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Merge branch 'target-arm.for-upstream' of git://git.linaro.org/people/pmaydell/qemu-arm 

* 'target-arm.for-upstream' of git://git.linaro.org/people/pmaydell/qemu-arm: (33 commits)
  target-arm: Remove ARM_CPUID_* macros
  target-arm: Remove remaining old cp15 infrastructure
  target-arm: Move block cache ops to new cp15 framework
  target-arm: Remove c0_cachetype CPUARMState field
  target-arm: Convert final ID registers
  target-arm: Convert MPIDR
  target-arm: Convert cp15 cache ID registers
  target-arm: Convert cp15 crn=0 crm={1,2} feature registers
  target-arm: Convert cp15 crn=1 registers
  target-arm: Convert cp15 crn=9 registers
  target-arm: Convert cp15 crn=6 registers
  target-arm: convert cp15 crn=7 registers
  target-arm: Convert cp15 VA-PA translation registers
  target-arm: Convert cp15 MMU TLB control
  target-arm: Convert cp15 crn=15 registers
  target-arm: Convert cp15 crn=10 registers
  target-arm: Convert cp15 crn=13 registers
  target-arm: Convert cp15 crn=2 registers
  target-arm: Convert MMU fault status cp15 registers
  target-arm: Convert cp15 c3 register
  ...
This commit is contained in:
Blue Swirl 2012-06-24 10:48:01 +00:00
parent 8dacfcb407 b2d06f9607
commit 959a255dfb
11 changed files with 1893 additions and 1540 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

293
hw/pxa2xx.c
View File

@ -224,210 +224,161 @@ static const VMStateDescription vmstate_pxa2xx_cm = {
}
};
static uint32_t pxa2xx_clkpwr_read(void *opaque, int op2, int reg, int crm)
static int pxa2xx_clkcfg_read(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t *value)
{
PXA2xxState *s = (PXA2xxState *) opaque;
PXA2xxState *s = (PXA2xxState *)ri->opaque;
*value = s->clkcfg;
return 0;
}
switch (reg) {
case 6: /* Clock Configuration register */
return s->clkcfg;
case 7: /* Power Mode register */
return 0;
default:
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
break;
static int pxa2xx_clkcfg_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
PXA2xxState *s = (PXA2xxState *)ri->opaque;
s->clkcfg = value & 0xf;
if (value & 2) {
printf("%s: CPU frequency change attempt\n", __func__);
}
return 0;
}
static void pxa2xx_clkpwr_write(void *opaque, int op2, int reg, int crm,
uint32_t value)
static int pxa2xx_pwrmode_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
PXA2xxState *s = (PXA2xxState *) opaque;
PXA2xxState *s = (PXA2xxState *)ri->opaque;
static const char *pwrmode[8] = {
"Normal", "Idle", "Deep-idle", "Standby",
"Sleep", "reserved (!)", "reserved (!)", "Deep-sleep",
};
switch (reg) {
case 6: /* Clock Configuration register */
s->clkcfg = value & 0xf;
if (value & 2)
printf("%s: CPU frequency change attempt\n", __FUNCTION__);
if (value & 8) {
printf("%s: CPU voltage change attempt\n", __func__);
}
switch (value & 7) {
case 0:
/* Do nothing */
break;
case 7: /* Power Mode register */
if (value & 8)
printf("%s: CPU voltage change attempt\n", __FUNCTION__);
switch (value & 7) {
case 0:
/* Do nothing */
break;
case 1:
/* Idle */
if (!(s->cm_regs[CCCR >> 2] & (1 << 31))) { /* CPDIS */
cpu_interrupt(&s->cpu->env, CPU_INTERRUPT_HALT);
break;
}
/* Fall through. */
case 2:
/* Deep-Idle */
case 1:
/* Idle */
if (!(s->cm_regs[CCCR >> 2] & (1 << 31))) { /* CPDIS */
cpu_interrupt(&s->cpu->env, CPU_INTERRUPT_HALT);
s->pm_regs[RCSR >> 2] |= 0x8; /* Set GPR */
goto message;
break;
}
/* Fall through. */
case 3:
s->cpu->env.uncached_cpsr =
ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I;
s->cpu->env.cp15.c1_sys = 0;
s->cpu->env.cp15.c1_coproc = 0;
s->cpu->env.cp15.c2_base0 = 0;
s->cpu->env.cp15.c3 = 0;
s->pm_regs[PSSR >> 2] |= 0x8; /* Set STS */
s->pm_regs[RCSR >> 2] |= 0x8; /* Set GPR */
case 2:
/* Deep-Idle */
cpu_interrupt(&s->cpu->env, CPU_INTERRUPT_HALT);
s->pm_regs[RCSR >> 2] |= 0x8; /* Set GPR */
goto message;
/*
* The scratch-pad register is almost universally used
* for storing the return address on suspend. For the
* lack of a resuming bootloader, perform a jump
* directly to that address.
*/
memset(s->cpu->env.regs, 0, 4 * 15);
s->cpu->env.regs[15] = s->pm_regs[PSPR >> 2];
case 3:
s->cpu->env.uncached_cpsr =
ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I;
s->cpu->env.cp15.c1_sys = 0;
s->cpu->env.cp15.c1_coproc = 0;
s->cpu->env.cp15.c2_base0 = 0;
s->cpu->env.cp15.c3 = 0;
s->pm_regs[PSSR >> 2] |= 0x8; /* Set STS */
s->pm_regs[RCSR >> 2] |= 0x8; /* Set GPR */
/*
* The scratch-pad register is almost universally used
* for storing the return address on suspend. For the
* lack of a resuming bootloader, perform a jump
* directly to that address.
*/
memset(s->cpu->env.regs, 0, 4 * 15);
s->cpu->env.regs[15] = s->pm_regs[PSPR >> 2];
#if 0
buffer = 0xe59ff000; /* ldr pc, [pc, #0] */
cpu_physical_memory_write(0, &buffer, 4);
buffer = s->pm_regs[PSPR >> 2];
cpu_physical_memory_write(8, &buffer, 4);
buffer = 0xe59ff000; /* ldr pc, [pc, #0] */
cpu_physical_memory_write(0, &buffer, 4);
buffer = s->pm_regs[PSPR >> 2];
cpu_physical_memory_write(8, &buffer, 4);
#endif
/* Suspend */
cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);
/* Suspend */
cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);
goto message;
default:
message:
printf("%s: machine entered %s mode\n", __FUNCTION__,
pwrmode[value & 7]);
}
break;
goto message;
default:
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
break;
message:
printf("%s: machine entered %s mode\n", __func__,
pwrmode[value & 7]);
}
return 0;
}
/* Performace Monitoring Registers */
#define CPPMNC 0 /* Performance Monitor Control register */
#define CPCCNT 1 /* Clock Counter register */
#define CPINTEN 4 /* Interrupt Enable register */
#define CPFLAG 5 /* Overflow Flag register */
#define CPEVTSEL 8 /* Event Selection register */
#define CPPMN0 0 /* Performance Count register 0 */
#define CPPMN1 1 /* Performance Count register 1 */
#define CPPMN2 2 /* Performance Count register 2 */
#define CPPMN3 3 /* Performance Count register 3 */
static uint32_t pxa2xx_perf_read(void *opaque, int op2, int reg, int crm)
static int pxa2xx_cppmnc_read(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t *value)
{
PXA2xxState *s = (PXA2xxState *) opaque;
PXA2xxState *s = (PXA2xxState *)ri->opaque;
*value = s->pmnc;
return 0;
}
switch (reg) {
case CPPMNC:
return s->pmnc;
case CPCCNT:
if (s->pmnc & 1)
return qemu_get_clock_ns(vm_clock);
else
return 0;
case CPINTEN:
case CPFLAG:
case CPEVTSEL:
return 0;
static int pxa2xx_cppmnc_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
PXA2xxState *s = (PXA2xxState *)ri->opaque;
s->pmnc = value;
return 0;
}
default:
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
break;
static int pxa2xx_cpccnt_read(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t *value)
{
PXA2xxState *s = (PXA2xxState *)ri->opaque;
if (s->pmnc & 1) {
*value = qemu_get_clock_ns(vm_clock);
} else {
*value = 0;
}
return 0;
}
static void pxa2xx_perf_write(void *opaque, int op2, int reg, int crm,
uint32_t value)
static const ARMCPRegInfo pxa_cp_reginfo[] = {
/* cp14 crn==1: perf registers */
{ .name = "CPPMNC", .cp = 14, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.readfn = pxa2xx_cppmnc_read, .writefn = pxa2xx_cppmnc_write },
{ .name = "CPCCNT", .cp = 14, .crn = 1, .crm = 1, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.readfn = pxa2xx_cpccnt_read, .writefn = arm_cp_write_ignore },
{ .name = "CPINTEN", .cp = 14, .crn = 1, .crm = 4, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPFLAG", .cp = 14, .crn = 1, .crm = 5, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPEVTSEL", .cp = 14, .crn = 1, .crm = 8, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
/* cp14 crn==2: performance count registers */
{ .name = "CPPMN0", .cp = 14, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPPMN1", .cp = 14, .crn = 2, .crm = 1, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPPMN2", .cp = 14, .crn = 2, .crm = 2, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPPMN3", .cp = 14, .crn = 2, .crm = 3, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
/* cp14 crn==6: CLKCFG */
{ .name = "CLKCFG", .cp = 14, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.readfn = pxa2xx_clkcfg_read, .writefn = pxa2xx_clkcfg_write },
/* cp14 crn==7: PWRMODE */
{ .name = "PWRMODE", .cp = 14, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.readfn = arm_cp_read_zero, .writefn = pxa2xx_pwrmode_write },
REGINFO_SENTINEL
};
static void pxa2xx_setup_cp14(PXA2xxState *s)
{
PXA2xxState *s = (PXA2xxState *) opaque;
switch (reg) {
case CPPMNC:
s->pmnc = value;
break;
case CPCCNT:
case CPINTEN:
case CPFLAG:
case CPEVTSEL:
break;
default:
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
break;
}
}
static uint32_t pxa2xx_cp14_read(void *opaque, int op2, int reg, int crm)
{
switch (crm) {
case 0:
return pxa2xx_clkpwr_read(opaque, op2, reg, crm);
case 1:
return pxa2xx_perf_read(opaque, op2, reg, crm);
case 2:
switch (reg) {
case CPPMN0:
case CPPMN1:
case CPPMN2:
case CPPMN3:
return 0;
}
/* Fall through */
default:
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
break;
}
return 0;
}
static void pxa2xx_cp14_write(void *opaque, int op2, int reg, int crm,
uint32_t value)
{
switch (crm) {
case 0:
pxa2xx_clkpwr_write(opaque, op2, reg, crm, value);
break;
case 1:
pxa2xx_perf_write(opaque, op2, reg, crm, value);
break;
case 2:
switch (reg) {
case CPPMN0:
case CPPMN1:
case CPPMN2:
case CPPMN3:
return;
}
/* Fall through */
default:
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
break;
}
define_arm_cp_regs_with_opaque(s->cpu, pxa_cp_reginfo, s);
}
#define MDCNFG 0x00 /* SDRAM Configuration register */
@ -2133,7 +2084,7 @@ PXA2xxState *pxa270_init(MemoryRegion *address_space,
memory_region_add_subregion(address_space, s->cm_base, &s->cm_iomem);
vmstate_register(NULL, 0, &vmstate_pxa2xx_cm, s);
cpu_arm_set_cp_io(&s->cpu->env, 14, pxa2xx_cp14_read, pxa2xx_cp14_write, s);
pxa2xx_setup_cp14(s);
s->mm_base = 0x48000000;
s->mm_regs[MDMRS >> 2] = 0x00020002;
@ -2264,7 +2215,7 @@ PXA2xxState *pxa255_init(MemoryRegion *address_space, unsigned int sdram_size)
memory_region_add_subregion(address_space, s->cm_base, &s->cm_iomem);
vmstate_register(NULL, 0, &vmstate_pxa2xx_cm, s);
cpu_arm_set_cp_io(&s->cpu->env, 14, pxa2xx_cp14_read, pxa2xx_cp14_write, s);
pxa2xx_setup_cp14(s);
s->mm_base = 0x48000000;
s->mm_regs[MDMRS >> 2] = 0x00020002;

53
hw/pxa2xx_pic.c
View File

@ -209,33 +209,42 @@ static const int pxa2xx_cp_reg_map[0x10] = {
[0xa] = ICPR2,
};
static uint32_t pxa2xx_pic_cp_read(void *opaque, int op2, int reg, int crm)
static int pxa2xx_pic_cp_read(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t *value)
{
target_phys_addr_t offset;
if (pxa2xx_cp_reg_map[reg] == -1) {
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
return 0;
}
offset = pxa2xx_cp_reg_map[reg];
return pxa2xx_pic_mem_read(opaque, offset, 4);
int offset = pxa2xx_cp_reg_map[ri->crn];
*value = pxa2xx_pic_mem_read(ri->opaque, offset, 4);
return 0;
}
static void pxa2xx_pic_cp_write(void *opaque, int op2, int reg, int crm,
uint32_t value)
static int pxa2xx_pic_cp_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
target_phys_addr_t offset;
if (pxa2xx_cp_reg_map[reg] == -1) {
printf("%s: Bad register 0x%x\n", __FUNCTION__, reg);
return;
}
offset = pxa2xx_cp_reg_map[reg];
pxa2xx_pic_mem_write(opaque, offset, value, 4);
int offset = pxa2xx_cp_reg_map[ri->crn];
pxa2xx_pic_mem_write(ri->opaque, offset, value, 4);
return 0;
}
#define REGINFO_FOR_PIC_CP(NAME, CRN) \
{ .name = NAME, .cp = 6, .crn = CRN, .crm = 0, .opc1 = 0, .opc2 = 0, \
.access = PL1_RW, \
.readfn = pxa2xx_pic_cp_read, .writefn = pxa2xx_pic_cp_write }
static const ARMCPRegInfo pxa_pic_cp_reginfo[] = {
REGINFO_FOR_PIC_CP("ICIP", 0),
REGINFO_FOR_PIC_CP("ICMR", 1),
REGINFO_FOR_PIC_CP("ICLR", 2),
REGINFO_FOR_PIC_CP("ICFP", 3),
REGINFO_FOR_PIC_CP("ICPR", 4),
REGINFO_FOR_PIC_CP("ICHP", 5),
REGINFO_FOR_PIC_CP("ICIP2", 6),
REGINFO_FOR_PIC_CP("ICMR2", 7),
REGINFO_FOR_PIC_CP("ICLR2", 8),
REGINFO_FOR_PIC_CP("ICFP2", 9),
REGINFO_FOR_PIC_CP("ICPR2", 0xa),
REGINFO_SENTINEL
};
static const MemoryRegionOps pxa2xx_pic_ops = {
.read = pxa2xx_pic_mem_read,
.write = pxa2xx_pic_mem_write,
@ -274,7 +283,7 @@ DeviceState *pxa2xx_pic_init(target_phys_addr_t base, ARMCPU *cpu)
sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
/* Enable IC coprocessor access. */
cpu_arm_set_cp_io(env, 6, pxa2xx_pic_cp_read, pxa2xx_pic_cp_write, s);
define_arm_cp_regs_with_opaque(arm_env_get_cpu(env), pxa_pic_cp_reginfo, s);
return dev;
}

5
linux-user/cpu-uname.c
View File

@ -35,10 +35,7 @@ const char *cpu_to_uname_machine(void *cpu_env)
* armv7l; to get a list of CPU arch names from the linux source, use:
* grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
* see arch/arm/kernel/setup.c: setup_processor()
*
* to test by CPU id, compare cpu_env->cp15.c0_cpuid to ARM_CPUID_*
* defines and to test by CPU feature, use arm_feature(cpu_env,
* ARM_FEATURE_*) */
*/
/* in theory, endianness is configurable on some ARM CPUs, but this isn't
* used in user mode emulation */

5
target-arm/cpu-qom.h
View File

@ -58,6 +58,9 @@ typedef struct ARMCPU {
CPUARMState env;
/* Coprocessor information */
GHashTable *cp_regs;
/* The instance init functions for implementation-specific subclasses
* set these fields to specify the implementation-dependent values of
* various constant registers and reset values of non-constant
@ -94,6 +97,7 @@ typedef struct ARMCPU {
*/
uint32_t ccsidr[16];
uint32_t reset_cbar;
uint32_t reset_auxcr;
} ARMCPU;
static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
@ -104,5 +108,6 @@ static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
#define ENV_GET_CPU(e) CPU(arm_env_get_cpu(e))
void arm_cpu_realize(ARMCPU *cpu);
void register_cp_regs_for_features(ARMCPU *cpu);
#endif

230
target-arm/cpu.c
View File

@ -23,6 +23,38 @@
#if !defined(CONFIG_USER_ONLY)
#include "hw/loader.h"
#endif
#include "sysemu.h"
static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque)
{
/* Reset a single ARMCPRegInfo register */
ARMCPRegInfo *ri = value;
ARMCPU *cpu = opaque;
if (ri->type & ARM_CP_SPECIAL) {
return;
}
if (ri->resetfn) {
ri->resetfn(&cpu->env, ri);
return;
}
/* A zero offset is never possible as it would be regs[0]
* so we use it to indicate that reset is being handled elsewhere.
* This is basically only used for fields in non-core coprocessors
* (like the pxa2xx ones).
*/
if (!ri->fieldoffset) {
return;
}
if (ri->type & ARM_CP_64BIT) {
CPREG_FIELD64(&cpu->env, ri) = ri->resetvalue;
} else {
CPREG_FIELD32(&cpu->env, ri) = ri->resetvalue;
}
}
/* CPUClass::reset() */
static void arm_cpu_reset(CPUState *s)
@ -39,30 +71,10 @@ static void arm_cpu_reset(CPUState *s)
acc->parent_reset(s);
memset(env, 0, offsetof(CPUARMState, breakpoints));
env->cp15.c15_config_base_address = cpu->reset_cbar;
env->cp15.c0_cpuid = cpu->midr;
g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu);
env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid;
env->vfp.xregs[ARM_VFP_MVFR0] = cpu->mvfr0;
env->vfp.xregs[ARM_VFP_MVFR1] = cpu->mvfr1;
env->cp15.c0_cachetype = cpu->ctr;
env->cp15.c1_sys = cpu->reset_sctlr;
env->cp15.c0_c1[0] = cpu->id_pfr0;
env->cp15.c0_c1[1] = cpu->id_pfr1;
env->cp15.c0_c1[2] = cpu->id_dfr0;
env->cp15.c0_c1[3] = cpu->id_afr0;
env->cp15.c0_c1[4] = cpu->id_mmfr0;
env->cp15.c0_c1[5] = cpu->id_mmfr1;
env->cp15.c0_c1[6] = cpu->id_mmfr2;
env->cp15.c0_c1[7] = cpu->id_mmfr3;
env->cp15.c0_c2[0] = cpu->id_isar0;
env->cp15.c0_c2[1] = cpu->id_isar1;
env->cp15.c0_c2[2] = cpu->id_isar2;
env->cp15.c0_c2[3] = cpu->id_isar3;
env->cp15.c0_c2[4] = cpu->id_isar4;
env->cp15.c0_c2[5] = cpu->id_isar5;
env->cp15.c15_i_min = 0xff0;
env->cp15.c0_clid = cpu->clidr;
memcpy(env->cp15.c0_ccsid, cpu->ccsidr, ARRAY_SIZE(cpu->ccsidr));
if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
@ -99,11 +111,6 @@ static void arm_cpu_reset(CPUState *s)
}
}
env->vfp.xregs[ARM_VFP_FPEXC] = 0;
env->cp15.c2_base_mask = 0xffffc000u;
/* v7 performance monitor control register: same implementor
* field as main ID register, and we implement no event counters.
*/
env->cp15.c9_pmcr = (cpu->midr & 0xff000000);
#endif
set_flush_to_zero(1, &env->vfp.standard_fp_status);
set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);
@ -130,6 +137,14 @@ static void arm_cpu_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
cpu_exec_init(&cpu->env);
cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
g_free, g_free);
}
static void arm_cpu_finalizefn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
g_hash_table_destroy(cpu->cp_regs);
}
void arm_cpu_realize(ARMCPU *cpu)
@ -145,6 +160,7 @@ void arm_cpu_realize(ARMCPU *cpu)
if (arm_feature(env, ARM_FEATURE_V7)) {
set_feature(env, ARM_FEATURE_VAPA);
set_feature(env, ARM_FEATURE_THUMB2);
set_feature(env, ARM_FEATURE_MPIDR);
if (!arm_feature(env, ARM_FEATURE_M)) {
set_feature(env, ARM_FEATURE_V6K);
} else {
@ -176,6 +192,8 @@ void arm_cpu_realize(ARMCPU *cpu)
if (arm_feature(env, ARM_FEATURE_VFP3)) {
set_feature(env, ARM_FEATURE_VFP);
}
register_cp_regs_for_features(cpu);
}
/* CPU models */
@ -185,7 +203,9 @@ static void arm926_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_VFP);
cpu->midr = ARM_CPUID_ARM926;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
cpu->midr = 0x41069265;
cpu->reset_fpsid = 0x41011090;
cpu->ctr = 0x1dd20d2;
cpu->reset_sctlr = 0x00090078;
@ -196,7 +216,8 @@ static void arm946_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_MPU);
cpu->midr = ARM_CPUID_ARM946;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x41059461;
cpu->ctr = 0x0f004006;
cpu->reset_sctlr = 0x00000078;
}
@ -207,10 +228,23 @@ static void arm1026_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_AUXCR);
cpu->midr = ARM_CPUID_ARM1026;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
cpu->midr = 0x4106a262;
cpu->reset_fpsid = 0x410110a0;
cpu->ctr = 0x1dd20d2;
cpu->reset_sctlr = 0x00090078;
cpu->reset_auxcr = 1;
{
/* The 1026 had an IFAR at c6,c0,0,1 rather than the ARMv6 c6,c0,0,2 */
ARMCPRegInfo ifar = {
.name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c6_insn),
.resetvalue = 0
};
define_one_arm_cp_reg(cpu, &ifar);
}
}
static void arm1136_r2_initfn(Object *obj)
@ -225,7 +259,10 @@ static void arm1136_r2_initfn(Object *obj)
*/
set_feature(&cpu->env, ARM_FEATURE_V6);
set_feature(&cpu->env, ARM_FEATURE_VFP);
cpu->midr = ARM_CPUID_ARM1136_R2;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
cpu->midr = 0x4107b362;
cpu->reset_fpsid = 0x410120b4;
cpu->mvfr0 = 0x11111111;
cpu->mvfr1 = 0x00000000;
@ -243,6 +280,7 @@ static void arm1136_r2_initfn(Object *obj)
cpu->id_isar2 = 0x11231111;
cpu->id_isar3 = 0x01102131;
cpu->id_isar4 = 0x141;
cpu->reset_auxcr = 7;
}
static void arm1136_initfn(Object *obj)
@ -251,7 +289,10 @@ static void arm1136_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V6K);
set_feature(&cpu->env, ARM_FEATURE_V6);
set_feature(&cpu->env, ARM_FEATURE_VFP);
cpu->midr = ARM_CPUID_ARM1136;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
cpu->midr = 0x4117b363;
cpu->reset_fpsid = 0x410120b4;
cpu->mvfr0 = 0x11111111;
cpu->mvfr1 = 0x00000000;
@ -269,6 +310,7 @@ static void arm1136_initfn(Object *obj)
cpu->id_isar2 = 0x11231111;
cpu->id_isar3 = 0x01102131;
cpu->id_isar4 = 0x141;
cpu->reset_auxcr = 7;
}
static void arm1176_initfn(Object *obj)
@ -277,7 +319,10 @@ static void arm1176_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V6K);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_VAPA);
cpu->midr = ARM_CPUID_ARM1176;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
cpu->midr = 0x410fb767;
cpu->reset_fpsid = 0x410120b5;
cpu->mvfr0 = 0x11111111;
cpu->mvfr1 = 0x00000000;
@ -295,6 +340,7 @@ static void arm1176_initfn(Object *obj)
cpu->id_isar2 = 0x11231121;
cpu->id_isar3 = 0x01102131;
cpu->id_isar4 = 0x01141;
cpu->reset_auxcr = 7;
}
static void arm11mpcore_initfn(Object *obj)
@ -303,11 +349,13 @@ static void arm11mpcore_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V6K);
set_feature(&cpu->env, ARM_FEATURE_VFP);
set_feature(&cpu->env, ARM_FEATURE_VAPA);
cpu->midr = ARM_CPUID_ARM11MPCORE;
set_feature(&cpu->env, ARM_FEATURE_MPIDR);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x410fb022;
cpu->reset_fpsid = 0x410120b4;
cpu->mvfr0 = 0x11111111;
cpu->mvfr1 = 0x00000000;
cpu->ctr = 0x1dd20d2;
cpu->ctr = 0x1d192992; /* 32K icache 32K dcache */
cpu->id_pfr0 = 0x111;
cpu->id_pfr1 = 0x1;
cpu->id_dfr0 = 0;
@ -320,6 +368,7 @@ static void arm11mpcore_initfn(Object *obj)
cpu->id_isar2 = 0x11221011;
cpu->id_isar3 = 0x01102131;
cpu->id_isar4 = 0x141;
cpu->reset_auxcr = 1;
}
static void cortex_m3_initfn(Object *obj)
@ -327,9 +376,17 @@ static void cortex_m3_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_M);
cpu->midr = ARM_CPUID_CORTEXM3;
cpu->midr = 0x410fc231;
}
static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
{ .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
static void cortex_a8_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
@ -337,7 +394,8 @@ static void cortex_a8_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_VFP3);
set_feature(&cpu->env, ARM_FEATURE_NEON);
set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
cpu->midr = ARM_CPUID_CORTEXA8;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x410fc080;
cpu->reset_fpsid = 0x410330c0;
cpu->mvfr0 = 0x11110222;
cpu->mvfr1 = 0x00011100;
@ -360,8 +418,39 @@ static void cortex_a8_initfn(Object *obj)
cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */
cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */
cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
cpu->reset_auxcr = 2;
define_arm_cp_regs(cpu, cortexa8_cp_reginfo);
}
static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
/* power_control should be set to maximum latency. Again,
* default to 0 and set by private hook
*/
{ .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
{ .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
{ .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
{ .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
/* TLB lockdown control */
{ .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
.access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
{ .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
.access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
{ .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
.access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
{ .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
.access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
{ .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
.access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
REGINFO_SENTINEL
};
static void cortex_a9_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
@ -375,7 +464,7 @@ static void cortex_a9_initfn(Object *obj)
* and valid configurations; we don't model A9UP).
*/
set_feature(&cpu->env, ARM_FEATURE_V7MP);
cpu->midr = ARM_CPUID_CORTEXA9;
cpu->midr = 0x410fc090;
cpu->reset_fpsid = 0x41033090;
cpu->mvfr0 = 0x11110222;
cpu->mvfr1 = 0x01111111;
@ -397,8 +486,40 @@ static void cortex_a9_initfn(Object *obj)
cpu->clidr = (1 << 27) | (1 << 24) | 3;
cpu->ccsidr[0] = 0xe00fe015; /* 16k L1 dcache. */
cpu->ccsidr[1] = 0x200fe015; /* 16k L1 icache. */
{
ARMCPRegInfo cbar = {
.name = "CBAR", .cp = 15, .crn = 15, .crm = 0, .opc1 = 4,
.opc2 = 0, .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar,
.fieldoffset = offsetof(CPUARMState, cp15.c15_config_base_address)
};
define_one_arm_cp_reg(cpu, &cbar);
define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
}
}
#ifndef CONFIG_USER_ONLY
static int a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t *value)
{
/* Linux wants the number of processors from here.
* Might as well set the interrupt-controller bit too.
*/
*value = ((smp_cpus - 1) << 24) | (1 << 23);
return 0;
}
#endif
static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
#ifndef CONFIG_USER_ONLY
{ .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
.access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read,
.writefn = arm_cp_write_ignore, },
#endif
{ .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
static void cortex_a15_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
@ -410,7 +531,8 @@ static void cortex_a15_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
set_feature(&cpu->env, ARM_FEATURE_V7MP);
set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
cpu->midr = ARM_CPUID_CORTEXA15;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x412fc0f1;
cpu->reset_fpsid = 0x410430f0;
cpu->mvfr0 = 0x10110222;
cpu->mvfr1 = 0x11111111;
@ -433,6 +555,7 @@ static void cortex_a15_initfn(Object *obj)
cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */
cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */
cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */
define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
}
static void ti925t_initfn(Object *obj)
@ -449,7 +572,8 @@ static void sa1100_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
cpu->midr = ARM_CPUID_SA1100;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x4401A11B;
cpu->reset_sctlr = 0x00000070;
}
@ -457,7 +581,8 @@ static void sa1110_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
cpu->midr = ARM_CPUID_SA1110;
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
cpu->midr = 0x6901B119;
cpu->reset_sctlr = 0x00000070;
}
@ -466,7 +591,7 @@ static void pxa250_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = ARM_CPUID_PXA250;
cpu->midr = 0x69052100;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -476,7 +601,7 @@ static void pxa255_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = ARM_CPUID_PXA255;
cpu->midr = 0x69052d00;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -486,7 +611,7 @@ static void pxa260_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = ARM_CPUID_PXA260;
cpu->midr = 0x69052903;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -496,7 +621,7 @@ static void pxa261_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = ARM_CPUID_PXA261;
cpu->midr = 0x69052d05;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -506,7 +631,7 @@ static void pxa262_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
cpu->midr = ARM_CPUID_PXA262;
cpu->midr = 0x69052d06;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -517,7 +642,7 @@ static void pxa270a0_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
cpu->midr = ARM_CPUID_PXA270_A0;
cpu->midr = 0x69054110;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -528,7 +653,7 @@ static void pxa270a1_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
cpu->midr = ARM_CPUID_PXA270_A1;
cpu->midr = 0x69054111;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -539,7 +664,7 @@ static void pxa270b0_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
cpu->midr = ARM_CPUID_PXA270_B0;
cpu->midr = 0x69054112;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -550,7 +675,7 @@ static void pxa270b1_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
cpu->midr = ARM_CPUID_PXA270_B1;
cpu->midr = 0x69054113;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -561,7 +686,7 @@ static void pxa270c0_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
cpu->midr = ARM_CPUID_PXA270_C0;
cpu->midr = 0x69054114;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -572,7 +697,7 @@ static void pxa270c5_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V5);
set_feature(&cpu->env, ARM_FEATURE_XSCALE);
set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
cpu->midr = ARM_CPUID_PXA270_C5;
cpu->midr = 0x69054117;
cpu->ctr = 0xd172172;
cpu->reset_sctlr = 0x00000078;
}
@ -587,7 +712,7 @@ static void arm_any_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
set_feature(&cpu->env, ARM_FEATURE_V7MP);
cpu->midr = ARM_CPUID_ANY;
cpu->midr = 0xffffffff;
}
typedef struct ARMCPUInfo {
@ -657,6 +782,7 @@ static const TypeInfo arm_cpu_type_info = {
.parent = TYPE_CPU,
.instance_size = sizeof(ARMCPU),
.instance_init = arm_cpu_initfn,
.instance_finalize = arm_cpu_finalizefn,
.abstract = true,
.class_size = sizeof(ARMCPUClass),
.class_init = arm_cpu_class_init,

248
target-arm/cpu.h
View File

@ -107,12 +107,7 @@ typedef struct CPUARMState {
/* System control coprocessor (cp15) */
struct {
uint32_t c0_cpuid;
uint32_t c0_cachetype;
uint32_t c0_ccsid[16]; /* Cache size. */
uint32_t c0_clid; /* Cache level. */
uint32_t c0_cssel; /* Cache size selection. */
uint32_t c0_c1[8]; /* Feature registers. */
uint32_t c0_c2[8]; /* Instruction set registers. */
uint32_t c1_sys; /* System control register. */
uint32_t c1_coproc; /* Coprocessor access register. */
uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */
@ -228,12 +223,6 @@ typedef struct CPUARMState {
/* Internal CPU feature flags. */
uint32_t features;
/* Coprocessor IO used by peripherals */
struct {
ARMReadCPFunc *cp_read;
ARMWriteCPFunc *cp_write;
void *opaque;
} cp[15];
void *nvic;
const struct arm_boot_info *boot_info;
} CPUARMState;
@ -392,6 +381,11 @@ enum arm_features {
ARM_FEATURE_VFP4, /* VFPv4 (implies that NEON is v2) */
ARM_FEATURE_GENERIC_TIMER,
ARM_FEATURE_MVFR, /* Media and VFP Feature Registers 0 and 1 */
ARM_FEATURE_DUMMY_C15_REGS, /* RAZ/WI all of cp15 crn=15 */
ARM_FEATURE_CACHE_TEST_CLEAN, /* 926/1026 style test-and-clean ops */
ARM_FEATURE_CACHE_DIRTY_REG, /* 1136/1176 cache dirty status register */
ARM_FEATURE_CACHE_BLOCK_OPS, /* v6 optional cache block operations */
ARM_FEATURE_MPIDR, /* has cp15 MPIDR */
};
static inline int arm_feature(CPUARMState *env, int feature)
@ -406,45 +400,215 @@ void armv7m_nvic_set_pending(void *opaque, int irq);
int armv7m_nvic_acknowledge_irq(void *opaque);
void armv7m_nvic_complete_irq(void *opaque, int irq);
void cpu_arm_set_cp_io(CPUARMState *env, int cpnum,
ARMReadCPFunc *cp_read, ARMWriteCPFunc *cp_write,
void *opaque);
/* Interface for defining coprocessor registers.
* Registers are defined in tables of arm_cp_reginfo structs
* which are passed to define_arm_cp_regs().
*/
/* When looking up a coprocessor register we look for it
* via an integer which encodes all of:
* coprocessor number
* Crn, Crm, opc1, opc2 fields
* 32 or 64 bit register (ie is it accessed via MRC/MCR
* or via MRRC/MCRR?)
* We allow 4 bits for opc1 because MRRC/MCRR have a 4 bit field.
* (In this case crn and opc2 should be zero.)
*/
#define ENCODE_CP_REG(cp, is64, crn, crm, opc1, opc2) \
(((cp) << 16) | ((is64) << 15) | ((crn) << 11) | \
((crm) << 7) | ((opc1) << 3) | (opc2))
#define DECODE_CPREG_CRN(enc) (((enc) >> 7) & 0xf)
/* ARMCPRegInfo type field bits. If the SPECIAL bit is set this is a
* special-behaviour cp reg and bits [15..8] indicate what behaviour
* it has. Otherwise it is a simple cp reg, where CONST indicates that
* TCG can assume the value to be constant (ie load at translate time)
* and 64BIT indicates a 64 bit wide coprocessor register. SUPPRESS_TB_END
* indicates that the TB should not be ended after a write to this register
* (the default is that the TB ends after cp writes). OVERRIDE permits
* a register definition to override a previous definition for the
* same (cp, is64, crn, crm, opc1, opc2) tuple: either the new or the
* old must have the OVERRIDE bit set.
*/
#define ARM_CP_SPECIAL 1
#define ARM_CP_CONST 2
#define ARM_CP_64BIT 4
#define ARM_CP_SUPPRESS_TB_END 8
#define ARM_CP_OVERRIDE 16
#define ARM_CP_NOP (ARM_CP_SPECIAL | (1 << 8))
#define ARM_CP_WFI (ARM_CP_SPECIAL | (2 << 8))
#define ARM_LAST_SPECIAL ARM_CP_WFI
/* Used only as a terminator for ARMCPRegInfo lists */
#define ARM_CP_SENTINEL 0xffff
/* Mask of only the flag bits in a type field */
#define ARM_CP_FLAG_MASK 0x1f
/* Return true if cptype is a valid type field. This is used to try to
* catch errors where the sentinel has been accidentally left off the end
* of a list of registers.
*/
static inline bool cptype_valid(int cptype)
{
return ((cptype & ~ARM_CP_FLAG_MASK) == 0)
|| ((cptype & ARM_CP_SPECIAL) &&
(cptype <= ARM_LAST_SPECIAL));
}
/* Access rights:
* We define bits for Read and Write access for what rev C of the v7-AR ARM ARM
* defines as PL0 (user), PL1 (fiq/irq/svc/abt/und/sys, ie privileged), and
* PL2 (hyp). The other level which has Read and Write bits is Secure PL1
* (ie any of the privileged modes in Secure state, or Monitor mode).
* If a register is accessible in one privilege level it's always accessible
* in higher privilege levels too. Since "Secure PL1" also follows this rule
* (ie anything visible in PL2 is visible in S-PL1, some things are only
* visible in S-PL1) but "Secure PL1" is a bit of a mouthful, we bend the
* terminology a little and call this PL3.
*
* If access permissions for a register are more complex than can be
* described with these bits, then use a laxer set of restrictions, and
* do the more restrictive/complex check inside a helper function.
*/
#define PL3_R 0x80
#define PL3_W 0x40
#define PL2_R (0x20 | PL3_R)
#define PL2_W (0x10 | PL3_W)
#define PL1_R (0x08 | PL2_R)
#define PL1_W (0x04 | PL2_W)
#define PL0_R (0x02 | PL1_R)
#define PL0_W (0x01 | PL1_W)
#define PL3_RW (PL3_R | PL3_W)
#define PL2_RW (PL2_R | PL2_W)
#define PL1_RW (PL1_R | PL1_W)
#define PL0_RW (PL0_R | PL0_W)
static inline int arm_current_pl(CPUARMState *env)
{
if ((env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR) {
return 0;
}
/* We don't currently implement the Virtualization or TrustZone
* extensions, so PL2 and PL3 don't exist for us.
*/
return 1;
}
typedef struct ARMCPRegInfo ARMCPRegInfo;
/* Access functions for coprocessor registers. These should return
* 0 on success, or one of the EXCP_* constants if access should cause
* an exception (in which case *value is not written).
*/
typedef int CPReadFn(CPUARMState *env, const ARMCPRegInfo *opaque,
uint64_t *value);
typedef int CPWriteFn(CPUARMState *env, const ARMCPRegInfo *opaque,
uint64_t value);
/* Hook function for register reset */
typedef void CPResetFn(CPUARMState *env, const ARMCPRegInfo *opaque);
#define CP_ANY 0xff
/* Definition of an ARM coprocessor register */
struct ARMCPRegInfo {
/* Name of register (useful mainly for debugging, need not be unique) */
const char *name;
/* Location of register: coprocessor number and (crn,crm,opc1,opc2)
* tuple. Any of crm, opc1 and opc2 may be CP_ANY to indicate a
* 'wildcard' field -- any value of that field in the MRC/MCR insn
* will be decoded to this register. The register read and write
* callbacks will be passed an ARMCPRegInfo with the crn/crm/opc1/opc2
* used by the program, so it is possible to register a wildcard and
* then behave differently on read/write if necessary.
* For 64 bit registers, only crm and opc1 are relevant; crn and opc2
* must both be zero.
*/
uint8_t cp;
uint8_t crn;
uint8_t crm;
uint8_t opc1;
uint8_t opc2;
/* Register type: ARM_CP_* bits/values */
int type;
/* Access rights: PL*_[RW] */
int access;
/* The opaque pointer passed to define_arm_cp_regs_with_opaque() when
* this register was defined: can be used to hand data through to the
* register read/write functions, since they are passed the ARMCPRegInfo*.
*/
void *opaque;
/* Value of this register, if it is ARM_CP_CONST. Otherwise, if
* fieldoffset is non-zero, the reset value of the register.
*/
uint64_t resetvalue;
/* Offset of the field in CPUARMState for this register. This is not
* needed if either:
* 1. type is ARM_CP_CONST or one of the ARM_CP_SPECIALs
* 2. both readfn and writefn are specified
*/
ptrdiff_t fieldoffset; /* offsetof(CPUARMState, field) */
/* Function for handling reads of this register. If NULL, then reads
* will be done by loading from the offset into CPUARMState specified
* by fieldoffset.
*/
CPReadFn *readfn;
/* Function for handling writes of this register. If NULL, then writes
* will be done by writing to the offset into CPUARMState specified
* by fieldoffset.
*/
CPWriteFn *writefn;
/* Function for resetting the register. If NULL, then reset will be done
* by writing resetvalue to the field specified in fieldoffset. If
* fieldoffset is 0 then no reset will be done.
*/
CPResetFn *resetfn;
};
/* Macros which are lvalues for the field in CPUARMState for the
* ARMCPRegInfo *ri.
*/
#define CPREG_FIELD32(env, ri) \
(*(uint32_t *)((char *)(env) + (ri)->fieldoffset))
#define CPREG_FIELD64(env, ri) \
(*(uint64_t *)((char *)(env) + (ri)->fieldoffset))
#define REGINFO_SENTINEL { .type = ARM_CP_SENTINEL }
void define_arm_cp_regs_with_opaque(ARMCPU *cpu,
const ARMCPRegInfo *regs, void *opaque);
void define_one_arm_cp_reg_with_opaque(ARMCPU *cpu,
const ARMCPRegInfo *regs, void *opaque);
static inline void define_arm_cp_regs(ARMCPU *cpu, const ARMCPRegInfo *regs)
{
define_arm_cp_regs_with_opaque(cpu, regs, 0);
}
static inline void define_one_arm_cp_reg(ARMCPU *cpu, const ARMCPRegInfo *regs)
{
define_one_arm_cp_reg_with_opaque(cpu, regs, 0);
}
const ARMCPRegInfo *get_arm_cp_reginfo(ARMCPU *cpu, uint32_t encoded_cp);
/* CPWriteFn that can be used to implement writes-ignored behaviour */
int arm_cp_write_ignore(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value);
/* CPReadFn that can be used for read-as-zero behaviour */
int arm_cp_read_zero(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t *value);
static inline bool cp_access_ok(CPUARMState *env,
const ARMCPRegInfo *ri, int isread)
{
return (ri->access >> ((arm_current_pl(env) * 2) + isread)) & 1;
}
/* Does the core conform to the the "MicroController" profile. e.g. Cortex-M3.
Note the M in older cores (eg. ARM7TDMI) stands for Multiply. These are
conventional cores (ie. Application or Realtime profile). */
#define IS_M(env) arm_feature(env, ARM_FEATURE_M)
#define ARM_CPUID(env) (env->cp15.c0_cpuid)
#define ARM_CPUID_ARM1026 0x4106a262
#define ARM_CPUID_ARM926 0x41069265
#define ARM_CPUID_ARM946 0x41059461
#define ARM_CPUID_TI915T 0x54029152
#define ARM_CPUID_TI925T 0x54029252
#define ARM_CPUID_SA1100 0x4401A11B
#define ARM_CPUID_SA1110 0x6901B119
#define ARM_CPUID_PXA250 0x69052100
#define ARM_CPUID_PXA255 0x69052d00
#define ARM_CPUID_PXA260 0x69052903
#define ARM_CPUID_PXA261 0x69052d05
#define ARM_CPUID_PXA262 0x69052d06
#define ARM_CPUID_PXA270 0x69054110
#define ARM_CPUID_PXA270_A0 0x69054110
#define ARM_CPUID_PXA270_A1 0x69054111
#define ARM_CPUID_PXA270_B0 0x69054112
#define ARM_CPUID_PXA270_B1 0x69054113
#define ARM_CPUID_PXA270_C0 0x69054114
#define ARM_CPUID_PXA270_C5 0x69054117
#define ARM_CPUID_ARM1136 0x4117b363
#define ARM_CPUID_ARM1136_R2 0x4107b362
#define ARM_CPUID_ARM1176 0x410fb767
#define ARM_CPUID_ARM11MPCORE 0x410fb022
#define ARM_CPUID_CORTEXA8 0x410fc080
#define ARM_CPUID_CORTEXA9 0x410fc090
#define ARM_CPUID_CORTEXA15 0x412fc0f1
#define ARM_CPUID_CORTEXM3 0x410fc231
#define ARM_CPUID_ANY 0xffffffff
#if defined(CONFIG_USER_ONLY)
#define TARGET_PAGE_BITS 12
@ -472,7 +636,7 @@ static inline CPUARMState *cpu_init(const char *cpu_model)
#define cpu_signal_handler cpu_arm_signal_handler
#define cpu_list arm_cpu_list
#define CPU_SAVE_VERSION 6
#define CPU_SAVE_VERSION 7
/* MMU modes definitions */
#define MMU_MODE0_SUFFIX _kernel

2070
target-arm/helper.c
View File

File diff suppressed because it is too large Load Diff

11
target-arm/helper.h
View File

@ -59,11 +59,10 @@ DEF_HELPER_0(cpsr_read, i32)
DEF_HELPER_3(v7m_msr, void, env, i32, i32)
DEF_HELPER_2(v7m_mrs, i32, env, i32)
DEF_HELPER_3(set_cp15, void, env, i32, i32)
DEF_HELPER_2(get_cp15, i32, env, i32)
DEF_HELPER_3(set_cp, void, env, i32, i32)
DEF_HELPER_2(get_cp, i32, env, i32)
DEF_HELPER_3(set_cp_reg, void, env, ptr, i32)
DEF_HELPER_2(get_cp_reg, i32, env, ptr)
DEF_HELPER_3(set_cp_reg64, void, env, ptr, i64)
DEF_HELPER_2(get_cp_reg64, i64, env, ptr)
DEF_HELPER_2(get_r13_banked, i32, env, i32)
DEF_HELPER_3(set_r13_banked, void, env, i32, i32)
@ -459,8 +458,6 @@ DEF_HELPER_3(iwmmxt_muladdsl, i64, i64, i32, i32)
DEF_HELPER_3(iwmmxt_muladdsw, i64, i64, i32, i32)
DEF_HELPER_3(iwmmxt_muladdswl, i64, i64, i32, i32)
DEF_HELPER_2(set_teecr, void, env, i32)
DEF_HELPER_3(neon_unzip8, void, env, i32, i32)
DEF_HELPER_3(neon_unzip16, void, env, i32, i32)
DEF_HELPER_3(neon_qunzip8, void, env, i32, i32)

2
target-arm/machine.c
View File

@ -21,7 +21,6 @@ void cpu_save(QEMUFile *f, void *opaque)
qemu_put_be32(f, env->fiq_regs[i]);
}
qemu_put_be32(f, env->cp15.c0_cpuid);
qemu_put_be32(f, env->cp15.c0_cachetype);
qemu_put_be32(f, env->cp15.c0_cssel);
qemu_put_be32(f, env->cp15.c1_sys);
qemu_put_be32(f, env->cp15.c1_coproc);
@ -139,7 +138,6 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
env->fiq_regs[i] = qemu_get_be32(f);
}
env->cp15.c0_cpuid = qemu_get_be32(f);
env->cp15.c0_cachetype = qemu_get_be32(f);
env->cp15.c0_cssel = qemu_get_be32(f);
env->cp15.c1_sys = qemu_get_be32(f);
env->cp15.c1_coproc = qemu_get_be32(f);

42
target-arm/op_helper.c
View File

@ -23,13 +23,11 @@
#define SIGNBIT (uint32_t)0x80000000
#define SIGNBIT64 ((uint64_t)1 << 63)
#if !defined(CONFIG_USER_ONLY)
static void raise_exception(int tt)
{
env->exception_index = tt;
cpu_loop_exit(env);
}
#endif
uint32_t HELPER(neon_tbl)(uint32_t ireg, uint32_t def,
uint32_t rn, uint32_t maxindex)
@ -287,6 +285,46 @@ void HELPER(set_user_reg)(uint32_t regno, uint32_t val)
}
}
void HELPER(set_cp_reg)(CPUARMState *env, void *rip, uint32_t value)
{
const ARMCPRegInfo *ri = rip;
int excp = ri->writefn(env, ri, value);
if (excp) {
raise_exception(excp);
}
}
uint32_t HELPER(get_cp_reg)(CPUARMState *env, void *rip)
{
const ARMCPRegInfo *ri = rip;
uint64_t value;
int excp = ri->readfn(env, ri, &value);
if (excp) {
raise_exception(excp);
}
return value;
}
void HELPER(set_cp_reg64)(CPUARMState *env, void *rip, uint64_t value)
{
const ARMCPRegInfo *ri = rip;
int excp = ri->writefn(env, ri, value);
if (excp) {
raise_exception(excp);
}
}
uint64_t HELPER(get_cp_reg64)(CPUARMState *env, void *rip)
{
const ARMCPRegInfo *ri = rip;
uint64_t value;
int excp = ri->readfn(env, ri, &value);
if (excp) {
raise_exception(excp);
}
return value;
}
/* ??? Flag setting arithmetic is awkward because we need to do comparisons.
The only way to do that in TCG is a conditional branch, which clobbers
all our temporaries. For now implement these as helper functions. */

474
target-arm/translate.c
View File

@ -2439,226 +2439,6 @@ static int disas_dsp_insn(CPUARMState *env, DisasContext *s, uint32_t insn)
return 1;
}
/* Disassemble system coprocessor instruction. Return nonzero if
instruction is not defined. */
static int disas_cp_insn(CPUARMState *env, DisasContext *s, uint32_t insn)
{
TCGv tmp, tmp2;
uint32_t rd = (insn >> 12) & 0xf;
uint32_t cp = (insn >> 8) & 0xf;
if (IS_USER(s)) {
return 1;
}
if (insn & ARM_CP_RW_BIT) {
if (!env->cp[cp].cp_read)
return 1;
gen_set_pc_im(s->pc);
tmp = tcg_temp_new_i32();
tmp2 = tcg_const_i32(insn);
gen_helper_get_cp(tmp, cpu_env, tmp2);
tcg_temp_free(tmp2);
store_reg(s, rd, tmp);
} else {
if (!env->cp[cp].cp_write)
return 1;
gen_set_pc_im(s->pc);
tmp = load_reg(s, rd);
tmp2 = tcg_const_i32(insn);
gen_helper_set_cp(cpu_env, tmp2, tmp);
tcg_temp_free(tmp2);
tcg_temp_free_i32(tmp);
}
return 0;
}
static int cp15_user_ok(CPUARMState *env, uint32_t insn)
{
int cpn = (insn >> 16) & 0xf;
int cpm = insn & 0xf;
int op = ((insn >> 5) & 7) | ((insn >> 18) & 0x38);
if (arm_feature(env, ARM_FEATURE_V7) && cpn == 9) {
/* Performance monitor registers fall into three categories:
* (a) always UNDEF in usermode
* (b) UNDEF only if PMUSERENR.EN is 0
* (c) always read OK and UNDEF on write (PMUSERENR only)
*/
if ((cpm == 12 && (op < 6)) ||
(cpm == 13 && (op < 3))) {
return env->cp15.c9_pmuserenr;
} else if (cpm == 14 && op == 0 && (insn & ARM_CP_RW_BIT)) {
/* PMUSERENR, read only */
return 1;
}
return 0;
}
if (cpn == 13 && cpm == 0) {
/* TLS register. */
if (op == 2 || (op == 3 && (insn & ARM_CP_RW_BIT)))
return 1;
}
return 0;
}
static int cp15_tls_load_store(CPUARMState *env, DisasContext *s, uint32_t insn, uint32_t rd)
{
TCGv tmp;
int cpn = (insn >> 16) & 0xf;
int cpm = insn & 0xf;
int op = ((insn >> 5) & 7) | ((insn >> 18) & 0x38);
if (!arm_feature(env, ARM_FEATURE_V6K))
return 0;
if (!(cpn == 13 && cpm == 0))
return 0;
if (insn & ARM_CP_RW_BIT) {
switch (op) {
case 2:
tmp = load_cpu_field(cp15.c13_tls1);
break;
case 3:
tmp = load_cpu_field(cp15.c13_tls2);
break;
case 4:
tmp = load_cpu_field(cp15.c13_tls3);
break;
default:
return 0;
}
store_reg(s, rd, tmp);
} else {
tmp = load_reg(s, rd);
switch (op) {
case 2:
store_cpu_field(tmp, cp15.c13_tls1);
break;
case 3:
store_cpu_field(tmp, cp15.c13_tls2);
break;
case 4:
store_cpu_field(tmp, cp15.c13_tls3);
break;
default:
tcg_temp_free_i32(tmp);
return 0;
}
}
return 1;
}
/* Disassemble system coprocessor (cp15) instruction. Return nonzero if
instruction is not defined. */
static int disas_cp15_insn(CPUARMState *env, DisasContext *s, uint32_t insn)
{
uint32_t rd;
TCGv tmp, tmp2;
/* M profile cores use memory mapped registers instead of cp15. */
if (arm_feature(env, ARM_FEATURE_M))
return 1;
if ((insn & (1 << 25)) == 0) {
if (insn & (1 << 20)) {
/* mrrc */
return 1;
}
/* mcrr. Used for block cache operations, so implement as no-op. */
return 0;
}
if ((insn & (1 << 4)) == 0) {
/* cdp */
return 1;
}
/* We special case a number of cp15 instructions which were used
* for things which are real instructions in ARMv7. This allows
* them to work in linux-user mode which doesn't provide functional
* get_cp15/set_cp15 helpers, and is more efficient anyway.
*/
switch ((insn & 0x0fff0fff)) {
case 0x0e070f90:
/* 0,c7,c0,4: Standard v6 WFI (also used in some pre-v6 cores).
* In v7, this must NOP.
*/
if (IS_USER(s)) {
return 1;
}
if (!arm_feature(env, ARM_FEATURE_V7)) {
/* Wait for interrupt. */
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_WFI;
}
return 0;
case 0x0e070f58:
/* 0,c7,c8,2: Not all pre-v6 cores implemented this WFI,
* so this is slightly over-broad.
*/
if (!IS_USER(s) && !arm_feature(env, ARM_FEATURE_V6)) {
/* Wait for interrupt. */
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_WFI;
return 0;
}
/* Otherwise continue to handle via helper function.
* In particular, on v7 and some v6 cores this is one of
* the VA-PA registers.
*/
break;
case 0x0e070f3d:
/* 0,c7,c13,1: prefetch-by-MVA in v6, NOP in v7 */
if (arm_feature(env, ARM_FEATURE_V6)) {
return IS_USER(s) ? 1 : 0;
}
break;
case 0x0e070f95: /* 0,c7,c5,4 : ISB */
case 0x0e070f9a: /* 0,c7,c10,4: DSB */
case 0x0e070fba: /* 0,c7,c10,5: DMB */
/* Barriers in both v6 and v7 */
if (arm_feature(env, ARM_FEATURE_V6)) {
return 0;
}
break;
default:
break;
}
if (IS_USER(s) && !cp15_user_ok(env, insn)) {
return 1;
}
rd = (insn >> 12) & 0xf;
if (cp15_tls_load_store(env, s, insn, rd))
return 0;
tmp2 = tcg_const_i32(insn);
if (insn & ARM_CP_RW_BIT) {
tmp = tcg_temp_new_i32();
gen_helper_get_cp15(tmp, cpu_env, tmp2);
/* If the destination register is r15 then sets condition codes. */
if (rd != 15)
store_reg(s, rd, tmp);
else
tcg_temp_free_i32(tmp);
} else {
tmp = load_reg(s, rd);
gen_helper_set_cp15(cpu_env, tmp2, tmp);
tcg_temp_free_i32(tmp);
/* Normally we would always end the TB here, but Linux
* arch/arm/mach-pxa/sleep.S expects two instructions following
* an MMU enable to execute from cache. Imitate this behaviour. */
if (!arm_feature(env, ARM_FEATURE_XSCALE) ||
(insn & 0x0fff0fff) != 0x0e010f10)
gen_lookup_tb(s);
}
tcg_temp_free_i32(tmp2);
return 0;
}
#define VFP_REG_SHR(x, n) (((n) > 0) ? (x) >> (n) : (x) << -(n))
#define VFP_SREG(insn, bigbit, smallbit) \
((VFP_REG_SHR(insn, bigbit - 1) & 0x1e) | (((insn) >> (smallbit)) & 1))
@ -6388,104 +6168,18 @@ static int disas_neon_data_insn(CPUARMState * env, DisasContext *s, uint32_t ins
return 0;
}
static int disas_cp14_read(CPUARMState * env, DisasContext *s, uint32_t insn)
{
int crn = (insn >> 16) & 0xf;
int crm = insn & 0xf;
int op1 = (insn >> 21) & 7;
int op2 = (insn >> 5) & 7;
int rt = (insn >> 12) & 0xf;
TCGv tmp;
/* Minimal set of debug registers, since we don't support debug */
if (op1 == 0 && crn == 0 && op2 == 0) {
switch (crm) {
case 0:
/* DBGDIDR: just RAZ. In particular this means the
* "debug architecture version" bits will read as
* a reserved value, which should cause Linux to
* not try to use the debug hardware.
*/
tmp = tcg_const_i32(0);
store_reg(s, rt, tmp);
return 0;
case 1:
case 2:
/* DBGDRAR and DBGDSAR: v7 only. Always RAZ since we
* don't implement memory mapped debug components
*/
if (ENABLE_ARCH_7) {
tmp = tcg_const_i32(0);
store_reg(s, rt, tmp);
return 0;
}
break;
default:
break;
}
}
if (arm_feature(env, ARM_FEATURE_THUMB2EE)) {
if (op1 == 6 && crn == 0 && crm == 0 && op2 == 0) {
/* TEECR */
if (IS_USER(s))
return 1;
tmp = load_cpu_field(teecr);
store_reg(s, rt, tmp);
return 0;
}
if (op1 == 6 && crn == 1 && crm == 0 && op2 == 0) {
/* TEEHBR */
if (IS_USER(s) && (env->teecr & 1))
return 1;
tmp = load_cpu_field(teehbr);
store_reg(s, rt, tmp);
return 0;
}
}
return 1;
}
static int disas_cp14_write(CPUARMState * env, DisasContext *s, uint32_t insn)
{
int crn = (insn >> 16) & 0xf;
int crm = insn & 0xf;
int op1 = (insn >> 21) & 7;
int op2 = (insn >> 5) & 7;
int rt = (insn >> 12) & 0xf;
TCGv tmp;
if (arm_feature(env, ARM_FEATURE_THUMB2EE)) {
if (op1 == 6 && crn == 0 && crm == 0 && op2 == 0) {
/* TEECR */
if (IS_USER(s))
return 1;
tmp = load_reg(s, rt);
gen_helper_set_teecr(cpu_env, tmp);
tcg_temp_free_i32(tmp);
return 0;
}
if (op1 == 6 && crn == 1 && crm == 0 && op2 == 0) {
/* TEEHBR */
if (IS_USER(s) && (env->teecr & 1))
return 1;
tmp = load_reg(s, rt);
store_cpu_field(tmp, teehbr);
return 0;
}
}
return 1;
}
static int disas_coproc_insn(CPUARMState * env, DisasContext *s, uint32_t insn)
{
int cpnum;
int cpnum, is64, crn, crm, opc1, opc2, isread, rt, rt2;
const ARMCPRegInfo *ri;
ARMCPU *cpu = arm_env_get_cpu(env);
cpnum = (insn >> 8) & 0xf;
if (arm_feature(env, ARM_FEATURE_XSCALE)
&& ((env->cp15.c15_cpar ^ 0x3fff) & (1 << cpnum)))
return 1;
/* First check for coprocessor space used for actual instructions */
switch (cpnum) {
case 0:
case 1:
@ -6498,22 +6192,154 @@ static int disas_coproc_insn(CPUARMState * env, DisasContext *s, uint32_t insn)
case 10:
case 11:
return disas_vfp_insn (env, s, insn);
case 14:
/* Coprocessors 7-15 are architecturally reserved by ARM.
Unfortunately Intel decided to ignore this. */
if (arm_feature(env, ARM_FEATURE_XSCALE))
goto board;
if (insn & (1 << 20))
return disas_cp14_read(env, s, insn);
else
return disas_cp14_write(env, s, insn);
case 15:
return disas_cp15_insn (env, s, insn);
default:
board:
/* Unknown coprocessor. See if the board has hooked it. */
return disas_cp_insn (env, s, insn);
break;
}
/* Otherwise treat as a generic register access */
is64 = (insn & (1 << 25)) == 0;
if (!is64 && ((insn & (1 << 4)) == 0)) {
/* cdp */
return 1;
}
crm = insn & 0xf;
if (is64) {
crn = 0;
opc1 = (insn >> 4) & 0xf;
opc2 = 0;
rt2 = (insn >> 16) & 0xf;
} else {
crn = (insn >> 16) & 0xf;
opc1 = (insn >> 21) & 7;
opc2 = (insn >> 5) & 7;
rt2 = 0;
}
isread = (insn >> 20) & 1;
rt = (insn >> 12) & 0xf;
ri = get_arm_cp_reginfo(cpu,
ENCODE_CP_REG(cpnum, is64, crn, crm, opc1, opc2));
if (ri) {
/* Check access permissions */
if (!cp_access_ok(env, ri, isread)) {
return 1;
}
/* Handle special cases first */
switch (ri->type & ~(ARM_CP_FLAG_MASK & ~ARM_CP_SPECIAL)) {
case ARM_CP_NOP:
return 0;
case ARM_CP_WFI:
if (isread) {
return 1;
}
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_WFI;
break;
default:
break;
}
if (isread) {
/* Read */
if (is64) {
TCGv_i64 tmp64;
TCGv_i32 tmp;
if (ri->type & ARM_CP_CONST) {
tmp64 = tcg_const_i64(ri->resetvalue);
} else if (ri->readfn) {
TCGv_ptr tmpptr;
gen_set_pc_im(s->pc);
tmp64 = tcg_temp_new_i64();
tmpptr = tcg_const_ptr(ri);
gen_helper_get_cp_reg64(tmp64, cpu_env, tmpptr);
tcg_temp_free_ptr(tmpptr);
} else {
tmp64 = tcg_temp_new_i64();
tcg_gen_ld_i64(tmp64, cpu_env, ri->fieldoffset);
}
tmp = tcg_temp_new_i32();
tcg_gen_trunc_i64_i32(tmp, tmp64);
store_reg(s, rt, tmp);
tcg_gen_shri_i64(tmp64, tmp64, 32);
tcg_gen_trunc_i64_i32(tmp, tmp64);
store_reg(s, rt2, tmp);
} else {
TCGv tmp;
if (ri->type & ARM_CP_CONST) {
tmp = tcg_const_i32(ri->resetvalue);
} else if (ri->readfn) {
TCGv_ptr tmpptr;
gen_set_pc_im(s->pc);
tmp = tcg_temp_new_i32();
tmpptr = tcg_const_ptr(ri);
gen_helper_get_cp_reg(tmp, cpu_env, tmpptr);
tcg_temp_free_ptr(tmpptr);
} else {
tmp = load_cpu_offset(ri->fieldoffset);
}
if (rt == 15) {
/* Destination register of r15 for 32 bit loads sets
* the condition codes from the high 4 bits of the value
*/
gen_set_nzcv(tmp);
tcg_temp_free_i32(tmp);
} else {
store_reg(s, rt, tmp);
}
}
} else {
/* Write */
if (ri->type & ARM_CP_CONST) {
/* If not forbidden by access permissions, treat as WI */
return 0;
}
if (is64) {
TCGv tmplo, tmphi;
TCGv_i64 tmp64 = tcg_temp_new_i64();
tmplo = load_reg(s, rt);
tmphi = load_reg(s, rt2);
tcg_gen_concat_i32_i64(tmp64, tmplo, tmphi);
tcg_temp_free_i32(tmplo);
tcg_temp_free_i32(tmphi);
if (ri->writefn) {
TCGv_ptr tmpptr = tcg_const_ptr(ri);
gen_set_pc_im(s->pc);
gen_helper_set_cp_reg64(cpu_env, tmpptr, tmp64);
tcg_temp_free_ptr(tmpptr);
} else {
tcg_gen_st_i64(tmp64, cpu_env, ri->fieldoffset);
}
tcg_temp_free_i64(tmp64);
} else {
if (ri->writefn) {
TCGv tmp;
TCGv_ptr tmpptr;
gen_set_pc_im(s->pc);
tmp = load_reg(s, rt);
tmpptr = tcg_const_ptr(ri);
gen_helper_set_cp_reg(cpu_env, tmpptr, tmp);
tcg_temp_free_ptr(tmpptr);
tcg_temp_free_i32(tmp);
} else {
TCGv tmp = load_reg(s, rt);
store_cpu_offset(tmp, ri->fieldoffset);
}
}
/* We default to ending the TB on a coprocessor register write,
* but allow this to be suppressed by the register definition
* (usually only necessary to work around guest bugs).
*/
if (!(ri->type & ARM_CP_SUPPRESS_TB_END)) {
gen_lookup_tb(s);
}
}
return 0;
}
return 1;
}