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[PATCH 02/14] linux-user/sparc: Tidy syscall trap


From: Richard Henderson
Subject: [PATCH 02/14] linux-user/sparc: Tidy syscall trap
Date: Wed, 1 Feb 2023 14:51:52 -1000

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, as also
seen in the adjacent code.  We do not implement multiple abis,
so treat this as !defined(CONFIG_COMPAT), which vectors this
case to BTRAP.  This was presumably a typo for 0x111, which is
the "old" linux64 syscall number.  Both old and new linux64
syscalls traps vector to LINUX_64BIT_SYSCALL_TRAP.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/sparc/cpu_loop.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index c120c42278..18d5c24af1 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -167,12 +167,11 @@ void cpu_loop (CPUSPARCState *env)
         }
 
         switch (trapnr) {
-#ifndef TARGET_SPARC64
-        case 0x88:
-        case 0x90:
+#ifdef TARGET_SPARC64
+        case TT_TRAP + 0x11: /* tl0_oldlinux64 */
+        case TT_TRAP + 0x6d: /* tl0_linux64 */
 #else
-        case 0x110:
-        case 0x16d:
+        case TT_TRAP + 0x10: /* t_linux */
 #endif
             ret = do_syscall (env, env->gregs[1],
                               env->regwptr[0], env->regwptr[1],
-- 
2.34.1




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