diff options
Diffstat (limited to 'translate-all.c')
| -rw-r--r-- | translate-all.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/translate-all.c b/translate-all.c index 536008f52d..b6b0e1c098 100644 --- a/translate-all.c +++ b/translate-all.c @@ -1042,11 +1042,10 @@ TranslationBlock *tb_gen_code(CPUState *cpu, * access: the virtual CPU will exit the current TB if code is modified inside * this TB. */ -void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end, - int is_cpu_write_access) +void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end) { while (start < end) { - tb_invalidate_phys_page_range(start, end, is_cpu_write_access); + tb_invalidate_phys_page_range(start, end, 0); start &= TARGET_PAGE_MASK; start += TARGET_PAGE_SIZE; } @@ -1083,12 +1082,6 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end, if (!p) { return; } - if (!p->code_bitmap && - ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && - is_cpu_write_access) { - /* build code bitmap */ - build_page_bitmap(p); - } #if defined(TARGET_HAS_PRECISE_SMC) if (cpu != NULL) { env = cpu->env_ptr; @@ -1158,9 +1151,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end, /* if no code remaining, no need to continue to use slow writes */ if (!p->first_tb) { invalidate_page_bitmap(p); - if (is_cpu_write_access) { - tlb_unprotect_code_phys(cpu, start, cpu->mem_io_vaddr); - } + tlb_unprotect_code(start); } #endif #ifdef TARGET_HAS_PRECISE_SMC @@ -1193,6 +1184,11 @@ void tb_invalidate_phys_page_fast(tb_page_addr_t start, int len) if (!p) { return; } + if (!p->code_bitmap && + ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD) { + /* build code bitmap */ + build_page_bitmap(p); + } if (p->code_bitmap) { unsigned int nr; unsigned long b; @@ -1435,12 +1431,22 @@ void tb_check_watchpoint(CPUState *cpu) TranslationBlock *tb; tb = tb_find_pc(cpu->mem_io_pc); - if (!tb) { - cpu_abort(cpu, "check_watchpoint: could not find TB for pc=%p", - (void *)cpu->mem_io_pc); + if (tb) { + /* We can use retranslation to find the PC. */ + cpu_restore_state_from_tb(cpu, tb, cpu->mem_io_pc); + tb_phys_invalidate(tb, -1); + } else { + /* The exception probably happened in a helper. The CPU state should + have been saved before calling it. Fetch the PC from there. */ + CPUArchState *env = cpu->env_ptr; + target_ulong pc, cs_base; + tb_page_addr_t addr; + int flags; + + cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags); + addr = get_page_addr_code(env, pc); + tb_invalidate_phys_range(addr, addr + 1); } - cpu_restore_state_from_tb(cpu, tb, cpu->mem_io_pc); - tb_phys_invalidate(tb, -1); } #ifndef CONFIG_USER_ONLY |