From cabbac92126f168124372fc502dbc1fa2313eee3 Mon Sep 17 00:00:00 2001
From: pacien
Date: Tue, 5 Jun 2018 22:11:03 +0200
Subject: gen const decl

---
 src/generator.c | 135 +++++++++++++++++++++++++++++++-------------------------
 src/generator.h |   4 ++
 src/tpc.y       |  20 ++++-----
 3 files changed, 90 insertions(+), 69 deletions(-)

diff --git a/src/generator.c b/src/generator.c
index b8a0b8f..33fade9 100644
--- a/src/generator.c
+++ b/src/generator.c
@@ -10,71 +10,74 @@
 void gen_prologue() {
   fprintf(output, "extern printf\nextern scanf\n");
   fprintf(output, "section .data\n");
+}
+
+void gen_prologue_continue(int *bss_done) {
+  if (*bss_done != 0) return;
+
   fprintf(output, "format_int db \"%%d\",10,0\n");
   fprintf(output, "format_char db \"%%c\",10,0\n");
   fprintf(output, "format_int_in: db \"%%d\", 0\n");
   fprintf(output, "format_char_in: db \"%%c\", 0\n\n");
   fprintf(output, "section .bss\n");
+
+  fprintf(output, "globals: resq %d\n", nb_globals);
+  fprintf(output, "section .text\n\nglobal _start\n");
+  fprintf(output, "\nprinte: ;print needs an argument in rax\n");
+  fprintf(output, "push rbp\n");
+  fprintf(output, "mov rbp, rsp\n");
+  fprintf(output, "push rsi\n");
+  fprintf(output, "push rdi\n");
+  fprintf(output, "mov rsi, rax\n");
+  fprintf(output, "mov rdi, format_int\n");
+  fprintf(output, "mov rax, 0\n");
+  fprintf(output, "call printf WRT ..plt\n");
+  fprintf(output, "pop rdi\n");
+  fprintf(output, "pop rsi\n");
+  fprintf(output, "pop rbp\n");
+  fprintf(output, "ret\n");
+  fprintf(output, "\nprintc: ;print needs an argument in rax\n");
+  fprintf(output, "push rbp\n");
+  fprintf(output, "mov rbp, rsp\n");
+  fprintf(output, "push rsi\n");
+  fprintf(output, "push rdi\n");
+  fprintf(output, "mov rsi, rax\n");
+  fprintf(output, "mov rdi, format_char\n");
+  fprintf(output, "mov rax, 0\n");
+  fprintf(output, "call printf WRT ..plt\n");
+  fprintf(output, "pop rdi\n");
+  fprintf(output, "pop rsi\n");
+  fprintf(output, "pop rbp\n");
+  fprintf(output, "ret\n");
+  fprintf(output, "\nreade: ;read needs an adress in rax\n");
+  fprintf(output, "push rbp\n");
+  fprintf(output, "mov rbp, rsp\n");
+  fprintf(output, "push rsi\n");
+  fprintf(output, "push rdi\n");
+  fprintf(output, "mov rsi, rax\n");
+  fprintf(output, "mov rdi, format_int_in\n");
+  fprintf(output, "mov rax, 0\n");
+  fprintf(output, "call scanf\n");
+  fprintf(output, "pop rdi\n");
+  fprintf(output, "pop rsi\n");
+  fprintf(output, "pop rbp\n");
+  fprintf(output, "ret\n");
+  fprintf(output, "\nreadc: ;read needs an adress in rax\n");
+  fprintf(output, "push rbp\n");
+  fprintf(output, "mov rbp, rsp\n");
+  fprintf(output, "push rsi\n");
+  fprintf(output, "push rdi\n");
+  fprintf(output, "mov rsi, rax\n");
+  fprintf(output, "mov rdi, format_char_in\n");
+  fprintf(output, "mov rax, 0\n");
+  fprintf(output, "call scanf\n");
+  fprintf(output, "pop rdi\n");
+  fprintf(output, "pop rsi\n");
+  fprintf(output, "pop rbp\n");
+  fprintf(output, "ret\n");
+  *bss_done = 1;
 }
-void gen_prologue_continue(int *bss_done) {
-  if (*bss_done == 0) {
-    fprintf(output, "globals: resq %d\n", nb_globals);
-    fprintf(output, "section .text\n\nglobal _start\n");
-    fprintf(output, "\nprinte: ;print needs an argument in rax\n");
-    fprintf(output, "push rbp\n");
-    fprintf(output, "mov rbp, rsp\n");
-    fprintf(output, "push rsi\n");
-    fprintf(output, "push rdi\n");
-    fprintf(output, "mov rsi, rax\n");
-    fprintf(output, "mov rdi, format_int\n");
-    fprintf(output, "mov rax, 0\n");
-    fprintf(output, "call printf WRT ..plt\n");
-    fprintf(output, "pop rdi\n");
-    fprintf(output, "pop rsi\n");
-    fprintf(output, "pop rbp\n");
-    fprintf(output, "ret\n");
-    fprintf(output, "\nprintc: ;print needs an argument in rax\n");
-    fprintf(output, "push rbp\n");
-    fprintf(output, "mov rbp, rsp\n");
-    fprintf(output, "push rsi\n");
-    fprintf(output, "push rdi\n");
-    fprintf(output, "mov rsi, rax\n");
-    fprintf(output, "mov rdi, format_char\n");
-    fprintf(output, "mov rax, 0\n");
-    fprintf(output, "call printf WRT ..plt\n");
-    fprintf(output, "pop rdi\n");
-    fprintf(output, "pop rsi\n");
-    fprintf(output, "pop rbp\n");
-    fprintf(output, "ret\n");
-    fprintf(output, "\nreade: ;read needs an adress in rax\n");
-    fprintf(output, "push rbp\n");
-    fprintf(output, "mov rbp, rsp\n");
-    fprintf(output, "push rsi\n");
-    fprintf(output, "push rdi\n");
-    fprintf(output, "mov rsi, rax\n");
-    fprintf(output, "mov rdi, format_int_in\n");
-    fprintf(output, "mov rax, 0\n");
-    fprintf(output, "call scanf\n");
-    fprintf(output, "pop rdi\n");
-    fprintf(output, "pop rsi\n");
-    fprintf(output, "pop rbp\n");
-    fprintf(output, "ret\n");
-    fprintf(output, "\nreadc: ;read needs an adress in rax\n");
-    fprintf(output, "push rbp\n");
-    fprintf(output, "mov rbp, rsp\n");
-    fprintf(output, "push rsi\n");
-    fprintf(output, "push rdi\n");
-    fprintf(output, "mov rsi, rax\n");
-    fprintf(output, "mov rdi, format_char_in\n");
-    fprintf(output, "mov rax, 0\n");
-    fprintf(output, "call scanf\n");
-    fprintf(output, "pop rdi\n");
-    fprintf(output, "pop rsi\n");
-    fprintf(output, "pop rbp\n");
-    fprintf(output, "ret\n");
-    *bss_done = 1;
-  }
-}
+
 void gen_const_declaration() {
   fprintf(output, "\n_start:\n");
   fprintf(output, "push rbp\nmov rbp, rsp\n\n");
@@ -90,6 +93,20 @@ void gen_const_declaration() {
   fun_display_table();
 }
 
+void gen_const(const char name[], int value, Scope scope) {
+  switch (scope) {
+  case LOCAL:
+    loc_addVar(name, INT); // TODO: make read only
+    fprintf(output, "push %d\n", value);
+    return;
+
+  case GLOBAL:
+    glo_addVar(name, INT); // TODO: make read only
+    fprintf(output, "%s: db QWORD %d\n", name, value);
+    return;
+  }
+}
+
 Type gen_function_declaration(const char name[], int return_type) {
   fprintf(output, "\n%s:\npush rbp\nmov rbp,rsp\n", name);
   return return_type;
diff --git a/src/generator.h b/src/generator.h
index 41a769a..6c132fd 100644
--- a/src/generator.h
+++ b/src/generator.h
@@ -7,6 +7,7 @@
 #define __GENERATOR_H__
 
 #include <stdio.h>
+#include <stdbool.h>
 #include "symbol_table.h"
 
 typedef enum scope {
@@ -21,10 +22,13 @@ FILE *output;
 void gen_prologue();
 void gen_prologue_continue(int *bss_done);
 void gen_const_declaration();
+void gen_const(const char name[], int value, Scope scope);
+
 Type gen_function_declaration(const char name[], int return_type);
 void gen_function_end_declaration(const char name[], int return_type, int nb_param);
 void gen_function_return(Type expect, Type actual);
 Type gen_function_call(const char name[], int nb_param);
+
 void gen_declaration(const char name[], int type, Scope scope);
 void gen_check(const char name[], Scope scope);
 
diff --git a/src/tpc.y b/src/tpc.y
index 9878ce7..b5d0d35 100644
--- a/src/tpc.y
+++ b/src/tpc.y
@@ -54,32 +54,32 @@ static char fname[64];
 %precedence ELSE
 
 %%
-Prog:                              { gen_prologue(); }
-  DeclConsts DeclVars DeclFoncts { gen_const_declaration(); }
+Prog:                               { gen_prologue(); }
+  DeclConsts DeclVars DeclFoncts    { gen_const_declaration(); }
 ;
 DeclConsts:
   DeclConsts CONST ListConst ';'
 |
 ;
 ListConst:
-  ListConst ',' IDENT '=' Litteral
-| IDENT '=' Litteral
+  ListConst ',' IDENT '=' Litteral  { gen_const($<ident>1, $<num>3, scope); }
+| IDENT '=' Litteral                { gen_const($<ident>1, $<num>3, scope); }
 ;
 Litteral:
-  NombreSigne
-| CARACTERE
+  NombreSigne                       { $<num>$ = $<num>1; }
+| CARACTERE                         { $<num>$ = $<num>1; }
 ;
 NombreSigne:
-  NUM
-| ADDSUB NUM
+  NUM                               { $<num>$ = $<num>1; }
+| ADDSUB NUM                        { $<num>$ = $<addsub>1 == '-' ? - $<num>2 : $<num>2; }
 ;
 DeclVars:
   DeclVars TYPE Declarateurs ';'
 |
 ;
 Declarateurs:
-  Declarateurs ',' Declarateur { gen_declaration($<ident>3, $<type>0, scope); }
-| Declarateur                  { gen_declaration($<ident>1, $<type>0, scope); }
+  Declarateurs ',' Declarateur      { gen_declaration($<ident>3, $<type>0, scope); }
+| Declarateur                       { gen_declaration($<ident>1, $<type>0, scope); }
 ;
 Declarateur:
   IDENT
-- 
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