diff options
Diffstat (limited to 'target/mips/tcg/sysemu/tlb_helper.c')
| -rw-r--r-- | target/mips/tcg/sysemu/tlb_helper.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/target/mips/tcg/sysemu/tlb_helper.c b/target/mips/tcg/sysemu/tlb_helper.c index e7be649b02..7dbc2e24c4 100644 --- a/target/mips/tcg/sysemu/tlb_helper.c +++ b/target/mips/tcg/sysemu/tlb_helper.c @@ -624,7 +624,7 @@ static uint64_t get_tlb_entry_layout(CPUMIPSState *env, uint64_t entry, static int walk_directory(CPUMIPSState *env, uint64_t *vaddr, int directory_index, bool *huge_page, bool *hgpg_directory_hit, uint64_t *pw_entrylo0, uint64_t *pw_entrylo1, - int directory_shift, int leaf_shift) + unsigned directory_shift, unsigned leaf_shift) { int dph = (env->CP0_PWCtl >> CP0PC_DPH) & 0x1; int psn = (env->CP0_PWCtl >> CP0PC_PSN) & 0x3F; @@ -730,21 +730,11 @@ static bool page_table_walk_refill(CPUMIPSState *env, vaddr address, /* Other HTW configs */ int hugepg = (env->CP0_PWCtl >> CP0PC_HUGEPG) & 0x1; - - /* HTW Shift values (depend on entry size) */ - int directory_shift = (ptew > 1) ? -1 : - (hugepg && (ptew == 1)) ? native_shift + 1 : native_shift; - int leaf_shift = (ptew > 1) ? -1 : - (ptew == 1) ? native_shift + 1 : native_shift; + unsigned directory_shift, leaf_shift; /* Offsets into tables */ - int goffset = gindex << directory_shift; - int uoffset = uindex << directory_shift; - int moffset = mindex << directory_shift; - int ptoffset0 = (ptindex >> 1) << (leaf_shift + 1); - int ptoffset1 = ptoffset0 | (1 << (leaf_shift)); - - uint32_t leafentry_size = 1 << (leaf_shift + 3); + unsigned goffset, uoffset, moffset, ptoffset0, ptoffset1; + uint32_t leafentry_size; /* Starting address - Page Table Base */ uint64_t vaddr = env->CP0_PWBase; @@ -766,10 +756,22 @@ static bool page_table_walk_refill(CPUMIPSState *env, vaddr address, /* no structure to walk */ return false; } - if ((directory_shift == -1) || (leaf_shift == -1)) { + if (ptew > 1) { return false; } + /* HTW Shift values (depend on entry size) */ + directory_shift = (hugepg && (ptew == 1)) ? native_shift + 1 : native_shift; + leaf_shift = (ptew == 1) ? native_shift + 1 : native_shift; + + goffset = gindex << directory_shift; + uoffset = uindex << directory_shift; + moffset = mindex << directory_shift; + ptoffset0 = (ptindex >> 1) << (leaf_shift + 1); + ptoffset1 = ptoffset0 | (1 << (leaf_shift)); + + leafentry_size = 1 << (leaf_shift + 3); + /* Global Directory */ if (gdw > 0) { vaddr |= goffset; |