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target/mips: Factor mo_endian_rev() out of MXU code

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Instead of swapping the reversed target endianness
using MO_BSWAP, directly return the correct endianness.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241010215015.44326-7-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-10-10 16:00:25 -03:00
parent 54821ff6e9
commit e9c26e7740
2 changed files with 9 additions and 4 deletions
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8
target/mips/tcg/mxu_translate.c
View File

@ -1533,7 +1533,7 @@ static void gen_mxu_s32ldxx(DisasContext *ctx, bool reversed, bool postinc)
tcg_gen_add_tl(t0, t0, t1);
tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx,
(MO_TESL ^ (reversed ? MO_BSWAP : 0)) |
MO_SL | mo_endian_rev(ctx, reversed) |
ctx->default_tcg_memop_mask);
gen_store_mxu_gpr(t1, XRa);
@ -1569,7 +1569,7 @@ static void gen_mxu_s32stxx(DisasContext *ctx, bool reversed, bool postinc)
gen_load_mxu_gpr(t1, XRa);
tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx,
(MO_TESL ^ (reversed ? MO_BSWAP : 0)) |
MO_SL | mo_endian_rev(ctx, reversed) |
ctx->default_tcg_memop_mask);
if (postinc) {
@ -1605,7 +1605,7 @@ static void gen_mxu_s32ldxvx(DisasContext *ctx, bool reversed,
tcg_gen_add_tl(t0, t0, t1);
tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx,
(MO_TESL ^ (reversed ? MO_BSWAP : 0)) |
MO_SL | mo_endian_rev(ctx, reversed) |
ctx->default_tcg_memop_mask);
gen_store_mxu_gpr(t1, XRa);
@ -1675,7 +1675,7 @@ static void gen_mxu_s32stxvx(DisasContext *ctx, bool reversed,
gen_load_mxu_gpr(t1, XRa);
tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx,
(MO_TESL ^ (reversed ? MO_BSWAP : 0)) |
MO_SL | mo_endian_rev(ctx, reversed) |
ctx->default_tcg_memop_mask);
if (postinc) {

5
target/mips/tcg/translate.h
View File

@ -240,4 +240,9 @@ static inline bool disas_is_bigendian(DisasContext *ctx)
return extract32(ctx->CP0_Config0, CP0C0_BE, 1);
}
static inline MemOp mo_endian_rev(DisasContext *dc, bool reversed)
{
return disas_is_bigendian(dc) ^ reversed ? MO_BE : MO_LE;
}
#endif