diff options
Diffstat (limited to 'bsd-user/main.c')
| -rw-r--r-- | bsd-user/main.c | 79 |
1 files changed, 46 insertions, 33 deletions
diff --git a/bsd-user/main.c b/bsd-user/main.c index dcad266..7c0a059 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -35,8 +35,9 @@ #include "qemu/path.h" #include "qemu/help_option.h" #include "qemu/module.h" -#include "exec/exec-all.h" +#include "qemu/plugin.h" #include "user/guest-base.h" +#include "user/page-protection.h" #include "tcg/startup.h" #include "qemu/timer.h" #include "qemu/envlist.h" @@ -59,6 +60,7 @@ uintptr_t qemu_host_page_size; intptr_t qemu_host_page_mask; static bool opt_one_insn_per_tb; +static unsigned long opt_tb_size; uintptr_t guest_base; bool have_guest_base; /* @@ -87,10 +89,10 @@ bool have_guest_base; #endif unsigned long reserved_va; +unsigned long guest_addr_max; const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; const char *qemu_uname_release; -char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */ unsigned long target_maxtsiz = TARGET_MAXTSIZ; /* max text size */ unsigned long target_dfldsiz = TARGET_DFLDSIZ; /* initial data size limit */ @@ -104,8 +106,9 @@ unsigned long target_sgrowsiz = TARGET_SGROWSIZ; /* amount to grow stack */ void fork_start(void) { start_exclusive(); - cpu_list_lock(); mmap_fork_start(); + cpu_list_lock(); + qemu_plugin_user_prefork_lock(); gdbserver_fork_start(); } @@ -113,31 +116,31 @@ void fork_end(pid_t pid) { bool child = pid == 0; + qemu_plugin_user_postfork(child); + mmap_fork_end(child); if (child) { CPUState *cpu, *next_cpu; /* - * Child processes created by fork() only have a single thread. Discard - * information about the parent threads. + * Child processes created by fork() only have a single thread. + * Discard information about the parent threads. */ CPU_FOREACH_SAFE(cpu, next_cpu) { if (cpu != thread_cpu) { QTAILQ_REMOVE_RCU(&cpus_queue, cpu, node); } } - mmap_fork_end(child); - /* - * qemu_init_cpu_list() takes care of reinitializing the exclusive - * state, so we don't need to end_exclusive() here. - */ qemu_init_cpu_list(); get_task_state(thread_cpu)->ts_tid = qemu_get_thread_id(); - gdbserver_fork_end(thread_cpu, pid); } else { - mmap_fork_end(child); cpu_list_unlock(); - gdbserver_fork_end(thread_cpu, pid); - end_exclusive(); } + gdbserver_fork_end(thread_cpu, pid); + /* + * qemu_init_cpu_list() reinitialized the child exclusive state, but we + * also need to keep current_cpu consistent, so call end_exclusive() for + * both child and parent. + */ + end_exclusive(); } void cpu_loop(CPUArchState *env) @@ -168,9 +171,13 @@ static void usage(void) " (use '-d help' for a list of log items)\n" "-D logfile write logs to 'logfile' (default stderr)\n" "-one-insn-per-tb run with one guest instruction per emulated TB\n" + "-tb-size size TCG translation block cache size\n" "-strace log system calls\n" "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" " specify tracing options\n" +#ifdef CONFIG_PLUGIN + "-plugin [file=]<file>[,<argname>=<argvalue>]\n" +#endif "\n" "Environment variables:\n" "QEMU_STRACE Print system calls and arguments similar to the\n" @@ -221,6 +228,8 @@ static void init_task_state(TaskState *ts) }; } +static QemuPluginList plugins = QTAILQ_HEAD_INITIALIZER(plugins); + void gemu_log(const char *fmt, ...) { va_list ap; @@ -247,22 +256,6 @@ adjust_ssize(void) setrlimit(RLIMIT_STACK, &rl); } -static void save_proc_pathname(char *argv0) -{ - int mib[4]; - size_t len; - - mib[0] = CTL_KERN; - mib[1] = KERN_PROC; - mib[2] = KERN_PROC_PATHNAME; - mib[3] = -1; - - len = sizeof(qemu_proc_pathname); - if (sysctl(mib, 4, qemu_proc_pathname, &len, NULL, 0)) { - perror("sysctl"); - } -} - int main(int argc, char **argv) { const char *filename; @@ -292,7 +285,6 @@ int main(int argc, char **argv) usage(); } - save_proc_pathname(argv[0]); error_init(argv[0]); module_call_init(MODULE_INIT_TRACE); @@ -320,6 +312,7 @@ int main(int argc, char **argv) cpu_model = NULL; qemu_add_opts(&qemu_trace_opts); + qemu_plugin_add_opts(); optind = 1; for (;;) { @@ -403,10 +396,20 @@ int main(int argc, char **argv) seed_optarg = optarg; } else if (!strcmp(r, "one-insn-per-tb")) { opt_one_insn_per_tb = true; + } else if (!strcmp(r, "tb-size")) { + r = argv[optind++]; + if (qemu_strtoul(r, NULL, 0, &opt_tb_size)) { + usage(); + } } else if (!strcmp(r, "strace")) { do_strace = 1; } else if (!strcmp(r, "trace")) { trace_opt_parse(optarg); +#ifdef CONFIG_PLUGIN + } else if (!strcmp(r, "plugin")) { + r = argv[optind++]; + qemu_plugin_opt_parse(r, &plugins); +#endif } else if (!strcmp(r, "0")) { argv0 = argv[optind++]; } else { @@ -441,6 +444,7 @@ int main(int argc, char **argv) exit(1); } trace_init_file(); + qemu_plugin_load_list(&plugins, &error_fatal); /* Zero out regs */ memset(regs, 0, sizeof(struct target_pt_regs)); @@ -468,6 +472,8 @@ int main(int argc, char **argv) accel_init_interfaces(ac); object_property_set_bool(OBJECT(accel), "one-insn-per-tb", opt_one_insn_per_tb, &error_abort); + object_property_set_int(OBJECT(accel), "tb-size", + opt_tb_size, &error_abort); ac->init_machine(NULL); } @@ -507,6 +513,13 @@ int main(int argc, char **argv) /* MAX_RESERVED_VA + 1 is a large power of 2, so is aligned. */ reserved_va = max_reserved_va; } + if (reserved_va != 0) { + guest_addr_max = reserved_va; + } else if (MIN(TARGET_VIRT_ADDR_SPACE_BITS, TARGET_ABI_BITS) <= 32) { + guest_addr_max = UINT32_MAX; + } else { + guest_addr_max = ~0ul; + } if (getenv("QEMU_STRACE")) { do_strace = 1; @@ -617,6 +630,7 @@ int main(int argc, char **argv) init_task_state(ts); ts->info = info; ts->bprm = &bprm; + ts->ts_tid = qemu_get_thread_id(); cpu->opaque = ts; target_set_brk(info->brk); @@ -633,8 +647,7 @@ int main(int argc, char **argv) target_cpu_init(env, regs); if (gdbstub) { - gdbserver_start(gdbstub); - gdb_handlesig(cpu, 0, NULL, NULL, 0); + gdbserver_start(gdbstub, &error_fatal); } cpu_loop(env); /* never exits */ |