On 06/28/2018 09:15 PM, Richard Henderson wrote: > Leave ARM_CP_SVE, removing ARM_CP_FPU; the sve_access_check > produced by the flag already includes fp_access_check. If > we also check ARM_CP_FPU the double fp_access_check asserts.
Maybe we can surround this assert() with #ifdef DEBUG_DISAS... > Reported-by: Laurent Desnogues <laurent.desnog...@gmail.com> > Signed-off-by: Richard Henderson <richard.hender...@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org> > --- > target/arm/helper.c | 8 ++++---- > target/arm/translate-a64.c | 5 ++--- > 2 files changed, 6 insertions(+), 7 deletions(-) > > diff --git a/target/arm/helper.c b/target/arm/helper.c > index b19c7ace78..a855da045b 100644 > --- a/target/arm/helper.c > +++ b/target/arm/helper.c > @@ -4393,7 +4393,7 @@ static void zcr_write(CPUARMState *env, const > ARMCPRegInfo *ri, > static const ARMCPRegInfo zcr_el1_reginfo = { > .name = "ZCR_EL1", .state = ARM_CP_STATE_AA64, > .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 2, .opc2 = 0, > - .access = PL1_RW, .type = ARM_CP_SVE | ARM_CP_FPU, > + .access = PL1_RW, .type = ARM_CP_SVE, > .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[1]), > .writefn = zcr_write, .raw_writefn = raw_write > }; > @@ -4401,7 +4401,7 @@ static const ARMCPRegInfo zcr_el1_reginfo = { > static const ARMCPRegInfo zcr_el2_reginfo = { > .name = "ZCR_EL2", .state = ARM_CP_STATE_AA64, > .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 2, .opc2 = 0, > - .access = PL2_RW, .type = ARM_CP_SVE | ARM_CP_FPU, > + .access = PL2_RW, .type = ARM_CP_SVE, > .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[2]), > .writefn = zcr_write, .raw_writefn = raw_write > }; > @@ -4409,14 +4409,14 @@ static const ARMCPRegInfo zcr_el2_reginfo = { > static const ARMCPRegInfo zcr_no_el2_reginfo = { > .name = "ZCR_EL2", .state = ARM_CP_STATE_AA64, > .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 2, .opc2 = 0, > - .access = PL2_RW, .type = ARM_CP_SVE | ARM_CP_FPU, > + .access = PL2_RW, .type = ARM_CP_SVE, > .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore > }; > > static const ARMCPRegInfo zcr_el3_reginfo = { > .name = "ZCR_EL3", .state = ARM_CP_STATE_AA64, > .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 2, .opc2 = 0, > - .access = PL3_RW, .type = ARM_CP_SVE | ARM_CP_FPU, > + .access = PL3_RW, .type = ARM_CP_SVE, > .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[3]), > .writefn = zcr_write, .raw_writefn = raw_write > }; > diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c > index f986340832..45a6c2a3aa 100644 > --- a/target/arm/translate-a64.c > +++ b/target/arm/translate-a64.c > @@ -1633,11 +1633,10 @@ static void handle_sys(DisasContext *s, uint32_t > insn, bool isread, > default: > break; > } > - if ((ri->type & ARM_CP_SVE) && !sve_access_check(s)) { > - return; > - } > if ((ri->type & ARM_CP_FPU) && !fp_access_check(s)) { > return; > + } else if ((ri->type & ARM_CP_SVE) && !sve_access_check(s)) { > + return; > } > > if ((tb_cflags(s->base.tb) & CF_USE_ICOUNT) && (ri->type & ARM_CP_IO)) { >