LBX performs an indexed signed byte load from base + index and writes the sign-extended result to rd.
Wire the existing indexed-load helper to MO_SB so Octeon user-mode binaries can use the signed byte variant alongside the existing LBUX path. Reviewed-by: Richard Henderson <[email protected]> Signed-off-by: James Hilliard <[email protected]> --- Changes v2 -> v3: - Split LBX out of the combined Octeon arithmetic and memory instruction patch. (requested by Richard Henderson) --- target/mips/tcg/octeon.decode | 1 + target/mips/tcg/octeon_translate.c | 1 + 2 files changed, 2 insertions(+) diff --git a/target/mips/tcg/octeon.decode b/target/mips/tcg/octeon.decode index a2bfd0751d..efb1a48b38 100644 --- a/target/mips/tcg/octeon.decode +++ b/target/mips/tcg/octeon.decode @@ -49,4 +49,5 @@ SNEI 011100 rs:5 rt:5 imm:s10 101111 &cmpi LWX 011111 ..... ..... ..... 00000 001010 @lx LHX 011111 ..... ..... ..... 00100 001010 @lx LBUX 011111 ..... ..... ..... 00110 001010 @lx +LBX 011111 ..... ..... ..... 10110 001010 @lx LDX 011111 ..... ..... ..... 01000 001010 @lx diff --git a/target/mips/tcg/octeon_translate.c b/target/mips/tcg/octeon_translate.c index 1893bf359f..ecdce6ab9b 100644 --- a/target/mips/tcg/octeon_translate.c +++ b/target/mips/tcg/octeon_translate.c @@ -161,6 +161,7 @@ static bool trans_lx(DisasContext *ctx, arg_lx *a, MemOp mop) return true; } +TRANS(LBX, trans_lx, MO_SB); TRANS(LBUX, trans_lx, MO_UB); TRANS(LHX, trans_lx, MO_SW); TRANS(LWX, trans_lx, MO_SL); -- 2.54.0
