From: Thomas Ogrisegg <[email protected]>

For x86_64 a 16 bit push op (pushw) of a memory address would generate
a 64 bit store on the stack instead of a 16 bit store.

For example:
        pushw (%rax)

behaves like
        pushq (%rax)

which is incorrect.

This patch fixes that.

Signed-off-by: Thomas Ogrisegg <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]>
(cherry picked from commit 5a2faa0a0a2cbdad4a108a0e122b0e51b9bc94fd)
Signed-off-by: Michael Tokarev <[email protected]>

diff --git a/target/i386/tcg/decode-new.c.inc b/target/i386/tcg/decode-new.c.inc
index f4cfc196b8..1a3ee3b1f6 100644
--- a/target/i386/tcg/decode-new.c.inc
+++ b/target/i386/tcg/decode-new.c.inc
@@ -1541,7 +1541,7 @@ static void decode_group4_5(DisasContext *s, CPUX86State 
*env, X86OpEntry *entry
         [0x0b] = X86_OP_ENTRYr(CALLF_m, M,p),
         [0x0c] = X86_OP_ENTRYr(JMP_m,   E,f64,                         zextT0),
         [0x0d] = X86_OP_ENTRYr(JMPF_m,  M,p),
-        [0x0e] = X86_OP_ENTRYr(PUSH,    E,f64),
+        [0x0e] = X86_OP_ENTRYr(PUSH,    E,d64),
     };
 
     int w = (*b & 1);
-- 
2.47.3


Reply via email to