gwj / at91sam9263 · Commits

Commit 34f715e754adad52939d7b187fec655ddf3e0ba8

Authored by bellard
1 parent cae61cef

fixed WP semantics 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@606 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 1 changed file with 3 additions and 3 deletions
target-i386/helper2.c
  View file @34f715e
... ... @@ -320,7 +320,7 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, uint32_t addr,
320 320 if (is_write && !(pde & PG_RW_MASK))
321 321 goto do_fault_protect;
322 322 } else {
323   - if ((env->cr[0] & CR0_WP_MASK) && (pde & PG_USER_MASK) &&
  323 + if ((env->cr[0] & CR0_WP_MASK) &&
324 324 is_write && !(pde & PG_RW_MASK))
325 325 goto do_fault_protect;
326 326 }
... ... @@ -358,7 +358,7 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, uint32_t addr,
358 358 if (is_write && !(ptep & PG_RW_MASK))
359 359 goto do_fault_protect;
360 360 } else {
361   - if ((env->cr[0] & CR0_WP_MASK) && (ptep & PG_USER_MASK) &&
  361 + if ((env->cr[0] & CR0_WP_MASK) &&
362 362 is_write && !(ptep & PG_RW_MASK))
363 363 goto do_fault_protect;
364 364 }
... ... @@ -382,7 +382,7 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, uint32_t addr,
382 382 if (ptep & PG_RW_MASK)
383 383 prot |= PROT_WRITE;
384 384 } else {
385   - if (!(env->cr[0] & CR0_WP_MASK) || !(ptep & PG_USER_MASK) ||
  385 + if (!(env->cr[0] & CR0_WP_MASK) ||
386 386 (ptep & PG_RW_MASK))
387 387 prot |= PROT_WRITE;
388 388 }
... ...