diff mbox series

[v2,14/41] linux-user/host/mips: Populate host_signal.h

Message ID 20210918184527.408540-15-richard.henderson@linaro.org
State Superseded
Headers show
Series linux-user: Streamline handling of SIGSEGV | expand

Commit Message

Richard Henderson Sept. 18, 2021, 6:45 p.m. UTC 
Split host_signal_pc and host_signal_write out of user-exec.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 linux-user/host/mips/host-signal.h | 62 +++++++++++++++++++++++++++++-
 accel/tcg/user-exec.c              | 52 +------------------------
 2 files changed, 62 insertions(+), 52 deletions(-)

-- 
2.25.1

Comments

Philippe Mathieu-Daudé Sept. 19, 2021, 6:08 p.m. UTC | #1 
On 9/18/21 20:45, Richard Henderson wrote:
> Split host_signal_pc and host_signal_write out of user-exec.c.

> 

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

> ---

>  linux-user/host/mips/host-signal.h | 62 +++++++++++++++++++++++++++++-

>  accel/tcg/user-exec.c              | 52 +------------------------

>  2 files changed, 62 insertions(+), 52 deletions(-)


Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
diff mbox series

Patch

diff --git a/linux-user/host/mips/host-signal.h b/linux-user/host/mips/host-signal.h
index f4b4d65031..9c83e51130 100644
--- a/linux-user/host/mips/host-signal.h
+++ b/linux-user/host/mips/host-signal.h
@@ -1 +1,61 @@ 
-#define HOST_SIGNAL_PLACEHOLDER
+/*
+ * host-signal.h: signal info dependent on the host architecture
+ *
+ * Copyright (C) 2021 Linaro Limited
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef MIPS_HOST_SIGNAL_H
+#define MIPS_HOST_SIGNAL_H
+
+static inline uintptr_t host_signal_pc(ucontext_t *uc)
+{
+    return uc->uc_mcontext.pc;
+}
+
+#if defined(__misp16) || defined(__mips_micromips)
+#error "Unsupported encoding"
+#endif
+
+static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
+{
+    uint32_t insn = *(uint32_t *)host_signal_pc(uc);
+
+    /* Detect all store instructions at program counter. */
+    switch ((insn >> 26) & 077) {
+    case 050: /* SB */
+    case 051: /* SH */
+    case 052: /* SWL */
+    case 053: /* SW */
+    case 054: /* SDL */
+    case 055: /* SDR */
+    case 056: /* SWR */
+    case 070: /* SC */
+    case 071: /* SWC1 */
+    case 074: /* SCD */
+    case 075: /* SDC1 */
+    case 077: /* SD */
+#if !defined(__mips_isa_rev) || __mips_isa_rev < 6
+    case 072: /* SWC2 */
+    case 076: /* SDC2 */
+#endif
+        return true;
+    case 023: /* COP1X */
+        /*
+         * Required in all versions of MIPS64 since
+         * MIPS64r1 and subsequent versions of MIPS32r2.
+         */
+        switch (insn & 077) {
+        case 010: /* SWXC1 */
+        case 011: /* SDXC1 */
+        case 015: /* SUXC1 */
+            return true;
+        }
+        break;
+    }
+    return false;
+}
+
+#endif
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 0810b71ba0..42d1ad189b 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -255,57 +255,7 @@  void *probe_access(CPUArchState *env, target_ulong addr, int size,
     return size ? g2h(env_cpu(env), addr) : NULL;
 }
 
-#if defined(__mips__)
-
-#if defined(__misp16) || defined(__mips_micromips)
-#error "Unsupported encoding"
-#endif
-
-int cpu_signal_handler(int host_signum, void *pinfo,
-                       void *puc)
-{
-    siginfo_t *info = pinfo;
-    ucontext_t *uc = puc;
-    uintptr_t pc = uc->uc_mcontext.pc;
-    uint32_t insn = *(uint32_t *)pc;
-    int is_write = 0;
-
-    /* Detect all store instructions at program counter. */
-    switch((insn >> 26) & 077) {
-    case 050: /* SB */
-    case 051: /* SH */
-    case 052: /* SWL */
-    case 053: /* SW */
-    case 054: /* SDL */
-    case 055: /* SDR */
-    case 056: /* SWR */
-    case 070: /* SC */
-    case 071: /* SWC1 */
-    case 074: /* SCD */
-    case 075: /* SDC1 */
-    case 077: /* SD */
-#if !defined(__mips_isa_rev) || __mips_isa_rev < 6
-    case 072: /* SWC2 */
-    case 076: /* SDC2 */
-#endif
-        is_write = 1;
-        break;
-    case 023: /* COP1X */
-        /* Required in all versions of MIPS64 since
-           MIPS64r1 and subsequent versions of MIPS32r2. */
-        switch (insn & 077) {
-        case 010: /* SWXC1 */
-        case 011: /* SDXC1 */
-        case 015: /* SUXC1 */
-            is_write = 1;
-        }
-        break;
-    }
-
-    return handle_cpu_signal(pc, info, is_write, &uc->uc_sigmask);
-}
-
-#elif defined(__riscv)
+#if defined(__riscv)
 
 int cpu_signal_handler(int host_signum, void *pinfo,
                        void *puc)