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target-m68k: add addressing modes to neg

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Backports commit 227de713e0f4224a82c32991b4e4c4973381426b from qemu
This commit is contained in:
Laurent Vivier 2018-02-28 07:07:21 -05:00 committed by Lioncash
parent 3558b93f11
commit bc27695926
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 12 additions and 8 deletions
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20
qemu/target-m68k/translate.c
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@ -1665,16 +1665,20 @@ DISAS_INSN(move_from_ccr)
DISAS_INSN(neg)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv reg;
TCGv src1;
TCGv dest;
TCGv addr;
int opsize;
reg = DREG(insn, 0);
src1 = tcg_temp_new(tcg_ctx);
tcg_gen_mov_i32(tcg_ctx, src1, reg);
tcg_gen_neg_i32(tcg_ctx, reg, src1);
gen_update_cc_add(s, reg, src1, OS_LONG);
tcg_gen_setcondi_i32(tcg_ctx, TCG_COND_NE, tcg_ctx->QREG_CC_X, src1, 0);
set_cc_op(s, CC_OP_SUBL);
opsize = insn_opsize(insn);
SRC_EA(env, src1, opsize, 1, &addr);
dest = tcg_temp_new(tcg_ctx);
tcg_gen_neg_i32(tcg_ctx, dest, src1);
set_cc_op(s, CC_OP_SUBB + opsize);
gen_update_cc_add(s, dest, src1, opsize);
tcg_gen_setcondi_i32(tcg_ctx, TCG_COND_NE, tcg_ctx->QREG_CC_X, dest, 0);
DEST_EA(env, insn, opsize, dest, &addr);
tcg_temp_free(tcg_ctx, dest);
}
static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only)