diff options
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/kvm.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 5168a02ca7..4f437c221b 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -686,31 +686,12 @@ int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) } #ifdef KVM_CAP_SET_GUEST_DEBUG -static int kvm_patch_opcode_byte(CPUState *env, target_ulong addr, uint8_t val) -{ - target_phys_addr_t phys_page_addr; - unsigned long pd; - uint8_t *ptr; - - phys_page_addr = cpu_get_phys_page_debug(env, addr & TARGET_PAGE_MASK); - if (phys_page_addr == -1) - return -EINVAL; - - pd = cpu_get_physical_page_desc(phys_page_addr); - if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM && - (pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM && !(pd & IO_MEM_ROMD)) - return -EINVAL; - - ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) - + (addr & ~TARGET_PAGE_MASK); - *ptr = val; - return 0; -} - int kvm_arch_insert_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) { + const static uint8_t int3 = 0xcc; + if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 0) || - kvm_patch_opcode_byte(env, bp->pc, 0xcc)) + cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&int3, 1, 1)) return -EINVAL; return 0; } @@ -720,7 +701,7 @@ int kvm_arch_remove_sw_breakpoint(CPUState *env, struct kvm_sw_breakpoint *bp) uint8_t int3; if (cpu_memory_rw_debug(env, bp->pc, &int3, 1, 0) || int3 != 0xcc || - kvm_patch_opcode_byte(env, bp->pc, bp->saved_insn)) + cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) return -EINVAL; return 0; } |