diff options
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index f04e15eecd..59db883023 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -126,35 +126,30 @@ static void raw_write(CPUARMState *env, const ARMCPRegInfo *ri, } } -static bool read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t *v) +static uint64_t read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri) { - /* Raw read of a coprocessor register (as needed for migration, etc) - * return true on success, false if the read is impossible for some reason. - */ + /* Raw read of a coprocessor register (as needed for migration, etc). */ if (ri->type & ARM_CP_CONST) { - *v = ri->resetvalue; + return ri->resetvalue; } else if (ri->raw_readfn) { - *v = ri->raw_readfn(env, ri); + return ri->raw_readfn(env, ri); } else if (ri->readfn) { - *v = ri->readfn(env, ri); + return ri->readfn(env, ri); } else { - *v = raw_read(env, ri); + return raw_read(env, ri); } - return true; } -static bool write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri, +static void write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri, int64_t v) { /* Raw write of a coprocessor register (as needed for migration, etc). - * Return true on success, false if the write is impossible for some reason. * Note that constant registers are treated as write-ignored; the * caller should check for success by whether a readback gives the * value written. */ if (ri->type & ARM_CP_CONST) { - return true; + return; } else if (ri->raw_writefn) { ri->raw_writefn(env, ri, v); } else if (ri->writefn) { @@ -162,7 +157,6 @@ static bool write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri, } else { raw_write(env, ri, v); } - return true; } bool write_cpustate_to_list(ARMCPU *cpu) @@ -174,7 +168,7 @@ bool write_cpustate_to_list(ARMCPU *cpu) for (i = 0; i < cpu->cpreg_array_len; i++) { uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]); const ARMCPRegInfo *ri; - uint64_t v; + ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); if (!ri) { ok = false; @@ -183,11 +177,7 @@ bool write_cpustate_to_list(ARMCPU *cpu) if (ri->type & ARM_CP_NO_MIGRATE) { continue; } - if (!read_raw_cp_reg(&cpu->env, ri, &v)) { - ok = false; - continue; - } - cpu->cpreg_values[i] = v; + cpu->cpreg_values[i] = read_raw_cp_reg(&cpu->env, ri); } return ok; } @@ -200,7 +190,6 @@ bool write_list_to_cpustate(ARMCPU *cpu) for (i = 0; i < cpu->cpreg_array_len; i++) { uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]); uint64_t v = cpu->cpreg_values[i]; - uint64_t readback; const ARMCPRegInfo *ri; ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); @@ -215,9 +204,8 @@ bool write_list_to_cpustate(ARMCPU *cpu) * (to catch read-only registers and partially read-only * registers where the incoming migration value doesn't match) */ - if (!write_raw_cp_reg(&cpu->env, ri, v) || - !read_raw_cp_reg(&cpu->env, ri, &readback) || - readback != v) { + write_raw_cp_reg(&cpu->env, ri, v); + if (read_raw_cp_reg(&cpu->env, ri) != v) { ok = false; } } |