diff options
Diffstat (limited to 'drivers/scsi/aic7xxx/aicasm/aicasm_gram.y')
| -rw-r--r-- | drivers/scsi/aic7xxx/aicasm/aicasm_gram.y | 1999 |
1 files changed, 1999 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y b/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y new file mode 100644 index 000000000..65182ad9c --- /dev/null +++ b/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y @@ -0,0 +1,1999 @@ +%{ +/* + * 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> + +#include "../queue.h" + +#include "aicasm.h" +#include "aicasm_symbol.h" +#include "aicasm_insformat.h" + +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_ref_t *sym, 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); +static int is_location_address(symbol_t *symbol); +void yyerror(const char *string); + +#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_COUNT + +%token T_ACCESS_MODE + +%token T_DONT_GENERATE_DEBUG_CODE + +%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, not implemented + * %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 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 +| count +| access_mode +| dont_generate_debug_code +| 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); + } + } +; + +count: + T_COUNT T_NUMBER + { + cur_symbol->count += $2; + } +; + +access_mode: + T_ACCESS_MODE T_MODE + { + cur_symbol->info.rinfo->mode = $2; + } +; + +dont_generate_debug_code: + T_DONT_GENERATE_DEBUG_CODE + { + cur_symbol->dont_generate_debug_code = 1; + } +; + +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 preceding argument in arg list", + EX_DATAERR); + /* NOTREACHED */ + } + $$ = $1 + 1; + add_macro_arg($3, $1); + } +; + +scratch_ram: + T_SRAM '{' + { + snprintf(errbuf, sizeof(errbuf), "%s%d", SRAM_SYMNAME, + num_srams); + cur_symbol = symtable_get(SRAM_SYMNAME); + cur_symtype = SRAMLOC; + cur_symbol->type = SRAMLOC; + initialize_symbol(cur_symbol); + cur_symbol->count += 1; + } + reg_address + { + sram_or_scb_offset = cur_symbol->info.rinfo->address; + } + size + { + scb_or_sram_symbol = cur_symbol; + } + scb_or_sram_attributes + '}' + { + cur_symbol = NULL; + scb_or_sram_symbol = NULL; + } +; + +scb: + T_SCB '{' + { + cur_symbol = symtable_get(SCB_SYMNAME); + cur_symtype = SCBLOC; + if (cur_symbol->type != UNINITIALIZED) { + stop("Only one SRAM definition allowed", + EX_SOFTWARE); + /* NOTREACHED */ + } + cur_symbol->type = SCBLOC; + initialize_symbol(cur_symbol); + /* 64 bytes of SCB space */ + cur_symbol->info.rinfo->size = 64; + cur_symbol->count += 1; + } + reg_address + { + sram_or_scb_offset = cur_symbol->info.rinfo->address; + } + size + { + scb_or_sram_symbol = cur_symbol; + } + scb_or_sram_attributes + '}' + { + cur_symbol = NULL; + scb_or_sram_symbol = NULL; + } +; + +scb_or_sram_attributes: + /* NULL definition is okay */ +| modes +| scb_or_sram_reg_list +| modes scb_or_sram_reg_list +; + +scb_or_sram_reg_list: + reg_definition +| scb_or_sram_reg_list reg_definition +; + +reg_symbol: + T_SYMBOL + { + process_register(&$1); + $$.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 grammar differs from the one in the aic7xxx + * reference manual since the grammar 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 { $$ = AIC_OP_ROR; } +; + +/* + * 16bit opcodes, not used + * + *f4_opcode: + * T_OR16 { $$ = 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 ';' + { + type_check(&$2, &$4, AIC_OP_OR); + 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); + + if (!is_location_address(dest->symbol)) { + /* Ensure that immediate makes sense for this destination */ + type_check(dest, 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); + + /* Allocate sequencer space for the instruction and fill it out */ + instr = seq_alloc(); + f3_instr = &instr->format.format3; + if (address->symbol == NULL) { + /* 'dot' reference. 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_ref_t *sym, expression_t *expression, int opcode) +{ + symbol_t *symbol = sym->symbol; + symbol_node_t *node; + int and_op; + int8_t value, mask; + + and_op = FALSE; + /* + * 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 (opcode == AIC_OP_AND || opcode == AIC_OP_JNZ || + opcode == AIC_OP_JZ || opcode == AIC_OP_JNE || + opcode == AIC_OP_BMOV) + and_op = TRUE; + + /* + * Defaulting to 8 bit logic + */ + mask = (int8_t)~symbol->info.rinfo->valid_bitmask; + value = (int8_t)expression->value; + + if (and_op == FALSE && (mask & value) != 0 ) { + snprintf(errbuf, sizeof(errbuf), + "Invalid bit(s) 0x%x in immediate written to %s", + (mask & value), + 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); +} + +static int +is_location_address(symbol_t *sym) +{ + if (sym->type == SCBLOC || + sym->type == SRAMLOC) + return (TRUE); + return (FALSE); +} + |