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target-m68k: cmp manages word and bytes operands

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Backports commit ff99b952c8280853801fe14f7ae62d0f87464f7d from qemu
This commit is contained in:
Laurent Vivier 2018-02-28 08:37:38 -05:00 committed by Lioncash
parent fc28e8127f
commit f7c29f73b3
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 12 additions and 6 deletions
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18
qemu/target-m68k/translate.c
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@ -568,6 +568,14 @@ static void gen_logic_cc(DisasContext *s, TCGv val, int opsize)
set_cc_op(s, CC_OP_LOGIC);
}
static void gen_update_cc_cmp(DisasContext *s, TCGv dest, TCGv src, int opsize)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
tcg_gen_mov_i32(tcg_ctx, tcg_ctx->QREG_CC_N, dest);
tcg_gen_mov_i32(tcg_ctx, tcg_ctx->QREG_CC_V, src);
set_cc_op(s, CC_OP_CMPB + opsize);
}
static void gen_update_cc_add(DisasContext *s, TCGv dest, TCGv src, int opsize)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
@ -2192,10 +2200,9 @@ DISAS_INSN(cmp)
int opsize;
opsize = insn_opsize(insn);
SRC_EA(env, src, opsize, -1, NULL);
reg = DREG(insn, 9);
gen_update_cc_add(s, reg, src, OS_LONG);
set_cc_op(s, CC_OP_CMPL);
SRC_EA(env, src, opsize, 1, NULL);
reg = gen_extend(s, DREG(insn, 9), opsize, 1);
gen_update_cc_cmp(s, reg, src, opsize);
}
DISAS_INSN(cmpa)
@ -2212,8 +2219,7 @@ DISAS_INSN(cmpa)
}
SRC_EA(env, src, opsize, 1, NULL);
reg = AREG(insn, 9);
gen_update_cc_add(s, reg, src, OS_LONG);
set_cc_op(s, CC_OP_CMPL);
gen_update_cc_cmp(s, reg, src, opsize);
}
DISAS_INSN(eor)