@@ -553,6 +553,12 @@ typedef struct CPUARMState {
float_status fp_status;
float_status fp_status_f16;
float_status standard_fp_status;
+
+ /* TODO: For system mode, represent all of zcr_el{1,2,3}.
+ * In the meantime, the composite value exposed to el0.
+ * Only the low 4 bits are defined, and set via syscall.
+ */
+ uint32_t zcr_el;
} vfp;
uint64_t exclusive_addr;
uint64_t exclusive_val;
@@ -2649,6 +2655,8 @@ static inline bool arm_cpu_data_is_big_endian(CPUARMState *env)
#define ARM_TBFLAG_TBI0_MASK (0x1ull << ARM_TBFLAG_TBI0_SHIFT)
#define ARM_TBFLAG_TBI1_SHIFT 1 /* TBI1 for EL0/1 */
#define ARM_TBFLAG_TBI1_MASK (0x1ull << ARM_TBFLAG_TBI1_SHIFT)
+#define ARM_TBFLAG_ZCR_LEN_SHIFT 2 /* Composite ZCR_EL1/2/3.LEN */
+#define ARM_TBFLAG_ZCR_LEN_MASK (0xfull << ARM_TBFLAG_ZCR_LEN_SHIFT)
/* some convenience accessor macros */
#define ARM_TBFLAG_AARCH64_STATE(F) \
@@ -2685,6 +2693,8 @@ static inline bool arm_cpu_data_is_big_endian(CPUARMState *env)
(((F) & ARM_TBFLAG_TBI0_MASK) >> ARM_TBFLAG_TBI0_SHIFT)
#define ARM_TBFLAG_TBI1(F) \
(((F) & ARM_TBFLAG_TBI1_MASK) >> ARM_TBFLAG_TBI1_SHIFT)
+#define ARM_TBFLAG_ZCR_LEN(F) \
+ (((F) & ARM_TBFLAG_ZCR_LEN_MASK) >> ARM_TBFLAG_ZCR_LEN_SHIFT)
static inline bool bswap_code(bool sctlr_b)
{
@@ -2818,34 +2828,39 @@ static inline uint32_t arm_regime_tbi1(CPUARMState *env, ARMMMUIdx mmu_idx)
#endif
static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
- target_ulong *cs_base, uint32_t *flags)
+ target_ulong *cs_base, uint32_t *pflags)
{
ARMMMUIdx mmu_idx = core_to_arm_mmu_idx(env, cpu_mmu_index(env, false));
+ uint32_t flags;
+
if (is_a64(env)) {
*pc = env->pc;
- *flags = ARM_TBFLAG_AARCH64_STATE_MASK;
+ flags = ARM_TBFLAG_AARCH64_STATE_MASK;
/* Get control bits for tagged addresses */
- *flags |= (arm_regime_tbi0(env, mmu_idx) << ARM_TBFLAG_TBI0_SHIFT);
- *flags |= (arm_regime_tbi1(env, mmu_idx) << ARM_TBFLAG_TBI1_SHIFT);
+ flags |= (arm_regime_tbi0(env, mmu_idx) << ARM_TBFLAG_TBI0_SHIFT);
+ flags |= (arm_regime_tbi1(env, mmu_idx) << ARM_TBFLAG_TBI1_SHIFT);
+ /* Get SVE vector length */
+ flags |= ((env->vfp.zcr_el << ARM_TBFLAG_ZCR_LEN_SHIFT)
+ & ARM_TBFLAG_ZCR_LEN_MASK);
} else {
*pc = env->regs[15];
- *flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
+ flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
| (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
| (env->vfp.vec_stride << ARM_TBFLAG_VECSTRIDE_SHIFT)
| (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT)
| (arm_sctlr_b(env) << ARM_TBFLAG_SCTLR_B_SHIFT);
if (!(access_secure_reg(env))) {
- *flags |= ARM_TBFLAG_NS_MASK;
+ flags |= ARM_TBFLAG_NS_MASK;
}
if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)
|| arm_el_is_aa64(env, 1)) {
- *flags |= ARM_TBFLAG_VFPEN_MASK;
+ flags |= ARM_TBFLAG_VFPEN_MASK;
}
- *flags |= (extract32(env->cp15.c15_cpar, 0, 2)
- << ARM_TBFLAG_XSCALE_CPAR_SHIFT);
+ flags |= (extract32(env->cp15.c15_cpar, 0, 2)
+ << ARM_TBFLAG_XSCALE_CPAR_SHIFT);
}
- *flags |= (arm_to_core_mmu_idx(mmu_idx) << ARM_TBFLAG_MMUIDX_SHIFT);
+ flags |= (arm_to_core_mmu_idx(mmu_idx) << ARM_TBFLAG_MMUIDX_SHIFT);
/* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
* states defined in the ARM ARM for software singlestep:
@@ -2855,26 +2870,27 @@ static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
* 1 1 Active-not-pending
*/
if (arm_singlestep_active(env)) {
- *flags |= ARM_TBFLAG_SS_ACTIVE_MASK;
+ flags |= ARM_TBFLAG_SS_ACTIVE_MASK;
if (is_a64(env)) {
if (env->pstate & PSTATE_SS) {
- *flags |= ARM_TBFLAG_PSTATE_SS_MASK;
+ flags |= ARM_TBFLAG_PSTATE_SS_MASK;
}
} else {
if (env->uncached_cpsr & PSTATE_SS) {
- *flags |= ARM_TBFLAG_PSTATE_SS_MASK;
+ flags |= ARM_TBFLAG_PSTATE_SS_MASK;
}
}
}
if (arm_cpu_data_is_big_endian(env)) {
- *flags |= ARM_TBFLAG_BE_DATA_MASK;
+ flags |= ARM_TBFLAG_BE_DATA_MASK;
}
- *flags |= fp_exception_el(env) << ARM_TBFLAG_FPEXC_EL_SHIFT;
+ flags |= fp_exception_el(env) << ARM_TBFLAG_FPEXC_EL_SHIFT;
if (arm_v7m_is_handler_mode(env)) {
- *flags |= ARM_TBFLAG_HANDLER_MASK;
+ flags |= ARM_TBFLAG_HANDLER_MASK;
}
+ *pflags = flags;
*cs_base = 0;
}
@@ -34,6 +34,7 @@ typedef struct DisasContext {
bool vfp_enabled; /* FP enabled via FPSCR.EN */
int vec_len;
int vec_stride;
+ int sve_len; /* SVE vector length in bytes */
bool v7m_handler_mode;
bool v8m_secure; /* true if v8M and we're in Secure mode */
/* Immediate value in AArch32 SVC insn; must be set if is_jmp == DISAS_SWI
@@ -149,6 +149,8 @@ static void arm_cpu_reset(CPUState *s)
env->cp15.sctlr_el[1] |= SCTLR_UCT | SCTLR_UCI | SCTLR_DZE;
/* and to the FP/Neon instructions */
env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 2, 3);
+ /* Set the SVE vector length to maximum. */
+ env->vfp.zcr_el = ARM_MAX_VQ - 1;
#else
/* Reset into the highest available EL */
if (arm_feature(env, ARM_FEATURE_EL3)) {
@@ -549,9 +549,7 @@ static inline int vec_full_reg_offset(DisasContext *s, int regno)
/* Return the byte size of the "whole" vector register, VL / 8. */
static inline int vec_full_reg_size(DisasContext *s)
{
- /* FIXME SVE: We should put the composite ZCR_EL* value into tb->flags.
- In the meantime this is just the AdvSIMD length of 128. */
- return 128 / 8;
+ return s->sve_len;
}
/* Return a newly allocated pointer to the vector register. */
@@ -12771,6 +12769,7 @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase,
dc->fp_excp_el = ARM_TBFLAG_FPEXC_EL(dc->base.tb->flags);
dc->vec_len = 0;
dc->vec_stride = 0;
+ dc->sve_len = (ARM_TBFLAG_ZCR_LEN(dc->base.tb->flags) + 1) * 16;
dc->cp_regs = arm_cpu->cp_regs;
dc->features = env->features;
This has a stub(-ish) implementation of ZCR, in that it does not implement _EL[123], or wire up the system register properly. However, it is enough for CONFIG_USER_ONLY. We will need VQ in tb->flags in order to pass the true vector size to the generic vector expanders. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/arm/cpu.h | 48 ++++++++++++++++++++++++++++++---------------- target/arm/translate.h | 1 + target/arm/cpu.c | 2 ++ target/arm/translate-a64.c | 5 ++--- 4 files changed, 37 insertions(+), 19 deletions(-) -- 2.14.3