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LoongArch: Enable all instructions by default on LA32 like LA64

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Glibc checks LSX/LASX support when configure.
Kernel has float instructions but with -msoft-float option.
This commit is contained in:
mengqinggang
2025-09-07 15:24:55 +08:00
parent a820ec7a3f
commit db614f37ca
1 changed files with 44 additions and 43 deletions
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87
gas/config/tc-loongarch.c
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@@ -27,6 +27,7 @@
#include "opcode/loongarch.h"
#include "obj-elf.h"
#include "bfd/elfxx-loongarch.h"
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
@@ -181,34 +182,24 @@ int
md_parse_option (int c, const char *arg)
{
int ret = 1;
char lp64[256] = "";
char ilp32[256] = "";
lp64['s'] = lp64['S'] = EF_LOONGARCH_ABI_SOFT_FLOAT;
lp64['f'] = lp64['F'] = EF_LOONGARCH_ABI_SINGLE_FLOAT;
lp64['d'] = lp64['D'] = EF_LOONGARCH_ABI_DOUBLE_FLOAT;
ilp32['s'] = ilp32['S'] = EF_LOONGARCH_ABI_SOFT_FLOAT;
ilp32['f'] = ilp32['F'] = EF_LOONGARCH_ABI_SINGLE_FLOAT;
ilp32['d'] = ilp32['D'] = EF_LOONGARCH_ABI_DOUBLE_FLOAT;
char fabi[256] = "";
fabi['s'] = fabi['S'] = EF_LOONGARCH_ABI_SOFT_FLOAT;
fabi['f'] = fabi['F'] = EF_LOONGARCH_ABI_SINGLE_FLOAT;
fabi['d'] = fabi['D'] = EF_LOONGARCH_ABI_DOUBLE_FLOAT;
switch (c)
{
case OPTION_ABI:
if (strncasecmp (arg, "lp64", 4) == 0 && lp64[arg[4] & 0xff] != 0)
if (strncasecmp (arg, "lp64", 4) == 0 && fabi[arg[4] & 0xff] != 0)
{
LARCH_opts.ase_ilp32 = 1;
LARCH_opts.ase_lp64 = 1;
LARCH_opts.ase_lsx = 1;
LARCH_opts.ase_lasx = 1;
LARCH_opts.ase_lvz = 1;
LARCH_opts.ase_lbt = 1;
LARCH_opts.ase_abi = lp64[arg[4] & 0xff];
LARCH_opts.ase_abi = fabi[arg[4] & 0xff];
}
else if (strncasecmp (arg, "ilp32", 5) == 0 && ilp32[arg[5] & 0xff] != 0)
else if (strncasecmp (arg, "ilp32", 5) == 0 && fabi[arg[5] & 0xff] != 0)
{
LARCH_opts.ase_abi = ilp32[arg[5] & 0xff];
LARCH_opts.ase_ilp32 = 1;
LARCH_opts.ase_abi = fabi[arg[5] & 0xff];
}
else
ret = 0;
@@ -284,43 +275,53 @@ static struct htab *cfi_f_htab = NULL;
void
loongarch_after_parse_args ()
{
/* Set default ABI/ISA LP64D. */
/* If no -mabi specified, set ABI by default_arch. */
if (!LARCH_opts.ase_ilp32)
{
if (strcmp (default_arch, "loongarch64") == 0)
{
LARCH_opts.ase_abi = EF_LOONGARCH_ABI_DOUBLE_FLOAT;
LARCH_opts.ase_ilp32 = 1;
LARCH_opts.ase_lp64 = 1;
LARCH_opts.ase_lsx = 1;
LARCH_opts.ase_lasx = 1;
LARCH_opts.ase_lvz = 1;
LARCH_opts.ase_lbt = 1;
}
else if (strcmp (default_arch, "loongarch32") == 0)
{
LARCH_opts.ase_abi = EF_LOONGARCH_ABI_DOUBLE_FLOAT;
LARCH_opts.ase_ilp32 = 1;
}
else
as_bad ("unknown default architecture `%s'", default_arch);
}
LARCH_opts.ase_abi |= EF_LOONGARCH_OBJABI_V1;
/* Set default ISA double-float. */
if (!LARCH_opts.ase_nf
&& !LARCH_opts.ase_sf
&& !LARCH_opts.ase_df)
/* Enable all instructions defaultly.
Glibc checks LSX/LASX support when configure.
Kernel has float instructions but with -msoft-float option.
TODO: Enable la32 or la64 instructions by march option.
TODO: Instruction enable and macro expansion may need to be controlled
by different variables. ase_ilp32 and ase_lp64 only use for instruction
enable and can both be 1. The variables used for macro expand can't both
be 1. */
LARCH_opts.ase_sf = 1;
LARCH_opts.ase_df = 1;
LARCH_opts.ase_lsx = 1;
LARCH_opts.ase_lasx = 1;
LARCH_opts.ase_lvz = 1;
LARCH_opts.ase_lbt = 1;
/* If no -mabi specified, set e_flags base ABI by target os. */
if (!LARCH_opts.ase_abi)
{
LARCH_opts.ase_sf = 1;
LARCH_opts.ase_df = 1;
if (strcmp (TARGET_OS, "linux-gnusf") == 0)
LARCH_opts.ase_abi = EF_LOONGARCH_ABI_SOFT_FLOAT;
else if (strcmp (TARGET_OS, "linux-gnuf32") == 0)
LARCH_opts.ase_abi = EF_LOONGARCH_ABI_SINGLE_FLOAT;
else if (strcmp (TARGET_OS, "linux-gnu") == 0)
LARCH_opts.ase_abi = EF_LOONGARCH_ABI_DOUBLE_FLOAT;
else
as_fatal (_("unsupport TARGET_OS %s"), TARGET_OS);
}
size_t i;
assert(LARCH_opts.ase_ilp32);
/* Set eflags ABI version to v1 (ELF object file ABI 2.0). */
LARCH_opts.ase_abi |= EF_LOONGARCH_OBJABI_V1;
/* Init ilp32/lp64 registers names. */
size_t i;
if (!r_htab)
r_htab = str_htab_create ();
if (!r_deprecated_htab)
@@ -390,12 +391,12 @@ loongarch_after_parse_args ()
str_hash_insert_int (f_deprecated_htab, loongarch_f_alias_deprecated[i],
i, 0);
/* The .cfi directive supports register aliases without the "$" prefix. */
for (i = 0; i < ARRAY_SIZE (loongarch_f_cfi_name); i++)
{
str_hash_insert_int (cfi_f_htab, loongarch_f_cfi_name[i], i, 0);
str_hash_insert_int (cfi_f_htab, loongarch_f_cfi_name_alias[i], i, 0);
}
/* The .cfi directive supports register aliases without the "$" prefix. */
for (i = 0; i < ARRAY_SIZE (loongarch_f_cfi_name); i++)
{
str_hash_insert_int (cfi_f_htab, loongarch_f_cfi_name[i], i, 0);
str_hash_insert_int (cfi_f_htab, loongarch_f_cfi_name_alias[i], i, 0);
}
if (!fc_htab)
fc_htab = str_htab_create ();