static void gdb_vmm_translate(uint8_t *data, size_t len)
{
offset_t vaddr, paddr;
size_t psz, sz;
if(!gdb_get_number(data, len, (uint64_t*)&vaddr, 0))
{
gdb_nak();
return;
}
debug(GDBSTUB_CMD, "translating 0x%X\n", vaddr);
if(!__paging())
paddr = vaddr;
else if(!__pg_walk(info->vmm.ctrl.active_cr3, vaddr, &paddr, &psz, 1))
{
debug(GDBSTUB, "memory translation failure\n");
gdb_err_mem();
return;
}
debug(GDBSTUB_CMD, "sending 0x%X\n", paddr);
if(cpu_addr_sz() == 64)
sz = sizeof(uint64_t)*2;
else /* XXX: gdb seems to wait for 32 bits regs at least */
sz = sizeof(uint32_t)*2;
gdb_add_number(paddr, sz, 0);
gdb_send_packet();
}
int __vm_access_mem(vm_access_t *access)
{
offset_t vaddr, nxt;
size_t psz, len;
if(!access->len)
return 1;
if(!__paging())
return access->operator(access);
vaddr = access->addr;
len = access->len;
while(len)
{
if(!__pg_walk(access->cr3, vaddr, &access->addr, &psz, 1))
{
debug(VM_ACCESS, "#PF on vm access 0x%X sz 0x%X\n", vaddr, len);
return 0;
}
nxt = __align_next(vaddr, psz);
access->len = min(len, (nxt - vaddr));
if(!access->operator(access))
return 0;
len -= access->len;
vaddr = nxt;
}
return 1;
}
/*
** Resolve guest virtual into guest physical
*/
int vm_pg_walk(offset_t vaddr, offset_t *paddr, size_t *psz)
{
if(!__paging())
{
debug(VM, "walk while paging disabled !\n");
return 0;
}
return __pg_walk(&__cr3, vaddr, paddr, psz, 1);
}
