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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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9
linux-user/ppc/signal.c
View file

@ -243,9 +243,7 @@ static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
__put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
__put_user(cpu_read_xer(env), &frame->mc_gregs[TARGET_PT_XER]);
for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
ccr |= env->crf[i] << (32 - ((i + 1) * 4));
}
ccr = ppc_get_cr(env);
__put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
/* Save Altivec registers if necessary. */
@ -335,10 +333,7 @@ static void restore_user_regs(CPUPPCState *env,
cpu_write_xer(env, xer);
__get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf;
}
ppc_set_cr(env, ccr);
if (!sig) {
env->gpr[2] = save_r2;
}