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authorPeter Maydell <peter.maydell@linaro.org>2014-03-11 13:20:23 +0000
committerPeter Maydell <peter.maydell@linaro.org>2014-03-11 13:20:23 +0000
commit0ca540dbaea142ec5c3e7a1d12db7139b8317f37 (patch)
tree58856f1ab0e13749b2826639ea11fa28341278d1
parented9b103d3e3102f17791ca53d4a8b17a3de929de (diff)
parent72c1d3af6e9c2745edfeaa71918a68bcee4b79db (diff)
downloadqemu-arm-0ca540dbaea142ec5c3e7a1d12db7139b8317f37.tar.gz
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140310' into staging
target-arm queue: * implement WFE as yield (improves performance with emulated SMP) * fixes to avoid undefined behaviour shifting left into sign bit * libvixl format string fixes for 32 bit hosts * fix build error when intptr_t and tcg_target_long are different sizes (eg x32) * implement PMCCNTR register * fix incorrect setting of E bit in CPSR (broke booting under KVM on ARM) # gpg: Signature made Mon 10 Mar 2014 15:05:25 GMT using RSA key ID 14360CDE # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" * remotes/pmaydell/tags/pull-target-arm-20140310: target-arm: Implement WFE as a yield operation hw/arm/musicpal: Avoid shifting left into sign bit hw/ssi/xilinx_spips.c: Avoid shifting left into sign bit hw/arm/omap1.c: Avoid shifting left into sign bit pxa2xx: Don't shift into sign bit libvixl: Fix format strings for several int64_t values target-arm: Fix intptr_t vs tcg_target_long target-arm: Implements the ARM PMCCNTR register target-arm: Fix incorrect setting of E bit in CPSR Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--disas/libvixl/a64/disasm-a64.cc20
-rw-r--r--hw/arm/musicpal.c4
-rw-r--r--hw/arm/omap1.c24
-rw-r--r--hw/arm/pxa2xx.c6
-rw-r--r--hw/arm/pxa2xx_gpio.c2
-rw-r--r--hw/arm/pxa2xx_pic.c4
-rw-r--r--hw/ssi/xilinx_spips.c4
-rw-r--r--include/exec/cpu-defs.h1
-rw-r--r--target-arm/cpu.h4
-rw-r--r--target-arm/helper.c91
-rw-r--r--target-arm/helper.h1
-rw-r--r--target-arm/op_helper.c9
-rw-r--r--target-arm/translate-a64.c2
-rw-r--r--target-arm/translate.c6
-rw-r--r--target-arm/translate.h2
15 files changed, 144 insertions, 36 deletions
diff --git a/disas/libvixl/a64/disasm-a64.cc b/disas/libvixl/a64/disasm-a64.cc
index 5c6b898ea6..5f172da7d3 100644
--- a/disas/libvixl/a64/disasm-a64.cc
+++ b/disas/libvixl/a64/disasm-a64.cc
@@ -1342,7 +1342,7 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
ASSERT(format[5] == 'L');
AppendToOutput("#0x%" PRIx64, instr->ImmMoveWide());
if (instr->ShiftMoveWide() > 0) {
- AppendToOutput(", lsl #%d", 16 * instr->ShiftMoveWide());
+ AppendToOutput(", lsl #%" PRId64, 16 * instr->ShiftMoveWide());
}
}
return 8;
@@ -1391,7 +1391,7 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
}
case 'F': { // IFPSingle, IFPDouble or IFPFBits.
if (format[3] == 'F') { // IFPFbits.
- AppendToOutput("#%d", 64 - instr->FPScale());
+ AppendToOutput("#%" PRId64, 64 - instr->FPScale());
return 8;
} else {
AppendToOutput("#0x%" PRIx64 " (%.4f)", instr->ImmFP(),
@@ -1412,23 +1412,23 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
return 5;
}
case 'P': { // IP - Conditional compare.
- AppendToOutput("#%d", instr->ImmCondCmp());
+ AppendToOutput("#%" PRId64, instr->ImmCondCmp());
return 2;
}
case 'B': { // Bitfields.
return SubstituteBitfieldImmediateField(instr, format);
}
case 'E': { // IExtract.
- AppendToOutput("#%d", instr->ImmS());
+ AppendToOutput("#%" PRId64, instr->ImmS());
return 8;
}
case 'S': { // IS - Test and branch bit.
- AppendToOutput("#%d", (instr->ImmTestBranchBit5() << 5) |
- instr->ImmTestBranchBit40());
+ AppendToOutput("#%" PRId64, (instr->ImmTestBranchBit5() << 5) |
+ instr->ImmTestBranchBit40());
return 2;
}
case 'D': { // IDebug - HLT and BRK instructions.
- AppendToOutput("#0x%x", instr->ImmException());
+ AppendToOutput("#0x%" PRIx64, instr->ImmException());
return 6;
}
default: {
@@ -1598,12 +1598,12 @@ int Disassembler::SubstituteExtendField(Instruction* instr,
(((instr->ExtendMode() == UXTW) && (instr->SixtyFourBits() == 0)) ||
(instr->ExtendMode() == UXTX))) {
if (instr->ImmExtendShift() > 0) {
- AppendToOutput(", lsl #%d", instr->ImmExtendShift());
+ AppendToOutput(", lsl #%" PRId64, instr->ImmExtendShift());
}
} else {
AppendToOutput(", %s", extend_mode[instr->ExtendMode()]);
if (instr->ImmExtendShift() > 0) {
- AppendToOutput(" #%d", instr->ImmExtendShift());
+ AppendToOutput(" #%" PRId64, instr->ImmExtendShift());
}
}
return 3;
@@ -1632,7 +1632,7 @@ int Disassembler::SubstituteLSRegOffsetField(Instruction* instr,
if (!((ext == UXTX) && (shift == 0))) {
AppendToOutput(", %s", extend_mode[ext]);
if (shift != 0) {
- AppendToOutput(" #%d", instr->SizeLS());
+ AppendToOutput(" #%" PRId64, instr->SizeLS());
}
}
return 9;
diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index d10b5dbb49..de542010aa 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -110,10 +110,10 @@
#define MP_PHY_88E3015 0x01410E20
/* TX descriptor status */
-#define MP_ETH_TX_OWN (1 << 31)
+#define MP_ETH_TX_OWN (1U << 31)
/* RX descriptor status */
-#define MP_ETH_RX_OWN (1 << 31)
+#define MP_ETH_RX_OWN (1U << 31)
/* Interrupt cause/mask bits */
#define MP_ETH_IRQ_RX_BIT 0
diff --git a/hw/arm/omap1.c b/hw/arm/omap1.c
index 47511d2cae..b433748c60 100644
--- a/hw/arm/omap1.c
+++ b/hw/arm/omap1.c
@@ -809,22 +809,26 @@ static inline void omap_pin_funcmux1_update(struct omap_mpu_state_s *s,
uint32_t diff, uint32_t value)
{
if (s->compat1509) {
- if (diff & (1 << 31)) /* MCBSP3_CLK_HIZ_DI */
- omap_clk_onoff(omap_findclk(s, "mcbsp3.clkx"),
- (value >> 31) & 1);
- if (diff & (1 << 1)) /* CLK32K */
- omap_clk_onoff(omap_findclk(s, "clk32k_out"),
- (~value >> 1) & 1);
+ if (diff & (1U << 31)) {
+ /* MCBSP3_CLK_HIZ_DI */
+ omap_clk_onoff(omap_findclk(s, "mcbsp3.clkx"), (value >> 31) & 1);
+ }
+ if (diff & (1 << 1)) {
+ /* CLK32K */
+ omap_clk_onoff(omap_findclk(s, "clk32k_out"), (~value >> 1) & 1);
+ }
}
}
static inline void omap_pin_modconf1_update(struct omap_mpu_state_s *s,
uint32_t diff, uint32_t value)
{
- if (diff & (1 << 31)) /* CONF_MOD_UART3_CLK_MODE_R */
- omap_clk_reparent(omap_findclk(s, "uart3_ck"),
- omap_findclk(s, ((value >> 31) & 1) ?
- "ck_48m" : "armper_ck"));
+ if (diff & (1U << 31)) {
+ /* CONF_MOD_UART3_CLK_MODE_R */
+ omap_clk_reparent(omap_findclk(s, "uart3_ck"),
+ omap_findclk(s, ((value >> 31) & 1) ?
+ "ck_48m" : "armper_ck"));
+ }
if (diff & (1 << 30)) /* CONF_MOD_UART2_CLK_MODE_R */
omap_clk_reparent(omap_findclk(s, "uart2_ck"),
omap_findclk(s, ((value >> 30) & 1) ?
diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index 904277a9da..04291488e4 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -259,7 +259,7 @@ static void pxa2xx_pwrmode_write(CPUARMState *env, const ARMCPRegInfo *ri,
case 1:
/* Idle */
- if (!(s->cm_regs[CCCR >> 2] & (1 << 31))) { /* CPDIS */
+ if (!(s->cm_regs[CCCR >> 2] & (1U << 31))) { /* CPDIS */
cpu_interrupt(CPU(s->cpu), CPU_INTERRUPT_HALT);
break;
}
@@ -496,7 +496,7 @@ typedef struct {
#define SSCR0_SSE (1 << 7)
#define SSCR0_RIM (1 << 22)
#define SSCR0_TIM (1 << 23)
-#define SSCR0_MOD (1 << 31)
+#define SSCR0_MOD (1U << 31)
#define SSCR0_DSS(x) (((((x) >> 16) & 0x10) | ((x) & 0xf)) + 1)
#define SSCR1_RIE (1 << 0)
#define SSCR1_TIE (1 << 1)
@@ -1006,7 +1006,7 @@ static void pxa2xx_rtc_write(void *opaque, hwaddr addr,
switch (addr) {
case RTTR:
- if (!(s->rttr & (1 << 31))) {
+ if (!(s->rttr & (1U << 31))) {
pxa2xx_rtc_hzupdate(s);
s->rttr = value;
pxa2xx_rtc_alarm_update(s, s->rtsr);
diff --git a/hw/arm/pxa2xx_gpio.c b/hw/arm/pxa2xx_gpio.c
index ca77f56c9f..07274285ab 100644
--- a/hw/arm/pxa2xx_gpio.c
+++ b/hw/arm/pxa2xx_gpio.c
@@ -110,7 +110,7 @@ static void pxa2xx_gpio_set(void *opaque, int line, int level)
}
bank = line >> 5;
- mask = 1 << (line & 31);
+ mask = 1U << (line & 31);
if (level) {
s->status[bank] |= s->rising[bank] & mask &
diff --git a/hw/arm/pxa2xx_pic.c b/hw/arm/pxa2xx_pic.c
index 345fa4a491..d37fb543e8 100644
--- a/hw/arm/pxa2xx_pic.c
+++ b/hw/arm/pxa2xx_pic.c
@@ -105,7 +105,7 @@ static inline uint32_t pxa2xx_pic_highest(PXA2xxPICState *s) {
for (i = PXA2XX_PIC_SRCS - 1; i >= 0; i --) {
irq = s->priority[i] & 0x3f;
- if ((s->priority[i] & (1 << 31)) && irq < PXA2XX_PIC_SRCS) {
+ if ((s->priority[i] & (1U << 31)) && irq < PXA2XX_PIC_SRCS) {
/* Source peripheral ID is valid. */
bit = 1 << (irq & 31);
int_set = (irq >= 32);
@@ -119,7 +119,7 @@ static inline uint32_t pxa2xx_pic_highest(PXA2xxPICState *s) {
if (mask[int_set] & bit & ~s->is_fiq[int_set]) {
/* IRQ asserted */
ichp &= 0x0000ffff;
- ichp |= (1 << 31) | (irq << 16);
+ ichp |= (1U << 31) | (irq << 16);
}
}
}
diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c
index 6a287464bf..8977243725 100644
--- a/hw/ssi/xilinx_spips.c
+++ b/hw/ssi/xilinx_spips.c
@@ -43,7 +43,7 @@
/* config register */
#define R_CONFIG (0x00 / 4)
-#define IFMODE (1 << 31)
+#define IFMODE (1U << 31)
#define ENDIAN (1 << 26)
#define MODEFAIL_GEN_EN (1 << 17)
#define MAN_START_COM (1 << 16)
@@ -87,7 +87,7 @@
#define R_LQSPI_CFG (0xa0 / 4)
#define R_LQSPI_CFG_RESET 0x03A002EB
-#define LQSPI_CFG_LQ_MODE (1 << 31)
+#define LQSPI_CFG_LQ_MODE (1U << 31)
#define LQSPI_CFG_TWO_MEM (1 << 30)
#define LQSPI_CFG_SEP_BUS (1 << 30)
#define LQSPI_CFG_U_PAGE (1 << 28)
diff --git a/include/exec/cpu-defs.h b/include/exec/cpu-defs.h
index 01cd8c7a2b..66a3d46938 100644
--- a/include/exec/cpu-defs.h
+++ b/include/exec/cpu-defs.h
@@ -59,6 +59,7 @@ typedef uint64_t target_ulong;
#define EXCP_HLT 0x10001 /* hlt instruction reached */
#define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */
#define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */
+#define EXCP_YIELD 0x10004 /* cpu wants to yield timeslice to another */
#define TB_JMP_CACHE_BITS 12
#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 49fef3fcbe..0a7edfe6cb 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -222,6 +222,10 @@ typedef struct CPUARMState {
uint64_t dbgbcr[16]; /* breakpoint control registers */
uint64_t dbgwvr[16]; /* watchpoint value registers */
uint64_t dbgwcr[16]; /* watchpoint control registers */
+ /* If the counter is enabled, this stores the last time the counter
+ * was reset. Otherwise it stores the counter value
+ */
+ uint32_t c15_ccnt;
} cp15;
struct {
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 90f85f1899..f65cbac1ee 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -13,6 +13,11 @@ static inline int get_phys_addr(CPUARMState *env, uint32_t address,
int access_type, int is_user,
hwaddr *phys_ptr, int *prot,
target_ulong *page_size);
+
+/* Definitions for the PMCCNTR and PMCR registers */
+#define PMCRD 0x8
+#define PMCRC 0x4
+#define PMCRE 0x1
#endif
static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
@@ -478,13 +483,84 @@ static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri)
return CP_ACCESS_OK;
}
+#ifndef CONFIG_USER_ONLY
static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
+ /* Don't computer the number of ticks in user mode */
+ uint32_t temp_ticks;
+
+ temp_ticks = qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) *
+ get_ticks_per_sec() / 1000000;
+
+ if (env->cp15.c9_pmcr & PMCRE) {
+ /* If the counter is enabled */
+ if (env->cp15.c9_pmcr & PMCRD) {
+ /* Increment once every 64 processor clock cycles */
+ env->cp15.c15_ccnt = (temp_ticks/64) - env->cp15.c15_ccnt;
+ } else {
+ env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt;
+ }
+ }
+
+ if (value & PMCRC) {
+ /* The counter has been reset */
+ env->cp15.c15_ccnt = 0;
+ }
+
/* only the DP, X, D and E bits are writable */
env->cp15.c9_pmcr &= ~0x39;
env->cp15.c9_pmcr |= (value & 0x39);
+
+ if (env->cp15.c9_pmcr & PMCRE) {
+ if (env->cp15.c9_pmcr & PMCRD) {
+ /* Increment once every 64 processor clock cycles */
+ temp_ticks /= 64;
+ }
+ env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt;
+ }
+}
+
+static uint64_t pmccntr_read(CPUARMState *env, const ARMCPRegInfo *ri)
+{
+ uint32_t total_ticks;
+
+ if (!(env->cp15.c9_pmcr & PMCRE)) {
+ /* Counter is disabled, do not change value */
+ return env->cp15.c15_ccnt;
+ }
+
+ total_ticks = qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) *
+ get_ticks_per_sec() / 1000000;
+
+ if (env->cp15.c9_pmcr & PMCRD) {
+ /* Increment once every 64 processor clock cycles */
+ total_ticks /= 64;
+ }
+ return total_ticks - env->cp15.c15_ccnt;
+}
+
+static void pmccntr_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ uint32_t total_ticks;
+
+ if (!(env->cp15.c9_pmcr & PMCRE)) {
+ /* Counter is disabled, set the absolute value */
+ env->cp15.c15_ccnt = value;
+ return;
+ }
+
+ total_ticks = qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) *
+ get_ticks_per_sec() / 1000000;
+
+ if (env->cp15.c9_pmcr & PMCRD) {
+ /* Increment once every 64 processor clock cycles */
+ total_ticks /= 64;
+ }
+ env->cp15.c15_ccnt = total_ticks - value;
}
+#endif
static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
@@ -604,10 +680,12 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
{ .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5,
.access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
.accessfn = pmreg_access },
- /* Unimplemented, RAZ/WI. */
+#ifndef CONFIG_USER_ONLY
{ .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0,
- .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
+ .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO,
+ .readfn = pmccntr_read, .writefn = pmccntr_write,
.accessfn = pmreg_access },
+#endif
{ .name = "PMXEVTYPER", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 1,
.access = PL0_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmxevtyper),
@@ -1873,8 +1951,10 @@ void register_cp_regs_for_features(ARMCPU *cpu)
}
if (arm_feature(env, ARM_FEATURE_V7)) {
/* v7 performance monitor control register: same implementor
- * field as main ID register, and we implement no event counters.
+ * field as main ID register, and we implement only the cycle
+ * count register.
*/
+#ifndef CONFIG_USER_ONLY
ARMCPRegInfo pmcr = {
.name = "PMCR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 0,
.access = PL0_RW, .resetvalue = cpu->midr & 0xff000000,
@@ -1882,12 +1962,13 @@ void register_cp_regs_for_features(ARMCPU *cpu)
.accessfn = pmreg_access, .writefn = pmcr_write,
.raw_writefn = raw_write,
};
+ define_one_arm_cp_reg(cpu, &pmcr);
+#endif
ARMCPRegInfo clidr = {
.name = "CLIDR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 1,
.access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->clidr
};
- define_one_arm_cp_reg(cpu, &pmcr);
define_one_arm_cp_reg(cpu, &clidr);
define_arm_cp_regs(cpu, v7_cp_reginfo);
} else {
@@ -2478,7 +2559,7 @@ uint32_t cpsr_read(CPUARMState *env)
(env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27)
| (env->thumb << 5) | ((env->condexec_bits & 3) << 25)
| ((env->condexec_bits & 0xfc) << 8)
- | (env->GE << 16) | env->daif;
+ | (env->GE << 16) | (env->daif & CPSR_AIF);
}
void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
diff --git a/target-arm/helper.h b/target-arm/helper.h
index 276f3a9149..8923f8ae71 100644
--- a/target-arm/helper.h
+++ b/target-arm/helper.h
@@ -50,6 +50,7 @@ DEF_HELPER_FLAGS_3(sel_flags, TCG_CALL_NO_RWG_SE,
i32, i32, i32, i32)
DEF_HELPER_2(exception, void, env, i32)
DEF_HELPER_1(wfi, void, env)
+DEF_HELPER_1(wfe, void, env)
DEF_HELPER_3(cpsr_write, void, env, i32, i32)
DEF_HELPER_1(cpsr_read, i32, env)
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
index 7d06d2f9a5..5851e041a0 100644
--- a/target-arm/op_helper.c
+++ b/target-arm/op_helper.c
@@ -225,6 +225,15 @@ void HELPER(wfi)(CPUARMState *env)
cpu_loop_exit(env);
}
+void HELPER(wfe)(CPUARMState *env)
+{
+ /* Don't actually halt the CPU, just yield back to top
+ * level loop
+ */
+ env->exception_index = EXCP_YIELD;
+ cpu_loop_exit(env);
+}
+
void HELPER(exception)(CPUARMState *env, uint32_t excp)
{
env->exception_index = excp;
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index 08ac6591b6..37e05e81f7 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -210,7 +210,7 @@ static inline void gen_goto_tb(DisasContext *s, int n, uint64_t dest)
if (use_goto_tb(s, n, dest)) {
tcg_gen_goto_tb(n);
gen_a64_set_pc_im(dest);
- tcg_gen_exit_tb((tcg_target_long)tb + n);
+ tcg_gen_exit_tb((intptr_t)tb + n);
s->is_jmp = DISAS_TB_JUMP;
} else {
gen_a64_set_pc_im(dest);
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 253d2a13eb..df259debcc 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -3939,6 +3939,9 @@ static void gen_nop_hint(DisasContext *s, int val)
s->is_jmp = DISAS_WFI;
break;
case 2: /* wfe */
+ gen_set_pc_im(s, s->pc);
+ s->is_jmp = DISAS_WFE;
+ break;
case 4: /* sev */
case 5: /* sevl */
/* TODO: Implement SEV, SEVL and WFE. May help SMP performance. */
@@ -10857,6 +10860,9 @@ static inline void gen_intermediate_code_internal(ARMCPU *cpu,
case DISAS_WFI:
gen_helper_wfi(cpu_env);
break;
+ case DISAS_WFE:
+ gen_helper_wfe(cpu_env);
+ break;
case DISAS_SWI:
gen_exception(EXCP_SWI);
break;
diff --git a/target-arm/translate.h b/target-arm/translate.h
index 67da6996c9..2f491f9ff6 100644
--- a/target-arm/translate.h
+++ b/target-arm/translate.h
@@ -44,6 +44,8 @@ extern TCGv_ptr cpu_env;
* emitting unreachable code at the end of the TB in the A64 decoder
*/
#define DISAS_EXC 6
+/* WFE */
+#define DISAS_WFE 7
#ifdef TARGET_AARCH64
void a64_translate_init(void);