LoongArch: ptrace: Expose hardware breakpoints to debuggers

Implement the regset-based ptrace interface that exposes hardware breakpoints to user-space debuggers to query and set instruction and data breakpoints. Signed-off-by: Qing Zhang <zhangqing@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-02-25 15:52:57 +08:00
parent edffa33c7b
commit 1a69f7a161
3 changed files with 413 additions and 0 deletions
@@ -46,6 +46,15 @@ struct user_fp_state {
 	uint32_t    fcsr;
 };

+struct user_watch_state {
+	uint16_t dbg_info;
+	struct {
+		uint64_t    addr;
+		uint64_t    mask;
+		uint32_t    ctrl;
+	} dbg_regs[8];
+};
+
 #define PTRACE_SYSEMU			0x1f
 #define PTRACE_SYSEMU_SINGLESTEP	0x20