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/*
 * 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 "qemu/osdep.h"
#include "cpu.h"
#include "monitor/monitor.h"
#include "monitor/hmp-target.h"
#include "hmp.h"

static target_long monitor_get_ccr (const struct MonitorDef *md, int val)
{
    CPUArchState *env = mon_get_cpu_env();
    unsigned int u;
    int i;

    u = 0;
    for (i = 0; i < 8; i++)
        u |= env->crf[i] << (32 - (4 * (i + 1)));

    return u;
}

static target_long monitor_get_decr (const struct MonitorDef *md, int val)
{
    CPUArchState *env = mon_get_cpu_env();
    return cpu_ppc_load_decr(env);
}

static target_long monitor_get_tbu (const struct MonitorDef *md, int val)
{
    CPUArchState *env = mon_get_cpu_env();
    return cpu_ppc_load_tbu(env);
}

static target_long monitor_get_tbl (const struct MonitorDef *md, int val)
{
    CPUArchState *env = mon_get_cpu_env();
    return cpu_ppc_load_tbl(env);
}

void hmp_info_tlb(Monitor *mon, const QDict *qdict)
{
    CPUArchState *env1 = mon_get_cpu_env();

    dump_mmu((FILE*)mon, (fprintf_function)monitor_printf, env1);
}

const MonitorDef monitor_defs[] = {
    { "fpscr", offsetof(CPUPPCState, fpscr) },
    /* Next instruction pointer */
    { "nip|pc", offsetof(CPUPPCState, nip) },
    { "lr", offsetof(CPUPPCState, lr) },
    { "ctr", offsetof(CPUPPCState, ctr) },
    { "decr", 0, &monitor_get_decr, },
    { "ccr|cr", 0, &monitor_get_ccr, },
    /* Machine state register */
    { "xer", offsetof(CPUPPCState, xer) },
    { "msr", offsetof(CPUPPCState, msr) },
    { "tbu", 0, &monitor_get_tbu, },
    { "tbl", 0, &monitor_get_tbl, },
    { NULL },
};

const MonitorDef *target_monitor_defs(void)
{
    return monitor_defs;
}

static int ppc_cpu_get_reg_num(const char *numstr, int maxnum, int *pregnum)
{
    int regnum;
    char *endptr = NULL;

    if (!*numstr) {
        return false;
    }

    regnum = strtoul(numstr, &endptr, 10);
    if (*endptr || (regnum >= maxnum)) {
        return false;
    }
    *pregnum = regnum;

    return true;
}

int target_get_monitor_def(CPUState *cs, const char *name, uint64_t *pval)
{
    int i, regnum;
    PowerPCCPU *cpu = POWERPC_CPU(cs);
    CPUPPCState *env = &cpu->env;

    /* General purpose registers */
    if ((tolower(name[0]) == 'r') &&
        ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->gpr), &regnum)) {
        *pval = env->gpr[regnum];
        return 0;
    }

    /* Floating point registers */
    if ((tolower(name[0]) == 'f') &&
        ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->fpr), &regnum)) {
        *pval = env->fpr[regnum];
        return 0;
    }

    /* Special purpose registers */
    for (i = 0; i < ARRAY_SIZE(env->spr_cb); ++i) {
        ppc_spr_t *spr = &env->spr_cb[i];

        if (spr->name && (strcasecmp(name, spr->name) == 0)) {
            *pval = env->spr[i];
            return 0;
        }
    }

    /* Segment registers */
#if !defined(CONFIG_USER_ONLY)
    if ((strncasecmp(name, "sr", 2) == 0) &&
        ppc_cpu_get_reg_num(name + 2, ARRAY_SIZE(env->sr), &regnum)) {
        *pval = env->sr[regnum];
        return 0;
    }
#endif

    return -EINVAL;
}
39; ... 'F'] = IN_SQ_UCODE3, }, [IN_SQ_UCODE1] = { ['0' ... '9'] = IN_SQ_UCODE2, ['a' ... 'f'] = IN_SQ_UCODE2, ['A' ... 'F'] = IN_SQ_UCODE2, }, [IN_SQ_UCODE0] = { ['0' ... '9'] = IN_SQ_UCODE1, ['a' ... 'f'] = IN_SQ_UCODE1, ['A' ... 'F'] = IN_SQ_UCODE1, }, [IN_SQ_STRING_ESCAPE] = { ['b'] = IN_SQ_STRING, ['f'] = IN_SQ_STRING, ['n'] = IN_SQ_STRING, ['r'] = IN_SQ_STRING, ['t'] = IN_SQ_STRING, ['/'] = IN_SQ_STRING, ['\\'] = IN_SQ_STRING, ['\''] = IN_SQ_STRING, ['\"'] = IN_SQ_STRING, ['u'] = IN_SQ_UCODE0, }, [IN_SQ_STRING] = { [1 ... 0xBF] = IN_SQ_STRING, [0xC2 ... 0xF4] = IN_SQ_STRING, ['\\'] = IN_SQ_STRING_ESCAPE, ['\''] = JSON_STRING, }, /* Zero */ [IN_ZERO] = { TERMINAL(JSON_INTEGER), ['0' ... '9'] = IN_ERROR, ['.'] = IN_MANTISSA, }, /* Float */ [IN_DIGITS] = { TERMINAL(JSON_FLOAT), ['0' ... '9'] = IN_DIGITS, }, [IN_DIGIT] = { ['0' ... '9'] = IN_DIGITS, }, [IN_EXP_E] = { ['-'] = IN_DIGIT, ['+'] = IN_DIGIT, ['0' ... '9'] = IN_DIGITS, }, [IN_MANTISSA_DIGITS] = { TERMINAL(JSON_FLOAT), ['0' ... '9'] = IN_MANTISSA_DIGITS, ['e'] = IN_EXP_E, ['E'] = IN_EXP_E, }, [IN_MANTISSA] = { ['0' ... '9'] = IN_MANTISSA_DIGITS, }, /* Number */ [IN_NONZERO_NUMBER] = { TERMINAL(JSON_INTEGER), ['0' ... '9'] = IN_NONZERO_NUMBER, ['e'] = IN_EXP_E, ['E'] = IN_EXP_E, ['.'] = IN_MANTISSA, }, [IN_NEG_NONZERO_NUMBER] = { ['0'] = IN_ZERO, ['1' ... '9'] = IN_NONZERO_NUMBER, }, /* keywords */ [IN_KEYWORD] = { TERMINAL(JSON_KEYWORD), ['a' ... 'z'] = IN_KEYWORD, }, /* whitespace */ [IN_WHITESPACE] = { TERMINAL(JSON_SKIP), [' '] = IN_WHITESPACE, ['\t'] = IN_WHITESPACE, ['\r'] = IN_WHITESPACE, ['\n'] = IN_WHITESPACE, }, /* escape */ [IN_ESCAPE_LL] = { ['d'] = JSON_ESCAPE, }, [IN_ESCAPE_L] = { ['d'] = JSON_ESCAPE, ['l'] = IN_ESCAPE_LL, }, [IN_ESCAPE_I64] = { ['d'] = JSON_ESCAPE, }, [IN_ESCAPE_I6] = { ['4'] = IN_ESCAPE_I64, }, [IN_ESCAPE_I] = { ['6'] = IN_ESCAPE_I6, }, [IN_ESCAPE] = { ['d'] = JSON_ESCAPE, ['i'] = JSON_ESCAPE, ['p'] = JSON_ESCAPE, ['s'] = JSON_ESCAPE, ['f'] = JSON_ESCAPE, ['l'] = IN_ESCAPE_L, ['I'] = IN_ESCAPE_I, }, /* top level rule */ [IN_START] = { ['"'] = IN_DQ_STRING, ['\''] = IN_SQ_STRING, ['0'] = IN_ZERO, ['1' ... '9'] = IN_NONZERO_NUMBER, ['-'] = IN_NEG_NONZERO_NUMBER, ['{'] = JSON_LCURLY, ['}'] = JSON_RCURLY, ['['] = JSON_LSQUARE, [']'] = JSON_RSQUARE, [','] = JSON_COMMA, [':'] = JSON_COLON, ['a' ... 'z'] = IN_KEYWORD, ['%'] = IN_ESCAPE, [' '] = IN_WHITESPACE, ['\t'] = IN_WHITESPACE, ['\r'] = IN_WHITESPACE, ['\n'] = IN_WHITESPACE, }, }; void json_lexer_init(JSONLexer *lexer, JSONLexerEmitter func) { lexer->emit = func; lexer->state = IN_START; lexer->token = g_string_sized_new(3); lexer->x = lexer->y = 0; } static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) { int char_consumed, new_state; lexer->x++; if (ch == '\n') { lexer->x = 0; lexer->y++; } do { assert(lexer->state <= ARRAY_SIZE(json_lexer)); new_state = json_lexer[lexer->state][(uint8_t)ch]; char_consumed = !TERMINAL_NEEDED_LOOKAHEAD(lexer->state, new_state); if (char_consumed) { g_string_append_c(lexer->token, ch); } switch (new_state) { case JSON_LCURLY: case JSON_RCURLY: case JSON_LSQUARE: case JSON_RSQUARE: case JSON_COLON: case JSON_COMMA: case JSON_ESCAPE: case JSON_INTEGER: case JSON_FLOAT: case JSON_KEYWORD: case JSON_STRING: lexer->emit(lexer, lexer->token, new_state, lexer->x, lexer->y); /* fall through */ case JSON_SKIP: g_string_truncate(lexer->token, 0); new_state = IN_START; break; case IN_ERROR: /* XXX: To avoid having previous bad input leaving the parser in an * unresponsive state where we consume unpredictable amounts of * subsequent "good" input, percolate this error state up to the * tokenizer/parser by forcing a NULL object to be emitted, then * reset state. * * Also note that this handling is required for reliable channel * negotiation between QMP and the guest agent, since chr(0xFF) * is placed at the beginning of certain events to ensure proper * delivery when the channel is in an unknown state. chr(0xFF) is * never a valid ASCII/UTF-8 sequence, so this should reliably * induce an error/flush state. */ lexer->emit(lexer, lexer->token, JSON_ERROR, lexer->x, lexer->y); g_string_truncate(lexer->token, 0); new_state = IN_START; lexer->state = new_state; return 0; default: break; } lexer->state = new_state; } while (!char_consumed && !flush); /* Do not let a single token grow to an arbitrarily large size, * this is a security consideration. */ if (lexer->token->len > MAX_TOKEN_SIZE) { lexer->emit(lexer, lexer->token, lexer->state, lexer->x, lexer->y); g_string_truncate(lexer->token, 0); lexer->state = IN_START; } return 0; } int json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size) { size_t i; for (i = 0; i < size; i++) { int err; err = json_lexer_feed_char(lexer, buffer[i], false); if (err < 0) { return err; } } return 0; } int json_lexer_flush(JSONLexer *lexer) { return lexer->state == IN_START ? 0 : json_lexer_feed_char(lexer, 0, true); } void json_lexer_destroy(JSONLexer *lexer) { g_string_free(lexer->token, true); }