fcvt.d.h and fcvt.h.d access a 64-bit double held in a register pair, so under Zdinx/Zhinxmin the odd-rd (fcvt.d.h) and odd-rs1 (fcvt.h.d) encodings are reserved. Add the missing REQUIRE_EVEN checks so those encodings raise an illegal-instruction exception instead of retiring.
Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/4109 Signed-off-by: wangyang <[email protected]> --- 1 file changed, 2 insertions(+), 0 deletions(-) diff --git a/target/riscv/tcg/insn_trans/trans_rvzfh.c.inc b/target/riscv/tcg/insn_trans/trans_rvzfh.c.inc index f36b46c2118..6ee71506d62 100644 --- a/target/riscv/tcg/insn_trans/trans_rvzfh.c.inc +++ b/target/riscv/tcg/insn_trans/trans_rvzfh.c.inc @@ -413,6 +413,7 @@ static bool trans_fcvt_d_h(DisasContext *ctx, arg_fcvt_d_h *a) REQUIRE_FPU; REQUIRE_ZFHMIN_OR_ZHINXMIN(ctx); REQUIRE_ZDINX_OR_D(ctx); + REQUIRE_EVEN(ctx, a->rd); TCGv_i64 dest = dest_fpr(ctx, a->rd); TCGv_i64 src1 = get_fpr_hs(ctx, a->rs1); @@ -447,6 +448,7 @@ static bool trans_fcvt_h_d(DisasContext *ctx, arg_fcvt_h_d *a) REQUIRE_FPU; REQUIRE_ZFHMIN_OR_ZHINXMIN(ctx); REQUIRE_ZDINX_OR_D(ctx); + REQUIRE_EVEN(ctx, a->rs1); TCGv_i64 dest = dest_fpr(ctx, a->rd); TCGv_i64 src1 = get_fpr_d(ctx, a->rs1);
