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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62f; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Use bit masking instead of an if tree. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- linux-user/arm/cpu_loop.c | 50 ++++++++++++++------------------------- 1 file changed, 18 insertions(+), 32 deletions(-) diff --git a/linux-user/arm/cpu_loop.c b/linux-user/arm/cpu_loop.c index 5f61d25717..69632d15be 100644 --- a/linux-user/arm/cpu_loop.c +++ b/linux-user/arm/cpu_loop.c @@ -228,6 +228,7 @@ static bool emulate_arm_fpa11(CPUARMState *env, uint32_= t opcode) { TaskState *ts =3D env_cpu(env)->opaque; int rc =3D EmulateAll(opcode, &ts->fpa, env); + int raise, enabled; =20 if (rc =3D=3D 0) { /* Illegal instruction */ @@ -240,28 +241,31 @@ static bool emulate_arm_fpa11(CPUARMState *env, uint3= 2_t opcode) } =20 /* FP exception */ - int arm_fpe =3D 0; + rc =3D -rc; + raise =3D 0; =20 /* Translate softfloat flags to FPSR flags */ - if (-rc & float_flag_invalid) { - arm_fpe |=3D BIT_IOC; + if (rc & float_flag_invalid) { + raise |=3D BIT_IOC; } - if (-rc & float_flag_divbyzero) { - arm_fpe |=3D BIT_DZC; + if (rc & float_flag_divbyzero) { + raise |=3D BIT_DZC; } - if (-rc & float_flag_overflow) { - arm_fpe |=3D BIT_OFC; + if (rc & float_flag_overflow) { + raise |=3D BIT_OFC; } - if (-rc & float_flag_underflow) { - arm_fpe |=3D BIT_UFC; + if (rc & float_flag_underflow) { + raise |=3D BIT_UFC; } - if (-rc & float_flag_inexact) { - arm_fpe |=3D BIT_IXC; + if (rc & float_flag_inexact) { + raise |=3D BIT_IXC; } =20 - /* Exception enabled? */ - FPSR fpsr =3D ts->fpa.fpsr; - if (fpsr & (arm_fpe << 16)) { + /* Accumulate unenabled exceptions */ + enabled =3D ts->fpa.fpsr >> 16; + ts->fpa.fpsr |=3D raise & ~enabled; + + if (raise & enabled) { target_siginfo_t info =3D { }; =20 /* @@ -275,24 +279,6 @@ static bool emulate_arm_fpa11(CPUARMState *env, uint32= _t opcode) } else { env->regs[15] +=3D 4; } - - /* Accumulate unenabled exceptions */ - if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC)) { - fpsr |=3D BIT_IXC; - } - if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC)) { - fpsr |=3D BIT_UFC; - } - if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC)) { - fpsr |=3D BIT_OFC; - } - if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC)) { - fpsr |=3D BIT_DZC; - } - if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC)) { - fpsr |=3D BIT_IOC; - } - ts->fpa.fpsr =3D fpsr; return true; } =20 --=20 2.25.1