cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

hexagon.c (2097B)

      1/*
      2 *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
      3 *
      4 *  This program is free software; you can redistribute it and/or modify
      5 *  it under the terms of the GNU General Public License as published by
      6 *  the Free Software Foundation; either version 2 of the License, or
      7 *  (at your option) any later version.
      8 *
      9 *  This program is distributed in the hope that it will be useful,
     10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12 *  GNU General Public License for more details.
     13 *
     14 *  You should have received a copy of the GNU General Public License
     15 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
     16 */
     17
     18/*
     19 * QEMU Hexagon Disassembler
     20 */
     21
     22#include "qemu/osdep.h"
     23#include "disas/dis-asm.h"
     24#include "target/hexagon/cpu_bits.h"
     25
     26/*
     27 * We will disassemble a packet with up to 4 instructions, so we need
     28 * a hefty size buffer.
     29 */
     30#define PACKET_BUFFER_LEN                   1028
     31
     32int print_insn_hexagon(bfd_vma memaddr, struct disassemble_info *info)
     33{
     34    uint32_t words[PACKET_WORDS_MAX];
     35    bool found_end = false;
     36    GString *buf;
     37    int i, len;
     38
     39    for (i = 0; i < PACKET_WORDS_MAX && !found_end; i++) {
     40        int status = (*info->read_memory_func)(memaddr + i * sizeof(uint32_t),
     41                                               (bfd_byte *)&words[i],
     42                                               sizeof(uint32_t), info);
     43        if (status) {
     44            if (i > 0) {
     45                break;
     46            }
     47            (*info->memory_error_func)(status, memaddr, info);
     48            return status;
     49        }
     50        if (is_packet_end(words[i])) {
     51            found_end = true;
     52        }
     53    }
     54
     55    if (!found_end) {
     56        (*info->fprintf_func)(info->stream, "<invalid>");
     57        return PACKET_WORDS_MAX * sizeof(uint32_t);
     58    }
     59
     60    buf = g_string_sized_new(PACKET_BUFFER_LEN);
     61    len = disassemble_hexagon(words, i, memaddr, buf);
     62    (*info->fprintf_func)(info->stream, "%s", buf->str);
     63    g_string_free(buf, true);
     64
     65    return len;
     66}