> compile NEMU

ysyx_22040000 李心杨
Linux calcite 6.1.71 #1-NixOS SMP PREEMPT_DYNAMIC Fri Jan  5 14:18:41 UTC 2024 x86_64 GNU/Linux
 16:04:14  up 2 days  4:59,  2 users,  load average: 1.20, 0.76, 0.69

nemu/.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "digital-ide.welcome.show": false
+}

nemu/flake.nix

@@ -52,19 +52,17 @@
 
           configurePhase = ''
             echo NEMU_HOME=$NEMU_HOME
-            make -f scripts/config.mk rv32_defconfig
-          '';
-
-          buildPhase = ''
-            make app
+            echo pwd=$(pwd)
+            mkdir -p $(pwd)/kconfig
+            WORK_DIR=$(pwd) obj=$(pwd)/kconfig make --trace -e -f scripts/config.mk WORK_DIR=$(pwd) obj=$(pwd)/kconfig rv32_defconfig
           '';
 
           installPhase = ''
-            make install
+            BUILD_DIR=$out make install
           '';
 
           checkPhase = ''
-            make test
+            BUILD_DIR=$out make test
           '';
 
           NEMU_HOME = src;

nemu/src/monitor/sdb/sdb.c

@@ -16,6 +16,8 @@
 #include "sdb.h"
 #include "common.h"
 #include "sys/types.h"
+#include <addrexp.h>
+#include <addrexp_lex.h>
 #include <cpu/cpu.h>
 #include <errno.h>
 #include <isa.h>
@@ -23,8 +25,6 @@
 #include <readline/history.h>
 #include <readline/readline.h>
 #include <stdint.h>
-#include <addrexp.h>
-#include <addrexp_lex.h>
 
 static int is_batch_mode = false;
 

nemu/src/monitor/sdb/watchpoint.c

@@ -2,17 +2,18 @@
  * Copyright (c) 2014-2022 Zihao Yu, Nanjing University
  *
  * NEMU is licensed under Mulan PSL v2.
-* You can use this software according to the terms and conditions of the Mulan PSL v2.
-* You may obtain a copy of Mulan PSL v2 at:
+ * You can use this software according to the terms and conditions of the Mulan
+ *PSL v2. You may obtain a copy of Mulan PSL v2 at:
  *          http://license.coscl.org.cn/MulanPSL2
  *
-* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
-* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
-* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY
+ *KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+ *NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
  *
  * See the Mulan PSL v2 for more details.
  ***************************************************************************************/
 
+#include "common.h"
 #include "sdb.h"
 
 #define NR_WP 32
@@ -20,13 +21,13 @@
 typedef struct watchpoint {
   int NO;
   struct watchpoint *next;
-
-  /* TODO: Add more members if necessary */
-
+  word_t val;
+  char *expr;
 } WP;
 
 static WP wp_pool[NR_WP] = {};
-static WP *head = NULL, *free_ = NULL;
+static WP *head = NULL, *tail = NULL, *free_ = NULL;
+static int wp_count = 0;
 
 void init_wp_pool() {
   int i;
@@ -39,5 +40,65 @@ void init_wp_pool() {
   free_ = wp_pool;
 }
 
-/* TODO: Implement the functionality of watchpoint */
+WP *wp_new() {
+  if (free_ == NULL) {
+    Log("wp_pool: Watchpoint pool not initialized or is full.");
+    return NULL;
+  }
   
+  WP *ret = free_;
+  free_ = free_->next;
+
+  ret->NO = 0;
+  ret->next = NULL;
+  return ret;
+}
+
+void wp_delete(WP *wp) {
+  assert(wp);
+  wp->next = free_;
+  free_ = wp;
+}
+
+int wp_add(char * expr) {
+  WP *wp = wp_new();
+  if (wp == NULL) {
+    Log("watchpoint: Failed to add watchpoint, pool is full.");
+    return 1;
+  }
+
+  wp->NO = wp_count++;
+  if (tail == NULL) {
+    head = wp;
+    tail = wp;
+  } else {
+    tail->next = wp;
+    tail = wp;
+  }
+  return 0;
+}
+
+int wp_remove_by_number(int number) {
+  WP *target_prev;
+  // Find previous node of target number
+  for (target_prev = head; target_prev != NULL && target_prev->next->NO != number; target_prev = target_prev->next) ;
+  if (target_prev == NULL) {
+    Log("Watchpoint not found, you can check current watchpoints with `info w`");
+    return 1;
+  }
+  WP *target = target_prev->next;
+  target_prev->next = target->next;
+  if (target == head) {
+    head = target->next;
+  } else if (target == tail) {
+    tail = target_prev;
+  }
+  wp_delete(target);
+  return 0;
+}
+
+// int wp_eval_all(char *) {
+
+// }
+
+/* TODO: Implement the functionality of watchpoint */