diff options
| author | Laurent Vivier <laurent@vivier.eu> | 2020-05-31 15:19:51 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2020-06-02 13:59:02 +0200 |
| commit | 250b1da35d579f42319af234f36207902ca4baa4 (patch) | |
| tree | bfa48b9d2fec045fb5d078a9b7776ada3a050b3b /target/m68k | |
| parent | 6a0e8bb4956c34328f4624e20bd3a6c2b1d90adc (diff) | |
target/m68k: implement opcode fetoxm1
Example provided in the launchpad bug fails with:
qemu: uncaught target signal 4 (Illegal instruction) - core dumped
Illegal instruction (core dumped)
It appears fetoxm1 is not implemented:
IN: expm1f
0x800005cc: fetoxm1x %fp2,%fp0
Disassembler disagrees with translator over instruction decoding
Please report this to qemu-devel@nongnu.org
(gdb) x/2hx 0x800005cc
0x800005cc: 0xf200 0x0808
This patch adds the instruction.
Bug: https://bugs.launchpad.net/qemu/+bug/1881450
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200531131951.631902-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'target/m68k')
| -rw-r--r-- | target/m68k/fpu_helper.c | 5 | ||||
| -rw-r--r-- | target/m68k/helper.h | 1 | ||||
| -rw-r--r-- | target/m68k/translate.c | 3 |
3 files changed, 9 insertions, 0 deletions
diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 36e6c704d1..9acf60dfd4 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -641,6 +641,11 @@ void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPReg *val) res->d = floatx80_atanh(val->d, &env->fp_status); } +void HELPER(fetoxm1)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_etoxm1(val->d, &env->fp_status); +} + void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_tanh(val->d, &env->fp_status); diff --git a/target/m68k/helper.h b/target/m68k/helper.h index feee7be626..77808497a9 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -83,6 +83,7 @@ DEF_HELPER_3(fatan, void, env, fp, fp) DEF_HELPER_3(fasin, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp) DEF_HELPER_3(fatanh, void, env, fp, fp) +DEF_HELPER_3(fetoxm1, void, env, fp, fp) DEF_HELPER_3(ftanh, void, env, fp, fp) DEF_HELPER_3(fsinh, void, env, fp, fp) DEF_HELPER_3(fcosh, void, env, fp, fp) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index c093f6c683..3fc67aa452 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5160,6 +5160,9 @@ DISAS_INSN(fpu) case 0x06: /* flognp1 */ gen_helper_flognp1(cpu_env, cpu_dest, cpu_src); break; + case 0x08: /* fetoxm1 */ + gen_helper_fetoxm1(cpu_env, cpu_dest, cpu_src); + break; case 0x09: /* ftanh */ gen_helper_ftanh(cpu_env, cpu_dest, cpu_src); break; |