patch-2.4.22 linux-2.4.22/drivers/scsi/aic79xx/aicasm/aicasm_gram.y
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- Lines: 1946
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/drivers/scsi/aic79xx/aicasm/aicasm_gram.y
- Orig date:
2003-06-13 07:51:36.000000000 -0700
diff -urN linux-2.4.21/drivers/scsi/aic79xx/aicasm/aicasm_gram.y linux-2.4.22/drivers/scsi/aic79xx/aicasm/aicasm_gram.y
@@ -1,1945 +0,0 @@
-%{
-/*
- * 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#29 $
- *
- * $FreeBSD$
- */
-
-#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_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
-
-%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 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 { $$ = AIC_OP_ROR; }
-;
-
-code:
- f2_opcode destination ',' expression opt_source ret ';'
- {
- format_2_instr($1, &$2, &$4, &$5, $6);
- }
-;
-
-jmp_jc_jnc_call:
- T_JMP { $$ = 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);
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)