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[submodule "8086"]
path = 8086
url = https://zpc@www.codecode.net/engintime/Dream-Logic/Intel-classic-chips/8086.git
[submodule "8259A"]
path = 8259A
url = https://zpc@www.codecode.net/engintime/Dream-Logic/Intel-classic-chips/8259A.git
8086 @ 0646239b
Subproject commit 0646239b4d1645f6a0da63d7f4bb3142942e567c
8259A @ e090530d
Subproject commit e090530dbe6c8add5b683e25ea969b581be5cfca
IO/IO.dlsche 0 → 100644
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浏览文件 @ 7c300cda
# 说明
IO接口芯片地址译码模块
\ No newline at end of file
Lab004.dlproj 0 → 100644
浏览文件 @ 7c300cda
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MEM/MEM.dlsche 0 → 100644
浏览文件 @ 7c300cda
添加文件
MEM/MEM.dlsche.svg 0 → 100644
浏览文件 @ 7c300cda
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="532" y2="532"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="532">A3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="552" y2="552"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="552">A4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="572" y2="572"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="572">A5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="592" y2="592"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="592">A6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="612" y2="612"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="612">A7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="672" y2="672"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="672">D0</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="692" y2="692"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="692">D1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="712" y2="712"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="712">D2</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="732" y2="732"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="732">D3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="752" y2="752"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="752">D4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="772" y2="772"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="772">D5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="792" y2="792"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="792">D6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="812" y2="812"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="624" y="812">D7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="472" y2="472"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="472">Q0</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="492" y2="492"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="492">Q1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="512" y2="512"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="512">Q2</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="532" y2="532"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="532">Q3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="552" y2="552"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="552">Q4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="572" y2="572"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="572">Q5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="592" y2="592"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="592">Q6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="741" x2="791" y1="612" y2="612"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="708" y="612">Q7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="581" x2="541" y1="872" y2="872"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="657" y="872">^W\R</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="591" x2="541" y1="892" y2="892"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="644" y="892">CLK</text>
<rect fill="#ff8057" fill-opacity="0.5" height="490" stroke="#000000" stroke-width="5" width="150" x="591" y="442"/>
<polyline fill="none" points="591 882, 601 892, 591 902" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="1"/>
<circle cx="586" cy="872" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="90" font-weight="700" text-anchor="start" x="551" y="432">RAM</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="611" y="972">256RAM1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="472" y2="472"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="472">A0</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="502" y2="502"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="502">A1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="532" y2="532"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="532">A2</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="562" y2="562"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="562">A3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="592" y2="592"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="592">A4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="622" y2="622"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="622">A5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="652" y2="652"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="652">A6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1231" x2="1181" y1="682" y2="682"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1264" y="682">A7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="472" y2="472"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="472">D0</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="502" y2="502"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="502">D1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="532" y2="532"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="532">D2</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="562" y2="562"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="562">D3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="592" y2="592"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="592">D4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="622" y2="622"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="622">D5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="652" y2="652"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="652">D6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1381" x2="1431" y1="682" y2="682"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1348" y="682">D7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1221" x2="1181" y1="742" y2="742"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1275" y="741">^EN</text>
<rect fill="#a0c0ff" fill-opacity="0.5" height="350" stroke="#000000" stroke-width="5" width="150" x="1231" y="432"/>
<circle cx="1226" cy="742" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1231" y="422">MEM_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1231" y="832">BUS_TRANS8</text>
<circle cx="521" cy="1172" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
</svg>
MEM/README.md 0 → 100644
浏览文件 @ 7c300cda
# 说明
8086 微机系统的MEM主存储器，存储指令和数据
\ No newline at end of file
MEM/dmasm.c 0 → 100644
浏览文件 @ 7c300cda
/*******************************************************************************
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
typedef unsigned char BYTE;
typedef long BOOL;
#define FALSE 0
#define TRUE 1
#define MAX_LINE_LENGTH 256 // 一行代码最多可以有多少个字符
#define MAX_LINE_COUNT 1024 // 源代码文件最多可以有多少行
#define MAX_MACHINE_CODE_BYTE_COUNT 256 // 源代码编译后最多可以有多少个字节机器码
#define MAX_SYMBOL_LENGTH 64 // 一个符号最多可以包含多少个字符
#define MAX_SYMBOL_COUNT 256 // 源代码文件中最多可以包含多少个符号
#ifndef MAX_PATH
#define MAX_PATH 256 // 文件路径最多可以包含多少个字符
#endif
// 代码行数据库。记录源代码文件中所有代码行的信息（包括注释行、空行）
struct LINE_RECORD
{
char line_string[MAX_LINE_LENGTH]; // 代码行的内容
unsigned long line_num; // 行号
unsigned long address; // 此行代码转换的机器码在映像文件中的地址（偏移）
int machine_code_count; // 此行代码转换的机器码的字节数量
unsigned long flag; // 代码行标志位，32位
};
struct LINE_RECORD line_database[MAX_LINE_COUNT] = { 0 };
int line_count = 0;
int machine_code_line_count = 0; // 记录产生了机器码的代码行的数量
// 在此定义所有的代码行标志位。注意，代码行标志位是按位或的关系。
#define LF_INSTRUCTION 0x00000001 // 代码行标志位的最低位是1，表示此行是一条指令，否则表示此行是数据
// 重定位表。如果指令中使用了标号、变量名等符号，在第一次扫描时无法确定他们的地址，需要
// 在第二次扫描时进行重定位。
struct REALLOCATE
{
unsigned long address; // 第一次扫描时，在这里记录了需要重定位的机器码的地址（偏移），
// 第二次扫描时，根据符号的地址进行重定位。
char symbol_name[MAX_SYMBOL_LENGTH]; // 需要重定位的符号名称。
int line_num; // 行号。
};
struct REALLOCATE reallocate_table[MAX_LINE_COUNT] = { 0 };
int reallocate_count = 0;
// 符号表。符号包括源代码中的标号、变量名。
struct SYMBOL
{
char name[MAX_SYMBOL_LENGTH]; // 符号名称
unsigned long address; // 符号表示的地址。重定位时需要用到。
int machine_code_count; // 符号生成的机器码的数量（以字节为单位）。
int line_num; // 行号
int ref_count; // 引用计数
};
struct SYMBOL symbol_table[MAX_SYMBOL_COUNT] = { 0 };
int symbol_count = 0;
// 汇编过程的状态
enum
{
AS_BEGIN // 起始状态。在遇到代码段名称前，处于此状态
, AS_INT_TABLE // 正在处理中断向量列表。遇到向量列表名称后，遇到代码段名称前，处于此状态
, AS_TEXT // 正在处理代码段。遇到代码段名称后，遇到数据的名称前，处于此状态
, AS_DATA // 正在处理数据段。遇到数据段名称后，处于此状态
};
unsigned long assembler_state = AS_BEGIN;
//
// 在下面定义所有的关键字
//
// 段名称
const char* int_table_section_keyword = ".int_table"; // 中断向量列表标志
const char* code_section_keyword = ".text"; // 代码段标志
char const* data_section_keyword = ".data"; // 数据段标志
// 指令名称
const char* mov_instruction_keyword = "mov";
const char* add_instruction_keyword = "add";
const char* adc_instruction_keyword = "adc";
const char* sub_instruction_keyword = "sub";
const char* sbb_instruction_keyword = "sbb";
const char* and_instruction_keyword = "and";
const char* or_instruction_keyword = "or";
const char* xor_instruction_keyword = "xor";
const char* shr_instruction_keyword = "shr";
const char* shl_instruction_keyword = "shl";
const char* rcr_instruction_keyword = "rcr";
const char* rcl_instruction_keyword = "rcl";
const char* sal_instruction_keyword = "sal";
const char* sar_instruction_keyword = "sar";
const char* rol_instruction_keyword = "rol";
const char* ror_instruction_keyword = "ror";
const char* not_instruction_keyword = "not";
const char* push_instruction_keyword = "push";
const char* pop_instruction_keyword = "pop";
const char* in_instruction_keyword = "in";
const char* out_instruction_keyword = "out";
const char* call_instruction_keyword = "call";
const char* ret_instruction_keyword = "ret";
const char* int_instruction_keyword = "int";
const char* iret_instruction_keyword = "iret";
const char* inc_instruction_keyword = "inc";
const char* dec_instruction_keyword = "dec";
const char* lea_instruction_keyword = "lea";
const char* cmp_instruction_keyword = "cmp";
const char* nop_instruction_keyword = "nop";
const char* cli_instruction_keyword = "cli";
const char* sti_instruction_keyword = "sti";
const char* jmp_instruction_keyword = "jmp";
const char* jc_instruction_keyword = "jc";
const char* jz_instruction_keyword = "jz";
const char* je_instruction_keyword = "je";
const char* jne_instruction_keyword = "jne";
const char* jnz_instruction_keyword = "jnz";
// 通用寄存器名称
const char* al_register_keyword = "al";
const char* bl_register_keyword = "bl";
const char* cl_register_keyword = "cl";
const char* dl_register_keyword = "dl";
const char* sp_register_keyword = "sp";
const char* bp_register_keyword = "bp";
const char* si_register_keyword = "si";
const char* di_register_keyword = "di";
const char* cs_register_keyword = "cs";
const char* ds_register_keyword = "ds";
const char* ss_register_keyword = "ss";
const char* es_register_keyword = "es";
const char* al_register_indirect_keyword = "[al]";
const char* bl_register_indirect_keyword = "[bl]";
const char* cl_register_indirect_keyword = "[cl]";
const char* dl_register_indirect_keyword = "[dl]";
const char* sp_register_indirect_keyword = "[sp]";
const char* bp_register_indirect_keyword = "[bp]";
const char* si_register_indirect_keyword = "[si]";
const char* di_register_indirect_keyword = "[di]";
const char* cs_register_indirect_keyword = "[cs]";
const char* ds_register_indirect_keyword = "[ds]";
const char* ss_register_indirect_keyword = "[ss]";
const char* es_register_indirect_keyword = "[es]";
const char* delimit_char = "\n\t\r "; // 需要忽略的空白字符
const char* delimit_char_comma = "\n\t\r, "; // 需要忽略的空白字符，包括英文逗号
// 汇编产生的机器码
#define MAX_MACHINE_CODE 1024
BYTE machine_code[MAX_MACHINE_CODE];
unsigned long machine_code_address = 0;
unsigned long machine_code_old_address = 0;
const char* assembly_file_name = NULL; // 汇编文件路径
const char* target_file_name = NULL; // 目标文件路径
const char* list_file_name = NULL; // 列表文件路径
const char* dbg_file_name = NULL; // 调试信息文件路径
const unsigned long dbg_file_magic = 58;
const unsigned long dbg_file_version = 1;
// 输出汇编过程中发现的语法错误信息
void error_msg(const char* error_msg, int line_num)
{
if (line_num >= 1)
{
printf("%s:%d: error: %s\n", assembly_file_name, line_num, error_msg);
}
else
{
printf("%s: error: %s\n", assembly_file_name, error_msg);
}
exit(1);
}
char formated_msg[1024]; // 将格式化后的错误信息放在此字符串中。
void error_msg_miss_op(const char* instruction_name, int line_num)
{
sprintf(formated_msg, "%s 指令缺少操作数。", instruction_name);
error_msg(formated_msg, line_num);
}
void error_msg_wrong_op(const char* instruction_name, int line_num)
{
sprintf(formated_msg, "%s 指令不支持这样的操作数。", instruction_name);
error_msg(formated_msg, line_num);
}
void error_msg_same_symbol(const char* symbol, int line_num, int ref_line_num)
{
sprintf(formated_msg, "符号 %s 重复定义。参见第 %d 行。", symbol, ref_line_num);
error_msg(formated_msg, line_num);
}
void error_msg_keyword_symbol(const char* symbol, int line_num)
{
sprintf(formated_msg, "不能使用保留的关键字 %s 作为符号名称。", symbol);
error_msg(formated_msg, line_num);
}
void error_msg_keyword_int_vector(const char* vector, int line_num)
{
sprintf(formated_msg, "不能使用保留的关键字 %s 作为中断向量名称。", vector);
error_msg(formated_msg, line_num);
}
void error_msg_wrong_data(const char* data, int line_num)
{
sprintf(formated_msg, "%s 不是有效的数据。", data);
error_msg(formated_msg, line_num);
}
// 输出汇编过程中发现的警告信息
void warning_msg(const char* warning_msg, int line_num)
{
if (line_num >= 1)
{
printf("%s:%d: warning: %s\n", assembly_file_name, line_num, warning_msg);
}
else
{
printf("%s: warning: %s\n", assembly_file_name, warning_msg);
}
}
void warning_msg_invalid_line(int line_num)
{
warning_msg("忽略无效的代码行。", line_num);
}
void warning_msg_unref_symbol(const char* symbol, int line_num)
{
sprintf(formated_msg, "符号 %s 未被引用。", symbol);
warning_msg(formated_msg, line_num);
}
// 判断是否是立即数。如果是数字开头，或者是负号开头的，就认为是立即数。
int is_immediate(const char* token)
{
return (isdigit(token[0]) || '-' == token[0]) ? 1 : 0;
}
// 判断是否是立即数地址。类如，[4]
int is_immediate_address(const char* token)
{
// 最后一个字符必须是"]"
if (token[strlen(token) - 1] != ']')
{
return 0;
}
// 第一个字符必须是"["
if (token[0] != '[')
{
return 0;
}
// 后面的字符必须是数字开头
return (isdigit(token[1]) || ' ' == token[1]) ? 1 : 0;
}
// 判断是否是主存数据
int is_main_memory(const char* token)
{
return (isdigit(token[0]) || '@' == token[0]) ? 1 : 0;
}
// 指令操作数类型
enum
{
OT_REGISTER_AL // al
, OT_REGISTER_BL // bl
, OT_REGISTER_CL // cl
, OT_REGISTER_DL // dl
, OT_REGISTER_SP // sp
, OT_REGISTER_BP // bp
, OT_REGISTER_SI // si
, OT_REGISTER_DI // di
, OT_REGISTER_CS // cs
, OT_REGISTER_DS // ds
, OT_REGISTER_SS // ss
, OT_REGISTER_ES // es
, OT_REGISTER_AL_INDIRECT // [al]
, OT_REGISTER_BL_INDIRECT // [bl]
, OT_REGISTER_CL_INDIRECT // [cl]
, OT_REGISTER_DL_INDIRECT // [dl]
, OT_REGISTER_SP_INDIRECT // [sp]
, OT_REGISTER_BP_INDIRECT // [bp]
, OT_REGISTER_SI_INDIRECT // [si]
, OT_REGISTER_DI_INDIRECT // [di]
, OT_REGISTER_CS_INDIRECT // [cs]
, OT_REGISTER_DS_INDIRECT // [ds]
, OT_REGISTER_SS_INDIRECT // [ss]
, OT_REGISTER_ES_INDIRECT // [es]
, OT_IMMEDIATE // 立即数
, OT_SYMBOL // 符号
};
// 得到指令操作数的类型
unsigned long get_operand_type(const char* op)
{
unsigned long op_type;
if (stricmp(op, al_register_keyword) == 0)
{
op_type = OT_REGISTER_AL;
}
else if (stricmp(op, bl_register_keyword) == 0)
{
op_type = OT_REGISTER_BL;
}
else if (stricmp(op, cl_register_keyword) == 0)
{
op_type = OT_REGISTER_CL;
}
else if (stricmp(op, dl_register_keyword) == 0)
{
op_type = OT_REGISTER_DL;
}
else if (stricmp(op, sp_register_keyword) == 0)
{
op_type = OT_REGISTER_SP;
}
else if (stricmp(op, bp_register_keyword) == 0)
{
op_type = OT_REGISTER_BP;
}
else if (stricmp(op, si_register_keyword) == 0)
{
op_type = OT_REGISTER_SI;
}
else if (stricmp(op, di_register_keyword) == 0)
{
op_type = OT_REGISTER_DI;
}
else if (stricmp(op, cs_register_keyword) == 0)
{
op_type = OT_REGISTER_CS;
}
else if (stricmp(op, ds_register_keyword) == 0)
{
op_type = OT_REGISTER_DS;
}
else if (stricmp(op, ss_register_keyword) == 0)
{
op_type = OT_REGISTER_SS;
}
else if (stricmp(op, es_register_keyword) == 0)
{
op_type = OT_REGISTER_ES;
}
else if (stricmp(op, al_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_AL_INDIRECT;
}
else if (stricmp(op, bl_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_BL_INDIRECT;
}
else if (stricmp(op, cl_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_CL_INDIRECT;
}
else if (stricmp(op, dl_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_DL_INDIRECT;
}
else if (stricmp(op, sp_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_SP_INDIRECT;
}
else if (stricmp(op, bp_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_BP_INDIRECT;
}
else if (stricmp(op, si_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_SI_INDIRECT;
}
else if (stricmp(op, di_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_DI_INDIRECT;
}
else if (stricmp(op, cs_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_CS_INDIRECT;
}
else if (stricmp(op, ds_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_DS_INDIRECT;
}
else if (stricmp(op, ss_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_SS_INDIRECT;
}
else if (stricmp(op, es_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_ES_INDIRECT;
}
else if (is_immediate(op))
{
op_type = OT_IMMEDIATE;
}
else
{
op_type = OT_SYMBOL;
}
return op_type;
}
// 根据寄存器，得到一个机器码
char get_machine_code_from_r(unsigned long op_type)
{
return (char)(op_type - OT_REGISTER_AL);
}
// 根据通用寄存器和机器码的基础值，得到一个机器码
char get_machine_code_from_r_indirect(unsigned long op_type)
{
return (char)(op_type - OT_REGISTER_AL_INDIRECT);
}
// 根据立即数得到一个机器码。注意，允许使用负数，所以返回值是带符号的 8 位 char。
char get_machine_code_from_immediate(const char* immediate)
{
char* end;
int start_index = (immediate[0] == '-' ? 1 : 0);
int base = (immediate[start_index] == '0' && (immediate[start_index + 1] == 'x' || immediate[start_index + 1] == 'X')) ? 16 : 10;
return (char)strtol(immediate, &end, base);
}
// 根据立即数地址得到一个机器码。首先去除中括号，再将立即数转换为带符号的8位字符。
char get_machine_code_from_immediate_address(const char* immediate)
{
char d[7];
int i = 0;
int t = strlen(immediate);
for (; i < t - 2; i++)
{
d[i] = immediate[i + 1];
}
char* temp;
int base = (immediate[1] == '0' && (immediate[2] == 'x' || immediate[2] == 'X')) ? 16 : 10;
return (char)strtol(d, &temp, base);
}
// 向重定位表中添加一个重定位信息
void add_reallocate(const char* symbol, int line_num)
{
reallocate_table[reallocate_count].address = machine_code_address;
strcpy(reallocate_table[reallocate_count].symbol_name, symbol);
reallocate_table[reallocate_count].line_num = line_num;
reallocate_count++;
}
//////////////////////////////////////////////////////////////////////////////////////
// 汇编指令编译函数
// mov op1, op2
//
void parse_mov(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(mov_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_ES)
&& OT_IMMEDIATE == op2_type)
{
// mov reg, immediate
// 操作码
machine_code[machine_code_address] = 0x01;
machine_code_address++;
// reg为目的寄存器操作数
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数机器码
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_ES)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_ES))
{
// mov reg, reg
// 操作码
machine_code[machine_code_address] = 0x02;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_ES) && OT_SYMBOL == op2_type)
{
// mov reg, symbol
// 操作码
machine_code[machine_code_address] = 0x03;
machine_code_address++;
// 目的操作数机器码
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_ES)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_ES_INDIRECT))
{
// mov reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x04;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL_INDIRECT && op1_type <= OT_REGISTER_ES_INDIRECT)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_ES))
{
// mov [reg], reg
// 操作码
machine_code[machine_code_address] = 0x05;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r_indirect(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL_INDIRECT && op1_type <= OT_REGISTER_ES_INDIRECT) && OT_IMMEDIATE == op2_type)
{
// mov [reg], immediate
// 操作码
machine_code[machine_code_address] = 0x06;
machine_code_address++;
// 目的操作数
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op1_type);
machine_code_address++;
// 立即数机器码
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if (OT_SYMBOL == op1_type && (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_ES))
{
// mov symbol, reg
machine_code[machine_code_address] = 0x07;
machine_code_address++;
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
machine_code[machine_code_address] = rs;
machine_code_address++;
// 重定位
add_reallocate(op1, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(mov_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////////////////
// 加法指令
// add op1, op2
void parse_add(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(add_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// add reg, reg
// 操作码
machine_code[machine_code_address] = 0x08;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// add reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x0a;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// add reg, symbol
// 操作码
machine_code[machine_code_address] = 0x0c;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// add reg, immediate
machine_code[machine_code_address] = 0x0e;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(add_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
// 带进位的加法指令
// adc op1, op2
void parse_adc(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(adc_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// adc reg, reg
// 操作码
machine_code[machine_code_address] = 0x10;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// adc reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x12;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// adc reg, symbol
// 操作码
machine_code[machine_code_address] = 0x14;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// adc reg, immediate
machine_code[machine_code_address] = 0x16;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(adc_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
////////////////////////////////////////////////////////////////////////////////////////////
// 减法指令
// sub op1, op2
void parse_sub(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(sub_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// sub reg, reg
// 操作码
machine_code[machine_code_address] = 0x18;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// sub reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x1a;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// sub reg, symbol
// 操作码
machine_code[machine_code_address] = 0x1c;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// sub reg, immediate
machine_code[machine_code_address] = 0x1e;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(sub_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 借位减法指令
// sbb op1, op2
void parse_sbb(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(sbb_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// sbb reg, reg
// 操作码
machine_code[machine_code_address] = 0x20;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// sbb reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x22;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// sbb reg, symbol
// 操作码
machine_code[machine_code_address] = 0x24;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// sbb reg, immediate
machine_code[machine_code_address] = 0x26;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(sbb_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////////////////////////////
// 增减1指令
// inc reg
void parse_inc(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(inc_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (op_type >= OT_REGISTER_AL && op_type <= OT_REGISTER_DI)
{
//
machine_code[machine_code_address] = 0x78;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op_type);
machine_code_address++;
}
else
{
error_msg_wrong_op(inc_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// dec reg
void parse_dec(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(dec_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (op_type >= OT_REGISTER_AL && op_type <= OT_REGISTER_DI)
{
//
machine_code[machine_code_address] = 0x79;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op_type);
machine_code_address++;
}
else
{
error_msg_wrong_op(dec_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////////////////////////////////////
// 按位与指令
// and op1, op2
void parse_and(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(and_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// and reg, reg
// 操作码
machine_code[machine_code_address] = 0x2a;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// and reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x2c;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// and reg, symbol
// 操作码
machine_code[machine_code_address] = 0x2e;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// and reg, immediate
machine_code[machine_code_address] = 0x30;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(and_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////////////////////////
// 按位或指令
// or op1, op2
void parse_or(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(or_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// or reg, reg
// 操作码
machine_code[machine_code_address] = 0x32;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// or reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x34;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// or reg, symbol
// 操作码
machine_code[machine_code_address] = 0x36;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// or reg, immediate
machine_code[machine_code_address] = 0x38;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(or_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////////////////////////
// 按位异或指令
// xor op1, op2
void parse_xor(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(xor_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// xor reg, reg
// 操作码
machine_code[machine_code_address] = 0x3a;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL_INDIRECT && op2_type <= OT_REGISTER_DI_INDIRECT))
{
// xor reg, [reg]
// 操作码
machine_code[machine_code_address] = 0x3c;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r_indirect(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// xor reg, symbol
// 操作码
machine_code[machine_code_address] = 0x3e;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// xor reg, immediate
machine_code[machine_code_address] = 0x40;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(xor_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
////////////////////////////////////////////////////
//
// push reg
void parse_push(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char_comma);
if (NULL == op)
{
error_msg_miss_op(push_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (op_type >= OT_REGISTER_AL && op_type <= OT_REGISTER_ES)
{
machine_code[machine_code_address] = 0x42;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op_type);
machine_code_address++;
}
else
{
error_msg_wrong_op(push_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////
//
// pop reg
void parse_pop(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char_comma);
if (NULL == op)
{
error_msg_miss_op(pop_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (op_type >= OT_REGISTER_AL && op_type <= OT_REGISTER_ES)
{
machine_code[machine_code_address] = 0x43;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op_type);
machine_code_address++;
}
else
{
error_msg_wrong_op(pop_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////////////////
//
// not reg
void parse_not(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(not_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
// 目标操作数只能是通用寄存器
if (op_type >= OT_REGISTER_AL && op_type <= OT_REGISTER_DI)
{
machine_code[machine_code_address] = 0x44;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op_type);
machine_code_address++;
}
else
{
error_msg_wrong_op(not_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////////////
//
// cmp op1, op2
void parse_cmp(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(cmp_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_IMMEDIATE == op2_type)
{
// cmp reg, immediate
machine_code[machine_code_address] = 0x47;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 立即数
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// cmp reg, reg
// 操作码
machine_code[machine_code_address] = 0x49;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(xor_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////
//
// 接口访问指令
// in op1, op2
void parse_in(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(in_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if (OT_REGISTER_AL == op1_type && OT_IMMEDIATE == op2_type)
{
// in al, imm
machine_code[machine_code_address] = 0x4b;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if (OT_REGISTER_AL == op1_type && OT_REGISTER_DL == op2_type)
{
// in al, dl
machine_code[machine_code_address] = 0x4c;
machine_code_address++;
//
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
rd = get_machine_code_from_r(op1_type);
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(in_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// out op1, op2
void parse_out(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(out_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if (OT_REGISTER_DL == op1_type && OT_REGISTER_AL == op2_type)
{
// out dl, al
machine_code[machine_code_address] = 0x4d;
machine_code_address++;
//
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
rd = get_machine_code_from_r(op1_type);
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else if (OT_IMMEDIATE == op1_type && OT_REGISTER_AL == op2_type)
{
// out imm, al
machine_code[machine_code_address] = 0x4e;
machine_code_address++;
//
machine_code[machine_code_address] = get_machine_code_from_r(op2_type);
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op1);
machine_code_address++;
}
else
{
error_msg_wrong_op(out_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
///////////////////////////////////////////////////////
//
// lea reg, symbol
void parse_lea(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(lea_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI) && OT_SYMBOL == op2_type)
{
// lea reg, symbol
machine_code[machine_code_address] = 0x4f;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_r(op1_type);
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(lea_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////
//
// jz/je symbol
void parse_jz(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(jz_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (OT_SYMBOL == op_type)
{
// jz symbol
machine_code[machine_code_address] = 0x54;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jz_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////
//
// jnz/jne symbol
void parse_jnz(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(jnz_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (OT_SYMBOL == op_type)
{
machine_code[machine_code_address] = 0x55;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jnz_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////
//
// jc symbol
void parse_jc(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(jc_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (OT_SYMBOL == op_type)
{
machine_code[machine_code_address] = 0x56;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jc_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////
// jmp symbol
void parse_jmp(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(jmp_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (OT_SYMBOL == op_type)
{
// jmp symbol
machine_code[machine_code_address] = 0x57;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jmp_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
////////////////////////////////////////////////////////////////////////////////////
//
// int immediate
void parse_int(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(int_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (OT_IMMEDIATE == op_type)
{
// int immediate
machine_code[machine_code_address] = 0x5a;
machine_code_address++;
//
machine_code[machine_code_address] = 0xB4;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op);
machine_code_address++;
}
else
{
error_msg_wrong_op(int_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// iret
void parse_iret(int line_num)
{
machine_code[machine_code_address] = 0x5d;
machine_code_address++;
//
machine_code[machine_code_address] = 0x44;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////
//
// 移位指令
// sal op1, op2
void parse_sal(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(sal_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x5f;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(sal_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// sar op1, op2
void parse_sar(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(sar_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x61;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(sar_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// shl op1, op2
void parse_shl(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(shl_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x63;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(shl_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// shr op1, op2
void parse_shr(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(shr_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x65;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(shr_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// rol op1, op2
void parse_rol(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(rol_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x67;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(rol_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// ror op1, op2
void parse_ror(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(ror_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x69;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(ror_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// rcl op1, op2
void parse_rcl(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(rcl_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x6b;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(rcl_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// rcr op1, op2
void parse_rcr(int line_num)
{
char *op1, *op2;
char rs, rd;
unsigned long op1_type, op2_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if (NULL == op1 || NULL == op2)
{
error_msg_miss_op(rcr_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if ((op1_type >= OT_REGISTER_AL && op1_type <= OT_REGISTER_DI)
&& (op2_type >= OT_REGISTER_AL && op2_type <= OT_REGISTER_DI))
{
// 操作码
machine_code[machine_code_address] = 0x6d;
machine_code_address++;
// 源操作数寄存器rs
rs = get_machine_code_from_r(op2_type);
rs = rs << 4;
// 目的操作数
rd = get_machine_code_from_r(op1_type);
// 操作数机器码
machine_code[machine_code_address] = rs | rd;
machine_code_address++;
}
else
{
error_msg_wrong_op(rcr_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////////////////
//
// nop
void parse_nop(int line_num)
{
machine_code[machine_code_address] = 0x6f;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//////////////////////////////////////////////////////////////////////////
//
// call symbol
void parse_call(int line_num)
{
char *op;
unsigned long op_type;
if (assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if (NULL == op)
{
error_msg_miss_op(call_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if (OT_SYMBOL == op_type)
{
// call symbol
machine_code[machine_code_address] = 0x71;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(call_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////////////////
//
// ret
void parse_ret(int line_num)
{
machine_code[machine_code_address] = 0x73;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////////////////
//
// cli
void parse_cli(int line_num)
{
machine_code[machine_code_address] = 0x74;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
/////////////////////////////////////////////////////////////////////////////
//
// sti
void parse_sti(int line_num)
{
machine_code[machine_code_address] = 0x75;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// 向符号表中添加一个符号
void add_symbol(const char* symbol, int line_num)
{
int i;
// 符号名称不能重复
for (i = 0; i < symbol_count; i++)
{
if (stricmp(symbol, symbol_table[i].name) == 0)
{
error_msg_same_symbol(symbol, line_num, symbol_table[i].line_num);
}
}
// 符号数量有限
if (symbol_count == MAX_SYMBOL_COUNT)
{
sprintf(formated_msg, "定义了太多的符号。最多可以定义 %d 个符号。", MAX_SYMBOL_COUNT);
error_msg(formated_msg, line_num);
}
// 添加符号
strcpy(symbol_table[symbol_count].name, symbol);
symbol_table[symbol_count].address = machine_code_address;
symbol_table[symbol_count].line_num = line_num;
symbol_count++;
}
// 解析符号
void parse_symbol(const char* symbol_with_colon, int line_num)
{
char symbol[MAX_SYMBOL_LENGTH];
char* token;
// 删除符号末尾的冒号
strcpy(symbol, symbol_with_colon);
symbol[strlen(symbol) - 1] = 0;
if (AS_TEXT == assembler_state)
{
// 代码段中的标号作为符号。记录到符号表中，不产生机器码。
add_symbol(symbol, line_num);
// 标号必须单独占一行，否则报错
if (strtok(NULL, delimit_char) != NULL)
{
error_msg("标号必须单独占用一行。", line_num);
}
}
else if (AS_DATA == assembler_state)
{
// 数据段中的变量作为符号。一个变量可以包含多个字节数据。记录到符号表中，产生机器码。
add_symbol(symbol, line_num);
while ((token = strtok(NULL, delimit_char)) != NULL)
{
if (!is_immediate(token))
{
error_msg_wrong_data(token, line_num);
}
machine_code[machine_code_address] = get_machine_code_from_immediate(token);
machine_code_address++;
symbol_table[symbol_count - 1].machine_code_count++;
}
}
else
{
warning_msg_invalid_line(line_num);
}
}
// 解析中断向量
void parse_int_vector(const char* symbol_with_colon, int line_num)
{
char symbol[MAX_SYMBOL_LENGTH];
char* token;
if (AS_INT_TABLE == assembler_state)
{
// 重定位
add_reallocate(symbol_with_colon, line_num);
machine_code_address++;
// 中断向量必须单独占一行，否则报错
if (strtok(NULL, delimit_char) != NULL)
{
error_msg("中断向量必须单独占用一行。", line_num);
}
}
}
// 解析中断向量表开始标志
void parse_int_table_section_keyword(int line_num)
{
// 中断向量表标志
if (AS_TEXT == assembler_state)
{
error_msg("中断向量表不能定义在代码段的后面。", line_num);
}
else if (AS_INT_TABLE == assembler_state)
{
error_msg("定义了重复的中断向量列表。", line_num);
}
assembler_state = AS_INT_TABLE;
}
// 解析代码段开始标志
void parse_code_section_keyword(int line_num)
{
// 代码段标志
if (AS_DATA == assembler_state)
{
error_msg("代码段不能定义在数据段的后面。", line_num);
}
else if (AS_TEXT == assembler_state)
{
error_msg("定义了重复的代码段。", line_num);
}
//若当前地址小于0x10，则补充空行
for (; machine_code_address < 0x10;)
{
line_database[line_count].line_num = line_num;
line_database[line_count].address = machine_code_address;
machine_code_address++;
machine_code_old_address++;
}
// 代码段的起始地址为0x10
assembler_state = AS_TEXT;
}
// 解析数据段开始标志
void parse_data_section_keyword(int line_num)
{
// 数据段标志
if (AS_DATA == assembler_state)
{
error_msg("定义了重复的数据段。", line_num);
}
else if (AS_BEGIN == assembler_state)
{
error_msg("数据段不能定义在代码段的前面。", line_num);
}
assembler_state = AS_DATA;
}
// 定义关键字和解析函数的对应关系
typedef void(*PARSE_FUNCTION)(int line_num);
struct KEYWORD_FUNCTION_ENTRY
{
const char** keyword;
PARSE_FUNCTION parse_function;
};
//
// 必须将关键字及其解析函数放在下面的表中。从而可以使用“表驱动”的编程模式。
//
struct KEYWORD_FUNCTION_ENTRY keyword_function_table[] =
{
{ NULL, NULL } // 未用
,{ &int_table_section_keyword, parse_int_table_section_keyword }
,{ &code_section_keyword, parse_code_section_keyword }
,{ &data_section_keyword, parse_data_section_keyword }
,{ &mov_instruction_keyword, parse_mov }
,{ &jmp_instruction_keyword, parse_jmp }
,{ &add_instruction_keyword, parse_add }
,{ &adc_instruction_keyword, parse_adc }
,{ &sub_instruction_keyword, parse_sub }
,{ &sbb_instruction_keyword, parse_sbb }
,{ &and_instruction_keyword, parse_and }
,{ &or_instruction_keyword, parse_or }
,{ &jc_instruction_keyword, parse_jc }
,{ &jz_instruction_keyword, parse_jz }
,{ &je_instruction_keyword, parse_jz }
,{ &jnz_instruction_keyword, parse_jnz }
,{ &jne_instruction_keyword, parse_jnz }
,{ &call_instruction_keyword, parse_call }
,{ &push_instruction_keyword, parse_push }
,{ &pop_instruction_keyword, parse_pop }
,{ &in_instruction_keyword, parse_in }
,{ &out_instruction_keyword, parse_out }
,{ &ret_instruction_keyword, parse_ret }
,{ &shr_instruction_keyword, parse_shr }
,{ &shl_instruction_keyword, parse_shl }
,{ &rcr_instruction_keyword, parse_rcr }
,{ &rcl_instruction_keyword, parse_rcl }
,{ &sal_instruction_keyword, parse_sal }
,{ &sar_instruction_keyword, parse_sar }
,{ &rol_instruction_keyword, parse_rol }
,{ &ror_instruction_keyword, parse_ror }
,{ &not_instruction_keyword, parse_not }
,{ &iret_instruction_keyword, parse_iret }
,{ &nop_instruction_keyword, parse_nop }
,{ &int_instruction_keyword, parse_int }
,{ &lea_instruction_keyword, parse_lea }
,{ &inc_instruction_keyword, parse_inc }
,{ &dec_instruction_keyword, parse_dec }
,{ &cmp_instruction_keyword, parse_cmp }
,{ &cli_instruction_keyword, parse_cli }
,{ &sti_instruction_keyword, parse_sti }
,{ &al_register_keyword, NULL }
,{ &bl_register_keyword, NULL }
,{ &cl_register_keyword, NULL }
,{ &dl_register_keyword, NULL }
,{ &sp_register_keyword, NULL }
,{ &bp_register_keyword, NULL }
,{ &si_register_keyword, NULL }
,{ &di_register_keyword, NULL }
,{ &cs_register_keyword, NULL }
,{ &ds_register_keyword, NULL }
,{ &ss_register_keyword, NULL }
,{ &es_register_keyword, NULL }
,{ &al_register_indirect_keyword, NULL }
,{ &bl_register_indirect_keyword, NULL }
,{ &cl_register_indirect_keyword, NULL }
,{ &dl_register_indirect_keyword, NULL }
,{ &sp_register_indirect_keyword, NULL }
,{ &bp_register_indirect_keyword, NULL }
,{ &si_register_indirect_keyword, NULL }
,{ &di_register_indirect_keyword, NULL }
,{ &cs_register_indirect_keyword, NULL }
,{ &ds_register_indirect_keyword, NULL }
,{ &ss_register_indirect_keyword, NULL }
,{ &es_register_indirect_keyword, NULL }
};
// 判断是否是一个关键字。返回0，不是关键字；返回非0，是关键字，并且返回值就是关键字在表中的下标。
int match_keyword(const char* token)
{
int i;
for (i = 1; i < sizeof(keyword_function_table) / sizeof(keyword_function_table[0]); i++)
{
if (stricmp(token, *keyword_function_table[i].keyword) == 0)
{
return i;
}
}
return 0;
}
// 判断是否是一个符号
int is_symbol(const char* token, int line_num)
{
int i;
char symbol_name[MAX_SYMBOL_LENGTH];
// 最后一个字符必须是冒号
if (token[strlen(token) - 1] != ':')
{
return 0;
}
// 第一个字符必须是字母或者下划线
if (token[0] != '_' && !isalpha(token[0]))
{
return 0;
}
// 后面的字符必须是字母、数字、下划线
for (i = 0; i < (int)strlen(token) - 2; i++)
{
if (token[i] != '_' && !isalpha(token[i]) && !isdigit(token[i]))
{
return 0;
}
}
// 不能与关键字相同
strcpy(symbol_name, token);
symbol_name[strlen(symbol_name) - 1] = 0;
if (match_keyword(symbol_name) != 0)
{
error_msg_keyword_symbol(symbol_name, line_num);
}
return 1;
}
// 判断是否是一个中断向量
int is_int_vector(const char* token, int line_num)
{
int i;
char vector_name[MAX_SYMBOL_LENGTH];
// 第一个字符必须是字母或者下划线
if (token[0] != '_' && !isalpha(token[0]))
{
return 0;
}
// 后面的字符必须是字母、数字、下划线
for (i = 0; i < (int)strlen(token) - 2; i++)
{
if (token[i] != '_' && !isalpha(token[i]) && !isdigit(token[i]))
{
return 0;
}
}
// 不能与关键字相同
strcpy(vector_name, token);
if (match_keyword(vector_name) != 0)
{
error_msg_keyword_int_vector(vector_name, line_num);
}
return 1;
}
// 输出版本信息
void version_msg()
{
printf(
"Engintime 8086 汇编器 [版本 2.0]\n"
);
}
// 输出帮助信息
void help_msg()
{
printf(
"Engintime 8086 汇编器。\n\n"
"用法:\n\n"
" dmasm.exe assembly_file_name [options]\n\n"
"选项:\n\n"
" -g debug_file_name\t指定生成的调试信息文件路径。\n"
" -h\t\t\t打印此帮助信息。\n"
" -l list_file_name\t指定生成的列表文件路径。\n"
" -o target_file_name\t指定生成的目标文件路径。若未指定，默认生成 a.obj 文件。\n"
" -v\t\t\t打印版本信息。\n"
);
printf("\n");
version_msg();
exit(1);
}
void argument_error_msg()
{
printf("命令行参数错误。\n\n");
help_msg();
}
// 处理器用户输入的命令行参数
void process_argument(int argc, char* argv[])
{
int i;
// argv[0] 是 "easm.exe"，所以可以忽略。
for (i = 1; i < argc; i++)
{
if (strcmp(argv[i], "-v") == 0)
{
version_msg();
exit(1);
}
else if (strcmp(argv[i], "-h") == 0)
{
help_msg();
}
else if (strcmp(argv[i], "-o") == 0)
{
if (i + 1 < argc)
{
i++;
target_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if (strcmp(argv[i], "-l") == 0)
{
if (i + 1 < argc)
{
i++;
list_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if (strcmp(argv[i], "-g") == 0)
{
if (i + 1 < argc)
{
i++;
dbg_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if (NULL == assembly_file_name && argv[i][0] != '-')
{
// 输入的汇编源代码文件路径。
assembly_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
//
// 如果命令行参数中没有指定输入的汇编文件，就打印错误信息后退出
//
if (NULL == assembly_file_name)
{
printf("命令行参数错误。没有指定汇编源代码文件的路径。\n");
help_msg();
}
}
// 将一个字符串写入二进制文件中。先将字符串长度写入文件，然后将字符串中的
// 每个字符依次写入文件，不包括字符串末尾的 0.
void write_string_to_binary_file(const char* str, FILE* fp)
{
int str_length;
if (str != NULL)
{
str_length = strlen(str);
fwrite(&str_length, 1, sizeof(str_length), fp);
fwrite(str, 1, str_length, fp);
}
else
{
str_length = 0;
fwrite(&str_length, 1, sizeof(str_length), fp);
}
}
int main(int argc, char* argv[])
{
FILE* fp;
char* token;
char line[MAX_LINE_LENGTH];
int i, j;
int line_num = 1; // 行号从第一行开始计数
int keyword_index;
//
// 处理命令行参数
//
process_argument(argc, argv);
//
// 打开汇编源代码文件
//
fp = fopen(assembly_file_name, "r");
if (NULL == fp)
{
printf("无法打开源代码文件 %s\n", assembly_file_name);
return 1;
}
//////////////////////////////////////////////////////////////////////////
// 第一遍扫描
version_msg();
printf("\n正在汇编 %s...\n", assembly_file_name);
//
// 一次读取一行文本，同时记录所有的代码行信息
//
while (fgets(line, sizeof(line), fp) != NULL)
{
//
// 将一行代码的信息记录到代码行数据库中
//
strcpy(line_database[line_count].line_string, line);
line_database[line_count].line_num = line_num;
line_database[line_count].address = machine_code_address;
//
// 将代码行中的注释剥离
//
line[strcspn(line, ";")] = 0;
//
// 开始解析代码行
//
token = strtok(line, delimit_char);
if (NULL == token)
{
// 如果是空行，不做任何处理
}
else if ((keyword_index = match_keyword(token)) != 0
&& keyword_function_table[keyword_index].parse_function != NULL)
{
// 根据关键字进行相应的处理
keyword_function_table[keyword_index].parse_function(line_num);
}
else if (is_int_vector(token, line_num))
{
// 必须首先判断是否是中断向量，然后再判断是否是标号。因为判断标号的时候会删除最后一个标志字符“：”，而中断向量名称后是没有冒号的
// 中断向量
parse_int_vector(token, line_num);
// 判断符号
if (is_symbol(token, line_num))
{
// 处理符号
parse_symbol(token, line_num);
}
}
else
{
error_msg("无法识别的代码行。", line_num);
}
//
// 补充代码行数据库信息
//
line_database[line_count].machine_code_count = machine_code_address - machine_code_old_address;
machine_code_old_address = machine_code_address;
//
// 检查机器码地址是否超过了最大地址，若超过则报错(一个地址单元存储一个字节机器码)
//
//
if (MAX_MACHINE_CODE_BYTE_COUNT == machine_code_address)
{
sprintf(formated_msg, "汇编代码的机器码过多，最多只能有 %d 个字节机器码。", MAX_MACHINE_CODE_BYTE_COUNT);
error_msg(formated_msg, -1);
}
//
// 记录产生了机器码的代码行数量
//
if (line_database[line_count].machine_code_count != 0)
{
machine_code_line_count++;
}
//
// 增加行号
//
line_count++;
line_num++;
if (line_count == MAX_LINE_COUNT)
{
sprintf(formated_msg, "汇编文件中的代码行过多，最多只能有 %d 行代码。", MAX_LINE_COUNT);
error_msg(formated_msg, -1);
}
}
fclose(fp);
//////////////////////////////////////////////////////////////////////////
// 第二遍扫描
//
// 根据符号表更新重定位表
//
for (i = 0; i < reallocate_count; i++)
{
for (j = 0; j < symbol_count; j++)
{
if (stricmp(symbol_table[j].name, reallocate_table[i].symbol_name) == 0)
{
machine_code[reallocate_table[i].address] = (BYTE)symbol_table[j].address;
symbol_table[j].ref_count++;
break;
}
}
if (j == symbol_count)
{
// 重定位表中使用的符号在符号表中未定义，报错
sprintf(formated_msg, "使用了未定义的符号 %s。", reallocate_table[i].symbol_name);
error_msg(formated_msg, reallocate_table[i].line_num);
}
}
//
// 如果存在未引用的符号，输出警告信息。
//
for (i = 0; i < symbol_count; i++)
{
if (0 == symbol_table[i].ref_count)
{
warning_msg_unref_symbol(symbol_table[i].name, symbol_table[i].line_num);
}
}
//////////////////////////////////////////////////////////////////////////
// 产生各种输出文件
//
// 将机器码写入二进制文件
//
if (NULL == target_file_name)
{
target_file_name = "a.obj";
}
fp = fopen(target_file_name, "wb");
if (NULL == fp)
{
printf("无法打开输出文件 %s\n", target_file_name);
return 1;
}
fwrite(machine_code, 1, machine_code_address, fp);
fclose(fp);
printf("\n生成目标文件 %s\n", target_file_name);
//
// 将代码行数据库中的信息写入列表文件
//
if (list_file_name != NULL)
{
fp = fopen(list_file_name, "w");
if (NULL == fp)
{
printf("无法打开列表文件 %s\n", list_file_name);
return 1;
}
for (i = 0; i < line_count; i++)
{
// 行号
fprintf(fp, "%04d ", line_database[i].line_num);
// 地址和机器码
if (line_database[i].machine_code_count > 0)
{
fprintf(fp, "%02X ", line_database[i].address);
for (j = 0; j < line_database[i].machine_code_count; j++)
{
// 确保每行最多写三个字节的机器码
if (j != 0 && j % 3 == 0)
{
if (3 == j)
{
fprintf(fp, " ");
}
else
{
fprintf(fp, "\n ");
}
}
fprintf(fp, "%02X ", machine_code[line_database[i].address + j]);
if (2 == j)
{
fprintf(fp, " ");
fprintf(fp, line_database[i].line_string);
}
}
if (1 == j)
{
// 单字节指令
fprintf(fp, " ");
fprintf(fp, line_database[i].line_string);
}
else if (2 == j)
{
fprintf(fp, " ");
fprintf(fp, line_database[i].line_string);
}
else if (j > 3)
{
fprintf(fp, "\n");
}
}
else
{
fprintf(fp, " ");
// 源代码
fprintf(fp, line_database[i].line_string);
}
}
fclose(fp);
printf("生成列表文件 %s\n", list_file_name);
}
//
// 将代码行数据库中的信息写入二进制的调试信息文件。
//
// 调试信息的基本格式为：
// 魔数（4字节），固定不可改变
// 版本号（4字节），固定不可改变
// 源代码文件绝对路径字符串长度（4字节）
// 源代码文件绝对路径字符串（不包括字符串结尾的0）
// 列表文件绝对路径字符串长度（4字节）
// 列表文件绝对路径字符串（不包括字符串结尾的0）
//
// 代码行数据库中元素的数量（4字节）
// 代码行数据库中的所有元素
//
// 符号表元素的数量（4字节）
// 符号表中的所有元素
//
if (dbg_file_name != NULL)
{
fp = fopen(dbg_file_name, "wb");
if (NULL == fp)
{
printf("无法打开调试信息文件 %s\n", dbg_file_name);
return 1;
}
// 魔数
fwrite(&dbg_file_magic, 1, sizeof(dbg_file_magic), fp);
// 版本号
fwrite(&dbg_file_version, 1, sizeof(dbg_file_version), fp);
// 源代码文件路径
write_string_to_binary_file(assembly_file_name, fp);
// 列表文件路径
write_string_to_binary_file(list_file_name, fp);
// 代码行数据库中的所有元素
fwrite(&machine_code_line_count, 1, sizeof(machine_code_line_count), fp);
for (i = 0; i < line_count; i++)
{
// 跳过没有产生机器码的代码行
if (0 == line_database[i].machine_code_count)
{
continue;
}
fwrite(&line_database[i].line_num, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].address, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].machine_code_count, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].flag, 1, sizeof(unsigned long), fp);
}
// 符号表中的所有元素
fwrite(&symbol_count, 1, sizeof(symbol_count), fp);
for (i = 0; i < symbol_count; i++)
{
write_string_to_binary_file(symbol_table[i].name, fp);
fwrite(&symbol_table[i].address, 1, sizeof(unsigned long), fp);
fwrite(&symbol_table[i].machine_code_count, 1, sizeof(int), fp);
fwrite(&symbol_table[i].line_num, 1, sizeof(int), fp);
}
fclose(fp);
printf("生成调试信息文件 %s\n", dbg_file_name);
}
return 0;
}
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MEM/ram.asm 0 → 100644
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; 0~15号存储单元存放中断向量，即中断向量表
.int_table
int0
int1
int2
int3
int4
int5
int6
int7
.text
cli ; 关中断
; 初始化栈顶地址
mov sp, 0
; 初始化主片8259A
mov al, 0x13
out 0x80, al ; 写ICW1，边沿触发，单片，需要设置ICW4
mov al, 0
out 0x81, al ; 写ICW2,设定IRQ0的中断号为0
out 0x81, al ; 写入ICW4，设定普通全嵌套方式，普通EOI方式（通过发EOI命令结束中断）
out 0x81, al ; 写OCW1，允许全部8级中断请求
sti ; 开中断
mov dl, 0
mov bl, 0
NEXT:
inc dl
cmp dl, 0xff
jnz NEXT
DEAD_LOOP:
jmp DEAD_LOOP
;================================================
; 主片的中断服务程序
int0:
mov bl, 0
mov cl, 1
shr cl, bl
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int1: ;1 interrupt
mov bl, 0
add bl, 1
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int2: ;2 interrupt
mov bl, 0
add bl, 2
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int3: ;3 interrupt
mov bl, 0
add bl, 3
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int4: ;
mov bl, 0
add bl, 4
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int5: ;
mov bl, 0
add bl, 5
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int6: ;
mov bl, 0
add bl, 6
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
int7: ;
mov bl, 0
add bl, 7
mov al, 0x20
out 0x80, al ;中断结束命令eoi
iret
MEM/ram.bat 0 → 100644
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@echo off
dmasm.exe ram.asm -o ram.rxm -l ram.lst -g ram.dbg
pause
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0001 ; 0~15号存储单元存放中断向量，即中断向量表
0002
0003 .int_table
0004 00 36 int0
0005 01 46 int1
0006 02 54 int2
0007 03 62 int3
0008 04 70 int4
0009 05 7E int5
0010 06 8C int6
0011 07 9A int7
0012
0013 .text
0014
0015 10 74 cli ; 关中断
0016
0017 ; 初始化栈顶地址
0018 11 01 04 00 mov sp, 0
0019
0020 ; 初始化主片8259A
0021 14 01 00 13 mov al, 0x13
0022 17 4E 00 80 out 0x80, al ; 写ICW1，边沿触发，单片，需要设置ICW4
0023 1A 01 00 00 mov al, 0
0024 1D 4E 00 81 out 0x81, al ; 写ICW2,设定IRQ0的中断号为0
0025 20 4E 00 81 out 0x81, al ; 写入ICW4，设定普通全嵌套方式，普通EOI方式（通过发EOI命令结束中断）
0026 23 4E 00 81 out 0x81, al ; 写OCW1，允许全部8级中断请求
0027
0028 26 75 sti ; 开中断
0029
0030 27 01 03 00 mov dl, 0
0031 2A 01 01 00 mov bl, 0
0032
0033 NEXT:
0034 2D 78 03 inc dl
0035 2F 47 03 FF cmp dl, 0xff
0036 32 55 2D jnz NEXT
0037
0038 DEAD_LOOP:
0039 34 57 34 jmp DEAD_LOOP
0040
0041
0042 ;================================================
0043 ; 主片的中断服务程序
0044 int0:
0045 36 01 01 00 mov bl, 0
0046 39 01 02 01 mov cl, 1
0047 3C 65 12 shr cl, bl
0048 3E 01 00 20 mov al, 0x20
0049 41 4E 00 80 out 0x80, al ;中断结束命令eoi
0050 44 5D 44 iret
0051
0052 int1: ;1 interrupt
0053 46 01 01 00 mov bl, 0
0054 49 0E 01 01 add bl, 1
0055 4C 01 00 20 mov al, 0x20
0056 4F 4E 00 80 out 0x80, al ;中断结束命令eoi
0057 52 5D 44 iret
0058
0059 int2: ;2 interrupt
0060 54 01 01 00 mov bl, 0
0061 57 0E 01 02 add bl, 2
0062 5A 01 00 20 mov al, 0x20
0063 5D 4E 00 80 out 0x80, al ;中断结束命令eoi
0064 60 5D 44 iret
0065
0066
0067 int3: ;3 interrupt
0068 62 01 01 00 mov bl, 0
0069 65 0E 01 03 add bl, 3
0070 68 01 00 20 mov al, 0x20
0071 6B 4E 00 80 out 0x80, al ;中断结束命令eoi
0072 6E 5D 44 iret
0073
0074 int4: ;
0075 70 01 01 00 mov bl, 0
0076 73 0E 01 04 add bl, 4
0077 76 01 00 20 mov al, 0x20
0078 79 4E 00 80 out 0x80, al ;中断结束命令eoi
0079 7C 5D 44 iret
0080
0081 int5: ;
0082 7E 01 01 00 mov bl, 0
0083 81 0E 01 05 add bl, 5
0084 84 01 00 20 mov al, 0x20
0085 87 4E 00 80 out 0x80, al ;中断结束命令eoi
0086 8A 5D 44 iret
0087
0088 int6: ;
0089 8C 01 01 00 mov bl, 0
0090 8F 0E 01 06 add bl, 6
0091 92 01 00 20 mov al, 0x20
0092 95 4E 00 80 out 0x80, al ;中断结束命令eoi
0093 98 5D 44 iret
0094
0095 int7: ;
0096 9A 01 01 00 mov bl, 0
0097 9D 0E 01 07 add bl, 7
0098 A0 01 00 20 mov al, 0x20
0099 A3 4E 00 80 out 0x80, al ;中断结束命令eoi
0100 A6 5D 44 iret
0101
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README.md 0 → 100644
浏览文件 @ 7c300cda
# 说明
可编程中断控制器实验
# 原理图
![raw svg](top.dlsche.svg)
![raw svg](top1.dlsche.svg)
\ No newline at end of file
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top.dlsche.svg 0 → 100644
浏览文件 @ 7c300cda
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<svg height="4683" version="1.1" width="12189" xmlns="http://www.w3.org/2000/svg">
<text alignment-baseline="after-edge" fill="#800000" font-family="微软雅黑" font-size="200" font-weight="700" text-anchor="start" x="27" y="3906">DBUS[7..0]</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="微软雅黑" font-size="200" font-weight="700" text-anchor="start" x="57" y="1136">ABUS[7..0]</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="微软雅黑" font-size="65" font-weight="700" text-anchor="start" x="1777" y="2606">CLK</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1167" x2="1267" y1="2606" y2="2606"/>
<rect fill="#ffffb0" height="100" stroke="#800000" stroke-width="5" width="100" x="1067" y="2556"/>
<polyline fill="none" points="1077 2506, 1157 2506" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="1117 2506, 1117 2556" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="1087 2636, 1117 2636, 1117 2576, 1147 2576" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="180" font-weight="700" text-anchor="start" x="687" y="2493">CLOCK</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="977" y="2616">SCLK</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="65" font-weight="700" text-anchor="start" x="977" y="2726">Key = C</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="微软雅黑" font-size="90" font-weight="700" text-anchor="start" x="1447" y="1826">RESET</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1347" x2="1447" y1="1826" y2="1826"/>
<rect fill="#ffffb0" height="100" stroke="#800000" stroke-width="5" width="100" x="1247" y="1776"/>
<polyline fill="none" points="1257 1726, 1337 1726" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="1297 1726, 1297 1776" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="1267 1856, 1297 1856, 1297 1796, 1327 1796" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="180" font-weight="700" text-anchor="start" x="1027" y="1703">RESET</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1157" y="1836">SCLK</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="180" font-weight="700" text-anchor="start" x="997" y="2126">Key = R</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="10517" y="3106">高电平，中断请求</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="10427" y="2206">低电平，中断应答</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="10817" y="3226">SP=1，主片</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11057" y="2093">C2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="10927" y="2216">SCLK</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="11017" y="2306">Key = 7</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11227" y="2316">SCLK</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="11317" y="2406">Key = 6</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11657" y="2293">C4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11527" y="2416">SCLK</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="11617" y="2506">Key = 5</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11957" y="2393">C5</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11827" y="2516">SCLK</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="11917" y="2606">Key = 4</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="10977" y="3166">SCLK</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11407" y="2943">C7</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11277" y="3066">SCLK</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11707" y="2843">C8</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11577" y="2966">SCLK</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="12007" y="2743">C9</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="11877" y="2866">SCLK</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="10917" y="2696">上升沿触发中断请求</text>
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top1.dlsche 0 → 100644
浏览文件 @ 7c300cda
添加文件
top1.dlsche.svg 0 → 100644
浏览文件 @ 7c300cda
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<text alignment-baseline="after-edge" fill="#800000" font-family="微软雅黑" font-size="200" font-weight="700" text-anchor="start" x="57" y="1136">ABUS[7..0]</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="9517" y="2406">DBUS7</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="10687" y="3086">高电平，中断请求</text>
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