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nds32: Support target directive .ict_model.

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This commit is contained in:
Kuan-Lin Chen
2018-02-23 14:25:25 +08:00
parent 9c70c5223b
commit e859f6558c
4 changed files with 70 additions and 1 deletions
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4
bfd/ChangeLog
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@ -1,3 +1,7 @@
2018-02-23 Kuan-Lin Chen <kuanlinchentw@gmail.com>
* elf32-nds32.h: Define mask for ict_model.
2018-02-20 Jason Duerstock <jason.duerstock@gmail.com>
* elfnn-ia64.c (elf_backend_can_gc_sections): Enable.

7
bfd/elf32-nds32.h
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@ -46,6 +46,13 @@ extern "C" {
#define R_NDS32_RELAX_ENTRY_EX9_FLAG (1 << 2)
/* Enable IFC optimization for this section. */
#define R_NDS32_RELAX_ENTRY_IFC_FLAG (1 << 3)
/* Two bits for ICT to comply with files without directive. */
/* ICT small model. */
#define R_NDS32_RELAX_ENTRY_ICT_SMALL (0x2 << 4)
/* ICT large model. */
#define R_NDS32_RELAX_ENTRY_ICT_LARGE (0x3 << 4)
/* Mask for get ict bits. */
#define R_NDS32_RELAX_ENTRY_ICT_MASK (0x3 << 4)
/* Relocation flags for R_NDS32_INSN16. */

7
gas/ChangeLog
View File

@ -1,3 +1,10 @@
2018-02-23 Kuan-Lin Chen <kuanlinchentw@gmail.com>
* config/tc-nds32.c (ict_model): New function. Hook new
directive .ict_model.
(nds32_insert_relax_entry): Tag the bits of entry relocation
for .ict_model.
2018-02-22 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-i386.c (_i386_insn): Add rex_encoding.

53
gas/config/tc-nds32.c
View File

@ -102,6 +102,13 @@ static int in_omit_fp = 0;
extern struct nds32_keyword keyword_gpr[];
/* Tag there is relax relocation having to link. */
static bfd_boolean relaxing = FALSE;
/* ICT model. */
enum ict_option {
ICT_NONE = 0,
ICT_SMALL,
ICT_LARGE
};
static enum ict_option ict_flag = ICT_NONE;
static struct hash_control *nds32_relax_info_hash;
static relax_info_t relax_table[] =
@ -3833,6 +3840,45 @@ nds32_flag (int ignore ATTRIBUTE_UNUSED)
*input_line_pointer = saved_char;
ignore_rest_of_line ();
}
static void
ict_model (int ignore ATTRIBUTE_UNUSED)
{
char *name;
char saved_char;
int i;
const char *possible_flags[] = { "small", "large" };
/* Skip whitespaces. */
name = input_line_pointer;
while (*input_line_pointer && !ISSPACE (*input_line_pointer))
input_line_pointer++;
saved_char = *input_line_pointer;
*input_line_pointer = 0;
for (i = 0; i < (int) ARRAY_SIZE (possible_flags); i++)
{
if (strcmp (name, possible_flags[i]) == 0)
{
switch (i)
{
case 0:
/* flag: verbatim */
ict_flag = ICT_SMALL;
break;
case 1:
ict_flag = ICT_LARGE;
break;
default:
break;
}
/* Already found the flag, no need to continue next loop. */
break;
}
}
*input_line_pointer = saved_char;
ignore_rest_of_line ();
}
static void
nds32_n12hc (int ignore ATTRIBUTE_UNUSED)
@ -3901,6 +3947,7 @@ const pseudo_typeS md_pseudo_table[] =
{"innermost_loop_begin", nds32_loop_begin, 1},
{"innermost_loop_end", nds32_loop_begin, 0},
{"relax_hint", nds32_relax_hint, 0},
{"ict_model", ict_model, 0},
{NULL, NULL, 0}
};
@ -6209,7 +6256,7 @@ nds32_insert_relax_entry (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
if (!fixp->fx_done)
break;
if (!fixp && !enable_relax_ex9 && !verbatim)
if (!fixp && !enable_relax_ex9 && !verbatim && ict_flag == ICT_NONE)
return;
subseg_change (sec, 0);
@ -6232,6 +6279,10 @@ nds32_insert_relax_entry (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
exp.X_add_number |= R_NDS32_RELAX_ENTRY_IFC_FLAG;
if (verbatim)
exp.X_add_number |= R_NDS32_RELAX_ENTRY_VERBATIM_FLAG;
if (ict_flag == ICT_SMALL)
exp.X_add_number |= R_NDS32_RELAX_ENTRY_ICT_SMALL;
else if (ict_flag == ICT_LARGE)
exp.X_add_number |= R_NDS32_RELAX_ENTRY_ICT_LARGE;
}
if (optimize)
exp.X_add_number |= R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG;