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#include <assert.h>
#include <elf.h>
#include <errno.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
typedef struct {
Elf64_Shdr hdr;
int16_t idx;
int64_t wco;
int64_t offset;
size_t capacity;
uint8_t *data;
} Section;
typedef struct {
const char *name;
int64_t offset;
int64_t size;
int global;
Section *section;
} Symbol;
typedef enum {
// Misc
ASM_SYNTAX_ERROR,
ASM_BLANK,
ASM_LABEL,
ASM_IMM,
ASM_IDENT,
ASM_NUMBER,
ASM_MEMARG,
// Directives
ASM_DIR_GLOBL,
ASM_DIR_DATA,
ASM_DIR_TEXT,
ASM_DIR_BYTE,
ASM_DIR_BALIGN,
// Instructions
ASM_NOP,
ASM_RET,
ASM_JMP,
ASM_LEAVE,
ASM_ADD,
ASM_AND,
ASM_LEA,
ASM_MOV,
ASM_OR,
ASM_SUB,
ASM_XOR,
// Registers, order matters.
ASM_REG_BEGIN,
ASM_EAX,
ASM_ECX,
ASM_EDX,
ASM_EBX,
ASM_ESP,
ASM_EBP,
ASM_ESI,
ASM_EDI,
ASM_RAX,
ASM_RCX,
ASM_RDX,
ASM_RBX,
ASM_RSP,
ASM_RBP,
ASM_RSI,
ASM_RDI,
ASM_R8,
ASM_R9,
ASM_R10,
ASM_R11,
ASM_R12,
ASM_R13,
ASM_R14,
ASM_R15,
ASM_REG_END,
} AsmKind;
typedef union Parsev Parsev;
typedef struct {
AsmKind kind;
const char *name;
} Label;
typedef struct {
AsmKind kind;
const char *name;
} Globl;
typedef struct {
AsmKind kind;
uint8_t b;
} Byte;
typedef struct {
AsmKind kind;
uint64_t align;
} Balign;
typedef struct {
AsmKind kind;
const char *l; /* label */
int64_t c; /* constant */
} Imm;
typedef struct {
AsmKind kind;
AsmKind reg;
const char *l; /* label */
int64_t c; /* constant */
} Memarg;
typedef struct {
AsmKind kind;
const char *name;
} Ident;
typedef struct {
AsmKind kind;
int64_t v;
} Number;
typedef struct {
AsmKind kind;
const char *target;
} Jmp;
typedef struct {
AsmKind kind;
char type;
Parsev *src;
Parsev *dst;
} ModRMBinop;
typedef ModRMBinop Add;
typedef ModRMBinop And;
typedef ModRMBinop Lea;
typedef ModRMBinop Mov;
typedef ModRMBinop Or;
typedef ModRMBinop Sub;
typedef ModRMBinop Xor;
union Parsev {
AsmKind kind;
Label label;
Globl globl;
Balign balign;
Memarg memarg;
ModRMBinop modrmbinop;
Add add;
And and;
Lea lea;
Mov mov;
Or or;
Xor xor;
Sub sub;
Jmp jmp;
Byte byte;
Imm imm;
Ident ident;
Number number;
};
typedef struct AsmLine AsmLine;
struct AsmLine {
int64_t lineno;
Parsev v;
AsmLine *next;
};
/* util.c */
void fatal(const char *fmt, ...);
void *xmalloc(size_t);
void *xrealloc(void *, size_t);
void *xreallocarray(void *, size_t, size_t);
char *xmemdup(const char *, size_t);
char *xstrdup(const char *s);
void *zalloc(size_t n);
struct hashtable {
size_t len, cap;
struct hashtablekey *keys;
void **vals;
};
struct hashtablekey {
uint64_t hash;
const char *str;
size_t len;
};
void htabkey(struct hashtablekey *, const char *, size_t);
struct hashtable *mkhtab(size_t);
void delhtab(struct hashtable *, void(void *));
void **htabput(struct hashtable *, struct hashtablekey *);
void *htabget(struct hashtable *, struct hashtablekey *);
uint64_t murmurhash64a(const void *, size_t);
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