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target/ppc: 6xx: Software TLB exceptions cleanup 

This code applies only to the 6xx CPUs, so we can remove the switch
statement.

Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220203200957.1434641-11-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
master
Fabiano Rosas 2022-02-09 09:08:55 +01:00 committed by Cédric Le Goater
parent 000ac49ad2
commit 8f8c7932d4
1 changed files with 11 additions and 20 deletions
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31
target/ppc/excp_helper.c
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@ -553,7 +553,6 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
int excp_model = env->excp_model;
target_ulong msr, new_msr, vector;
int srr0, srr1;
@ -695,26 +694,18 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
switch (excp_model) {
case POWERPC_EXCP_6xx:
/* Swap temporary saved registers with GPRs */
if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
new_msr |= (target_ulong)1 << MSR_TGPR;
hreg_swap_gpr_tgpr(env);
}
/* fall through */
case POWERPC_EXCP_7x5:
ppc_excp_debug_sw_tlb(env, excp);
msr |= env->crf[0] << 28;
msr |= env->error_code; /* key, D/I, S/L bits */
/* Set way using a LRU mechanism */
msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
break;
default:
cpu_abort(cs, "Invalid TLB miss exception\n");
break;
/* Swap temporary saved registers with GPRs */
if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
new_msr |= (target_ulong)1 << MSR_TGPR;
hreg_swap_gpr_tgpr(env);
}
ppc_excp_debug_sw_tlb(env, excp);
msr |= env->crf[0] << 28;
msr |= env->error_code; /* key, D/I, S/L bits */
/* Set way using a LRU mechanism */
msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
break;
case POWERPC_EXCP_FPA: /* Floating-point assist exception */
case POWERPC_EXCP_DABR: /* Data address breakpoint */