From a9054f0a64b6ae0463eff199ca42b5d62a28acd6 Mon Sep 17 00:00:00 2001
From: Yaossg <yaossg@outlook.com>
Date: Sun, 8 Dec 2024 15:40:44 +0800
Subject: [PATCH] fix prefix and div-assign

---
 boot.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/boot.c b/boot.c
index ac401de..7c8641d 100644
--- a/boot.c
+++ b/boot.c
@@ -427,7 +427,7 @@ void next_token() {
         int ch2 = getchar();
         if (ch2 == '=') {
             token_type = TOKEN_DIV_ASSIGN;
-        } if (ch2 == '/') {
+        } else if (ch2 == '/') {
             do ch = getchar(); while (ch != -1 && ch != '\n');
             next_token();
             return;
@@ -1253,7 +1253,7 @@ int parse_postfix_expr() {
 int parse_prefix_expr() {
     next_token();
     if (token_type == TOKEN_AND) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         int type = reg_type[reg];
         if (type & TYPE_PTR_MASK) {
             fprintf(stderr, "cannot take address of a pointer\n");
@@ -1261,7 +1261,7 @@ int parse_prefix_expr() {
         }
         return addressof(reg);
     } else if (token_type == TOKEN_MUL) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         int type = reg_type[reg];
         if (!(type & TYPE_PTR_MASK)) {
             fprintf(stderr, "cannot dereference a non-pointer\n");
@@ -1273,20 +1273,20 @@ int parse_prefix_expr() {
         }
         return dereference(reg);
     } else if (token_type == TOKEN_SUB) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         return asm_r_arith("neg", reg);
     } else if (token_type == TOKEN_COMPL) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         return asm_r_arith("not", reg);
     } else if (token_type == TOKEN_NOT) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         return asm_r(TYPE_INT, "seqz", reg);
     } else if (token_type == TOKEN_INC) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         _asm_ri("addi", reg, reg, step_of(reg_type[reg]));
         return reg;
     } else if (token_type == TOKEN_DEC) {
-        int reg = parse_postfix_expr();
+        int reg = parse_prefix_expr();
         _asm_ri("addi", reg, reg, -step_of(reg_type[reg]));
         return reg;
     } else {
@@ -1989,8 +1989,6 @@ void dump_string_table() {
                 printf("\\t");
             } else if (ch == '\r') {
                 printf("\\r");
-            } else if (ch == '\0') {
-                printf("\\0");
             } else if (ch == '\\') {
                 printf("\\\\");
             } else if (ch == '\'') {