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/*
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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 <stdlib.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include <machine/trap.h> |
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#include <sys/types.h> |
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#include <sys/mman.h> |
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#include "qemu.h" |
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#include "qemu-common.h" |
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/* For tb_lock */
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#include "exec-all.h" |
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#include "tcg.h" |
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#include "qemu-timer.h" |
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#include "envlist.h" |
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#define DEBUG_LOGFILE "/tmp/qemu.log" |
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int singlestep;
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#if defined(CONFIG_USE_GUEST_BASE)
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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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#endif
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static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
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const char *qemu_uname_release = CONFIG_UNAME_RELEASE; |
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extern char **environ; |
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enum BSDType bsd_type;
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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 x86_stack_size = 512 * 1024; |
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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(CPUState *env)
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{
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return -1; |
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} |
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#endif
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/* These are no-ops because we are not threadsafe. */
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static inline void cpu_exec_start(CPUState *env) |
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{
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} |
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static inline void cpu_exec_end(CPUState *env) |
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{
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} |
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static inline void start_exclusive(void) |
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{
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} |
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static inline void end_exclusive(void) |
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{
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} |
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void fork_start(void) |
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{
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} |
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void fork_end(int child) |
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{
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if (child) {
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gdbserver_fork(thread_env); |
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} |
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} |
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void cpu_list_lock(void) |
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{
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} |
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void cpu_list_unlock(void) |
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{
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} |
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#ifdef TARGET_I386
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/***********************************************************/
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/* CPUX86 core interface */
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void cpu_smm_update(CPUState *env)
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{
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} |
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uint64_t cpu_get_tsc(CPUX86State *env) |
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{
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return cpu_get_real_ticks();
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} |
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static void write_dt(void *ptr, unsigned long addr, unsigned long limit, |
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int flags)
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{
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unsigned int e1, e2; |
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uint32_t *p; |
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e1 = (addr << 16) | (limit & 0xffff); |
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e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
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e2 |= flags; |
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p = ptr; |
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p[0] = tswap32(e1);
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p[1] = tswap32(e2);
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} |
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static uint64_t *idt_table;
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#ifdef TARGET_X86_64
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static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, |
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uint64_t addr, unsigned int sel) |
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{
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uint32_t *p, e1, e2; |
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e1 = (addr & 0xffff) | (sel << 16); |
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e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
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p = ptr; |
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p[0] = tswap32(e1);
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p[1] = tswap32(e2);
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p[2] = tswap32(addr >> 32); |
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p[3] = 0; |
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} |
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/* only dpl matters as we do only user space emulation */
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static void set_idt(int n, unsigned int dpl) |
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{
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set_gate64(idt_table + n * 2, 0, dpl, 0, 0); |
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} |
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#else
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static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
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uint32_t addr, unsigned int sel) |
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{
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uint32_t *p, e1, e2; |
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e1 = (addr & 0xffff) | (sel << 16); |
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e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
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p = ptr; |
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p[0] = tswap32(e1);
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p[1] = tswap32(e2);
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} |
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/* only dpl matters as we do only user space emulation */
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static void set_idt(int n, unsigned int dpl) |
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{
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set_gate(idt_table + n, 0, dpl, 0, 0); |
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} |
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#endif
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void cpu_loop(CPUX86State *env)
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{
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int trapnr;
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abi_ulong pc; |
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//target_siginfo_t info;
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for(;;) {
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trapnr = cpu_x86_exec(env); |
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switch(trapnr) {
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case 0x80: |
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/* syscall from int $0x80 */
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if (bsd_type == target_freebsd) {
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abi_ulong params = (abi_ulong) env->regs[R_ESP] + |
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sizeof(int32_t);
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int32_t syscall_nr = env->regs[R_EAX]; |
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int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8; |
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if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
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get_user_s32(syscall_nr, params); |
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params += sizeof(int32_t);
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} else if (syscall_nr == TARGET_FREEBSD_NR___syscall) { |
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get_user_s32(syscall_nr, params); |
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params += sizeof(int64_t);
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} |
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get_user_s32(arg1, params); |
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params += sizeof(int32_t);
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get_user_s32(arg2, params); |
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params += sizeof(int32_t);
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get_user_s32(arg3, params); |
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params += sizeof(int32_t);
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get_user_s32(arg4, params); |
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params += sizeof(int32_t);
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get_user_s32(arg5, params); |
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params += sizeof(int32_t);
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get_user_s32(arg6, params); |
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params += sizeof(int32_t);
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get_user_s32(arg7, params); |
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params += sizeof(int32_t);
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get_user_s32(arg8, params); |
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env->regs[R_EAX] = do_freebsd_syscall(env, |
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syscall_nr, |
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arg1, |
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arg2, |
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arg3, |
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arg4, |
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arg5, |
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arg6, |
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arg7, |
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arg8); |
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} else { //if (bsd_type == target_openbsd) |
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env->regs[R_EAX] = do_openbsd_syscall(env, |
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env->regs[R_EAX], |
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env->regs[R_EBX], |
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env->regs[R_ECX], |
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env->regs[R_EDX], |
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env->regs[R_ESI], |
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env->regs[R_EDI], |
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env->regs[R_EBP]); |
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} |
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if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { |
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env->regs[R_EAX] = -env->regs[R_EAX]; |
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env->eflags |= CC_C; |
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} else {
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env->eflags &= ~CC_C; |
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} |
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break;
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#ifndef TARGET_ABI32
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case EXCP_SYSCALL:
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/* syscall from syscall intruction */
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if (bsd_type == target_freebsd)
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env->regs[R_EAX] = do_freebsd_syscall(env, |
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env->regs[R_EAX], |
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env->regs[R_EDI], |
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env->regs[R_ESI], |
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env->regs[R_EDX], |
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env->regs[R_ECX], |
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env->regs[8],
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env->regs[9], 0, 0); |
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else { //if (bsd_type == target_openbsd) |
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env->regs[R_EAX] = do_openbsd_syscall(env, |
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env->regs[R_EAX], |
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env->regs[R_EDI], |
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env->regs[R_ESI], |
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env->regs[R_EDX], |
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env->regs[10],
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env->regs[8],
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env->regs[9]);
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} |
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env->eip = env->exception_next_eip; |
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if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { |
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env->regs[R_EAX] = -env->regs[R_EAX]; |
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env->eflags |= CC_C; |
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} else {
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env->eflags &= ~CC_C; |
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} |
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break;
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#endif
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#if 0
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case EXCP0B_NOSEG:
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case EXCP0C_STACK:
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info.si_signo = SIGBUS;
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info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL;
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, &info);
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break;
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case EXCP0D_GPF:
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/* XXX: potential problem if ABI32 */
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#ifndef TARGET_X86_64
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if (env->eflags & VM_MASK) {
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handle_vm86_fault(env);
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} else
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#endif
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{
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info.si_signo = SIGSEGV; |
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info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL; |
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, &info); |
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} |
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break;
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case EXCP0E_PAGE:
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info.si_signo = SIGSEGV; |
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info.si_errno = 0;
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if (!(env->error_code & 1)) |
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info.si_code = TARGET_SEGV_MAPERR; |
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else
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info.si_code = TARGET_SEGV_ACCERR; |
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info._sifields._sigfault._addr = env->cr[2];
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queue_signal(env, info.si_signo, &info); |
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break;
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case EXCP00_DIVZ:
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#ifndef TARGET_X86_64
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if (env->eflags & VM_MASK) {
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handle_vm86_trap(env, trapnr); |
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} else
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#endif
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{
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/* division by zero */
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info.si_signo = SIGFPE; |
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info.si_errno = 0;
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info.si_code = TARGET_FPE_INTDIV; |
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info._sifields._sigfault._addr = env->eip; |
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queue_signal(env, info.si_signo, &info); |
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} |
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break;
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case EXCP01_DB:
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case EXCP03_INT3:
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#ifndef TARGET_X86_64
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if (env->eflags & VM_MASK) {
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handle_vm86_trap(env, trapnr); |
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} else
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#endif
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{
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info.si_signo = SIGTRAP; |
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info.si_errno = 0;
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if (trapnr == EXCP01_DB) {
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info.si_code = TARGET_TRAP_BRKPT; |
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info._sifields._sigfault._addr = env->eip; |
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} else {
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info.si_code = TARGET_SI_KERNEL; |
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info._sifields._sigfault._addr = 0;
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} |
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queue_signal(env, info.si_signo, &info); |
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} |
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break;
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case EXCP04_INTO:
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case EXCP05_BOUND:
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#ifndef TARGET_X86_64
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if (env->eflags & VM_MASK) {
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handle_vm86_trap(env, trapnr); |
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} else
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#endif
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{
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info.si_signo = SIGSEGV; |
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info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL; |
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, &info); |
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} |
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break;
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case EXCP06_ILLOP:
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info.si_signo = SIGILL; |
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info.si_errno = 0;
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info.si_code = TARGET_ILL_ILLOPN; |
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info._sifields._sigfault._addr = env->eip; |
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queue_signal(env, info.si_signo, &info); |
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break;
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#endif
|
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case EXCP_INTERRUPT:
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/* just indicate that signals should be handled asap */
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break;
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#if 0
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case EXCP_DEBUG:
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{
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int sig;
|
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|
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sig = gdb_handlesig (env, TARGET_SIGTRAP);
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if (sig)
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{
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info.si_signo = sig;
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info.si_errno = 0;
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info.si_code = TARGET_TRAP_BRKPT;
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queue_signal(env, info.si_signo, &info);
|
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}
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}
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break;
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#endif
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default:
|
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pc = env->segs[R_CS].base + env->eip; |
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fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
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(long)pc, trapnr);
|
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abort(); |
| 385 |
} |
| 386 |
process_pending_signals(env); |
| 387 |
} |
| 388 |
} |
| 389 |
#endif
|
| 390 |
|
| 391 |
#ifdef TARGET_SPARC
|
| 392 |
#define SPARC64_STACK_BIAS 2047 |
| 393 |
|
| 394 |
//#define DEBUG_WIN
|
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/* WARNING: dealing with register windows _is_ complicated. More info
|
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can be found at http://www.sics.se/~psm/sparcstack.html */
|
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static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
| 398 |
{
|
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index = (index + cwp * 16) % (16 * env->nwindows); |
| 400 |
/* wrap handling : if cwp is on the last window, then we use the
|
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registers 'after' the end */
|
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if (index < 8 && env->cwp == env->nwindows - 1) |
| 403 |
index += 16 * env->nwindows;
|
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return index;
|
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} |
| 406 |
|
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/* save the register window 'cwp1' */
|
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static inline void save_window_offset(CPUSPARCState *env, int cwp1) |
| 409 |
{
|
| 410 |
unsigned int i; |
| 411 |
abi_ulong sp_ptr; |
| 412 |
|
| 413 |
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
|
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#ifdef TARGET_SPARC64
|
| 415 |
if (sp_ptr & 3) |
| 416 |
sp_ptr += SPARC64_STACK_BIAS; |
| 417 |
#endif
|
| 418 |
#if defined(DEBUG_WIN)
|
| 419 |
printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", |
| 420 |
sp_ptr, cwp1); |
| 421 |
#endif
|
| 422 |
for(i = 0; i < 16; i++) { |
| 423 |
/* FIXME - what to do if put_user() fails? */
|
| 424 |
put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
|
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sp_ptr += sizeof(abi_ulong);
|
| 426 |
} |
| 427 |
} |
| 428 |
|
| 429 |
static void save_window(CPUSPARCState *env) |
| 430 |
{
|
| 431 |
#ifndef TARGET_SPARC64
|
| 432 |
unsigned int new_wim; |
| 433 |
new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & |
| 434 |
((1LL << env->nwindows) - 1); |
| 435 |
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
|
| 436 |
env->wim = new_wim; |
| 437 |
#else
|
| 438 |
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
|
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env->cansave++; |
| 440 |
env->canrestore--; |
| 441 |
#endif
|
| 442 |
} |
| 443 |
|
| 444 |
static void restore_window(CPUSPARCState *env) |
| 445 |
{
|
| 446 |
#ifndef TARGET_SPARC64
|
| 447 |
unsigned int new_wim; |
| 448 |
#endif
|
| 449 |
unsigned int i, cwp1; |
| 450 |
abi_ulong sp_ptr; |
| 451 |
|
| 452 |
#ifndef TARGET_SPARC64
|
| 453 |
new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & |
| 454 |
((1LL << env->nwindows) - 1); |
| 455 |
#endif
|
| 456 |
|
| 457 |
/* restore the invalid window */
|
| 458 |
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
|
| 459 |
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
|
| 460 |
#ifdef TARGET_SPARC64
|
| 461 |
if (sp_ptr & 3) |
| 462 |
sp_ptr += SPARC64_STACK_BIAS; |
| 463 |
#endif
|
| 464 |
#if defined(DEBUG_WIN)
|
| 465 |
printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", |
| 466 |
sp_ptr, cwp1); |
| 467 |
#endif
|
| 468 |
for(i = 0; i < 16; i++) { |
| 469 |
/* FIXME - what to do if get_user() fails? */
|
| 470 |
get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
|
| 471 |
sp_ptr += sizeof(abi_ulong);
|
| 472 |
} |
| 473 |
#ifdef TARGET_SPARC64
|
| 474 |
env->canrestore++; |
| 475 |
if (env->cleanwin < env->nwindows - 1) |
| 476 |
env->cleanwin++; |
| 477 |
env->cansave--; |
| 478 |
#else
|
| 479 |
env->wim = new_wim; |
| 480 |
#endif
|
| 481 |
} |
| 482 |
|
| 483 |
static void flush_windows(CPUSPARCState *env) |
| 484 |
{
|
| 485 |
int offset, cwp1;
|
| 486 |
|
| 487 |
offset = 1;
|
| 488 |
for(;;) {
|
| 489 |
/* if restore would invoke restore_window(), then we can stop */
|
| 490 |
cwp1 = cpu_cwp_inc(env, env->cwp + offset); |
| 491 |
#ifndef TARGET_SPARC64
|
| 492 |
if (env->wim & (1 << cwp1)) |
| 493 |
break;
|
| 494 |
#else
|
| 495 |
if (env->canrestore == 0) |
| 496 |
break;
|
| 497 |
env->cansave++; |
| 498 |
env->canrestore--; |
| 499 |
#endif
|
| 500 |
save_window_offset(env, cwp1); |
| 501 |
offset++; |
| 502 |
} |
| 503 |
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
|
| 504 |
#ifndef TARGET_SPARC64
|
| 505 |
/* set wim so that restore will reload the registers */
|
| 506 |
env->wim = 1 << cwp1;
|
| 507 |
#endif
|
| 508 |
#if defined(DEBUG_WIN)
|
| 509 |
printf("flush_windows: nb=%d\n", offset - 1); |
| 510 |
#endif
|
| 511 |
} |
| 512 |
|
| 513 |
void cpu_loop(CPUSPARCState *env)
|
| 514 |
{
|
| 515 |
int trapnr, ret, syscall_nr;
|
| 516 |
//target_siginfo_t info;
|
| 517 |
|
| 518 |
while (1) { |
| 519 |
trapnr = cpu_sparc_exec (env); |
| 520 |
|
| 521 |
switch (trapnr) {
|
| 522 |
#ifndef TARGET_SPARC64
|
| 523 |
case 0x80: |
| 524 |
#else
|
| 525 |
/* FreeBSD uses 0x141 for syscalls too */
|
| 526 |
case 0x141: |
| 527 |
if (bsd_type != target_freebsd)
|
| 528 |
goto badtrap;
|
| 529 |
case 0x100: |
| 530 |
#endif
|
| 531 |
syscall_nr = env->gregs[1];
|
| 532 |
if (bsd_type == target_freebsd)
|
| 533 |
ret = do_freebsd_syscall(env, syscall_nr, |
| 534 |
env->regwptr[0], env->regwptr[1], |
| 535 |
env->regwptr[2], env->regwptr[3], |
| 536 |
env->regwptr[4], env->regwptr[5], 0, 0); |
| 537 |
else if (bsd_type == target_netbsd) |
| 538 |
ret = do_netbsd_syscall(env, syscall_nr, |
| 539 |
env->regwptr[0], env->regwptr[1], |
| 540 |
env->regwptr[2], env->regwptr[3], |
| 541 |
env->regwptr[4], env->regwptr[5]); |
| 542 |
else { //if (bsd_type == target_openbsd) |
| 543 |
#if defined(TARGET_SPARC64)
|
| 544 |
syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | |
| 545 |
TARGET_OPENBSD_SYSCALL_G2RFLAG); |
| 546 |
#endif
|
| 547 |
ret = do_openbsd_syscall(env, syscall_nr, |
| 548 |
env->regwptr[0], env->regwptr[1], |
| 549 |
env->regwptr[2], env->regwptr[3], |
| 550 |
env->regwptr[4], env->regwptr[5]); |
| 551 |
} |
| 552 |
if ((unsigned int)ret >= (unsigned int)(-515)) { |
| 553 |
ret = -ret; |
| 554 |
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
| 555 |
env->xcc |= PSR_CARRY; |
| 556 |
#else
|
| 557 |
env->psr |= PSR_CARRY; |
| 558 |
#endif
|
| 559 |
} else {
|
| 560 |
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
| 561 |
env->xcc &= ~PSR_CARRY; |
| 562 |
#else
|
| 563 |
env->psr &= ~PSR_CARRY; |
| 564 |
#endif
|
| 565 |
} |
| 566 |
env->regwptr[0] = ret;
|
| 567 |
/* next instruction */
|
| 568 |
#if defined(TARGET_SPARC64)
|
| 569 |
if (bsd_type == target_openbsd &&
|
| 570 |
env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
|
| 571 |
env->pc = env->gregs[2];
|
| 572 |
env->npc = env->pc + 4;
|
| 573 |
} else if (bsd_type == target_openbsd && |
| 574 |
env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
|
| 575 |
env->pc = env->gregs[7];
|
| 576 |
env->npc = env->pc + 4;
|
| 577 |
} else {
|
| 578 |
env->pc = env->npc; |
| 579 |
env->npc = env->npc + 4;
|
| 580 |
} |
| 581 |
#else
|
| 582 |
env->pc = env->npc; |
| 583 |
env->npc = env->npc + 4;
|
| 584 |
#endif
|
| 585 |
break;
|
| 586 |
case 0x83: /* flush windows */ |
| 587 |
#ifdef TARGET_ABI32
|
| 588 |
case 0x103: |
| 589 |
#endif
|
| 590 |
flush_windows(env); |
| 591 |
/* next instruction */
|
| 592 |
env->pc = env->npc; |
| 593 |
env->npc = env->npc + 4;
|
| 594 |
break;
|
| 595 |
#ifndef TARGET_SPARC64
|
| 596 |
case TT_WIN_OVF: /* window overflow */ |
| 597 |
save_window(env); |
| 598 |
break;
|
| 599 |
case TT_WIN_UNF: /* window underflow */ |
| 600 |
restore_window(env); |
| 601 |
break;
|
| 602 |
case TT_TFAULT:
|
| 603 |
case TT_DFAULT:
|
| 604 |
#if 0
|
| 605 |
{
|
| 606 |
info.si_signo = SIGSEGV;
|
| 607 |
info.si_errno = 0;
|
| 608 |
/* XXX: check env->error_code */
|
| 609 |
info.si_code = TARGET_SEGV_MAPERR;
|
| 610 |
info._sifields._sigfault._addr = env->mmuregs[4];
|
| 611 |
queue_signal(env, info.si_signo, &info);
|
| 612 |
}
|
| 613 |
#endif
|
| 614 |
break;
|
| 615 |
#else
|
| 616 |
case TT_SPILL: /* window overflow */ |
| 617 |
save_window(env); |
| 618 |
break;
|
| 619 |
case TT_FILL: /* window underflow */ |
| 620 |
restore_window(env); |
| 621 |
break;
|
| 622 |
case TT_TFAULT:
|
| 623 |
case TT_DFAULT:
|
| 624 |
#if 0
|
| 625 |
{
|
| 626 |
info.si_signo = SIGSEGV;
|
| 627 |
info.si_errno = 0;
|
| 628 |
/* XXX: check env->error_code */
|
| 629 |
info.si_code = TARGET_SEGV_MAPERR;
|
| 630 |
if (trapnr == TT_DFAULT)
|
| 631 |
info._sifields._sigfault._addr = env->dmmuregs[4];
|
| 632 |
else
|
| 633 |
info._sifields._sigfault._addr = env->tsptr->tpc;
|
| 634 |
//queue_signal(env, info.si_signo, &info);
|
| 635 |
}
|
| 636 |
#endif
|
| 637 |
break;
|
| 638 |
#endif
|
| 639 |
case EXCP_INTERRUPT:
|
| 640 |
/* just indicate that signals should be handled asap */
|
| 641 |
break;
|
| 642 |
case EXCP_DEBUG:
|
| 643 |
{
|
| 644 |
int sig;
|
| 645 |
|
| 646 |
sig = gdb_handlesig (env, TARGET_SIGTRAP); |
| 647 |
#if 0
|
| 648 |
if (sig)
|
| 649 |
{
|
| 650 |
info.si_signo = sig;
|
| 651 |
info.si_errno = 0;
|
| 652 |
info.si_code = TARGET_TRAP_BRKPT;
|
| 653 |
//queue_signal(env, info.si_signo, &info);
|
| 654 |
}
|
| 655 |
#endif
|
| 656 |
} |
| 657 |
break;
|
| 658 |
default:
|
| 659 |
#ifdef TARGET_SPARC64
|
| 660 |
badtrap:
|
| 661 |
#endif
|
| 662 |
printf ("Unhandled trap: 0x%x\n", trapnr);
|
| 663 |
cpu_dump_state(env, stderr, fprintf, 0);
|
| 664 |
exit (1);
|
| 665 |
} |
| 666 |
process_pending_signals (env); |
| 667 |
} |
| 668 |
} |
| 669 |
|
| 670 |
#endif
|
| 671 |
|
| 672 |
static void usage(void) |
| 673 |
{
|
| 674 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" |
| 675 |
"usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n" |
| 676 |
"BSD CPU emulator (compiled for %s emulation)\n"
|
| 677 |
"\n"
|
| 678 |
"Standard options:\n"
|
| 679 |
"-h print this help\n"
|
| 680 |
"-g port wait gdb connection to port\n"
|
| 681 |
"-L path set the elf interpreter prefix (default=%s)\n"
|
| 682 |
"-s size set the stack size in bytes (default=%ld)\n"
|
| 683 |
"-cpu model select CPU (-cpu ? for list)\n"
|
| 684 |
"-drop-ld-preload drop LD_PRELOAD for target process\n"
|
| 685 |
"-E var=value sets/modifies targets environment variable(s)\n"
|
| 686 |
"-U var unsets targets environment variable(s)\n"
|
| 687 |
#if defined(CONFIG_USE_GUEST_BASE)
|
| 688 |
"-B address set guest_base address to address\n"
|
| 689 |
#endif
|
| 690 |
"-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
|
| 691 |
"\n"
|
| 692 |
"Debug options:\n"
|
| 693 |
"-d options activate log (logfile=%s)\n"
|
| 694 |
"-p pagesize set the host page size to 'pagesize'\n"
|
| 695 |
"-singlestep always run in singlestep mode\n"
|
| 696 |
"-strace log system calls\n"
|
| 697 |
"\n"
|
| 698 |
"Environment variables:\n"
|
| 699 |
"QEMU_STRACE Print system calls and arguments similar to the\n"
|
| 700 |
" 'strace' program. Enable by setting to any value.\n"
|
| 701 |
"You can use -E and -U options to set/unset environment variables\n"
|
| 702 |
"for target process. It is possible to provide several variables\n"
|
| 703 |
"by repeating the option. For example:\n"
|
| 704 |
" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
|
| 705 |
"Note that if you provide several changes to single variable\n"
|
| 706 |
"last change will stay in effect.\n"
|
| 707 |
, |
| 708 |
TARGET_ARCH, |
| 709 |
interp_prefix, |
| 710 |
x86_stack_size, |
| 711 |
DEBUG_LOGFILE); |
| 712 |
exit(1);
|
| 713 |
} |
| 714 |
|
| 715 |
THREAD CPUState *thread_env; |
| 716 |
|
| 717 |
/* Assumes contents are already zeroed. */
|
| 718 |
void init_task_state(TaskState *ts)
|
| 719 |
{
|
| 720 |
int i;
|
| 721 |
|
| 722 |
ts->used = 1;
|
| 723 |
ts->first_free = ts->sigqueue_table; |
| 724 |
for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { |
| 725 |
ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
|
| 726 |
} |
| 727 |
ts->sigqueue_table[i].next = NULL;
|
| 728 |
} |
| 729 |
|
| 730 |
int main(int argc, char **argv) |
| 731 |
{
|
| 732 |
const char *filename; |
| 733 |
const char *cpu_model; |
| 734 |
struct target_pt_regs regs1, *regs = ®s1;
|
| 735 |
struct image_info info1, *info = &info1;
|
| 736 |
TaskState ts1, *ts = &ts1; |
| 737 |
CPUState *env; |
| 738 |
int optind;
|
| 739 |
const char *r; |
| 740 |
int gdbstub_port = 0; |
| 741 |
char **target_environ, **wrk;
|
| 742 |
envlist_t *envlist = NULL;
|
| 743 |
bsd_type = target_openbsd; |
| 744 |
|
| 745 |
if (argc <= 1) |
| 746 |
usage(); |
| 747 |
|
| 748 |
/* init debug */
|
| 749 |
cpu_set_log_filename(DEBUG_LOGFILE); |
| 750 |
|
| 751 |
if ((envlist = envlist_create()) == NULL) { |
| 752 |
(void) fprintf(stderr, "Unable to allocate envlist\n"); |
| 753 |
exit(1);
|
| 754 |
} |
| 755 |
|
| 756 |
/* add current environment into the list */
|
| 757 |
for (wrk = environ; *wrk != NULL; wrk++) { |
| 758 |
(void) envlist_setenv(envlist, *wrk);
|
| 759 |
} |
| 760 |
|
| 761 |
cpu_model = NULL;
|
| 762 |
#if defined(cpudef_setup)
|
| 763 |
cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
|
| 764 |
#endif
|
| 765 |
|
| 766 |
optind = 1;
|
| 767 |
for(;;) {
|
| 768 |
if (optind >= argc)
|
| 769 |
break;
|
| 770 |
r = argv[optind]; |
| 771 |
if (r[0] != '-') |
| 772 |
break;
|
| 773 |
optind++; |
| 774 |
r++; |
| 775 |
if (!strcmp(r, "-")) { |
| 776 |
break;
|
| 777 |
} else if (!strcmp(r, "d")) { |
| 778 |
int mask;
|
| 779 |
const CPULogItem *item;
|
| 780 |
|
| 781 |
if (optind >= argc)
|
| 782 |
break;
|
| 783 |
|
| 784 |
r = argv[optind++]; |
| 785 |
mask = cpu_str_to_log_mask(r); |
| 786 |
if (!mask) {
|
| 787 |
printf("Log items (comma separated):\n");
|
| 788 |
for(item = cpu_log_items; item->mask != 0; item++) { |
| 789 |
printf("%-10s %s\n", item->name, item->help);
|
| 790 |
} |
| 791 |
exit(1);
|
| 792 |
} |
| 793 |
cpu_set_log(mask); |
| 794 |
} else if (!strcmp(r, "E")) { |
| 795 |
r = argv[optind++]; |
| 796 |
if (envlist_setenv(envlist, r) != 0) |
| 797 |
usage(); |
| 798 |
} else if (!strcmp(r, "ignore-environment")) { |
| 799 |
envlist_free(envlist); |
| 800 |
if ((envlist = envlist_create()) == NULL) { |
| 801 |
(void) fprintf(stderr, "Unable to allocate envlist\n"); |
| 802 |
exit(1);
|
| 803 |
} |
| 804 |
} else if (!strcmp(r, "U")) { |
| 805 |
r = argv[optind++]; |
| 806 |
if (envlist_unsetenv(envlist, r) != 0) |
| 807 |
usage(); |
| 808 |
} else if (!strcmp(r, "s")) { |
| 809 |
r = argv[optind++]; |
| 810 |
x86_stack_size = strtol(r, (char **)&r, 0); |
| 811 |
if (x86_stack_size <= 0) |
| 812 |
usage(); |
| 813 |
if (*r == 'M') |
| 814 |
x86_stack_size *= 1024 * 1024; |
| 815 |
else if (*r == 'k' || *r == 'K') |
| 816 |
x86_stack_size *= 1024;
|
| 817 |
} else if (!strcmp(r, "L")) { |
| 818 |
interp_prefix = argv[optind++]; |
| 819 |
} else if (!strcmp(r, "p")) { |
| 820 |
qemu_host_page_size = atoi(argv[optind++]); |
| 821 |
if (qemu_host_page_size == 0 || |
| 822 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
| 823 |
fprintf(stderr, "page size must be a power of two\n");
|
| 824 |
exit(1);
|
| 825 |
} |
| 826 |
} else if (!strcmp(r, "g")) { |
| 827 |
gdbstub_port = atoi(argv[optind++]); |
| 828 |
} else if (!strcmp(r, "r")) { |
| 829 |
qemu_uname_release = argv[optind++]; |
| 830 |
} else if (!strcmp(r, "cpu")) { |
| 831 |
cpu_model = argv[optind++]; |
| 832 |
if (strcmp(cpu_model, "?") == 0) { |
| 833 |
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
| 834 |
#if defined(cpu_list)
|
| 835 |
cpu_list(stdout, &fprintf); |
| 836 |
#endif
|
| 837 |
exit(1);
|
| 838 |
} |
| 839 |
#if defined(CONFIG_USE_GUEST_BASE)
|
| 840 |
} else if (!strcmp(r, "B")) { |
| 841 |
guest_base = strtol(argv[optind++], NULL, 0); |
| 842 |
have_guest_base = 1;
|
| 843 |
#endif
|
| 844 |
} else if (!strcmp(r, "drop-ld-preload")) { |
| 845 |
(void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
| 846 |
} else if (!strcmp(r, "bsd")) { |
| 847 |
if (!strcasecmp(argv[optind], "freebsd")) { |
| 848 |
bsd_type = target_freebsd; |
| 849 |
} else if (!strcasecmp(argv[optind], "netbsd")) { |
| 850 |
bsd_type = target_netbsd; |
| 851 |
} else if (!strcasecmp(argv[optind], "openbsd")) { |
| 852 |
bsd_type = target_openbsd; |
| 853 |
} else {
|
| 854 |
usage(); |
| 855 |
} |
| 856 |
optind++; |
| 857 |
} else if (!strcmp(r, "singlestep")) { |
| 858 |
singlestep = 1;
|
| 859 |
} else if (!strcmp(r, "strace")) { |
| 860 |
do_strace = 1;
|
| 861 |
} else
|
| 862 |
{
|
| 863 |
usage(); |
| 864 |
} |
| 865 |
} |
| 866 |
if (optind >= argc)
|
| 867 |
usage(); |
| 868 |
filename = argv[optind]; |
| 869 |
|
| 870 |
/* Zero out regs */
|
| 871 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
| 872 |
|
| 873 |
/* Zero out image_info */
|
| 874 |
memset(info, 0, sizeof(struct image_info)); |
| 875 |
|
| 876 |
/* Scan interp_prefix dir for replacement files. */
|
| 877 |
init_paths(interp_prefix); |
| 878 |
|
| 879 |
if (cpu_model == NULL) { |
| 880 |
#if defined(TARGET_I386)
|
| 881 |
#ifdef TARGET_X86_64
|
| 882 |
cpu_model = "qemu64";
|
| 883 |
#else
|
| 884 |
cpu_model = "qemu32";
|
| 885 |
#endif
|
| 886 |
#elif defined(TARGET_SPARC)
|
| 887 |
#ifdef TARGET_SPARC64
|
| 888 |
cpu_model = "TI UltraSparc II";
|
| 889 |
#else
|
| 890 |
cpu_model = "Fujitsu MB86904";
|
| 891 |
#endif
|
| 892 |
#else
|
| 893 |
cpu_model = "any";
|
| 894 |
#endif
|
| 895 |
} |
| 896 |
cpu_exec_init_all(0);
|
| 897 |
/* NOTE: we need to init the CPU at this stage to get
|
| 898 |
qemu_host_page_size */
|
| 899 |
env = cpu_init(cpu_model); |
| 900 |
if (!env) {
|
| 901 |
fprintf(stderr, "Unable to find CPU definition\n");
|
| 902 |
exit(1);
|
| 903 |
} |
| 904 |
#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
|
| 905 |
cpu_reset(env); |
| 906 |
#endif
|
| 907 |
thread_env = env; |
| 908 |
|
| 909 |
if (getenv("QEMU_STRACE")) { |
| 910 |
do_strace = 1;
|
| 911 |
} |
| 912 |
|
| 913 |
target_environ = envlist_to_environ(envlist, NULL);
|
| 914 |
envlist_free(envlist); |
| 915 |
|
| 916 |
#if defined(CONFIG_USE_GUEST_BASE)
|
| 917 |
/*
|
| 918 |
* Now that page sizes are configured in cpu_init() we can do
|
| 919 |
* proper page alignment for guest_base.
|
| 920 |
*/
|
| 921 |
guest_base = HOST_PAGE_ALIGN(guest_base); |
| 922 |
|
| 923 |
/*
|
| 924 |
* Read in mmap_min_addr kernel parameter. This value is used
|
| 925 |
* When loading the ELF image to determine whether guest_base
|
| 926 |
* is needed.
|
| 927 |
*
|
| 928 |
* When user has explicitly set the quest base, we skip this
|
| 929 |
* test.
|
| 930 |
*/
|
| 931 |
if (!have_guest_base) {
|
| 932 |
FILE *fp; |
| 933 |
|
| 934 |
if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { |
| 935 |
unsigned long tmp; |
| 936 |
if (fscanf(fp, "%lu", &tmp) == 1) { |
| 937 |
mmap_min_addr = tmp; |
| 938 |
qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
|
| 939 |
} |
| 940 |
fclose(fp); |
| 941 |
} |
| 942 |
} |
| 943 |
#endif /* CONFIG_USE_GUEST_BASE */ |
| 944 |
|
| 945 |
if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { |
| 946 |
printf("Error loading %s\n", filename);
|
| 947 |
_exit(1);
|
| 948 |
} |
| 949 |
|
| 950 |
for (wrk = target_environ; *wrk; wrk++) {
|
| 951 |
free(*wrk); |
| 952 |
} |
| 953 |
|
| 954 |
free(target_environ); |
| 955 |
|
| 956 |
if (qemu_log_enabled()) {
|
| 957 |
#if defined(CONFIG_USE_GUEST_BASE)
|
| 958 |
qemu_log("guest_base 0x%lx\n", guest_base);
|
| 959 |
#endif
|
| 960 |
log_page_dump(); |
| 961 |
|
| 962 |
qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); |
| 963 |
qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); |
| 964 |
qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", |
| 965 |
info->start_code); |
| 966 |
qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", |
| 967 |
info->start_data); |
| 968 |
qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
| 969 |
qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", |
| 970 |
info->start_stack); |
| 971 |
qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
| 972 |
qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); |
| 973 |
} |
| 974 |
|
| 975 |
target_set_brk(info->brk); |
| 976 |
syscall_init(); |
| 977 |
signal_init(); |
| 978 |
|
| 979 |
#if defined(CONFIG_USE_GUEST_BASE)
|
| 980 |
/* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
|
| 981 |
generating the prologue until now so that the prologue can take
|
| 982 |
the real value of GUEST_BASE into account. */
|
| 983 |
tcg_prologue_init(&tcg_ctx); |
| 984 |
#endif
|
| 985 |
|
| 986 |
/* build Task State */
|
| 987 |
memset(ts, 0, sizeof(TaskState)); |
| 988 |
init_task_state(ts); |
| 989 |
ts->info = info; |
| 990 |
env->opaque = ts; |
| 991 |
|
| 992 |
#if defined(TARGET_I386)
|
| 993 |
cpu_x86_set_cpl(env, 3);
|
| 994 |
|
| 995 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
| 996 |
env->hflags |= HF_PE_MASK; |
| 997 |
if (env->cpuid_features & CPUID_SSE) {
|
| 998 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
| 999 |
env->hflags |= HF_OSFXSR_MASK; |
| 1000 |
} |
| 1001 |
#ifndef TARGET_ABI32
|
| 1002 |
/* enable 64 bit mode if possible */
|
| 1003 |
if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
|
| 1004 |
fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
|
| 1005 |
exit(1);
|
| 1006 |
} |
| 1007 |
env->cr[4] |= CR4_PAE_MASK;
|
| 1008 |
env->efer |= MSR_EFER_LMA | MSR_EFER_LME; |
| 1009 |
env->hflags |= HF_LMA_MASK; |
| 1010 |
#endif
|
| 1011 |
|
| 1012 |
/* flags setup : we activate the IRQs by default as in user mode */
|
| 1013 |
env->eflags |= IF_MASK; |
| 1014 |
|
| 1015 |
/* linux register setup */
|
| 1016 |
#ifndef TARGET_ABI32
|
| 1017 |
env->regs[R_EAX] = regs->rax; |
| 1018 |
env->regs[R_EBX] = regs->rbx; |
| 1019 |
env->regs[R_ECX] = regs->rcx; |
| 1020 |
env->regs[R_EDX] = regs->rdx; |
| 1021 |
env->regs[R_ESI] = regs->rsi; |
| 1022 |
env->regs[R_EDI] = regs->rdi; |
| 1023 |
env->regs[R_EBP] = regs->rbp; |
| 1024 |
env->regs[R_ESP] = regs->rsp; |
| 1025 |
env->eip = regs->rip; |
| 1026 |
#else
|
| 1027 |
env->regs[R_EAX] = regs->eax; |
| 1028 |
env->regs[R_EBX] = regs->ebx; |
| 1029 |
env->regs[R_ECX] = regs->ecx; |
| 1030 |
env->regs[R_EDX] = regs->edx; |
| 1031 |
env->regs[R_ESI] = regs->esi; |
| 1032 |
env->regs[R_EDI] = regs->edi; |
| 1033 |
env->regs[R_EBP] = regs->ebp; |
| 1034 |
env->regs[R_ESP] = regs->esp; |
| 1035 |
env->eip = regs->eip; |
| 1036 |
#endif
|
| 1037 |
|
| 1038 |
/* linux interrupt setup */
|
| 1039 |
#ifndef TARGET_ABI32
|
| 1040 |
env->idt.limit = 511;
|
| 1041 |
#else
|
| 1042 |
env->idt.limit = 255;
|
| 1043 |
#endif
|
| 1044 |
env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), |
| 1045 |
PROT_READ|PROT_WRITE, |
| 1046 |
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
| 1047 |
idt_table = g2h(env->idt.base); |
| 1048 |
set_idt(0, 0); |
| 1049 |
set_idt(1, 0); |
| 1050 |
set_idt(2, 0); |
| 1051 |
set_idt(3, 3); |
| 1052 |
set_idt(4, 3); |
| 1053 |
set_idt(5, 0); |
| 1054 |
set_idt(6, 0); |
| 1055 |
set_idt(7, 0); |
| 1056 |
set_idt(8, 0); |
| 1057 |
set_idt(9, 0); |
| 1058 |
set_idt(10, 0); |
| 1059 |
set_idt(11, 0); |
| 1060 |
set_idt(12, 0); |
| 1061 |
set_idt(13, 0); |
| 1062 |
set_idt(14, 0); |
| 1063 |
set_idt(15, 0); |
| 1064 |
set_idt(16, 0); |
| 1065 |
set_idt(17, 0); |
| 1066 |
set_idt(18, 0); |
| 1067 |
set_idt(19, 0); |
| 1068 |
set_idt(0x80, 3); |
| 1069 |
|
| 1070 |
/* linux segment setup */
|
| 1071 |
{
|
| 1072 |
uint64_t *gdt_table; |
| 1073 |
env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, |
| 1074 |
PROT_READ|PROT_WRITE, |
| 1075 |
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
| 1076 |
env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; |
| 1077 |
gdt_table = g2h(env->gdt.base); |
| 1078 |
#ifdef TARGET_ABI32
|
| 1079 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
| 1080 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1081 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| 1082 |
#else
|
| 1083 |
/* 64 bit code segment */
|
| 1084 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
| 1085 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1086 |
DESC_L_MASK | |
| 1087 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| 1088 |
#endif
|
| 1089 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
| 1090 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1091 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
| 1092 |
} |
| 1093 |
|
| 1094 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
| 1095 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
| 1096 |
#ifdef TARGET_ABI32
|
| 1097 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
| 1098 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
| 1099 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
| 1100 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
| 1101 |
/* This hack makes Wine work... */
|
| 1102 |
env->segs[R_FS].selector = 0;
|
| 1103 |
#else
|
| 1104 |
cpu_x86_load_seg(env, R_DS, 0);
|
| 1105 |
cpu_x86_load_seg(env, R_ES, 0);
|
| 1106 |
cpu_x86_load_seg(env, R_FS, 0);
|
| 1107 |
cpu_x86_load_seg(env, R_GS, 0);
|
| 1108 |
#endif
|
| 1109 |
#elif defined(TARGET_SPARC)
|
| 1110 |
{
|
| 1111 |
int i;
|
| 1112 |
env->pc = regs->pc; |
| 1113 |
env->npc = regs->npc; |
| 1114 |
env->y = regs->y; |
| 1115 |
for(i = 0; i < 8; i++) |
| 1116 |
env->gregs[i] = regs->u_regs[i]; |
| 1117 |
for(i = 0; i < 8; i++) |
| 1118 |
env->regwptr[i] = regs->u_regs[i + 8];
|
| 1119 |
} |
| 1120 |
#else
|
| 1121 |
#error unsupported target CPU
|
| 1122 |
#endif
|
| 1123 |
|
| 1124 |
if (gdbstub_port) {
|
| 1125 |
gdbserver_start (gdbstub_port); |
| 1126 |
gdb_handlesig(env, 0);
|
| 1127 |
} |
| 1128 |
cpu_loop(env); |
| 1129 |
/* never exits */
|
| 1130 |
return 0; |
| 1131 |
} |