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target/hppa: Add pa2.0 cpu local tlb flushes

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The previous decoding misnamed the bit it called "local".
Other than the name, the implementation was correct for pa1.x.
Rename this field to "tlbe".

PA2.0 adds (a real) local bit to PxTLB, and also adds a range
of pages to flush in GR[b].

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Helge Deller 2023-10-26 21:41:41 -07:00 • committed by Richard Henderson
parent b5caa17cda
commit eb25d10f4d
5 changed files with 84 additions and 12 deletions
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26
target/hppa/mem_helper.c
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@ -448,16 +448,34 @@ void HELPER(iitlbt_pa20)(CPUHPPAState *env, target_ulong r1, target_ulong r2)
itlbt_pa20(env, r1, r2, va_b);
}
/* Purge (Insn/Data) TLB. This is explicitly page-based, and is
synchronous across all processors. */
/* Purge (Insn/Data) TLB. */
static void ptlb_work(CPUState *cpu, run_on_cpu_data data)
{
CPUHPPAState *env = cpu_env(cpu);
target_ulong addr = (target_ulong) data.target_ptr;
vaddr start = data.target_ptr;
vaddr end;
hppa_flush_tlb_range(env, addr, addr);
/*
* PA2.0 allows a range of pages encoded into GR[b], which we have
* copied into the bottom bits of the otherwise page-aligned address.
* PA1.x will always provide zero here, for a single page flush.
*/
end = start & 0xf;
start &= TARGET_PAGE_MASK;
end = TARGET_PAGE_SIZE << (2 * end);
end = start + end - 1;
hppa_flush_tlb_range(env, start, end);
}
/* This is local to the current cpu. */
void HELPER(ptlb_l)(CPUHPPAState *env, target_ulong addr)
{
trace_hppa_tlb_ptlb_local(env);
ptlb_work(env_cpu(env), RUN_ON_CPU_TARGET_PTR(addr));
}
/* This is synchronous across all processors. */
void HELPER(ptlb)(CPUHPPAState *env, target_ulong addr)
{
CPUState *src = env_cpu(env);