Code provision for n32/n64 mips userland emulation. Not functional yet.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3284 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 29 insertions, 0 deletions

diff --git a/linux-user/mipsn32/target_signal.h b/linux-user/mipsn32/target_signal.h
new file mode 100644
index 0000000000..4adf726e65
--- /dev/null
+++ b/linux-user/mipsn32/target_signal.h
@@ -0,0 +1,29 @@
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+#include "cpu.h"
+
+/* this struct defines a stack used during syscall handling */
+
+typedef struct target_sigaltstack {
+	int32_t ss_sp;
+	uint32_t ss_size;
+	int32_t ss_flags;
+} target_stack_t;
+
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK     1
+#define TARGET_SS_DISABLE     2
+
+#define TARGET_MINSIGSTKSZ    2048
+#define TARGET_SIGSTKSZ       8192
+
+static inline target_ulong get_sp_from_cpustate(CPUMIPSState *state)
+{
+    return state->gpr[29][state->current_tc];
+}
+
+#endif /* TARGET_SIGNAL_H */