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[PATCH 1/3] target/m68k: Implement TRAPV
From: |
Richard Henderson |
Subject: |
[PATCH 1/3] target/m68k: Implement TRAPV |
Date: |
Tue, 30 Nov 2021 11:37:50 +0100 |
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/m68k/translate.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index af43c8eab8..858ba761fc 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -4863,6 +4863,22 @@ DISAS_INSN(trap)
gen_exception(s, s->base.pc_next, EXCP_TRAP0 + (insn & 0xf));
}
+static void do_trapcc(DisasContext *s, int cond)
+{
+ TCGLabel *over = gen_new_label();
+
+ /* Jump over if !cond. */
+ gen_jmpcc(s, cond ^ 1, over);
+
+ gen_exception(s, s->base.pc_next, EXCP_TRAPCC);
+ gen_set_label(over);
+}
+
+DISAS_INSN(trapv)
+{
+ do_trapcc(s, 9); /* VS */
+}
+
static void gen_load_fcr(DisasContext *s, TCGv res, int reg)
{
switch (reg) {
@@ -6026,6 +6042,7 @@ void register_m68k_insns (CPUM68KState *env)
BASE(nop, 4e71, ffff);
INSN(rtd, 4e74, ffff, RTD);
BASE(rts, 4e75, ffff);
+ INSN(trapv, 4e76, ffff, M68000);
INSN(rtr, 4e77, ffff, M68000);
BASE(jump, 4e80, ffc0);
BASE(jump, 4ec0, ffc0);
--
2.25.1