linux-user: Improve strace output of pread64() and pwrite64()

Make the strace look nicer for those two syscalls. Signed-off-by: Helge Deller <[email protected]> Reviewed-by: Richard Henderson <[email protected]>
lowRISC · Jul 8, 2023 · 036cf16 · 036cf16
1 parent dca4c83
commit 036cf16
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Showing 2 changed files with 21 additions and 2 deletions.
diff --git a/linux-user/strace.c b/linux-user/strace.c
@@ -3999,6 +3999,25 @@ print_tgkill(CPUArchState *cpu_env, const struct syscallname *name,
 }
 #endif
 
+#if defined(TARGET_NR_pread64) || defined(TARGET_NR_pwrite64)
+static void
+print_pread64(CPUArchState *cpu_env, const struct syscallname *name,
+        abi_long arg0, abi_long arg1, abi_long arg2,
+        abi_long arg3, abi_long arg4, abi_long arg5)
+{
+    if (regpairs_aligned(cpu_env, TARGET_NR_pread64)) {
+        arg3 = arg4;
+        arg4 = arg5;
+    }
+    print_syscall_prologue(name);
+    print_raw_param("%d", arg0, 0);
+    print_pointer(arg1, 0);
+    print_raw_param("%d", arg2, 0);
+    print_raw_param("%" PRIu64, target_offset64(arg3, arg4), 1);
+    print_syscall_epilogue(name);
+}
+#endif
+
 #ifdef TARGET_NR_statx
 static void
 print_statx(CPUArchState *cpu_env, const struct syscallname *name,

diff --git a/linux-user/strace.list b/linux-user/strace.list
@@ -1068,7 +1068,7 @@
 { TARGET_NR_prctl, "prctl" , NULL, NULL, NULL },
 #endif
 #ifdef TARGET_NR_pread64
-{ TARGET_NR_pread64, "pread64" , NULL, NULL, NULL },
+{ TARGET_NR_pread64, "pread64" , NULL, print_pread64, NULL },
 #endif
 #ifdef TARGET_NR_preadv
 { TARGET_NR_preadv, "preadv" , NULL, NULL, NULL },
@@ -1099,7 +1099,7 @@
 { TARGET_NR_putpmsg, "putpmsg" , NULL, NULL, NULL },
 #endif
 #ifdef TARGET_NR_pwrite64
-{ TARGET_NR_pwrite64, "pwrite64" , NULL, NULL, NULL },
+{ TARGET_NR_pwrite64, "pwrite64" , NULL, print_pread64, NULL },
 #endif
 #ifdef TARGET_NR_pwritev
 { TARGET_NR_pwritev, "pwritev" , NULL, NULL, NULL },