1947 lines
40 KiB
Plaintext
1947 lines
40 KiB
Plaintext
%{
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/*-
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* Parser for the Aic7xxx SCSI Host adapter sequencer assembler.
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*
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* Copyright (c) 1997, 1998, 2000 Justin T. Gibbs.
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* Copyright (c) 2001, 2002 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_gram.y#29 $
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <inttypes.h>
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#include <regex.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <sys/queue.h>
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#include "aicasm.h"
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#include "aicasm_symbol.h"
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#include "aicasm_insformat.h"
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int yylineno;
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char *yyfilename;
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char stock_prefix[] = "aic_";
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char *prefix = stock_prefix;
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char *patch_arg_list;
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char *versions;
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static char errbuf[255];
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static char regex_pattern[255];
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static symbol_t *cur_symbol;
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static symbol_t *field_symbol;
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static symbol_t *scb_or_sram_symbol;
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static symtype cur_symtype;
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static symbol_ref_t accumulator;
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static symbol_ref_t mode_ptr;
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static symbol_ref_t allones;
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static symbol_ref_t allzeros;
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static symbol_ref_t none;
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static symbol_ref_t sindex;
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static int instruction_ptr;
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static int num_srams;
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static int sram_or_scb_offset;
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static int download_constant_count;
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static int in_critical_section;
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static u_int enum_increment;
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static u_int enum_next_value;
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static void process_field(unsigned int field_type, symbol_t *sym, int mask);
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static void initialize_symbol(symbol_t *symbol);
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static void add_macro_arg(const char *argtext, int position);
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static void add_macro_body(const char *bodytext);
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static void process_register(symbol_t **p_symbol);
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static void format_1_instr(int opcode, symbol_ref_t *dest,
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expression_t *immed, symbol_ref_t *src, int ret);
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static void format_2_instr(int opcode, symbol_ref_t *dest,
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expression_t *places, symbol_ref_t *src, int ret);
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static void format_3_instr(int opcode, symbol_ref_t *src,
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expression_t *immed, symbol_ref_t *address);
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static void test_readable_symbol(symbol_t *symbol);
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static void test_writable_symbol(symbol_t *symbol);
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static void type_check(symbol_t *symbol, expression_t *expression, int and_op);
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static void make_expression(expression_t *immed, int value);
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static void add_conditional(symbol_t *symbol);
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static void add_version(const char *verstring);
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static int is_download_const(expression_t *immed);
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extern int yylex (void);
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#define SRAM_SYMNAME "SRAM_BASE"
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#define SCB_SYMNAME "SCB_BASE"
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%}
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%union {
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u_int value;
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char *str;
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symbol_t *sym;
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symbol_ref_t sym_ref;
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expression_t expression;
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}
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%token T_REGISTER
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%token <value> T_CONST
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%token T_EXPORT
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%token T_DOWNLOAD
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%token T_SCB
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%token T_SRAM
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%token T_ALIAS
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%token T_SIZE
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%token T_EXPR_LSHIFT
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%token T_EXPR_RSHIFT
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%token <value> T_ADDRESS
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%token T_ACCESS_MODE
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%token T_MODES
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%token T_DEFINE
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%token T_SET_SRC_MODE
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%token T_SET_DST_MODE
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%token <value> T_MODE
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%token T_BEGIN_CS
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%token T_END_CS
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%token T_FIELD
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%token T_ENUM
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%token T_MASK
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%token <value> T_NUMBER
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%token <str> T_PATH T_STRING T_ARG T_MACROBODY
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%token <sym> T_CEXPR
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%token T_EOF T_INCLUDE T_VERSION T_PREFIX T_PATCH_ARG_LIST
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%token <value> T_SHR T_SHL T_ROR T_ROL
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%token <value> T_MVI T_MOV T_CLR T_BMOV
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%token <value> T_JMP T_JC T_JNC T_JE T_JNE T_JNZ T_JZ T_CALL
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%token <value> T_ADD T_ADC
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%token <value> T_INC T_DEC
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%token <value> T_STC T_CLC
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%token <value> T_CMP T_NOT T_XOR
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%token <value> T_TEST T_AND
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%token <value> T_OR
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%token T_RET
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%token T_NOP
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%token T_ACCUM T_ALLONES T_ALLZEROS T_NONE T_SINDEX T_MODE_PTR
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%token T_A
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%token <sym> T_SYMBOL
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%token T_NL
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%token T_IF T_ELSE T_ELSE_IF T_ENDIF
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%type <sym_ref> reg_symbol address destination source opt_source
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%type <expression> expression immediate immediate_or_a
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%type <value> export ret f1_opcode f2_opcode jmp_jc_jnc_call jz_jnz je_jne
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%type <value> mode_value mode_list macro_arglist
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%left '|'
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%left '&'
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%left T_EXPR_LSHIFT T_EXPR_RSHIFT
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%left '+' '-'
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%left '*' '/'
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%right '~'
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%nonassoc UMINUS
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%%
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program:
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include
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| program include
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| prefix
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| program prefix
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| patch_arg_list
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| program patch_arg_list
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| version
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| program version
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| register
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| program register
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| constant
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| program constant
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| macrodefn
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| program macrodefn
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| scratch_ram
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| program scratch_ram
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| scb
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| program scb
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| label
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| program label
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| set_src_mode
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| program set_src_mode
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| set_dst_mode
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| program set_dst_mode
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| critical_section_start
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| program critical_section_start
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| critical_section_end
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| program critical_section_end
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| conditional
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| program conditional
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| code
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| program code
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;
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include:
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T_INCLUDE '<' T_PATH '>'
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{
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include_file($3, BRACKETED_INCLUDE);
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}
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| T_INCLUDE '"' T_PATH '"'
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{
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include_file($3, QUOTED_INCLUDE);
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}
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;
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prefix:
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T_PREFIX '=' T_STRING
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{
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if (prefix != stock_prefix)
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stop("Prefix multiply defined",
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EX_DATAERR);
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prefix = strdup($3);
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if (prefix == NULL)
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stop("Unable to record prefix", EX_SOFTWARE);
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}
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;
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patch_arg_list:
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T_PATCH_ARG_LIST '=' T_STRING
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{
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if (patch_arg_list != NULL)
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stop("Patch argument list multiply defined",
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EX_DATAERR);
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patch_arg_list = strdup($3);
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if (patch_arg_list == NULL)
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stop("Unable to record patch arg list", EX_SOFTWARE);
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}
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;
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version:
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T_VERSION '=' T_STRING
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{ add_version($3); }
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;
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register:
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T_REGISTER { cur_symtype = REGISTER; } reg_definition
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;
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reg_definition:
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T_SYMBOL '{'
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{
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if ($1->type != UNINITIALIZED) {
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stop("Register multiply defined", EX_DATAERR);
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/* NOTREACHED */
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}
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cur_symbol = $1;
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cur_symbol->type = cur_symtype;
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initialize_symbol(cur_symbol);
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}
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reg_attribute_list
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'}'
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{
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/*
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* Default to allowing everything in for registers
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* with no bit or mask definitions.
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*/
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if (cur_symbol->info.rinfo->valid_bitmask == 0)
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cur_symbol->info.rinfo->valid_bitmask = 0xFF;
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if (cur_symbol->info.rinfo->size == 0)
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cur_symbol->info.rinfo->size = 1;
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/*
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* This might be useful for registers too.
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*/
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if (cur_symbol->type != REGISTER) {
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if (cur_symbol->info.rinfo->address == 0)
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cur_symbol->info.rinfo->address =
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sram_or_scb_offset;
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sram_or_scb_offset +=
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cur_symbol->info.rinfo->size;
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}
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cur_symbol = NULL;
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}
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;
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reg_attribute_list:
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reg_attribute
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| reg_attribute_list reg_attribute
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;
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reg_attribute:
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reg_address
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| size
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| access_mode
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| modes
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| field_defn
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| enum_defn
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| mask_defn
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| alias
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| accumulator
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| mode_pointer
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| allones
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| allzeros
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| none
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| sindex
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;
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reg_address:
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T_ADDRESS T_NUMBER
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{
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cur_symbol->info.rinfo->address = $2;
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}
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;
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size:
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T_SIZE T_NUMBER
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{
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cur_symbol->info.rinfo->size = $2;
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if (scb_or_sram_symbol != NULL) {
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u_int max_addr;
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u_int sym_max_addr;
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max_addr = scb_or_sram_symbol->info.rinfo->address
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+ scb_or_sram_symbol->info.rinfo->size;
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sym_max_addr = cur_symbol->info.rinfo->address
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+ cur_symbol->info.rinfo->size;
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if (sym_max_addr > max_addr)
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stop("SCB or SRAM space exhausted", EX_DATAERR);
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}
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}
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;
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access_mode:
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T_ACCESS_MODE T_MODE
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{
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cur_symbol->info.rinfo->mode = $2;
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}
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;
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modes:
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T_MODES mode_list
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{
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cur_symbol->info.rinfo->modes = $2;
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}
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;
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mode_list:
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mode_value
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{
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$$ = $1;
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}
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| mode_list ',' mode_value
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{
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$$ = $1 | $3;
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}
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;
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mode_value:
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T_NUMBER
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{
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if ($1 > 4) {
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stop("Valid register modes range between 0 and 4.",
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EX_DATAERR);
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/* NOTREACHED */
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}
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$$ = (0x1 << $1);
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}
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| T_SYMBOL
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{
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symbol_t *symbol;
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symbol = $1;
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if (symbol->type != CONST) {
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stop("Only \"const\" symbols allowed in "
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"mode definitions.", EX_DATAERR);
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/* NOTREACHED */
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}
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if (symbol->info.cinfo->value > 4) {
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stop("Valid register modes range between 0 and 4.",
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EX_DATAERR);
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/* NOTREACHED */
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}
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$$ = (0x1 << symbol->info.cinfo->value);
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}
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;
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field_defn:
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T_FIELD
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{
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field_symbol = NULL;
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enum_next_value = 0;
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enum_increment = 1;
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}
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'{' enum_entry_list '}'
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| T_FIELD T_SYMBOL expression
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{
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process_field(FIELD, $2, $3.value);
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field_symbol = $2;
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enum_next_value = 0;
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enum_increment = 0x01 << (ffs($3.value) - 1);
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}
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'{' enum_entry_list '}'
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| T_FIELD T_SYMBOL expression
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{
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process_field(FIELD, $2, $3.value);
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}
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;
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enum_defn:
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T_ENUM
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{
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field_symbol = NULL;
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enum_next_value = 0;
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enum_increment = 1;
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}
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'{' enum_entry_list '}'
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| T_ENUM T_SYMBOL expression
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{
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process_field(ENUM, $2, $3.value);
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field_symbol = $2;
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enum_next_value = 0;
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enum_increment = 0x01 << (ffs($3.value) - 1);
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}
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'{' enum_entry_list '}'
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;
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enum_entry_list:
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enum_entry
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| enum_entry_list ',' enum_entry
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;
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enum_entry:
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T_SYMBOL
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{
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process_field(ENUM_ENTRY, $1, enum_next_value);
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enum_next_value += enum_increment;
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}
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| T_SYMBOL expression
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{
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process_field(ENUM_ENTRY, $1, $2.value);
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enum_next_value = $2.value + enum_increment;
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}
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;
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mask_defn:
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T_MASK T_SYMBOL expression
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{
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process_field(MASK, $2, $3.value);
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}
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;
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alias:
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T_ALIAS T_SYMBOL
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{
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if ($2->type != UNINITIALIZED) {
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stop("Re-definition of register alias",
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EX_DATAERR);
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/* NOTREACHED */
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}
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$2->type = ALIAS;
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initialize_symbol($2);
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$2->info.ainfo->parent = cur_symbol;
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}
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;
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accumulator:
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T_ACCUM
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{
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if (accumulator.symbol != NULL) {
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stop("Only one accumulator definition allowed",
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EX_DATAERR);
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/* NOTREACHED */
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}
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accumulator.symbol = cur_symbol;
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}
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;
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mode_pointer:
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T_MODE_PTR
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{
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if (mode_ptr.symbol != NULL) {
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stop("Only one mode pointer definition allowed",
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EX_DATAERR);
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/* NOTREACHED */
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}
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mode_ptr.symbol = cur_symbol;
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}
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;
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allones:
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T_ALLONES
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{
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if (allones.symbol != NULL) {
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stop("Only one definition of allones allowed",
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EX_DATAERR);
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/* NOTREACHED */
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}
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allones.symbol = cur_symbol;
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}
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;
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allzeros:
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T_ALLZEROS
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{
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if (allzeros.symbol != NULL) {
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stop("Only one definition of allzeros allowed",
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EX_DATAERR);
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/* NOTREACHED */
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}
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allzeros.symbol = cur_symbol;
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}
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;
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none:
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T_NONE
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{
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if (none.symbol != NULL) {
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stop("Only one definition of none allowed",
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EX_DATAERR);
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/* NOTREACHED */
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}
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none.symbol = cur_symbol;
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}
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;
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sindex:
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T_SINDEX
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{
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if (sindex.symbol != NULL) {
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stop("Only one definition of sindex allowed",
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EX_DATAERR);
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/* NOTREACHED */
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}
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sindex.symbol = cur_symbol;
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}
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;
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expression:
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expression '|' expression
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{
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$$.value = $1.value | $3.value;
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symlist_merge(&$$.referenced_syms,
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&$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 */
|
|
}
|
|
$$ = $1 + 1;
|
|
add_macro_arg($3, $1);
|
|
}
|
|
;
|
|
|
|
scratch_ram:
|
|
T_SRAM '{'
|
|
{
|
|
snprintf(errbuf, sizeof(errbuf), "%s%d", SRAM_SYMNAME,
|
|
num_srams);
|
|
cur_symbol = symtable_get(SRAM_SYMNAME);
|
|
cur_symtype = SRAMLOC;
|
|
cur_symbol->type = SRAMLOC;
|
|
initialize_symbol(cur_symbol);
|
|
}
|
|
reg_address
|
|
{
|
|
sram_or_scb_offset = cur_symbol->info.rinfo->address;
|
|
}
|
|
size
|
|
{
|
|
scb_or_sram_symbol = cur_symbol;
|
|
}
|
|
scb_or_sram_attributes
|
|
'}'
|
|
{
|
|
cur_symbol = NULL;
|
|
scb_or_sram_symbol = NULL;
|
|
}
|
|
;
|
|
|
|
scb:
|
|
T_SCB '{'
|
|
{
|
|
cur_symbol = symtable_get(SCB_SYMNAME);
|
|
cur_symtype = SCBLOC;
|
|
if (cur_symbol->type != UNINITIALIZED) {
|
|
stop("Only one SRAM definition allowed",
|
|
EX_SOFTWARE);
|
|
/* NOTREACHED */
|
|
}
|
|
cur_symbol->type = SCBLOC;
|
|
initialize_symbol(cur_symbol);
|
|
/* 64 bytes of SCB space */
|
|
cur_symbol->info.rinfo->size = 64;
|
|
}
|
|
reg_address
|
|
{
|
|
sram_or_scb_offset = cur_symbol->info.rinfo->address;
|
|
}
|
|
size
|
|
{
|
|
scb_or_sram_symbol = cur_symbol;
|
|
}
|
|
scb_or_sram_attributes
|
|
'}'
|
|
{
|
|
cur_symbol = NULL;
|
|
scb_or_sram_symbol = NULL;
|
|
}
|
|
;
|
|
|
|
scb_or_sram_attributes:
|
|
/* NULL definition is okay */
|
|
| modes
|
|
| scb_or_sram_reg_list
|
|
| modes scb_or_sram_reg_list
|
|
;
|
|
|
|
scb_or_sram_reg_list:
|
|
reg_definition
|
|
| scb_or_sram_reg_list reg_definition
|
|
;
|
|
|
|
reg_symbol:
|
|
T_SYMBOL
|
|
{
|
|
process_register(&$1);
|
|
$$.symbol = $1;
|
|
$$.offset = 0;
|
|
}
|
|
| T_SYMBOL '[' T_SYMBOL ']'
|
|
{
|
|
process_register(&$1);
|
|
if ($3->type != CONST) {
|
|
stop("register offset must be a constant", EX_DATAERR);
|
|
/* NOTREACHED */
|
|
}
|
|
if (($3->info.cinfo->value + 1) > (unsigned)$1->info.rinfo->size) {
|
|
stop("Accessing offset beyond range of register",
|
|
EX_DATAERR);
|
|
/* NOTREACHED */
|
|
}
|
|
$$.symbol = $1;
|
|
$$.offset = $3->info.cinfo->value;
|
|
}
|
|
| T_SYMBOL '[' T_NUMBER ']'
|
|
{
|
|
process_register(&$1);
|
|
if (($3 + 1) > (unsigned)$1->info.rinfo->size) {
|
|
stop("Accessing offset beyond range of register",
|
|
EX_DATAERR);
|
|
/* NOTREACHED */
|
|
}
|
|
$$.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 == SCOPE_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(unsigned 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 __unused)
|
|
{
|
|
struct macro_arg *marg;
|
|
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 >= (int)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;
|
|
uint8_t invalid_bits;
|
|
|
|
and_op = FALSE;
|
|
if (opcode == AIC_OP_AND
|
|
|| opcode == AIC_OP_BMOV
|
|
|| opcode == AIC_OP_JE
|
|
|| opcode == AIC_OP_JNE
|
|
|| opcode == AIC_OP_JNZ
|
|
|| opcode == 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.
|
|
*/
|
|
invalid_bits = expression->value & ~symbol->info.rinfo->valid_bitmask;
|
|
if (and_op == FALSE && invalid_bits != 0) {
|
|
snprintf(errbuf, sizeof(errbuf),
|
|
"Invalid bit(s) 0x%x in immediate written to %s",
|
|
invalid_bits, 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 verprefix[] = " * ";
|
|
int newlen;
|
|
int oldlen;
|
|
|
|
newlen = strlen(verstring) + strlen(verprefix);
|
|
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], verprefix);
|
|
strcpy(&versions[oldlen + strlen(verprefix)], verstring);
|
|
versions[newlen + oldlen] = '\n';
|
|
versions[newlen + oldlen + 1] = '\0';
|
|
}
|
|
|
|
static 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);
|
|
}
|