From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 27 Apr 2023 12:56:32 +0000 (+0200)
Subject: target/hexagon: fix = vs. == mishap
X-Git-Tag: v8.1.0-rc0~115^2~12
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4354f3dbae3acf6a2116be361e4c497896270518;p=thirdparty%2Fqemu.git

target/hexagon: fix = vs. == mishap

**** Changes in v2 ****
Fix yyassert's for sign and zero extends

Coverity reports a parameter that is "set but never used".  This is caused
by an assignment operator being used instead of equality.

Co-authored-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Tested-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230428204411.1400931-1-tsimpson@quicinc.com>
---

diff --git a/target/hexagon/idef-parser/idef-parser.y b/target/hexagon/idef-parser/idef-parser.y
index 5f3907eb286..5c983954ed8 100644
--- a/target/hexagon/idef-parser/idef-parser.y
+++ b/target/hexagon/idef-parser/idef-parser.y
@@ -683,7 +683,7 @@ rvalue : FAIL
              yyassert(c, &@1, $5.type == IMMEDIATE &&
                       $5.imm.type == VALUE,
                       "SXT expects immediate values\n");
-             $$ = gen_extend_op(c, &@1, &$3, $5.imm.value, &$7, SIGNED);
+             $$ = gen_extend_op(c, &@1, &$3, 64, &$7, SIGNED);
          }
        | ZXT '(' rvalue ',' IMM ',' rvalue ')'
          {
@@ -691,7 +691,7 @@ rvalue : FAIL
              yyassert(c, &@1, $5.type == IMMEDIATE &&
                       $5.imm.type == VALUE,
                       "ZXT expects immediate values\n");
-             $$ = gen_extend_op(c, &@1, &$3, $5.imm.value, &$7, UNSIGNED);
+             $$ = gen_extend_op(c, &@1, &$3, 64, &$7, UNSIGNED);
          }
        | '(' rvalue ')'
          {
diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c
index 95500972696..7b5ebafec23 100644
--- a/target/hexagon/idef-parser/parser-helpers.c
+++ b/target/hexagon/idef-parser/parser-helpers.c
@@ -1120,7 +1120,7 @@ HexValue gen_extend_op(Context *c,
                        HexValue *value,
                        HexSignedness signedness)
 {
-    unsigned bit_width = (dst_width = 64) ? 64 : 32;
+    unsigned bit_width = (dst_width == 64) ? 64 : 32;
     HexValue value_m = *value;
     HexValue src_width_m = *src_width;