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/*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* 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.
*
* Copyright (C) 2025 Ventana Micro Systems Inc.
*
*/
#include "lscpu.h"
#include "strutils.h"
#include "strv.h"
#include "cctype.h"
static int riscv_cmp_func(const void *a, const void *b)
{
return strcmp(*(const char **)a, *(const char **)b);
}
bool is_riscv(struct lscpu_cputype *ct)
{
const char *base_isa[] = {"rv32", "rv64", "rv128"};
size_t i;
for (i = 0; i < ARRAY_SIZE(base_isa); i++) {
if (!c_strncasecmp(ct->isa, base_isa[i], strlen(base_isa[i])))
return true;
}
return false;
}
/*
* Reformat the isa string, but the length stays the same.
*/
void lscpu_format_isa_riscv(struct lscpu_cputype *ct)
{
char **split;
size_t i;
split = ul_strv_split(ct->isa, "_");
/* Sort multi-letter extensions alphabetically */
if (ul_strv_length(split) > 1)
qsort(&split[1], ul_strv_length(split) - 1, sizeof(char *), riscv_cmp_func);
/* Keep Base ISA and single-letter extensions at the start */
strcpy(ct->isa, split[0]);
for (i = 1; i < ul_strv_length(split); i++) {
strcat(ct->isa, " ");
strcat(ct->isa, split[i]);
}
ul_strv_free(split);
}
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