gwj / at91sam9263 · Commits

Commit 64bf3f4eec322cd0d179d4b50f3cfc11901bf235

Authored by aliguori
1 parent 5e2972fd

kvm: Drop kvm_patch_opcode_byte (Jan Kiszka) 

As cpu_memory_rw_debug is now capable of modifying ROM, we can drop our
own patch function.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6906 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 1 changed file with 4 additions and 23 deletions
target-i386/kvm.c
  View file @64bf3f4
... ... @@ -686,31 +686,12 @@ int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
686 686 }
687 687  
688 688 #ifdef KVM_CAP_SET_GUEST_DEBUG
689   -static int kvm_patch_opcode_byte(CPUState *env, target_ulong addr, uint8_t val)
690   -{
691   - target_phys_addr_t phys_page_addr;
692   - unsigned long pd;
693   - uint8_t *ptr;
694   -
695   - phys_page_addr = cpu_get_phys_page_debug(env, addr & TARGET_PAGE_MASK);
696   - if (phys_page_addr == -1)
697   - return -EINVAL;
698   -
699   - pd = cpu_get_physical_page_desc(phys_page_addr);
700   - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM &&
701   - (pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM && !(pd & IO_MEM_ROMD))
702   - return -EINVAL;
703   -
704   - ptr = phys_ram_base + (pd & TARGET_PAGE_MASK)
705   - + (addr & ~TARGET_PAGE_MASK);
706   - *ptr = val;
707   - return 0;
708   -}
709   -
710 689 int kvm_arch_insert_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp)
711 690 {
  691 + const static uint8_t int3 = 0xcc;
  692 +
712 693 if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 0) ||
713   - kvm_patch_opcode_byte(env, bp->pc, 0xcc))
  694 + cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&int3, 1, 1))
714 695 return -EINVAL;
715 696 return 0;
716 697 }
... ... @@ -720,7 +701,7 @@ int kvm_arch_remove_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp)
720 701 uint8_t int3;
721 702  
722 703 if (cpu_memory_rw_debug(env, bp->pc, &int3, 1, 0) || int3 != 0xcc ||
723   - kvm_patch_opcode_byte(env, bp->pc, bp->saved_insn))
  704 + cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1))
724 705 return -EINVAL;
725 706 return 0;
726 707 }
... ...