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/*
* rpiz - https://github.com/bp0/rpiz
* Copyright (C) 2017 Burt P. <pburt0@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "riscv_data.h"
static struct {
char *name, *meaning;
} tab_ext_meaning[] = {
{ "rv32", "32-bit" },
{ "rv64", "64-bit" },
{ "rv128", "128-bit" },
{ "rv_E", "Base embedded integer instructions (15 registers)" },
{ "rv_I", "Base integer instructions (31 registers)" },
{ "rv_M", "Hardware integer multiply and divide" },
{ "rv_A", "Atomic memory operations" },
{ "rv_C", "Compressed 16-bit instructions" },
{ "rv_F", "Floating-point instructions, single-precision" },
{ "rv_D", "Floating-point instructions, double-precision" },
{ "rv_Q", "Floating-point instructions, quad-precision" },
{ "rv_B", "Bit manipulation instructions" },
{ "rv_V", "Vector operations" },
{ "rv_T", "Transactional memory" },
{ "rv_P", "Packed SIMD instructions" },
{ "rv_L", "Decimal floating-point instructions" },
{ NULL, NULL }
};
const char *riscv_ext_meaning(const char *ext) {
int i = 0;
if (ext)
while(tab_ext_meaning[i].name != NULL) {
if (strcmp(tab_ext_meaning[i].name, ext) == 0)
return tab_ext_meaning[i].meaning;
i++;
}
return NULL;
}
#define FSTR_SIZE 1024
#define ADD_EXT_FLAG(ext) l = strlen(ext); strncpy(pd, ext " ", l + 1); pd += l + 1;
char *riscv_isa_to_flags(const char *isa) {
char *flags = NULL, *ps = (char*)isa, *pd = NULL;
int l = 0;
if (isa) {
flags = malloc(FSTR_SIZE);
if (flags) {
memset(flags, 0, FSTR_SIZE);
pd = flags;
if ( strncmp(ps, "RV32", 4) == 0 ) {
ADD_EXT_FLAG("rv32");
ps += 4;
} else if ( strncmp(ps, "RV64", 4) == 0 ) {
ADD_EXT_FLAG("rv64");
ps += 4;
} else if ( strncmp(ps, "RV128", 5) == 0) {
ADD_EXT_FLAG("rv128");
ps += 5;
}
while (*ps != 0) {
switch(*ps) {
case 'G': /* G = IMAFD */
ADD_EXT_FLAG("rv_I");
ADD_EXT_FLAG("rv_M");
ADD_EXT_FLAG("rv_A");
ADD_EXT_FLAG("rv_F");
ADD_EXT_FLAG("rv_D");
break;
case 'E': ADD_EXT_FLAG("rv_E"); break;
case 'I': ADD_EXT_FLAG("rv_I"); break;
case 'M': ADD_EXT_FLAG("rv_M"); break;
case 'A': ADD_EXT_FLAG("rv_A"); break;
case 'C': ADD_EXT_FLAG("rv_C"); break;
case 'F': ADD_EXT_FLAG("rv_F"); break;
case 'D': ADD_EXT_FLAG("rv_D"); break;
case 'Q': ADD_EXT_FLAG("rv_Q"); break;
case 'B': ADD_EXT_FLAG("rv_B"); break;
case 'V': ADD_EXT_FLAG("rv_V"); break;
default: break;
}
ps++;
}
}
}
return flags;
}
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