gwj / at91sam9263 · Files

/*
 * QEMU monitor
 * 
 * Copyright (c) 2003-2004 Fabrice Bellard
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "vl.h"

#include "disas.h"

//#define DEBUG

#ifndef offsetof
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif

#define TERM_CMD_BUF_SIZE 4095

#define TERM_MAX_CMDS 64

#define IS_NORM 0
#define IS_ESC  1
#define IS_CSI  2

#define printf do_not_use_printf

static char term_cmd_buf[TERM_CMD_BUF_SIZE + 1];
static int term_cmd_buf_index;
static int term_cmd_buf_size;
static int term_esc_state;
static int term_esc_param;

static char *term_history[TERM_MAX_CMDS];
static int term_hist_entry;

/*
 * Supported types:
 * 
 * 'F'          filename
 * 's'          string (accept optional quote)
 * 'i'          integer
 * '/'          optional gdb-like print format (like "/10x")
 *
 * '?'          optional type (for 'F', 's' and 'i')
 *
 */

typedef struct term_cmd_t {
    const char *name;

    const char *args_type;
    void (*handler)();

    const char *params;
    const char *help;
} term_cmd_t;

static term_cmd_t term_cmds[];
static term_cmd_t info_cmds[];

void term_printf(const char *fmt, ...)
{
    va_list ap;
    va_start(ap, fmt);
    vprintf(fmt, ap);
    va_end(ap);
}

void term_flush(void)
{
    fflush(stdout);
}

static int compare_cmd(const char *name, const char *list)
{
    const char *p, *pstart;
    int len;
    len = strlen(name);
    p = list;
    for(;;) {
        pstart = p;
        p = strchr(p, '|');
        if (!p)
            p = pstart + strlen(pstart);
        if ((p - pstart) == len && !memcmp(pstart, name, len))
            return 1;
        if (*p == '\0')
            break;
        p++;
    }
    return 0;
}

static void help_cmd1(term_cmd_t *cmds, const char *prefix, const char *name)
{
    term_cmd_t *cmd;

    for(cmd = cmds; cmd->name != NULL; cmd++) {
        if (!name || !strcmp(name, cmd->name))
            term_printf("%s%s %s -- %s\n", prefix, cmd->name, cmd->params, cmd->help);
    }
}

static void help_cmd(const char *name)
{
    if (name && !strcmp(name, "info")) {
        help_cmd1(info_cmds, "info ", NULL);
    } else {
        help_cmd1(term_cmds, "", name);

        if (name && !strcmp(name, "log")) {
            CPULogItem *item;
            term_printf("Log items (comma separated):\n");
            term_printf("%-10s %s\n", "none", "remove all logs");
            for(item = cpu_log_items; item->mask != 0; item++) {
                term_printf("%-10s %s\n", item->name, item->help);
            }
        }

    }
}

static void do_help(const char *name)

{

    help_cmd(name);

}

static void do_commit(void)

{
    int i;

    for (i = 0; i < MAX_DISKS; i++) {
        if (bs_table[i])
            bdrv_commit(bs_table[i]);
    }
}

static void do_info(const char *item)

{
    term_cmd_t *cmd;

    if (!item)

        goto help;
    for(cmd = info_cmds; cmd->name != NULL; cmd++) {

        if (compare_cmd(item, cmd->name)) 

            goto found;
    }
 help:

    help_cmd("info");

    return;
 found:

    cmd->handler();

}

static void do_info_network(void)

{
    int i, j;
    NetDriverState *nd;

    for(i = 0; i < nb_nics; i++) {
        nd = &nd_table[i];
        term_printf("%d: ifname=%s macaddr=", i, nd->ifname);
        for(j = 0; j < 6; j++) {
            if (j > 0)
                term_printf(":");
            term_printf("%02x", nd->macaddr[j]);
        }
        term_printf("\n");
    }
}

static void do_info_block(void)

{
    bdrv_info();
}

static void do_info_registers(void)
{
#ifdef TARGET_I386
    cpu_dump_state(cpu_single_env, stdout, X86_DUMP_FPU | X86_DUMP_CCOP);
#else
    cpu_dump_state(cpu_single_env, stdout, 0);
#endif
}

static void do_info_history (void)
{
    int i;

    for (i = 0; i < TERM_MAX_CMDS; i++) {
	if (term_history[i] == NULL)
	    break;
	term_printf("%d: '%s'\n", i, term_history[i]);
    }
}

static void do_quit(void)

{
    exit(0);
}

static int eject_device(BlockDriverState *bs, int force)
{
    if (bdrv_is_inserted(bs)) {
        if (!force) {
            if (!bdrv_is_removable(bs)) {
                term_printf("device is not removable\n");
                return -1;
            }
            if (bdrv_is_locked(bs)) {
                term_printf("device is locked\n");
                return -1;
            }
        }
        bdrv_close(bs);
    }
    return 0;
}

static void do_eject(int force, const char *filename)

{
    BlockDriverState *bs;

    term_printf("%d %s\n", force, filename);

    bs = bdrv_find(filename);

    if (!bs) {
        term_printf("device not found\n");
        return;
    }
    eject_device(bs, force);
}

static void do_change(const char *device, const char *filename)

{
    BlockDriverState *bs;

    bs = bdrv_find(device);

    if (!bs) {
        term_printf("device not found\n");
        return;
    }
    if (eject_device(bs, 0) < 0)
        return;

    bdrv_open(bs, filename, 0);

}

static void do_screen_dump(const char *filename)

{

    vga_screen_dump(filename);

}

static void do_log(const char *items)

{
    int mask;

    if (!strcmp(items, "none")) {

        mask = 0;
    } else {

        mask = cpu_str_to_log_mask(items);

        if (!mask) {

            help_cmd("log");

            return;
        }
    }
    cpu_set_log(mask);
}

static void do_savevm(const char *filename)

{

    if (qemu_savevm(filename) < 0)
        term_printf("I/O error when saving VM to '%s'\n", filename);

}

static void do_loadvm(const char *filename)

{

    if (qemu_loadvm(filename) < 0) 
        term_printf("I/O error when loading VM from '%s'\n", filename);

}

static void do_stop(void)

{
    vm_stop(EXCP_INTERRUPT);
}

static void do_cont(void)

{
    vm_start();
}

#ifdef CONFIG_GDBSTUB

static void do_gdbserver(int has_port, int port)

{

    if (!has_port)
        port = DEFAULT_GDBSTUB_PORT;

    if (gdbserver_start(port) < 0) {
        qemu_printf("Could not open gdbserver socket on port %d\n", port);
    } else {
        qemu_printf("Waiting gdb connection on port %d\n", port);
    }
}

#endif

static void term_printc(int c)
{
    term_printf("'");
    switch(c) {
    case '\'':
        term_printf("\\'");
        break;
    case '\\':
        term_printf("\\\\");
        break;
    case '\n':
        term_printf("\\n");
        break;
    case '\r':
        term_printf("\\r");
        break;
    default:
        if (c >= 32 && c <= 126) {
            term_printf("%c", c);
        } else {
            term_printf("\\x%02x", c);
        }
        break;
    }
    term_printf("'");
}

static void memory_dump(int count, int format, int wsize, 
                        target_ulong addr, int is_physical)
{
    int nb_per_line, l, line_size, i, max_digits, len;
    uint8_t buf[16];
    uint64_t v;

    if (format == 'i') {
        int flags;
        flags = 0;
#ifdef TARGET_I386

        if (wsize == 2) {

            flags = 1;

        } else if (wsize == 4) {
            flags = 0;
        } else {
            /* as default we use the current CS size */
            flags = 0;
            if (!(cpu_single_env->segs[R_CS].flags & DESC_B_MASK))
                flags = 1;
        }
#endif

        monitor_disas(addr, count, is_physical, flags);
        return;
    }

    len = wsize * count;
    if (wsize == 1)
        line_size = 8;
    else
        line_size = 16;
    nb_per_line = line_size / wsize;
    max_digits = 0;

    switch(format) {
    case 'o':
        max_digits = (wsize * 8 + 2) / 3;
        break;
    default:
    case 'x':
        max_digits = (wsize * 8) / 4;
        break;
    case 'u':
    case 'd':
        max_digits = (wsize * 8 * 10 + 32) / 33;
        break;
    case 'c':
        wsize = 1;
        break;
    }

    while (len > 0) {
        term_printf("0x%08x:", addr);
        l = len;
        if (l > line_size)
            l = line_size;
        if (is_physical) {
            cpu_physical_memory_rw(addr, buf, l, 0);
        } else {
            cpu_memory_rw_debug(cpu_single_env, addr, buf, l, 0);
        }
        i = 0; 
        while (i < l) {
            switch(wsize) {
            default:
            case 1:
                v = ldub_raw(buf + i);
                break;
            case 2:
                v = lduw_raw(buf + i);
                break;
            case 4:
                v = ldl_raw(buf + i);
                break;
            case 8:
                v = ldq_raw(buf + i);
                break;
            }
            term_printf(" ");
            switch(format) {
            case 'o':
                term_printf("%#*llo", max_digits, v);
                break;
            case 'x':
                term_printf("0x%0*llx", max_digits, v);
                break;
            case 'u':
                term_printf("%*llu", max_digits, v);
                break;
            case 'd':
                term_printf("%*lld", max_digits, v);
                break;
            case 'c':
                term_printc(v);
                break;
            }
            i += wsize;
        }
        term_printf("\n");
        addr += l;
        len -= l;
    }
}

static void do_memory_dump(int count, int format, int size, int addr)
{
    memory_dump(count, format, size, addr, 0);
}

static void do_physical_memory_dump(int count, int format, int size, int addr)
{
    memory_dump(count, format, size, addr, 1);
}

static void do_print(int count, int format, int size, int val)
{
    switch(format) {
    case 'o':
        term_printf("%#o", val);
        break;
    case 'x':
        term_printf("%#x", val);
        break;
    case 'u':
        term_printf("%u", val);
        break;
    default:
    case 'd':
        term_printf("%d", val);
        break;
    case 'c':
        term_printc(val);
        break;
    }
    term_printf("\n");
}

static term_cmd_t term_cmds[] = {

    { "help|?", "s?", do_help, 

      "[cmd]", "show the help" },

    { "commit", "", do_commit, 

      "", "commit changes to the disk images (if -snapshot is used)" },

    { "info", "s?", do_info,

      "subcommand", "show various information about the system state" },

    { "q|quit", "", do_quit,

      "", "quit the emulator" },

    { "eject", "-fs", do_eject,

      "[-f] device", "eject a removable media (use -f to force it)" },

    { "change", "sF", do_change,

      "device filename", "change a removable media" },

    { "screendump", "F", do_screen_dump, 

      "filename", "save screen into PPM image 'filename'" },

    { "log", "s", do_log,

      "item1[,...]", "activate logging of the specified items to '/tmp/qemu.log'" }, 

    { "savevm", "F", do_savevm,

      "filename", "save the whole virtual machine state to 'filename'" }, 

    { "loadvm", "F", do_loadvm,

      "filename", "restore the whole virtual machine state from 'filename'" }, 

    { "stop", "", do_stop, 
      "", "stop emulation", },
    { "c|cont", "", do_cont, 
      "", "resume emulation", },

#ifdef CONFIG_GDBSTUB

    { "gdbserver", "i?", do_gdbserver, 
      "[port]", "start gdbserver session (default port=1234)", },

#endif

    { "x", "/i", do_memory_dump, 
      "/fmt addr", "virtual memory dump starting at 'addr'", },
    { "xp", "/i", do_physical_memory_dump, 
      "/fmt addr", "physical memory dump starting at 'addr'", },
    { "p|print", "/i", do_print, 
      "/fmt expr", "print expression value (use $reg for CPU register access)", },

    { NULL, NULL, }, 

};

static term_cmd_t info_cmds[] = {

    { "network", "", do_info_network,

      "", "show the network state" },

    { "block", "", do_info_block,

      "", "show the block devices" },

    { "registers", "", do_info_registers,
      "", "show the cpu registers" },

    { "history", "", do_info_history,
      "", "show the command line history", },

    { "pic", "", pic_info,
      "", "show i8259 (PIC) state", },

    { NULL, NULL, },
};

/*******************************************************************/

static const char *pch;
static jmp_buf expr_env;

typedef struct MonitorDef {
    const char *name;
    int offset;
    int (*get_value)(struct MonitorDef *md);
} MonitorDef;

#if defined(TARGET_I386)
static int monitor_get_pc (struct MonitorDef *md)
{
    return cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base;
}
#endif

#if defined(TARGET_PPC)
static int monitor_get_ccr (struct MonitorDef *md)
{
    unsigned int u;
    int i;

    u = 0;
    for (i = 0; i < 8; i++)
	u |= cpu_single_env->crf[i] << (32 - (4 * i));

    return u;
}

static int monitor_get_msr (struct MonitorDef *md)
{
    return (cpu_single_env->msr[MSR_POW] << MSR_POW) |
        (cpu_single_env->msr[MSR_ILE] << MSR_ILE) |
        (cpu_single_env->msr[MSR_EE] << MSR_EE) |
        (cpu_single_env->msr[MSR_PR] << MSR_PR) |
        (cpu_single_env->msr[MSR_FP] << MSR_FP) |
        (cpu_single_env->msr[MSR_ME] << MSR_ME) |
        (cpu_single_env->msr[MSR_FE0] << MSR_FE0) |
        (cpu_single_env->msr[MSR_SE] << MSR_SE) |
        (cpu_single_env->msr[MSR_BE] << MSR_BE) |
        (cpu_single_env->msr[MSR_FE1] << MSR_FE1) |
        (cpu_single_env->msr[MSR_IP] << MSR_IP) |
        (cpu_single_env->msr[MSR_IR] << MSR_IR) |
        (cpu_single_env->msr[MSR_DR] << MSR_DR) |
        (cpu_single_env->msr[MSR_RI] << MSR_RI) |
        (cpu_single_env->msr[MSR_LE] << MSR_LE);
}

static int monitor_get_xer (struct MonitorDef *md)
{
    return (cpu_single_env->xer[XER_SO] << XER_SO) |
        (cpu_single_env->xer[XER_OV] << XER_OV) |
        (cpu_single_env->xer[XER_CA] << XER_CA) |
        (cpu_single_env->xer[XER_BC] << XER_BC);
}
#endif

static MonitorDef monitor_defs[] = {
#ifdef TARGET_I386

#define SEG(name, seg) \
    { name, offsetof(CPUState, segs[seg].selector) },\
    { name ".base", offsetof(CPUState, segs[seg].base) },\
    { name ".limit", offsetof(CPUState, segs[seg].limit) },

    { "eax", offsetof(CPUState, regs[0]) },
    { "ecx", offsetof(CPUState, regs[1]) },
    { "edx", offsetof(CPUState, regs[2]) },
    { "ebx", offsetof(CPUState, regs[3]) },
    { "esp|sp", offsetof(CPUState, regs[4]) },
    { "ebp|fp", offsetof(CPUState, regs[5]) },
    { "esi", offsetof(CPUState, regs[6]) },
    { "esi", offsetof(CPUState, regs[7]) },
    { "eflags", offsetof(CPUState, eflags) },

    { "eip", offsetof(CPUState, eip) },
    SEG("cs", R_CS)
    SEG("ds", R_DS)
    SEG("es", R_ES)
    SEG("fs", R_FS)
    SEG("gs", R_GS)
    { "pc", 0, monitor_get_pc, },

#elif defined(TARGET_PPC)
    { "r0", offsetof(CPUState, gpr[0]) },
    { "r1", offsetof(CPUState, gpr[1]) },
    { "r2", offsetof(CPUState, gpr[2]) },
    { "r3", offsetof(CPUState, gpr[3]) },
    { "r4", offsetof(CPUState, gpr[4]) },
    { "r5", offsetof(CPUState, gpr[5]) },
    { "r6", offsetof(CPUState, gpr[6]) },
    { "r7", offsetof(CPUState, gpr[7]) },
    { "r8", offsetof(CPUState, gpr[8]) },
    { "r9", offsetof(CPUState, gpr[9]) },
    { "r10", offsetof(CPUState, gpr[10]) },
    { "r11", offsetof(CPUState, gpr[11]) },
    { "r12", offsetof(CPUState, gpr[12]) },
    { "r13", offsetof(CPUState, gpr[13]) },
    { "r14", offsetof(CPUState, gpr[14]) },
    { "r15", offsetof(CPUState, gpr[15]) },
    { "r16", offsetof(CPUState, gpr[16]) },
    { "r17", offsetof(CPUState, gpr[17]) },
    { "r18", offsetof(CPUState, gpr[18]) },
    { "r19", offsetof(CPUState, gpr[19]) },
    { "r20", offsetof(CPUState, gpr[20]) },
    { "r21", offsetof(CPUState, gpr[21]) },
    { "r22", offsetof(CPUState, gpr[22]) },
    { "r23", offsetof(CPUState, gpr[23]) },
    { "r24", offsetof(CPUState, gpr[24]) },
    { "r25", offsetof(CPUState, gpr[25]) },
    { "r26", offsetof(CPUState, gpr[26]) },
    { "r27", offsetof(CPUState, gpr[27]) },
    { "r28", offsetof(CPUState, gpr[28]) },
    { "r29", offsetof(CPUState, gpr[29]) },
    { "r30", offsetof(CPUState, gpr[30]) },
    { "r31", offsetof(CPUState, gpr[31]) },

    { "nip|pc", offsetof(CPUState, nip) },

    { "lr", offsetof(CPUState, lr) },
    { "ctr", offsetof(CPUState, ctr) },
    { "decr", offsetof(CPUState, decr) },
    { "ccr", 0, &monitor_get_ccr, },
    { "msr", 0, &monitor_get_msr, },
    { "xer", 0, &monitor_get_xer, },
    { "tbu", offsetof(CPUState, tb[0]) },
    { "tbl", offsetof(CPUState, tb[1]) },
    { "sdr1", offsetof(CPUState, sdr1) },
    { "sr0", offsetof(CPUState, sr[0]) },
    { "sr1", offsetof(CPUState, sr[1]) },
    { "sr2", offsetof(CPUState, sr[2]) },
    { "sr3", offsetof(CPUState, sr[3]) },
    { "sr4", offsetof(CPUState, sr[4]) },
    { "sr5", offsetof(CPUState, sr[5]) },
    { "sr6", offsetof(CPUState, sr[6]) },
    { "sr7", offsetof(CPUState, sr[7]) },
    { "sr8", offsetof(CPUState, sr[8]) },
    { "sr9", offsetof(CPUState, sr[9]) },
    { "sr10", offsetof(CPUState, sr[10]) },
    { "sr11", offsetof(CPUState, sr[11]) },
    { "sr12", offsetof(CPUState, sr[12]) },
    { "sr13", offsetof(CPUState, sr[13]) },
    { "sr14", offsetof(CPUState, sr[14]) },
    { "sr15", offsetof(CPUState, sr[15]) },
    /* Too lazy to put BATs and SPRs ... */

#endif
    { NULL },
};

static void expr_error(const char *fmt) 

{

    term_printf(fmt);
    term_printf("\n");
    longjmp(expr_env, 1);
}

static int get_monitor_def(int *pval, const char *name)
{
    MonitorDef *md;
    for(md = monitor_defs; md->name != NULL; md++) {
        if (compare_cmd(name, md->name)) {
            if (md->get_value) {
                *pval = md->get_value(md);
            } else {
                *pval = *(uint32_t *)((uint8_t *)cpu_single_env + md->offset);
            }
            return 0;
        }
    }
    return -1;
}

static void next(void)
{
    if (pch != '\0') {
        pch++;
        while (isspace(*pch))
            pch++;
    }
}

static int expr_sum(void);

static int expr_unary(void)
{
    int n;
    char *p;

    switch(*pch) {
    case '+':
        next();
        n = expr_unary();
        break;
    case '-':
        next();
        n = -expr_unary();
        break;
    case '~':
        next();
        n = ~expr_unary();
        break;
    case '(':
        next();
        n = expr_sum();
        if (*pch != ')') {
            expr_error("')' expected");
        }
        next();
        break;
    case '$':
        {
            char buf[128], *q;

            pch++;
            q = buf;
            while ((*pch >= 'a' && *pch <= 'z') ||
                   (*pch >= 'A' && *pch <= 'Z') ||
                   (*pch >= '0' && *pch <= '9') ||

                   *pch == '_' || *pch == '.') {

                if ((q - buf) < sizeof(buf) - 1)
                    *q++ = *pch;
                pch++;
            }
            while (isspace(*pch))
                pch++;
            *q = 0;
            if (get_monitor_def(&n, buf))
                expr_error("unknown register");
        }
        break;
    case '\0':
        expr_error("unexpected end of expression");
        n = 0;
        break;
    default:
        n = strtoul(pch, &p, 0);
        if (pch == p) {
            expr_error("invalid char in expression");
        }
        pch = p;
        while (isspace(*pch))
            pch++;
        break;
    }
    return n;
}


static int expr_prod(void)
{
    int val, val2, op;

    val = expr_unary();
    for(;;) {
        op = *pch;
        if (op != '*' && op != '/' && op != '%')
            break;
        next();
        val2 = expr_unary();
        switch(op) {
        default:
        case '*':
            val *= val2;
            break;
        case '/':
        case '%':
            if (val2 == 0) 
                expr_error("divison by zero");
            if (op == '/')
                val /= val2;
            else
                val %= val2;
            break;
        }
    }
    return val;
}

static int expr_logic(void)
{
    int val, val2, op;

    val = expr_prod();
    for(;;) {
        op = *pch;
        if (op != '&' && op != '|' && op != '^')
            break;
        next();
        val2 = expr_prod();
        switch(op) {
        default:
        case '&':
            val &= val2;
            break;
        case '|':
            val |= val2;
            break;
        case '^':
            val ^= val2;
            break;
        }
    }
    return val;
}

static int expr_sum(void)
{
    int val, val2, op;

    val = expr_logic();
    for(;;) {
        op = *pch;
        if (op != '+' && op != '-')
            break;
        next();
        val2 = expr_logic();
        if (op == '+')
            val += val2;
        else
            val -= val2;
    }
    return val;
}

static int get_expr(int *pval, const char **pp)
{
    pch = *pp;
    if (setjmp(expr_env)) {
        *pp = pch;
        return -1;
    }
    while (isspace(*pch))
        pch++;
    *pval = expr_sum();
    *pp = pch;
    return 0;
}

static int get_str(char *buf, int buf_size, const char **pp)
{
    const char *p;
    char *q;
    int c;

    p = *pp;
    while (isspace(*p))
        p++;
    if (*p == '\0') {
    fail:
        *pp = p;
        return -1;
    }
    q = buf;
    if (*p == '\"') {
        p++;
        while (*p != '\0' && *p != '\"') {
            if (*p == '\\') {
                p++;
                c = *p++;
                switch(c) {
                case 'n':
                    c = '\n';
                    break;
                case 'r':
                    c = '\r';
                    break;
                case '\\':
                case '\'':
                case '\"':
                    break;
                default:
                    qemu_printf("unsupported escape code: '\\%c'\n", c);
                    goto fail;
                }
                if ((q - buf) < buf_size - 1) {
                    *q++ = c;
                }
            } else {
                if ((q - buf) < buf_size - 1) {
                    *q++ = *p;
                }
                p++;
            }
        }
        if (*p != '\"') {
            qemu_printf("untermintated string\n");
            goto fail;
        }
        p++;
    } else {
        while (*p != '\0' && !isspace(*p)) {
            if ((q - buf) < buf_size - 1) {
                *q++ = *p;
            }
            p++;
        }
        *q = '\0';
    }
    *pp = p;
    return 0;
}

static int default_fmt_format = 'x';
static int default_fmt_size = 4;

#define MAX_ARGS 16

static void term_handle_command(const char *cmdline)
{
    const char *p, *pstart, *typestr;
    char *q;
    int c, nb_args, len, i, has_arg;

    term_cmd_t *cmd;

    char cmdname[256];
    char buf[1024];
    void *str_allocated[MAX_ARGS];
    void *args[MAX_ARGS];

#ifdef DEBUG
    term_printf("command='%s'\n", cmdline);
#endif

    /* extract the command name */

    p = cmdline;