On Fri, Jan 23, 2015 at 12:20 PM, Peter Maydell <peter.mayd...@linaro.org>
wrote:
> Instead of simply reusing ats_write() as the handler for both AArch32
> and AArch64 address translation operations, use a different function
> for each with the common code in a third function. This is necessary
> because the semantics for selecting the right translation regime are
> different; we are only getting away with sharing currently because
> we don't support EL2 and only support EL3 in AArch32.
>
> Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
> ---
> target-arm/helper.c | 33 ++++++++++++++++++++++++++-------
> 1 file changed, 26 insertions(+), 7 deletions(-)
>
> diff --git a/target-arm/helper.c b/target-arm/helper.c
> index 06478d8..04bc0a1 100644
> --- a/target-arm/helper.c
> +++ b/target-arm/helper.c
> @@ -1435,13 +1435,13 @@ static CPAccessResult ats_access(CPUARMState *env,
> const ARMCPRegInfo *ri)
> return CP_ACCESS_OK;
> }
>
> -static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t
> value)
> +static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
> + int access_type, int is_user)
> {
> hwaddr phys_addr;
> target_ulong page_size;
> int prot;
> - int ret, is_user = ri->opc2 & 2;
> - int access_type = ri->opc2 & 1;
> + int ret;
> uint64_t par64;
>
> ret = get_phys_addr(env, value, access_type, is_user,
> @@ -1481,9 +1481,28 @@ static void ats_write(CPUARMState *env, const
> ARMCPRegInfo *ri, uint64_t value)
> ((ret & 0xf) << 1) | 1;
> }
> }
> + return par64;
> +}
> +
> +static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t
> value)
> +{
> + int is_user = ri->opc2 & 2;
> + int access_type = ri->opc2 & 1;
> + uint64_t par64;
> +
> + par64 = do_ats_write(env, value, access_type, is_user);
>
> A32_BANKED_CURRENT_REG_SET(env, par, par64);
> }
> +
> +static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
> + uint64_t value)
> +{
> + int is_user = ri->opc2 & 2;
> + int access_type = ri->opc2 & 1;
> +
> + env->cp15.par_el[1] = do_ats_write(env, value, access_type, is_user);
> +}
> #endif
>
> static const ARMCPRegInfo vapa_cp_reginfo[] = {
> @@ -2257,16 +2276,16 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
> /* 64 bit address translation operations */
> { .name = "AT_S1E1R", .state = ARM_CP_STATE_AA64,
> .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 0,
> - .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write },
> + .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write64
> },
> { .name = "AT_S1E1W", .state = ARM_CP_STATE_AA64,
> .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 1,
> - .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write },
> + .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write64
> },
> { .name = "AT_S1E0R", .state = ARM_CP_STATE_AA64,
> .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 2,
> - .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write },
> + .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write64
> },
> { .name = "AT_S1E0W", .state = ARM_CP_STATE_AA64,
> .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 3,
> - .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write },
> + .access = PL1_W, .type = ARM_CP_NO_MIGRATE, .writefn = ats_write64
> },
> #endif
> /* TLB invalidate last level of translation table walk */
> { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3,
> .opc2 = 5,
> --
> 1.9.1
>
>
Reviewed-by: Greg Bellows <greg.bell...@linaro.org>
