thermosphere: sw breakpoint code, etc.

thermosphere/src/software_breakpoints.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define _REENT_ONLY
+#include <errno.h>
+
+#include "spinlock.h"
+
+#define MAX_SW_BREAKPOINTS  32
+
+typedef struct SoftwareBreakpoint {
+    u64 address; // VA
+    u32 savedInstruction;
+    u32 uid;
+    bool persistent;
+    bool applied;
+} SoftwareBreakpoint;
+
+typedef struct SoftwareBreakpointManager {
+    RecursiveSpinlock lock;
+    size_t numBreakpoints;
+    SoftwareBreakpoint breakpoints[MAX_SW_BREAKPOINTS];
+    u32 bpUniqueCounter;
+} SoftwareBreakpointManager;
+
+extern SoftwareBreakpointManager g_softwareBreakpointManager;
+
+bool revertAllSoftwareBreakpoints(void);
+bool applyAllSoftwareBreakpoints(void);
+
+int addSoftwareBreakpoint(u64 addr, bool persistent);
+int removeSoftwareBreakpoint(u64 addr, bool keepPersistent);
+int removeAllSoftwareBreakpoints(bool keepPersistent);