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Differential D26035 Diff 83362 usr.sbin/bhyve/inout.c

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usr.sbin/bhyve/inout.c

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#include <machine/vmm_instruction_emul.h> #include <machine/vmm_instruction_emul.h>
#include <vmmapi.h> #include <vmmapi.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <assert.h> #include <assert.h>
#include "bhyverun.h" #include "bhyverun.h"
#include "config.h"
#include "inout.h" #include "inout.h"
SET_DECLARE(inout_port_set, struct inout_port); SET_DECLARE(inout_port_set, struct inout_port);
#define MAX_IOPORTS (1 << 16) #define MAX_IOPORTS (1 << 16)
#define VERIFY_IOPORT(port, size) \ #define VERIFY_IOPORT(port, size) \
assert((port) >= 0 && (size) > 0 && ((port) + (size)) <= MAX_IOPORTS) assert((port) >= 0 && (size) > 0 && ((port) + (size)) <= MAX_IOPORTS)
Show All 39 Linesregister_default_iohandler(int start, int size)
iop.size = size; iop.size = size;
iop.flags = IOPORT_F_INOUT | IOPORT_F_DEFAULT; iop.flags = IOPORT_F_INOUT | IOPORT_F_DEFAULT;
iop.handler = default_inout; iop.handler = default_inout;
register_inout(&iop); register_inout(&iop);
} }
int int
emulate_inout(struct vmctx *ctx, int vcpu, struct vm_exit *vmexit, int strict) emulate_inout(struct vmctx *ctx, int vcpu, struct vm_exit *vmexit)
{ {
int addrsize, bytes, flags, in, port, prot, rep; int addrsize, bytes, flags, in, port, prot, rep;
uint32_t eax, val; uint32_t eax, val;
inout_func_t handler; inout_func_t handler;
void *arg; void *arg;
int error, fault, retval; int error, fault, retval;
enum vm_reg_name idxreg; enum vm_reg_name idxreg;
uint64_t gla, index, iterations, count; uint64_t gla, index, iterations, count;
struct vm_inout_str *vis; struct vm_inout_str *vis;
struct iovec iov[2]; struct iovec iov[2];
bytes = vmexit->u.inout.bytes; bytes = vmexit->u.inout.bytes;
in = vmexit->u.inout.in; in = vmexit->u.inout.in;
port = vmexit->u.inout.port; port = vmexit->u.inout.port;
assert(port < MAX_IOPORTS); assert(port < MAX_IOPORTS);
assert(bytes == 1 || bytes == 2 || bytes == 4); assert(bytes == 1 || bytes == 2 || bytes == 4);
handler = inout_handlers[port].handler; handler = inout_handlers[port].handler;
if (strict && handler == default_inout) if (handler == default_inout &&
get_config_bool_default("x86.strictio", false))
return (-1); return (-1);
flags = inout_handlers[port].flags; flags = inout_handlers[port].flags;
arg = inout_handlers[port].arg; arg = inout_handlers[port].arg;
if (in) { if (in) {
if (!(flags & IOPORT_F_IN)) if (!(flags & IOPORT_F_IN))
return (-1); return (-1);
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