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M2-Planet/cc_core.c

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/* Copyright (C) 2016 Jeremiah Orians
* Copyright (C) 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright (C) 2020 deesix <deesix@tuta.io>
* Copyright (C) 2021 Andrius Štikonas <andrius@stikonas.eu>
* This file is part of M2-Planet.
*
* M2-Planet is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* M2-Planet is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with M2-Planet. If not, see <http://www.gnu.org/licenses/>.
*/
#include "cc.h"
#include "gcc_req.h"
#include <stdint.h>
/* Global lists */
struct token_list* global_symbol_list;
struct token_list* global_function_list;
struct token_list* global_constant_list;
/* Core lists for this file */
struct token_list* function;
/* What we are currently working on */
struct type* current_target;
char* break_target_head;
char* break_target_func;
char* break_target_num;
char* continue_target_head;
struct token_list* break_frame;
int current_count;
int Address_of;
/* Imported functions */
char* int2str(int x, int base, int signed_p);
int strtoint(char *a);
char* parse_string(char* string);
int escape_lookup(char* c);
void require(int bool, char* error);
struct token_list* reverse_list(struct token_list* head);
struct type* mirror_type(struct type* source, char* name);
struct type* add_primitive(struct type* a);
struct token_list* emit(char *s, struct token_list* head)
{
struct token_list* t = calloc(1, sizeof(struct token_list));
require(NULL != t, "Exhausted memory while generating token to emit\n");
t->next = head;
t->s = s;
return t;
}
void emit_out(char* s)
{
output_list = emit(s, output_list);
}
struct token_list* uniqueID(char* s, struct token_list* l, char* num)
{
l = emit("\n", emit(num, emit("_", emit(s, l))));
return l;
}
void uniqueID_out(char* s, char* num)
{
output_list = uniqueID(s, output_list, num);
}
struct token_list* sym_declare(char *s, struct type* t, struct token_list* list)
{
struct token_list* a = calloc(1, sizeof(struct token_list));
require(NULL != a, "Exhausted memory while attempting to declare a symbol\n");
a->next = list;
a->s = s;
a->type = t;
return a;
}
struct token_list* sym_lookup(char *s, struct token_list* symbol_list)
{
struct token_list* i;
for(i = symbol_list; NULL != i; i = i->next)
{
if(match(i->s, s)) return i;
}
return NULL;
}
void line_error_token(struct token_list *token)
{
if(NULL == token)
{
fputs("EOF reached inside of line_error\n", stderr);
fputs("problem at end of file\n", stderr);
return;
}
fputs(token->filename, stderr);
fputs(":", stderr);
fputs(int2str(token->linenumber, 10, TRUE), stderr);
fputs(":", stderr);
}
void line_error()
{
line_error_token(global_token);
}
void require_match(char* message, char* required)
{
if(NULL == global_token)
{
line_error();
fputs("EOF reached inside of require match\n", stderr);
fputs("problem at end of file\n", stderr);
fputs(message, stderr);
exit(EXIT_FAILURE);
}
if(!match(global_token->s, required))
{
line_error();
fputs(message, stderr);
exit(EXIT_FAILURE);
}
global_token = global_token->next;
}
void maybe_bootstrap_error(char* feature)
{
if (BOOTSTRAP_MODE)
{
line_error();
fputs(feature, stderr);
fputs(" is not supported in --bootstrap-mode\n", stderr);
exit(EXIT_FAILURE);
}
}
void expression();
void function_call(char* s, int bool)
{
require_match("ERROR in process_expression_list\nNo ( was found\n", "(");
require(NULL != global_token, "Improper function call\n");
int passed = 0;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("PUSHR R13 R15\t# Prevent overwriting in recursion\n");
emit_out("PUSHR R14 R15\t# Protect the old base pointer\n");
emit_out("COPY R13 R15\t# Copy new base pointer\n");
}
else if(X86 == Architecture)
{
emit_out("push_edi\t# Prevent overwriting in recursion\n");
emit_out("push_ebp\t# Protect the old base pointer\n");
emit_out("mov_edi,esp\t# Copy new base pointer\n");
}
else if(AMD64 == Architecture)
{
emit_out("push_rdi\t# Prevent overwriting in recursion\n");
emit_out("push_rbp\t# Protect the old base pointer\n");
emit_out("mov_rdi,rsp\t# Copy new base pointer\n");
}
else if(ARMV7L == Architecture)
{
emit_out("{R11} PUSH_ALWAYS\t# Prevent overwriting in recursion\n");
emit_out("{BP} PUSH_ALWAYS\t# Protect the old base pointer\n");
emit_out("'0' SP R11 NO_SHIFT MOVE_ALWAYS\t# Copy new base pointer\n");
}
else if(AARCH64 == Architecture)
{
emit_out("PUSH_X16\t# Protect a tmp register we're going to use\n");
emit_out("PUSH_LR\t# Protect the old return pointer (link)\n");
emit_out("PUSH_BP\t# Protect the old base pointer\n");
emit_out("SET_X16_FROM_SP\t# The base pointer to-be\n");
}
else if(RISCV32 == Architecture)
{
emit_out("RD_SP RS1_SP !-12 ADDI\t# Allocate stack\n");
emit_out("RS1_SP RS2_RA @4 SW\t# Protect the old return pointer\n");
emit_out("RS1_SP RS2_FP SW\t# Protect the old frame pointer\n");
emit_out("RS1_SP RS2_TP @8 SW\t# Protect temp register we are going to use\n");
emit_out("RD_TP RS1_SP MV\t# The base pointer to-be\n");
}
else if(RISCV64 == Architecture)
{
emit_out("RD_SP RS1_SP !-24 ADDI\t# Allocate stack\n");
emit_out("RS1_SP RS2_RA @8 SD\t# Protect the old return pointer\n");
emit_out("RS1_SP RS2_FP SD\t# Protect the old frame pointer\n");
emit_out("RS1_SP RS2_TP @16 SD\t# Protect temp register we are going to use\n");
emit_out("RD_TP RS1_SP MV\t# The base pointer to-be\n");
}
if(global_token->s[0] != ')')
{
expression();
require(NULL != global_token, "incomplete function call, received EOF instead of )\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#_process_expression1\n");
else if(X86 == Architecture) emit_out("push_eax\t#_process_expression1\n");
else if(AMD64 == Architecture) emit_out("push_rax\t#_process_expression1\n");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#_process_expression1\n");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#_process_expression1\n");
else if(RISCV32 == Architecture) emit_out("RD_SP RS1_SP !-4 ADDI\nRS1_SP RS2_A0 SW\t#_process_expression1\n");
else if(RISCV64 == Architecture) emit_out("RD_SP RS1_SP !-8 ADDI\nRS1_SP RS2_A0 SD\t#_process_expression1\n");
passed = 1;
while(global_token->s[0] == ',')
{
global_token = global_token->next;
require(NULL != global_token, "incomplete function call, received EOF instead of argument\n");
expression();
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#_process_expression2\n");
else if(X86 == Architecture) emit_out("push_eax\t#_process_expression2\n");
else if(AMD64 == Architecture) emit_out("push_rax\t#_process_expression2\n");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#_process_expression2\n");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#_process_expression2\n");
else if(RISCV32 == Architecture) emit_out("RD_SP RS1_SP !-4 ADDI\nRS1_SP RS2_A0 SW\t#_process_expression2\n");
else if(RISCV64 == Architecture) emit_out("RD_SP RS1_SP !-8 ADDI\nRS1_SP RS2_A0 SD\t#_process_expression2\n");
passed = passed + 1;
}
}
require_match("ERROR in process_expression_list\nNo ) was found\n", ")");
if(TRUE == bool)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("LOAD R0 R14 ");
emit_out(s);
emit_out("\nMOVE R14 R13\n");
emit_out("CALL R0 R15\n");
}
else if(X86 == Architecture)
{
emit_out("lea_eax,[ebp+DWORD] %");
emit_out(s);
emit_out("\nmov_eax,[eax]\n");
emit_out("mov_ebp,edi\n");
emit_out("call_eax\n");
}
else if(AMD64 == Architecture)
{
emit_out("lea_rax,[rbp+DWORD] %");
emit_out(s);
emit_out("\nmov_rax,[rax]\n");
emit_out("mov_rbp,rdi\n");
emit_out("call_rax\n");
}
else if(ARMV7L == Architecture)
{
emit_out("!");
emit_out(s);
emit_out(" R0 SUB BP ARITH_ALWAYS\n");
emit_out("!0 R0 LOAD32 R0 MEMORY\n");
emit_out("{LR} PUSH_ALWAYS\t# Protect the old link register\n");
emit_out("'0' R11 BP NO_SHIFT MOVE_ALWAYS\n");
emit_out("'3' R0 CALL_REG_ALWAYS\n");
emit_out("{LR} POP_ALWAYS\t# Prevent overwrite\n");
}
else if(AARCH64 == Architecture)
{
emit_out("SET_X0_FROM_BP\n");
emit_out("LOAD_W1_AHEAD\nSKIP_32_DATA\n%");
emit_out(s);
emit_out("\nSUB_X0_X0_X1\n");
emit_out("DEREF_X0\n");
emit_out("SET_BP_FROM_X16\n");
emit_out("SET_X16_FROM_X0\n");
emit_out("BLR_X16\n");
}
else if(RISCV32 == Architecture)
{
emit_out("RD_A0 RS1_FP !");
emit_out(s);
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A0 LW\n");
emit_out("RD_FP RS1_TP MV\n");
emit_out("RD_RA RS1_A0 JALR\n");
}
else if(RISCV64 == Architecture)
{
emit_out("RD_A0 RS1_FP !");
emit_out(s);
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A0 LD\n");
emit_out("RD_FP RS1_TP MV\n");
emit_out("RD_RA RS1_A0 JALR\n");
}
}
else
{
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture))
{
emit_out("MOVE R14 R13\n");
emit_out("LOADR R0 4\nJUMP 4\n&FUNCTION_");
emit_out(s);
emit_out("\nCALL R0 R15\n");
}
else if(X86 == Architecture)
{
emit_out("mov_ebp,edi\n");
emit_out("call %FUNCTION_");
emit_out(s);
emit_out("\n");
}
else if(AMD64 == Architecture)
{
emit_out("mov_rbp,rdi\n");
emit_out("call %FUNCTION_");
emit_out(s);
emit_out("\n");
}
else if(ARMV7L == Architecture)
{
emit_out("{LR} PUSH_ALWAYS\t# Protect the old link register\n");
emit_out("'0' R11 BP NO_SHIFT MOVE_ALWAYS\n");
emit_out("^~FUNCTION_");
emit_out(s);
emit_out(" CALL_ALWAYS\n");
emit_out("{LR} POP_ALWAYS\t# Restore the old link register\n");
}
else if(AARCH64 == Architecture)
{
emit_out("SET_BP_FROM_X16\n");
emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&FUNCTION_");
emit_out(s);
emit_out("\n");
emit_out("BLR_X16\n");
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("RD_FP RS1_TP MV\n");
emit_out("RD_RA $FUNCTION_");
emit_out(s);
emit_out(" JAL\n");
}
}
for(; passed > 0; passed = passed - 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# _process_expression_locals\n");
else if(X86 == Architecture) emit_out("pop_ebx\t# _process_expression_locals\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# _process_expression_locals\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# _process_expression_locals\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# _process_expression_locals\n");
else if(RISCV32 == Architecture) emit_out("RD_A1 RS1_SP LW\t# _process_expression_locals\nRD_SP RS1_SP !4 ADDI\n");
else if(RISCV64 == Architecture) emit_out("RD_A1 RS1_SP LD\t# _process_expression_locals\nRD_SP RS1_SP !8 ADDI\n");
}
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("POPR R14 R15\t# Restore old base pointer\n");
emit_out("POPR R13 R15\t# Prevent overwrite\n");
}
else if(X86 == Architecture)
{
emit_out("pop_ebp\t# Restore old base pointer\n");
emit_out("pop_edi\t# Prevent overwrite\n");
}
else if(AMD64 == Architecture)
{
emit_out("pop_rbp\t# Restore old base pointer\n");
emit_out("pop_rdi\t# Prevent overwrite\n");
}
else if(ARMV7L == Architecture)
{
emit_out("{BP} POP_ALWAYS\t# Restore old base pointer\n");
emit_out("{R11} POP_ALWAYS\t# Prevent overwrite\n");
}
else if(AARCH64 == Architecture)
{
emit_out("POP_BP\t# Restore the old base pointer\n");
emit_out("POP_LR\t# Restore the old return pointer (link)\n");
emit_out("POP_X16\t# Restore a register we used as tmp\n");
}
else if(RISCV32 == Architecture)
{
emit_out("RD_FP RS1_SP LW\t# Restore old frame pointer\n");
emit_out("RD_TP RS1_SP !8 LW\t# Restore temp register\n");
emit_out("RD_RA RS1_SP !4 LW\t# Restore return address\n");
emit_out("RD_SP RS1_SP !12 ADDI\t# Deallocate stack\n");
}
else if(RISCV64 == Architecture)
{
emit_out("RD_FP RS1_SP LD\t# Restore old frame pointer\n");
emit_out("RD_TP RS1_SP !16 LD\t# Restore temp register\n");
emit_out("RD_RA RS1_SP !8 LD\t# Restore return address\n");
emit_out("RD_SP RS1_SP !24 ADDI\t# Deallocate stack\n");
}
}
void constant_load(struct token_list* a)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("LOADI R0 ");
else if(X86 == Architecture) emit_out("mov_eax, %");
else if(AMD64 == Architecture) emit_out("mov_rax, %");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("RD_A0 ~");
emit_out(a->arguments->s);
emit_out(" LUI\nRD_A0 RS1_A0 !");
}
emit_out(a->arguments->s);
if(RISCV32 == Architecture) emit_out(" ADDI\n");
else if(RISCV64 == Architecture) emit_out(" ADDIW\n");
emit_out("\n");
}
char* load_value_signed(unsigned size)
{
if(size == 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD8 R0 R0 0\n";
else if(X86 == Architecture) return "movsx_eax,BYTE_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movsx_rax,BYTE_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "LOADS8 R0 LOAD R0 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "LDRSB_X0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "RD_A0 RS1_A0 LB\n";
}
else if(size == 2)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD16 R0 R0 0\n";
else if(X86 == Architecture) return "movsx_eax,WORD_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movsx_rax,WORD_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "LOADS16 R0 LOAD R0 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "LDRSH_X0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "RD_A0 RS1_A0 LH\n";
}
else if(size == 4)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD R0 R0 0\n";
else if(X86 == Architecture) return "mov_eax,[eax]\n";
else if(AMD64 == Architecture) return "movsx_rax,DWORD_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "!0 R0 LOAD32 R0 MEMORY\n";
else if(AARCH64 == Architecture) return "LDR_W0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "RD_A0 RS1_A0 LW\n";
}
else if(size == 8)
{
if(AMD64 == Architecture) return "mov_rax,[rax]\n";
else if(AARCH64 == Architecture) return "DEREF_X0\n";
else if(RISCV64 == Architecture) return "RD_A0 RS1_A0 LD\n";
}
line_error();
fputs(" Got unsupported size ", stderr);
fputs(int2str(size, 10, TRUE), stderr);
fputs(" when trying to load value.\n", stderr);
exit(EXIT_FAILURE);
}
char* load_value_unsigned(unsigned size)
{
if(size == 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOADU8 R0 R0 0\n";
else if(X86 == Architecture) return "movzx_eax,BYTE_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movzx_rax,BYTE_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "!0 R0 LOAD R0 MEMORY\n";
else if(AARCH64 == Architecture) return "DEREF_X0_BYTE\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "RD_A0 RS1_A0 LBU\n";
}
else if(size == 2)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOADU16 R0 R0 0\n";
else if(X86 == Architecture) return "movzx_eax,WORD_PTR_[eax]\n";
else if(AMD64 == Architecture) return "movzx_rax,WORD_PTR_[rax]\n";
else if(ARMV7L == Architecture) return "NO_OFFSET R0 LOAD R0 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "LDRH_W0_[X0]\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) return "RD_A0 RS1_A0 LHU\n";
}
else if(size == 4)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "LOAD R0 R0 0\n";
else if(X86 == Architecture) return "mov_eax,[eax]\n";
else if(AMD64 == Architecture) return "mov_eax,[rax]\n";
else if(ARMV7L == Architecture) return "!0 R0 LOAD32 R0 MEMORY\n";
else if(AARCH64 == Architecture) return "LDR_W0_[X0]\n";
else if(RISCV32 == Architecture) return "RD_A0 RS1_A0 LW\n";
else if(RISCV64 == Architecture) return "RD_A0 RS1_A0 LWU\n";
}
else if(size == 8)
{
if(AMD64 == Architecture) return "mov_rax,[rax]\n";
else if(AARCH64 == Architecture) return "DEREF_X0\n";
else if(RISCV64 == Architecture) return "RD_A0 RS1_A0 LD\n";
}
line_error();
fputs(" Got unsupported size ", stderr);
fputs(int2str(size, 10, TRUE), stderr);
fputs(" when trying to load value.\n", stderr);
exit(EXIT_FAILURE);
}
char* load_value(unsigned size, int is_signed)
{
if(is_signed) return load_value_signed(size);
return load_value_unsigned(size);
}
char* store_value(unsigned size)
{
if(size == 1)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "STORE8 R0 R1 0\n";
else if(X86 == Architecture) return "mov_[ebx],al\n";
else if(AMD64 == Architecture) return "mov_[rbx],al\n";
else if(ARMV7L == Architecture) return "!0 R0 STORE8 R1 MEMORY\n";
else if(AARCH64 == Architecture) return "STR_BYTE_W0_[X1]\n";
else if(RISCV32 == Architecture) return "RS1_A1 RS2_A0 SB\n";
else if(RISCV64 == Architecture) return "RS1_A1 RS2_A0 SB\n";
}
else if(size == 2)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "STORE16 R0 R1 0\n";
else if(X86 == Architecture) return "mov_[ebx],ax\n";
else if(AMD64 == Architecture) return "mov_[rbx],ax\n";
else if(ARMV7L == Architecture) return "NO_OFFSET R0 STORE16 R1 HALF_MEMORY\n";
else if(AARCH64 == Architecture) return "STRH_W0_[X1]\n";
else if(RISCV32 == Architecture || RISCV64 == Architecture) return "RS1_A1 RS2_A0 SH\n";
}
else if(size == 4)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) return "STORE R0 R1 0\n";
else if(X86 == Architecture) return "mov_[ebx],eax\n";
else if(AMD64 == Architecture) return "mov_[rbx],eax\n";
else if(ARMV7L == Architecture) return "!0 R0 STORE32 R1 MEMORY\n";
else if(AARCH64 == Architecture) return "STR_W0_[X1]\n";
else if(RISCV32 == Architecture || RISCV64 == Architecture) return "RS1_A1 RS2_A0 SW\n";
}
else if(size == 8)
{
if(AMD64 == Architecture) return "mov_[rbx],rax\n";
else if(AARCH64 == Architecture) return "STR_X0_[X1]\n";
else if(RISCV64 == Architecture) return "RS1_A1 RS2_A0 SD\n";
}
/* Should not happen but print error message. */
fputs("Got unsupported size ", stderr);
fputs(int2str(size, 10, TRUE), stderr);
fputs(" when storing number in register.\n", stderr);
line_error();
exit(EXIT_FAILURE);
}
int is_compound_assignment(char* token)
{
if(match("+=", token)) return TRUE;
else if(match("-=", token)) return TRUE;
else if(match("*=", token)) return TRUE;
else if(match("/=", token)) return TRUE;
else if(match("%=", token)) return TRUE;
else if(match("<<=", token)) return TRUE;
else if(match(">>=", token)) return TRUE;
else if(match("&=", token)) return TRUE;
else if(match("^=", token)) return TRUE;
else if(match("|=", token)) return TRUE;
return FALSE;
}
void postfix_expr_stub();
void variable_load(struct token_list* a, int num_dereference)
{
require(NULL != global_token, "incomplete variable load received\n");
if((match("FUNCTION", a->type->name) || match("FUNCTION*", a->type->name)) && match("(", global_token->s))
{
function_call(int2str(a->depth, 10, TRUE), TRUE);
return;
}
current_target = a->type;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("ADDI R0 R14 ");
else if(X86 == Architecture) emit_out("lea_eax,[ebp+DWORD] %");
else if(AMD64 == Architecture) emit_out("lea_rax,[rbp+DWORD] %");
else if(ARMV7L == Architecture) emit_out("!");
else if(AARCH64 == Architecture) emit_out("SET_X0_FROM_BP\nLOAD_W1_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 RS1_FP !");
emit_out(int2str(a->depth, 10, TRUE));
if(ARMV7L == Architecture) emit_out(" R0 SUB BP ARITH_ALWAYS");
else if(AARCH64 == Architecture) emit_out("\nSUB_X0_X0_X1\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" ADDI");
emit_out("\n");
if(TRUE == Address_of) return;
if(match(".", global_token->s))
{
postfix_expr_stub();
return;
}
if(!match("=", global_token->s) && !is_compound_assignment(global_token->s))
{
emit_out(load_value(current_target->size, current_target->is_signed));
}
while (num_dereference > 0)
{
current_target = current_target->type;
emit_out(load_value(current_target->size, current_target->is_signed));
num_dereference = num_dereference - 1;
}
}
void function_load(struct token_list* a)
{
require(NULL != global_token, "incomplete function load\n");
if(match("(", global_token->s))
{
function_call(a->s, FALSE);
return;
}
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture)) emit_out("LOADR R0 4\nJUMP 4\n&FUNCTION_");
else if(X86 == Architecture) emit_out("mov_eax, &FUNCTION_");
else if(AMD64 == Architecture) emit_out("lea_rax,[rip+DWORD] %FUNCTION_");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n&FUNCTION_");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n&FUNCTION_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 ~FUNCTION_");
emit_out(a->s);
if(RISCV32 == Architecture)
{
emit_out(" AUIPC\n");
emit_out("RD_A0 RS1_A0 !FUNCTION_");
emit_out(a->s);
emit_out(" ADDI");
}
else if(RISCV64 == Architecture)
{
emit_out(" AUIPC\n");
emit_out("RD_A0 RS1_A0 !FUNCTION_");
emit_out(a->s);
emit_out(" ADDIW");
}
emit_out("\n");
}
void global_load(struct token_list* a)
{
current_target = a->type;
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture)) emit_out("LOADR R0 4\nJUMP 4\n&GLOBAL_");
else if(X86 == Architecture) emit_out("mov_eax, &GLOBAL_");
else if(AMD64 == Architecture) emit_out("lea_rax,[rip+DWORD] %GLOBAL_");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n&GLOBAL_");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n&GLOBAL_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 ~GLOBAL_");
emit_out(a->s);
if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out(" AUIPC\n");
emit_out("RD_A0 RS1_A0 !GLOBAL_");
emit_out(a->s);
emit_out(" ADDI");
}
emit_out("\n");
require(NULL != global_token, "unterminated global load\n");
if(TRUE == Address_of) return;
if(match(".", global_token->s))
{
postfix_expr_stub();
return;
}
if(match("=", global_token->s) || is_compound_assignment(global_token->s)) return;
emit_out(load_value(register_size, current_target->is_signed));
}
/*
* primary-expr:
* FAILURE
* "String"
* 'Char'
* [0-9]*
* [a-z,A-Z]*
* ( expression )
*/
void primary_expr_failure()
{
require(NULL != global_token, "hit EOF when expecting primary expression\n");
line_error();
fputs("Received ", stderr);
fputs(global_token->s, stderr);
fputs(" in primary_expr\n", stderr);
exit(EXIT_FAILURE);
}
void primary_expr_string()
{
char* number_string = int2str(current_count, 10, TRUE);
current_count = current_count + 1;
if((KNIGHT_NATIVE == Architecture) || (KNIGHT_POSIX == Architecture)) emit_out("LOADR R0 4\nJUMP 4\n&STRING_");
else if(X86 == Architecture) emit_out("mov_eax, &STRING_");
else if(AMD64 == Architecture) emit_out("lea_rax,[rip+DWORD] %STRING_");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n&STRING_");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n&STRING_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 ~STRING_");
uniqueID_out(function->s, number_string);
if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("AUIPC\n");
emit_out("RD_A0 RS1_A0 !STRING_");
uniqueID_out(function->s, number_string);
emit_out("ADDI\n");
}
/* The target */
strings_list = emit(":STRING_", strings_list);
strings_list = uniqueID(function->s, strings_list, number_string);
/* catch case of just "foo" from segfaulting */
require(NULL != global_token->next, "a string by itself is not valid C\n");
/* Parse the string */
if('"' != global_token->next->s[0])
{
strings_list = emit(parse_string(global_token->s), strings_list);
global_token = global_token->next;
}
else
{
char* s = calloc(MAX_STRING, sizeof(char));
/* prefix leading string */
s[0] = '"';
int i = 1;
int j;
while('"' == global_token->s[0])
{
/* Step past the leading '"' */
j = 1;
/* Copy the rest of the string as is */
while(0 != global_token->s[j])
{
require(i < MAX_STRING, "concat string exceeded max string length\n");
s[i] = global_token->s[j];
i = i + 1;
j = j + 1;
}
/* Move on to the next token */
global_token = global_token->next;
require(NULL != global_token, "multi-string null is not valid C\n");
}
/* Now use it */
strings_list = emit(parse_string(s), strings_list);
}
}
void primary_expr_char()
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("LOADI R0 ");
else if(X86 == Architecture) emit_out("mov_eax, %");
else if(AMD64 == Architecture) emit_out("mov_rax, %");
else if(ARMV7L == Architecture) emit_out("!");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 !");
emit_out(int2str(escape_lookup(global_token->s + 1), 10, TRUE));
if(ARMV7L == Architecture) emit_out(" R0 LOADI8_ALWAYS");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" ADDI");
emit_out("\n");
global_token = global_token->next;
}
int hex2char(int c)
{
if((c >= 0) && (c <= 9)) return (c + 48);
else if((c >= 10) && (c <= 15)) return (c + 55);
else return -1;
}
char* number_to_hex(int a, int bytes)
{
require(bytes > 0, "number to hex must have a positive number of bytes greater than zero\n");
char* result = calloc(1 + (bytes << 1), sizeof(char));
if(NULL == result)
{
fputs("calloc failed in number_to_hex\n", stderr);
exit(EXIT_FAILURE);
}
int i = 0;
int divisor = (bytes << 3);
require(divisor > 0, "unexpected wrap around in number_to_hex\n");
/* Simply collect numbers until divisor is gone */
while(0 != divisor)
{
divisor = divisor - 4;
result[i] = hex2char((a >> divisor) & 0xF);
i = i + 1;
}
return result;
}
void primary_expr_number()
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
int size = strtoint(global_token->s);
if((32767 > size) && (size > -32768))
{
emit_out("LOADI R0 ");
emit_out(global_token->s);
}
else
{
emit_out("LOADR R0 4\nJUMP 4\n'");
emit_out(number_to_hex(size, register_size));
emit_out("'");
}
}
else if(X86 == Architecture)
{
emit_out("mov_eax, %");
emit_out(global_token->s);
}
else if(AMD64 == Architecture)
{
emit_out("mov_rax, %");
emit_out(global_token->s);
}
else if(ARMV7L == Architecture)
{
emit_out("!0 R0 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
emit_out(global_token->s);
}
else if(AARCH64 == Architecture)
{
emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
emit_out(global_token->s);
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
int size = strtoint(global_token->s);
if((2047 > size) && (size > -2048))
{
emit_out("RD_A0 !");
emit_out(global_token->s);
emit_out(" ADDI");
}
else if (0 == (size >> 30))
{
emit_out("RD_A0 ~");
emit_out(global_token->s);
emit_out(" LUI\n");
emit_out("RD_A0 RS1_A0 !");
emit_out(global_token->s);
emit_out(" ADDI");
}
else
{
int high = size >> 30;
int low = ((size >> 30) << 30) ^ size;
emit_out("RD_A0 ~");
emit_out(int2str(high, 10, TRUE));
emit_out(" LUI\n");
emit_out("RD_A0 RS1_A0 !");
emit_out(int2str(high, 10, TRUE));
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A0 RS2_X30 SLLI\n");
emit_out("RD_T1 ~");
emit_out(int2str(low, 10, TRUE));
emit_out(" LUI\n");
emit_out("RD_T1 RS1_T1 !");
emit_out(int2str(low, 10, TRUE));
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A0 RS2_T1 OR\n");
}
}
emit_out("\n");
global_token = global_token->next;
}
void primary_expr_variable()
{
int num_dereference = 0;
while(global_token->s[0] == '*') {
global_token = global_token->next;
require(NULL != global_token, "Walked off the end of a variable dereference\n");
num_dereference = num_dereference + 1;
}
char* s = global_token->s;
global_token = global_token->next;
struct token_list* a = sym_lookup(s, global_constant_list);
if(NULL != a)
{
constant_load(a);
return;
}
a = sym_lookup(s, function->locals);
if(NULL != a)
{
variable_load(a, num_dereference);
return;
}
a = sym_lookup(s, function->arguments);
if(NULL != a)
{
variable_load(a, num_dereference);
return;
}
a = sym_lookup(s, global_function_list);
if(NULL != a)
{
function_load(a);
return;
}
a = sym_lookup(s, global_symbol_list);
if(NULL != a)
{
global_load(a);
return;
}
line_error();
fputs(s ,stderr);
fputs(" is not a defined symbol\n", stderr);
exit(EXIT_FAILURE);
}
void primary_expr();
struct type* promote_type(struct type* a, struct type* b)
{
require(NULL != b, "impossible case 1 in promote_type\n");
require(NULL != a, "impossible case 2 in promote_type\n");
if(a == b) return a;
struct type* i;
for(i = global_types; NULL != i; i = i->next)
{
if(a->name == i->name) break;
if(b->name == i->name) break;
if(a->name == i->indirect->name) break;
if(b->name == i->indirect->name) break;
if(a->name == i->indirect->indirect->name) break;
if(b->name == i->indirect->indirect->name) break;
}
require(NULL != i, "impossible case 3 in promote_type\n");
return i;
}
void common_recursion(FUNCTION f)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#_common_recursion\n");
else if(X86 == Architecture) emit_out("push_eax\t#_common_recursion\n");
else if(AMD64 == Architecture) emit_out("push_rax\t#_common_recursion\n");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#_common_recursion\n");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#_common_recursion\n");
else if(RISCV32 == Architecture) emit_out("RD_SP RS1_SP !-4 ADDI\t# _common_recursion\nRS1_SP RS2_A0 SW\n");
else if(RISCV64 == Architecture) emit_out("RD_SP RS1_SP !-8 ADDI\t# _common_recursion\nRS1_SP RS2_A0 SD\n");
struct type* last_type = current_target;
global_token = global_token->next;
require(NULL != global_token, "Received EOF in common_recursion\n");
f();
current_target = promote_type(current_target, last_type);
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# _common_recursion\n");
else if(X86 == Architecture) emit_out("pop_ebx\t# _common_recursion\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# _common_recursion\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# _common_recursion\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# _common_recursion\n");
else if(RISCV32 == Architecture) emit_out("RD_A1 RS1_SP LW\nRD_SP RS1_SP !4 ADDI\t# _common_recursion\n");
else if(RISCV64 == Architecture) emit_out("RD_A1 RS1_SP LD\nRD_SP RS1_SP !8 ADDI\t# _common_recursion\n");
}
void general_recursion(FUNCTION f, char* s, char* name, FUNCTION iterate)
{
require(NULL != global_token, "Received EOF in general_recursion\n");
if(match(name, global_token->s))
{
common_recursion(f);
emit_out(s);
iterate();
}
}
void arithmetic_recursion(FUNCTION f, char* s1, char* s2, char* name, FUNCTION iterate)
{
require(NULL != global_token, "Received EOF in arithmetic_recursion\n");
if(match(name, global_token->s))
{
common_recursion(f);
if(NULL == current_target)
{
emit_out(s1);
}
else if(current_target->is_signed)
{
emit_out(s1);
}
else
{
emit_out(s2);
}
iterate();
}
}
/*
* postfix-expr:
* primary-expr
* postfix-expr [ expression ]
* postfix-expr ( expression-list-opt )
* postfix-expr -> member
* postfix-expr . member
*/
struct type* lookup_member(struct type* parent, char* name);
void postfix_expr_arrow()
{
emit_out("# looking up offset\n");
global_token = global_token->next;
require(NULL != global_token, "naked -> not allowed\n");
struct type* i = lookup_member(current_target, global_token->s);
current_target = i->type;
global_token = global_token->next;
require(NULL != global_token, "Unterminated -> expression not allowed\n");
if(0 != i->offset)
{
emit_out("# -> offset calculation\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("ADDUI R0 R0 ");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\n");
}
else if(X86 == Architecture)
{
emit_out("mov_ebx, %");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\nadd_eax,ebx\n");
}
else if(AMD64 == Architecture)
{
emit_out("mov_rbx, %");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\nadd_rax,rbx\n");
}
else if(ARMV7L == Architecture)
{
emit_out("!0 R1 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\n'0' R0 R0 ADD R1 ARITH2_ALWAYS\n");
}
else if(AARCH64 == Architecture)
{
emit_out("LOAD_W1_AHEAD\nSKIP_32_DATA\n%");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\nADD_X0_X1_X0\n");
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("RD_A1 !");
emit_out(int2str(i->offset, 10, TRUE));
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A1 RS2_A0 ADD\n");
}
}
/* We don't yet support assigning structs to structs */
if((!match("=", global_token->s) && !is_compound_assignment(global_token->s) && (register_size >= i->size)))
{
emit_out(load_value(i->size, i->is_signed));
}
}
void postfix_expr_dot()
{
maybe_bootstrap_error("Member access using .");
emit_out("# looking up offset\n");
global_token = global_token->next;
require(NULL != global_token, "naked . not allowed\n");
struct type* i = lookup_member(current_target, global_token->s);
current_target = i->type;
global_token = global_token->next;
require(NULL != global_token, "Unterminated . expression not allowed\n");
if(0 != i->offset)
{
emit_out("# . offset calculation\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
emit_out("ADDUI R0 R0 ");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\n");
}
else if(X86 == Architecture)
{
emit_out("mov_ebx, %");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\nadd_eax,ebx\n");
}
else if(AMD64 == Architecture)
{
emit_out("mov_rbx, %");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\nadd_rax,rbx\n");
}
else if(ARMV7L == Architecture)
{
emit_out("!0 R1 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\n'0' R0 R0 ADD R1 ARITH2_ALWAYS\n");
}
else if(AARCH64 == Architecture)
{
emit_out("LOAD_W1_AHEAD\nSKIP_32_DATA\n%");
emit_out(int2str(i->offset, 10, TRUE));
emit_out("\nADD_X0_X1_X0\n");
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("RD_A1 !");
emit_out(int2str(i->offset, 10, TRUE));
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A1 RS2_A0 ADD\n");
}
}
if(match("=", global_token->s) || is_compound_assignment(global_token->s)) return;
if(match("[", global_token->s)) return;
emit_out(load_value(current_target->size, current_target->is_signed));
}
void postfix_expr_array()
{
struct type* array = current_target;
common_recursion(expression);
current_target = array;
require(NULL != current_target, "Arrays only apply to variables\n");
char* assign = load_value(register_size, current_target->is_signed);
/* Add support for Ints */
if(match("char*", current_target->name))
{
assign = load_value(1, TRUE);
}
else
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R1 R15\nLOADI R1 ");
else if(X86 == Architecture) emit_out("push_ebx\nmov_ebx, %");
else if(AMD64 == Architecture) emit_out("push_rbx\nmov_rbx, %");
else if(ARMV7L == Architecture) emit_out("{R1} PUSH_ALWAYS\n!0 R1 LOAD32 R15 MEMORY\n~0 JUMP_ALWAYS\n%");
else if(AARCH64 == Architecture) emit_out("PUSH_X1\nLOAD_W1_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A2 RS1_A1 ADDI\nRD_A1 !");
emit_out(int2str(current_target->type->size, 10, TRUE));
if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" ADDI");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("\nMULU R0 R1 R0\nPOPR R1 R15\n");
else if(X86 == Architecture) emit_out("\nmul_ebx\npop_ebx\n");
else if(AMD64 == Architecture) emit_out("\nmul_rbx\npop_rbx\n");
else if(ARMV7L == Architecture) emit_out("\n'9' R0 '0' R1 MUL R0 ARITH2_ALWAYS\n{R1} POP_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("\nMUL_X0_X1_X0\nPOP_X1\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("\nRD_A0 RS1_A1 RS2_A0 MUL\nRD_A1 RS1_A2 ADDI\n");
}
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("ADD R0 R0 R1\n");
else if(X86 == Architecture) emit_out("add_eax,ebx\n");
else if(AMD64 == Architecture) emit_out("add_rax,rbx\n");
else if(ARMV7L == Architecture) emit_out("'0' R0 R0 ADD R1 ARITH2_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("ADD_X0_X1_X0\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 RS1_A1 RS2_A0 ADD\n");
require_match("ERROR in postfix_expr\nMissing ]\n", "]");
require(NULL != global_token, "truncated array expression\n");
if(match("=", global_token->s) || is_compound_assignment(global_token->s) || match(".", global_token->s))
{
assign = "";
}
if(match("[", global_token->s))
{
current_target = current_target->type;
}
emit_out(assign);
}
/*
* unary-expr:
* &postfix-expr
* - postfix-expr
* !postfix-expr
* sizeof ( type )
*/
struct type* type_name();
void unary_expr_sizeof()
{
global_token = global_token->next;
require(NULL != global_token, "Received EOF when starting sizeof\n");
require_match("ERROR in unary_expr\nMissing (\n", "(");
struct type* a = type_name();
require_match("ERROR in unary_expr\nMissing )\n", ")");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("LOADUI R0 ");
else if(X86 == Architecture) emit_out("mov_eax, %");
else if(AMD64 == Architecture) emit_out("mov_rax, %");
else if(ARMV7L == Architecture) emit_out("!");
else if(AARCH64 == Architecture) emit_out("LOAD_W0_AHEAD\nSKIP_32_DATA\n%");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 !");
emit_out(int2str(a->size, 10, TRUE));
if(ARMV7L == Architecture) emit_out(" R0 LOADI8_ALWAYS");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" ADDI");
emit_out("\n");
}
void postfix_expr_stub()
{
require(NULL != global_token, "Unexpected EOF, improperly terminated primary expression\n");
if(match("[", global_token->s))
{
postfix_expr_array();
postfix_expr_stub();
}
if(match("->", global_token->s))
{
postfix_expr_arrow();
postfix_expr_stub();
}
if(match(".", global_token->s))
{
postfix_expr_dot();
postfix_expr_stub();
}
}
void postfix_expr()
{
primary_expr();
postfix_expr_stub();
}
/*
* additive-expr:
* postfix-expr
* additive-expr * postfix-expr
* additive-expr / postfix-expr
* additive-expr % postfix-expr
* additive-expr + postfix-expr
* additive-expr - postfix-expr
* additive-expr << postfix-expr
* additive-expr >> postfix-expr
*/
void additive_expr_stub()
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
arithmetic_recursion(postfix_expr, "ADD R0 R1 R0\n", "ADDU R0 R1 R0\n", "+", additive_expr_stub);
arithmetic_recursion(postfix_expr, "SUB R0 R1 R0\n", "SUBU R0 R1 R0\n", "-", additive_expr_stub);
arithmetic_recursion(postfix_expr, "MUL R0 R1 R0\n", "MULU R0 R1 R0\n", "*", additive_expr_stub);
arithmetic_recursion(postfix_expr, "DIV R0 R1 R0\n", "DIVU R0 R1 R0\n", "/", additive_expr_stub);
arithmetic_recursion(postfix_expr, "MOD R0 R1 R0\n", "MODU R0 R1 R0\n", "%", additive_expr_stub);
arithmetic_recursion(postfix_expr, "SAL R0 R1 R0\n", "SL0 R0 R1 R0\n", "<<", additive_expr_stub);
arithmetic_recursion(postfix_expr, "SAR R0 R1 R0\n", "SR0 R0 R1 R0\n", ">>", additive_expr_stub);
}
else if(X86 == Architecture)
{
arithmetic_recursion(postfix_expr, "add_eax,ebx\n", "add_eax,ebx\n", "+", additive_expr_stub);
arithmetic_recursion(postfix_expr, "sub_ebx,eax\nmov_eax,ebx\n", "sub_ebx,eax\nmov_eax,ebx\n", "-", additive_expr_stub);
arithmetic_recursion(postfix_expr, "imul_ebx\n", "mul_ebx\n", "*", additive_expr_stub);
arithmetic_recursion(postfix_expr, "xchg_ebx,eax\ncdq\nidiv_ebx\n", "xchg_ebx,eax\nmov_edx, %0\ndiv_ebx\n", "/", additive_expr_stub);
arithmetic_recursion(postfix_expr, "xchg_ebx,eax\ncdq\nidiv_ebx\nmov_eax,edx\n", "xchg_ebx,eax\nmov_edx, %0\ndiv_ebx\nmov_eax,edx\n", "%", additive_expr_stub);
arithmetic_recursion(postfix_expr, "mov_ecx,eax\nmov_eax,ebx\nsal_eax,cl\n", "mov_ecx,eax\nmov_eax,ebx\nshl_eax,cl\n", "<<", additive_expr_stub);
arithmetic_recursion(postfix_expr, "mov_ecx,eax\nmov_eax,ebx\nsar_eax,cl\n", "mov_ecx,eax\nmov_eax,ebx\nshr_eax,cl\n", ">>", additive_expr_stub);
}
else if(AMD64 == Architecture)
{
arithmetic_recursion(postfix_expr, "add_rax,rbx\n", "add_rax,rbx\n", "+", additive_expr_stub);
arithmetic_recursion(postfix_expr, "sub_rbx,rax\nmov_rax,rbx\n", "sub_rbx,rax\nmov_rax,rbx\n", "-", additive_expr_stub);
arithmetic_recursion(postfix_expr, "imul_rbx\n", "mul_rbx\n", "*", additive_expr_stub);
arithmetic_recursion(postfix_expr, "xchg_rbx,rax\ncqo\nidiv_rbx\n", "xchg_rbx,rax\nmov_rdx, %0\ndiv_rbx\n", "/", additive_expr_stub);
arithmetic_recursion(postfix_expr, "xchg_rbx,rax\ncqo\nidiv_rbx\nmov_rax,rdx\n", "xchg_rbx,rax\nmov_rdx, %0\ndiv_rbx\nmov_rax,rdx\n", "%", additive_expr_stub);
arithmetic_recursion(postfix_expr, "mov_rcx,rax\nmov_rax,rbx\nsal_rax,cl\n", "mov_rcx,rax\nmov_rax,rbx\nshl_rax,cl\n", "<<", additive_expr_stub);
arithmetic_recursion(postfix_expr, "mov_rcx,rax\nmov_rax,rbx\nsar_rax,cl\n", "mov_rcx,rax\nmov_rax,rbx\nshr_rax,cl\n", ">>", additive_expr_stub);
}
else if(ARMV7L == Architecture)
{
arithmetic_recursion(postfix_expr, "'0' R0 R0 ADD R1 ARITH2_ALWAYS\n", "'0' R0 R0 ADD R1 ARITH2_ALWAYS\n", "+", additive_expr_stub);
arithmetic_recursion(postfix_expr, "'0' R0 R0 SUB R1 ARITH2_ALWAYS\n", "'0' R0 R0 SUB R1 ARITH2_ALWAYS\n", "-", additive_expr_stub);
arithmetic_recursion(postfix_expr, "'9' R0 '0' R1 MULS R0 ARITH2_ALWAYS\n", "'9' R0 '0' R1 MUL R0 ARITH2_ALWAYS\n", "*", additive_expr_stub);
arithmetic_recursion(postfix_expr, "{LR} PUSH_ALWAYS\n^~divides CALL_ALWAYS\n{LR} POP_ALWAYS\n", "{LR} PUSH_ALWAYS\n^~divide CALL_ALWAYS\n{LR} POP_ALWAYS\n", "/", additive_expr_stub);
arithmetic_recursion(postfix_expr, "{LR} PUSH_ALWAYS\n^~moduluss CALL_ALWAYS\n{LR} POP_ALWAYS\n", "{LR} PUSH_ALWAYS\n^~modulus CALL_ALWAYS\n{LR} POP_ALWAYS\n", "%", additive_expr_stub);
arithmetic_recursion(postfix_expr, "LEFT R1 R0 R0 SHIFT AUX_ALWAYS\n", "LEFT R1 R0 R0 SHIFT AUX_ALWAYS\n", "<<", additive_expr_stub);
arithmetic_recursion(postfix_expr, "ARITH_RIGHT R1 R0 R0 SHIFT AUX_ALWAYS\n", "RIGHT R1 R0 R0 SHIFT AUX_ALWAYS\n", ">>", additive_expr_stub);
}
else if(AARCH64 == Architecture)
{
general_recursion(postfix_expr, "ADD_X0_X1_X0\n", "+", additive_expr_stub);
general_recursion(postfix_expr, "SUB_X0_X1_X0\n", "-", additive_expr_stub);
general_recursion(postfix_expr, "MUL_X0_X1_X0\n", "*", additive_expr_stub);
arithmetic_recursion(postfix_expr, "SDIV_X0_X1_X0\n", "UDIV_X0_X1_X0\n", "/", additive_expr_stub);
arithmetic_recursion(postfix_expr, "SDIV_X2_X1_X0\nMSUB_X0_X0_X2_X1\n", "UDIV_X2_X1_X0\nMSUB_X0_X0_X2_X1\n", "%", additive_expr_stub);
general_recursion(postfix_expr, "LSHIFT_X0_X1_X0\n", "<<", additive_expr_stub);
arithmetic_recursion(postfix_expr, "ARITH_RSHIFT_X0_X1_X0\n", "LOGICAL_RSHIFT_X0_X1_X0\n", ">>", additive_expr_stub);
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
general_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 ADD\n", "+", additive_expr_stub);
general_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 SUB\n", "-", additive_expr_stub);
general_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 MUL\n", "*", additive_expr_stub);
arithmetic_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 DIV\n", "RD_A0 RS1_A1 RS2_A0 DIVU\n", "/", additive_expr_stub);
arithmetic_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 REM\n", "RD_A0 RS1_A1 RS2_A0 REMU\n", "%", additive_expr_stub);
general_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 SLL\n", "<<", additive_expr_stub);
arithmetic_recursion(postfix_expr, "RD_A0 RS1_A1 RS2_A0 SRA\n", "RD_A0 RS1_A1 RS2_A0 SRL\n", ">>", additive_expr_stub);
}
}
void additive_expr()
{
postfix_expr();
additive_expr_stub();
}
/*
* relational-expr:
* additive_expr
* relational-expr < additive_expr
* relational-expr <= additive_expr
* relational-expr >= additive_expr
* relational-expr > additive_expr
*/
void relational_expr_stub()
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
arithmetic_recursion(additive_expr, "CMP R0 R1 R0\nSET.L R0 R0 1\n", "CMPU R0 R1 R0\nSET.L R0 R0 1\n", "<", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP R0 R1 R0\nSET.LE R0 R0 1\n", "CMPU R0 R1 R0\nSET.LE R0 R0 1\n", "<=", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP R0 R1 R0\nSET.GE R0 R0 1\n", "CMPU R0 R1 R0\nSET.GE R0 R0 1\n", ">=", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP R0 R1 R0\nSET.G R0 R0 1\n", "CMPU R0 R1 R0\nSET.G R0 R0 1\n", ">", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP R0 R1 R0\nSET.E R0 R0 1\n", "CMPU R0 R1 R0\nSET.E R0 R0 1\n", "==", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP R0 R1 R0\nSET.NE R0 R0 1\n", "CMPU R0 R1 R0\nSET.NE R0 R0 1\n", "!=", relational_expr_stub);
}
else if(X86 == Architecture)
{
arithmetic_recursion(additive_expr, "cmp\nsetl_al\nmovzx_eax,al\n", "cmp\nsetb_al\nmovzx_eax,al\n", "<", relational_expr_stub);
arithmetic_recursion(additive_expr, "cmp\nsetle_al\nmovzx_eax,al\n", "cmp\nsetbe_al\nmovzx_eax,al\n", "<=", relational_expr_stub);
arithmetic_recursion(additive_expr, "cmp\nsetge_al\nmovzx_eax,al\n", "cmp\nsetae_al\nmovzx_eax,al\n", ">=", relational_expr_stub);
arithmetic_recursion(additive_expr, "cmp\nsetg_al\nmovzx_eax,al\n", "cmp\nseta_al\nmovzx_eax,al\n", ">", relational_expr_stub);
general_recursion(additive_expr, "cmp\nsete_al\nmovzx_eax,al\n", "==", relational_expr_stub);
general_recursion(additive_expr, "cmp\nsetne_al\nmovzx_eax,al\n", "!=", relational_expr_stub);
}
else if(AMD64 == Architecture)
{
arithmetic_recursion(additive_expr, "cmp_rbx,rax\nsetl_al\nmovzx_rax,al\n", "cmp_rbx,rax\nsetb_al\nmovzx_rax,al\n", "<", relational_expr_stub);
arithmetic_recursion(additive_expr, "cmp_rbx,rax\nsetle_al\nmovzx_rax,al\n", "cmp_rbx,rax\nsetbe_al\nmovzx_rax,al\n", "<=", relational_expr_stub);
arithmetic_recursion(additive_expr, "cmp_rbx,rax\nsetge_al\nmovzx_rax,al\n", "cmp_rbx,rax\nsetae_al\nmovzx_rax,al\n", ">=", relational_expr_stub);
arithmetic_recursion(additive_expr, "cmp_rbx,rax\nsetg_al\nmovzx_rax,al\n", "cmp_rbx,rax\nseta_al\nmovzx_rax,al\n", ">", relational_expr_stub);
general_recursion(additive_expr, "cmp_rbx,rax\nsete_al\nmovzx_rax,al\n", "==", relational_expr_stub);
general_recursion(additive_expr, "cmp_rbx,rax\nsetne_al\nmovzx_rax,al\n", "!=", relational_expr_stub);
}
else if(ARMV7L == Architecture)
{
arithmetic_recursion(additive_expr, "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_L\n", "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_LO\n", "<", relational_expr_stub);
arithmetic_recursion(additive_expr, "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_LE\n", "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_LS\n", "<=", relational_expr_stub);
arithmetic_recursion(additive_expr, "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_GE\n", "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_HS\n", ">=", relational_expr_stub);
arithmetic_recursion(additive_expr, "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_G\n", "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_HI\n", ">", relational_expr_stub);
general_recursion(additive_expr, "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_EQUAL\n", "==", relational_expr_stub);
general_recursion(additive_expr, "'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_NE\n", "!=", relational_expr_stub);
}
else if(AARCH64 == Architecture)
{
arithmetic_recursion(additive_expr, "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_LT\nSET_X0_TO_0\n", "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_LO\nSET_X0_TO_0\n", "<", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_LE\nSET_X0_TO_0\n", "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_LS\nSET_X0_TO_0\n", "<=", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_GE\nSET_X0_TO_0\n", "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_HS\nSET_X0_TO_0\n", ">=", relational_expr_stub);
arithmetic_recursion(additive_expr, "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_GT\nSET_X0_TO_0\n", "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_HI\nSET_X0_TO_0\n", ">", relational_expr_stub);
general_recursion(additive_expr, "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_EQ\nSET_X0_TO_0\n", "==", relational_expr_stub);
general_recursion(additive_expr, "CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_NE\nSET_X0_TO_0\n", "!=", relational_expr_stub);
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
arithmetic_recursion(additive_expr, "RD_A0 RS1_A1 RS2_A0 SLT\n", "RD_A0 RS1_A1 RS2_A0 SLTU\n", "<", relational_expr_stub);
arithmetic_recursion(additive_expr, "RD_A0 RS1_A0 RS2_A1 SLT\nRD_A0 RS1_A0 !1 XORI\n", "RD_A0 RS1_A0 RS2_A1 SLTU\nRD_A0 RS1_A0 !1 XORI\n", "<=", relational_expr_stub);
arithmetic_recursion(additive_expr, "RD_A0 RS1_A1 RS2_A0 SLT\nRD_A0 RS1_A0 !1 XORI\n", "RD_A0 RS1_A1 RS2_A0 SLTU\nRD_A0 RS1_A0 !1 XORI\n", ">=", relational_expr_stub);
arithmetic_recursion(additive_expr, "RD_A0 RS1_A0 RS2_A1 SLT\n", "RD_A0 RS1_A0 RS2_A1 SLTU\n", ">", relational_expr_stub);
general_recursion(additive_expr, "RD_A0 RS1_A0 RS2_A1 SUB\nRD_A0 RS1_A0 !1 SLTIU\n", "==", relational_expr_stub);
general_recursion(additive_expr, "RD_A0 RS1_A0 RS2_A1 SUB\nRD_A0 RS2_A0 SLTU\n", "!=", relational_expr_stub);
}
}
void relational_expr()
{
additive_expr();
relational_expr_stub();
}
/*
* bitwise-expr:
* relational-expr
* bitwise-expr & bitwise-expr
* bitwise-expr && bitwise-expr
* bitwise-expr | bitwise-expr
* bitwise-expr || bitwise-expr
* bitwise-expr ^ bitwise-expr
*/
void bitwise_expr_stub()
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
general_recursion(relational_expr, "AND R0 R0 R1\n", "&", bitwise_expr_stub);
general_recursion(relational_expr, "AND R0 R0 R1\n", "&&", bitwise_expr_stub);
general_recursion(relational_expr, "OR R0 R0 R1\n", "|", bitwise_expr_stub);
general_recursion(relational_expr, "OR R0 R0 R1\n", "||", bitwise_expr_stub);
general_recursion(relational_expr, "XOR R0 R0 R1\n", "^", bitwise_expr_stub);
}
else if(X86 == Architecture)
{
general_recursion(relational_expr, "and_eax,ebx\n", "&", bitwise_expr_stub);
general_recursion(relational_expr, "and_eax,ebx\n", "&&", bitwise_expr_stub);
general_recursion(relational_expr, "or_eax,ebx\n", "|", bitwise_expr_stub);
general_recursion(relational_expr, "or_eax,ebx\n", "||", bitwise_expr_stub);
general_recursion(relational_expr, "xor_eax,ebx\n", "^", bitwise_expr_stub);
}
else if(AMD64 == Architecture)
{
general_recursion(relational_expr, "and_rax,rbx\n", "&", bitwise_expr_stub);
general_recursion(relational_expr, "and_rax,rbx\n", "&&", bitwise_expr_stub);
general_recursion(relational_expr, "or_rax,rbx\n", "|", bitwise_expr_stub);
general_recursion(relational_expr, "or_rax,rbx\n", "||", bitwise_expr_stub);
general_recursion(relational_expr, "xor_rax,rbx\n", "^", bitwise_expr_stub);
}
else if(ARMV7L == Architecture)
{
general_recursion(relational_expr, "NO_SHIFT R0 R0 AND R1 ARITH2_ALWAYS\n", "&", bitwise_expr_stub);
general_recursion(relational_expr, "NO_SHIFT R0 R0 AND R1 ARITH2_ALWAYS\n", "&&", bitwise_expr_stub);
general_recursion(relational_expr, "NO_SHIFT R0 R0 OR R1 AUX_ALWAYS\n", "|", bitwise_expr_stub);
general_recursion(relational_expr, "NO_SHIFT R0 R0 OR R1 AUX_ALWAYS\n", "||", bitwise_expr_stub);
general_recursion(relational_expr, "'0' R0 R0 XOR R1 ARITH2_ALWAYS\n", "^", bitwise_expr_stub);
}
else if(AARCH64 == Architecture)
{
general_recursion(relational_expr, "AND_X0_X1_X0\n", "&", bitwise_expr_stub);
general_recursion(relational_expr, "AND_X0_X1_X0\n", "&&", bitwise_expr_stub);
general_recursion(relational_expr, "OR_X0_X1_X0\n", "|", bitwise_expr_stub);
general_recursion(relational_expr, "OR_X0_X1_X0\n", "||", bitwise_expr_stub);
general_recursion(relational_expr, "XOR_X0_X1_X0\n", "^", bitwise_expr_stub);
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
general_recursion(relational_expr, "RD_A0 RS1_A1 RS2_A0 AND\n", "&", bitwise_expr_stub);
general_recursion(relational_expr, "RD_A0 RS1_A1 RS2_A0 AND\n", "&&", bitwise_expr_stub);
general_recursion(relational_expr, "RD_A0 RS1_A1 RS2_A0 OR\n", "|", bitwise_expr_stub);
general_recursion(relational_expr, "RD_A0 RS1_A1 RS2_A0 OR\n", "||", bitwise_expr_stub);
general_recursion(relational_expr, "RD_A0 RS1_A1 RS2_A0 XOR\n", "^", bitwise_expr_stub);
}
}
void bitwise_expr()
{
relational_expr();
bitwise_expr_stub();
}
/*
* expression:
* bitwise-or-expr
* bitwise-or-expr = expression
*/
void primary_expr()
{
require(NULL != global_token, "Received EOF where primary expression expected\n");
if(match("&", global_token->s))
{
Address_of = TRUE;
global_token = global_token->next;
require(NULL != global_token, "Received EOF after & where primary expression expected\n");
}
else
{
Address_of = FALSE;
}
if(match("sizeof", global_token->s)) unary_expr_sizeof();
else if('-' == global_token->s[0])
{
if(X86 == Architecture) emit_out("mov_eax, %0\n");
else if(AMD64 == Architecture) emit_out("mov_rax, %0\n");
else if(ARMV7L == Architecture) emit_out("!0 R0 LOADI8_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("SET_X0_TO_0\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 MV\n");
common_recursion(primary_expr);
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("NEG R0 R0\n");
else if(X86 == Architecture) emit_out("sub_ebx,eax\nmov_eax,ebx\n");
else if(AMD64 == Architecture) emit_out("sub_rbx,rax\nmov_rax,rbx\n");
else if(ARMV7L == Architecture) emit_out("'0' R0 R0 SUB R1 ARITH2_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("SUB_X0_X1_X0\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 RS1_A1 RS2_A0 SUB\n");
}
else if('!' == global_token->s[0])
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("LOADI R0 1\n");
else if(X86 == Architecture) emit_out("mov_eax, %1\n");
else if(AMD64 == Architecture) emit_out("mov_rax, %1\n");
else if(ARMV7L == Architecture) emit_out("!1 R0 LOADI8_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("SET_X0_TO_1\n");
common_recursion(postfix_expr);
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("CMPU R0 R1 R0\nSET.G R0 R0 1\n");
else if(X86 == Architecture) emit_out("cmp\nseta_al\nmovzx_eax,al\n");
else if(AMD64 == Architecture) emit_out("cmp_rbx,rax\nseta_al\nmovzx_rax,al\n");
else if(ARMV7L == Architecture) emit_out("'0' R0 CMP R1 AUX_ALWAYS\n!0 R0 LOADI8_ALWAYS\n!1 R0 LOADI8_HI\n");
else if(AARCH64 == Architecture) emit_out("CMP_X1_X0\nSET_X0_TO_1\nSKIP_INST_HI\nSET_X0_TO_0\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 RS1_A0 !1 SLTIU\n");
}
else if('~' == global_token->s[0])
{
common_recursion(postfix_expr);
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("NOT R0 R0\n");
else if(X86 == Architecture) emit_out("not_eax\n");
else if(AMD64 == Architecture) emit_out("not_rax\n");
else if(ARMV7L == Architecture) emit_out("'0' R0 R0 MVN_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("MVN_X0\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RD_A0 RS1_A0 NOT\n");
}
else if(global_token->s[0] == '(')
{
global_token = global_token->next;
expression();
require_match("Error in Primary expression\nDidn't get )\n", ")");
}
else if(global_token->s[0] == '\'') primary_expr_char();
else if(global_token->s[0] == '"') primary_expr_string();
else if(in_set(global_token->s[0], "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_")) primary_expr_variable();
else if(global_token->s[0] == '*') primary_expr_variable();
else if(in_set(global_token->s[0], "0123456789")) primary_expr_number();
else primary_expr_failure();
}
char* compound_operation(char* operator, int is_signed)
{
char* operation = "";
if(match("+=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "ADD R0 R1 R0\n";
else operation = "ADDU R0 R1 R0\n";
}
else if(X86 == Architecture) operation = "add_eax,ebx\n";
else if(AMD64 == Architecture) operation = "add_rax,rbx\n";
else if(ARMV7L == Architecture) operation = "'0' R0 R0 ADD R1 ARITH2_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "ADD_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 ADD\n";
}
else if(match("-=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "SUB R0 R1 R0\n";
else operation = "SUBU R0 R1 R0\n";
}
else if(X86 == Architecture) operation = "sub_ebx,eax\nmov_eax,ebx\n";
else if(AMD64 == Architecture) operation = "sub_rbx,rax\nmov_rax,rbx\n";
else if(ARMV7L == Architecture) operation = "'0' R0 R0 SUB R1 ARITH2_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "SUB_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 SUB\n";
}
else if(match("*=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "MUL R0 R1 R0\n";
else operation = "MULU R0 R1 R0\n";
}
else if(X86 == Architecture)
{
if(is_signed) operation = "imul_ebx\n";
else operation = "mul_ebx\n";
}
else if(AMD64 == Architecture)
{
if(is_signed) operation = "imul_rbx\n";
else operation = "mul_rbx\n";
}
else if(ARMV7L == Architecture) operation = "'9' R0 '0' R1 MULS R0 ARITH2_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "MUL_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 MUL\n";
}
else if(match("/=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "DIV R0 R1 R0\n";
else operation = "DIVU R0 R1 R0\n";
}
else if(X86 == Architecture)
{
if (is_signed) operation = "xchg_ebx,eax\ncdq\nidiv_ebx\n";
else operation = "xchg_ebx,eax\nmov_edx, %0\ndiv_ebx\n";
}
else if(AMD64 == Architecture)
{
if(is_signed) operation = "xchg_rbx,rax\ncqo\nidiv_rbx\n";
else operation = "xchg_rbx,rax\nmov_rdx, %0\ndiv_rbx\n";
}
else if(ARMV7L == Architecture)
{
if(is_signed) operation = "{LR} PUSH_ALWAYS\n^~divides CALL_ALWAYS\n{LR} POP_ALWAYS\n";
else operation = "{LR} PUSH_ALWAYS\n^~divide CALL_ALWAYS\n{LR} POP_ALWAYS\n";
}
else if(AARCH64 == Architecture)
{
if(is_signed) operation = "SDIV_X0_X1_X0\n";
else operation = "UDIV_X0_X1_X0\n";
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
if(is_signed) operation = "RD_A0 RS1_A1 RS2_A0 DIV\n";
else operation = "RD_A0 RS1_A1 RS2_A0 DIVU\n";
}
}
else if(match("%=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "MOD R0 R1 R0\n";
else operation = "MODU R0 R1 R0\n";
}
else if(X86 == Architecture)
{
if(is_signed) operation = "xchg_ebx,eax\ncdq\nidiv_ebx\nmov_eax,edx\n";
else operation = "xchg_ebx,eax\nmov_edx, %0\ndiv_ebx\nmov_eax,edx\n";
}
else if(AMD64 == Architecture)
{
if(is_signed) operation = "xchg_rbx,rax\ncqo\nidiv_rbx\nmov_rax,rdx\n";
else operation = "xchg_rbx,rax\nmov_rdx, %0\ndiv_rbx\nmov_rax,rdx\n";
}
else if(ARMV7L == Architecture)
{
if(is_signed) operation = "{LR} PUSH_ALWAYS\n^~moduluss CALL_ALWAYS\n{LR} POP_ALWAYS\n";
else operation = "{LR} PUSH_ALWAYS\n^~modulus CALL_ALWAYS\n{LR} POP_ALWAYS\n";
}
else if(AARCH64 == Architecture)
{
if(is_signed) operation = "SDIV_X2_X1_X0\nMSUB_X0_X0_X2_X1\n";
else operation = "UDIV_X2_X1_X0\nMSUB_X0_X0_X2_X1\n";
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
if(is_signed) operation = "RD_A0 RS1_A1 RS2_A0 REM\n";
else operation = "RD_A0 RS1_A1 RS2_A0 REMU\n";
}
}
else if(match("<<=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "SAL R0 R1 R0\n";
else operation = "SL0 R0 R1 R0\n";
}
else if(X86 == Architecture)
{
if(is_signed) operation = "mov_ecx,eax\nmov_eax,ebx\nsal_eax,cl\n";
else operation = "mov_ecx,eax\nmov_eax,ebx\nshl_eax,cl\n";
}
else if(AMD64 == Architecture)
{
if(is_signed) operation = "mov_rcx,rax\nmov_rax,rbx\nsal_rax,cl\n";
else operation = "mov_rcx,rax\nmov_rax,rbx\nshl_rax,cl\n";
}
else if(ARMV7L == Architecture) operation = "LEFT R1 R0 R0 SHIFT AUX_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "LSHIFT_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 SLL\n";
}
else if(match(">>=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture))
{
if(is_signed) operation = "SAR R0 R1 R0\n";
else operation = "SR0 R0 R1 R0\n";
}
else if(X86 == Architecture)
{
if(is_signed) operation = "mov_ecx,eax\nmov_eax,ebx\nsar_eax,cl\n";
else operation = "mov_ecx,eax\nmov_eax,ebx\nshr_eax,cl\n";
}
else if(AMD64 == Architecture)
{
if(is_signed) operation = "mov_rcx,rax\nmov_rax,rbx\nsar_rax,cl\n";
else operation = "mov_rcx,rax\nmov_rax,rbx\nshr_rax,cl\n";
}
else if(ARMV7L == Architecture)
{
if(is_signed) operation = "ARITH_RIGHT R1 R0 R0 SHIFT AUX_ALWAYS\n";
else operation = "RIGHT R1 R0 R0 SHIFT AUX_ALWAYS\n";
}
else if(AARCH64 == Architecture)
{
if(is_signed) operation = "ARITH_RSHIFT_X0_X1_X0\n";
else operation = "LOGICAL_RSHIFT_X0_X1_X0\n";
}
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
if(is_signed) operation = "RD_A0 RS1_A1 RS2_A0 SRA\n";
else operation = "RD_A0 RS1_A1 RS2_A0 SRL\n";
}
}
else if(match("&=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) operation = "AND R0 R0 R1\n";
else if(X86 == Architecture) operation = "and_eax,ebx\n";
else if(AMD64 == Architecture) operation = "and_rax,rbx\n";
else if(ARMV7L == Architecture) operation = "NO_SHIFT R0 R0 AND R1 ARITH2_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "AND_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 AND\n";
}
else if(match("^=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) operation = "XOR R0 R0 R1\n";
else if(X86 == Architecture) operation = "xor_eax,ebx\n";
else if(AMD64 == Architecture) operation = "xor_rax,rbx\n";
else if(ARMV7L == Architecture) operation = "'0' R0 R0 XOR R1 ARITH2_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "XOR_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 XOR\n";
}
else if(match("|=", operator))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) operation = "OR R0 R0 R1\n";
else if(X86 == Architecture) operation = "or_eax,ebx\n";
else if(AMD64 == Architecture) operation = "or_rax,rbx\n";
else if(ARMV7L == Architecture) operation = "NO_SHIFT R0 R0 OR R1 AUX_ALWAYS\n";
else if(AARCH64 == Architecture) operation = "OR_X0_X1_X0\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) operation = "RD_A0 RS1_A1 RS2_A0 OR\n";
}
else
{
fputs("Found illegal compound assignment operator: ", stderr);
fputs(operator, stderr);
fputc('\n', stderr);
exit(EXIT_FAILURE);
}
return operation;
}
void expression()
{
bitwise_expr();
if(match("=", global_token->s))
{
char* store = "";
if(match("]", global_token->prev->s))
{
store = store_value(current_target->type->size);
}
else
{
store = store_value(current_target->size);
}
common_recursion(expression);
emit_out(store);
current_target = integer;
}
else if(is_compound_assignment(global_token->s))
{
maybe_bootstrap_error("compound operator");
char* push = "";
char* load = "";
char* operation = "";
char* pop = "";
char* store = "";
struct type* last_type = current_target;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) push = "PUSHR R1 R15\n";
else if(X86 == Architecture) push = "push_ebx\n";
else if(AMD64 == Architecture) push = "push_rbx\n";
else if(ARMV7L == Architecture) push = "{R1} PUSH_ALWAYS\n";
else if(AARCH64 == Architecture) push = "PUSH_X1\n";
else if(RISCV32 == Architecture) push = "RS1_SP RS2_A1 @-4 SW\n";
else if(RISCV64 == Architecture) push = "RS1_SP RS2_A1 @-8 SD\n";
if(!match("]", global_token->prev->s) || !match("char*", current_target->name))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) load = "LOAD R1 R1 0\n";
else if(X86 == Architecture) load = "mov_ebx,[ebx]\n";
else if(AMD64 == Architecture) load = "mov_rbx,[rbx]\n";
else if(ARMV7L == Architecture) load = "!0 R1 LOAD32 R1 MEMORY\n";
else if(AARCH64 == Architecture) load = "DEREF_X1\n";
else if(RISCV32 == Architecture) load = "RD_A1 RS1_A1 LW\n";
else if(RISCV64 == Architecture) load = "RD_A1 RS1_A1 LD\n";
}
else
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) load = "LOAD8 R1 R1 0\n";
else if(X86 == Architecture) load = "movsx_ebx,BYTE_PTR_[ebx]\n";
else if(AMD64 == Architecture) load = "movsx_rbx,BYTE_PTR_[rbx]\n";
else if(ARMV7L == Architecture) load = "LOADU8 R1 LOAD R1 MEMORY\n";
else if(AARCH64 == Architecture) load = "DEREF_X1_BYTE\n";
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) load = "RD_A1 RS1_A1 LBU\n";
}
char *operator = global_token->s;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) pop = "POPR R1 R15\n";
else if(X86 == Architecture) pop = "pop_ebx\n";
else if(AMD64 == Architecture) pop = "pop_rbx\n";
else if(ARMV7L == Architecture) pop = "{R1} POP_ALWAYS\n";
else if(AARCH64 == Architecture) pop = "POP_X1\n";
else if(RISCV32 == Architecture) pop = "RD_A1 RS1_SP !-4 LW\n";
else if(RISCV64 == Architecture) pop = "RD_A1 RS1_SP !-8 LD\n";
if(match("]", global_token->prev->s))
{
store = store_value(current_target->type->size);
}
else
{
store = store_value(current_target->size);
}
common_recursion(expression);
current_target = promote_type(current_target, last_type);
emit_out(push);
emit_out(load);
operation = compound_operation(operator, current_target->is_signed);
emit_out(operation);
emit_out(pop);
emit_out(store);
current_target = integer;
}
}
int iskeywordp(char* s)
{
if(match("auto", s)) return TRUE;
if(match("break", s)) return TRUE;
if(match("case", s)) return TRUE;
if(match("char", s)) return TRUE;
if(match("const", s)) return TRUE;
if(match("continue", s)) return TRUE;
if(match("default", s)) return TRUE;
if(match("do", s)) return TRUE;
if(match("double", s)) return TRUE;
if(match("else", s)) return TRUE;
if(match("enum", s)) return TRUE;
if(match("extern", s)) return TRUE;
if(match("float", s)) return TRUE;
if(match("for", s)) return TRUE;
if(match("goto", s)) return TRUE;
if(match("if", s)) return TRUE;
if(match("int", s)) return TRUE;
if(match("long", s)) return TRUE;
if(match("register", s)) return TRUE;
if(match("return", s)) return TRUE;
if(match("short", s)) return TRUE;
if(match("signed", s)) return TRUE;
if(match("sizeof", s)) return TRUE;
if(match("static", s)) return TRUE;
if(match("struct", s)) return TRUE;
if(match("switch", s)) return TRUE;
if(match("typedef", s)) return TRUE;
if(match("union", s)) return TRUE;
if(match("unsigned", s)) return TRUE;
if(match("void", s)) return TRUE;
if(match("volatile", s)) return TRUE;
if(match("while", s)) return TRUE;
return FALSE;
}
/* Similar to integer division a / b but rounds up */
unsigned ceil_div(unsigned a, unsigned b)
{
return (a + b - 1) / b;
}
/* Process local variable */
void collect_local()
{
if(NULL != break_target_func)
{
fputs("Local variable initialized inside of loop in file: ", stderr);
line_error();
fputs("\nMove the variable outside of the loop to resolve\n", stderr);
fputs("Otherwise the binary will segfault while running\n", stderr);
exit(EXIT_FAILURE);
}
struct type* type_size = type_name();
require(NULL != global_token, "Received EOF while collecting locals\n");
require(!in_set(global_token->s[0], "[{(<=>)}]|&!^%;:'\""), "forbidden character in local variable name\n");
require(!iskeywordp(global_token->s), "You are not allowed to use a keyword as a local variable name\n");
require(NULL != type_size, "Must have non-null type\n");
struct token_list* a = sym_declare(global_token->s, type_size, function->locals);
if(match("main", function->s) && (NULL == function->locals))
{
if(KNIGHT_NATIVE == Architecture) a->depth = register_size;
else if(KNIGHT_POSIX == Architecture) a->depth = 20;
else if(X86 == Architecture) a->depth = -20;
else if(AMD64 == Architecture) a->depth = -40;
else if(ARMV7L == Architecture) a->depth = 16;
else if(AARCH64 == Architecture) a->depth = 32; /* argc, argv, envp and the local (8 bytes each) */
else if(RISCV32 == Architecture) a->depth = -16;
else if(RISCV64 == Architecture) a->depth = -32;
}
else if((NULL == function->arguments) && (NULL == function->locals))
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) a->depth = register_size;
else if(X86 == Architecture) a->depth = -8;
else if(AMD64 == Architecture) a->depth = -16;
else if(ARMV7L == Architecture) a->depth = 8;
else if(AARCH64 == Architecture) a->depth = register_size;
else if(RISCV32 == Architecture) a->depth = -4;
else if(RISCV64 == Architecture) a->depth = -8;
}
else if(NULL == function->locals)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) a->depth = function->arguments->depth + 8;
else if(X86 == Architecture) a->depth = function->arguments->depth - 8;
else if(AMD64 == Architecture) a->depth = function->arguments->depth - 16;
else if(ARMV7L == Architecture) a->depth = function->arguments->depth + 8;
else if(AARCH64 == Architecture) a->depth = function->arguments->depth + register_size;
else if(RISCV32 == Architecture) a->depth = function->arguments->depth - 4;
else if(RISCV64 == Architecture) a->depth = function->arguments->depth - 8;
}
else
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) a->depth = function->locals->depth + register_size;
else if(X86 == Architecture) a->depth = function->locals->depth - register_size;
else if(AMD64 == Architecture) a->depth = function->locals->depth - register_size;
else if(ARMV7L == Architecture) a->depth = function->locals->depth + register_size;
else if(AARCH64 == Architecture) a->depth = function->locals->depth + register_size;
else if(RISCV32 == Architecture) a->depth = function->locals->depth - register_size;
else if(RISCV64 == Architecture) a->depth = function->locals->depth - register_size;
}
/* Adjust the depth of local structs. When stack grows downwards, we want them to
start at the bottom of allocated space. */
unsigned struct_depth_adjustment = (ceil_div(a->type->size, register_size) - 1) * register_size;
if(KNIGHT_POSIX == Architecture) a->depth = a->depth + struct_depth_adjustment;
else if(KNIGHT_NATIVE == Architecture) a->depth = a->depth + struct_depth_adjustment;
else if(X86 == Architecture) a->depth = a->depth - struct_depth_adjustment;
else if(AMD64 == Architecture) a->depth = a->depth - struct_depth_adjustment;
else if(ARMV7L == Architecture) a->depth = a->depth + struct_depth_adjustment;
else if(AARCH64 == Architecture) a->depth = a->depth + struct_depth_adjustment;
else if(RISCV32 == Architecture) a->depth = a->depth - struct_depth_adjustment;
else if(RISCV64 == Architecture) a->depth = a->depth - struct_depth_adjustment;
function->locals = a;
emit_out("# Defining local ");
emit_out(global_token->s);
emit_out("\n");
global_token = global_token->next;
require(NULL != global_token, "incomplete local missing name\n");
if(match("=", global_token->s))
{
global_token = global_token->next;
require(NULL != global_token, "incomplete local assignment\n");
expression();
}
require_match("ERROR in collect_local\nMissing ;\n", ";");
unsigned i = (a->type->size + register_size - 1) / register_size;
while(i != 0)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("PUSHR R0 R15\t#");
else if(X86 == Architecture) emit_out("push_eax\t#");
else if(AMD64 == Architecture) emit_out("push_rax\t#");
else if(ARMV7L == Architecture) emit_out("{R0} PUSH_ALWAYS\t#");
else if(AARCH64 == Architecture) emit_out("PUSH_X0\t#");
else if(RISCV32 == Architecture) emit_out("RD_SP RS1_SP !-4 ADDI\nRS1_SP RS2_A0 SW\t#");
else if(RISCV64 == Architecture) emit_out("RD_SP RS1_SP !-8 ADDI\nRS1_SP RS2_A0 SD\t#");
emit_out(a->s);
emit_out("\n");
i = i - 1;
}
}
void statement();
/* Evaluate if statements */
void process_if()
{
char* number_string = int2str(current_count, 10, TRUE);
current_count = current_count + 1;
emit_out("# IF_");
uniqueID_out(function->s, number_string);
global_token = global_token->next;
require_match("ERROR in process_if\nMISSING (\n", "(");
expression();
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP.Z R0 @ELSE_");
else if(X86 == Architecture) emit_out("test_eax,eax\nje %ELSE_");
else if(AMD64 == Architecture) emit_out("test_rax,rax\nje %ELSE_");
else if(ARMV7L == Architecture) emit_out("!0 CMPI8 R0 IMM_ALWAYS\n^~ELSE_");
else if(AARCH64 == Architecture) emit_out("CBNZ_X0_PAST_BR\nLOAD_W16_AHEAD\nSKIP_32_DATA\n&ELSE_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RS1_A0 @8 BNEZ\n$ELSE_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_EQUAL\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
require_match("ERROR in process_if\nMISSING )\n", ")");
statement();
require(NULL != global_token, "Reached EOF inside of function\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @_END_IF_");
else if(X86 == Architecture) emit_out("jmp %_END_IF_");
else if(AMD64 == Architecture) emit_out("jmp %_END_IF_");
else if(ARMV7L == Architecture) emit_out("^~_END_IF_");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&_END_IF_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$_END_IF_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
emit_out(":ELSE_");
uniqueID_out(function->s, number_string);
if(match("else", global_token->s))
{
global_token = global_token->next;
require(NULL != global_token, "Received EOF where an else statement expected\n");
statement();
require(NULL != global_token, "Reached EOF inside of function\n");
}
emit_out(":_END_IF_");
uniqueID_out(function->s, number_string);
}
void process_for()
{
struct token_list* nested_locals = break_frame;
char* nested_break_head = break_target_head;
char* nested_break_func = break_target_func;
char* nested_break_num = break_target_num;
char* nested_continue_head = continue_target_head;
char* number_string = int2str(current_count, 10, TRUE);
current_count = current_count + 1;
break_target_head = "FOR_END_";
continue_target_head = "FOR_ITER_";
break_target_num = number_string;
break_frame = function->locals;
break_target_func = function->s;
emit_out("# FOR_initialization_");
uniqueID_out(function->s, number_string);
global_token = global_token->next;
require_match("ERROR in process_for\nMISSING (\n", "(");
if(!match(";",global_token->s))
{
expression();
}
emit_out(":FOR_");
uniqueID_out(function->s, number_string);
require_match("ERROR in process_for\nMISSING ;1\n", ";");
expression();
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP.Z R0 @FOR_END_");
else if(X86 == Architecture) emit_out("test_eax,eax\nje %FOR_END_");
else if(AMD64 == Architecture) emit_out("test_rax,rax\nje %FOR_END_");
else if(ARMV7L == Architecture) emit_out("!0 CMPI8 R0 IMM_ALWAYS\n^~FOR_END_");
else if(AARCH64 == Architecture) emit_out("CBNZ_X0_PAST_BR\nLOAD_W16_AHEAD\nSKIP_32_DATA\n&FOR_END_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RS1_A0 @8 BNEZ\n$FOR_END_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_EQUAL\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @FOR_THEN_");
else if(X86 == Architecture) emit_out("jmp %FOR_THEN_");
else if(AMD64 == Architecture) emit_out("jmp %FOR_THEN_");
else if(ARMV7L == Architecture) emit_out("^~FOR_THEN_");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&FOR_THEN_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$FOR_THEN_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
emit_out(":FOR_ITER_");
uniqueID_out(function->s, number_string);
require_match("ERROR in process_for\nMISSING ;2\n", ";");
expression();
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @FOR_");
else if(X86 == Architecture) emit_out("jmp %FOR_");
else if(AMD64 == Architecture) emit_out("jmp %FOR_");
else if(ARMV7L == Architecture) emit_out("^~FOR_");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&FOR_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$FOR_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
emit_out(":FOR_THEN_");
uniqueID_out(function->s, number_string);
require_match("ERROR in process_for\nMISSING )\n", ")");
statement();
require(NULL != global_token, "Reached EOF inside of function\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @FOR_ITER_");
else if(X86 == Architecture) emit_out("jmp %FOR_ITER_");
else if(AMD64 == Architecture) emit_out("jmp %FOR_ITER_");
else if(ARMV7L == Architecture) emit_out("^~FOR_ITER_");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&FOR_ITER_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$FOR_ITER_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
emit_out(":FOR_END_");
uniqueID_out(function->s, number_string);
break_target_head = nested_break_head;
break_target_func = nested_break_func;
break_target_num = nested_break_num;
continue_target_head = nested_continue_head;
break_frame = nested_locals;
}
/* Process Assembly statements */
void process_asm()
{
global_token = global_token->next;
require_match("ERROR in process_asm\nMISSING (\n", "(");
while('"' == global_token->s[0])
{
emit_out((global_token->s + 1));
emit_out("\n");
global_token = global_token->next;
require(NULL != global_token, "Received EOF inside asm statement\n");
}
require_match("ERROR in process_asm\nMISSING )\n", ")");
require_match("ERROR in process_asm\nMISSING ;\n", ";");
}
/* Process do while loops */
void process_do()
{
struct token_list* nested_locals = break_frame;
char* nested_break_head = break_target_head;
char* nested_break_func = break_target_func;
char* nested_break_num = break_target_num;
char* nested_continue_head = continue_target_head;
char* number_string = int2str(current_count, 10, TRUE);
current_count = current_count + 1;
break_target_head = "DO_END_";
continue_target_head = "DO_TEST_";
break_target_num = number_string;
break_frame = function->locals;
break_target_func = function->s;
emit_out(":DO_");
uniqueID_out(function->s, number_string);
global_token = global_token->next;
require(NULL != global_token, "Received EOF where do statement is expected\n");
statement();
require(NULL != global_token, "Reached EOF inside of function\n");
emit_out(":DO_TEST_");
uniqueID_out(function->s, number_string);
require_match("ERROR in process_do\nMISSING while\n", "while");
require_match("ERROR in process_do\nMISSING (\n", "(");
expression();
require_match("ERROR in process_do\nMISSING )\n", ")");
require_match("ERROR in process_do\nMISSING ;\n", ";");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP.NZ R0 @DO_");
else if(X86 == Architecture) emit_out("test_eax,eax\njne %DO_");
else if(AMD64 == Architecture) emit_out("test_rax,rax\njne %DO_");
else if(ARMV7L == Architecture) emit_out("!0 CMPI8 R0 IMM_ALWAYS\n^~DO_");
else if(AARCH64 == Architecture) emit_out("CBZ_X0_PAST_BR\nLOAD_W16_AHEAD\nSKIP_32_DATA\n&DO_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RS1_A0 @DO_END_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_NE\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture))
{
emit_out("BEQZ\n$DO_");
uniqueID_out(function->s, number_string);
emit_out("JAL\n");
}
emit_out(":DO_END_");
uniqueID_out(function->s, number_string);
break_frame = nested_locals;
break_target_head = nested_break_head;
break_target_func = nested_break_func;
break_target_num = nested_break_num;
continue_target_head = nested_continue_head;
}
/* Process while loops */
void process_while()
{
struct token_list* nested_locals = break_frame;
char* nested_break_head = break_target_head;
char* nested_break_func = break_target_func;
char* nested_break_num = break_target_num;
char* nested_continue_head = continue_target_head;
char* number_string = int2str(current_count, 10, TRUE);
current_count = current_count + 1;
break_target_head = "END_WHILE_";
continue_target_head = "WHILE_";
break_target_num = number_string;
break_frame = function->locals;
break_target_func = function->s;
emit_out(":WHILE_");
uniqueID_out(function->s, number_string);
global_token = global_token->next;
require_match("ERROR in process_while\nMISSING (\n", "(");
expression();
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP.Z R0 @END_WHILE_");
else if(X86 == Architecture) emit_out("test_eax,eax\nje %END_WHILE_");
else if(AMD64 == Architecture) emit_out("test_rax,rax\nje %END_WHILE_");
else if(ARMV7L == Architecture) emit_out("!0 CMPI8 R0 IMM_ALWAYS\n^~END_WHILE_");
else if(AARCH64 == Architecture) emit_out("CBNZ_X0_PAST_BR\nLOAD_W16_AHEAD\nSKIP_32_DATA\n&END_WHILE_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RS1_A0 @8 BNEZ\n$END_WHILE_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_EQUAL\t");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
emit_out("# THEN_while_");
uniqueID_out(function->s, number_string);
require_match("ERROR in process_while\nMISSING )\n", ")");
statement();
require(NULL != global_token, "Reached EOF inside of function\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @WHILE_");
else if(X86 == Architecture) emit_out("jmp %WHILE_");
else if(AMD64 == Architecture) emit_out("jmp %WHILE_");
else if(ARMV7L == Architecture) emit_out("^~WHILE_");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&WHILE_");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$WHILE_");
uniqueID_out(function->s, number_string);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS\n");
else if(AARCH64 == Architecture) emit_out("\nBR_X16\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("JAL\n");
emit_out(":END_WHILE_");
uniqueID_out(function->s, number_string);
break_target_head = nested_break_head;
break_target_func = nested_break_func;
break_target_num = nested_break_num;
continue_target_head = nested_continue_head;
break_frame = nested_locals;
}
/* Ensure that functions return */
void return_result()
{
global_token = global_token->next;
require(NULL != global_token, "Incomplete return statement received\n");
if(global_token->s[0] != ';') expression();
require_match("ERROR in return_result\nMISSING ;\n", ";");
struct token_list* i;
unsigned size_local_var;
for(i = function->locals; NULL != i; i = i->next)
{
size_local_var = ceil_div(i->type->size, register_size);
while(size_local_var != 0)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# _return_result_locals\n");
else if(X86 == Architecture) emit_out("pop_ebx\t# _return_result_locals\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# _return_result_locals\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# _return_result_locals\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# _return_result_locals\n");
else if(RISCV32 == Architecture) emit_out("RD_A1 RS1_SP LW # _return_result_locals\nRD_SP RS1_SP !4 ADDI\n");
else if(RISCV64 == Architecture) emit_out("RD_A1 RS1_SP LD # _return_result_locals\nRD_SP RS1_SP !8 ADDI\n");
size_local_var = size_local_var - 1;
}
}
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("RET R15\n");
else if(X86 == Architecture) emit_out("ret\n");
else if(AMD64 == Architecture) emit_out("ret\n");
else if(ARMV7L == Architecture) emit_out("'1' LR RETURN\n");
else if(AARCH64 == Architecture) emit_out("RETURN\n");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("RETURN\n");
}
void process_break()
{
if(NULL == break_target_head)
{
line_error();
fputs("Not inside of a loop or case statement\n", stderr);
exit(EXIT_FAILURE);
}
struct token_list* i = function->locals;
while(i != break_frame)
{
if(NULL == i) break;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# break_cleanup_locals\n");
else if(X86 == Architecture) emit_out("pop_ebx\t# break_cleanup_locals\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# break_cleanup_locals\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# break_cleanup_locals\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# break_cleanup_locals\n");
else if(RISCV32 == Architecture) emit_out("RD_A1 RS1_SP LW\t# break_cleanup_locals\nRD_SP RS1_SP !4 ADDI\n");
else if(RISCV64 == Architecture) emit_out("RD_A1 RS1_SP LD\t# break_cleanup_locals\nRD_SP RS1_SP !8 ADDI\n");
i = i->next;
}
global_token = global_token->next;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @");
else if(X86 == Architecture) emit_out("jmp %");
else if(AMD64 == Architecture) emit_out("jmp %");
else if(ARMV7L == Architecture) emit_out("^~");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$");
emit_out(break_target_head);
emit_out(break_target_func);
emit_out("_");
emit_out(break_target_num);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS");
else if(AARCH64 == Architecture) emit_out("\nBR_X16");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" JAL");
emit_out("\n");
require_match("ERROR in break statement\nMissing ;\n", ";");
}
void process_continue()
{
if(NULL == continue_target_head)
{
line_error();
fputs("Not inside of a loop\n", stderr);
exit(EXIT_FAILURE);
}
global_token = global_token->next;
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @");
else if(X86 == Architecture) emit_out("jmp %");
else if(AMD64 == Architecture) emit_out("jmp %");
else if(ARMV7L == Architecture) emit_out("^~");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$");
emit_out(continue_target_head);
emit_out(break_target_func);
emit_out("_");
emit_out(break_target_num);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS");
else if(AARCH64 == Architecture) emit_out("\nBR_X16");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" JAL");
emit_out("\n");
require_match("ERROR in continue statement\nMissing ;\n", ";");
}
void recursive_statement()
{
global_token = global_token->next;
require(NULL != global_token, "Received EOF in recursive statement\n");
struct token_list* frame = function->locals;
while(!match("}", global_token->s))
{
statement();
require(NULL != global_token, "Received EOF in recursive statement prior to }\n");
}
global_token = global_token->next;
/* Clean up any locals added */
if(((X86 == Architecture) && !match("ret\n", output_list->s)) ||
((AMD64 == Architecture) && !match("ret\n", output_list->s)) ||
(((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) && !match("RET R15\n", output_list->s)) ||
((ARMV7L == Architecture) && !match("'1' LR RETURN\n", output_list->s)) ||
((AARCH64 == Architecture) && !match("RETURN\n", output_list->s)) ||
(((RISCV32 == Architecture) || (RISCV64 == Architecture)) && !match("RETURN\n", output_list->s)))
{
struct token_list* i;
for(i = function->locals; frame != i; i = i->next)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("POPR R1 R15\t# _recursive_statement_locals\n");
else if(X86 == Architecture) emit_out( "pop_ebx\t# _recursive_statement_locals\n");
else if(AMD64 == Architecture) emit_out("pop_rbx\t# _recursive_statement_locals\n");
else if(ARMV7L == Architecture) emit_out("{R1} POP_ALWAYS\t# _recursive_statement_locals\n");
else if(AARCH64 == Architecture) emit_out("POP_X1\t# _recursive_statement_locals\n");
else if(RISCV32 == Architecture) emit_out("RD_A1 RS1_SP LW\t# _recursive_statement_locals\nRD_SP RS1_SP !4 ADDI\n");
else if(RISCV64 == Architecture) emit_out("RD_A1 RS1_SP LD\t# _recursive_statement_locals\nRD_SP RS1_SP !8 ADDI\n");
}
}
function->locals = frame;
}
/*
* statement:
* { statement-list-opt }
* type-name identifier ;
* type-name identifier = expression;
* if ( expression ) statement
* if ( expression ) statement else statement
* do statement while ( expression ) ;
* while ( expression ) statement
* for ( expression ; expression ; expression ) statement
* asm ( "assembly" ... "assembly" ) ;
* goto label ;
* label:
* return ;
* break ;
* expr ;
*/
struct type* lookup_type(char* s, struct type* start);
void statement()
{
require(NULL != global_token, "expected a C statement but received EOF\n");
/* Always an integer until told otherwise */
current_target = integer;
if(global_token->s[0] == '{')
{
recursive_statement();
}
else if(':' == global_token->s[0])
{
emit_out(global_token->s);
emit_out("\t#C goto label\n");
global_token = global_token->next;
}
else if((NULL != lookup_type(global_token->s, prim_types)) ||
match("struct", global_token->s))
{
collect_local();
}
else if(match("if", global_token->s))
{
process_if();
}
else if(match("do", global_token->s))
{
process_do();
}
else if(match("while", global_token->s))
{
process_while();
}
else if(match("for", global_token->s))
{
process_for();
}
else if(match("asm", global_token->s))
{
process_asm();
}
else if(match("goto", global_token->s))
{
global_token = global_token->next;
require(NULL != global_token, "naked goto is not supported\n");
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) emit_out("JUMP @");
else if(X86 == Architecture) emit_out("jmp %");
else if(AMD64 == Architecture) emit_out("jmp %");
else if(ARMV7L == Architecture) emit_out("^~");
else if(AARCH64 == Architecture) emit_out("LOAD_W16_AHEAD\nSKIP_32_DATA\n&");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out("$");
emit_out(global_token->s);
if(ARMV7L == Architecture) emit_out(" JUMP_ALWAYS");
else if(AARCH64 == Architecture) emit_out("\nBR_X16");
else if((RISCV32 == Architecture) || (RISCV64 == Architecture)) emit_out(" JAL");
emit_out("\n");
global_token = global_token->next;
require_match("ERROR in statement\nMissing ;\n", ";");
}
else if(match("return", global_token->s))
{
return_result();
}
else if(match("break", global_token->s))
{
process_break();
}
else if(match("continue", global_token->s))
{
process_continue();
}
else
{
expression();
require_match("ERROR in statement\nMISSING ;\n", ";");
}
}
/* Collect function arguments */
void collect_arguments()
{
global_token = global_token->next;
require(NULL != global_token, "Received EOF when attempting to collect arguments\n");
struct type* type_size;
struct token_list* a;
while(!match(")", global_token->s))
{
type_size = type_name();
require(NULL != global_token, "Received EOF when attempting to collect arguments\n");
require(NULL != type_size, "Must have non-null type\n");
if(global_token->s[0] == ')')
{
/* foo(int,char,void) doesn't need anything done */
continue;
}
else if(global_token->s[0] != ',')
{
/* deal with foo(int a, char b) */
require(!in_set(global_token->s[0], "[{(<=>)}]|&!^%;:'\""), "forbidden character in argument variable name\n");
require(!iskeywordp(global_token->s), "You are not allowed to use a keyword as a argument variable name\n");
a = sym_declare(global_token->s, type_size, function->arguments);
if(NULL == function->arguments)
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) a->depth = 0;
else if(X86 == Architecture) a->depth = -4;
else if(AMD64 == Architecture) a->depth = -8;
else if(ARMV7L == Architecture) a->depth = 4;
else if(AARCH64 == Architecture) a->depth = register_size;
else if(RISCV32 == Architecture) a->depth = -4;
else if(RISCV64 == Architecture) a->depth = -8;
}
else
{
if((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) a->depth = function->arguments->depth + register_size;
else if(X86 == Architecture) a->depth = function->arguments->depth - register_size;
else if(AMD64 == Architecture) a->depth = function->arguments->depth - register_size;
else if(ARMV7L == Architecture) a->depth = function->arguments->depth + register_size;
else if(AARCH64 == Architecture) a->depth = function->arguments->depth + register_size;
else if(RISCV32 == Architecture) a->depth = function->arguments->depth - register_size;
else if(RISCV64 == Architecture) a->depth = function->arguments->depth - register_size;
}
global_token = global_token->next;
require(NULL != global_token, "Incomplete argument list\n");
function->arguments = a;
}
/* ignore trailing comma (needed for foo(bar(), 1); expressions*/
if(global_token->s[0] == ',')
{
global_token = global_token->next;
require(NULL != global_token, "naked comma in collect arguments\n");
}
require(NULL != global_token, "Argument list never completed\n");
}
global_token = global_token->next;
}
void declare_function()
{
current_count = 0;
function = sym_declare(global_token->prev->s, NULL, global_function_list);
/* allow previously defined functions to be looked up */
global_function_list = function;
if((KNIGHT_NATIVE == Architecture) && match("main", function->s))
{
require_match("Impossible error ( vanished\n", "(");
require_match("Reality ERROR (USING KNIGHT-NATIVE)\nHardware does not support arguments\nthus neither can main on this architecture\ntry tape_01 and tape_02 instead\n", ")");
}
else collect_arguments();
require(NULL != global_token, "Function definitions either need to be prototypes or full\n");
/* If just a prototype don't waste time */
if(global_token->s[0] == ';') global_token = global_token->next;
else
{
emit_out("# Defining function ");
emit_out(function->s);
emit_out("\n");
emit_out(":FUNCTION_");
emit_out(function->s);
emit_out("\n");
statement();
/* Prevent duplicate RETURNS */
if(((KNIGHT_POSIX == Architecture) || (KNIGHT_NATIVE == Architecture)) && !match("RET R15\n", output_list->s)) emit_out("RET R15\n");
else if((X86 == Architecture) && !match("ret\n", output_list->s)) emit_out("ret\n");
else if((AMD64 == Architecture) && !match("ret\n", output_list->s)) emit_out("ret\n");
else if((ARMV7L == Architecture) && !match("'1' LR RETURN\n", output_list->s)) emit_out("'1' LR RETURN\n");
else if((AARCH64 == Architecture) && !match("RETURN\n", output_list->s)) emit_out("RETURN\n");
else if((RISCV32 == Architecture) && !match("RETURN\n", output_list->s)) emit_out("RETURN\n");
else if((RISCV64 == Architecture) && !match("RETURN\n", output_list->s)) emit_out("RETURN\n");
}
}
void global_constant()
{
global_token = global_token->next;
require(NULL != global_token, "CONSTANT lacks a name\n");
global_constant_list = sym_declare(global_token->s, NULL, global_constant_list);
require(NULL != global_token->next, "CONSTANT lacks a value\n");
if(match("sizeof", global_token->next->s))
{
global_token = global_token->next->next;
require_match("ERROR in CONSTANT with sizeof\nMissing (\n", "(");
struct type* a = type_name();
require_match("ERROR in CONSTANT with sizeof\nMissing )\n", ")");
global_token->prev->s = int2str(a->size, 10, TRUE);
global_constant_list->arguments = global_token->prev;
}
else
{
global_constant_list->arguments = global_token->next;
global_token = global_token->next->next;
}
}
struct type* global_typedef()
{
struct type* type_size;
/* typedef $TYPE $NAME; */
global_token = global_token->next;
type_size = type_name();
require(NULL != global_token, "Received EOF while reading typedef\n");
type_size = mirror_type(type_size, global_token->s);
add_primitive(type_size);
global_token = global_token->next;
require_match("ERROR in typedef statement\nMissing ;\n", ";");
return type_size;
}
void global_static_array(struct type* type_size, struct token_list* name)
{
int size;
maybe_bootstrap_error("global array definitions");
globals_list = emit(":GLOBAL_", globals_list);
globals_list = emit(name->s, globals_list);
globals_list = emit("\n&GLOBAL_STORAGE_", globals_list);
globals_list = emit(name->s, globals_list);
if (AARCH64 == Architecture || AMD64 == Architecture || RISCV64 == Architecture)
{
globals_list = emit(" %0", globals_list);
}
globals_list = emit("\n:GLOBAL_STORAGE_", globals_list);
globals_list = emit(name->s, globals_list);
require(NULL != global_token->next, "Unterminated global\n");
global_token = global_token->next;
/* Make sure not negative */
if(match("-", global_token->s))
{
line_error();
fputs("Negative values are not supported for allocated arrays\n", stderr);
exit(EXIT_FAILURE);
}
/* length */
size = strtoint(global_token->s) * type_size->size;
/* Stop bad states */
if((size < 0) || (size > 0x100000))
{
line_error();
fputs("M2-Planet is very inefficient so you probably don't want to allocate over 1MB into your binary for NULLs\n", stderr);
exit(EXIT_FAILURE);
}
/* Ensure properly closed */
global_token = global_token->next;
require_match("missing close bracket\n", "]");
require_match("missing ;\n", ";");
globals_list = emit("\n'", globals_list);
while (0 != size)
{
globals_list = emit(" 00", globals_list);
size = size - 1;
}
globals_list = emit("'\n", globals_list);
}
void global_assignment()
{
/* Store the global's value*/
globals_list = emit(":GLOBAL_", globals_list);
globals_list = emit(global_token->prev->s, globals_list);
globals_list = emit("\n", globals_list);
global_token = global_token->next;
require(NULL != global_token, "Global locals value in assignment\n");
unsigned padding_zeroes;
if(in_set(global_token->s[0], "0123456789"))
{ /* Assume Int */
globals_list = emit("%", globals_list);
globals_list = emit(global_token->s, globals_list);
/* broken for big endian architectures */
padding_zeroes = (register_size / 4) - 1;
while(padding_zeroes > 0)
{
/* Assume positive Int */
globals_list = emit(" %0", globals_list);
padding_zeroes = padding_zeroes - 1;
}
globals_list = emit("\n", globals_list);
}
else if(('"' == global_token->s[0]))
{ /* Assume a string*/
globals_list = emit("&GLOBAL_", globals_list);
globals_list = emit(global_token->prev->prev->s, globals_list);
globals_list = emit("_contents\n", globals_list);
globals_list = emit(":GLOBAL_", globals_list);
globals_list = emit(global_token->prev->prev->s, globals_list);
globals_list = emit("_contents\n", globals_list);
globals_list = emit(parse_string(global_token->s), globals_list);
}
else
{
line_error();
fputs("Received ", stderr);
fputs(global_token->s, stderr);
fputs(" in program\n", stderr);
exit(EXIT_FAILURE);
}
global_token = global_token->next;
require_match("ERROR in Program\nMissing ;\n", ";");
}
/*
* program:
* declaration
* declaration program
*
* declaration:
* CONSTANT identifer value
* typedef identifer type;
* type-name identifier ;
* type-name identifier = value ;
* type-name identifier [ value ];
* type-name identifier ( parameter-list ) ;
* type-name identifier ( parameter-list ) statement
*
* parameter-list:
* parameter-declaration
* parameter-list, parameter-declaration
*
* parameter-declaration:
* type-name identifier-opt
*/
void program()
{
unsigned i;
function = NULL;
Address_of = FALSE;
struct type* type_size;
new_type:
/* Deal with garbage input */
if (NULL == global_token) return;
require('#' != global_token->s[0], "unhandled macro directive\n");
require(!match("\n", global_token->s), "unexpected newline token\n");
/* Handle cc_* CONSTANT statements */
if(match("CONSTANT", global_token->s))
{
global_constant();
goto new_type;
}
/* Handle c typedef statements */
if(match("typedef", global_token->s))
{
type_size = global_typedef();
goto new_type;
}
type_size = type_name();
/* Deal with case of struct definitions */
if(NULL == type_size) goto new_type;
require(NULL != global_token->next, "Unterminated global\n");
/* Add to global symbol table */
global_symbol_list = sym_declare(global_token->s, type_size, global_symbol_list);
global_token = global_token->next;
/* Deal with global variables */
if(match(";", global_token->s))
{
/* Ensure enough bytes are allocated to store global variable.
In some cases it allocates too much but that is harmless. */
globals_list = emit(":GLOBAL_", globals_list);
globals_list = emit(global_token->prev->s, globals_list);
/* round up division */
i = ceil_div(type_size->size, register_size);
globals_list = emit("\n", globals_list);
while(i != 0)
{
globals_list = emit("NULL\n", globals_list);
i = i - 1;
}
global_token = global_token->next;
goto new_type;
}
/* Deal with global functions */
if(match("(", global_token->s))
{
declare_function();
goto new_type;
}
/* Deal with assignment to a global variable */
if(match("=", global_token->s))
{
global_assignment();
goto new_type;
}
/* Deal with global static arrays */
if(match("[", global_token->s))
{
global_static_array(type_size, global_token->prev);
goto new_type;
}
/* Everything else is just an error */
line_error();
fputs("Received ", stderr);
fputs(global_token->s, stderr);
fputs(" in program\n", stderr);
exit(EXIT_FAILURE);
}
void recursive_output(struct token_list* head, FILE* out)
{
struct token_list* i = reverse_list(head);
while(NULL != i)
{
fputs(i->s, out);
i = i->next;
}
}
void output_tokens(struct token_list *i, FILE* out)
{
while(NULL != i)
{
fputs(i->s, out);
fputs(" ", out);
i = i->next;
}
}
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