| /* |
| * qemu user main |
| * |
| * Copyright (c) 2003-2008 Fabrice Bellard |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu-common.h" |
| #include "qemu/units.h" |
| #include "sysemu/tcg.h" |
| #include "qemu-version.h" |
| #include <machine/trap.h> |
| |
| #include "qapi/error.h" |
| #include "qemu.h" |
| #include "qemu/config-file.h" |
| #include "qemu/error-report.h" |
| #include "qemu/path.h" |
| #include "qemu/help_option.h" |
| #include "qemu/module.h" |
| #include "cpu.h" |
| #include "exec/exec-all.h" |
| #include "tcg/tcg.h" |
| #include "qemu/timer.h" |
| #include "qemu/envlist.h" |
| #include "exec/log.h" |
| #include "trace/control.h" |
| |
| int singlestep; |
| unsigned long mmap_min_addr; |
| unsigned long guest_base; |
| bool have_guest_base; |
| unsigned long reserved_va; |
| |
| static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
| const char *qemu_uname_release; |
| extern char **environ; |
| enum BSDType bsd_type; |
| |
| /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so |
| we allocate a bigger stack. Need a better solution, for example |
| by remapping the process stack directly at the right place */ |
| unsigned long x86_stack_size = 512 * 1024; |
| |
| void gemu_log(const char *fmt, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, fmt); |
| vfprintf(stderr, fmt, ap); |
| va_end(ap); |
| } |
| |
| #if defined(TARGET_I386) |
| int cpu_get_pic_interrupt(CPUX86State *env) |
| { |
| return -1; |
| } |
| #endif |
| |
| void fork_start(void) |
| { |
| } |
| |
| void fork_end(int child) |
| { |
| if (child) { |
| gdbserver_fork(thread_cpu); |
| } |
| } |
| |
| #ifdef TARGET_I386 |
| /***********************************************************/ |
| /* CPUX86 core interface */ |
| |
| uint64_t cpu_get_tsc(CPUX86State *env) |
| { |
| return cpu_get_host_ticks(); |
| } |
| |
| static void write_dt(void *ptr, unsigned long addr, unsigned long limit, |
| int flags) |
| { |
| unsigned int e1, e2; |
| uint32_t *p; |
| e1 = (addr << 16) | (limit & 0xffff); |
| e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
| e2 |= flags; |
| p = ptr; |
| p[0] = tswap32(e1); |
| p[1] = tswap32(e2); |
| } |
| |
| static uint64_t *idt_table; |
| #ifdef TARGET_X86_64 |
| static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, |
| uint64_t addr, unsigned int sel) |
| { |
| uint32_t *p, e1, e2; |
| e1 = (addr & 0xffff) | (sel << 16); |
| e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
| p = ptr; |
| p[0] = tswap32(e1); |
| p[1] = tswap32(e2); |
| p[2] = tswap32(addr >> 32); |
| p[3] = 0; |
| } |
| /* only dpl matters as we do only user space emulation */ |
| static void set_idt(int n, unsigned int dpl) |
| { |
| set_gate64(idt_table + n * 2, 0, dpl, 0, 0); |
| } |
| #else |
| static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
| uint32_t addr, unsigned int sel) |
| { |
| uint32_t *p, e1, e2; |
| e1 = (addr & 0xffff) | (sel << 16); |
| e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
| p = ptr; |
| p[0] = tswap32(e1); |
| p[1] = tswap32(e2); |
| } |
| |
| /* only dpl matters as we do only user space emulation */ |
| static void set_idt(int n, unsigned int dpl) |
| { |
| set_gate(idt_table + n, 0, dpl, 0, 0); |
| } |
| #endif |
| |
| void cpu_loop(CPUX86State *env) |
| { |
| CPUState *cs = env_cpu(env); |
| int trapnr; |
| abi_ulong pc; |
| //target_siginfo_t info; |
| |
| for(;;) { |
| cpu_exec_start(cs); |
| trapnr = cpu_exec(cs); |
| cpu_exec_end(cs); |
| process_queued_cpu_work(cs); |
| |
| switch(trapnr) { |
| case 0x80: |
| /* syscall from int $0x80 */ |
| if (bsd_type == target_freebsd) { |
| abi_ulong params = (abi_ulong) env->regs[R_ESP] + |
| sizeof(int32_t); |
| int32_t syscall_nr = env->regs[R_EAX]; |
| int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8; |
| |
| if (syscall_nr == TARGET_FREEBSD_NR_syscall) { |
| get_user_s32(syscall_nr, params); |
| params += sizeof(int32_t); |
| } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) { |
| get_user_s32(syscall_nr, params); |
| params += sizeof(int64_t); |
| } |
| get_user_s32(arg1, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg2, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg3, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg4, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg5, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg6, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg7, params); |
| params += sizeof(int32_t); |
| get_user_s32(arg8, params); |
| env->regs[R_EAX] = do_freebsd_syscall(env, |
| syscall_nr, |
| arg1, |
| arg2, |
| arg3, |
| arg4, |
| arg5, |
| arg6, |
| arg7, |
| arg8); |
| } else { //if (bsd_type == target_openbsd) |
| env->regs[R_EAX] = do_openbsd_syscall(env, |
| env->regs[R_EAX], |
| env->regs[R_EBX], |
| env->regs[R_ECX], |
| env->regs[R_EDX], |
| env->regs[R_ESI], |
| env->regs[R_EDI], |
| env->regs[R_EBP]); |
| } |
| if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { |
| env->regs[R_EAX] = -env->regs[R_EAX]; |
| env->eflags |= CC_C; |
| } else { |
| env->eflags &= ~CC_C; |
| } |
| break; |
| #ifndef TARGET_ABI32 |
| case EXCP_SYSCALL: |
| /* syscall from syscall instruction */ |
| if (bsd_type == target_freebsd) |
| env->regs[R_EAX] = do_freebsd_syscall(env, |
| env->regs[R_EAX], |
| env->regs[R_EDI], |
| env->regs[R_ESI], |
| env->regs[R_EDX], |
| env->regs[R_ECX], |
| env->regs[8], |
| env->regs[9], 0, 0); |
| else { //if (bsd_type == target_openbsd) |
| env->regs[R_EAX] = do_openbsd_syscall(env, |
| env->regs[R_EAX], |
| env->regs[R_EDI], |
| env->regs[R_ESI], |
| env->regs[R_EDX], |
| env->regs[10], |
| env->regs[8], |
| env->regs[9]); |
| } |
| env->eip = env->exception_next_eip; |
| if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { |
| env->regs[R_EAX] = -env->regs[R_EAX]; |
| env->eflags |= CC_C; |
| } else { |
| env->eflags &= ~CC_C; |
| } |
| break; |
| #endif |
| #if 0 |
| case EXCP0B_NOSEG: |
| case EXCP0C_STACK: |
| info.si_signo = SIGBUS; |
| info.si_errno = 0; |
| info.si_code = TARGET_SI_KERNEL; |
| info._sifields._sigfault._addr = 0; |
| queue_signal(env, info.si_signo, &info); |
| break; |
| case EXCP0D_GPF: |
| /* XXX: potential problem if ABI32 */ |
| #ifndef TARGET_X86_64 |
| if (env->eflags & VM_MASK) { |
| handle_vm86_fault(env); |
| } else |
| #endif |
| { |
| info.si_signo = SIGSEGV; |
| info.si_errno = 0; |
| info.si_code = TARGET_SI_KERNEL; |
| info._sifields._sigfault._addr = 0; |
| queue_signal(env, info.si_signo, &info); |
| } |
| break; |
| case EXCP0E_PAGE: |
| info.si_signo = SIGSEGV; |
| info.si_errno = 0; |
| if (!(env->error_code & 1)) |
| info.si_code = TARGET_SEGV_MAPERR; |
| else |
| info.si_code = TARGET_SEGV_ACCERR; |
| info._sifields._sigfault._addr = env->cr[2]; |
| queue_signal(env, info.si_signo, &info); |
| break; |
| case EXCP00_DIVZ: |
| #ifndef TARGET_X86_64 |
| if (env->eflags & VM_MASK) { |
| handle_vm86_trap(env, trapnr); |
| } else |
| #endif |
| { |
| /* division by zero */ |
| info.si_signo = SIGFPE; |
| info.si_errno = 0; |
| info.si_code = TARGET_FPE_INTDIV; |
| info._sifields._sigfault._addr = env->eip; |
| queue_signal(env, info.si_signo, &info); |
| } |
| break; |
| case EXCP01_DB: |
| case EXCP03_INT3: |
| #ifndef TARGET_X86_64 |
| if (env->eflags & VM_MASK) { |
| handle_vm86_trap(env, trapnr); |
| } else |
| #endif |
| { |
| info.si_signo = SIGTRAP; |
| info.si_errno = 0; |
| if (trapnr == EXCP01_DB) { |
| info.si_code = TARGET_TRAP_BRKPT; |
| info._sifields._sigfault._addr = env->eip; |
| } else { |
| info.si_code = TARGET_SI_KERNEL; |
| info._sifields._sigfault._addr = 0; |
| } |
| queue_signal(env, info.si_signo, &info); |
| } |
| break; |
| case EXCP04_INTO: |
| case EXCP05_BOUND: |
| #ifndef TARGET_X86_64 |
| if (env->eflags & VM_MASK) { |
| handle_vm86_trap(env, trapnr); |
| } else |
| #endif |
| { |
| info.si_signo = SIGSEGV; |
| info.si_errno = 0; |
| info.si_code = TARGET_SI_KERNEL; |
| info._sifields._sigfault._addr = 0; |
| queue_signal(env, info.si_signo, &info); |
| } |
| break; |
| case EXCP06_ILLOP: |
| info.si_signo = SIGILL; |
| info.si_errno = 0; |
| info.si_code = TARGET_ILL_ILLOPN; |
| info._sifields._sigfault._addr = env->eip; |
| queue_signal(env, info.si_signo, &info); |
| break; |
| #endif |
| case EXCP_INTERRUPT: |
| /* just indicate that signals should be handled asap */ |
| break; |
| #if 0 |
| case EXCP_DEBUG: |
| { |
| int sig; |
| |
| sig = gdb_handlesig (env, TARGET_SIGTRAP); |
| if (sig) |
| { |
| info.si_signo = sig; |
| info.si_errno = 0; |
| info.si_code = TARGET_TRAP_BRKPT; |
| queue_signal(env, info.si_signo, &info); |
| } |
| } |
| break; |
| #endif |
| default: |
| pc = env->segs[R_CS].base + env->eip; |
| fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", |
| (long)pc, trapnr); |
| abort(); |
| } |
| process_pending_signals(env); |
| } |
| } |
| #endif |
| |
| #ifdef TARGET_SPARC |
| #define SPARC64_STACK_BIAS 2047 |
| |
| //#define DEBUG_WIN |
| /* WARNING: dealing with register windows _is_ complicated. More info |
| can be found at http://www.sics.se/~psm/sparcstack.html */ |
| static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
| { |
| index = (index + cwp * 16) % (16 * env->nwindows); |
| /* wrap handling : if cwp is on the last window, then we use the |
| registers 'after' the end */ |
| if (index < 8 && env->cwp == env->nwindows - 1) |
| index += 16 * env->nwindows; |
| return index; |
| } |
| |
| /* save the register window 'cwp1' */ |
| static inline void save_window_offset(CPUSPARCState *env, int cwp1) |
| { |
| unsigned int i; |
| abi_ulong sp_ptr; |
| |
| sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; |
| #ifdef TARGET_SPARC64 |
| if (sp_ptr & 3) |
| sp_ptr += SPARC64_STACK_BIAS; |
| #endif |
| #if defined(DEBUG_WIN) |
| printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", |
| sp_ptr, cwp1); |
| #endif |
| for(i = 0; i < 16; i++) { |
| /* FIXME - what to do if put_user() fails? */ |
| put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); |
| sp_ptr += sizeof(abi_ulong); |
| } |
| } |
| |
| static void save_window(CPUSPARCState *env) |
| { |
| #ifndef TARGET_SPARC64 |
| unsigned int new_wim; |
| new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & |
| ((1LL << env->nwindows) - 1); |
| save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); |
| env->wim = new_wim; |
| #else |
| /* |
| * cansave is zero if the spill trap handler is triggered by `save` and |
| * nonzero if triggered by a `flushw` |
| */ |
| save_window_offset(env, cpu_cwp_dec(env, env->cwp - env->cansave - 2)); |
| env->cansave++; |
| env->canrestore--; |
| #endif |
| } |
| |
| static void restore_window(CPUSPARCState *env) |
| { |
| #ifndef TARGET_SPARC64 |
| unsigned int new_wim; |
| #endif |
| unsigned int i, cwp1; |
| abi_ulong sp_ptr; |
| |
| #ifndef TARGET_SPARC64 |
| new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & |
| ((1LL << env->nwindows) - 1); |
| #endif |
| |
| /* restore the invalid window */ |
| cwp1 = cpu_cwp_inc(env, env->cwp + 1); |
| sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; |
| #ifdef TARGET_SPARC64 |
| if (sp_ptr & 3) |
| sp_ptr += SPARC64_STACK_BIAS; |
| #endif |
| #if defined(DEBUG_WIN) |
| printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", |
| sp_ptr, cwp1); |
| #endif |
| for(i = 0; i < 16; i++) { |
| /* FIXME - what to do if get_user() fails? */ |
| get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); |
| sp_ptr += sizeof(abi_ulong); |
| } |
| #ifdef TARGET_SPARC64 |
| env->canrestore++; |
| if (env->cleanwin < env->nwindows - 1) |
| env->cleanwin++; |
| env->cansave--; |
| #else |
| env->wim = new_wim; |
| #endif |
| } |
| |
| static void flush_windows(CPUSPARCState *env) |
| { |
| int offset, cwp1; |
| |
| offset = 1; |
| for(;;) { |
| /* if restore would invoke restore_window(), then we can stop */ |
| cwp1 = cpu_cwp_inc(env, env->cwp + offset); |
| #ifndef TARGET_SPARC64 |
| if (env->wim & (1 << cwp1)) |
| break; |
| #else |
| if (env->canrestore == 0) |
| break; |
| env->cansave++; |
| env->canrestore--; |
| #endif |
| save_window_offset(env, cwp1); |
| offset++; |
| } |
| cwp1 = cpu_cwp_inc(env, env->cwp + 1); |
| #ifndef TARGET_SPARC64 |
| /* set wim so that restore will reload the registers */ |
| env->wim = 1 << cwp1; |
| #endif |
| #if defined(DEBUG_WIN) |
| printf("flush_windows: nb=%d\n", offset - 1); |
| #endif |
| } |
| |
| void cpu_loop(CPUSPARCState *env) |
| { |
| CPUState *cs = env_cpu(env); |
| int trapnr, ret, syscall_nr; |
| //target_siginfo_t info; |
| |
| while (1) { |
| cpu_exec_start(cs); |
| trapnr = cpu_exec(cs); |
| cpu_exec_end(cs); |
| process_queued_cpu_work(cs); |
| |
| switch (trapnr) { |
| #ifndef TARGET_SPARC64 |
| case 0x80: |
| #else |
| /* FreeBSD uses 0x141 for syscalls too */ |
| case 0x141: |
| if (bsd_type != target_freebsd) |
| goto badtrap; |
| /* fallthrough */ |
| case 0x100: |
| #endif |
| syscall_nr = env->gregs[1]; |
| if (bsd_type == target_freebsd) |
| ret = do_freebsd_syscall(env, syscall_nr, |
| env->regwptr[0], env->regwptr[1], |
| env->regwptr[2], env->regwptr[3], |
| env->regwptr[4], env->regwptr[5], 0, 0); |
| else if (bsd_type == target_netbsd) |
| ret = do_netbsd_syscall(env, syscall_nr, |
| env->regwptr[0], env->regwptr[1], |
| env->regwptr[2], env->regwptr[3], |
| env->regwptr[4], env->regwptr[5]); |
| else { //if (bsd_type == target_openbsd) |
| #if defined(TARGET_SPARC64) |
| syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | |
| TARGET_OPENBSD_SYSCALL_G2RFLAG); |
| #endif |
| ret = do_openbsd_syscall(env, syscall_nr, |
| env->regwptr[0], env->regwptr[1], |
| env->regwptr[2], env->regwptr[3], |
| env->regwptr[4], env->regwptr[5]); |
| } |
| if ((unsigned int)ret >= (unsigned int)(-515)) { |
| ret = -ret; |
| #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
| env->xcc |= PSR_CARRY; |
| #else |
| env->psr |= PSR_CARRY; |
| #endif |
| } else { |
| #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
| env->xcc &= ~PSR_CARRY; |
| #else |
| env->psr &= ~PSR_CARRY; |
| #endif |
| } |
| env->regwptr[0] = ret; |
| /* next instruction */ |
| #if defined(TARGET_SPARC64) |
| if (bsd_type == target_openbsd && |
| env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) { |
| env->pc = env->gregs[2]; |
| env->npc = env->pc + 4; |
| } else if (bsd_type == target_openbsd && |
| env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) { |
| env->pc = env->gregs[7]; |
| env->npc = env->pc + 4; |
| } else { |
| env->pc = env->npc; |
| env->npc = env->npc + 4; |
| } |
| #else |
| env->pc = env->npc; |
| env->npc = env->npc + 4; |
| #endif |
| break; |
| case 0x83: /* flush windows */ |
| #ifdef TARGET_ABI32 |
| case 0x103: |
| #endif |
| flush_windows(env); |
| /* next instruction */ |
| env->pc = env->npc; |
| env->npc = env->npc + 4; |
| break; |
| #ifndef TARGET_SPARC64 |
| case TT_WIN_OVF: /* window overflow */ |
| save_window(env); |
| break; |
| case TT_WIN_UNF: /* window underflow */ |
| restore_window(env); |
| break; |
| case TT_TFAULT: |
| case TT_DFAULT: |
| #if 0 |
| { |
| info.si_signo = SIGSEGV; |
| info.si_errno = 0; |
| /* XXX: check env->error_code */ |
| info.si_code = TARGET_SEGV_MAPERR; |
| info._sifields._sigfault._addr = env->mmuregs[4]; |
| queue_signal(env, info.si_signo, &info); |
| } |
| #endif |
| break; |
| #else |
| case TT_SPILL: /* window overflow */ |
| save_window(env); |
| break; |
| case TT_FILL: /* window underflow */ |
| restore_window(env); |
| break; |
| case TT_TFAULT: |
| case TT_DFAULT: |
| #if 0 |
| { |
| info.si_signo = SIGSEGV; |
| info.si_errno = 0; |
| /* XXX: check env->error_code */ |
| info.si_code = TARGET_SEGV_MAPERR; |
| if (trapnr == TT_DFAULT) |
| info._sifields._sigfault._addr = env->dmmuregs[4]; |
| else |
| info._sifields._sigfault._addr = env->tsptr->tpc; |
| //queue_signal(env, info.si_signo, &info); |
| } |
| #endif |
| break; |
| #endif |
| case EXCP_INTERRUPT: |
| /* just indicate that signals should be handled asap */ |
| break; |
| case EXCP_DEBUG: |
| { |
| #if 0 |
| int sig = |
| #endif |
| gdb_handlesig(cs, TARGET_SIGTRAP); |
| #if 0 |
| if (sig) |
| { |
| info.si_signo = sig; |
| info.si_errno = 0; |
| info.si_code = TARGET_TRAP_BRKPT; |
| //queue_signal(env, info.si_signo, &info); |
| } |
| #endif |
| } |
| break; |
| default: |
| #ifdef TARGET_SPARC64 |
| badtrap: |
| #endif |
| printf ("Unhandled trap: 0x%x\n", trapnr); |
| cpu_dump_state(cs, stderr, 0); |
| exit (1); |
| } |
| process_pending_signals (env); |
| } |
| } |
| |
| #endif |
| |
| static void usage(void) |
| { |
| printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
| "\n" QEMU_COPYRIGHT "\n" |
| "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
| "BSD CPU emulator (compiled for %s emulation)\n" |
| "\n" |
| "Standard options:\n" |
| "-h print this help\n" |
| "-g port wait gdb connection to port\n" |
| "-L path set the elf interpreter prefix (default=%s)\n" |
| "-s size set the stack size in bytes (default=%ld)\n" |
| "-cpu model select CPU (-cpu help for list)\n" |
| "-drop-ld-preload drop LD_PRELOAD for target process\n" |
| "-E var=value sets/modifies targets environment variable(s)\n" |
| "-U var unsets targets environment variable(s)\n" |
| "-B address set guest_base address to address\n" |
| "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" |
| "\n" |
| "Debug options:\n" |
| "-d item1[,...] enable logging of specified items\n" |
| " (use '-d help' for a list of log items)\n" |
| "-D logfile write logs to 'logfile' (default stderr)\n" |
| "-p pagesize set the host page size to 'pagesize'\n" |
| "-singlestep always run in singlestep mode\n" |
| "-strace log system calls\n" |
| "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
| " specify tracing options\n" |
| "\n" |
| "Environment variables:\n" |
| "QEMU_STRACE Print system calls and arguments similar to the\n" |
| " 'strace' program. Enable by setting to any value.\n" |
| "You can use -E and -U options to set/unset environment variables\n" |
| "for target process. It is possible to provide several variables\n" |
| "by repeating the option. For example:\n" |
| " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" |
| "Note that if you provide several changes to single variable\n" |
| "last change will stay in effect.\n" |
| "\n" |
| QEMU_HELP_BOTTOM "\n" |
| , |
| TARGET_NAME, |
| interp_prefix, |
| x86_stack_size); |
| exit(1); |
| } |
| |
| THREAD CPUState *thread_cpu; |
| |
| bool qemu_cpu_is_self(CPUState *cpu) |
| { |
| return thread_cpu == cpu; |
| } |
| |
| void qemu_cpu_kick(CPUState *cpu) |
| { |
| cpu_exit(cpu); |
| } |
| |
| /* Assumes contents are already zeroed. */ |
| void init_task_state(TaskState *ts) |
| { |
| int i; |
| |
| ts->used = 1; |
| ts->first_free = ts->sigqueue_table; |
| for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { |
| ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; |
| } |
| ts->sigqueue_table[i].next = NULL; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| const char *filename; |
| const char *cpu_model; |
| const char *cpu_type; |
| const char *log_file = NULL; |
| const char *log_mask = NULL; |
| struct target_pt_regs regs1, *regs = ®s1; |
| struct image_info info1, *info = &info1; |
| TaskState ts1, *ts = &ts1; |
| CPUArchState *env; |
| CPUState *cpu; |
| int optind; |
| const char *r; |
| const char *gdbstub = NULL; |
| char **target_environ, **wrk; |
| envlist_t *envlist = NULL; |
| bsd_type = target_openbsd; |
| |
| if (argc <= 1) |
| usage(); |
| |
| error_init(argv[0]); |
| module_call_init(MODULE_INIT_TRACE); |
| qemu_init_cpu_list(); |
| module_call_init(MODULE_INIT_QOM); |
| |
| envlist = envlist_create(); |
| |
| /* add current environment into the list */ |
| for (wrk = environ; *wrk != NULL; wrk++) { |
| (void) envlist_setenv(envlist, *wrk); |
| } |
| |
| cpu_model = NULL; |
| |
| qemu_add_opts(&qemu_trace_opts); |
| |
| optind = 1; |
| for (;;) { |
| if (optind >= argc) |
| break; |
| r = argv[optind]; |
| if (r[0] != '-') |
| break; |
| optind++; |
| r++; |
| if (!strcmp(r, "-")) { |
| break; |
| } else if (!strcmp(r, "d")) { |
| if (optind >= argc) { |
| break; |
| } |
| log_mask = argv[optind++]; |
| } else if (!strcmp(r, "D")) { |
| if (optind >= argc) { |
| break; |
| } |
| log_file = argv[optind++]; |
| } else if (!strcmp(r, "E")) { |
| r = argv[optind++]; |
| if (envlist_setenv(envlist, r) != 0) |
| usage(); |
| } else if (!strcmp(r, "ignore-environment")) { |
| envlist_free(envlist); |
| envlist = envlist_create(); |
| } else if (!strcmp(r, "U")) { |
| r = argv[optind++]; |
| if (envlist_unsetenv(envlist, r) != 0) |
| usage(); |
| } else if (!strcmp(r, "s")) { |
| r = argv[optind++]; |
| x86_stack_size = strtol(r, (char **)&r, 0); |
| if (x86_stack_size <= 0) |
| usage(); |
| if (*r == 'M') |
| x86_stack_size *= MiB; |
| else if (*r == 'k' || *r == 'K') |
| x86_stack_size *= KiB; |
| } else if (!strcmp(r, "L")) { |
| interp_prefix = argv[optind++]; |
| } else if (!strcmp(r, "p")) { |
| qemu_host_page_size = atoi(argv[optind++]); |
| if (qemu_host_page_size == 0 || |
| (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
| fprintf(stderr, "page size must be a power of two\n"); |
| exit(1); |
| } |
| } else if (!strcmp(r, "g")) { |
| gdbstub = g_strdup(argv[optind++]); |
| } else if (!strcmp(r, "r")) { |
| qemu_uname_release = argv[optind++]; |
| } else if (!strcmp(r, "cpu")) { |
| cpu_model = argv[optind++]; |
| if (is_help_option(cpu_model)) { |
| /* XXX: implement xxx_cpu_list for targets that still miss it */ |
| #if defined(cpu_list) |
| cpu_list(); |
| #endif |
| exit(1); |
| } |
| } else if (!strcmp(r, "B")) { |
| guest_base = strtol(argv[optind++], NULL, 0); |
| have_guest_base = true; |
| } else if (!strcmp(r, "drop-ld-preload")) { |
| (void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
| } else if (!strcmp(r, "bsd")) { |
| if (!strcasecmp(argv[optind], "freebsd")) { |
| bsd_type = target_freebsd; |
| } else if (!strcasecmp(argv[optind], "netbsd")) { |
| bsd_type = target_netbsd; |
| } else if (!strcasecmp(argv[optind], "openbsd")) { |
| bsd_type = target_openbsd; |
| } else { |
| usage(); |
| } |
| optind++; |
| } else if (!strcmp(r, "singlestep")) { |
| singlestep = 1; |
| } else if (!strcmp(r, "strace")) { |
| do_strace = 1; |
| } else if (!strcmp(r, "trace")) { |
| trace_opt_parse(optarg); |
| } else { |
| usage(); |
| } |
| } |
| |
| /* init debug */ |
| qemu_log_needs_buffers(); |
| qemu_set_log_filename(log_file, &error_fatal); |
| if (log_mask) { |
| int mask; |
| |
| mask = qemu_str_to_log_mask(log_mask); |
| if (!mask) { |
| qemu_print_log_usage(stdout); |
| exit(1); |
| } |
| qemu_set_log(mask); |
| } |
| |
| if (optind >= argc) { |
| usage(); |
| } |
| filename = argv[optind]; |
| |
| if (!trace_init_backends()) { |
| exit(1); |
| } |
| trace_init_file(); |
| |
| /* Zero out regs */ |
| memset(regs, 0, sizeof(struct target_pt_regs)); |
| |
| /* Zero out image_info */ |
| memset(info, 0, sizeof(struct image_info)); |
| |
| /* Scan interp_prefix dir for replacement files. */ |
| init_paths(interp_prefix); |
| |
| if (cpu_model == NULL) { |
| #if defined(TARGET_I386) |
| #ifdef TARGET_X86_64 |
| cpu_model = "qemu64"; |
| #else |
| cpu_model = "qemu32"; |
| #endif |
| #elif defined(TARGET_SPARC) |
| #ifdef TARGET_SPARC64 |
| cpu_model = "TI UltraSparc II"; |
| #else |
| cpu_model = "Fujitsu MB86904"; |
| #endif |
| #else |
| cpu_model = "any"; |
| #endif |
| } |
| |
| /* init tcg before creating CPUs and to get qemu_host_page_size */ |
| tcg_exec_init(0, false); |
| |
| cpu_type = parse_cpu_option(cpu_model); |
| cpu = cpu_create(cpu_type); |
| env = cpu->env_ptr; |
| #if defined(TARGET_SPARC) || defined(TARGET_PPC) |
| cpu_reset(cpu); |
| #endif |
| thread_cpu = cpu; |
| |
| if (getenv("QEMU_STRACE")) { |
| do_strace = 1; |
| } |
| |
| target_environ = envlist_to_environ(envlist, NULL); |
| envlist_free(envlist); |
| |
| /* |
| * Now that page sizes are configured in tcg_exec_init() we can do |
| * proper page alignment for guest_base. |
| */ |
| guest_base = HOST_PAGE_ALIGN(guest_base); |
| |
| /* |
| * Read in mmap_min_addr kernel parameter. This value is used |
| * When loading the ELF image to determine whether guest_base |
| * is needed. |
| * |
| * When user has explicitly set the quest base, we skip this |
| * test. |
| */ |
| if (!have_guest_base) { |
| FILE *fp; |
| |
| if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { |
| unsigned long tmp; |
| if (fscanf(fp, "%lu", &tmp) == 1) { |
| mmap_min_addr = tmp; |
| qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr); |
| } |
| fclose(fp); |
| } |
| } |
| |
| if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { |
| printf("Error loading %s\n", filename); |
| _exit(1); |
| } |
| |
| for (wrk = target_environ; *wrk; wrk++) { |
| g_free(*wrk); |
| } |
| |
| g_free(target_environ); |
| |
| if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
| qemu_log("guest_base 0x%lx\n", guest_base); |
| log_page_dump("binary load"); |
| |
| qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); |
| qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); |
| qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", |
| info->start_code); |
| qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", |
| info->start_data); |
| qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
| qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", |
| info->start_stack); |
| qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
| qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); |
| } |
| |
| target_set_brk(info->brk); |
| syscall_init(); |
| signal_init(); |
| |
| /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay |
| generating the prologue until now so that the prologue can take |
| the real value of GUEST_BASE into account. */ |
| tcg_prologue_init(tcg_ctx); |
| tcg_region_init(); |
| |
| /* build Task State */ |
| memset(ts, 0, sizeof(TaskState)); |
| init_task_state(ts); |
| ts->info = info; |
| cpu->opaque = ts; |
| |
| #if defined(TARGET_I386) |
| env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; |
| env->hflags |= HF_PE_MASK | HF_CPL_MASK; |
| if (env->features[FEAT_1_EDX] & CPUID_SSE) { |
| env->cr[4] |= CR4_OSFXSR_MASK; |
| env->hflags |= HF_OSFXSR_MASK; |
| } |
| #ifndef TARGET_ABI32 |
| /* enable 64 bit mode if possible */ |
| if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) { |
| fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); |
| exit(1); |
| } |
| env->cr[4] |= CR4_PAE_MASK; |
| env->efer |= MSR_EFER_LMA | MSR_EFER_LME; |
| env->hflags |= HF_LMA_MASK; |
| #endif |
| |
| /* flags setup : we activate the IRQs by default as in user mode */ |
| env->eflags |= IF_MASK; |
| |
| /* linux register setup */ |
| #ifndef TARGET_ABI32 |
| env->regs[R_EAX] = regs->rax; |
| env->regs[R_EBX] = regs->rbx; |
| env->regs[R_ECX] = regs->rcx; |
| env->regs[R_EDX] = regs->rdx; |
| env->regs[R_ESI] = regs->rsi; |
| env->regs[R_EDI] = regs->rdi; |
| env->regs[R_EBP] = regs->rbp; |
| env->regs[R_ESP] = regs->rsp; |
| env->eip = regs->rip; |
| #else |
| env->regs[R_EAX] = regs->eax; |
| env->regs[R_EBX] = regs->ebx; |
| env->regs[R_ECX] = regs->ecx; |
| env->regs[R_EDX] = regs->edx; |
| env->regs[R_ESI] = regs->esi; |
| env->regs[R_EDI] = regs->edi; |
| env->regs[R_EBP] = regs->ebp; |
| env->regs[R_ESP] = regs->esp; |
| env->eip = regs->eip; |
| #endif |
| |
| /* linux interrupt setup */ |
| #ifndef TARGET_ABI32 |
| env->idt.limit = 511; |
| #else |
| env->idt.limit = 255; |
| #endif |
| env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), |
| PROT_READ|PROT_WRITE, |
| MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
| idt_table = g2h(env->idt.base); |
| set_idt(0, 0); |
| set_idt(1, 0); |
| set_idt(2, 0); |
| set_idt(3, 3); |
| set_idt(4, 3); |
| set_idt(5, 0); |
| set_idt(6, 0); |
| set_idt(7, 0); |
| set_idt(8, 0); |
| set_idt(9, 0); |
| set_idt(10, 0); |
| set_idt(11, 0); |
| set_idt(12, 0); |
| set_idt(13, 0); |
| set_idt(14, 0); |
| set_idt(15, 0); |
| set_idt(16, 0); |
| set_idt(17, 0); |
| set_idt(18, 0); |
| set_idt(19, 0); |
| set_idt(0x80, 3); |
| |
| /* linux segment setup */ |
| { |
| uint64_t *gdt_table; |
| env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, |
| PROT_READ|PROT_WRITE, |
| MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
| env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; |
| gdt_table = g2h(env->gdt.base); |
| #ifdef TARGET_ABI32 |
| write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
| DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| #else |
| /* 64 bit code segment */ |
| write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
| DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| DESC_L_MASK | |
| (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| #endif |
| write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
| DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
| } |
| |
| cpu_x86_load_seg(env, R_CS, __USER_CS); |
| cpu_x86_load_seg(env, R_SS, __USER_DS); |
| #ifdef TARGET_ABI32 |
| cpu_x86_load_seg(env, R_DS, __USER_DS); |
| cpu_x86_load_seg(env, R_ES, __USER_DS); |
| cpu_x86_load_seg(env, R_FS, __USER_DS); |
| cpu_x86_load_seg(env, R_GS, __USER_DS); |
| /* This hack makes Wine work... */ |
| env->segs[R_FS].selector = 0; |
| #else |
| cpu_x86_load_seg(env, R_DS, 0); |
| cpu_x86_load_seg(env, R_ES, 0); |
| cpu_x86_load_seg(env, R_FS, 0); |
| cpu_x86_load_seg(env, R_GS, 0); |
| #endif |
| #elif defined(TARGET_SPARC) |
| { |
| int i; |
| env->pc = regs->pc; |
| env->npc = regs->npc; |
| env->y = regs->y; |
| for(i = 0; i < 8; i++) |
| env->gregs[i] = regs->u_regs[i]; |
| for(i = 0; i < 8; i++) |
| env->regwptr[i] = regs->u_regs[i + 8]; |
| } |
| #else |
| #error unsupported target CPU |
| #endif |
| |
| if (gdbstub) { |
| gdbserver_start(gdbstub); |
| gdb_handlesig(cpu, 0); |
| } |
| cpu_loop(env); |
| /* never exits */ |
| return 0; |
| } |
