in parse_args()
659         /* Treat --foo the same as -foo.  */  in parse_args()
660         if (r[0] == '-') {  in parse_args()
664         for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {  in parse_args()
665             if (!strcmp(r, arginfo->argv)) {  in parse_args()
666                 if (arginfo->has_arg) {  in parse_args()
672                     arginfo->handle_opt(argv[optind]);  in parse_args()
675                     arginfo->handle_opt(NULL);  in parse_args()
682         if (arginfo->handle_opt == NULL) {  in parse_args()
689         (void) fprintf(stderr, "qemu: no user program specified\n");  in parse_args()
733         wrk--;  in main()
780      * Manage binfmt-misc open-binary flag  in main()
803      * Manage binfmt-misc preserve-arg[0] flag  in main()
822         object_property_set_bool(OBJECT(accel), "one-insn-per-tb",  in main()
824         object_property_set_int(OBJECT(accel), "tb-size",  in main()
826         ac->init_machine(accel, NULL);  in main()
846      * by the command-line option, but not by default. Unless we're running a  in main()
879 #pragma GCC diagnostic ignored "-Wtype-limits"  in main()
880 #pragma GCC diagnostic ignored "-Wtautological-compare"  in main()
895         /* 32-bit host: pick something medium size. */  in main()
911         /* 32-bit host: pick something medium size. */  in main()
966     target_argc = argc - optind;  in main()
970      * If argv0 is specified (using '-0' switch) we replace  in main()
985     ts->info = info;  in main()
986     ts->bprm = &bprm;  in main()
987     cpu->opaque = ts;  in main()
995         printf("Error while loading %s: %s\n", exec_path, strerror(-ret));  in main()
1013                     info->end_code);  in main()
1015                     info->start_code);  in main()
1017                     info->start_data);  in main()
1019                     info->end_data);  in main()
1021                     info->start_stack);  in main()
1023                     info->brk);  in main()
1025                     info->entry);  in main()
1027                     info->argv);  in main()
1029                     info->envp);  in main()
1031                     info->saved_auxv);  in main()
1036     target_set_brk(info->brk);  in main()