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CSKY: Support option -mfloat-abi.

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The option corresponds to GCC to control the float calling conversion,
and the value will be stored in .csky.attributes section.

Co-Authored-By: Lifang Xia <lifang_xia@c-sky.com>

gas/
	* config/tc-csky.c (float_abi): New.
	(md_longopts): Add mfloat-abi.
	(struct sky_option_value_table): New.
	(csky_float_abis): New, the possible values for -mfloat-abi.
	(parse_float_abi): New funtion.
	(md_show_usage): Show help information for -mfloat-abi.
	(set_csky_attribute): Store float-abi value.
This commit is contained in:
Cooper Qu
2020-09-07 17:25:02 +08:00
committed by Lifang Xia
parent 1feede9b38
commit a2061b9f29
2 changed files with 67 additions and 0 deletions
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10
gas/ChangeLog
View File

@ -1,3 +1,13 @@
2020-09-07 Cooper Qu <cooper.qu@linux.alibaba.com>
* config/tc-csky.c (float_abi): New.
(md_longopts): Add mfloat-abi.
(struct sky_option_value_table): New.
(csky_float_abis): New, the possible values for -mfloat-abi.
(parse_float_abi): New funtion.
(md_show_usage): Show help information for -mfloat-abi.
(set_csky_attribute): Store float-abi value.
2020-09-07 Cooper Qu <cooper.qu@linux.alibaba.com>
* config/tc-csky.c (float_work_fpuv3_fmovi): New function,

57
gas/config/tc-csky.c
View File

@ -463,6 +463,7 @@ static int do_func_dump = 0; /* dump literals after every function. */
static int do_br_dump = 1; /* work for -mabr/-mno-abr, control the literals dump. */
static int do_intr_stack = -1; /* control interrupt stack module, 801&802&803
default on, 807&810, default off. */
static int float_abi = 0;
#ifdef INCLUDE_BRANCH_STUB
static int do_use_branchstub = -1;
@ -750,6 +751,8 @@ struct option md_longopts[] = {
{"march", required_argument, NULL, OPTION_MARCH},
#define OPTION_MCPU (OPTION_MD_BASE + 1)
{"mcpu", required_argument, NULL, OPTION_MCPU},
#define OPTION_FLOAT_ABI (OPTION_MD_BASE + 2)
{"mfloat-abi", required_argument, NULL, OPTION_FLOAT_ABI},
/* Remaining options just set boolean flags. */
{"EL", no_argument, &target_big_endian, 0},
@ -960,6 +963,35 @@ parse_arch (const char *str)
as_bad (_("unknown architecture `%s'"), str);
}
struct csky_option_value_table
{
const char *name;
long value;
};
static const struct csky_option_value_table csky_float_abis[] =
{
{"hard", VAL_CSKY_FPU_ABI_HARD},
{"softfp", VAL_CSKY_FPU_ABI_SOFTFP},
{"soft", VAL_CSKY_FPU_ABI_SOFT},
{NULL, 0}
};
static bfd_boolean
parse_float_abi (const char *str)
{
const struct csky_option_value_table * opt;
for (opt = csky_float_abis; opt->name != NULL; opt++)
if (strcasecmp (opt->name, str) == 0)
{
float_abi = opt->value;
return TRUE;
}
as_bad (_("unknown floating point abi `%s'\n"), str);
return FALSE;
}
#ifdef OBJ_ELF
/* Implement the TARGET_FORMAT macro. */
@ -1141,6 +1173,25 @@ md_show_usage (FILE *fp)
}
fprintf (fp, "\n");
fprintf (fp, _("\
-mfloat-abi=ABI select float ABI:"));
for (i = 0, n = margin; csky_float_abis[i].name != NULL; i++)
{
int l = strlen (csky_float_abis[i].name);
if (n + l >= margin)
{
fprintf (fp, "\n\t\t\t\t");
n = l;
}
else
{
fprintf (fp, " ");
n += l + 1;
}
fprintf (fp, "%s", csky_float_abis[i].name);
}
fprintf (fp, "\n");
fprintf (fp, _("\
-EL -mlittle-endian generate little-endian output\n"));
fprintf (fp, _("\
@ -1271,6 +1322,9 @@ static void set_csky_attribute (void)
bfd_elf_add_obj_attr_string (stdoutput, OBJ_ATTR_PROC,
Tag_CSKY_FPU_NUMBER_MODULE,
"IEEE 754");
bfd_elf_add_obj_attr_int (stdoutput, OBJ_ATTR_PROC,
Tag_CSKY_FPU_ABI,
float_abi);
}
}
@ -4506,6 +4560,9 @@ md_parse_option (int c, const char *arg)
case OPTION_MCPU:
parse_cpu (arg);
break;
case OPTION_FLOAT_ABI:
parse_float_abi (arg);
break;
default:
return 0;
}