Both arm and thumb2 division are controlled by the same ISAR field,
which takes care of the arm implies thumb case. Having M imply
thumb2 division was wrong for cortex-m0, which is v6m and does not
have thumb2 at all, much less thumb2 division.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id:
20181016223115.24100-5-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
GET_FEATURE(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPv3);
GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
GET_FEATURE(ARM_FEATURE_VFP4, ARM_HWCAP_ARM_VFPv4);
- GET_FEATURE(ARM_FEATURE_ARM_DIV, ARM_HWCAP_ARM_IDIVA);
- GET_FEATURE(ARM_FEATURE_THUMB_DIV, ARM_HWCAP_ARM_IDIVT);
+ GET_FEATURE_ID(arm_div, ARM_HWCAP_ARM_IDIVA);
+ GET_FEATURE_ID(thumb_div, ARM_HWCAP_ARM_IDIVT);
/* All QEMU's VFPv3 CPUs have 32 registers, see VFP_DREG in translate.c.
* Note that the ARM_HWCAP_ARM_VFPv3D16 bit is always the inverse of
* ARM_HWCAP_ARM_VFPD32 (and so always clear for QEMU); it is unrelated
* Presence of EL2 itself is ARM_FEATURE_EL2, and of the
* Security Extensions is ARM_FEATURE_EL3.
*/
- set_feature(env, ARM_FEATURE_ARM_DIV);
+ assert(cpu_isar_feature(arm_div, cpu));
set_feature(env, ARM_FEATURE_LPAE);
set_feature(env, ARM_FEATURE_V7);
}
if (arm_feature(env, ARM_FEATURE_V5)) {
set_feature(env, ARM_FEATURE_V4T);
}
- if (arm_feature(env, ARM_FEATURE_M)) {
- set_feature(env, ARM_FEATURE_THUMB_DIV);
- }
- if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
- set_feature(env, ARM_FEATURE_THUMB_DIV);
- }
if (arm_feature(env, ARM_FEATURE_VFP4)) {
set_feature(env, ARM_FEATURE_VFP3);
set_feature(env, ARM_FEATURE_VFP_FP16);
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V7);
- set_feature(&cpu->env, ARM_FEATURE_THUMB_DIV);
- set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
set_feature(&cpu->env, ARM_FEATURE_V7MP);
set_feature(&cpu->env, ARM_FEATURE_PMSA);
cpu->midr = 0x411fc153; /* r1p3 */
ARM_FEATURE_VFP3,
ARM_FEATURE_VFP_FP16,
ARM_FEATURE_NEON,
- ARM_FEATURE_THUMB_DIV, /* divide supported in Thumb encoding */
ARM_FEATURE_M, /* Microcontroller profile. */
ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling. */
ARM_FEATURE_THUMB2EE,
ARM_FEATURE_V5,
ARM_FEATURE_STRONGARM,
ARM_FEATURE_VAPA, /* cp15 VA to PA lookups */
- ARM_FEATURE_ARM_DIV, /* divide supported in ARM encoding */
ARM_FEATURE_VFP4, /* VFPv4 (implies that NEON is v2) */
ARM_FEATURE_GENERIC_TIMER,
ARM_FEATURE_MVFR, /* Media and VFP Feature Registers 0 and 1 */
/*
* 32-bit feature tests via id registers.
*/
+static inline bool isar_feature_thumb_div(const ARMISARegisters *id)
+{
+ return FIELD_EX32(id->id_isar0, ID_ISAR0, DIVIDE) != 0;
+}
+
+static inline bool isar_feature_arm_div(const ARMISARegisters *id)
+{
+ return FIELD_EX32(id->id_isar0, ID_ISAR0, DIVIDE) > 1;
+}
+
static inline bool isar_feature_aa32_aes(const ARMISARegisters *id)
{
return FIELD_EX32(id->id_isar5, ID_ISAR5, AES) != 0;
case 1:
case 3:
/* SDIV, UDIV */
- if (!arm_dc_feature(s, ARM_FEATURE_ARM_DIV)) {
+ if (!dc_isar_feature(arm_div, s)) {
goto illegal_op;
}
if (((insn >> 5) & 7) || (rd != 15)) {
tmp2 = load_reg(s, rm);
if ((op & 0x50) == 0x10) {
/* sdiv, udiv */
- if (!arm_dc_feature(s, ARM_FEATURE_THUMB_DIV)) {
+ if (!dc_isar_feature(thumb_div, s)) {
goto illegal_op;
}
if (op & 0x20)