commit 3116f020d455a0bff7bdc86c20dfc1a63a36f729
author Richard Henderson <richard.henderson@linaro.org> Wed Feb 15 19:45:03 2023 -1000
committer Laurent Vivier <laurent@vivier.eu> Fri Mar 10 20:45:47 2023 +0100
tree 44a8d36487344f82b3b4f874bc30c39d1a712521
parent 895ce8bb534e66ca418dea62ae67a92dccafb2e1

linux-user/sparc: Tidy syscall trap

Use TT_TRAP.

For sparc32, 0x88 is the "Slowaris" system call, currently BAD_TRAP
in the kernel's ttable_32.S.  For sparc64, 0x110 is tl0_linux32, the
sparc32 trap, now folded into the TARGET_ABI32 case via TT_TRAP.

For sparc64, there does still exist trap 0x111 as tl0_oldlinux64,
which was replaced by 0x16d as tl0_linux64 in 1998.  Since no one
has noticed, don't bother implementing it now.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230216054516.1267305-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/sparc/cpu_loop.c

diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index c120c42..d31ea05 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -149,6 +149,12 @@
 #endif
 }
 
+#ifdef TARGET_ABI32
+#define TARGET_TT_SYSCALL  (TT_TRAP + 0x10) /* t_linux */
+#else
+#define TARGET_TT_SYSCALL  (TT_TRAP + 0x6d) /* tl0_linux64 */
+#endif
+
 void cpu_loop (CPUSPARCState *env)
 {
     CPUState *cs = env_cpu(env);
@@ -167,13 +173,7 @@
         }
 
         switch (trapnr) {
-#ifndef TARGET_SPARC64
-        case 0x88:
-        case 0x90:
-#else
-        case 0x110:
-        case 0x16d:
-#endif
+        case TARGET_TT_SYSCALL:
             ret = do_syscall (env, env->gregs[1],
                               env->regwptr[0], env->regwptr[1],
                               env->regwptr[2], env->regwptr[3],