The value given by mmap_find_vma_reserved() is used with mmap(), so it is needed to be aligned with the host page size. Since commit18e80c55bb
, reserved_va is only aligned to TARGET_PAGE_SIZE, and it works well if this size is greater or equal to the host page size. But ppc64 hosts have 64kB page size and when we start a 4kiB page size guest (like i386), it fails when it tries to mmap the stack: mmap stack: Invalid argument Fixes:18e80c55bb
(linux-user: Tidy and enforce reserved_va initialization) Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180714193553.30846-1-laurent@vivier.eu>
823 lines
23 KiB
C
823 lines
23 KiB
C
/*
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* qemu user main
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu/units.h"
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#include "qemu-version.h"
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#include <sys/syscall.h>
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#include <sys/resource.h>
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#include "qapi/error.h"
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#include "qemu.h"
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#include "qemu/path.h"
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#include "qemu/config-file.h"
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#include "qemu/cutils.h"
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#include "qemu/help_option.h"
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#include "cpu.h"
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#include "exec/exec-all.h"
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#include "tcg.h"
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#include "qemu/timer.h"
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#include "qemu/envlist.h"
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#include "elf.h"
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#include "trace/control.h"
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#include "target_elf.h"
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#include "cpu_loop-common.h"
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char *exec_path;
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int singlestep;
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static const char *filename;
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static const char *argv0;
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static int gdbstub_port;
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static envlist_t *envlist;
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static const char *cpu_model;
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static const char *cpu_type;
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unsigned long mmap_min_addr;
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unsigned long guest_base;
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int have_guest_base;
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/*
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* When running 32-on-64 we should make sure we can fit all of the possible
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* guest address space into a contiguous chunk of virtual host memory.
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*
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* This way we will never overlap with our own libraries or binaries or stack
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* or anything else that QEMU maps.
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*
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* Many cpus reserve the high bit (or more than one for some 64-bit cpus)
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* of the address for the kernel. Some cpus rely on this and user space
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* uses the high bit(s) for pointer tagging and the like. For them, we
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* must preserve the expected address space.
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*/
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#ifndef MAX_RESERVED_VA
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# if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
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# if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
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(TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
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/* There are a number of places where we assign reserved_va to a variable
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of type abi_ulong and expect it to fit. Avoid the last page. */
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# define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK)
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# else
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# define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS)
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# endif
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# else
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# define MAX_RESERVED_VA 0
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# endif
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#endif
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unsigned long reserved_va;
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static void usage(int exitcode);
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static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
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const char *qemu_uname_release;
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/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
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we allocate a bigger stack. Need a better solution, for example
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by remapping the process stack directly at the right place */
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unsigned long guest_stack_size = 8 * 1024 * 1024UL;
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void gemu_log(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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#if defined(TARGET_I386)
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int cpu_get_pic_interrupt(CPUX86State *env)
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{
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return -1;
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}
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#endif
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/***********************************************************/
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/* Helper routines for implementing atomic operations. */
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/* Make sure everything is in a consistent state for calling fork(). */
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void fork_start(void)
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{
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start_exclusive();
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mmap_fork_start();
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cpu_list_lock();
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}
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void fork_end(int child)
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{
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mmap_fork_end(child);
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if (child) {
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CPUState *cpu, *next_cpu;
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/* Child processes created by fork() only have a single thread.
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Discard information about the parent threads. */
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CPU_FOREACH_SAFE(cpu, next_cpu) {
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if (cpu != thread_cpu) {
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QTAILQ_REMOVE(&cpus, cpu, node);
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}
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}
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qemu_init_cpu_list();
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gdbserver_fork(thread_cpu);
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/* qemu_init_cpu_list() takes care of reinitializing the
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* exclusive state, so we don't need to end_exclusive() here.
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*/
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} else {
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cpu_list_unlock();
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end_exclusive();
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}
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}
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__thread CPUState *thread_cpu;
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bool qemu_cpu_is_self(CPUState *cpu)
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{
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return thread_cpu == cpu;
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}
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void qemu_cpu_kick(CPUState *cpu)
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{
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cpu_exit(cpu);
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}
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void task_settid(TaskState *ts)
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{
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if (ts->ts_tid == 0) {
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ts->ts_tid = (pid_t)syscall(SYS_gettid);
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}
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}
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void stop_all_tasks(void)
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{
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/*
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* We trust that when using NPTL, start_exclusive()
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* handles thread stopping correctly.
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*/
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start_exclusive();
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}
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/* Assumes contents are already zeroed. */
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void init_task_state(TaskState *ts)
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{
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ts->used = 1;
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}
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CPUArchState *cpu_copy(CPUArchState *env)
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{
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CPUState *cpu = ENV_GET_CPU(env);
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CPUState *new_cpu = cpu_create(cpu_type);
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CPUArchState *new_env = new_cpu->env_ptr;
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CPUBreakpoint *bp;
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CPUWatchpoint *wp;
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/* Reset non arch specific state */
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cpu_reset(new_cpu);
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memcpy(new_env, env, sizeof(CPUArchState));
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/* Clone all break/watchpoints.
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Note: Once we support ptrace with hw-debug register access, make sure
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BP_CPU break/watchpoints are handled correctly on clone. */
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QTAILQ_INIT(&new_cpu->breakpoints);
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QTAILQ_INIT(&new_cpu->watchpoints);
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QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
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cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL);
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}
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QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
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cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL);
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}
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return new_env;
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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(EXIT_SUCCESS);
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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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mask = qemu_str_to_log_mask(arg);
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if (!mask) {
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qemu_print_log_usage(stdout);
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exit(EXIT_FAILURE);
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}
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qemu_log_needs_buffers();
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qemu_set_log(mask);
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}
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static void handle_arg_dfilter(const char *arg)
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{
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qemu_set_dfilter_ranges(arg, NULL);
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}
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static void handle_arg_log_filename(const char *arg)
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{
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qemu_set_log_filename(arg, &error_fatal);
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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(EXIT_FAILURE);
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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(EXIT_FAILURE);
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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(EXIT_FAILURE);
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}
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if (*p == 'M') {
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guest_stack_size *= MiB;
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} else if (*p == 'k' || *p == 'K') {
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guest_stack_size *= KiB;
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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(EXIT_FAILURE);
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}
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}
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static void handle_arg_randseed(const char *arg)
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{
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unsigned long long seed;
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if (parse_uint_full(arg, &seed, 0) != 0 || seed > UINT_MAX) {
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fprintf(stderr, "Invalid seed number: %s\n", arg);
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exit(EXIT_FAILURE);
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}
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srand(seed);
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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 || is_help_option(cpu_model)) {
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/* XXX: implement xxx_cpu_list for targets that still miss it */
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#if defined(cpu_list)
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cpu_list(stdout, &fprintf);
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#endif
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exit(EXIT_FAILURE);
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}
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}
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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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|| (MAX_RESERVED_VA && reserved_va > MAX_RESERVED_VA)) {
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fprintf(stderr, "Reserved virtual address too big\n");
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exit(EXIT_FAILURE);
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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(EXIT_FAILURE);
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}
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}
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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_NAME " version " QEMU_FULL_VERSION
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"\n" QEMU_COPYRIGHT "\n");
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exit(EXIT_SUCCESS);
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}
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static char *trace_file;
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static void handle_arg_trace(const char *arg)
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{
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g_free(trace_file);
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trace_file = trace_opt_parse(arg);
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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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static const 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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{"help", "", false, handle_arg_help,
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"", ""},
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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 help 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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{"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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{"d", "QEMU_LOG", true, handle_arg_log,
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"item[,...]", "enable logging of specified items "
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"(use '-d help' for a list of items)"},
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{"dfilter", "QEMU_DFILTER", true, handle_arg_dfilter,
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|
"range[,...]","filter logging based on address range"},
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|
{"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename,
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"logfile", "write logs to 'logfile' (default stderr)"},
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{"p", "QEMU_PAGESIZE", true, handle_arg_pagesize,
|
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"pagesize", "set the host page size to 'pagesize'"},
|
|
{"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep,
|
|
"", "run in singlestep mode"},
|
|
{"strace", "QEMU_STRACE", false, handle_arg_strace,
|
|
"", "log system calls"},
|
|
{"seed", "QEMU_RAND_SEED", true, handle_arg_randseed,
|
|
"", "Seed for pseudo-random number generator"},
|
|
{"trace", "QEMU_TRACE", true, handle_arg_trace,
|
|
"", "[[enable=]<pattern>][,events=<file>][,file=<file>]"},
|
|
{"version", "QEMU_VERSION", false, handle_arg_version,
|
|
"", "display version information and exit"},
|
|
{NULL, NULL, false, NULL, NULL, NULL}
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|
};
|
|
|
|
static void usage(int exitcode)
|
|
{
|
|
const struct qemu_argument *arginfo;
|
|
int maxarglen;
|
|
int maxenvlen;
|
|
|
|
printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
|
|
"Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n"
|
|
"\n"
|
|
"Options and associated environment variables:\n"
|
|
"\n");
|
|
|
|
/* Calculate column widths. We must always have at least enough space
|
|
* for the column header.
|
|
*/
|
|
maxarglen = strlen("Argument");
|
|
maxenvlen = strlen("Env-variable");
|
|
|
|
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
|
|
int arglen = strlen(arginfo->argv);
|
|
if (arginfo->has_arg) {
|
|
arglen += strlen(arginfo->example) + 1;
|
|
}
|
|
if (strlen(arginfo->env) > maxenvlen) {
|
|
maxenvlen = strlen(arginfo->env);
|
|
}
|
|
if (arglen > maxarglen) {
|
|
maxarglen = arglen;
|
|
}
|
|
}
|
|
|
|
printf("%-*s %-*s Description\n", maxarglen+1, "Argument",
|
|
maxenvlen, "Env-variable");
|
|
|
|
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
|
|
if (arginfo->has_arg) {
|
|
printf("-%s %-*s %-*s %s\n", arginfo->argv,
|
|
(int)(maxarglen - strlen(arginfo->argv) - 1),
|
|
arginfo->example, maxenvlen, arginfo->env, arginfo->help);
|
|
} else {
|
|
printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv,
|
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maxenvlen, arginfo->env,
|
|
arginfo->help);
|
|
}
|
|
}
|
|
|
|
printf("\n"
|
|
"Defaults:\n"
|
|
"QEMU_LD_PREFIX = %s\n"
|
|
"QEMU_STACK_SIZE = %ld byte\n",
|
|
interp_prefix,
|
|
guest_stack_size);
|
|
|
|
printf("\n"
|
|
"You can use -E and -U options or the QEMU_SET_ENV and\n"
|
|
"QEMU_UNSET_ENV environment variables to set and unset\n"
|
|
"environment variables for the target process.\n"
|
|
"It is possible to provide several variables by separating them\n"
|
|
"by commas in getsubopt(3) style. Additionally it is possible to\n"
|
|
"provide the -E and -U options multiple times.\n"
|
|
"The following lines are equivalent:\n"
|
|
" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
|
|
" -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
|
|
" QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
|
|
"Note that if you provide several changes to a single variable\n"
|
|
"the last change will stay in effect.\n"
|
|
"\n"
|
|
QEMU_HELP_BOTTOM "\n");
|
|
|
|
exit(exitcode);
|
|
}
|
|
|
|
static int parse_args(int argc, char **argv)
|
|
{
|
|
const char *r;
|
|
int optind;
|
|
const struct qemu_argument *arginfo;
|
|
|
|
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
|
|
if (arginfo->env == NULL) {
|
|
continue;
|
|
}
|
|
|
|
r = getenv(arginfo->env);
|
|
if (r != NULL) {
|
|
arginfo->handle_opt(r);
|
|
}
|
|
}
|
|
|
|
optind = 1;
|
|
for (;;) {
|
|
if (optind >= argc) {
|
|
break;
|
|
}
|
|
r = argv[optind];
|
|
if (r[0] != '-') {
|
|
break;
|
|
}
|
|
optind++;
|
|
r++;
|
|
if (!strcmp(r, "-")) {
|
|
break;
|
|
}
|
|
/* Treat --foo the same as -foo. */
|
|
if (r[0] == '-') {
|
|
r++;
|
|
}
|
|
|
|
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
|
|
if (!strcmp(r, arginfo->argv)) {
|
|
if (arginfo->has_arg) {
|
|
if (optind >= argc) {
|
|
(void) fprintf(stderr,
|
|
"qemu: missing argument for option '%s'\n", r);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
arginfo->handle_opt(argv[optind]);
|
|
optind++;
|
|
} else {
|
|
arginfo->handle_opt(NULL);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* no option matched the current argv */
|
|
if (arginfo->handle_opt == NULL) {
|
|
(void) fprintf(stderr, "qemu: unknown option '%s'\n", r);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
if (optind >= argc) {
|
|
(void) fprintf(stderr, "qemu: no user program specified\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
filename = argv[optind];
|
|
exec_path = argv[optind];
|
|
|
|
return optind;
|
|
}
|
|
|
|
int main(int argc, char **argv, char **envp)
|
|
{
|
|
struct target_pt_regs regs1, *regs = ®s1;
|
|
struct image_info info1, *info = &info1;
|
|
struct linux_binprm bprm;
|
|
TaskState *ts;
|
|
CPUArchState *env;
|
|
CPUState *cpu;
|
|
int optind;
|
|
char **target_environ, **wrk;
|
|
char **target_argv;
|
|
int target_argc;
|
|
int i;
|
|
int ret;
|
|
int execfd;
|
|
|
|
module_call_init(MODULE_INIT_TRACE);
|
|
qemu_init_cpu_list();
|
|
module_call_init(MODULE_INIT_QOM);
|
|
|
|
envlist = envlist_create();
|
|
|
|
/* add current environment into the list */
|
|
for (wrk = environ; *wrk != NULL; wrk++) {
|
|
(void) envlist_setenv(envlist, *wrk);
|
|
}
|
|
|
|
/* Read the stack limit from the kernel. If it's "unlimited",
|
|
then we can do little else besides use the default. */
|
|
{
|
|
struct rlimit lim;
|
|
if (getrlimit(RLIMIT_STACK, &lim) == 0
|
|
&& lim.rlim_cur != RLIM_INFINITY
|
|
&& lim.rlim_cur == (target_long)lim.rlim_cur) {
|
|
guest_stack_size = lim.rlim_cur;
|
|
}
|
|
}
|
|
|
|
cpu_model = NULL;
|
|
|
|
srand(time(NULL));
|
|
|
|
qemu_add_opts(&qemu_trace_opts);
|
|
|
|
optind = parse_args(argc, argv);
|
|
|
|
if (!trace_init_backends()) {
|
|
exit(1);
|
|
}
|
|
trace_init_file(trace_file);
|
|
|
|
/* Zero out regs */
|
|
memset(regs, 0, sizeof(struct target_pt_regs));
|
|
|
|
/* Zero out image_info */
|
|
memset(info, 0, sizeof(struct image_info));
|
|
|
|
memset(&bprm, 0, sizeof (bprm));
|
|
|
|
/* Scan interp_prefix dir for replacement files. */
|
|
init_paths(interp_prefix);
|
|
|
|
init_qemu_uname_release();
|
|
|
|
execfd = qemu_getauxval(AT_EXECFD);
|
|
if (execfd == 0) {
|
|
execfd = open(filename, O_RDONLY);
|
|
if (execfd < 0) {
|
|
printf("Error while loading %s: %s\n", filename, strerror(errno));
|
|
_exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
if (cpu_model == NULL) {
|
|
cpu_model = cpu_get_model(get_elf_eflags(execfd));
|
|
}
|
|
cpu_type = parse_cpu_model(cpu_model);
|
|
|
|
/* init tcg before creating CPUs and to get qemu_host_page_size */
|
|
tcg_exec_init(0);
|
|
|
|
/* Reserving *too* much vm space via mmap can run into problems
|
|
with rlimits, oom due to page table creation, etc. We will still try it,
|
|
if directed by the command-line option, but not by default. */
|
|
if (HOST_LONG_BITS == 64 &&
|
|
TARGET_VIRT_ADDR_SPACE_BITS <= 32 &&
|
|
reserved_va == 0) {
|
|
/* reserved_va must be aligned with the host page size
|
|
* as it is used with mmap()
|
|
*/
|
|
reserved_va = MAX_RESERVED_VA & qemu_host_page_mask;
|
|
}
|
|
|
|
cpu = cpu_create(cpu_type);
|
|
env = cpu->env_ptr;
|
|
cpu_reset(cpu);
|
|
|
|
thread_cpu = cpu;
|
|
|
|
if (getenv("QEMU_STRACE")) {
|
|
do_strace = 1;
|
|
}
|
|
|
|
if (getenv("QEMU_RAND_SEED")) {
|
|
handle_arg_randseed(getenv("QEMU_RAND_SEED"));
|
|
}
|
|
|
|
target_environ = envlist_to_environ(envlist, NULL);
|
|
envlist_free(envlist);
|
|
|
|
/*
|
|
* Now that page sizes are configured in tcg_exec_init() we can do
|
|
* proper page alignment for guest_base.
|
|
*/
|
|
guest_base = HOST_PAGE_ALIGN(guest_base);
|
|
|
|
if (reserved_va || have_guest_base) {
|
|
guest_base = init_guest_space(guest_base, reserved_va, 0,
|
|
have_guest_base);
|
|
if (guest_base == (unsigned long)-1) {
|
|
fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address "
|
|
"space for use as guest address space (check your virtual "
|
|
"memory ulimit setting or reserve less using -R option)\n",
|
|
reserved_va);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (reserved_va) {
|
|
mmap_next_start = reserved_va;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read in mmap_min_addr kernel parameter. This value is used
|
|
* When loading the ELF image to determine whether guest_base
|
|
* is needed. It is also used in mmap_find_vma.
|
|
*/
|
|
{
|
|
FILE *fp;
|
|
|
|
if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
|
|
unsigned long tmp;
|
|
if (fscanf(fp, "%lu", &tmp) == 1) {
|
|
mmap_min_addr = tmp;
|
|
qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Prepare copy of argv vector for target.
|
|
*/
|
|
target_argc = argc - optind;
|
|
target_argv = calloc(target_argc + 1, sizeof (char *));
|
|
if (target_argv == NULL) {
|
|
(void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/*
|
|
* If argv0 is specified (using '-0' switch) we replace
|
|
* argv[0] pointer with the given one.
|
|
*/
|
|
i = 0;
|
|
if (argv0 != NULL) {
|
|
target_argv[i++] = strdup(argv0);
|
|
}
|
|
for (; i < target_argc; i++) {
|
|
target_argv[i] = strdup(argv[optind + i]);
|
|
}
|
|
target_argv[target_argc] = NULL;
|
|
|
|
ts = g_new0(TaskState, 1);
|
|
init_task_state(ts);
|
|
/* build Task State */
|
|
ts->info = info;
|
|
ts->bprm = &bprm;
|
|
cpu->opaque = ts;
|
|
task_settid(ts);
|
|
|
|
ret = loader_exec(execfd, filename, target_argv, target_environ, regs,
|
|
info, &bprm);
|
|
if (ret != 0) {
|
|
printf("Error while loading %s: %s\n", filename, strerror(-ret));
|
|
_exit(EXIT_FAILURE);
|
|
}
|
|
|
|
for (wrk = target_environ; *wrk; wrk++) {
|
|
g_free(*wrk);
|
|
}
|
|
|
|
g_free(target_environ);
|
|
|
|
if (qemu_loglevel_mask(CPU_LOG_PAGE)) {
|
|
qemu_log("guest_base 0x%lx\n", guest_base);
|
|
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);
|
|
qemu_log("argv_start 0x" TARGET_ABI_FMT_lx "\n", info->arg_start);
|
|
qemu_log("env_start 0x" TARGET_ABI_FMT_lx "\n",
|
|
info->arg_end + (abi_ulong)sizeof(abi_ulong));
|
|
qemu_log("auxv_start 0x" TARGET_ABI_FMT_lx "\n", info->saved_auxv);
|
|
}
|
|
|
|
target_set_brk(info->brk);
|
|
syscall_init();
|
|
signal_init();
|
|
|
|
/* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
|
|
generating the prologue until now so that the prologue can take
|
|
the real value of GUEST_BASE into account. */
|
|
tcg_prologue_init(tcg_ctx);
|
|
tcg_region_init();
|
|
|
|
target_cpu_copy_regs(env, regs);
|
|
|
|
if (gdbstub_port) {
|
|
if (gdbserver_start(gdbstub_port) < 0) {
|
|
fprintf(stderr, "qemu: could not open gdbserver on port %d\n",
|
|
gdbstub_port);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
gdb_handlesig(cpu, 0);
|
|
}
|
|
cpu_loop(env);
|
|
/* never exits */
|
|
return 0;
|
|
}
|