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target-arm: Convert cp15 crn=2 registers 

Convert the cp15 crn=2 registers (MMU page table control,
MPU cache control) to the new scheme.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2012-06-20 11:57:14 +00:00
parent 18032bec5c
commit ecce5c3c90
2 changed files with 33 additions and 56 deletions
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1
target-arm/cpu.c
View File

@ -131,7 +131,6 @@ static void arm_cpu_reset(CPUState *s)
}
}
env->vfp.xregs[ARM_VFP_FPEXC] = 0;
env->cp15.c2_base_mask = 0xffffc000u;
#endif
set_flush_to_zero(1, &env->vfp.standard_fp_status);
set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);

88
target-arm/helper.c
View File

@ -410,9 +410,32 @@ static const ARMCPRegInfo pmsav5_cp_reginfo[] = {
{ .name = "INSN_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 3,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c5_insn), .resetvalue = 0, },
{ .name = "DCACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c2_data), .resetvalue = 0, },
{ .name = "ICACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c2_insn), .resetvalue = 0, },
REGINFO_SENTINEL
};
static int vmsa_ttbcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
value &= 7;
env->cp15.c2_control = value;
env->cp15.c2_mask = ~(((uint32_t)0xffffffffu) >> value);
env->cp15.c2_base_mask = ~((uint32_t)0x3fffu >> value);
return 0;
}
static void vmsa_ttbcr_reset(CPUARMState *env, const ARMCPRegInfo *ri)
{
env->cp15.c2_base_mask = 0xffffc000u;
env->cp15.c2_control = 0;
env->cp15.c2_mask = 0;
}
static const ARMCPRegInfo vmsa_cp_reginfo[] = {
{ .name = "DFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
@ -420,6 +443,16 @@ static const ARMCPRegInfo vmsa_cp_reginfo[] = {
{ .name = "IFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c5_insn), .resetvalue = 0, },
{ .name = "TTBR0", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c2_base0), .resetvalue = 0, },
{ .name = "TTBR1", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.c2_base0), .resetvalue = 0, },
{ .name = "TTBCR", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL1_RW, .writefn = vmsa_ttbcr_write,
.resetfn = vmsa_ttbcr_reset,
.fieldoffset = offsetof(CPUARMState, cp15.c2_control) },
REGINFO_SENTINEL
};
@ -1609,37 +1642,6 @@ void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
goto bad_reg;
}
break;
case 2: /* MMU Page table control / MPU cache control. */
if (arm_feature(env, ARM_FEATURE_MPU)) {
switch (op2) {
case 0:
env->cp15.c2_data = val;
break;
case 1:
env->cp15.c2_insn = val;
break;
default:
goto bad_reg;
}
} else {
switch (op2) {
case 0:
env->cp15.c2_base0 = val;
break;
case 1:
env->cp15.c2_base1 = val;
break;
case 2:
val &= 7;
env->cp15.c2_control = val;
env->cp15.c2_mask = ~(((uint32_t)0xffffffffu) >> val);
env->cp15.c2_base_mask = ~((uint32_t)0x3fffu >> val);
break;
default:
goto bad_reg;
}
}
break;
case 4: /* Reserved. */
goto bad_reg;
case 6: /* MMU Fault address / MPU base/size. */
@ -1975,30 +1977,6 @@ uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
default:
goto bad_reg;
}
case 2: /* MMU Page table control / MPU cache control. */
if (arm_feature(env, ARM_FEATURE_MPU)) {
switch (op2) {
case 0:
return env->cp15.c2_data;
break;
case 1:
return env->cp15.c2_insn;
break;
default:
goto bad_reg;
}
} else {
switch (op2) {
case 0:
return env->cp15.c2_base0;
case 1:
return env->cp15.c2_base1;
case 2:
return env->cp15.c2_control;
default:
goto bad_reg;
}
}
case 4: /* Reserved. */
goto bad_reg;
case 6: /* MMU Fault address. */