[13/21] accel/tcg: Un-inline retaddr helpers to 'user-retaddr.h'

Commit Message

Philippe Mathieu-Daudé April 17, 2024, 6:27 p.m. UTC

set_helper_retaddr() is only used in accel/tcg/user-exec.c.

clear_helper_retaddr() is only used in accel/tcg/user-exec.c
and accel/tcg/user-exec.c.

No need to expose their definitions to all user-emulation
files including "exec/cpu_ldst.h", move them to a new
"user-retaddr.h" header (restricted to accel/tcg/).

Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
Message-Id: <[e-mail]>
---
 accel/tcg/user-retaddr.h | 28 ++++++++++++++++++++++++++++
 include/exec/cpu_ldst.h  | 28 ++--------------------------
 accel/tcg/cpu-exec.c     |  3 +++
 accel/tcg/user-exec.c    |  1 +
 4 files changed, 34 insertions(+), 26 deletions(-)
 create mode 100644 accel/tcg/user-retaddr.h

Comments

Richard Henderson April 17, 2024, 7:30 p.m. UTC | #1

On 4/17/24 11:27, Philippe Mathieu-Daudé wrote:
> set_helper_retaddr() is only used in accel/tcg/user-exec.c.
> 
> clear_helper_retaddr() is only used in accel/tcg/user-exec.c
> and accel/tcg/user-exec.c.

Typo here, repeating the same filename.

r~

Philippe Mathieu-Daudé April 18, 2024, 10:45 a.m. UTC | #2

On 17/4/24 21:30, Richard Henderson wrote:
> On 4/17/24 11:27, Philippe Mathieu-Daudé wrote:
>> set_helper_retaddr() is only used in accel/tcg/user-exec.c.
>>
>> clear_helper_retaddr() is only used in accel/tcg/user-exec.c

Here should be "accel/tcg/cpu-exec.c", fixed.

>> and accel/tcg/user-exec.c.
> 
> Typo here, repeating the same filename.
> 
> r~

Patch

diff --git a/accel/tcg/user-retaddr.h b/accel/tcg/user-retaddr.h
new file mode 100644
index 0000000000..e0f57e1994
--- /dev/null
+++ b/accel/tcg/user-retaddr.h
@@ -0,0 +1,28 @@ 
+#ifndef ACCEL_TCG_USER_RETADDR_H
+#define ACCEL_TCG_USER_RETADDR_H
+
+#include "qemu/atomic.h"
+
+extern __thread uintptr_t helper_retaddr;
+
+static inline void set_helper_retaddr(uintptr_t ra)
+{
+    helper_retaddr = ra;
+    /*
+     * Ensure that this write is visible to the SIGSEGV handler that
+     * may be invoked due to a subsequent invalid memory operation.
+     */
+    signal_barrier();
+}
+
+static inline void clear_helper_retaddr(void)
+{
+    /*
+     * Ensure that previous memory operations have succeeded before
+     * removing the data visible to the signal handler.
+     */
+    signal_barrier();
+    helper_retaddr = 0;
+}
+
+#endif
diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h
index eb8f3f0595..82690d3947 100644
--- a/include/exec/cpu_ldst.h
+++ b/include/exec/cpu_ldst.h
@@ -300,31 +300,7 @@  Int128 cpu_atomic_cmpxchgo_be_mmu(CPUArchState *env, abi_ptr addr,
                                   Int128 cmpv, Int128 newv,
                                   MemOpIdx oi, uintptr_t retaddr);
 
-#if defined(CONFIG_USER_ONLY)
-
-extern __thread uintptr_t helper_retaddr;
-
-static inline void set_helper_retaddr(uintptr_t ra)
-{
-    helper_retaddr = ra;
-    /*
-     * Ensure that this write is visible to the SIGSEGV handler that
-     * may be invoked due to a subsequent invalid memory operation.
-     */
-    signal_barrier();
-}
-
-static inline void clear_helper_retaddr(void)
-{
-    /*
-     * Ensure that previous memory operations have succeeded before
-     * removing the data visible to the signal handler.
-     */
-    signal_barrier();
-    helper_retaddr = 0;
-}
-
-#else
+#if !defined(CONFIG_USER_ONLY)
 
 #include "tcg/oversized-guest.h"
 
@@ -376,7 +352,7 @@  static inline CPUTLBEntry *tlb_entry(CPUState *cpu, uintptr_t mmu_idx,
     return &cpu->neg.tlb.f[mmu_idx].table[tlb_index(cpu, mmu_idx, addr)];
 }
 
-#endif /* defined(CONFIG_USER_ONLY) */
+#endif /* !defined(CONFIG_USER_ONLY) */
 
 #if TARGET_BIG_ENDIAN
 # define cpu_lduw_data        cpu_lduw_be_data
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 5c70748060..225e5fbd3e 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -41,6 +41,9 @@ 
 #include "tb-context.h"
 #include "internal-common.h"
 #include "internal-target.h"
+#if defined(CONFIG_USER_ONLY)
+#include "user-retaddr.h"
+#endif
 
 /* -icount align implementation. */
 
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 3cac3a78c4..1c621477ad 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -31,6 +31,7 @@ 
 #include "tcg/tcg-ldst.h"
 #include "internal-common.h"
 #include "internal-target.h"
+#include "user-retaddr.h"
 
 __thread uintptr_t helper_retaddr;