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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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18
hw/ppc/spapr_hcall.c
View file

@ -1566,8 +1566,6 @@ static target_ulong h_enter_nested(PowerPCCPU *cpu,
struct kvmppc_hv_guest_state hv_state;
struct kvmppc_pt_regs *regs;
hwaddr len;
uint64_t cr;
int i;
if (spapr->nested_ptcr == 0) {
return H_NOT_AVAILABLE;
@ -1616,12 +1614,7 @@ static target_ulong h_enter_nested(PowerPCCPU *cpu,
env->lr = regs->link;
env->ctr = regs->ctr;
cpu_write_xer(env, regs->xer);
cr = regs->ccr;
for (i = 7; i >= 0; i--) {
env->crf[i] = cr & 15;
cr >>= 4;
}
ppc_set_cr(env, regs->ccr);
env->msr = regs->msr;
env->nip = regs->nip;
@ -1698,8 +1691,6 @@ void spapr_exit_nested(PowerPCCPU *cpu, int excp)
struct kvmppc_hv_guest_state *hvstate;
struct kvmppc_pt_regs *regs;
hwaddr len;
uint64_t cr;
int i;
assert(spapr_cpu->in_nested);
@ -1757,12 +1748,7 @@ void spapr_exit_nested(PowerPCCPU *cpu, int excp)
regs->link = env->lr;
regs->ctr = env->ctr;
regs->xer = cpu_read_xer(env);
cr = 0;
for (i = 0; i < 8; i++) {
cr |= (env->crf[i] & 15) << (4 * (7 - i));
}
regs->ccr = cr;
regs->ccr = ppc_get_cr(env);
if (excp == POWERPC_EXCP_MCHECK ||
excp == POWERPC_EXCP_RESET ||