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target-arm: Convert cp15 crn=13 registers 

Convert the cp15 crn=13 registers (FCSEIDR, CONTEXTIDR,
and the ARM946 Trace Process Identifier Register).

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 ecce5c3c90
commit 08de207bc5
1 changed files with 31 additions and 30 deletions
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61
target-arm/helper.c
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@ -63,6 +63,31 @@ static int dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
return 0;
}
static int fcse_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
if (env->cp15.c13_fcse != value) {
/* Unlike real hardware the qemu TLB uses virtual addresses,
* not modified virtual addresses, so this causes a TLB flush.
*/
tlb_flush(env, 1);
env->cp15.c13_fcse = value;
}
return 0;
}
static int contextidr_write(CPUARMState *env, const ARMCPRegInfo *ri,
uint64_t value)
{
if (env->cp15.c13_context != value && !arm_feature(env, ARM_FEATURE_MPU)) {
/* For VMSA (when not using the LPAE long descriptor page table
* format) this register includes the ASID, so do a TLB flush.
* For PMSA it is purely a process ID and no action is needed.
*/
tlb_flush(env, 1);
}
env->cp15.c13_context = value;
return 0;
}
static const ARMCPRegInfo cp_reginfo[] = {
/* DBGDIDR: just RAZ. In particular this means the "debug architecture
* version" bits will read as a reserved value, which should cause
@ -75,6 +100,12 @@ static const ARMCPRegInfo cp_reginfo[] = {
.crn = 3, .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c3),
.resetvalue = 0, .writefn = dacr_write },
{ .name = "FCSEIDR", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c13_fcse),
.resetvalue = 0, .writefn = fcse_write },
{ .name = "CONTEXTIDR", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c13_fcse),
.resetvalue = 0, .writefn = contextidr_write },
REGINFO_SENTINEL
};
@ -1769,27 +1800,6 @@ void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
break;
case 12: /* Reserved. */
goto bad_reg;
case 13: /* Process ID. */
switch (op2) {
case 0:
/* Unlike real hardware the qemu TLB uses virtual addresses,
not modified virtual addresses, so this causes a TLB flush.
*/
if (env->cp15.c13_fcse != val)
tlb_flush(env, 1);
env->cp15.c13_fcse = val;
break;
case 1:
/* This changes the ASID, so do a TLB flush. */
if (env->cp15.c13_context != val
&& !arm_feature(env, ARM_FEATURE_MPU))
tlb_flush(env, 0);
env->cp15.c13_context = val;
break;
default:
goto bad_reg;
}
break;
case 15: /* Implementation specific. */
if (arm_feature(env, ARM_FEATURE_XSCALE)) {
if (op2 == 0 && crm == 1) {
@ -2071,15 +2081,6 @@ uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
case 11: /* TCM DMA control. */
case 12: /* Reserved. */
goto bad_reg;
case 13: /* Process ID. */
switch (op2) {
case 0:
return env->cp15.c13_fcse;
case 1:
return env->cp15.c13_context;
default:
goto bad_reg;
}
case 15: /* Implementation specific. */
if (arm_feature(env, ARM_FEATURE_XSCALE)) {
if (op2 == 0 && crm == 1)