[PATCH] target/sparc: resolve ASI_USERTXT correctly

[M Bazz]

fixes a longstanding bug which causes a "Nonparity Synchronous Error"
kernel panic while using a debugger on Solaris / SunOS systems. The panic
would occur on the first attempt to single-step the process.

The problem stems from an lda instruction on ASI_USERTXT (8). This asi
was not being resolved correctly by resolve_asi().

Further details can be found in #2281

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2281
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2059
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1609
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1166

Signed-off-by: M Bazz <bazz@bazz1.com>
---
 target/sparc/translate.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 319934d9bd..1596005e22 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -3,6 +3,7 @@
 
    Copyright (C) 2003 Thomas M. Ogrisegg <tom@fnord.at>
    Copyright (C) 2003-2005 Fabrice Bellard
+   Copyright (C) 2024 M Bazz <bazz@bazz1.com>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -1159,6 +1160,7 @@ static DisasASI resolve_asi(DisasContext *dc, int asi, 
MemOp memop)
                || (asi == ASI_USERDATA
                    && (dc->def->features & CPU_FEATURE_CASA))) {
         switch (asi) {
+        case ASI_USERTXT:    /* User text access */
         case ASI_USERDATA:   /* User data access */
             mem_idx = MMU_USER_IDX;
             type = GET_ASI_DIRECT;
-- 
2.43.0