mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-25 11:04:18 +08:00
a2c5833233
The result of running etc/update-copyright.py --this-year, fixing all the files whose mode is changed by the script, plus a build with --enable-maintainer-mode --enable-cgen-maint=yes, then checking out */po/*.pot which we don't update frequently. The copy of cgen was with commit d1dd5fcc38ead reverted as that commit breaks building of bfp opcodes files.
474 lines
9.8 KiB
C
474 lines
9.8 KiB
C
/* LoongArch opcode support.
|
|
Copyright (C) 2021-2022 Free Software Foundation, Inc.
|
|
Contributed by Loongson Ltd.
|
|
|
|
This file is part of the GNU opcodes library.
|
|
|
|
This library 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 3, or (at your option)
|
|
any later version.
|
|
|
|
It 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; see the file COPYING3. If not,
|
|
see <http://www.gnu.org/licenses/>. */
|
|
#include "sysdep.h"
|
|
#include "opcode/loongarch.h"
|
|
|
|
int
|
|
is_unsigned (const char *c_str)
|
|
{
|
|
if (c_str[0] == '0' && (c_str[1] == 'x' || c_str[1] == 'X'))
|
|
{
|
|
c_str += 2;
|
|
while (('a' <= *c_str && *c_str <= 'f')
|
|
|| ('A' <= *c_str && *c_str <= 'F')
|
|
|| ('0' <= *c_str && *c_str <= '9'))
|
|
c_str++;
|
|
}
|
|
else if (*c_str == '\0')
|
|
return 0;
|
|
else
|
|
while ('0' <= *c_str && *c_str <= '9')
|
|
c_str++;
|
|
return *c_str == '\0';
|
|
}
|
|
|
|
int
|
|
is_signed (const char *c_str)
|
|
{
|
|
return *c_str == '-' ? is_unsigned (c_str + 1) : is_unsigned (c_str);
|
|
}
|
|
|
|
int
|
|
loongarch_get_bit_field_width (const char *bit_field, char **end)
|
|
{
|
|
int width = 0;
|
|
char has_specify = 0, *bit_field_1 = (char *) bit_field;
|
|
if (bit_field_1 && *bit_field_1 != '\0')
|
|
while (1)
|
|
{
|
|
strtol (bit_field_1, &bit_field_1, 10);
|
|
|
|
if (*bit_field_1 != ':')
|
|
break;
|
|
bit_field_1++;
|
|
|
|
width += strtol (bit_field_1, &bit_field_1, 10);
|
|
has_specify = 1;
|
|
|
|
if (*bit_field_1 != '|')
|
|
break;
|
|
bit_field_1++;
|
|
}
|
|
if (end)
|
|
*end = bit_field_1;
|
|
return has_specify ? width : -1;
|
|
}
|
|
|
|
int32_t
|
|
loongarch_decode_imm (const char *bit_field, insn_t insn, int si)
|
|
{
|
|
int32_t ret = 0;
|
|
uint32_t t;
|
|
int len = 0, width, b_start;
|
|
char *bit_field_1 = (char *) bit_field;
|
|
while (1)
|
|
{
|
|
b_start = strtol (bit_field_1, &bit_field_1, 10);
|
|
if (*bit_field_1 != ':')
|
|
break;
|
|
width = strtol (bit_field_1 + 1, &bit_field_1, 10);
|
|
len += width;
|
|
|
|
t = insn;
|
|
t <<= sizeof (t) * 8 - width - b_start;
|
|
t >>= sizeof (t) * 8 - width;
|
|
ret <<= width;
|
|
ret |= t;
|
|
|
|
if (*bit_field_1 != '|')
|
|
break;
|
|
bit_field_1++;
|
|
}
|
|
|
|
if (*bit_field_1 == '<' && *(++bit_field_1) == '<')
|
|
{
|
|
width = atoi (bit_field_1 + 1);
|
|
ret <<= width;
|
|
len += width;
|
|
}
|
|
else if (*bit_field_1 == '+')
|
|
ret += atoi (bit_field_1 + 1);
|
|
|
|
if (si)
|
|
{
|
|
ret <<= sizeof (ret) * 8 - len;
|
|
ret >>= sizeof (ret) * 8 - len;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static insn_t
|
|
loongarch_encode_imm (const char *bit_field, int32_t imm)
|
|
{
|
|
char *bit_field_1 = (char *) bit_field;
|
|
char *t = bit_field_1;
|
|
int width, b_start;
|
|
insn_t ret = 0;
|
|
uint32_t i;
|
|
uint32_t uimm = (uint32_t)imm;
|
|
|
|
width = loongarch_get_bit_field_width (t, &t);
|
|
if (width == -1)
|
|
return ret;
|
|
|
|
if (*t == '<' && *(++t) == '<')
|
|
width += atoi (t + 1);
|
|
else if (*t == '+')
|
|
uimm -= atoi (t + 1);
|
|
|
|
uimm <<= sizeof (uimm) * 8 - width;
|
|
while (1)
|
|
{
|
|
b_start = strtol (bit_field_1, &bit_field_1, 10);
|
|
if (*bit_field_1 != ':')
|
|
break;
|
|
width = strtol (bit_field_1 + 1, &bit_field_1, 10);
|
|
i = uimm;
|
|
i >>= sizeof (i) * 8 - width;
|
|
i <<= b_start;
|
|
ret |= i;
|
|
uimm <<= width;
|
|
|
|
if (*bit_field_1 != '|')
|
|
break;
|
|
bit_field_1++;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Parse such FORMAT
|
|
""
|
|
"u"
|
|
"v0:5,r5:5,s10:10<<2"
|
|
"r0:5,r5:5,r10:5,u15:2+1"
|
|
"r,r,u0:5+32,u0:5+1"
|
|
*/
|
|
static int
|
|
loongarch_parse_format (const char *format, char *esc1s, char *esc2s,
|
|
const char **bit_fields)
|
|
{
|
|
size_t arg_num = 0;
|
|
|
|
if (*format == '\0')
|
|
goto end;
|
|
|
|
while (1)
|
|
{
|
|
/* esc1 esc2
|
|
for "[a-zA-Z][a-zA-Z]?" */
|
|
if (('a' <= *format && *format <= 'z')
|
|
|| ('A' <= *format && *format <= 'Z'))
|
|
{
|
|
*esc1s++ = *format++;
|
|
if (('a' <= *format && *format <= 'z')
|
|
|| ('A' <= *format && *format <= 'Z'))
|
|
*esc2s++ = *format++;
|
|
else
|
|
*esc2s++ = '\0';
|
|
}
|
|
else
|
|
return -1;
|
|
|
|
arg_num++;
|
|
if (MAX_ARG_NUM_PLUS_2 - 2 < arg_num)
|
|
/* Need larger MAX_ARG_NUM_PLUS_2. */
|
|
return -1;
|
|
|
|
*bit_fields++ = format;
|
|
|
|
if ('0' <= *format && *format <= '9')
|
|
{
|
|
/* For "[0-9]+:[0-9]+(\|[0-9]+:[0-9]+)*". */
|
|
while (1)
|
|
{
|
|
while ('0' <= *format && *format <= '9')
|
|
format++;
|
|
|
|
if (*format != ':')
|
|
return -1;
|
|
format++;
|
|
|
|
if (!('0' <= *format && *format <= '9'))
|
|
return -1;
|
|
while ('0' <= *format && *format <= '9')
|
|
format++;
|
|
|
|
if (*format != '|')
|
|
break;
|
|
format++;
|
|
}
|
|
|
|
/* For "((\+|<<)[1-9][0-9]*)?". */
|
|
do
|
|
{
|
|
if (*format == '+')
|
|
format++;
|
|
else if (format[0] == '<' && format[1] == '<')
|
|
format += 2;
|
|
else
|
|
break;
|
|
|
|
if (!('1' <= *format && *format <= '9'))
|
|
return -1;
|
|
while ('0' <= *format && *format <= '9')
|
|
format++;
|
|
}
|
|
while (0);
|
|
}
|
|
|
|
if (*format == ',')
|
|
format++;
|
|
else if (*format == '\0')
|
|
break;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
end:
|
|
*esc1s = '\0';
|
|
return 0;
|
|
}
|
|
|
|
size_t
|
|
loongarch_split_args_by_comma (char *args, const char *arg_strs[])
|
|
{
|
|
size_t num = 0;
|
|
|
|
if (*args)
|
|
arg_strs[num++] = args;
|
|
for (; *args; args++)
|
|
if (*args == ',')
|
|
{
|
|
if (MAX_ARG_NUM_PLUS_2 - 1 == num)
|
|
break;
|
|
else
|
|
*args = '\0', arg_strs[num++] = args + 1;
|
|
}
|
|
arg_strs[num] = NULL;
|
|
return num;
|
|
}
|
|
|
|
char *
|
|
loongarch_cat_splited_strs (const char *arg_strs[])
|
|
{
|
|
char *ret;
|
|
size_t n, l;
|
|
|
|
for (l = 0, n = 0; arg_strs[n]; n++)
|
|
l += strlen (arg_strs[n]);
|
|
ret = malloc (l + n + 1);
|
|
if (!ret)
|
|
return ret;
|
|
|
|
ret[0] = '\0';
|
|
if (0 < n)
|
|
strcat (ret, arg_strs[0]);
|
|
for (l = 1; l < n; l++)
|
|
strcat (ret, ","), strcat (ret, arg_strs[l]);
|
|
return ret;
|
|
}
|
|
|
|
insn_t
|
|
loongarch_foreach_args (const char *format, const char *arg_strs[],
|
|
int32_t (*helper) (char esc1, char esc2,
|
|
const char *bit_field,
|
|
const char *arg, void *context),
|
|
void *context)
|
|
{
|
|
char esc1s[MAX_ARG_NUM_PLUS_2 - 1], esc2s[MAX_ARG_NUM_PLUS_2 - 1];
|
|
const char *bit_fields[MAX_ARG_NUM_PLUS_2 - 1];
|
|
size_t i;
|
|
insn_t ret = 0;
|
|
int ok;
|
|
|
|
ok = loongarch_parse_format (format, esc1s, esc2s, bit_fields) == 0;
|
|
|
|
/* Make sure the num of actual args is equal to the num of escape. */
|
|
for (i = 0; esc1s[i] && arg_strs[i]; i++)
|
|
;
|
|
ok = ok && !esc1s[i] && !arg_strs[i];
|
|
|
|
if (ok && helper)
|
|
{
|
|
for (i = 0; arg_strs[i]; i++)
|
|
ret |= loongarch_encode_imm (bit_fields[i],
|
|
helper (esc1s[i], esc2s[i],
|
|
bit_fields[i], arg_strs[i],
|
|
context));
|
|
ret |= helper ('\0', '\0', NULL, NULL, context);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
loongarch_check_format (const char *format)
|
|
{
|
|
char esc1s[MAX_ARG_NUM_PLUS_2 - 1], esc2s[MAX_ARG_NUM_PLUS_2 - 1];
|
|
const char *bit_fields[MAX_ARG_NUM_PLUS_2 - 1];
|
|
|
|
if (!format)
|
|
return -1;
|
|
|
|
return loongarch_parse_format (format, esc1s, esc2s, bit_fields);
|
|
}
|
|
|
|
int
|
|
loongarch_check_macro (const char *format, const char *macro)
|
|
{
|
|
int num_of_args;
|
|
char esc1s[MAX_ARG_NUM_PLUS_2 - 1], esc2s[MAX_ARG_NUM_PLUS_2 - 1];
|
|
const char *bit_fields[MAX_ARG_NUM_PLUS_2 - 1];
|
|
|
|
if (!format || !macro
|
|
|| loongarch_parse_format (format, esc1s, esc2s, bit_fields) != 0)
|
|
return -1;
|
|
|
|
for (num_of_args = 0; esc1s[num_of_args]; num_of_args++)
|
|
;
|
|
|
|
for (; macro[0]; macro++)
|
|
if (macro[0] == '%')
|
|
{
|
|
macro++;
|
|
if ('1' <= macro[0] && macro[0] <= '9')
|
|
{
|
|
if (num_of_args < macro[0] - '0')
|
|
/* Out of args num. */
|
|
return -1;
|
|
}
|
|
else if (macro[0] == 'f')
|
|
;
|
|
else if (macro[0] == '%')
|
|
;
|
|
else
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const char *
|
|
I (char esc_ch1 ATTRIBUTE_UNUSED, char esc_ch2 ATTRIBUTE_UNUSED,
|
|
const char *c_str)
|
|
{
|
|
return c_str;
|
|
}
|
|
|
|
char *
|
|
loongarch_expand_macro_with_format_map (
|
|
const char *format, const char *macro, const char *const arg_strs[],
|
|
const char *(*map) (char esc1, char esc2, const char *arg),
|
|
char *(*helper) (const char *const arg_strs[], void *context), void *context)
|
|
{
|
|
char esc1s[MAX_ARG_NUM_PLUS_2 - 1], esc2s[MAX_ARG_NUM_PLUS_2 - 1];
|
|
const char *bit_fields[MAX_ARG_NUM_PLUS_2 - 1];
|
|
const char *src;
|
|
char *dest;
|
|
char buffer[8192];
|
|
|
|
if (format)
|
|
loongarch_parse_format (format, esc1s, esc2s, bit_fields);
|
|
|
|
src = macro;
|
|
dest = buffer;
|
|
|
|
while (*src)
|
|
if (*src == '%')
|
|
{
|
|
src++;
|
|
if ('1' <= *src && *src <= '9')
|
|
{
|
|
size_t i = *src - '1';
|
|
const char *t = map (esc1s[i], esc2s[i], arg_strs[i]);
|
|
while (*t)
|
|
*dest++ = *t++;
|
|
}
|
|
else if (*src == '%')
|
|
*dest++ = '%';
|
|
else if (*src == 'f' && helper)
|
|
{
|
|
char *b, *t;
|
|
t = b = (*helper) (arg_strs, context);
|
|
if (b)
|
|
{
|
|
while (*t)
|
|
*dest++ = *t++;
|
|
free (b);
|
|
}
|
|
}
|
|
src++;
|
|
}
|
|
else
|
|
*dest++ = *src++;
|
|
|
|
*dest = '\0';
|
|
return strdup (buffer);
|
|
}
|
|
|
|
char *
|
|
loongarch_expand_macro (const char *macro, const char *const arg_strs[],
|
|
char *(*helper) (const char *const arg_strs[],
|
|
void *context),
|
|
void *context)
|
|
{
|
|
return loongarch_expand_macro_with_format_map (NULL, macro, arg_strs, I,
|
|
helper, context);
|
|
}
|
|
|
|
size_t
|
|
loongarch_bits_imm_needed (int64_t imm, int si)
|
|
{
|
|
size_t ret;
|
|
if (si)
|
|
{
|
|
if (imm < 0)
|
|
{
|
|
uint64_t uimm = (uint64_t) imm;
|
|
uint64_t uimax = UINT64_C (1) << 63;
|
|
for (ret = 0; (uimm & uimax) != 0; uimm <<= 1, ret++)
|
|
;
|
|
ret = 64 - ret + 1;
|
|
}
|
|
else
|
|
ret = loongarch_bits_imm_needed (imm, 0) + 1;
|
|
}
|
|
else
|
|
{
|
|
uint64_t t = imm;
|
|
for (ret = 0; t; t >>= 1, ret++)
|
|
;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
loongarch_eliminate_adjacent_repeat_char (char *dest, char c)
|
|
{
|
|
if (c == '\0')
|
|
return;
|
|
char *src = dest;
|
|
while (*dest)
|
|
{
|
|
while (src[0] == c && src[0] == src[1])
|
|
src++;
|
|
*dest++ = *src++;
|
|
}
|
|
}
|