184778508Sblueswir1 /*
24c0a4fe6SWarner Losh * qemu bsd user main
384778508Sblueswir1 *
484778508Sblueswir1 * Copyright (c) 2003-2008 Fabrice Bellard
54c0a4fe6SWarner Losh * Copyright (c) 2013-14 Stacey Son
684778508Sblueswir1 *
784778508Sblueswir1 * This program is free software; you can redistribute it and/or modify
884778508Sblueswir1 * it under the terms of the GNU General Public License as published by
984778508Sblueswir1 * the Free Software Foundation; either version 2 of the License, or
1084778508Sblueswir1 * (at your option) any later version.
1184778508Sblueswir1 *
1284778508Sblueswir1 * This program is distributed in the hope that it will be useful,
1384778508Sblueswir1 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1484778508Sblueswir1 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1584778508Sblueswir1 * GNU General Public License for more details.
1684778508Sblueswir1 *
1784778508Sblueswir1 * You should have received a copy of the GNU General Public License
188167ee88SBlue Swirl * along with this program; if not, see <http://www.gnu.org/licenses/>.
1984778508Sblueswir1 */
2014a48c1dSMarkus Armbruster
2148e438a3SMarkus Armbruster #include "qemu/osdep.h"
22312a0b1cSWarner Losh #include <sys/resource.h>
23312a0b1cSWarner Losh #include <sys/sysctl.h>
24312a0b1cSWarner Losh
2549f95221SMarc-André Lureau #include "qemu/help-texts.h"
2666d26ddbSPhilippe Mathieu-Daudé #include "qemu/units.h"
27940e43aaSClaudio Fontana #include "qemu/accel.h"
288c1c230aSEd Maste #include "qemu-version.h"
2984778508Sblueswir1 #include <machine/trap.h>
3084778508Sblueswir1
31daa76aa4SMarkus Armbruster #include "qapi/error.h"
3284778508Sblueswir1 #include "qemu.h"
336913e79cSLluís Vilanova #include "qemu/config-file.h"
34f5852efaSChristophe Fergeau #include "qemu/error-report.h"
35f348b6d1SVeronia Bahaa #include "qemu/path.h"
36f348b6d1SVeronia Bahaa #include "qemu/help_option.h"
370b8fa32fSMarkus Armbruster #include "qemu/module.h"
3863c91552SPaolo Bonzini #include "exec/exec-all.h"
39d7ec12f8SRichard Henderson #include "tcg/startup.h"
401de7afc9SPaolo Bonzini #include "qemu/timer.h"
411de7afc9SPaolo Bonzini #include "qemu/envlist.h"
4229aabb4fSWarner Losh #include "qemu/cutils.h"
43508127e2SPaolo Bonzini #include "exec/log.h"
446913e79cSLluís Vilanova #include "trace/control.h"
4503ecf078SWarner Losh #include "crypto/init.h"
4603ecf078SWarner Losh #include "qemu/guest-random.h"
47d96bf49bSAlex Bennée #include "gdbstub/user.h"
48fc0d96b4SBlue Swirl
49d1dc9ab3SWarner Losh #include "host-os.h"
50031fe7afSWarner Losh #include "target_arch_cpu.h"
51d1dc9ab3SWarner Losh
523cfb0456SPeter Maydell static bool opt_one_insn_per_tb;
535ca870b9SRichard Henderson uintptr_t guest_base;
54e307c192SRichard Henderson bool have_guest_base;
55be04f210SWarner Losh /*
56be04f210SWarner Losh * When running 32-on-64 we should make sure we can fit all of the possible
57be04f210SWarner Losh * guest address space into a contiguous chunk of virtual host memory.
58be04f210SWarner Losh *
59be04f210SWarner Losh * This way we will never overlap with our own libraries or binaries or stack
60be04f210SWarner Losh * or anything else that QEMU maps.
61be04f210SWarner Losh *
62be04f210SWarner Losh * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
63be04f210SWarner Losh * of the address for the kernel. Some cpus rely on this and user space
64be04f210SWarner Losh * uses the high bit(s) for pointer tagging and the like. For them, we
65be04f210SWarner Losh * must preserve the expected address space.
66be04f210SWarner Losh */
67be04f210SWarner Losh #ifndef MAX_RESERVED_VA
68be04f210SWarner Losh # if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
69be04f210SWarner Losh # if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
70be04f210SWarner Losh (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
7195059f9cSRichard Henderson # define MAX_RESERVED_VA 0xfffffffful
72be04f210SWarner Losh # else
7395059f9cSRichard Henderson # define MAX_RESERVED_VA ((1ul << TARGET_VIRT_ADDR_SPACE_BITS) - 1)
74be04f210SWarner Losh # endif
75be04f210SWarner Losh # else
76be04f210SWarner Losh # define MAX_RESERVED_VA 0
77be04f210SWarner Losh # endif
78be04f210SWarner Losh #endif
79be04f210SWarner Losh
80be04f210SWarner Losh /*
81be04f210SWarner Losh * That said, reserving *too* much vm space via mmap can run into problems
82be04f210SWarner Losh * with rlimits, oom due to page table creation, etc. We will still try it,
83be04f210SWarner Losh * if directed by the command-line option, but not by default.
84be04f210SWarner Losh */
85be04f210SWarner Losh #if HOST_LONG_BITS == 64 && TARGET_VIRT_ADDR_SPACE_BITS <= 32
86be04f210SWarner Losh unsigned long reserved_va = MAX_RESERVED_VA;
87be04f210SWarner Losh #else
88d6ef40bfSPeter Maydell unsigned long reserved_va;
89be04f210SWarner Losh #endif
901b530a6dSaurel32
9186327290SStacey Son const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
92fccae322SPeter Maydell const char *qemu_uname_release;
9301a298a5SWarner Losh char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */
9484778508Sblueswir1
95312a0b1cSWarner Losh unsigned long target_maxtsiz = TARGET_MAXTSIZ; /* max text size */
96312a0b1cSWarner Losh unsigned long target_dfldsiz = TARGET_DFLDSIZ; /* initial data size limit */
97312a0b1cSWarner Losh unsigned long target_maxdsiz = TARGET_MAXDSIZ; /* max data size */
98312a0b1cSWarner Losh unsigned long target_dflssiz = TARGET_DFLSSIZ; /* initial data size limit */
99312a0b1cSWarner Losh unsigned long target_maxssiz = TARGET_MAXSSIZ; /* max stack size */
100312a0b1cSWarner Losh unsigned long target_sgrowsiz = TARGET_SGROWSIZ; /* amount to grow stack */
10184778508Sblueswir1
10263cca106SWarner Losh /* Helper routines for implementing atomic operations. */
1039399f095Sblueswir1
fork_start(void)1049399f095Sblueswir1 void fork_start(void)
1059399f095Sblueswir1 {
10663cca106SWarner Losh start_exclusive();
10763cca106SWarner Losh cpu_list_lock();
10863cca106SWarner Losh mmap_fork_start();
1099399f095Sblueswir1 }
1109399f095Sblueswir1
fork_end(int child)1119399f095Sblueswir1 void fork_end(int child)
1129399f095Sblueswir1 {
1139399f095Sblueswir1 if (child) {
11463cca106SWarner Losh CPUState *cpu, *next_cpu;
11563cca106SWarner Losh /*
11663cca106SWarner Losh * Child processes created by fork() only have a single thread. Discard
11763cca106SWarner Losh * information about the parent threads.
11863cca106SWarner Losh */
11963cca106SWarner Losh CPU_FOREACH_SAFE(cpu, next_cpu) {
12063cca106SWarner Losh if (cpu != thread_cpu) {
121*3c55dd58SPhilippe Mathieu-Daudé QTAILQ_REMOVE_RCU(&cpus_queue, cpu, node);
12263cca106SWarner Losh }
12363cca106SWarner Losh }
12463cca106SWarner Losh mmap_fork_end(child);
12563cca106SWarner Losh /*
12663cca106SWarner Losh * qemu_init_cpu_list() takes care of reinitializing the exclusive
12763cca106SWarner Losh * state, so we don't need to end_exclusive() here.
12863cca106SWarner Losh */
12963cca106SWarner Losh qemu_init_cpu_list();
130f7ec7f7bSPeter Crosthwaite gdbserver_fork(thread_cpu);
13163cca106SWarner Losh } else {
13263cca106SWarner Losh mmap_fork_end(child);
13363cca106SWarner Losh cpu_list_unlock();
13463cca106SWarner Losh end_exclusive();
1359399f095Sblueswir1 }
1369399f095Sblueswir1 }
1379399f095Sblueswir1
cpu_loop(CPUArchState * env)138031fe7afSWarner Losh void cpu_loop(CPUArchState *env)
13931fc12dfSblueswir1 {
140031fe7afSWarner Losh target_cpu_loop(env);
14131fc12dfSblueswir1 }
14231fc12dfSblueswir1
usage(void)14384778508Sblueswir1 static void usage(void)
14484778508Sblueswir1 {
1457e563bfbSThomas Huth printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION
1460781dd6eSThomas Huth "\n" QEMU_COPYRIGHT "\n"
1472e59915dSPaolo Bonzini "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
14884778508Sblueswir1 "BSD CPU emulator (compiled for %s emulation)\n"
14984778508Sblueswir1 "\n"
15084778508Sblueswir1 "Standard options:\n"
15184778508Sblueswir1 "-h print this help\n"
15284778508Sblueswir1 "-g port wait gdb connection to port\n"
15384778508Sblueswir1 "-L path set the elf interpreter prefix (default=%s)\n"
15484778508Sblueswir1 "-s size set the stack size in bytes (default=%ld)\n"
155c8057f95SPeter Maydell "-cpu model select CPU (-cpu help for list)\n"
15684778508Sblueswir1 "-drop-ld-preload drop LD_PRELOAD for target process\n"
157fc0d96b4SBlue Swirl "-E var=value sets/modifies targets environment variable(s)\n"
158fc0d96b4SBlue Swirl "-U var unsets targets environment variable(s)\n"
1592fa5d9baSBlue Swirl "-B address set guest_base address to address\n"
16084778508Sblueswir1 "\n"
16184778508Sblueswir1 "Debug options:\n"
162989b697dSPeter Maydell "-d item1[,...] enable logging of specified items\n"
163989b697dSPeter Maydell " (use '-d help' for a list of log items)\n"
164989b697dSPeter Maydell "-D logfile write logs to 'logfile' (default stderr)\n"
165060e0cd7SPeter Maydell "-one-insn-per-tb run with one guest instruction per emulated TB\n"
166060e0cd7SPeter Maydell "-singlestep deprecated synonym for -one-insn-per-tb\n"
16784778508Sblueswir1 "-strace log system calls\n"
1686913e79cSLluís Vilanova "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
1696913e79cSLluís Vilanova " specify tracing options\n"
17084778508Sblueswir1 "\n"
17184778508Sblueswir1 "Environment variables:\n"
17284778508Sblueswir1 "QEMU_STRACE Print system calls and arguments similar to the\n"
17384778508Sblueswir1 " 'strace' program. Enable by setting to any value.\n"
174fc0d96b4SBlue Swirl "You can use -E and -U options to set/unset environment variables\n"
175fc0d96b4SBlue Swirl "for target process. It is possible to provide several variables\n"
176fc0d96b4SBlue Swirl "by repeating the option. For example:\n"
177fc0d96b4SBlue Swirl " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
178fc0d96b4SBlue Swirl "Note that if you provide several changes to single variable\n"
179fc0d96b4SBlue Swirl "last change will stay in effect.\n"
180f5048cb7SEric Blake "\n"
181f5048cb7SEric Blake QEMU_HELP_BOTTOM "\n"
18284778508Sblueswir1 ,
1832e59915dSPaolo Bonzini TARGET_NAME,
18484778508Sblueswir1 interp_prefix,
185312a0b1cSWarner Losh target_dflssiz);
1862d18e637Sblueswir1 exit(1);
18784778508Sblueswir1 }
18884778508Sblueswir1
189d42df502SWarner Losh __thread CPUState *thread_cpu;
19084778508Sblueswir1
stop_all_tasks(void)191653ccec2SWarner Losh void stop_all_tasks(void)
192653ccec2SWarner Losh {
193653ccec2SWarner Losh /*
194653ccec2SWarner Losh * We trust when using NPTL (pthreads) start_exclusive() handles thread
195653ccec2SWarner Losh * stopping correctly.
196653ccec2SWarner Losh */
197653ccec2SWarner Losh start_exclusive();
198653ccec2SWarner Losh }
199653ccec2SWarner Losh
qemu_cpu_is_self(CPUState * cpu)20048f59211SEd Maste bool qemu_cpu_is_self(CPUState *cpu)
20148f59211SEd Maste {
20248f59211SEd Maste return thread_cpu == cpu;
20348f59211SEd Maste }
20448f59211SEd Maste
qemu_cpu_kick(CPUState * cpu)20548f59211SEd Maste void qemu_cpu_kick(CPUState *cpu)
20648f59211SEd Maste {
20748f59211SEd Maste cpu_exit(cpu);
20848f59211SEd Maste }
20948f59211SEd Maste
21084778508Sblueswir1 /* Assumes contents are already zeroed. */
init_task_state(TaskState * ts)211b46d4ad7SWarner Losh static void init_task_state(TaskState *ts)
21284778508Sblueswir1 {
21346f4f76dSWarner Losh ts->sigaltstack_used = (struct target_sigaltstack) {
21446f4f76dSWarner Losh .ss_sp = 0,
21546f4f76dSWarner Losh .ss_size = 0,
21646f4f76dSWarner Losh .ss_flags = TARGET_SS_DISABLE,
21746f4f76dSWarner Losh };
21884778508Sblueswir1 }
21984778508Sblueswir1
gemu_log(const char * fmt,...)220f0f7f9dcSWarner Losh void gemu_log(const char *fmt, ...)
221f0f7f9dcSWarner Losh {
222f0f7f9dcSWarner Losh va_list ap;
223f0f7f9dcSWarner Losh
224f0f7f9dcSWarner Losh va_start(ap, fmt);
225f0f7f9dcSWarner Losh vfprintf(stderr, fmt, ap);
226f0f7f9dcSWarner Losh va_end(ap);
227f0f7f9dcSWarner Losh }
228f0f7f9dcSWarner Losh
229312a0b1cSWarner Losh static void
adjust_ssize(void)230312a0b1cSWarner Losh adjust_ssize(void)
231312a0b1cSWarner Losh {
232312a0b1cSWarner Losh struct rlimit rl;
233312a0b1cSWarner Losh
234312a0b1cSWarner Losh if (getrlimit(RLIMIT_STACK, &rl) != 0) {
235312a0b1cSWarner Losh return;
236312a0b1cSWarner Losh }
237312a0b1cSWarner Losh
238312a0b1cSWarner Losh target_maxssiz = MIN(target_maxssiz, rl.rlim_max);
239312a0b1cSWarner Losh target_dflssiz = MIN(MAX(target_dflssiz, rl.rlim_cur), target_maxssiz);
240312a0b1cSWarner Losh
241312a0b1cSWarner Losh rl.rlim_max = target_maxssiz;
242312a0b1cSWarner Losh rl.rlim_cur = target_dflssiz;
243312a0b1cSWarner Losh setrlimit(RLIMIT_STACK, &rl);
244312a0b1cSWarner Losh }
245312a0b1cSWarner Losh
save_proc_pathname(char * argv0)24601a298a5SWarner Losh static void save_proc_pathname(char *argv0)
24701a298a5SWarner Losh {
24801a298a5SWarner Losh int mib[4];
24901a298a5SWarner Losh size_t len;
25001a298a5SWarner Losh
25101a298a5SWarner Losh mib[0] = CTL_KERN;
25201a298a5SWarner Losh mib[1] = KERN_PROC;
25301a298a5SWarner Losh mib[2] = KERN_PROC_PATHNAME;
25401a298a5SWarner Losh mib[3] = -1;
25501a298a5SWarner Losh
25601a298a5SWarner Losh len = sizeof(qemu_proc_pathname);
25701a298a5SWarner Losh if (sysctl(mib, 4, qemu_proc_pathname, &len, NULL, 0)) {
25801a298a5SWarner Losh perror("sysctl");
25901a298a5SWarner Losh }
26001a298a5SWarner Losh }
26101a298a5SWarner Losh
main(int argc,char ** argv)26284778508Sblueswir1 int main(int argc, char **argv)
26384778508Sblueswir1 {
26484778508Sblueswir1 const char *filename;
26584778508Sblueswir1 const char *cpu_model;
2662278b939SIgor Mammedov const char *cpu_type;
267989b697dSPeter Maydell const char *log_file = NULL;
268c235d738SMatthew Fernandez const char *log_mask = NULL;
26903ecf078SWarner Losh const char *seed_optarg = NULL;
27084778508Sblueswir1 struct target_pt_regs regs1, *regs = ®s1;
27184778508Sblueswir1 struct image_info info1, *info = &info1;
272d37853f9SWarner Losh struct bsd_binprm bprm;
273031fe7afSWarner Losh TaskState *ts;
2749349b4f9SAndreas Färber CPUArchState *env;
275db6b81d4SAndreas Färber CPUState *cpu;
27629aabb4fSWarner Losh int optind, rv;
27784778508Sblueswir1 const char *r;
278fcedd920SAlex Bennée const char *gdbstub = NULL;
279fc0d96b4SBlue Swirl char **target_environ, **wrk;
280fc0d96b4SBlue Swirl envlist_t *envlist = NULL;
281b8012648SColin Percival char *argv0 = NULL;
28284778508Sblueswir1
283312a0b1cSWarner Losh adjust_ssize();
284312a0b1cSWarner Losh
285b23a51dcSWarner Losh if (argc <= 1) {
28684778508Sblueswir1 usage();
287b23a51dcSWarner Losh }
28884778508Sblueswir1
28901a298a5SWarner Losh save_proc_pathname(argv[0]);
29001a298a5SWarner Losh
291f5852efaSChristophe Fergeau error_init(argv[0]);
292fe4db84dSDaniel P. Berrange module_call_init(MODULE_INIT_TRACE);
293267f685bSPaolo Bonzini qemu_init_cpu_list();
294ce008c1fSAndreas Färber module_call_init(MODULE_INIT_QOM);
295ce008c1fSAndreas Färber
296ec45bbe5SSaurav Sachidanand envlist = envlist_create();
297fc0d96b4SBlue Swirl
2987f750efcSAndreas Schwab /*
2997f750efcSAndreas Schwab * add current environment into the list
3007f750efcSAndreas Schwab * envlist_setenv adds to the front of the list; to preserve environ
3017f750efcSAndreas Schwab * order add from back to front
3027f750efcSAndreas Schwab */
303fc0d96b4SBlue Swirl for (wrk = environ; *wrk != NULL; wrk++) {
3047f750efcSAndreas Schwab continue;
3057f750efcSAndreas Schwab }
3067f750efcSAndreas Schwab while (wrk != environ) {
3077f750efcSAndreas Schwab wrk--;
308fc0d96b4SBlue Swirl (void) envlist_setenv(envlist, *wrk);
309fc0d96b4SBlue Swirl }
310fc0d96b4SBlue Swirl
31184778508Sblueswir1 cpu_model = NULL;
3120c62de2fSJuergen Lock
3136913e79cSLluís Vilanova qemu_add_opts(&qemu_trace_opts);
3146913e79cSLluís Vilanova
31584778508Sblueswir1 optind = 1;
31684778508Sblueswir1 for (;;) {
317b23a51dcSWarner Losh if (optind >= argc) {
31884778508Sblueswir1 break;
319b23a51dcSWarner Losh }
32084778508Sblueswir1 r = argv[optind];
321b23a51dcSWarner Losh if (r[0] != '-') {
32284778508Sblueswir1 break;
323b23a51dcSWarner Losh }
32484778508Sblueswir1 optind++;
32584778508Sblueswir1 r++;
32684778508Sblueswir1 if (!strcmp(r, "-")) {
32784778508Sblueswir1 break;
32884778508Sblueswir1 } else if (!strcmp(r, "d")) {
329c235d738SMatthew Fernandez if (optind >= argc) {
33084778508Sblueswir1 break;
33184778508Sblueswir1 }
332c235d738SMatthew Fernandez log_mask = argv[optind++];
333c235d738SMatthew Fernandez } else if (!strcmp(r, "D")) {
334c235d738SMatthew Fernandez if (optind >= argc) {
335c235d738SMatthew Fernandez break;
33684778508Sblueswir1 }
337c235d738SMatthew Fernandez log_file = argv[optind++];
338fc0d96b4SBlue Swirl } else if (!strcmp(r, "E")) {
339fc0d96b4SBlue Swirl r = argv[optind++];
340b23a51dcSWarner Losh if (envlist_setenv(envlist, r) != 0) {
341fc0d96b4SBlue Swirl usage();
342b23a51dcSWarner Losh }
343f66724c9SStefan Weil } else if (!strcmp(r, "ignore-environment")) {
344f66724c9SStefan Weil envlist_free(envlist);
345ec45bbe5SSaurav Sachidanand envlist = envlist_create();
346fc0d96b4SBlue Swirl } else if (!strcmp(r, "U")) {
347fc0d96b4SBlue Swirl r = argv[optind++];
348b23a51dcSWarner Losh if (envlist_unsetenv(envlist, r) != 0) {
349fc0d96b4SBlue Swirl usage();
350b23a51dcSWarner Losh }
35184778508Sblueswir1 } else if (!strcmp(r, "s")) {
35284778508Sblueswir1 r = argv[optind++];
353312a0b1cSWarner Losh rv = qemu_strtoul(r, &r, 0, &target_dflssiz);
354312a0b1cSWarner Losh if (rv < 0 || target_dflssiz <= 0) {
35584778508Sblueswir1 usage();
356b23a51dcSWarner Losh }
357b23a51dcSWarner Losh if (*r == 'M') {
358312a0b1cSWarner Losh target_dflssiz *= 1024 * 1024;
359b23a51dcSWarner Losh } else if (*r == 'k' || *r == 'K') {
360312a0b1cSWarner Losh target_dflssiz *= 1024;
361312a0b1cSWarner Losh }
362312a0b1cSWarner Losh if (target_dflssiz > target_maxssiz) {
363312a0b1cSWarner Losh usage();
364b23a51dcSWarner Losh }
36584778508Sblueswir1 } else if (!strcmp(r, "L")) {
36684778508Sblueswir1 interp_prefix = argv[optind++];
36784778508Sblueswir1 } else if (!strcmp(r, "p")) {
36884778508Sblueswir1 qemu_host_page_size = atoi(argv[optind++]);
36984778508Sblueswir1 if (qemu_host_page_size == 0 ||
37084778508Sblueswir1 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
37184778508Sblueswir1 fprintf(stderr, "page size must be a power of two\n");
37284778508Sblueswir1 exit(1);
37384778508Sblueswir1 }
37484778508Sblueswir1 } else if (!strcmp(r, "g")) {
375fcedd920SAlex Bennée gdbstub = g_strdup(argv[optind++]);
37684778508Sblueswir1 } else if (!strcmp(r, "r")) {
37784778508Sblueswir1 qemu_uname_release = argv[optind++];
37884778508Sblueswir1 } else if (!strcmp(r, "cpu")) {
37984778508Sblueswir1 cpu_model = argv[optind++];
380c8057f95SPeter Maydell if (is_help_option(cpu_model)) {
38184778508Sblueswir1 /* XXX: implement xxx_cpu_list for targets that still miss it */
38284778508Sblueswir1 #if defined(cpu_list)
3830442428aSMarkus Armbruster cpu_list();
38484778508Sblueswir1 #endif
3852d18e637Sblueswir1 exit(1);
38684778508Sblueswir1 }
3872fa5d9baSBlue Swirl } else if (!strcmp(r, "B")) {
38829aabb4fSWarner Losh rv = qemu_strtoul(argv[optind++], NULL, 0, &guest_base);
38929aabb4fSWarner Losh if (rv < 0) {
39029aabb4fSWarner Losh usage();
39129aabb4fSWarner Losh }
392e307c192SRichard Henderson have_guest_base = true;
39384778508Sblueswir1 } else if (!strcmp(r, "drop-ld-preload")) {
394fc0d96b4SBlue Swirl (void) envlist_unsetenv(envlist, "LD_PRELOAD");
39503ecf078SWarner Losh } else if (!strcmp(r, "seed")) {
39603ecf078SWarner Losh seed_optarg = optarg;
397060e0cd7SPeter Maydell } else if (!strcmp(r, "singlestep") || !strcmp(r, "one-insn-per-tb")) {
3983cfb0456SPeter Maydell opt_one_insn_per_tb = true;
39984778508Sblueswir1 } else if (!strcmp(r, "strace")) {
40084778508Sblueswir1 do_strace = 1;
4016913e79cSLluís Vilanova } else if (!strcmp(r, "trace")) {
40292eecfffSPaolo Bonzini trace_opt_parse(optarg);
403b8012648SColin Percival } else if (!strcmp(r, "0")) {
404b8012648SColin Percival argv0 = argv[optind++];
4056913e79cSLluís Vilanova } else {
40684778508Sblueswir1 usage();
40784778508Sblueswir1 }
40884778508Sblueswir1 }
40984778508Sblueswir1
410c235d738SMatthew Fernandez /* init debug */
411905c78feSRichard Henderson {
412905c78feSRichard Henderson int mask = 0;
413c235d738SMatthew Fernandez if (log_mask) {
4144fde1ebaSPeter Maydell mask = qemu_str_to_log_mask(log_mask);
415c235d738SMatthew Fernandez if (!mask) {
41659a6fa6eSPeter Maydell qemu_print_log_usage(stdout);
417c235d738SMatthew Fernandez exit(1);
418c235d738SMatthew Fernandez }
419905c78feSRichard Henderson }
420905c78feSRichard Henderson qemu_set_log_filename_flags(log_file, mask, &error_fatal);
421c235d738SMatthew Fernandez }
422c235d738SMatthew Fernandez
4234b5dfd82SPeter Maydell if (optind >= argc) {
4244b5dfd82SPeter Maydell usage();
4254b5dfd82SPeter Maydell }
4264b5dfd82SPeter Maydell filename = argv[optind];
427b8012648SColin Percival if (argv0) {
428b8012648SColin Percival argv[optind] = argv0;
429b8012648SColin Percival }
4304b5dfd82SPeter Maydell
4316913e79cSLluís Vilanova if (!trace_init_backends()) {
4326913e79cSLluís Vilanova exit(1);
4336913e79cSLluís Vilanova }
43492eecfffSPaolo Bonzini trace_init_file();
4356913e79cSLluís Vilanova
43684778508Sblueswir1 /* Zero out regs */
43784778508Sblueswir1 memset(regs, 0, sizeof(struct target_pt_regs));
43884778508Sblueswir1
439d37853f9SWarner Losh /* Zero bsd params */
440d37853f9SWarner Losh memset(&bprm, 0, sizeof(bprm));
441d37853f9SWarner Losh
44284778508Sblueswir1 /* Zero out image_info */
44384778508Sblueswir1 memset(info, 0, sizeof(struct image_info));
44484778508Sblueswir1
44584778508Sblueswir1 /* Scan interp_prefix dir for replacement files. */
44684778508Sblueswir1 init_paths(interp_prefix);
44784778508Sblueswir1
44884778508Sblueswir1 if (cpu_model == NULL) {
449031fe7afSWarner Losh cpu_model = TARGET_DEFAULT_CPU_MODEL;
45084778508Sblueswir1 }
4512b5249b8SIgor Mammedov
452b86f59c7SClaudio Fontana cpu_type = parse_cpu_option(cpu_model);
453031fe7afSWarner Losh
4542b5249b8SIgor Mammedov /* init tcg before creating CPUs and to get qemu_host_page_size */
455940e43aaSClaudio Fontana {
4563cfb0456SPeter Maydell AccelState *accel = current_accel();
4573cfb0456SPeter Maydell AccelClass *ac = ACCEL_GET_CLASS(accel);
4582b5249b8SIgor Mammedov
459b86f59c7SClaudio Fontana accel_init_interfaces(ac);
4603cfb0456SPeter Maydell object_property_set_bool(OBJECT(accel), "one-insn-per-tb",
4613cfb0456SPeter Maydell opt_one_insn_per_tb, &error_abort);
46292242f34SClaudio Fontana ac->init_machine(NULL);
463940e43aaSClaudio Fontana }
4642278b939SIgor Mammedov cpu = cpu_create(cpu_type);
465b77af26eSRichard Henderson env = cpu_env(cpu);
466db6b81d4SAndreas Färber cpu_reset(cpu);
467db6b81d4SAndreas Färber thread_cpu = cpu;
46884778508Sblueswir1
46984778508Sblueswir1 if (getenv("QEMU_STRACE")) {
47084778508Sblueswir1 do_strace = 1;
47184778508Sblueswir1 }
47284778508Sblueswir1
473fc0d96b4SBlue Swirl target_environ = envlist_to_environ(envlist, NULL);
474fc0d96b4SBlue Swirl envlist_free(envlist);
47584778508Sblueswir1
47603ecf078SWarner Losh {
47703ecf078SWarner Losh Error *err = NULL;
47803ecf078SWarner Losh if (seed_optarg != NULL) {
47903ecf078SWarner Losh qemu_guest_random_seed_main(seed_optarg, &err);
48003ecf078SWarner Losh } else {
48103ecf078SWarner Losh qcrypto_init(&err);
48203ecf078SWarner Losh }
48303ecf078SWarner Losh if (err) {
48403ecf078SWarner Losh error_reportf_err(err, "cannot initialize crypto: ");
48503ecf078SWarner Losh exit(1);
48603ecf078SWarner Losh }
48703ecf078SWarner Losh }
48803ecf078SWarner Losh
4892fa5d9baSBlue Swirl /*
490fa79cde6SRichard Henderson * Now that page sizes are configured we can do
4912fa5d9baSBlue Swirl * proper page alignment for guest_base.
4922fa5d9baSBlue Swirl */
49328b61d49SRichard Henderson if (have_guest_base) {
49428b61d49SRichard Henderson if (guest_base & ~qemu_host_page_mask) {
49528b61d49SRichard Henderson error_report("Selected guest base not host page aligned");
49628b61d49SRichard Henderson exit(1);
49728b61d49SRichard Henderson }
49828b61d49SRichard Henderson }
49928b61d49SRichard Henderson
50028b61d49SRichard Henderson /*
50128b61d49SRichard Henderson * If reserving host virtual address space, do so now.
50228b61d49SRichard Henderson * Combined with '-B', ensure that the chosen range is free.
50328b61d49SRichard Henderson */
50428b61d49SRichard Henderson if (reserved_va) {
50528b61d49SRichard Henderson void *p;
50628b61d49SRichard Henderson
50728b61d49SRichard Henderson if (have_guest_base) {
50828b61d49SRichard Henderson p = mmap((void *)guest_base, reserved_va + 1, PROT_NONE,
50928b61d49SRichard Henderson MAP_ANON | MAP_PRIVATE | MAP_FIXED | MAP_EXCL, -1, 0);
51028b61d49SRichard Henderson } else {
51128b61d49SRichard Henderson p = mmap(NULL, reserved_va + 1, PROT_NONE,
51228b61d49SRichard Henderson MAP_ANON | MAP_PRIVATE, -1, 0);
51328b61d49SRichard Henderson }
51428b61d49SRichard Henderson if (p == MAP_FAILED) {
51528b61d49SRichard Henderson const char *err = strerror(errno);
51628b61d49SRichard Henderson char *sz = size_to_str(reserved_va + 1);
51728b61d49SRichard Henderson
51828b61d49SRichard Henderson if (have_guest_base) {
51928b61d49SRichard Henderson error_report("Cannot allocate %s bytes at -B %p for guest "
52028b61d49SRichard Henderson "address space: %s", sz, (void *)guest_base, err);
52128b61d49SRichard Henderson } else {
52228b61d49SRichard Henderson error_report("Cannot allocate %s bytes for guest "
52328b61d49SRichard Henderson "address space: %s", sz, err);
52428b61d49SRichard Henderson }
52528b61d49SRichard Henderson exit(1);
52628b61d49SRichard Henderson }
52728b61d49SRichard Henderson guest_base = (uintptr_t)p;
52828b61d49SRichard Henderson have_guest_base = true;
52928b61d49SRichard Henderson
53028b61d49SRichard Henderson /* Ensure that mmap_next_start is within range. */
53128b61d49SRichard Henderson if (reserved_va <= mmap_next_start) {
53228b61d49SRichard Henderson mmap_next_start = (reserved_va / 4 * 3)
53328b61d49SRichard Henderson & TARGET_PAGE_MASK & qemu_host_page_mask;
53428b61d49SRichard Henderson }
53528b61d49SRichard Henderson }
5362fa5d9baSBlue Swirl
537d37853f9SWarner Losh if (loader_exec(filename, argv + optind, target_environ, regs, info,
538d37853f9SWarner Losh &bprm) != 0) {
53984778508Sblueswir1 printf("Error loading %s\n", filename);
54084778508Sblueswir1 _exit(1);
54184778508Sblueswir1 }
54284778508Sblueswir1
54384778508Sblueswir1 for (wrk = target_environ; *wrk; wrk++) {
544ec45bbe5SSaurav Sachidanand g_free(*wrk);
54584778508Sblueswir1 }
54684778508Sblueswir1
547ec45bbe5SSaurav Sachidanand g_free(target_environ);
54884778508Sblueswir1
54913829020SPaolo Bonzini if (qemu_loglevel_mask(CPU_LOG_PAGE)) {
55043b76161SRichard Henderson FILE *f = qemu_log_trylock();
55143b76161SRichard Henderson if (f) {
55243b76161SRichard Henderson fprintf(f, "guest_base %p\n", (void *)guest_base);
55343b76161SRichard Henderson fprintf(f, "page layout changed following binary load\n");
55443b76161SRichard Henderson page_dump(f);
55584778508Sblueswir1
55643b76161SRichard Henderson fprintf(f, "end_code 0x" TARGET_ABI_FMT_lx "\n",
55743b76161SRichard Henderson info->end_code);
55843b76161SRichard Henderson fprintf(f, "start_code 0x" TARGET_ABI_FMT_lx "\n",
55984778508Sblueswir1 info->start_code);
56043b76161SRichard Henderson fprintf(f, "start_data 0x" TARGET_ABI_FMT_lx "\n",
56184778508Sblueswir1 info->start_data);
56243b76161SRichard Henderson fprintf(f, "end_data 0x" TARGET_ABI_FMT_lx "\n",
56343b76161SRichard Henderson info->end_data);
56443b76161SRichard Henderson fprintf(f, "start_stack 0x" TARGET_ABI_FMT_lx "\n",
56584778508Sblueswir1 info->start_stack);
56643b76161SRichard Henderson fprintf(f, "brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
56743b76161SRichard Henderson fprintf(f, "entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
56843b76161SRichard Henderson
56943b76161SRichard Henderson qemu_log_unlock(f);
57043b76161SRichard Henderson }
5712e77eac6Sblueswir1 }
57284778508Sblueswir1
573031fe7afSWarner Losh /* build Task State */
574031fe7afSWarner Losh ts = g_new0(TaskState, 1);
575031fe7afSWarner Losh init_task_state(ts);
576031fe7afSWarner Losh ts->info = info;
577031fe7afSWarner Losh ts->bprm = &bprm;
578031fe7afSWarner Losh cpu->opaque = ts;
579031fe7afSWarner Losh
58084778508Sblueswir1 target_set_brk(info->brk);
58184778508Sblueswir1 syscall_init();
58284778508Sblueswir1 signal_init();
58384778508Sblueswir1
58434bc8475SWarner Losh /*
58534bc8475SWarner Losh * Now that we've loaded the binary, GUEST_BASE is fixed. Delay
58634bc8475SWarner Losh * generating the prologue until now so that the prologue can take
58734bc8475SWarner Losh * the real value of GUEST_BASE into account.
58834bc8475SWarner Losh */
589935f75aeSRichard Henderson tcg_prologue_init();
5909002ec79SRichard Henderson
591031fe7afSWarner Losh target_cpu_init(env, regs);
59284778508Sblueswir1
593fcedd920SAlex Bennée if (gdbstub) {
594fcedd920SAlex Bennée gdbserver_start(gdbstub);
595db6b81d4SAndreas Färber gdb_handlesig(cpu, 0);
59684778508Sblueswir1 }
59778cfb07fSJuergen Lock cpu_loop(env);
59884778508Sblueswir1 /* never exits */
59984778508Sblueswir1 return 0;
60084778508Sblueswir1 }
601