sim/ppc/registers.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, see <http://www.gnu.org/licenses/>.
  17
  18     */
  19
  20
  21 #ifndef _REGISTERS_C_
  22 #define _REGISTERS_C_
  23
  24 #include <ctype.h>
  25
  26 #include "basics.h"
  27 #include "registers.h"
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 INLINE_REGISTERS\
  33 (void)
  34 registers_dump(registers *registers)
  35 {
  36   int i;
  37   int j;
  38   for (i = 0; i < 8; i++) {
  39     printf_filtered("GPR %2d:", i*4);
  40     for (j = 0; j < 4; j++) {
  41       printf_filtered(" 0x%08lx", (long)registers->gpr[i*4 + j]);
  42     }
  43     printf_filtered("\n");
  44   }
  45 }
  46
  47 STATIC_INLINE_REGISTERS\
  48 (sprs)
  49 find_spr(const char name[])
  50 {
  51   sprs spr;
  52   for (spr = 0; spr < nr_of_sprs; spr++)
  53     if (spr_is_valid(spr)
  54         && !strcmp(name, spr_name(spr))
  55         && spr_index(spr) == spr)
  56       return spr;
  57   return nr_of_sprs;
  58 }
  59
  60 STATIC_INLINE_REGISTERS\
  61 (int)
  62 are_digits(const char *digits)
  63 {
  64   while (isdigit(*digits))
  65     digits++;
  66   return *digits == '\0';
  67 }
  68
  69
  70 INLINE_REGISTERS\
  71 (register_descriptions)
  72 register_description(const char reg[])
  73 {
  74   register_descriptions description;
  75
  76   /* try for a general-purpose integer or floating point register */
  77   if (reg[0] == 'r' && are_digits(reg + 1)) {
  78     description.type = reg_gpr;
  79     description.index = atoi(reg+1);
  80     description.size = sizeof(gpreg);
  81   }
  82   else if (reg[0] == 'f' && are_digits(reg + 1)) {
  83     description.type = reg_fpr;
  84     description.index = atoi(reg+1);
  85     description.size = sizeof(fpreg);
  86   }
  87   else if (!strcmp(reg, "pc") || !strcmp(reg, "nia")) {
  88     description.type = reg_pc;
  89     description.index = 0;
  90     description.size = sizeof(unsigned_word);
  91   }
  92   else if (!strcmp(reg, "sp")) {
  93     description.type = reg_gpr;
  94     description.index = 1;
  95     description.size = sizeof(gpreg);
  96   }
  97   else if (!strcmp(reg, "toc")) {
  98     description.type = reg_gpr;
  99     description.index = 2;
 100     description.size = sizeof(gpreg);
 101   }
 102   else if (!strcmp(reg, "cr") || !strcmp(reg, "cnd")) {
 103     description.type = reg_cr;
 104     description.index = 0;
 105     description.size = sizeof(creg); /* FIXME */
 106   }
 107   else if (!strcmp(reg, "msr") || !strcmp(reg, "ps")) {
 108     description.type = reg_msr;
 109     description.index = 0;
 110     description.size = sizeof(msreg);
 111   }
 112   else if (!strcmp(reg, "fpscr")) {
 113     description.type = reg_fpscr;
 114     description.index = 0;
 115     description.size = sizeof(fpscreg);
 116   }
 117   else if (!strncmp(reg, "sr", 2) && are_digits(reg + 2)) {
 118     description.type = reg_sr;
 119     description.index = atoi(reg+2);
 120     description.size = sizeof(sreg);
 121   }
 122   else if (!strcmp(reg, "cnt")) {
 123     description.type = reg_spr;
 124     description.index = spr_ctr;
 125     description.size = sizeof(spreg);
 126   }
 127   else if (!strcmp(reg, "insns")) {
 128     description.type = reg_insns;
 129     description.index = spr_ctr;
 130     description.size = sizeof(unsigned_word);
 131   }
 132   else if (!strcmp(reg, "stalls")) {
 133     description.type = reg_stalls;
 134     description.index = spr_ctr;
 135     description.size = sizeof(unsigned_word);
 136   }
 137   else if (!strcmp(reg, "cycles")) {
 138     description.type = reg_cycles;
 139     description.index = spr_ctr;
 140     description.size = sizeof(unsigned_word);
 141   }
 142 #ifdef WITH_ALTIVEC
 143   else if (reg[0] == 'v' && reg[1] == 'r' && are_digits(reg + 2)) {
 144     description.type = reg_vr;
 145     description.index = atoi(reg+2);
 146     description.size = sizeof(vreg);
 147   }
 148    else if (!strcmp(reg, "vscr")) {
 149     description.type = reg_vscr;
 150     description.index = 0;
 151     description.size = sizeof(vscreg);
 152   }
 153 #endif
 154 #ifdef WITH_E500
 155   else if (reg[0] == 'e' && reg[1] == 'v' && are_digits(reg + 2)) {
 156     description.type = reg_evr;
 157     description.index = atoi(reg+2);
 158     description.size = sizeof(uint64_t);
 159   }
 160   else if (reg[0] == 'r' && reg[1] == 'h' && are_digits(reg + 2)) {
 161     description.type = reg_gprh;
 162     description.index = atoi(reg+2);
 163     description.size = sizeof(gpreg);
 164   }
 165   else if (!strcmp(reg, "acc")) {
 166     description.type = reg_acc;
 167     description.index = 0;
 168     description.size = sizeof(uint64_t);
 169   }
 170 #endif
 171   else {
 172     sprs spr = find_spr(reg);
 173     if (spr != nr_of_sprs) {
 174       description.type = reg_spr;
 175       description.index = spr;
 176       description.size = sizeof(spreg);
 177     }
 178     else {
 179       description.type = reg_invalid;
 180       description.index = 0;
 181       description.size = 0;
 182     }
 183   }
 184   return description;
 185 }
 186
 187 #endif /* _REGISTERS_C_ */