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target-mips: Status.UX/SX/KX enable 32-bit address wrapping

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In R6 the special behaviour for data references is also specified for Kernel
and Supervisor mode. Therefore MIPS_HFLAG_UX is replaced by generic
MIPS_HFLAG_AWRAP indicating enabled 32-bit address wrapping.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Leon Alrae 2014-06-27 08:49:04 +01:00
parent 4267d3e6e0
commit 01f7288579
2 changed files with 15 additions and 9 deletions
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6
target-mips/translate.c
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@ -1383,11 +1383,7 @@ static inline void gen_op_addr_add (DisasContext *ctx, TCGv ret, TCGv arg0, TCGv
tcg_gen_add_tl(ret, arg0, arg1);
#if defined(TARGET_MIPS64)
/* For compatibility with 32-bit code, data reference in user mode
with Status_UX = 0 should be casted to 32-bit and sign extended.
See the MIPS64 PRA manual, section 4.10. */
if (((ctx->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_UM) &&
!(ctx->hflags & MIPS_HFLAG_UX)) {
if (ctx->hflags & MIPS_HFLAG_AWRAP) {
tcg_gen_ext32s_i64(ret, ret);
}
#endif