Пример #1
0
void preexit_cleanup(CPUArchState *env, int code)
{
#ifdef TARGET_GPROF
        _mcleanup();
#endif
#ifdef CONFIG_GCOV
        __gcov_dump();
#endif
        gdb_exit(env, code);
}
Пример #2
0
static void gdb_output_write(const void *buffer, size_t count)
{
	if (!gdb_state.resumed) {
		/* Must be a die_if() in GDB (or a bug), so bail out and die. */
		gdb_exit(-1);
		video_console_init();
		puts("GDB died, redirecting its last words to the screen:\n");
		console_write(buffer, count);
	} else {
		reply.used = 0;
		reply.buf[reply.used++] = 'O';
		gdb_message_encode_bytes(&reply, buffer, count);
		gdb_send_reply(&reply);
	}
}
Пример #3
0
void do_m68k_semihosting(CPUM68KState *env, int nr)
{
    uint32_t args;
    void *p;
    void *q;
    uint32_t len;
    uint32_t result;

    args = env->dregs[1];
    switch (nr) {
    case HOSTED_EXIT:
        gdb_exit(env, env->dregs[0]);
        exit(env->dregs[0]);
    case HOSTED_OPEN:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "open,%s,%x,%x", ARG(0), (int)ARG(1),
                           ARG(2), ARG(3));
            return;
        } else {
            if (!(p = lock_user_string(ARG(0)))) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = open(p, translate_openflags(ARG(2)), ARG(3));
                unlock_user(p, ARG(0), 0);
            }
        }
        break;
    case HOSTED_CLOSE:
        {
            /* Ignore attempts to close stdin/out/err.  */
            int fd = ARG(0);
            if (fd > 2) {
                if (use_gdb_syscalls()) {
                    gdb_do_syscall(m68k_semi_cb, "close,%x", ARG(0));
                    return;
                } else {
                    result = close(fd);
                }
            } else {
                result = 0;
            }
            break;
        }
    case HOSTED_READ:
        len = ARG(2);
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "read,%x,%x,%x",
                           ARG(0), ARG(1), len);
            return;
        } else {
            if (!(p = lock_user(VERIFY_WRITE, ARG(1), len, 0))) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = read(ARG(0), p, len);
                unlock_user(p, ARG(1), len);
            }
        }
        break;
    case HOSTED_WRITE:
        len = ARG(2);
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "write,%x,%x,%x",
                           ARG(0), ARG(1), len);
            return;
        } else {
            if (!(p = lock_user(VERIFY_READ, ARG(1), len, 1))) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = write(ARG(0), p, len);
                unlock_user(p, ARG(0), 0);
            }
        }
        break;
    case HOSTED_LSEEK:
        {
            uint64_t off;
            off = (uint32_t)ARG(2) | ((uint64_t)ARG(1) << 32);
            if (use_gdb_syscalls()) {
                m68k_semi_is_fseek = 1;
                gdb_do_syscall(m68k_semi_cb, "fseek,%x,%lx,%x",
                               ARG(0), off, ARG(3));
            } else {
                off = lseek(ARG(0), off, ARG(3));
                /* FIXME - handle put_user() failure */
                put_user_u32(off >> 32, args);
                put_user_u32(off, args + 4);
                put_user_u32(errno, args + 8);
            }
            return;
        }
    case HOSTED_RENAME:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "rename,%s,%s",
                           ARG(0), (int)ARG(1), ARG(2), (int)ARG(3));
            return;
        } else {
            p = lock_user_string(ARG(0));
            q = lock_user_string(ARG(2));
            if (!p || !q) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = rename(p, q);
            }
            unlock_user(p, ARG(0), 0);
            unlock_user(q, ARG(2), 0);
        }
        break;
    case HOSTED_UNLINK:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "unlink,%s",
                           ARG(0), (int)ARG(1));
            return;
        } else {
            if (!(p = lock_user_string(ARG(0)))) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = unlink(p);
                unlock_user(p, ARG(0), 0);
            }
        }
        break;
    case HOSTED_STAT:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "stat,%s,%x",
                           ARG(0), (int)ARG(1), ARG(2));
            return;
        } else {
            struct stat s;
            if (!(p = lock_user_string(ARG(0)))) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = stat(p, &s);
                unlock_user(p, ARG(0), 0);
            }
            if (result == 0) {
                translate_stat(env, ARG(2), &s);
            }
        }
        break;
    case HOSTED_FSTAT:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "fstat,%x,%x",
                           ARG(0), ARG(1));
            return;
        } else {
            struct stat s;
            result = fstat(ARG(0), &s);
            if (result == 0) {
                translate_stat(env, ARG(1), &s);
            }
        }
        break;
    case HOSTED_GETTIMEOFDAY:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "gettimeofday,%x,%x",
                           ARG(0), ARG(1));
            return;
        } else {
            qemu_timeval tv;
            struct gdb_timeval *p;
            result = qemu_gettimeofday(&tv);
            if (result != 0) {
                if (!(p = lock_user(VERIFY_WRITE,
                                    ARG(0), sizeof(struct gdb_timeval), 0))) {
                    /* FIXME - check error code? */
                    result = -1;
                } else {
                    p->tv_sec = cpu_to_be32(tv.tv_sec);
                    p->tv_usec = cpu_to_be64(tv.tv_usec);
                    unlock_user(p, ARG(0), sizeof(struct gdb_timeval));
                }
            }
        }
        break;
    case HOSTED_ISATTY:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "isatty,%x", ARG(0));
            return;
        } else {
            result = isatty(ARG(0));
        }
        break;
    case HOSTED_SYSTEM:
        if (use_gdb_syscalls()) {
            gdb_do_syscall(m68k_semi_cb, "system,%s",
                           ARG(0), (int)ARG(1));
            return;
        } else {
            if (!(p = lock_user_string(ARG(0)))) {
                /* FIXME - check error code? */
                result = -1;
            } else {
                result = system(p);
                unlock_user(p, ARG(0), 0);
            }
        }
        break;
    case HOSTED_INIT_SIM:
#if defined(CONFIG_USER_ONLY)
        {
        TaskState *ts = env->opaque;
        /* Allocate the heap using sbrk.  */
        if (!ts->heap_limit) {
            abi_ulong ret;
            uint32_t size;
            uint32_t base;

            base = do_brk(0);
            size = SEMIHOSTING_HEAP_SIZE;
            /* Try a big heap, and reduce the size if that fails.  */
            for (;;) {
                ret = do_brk(base + size);
                if (ret >= (base + size)) {
                    break;
                }
                size >>= 1;
            }
            ts->heap_limit = base + size;
        }
        /* This call may happen before we have writable memory, so return
           values directly in registers.  */
        env->dregs[1] = ts->heap_limit;
        env->aregs[7] = ts->stack_base;
        }
#else
        /* FIXME: This is wrong for boards where RAM does not start at
           address zero.  */
        env->dregs[1] = ram_size;
        env->aregs[7] = ram_size;
#endif
        return;
    default:
        cpu_abort(env, "Unsupported semihosting syscall %d\n", nr);
        result = 0;
    }
Пример #4
0
abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
                            abi_long arg2, abi_long arg3, abi_long arg4,
                            abi_long arg5, abi_long arg6)
{
    abi_long ret;
    void *p;

#ifdef DEBUG
    gemu_log("openbsd syscall %d\n", num);
#endif
    if(do_strace)
        print_openbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);

    switch(num) {
    case TARGET_OPENBSD_NR_exit:
#ifdef TARGET_GPROF
        _mcleanup();
#endif
        gdb_exit(cpu_env, arg1);
        /* XXX: should free thread stack and CPU env */
        _exit(arg1);
        ret = 0; /* avoid warning */
        break;
    case TARGET_OPENBSD_NR_read:
        if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
            goto efault;
        ret = get_errno(read(arg1, p, arg3));
        unlock_user(p, arg2, ret);
        break;
    case TARGET_OPENBSD_NR_write:
        if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
            goto efault;
        ret = get_errno(write(arg1, p, arg3));
        unlock_user(p, arg2, 0);
        break;
    case TARGET_OPENBSD_NR_open:
        if (!(p = lock_user_string(arg1)))
            goto efault;
        ret = get_errno(open(path(p),
                             target_to_host_bitmask(arg2, fcntl_flags_tbl),
                             arg3));
        unlock_user(p, arg1, 0);
        break;
    case TARGET_OPENBSD_NR_mmap:
        ret = get_errno(target_mmap(arg1, arg2, arg3,
                                    target_to_host_bitmask(arg4, mmap_flags_tbl),
                                    arg5,
                                    arg6));
        break;
    case TARGET_OPENBSD_NR_mprotect:
        ret = get_errno(target_mprotect(arg1, arg2, arg3));
        break;
    case TARGET_OPENBSD_NR_syscall:
    case TARGET_OPENBSD_NR___syscall:
        ret = do_openbsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
        break;
    default:
        ret = syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
        break;
    }
 fail:
#ifdef DEBUG
    gemu_log(" = %ld\n", ret);
#endif
    if (do_strace)
        print_openbsd_syscall_ret(num, ret);
    return ret;
 efault:
    ret = -TARGET_EFAULT;
    goto fail;
}
Пример #5
0
/* do_syscall() should always have a single exit point at the end so
   that actions, such as logging of syscall results, can be performed.
   All errnos that do_syscall() returns must be -TARGET_<errcode>. */
abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
                            abi_long arg2, abi_long arg3, abi_long arg4,
                            abi_long arg5, abi_long arg6, abi_long arg7,
                            abi_long arg8)
{
    abi_long ret;
    void *p;

#ifdef DEBUG
    gemu_log("freebsd syscall %d\n", num);
#endif
    if(do_strace)
        print_freebsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);

    switch(num) {
    case TARGET_FREEBSD_NR_exit:
#ifdef TARGET_GPROF
        _mcleanup();
#endif
        gdb_exit(cpu_env, arg1);
        /* XXX: should free thread stack and CPU env */
        _exit(arg1);
        ret = 0; /* avoid warning */
        break;
    case TARGET_FREEBSD_NR_read:
        if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
            goto efault;
        ret = get_errno(read(arg1, p, arg3));
        unlock_user(p, arg2, ret);
        break;
    case TARGET_FREEBSD_NR_write:
        if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
            goto efault;
        ret = get_errno(write(arg1, p, arg3));
        unlock_user(p, arg2, 0);
        break;
    case TARGET_FREEBSD_NR_writev:
        {
            int count = arg3;
            struct iovec *vec;

            vec = alloca(count * sizeof(struct iovec));
            if (lock_iovec(VERIFY_READ, vec, arg2, count, 1) < 0)
                goto efault;
            ret = get_errno(writev(arg1, vec, count));
            unlock_iovec(vec, arg2, count, 0);
        }
        break;
    case TARGET_FREEBSD_NR_open:
        if (!(p = lock_user_string(arg1)))
            goto efault;
        ret = get_errno(open(path(p),
                             target_to_host_bitmask(arg2, fcntl_flags_tbl),
                             arg3));
        unlock_user(p, arg1, 0);
        break;
    case TARGET_FREEBSD_NR_mmap:
        ret = get_errno(target_mmap(arg1, arg2, arg3,
                                    target_to_host_bitmask(arg4, mmap_flags_tbl),
                                    arg5,
                                    arg6));
        break;
    case TARGET_FREEBSD_NR_mprotect:
        ret = get_errno(target_mprotect(arg1, arg2, arg3));
        break;
    case TARGET_FREEBSD_NR_break:
        ret = do_obreak(arg1);
        break;
#ifdef __FreeBSD__
    case TARGET_FREEBSD_NR___sysctl:
        ret = do_freebsd_sysctl(arg1, arg2, arg3, arg4, arg5, arg6);
        break;
#endif
    case TARGET_FREEBSD_NR_sysarch:
        ret = do_freebsd_sysarch(cpu_env, arg1, arg2);
        break;
    case TARGET_FREEBSD_NR_syscall:
    case TARGET_FREEBSD_NR___syscall:
        ret = do_freebsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,arg7,arg8,0);
        break;
    default:
        ret = get_errno(syscall(num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8));
        break;
    }
 fail:
#ifdef DEBUG
    gemu_log(" = %ld\n", ret);
#endif
    if (do_strace)
        print_freebsd_syscall_ret(num, ret);
    return ret;
 efault:
    ret = -TARGET_EFAULT;
    goto fail;
}