From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu
Subject: [PATCH 3/3] target/m68k: Implement FTRAPcc
Date: Tue, 30 Nov 2021 11:37:52 +0100 [thread overview]
Message-ID: <20211130103752.72099-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20211130103752.72099-1-richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/m68k/translate.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index cf29f35d91..3c04f9d1a9 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -5547,6 +5547,43 @@ DISAS_INSN(fscc)
tcg_temp_free(tmp);
}
+DISAS_INSN(ftrapcc)
+{
+ DisasCompare c;
+ TCGLabel *over;
+ uint16_t ext;
+ int cond;
+
+ ext = read_im16(env, s);
+ cond = ext & 0x3f;
+
+ /* Consume and discard the immediate operand. */
+ switch (extract32(insn, 0, 3)) {
+ case 2: /* ftrapcc.w */
+ (void)read_im16(env, s);
+ break;
+ case 3: /* ftrapcc.l */
+ (void)read_im32(env, s);
+ break;
+ case 4: /* ftrapcc (no operand) */
+ break;
+ default:
+ /* Illegal insn */
+ disas_undef(env, s, insn);
+ return;
+ }
+
+ /* Jump over if !cond. */
+ gen_fcc_cond(&c, s, cond);
+ update_cc_op(s);
+ over = gen_new_label();
+ tcg_gen_brcond_i32(tcg_invert_cond(c.tcond), c.v1, c.v2, over);
+ free_cond(&c);
+
+ gen_exception(s, s->base.pc_next, EXCP_TRAPCC);
+ gen_set_label(over);
+}
+
#if defined(CONFIG_SOFTMMU)
DISAS_INSN(frestore)
{
@@ -6170,6 +6207,7 @@ void register_m68k_insns (CPUM68KState *env)
INSN(fbcc, f280, ffc0, CF_FPU);
INSN(fpu, f200, ffc0, FPU);
INSN(fscc, f240, ffc0, FPU);
+ INSN(ftrapcc, f278, ff80, FPU);
INSN(fbcc, f280, ff80, FPU);
#if defined(CONFIG_SOFTMMU)
INSN(frestore, f340, ffc0, CF_FPU);
--
2.25.1
next prev parent reply other threads:[~2021-11-30 10:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 10:37 [PATCH for-7.0 0/3] target/m68k: Implement conditional traps Richard Henderson
2021-11-30 10:37 ` [PATCH 1/3] target/m68k: Implement TRAPV Richard Henderson
2021-11-30 12:11 ` Laurent Vivier
2021-11-30 10:37 ` [PATCH 2/3] target/m68k: Implement TRAPcc Richard Henderson
2021-11-30 11:57 ` Laurent Vivier
2021-11-30 12:34 ` Richard Henderson
2021-11-30 10:37 ` Richard Henderson [this message]
2021-11-30 11:32 ` [PATCH 3/3] target/m68k: Implement FTRAPcc Richard Henderson
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