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target-ppc: Disentangle get_segment()

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The poorly named get_segment() function handles most of the address
translation logic for hash-based MMUs.  It has many ugly conditionals on
whether the MMU is 32-bit or 64-bit.

This patch splits the function into 32 and 64-bit versions, using the
switch on mmu_type that's already in the caller
(get_physical_address()) to select the right one.  Most of the
original function remains in mmu_helper.c to support the 6xx software
loaded TLB implementations (cleaning those up is a project for another
day).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
David Gibson 2013-03-12 00:31:09 +00:00 • committed by Alexander Graf
parent c69b6151e7
commit 0480884f14
5 changed files with 280 additions and 111 deletions
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5
target-ppc/mmu-hash64.h
View file

@ -4,11 +4,10 @@
#ifndef CONFIG_USER_ONLY
#ifdef TARGET_PPC64
ppc_slb_t *slb_lookup(CPUPPCState *env, target_ulong eaddr);
void dump_slb(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env);
int ppc_store_slb (CPUPPCState *env, target_ulong rb, target_ulong rs);
int find_pte64(CPUPPCState *env, mmu_ctx_t *ctx, int h,
int rw, int type, int target_page_bits);
int get_segment64(CPUPPCState *env, mmu_ctx_t *ctx,
target_ulong eaddr, int rw, int type);
#endif
#endif /* CONFIG_USER_ONLY */