diff mbox series

[v3,36/57] tcg/loongarch64: Assert the host supports unaligned accesses

Message ID 20230425193146.2106111-37-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg: Improve atomicity support | expand

Commit Message

Richard Henderson April 25, 2023, 7:31 p.m. UTC 
This should be true of all server class loongarch64.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/loongarch64/tcg-target.c.inc | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index e651ec5c71..ccc13ffdb4 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -30,6 +30,7 @@ 
  */
 
 #include "../tcg-ldst.c.inc"
+#include <asm/hwcap.h>
 
 #ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
@@ -1674,6 +1675,11 @@  static void tcg_target_qemu_prologue(TCGContext *s)
 
 static void tcg_target_init(TCGContext *s)
 {
+    unsigned long hwcap = qemu_getauxval(AT_HWCAP);
+
+    /* All server class loongarch have UAL; only embedded do not. */
+    assert(hwcap & HWCAP_LOONGARCH_UAL);
+
     tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;
     tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS;