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android_kernel_xiaomi_sm8350/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y
Hannes Reinecke 2628ed2b1a [SCSI] aic7xxx: Update aicasm 
This patchset updates aicasm code with the latest fixes from adaptec.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-31 14:39:44 -06:00

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%{
/*
* Parser for the Aic7xxx SCSI Host adapter sequencer assembler.
*
* Copyright (c) 1997, 1998, 2000 Justin T. Gibbs.
* Copyright (c) 2001, 2002 Adaptec Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_gram.y#30 $
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <inttypes.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#ifdef __linux__
#include "../queue.h"
#else
#include <sys/queue.h>
#endif
#include "aicasm.h"
#include "aicasm_symbol.h"
#include "aicasm_insformat.h"
int yylineno;
char *yyfilename;
char stock_prefix[] = "aic_";
char *prefix = stock_prefix;
char *patch_arg_list;
char *versions;
static char errbuf[255];
static char regex_pattern[255];
static symbol_t *cur_symbol;
static symbol_t *field_symbol;
static symbol_t *scb_or_sram_symbol;
static symtype cur_symtype;
static symbol_ref_t accumulator;
static symbol_ref_t mode_ptr;
static symbol_ref_t allones;
static symbol_ref_t allzeros;
static symbol_ref_t none;
static symbol_ref_t sindex;
static int instruction_ptr;
static int num_srams;
static int sram_or_scb_offset;
static int download_constant_count;
static int in_critical_section;
static u_int enum_increment;
static u_int enum_next_value;
static void process_field(int field_type, symbol_t *sym, int mask);
static void initialize_symbol(symbol_t *symbol);
static void add_macro_arg(const char *argtext, int position);
static void add_macro_body(const char *bodytext);
static void process_register(symbol_t **p_symbol);
static void format_1_instr(int opcode, symbol_ref_t *dest,
expression_t *immed, symbol_ref_t *src, int ret);
static void format_2_instr(int opcode, symbol_ref_t *dest,
expression_t *places, symbol_ref_t *src, int ret);
static void format_3_instr(int opcode, symbol_ref_t *src,
expression_t *immed, symbol_ref_t *address);
static void test_readable_symbol(symbol_t *symbol);
static void test_writable_symbol(symbol_t *symbol);
static void type_check(symbol_t *symbol, expression_t *expression, int and_op);
static void make_expression(expression_t *immed, int value);
static void add_conditional(symbol_t *symbol);
static void add_version(const char *verstring);
static int is_download_const(expression_t *immed);
#define SRAM_SYMNAME "SRAM_BASE"
#define SCB_SYMNAME "SCB_BASE"
%}
%union {
u_int value;
char *str;
symbol_t *sym;
symbol_ref_t sym_ref;
expression_t expression;
}
%token T_REGISTER
%token <value> T_CONST
%token T_EXPORT
%token T_DOWNLOAD
%token T_SCB
%token T_SRAM
%token T_ALIAS
%token T_SIZE
%token T_EXPR_LSHIFT
%token T_EXPR_RSHIFT
%token <value> T_ADDRESS
%token T_ACCESS_MODE
%token T_MODES
%token T_DEFINE
%token T_SET_SRC_MODE
%token T_SET_DST_MODE
%token <value> T_MODE
%token T_BEGIN_CS
%token T_END_CS
%token T_PAD_PAGE
%token T_FIELD
%token T_ENUM
%token T_MASK
%token <value> T_NUMBER
%token <str> T_PATH T_STRING T_ARG T_MACROBODY
%token <sym> T_CEXPR
%token T_EOF T_INCLUDE T_VERSION T_PREFIX T_PATCH_ARG_LIST
%token <value> T_SHR T_SHL T_ROR T_ROL
%token <value> T_MVI T_MOV T_CLR T_BMOV
%token <value> T_JMP T_JC T_JNC T_JE T_JNE T_JNZ T_JZ T_CALL
%token <value> T_ADD T_ADC
%token <value> T_INC T_DEC
%token <value> T_STC T_CLC
%token <value> T_CMP T_NOT T_XOR
%token <value> T_TEST T_AND
%token <value> T_OR
/* 16 bit extensions */
%token <value> T_OR16 T_AND16 T_XOR16 T_ADD16
%token <value> T_ADC16 T_MVI16 T_TEST16 T_CMP16 T_CMPXCHG
%token T_RET
%token T_NOP
%token T_ACCUM T_ALLONES T_ALLZEROS T_NONE T_SINDEX T_MODE_PTR
%token T_A
%token <sym> T_SYMBOL
%token T_NL
%token T_IF T_ELSE T_ELSE_IF T_ENDIF
%type <sym_ref> reg_symbol address destination source opt_source
%type <expression> expression immediate immediate_or_a
%type <value> export ret f1_opcode f2_opcode f4_opcode jmp_jc_jnc_call jz_jnz je_jne
%type <value> mode_value mode_list macro_arglist
%left '|'
%left '&'
%left T_EXPR_LSHIFT T_EXPR_RSHIFT
%left '+' '-'
%left '*' '/'
%right '~'
%nonassoc UMINUS
%%
program:
include
| program include
| prefix
| program prefix
| patch_arg_list
| program patch_arg_list
| version
| program version
| register
| program register
| constant
| program constant
| macrodefn
| program macrodefn
| scratch_ram
| program scratch_ram
| scb
| program scb
| label
| program label
| set_src_mode
| program set_src_mode
| set_dst_mode
| program set_dst_mode
| critical_section_start
| program critical_section_start
| critical_section_end
| program critical_section_end
| conditional
| program conditional
| code
| program code
;
include:
T_INCLUDE '<' T_PATH '>'
{
include_file($3, BRACKETED_INCLUDE);
}
| T_INCLUDE '"' T_PATH '"'
{
include_file($3, QUOTED_INCLUDE);
}
;
prefix:
T_PREFIX '=' T_STRING
{
if (prefix != stock_prefix)
stop("Prefix multiply defined",
EX_DATAERR);
prefix = strdup($3);
if (prefix == NULL)
stop("Unable to record prefix", EX_SOFTWARE);
}
;
patch_arg_list:
T_PATCH_ARG_LIST '=' T_STRING
{
if (patch_arg_list != NULL)
stop("Patch argument list multiply defined",
EX_DATAERR);
patch_arg_list = strdup($3);
if (patch_arg_list == NULL)
stop("Unable to record patch arg list", EX_SOFTWARE);
}
;
version:
T_VERSION '=' T_STRING
{ add_version($3); }
;
register:
T_REGISTER { cur_symtype = REGISTER; } reg_definition
;
reg_definition:
T_SYMBOL '{'
{
if ($1->type != UNINITIALIZED) {
stop("Register multiply defined", EX_DATAERR);
/* NOTREACHED */
}
cur_symbol = $1;
cur_symbol->type = cur_symtype;
initialize_symbol(cur_symbol);
}
reg_attribute_list
'}'
{
/*
* Default to allowing everything in for registers
* with no bit or mask definitions.
*/
if (cur_symbol->info.rinfo->valid_bitmask == 0)
cur_symbol->info.rinfo->valid_bitmask = 0xFF;
if (cur_symbol->info.rinfo->size == 0)
cur_symbol->info.rinfo->size = 1;
/*
* This might be useful for registers too.
*/
if (cur_symbol->type != REGISTER) {
if (cur_symbol->info.rinfo->address == 0)
cur_symbol->info.rinfo->address =
sram_or_scb_offset;
sram_or_scb_offset +=
cur_symbol->info.rinfo->size;
}
cur_symbol = NULL;
}
;
reg_attribute_list:
reg_attribute
| reg_attribute_list reg_attribute
;
reg_attribute:
reg_address
| size
| access_mode
| modes
| field_defn
| enum_defn
| mask_defn
| alias
| accumulator
| mode_pointer
| allones
| allzeros
| none
| sindex
;
reg_address:
T_ADDRESS T_NUMBER
{
cur_symbol->info.rinfo->address = $2;
}
;
size:
T_SIZE T_NUMBER
{
cur_symbol->info.rinfo->size = $2;
if (scb_or_sram_symbol != NULL) {
u_int max_addr;
u_int sym_max_addr;
max_addr = scb_or_sram_symbol->info.rinfo->address
+ scb_or_sram_symbol->info.rinfo->size;
sym_max_addr = cur_symbol->info.rinfo->address
+ cur_symbol->info.rinfo->size;
if (sym_max_addr > max_addr)
stop("SCB or SRAM space exhausted", EX_DATAERR);
}
}
;
access_mode:
T_ACCESS_MODE T_MODE
{
cur_symbol->info.rinfo->mode = $2;
}
;
modes:
T_MODES mode_list
{
cur_symbol->info.rinfo->modes = $2;
}
;
mode_list:
mode_value
{
$$ = $1;
}
| mode_list ',' mode_value
{
$$ = $1 | $3;
}
;
mode_value:
T_NUMBER
{
if ($1 > 4) {
stop("Valid register modes range between 0 and 4.",
EX_DATAERR);
/* NOTREACHED */
}
$$ = (0x1 << $1);
}
| T_SYMBOL
{
symbol_t *symbol;
symbol = $1;
if (symbol->type != CONST) {
stop("Only \"const\" symbols allowed in "
"mode definitions.", EX_DATAERR);
/* NOTREACHED */
}
if (symbol->info.cinfo->value > 4) {
stop("Valid register modes range between 0 and 4.",
EX_DATAERR);
/* NOTREACHED */
}
$$ = (0x1 << symbol->info.cinfo->value);
}
;
field_defn:
T_FIELD
{
field_symbol = NULL;
enum_next_value = 0;
enum_increment = 1;
}
'{' enum_entry_list '}'
| T_FIELD T_SYMBOL expression
{
process_field(FIELD, $2, $3.value);
field_symbol = $2;
enum_next_value = 0;
enum_increment = 0x01 << (ffs($3.value) - 1);
}
'{' enum_entry_list '}'
| T_FIELD T_SYMBOL expression
{
process_field(FIELD, $2, $3.value);
}
;
enum_defn:
T_ENUM
{
field_symbol = NULL;
enum_next_value = 0;
enum_increment = 1;
}
'{' enum_entry_list '}'
| T_ENUM T_SYMBOL expression
{
process_field(ENUM, $2, $3.value);
field_symbol = $2;
enum_next_value = 0;
enum_increment = 0x01 << (ffs($3.value) - 1);
}
'{' enum_entry_list '}'
;
enum_entry_list:
enum_entry
| enum_entry_list ',' enum_entry
;
enum_entry:
T_SYMBOL
{
process_field(ENUM_ENTRY, $1, enum_next_value);
enum_next_value += enum_increment;
}
| T_SYMBOL expression
{
process_field(ENUM_ENTRY, $1, $2.value);
enum_next_value = $2.value + enum_increment;
}
;
mask_defn:
T_MASK T_SYMBOL expression
{
process_field(MASK, $2, $3.value);
}
;
alias:
T_ALIAS T_SYMBOL
{
if ($2->type != UNINITIALIZED) {
stop("Re-definition of register alias",
EX_DATAERR);
/* NOTREACHED */
}
$2->type = ALIAS;
initialize_symbol($2);
$2->info.ainfo->parent = cur_symbol;
}
;
accumulator:
T_ACCUM
{
if (accumulator.symbol != NULL) {
stop("Only one accumulator definition allowed",
EX_DATAERR);
/* NOTREACHED */
}
accumulator.symbol = cur_symbol;
}
;
mode_pointer:
T_MODE_PTR
{
if (mode_ptr.symbol != NULL) {
stop("Only one mode pointer definition allowed",
EX_DATAERR);
/* NOTREACHED */
}
mode_ptr.symbol = cur_symbol;
}
;
allones:
T_ALLONES
{
if (allones.symbol != NULL) {
stop("Only one definition of allones allowed",
EX_DATAERR);
/* NOTREACHED */
}
allones.symbol = cur_symbol;
}
;
allzeros:
T_ALLZEROS
{
if (allzeros.symbol != NULL) {
stop("Only one definition of allzeros allowed",
EX_DATAERR);
/* NOTREACHED */
}
allzeros.symbol = cur_symbol;
}
;
none:
T_NONE
{
if (none.symbol != NULL) {
stop("Only one definition of none allowed",
EX_DATAERR);
/* NOTREACHED */
}
none.symbol = cur_symbol;
}
;
sindex:
T_SINDEX
{
if (sindex.symbol != NULL) {
stop("Only one definition of sindex allowed",
EX_DATAERR);
/* NOTREACHED */
}
sindex.symbol = cur_symbol;
}
;
expression:
expression '|' expression
{
$$.value = $1.value | $3.value;
symlist_merge(&$$.referenced_syms,
&$1.referenced_syms,
&$3.referenced_syms);
}
| expression '&' expression
{
$$.value = $1.value & $3.value;
symlist_merge(&$$.referenced_syms,
&$1.referenced_syms,
&$3.referenced_syms);
}
| expression '+' expression
{
$$.value = $1.value + $3.value;
symlist_merge(&$$.referenced_syms,
&$1.referenced_syms,
&$3.referenced_syms);
}
| expression '-' expression
{
$$.value = $1.value - $3.value;
symlist_merge(&($$.referenced_syms),
&($1.referenced_syms),
&($3.referenced_syms));
}
| expression '*' expression
{
$$.value = $1.value * $3.value;
symlist_merge(&($$.referenced_syms),
&($1.referenced_syms),
&($3.referenced_syms));
}
| expression '/' expression
{
$$.value = $1.value / $3.value;
symlist_merge(&($$.referenced_syms),
&($1.referenced_syms),
&($3.referenced_syms));
}
| expression T_EXPR_LSHIFT expression
{
$$.value = $1.value << $3.value;
symlist_merge(&$$.referenced_syms,
&$1.referenced_syms,
&$3.referenced_syms);
}
| expression T_EXPR_RSHIFT expression
{
$$.value = $1.value >> $3.value;
symlist_merge(&$$.referenced_syms,
&$1.referenced_syms,
&$3.referenced_syms);
}
| '(' expression ')'
{
$$ = $2;
}
| '~' expression
{
$$ = $2;
$$.value = (~$$.value) & 0xFF;
}
| '-' expression %prec UMINUS
{
$$ = $2;
$$.value = -$$.value;
}
| T_NUMBER
{
$$.value = $1;
SLIST_INIT(&$$.referenced_syms);
}
| T_SYMBOL
{
symbol_t *symbol;
symbol = $1;
switch (symbol->type) {
case ALIAS:
symbol = $1->info.ainfo->parent;
case REGISTER:
case SCBLOC:
case SRAMLOC:
$$.value = symbol->info.rinfo->address;
break;
case MASK:
case FIELD:
case ENUM:
case ENUM_ENTRY:
$$.value = symbol->info.finfo->value;
break;
case DOWNLOAD_CONST:
case CONST:
$$.value = symbol->info.cinfo->value;
break;
case UNINITIALIZED:
default:
{
snprintf(errbuf, sizeof(errbuf),
"Undefined symbol %s referenced",
symbol->name);
stop(errbuf, EX_DATAERR);
/* NOTREACHED */
break;
}
}
SLIST_INIT(&$$.referenced_syms);
symlist_add(&$$.referenced_syms, symbol, SYMLIST_INSERT_HEAD);
}
;
constant:
T_CONST T_SYMBOL expression
{
if ($2->type != UNINITIALIZED) {
stop("Re-definition of symbol as a constant",
EX_DATAERR);
/* NOTREACHED */
}
$2->type = CONST;
initialize_symbol($2);
$2->info.cinfo->value = $3.value;
}
| T_CONST T_SYMBOL T_DOWNLOAD
{
if ($1) {
stop("Invalid downloaded constant declaration",
EX_DATAERR);
/* NOTREACHED */
}
if ($2->type != UNINITIALIZED) {
stop("Re-definition of symbol as a downloaded constant",
EX_DATAERR);
/* NOTREACHED */
}
$2->type = DOWNLOAD_CONST;
initialize_symbol($2);
$2->info.cinfo->value = download_constant_count++;
}
;
macrodefn_prologue:
T_DEFINE T_SYMBOL
{
if ($2->type != UNINITIALIZED) {
stop("Re-definition of symbol as a macro",
EX_DATAERR);
/* NOTREACHED */
}
cur_symbol = $2;
cur_symbol->type = MACRO;
initialize_symbol(cur_symbol);
}
;
macrodefn:
macrodefn_prologue T_MACROBODY
{
add_macro_body($2);
}
| macrodefn_prologue '(' macro_arglist ')' T_MACROBODY
{
add_macro_body($5);
cur_symbol->info.macroinfo->narg = $3;
}
;
macro_arglist:
{
/* Macros can take no arguments */
$$ = 0;
}
| T_ARG
{
$$ = 1;
add_macro_arg($1, 0);
}
| macro_arglist ',' T_ARG
{
if ($1 == 0) {
stop("Comma without preceeding argument in arg list",
EX_DATAERR);
/* NOTREACHED */
}
$$ = $1 + 1;
add_macro_arg($3, $1);
}
;
scratch_ram:
T_SRAM '{'
{
snprintf(errbuf, sizeof(errbuf), "%s%d", SRAM_SYMNAME,
num_srams);
cur_symbol = symtable_get(SRAM_SYMNAME);
cur_symtype = SRAMLOC;
cur_symbol->type = SRAMLOC;
initialize_symbol(cur_symbol);
}
reg_address
{
sram_or_scb_offset = cur_symbol->info.rinfo->address;
}
size
{
scb_or_sram_symbol = cur_symbol;
}
scb_or_sram_attributes
'}'
{
cur_symbol = NULL;
scb_or_sram_symbol = NULL;
}
;
scb:
T_SCB '{'
{
cur_symbol = symtable_get(SCB_SYMNAME);
cur_symtype = SCBLOC;
if (cur_symbol->type != UNINITIALIZED) {
stop("Only one SRAM definition allowed",
EX_SOFTWARE);
/* NOTREACHED */
}
cur_symbol->type = SCBLOC;
initialize_symbol(cur_symbol);
/* 64 bytes of SCB space */
cur_symbol->info.rinfo->size = 64;
}
reg_address
{
sram_or_scb_offset = cur_symbol->info.rinfo->address;
}
size
{
scb_or_sram_symbol = cur_symbol;
}
scb_or_sram_attributes
'}'
{
cur_symbol = NULL;
scb_or_sram_symbol = NULL;
}
;
scb_or_sram_attributes:
/* NULL definition is okay */
| modes
| scb_or_sram_reg_list
| modes scb_or_sram_reg_list
;
scb_or_sram_reg_list:
reg_definition
| scb_or_sram_reg_list reg_definition
;
reg_symbol:
T_SYMBOL
{
process_register(&$1);
$$.symbol = $1;
$$.offset = 0;
}
| T_SYMBOL '[' T_SYMBOL ']'
{
process_register(&$1);
if ($3->type != CONST) {
stop("register offset must be a constant", EX_DATAERR);
/* NOTREACHED */
}
if (($3->info.cinfo->value + 1) > $1->info.rinfo->size) {
stop("Accessing offset beyond range of register",
EX_DATAERR);
/* NOTREACHED */
}
$$.symbol = $1;
$$.offset = $3->info.cinfo->value;
}
| T_SYMBOL '[' T_NUMBER ']'
{
process_register(&$1);
if (($3 + 1) > $1->info.rinfo->size) {
stop("Accessing offset beyond range of register",
EX_DATAERR);
/* NOTREACHED */
}
$$.symbol = $1;
$$.offset = $3;
}
| T_A
{
if (accumulator.symbol == NULL) {
stop("No accumulator has been defined", EX_DATAERR);
/* NOTREACHED */
}
$$.symbol = accumulator.symbol;
$$.offset = 0;
}
;
destination:
reg_symbol
{
test_writable_symbol($1.symbol);
$$ = $1;
}
;
immediate:
expression
{ $$ = $1; }
;
immediate_or_a:
expression
{
if ($1.value == 0 && is_download_const(&$1) == 0) {
snprintf(errbuf, sizeof(errbuf),
"\nExpression evaluates to 0 and thus "
"references the accumulator.\n "
"If this is the desired effect, use 'A' "
"instead.\n");
stop(errbuf, EX_DATAERR);
}
$$ = $1;
}
| T_A
{
SLIST_INIT(&$$.referenced_syms);
symlist_add(&$$.referenced_syms, accumulator.symbol,
SYMLIST_INSERT_HEAD);
$$.value = 0;
}
;
source:
reg_symbol
{
test_readable_symbol($1.symbol);
$$ = $1;
}
;
opt_source:
{
$$.symbol = NULL;
$$.offset = 0;
}
| ',' source
{ $$ = $2; }
;
ret:
{ $$ = 0; }
| T_RET
{ $$ = 1; }
;
set_src_mode:
T_SET_SRC_MODE T_NUMBER ';'
{
src_mode = $2;
}
;
set_dst_mode:
T_SET_DST_MODE T_NUMBER ';'
{
dst_mode = $2;
}
;
critical_section_start:
T_BEGIN_CS ';'
{
critical_section_t *cs;
if (in_critical_section != FALSE) {
stop("Critical Section within Critical Section",
EX_DATAERR);
/* NOTREACHED */
}
cs = cs_alloc();
cs->begin_addr = instruction_ptr;
in_critical_section = TRUE;
}
;
critical_section_end:
T_END_CS ';'
{
critical_section_t *cs;
if (in_critical_section == FALSE) {
stop("Unballanced 'end_cs'", EX_DATAERR);
/* NOTREACHED */
}
cs = TAILQ_LAST(&cs_tailq, cs_tailq);
cs->end_addr = instruction_ptr;
in_critical_section = FALSE;
}
;
export:
{ $$ = 0; }
| T_EXPORT
{ $$ = 1; }
;
label:
export T_SYMBOL ':'
{
if ($2->type != UNINITIALIZED) {
stop("Program label multiply defined", EX_DATAERR);
/* NOTREACHED */
}
$2->type = LABEL;
initialize_symbol($2);
$2->info.linfo->address = instruction_ptr;
$2->info.linfo->exported = $1;
}
;
address:
T_SYMBOL
{
$$.symbol = $1;
$$.offset = 0;
}
| T_SYMBOL '+' T_NUMBER
{
$$.symbol = $1;
$$.offset = $3;
}
| T_SYMBOL '-' T_NUMBER
{
$$.symbol = $1;
$$.offset = -$3;
}
| '.'
{
$$.symbol = NULL;
$$.offset = 0;
}
| '.' '+' T_NUMBER
{
$$.symbol = NULL;
$$.offset = $3;
}
| '.' '-' T_NUMBER
{
$$.symbol = NULL;
$$.offset = -$3;
}
;
conditional:
T_IF T_CEXPR '{'
{
scope_t *new_scope;
add_conditional($2);
new_scope = scope_alloc();
new_scope->type = SCOPE_IF;
new_scope->begin_addr = instruction_ptr;
new_scope->func_num = $2->info.condinfo->func_num;
}
| T_ELSE T_IF T_CEXPR '{'
{
scope_t *new_scope;
scope_t *scope_context;
scope_t *last_scope;
/*
* Ensure that the previous scope is either an
* if or and else if.
*/
scope_context = SLIST_FIRST(&scope_stack);
last_scope = TAILQ_LAST(&scope_context->inner_scope,
scope_tailq);
if (last_scope == NULL
|| last_scope->type == T_ELSE) {
stop("'else if' without leading 'if'", EX_DATAERR);
/* NOTREACHED */
}
add_conditional($3);
new_scope = scope_alloc();
new_scope->type = SCOPE_ELSE_IF;
new_scope->begin_addr = instruction_ptr;
new_scope->func_num = $3->info.condinfo->func_num;
}
| T_ELSE '{'
{
scope_t *new_scope;
scope_t *scope_context;
scope_t *last_scope;
/*
* Ensure that the previous scope is either an
* if or and else if.
*/
scope_context = SLIST_FIRST(&scope_stack);
last_scope = TAILQ_LAST(&scope_context->inner_scope,
scope_tailq);
if (last_scope == NULL
|| last_scope->type == SCOPE_ELSE) {
stop("'else' without leading 'if'", EX_DATAERR);
/* NOTREACHED */
}
new_scope = scope_alloc();
new_scope->type = SCOPE_ELSE;
new_scope->begin_addr = instruction_ptr;
}
;
conditional:
'}'
{
scope_t *scope_context;
scope_context = SLIST_FIRST(&scope_stack);
if (scope_context->type == SCOPE_ROOT) {
stop("Unexpected '}' encountered", EX_DATAERR);
/* NOTREACHED */
}
scope_context->end_addr = instruction_ptr;
/* Pop the scope */
SLIST_REMOVE_HEAD(&scope_stack, scope_stack_links);
process_scope(scope_context);
if (SLIST_FIRST(&scope_stack) == NULL) {
stop("Unexpected '}' encountered", EX_DATAERR);
/* NOTREACHED */
}
}
;
f1_opcode:
T_AND { $$ = AIC_OP_AND; }
| T_XOR { $$ = AIC_OP_XOR; }
| T_ADD { $$ = AIC_OP_ADD; }
| T_ADC { $$ = AIC_OP_ADC; }
;
code:
f1_opcode destination ',' immediate_or_a opt_source ret ';'
{
format_1_instr($1, &$2, &$4, &$5, $6);
}
;
code:
T_OR reg_symbol ',' immediate_or_a opt_source ret ';'
{
format_1_instr(AIC_OP_OR, &$2, &$4, &$5, $6);
}
;
code:
T_INC destination opt_source ret ';'
{
expression_t immed;
make_expression(&immed, 1);
format_1_instr(AIC_OP_ADD, &$2, &immed, &$3, $4);
}
;
code:
T_DEC destination opt_source ret ';'
{
expression_t immed;
make_expression(&immed, -1);
format_1_instr(AIC_OP_ADD, &$2, &immed, &$3, $4);
}
;
code:
T_CLC ret ';'
{
expression_t immed;
make_expression(&immed, -1);
format_1_instr(AIC_OP_ADD, &none, &immed, &allzeros, $2);
}
| T_CLC T_MVI destination ',' immediate_or_a ret ';'
{
format_1_instr(AIC_OP_ADD, &$3, &$5, &allzeros, $6);
}
;
code:
T_STC ret ';'
{
expression_t immed;
make_expression(&immed, 1);
format_1_instr(AIC_OP_ADD, &none, &immed, &allones, $2);
}
| T_STC destination ret ';'
{
expression_t immed;
make_expression(&immed, 1);
format_1_instr(AIC_OP_ADD, &$2, &immed, &allones, $3);
}
;
code:
T_BMOV destination ',' source ',' immediate ret ';'
{
format_1_instr(AIC_OP_BMOV, &$2, &$6, &$4, $7);
}
;
code:
T_MOV destination ',' source ret ';'
{
expression_t immed;
make_expression(&immed, 1);
format_1_instr(AIC_OP_BMOV, &$2, &immed, &$4, $5);
}
;
code:
T_MVI destination ',' immediate ret ';'
{
if ($4.value == 0
&& is_download_const(&$4) == 0) {
expression_t immed;
/*
* Allow move immediates of 0 so that macros,
* that can't know the immediate's value and
* otherwise compensate, still work.
*/
make_expression(&immed, 1);
format_1_instr(AIC_OP_BMOV, &$2, &immed, &allzeros, $5);
} else {
format_1_instr(AIC_OP_OR, &$2, &$4, &allzeros, $5);
}
}
;
code:
T_NOT destination opt_source ret ';'
{
expression_t immed;
make_expression(&immed, 0xff);
format_1_instr(AIC_OP_XOR, &$2, &immed, &$3, $4);
}
;
code:
T_CLR destination ret ';'
{
expression_t immed;
make_expression(&immed, 0xff);
format_1_instr(AIC_OP_AND, &$2, &immed, &allzeros, $3);
}
;
code:
T_NOP ret ';'
{
expression_t immed;
make_expression(&immed, 0xff);
format_1_instr(AIC_OP_AND, &none, &immed, &allzeros, $2);
}
;
code:
T_RET ';'
{
expression_t immed;
make_expression(&immed, 0xff);
format_1_instr(AIC_OP_AND, &none, &immed, &allzeros, TRUE);
}
;
/*
* This grammer differs from the one in the aic7xxx
* reference manual since the grammer listed there is
* ambiguous and causes a shift/reduce conflict.
* It also seems more logical as the "immediate"
* argument is listed as the second arg like the
* other formats.
*/
f2_opcode:
T_SHL { $$ = AIC_OP_SHL; }
| T_SHR { $$ = AIC_OP_SHR; }
| T_ROL { $$ = AIC_OP_ROL; }
| T_ROR { $$ = AIC_OP_ROR; }
;
f4_opcode:
T_OR16 { $$ = AIC_OP_OR16; }
| T_AND16 { $$ = AIC_OP_AND16; }
| T_XOR16 { $$ = AIC_OP_XOR16; }
| T_ADD16 { $$ = AIC_OP_ADD16; }
| T_ADC16 { $$ = AIC_OP_ADC16; }
| T_MVI16 { $$ = AIC_OP_MVI16; }
;
code:
f2_opcode destination ',' expression opt_source ret ';'
{
format_2_instr($1, &$2, &$4, &$5, $6);
}
;
jmp_jc_jnc_call:
T_JMP { $$ = AIC_OP_JMP; }
| T_JC { $$ = AIC_OP_JC; }
| T_JNC { $$ = AIC_OP_JNC; }
| T_CALL { $$ = AIC_OP_CALL; }
;
jz_jnz:
T_JZ { $$ = AIC_OP_JZ; }
| T_JNZ { $$ = AIC_OP_JNZ; }
;
je_jne:
T_JE { $$ = AIC_OP_JE; }
| T_JNE { $$ = AIC_OP_JNE; }
;
code:
jmp_jc_jnc_call address ';'
{
expression_t immed;
make_expression(&immed, 0);
format_3_instr($1, &sindex, &immed, &$2);
}
;
code:
T_OR reg_symbol ',' immediate jmp_jc_jnc_call address ';'
{
format_3_instr($5, &$2, &$4, &$6);
}
;
code:
T_TEST source ',' immediate_or_a jz_jnz address ';'
{
format_3_instr($5, &$2, &$4, &$6);
}
;
code:
T_CMP source ',' immediate_or_a je_jne address ';'
{
format_3_instr($5, &$2, &$4, &$6);
}
;
code:
T_MOV source jmp_jc_jnc_call address ';'
{
expression_t immed;
make_expression(&immed, 0);
format_3_instr($3, &$2, &immed, &$4);
}
;
code:
T_MVI immediate jmp_jc_jnc_call address ';'
{
format_3_instr($3, &allzeros, &$2, &$4);
}
;
%%
static void
process_field(int field_type, symbol_t *sym, int value)
{
/*
* Add the current register to its
* symbol list, if it already exists,
* warn if we are setting it to a
* different value, or in the bit to
* the "allowed bits" of this register.
*/
if (sym->type == UNINITIALIZED) {
sym->type = field_type;
initialize_symbol(sym);
sym->info.finfo->value = value;
if (field_type != ENUM_ENTRY) {
if (field_type != MASK && value == 0) {
stop("Empty Field, or Enum", EX_DATAERR);
/* NOTREACHED */
}
sym->info.finfo->value = value;
sym->info.finfo->mask = value;
} else if (field_symbol != NULL) {
sym->info.finfo->mask = field_symbol->info.finfo->value;
} else {
sym->info.finfo->mask = 0xFF;
}
} else if (sym->type != field_type) {
stop("Field definition mirrors a definition of the same "
" name, but a different type", EX_DATAERR);
/* NOTREACHED */
} else if (value != sym->info.finfo->value) {
stop("Field redefined with a conflicting value", EX_DATAERR);
/* NOTREACHED */
}
/* Fail if this symbol is already listed */
if (symlist_search(&(sym->info.finfo->symrefs),
cur_symbol->name) != NULL) {
stop("Field defined multiple times for register", EX_DATAERR);
/* NOTREACHED */
}
symlist_add(&(sym->info.finfo->symrefs), cur_symbol,
SYMLIST_INSERT_HEAD);
cur_symbol->info.rinfo->valid_bitmask |= sym->info.finfo->mask;
cur_symbol->info.rinfo->typecheck_masks = TRUE;
symlist_add(&(cur_symbol->info.rinfo->fields), sym, SYMLIST_SORT);
}
static void
initialize_symbol(symbol_t *symbol)
{
switch (symbol->type) {
case UNINITIALIZED:
stop("Call to initialize_symbol with type field unset",
EX_SOFTWARE);
/* NOTREACHED */
break;
case REGISTER:
case SRAMLOC:
case SCBLOC:
symbol->info.rinfo =
(struct reg_info *)malloc(sizeof(struct reg_info));
if (symbol->info.rinfo == NULL) {
stop("Can't create register info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.rinfo, 0,
sizeof(struct reg_info));
SLIST_INIT(&(symbol->info.rinfo->fields));
/*
* Default to allowing access in all register modes
* or to the mode specified by the SCB or SRAM space
* we are in.
*/
if (scb_or_sram_symbol != NULL)
symbol->info.rinfo->modes =
scb_or_sram_symbol->info.rinfo->modes;
else
symbol->info.rinfo->modes = ~0;
break;
case ALIAS:
symbol->info.ainfo =
(struct alias_info *)malloc(sizeof(struct alias_info));
if (symbol->info.ainfo == NULL) {
stop("Can't create alias info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.ainfo, 0,
sizeof(struct alias_info));
break;
case MASK:
case FIELD:
case ENUM:
case ENUM_ENTRY:
symbol->info.finfo =
(struct field_info *)malloc(sizeof(struct field_info));
if (symbol->info.finfo == NULL) {
stop("Can't create field info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.finfo, 0, sizeof(struct field_info));
SLIST_INIT(&(symbol->info.finfo->symrefs));
break;
case CONST:
case DOWNLOAD_CONST:
symbol->info.cinfo =
(struct const_info *)malloc(sizeof(struct const_info));
if (symbol->info.cinfo == NULL) {
stop("Can't create alias info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.cinfo, 0,
sizeof(struct const_info));
break;
case LABEL:
symbol->info.linfo =
(struct label_info *)malloc(sizeof(struct label_info));
if (symbol->info.linfo == NULL) {
stop("Can't create label info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.linfo, 0,
sizeof(struct label_info));
break;
case CONDITIONAL:
symbol->info.condinfo =
(struct cond_info *)malloc(sizeof(struct cond_info));
if (symbol->info.condinfo == NULL) {
stop("Can't create conditional info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.condinfo, 0,
sizeof(struct cond_info));
break;
case MACRO:
symbol->info.macroinfo =
(struct macro_info *)malloc(sizeof(struct macro_info));
if (symbol->info.macroinfo == NULL) {
stop("Can't create macro info", EX_SOFTWARE);
/* NOTREACHED */
}
memset(symbol->info.macroinfo, 0,
sizeof(struct macro_info));
STAILQ_INIT(&symbol->info.macroinfo->args);
break;
default:
stop("Call to initialize_symbol with invalid symbol type",
EX_SOFTWARE);
/* NOTREACHED */
break;
}
}
static void
add_macro_arg(const char *argtext, int argnum)
{
struct macro_arg *marg;
int i;
int retval;
if (cur_symbol == NULL || cur_symbol->type != MACRO) {
stop("Invalid current symbol for adding macro arg",
EX_SOFTWARE);
/* NOTREACHED */
}
marg = (struct macro_arg *)malloc(sizeof(*marg));
if (marg == NULL) {
stop("Can't create macro_arg structure", EX_SOFTWARE);
/* NOTREACHED */
}
marg->replacement_text = NULL;
retval = snprintf(regex_pattern, sizeof(regex_pattern),
"[^-/A-Za-z0-9_](%s)([^-/A-Za-z0-9_]|$)",
argtext);
if (retval >= sizeof(regex_pattern)) {
stop("Regex text buffer too small for arg",
EX_SOFTWARE);
/* NOTREACHED */
}
retval = regcomp(&marg->arg_regex, regex_pattern, REG_EXTENDED);
if (retval != 0) {
stop("Regex compilation failed", EX_SOFTWARE);
/* NOTREACHED */
}
STAILQ_INSERT_TAIL(&cur_symbol->info.macroinfo->args, marg, links);
}
static void
add_macro_body(const char *bodytext)
{
if (cur_symbol == NULL || cur_symbol->type != MACRO) {
stop("Invalid current symbol for adding macro arg",
EX_SOFTWARE);
/* NOTREACHED */
}
cur_symbol->info.macroinfo->body = strdup(bodytext);
if (cur_symbol->info.macroinfo->body == NULL) {
stop("Can't duplicate macro body text", EX_SOFTWARE);
/* NOTREACHED */
}
}
static void
process_register(symbol_t **p_symbol)
{
symbol_t *symbol = *p_symbol;
if (symbol->type == UNINITIALIZED) {
snprintf(errbuf, sizeof(errbuf), "Undefined register %s",
symbol->name);
stop(errbuf, EX_DATAERR);
/* NOTREACHED */
} else if (symbol->type == ALIAS) {
*p_symbol = symbol->info.ainfo->parent;
} else if ((symbol->type != REGISTER)
&& (symbol->type != SCBLOC)
&& (symbol->type != SRAMLOC)) {
snprintf(errbuf, sizeof(errbuf),
"Specified symbol %s is not a register",
symbol->name);
stop(errbuf, EX_DATAERR);
}
}
static void
format_1_instr(int opcode, symbol_ref_t *dest, expression_t *immed,
symbol_ref_t *src, int ret)
{
struct instruction *instr;
struct ins_format1 *f1_instr;
if (src->symbol == NULL)
src = dest;
/* Test register permissions */
test_writable_symbol(dest->symbol);
test_readable_symbol(src->symbol);
/* Ensure that immediate makes sense for this destination */
type_check(dest->symbol, immed, opcode);
/* Allocate sequencer space for the instruction and fill it out */
instr = seq_alloc();
f1_instr = &instr->format.format1;
f1_instr->ret = ret ? 1 : 0;
f1_instr->opcode = opcode;
f1_instr->destination = dest->symbol->info.rinfo->address
+ dest->offset;
f1_instr->source = src->symbol->info.rinfo->address
+ src->offset;
f1_instr->immediate = immed->value;
if (is_download_const(immed))
f1_instr->parity = 1;
else if (dest->symbol == mode_ptr.symbol) {
u_int src_value;
u_int dst_value;
/*
* Attempt to update mode information if
* we are operating on the mode register.
*/
if (src->symbol == allones.symbol)
src_value = 0xFF;
else if (src->symbol == allzeros.symbol)
src_value = 0;
else if (src->symbol == mode_ptr.symbol)
src_value = (dst_mode << 4) | src_mode;
else
goto cant_update;
switch (opcode) {
case AIC_OP_AND:
dst_value = src_value & immed->value;
break;
case AIC_OP_XOR:
dst_value = src_value ^ immed->value;
break;
case AIC_OP_ADD:
dst_value = (src_value + immed->value) & 0xFF;
break;
case AIC_OP_OR:
dst_value = src_value | immed->value;
break;
case AIC_OP_BMOV:
dst_value = src_value;
break;
default:
goto cant_update;
}
src_mode = dst_value & 0xF;
dst_mode = (dst_value >> 4) & 0xF;
}
cant_update:
symlist_free(&immed->referenced_syms);
instruction_ptr++;
}
static void
format_2_instr(int opcode, symbol_ref_t *dest, expression_t *places,
symbol_ref_t *src, int ret)
{
struct instruction *instr;
struct ins_format2 *f2_instr;
uint8_t shift_control;
if (src->symbol == NULL)
src = dest;
/* Test register permissions */
test_writable_symbol(dest->symbol);
test_readable_symbol(src->symbol);
/* Allocate sequencer space for the instruction and fill it out */
instr = seq_alloc();
f2_instr = &instr->format.format2;
f2_instr->ret = ret ? 1 : 0;
f2_instr->opcode = AIC_OP_ROL;
f2_instr->destination = dest->symbol->info.rinfo->address
+ dest->offset;
f2_instr->source = src->symbol->info.rinfo->address
+ src->offset;
if (places->value > 8 || places->value <= 0) {
stop("illegal shift value", EX_DATAERR);
/* NOTREACHED */
}
switch (opcode) {
case AIC_OP_SHL:
if (places->value == 8)
shift_control = 0xf0;
else
shift_control = (places->value << 4) | places->value;
break;
case AIC_OP_SHR:
if (places->value == 8) {
shift_control = 0xf8;
} else {
shift_control = (places->value << 4)
| (8 - places->value)
| 0x08;
}
break;
case AIC_OP_ROL:
shift_control = places->value & 0x7;
break;
case AIC_OP_ROR:
shift_control = (8 - places->value) | 0x08;
break;
default:
shift_control = 0; /* Quiet Compiler */
stop("Invalid shift operation specified", EX_SOFTWARE);
/* NOTREACHED */
break;
};
f2_instr->shift_control = shift_control;
symlist_free(&places->referenced_syms);
instruction_ptr++;
}
static void
format_3_instr(int opcode, symbol_ref_t *src,
expression_t *immed, symbol_ref_t *address)
{
struct instruction *instr;
struct ins_format3 *f3_instr;
int addr;
/* Test register permissions */
test_readable_symbol(src->symbol);
/* Ensure that immediate makes sense for this source */
type_check(src->symbol, immed, opcode);
/* Allocate sequencer space for the instruction and fill it out */
instr = seq_alloc();
f3_instr = &instr->format.format3;
if (address->symbol == NULL) {
/* 'dot' referrence. Use the current instruction pointer */
addr = instruction_ptr + address->offset;
} else if (address->symbol->type == UNINITIALIZED) {
/* forward reference */
addr = address->offset;
instr->patch_label = address->symbol;
} else
addr = address->symbol->info.linfo->address + address->offset;
f3_instr->opcode = opcode;
f3_instr->address = addr;
f3_instr->source = src->symbol->info.rinfo->address
+ src->offset;
f3_instr->immediate = immed->value;
if (is_download_const(immed))
f3_instr->parity = 1;
symlist_free(&immed->referenced_syms);
instruction_ptr++;
}
static void
test_readable_symbol(symbol_t *symbol)
{
if ((symbol->info.rinfo->modes & (0x1 << src_mode)) == 0) {
snprintf(errbuf, sizeof(errbuf),
"Register %s unavailable in source reg mode %d",
symbol->name, src_mode);
stop(errbuf, EX_DATAERR);
}
if (symbol->info.rinfo->mode == WO) {
stop("Write Only register specified as source",
EX_DATAERR);
/* NOTREACHED */
}
}
static void
test_writable_symbol(symbol_t *symbol)
{
if ((symbol->info.rinfo->modes & (0x1 << dst_mode)) == 0) {
snprintf(errbuf, sizeof(errbuf),
"Register %s unavailable in destination reg mode %d",
symbol->name, dst_mode);
stop(errbuf, EX_DATAERR);
}
if (symbol->info.rinfo->mode == RO) {
stop("Read Only register specified as destination",
EX_DATAERR);
/* NOTREACHED */
}
}
static void
type_check(symbol_t *symbol, expression_t *expression, int opcode)
{
symbol_node_t *node;
int and_op;
and_op = FALSE;
if (opcode == AIC_OP_AND || opcode == AIC_OP_JNZ || AIC_OP_JZ)
and_op = TRUE;
/*
* Make sure that we aren't attempting to write something
* that hasn't been defined. If this is an and operation,
* this is a mask, so "undefined" bits are okay.
*/
if (and_op == FALSE
&& (expression->value & ~symbol->info.rinfo->valid_bitmask) != 0) {
snprintf(errbuf, sizeof(errbuf),
"Invalid bit(s) 0x%x in immediate written to %s",
expression->value & ~symbol->info.rinfo->valid_bitmask,
symbol->name);
stop(errbuf, EX_DATAERR);
/* NOTREACHED */
}
/*
* Now make sure that all of the symbols referenced by the
* expression are defined for this register.
*/
if (symbol->info.rinfo->typecheck_masks != FALSE) {
for(node = expression->referenced_syms.slh_first;
node != NULL;
node = node->links.sle_next) {
if ((node->symbol->type == MASK
|| node->symbol->type == FIELD
|| node->symbol->type == ENUM
|| node->symbol->type == ENUM_ENTRY)
&& symlist_search(&node->symbol->info.finfo->symrefs,
symbol->name) == NULL) {
snprintf(errbuf, sizeof(errbuf),
"Invalid field or mask %s "
"for register %s",
node->symbol->name, symbol->name);
stop(errbuf, EX_DATAERR);
/* NOTREACHED */
}
}
}
}
static void
make_expression(expression_t *immed, int value)
{
SLIST_INIT(&immed->referenced_syms);
immed->value = value & 0xff;
}
static void
add_conditional(symbol_t *symbol)
{
static int numfuncs;
if (numfuncs == 0) {
/* add a special conditional, "0" */
symbol_t *false_func;
false_func = symtable_get("0");
if (false_func->type != UNINITIALIZED) {
stop("Conditional expression '0' "
"conflicts with a symbol", EX_DATAERR);
/* NOTREACHED */
}
false_func->type = CONDITIONAL;
initialize_symbol(false_func);
false_func->info.condinfo->func_num = numfuncs++;
symlist_add(&patch_functions, false_func, SYMLIST_INSERT_HEAD);
}
/* This condition has occurred before */
if (symbol->type == CONDITIONAL)
return;
if (symbol->type != UNINITIALIZED) {
stop("Conditional expression conflicts with a symbol",
EX_DATAERR);
/* NOTREACHED */
}
symbol->type = CONDITIONAL;
initialize_symbol(symbol);
symbol->info.condinfo->func_num = numfuncs++;
symlist_add(&patch_functions, symbol, SYMLIST_INSERT_HEAD);
}
static void
add_version(const char *verstring)
{
const char prefix[] = " * ";
int newlen;
int oldlen;
newlen = strlen(verstring) + strlen(prefix);
oldlen = 0;
if (versions != NULL)
oldlen = strlen(versions);
versions = realloc(versions, newlen + oldlen + 2);
if (versions == NULL)
stop("Can't allocate version string", EX_SOFTWARE);
strcpy(&versions[oldlen], prefix);
strcpy(&versions[oldlen + strlen(prefix)], verstring);
versions[newlen + oldlen] = '\n';
versions[newlen + oldlen + 1] = '\0';
}
void
yyerror(const char *string)
{
stop(string, EX_DATAERR);
}
static int
is_download_const(expression_t *immed)
{
if ((immed->referenced_syms.slh_first != NULL)
&& (immed->referenced_syms.slh_first->symbol->type == DOWNLOAD_CONST))
return (TRUE);
return (FALSE);
}
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