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w.c
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w.c
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#include <ir/ir.h>
#include <target/util.h>
#include <target/wcore.h>
#define GRASS_N_BITS 24
#define GRASS_INST_MOV 8
#define GRASS_INST_ADDSUB 7
#define GRASS_INST_STORE 6
#define GRASS_INST_LOAD 5
#define GRASS_INST_JMP 4
#define GRASS_INST_CMP 3
#define GRASS_INST_JMPCMP 2
#define GRASS_INST_IO 1
#define GRASS_IO_GETC 1
#define GRASS_IO_PUTC 2
#define GRASS_IO_EXIT 3
#define GRASS_NIL 0
#define GRASS_T 1
#define GRASS_REG_A_WEIGHT 4
#define GRASS_REG_B_WEIGHT 6
#define GRASS_REG_C_WEIGHT 6
#define GRASS_REG_D_WEIGHT 6
#define GRASS_REG_SP_WEIGHT 6
#define GRASS_REG_BP_WEIGHT 7
static const char GRASS_REG_A[] = "wvwwWWWwwvwwvwWwwwWwwwv";
static const char GRASS_REG_B[] = "wwvwvwwWWWwwvwWwwWwwwwwvwWwwwWWWWWwwwWWwvwWwwwwwwWWWWWWwwwWWwv";
static const char GRASS_REG_C[] = "wwvwWwwWwwwvwvwWwwwwWWWwwwwWWwvwWwwwwwWWWWwwwWWwvwWwwwwwwWWWWWwwwWWwv";
static const char GRASS_REG_D[] = "wwvwvwwWWWwwvwWwwWwwwwwvwWwwwwwWWWWWwwwWWwvwWwwwwwwWWWWWWwwwWWwv";
static const char GRASS_REG_SP[] = "wwvwvwwWWWwwvwWwwwwWwwwwwvwWwwwWWWWWwwwWWwvwWwwwwwwWWWWWWwwwWWwv";
static const char GRASS_REG_BP[] = "wwvwvwwWWWwwvwWwwWwwwwwvwWwwwwwWWWWWwwwWWwvwWwwwwwwWWWWWWwwwWWwvwWwwwwwwwWWWWWWWwwwWWwv";
#define GRASS_CMP_WEIGHT 4
static const char GRASS_CMP_GT[] = "wwvwvwwWWWwwvwWwwwwWwwwwwWwwwwv";
static const char GRASS_CMP_LT[] = "wwvwvwwWWWwwvwWwwwwWwwwWwwwwwwv";
static const char GRASS_CMP_EQ[] = "wvwwWWWwwvwwvwWwwwWwwwWwwwwv";
static const char GRASS_CMP_LE[] = "wvwwWWWwwvwwvwWwwwWwwwwWwwwwv";
static const char GRASS_CMP_GE[] = "wvwwWWWwwvwwvwWwwwWwwwWwwwwwv";
static const char GRASS_CMP_NE[] = "wwvwvwwWWWwwvwWwwwwWwwwWwwwwv";
static int GRASS_BP = 1;
static void grass_apply(int W, int w) {
for (; W; W--) putchar('W');
for (; w; w--) putchar('w');
}
static void grass_apply_stack_top_to_grassvm() {
grass_apply(GRASS_BP, 1);
putchar('v');
GRASS_BP = 1;
}
static int emit_grass_reg_helper(const char* s, const int i) {
fputs(s, stdout);
GRASS_BP += i;
return GRASS_BP;
}
static void emit_grass_reg(Reg r) {
switch (r) {
case A: emit_grass_reg_helper(GRASS_REG_A, GRASS_REG_A_WEIGHT); return;
case B: emit_grass_reg_helper(GRASS_REG_B, GRASS_REG_B_WEIGHT); return;
case C: emit_grass_reg_helper(GRASS_REG_C, GRASS_REG_C_WEIGHT); return;
case D: emit_grass_reg_helper(GRASS_REG_D, GRASS_REG_D_WEIGHT); return;
case BP: emit_grass_reg_helper(GRASS_REG_BP, GRASS_REG_BP_WEIGHT); return;
case SP: emit_grass_reg_helper(GRASS_REG_SP, GRASS_REG_SP_WEIGHT); return;
default:
error("unknown register: %d", r);
}
}
static int emit_grass_t_nil(int t_nil) {
if (t_nil) {
// \x.x
fputs("wv", stdout);
// \x.\y.x = \x.\y.(3 2)
fputs("wwWWWwwv", stdout);
GRASS_BP += 2;
} else {
// \x.\y.y
fputs("wwv", stdout);
GRASS_BP++;
}
return GRASS_BP;
}
static int emit_grass_int_inst(int n) {
#ifndef __eir__
n &= ((1 << GRASS_N_BITS) - 1);
#endif
// \x.x
fputs("wv", stdout);
// \x.\y.x : Initial index: 2
fputs("wwWWWwwv", stdout);
// \x.\y.y : Initial index: 1
fputs("wwv", stdout);
GRASS_BP += 3;
for (int i = 0; i < GRASS_N_BITS; i++) {
const int checkbit = 1 << i;
const int t_index = i + 1 + 2;
const int nil_index = i + 1 + 1;
putchar('w');
grass_apply(1, (n & checkbit) ? nil_index : t_index);
grass_apply(1, 3);
putchar('v');
GRASS_BP++;
}
return GRASS_BP;
}
static int emit_grass_isimm(Value* v) {
if (v->type == REG) {
emit_grass_t_nil(GRASS_NIL);
} else if (v->type == IMM) {
emit_grass_t_nil(GRASS_T);
} else {
error("invalid value");
}
return GRASS_BP;
}
static int emit_grass_value_str(Value* v) {
if (v->type == REG) {
emit_grass_reg(v->reg);
} else if (v->type == IMM) {
emit_grass_int_inst(v->imm);
} else {
error("invalid value");
}
return GRASS_BP;
}
static int emit_grass_int_data(int n) {
#ifndef __eir__
n &= ((1 << GRASS_N_BITS) - 1);
#endif
// \x.x
fputs("wv", stdout);
// \x.\y.y
fputs("wwv", stdout);
// \x.\y.x
fputs("wwWWWWwwv", stdout);
GRASS_BP += 3;
// Apply t to initialize data insertion
grass_apply_stack_top_to_grassvm();
// Apply integers
for (int i = 0; i < GRASS_N_BITS; i++) {
const int checkbit = 1 << (GRASS_N_BITS - 1 - i);
const int nil_index = i + 3;
const int t_index = i + 2;
grass_apply(1, (n & checkbit) ? nil_index : t_index);
}
putchar('v');
GRASS_BP = 1;
putchar('\n');
return GRASS_BP;
}
static Data* grass_reverse_data(Data* data) {
Data* prev = NULL;
while (data) {
Data* next = data->next;
data->next = prev;
prev = data;
data = next;
}
return prev;
}
static void emit_grass_data_list(Data* data) {
data = grass_reverse_data(data);
putchar('\n');
for (; data; data = data->next){
emit_grass_int_data(data->v);
}
// \x.\y.y
fputs("wwv", stdout);
GRASS_BP++;
// Apply nil to end data insertion
grass_apply_stack_top_to_grassvm();
putchar('\n');
}
static int emit_grass_inst_tag(int i_tag) {
if (i_tag == GRASS_INST_MOV) {
// \x.\y.\z.\a.\b.\c.\d.\e.e
fputs("wwwwwwwwv", stdout);
GRASS_BP++;
} else {
// \x.x
fputs("wv", stdout);
// (\x.\y.\z.\a.\b.\c.\d.\e. (2 i_tag))
fputs("wwwwwwww", stdout);
grass_apply(9, 9 - i_tag);
putchar('v');
GRASS_BP += 2;
}
return GRASS_BP;
}
static int emit_grass_io_tag(int io_tag) {
if (io_tag == GRASS_IO_EXIT) {
// \x.\y.\z.z
fputs("wwwv", stdout);
GRASS_BP++;
} else {
// \x.x
fputs("wv", stdout);
// (\x.\y.\z. (2 io_tag))
fputs("www", stdout);
grass_apply(4, 4 - io_tag);
putchar('v');
GRASS_BP += 2;
}
return GRASS_BP;
}
static int emit_grass_n_tuple(int* cons_bp) {
putchar('w');
for (int i = 0; cons_bp[i]; i++) {
grass_apply(1, i + 1 + GRASS_BP - (cons_bp[i] - 1));
}
putchar('v');
GRASS_BP++;
return GRASS_BP;
}
static int emit_grass_enum_cmp(const char* enum_cmp) {
fputs(enum_cmp, stdout);
GRASS_BP += GRASS_CMP_WEIGHT;
return GRASS_BP;
}
static void emit_grass_cmp_inst(const char* enum_cmp, Inst* inst, int* inst_cons4) {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_CMP);
inst_cons4[1] = emit_grass_isimm(&inst->src);
inst_cons4[2] = emit_grass_value_str(&inst->src);
int cmp_cons[3];
cmp_cons[0] = emit_grass_enum_cmp(enum_cmp);
cmp_cons[1] = emit_grass_value_str(&inst->dst);
cmp_cons[2] = 0;
inst_cons4[3] = emit_grass_n_tuple(cmp_cons);
}
static void emit_grass_jmpcmp_inst(const char* enum_cmp, Inst* inst, int* inst_cons4) {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_JMPCMP);
inst_cons4[1] = emit_grass_isimm(&inst->src);
inst_cons4[2] = emit_grass_value_str(&inst->src);
int jmpcmp_cons[5];
jmpcmp_cons[0] = emit_grass_enum_cmp(enum_cmp);
jmpcmp_cons[1] = emit_grass_isimm(&inst->jmp);
jmpcmp_cons[2] = emit_grass_value_str(&inst->jmp);
jmpcmp_cons[3] = emit_grass_value_str(&inst->dst);
jmpcmp_cons[4] = 0;
inst_cons4[3] = emit_grass_n_tuple(jmpcmp_cons);
}
static void emit_grass_basic_inst(int inst_tag, Inst* inst, int* inst_cons4) {
inst_cons4[0] = emit_grass_inst_tag(inst_tag);
inst_cons4[1] = emit_grass_isimm(&inst->src);
inst_cons4[2] = emit_grass_value_str(&inst->src);
inst_cons4[3] = emit_grass_value_str(&inst->dst);
}
static void emit_grass_inst(Inst* inst) {
int inst_cons4[5];
inst_cons4[4] = 0;
switch (inst->op) {
case MOV: emit_grass_basic_inst(GRASS_INST_MOV, inst, inst_cons4); break;
case LOAD: emit_grass_basic_inst(GRASS_INST_LOAD, inst, inst_cons4); break;
case STORE: emit_grass_basic_inst(GRASS_INST_STORE, inst, inst_cons4); break;
case EQ: emit_grass_cmp_inst(GRASS_CMP_EQ, inst, inst_cons4); break;
case NE: emit_grass_cmp_inst(GRASS_CMP_NE, inst, inst_cons4); break;
case LT: emit_grass_cmp_inst(GRASS_CMP_LT, inst, inst_cons4); break;
case GT: emit_grass_cmp_inst(GRASS_CMP_GT, inst, inst_cons4); break;
case LE: emit_grass_cmp_inst(GRASS_CMP_LE, inst, inst_cons4); break;
case GE: emit_grass_cmp_inst(GRASS_CMP_GE, inst, inst_cons4); break;
case JEQ: emit_grass_jmpcmp_inst(GRASS_CMP_EQ, inst, inst_cons4); break;
case JNE: emit_grass_jmpcmp_inst(GRASS_CMP_NE, inst, inst_cons4); break;
case JLT: emit_grass_jmpcmp_inst(GRASS_CMP_LT, inst, inst_cons4); break;
case JGT: emit_grass_jmpcmp_inst(GRASS_CMP_GT, inst, inst_cons4); break;
case JLE: emit_grass_jmpcmp_inst(GRASS_CMP_LE, inst, inst_cons4); break;
case JGE: emit_grass_jmpcmp_inst(GRASS_CMP_GE, inst, inst_cons4); break;
case JMP: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_JMP);
inst_cons4[1] = emit_grass_isimm(&inst->jmp);
inst_cons4[2] = emit_grass_value_str(&inst->jmp);
inst_cons4[3] = emit_grass_t_nil(GRASS_NIL);
break;
}
case ADD: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_ADDSUB);
inst_cons4[1] = emit_grass_isimm(&inst->src);
inst_cons4[2] = emit_grass_value_str(&inst->src);
int add_cons[3];
add_cons[0] = emit_grass_value_str(&inst->dst);
add_cons[1] = emit_grass_t_nil(GRASS_T);
add_cons[2] = 0;
inst_cons4[3] = emit_grass_n_tuple(add_cons);
break;
}
case SUB: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_ADDSUB);
inst_cons4[1] = emit_grass_isimm(&inst->src);
inst_cons4[2] = emit_grass_value_str(&inst->src);
int sub_cons[3];
sub_cons[0] = emit_grass_value_str(&inst->dst);
sub_cons[1] = emit_grass_t_nil(GRASS_NIL);
sub_cons[2] = 0;
inst_cons4[3] = emit_grass_n_tuple(sub_cons);
break;
}
case PUTC: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_IO);
inst_cons4[1] = emit_grass_isimm(&inst->src);
inst_cons4[2] = emit_grass_value_str(&inst->src);
inst_cons4[3] = emit_grass_io_tag(GRASS_IO_PUTC);
break;
}
case GETC: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_IO);
inst_cons4[1] = emit_grass_t_nil(GRASS_NIL);
inst_cons4[2] = emit_grass_value_str(&inst->dst);
inst_cons4[3] = emit_grass_io_tag(GRASS_IO_GETC);
break;
}
case EXIT: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_IO);
inst_cons4[1] = emit_grass_t_nil(GRASS_NIL);
inst_cons4[2] = emit_grass_t_nil(GRASS_NIL);
inst_cons4[3] = emit_grass_io_tag(GRASS_IO_EXIT);
break;
}
case DUMP: {
inst_cons4[0] = emit_grass_inst_tag(GRASS_INST_MOV);
inst_cons4[1] = emit_grass_t_nil(GRASS_NIL);
inst_cons4[2] = emit_grass_reg_helper(GRASS_REG_A, GRASS_REG_A_WEIGHT);
inst_cons4[3] = emit_grass_reg_helper(GRASS_REG_A, GRASS_REG_A_WEIGHT);
break;
}
default:
error("oops");
}
emit_grass_n_tuple(inst_cons4);
grass_apply_stack_top_to_grassvm();
fputs("\n", stdout);
}
static Inst* grass_reverse_instructions(Inst* inst) {
Inst* prev = NULL;
while (inst) {
Inst* next = inst->next;
inst->next = prev;
prev = inst;
inst = next;
}
return prev;
}
static Inst* emit_grass_chunk(Inst* inst) {
const int init_pc = inst->pc;
for (; inst && (inst->pc == init_pc); inst = inst->next) {
emit_grass_inst(inst);
}
emit_grass_t_nil(GRASS_NIL);
grass_apply_stack_top_to_grassvm();
putchar('\n');
return inst;
}
static void emit_grass_text_list(Inst* inst) {
inst = grass_reverse_instructions(inst);
while (inst) {
inst = emit_grass_chunk(inst);
}
emit_grass_t_nil(GRASS_NIL);
grass_apply_stack_top_to_grassvm();
putchar('\n');
}
void target_w(Module* module) {
fputs(GRASS_VM, stdout);
putchar('v');
emit_grass_data_list(module->data);
emit_grass_text_list(module->text);
}