*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ * MA 02110-1301, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
+#include <sys/mman.h>
#include "qemu.h"
#include "qemu-common.h"
+#include "cache-utils.h"
/* For tb_lock */
#include "exec-all.h"
+
+#include "envlist.h"
+
#define DEBUG_LOGFILE "/tmp/qemu.log"
+char *exec_path;
+
+int singlestep;
+
static const char *interp_prefix = CONFIG_QEMU_PREFIX;
const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
We don't require a full sync, only that no cpus are executing guest code.
The alternative is to map target atomic ops onto host equivalents,
which requires quite a lot of per host/target work. */
+static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
thread_env->next_cpu = NULL;
pending_cpus = 0;
pthread_mutex_init(&exclusive_lock, NULL);
+ pthread_mutex_init(&cpu_list_mutex, NULL);
pthread_cond_init(&exclusive_cond, NULL);
pthread_cond_init(&exclusive_resume, NULL);
pthread_mutex_init(&tb_lock, NULL);
+ gdbserver_fork(thread_env);
} else {
pthread_mutex_unlock(&exclusive_lock);
pthread_mutex_unlock(&tb_lock);
for (other = first_cpu; other; other = other->next_cpu) {
if (other->running) {
pending_cpus++;
- cpu_interrupt(other, CPU_INTERRUPT_EXIT);
+ cpu_exit(other);
}
}
if (pending_cpus > 1) {
exclusive_idle();
pthread_mutex_unlock(&exclusive_lock);
}
+
+void cpu_list_lock(void)
+{
+ pthread_mutex_lock(&cpu_list_mutex);
+}
+
+void cpu_list_unlock(void)
+{
+ pthread_mutex_unlock(&cpu_list_mutex);
+}
#else /* if !USE_NPTL */
/* These are no-ops because we are not threadsafe. */
static inline void cpu_exec_start(CPUState *env)
}
void fork_end(int child)
+{
+ if (child) {
+ gdbserver_fork(thread_env);
+ }
+}
+
+void cpu_list_lock(void)
+{
+}
+
+void cpu_list_unlock(void)
{
}
#endif
p[1] = tswap32(e2);
}
+static uint64_t *idt_table;
#ifdef TARGET_X86_64
-static uint64_t idt_table[512];
-
static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
uint64_t addr, unsigned int sel)
{
set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
}
#else
-static uint64_t idt_table[256];
-
static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
uint32_t addr, unsigned int sel)
{
queue_signal(env, info.si_signo, &info);
}
break;
- case EXCP01_SSTP:
+ case EXCP01_DB:
case EXCP03_INT3:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
{
info.si_signo = SIGTRAP;
info.si_errno = 0;
- if (trapnr == EXCP01_SSTP) {
+ if (trapnr == EXCP01_DB) {
info.si_code = TARGET_TRAP_BRKPT;
info._sifields._sigfault._addr = env->eip;
} else {
do { \
fprintf(stderr, fmt , ##args); \
cpu_dump_state(env, stderr, fprintf, 0); \
- if (loglevel != 0) { \
- fprintf(logfile, fmt , ##args); \
- cpu_dump_state(env, logfile, fprintf, 0); \
- } \
+ qemu_log(fmt, ##args); \
+ log_cpu_state(env, 0); \
} while (0)
void cpu_loop(CPUPPCState *env)
cpu_abort(env, "Instruction TLB exception while in user mode. "
"Aborting\n");
break;
- case POWERPC_EXCP_DEBUG: /* Debug interrupt */
- /* XXX: check this */
- {
- int sig;
-
- sig = gdb_handlesig(env, TARGET_SIGTRAP);
- if (sig) {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, &info);
- }
- }
- break;
case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
info.si_signo = TARGET_SIGILL;
printf("syscall returned 0x%08x (%d)\n", ret, ret);
#endif
break;
+ case EXCP_DEBUG:
+ {
+ int sig;
+
+ sig = gdb_handlesig(env, TARGET_SIGTRAP);
+ if (sig) {
+ info.si_signo = sig;
+ info.si_errno = 0;
+ info.si_code = TARGET_TRAP_BRKPT;
+ queue_signal(env, info.si_signo, &info);
+ }
+ }
+ break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
"-s size set the stack size in bytes (default=%ld)\n"
"-cpu model select CPU (-cpu ? for list)\n"
"-drop-ld-preload drop LD_PRELOAD for target process\n"
+ "-E var=value sets/modifies targets environment variable(s)\n"
+ "-U var unsets targets environment variable(s)\n"
"\n"
"Debug options:\n"
"-d options activate log (logfile=%s)\n"
"-p pagesize set the host page size to 'pagesize'\n"
+ "-singlestep always run in singlestep mode\n"
"-strace log system calls\n"
"\n"
"Environment variables:\n"
"QEMU_STRACE Print system calls and arguments similar to the\n"
" 'strace' program. Enable by setting to any value.\n"
+ "You can use -E and -U options to set/unset environment variables\n"
+ "for target process. It is possible to provide several variables\n"
+ "by repeating the option. For example:\n"
+ " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
+ "Note that if you provide several changes to single variable\n"
+ "last change will stay in effect.\n"
,
TARGET_ARCH,
interp_prefix,
x86_stack_size,
DEBUG_LOGFILE);
- _exit(1);
+ exit(1);
}
THREAD CPUState *thread_env;
ts->sigqueue_table[i].next = NULL;
}
-int main(int argc, char **argv)
+int main(int argc, char **argv, char **envp)
{
const char *filename;
const char *cpu_model;
int optind;
const char *r;
int gdbstub_port = 0;
- int drop_ld_preload = 0, environ_count = 0;
- char **target_environ, **wrk, **dst;
+ char **target_environ, **wrk;
+ envlist_t *envlist = NULL;
if (argc <= 1)
usage();
+ qemu_cache_utils_init(envp);
+
/* init debug */
cpu_set_log_filename(DEBUG_LOGFILE);
+ if ((envlist = envlist_create()) == NULL) {
+ (void) fprintf(stderr, "Unable to allocate envlist\n");
+ exit(1);
+ }
+
+ /* add current environment into the list */
+ for (wrk = environ; *wrk != NULL; wrk++) {
+ (void) envlist_setenv(envlist, *wrk);
+ }
+
cpu_model = NULL;
optind = 1;
for(;;) {
exit(1);
}
cpu_set_log(mask);
+ } else if (!strcmp(r, "E")) {
+ r = argv[optind++];
+ if (envlist_setenv(envlist, r) != 0)
+ usage();
+ } else if (!strcmp(r, "U")) {
+ r = argv[optind++];
+ if (envlist_unsetenv(envlist, r) != 0)
+ usage();
} else if (!strcmp(r, "s")) {
+ if (optind >= argc)
+ break;
r = argv[optind++];
x86_stack_size = strtol(r, (char **)&r, 0);
if (x86_stack_size <= 0)
} 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) {
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 (strcmp(cpu_model, "?") == 0) {
+ if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
/* XXX: implement xxx_cpu_list for targets that still miss it */
#if defined(cpu_list)
cpu_list(stdout, &fprintf);
#endif
- _exit(1);
+ exit(1);
}
} else if (!strcmp(r, "drop-ld-preload")) {
- drop_ld_preload = 1;
+ (void) envlist_unsetenv(envlist, "LD_PRELOAD");
+ } else if (!strcmp(r, "singlestep")) {
+ singlestep = 1;
} else if (!strcmp(r, "strace")) {
do_strace = 1;
} else
if (optind >= argc)
usage();
filename = argv[optind];
+ exec_path = argv[optind];
/* Zero out regs */
memset(regs, 0, sizeof(struct target_pt_regs));
do_strace = 1;
}
- wrk = environ;
- while (*(wrk++))
- environ_count++;
-
- target_environ = malloc((environ_count + 1) * sizeof(char *));
- if (!target_environ)
- abort();
- for (wrk = environ, dst = target_environ; *wrk; wrk++) {
- if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11))
- continue;
- *(dst++) = strdup(*wrk);
- }
- *dst = NULL; /* NULL terminate target_environ */
+ target_environ = envlist_to_environ(envlist, NULL);
+ envlist_free(envlist);
if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
printf("Error loading %s\n", filename);
free(target_environ);
- if (loglevel) {
- page_dump(logfile);
-
- fprintf(logfile, "start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
- fprintf(logfile, "end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
- fprintf(logfile, "start_code 0x" TARGET_ABI_FMT_lx "\n",
- info->start_code);
- fprintf(logfile, "start_data 0x" TARGET_ABI_FMT_lx "\n",
- info->start_data);
- fprintf(logfile, "end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
- fprintf(logfile, "start_stack 0x" TARGET_ABI_FMT_lx "\n",
- info->start_stack);
- fprintf(logfile, "brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
- fprintf(logfile, "entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
+ if (qemu_log_enabled()) {
+ log_page_dump();
+
+ qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
+ qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
+ qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
+ info->start_code);
+ qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
+ info->start_data);
+ qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
+ qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
+ info->start_stack);
+ qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
+ qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
}
target_set_brk(info->brk);
init_task_state(ts);
ts->info = info;
env->opaque = ts;
- env->user_mode_only = 1;
#if defined(TARGET_I386)
cpu_x86_set_cpl(env, 3);
#endif
/* linux interrupt setup */
- env->idt.base = h2g(idt_table);
- env->idt.limit = sizeof(idt_table) - 1;
+#ifndef TARGET_ABI32
+ env->idt.limit = 511;
+#else
+ env->idt.limit = 255;
+#endif
+ env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
+ PROT_READ|PROT_WRITE,
+ MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+ idt_table = g2h(env->idt.base);
set_idt(0, 0);
set_idt(1, 0);
set_idt(2, 0);
/* linux segment setup */
{
uint64_t *gdt_table;
- gdt_table = qemu_mallocz(sizeof(uint64_t) * TARGET_GDT_ENTRIES);
- env->gdt.base = h2g((unsigned long)gdt_table);
+ env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
+ PROT_READ|PROT_WRITE,
+ MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
+ gdt_table = g2h(env->gdt.base);
#ifdef TARGET_ABI32
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
projects / qemu.git / blobdiff