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target-arm queue: 

* add MHU and dual-core support to Musca boards
  * refactor some VFP insns to be gated by ID registers
  * Revert "arm: Allow system registers for KVM guests to be changed by QEMU code"
  * Implement ARMv8.2-FHM extension
  * Advertise JSCVT via HWCAP for linux-user
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20190228-1' into staging

target-arm queue:
 * add MHU and dual-core support to Musca boards
 * refactor some VFP insns to be gated by ID registers
 * Revert "arm: Allow system registers for KVM guests to be changed by QEMU code"
 * Implement ARMv8.2-FHM extension
 * Advertise JSCVT via HWCAP for linux-user

# gpg: Signature made Thu 28 Feb 2019 11:06:55 GMT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20190228-1:
  linux-user: Enable HWCAP_ASIMDFHM, HWCAP_JSCVT
  target/arm: Enable ARMv8.2-FHM for -cpu max
  target/arm: Implement VFMAL and VFMSL for aarch32
  target/arm: Implement FMLAL and FMLSL for aarch64
  target/arm: Add helpers for FMLAL
  Revert "arm: Allow system registers for KVM guests to be changed by QEMU code"
  target/arm: Gate "miscellaneous FP" insns by ID register field
  target/arm: Use MVFR1 feature bits to gate A32/T32 FP16 instructions
  hw/arm/armsse: Unify init-svtor and cpuwait handling
  hw/arm/iotkit-sysctl: Implement CPUWAIT and INITSVTOR*
  hw/arm/iotkit-sysctl: Add SSE-200 registers
  hw/misc/iotkit-sysctl: Correct typo in INITSVTOR0 register name
  target/arm/arm-powerctl: Add new arm_set_cpu_on_and_reset()
  target/arm/cpu: Allow init-svtor property to be set after realize
  hw/arm/armsse: Wire up the MHUs
  hw/misc/armsse-mhu.c: Model the SSE-200 Message Handling Unit

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Peter Maydell 2019-02-28 17:35:42 +00:00
parent 21ee7686d7 1c9af3a9e0
commit 9403bccfe3
24 changed files with 1139 additions and 148 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MAINTAINERS
View File

@ -633,6 +633,8 @@ F: hw/misc/iotkit-sysinfo.c
F: include/hw/misc/iotkit-sysinfo.h
F: hw/misc/armsse-cpuid.c
F: include/hw/misc/armsse-cpuid.h
F: hw/misc/armsse-mhu.c
F: include/hw/misc/armsse-mhu.h
Musca
M: Peter Maydell <peter.maydell@linaro.org>

1
default-configs/arm-softmmu.mak
View File

@ -119,6 +119,7 @@ CONFIG_IOTKIT_SECCTL=y
CONFIG_IOTKIT_SYSCTL=y
CONFIG_IOTKIT_SYSINFO=y
CONFIG_ARMSSE_CPUID=y
CONFIG_ARMSSE_MHU=y
CONFIG_VERSATILE=y
CONFIG_VERSATILE_PCI=y

91
hw/arm/armsse.c
View File

@ -11,6 +11,7 @@
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "qemu/bitops.h"
#include "qapi/error.h"
#include "trace.h"
#include "hw/sysbus.h"
@ -29,6 +30,7 @@ struct ARMSSEInfo {
int sram_banks;
int num_cpus;
uint32_t sys_version;
uint32_t cpuwait_rst;
SysConfigFormat sys_config_format;
bool has_mhus;
bool has_ppus;
@ -43,6 +45,7 @@ static const ARMSSEInfo armsse_variants[] = {
.sram_banks = 1,
.num_cpus = 1,
.sys_version = 0x41743,
.cpuwait_rst = 0,
.sys_config_format = IoTKitFormat,
.has_mhus = false,
.has_ppus = false,
@ -55,6 +58,7 @@ static const ARMSSEInfo armsse_variants[] = {
.sram_banks = 4,
.num_cpus = 2,
.sys_version = 0x22041743,
.cpuwait_rst = 2,
.sys_config_format = SSE200Format,
.has_mhus = true,
.has_ppus = true,
@ -282,9 +286,9 @@ static void armsse_init(Object *obj)
sizeof(s->sysinfo), TYPE_IOTKIT_SYSINFO);
if (info->has_mhus) {
sysbus_init_child_obj(obj, "mhu0", &s->mhu[0], sizeof(s->mhu[0]),
TYPE_UNIMPLEMENTED_DEVICE);
TYPE_ARMSSE_MHU);
sysbus_init_child_obj(obj, "mhu1", &s->mhu[1], sizeof(s->mhu[1]),
TYPE_UNIMPLEMENTED_DEVICE);
TYPE_ARMSSE_MHU);
}
if (info->has_ppus) {
for (i = 0; i < info->num_cpus; i++) {
@ -495,30 +499,33 @@ static void armsse_realize(DeviceState *dev, Error **errp)
qdev_prop_set_uint32(cpudev, "num-irq", s->exp_numirq + 32);
/*
* In real hardware the initial Secure VTOR is set from the INITSVTOR0
* register in the IoT Kit System Control Register block, and the
* initial value of that is in turn specifiable by the FPGA that
* instantiates the IoT Kit. In QEMU we don't implement this wrinkle,
* and simply set the CPU's init-svtor to the IoT Kit default value.
* In SSE-200 the situation is similar, except that the default value
* is a reset-time signal input. Typically a board using the SSE-200
* will have a system control processor whose boot firmware initializes
* the INITSVTOR* registers before powering up the CPUs in any case,
* so the hardware's default value doesn't matter. QEMU doesn't emulate
* In real hardware the initial Secure VTOR is set from the INITSVTOR*
* registers in the IoT Kit System Control Register block. In QEMU
* we set the initial value here, and also the reset value of the
* sysctl register, from this object's QOM init-svtor property.
* If the guest changes the INITSVTOR* registers at runtime then the
* code in iotkit-sysctl.c will update the CPU init-svtor property
* (which will then take effect on the next CPU warm-reset).
*
* Note that typically a board using the SSE-200 will have a system
* control processor whose boot firmware initializes the INITSVTOR*
* registers before powering up the CPUs. QEMU doesn't emulate
* the control processor, so instead we behave in the way that the
* firmware does. The initial value is configurable by the board code
* to match whatever its firmware does.
* firmware does: the initial value should be set by the board code
* (using the init-svtor property on the ARMSSE object) to match
* whatever its firmware does.
*/
qdev_prop_set_uint32(cpudev, "init-svtor", s->init_svtor);
/*
* Start all CPUs except CPU0 powered down. In real hardware it is
* a configurable property of the SSE-200 which CPUs start powered up
* (via the CPUWAIT0_RST and CPUWAIT1_RST parameters), but since all
* the boards we care about start CPU0 and leave CPU1 powered off,
* we hard-code that for now. We can add QOM properties for this
* CPUs start powered down if the corresponding bit in the CPUWAIT
* register is 1. In real hardware the CPUWAIT register reset value is
* a configurable property of the SSE-200 (via the CPUWAIT0_RST and
* CPUWAIT1_RST parameters), but since all the boards we care about
* start CPU0 and leave CPU1 powered off, we hard-code that in
* info->cpuwait_rst for now. We can add QOM properties for this
* later if necessary.
*/
if (i > 0) {
if (extract32(info->cpuwait_rst, i, 1)) {
object_property_set_bool(cpuobj, true, "start-powered-off", &err);
if (err) {
error_propagate(errp, err);
@ -766,22 +773,28 @@ static void armsse_realize(DeviceState *dev, Error **errp)
}
if (info->has_mhus) {
for (i = 0; i < ARRAY_SIZE(s->mhu); i++) {
char *name;
char *port;
/*
* An SSE-200 with only one CPU should have only one MHU created,
* with the region where the second MHU usually is being RAZ/WI.
* We don't implement that SSE-200 config; if we want to support
* it then this code needs to be enhanced to handle creating the
* RAZ/WI region instead of the second MHU.
*/
assert(info->num_cpus == ARRAY_SIZE(s->mhu));
for (i = 0; i < ARRAY_SIZE(s->mhu); i++) {
char *port;
int cpunum;
SysBusDevice *mhu_sbd = SYS_BUS_DEVICE(&s->mhu[i]);
name = g_strdup_printf("MHU%d", i);
qdev_prop_set_string(DEVICE(&s->mhu[i]), "name", name);
qdev_prop_set_uint64(DEVICE(&s->mhu[i]), "size", 0x1000);
object_property_set_bool(OBJECT(&s->mhu[i]), true,
"realized", &err);
g_free(name);
if (err) {
error_propagate(errp, err);
return;
}
port = g_strdup_printf("port[%d]", i + 3);
mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mhu[i]), 0);
mr = sysbus_mmio_get_region(mhu_sbd, 0);
object_property_set_link(OBJECT(&s->apb_ppc0), OBJECT(mr),
port, &err);
g_free(port);
@ -789,6 +802,20 @@ static void armsse_realize(DeviceState *dev, Error **errp)
error_propagate(errp, err);
return;
}
/*
* Each MHU has an irq line for each CPU:
* MHU 0 irq line 0 -> CPU 0 IRQ 6
* MHU 0 irq line 1 -> CPU 1 IRQ 6
* MHU 1 irq line 0 -> CPU 0 IRQ 7
* MHU 1 irq line 1 -> CPU 1 IRQ 7
*/
for (cpunum = 0; cpunum < info->num_cpus; cpunum++) {
DeviceState *cpudev = DEVICE(&s->armv7m[cpunum]);
sysbus_connect_irq(mhu_sbd, cpunum,
qdev_get_gpio_in(cpudev, 6 + i));
}
}
}
@ -977,6 +1004,14 @@ static void armsse_realize(DeviceState *dev, Error **errp)
/* System information registers */
sysbus_mmio_map(SYS_BUS_DEVICE(&s->sysinfo), 0, 0x40020000);
/* System control registers */
object_property_set_int(OBJECT(&s->sysctl), info->sys_version,
"SYS_VERSION", &err);
object_property_set_int(OBJECT(&s->sysctl), info->cpuwait_rst,
"CPUWAIT_RST", &err);
object_property_set_int(OBJECT(&s->sysctl), s->init_svtor,
"INITSVTOR0_RST", &err);
object_property_set_int(OBJECT(&s->sysctl), s->init_svtor,
"INITSVTOR1_RST", &err);
object_property_set_bool(OBJECT(&s->sysctl), true, "realized", &err);
if (err) {
error_propagate(errp, err);

1
hw/misc/Makefile.objs
View File

@ -70,6 +70,7 @@ obj-$(CONFIG_IOTKIT_SECCTL) += iotkit-secctl.o
obj-$(CONFIG_IOTKIT_SYSCTL) += iotkit-sysctl.o
obj-$(CONFIG_IOTKIT_SYSINFO) += iotkit-sysinfo.o
obj-$(CONFIG_ARMSSE_CPUID) += armsse-cpuid.o
obj-$(CONFIG_ARMSSE_MHU) += armsse-mhu.o
obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_AUX) += auxbus.o

198
hw/misc/armsse-mhu.c Normal file
View File

@ -0,0 +1,198 @@
/*
* ARM SSE-200 Message Handling Unit (MHU)
*
* Copyright (c) 2019 Linaro Limited
* Written by Peter Maydell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or
* (at your option) any later version.
*/
/*
* This is a model of the Message Handling Unit (MHU) which is part of the
* Arm SSE-200 and documented in
* http://infocenter.arm.com/help/topic/com.arm.doc.101104_0100_00_en/corelink_sse200_subsystem_for_embedded_technical_reference_manual_101104_0100_00_en.pdf
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "trace.h"
#include "qapi/error.h"
#include "sysemu/sysemu.h"
#include "hw/sysbus.h"
#include "hw/registerfields.h"
#include "hw/misc/armsse-mhu.h"
REG32(CPU0INTR_STAT, 0x0)
REG32(CPU0INTR_SET, 0x4)
REG32(CPU0INTR_CLR, 0x8)
REG32(CPU1INTR_STAT, 0x10)
REG32(CPU1INTR_SET, 0x14)
REG32(CPU1INTR_CLR, 0x18)
REG32(PID4, 0xfd0)
REG32(PID5, 0xfd4)
REG32(PID6, 0xfd8)
REG32(PID7, 0xfdc)
REG32(PID0, 0xfe0)
REG32(PID1, 0xfe4)
REG32(PID2, 0xfe8)
REG32(PID3, 0xfec)
REG32(CID0, 0xff0)
REG32(CID1, 0xff4)
REG32(CID2, 0xff8)
REG32(CID3, 0xffc)
/* Valid bits in the interrupt registers. If any are set the IRQ is raised */
#define INTR_MASK 0xf
/* PID/CID values */
static const int armsse_mhu_id[] = {
0x04, 0x00, 0x00, 0x00, /* PID4..PID7 */
0x56, 0xb8, 0x0b, 0x00, /* PID0..PID3 */
0x0d, 0xf0, 0x05, 0xb1, /* CID0..CID3 */
};
static void armsse_mhu_update(ARMSSEMHU *s)
{
qemu_set_irq(s->cpu0irq, s->cpu0intr != 0);
qemu_set_irq(s->cpu1irq, s->cpu1intr != 0);
}
static uint64_t armsse_mhu_read(void *opaque, hwaddr offset, unsigned size)
{
ARMSSEMHU *s = ARMSSE_MHU(opaque);
uint64_t r;
switch (offset) {
case A_CPU0INTR_STAT:
r = s->cpu0intr;
break;
case A_CPU1INTR_STAT:
r = s->cpu1intr;
break;
case A_PID4 ... A_CID3:
r = armsse_mhu_id[(offset - A_PID4) / 4];
break;
case A_CPU0INTR_SET:
case A_CPU0INTR_CLR:
case A_CPU1INTR_SET:
case A_CPU1INTR_CLR:
qemu_log_mask(LOG_GUEST_ERROR,
"SSE MHU: read of write-only register at offset 0x%x\n",
(int)offset);
r = 0;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"SSE MHU read: bad offset 0x%x\n", (int)offset);
r = 0;
break;
}
trace_armsse_mhu_read(offset, r, size);
return r;
}
static void armsse_mhu_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
ARMSSEMHU *s = ARMSSE_MHU(opaque);
trace_armsse_mhu_write(offset, value, size);
switch (offset) {
case A_CPU0INTR_SET:
s->cpu0intr |= (value & INTR_MASK);
break;
case A_CPU0INTR_CLR:
s->cpu0intr &= ~(value & INTR_MASK);
break;
case A_CPU1INTR_SET:
s->cpu1intr |= (value & INTR_MASK);
break;
case A_CPU1INTR_CLR:
s->cpu1intr &= ~(value & INTR_MASK);
break;
case A_CPU0INTR_STAT:
case A_CPU1INTR_STAT:
case A_PID4 ... A_CID3:
qemu_log_mask(LOG_GUEST_ERROR,
"SSE MHU: write to read-only register at offset 0x%x\n",
(int)offset);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"SSE MHU write: bad offset 0x%x\n", (int)offset);
break;
}
armsse_mhu_update(s);
}
static const MemoryRegionOps armsse_mhu_ops = {
.read = armsse_mhu_read,
.write = armsse_mhu_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
};
static void armsse_mhu_reset(DeviceState *dev)
{
ARMSSEMHU *s = ARMSSE_MHU(dev);
s->cpu0intr = 0;
s->cpu1intr = 0;
}
static const VMStateDescription armsse_mhu_vmstate = {
.name = "armsse-mhu",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(cpu0intr, ARMSSEMHU),
VMSTATE_UINT32(cpu1intr, ARMSSEMHU),
VMSTATE_END_OF_LIST()
},
};
static void armsse_mhu_init(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
ARMSSEMHU *s = ARMSSE_MHU(obj);
memory_region_init_io(&s->iomem, obj, &armsse_mhu_ops,
s, "armsse-mhu", 0x1000);
sysbus_init_mmio(sbd, &s->iomem);
sysbus_init_irq(sbd, &s->cpu0irq);
sysbus_init_irq(sbd, &s->cpu1irq);
}
static void armsse_mhu_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->reset = armsse_mhu_reset;
dc->vmsd = &armsse_mhu_vmstate;
}
static const TypeInfo armsse_mhu_info = {
.name = TYPE_ARMSSE_MHU,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(ARMSSEMHU),
.instance_init = armsse_mhu_init,
.class_init = armsse_mhu_class_init,
};
static void armsse_mhu_register_types(void)
{
type_register_static(&armsse_mhu_info);
}
type_init(armsse_mhu_register_types);

294
hw/misc/iotkit-sysctl.c
View File

@ -17,6 +17,7 @@
*/
#include "qemu/osdep.h"
#include "qemu/bitops.h"
#include "qemu/log.h"
#include "trace.h"
#include "qapi/error.h"
@ -24,19 +25,32 @@
#include "hw/sysbus.h"
#include "hw/registerfields.h"
#include "hw/misc/iotkit-sysctl.h"
#include "target/arm/arm-powerctl.h"
#include "target/arm/cpu.h"
REG32(SECDBGSTAT, 0x0)
REG32(SECDBGSET, 0x4)
REG32(SECDBGCLR, 0x8)
REG32(SCSECCTRL, 0xc)
REG32(FCLK_DIV, 0x10)
REG32(SYSCLK_DIV, 0x14)
REG32(CLOCK_FORCE, 0x18)
REG32(RESET_SYNDROME, 0x100)
REG32(RESET_MASK, 0x104)
REG32(SWRESET, 0x108)
FIELD(SWRESET, SWRESETREQ, 9, 1)
REG32(GRETREG, 0x10c)
REG32(INITSVRTOR0, 0x110)
REG32(INITSVTOR0, 0x110)
REG32(INITSVTOR1, 0x114)
REG32(CPUWAIT, 0x118)
REG32(BUSWAIT, 0x11c)
REG32(NMI_ENABLE, 0x11c) /* BUSWAIT in IoTKit */
REG32(WICCTRL, 0x120)
REG32(EWCTRL, 0x124)
REG32(PDCM_PD_SYS_SENSE, 0x200)
REG32(PDCM_PD_SRAM0_SENSE, 0x20c)
REG32(PDCM_PD_SRAM1_SENSE, 0x210)
REG32(PDCM_PD_SRAM2_SENSE, 0x214)
REG32(PDCM_PD_SRAM3_SENSE, 0x218)
REG32(PID4, 0xfd0)
REG32(PID5, 0xfd4)
REG32(PID6, 0xfd8)
@ -57,6 +71,21 @@ static const int sysctl_id[] = {
0x0d, 0xf0, 0x05, 0xb1, /* CID0..CID3 */
};
/*
* Set the initial secure vector table offset address for the core.
* This will take effect when the CPU next resets.
*/
static void set_init_vtor(uint64_t cpuid, uint32_t vtor)
{
Object *cpuobj = OBJECT(arm_get_cpu_by_id(cpuid));
if (cpuobj) {
if (object_property_find(cpuobj, "init-svtor", NULL)) {
object_property_set_uint(cpuobj, vtor, "init-svtor", &error_abort);
}
}
}
static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
unsigned size)
{
@ -67,6 +96,30 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
case A_SECDBGSTAT:
r = s->secure_debug;
break;
case A_SCSECCTRL:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->scsecctrl;
break;
case A_FCLK_DIV:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->fclk_div;
break;
case A_SYSCLK_DIV:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->sysclk_div;
break;
case A_CLOCK_FORCE:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->clock_force;
break;
case A_RESET_SYNDROME:
r = s->reset_syndrome;
break;
@ -76,19 +129,65 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
case A_GRETREG:
r = s->gretreg;
break;
case A_INITSVRTOR0:
r = s->initsvrtor0;
case A_INITSVTOR0:
r = s->initsvtor0;
break;
case A_INITSVTOR1:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->initsvtor1;
break;
case A_CPUWAIT:
r = s->cpuwait;
break;
case A_BUSWAIT:
/* In IoTKit BUSWAIT is reserved, R/O, zero */
r = 0;
case A_NMI_ENABLE:
/* In IoTKit this is named BUSWAIT but is marked reserved, R/O, zero */
if (!s->is_sse200) {
r = 0;
break;
}
r = s->nmi_enable;
break;
case A_WICCTRL:
r = s->wicctrl;
break;
case A_EWCTRL:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->ewctrl;
break;
case A_PDCM_PD_SYS_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->pdcm_pd_sys_sense;
break;
case A_PDCM_PD_SRAM0_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->pdcm_pd_sram0_sense;
break;
case A_PDCM_PD_SRAM1_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->pdcm_pd_sram1_sense;
break;
case A_PDCM_PD_SRAM2_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->pdcm_pd_sram2_sense;
break;
case A_PDCM_PD_SRAM3_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
r = s->pdcm_pd_sram3_sense;
break;
case A_PID4 ... A_CID3:
r = sysctl_id[(offset - A_PID4) / 4];
break;
@ -101,6 +200,7 @@ static uint64_t iotkit_sysctl_read(void *opaque, hwaddr offset,
r = 0;
break;
default:
bad_offset:
qemu_log_mask(LOG_GUEST_ERROR,
"IoTKit SysCtl read: bad offset %x\n", (int)offset);
r = 0;
@ -145,12 +245,19 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
*/
s->gretreg = value;
break;
case A_INITSVRTOR0:
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl INITSVRTOR0 unimplemented\n");
s->initsvrtor0 = value;
case A_INITSVTOR0:
s->initsvtor0 = value;
set_init_vtor(0, s->initsvtor0);
break;
case A_CPUWAIT:
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl CPUWAIT unimplemented\n");
if ((s->cpuwait & 1) && !(value & 1)) {
/* Powering up CPU 0 */
arm_set_cpu_on_and_reset(0);
}
if ((s->cpuwait & 2) && !(value & 2)) {
/* Powering up CPU 1 */
arm_set_cpu_on_and_reset(1);
}
s->cpuwait = value;
break;
case A_WICCTRL:
@ -172,14 +279,105 @@ static void iotkit_sysctl_write(void *opaque, hwaddr offset,
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
break;
case A_BUSWAIT: /* In IoTKit BUSWAIT is reserved, R/O, zero */
case A_SCSECCTRL:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl SCSECCTRL unimplemented\n");
s->scsecctrl = value;
break;
case A_FCLK_DIV:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl FCLK_DIV unimplemented\n");
s->fclk_div = value;
break;
case A_SYSCLK_DIV:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl SYSCLK_DIV unimplemented\n");
s->sysclk_div = value;
break;
case A_CLOCK_FORCE:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl CLOCK_FORCE unimplemented\n");
s->clock_force = value;
break;
case A_INITSVTOR1:
if (!s->is_sse200) {
goto bad_offset;
}
s->initsvtor1 = value;
set_init_vtor(1, s->initsvtor1);
break;
case A_EWCTRL:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl EWCTRL unimplemented\n");
s->ewctrl = value;
break;
case A_PDCM_PD_SYS_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP,
"IoTKit SysCtl PDCM_PD_SYS_SENSE unimplemented\n");
s->pdcm_pd_sys_sense = value;
break;
case A_PDCM_PD_SRAM0_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP,
"IoTKit SysCtl PDCM_PD_SRAM0_SENSE unimplemented\n");
s->pdcm_pd_sram0_sense = value;
break;
case A_PDCM_PD_SRAM1_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP,
"IoTKit SysCtl PDCM_PD_SRAM1_SENSE unimplemented\n");
s->pdcm_pd_sram1_sense = value;
break;
case A_PDCM_PD_SRAM2_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP,
"IoTKit SysCtl PDCM_PD_SRAM2_SENSE unimplemented\n");
s->pdcm_pd_sram2_sense = value;
break;
case A_PDCM_PD_SRAM3_SENSE:
if (!s->is_sse200) {
goto bad_offset;
}
qemu_log_mask(LOG_UNIMP,
"IoTKit SysCtl PDCM_PD_SRAM3_SENSE unimplemented\n");
s->pdcm_pd_sram3_sense = value;
break;
case A_NMI_ENABLE:
/* In IoTKit this is BUSWAIT: reserved, R/O, zero */
if (!s->is_sse200) {
goto ro_offset;
}
qemu_log_mask(LOG_UNIMP, "IoTKit SysCtl NMI_ENABLE unimplemented\n");
s->nmi_enable = value;
break;
case A_SECDBGSTAT:
case A_PID4 ... A_CID3:
ro_offset:
qemu_log_mask(LOG_GUEST_ERROR,
"IoTKit SysCtl write: write of RO offset %x\n",
(int)offset);
break;
default:
bad_offset:
qemu_log_mask(LOG_GUEST_ERROR,
"IoTKit SysCtl write: bad offset %x\n", (int)offset);
break;
@ -206,9 +404,21 @@ static void iotkit_sysctl_reset(DeviceState *dev)
s->reset_syndrome = 1;
s->reset_mask = 0;
s->gretreg = 0;
s->initsvrtor0 = 0x10000000;
s->cpuwait = 0;
s->initsvtor0 = s->initsvtor0_rst;
s->initsvtor1 = s->initsvtor1_rst;
s->cpuwait = s->cpuwait_rst;
s->wicctrl = 0;
s->scsecctrl = 0;
s->fclk_div = 0;
s->sysclk_div = 0;
s->clock_force = 0;
s->nmi_enable = 0;
s->ewctrl = 0;
s->pdcm_pd_sys_sense = 0x7f;
s->pdcm_pd_sram0_sense = 0;
s->pdcm_pd_sram1_sense = 0;
s->pdcm_pd_sram2_sense = 0;
s->pdcm_pd_sram3_sense = 0;
}
static void iotkit_sysctl_init(Object *obj)
@ -221,6 +431,44 @@ static void iotkit_sysctl_init(Object *obj)
sysbus_init_mmio(sbd, &s->iomem);
}
static void iotkit_sysctl_realize(DeviceState *dev, Error **errp)
{
IoTKitSysCtl *s = IOTKIT_SYSCTL(dev);
/* The top 4 bits of the SYS_VERSION register tell us if we're an SSE-200 */
if (extract32(s->sys_version, 28, 4) == 2) {
s->is_sse200 = true;
}
}
static bool sse200_needed(void *opaque)
{
IoTKitSysCtl *s = IOTKIT_SYSCTL(opaque);
return s->is_sse200;
}
static const VMStateDescription iotkit_sysctl_sse200_vmstate = {
.name = "iotkit-sysctl/sse-200",
.version_id = 1,
.minimum_version_id = 1,
.needed = sse200_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT32(scsecctrl, IoTKitSysCtl),
VMSTATE_UINT32(fclk_div, IoTKitSysCtl),
VMSTATE_UINT32(sysclk_div, IoTKitSysCtl),
VMSTATE_UINT32(clock_force, IoTKitSysCtl),
VMSTATE_UINT32(initsvtor1, IoTKitSysCtl),
VMSTATE_UINT32(nmi_enable, IoTKitSysCtl),
VMSTATE_UINT32(pdcm_pd_sys_sense, IoTKitSysCtl),
VMSTATE_UINT32(pdcm_pd_sram0_sense, IoTKitSysCtl),
VMSTATE_UINT32(pdcm_pd_sram1_sense, IoTKitSysCtl),
VMSTATE_UINT32(pdcm_pd_sram2_sense, IoTKitSysCtl),
VMSTATE_UINT32(pdcm_pd_sram3_sense, IoTKitSysCtl),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription iotkit_sysctl_vmstate = {
.name = "iotkit-sysctl",
.version_id = 1,
@ -230,19 +478,35 @@ static const VMStateDescription iotkit_sysctl_vmstate = {
VMSTATE_UINT32(reset_syndrome, IoTKitSysCtl),
VMSTATE_UINT32(reset_mask, IoTKitSysCtl),
VMSTATE_UINT32(gretreg, IoTKitSysCtl),
VMSTATE_UINT32(initsvrtor0, IoTKitSysCtl),
VMSTATE_UINT32(initsvtor0, IoTKitSysCtl),
VMSTATE_UINT32(cpuwait, IoTKitSysCtl),
VMSTATE_UINT32(wicctrl, IoTKitSysCtl),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&iotkit_sysctl_sse200_vmstate,
NULL
}
};
static Property iotkit_sysctl_props[] = {
DEFINE_PROP_UINT32("SYS_VERSION", IoTKitSysCtl, sys_version, 0),
DEFINE_PROP_UINT32("CPUWAIT_RST", IoTKitSysCtl, cpuwait_rst, 0),
DEFINE_PROP_UINT32("INITSVTOR0_RST", IoTKitSysCtl, initsvtor0_rst,
0x10000000),
DEFINE_PROP_UINT32("INITSVTOR1_RST", IoTKitSysCtl, initsvtor1_rst,
0x10000000),
DEFINE_PROP_END_OF_LIST()
};
static void iotkit_sysctl_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &iotkit_sysctl_vmstate;
dc->reset = iotkit_sysctl_reset;
dc->props = iotkit_sysctl_props;
dc->realize = iotkit_sysctl_realize;
}
static const TypeInfo iotkit_sysctl_info = {

4
hw/misc/trace-events
View File

@ -136,3 +136,7 @@ iotkit_sysctl_reset(void) "IoTKit SysCtl: reset"
# hw/misc/armsse-cpuid.c
armsse_cpuid_read(uint64_t offset, uint64_t data, unsigned size) "SSE-200 CPU_IDENTITY read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
armsse_cpuid_write(uint64_t offset, uint64_t data, unsigned size) "SSE-200 CPU_IDENTITY write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
# hw/misc/armsse-mhu.c
armsse_mhu_read(uint64_t offset, uint64_t data, unsigned size) "SSE-200 MHU read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
armsse_mhu_write(uint64_t offset, uint64_t data, unsigned size) "SSE-200 MHU write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"

3
include/hw/arm/armsse.h
View File

@ -95,6 +95,7 @@
#include "hw/misc/iotkit-sysctl.h"
#include "hw/misc/iotkit-sysinfo.h"
#include "hw/misc/armsse-cpuid.h"
#include "hw/misc/armsse-mhu.h"
#include "hw/misc/unimp.h"
#include "hw/or-irq.h"
#include "hw/core/split-irq.h"
@ -166,7 +167,7 @@ typedef struct ARMSSE {
IoTKitSysCtl sysctl;
IoTKitSysCtl sysinfo;
UnimplementedDeviceState mhu[2];
ARMSSEMHU mhu[2];
UnimplementedDeviceState ppu[NUM_PPUS];
UnimplementedDeviceState cachectrl[SSE_MAX_CPUS];
UnimplementedDeviceState cpusecctrl[SSE_MAX_CPUS];

44
include/hw/misc/armsse-mhu.h Normal file
View File

@ -0,0 +1,44 @@
/*
* ARM SSE-200 Message Handling Unit (MHU)
*
* Copyright (c) 2019 Linaro Limited
* Written by Peter Maydell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or
* (at your option) any later version.
*/
/*
* This is a model of the Message Handling Unit (MHU) which is part of the
* Arm SSE-200 and documented in
* http://infocenter.arm.com/help/topic/com.arm.doc.101104_0100_00_en/corelink_sse200_subsystem_for_embedded_technical_reference_manual_101104_0100_00_en.pdf
*
* QEMU interface:
* + sysbus MMIO region 0: the system information register bank
* + sysbus IRQ 0: interrupt for CPU 0
* + sysbus IRQ 1: interrupt for CPU 1
*/
#ifndef HW_MISC_SSE_MHU_H
#define HW_MISC_SSE_MHU_H
#include "hw/sysbus.h"
#define TYPE_ARMSSE_MHU "armsse-mhu"
#define ARMSSE_MHU(obj) OBJECT_CHECK(ARMSSEMHU, (obj), TYPE_ARMSSE_MHU)
typedef struct ARMSSEMHU {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
qemu_irq cpu0irq;
qemu_irq cpu1irq;
uint32_t cpu0intr;
uint32_t cpu1intr;
} ARMSSEMHU;
#endif

25
include/hw/misc/iotkit-sysctl.h
View File

@ -17,6 +17,9 @@
* "system control register" blocks.
*
* QEMU interface:
* + QOM property "SYS_VERSION": value of the SYS_VERSION register of the
* system information block of the SSE
* (used to identify whether to provide SSE-200-only registers)
* + sysbus MMIO region 0: the system information register bank
* + sysbus MMIO region 1: the system control register bank
*/
@ -41,9 +44,29 @@ typedef struct IoTKitSysCtl {
uint32_t reset_syndrome;
uint32_t reset_mask;
uint32_t gretreg;
uint32_t initsvrtor0;
uint32_t initsvtor0;
uint32_t cpuwait;
uint32_t wicctrl;
uint32_t scsecctrl;
uint32_t fclk_div;
uint32_t sysclk_div;
uint32_t clock_force;
uint32_t initsvtor1;
uint32_t nmi_enable;
uint32_t ewctrl;
uint32_t pdcm_pd_sys_sense;
uint32_t pdcm_pd_sram0_sense;
uint32_t pdcm_pd_sram1_sense;
uint32_t pdcm_pd_sram2_sense;
uint32_t pdcm_pd_sram3_sense;
/* Properties */
uint32_t sys_version;
uint32_t cpuwait_rst;
uint32_t initsvtor0_rst;
uint32_t initsvtor1_rst;
bool is_sse200;
} IoTKitSysCtl;
#endif

2
linux-user/elfload.c
View File

@ -602,6 +602,8 @@ static uint32_t get_elf_hwcap(void)
GET_FEATURE_ID(aa64_fcma, ARM_HWCAP_A64_FCMA);
GET_FEATURE_ID(aa64_sve, ARM_HWCAP_A64_SVE);
GET_FEATURE_ID(aa64_pauth, ARM_HWCAP_A64_PACA | ARM_HWCAP_A64_PACG);
GET_FEATURE_ID(aa64_fhm, ARM_HWCAP_A64_ASIMDFHM);
GET_FEATURE_ID(aa64_jscvt, ARM_HWCAP_A64_JSCVT);
#undef GET_FEATURE_ID

56
target/arm/arm-powerctl.c
View File

@ -228,6 +228,62 @@ int arm_set_cpu_on(uint64_t cpuid, uint64_t entry, uint64_t context_id,
return QEMU_ARM_POWERCTL_RET_SUCCESS;
}
static void arm_set_cpu_on_and_reset_async_work(CPUState *target_cpu_state,
run_on_cpu_data data)
{
ARMCPU *target_cpu = ARM_CPU(target_cpu_state);
/* Initialize the cpu we are turning on */
cpu_reset(target_cpu_state);
target_cpu_state->halted = 0;
/* Finally set the power status */
assert(qemu_mutex_iothread_locked());
target_cpu->power_state = PSCI_ON;
}
int arm_set_cpu_on_and_reset(uint64_t cpuid)
{
CPUState *target_cpu_state;
ARMCPU *target_cpu;
assert(qemu_mutex_iothread_locked());
/* Retrieve the cpu we are powering up */
target_cpu_state = arm_get_cpu_by_id(cpuid);
if (!target_cpu_state) {
/* The cpu was not found */
return QEMU_ARM_POWERCTL_INVALID_PARAM;
}
target_cpu = ARM_CPU(target_cpu_state);
if (target_cpu->power_state == PSCI_ON) {
qemu_log_mask(LOG_GUEST_ERROR,
"[ARM]%s: CPU %" PRId64 " is already on\n",
__func__, cpuid);
return QEMU_ARM_POWERCTL_ALREADY_ON;
}
/*
* If another CPU has powered the target on we are in the state
* ON_PENDING and additional attempts to power on the CPU should
* fail (see 6.6 Implementation CPU_ON/CPU_OFF races in the PSCI
* spec)
*/
if (target_cpu->power_state == PSCI_ON_PENDING) {
qemu_log_mask(LOG_GUEST_ERROR,
"[ARM]%s: CPU %" PRId64 " is already powering on\n",
__func__, cpuid);
return QEMU_ARM_POWERCTL_ON_PENDING;
}
async_run_on_cpu(target_cpu_state, arm_set_cpu_on_and_reset_async_work,
RUN_ON_CPU_NULL);
/* We are good to go */
return QEMU_ARM_POWERCTL_RET_SUCCESS;
}
static void arm_set_cpu_off_async_work(CPUState *target_cpu_state,
run_on_cpu_data data)
{

16
target/arm/arm-powerctl.h
View File

@ -74,4 +74,20 @@ int arm_set_cpu_off(uint64_t cpuid);
*/
int arm_reset_cpu(uint64_t cpuid);
/*
* arm_set_cpu_on_and_reset:
* @cpuid: the id of the CPU we want to star
*
* Start the cpu designated by @cpuid and put it through its normal
* CPU reset process. The CPU will start in the way it is architected
* to start after a power-on reset.
*
* Returns: QEMU_ARM_POWERCTL_RET_SUCCESS on success.
* QEMU_ARM_POWERCTL_INVALID_PARAM if there is no CPU with that ID.
* QEMU_ARM_POWERCTL_ALREADY_ON if the CPU is already on.
* QEMU_ARM_POWERCTL_ON_PENDING if the CPU is already partway through
* powering on.
*/
int arm_set_cpu_on_and_reset(uint64_t cpuid);
#endif

32
target/arm/cpu.c
View File

@ -22,6 +22,7 @@
#include "target/arm/idau.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "cpu.h"
#include "internals.h"
#include "qemu-common.h"
@ -771,9 +772,21 @@ static Property arm_cpu_pmsav7_dregion_property =
pmsav7_dregion,
qdev_prop_uint32, uint32_t);
/* M profile: initial value of the Secure VTOR */
static Property arm_cpu_initsvtor_property =
DEFINE_PROP_UINT32("init-svtor", ARMCPU, init_svtor, 0);
static void arm_get_init_svtor(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
visit_type_uint32(v, name, &cpu->init_svtor, errp);
}
static void arm_set_init_svtor(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ARMCPU *cpu = ARM_CPU(obj);
visit_type_uint32(v, name, &cpu->init_svtor, errp);
}
void arm_cpu_post_init(Object *obj)
{
@ -845,8 +858,14 @@ void arm_cpu_post_init(Object *obj)
qdev_prop_allow_set_link_before_realize,
OBJ_PROP_LINK_STRONG,
&error_abort);
qdev_property_add_static(DEVICE(obj), &arm_cpu_initsvtor_property,
&error_abort);
/*
* M profile: initial value of the Secure VTOR. We can't just use
* a simple DEFINE_PROP_UINT32 for this because we want to permit
* the property to be set after realize.
*/
object_property_add(obj, "init-svtor", "uint32",
arm_get_init_svtor, arm_set_init_svtor,
NULL, NULL, &error_abort);
}
qdev_property_add_static(DEVICE(obj), &arm_cpu_cfgend_property,
@ -995,7 +1014,6 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
}
if (arm_feature(env, ARM_FEATURE_VFP4)) {
set_feature(env, ARM_FEATURE_VFP3);
set_feature(env, ARM_FEATURE_VFP_FP16);
}
if (arm_feature(env, ARM_FEATURE_VFP3)) {
set_feature(env, ARM_FEATURE_VFP);
@ -1656,7 +1674,6 @@ static void cortex_a9_initfn(Object *obj)
cpu->dtb_compatible = "arm,cortex-a9";
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_VFP3);
set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
set_feature(&cpu->env, ARM_FEATURE_NEON);
set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
set_feature(&cpu->env, ARM_FEATURE_EL3);
@ -2003,6 +2020,7 @@ static void arm_max_initfn(Object *obj)
t = cpu->isar.id_isar6;
t = FIELD_DP32(t, ID_ISAR6, JSCVT, 1);
t = FIELD_DP32(t, ID_ISAR6, DP, 1);
t = FIELD_DP32(t, ID_ISAR6, FHM, 1);
cpu->isar.id_isar6 = t;
t = cpu->id_mmfr4;

76
target/arm/cpu.h
View File

@ -1730,6 +1730,27 @@ FIELD(ID_DFR0, MPROFDBG, 20, 4)
FIELD(ID_DFR0, PERFMON, 24, 4)
FIELD(ID_DFR0, TRACEFILT, 28, 4)
FIELD(MVFR0, SIMDREG, 0, 4)
FIELD(MVFR0, FPSP, 4, 4)
FIELD(MVFR0, FPDP, 8, 4)
FIELD(MVFR0, FPTRAP, 12, 4)
FIELD(MVFR0, FPDIVIDE, 16, 4)
FIELD(MVFR0, FPSQRT, 20, 4)
FIELD(MVFR0, FPSHVEC, 24, 4)
FIELD(MVFR0, FPROUND, 28, 4)
FIELD(MVFR1, FPFTZ, 0, 4)
FIELD(MVFR1, FPDNAN, 4, 4)
FIELD(MVFR1, SIMDLS, 8, 4)
FIELD(MVFR1, SIMDINT, 12, 4)
FIELD(MVFR1, SIMDSP, 16, 4)
FIELD(MVFR1, SIMDHP, 20, 4)
FIELD(MVFR1, FPHP, 24, 4)
FIELD(MVFR1, SIMDFMAC, 28, 4)
FIELD(MVFR2, SIMDMISC, 0, 4)
FIELD(MVFR2, FPMISC, 4, 4)
QEMU_BUILD_BUG_ON(ARRAY_SIZE(((ARMCPU *)0)->ccsidr) <= R_V7M_CSSELR_INDEX_MASK);
/* If adding a feature bit which corresponds to a Linux ELF
@ -1747,7 +1768,6 @@ enum arm_features {
ARM_FEATURE_THUMB2,
ARM_FEATURE_PMSA, /* no MMU; may have Memory Protection Unit */
ARM_FEATURE_VFP3,
ARM_FEATURE_VFP_FP16,
ARM_FEATURE_NEON,
ARM_FEATURE_M, /* Microcontroller profile. */
ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling. */
@ -2538,25 +2558,18 @@ bool write_list_to_cpustate(ARMCPU *cpu);
/**
* write_cpustate_to_list:
* @cpu: ARMCPU
* @kvm_sync: true if this is for syncing back to KVM
*
* For each register listed in the ARMCPU cpreg_indexes list, write
* its value from the ARMCPUState structure into the cpreg_values list.
* This is used to copy info from TCG's working data structures into
* KVM or for outbound migration.
*
* @kvm_sync is true if we are doing this in order to sync the
* register state back to KVM. In this case we will only update
* values in the list if the previous list->cpustate sync actually
* successfully wrote the CPU state. Otherwise we will keep the value
* that is in the list.
*
* Returns: true if all register values were read correctly,
* false if some register was unknown or could not be read.
* Note that we do not stop early on failure -- we will attempt
* reading all registers in the list.
*/
bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync);
bool write_cpustate_to_list(ARMCPU *cpu);
#define ARM_CPUID_TI915T 0x54029152
#define ARM_CPUID_TI925T 0x54029252
@ -3283,6 +3296,11 @@ static inline bool isar_feature_aa32_dp(const ARMISARegisters *id)
return FIELD_EX32(id->id_isar6, ID_ISAR6, DP) != 0;
}
static inline bool isar_feature_aa32_fhm(const ARMISARegisters *id)
{
return FIELD_EX32(id->id_isar6, ID_ISAR6, FHM) != 0;
}
static inline bool isar_feature_aa32_fp16_arith(const ARMISARegisters *id)
{
/*
@ -3293,6 +3311,41 @@ static inline bool isar_feature_aa32_fp16_arith(const ARMISARegisters *id)
return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, FP) == 1;
}
/*
* We always set the FP and SIMD FP16 fields to indicate identical
* levels of support (assuming SIMD is implemented at all), so
* we only need one set of accessors.
*/
static inline bool isar_feature_aa32_fp16_spconv(const ARMISARegisters *id)
{
return FIELD_EX64(id->mvfr1, MVFR1, FPHP) > 0;
}
static inline bool isar_feature_aa32_fp16_dpconv(const ARMISARegisters *id)
{
return FIELD_EX64(id->mvfr1, MVFR1, FPHP) > 1;
}
static inline bool isar_feature_aa32_vsel(const ARMISARegisters *id)
{
return FIELD_EX64(id->mvfr2, MVFR2, FPMISC) >= 1;
}
static inline bool isar_feature_aa32_vcvt_dr(const ARMISARegisters *id)
{
return FIELD_EX64(id->mvfr2, MVFR2, FPMISC) >= 2;
}
static inline bool isar_feature_aa32_vrint(const ARMISARegisters *id)
{
return FIELD_EX64(id->mvfr2, MVFR2, FPMISC) >= 3;
}
static inline bool isar_feature_aa32_vminmaxnm(const ARMISARegisters *id)
{
return FIELD_EX64(id->mvfr2, MVFR2, FPMISC) >= 4;
}
/*
* 64-bit feature tests via id registers.
*/
@ -3356,6 +3409,11 @@ static inline bool isar_feature_aa64_dp(const ARMISARegisters *id)
return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, DP) != 0;
}
static inline bool isar_feature_aa64_fhm(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, FHM) != 0;
}
static inline bool isar_feature_aa64_jscvt(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, JSCVT) != 0;

2
target/arm/cpu64.c
View File

@ -308,6 +308,7 @@ static void aarch64_max_initfn(Object *obj)
t = FIELD_DP64(t, ID_AA64ISAR0, SM3, 1);
t = FIELD_DP64(t, ID_AA64ISAR0, SM4, 1);
t = FIELD_DP64(t, ID_AA64ISAR0, DP, 1);
t = FIELD_DP64(t, ID_AA64ISAR0, FHM, 1);
cpu->isar.id_aa64isar0 = t;
t = cpu->isar.id_aa64isar1;
@ -347,6 +348,7 @@ static void aarch64_max_initfn(Object *obj)
u = cpu->isar.id_isar6;
u = FIELD_DP32(u, ID_ISAR6, JSCVT, 1);
u = FIELD_DP32(u, ID_ISAR6, DP, 1);
u = FIELD_DP32(u, ID_ISAR6, FHM, 1);
cpu->isar.id_isar6 = u;
/*

27
target/arm/helper.c
View File

@ -265,7 +265,7 @@ static bool raw_accessors_invalid(const ARMCPRegInfo *ri)
return true;
}
bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync)
bool write_cpustate_to_list(ARMCPU *cpu)
{
/* Write the coprocessor state from cpu->env to the (index,value) list. */
int i;
@ -274,7 +274,6 @@ bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync)
for (i = 0; i < cpu->cpreg_array_len; i++) {
uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
const ARMCPRegInfo *ri;
uint64_t newval;
ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
if (!ri) {
@ -284,29 +283,7 @@ bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync)
if (ri->type & ARM_CP_NO_RAW) {
continue;
}
newval = read_raw_cp_reg(&cpu->env, ri);
if (kvm_sync) {
/*
* Only sync if the previous list->cpustate sync succeeded.
* Rather than tracking the success/failure state for every
* item in the list, we just recheck "does the raw write we must
* have made in write_list_to_cpustate() read back OK" here.
*/
uint64_t oldval = cpu->cpreg_values[i];
if (oldval == newval) {
continue;
}
write_raw_cp_reg(&cpu->env, ri, oldval);
if (read_raw_cp_reg(&cpu->env, ri) != oldval) {
continue;
}
write_raw_cp_reg(&cpu->env, ri, newval);
}
cpu->cpreg_values[i] = newval;
cpu->cpreg_values[i] = read_raw_cp_reg(&cpu->env, ri);
}
return ok;
}

9
target/arm/helper.h
View File

@ -677,6 +677,15 @@ DEF_HELPER_FLAGS_5(gvec_sqsub_s, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_5(gvec_sqsub_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(gvec_fmlal_a32, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(gvec_fmlal_a64, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(gvec_fmlal_idx_a32, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(gvec_fmlal_idx_a64, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
#ifdef TARGET_AARCH64
#include "helper-a64.h"
#include "helper-sve.h"

23
target/arm/kvm32.c
View File

@ -125,9 +125,6 @@ bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
if (extract32(id_pfr0, 12, 4) == 1) {
set_feature(&features, ARM_FEATURE_THUMB2EE);
}
if (extract32(ahcf->isar.mvfr1, 20, 4) == 1) {
set_feature(&features, ARM_FEATURE_VFP_FP16);
}
if (extract32(ahcf->isar.mvfr1, 12, 4) == 1) {
set_feature(&features, ARM_FEATURE_NEON);
}
@ -387,8 +384,24 @@ int kvm_arch_put_registers(CPUState *cs, int level)
return ret;
}
write_cpustate_to_list(cpu, true);
/* Note that we do not call write_cpustate_to_list()
* here, so we are only writing the tuple list back to
* KVM. This is safe because nothing can change the
* CPUARMState cp15 fields (in particular gdb accesses cannot)
* and so there are no changes to sync. In fact syncing would
* be wrong at this point: for a constant register where TCG and
* KVM disagree about its value, the preceding write_list_to_cpustate()
* would not have had any effect on the CPUARMState value (since the
* register is read-only), and a write_cpustate_to_list() here would
* then try to write the TCG value back into KVM -- this would either
* fail or incorrectly change the value the guest sees.
*
* If we ever want to allow the user to modify cp15 registers via
* the gdb stub, we would need to be more clever here (for instance
* tracking the set of registers kvm_arch_get_registers() successfully
* managed to update the CPUARMState with, and only allowing those
* to be written back up into the kernel).
*/
if (!write_list_to_kvmstate(cpu, level)) {
return EINVAL;
}

2
target/arm/kvm64.c
View File

@ -838,8 +838,6 @@ int kvm_arch_put_registers(CPUState *cs, int level)
return ret;
}
write_cpustate_to_list(cpu, true);
if (!write_list_to_kvmstate(cpu, level)) {
return EINVAL;
}

2
target/arm/machine.c
View File

@ -630,7 +630,7 @@ static int cpu_pre_save(void *opaque)
abort();
}
} else {
if (!write_cpustate_to_list(cpu, false)) {
if (!write_cpustate_to_list(cpu)) {
/* This should never fail. */
abort();
}

49
target/arm/translate-a64.c
View File

@ -10917,9 +10917,29 @@ static void disas_simd_3same_float(DisasContext *s, uint32_t insn)
if (!fp_access_check(s)) {
return;
}
handle_3same_float(s, size, elements, fpopcode, rd, rn, rm);
return;
case 0x1d: /* FMLAL */
case 0x3d: /* FMLSL */
case 0x59: /* FMLAL2 */
case 0x79: /* FMLSL2 */
if (size & 1 || !dc_isar_feature(aa64_fhm, s)) {
unallocated_encoding(s);
return;
}
if (fp_access_check(s)) {
int is_s = extract32(insn, 23, 1);
int is_2 = extract32(insn, 29, 1);
int data = (is_2 << 1) | is_s;
tcg_gen_gvec_3_ptr(vec_full_reg_offset(s, rd),
vec_full_reg_offset(s, rn),
vec_full_reg_offset(s, rm), cpu_env,
is_q ? 16 : 8, vec_full_reg_size(s),
data, gen_helper_gvec_fmlal_a64);
}
return;
default:
unallocated_encoding(s);
return;
@ -12739,6 +12759,17 @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn)
}
is_fp = 2;
break;
case 0x00: /* FMLAL */
case 0x04: /* FMLSL */
case 0x18: /* FMLAL2 */
case 0x1c: /* FMLSL2 */
if (is_scalar || size != MO_32 || !dc_isar_feature(aa64_fhm, s)) {
unallocated_encoding(s);
return;
}
size = MO_16;
/* is_fp, but we pass cpu_env not fp_status. */
break;
default:
unallocated_encoding(s);
return;
@ -12849,6 +12880,22 @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn)
tcg_temp_free_ptr(fpst);
}
return;
case 0x00: /* FMLAL */
case 0x04: /* FMLSL */
case 0x18: /* FMLAL2 */
case 0x1c: /* FMLSL2 */
{
int is_s = extract32(opcode, 2, 1);
int is_2 = u;
int data = (index << 2) | (is_2 << 1) | is_s;
tcg_gen_gvec_3_ptr(vec_full_reg_offset(s, rd),
vec_full_reg_offset(s, rn),
vec_full_reg_offset(s, rm), cpu_env,
is_q ? 16 : 8, vec_full_reg_size(s),
data, gen_helper_gvec_fmlal_idx_a64);
}
return;
}
if (size == 3) {

180
target/arm/translate.c
View File

@ -3357,14 +3357,10 @@ static const uint8_t fp_decode_rm[] = {
FPROUNDING_NEGINF,
};
static int disas_vfp_v8_insn(DisasContext *s, uint32_t insn)
static int disas_vfp_misc_insn(DisasContext *s, uint32_t insn)
{
uint32_t rd, rn, rm, dp = extract32(insn, 8, 1);
if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
return 1;
}
if (dp) {
VFP_DREG_D(rd, insn);
VFP_DREG_N(rn, insn);
@ -3375,15 +3371,18 @@ static int disas_vfp_v8_insn(DisasContext *s, uint32_t insn)
rm = VFP_SREG_M(insn);
}
if ((insn & 0x0f800e50) == 0x0e000a00) {
if ((insn & 0x0f800e50) == 0x0e000a00 && dc_isar_feature(aa32_vsel, s)) {
return handle_vsel(insn, rd, rn, rm, dp);
} else if ((insn & 0x0fb00e10) == 0x0e800a00) {
} else if ((insn & 0x0fb00e10) == 0x0e800a00 &&
dc_isar_feature(aa32_vminmaxnm, s)) {
return handle_vminmaxnm(insn, rd, rn, rm, dp);
} else if ((insn & 0x0fbc0ed0) == 0x0eb80a40) {
} else if ((insn & 0x0fbc0ed0) == 0x0eb80a40 &&
dc_isar_feature(aa32_vrint, s)) {
/* VRINTA, VRINTN, VRINTP, VRINTM */
int rounding = fp_decode_rm[extract32(insn, 16, 2)];
return handle_vrint(insn, rd, rm, dp, rounding);
} else if ((insn & 0x0fbc0e50) == 0x0ebc0a40) {
} else if ((insn & 0x0fbc0e50) == 0x0ebc0a40 &&
dc_isar_feature(aa32_vcvt_dr, s)) {
/* VCVTA, VCVTN, VCVTP, VCVTM */
int rounding = fp_decode_rm[extract32(insn, 16, 2)];
return handle_vcvt(insn, rd, rm, dp, rounding);
@ -3427,10 +3426,12 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
}
if (extract32(insn, 28, 4) == 0xf) {
/* Encodings with T=1 (Thumb) or unconditional (ARM):
* only used in v8 and above.
/*
* Encodings with T=1 (Thumb) or unconditional (ARM):
* only used for the "miscellaneous VFP features" added in v8A
* and v7M (and gated on the MVFR2.FPMisc field).
*/
return disas_vfp_v8_insn(s, insn);
return disas_vfp_misc_insn(s, insn);
}
dp = ((insn & 0xf00) == 0xb00);
@ -3663,17 +3664,27 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
* UNPREDICTABLE if bit 8 is set prior to ARMv8
* (we choose to UNDEF)
*/
if ((dp && !arm_dc_feature(s, ARM_FEATURE_V8)) ||
!arm_dc_feature(s, ARM_FEATURE_VFP_FP16)) {
return 1;
if (dp) {
if (!dc_isar_feature(aa32_fp16_dpconv, s)) {
return 1;
}
} else {
if (!dc_isar_feature(aa32_fp16_spconv, s)) {
return 1;
}
}
rm_is_dp = false;
break;
case 0x06: /* vcvtb.f16.f32, vcvtb.f16.f64 */
case 0x07: /* vcvtt.f16.f32, vcvtt.f16.f64 */
if ((dp && !arm_dc_feature(s, ARM_FEATURE_V8)) ||
!arm_dc_feature(s, ARM_FEATURE_VFP_FP16)) {
return 1;
if (dp) {
if (!dc_isar_feature(aa32_fp16_dpconv, s)) {
return 1;
}
} else {
if (!dc_isar_feature(aa32_fp16_spconv, s)) {
return 1;
}
}
rd_is_dp = false;
break;
@ -7876,7 +7887,7 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
TCGv_ptr fpst;
TCGv_i32 ahp;
if (!arm_dc_feature(s, ARM_FEATURE_VFP_FP16) ||
if (!dc_isar_feature(aa32_fp16_spconv, s) ||
q || (rm & 1)) {
return 1;
}
@ -7908,7 +7919,7 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
{
TCGv_ptr fpst;
TCGv_i32 ahp;
if (!arm_dc_feature(s, ARM_FEATURE_VFP_FP16) ||
if (!dc_isar_feature(aa32_fp16_spconv, s) ||
q || (rd & 1)) {
return 1;
}
@ -8372,15 +8383,9 @@ static int disas_neon_insn_3same_ext(DisasContext *s, uint32_t insn)
gen_helper_gvec_3_ptr *fn_gvec_ptr = NULL;
int rd, rn, rm, opr_sz;
int data = 0;
bool q;
q = extract32(insn, 6, 1);
VFP_DREG_D(rd, insn);
VFP_DREG_N(rn, insn);
VFP_DREG_M(rm, insn);
if ((rd | rn | rm) & q) {
return 1;
}
int off_rn, off_rm;
bool is_long = false, q = extract32(insn, 6, 1);
bool ptr_is_env = false;
if ((insn & 0xfe200f10) == 0xfc200800) {
/* VCMLA -- 1111 110R R.1S .... .... 1000 ...0 .... */
@ -8407,10 +8412,39 @@ static int disas_neon_insn_3same_ext(DisasContext *s, uint32_t insn)
return 1;
}
fn_gvec = u ? gen_helper_gvec_udot_b : gen_helper_gvec_sdot_b;
} else if ((insn & 0xff300f10) == 0xfc200810) {
/* VFM[AS]L -- 1111 1100 S.10 .... .... 1000 .Q.1 .... */
int is_s = extract32(insn, 23, 1);
if (!dc_isar_feature(aa32_fhm, s)) {
return 1;
}
is_long = true;
data = is_s; /* is_2 == 0 */
fn_gvec_ptr = gen_helper_gvec_fmlal_a32;
ptr_is_env = true;
} else {
return 1;
}
VFP_DREG_D(rd, insn);
if (rd & q) {
return 1;
}
if (q || !is_long) {
VFP_DREG_N(rn, insn);
VFP_DREG_M(rm, insn);
if ((rn | rm) & q & !is_long) {
return 1;
}
off_rn = vfp_reg_offset(1, rn);
off_rm = vfp_reg_offset(1, rm);
} else {
rn = VFP_SREG_N(insn);
rm = VFP_SREG_M(insn);
off_rn = vfp_reg_offset(0, rn);
off_rm = vfp_reg_offset(0, rm);
}
if (s->fp_excp_el) {
gen_exception_insn(s, 4, EXCP_UDEF,
syn_simd_access_trap(1, 0xe, false), s->fp_excp_el);
@ -8422,16 +8456,19 @@ static int disas_neon_insn_3same_ext(DisasContext *s, uint32_t insn)
opr_sz = (1 + q) * 8;
if (fn_gvec_ptr) {
TCGv_ptr fpst = get_fpstatus_ptr(1);
tcg_gen_gvec_3_ptr(vfp_reg_offset(1, rd),
vfp_reg_offset(1, rn),
vfp_reg_offset(1, rm), fpst,
TCGv_ptr ptr;
if (ptr_is_env) {
ptr = cpu_env;
} else {
ptr = get_fpstatus_ptr(1);
}
tcg_gen_gvec_3_ptr(vfp_reg_offset(1, rd), off_rn, off_rm, ptr,
opr_sz, opr_sz, data, fn_gvec_ptr);
tcg_temp_free_ptr(fpst);
if (!ptr_is_env) {
tcg_temp_free_ptr(ptr);
}
} else {
tcg_gen_gvec_3_ool(vfp_reg_offset(1, rd),
vfp_reg_offset(1, rn),
vfp_reg_offset(1, rm),
tcg_gen_gvec_3_ool(vfp_reg_offset(1, rd), off_rn, off_rm,
opr_sz, opr_sz, data, fn_gvec);
}
return 0;
@ -8450,14 +8487,9 @@ static int disas_neon_insn_2reg_scalar_ext(DisasContext *s, uint32_t insn)
gen_helper_gvec_3 *fn_gvec = NULL;
gen_helper_gvec_3_ptr *fn_gvec_ptr = NULL;
int rd, rn, rm, opr_sz, data;
bool q;
q = extract32(insn, 6, 1);
VFP_DREG_D(rd, insn);
VFP_DREG_N(rn, insn);
if ((rd | rn) & q) {
return 1;
}
int off_rn, off_rm;
bool is_long = false, q = extract32(insn, 6, 1);
bool ptr_is_env = false;
if ((insn & 0xff000f10) == 0xfe000800) {
/* VCMLA (indexed) -- 1111 1110 S.RR .... .... 1000 ...0 .... */
@ -8486,6 +8518,7 @@ static int disas_neon_insn_2reg_scalar_ext(DisasContext *s, uint32_t insn)
} else if ((insn & 0xffb00f00) == 0xfe200d00) {
/* V[US]DOT -- 1111 1110 0.10 .... .... 1101 .Q.U .... */
int u = extract32(insn, 4, 1);
if (!dc_isar_feature(aa32_dp, s)) {
return 1;
}
@ -8493,10 +8526,48 @@ static int disas_neon_insn_2reg_scalar_ext(DisasContext *s, uint32_t insn)
/* rm is just Vm, and index is M. */
data = extract32(insn, 5, 1); /* index */
rm = extract32(insn, 0, 4);
} else if ((insn & 0xffa00f10) == 0xfe000810) {
/* VFM[AS]L -- 1111 1110 0.0S .... .... 1000 .Q.1 .... */
int is_s = extract32(insn, 20, 1);
int vm20 = extract32(insn, 0, 3);
int vm3 = extract32(insn, 3, 1);
int m = extract32(insn, 5, 1);
int index;
if (!dc_isar_feature(aa32_fhm, s)) {
return 1;
}
if (q) {
rm = vm20;
index = m * 2 + vm3;
} else {
rm = vm20 * 2 + m;
index = vm3;
}
is_long = true;
data = (index << 2) | is_s; /* is_2 == 0 */
fn_gvec_ptr = gen_helper_gvec_fmlal_idx_a32;
ptr_is_env = true;
} else {
return 1;
}
VFP_DREG_D(rd, insn);
if (rd & q) {
return 1;
}
if (q || !is_long) {
VFP_DREG_N(rn, insn);
if (rn & q & !is_long) {
return 1;
}
off_rn = vfp_reg_offset(1, rn);
off_rm = vfp_reg_offset(1, rm);
} else {
rn = VFP_SREG_N(insn);
off_rn = vfp_reg_offset(0, rn);
off_rm = vfp_reg_offset(0, rm);
}
if (s->fp_excp_el) {
gen_exception_insn(s, 4, EXCP_UDEF,
syn_simd_access_trap(1, 0xe, false), s->fp_excp_el);
@ -8508,16 +8579,19 @@ static int disas_neon_insn_2reg_scalar_ext(DisasContext *s, uint32_t insn)
opr_sz = (1 + q) * 8;
if (fn_gvec_ptr) {
TCGv_ptr fpst = get_fpstatus_ptr(1);
tcg_gen_gvec_3_ptr(vfp_reg_offset(1, rd),
vfp_reg_offset(1, rn),
vfp_reg_offset(1, rm), fpst,
TCGv_ptr ptr;
if (ptr_is_env) {
ptr = cpu_env;
} else {
ptr = get_fpstatus_ptr(1);
}
tcg_gen_gvec_3_ptr(vfp_reg_offset(1, rd), off_rn, off_rm, ptr,
opr_sz, opr_sz, data, fn_gvec_ptr);
tcg_temp_free_ptr(fpst);
if (!ptr_is_env) {
tcg_temp_free_ptr(ptr);
}
} else {
tcg_gen_gvec_3_ool(vfp_reg_offset(1, rd),
vfp_reg_offset(1, rn),
vfp_reg_offset(1, rm),
tcg_gen_gvec_3_ool(vfp_reg_offset(1, rd), off_rn, off_rm,
opr_sz, opr_sz, data, fn_gvec);
}
return 0;

148
target/arm/vec_helper.c
View File

@ -898,3 +898,151 @@ void HELPER(gvec_sqsub_d)(void *vd, void *vq, void *vn,
}
clear_tail(d, oprsz, simd_maxsz(desc));
}
/*
* Convert float16 to float32, raising no exceptions and
* preserving exceptional values, including SNaN.
* This is effectively an unpack+repack operation.
*/
static float32 float16_to_float32_by_bits(uint32_t f16, bool fz16)
{
const int f16_bias = 15;
const int f32_bias = 127;
uint32_t sign = extract32(f16, 15, 1);
uint32_t exp = extract32(f16, 10, 5);
uint32_t frac = extract32(f16, 0, 10);
if (exp == 0x1f) {
/* Inf or NaN */
exp = 0xff;
} else if (exp == 0) {
/* Zero or denormal. */
if (frac != 0) {
if (fz16) {
frac = 0;
} else {
/*
* Denormal; these are all normal float32.
* Shift the fraction so that the msb is at bit 11,
* then remove bit 11 as the implicit bit of the
* normalized float32. Note that we still go through
* the shift for normal numbers below, to put the
* float32 fraction at the right place.
*/
int shift = clz32(frac) - 21;
frac = (frac << shift) & 0x3ff;
exp = f32_bias - f16_bias - shift + 1;
}
}
} else {
/* Normal number; adjust the bias. */
exp += f32_bias - f16_bias;
}
sign <<= 31;
exp <<= 23;
frac <<= 23 - 10;
return sign | exp | frac;
}
static uint64_t load4_f16(uint64_t *ptr, int is_q, int is_2)
{
/*
* Branchless load of u32[0], u64[0], u32[1], or u64[1].
* Load the 2nd qword iff is_q & is_2.
* Shift to the 2nd dword iff !is_q & is_2.
* For !is_q & !is_2, the upper bits of the result are garbage.
*/
return ptr[is_q & is_2] >> ((is_2 & ~is_q) << 5);
}
/*
* Note that FMLAL requires oprsz == 8 or oprsz == 16,
* as there is not yet SVE versions that might use blocking.
*/
static void do_fmlal(float32 *d, void *vn, void *vm, float_status *fpst,
uint32_t desc, bool fz16)
{
intptr_t i, oprsz = simd_oprsz(desc);
int is_s = extract32(desc, SIMD_DATA_SHIFT, 1);
int is_2 = extract32(desc, SIMD_DATA_SHIFT + 1, 1);
int is_q = oprsz == 16;
uint64_t n_4, m_4;
/* Pre-load all of the f16 data, avoiding overlap issues. */
n_4 = load4_f16(vn, is_q, is_2);
m_4 = load4_f16(vm, is_q, is_2);
/* Negate all inputs for FMLSL at once. */
if (is_s) {
n_4 ^= 0x8000800080008000ull;
}
for (i = 0; i < oprsz / 4; i++) {
float32 n_1 = float16_to_float32_by_bits(n_4 >> (i * 16), fz16);
float32 m_1 = float16_to_float32_by_bits(m_4 >> (i * 16), fz16);
d[H4(i)] = float32_muladd(n_1, m_1, d[H4(i)], 0, fpst);
}
clear_tail(d, oprsz, simd_maxsz(desc));
}
void HELPER(gvec_fmlal_a32)(void *vd, void *vn, void *vm,
void *venv, uint32_t desc)
{
CPUARMState *env = venv;
do_fmlal(vd, vn, vm, &env->vfp.standard_fp_status, desc,
get_flush_inputs_to_zero(&env->vfp.fp_status_f16));
}
void HELPER(gvec_fmlal_a64)(void *vd, void *vn, void *vm,
void *venv, uint32_t desc)
{
CPUARMState *env = venv;
do_fmlal(vd, vn, vm, &env->vfp.fp_status, desc,
get_flush_inputs_to_zero(&env->vfp.fp_status_f16));
}
static void do_fmlal_idx(float32 *d, void *vn, void *vm, float_status *fpst,
uint32_t desc, bool fz16)
{
intptr_t i, oprsz = simd_oprsz(desc);
int is_s = extract32(desc, SIMD_DATA_SHIFT, 1);
int is_2 = extract32(desc, SIMD_DATA_SHIFT + 1, 1);
int index = extract32(desc, SIMD_DATA_SHIFT + 2, 3);
int is_q = oprsz == 16;
uint64_t n_4;
float32 m_1;
/* Pre-load all of the f16 data, avoiding overlap issues. */
n_4 = load4_f16(vn, is_q, is_2);
/* Negate all inputs for FMLSL at once. */
if (is_s) {
n_4 ^= 0x8000800080008000ull;
}
m_1 = float16_to_float32_by_bits(((float16 *)vm)[H2(index)], fz16);
for (i = 0; i < oprsz / 4; i++) {
float32 n_1 = float16_to_float32_by_bits(n_4 >> (i * 16), fz16);
d[H4(i)] = float32_muladd(n_1, m_1, d[H4(i)], 0, fpst);
}
clear_tail(d, oprsz, simd_maxsz(desc));
}
void HELPER(gvec_fmlal_idx_a32)(void *vd, void *vn, void *vm,
void *venv, uint32_t desc)
{
CPUARMState *env = venv;
do_fmlal_idx(vd, vn, vm, &env->vfp.standard_fp_status, desc,
get_flush_inputs_to_zero(&env->vfp.fp_status_f16));
}
void HELPER(gvec_fmlal_idx_a64)(void *vd, void *vn, void *vm,
void *venv, uint32_t desc)
{
CPUARMState *env = venv;
do_fmlal_idx(vd, vn, vm, &env->vfp.fp_status, desc,
get_flush_inputs_to_zero(&env->vfp.fp_status_f16));
}