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ppc: spapr: cleanup cr get/set with helpers.

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The bits in cr reg are grouped into eight 4-bit fields represented
by env->crf[8] and the related calculations should be abstracted to
keep the calling routines simpler to read. This is a step towards
cleaning up the related/calling code for better readability.

Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230503093619.2530487-2-harshpb@linux.ibm.com>
[danielhb: add 'const' modifier to fix linux-user build]
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Harsh Prateek Bora 2023-05-03 15:06:18 +05:30 • committed by Daniel Henrique Barboza
parent 1b336bb63e
commit 2060436aab
8 changed files with 31 additions and 60 deletions
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13
target/ppc/kvm.c
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@ -927,10 +927,7 @@ int kvm_arch_put_registers(CPUState *cs, int level)
regs.gpr[i] = env->gpr[i];
}
regs.cr = 0;
for (i = 0; i < 8; i++) {
regs.cr |= (env->crf[i] & 15) << (4 * (7 - i));
}
regs.cr = ppc_get_cr(env);
ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
if (ret < 0) {
@ -1205,7 +1202,6 @@ int kvm_arch_get_registers(CPUState *cs)
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
struct kvm_regs regs;
uint32_t cr;
int i, ret;
ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
@ -1213,12 +1209,7 @@ int kvm_arch_get_registers(CPUState *cs)
return ret;
}
cr = regs.cr;
for (i = 7; i >= 0; i--) {
env->crf[i] = cr & 15;
cr >>= 4;
}
ppc_set_cr(env, regs.cr);
env->ctr = regs.ctr;
env->lr = regs.lr;
cpu_write_xer(env, regs.xer);