user: move common-user includes to a subdirectory of {bsd,linux}-user/

Avoid polluting the compilation of common-user/ with local include files;
making an include file available to common-user/ should be a deliberate
decision in order to keep a clear interface that can be used by both
bsd-user/ and linux-user/.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/linux-user/include/host/alpha/host-signal.h b/linux-user/include/host/alpha/host-signal.h
new file mode 100644
index 0000000000..f4c942948a
--- /dev/null
+++ b/linux-user/include/host/alpha/host-signal.h
@@ -0,0 +1,47 @@
+/*
+ * host-signal.h: signal info dependent on the host architecture
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ * Copyright (c) 2021 Linaro Limited
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef ALPHA_HOST_SIGNAL_H
+#define ALPHA_HOST_SIGNAL_H
+
+static inline uintptr_t host_signal_pc(ucontext_t *uc)
+{
+    return uc->uc_mcontext.sc_pc;
+}
+
+static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
+{
+    uc->uc_mcontext.sc_pc = pc;
+}
+
+static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
+{
+    uint32_t *pc = (uint32_t *)host_signal_pc(uc);
+    uint32_t insn = *pc;
+
+    /* XXX: need kernel patch to get write flag faster */
+    switch (insn >> 26) {
+    case 0x0d: /* stw */
+    case 0x0e: /* stb */
+    case 0x0f: /* stq_u */
+    case 0x24: /* stf */
+    case 0x25: /* stg */
+    case 0x26: /* sts */
+    case 0x27: /* stt */
+    case 0x2c: /* stl */
+    case 0x2d: /* stq */
+    case 0x2e: /* stl_c */
+    case 0x2f: /* stq_c */
+        return true;
+    }
+    return false;
+}
+
+#endif