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DIGEST: ldgram.y

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Signed-off-by: Ulf Samuelsson <ulf@emagii.com>
This commit is contained in:
Ulf Samuelsson
2023-03-06 14:31:53 +01:00
committed by Nick Clifton
parent 48b5163a9d
commit d73c01be26
1 changed files with 60 additions and 1 deletions
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61
ld/ldgram.y
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@@ -41,6 +41,7 @@
#include "mri.h" #include "mri.h"
#include "ldctor.h" #include "ldctor.h"
#include "ldlex.h" #include "ldlex.h"
#include "lddigest.h"
#ifndef YYDEBUG #ifndef YYDEBUG
#define YYDEBUG 1 #define YYDEBUG 1
@@ -130,6 +131,9 @@ static int error_index;
%token DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END %token DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END
%token SORT_BY_NAME SORT_BY_ALIGNMENT SORT_NONE %token SORT_BY_NAME SORT_BY_ALIGNMENT SORT_NONE
%token SORT_BY_INIT_PRIORITY %token SORT_BY_INIT_PRIORITY
%token DIGEST POLY POLYI TABLE
%token TIMESTAMP
%token DEBUG ON OFF
%token '{' '}' %token '{' '}'
%token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH %token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH
%token INHIBIT_COMMON_ALLOCATION FORCE_GROUP_ALLOCATION %token INHIBIT_COMMON_ALLOCATION FORCE_GROUP_ALLOCATION
@@ -668,7 +672,7 @@ statement:
{ {
lang_add_data ((int) $1, $3); lang_add_data ((int) $1, $3);
} }
| ASCII '(' mustbe_exp ')' NAME | ASCII '(' mustbe_exp ')' NAME
{ {
/* 'value' is a memory leak, do we care? */ /* 'value' is a memory leak, do we care? */
etree_type *value = $3; etree_type *value = $3;
@@ -685,6 +689,31 @@ statement:
{ {
lang_add_fill ($3); lang_add_fill ($3);
} }
| DIGEST NAME
{ /* CRC_ADDRESS is set in <polynome>, but polynome reserves space, so we use a temporary */
digest_label = lang_get_label($2, &digest_big_endian);
lang_add_assignment (exp_assign (digest_label, exp_nameop (NAME, "."), false));
}
polynome '(' mustbe_exp ',' mustbe_exp ')'
{
if (polynome_valid)
{
lang_add_assignment (exp_assign (CRC_ADDRESS, exp_nameop (NAME, digest_label), false));
lang_add_assignment (exp_assign (CRC_START, $6, false));
lang_add_assignment (exp_assign (CRC_END, $8, false));
}
}
| DIGEST TABLE NAME
{
bool big_endian;
const char *label = lang_get_label($3, &big_endian);
lang_add_assignment (exp_assign (label, exp_nameop (NAME,"."), false));
lang_add_digest_table (big_endian);
}
| TIMESTAMP
{
lang_add_timestamp ();
}
| ASSERT_K | ASSERT_K
{ ldlex_expression (); } { ldlex_expression (); }
'(' exp ',' NAME ')' separator '(' exp ',' NAME ')' separator
@@ -692,13 +721,43 @@ statement:
ldlex_popstate (); ldlex_popstate ();
lang_add_assignment (exp_assert ($4, $6)); lang_add_assignment (exp_assert ($4, $6));
} }
| DEBUG ON
{
yydebug = 1;
}
| DEBUG OFF
{
yydebug = 0;
}
| INCLUDE filename | INCLUDE filename
{ {
ldfile_open_command_file ($2); ldfile_open_command_file ($2);
} }
statement_list_opt END statement_list_opt END
; ;
polynome:
NAME
{
polynome_valid = lang_set_digest($1);
}
| POLY '(' mustbe_exp ','
mustbe_exp ',' mustbe_exp ',' mustbe_exp ','
mustbe_exp ',' mustbe_exp ',' mustbe_exp ')'
{
lang_add_digest (
$3->value.value, /* size */
$5->value.value, /* polynome */
$7->value.value, /* initial value */
$9->value.value, /* xor value */
$11->value.value, /* input reflected */
$13->value.value, /* output reflected */
$15->value.value /* reciprocal */
);
polynome_valid = true;
}
statement_list: statement_list:
statement_list statement statement_list statement
| statement | statement