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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 "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_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; |
347 |
info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL; |
349 |
info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, &info); |
351 |
} |
352 |
break;
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case EXCP06_ILLOP:
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info.si_signo = SIGILL; |
355 |
info.si_errno = 0;
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info.si_code = TARGET_ILL_ILLOPN; |
357 |
info._sifields._sigfault._addr = env->eip; |
358 |
queue_signal(env, info.si_signo, &info); |
359 |
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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368 |
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sig = gdb_handlesig (env, TARGET_SIGTRAP);
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370 |
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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380 |
default:
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pc = env->segs[R_CS].base + env->eip; |
382 |
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
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390 |
|
391 |
#ifdef TARGET_SPARC
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392 |
#define SPARC64_STACK_BIAS 2047 |
393 |
|
394 |
//#define DEBUG_WIN
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395 |
/* WARNING: dealing with register windows _is_ complicated. More info
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396 |
can be found at http://www.sics.se/~psm/sparcstack.html */
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397 |
static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
398 |
{ |
399 |
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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401 |
registers 'after' the end */
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402 |
if (index < 8 && env->cwp == env->nwindows - 1) |
403 |
index += 16 * env->nwindows;
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404 |
return index;
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} |
406 |
|
407 |
/* save the register window 'cwp1' */
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408 |
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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414 |
#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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425 |
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));
|
439 |
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 |
optind = 1;
|
763 |
for(;;) {
|
764 |
if (optind >= argc)
|
765 |
break;
|
766 |
r = argv[optind]; |
767 |
if (r[0] != '-') |
768 |
break;
|
769 |
optind++; |
770 |
r++; |
771 |
if (!strcmp(r, "-")) { |
772 |
break;
|
773 |
} else if (!strcmp(r, "d")) { |
774 |
int mask;
|
775 |
const CPULogItem *item;
|
776 |
|
777 |
if (optind >= argc)
|
778 |
break;
|
779 |
|
780 |
r = argv[optind++]; |
781 |
mask = cpu_str_to_log_mask(r); |
782 |
if (!mask) {
|
783 |
printf("Log items (comma separated):\n");
|
784 |
for(item = cpu_log_items; item->mask != 0; item++) { |
785 |
printf("%-10s %s\n", item->name, item->help);
|
786 |
} |
787 |
exit(1);
|
788 |
} |
789 |
cpu_set_log(mask); |
790 |
} else if (!strcmp(r, "E")) { |
791 |
r = argv[optind++]; |
792 |
if (envlist_setenv(envlist, r) != 0) |
793 |
usage(); |
794 |
} else if (!strcmp(r, "U")) { |
795 |
r = argv[optind++]; |
796 |
if (envlist_unsetenv(envlist, r) != 0) |
797 |
usage(); |
798 |
} else if (!strcmp(r, "s")) { |
799 |
r = argv[optind++]; |
800 |
x86_stack_size = strtol(r, (char **)&r, 0); |
801 |
if (x86_stack_size <= 0) |
802 |
usage(); |
803 |
if (*r == 'M') |
804 |
x86_stack_size *= 1024 * 1024; |
805 |
else if (*r == 'k' || *r == 'K') |
806 |
x86_stack_size *= 1024;
|
807 |
} else if (!strcmp(r, "L")) { |
808 |
interp_prefix = argv[optind++]; |
809 |
} else if (!strcmp(r, "p")) { |
810 |
qemu_host_page_size = atoi(argv[optind++]); |
811 |
if (qemu_host_page_size == 0 || |
812 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
813 |
fprintf(stderr, "page size must be a power of two\n");
|
814 |
exit(1);
|
815 |
} |
816 |
} else if (!strcmp(r, "g")) { |
817 |
gdbstub_port = atoi(argv[optind++]); |
818 |
} else if (!strcmp(r, "r")) { |
819 |
qemu_uname_release = argv[optind++]; |
820 |
} else if (!strcmp(r, "cpu")) { |
821 |
cpu_model = argv[optind++]; |
822 |
if (strcmp(cpu_model, "?") == 0) { |
823 |
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
824 |
#if defined(cpu_list)
|
825 |
cpu_list(stdout, &fprintf); |
826 |
#endif
|
827 |
exit(1);
|
828 |
} |
829 |
#if defined(CONFIG_USE_GUEST_BASE)
|
830 |
} else if (!strcmp(r, "B")) { |
831 |
guest_base = strtol(argv[optind++], NULL, 0); |
832 |
have_guest_base = 1;
|
833 |
#endif
|
834 |
} else if (!strcmp(r, "drop-ld-preload")) { |
835 |
(void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
836 |
} else if (!strcmp(r, "bsd")) { |
837 |
if (!strcasecmp(argv[optind], "freebsd")) { |
838 |
bsd_type = target_freebsd; |
839 |
} else if (!strcasecmp(argv[optind], "netbsd")) { |
840 |
bsd_type = target_netbsd; |
841 |
} else if (!strcasecmp(argv[optind], "openbsd")) { |
842 |
bsd_type = target_openbsd; |
843 |
} else {
|
844 |
usage(); |
845 |
} |
846 |
optind++; |
847 |
} else if (!strcmp(r, "singlestep")) { |
848 |
singlestep = 1;
|
849 |
} else if (!strcmp(r, "strace")) { |
850 |
do_strace = 1;
|
851 |
} else
|
852 |
{ |
853 |
usage(); |
854 |
} |
855 |
} |
856 |
if (optind >= argc)
|
857 |
usage(); |
858 |
filename = argv[optind]; |
859 |
|
860 |
/* Zero out regs */
|
861 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
862 |
|
863 |
/* Zero out image_info */
|
864 |
memset(info, 0, sizeof(struct image_info)); |
865 |
|
866 |
/* Scan interp_prefix dir for replacement files. */
|
867 |
init_paths(interp_prefix); |
868 |
|
869 |
if (cpu_model == NULL) { |
870 |
#if defined(TARGET_I386)
|
871 |
#ifdef TARGET_X86_64
|
872 |
cpu_model = "qemu64";
|
873 |
#else
|
874 |
cpu_model = "qemu32";
|
875 |
#endif
|
876 |
#elif defined(TARGET_SPARC)
|
877 |
#ifdef TARGET_SPARC64
|
878 |
cpu_model = "TI UltraSparc II";
|
879 |
#else
|
880 |
cpu_model = "Fujitsu MB86904";
|
881 |
#endif
|
882 |
#else
|
883 |
cpu_model = "any";
|
884 |
#endif
|
885 |
} |
886 |
cpu_exec_init_all(0);
|
887 |
/* NOTE: we need to init the CPU at this stage to get
|
888 |
qemu_host_page_size */
|
889 |
env = cpu_init(cpu_model); |
890 |
if (!env) {
|
891 |
fprintf(stderr, "Unable to find CPU definition\n");
|
892 |
exit(1);
|
893 |
} |
894 |
#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
|
895 |
cpu_reset(env); |
896 |
#endif
|
897 |
thread_env = env; |
898 |
|
899 |
if (getenv("QEMU_STRACE")) { |
900 |
do_strace = 1;
|
901 |
} |
902 |
|
903 |
target_environ = envlist_to_environ(envlist, NULL);
|
904 |
envlist_free(envlist); |
905 |
|
906 |
#if defined(CONFIG_USE_GUEST_BASE)
|
907 |
/*
|
908 |
* Now that page sizes are configured in cpu_init() we can do
|
909 |
* proper page alignment for guest_base.
|
910 |
*/
|
911 |
guest_base = HOST_PAGE_ALIGN(guest_base); |
912 |
|
913 |
/*
|
914 |
* Read in mmap_min_addr kernel parameter. This value is used
|
915 |
* When loading the ELF image to determine whether guest_base
|
916 |
* is needed.
|
917 |
*
|
918 |
* When user has explicitly set the quest base, we skip this
|
919 |
* test.
|
920 |
*/
|
921 |
if (!have_guest_base) {
|
922 |
FILE *fp; |
923 |
|
924 |
if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { |
925 |
unsigned long tmp; |
926 |
if (fscanf(fp, "%lu", &tmp) == 1) { |
927 |
mmap_min_addr = tmp; |
928 |
qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
|
929 |
} |
930 |
fclose(fp); |
931 |
} |
932 |
} |
933 |
#endif /* CONFIG_USE_GUEST_BASE */ |
934 |
|
935 |
if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { |
936 |
printf("Error loading %s\n", filename);
|
937 |
_exit(1);
|
938 |
} |
939 |
|
940 |
for (wrk = target_environ; *wrk; wrk++) {
|
941 |
free(*wrk); |
942 |
} |
943 |
|
944 |
free(target_environ); |
945 |
|
946 |
if (qemu_log_enabled()) {
|
947 |
#if defined(CONFIG_USE_GUEST_BASE)
|
948 |
qemu_log("guest_base 0x%lx\n", guest_base);
|
949 |
#endif
|
950 |
log_page_dump(); |
951 |
|
952 |
qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); |
953 |
qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); |
954 |
qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", |
955 |
info->start_code); |
956 |
qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", |
957 |
info->start_data); |
958 |
qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
959 |
qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", |
960 |
info->start_stack); |
961 |
qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
962 |
qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); |
963 |
} |
964 |
|
965 |
target_set_brk(info->brk); |
966 |
syscall_init(); |
967 |
signal_init(); |
968 |
|
969 |
/* build Task State */
|
970 |
memset(ts, 0, sizeof(TaskState)); |
971 |
init_task_state(ts); |
972 |
ts->info = info; |
973 |
env->opaque = ts; |
974 |
|
975 |
#if defined(TARGET_I386)
|
976 |
cpu_x86_set_cpl(env, 3);
|
977 |
|
978 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
979 |
env->hflags |= HF_PE_MASK; |
980 |
if (env->cpuid_features & CPUID_SSE) {
|
981 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
982 |
env->hflags |= HF_OSFXSR_MASK; |
983 |
} |
984 |
#ifndef TARGET_ABI32
|
985 |
/* enable 64 bit mode if possible */
|
986 |
if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
|
987 |
fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
|
988 |
exit(1);
|
989 |
} |
990 |
env->cr[4] |= CR4_PAE_MASK;
|
991 |
env->efer |= MSR_EFER_LMA | MSR_EFER_LME; |
992 |
env->hflags |= HF_LMA_MASK; |
993 |
#endif
|
994 |
|
995 |
/* flags setup : we activate the IRQs by default as in user mode */
|
996 |
env->eflags |= IF_MASK; |
997 |
|
998 |
/* linux register setup */
|
999 |
#ifndef TARGET_ABI32
|
1000 |
env->regs[R_EAX] = regs->rax; |
1001 |
env->regs[R_EBX] = regs->rbx; |
1002 |
env->regs[R_ECX] = regs->rcx; |
1003 |
env->regs[R_EDX] = regs->rdx; |
1004 |
env->regs[R_ESI] = regs->rsi; |
1005 |
env->regs[R_EDI] = regs->rdi; |
1006 |
env->regs[R_EBP] = regs->rbp; |
1007 |
env->regs[R_ESP] = regs->rsp; |
1008 |
env->eip = regs->rip; |
1009 |
#else
|
1010 |
env->regs[R_EAX] = regs->eax; |
1011 |
env->regs[R_EBX] = regs->ebx; |
1012 |
env->regs[R_ECX] = regs->ecx; |
1013 |
env->regs[R_EDX] = regs->edx; |
1014 |
env->regs[R_ESI] = regs->esi; |
1015 |
env->regs[R_EDI] = regs->edi; |
1016 |
env->regs[R_EBP] = regs->ebp; |
1017 |
env->regs[R_ESP] = regs->esp; |
1018 |
env->eip = regs->eip; |
1019 |
#endif
|
1020 |
|
1021 |
/* linux interrupt setup */
|
1022 |
#ifndef TARGET_ABI32
|
1023 |
env->idt.limit = 511;
|
1024 |
#else
|
1025 |
env->idt.limit = 255;
|
1026 |
#endif
|
1027 |
env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), |
1028 |
PROT_READ|PROT_WRITE, |
1029 |
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
1030 |
idt_table = g2h(env->idt.base); |
1031 |
set_idt(0, 0); |
1032 |
set_idt(1, 0); |
1033 |
set_idt(2, 0); |
1034 |
set_idt(3, 3); |
1035 |
set_idt(4, 3); |
1036 |
set_idt(5, 0); |
1037 |
set_idt(6, 0); |
1038 |
set_idt(7, 0); |
1039 |
set_idt(8, 0); |
1040 |
set_idt(9, 0); |
1041 |
set_idt(10, 0); |
1042 |
set_idt(11, 0); |
1043 |
set_idt(12, 0); |
1044 |
set_idt(13, 0); |
1045 |
set_idt(14, 0); |
1046 |
set_idt(15, 0); |
1047 |
set_idt(16, 0); |
1048 |
set_idt(17, 0); |
1049 |
set_idt(18, 0); |
1050 |
set_idt(19, 0); |
1051 |
set_idt(0x80, 3); |
1052 |
|
1053 |
/* linux segment setup */
|
1054 |
{ |
1055 |
uint64_t *gdt_table; |
1056 |
env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, |
1057 |
PROT_READ|PROT_WRITE, |
1058 |
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
1059 |
env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; |
1060 |
gdt_table = g2h(env->gdt.base); |
1061 |
#ifdef TARGET_ABI32
|
1062 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
1063 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
1064 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
1065 |
#else
|
1066 |
/* 64 bit code segment */
|
1067 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
1068 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
1069 |
DESC_L_MASK | |
1070 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
1071 |
#endif
|
1072 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
1073 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
1074 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
1075 |
} |
1076 |
|
1077 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
1078 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
1079 |
#ifdef TARGET_ABI32
|
1080 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
1081 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
1082 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
1083 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
1084 |
/* This hack makes Wine work... */
|
1085 |
env->segs[R_FS].selector = 0;
|
1086 |
#else
|
1087 |
cpu_x86_load_seg(env, R_DS, 0);
|
1088 |
cpu_x86_load_seg(env, R_ES, 0);
|
1089 |
cpu_x86_load_seg(env, R_FS, 0);
|
1090 |
cpu_x86_load_seg(env, R_GS, 0);
|
1091 |
#endif
|
1092 |
#elif defined(TARGET_SPARC)
|
1093 |
{ |
1094 |
int i;
|
1095 |
env->pc = regs->pc; |
1096 |
env->npc = regs->npc; |
1097 |
env->y = regs->y; |
1098 |
for(i = 0; i < 8; i++) |
1099 |
env->gregs[i] = regs->u_regs[i]; |
1100 |
for(i = 0; i < 8; i++) |
1101 |
env->regwptr[i] = regs->u_regs[i + 8];
|
1102 |
} |
1103 |
#else
|
1104 |
#error unsupported target CPU
|
1105 |
#endif
|
1106 |
|
1107 |
if (gdbstub_port) {
|
1108 |
gdbserver_start (gdbstub_port); |
1109 |
gdb_handlesig(env, 0);
|
1110 |
} |
1111 |
cpu_loop(env); |
1112 |
/* never exits */
|
1113 |
return 0; |
1114 |
} |