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

gdbstub.c (2464B)

      1/*
      2 * Alpha gdb server stub
      3 *
      4 * Copyright (c) 2003-2005 Fabrice Bellard
      5 * Copyright (c) 2013 SUSE LINUX Products GmbH
      6 *
      7 * This library is free software; you can redistribute it and/or
      8 * modify it under the terms of the GNU Lesser General Public
      9 * License as published by the Free Software Foundation; either
     10 * version 2.1 of the License, or (at your option) any later version.
     11 *
     12 * This library is distributed in the hope that it will be useful,
     13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15 * Lesser General Public License for more details.
     16 *
     17 * You should have received a copy of the GNU Lesser General Public
     18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
     19 */
     20#include "qemu/osdep.h"
     21#include "cpu.h"
     22#include "exec/gdbstub.h"
     23
     24int alpha_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
     25{
     26    AlphaCPU *cpu = ALPHA_CPU(cs);
     27    CPUAlphaState *env = &cpu->env;
     28    uint64_t val;
     29    CPU_DoubleU d;
     30
     31    switch (n) {
     32    case 0 ... 30:
     33        val = cpu_alpha_load_gr(env, n);
     34        break;
     35    case 32 ... 62:
     36        d.d = env->fir[n - 32];
     37        val = d.ll;
     38        break;
     39    case 63:
     40        val = cpu_alpha_load_fpcr(env);
     41        break;
     42    case 64:
     43        val = env->pc;
     44        break;
     45    case 66:
     46        val = env->unique;
     47        break;
     48    case 31:
     49    case 65:
     50        /* 31 really is the zero register; 65 is unassigned in the
     51           gdb protocol, but is still required to occupy 8 bytes. */
     52        val = 0;
     53        break;
     54    default:
     55        return 0;
     56    }
     57    return gdb_get_regl(mem_buf, val);
     58}
     59
     60int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
     61{
     62    AlphaCPU *cpu = ALPHA_CPU(cs);
     63    CPUAlphaState *env = &cpu->env;
     64    target_ulong tmp = ldtul_p(mem_buf);
     65    CPU_DoubleU d;
     66
     67    switch (n) {
     68    case 0 ... 30:
     69        cpu_alpha_store_gr(env, n, tmp);
     70        break;
     71    case 32 ... 62:
     72        d.ll = tmp;
     73        env->fir[n - 32] = d.d;
     74        break;
     75    case 63:
     76        cpu_alpha_store_fpcr(env, tmp);
     77        break;
     78    case 64:
     79        env->pc = tmp;
     80        break;
     81    case 66:
     82        env->unique = tmp;
     83        break;
     84    case 31:
     85    case 65:
     86        /* 31 really is the zero register; 65 is unassigned in the
     87           gdb protocol, but is still required to occupy 8 bytes. */
     88        break;
     89    default:
     90        return 0;
     91    }
     92    return 8;
     93}