From: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
Dereference it in the actual users.
This not only cleans up the emulator but also makes it easy to convert
the old emulation functions to the new em_xxx() form later.
Note: Remove some inline keywords to let the compiler decide inlining.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
---
arch/x86/include/asm/kvm_emulate.h | 3 +-
arch/x86/kvm/emulate.c | 259 ++++++++++++++++--------------------
arch/x86/kvm/x86.c | 2 +-
3 files changed, 118 insertions(+), 146 deletions(-)
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index 0049211..ab09ba2 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -373,6 +373,5 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt);
int emulator_task_switch(struct x86_emulate_ctxt *ctxt,
u16 tss_selector, int reason,
bool has_error_code, u32 error_code);
-int emulate_int_real(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int irq);
+int emulate_int_real(struct x86_emulate_ctxt *ctxt, int irq);
#endif /* _ASM_X86_KVM_X86_EMULATE_H */
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 614f3d8..4101245 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -473,13 +473,12 @@ static void set_seg_override(struct decode_cache *c, int seg)
c->seg_override = seg;
}
-static unsigned long seg_base(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int seg)
+static unsigned long seg_base(struct x86_emulate_ctxt *ctxt, int seg)
{
if (ctxt->mode == X86EMUL_MODE_PROT64 && seg < VCPU_SREG_FS)
return 0;
- return ops->get_cached_segment_base(ctxt, seg);
+ return ctxt->ops->get_cached_segment_base(ctxt, seg);
}
static unsigned seg_override(struct x86_emulate_ctxt *ctxt,
@@ -568,7 +567,7 @@ static int __linearize(struct x86_emulate_ctxt *ctxt,
u16 sel;
unsigned cpl, rpl;
- la = seg_base(ctxt, ctxt->ops, addr.seg) + addr.ea;
+ la = seg_base(ctxt, addr.seg) + addr.ea;
switch (ctxt->mode) {
case X86EMUL_MODE_REAL:
break;
@@ -1050,7 +1049,6 @@ static void fetch_bit_operand(struct decode_cache *c)
}
static int read_emulated(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
unsigned long addr, void *dest, unsigned size)
{
int rc;
@@ -1062,8 +1060,8 @@ static int read_emulated(struct x86_emulate_ctxt *ctxt,
if (mc->pos < mc->end)
goto read_cached;
- rc = ops->read_emulated(ctxt, addr, mc->data + mc->end, n,
- &ctxt->exception);
+ rc = ctxt->ops->read_emulated(ctxt, addr, mc->data + mc->end, n,
+ &ctxt->exception);
if (rc != X86EMUL_CONTINUE)
return rc;
mc->end += n;
@@ -1088,7 +1086,7 @@ static int segmented_read(struct x86_emulate_ctxt *ctxt,
rc = linearize(ctxt, addr, size, false, &linear);
if (rc != X86EMUL_CONTINUE)
return rc;
- return read_emulated(ctxt, ctxt->ops, linear, data, size);
+ return read_emulated(ctxt, linear, data, size);
}
static int segmented_write(struct x86_emulate_ctxt *ctxt,
@@ -1122,7 +1120,6 @@ static int segmented_cmpxchg(struct x86_emulate_ctxt *ctxt,
}
static int pio_in_emulated(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
unsigned int size, unsigned short port,
void *dest)
{
@@ -1141,7 +1138,7 @@ static int pio_in_emulated(struct x86_emulate_ctxt *ctxt,
if (n == 0)
n = 1;
rc->pos = rc->end = 0;
- if (!ops->pio_in_emulated(ctxt, size, port, rc->data, n))
+ if (!ctxt->ops->pio_in_emulated(ctxt, size, port, rc->data, n))
return 0;
rc->end = n * size;
}
@@ -1152,9 +1149,10 @@ static int pio_in_emulated(struct x86_emulate_ctxt *ctxt,
}
static void get_descriptor_table_ptr(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 selector, struct desc_ptr *dt)
{
+ struct x86_emulate_ops *ops = ctxt->ops;
+
if (selector & 1 << 2) {
struct desc_struct desc;
u16 sel;
@@ -1171,48 +1169,42 @@ static void get_descriptor_table_ptr(struct x86_emulate_ctxt *ctxt,
/* allowed just for 8 bytes segments */
static int read_segment_descriptor(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 selector, struct desc_struct *desc)
{
struct desc_ptr dt;
u16 index = selector >> 3;
- int ret;
ulong addr;
- get_descriptor_table_ptr(ctxt, ops, selector, &dt);
+ get_descriptor_table_ptr(ctxt, selector, &dt);
if (dt.size < index * 8 + 7)
return emulate_gp(ctxt, selector & 0xfffc);
- addr = dt.address + index * 8;
- ret = ops->read_std(ctxt, addr, desc, sizeof *desc, &ctxt->exception);
- return ret;
+ addr = dt.address + index * 8;
+ return ctxt->ops->read_std(ctxt, addr, desc, sizeof *desc,
+ &ctxt->exception);
}
/* allowed just for 8 bytes segments */
static int write_segment_descriptor(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 selector, struct desc_struct *desc)
{
struct desc_ptr dt;
u16 index = selector >> 3;
ulong addr;
- int ret;
- get_descriptor_table_ptr(ctxt, ops, selector, &dt);
+ get_descriptor_table_ptr(ctxt, selector, &dt);
if (dt.size < index * 8 + 7)
return emulate_gp(ctxt, selector & 0xfffc);
addr = dt.address + index * 8;
- ret = ops->write_std(ctxt, addr, desc, sizeof *desc, &ctxt->exception);
-
- return ret;
+ return ctxt->ops->write_std(ctxt, addr, desc, sizeof *desc,
+ &ctxt->exception);
}
/* Does not support long mode */
static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 selector, int seg)
{
struct desc_struct seg_desc;
@@ -1247,7 +1239,7 @@ static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
if (null_selector) /* for NULL selector skip all following checks */
goto load;
- ret = read_segment_descriptor(ctxt, ops, selector, &seg_desc);
+ ret = read_segment_descriptor(ctxt, selector, &seg_desc);
if (ret != X86EMUL_CONTINUE)
return ret;
@@ -1265,7 +1257,7 @@ static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
rpl = selector & 3;
dpl = seg_desc.dpl;
- cpl = ops->cpl(ctxt);
+ cpl = ctxt->ops->cpl(ctxt);
switch (seg) {
case VCPU_SREG_SS:
@@ -1316,12 +1308,12 @@ static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
if (seg_desc.s) {
/* mark segment as accessed */
seg_desc.type |= 1;
- ret = write_segment_descriptor(ctxt, ops, selector, &seg_desc);
+ ret = write_segment_descriptor(ctxt, selector, &seg_desc);
if (ret != X86EMUL_CONTINUE)
return ret;
}
load:
- ops->set_segment(ctxt, selector, &seg_desc, 0, seg);
+ ctxt->ops->set_segment(ctxt, selector, &seg_desc, 0, seg);
return X86EMUL_CONTINUE;
exception:
emulate_exception(ctxt, err_vec, err_code, true);
@@ -1422,13 +1414,12 @@ static int em_pop(struct x86_emulate_ctxt *ctxt)
}
static int emulate_popf(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
- void *dest, int len)
+ void *dest, int len)
{
int rc;
unsigned long val, change_mask;
int iopl = (ctxt->eflags & X86_EFLAGS_IOPL) >> IOPL_SHIFT;
- int cpl = ops->cpl(ctxt);
+ int cpl = ctxt->ops->cpl(ctxt);
rc = emulate_pop(ctxt, &val, len);
if (rc != X86EMUL_CONTINUE)
@@ -1469,11 +1460,10 @@ static int em_popf(struct x86_emulate_ctxt *ctxt)
c->dst.type = OP_REG;
c->dst.addr.reg = &ctxt->eflags;
c->dst.bytes = c->op_bytes;
- return emulate_popf(ctxt, ctxt->ops, &c->dst.val, c->op_bytes);
+ return emulate_popf(ctxt, &c->dst.val, c->op_bytes);
}
-static int emulate_push_sreg(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int seg)
+static int emulate_push_sreg(struct x86_emulate_ctxt *ctxt, int seg)
{
struct decode_cache *c = &ctxt->decode;
@@ -1482,8 +1472,7 @@ static int emulate_push_sreg(struct x86_emulate_ctxt *ctxt,
return em_push(ctxt);
}
-static int emulate_pop_sreg(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int seg)
+static int emulate_pop_sreg(struct x86_emulate_ctxt *ctxt, int seg)
{
struct decode_cache *c = &ctxt->decode;
unsigned long selector;
@@ -1493,7 +1482,7 @@ static int emulate_pop_sreg(struct x86_emulate_ctxt *ctxt,
if (rc != X86EMUL_CONTINUE)
return rc;
- rc = load_segment_descriptor(ctxt, ops, (u16)selector, seg);
+ rc = load_segment_descriptor(ctxt, (u16)selector, seg);
return rc;
}
@@ -1547,10 +1536,10 @@ static int em_popa(struct x86_emulate_ctxt *ctxt)
return rc;
}
-int emulate_int_real(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int irq)
+int emulate_int_real(struct x86_emulate_ctxt *ctxt, int irq)
{
struct decode_cache *c = &ctxt->decode;
+ struct x86_emulate_ops *ops = ctxt->ops;
int rc;
struct desc_ptr dt;
gva_t cs_addr;
@@ -1588,7 +1577,7 @@ int emulate_int_real(struct x86_emulate_ctxt *ctxt,
if (rc != X86EMUL_CONTINUE)
return rc;
- rc = load_segment_descriptor(ctxt, ops, cs, VCPU_SREG_CS);
+ rc = load_segment_descriptor(ctxt, cs, VCPU_SREG_CS);
if (rc != X86EMUL_CONTINUE)
return rc;
@@ -1597,12 +1586,11 @@ int emulate_int_real(struct x86_emulate_ctxt *ctxt,
return rc;
}
-static int emulate_int(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int irq)
+static int emulate_int(struct x86_emulate_ctxt *ctxt, int irq)
{
switch(ctxt->mode) {
case X86EMUL_MODE_REAL:
- return emulate_int_real(ctxt, ops, irq);
+ return emulate_int_real(ctxt, irq);
case X86EMUL_MODE_VM86:
case X86EMUL_MODE_PROT16:
case X86EMUL_MODE_PROT32:
@@ -1613,8 +1601,7 @@ static int emulate_int(struct x86_emulate_ctxt *ctxt,
}
}
-static int emulate_iret_real(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops)
+static int emulate_iret_real(struct x86_emulate_ctxt *ctxt)
{
struct decode_cache *c = &ctxt->decode;
int rc = X86EMUL_CONTINUE;
@@ -1646,7 +1633,7 @@ static int emulate_iret_real(struct x86_emulate_ctxt *ctxt,
if (rc != X86EMUL_CONTINUE)
return rc;
- rc = load_segment_descriptor(ctxt, ops, (u16)cs, VCPU_SREG_CS);
+ rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
if (rc != X86EMUL_CONTINUE)
return rc;
@@ -1667,12 +1654,11 @@ static int emulate_iret_real(struct x86_emulate_ctxt *ctxt,
return rc;
}
-static inline int emulate_iret(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops* ops)
+static int emulate_iret(struct x86_emulate_ctxt *ctxt)
{
switch(ctxt->mode) {
case X86EMUL_MODE_REAL:
- return emulate_iret_real(ctxt, ops);
+ return emulate_iret_real(ctxt);
case X86EMUL_MODE_VM86:
case X86EMUL_MODE_PROT16:
case X86EMUL_MODE_PROT32:
@@ -1691,7 +1677,7 @@ static int em_jmp_far(struct x86_emulate_ctxt *ctxt)
memcpy(&sel, c->src.valptr + c->op_bytes, 2);
- rc = load_segment_descriptor(ctxt, ctxt->ops, sel, VCPU_SREG_CS);
+ rc = load_segment_descriptor(ctxt, sel, VCPU_SREG_CS);
if (rc != X86EMUL_CONTINUE)
return rc;
@@ -1828,8 +1814,7 @@ static int em_grp9(struct x86_emulate_ctxt *ctxt)
return X86EMUL_CONTINUE;
}
-static int emulate_ret_far(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops)
+static int emulate_ret_far(struct x86_emulate_ctxt *ctxt)
{
struct decode_cache *c = &ctxt->decode;
int rc;
@@ -1843,12 +1828,11 @@ static int emulate_ret_far(struct x86_emulate_ctxt *ctxt,
rc = emulate_pop(ctxt, &cs, c->op_bytes);
if (rc != X86EMUL_CONTINUE)
return rc;
- rc = load_segment_descriptor(ctxt, ops, (u16)cs, VCPU_SREG_CS);
+ rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
return rc;
}
-static int emulate_load_segment(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, int seg)
+static int emulate_load_segment(struct x86_emulate_ctxt *ctxt, int seg)
{
struct decode_cache *c = &ctxt->decode;
unsigned short sel;
@@ -1856,7 +1840,7 @@ static int emulate_load_segment(struct x86_emulate_ctxt *ctxt,
memcpy(&sel, c->src.valptr + c->op_bytes, 2);
- rc = load_segment_descriptor(ctxt, ops, sel, seg);
+ rc = load_segment_descriptor(ctxt, sel, seg);
if (rc != X86EMUL_CONTINUE)
return rc;
@@ -1864,15 +1848,14 @@ static int emulate_load_segment(struct x86_emulate_ctxt *ctxt,
return rc;
}
-static inline void
+static void
setup_syscalls_segments(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops, struct desc_struct *cs,
- struct desc_struct *ss)
+ struct desc_struct *cs, struct desc_struct *ss)
{
u16 selector;
memset(cs, 0, sizeof(struct desc_struct));
- ops->get_segment(ctxt, &selector, cs, NULL, VCPU_SREG_CS);
+ ctxt->ops->get_segment(ctxt, &selector, cs, NULL, VCPU_SREG_CS);
memset(ss, 0, sizeof(struct desc_struct));
cs->l = 0; /* will be adjusted later */
@@ -1895,10 +1878,10 @@ setup_syscalls_segments(struct x86_emulate_ctxt *ctxt,
ss->p = 1;
}
-static int
-emulate_syscall(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
+static int emulate_syscall(struct x86_emulate_ctxt *ctxt)
{
struct decode_cache *c = &ctxt->decode;
+ struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct cs, ss;
u64 msr_data;
u16 cs_sel, ss_sel;
@@ -1910,7 +1893,7 @@ emulate_syscall(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
return emulate_ud(ctxt);
ops->get_msr(ctxt, MSR_EFER, &efer);
- setup_syscalls_segments(ctxt, ops, &cs, &ss);
+ setup_syscalls_segments(ctxt, &cs, &ss);
ops->get_msr(ctxt, MSR_STAR, &msr_data);
msr_data >>= 32;
@@ -1948,16 +1931,16 @@ emulate_syscall(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
return X86EMUL_CONTINUE;
}
-static int
-emulate_sysenter(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
+static int emulate_sysenter(struct x86_emulate_ctxt *ctxt)
{
struct decode_cache *c = &ctxt->decode;
+ struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct cs, ss;
u64 msr_data;
u16 cs_sel, ss_sel;
u64 efer = 0;
- ctxt->ops->get_msr(ctxt, MSR_EFER, &efer);
+ ops->get_msr(ctxt, MSR_EFER, &efer);
/* inject #GP if in real mode */
if (ctxt->mode == X86EMUL_MODE_REAL)
return emulate_gp(ctxt, 0);
@@ -1968,7 +1951,7 @@ emulate_sysenter(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
if (ctxt->mode == X86EMUL_MODE_PROT64)
return emulate_ud(ctxt);
- setup_syscalls_segments(ctxt, ops, &cs, &ss);
+ setup_syscalls_segments(ctxt, &cs, &ss);
ops->get_msr(ctxt, MSR_IA32_SYSENTER_CS, &msr_data);
switch (ctxt->mode) {
@@ -2004,10 +1987,10 @@ emulate_sysenter(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
return X86EMUL_CONTINUE;
}
-static int
-emulate_sysexit(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
+static int emulate_sysexit(struct x86_emulate_ctxt *ctxt)
{
struct decode_cache *c = &ctxt->decode;
+ struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct cs, ss;
u64 msr_data;
int usermode;
@@ -2018,7 +2001,7 @@ emulate_sysexit(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
ctxt->mode == X86EMUL_MODE_VM86)
return emulate_gp(ctxt, 0);
- setup_syscalls_segments(ctxt, ops, &cs, &ss);
+ setup_syscalls_segments(ctxt, &cs, &ss);
if ((c->rex_prefix & 0x8) != 0x0)
usermode = X86EMUL_MODE_PROT64;
@@ -2056,8 +2039,7 @@ emulate_sysexit(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
return X86EMUL_CONTINUE;
}
-static bool emulator_bad_iopl(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops)
+static bool emulator_bad_iopl(struct x86_emulate_ctxt *ctxt)
{
int iopl;
if (ctxt->mode == X86EMUL_MODE_REAL)
@@ -2065,13 +2047,13 @@ static bool emulator_bad_iopl(struct x86_emulate_ctxt *ctxt,
if (ctxt->mode == X86EMUL_MODE_VM86)
return true;
iopl = (ctxt->eflags & X86_EFLAGS_IOPL) >> IOPL_SHIFT;
- return ops->cpl(ctxt) > iopl;
+ return ctxt->ops->cpl(ctxt) > iopl;
}
static bool emulator_io_port_access_allowed(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 port, u16 len)
{
+ struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct tr_seg;
u32 base3;
int r;
@@ -2102,14 +2084,13 @@ static bool emulator_io_port_access_allowed(struct x86_emulate_ctxt *ctxt,
}
static bool emulator_io_permited(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 port, u16 len)
{
if (ctxt->perm_ok)
return true;
- if (emulator_bad_iopl(ctxt, ops))
- if (!emulator_io_port_access_allowed(ctxt, ops, port, len))
+ if (emulator_bad_iopl(ctxt))
+ if (!emulator_io_port_access_allowed(ctxt, port, len))
return false;
ctxt->perm_ok = true;
@@ -2118,7 +2099,6 @@ static bool emulator_io_permited(struct x86_emulate_ctxt *ctxt,
}
static void save_state_to_tss16(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
struct tss_segment_16 *tss)
{
struct decode_cache *c = &ctxt->decode;
@@ -2142,7 +2122,6 @@ static void save_state_to_tss16(struct x86_emulate_ctxt *ctxt,
}
static int load_state_from_tss16(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
struct tss_segment_16 *tss)
{
struct decode_cache *c = &ctxt->decode;
@@ -2173,19 +2152,19 @@ static int load_state_from_tss16(struct x86_emulate_ctxt *ctxt,
* Now load segment descriptors. If fault happenes at this stage
* it is handled in a context of new task
*/
- ret = load_segment_descriptor(ctxt, ops, tss->ldt, VCPU_SREG_LDTR);
+ ret = load_segment_descriptor(ctxt, tss->ldt, VCPU_SREG_LDTR);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->es, VCPU_SREG_ES);
+ ret = load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->cs, VCPU_SREG_CS);
+ ret = load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->ss, VCPU_SREG_SS);
+ ret = load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->ds, VCPU_SREG_DS);
+ ret = load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS);
if (ret != X86EMUL_CONTINUE)
return ret;
@@ -2193,10 +2172,10 @@ static int load_state_from_tss16(struct x86_emulate_ctxt *ctxt,
}
static int task_switch_16(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 tss_selector, u16 old_tss_sel,
ulong old_tss_base, struct desc_struct *new_desc)
{
+ struct x86_emulate_ops *ops = ctxt->ops;
struct tss_segment_16 tss_seg;
int ret;
u32 new_tss_base = get_desc_base(new_desc);
@@ -2207,7 +2186,7 @@ static int task_switch_16(struct x86_emulate_ctxt *ctxt,
/* FIXME: need to provide precise fault address */
return ret;
- save_state_to_tss16(ctxt, ops, &tss_seg);
+ save_state_to_tss16(ctxt, &tss_seg);
ret = ops->write_std(ctxt, old_tss_base, &tss_seg, sizeof tss_seg,
&ctxt->exception);
@@ -2233,16 +2212,15 @@ static int task_switch_16(struct x86_emulate_ctxt *ctxt,
return ret;
}
- return load_state_from_tss16(ctxt, ops, &tss_seg);
+ return load_state_from_tss16(ctxt, &tss_seg);
}
static void save_state_to_tss32(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
struct tss_segment_32 *tss)
{
struct decode_cache *c = &ctxt->decode;
- tss->cr3 = ops->get_cr(ctxt, 3);
+ tss->cr3 = ctxt->ops->get_cr(ctxt, 3);
tss->eip = c->eip;
tss->eflags = ctxt->eflags;
tss->eax = c->regs[VCPU_REGS_RAX];
@@ -2264,13 +2242,12 @@ static void save_state_to_tss32(struct x86_emulate_ctxt *ctxt,
}
static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
struct tss_segment_32 *tss)
{
struct decode_cache *c = &ctxt->decode;
int ret;
- if (ops->set_cr(ctxt, 3, tss->cr3))
+ if (ctxt->ops->set_cr(ctxt, 3, tss->cr3))
return emulate_gp(ctxt, 0);
c->eip = tss->eip;
ctxt->eflags = tss->eflags | 2;
@@ -2299,25 +2276,25 @@ static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt,
* Now load segment descriptors. If fault happenes at this stage
* it is handled in a context of new task
*/
- ret = load_segment_descriptor(ctxt, ops, tss->ldt_selector, VCPU_SREG_LDTR);
+ ret = load_segment_descriptor(ctxt, tss->ldt_selector, VCPU_SREG_LDTR);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->es, VCPU_SREG_ES);
+ ret = load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->cs, VCPU_SREG_CS);
+ ret = load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->ss, VCPU_SREG_SS);
+ ret = load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->ds, VCPU_SREG_DS);
+ ret = load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->fs, VCPU_SREG_FS);
+ ret = load_segment_descriptor(ctxt, tss->fs, VCPU_SREG_FS);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = load_segment_descriptor(ctxt, ops, tss->gs, VCPU_SREG_GS);
+ ret = load_segment_descriptor(ctxt, tss->gs, VCPU_SREG_GS);
if (ret != X86EMUL_CONTINUE)
return ret;
@@ -2325,10 +2302,10 @@ static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt,
}
static int task_switch_32(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 tss_selector, u16 old_tss_sel,
ulong old_tss_base, struct desc_struct *new_desc)
{
+ struct x86_emulate_ops *ops = ctxt->ops;
struct tss_segment_32 tss_seg;
int ret;
u32 new_tss_base = get_desc_base(new_desc);
@@ -2339,7 +2316,7 @@ static int task_switch_32(struct x86_emulate_ctxt *ctxt,
/* FIXME: need to provide precise fault address */
return ret;
- save_state_to_tss32(ctxt, ops, &tss_seg);
+ save_state_to_tss32(ctxt, &tss_seg);
ret = ops->write_std(ctxt, old_tss_base, &tss_seg, sizeof tss_seg,
&ctxt->exception);
@@ -2365,14 +2342,14 @@ static int task_switch_32(struct x86_emulate_ctxt *ctxt,
return ret;
}
- return load_state_from_tss32(ctxt, ops, &tss_seg);
+ return load_state_from_tss32(ctxt, &tss_seg);
}
static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
- struct x86_emulate_ops *ops,
u16 tss_selector, int reason,
bool has_error_code, u32 error_code)
{
+ struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct curr_tss_desc, next_tss_desc;
int ret;
u16 old_tss_sel = get_segment_selector(ctxt, VCPU_SREG_TR);
@@ -2382,10 +2359,10 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
/* FIXME: old_tss_base == ~0 ? */
- ret = read_segment_descriptor(ctxt, ops, tss_selector, &next_tss_desc);
+ ret = read_segment_descriptor(ctxt, tss_selector, &next_tss_desc);
if (ret != X86EMUL_CONTINUE)
return ret;
- ret = read_segment_descriptor(ctxt, ops, old_tss_sel, &curr_tss_desc);
+ ret = read_segment_descriptor(ctxt, old_tss_sel, &curr_tss_desc);
if (ret != X86EMUL_CONTINUE)
return ret;
@@ -2407,8 +2384,7 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
if (reason == TASK_SWITCH_IRET || reason == TASK_SWITCH_JMP) {
curr_tss_desc.type &= ~(1 << 1); /* clear busy flag */
- write_segment_descriptor(ctxt, ops, old_tss_sel,
- &curr_tss_desc);
+ write_segment_descriptor(ctxt, old_tss_sel, &curr_tss_desc);
}
if (reason == TASK_SWITCH_IRET)
@@ -2420,10 +2396,10 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
old_tss_sel = 0xffff;
if (next_tss_desc.type & 8)
- ret = task_switch_32(ctxt, ops, tss_selector, old_tss_sel,
+ ret = task_switch_32(ctxt, tss_selector, old_tss_sel,
old_tss_base, &next_tss_desc);
else
- ret = task_switch_16(ctxt, ops, tss_selector, old_tss_sel,
+ ret = task_switch_16(ctxt, tss_selector, old_tss_sel,
old_tss_base, &next_tss_desc);
if (ret != X86EMUL_CONTINUE)
return ret;
@@ -2433,8 +2409,7 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
if (reason != TASK_SWITCH_IRET) {
next_tss_desc.type |= (1 << 1); /* set busy flag */
- write_segment_descriptor(ctxt, ops, tss_selector,
- &next_tss_desc);
+ write_segment_descriptor(ctxt, tss_selector, &next_tss_desc);
}
ops->set_cr(ctxt, 0, ops->get_cr(ctxt, 0) | X86_CR0_TS);
@@ -2456,14 +2431,13 @@ int emulator_task_switch(struct x86_emulate_ctxt *ctxt,
u16 tss_selector, int reason,
bool has_error_code, u32 error_code)
{
- struct x86_emulate_ops *ops = ctxt->ops;
struct decode_cache *c = &ctxt->decode;
int rc;
c->eip = ctxt->eip;
c->dst.type = OP_NONE;
- rc = emulator_do_task_switch(ctxt, ops, tss_selector, reason,
+ rc = emulator_do_task_switch(ctxt, tss_selector, reason,
has_error_code, error_code);
if (rc == X86EMUL_CONTINUE)
@@ -2533,7 +2507,7 @@ static int em_call_far(struct x86_emulate_ctxt *ctxt)
old_eip = c->eip;
memcpy(&sel, c->src.valptr + c->op_bytes, 2);
- if (load_segment_descriptor(ctxt, ctxt->ops, sel, VCPU_SREG_CS))
+ if (load_segment_descriptor(ctxt, sel, VCPU_SREG_CS))
return X86EMUL_CONTINUE;
c->eip = 0;
@@ -2971,7 +2945,7 @@ static int check_perm_in(struct x86_emulate_ctxt *ctxt)
struct decode_cache *c = &ctxt->decode;
c->dst.bytes = min(c->dst.bytes, 4u);
- if (!emulator_io_permited(ctxt, ctxt->ops, c->src.val, c->dst.bytes))
+ if (!emulator_io_permited(ctxt, c->src.val, c->dst.bytes))
return emulate_gp(ctxt, 0);
return X86EMUL_CONTINUE;
@@ -2982,7 +2956,7 @@ static int check_perm_out(struct x86_emulate_ctxt *ctxt)
struct decode_cache *c = &ctxt->decode;
c->src.bytes = min(c->src.bytes, 4u);
- if (!emulator_io_permited(ctxt, ctxt->ops, c->dst.val, c->src.bytes))
+ if (!emulator_io_permited(ctxt, c->dst.val, c->src.bytes))
return emulate_gp(ctxt, 0);
return X86EMUL_CONTINUE;
@@ -3708,8 +3682,7 @@ static bool string_insn_completed(struct x86_emulate_ctxt *ctxt)
return false;
}
-int
-x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
+int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
{
struct x86_emulate_ops *ops = ctxt->ops;
u64 msr_data;
@@ -3838,25 +3811,25 @@ special_insn:
switch (c->b) {
case 0x06: /* push es */
- rc = emulate_push_sreg(ctxt, ops, VCPU_SREG_ES);
+ rc = emulate_push_sreg(ctxt, VCPU_SREG_ES);
break;
case 0x07: /* pop es */
- rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_ES);
+ rc = emulate_pop_sreg(ctxt, VCPU_SREG_ES);
break;
case 0x0e: /* push cs */
- rc = emulate_push_sreg(ctxt, ops, VCPU_SREG_CS);
+ rc = emulate_push_sreg(ctxt, VCPU_SREG_CS);
break;
case 0x16: /* push ss */
- rc = emulate_push_sreg(ctxt, ops, VCPU_SREG_SS);
+ rc = emulate_push_sreg(ctxt, VCPU_SREG_SS);
break;
case 0x17: /* pop ss */
- rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_SS);
+ rc = emulate_pop_sreg(ctxt, VCPU_SREG_SS);
break;
case 0x1e: /* push ds */
- rc = emulate_push_sreg(ctxt, ops, VCPU_SREG_DS);
+ rc = emulate_push_sreg(ctxt, VCPU_SREG_DS);
break;
case 0x1f: /* pop ds */
- rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_DS);
+ rc = emulate_pop_sreg(ctxt, VCPU_SREG_DS);
break;
case 0x40 ... 0x47: /* inc r16/r32 */
emulate_1op("inc", c->dst, ctxt->eflags);
@@ -3922,7 +3895,7 @@ special_insn:
if (c->modrm_reg == VCPU_SREG_SS)
ctxt->interruptibility = KVM_X86_SHADOW_INT_MOV_SS;
- rc = load_segment_descriptor(ctxt, ops, sel, c->modrm_reg);
+ rc = load_segment_descriptor(ctxt, sel, c->modrm_reg);
c->dst.type = OP_NONE; /* Disable writeback. */
break;
@@ -3953,13 +3926,13 @@ special_insn:
rc = em_pop(ctxt);
break;
case 0xc4: /* les */
- rc = emulate_load_segment(ctxt, ops, VCPU_SREG_ES);
+ rc = emulate_load_segment(ctxt, VCPU_SREG_ES);
break;
case 0xc5: /* lds */
- rc = emulate_load_segment(ctxt, ops, VCPU_SREG_DS);
+ rc = emulate_load_segment(ctxt, VCPU_SREG_DS);
break;
case 0xcb: /* ret far */
- rc = emulate_ret_far(ctxt, ops);
+ rc = emulate_ret_far(ctxt);
break;
case 0xcc: /* int3 */
irq = 3;
@@ -3967,7 +3940,7 @@ special_insn:
case 0xcd: /* int n */
irq = c->src.val;
do_interrupt:
- rc = emulate_int(ctxt, ops, irq);
+ rc = emulate_int(ctxt, irq);
break;
case 0xce: /* into */
if (ctxt->eflags & EFLG_OF) {
@@ -3976,7 +3949,7 @@ special_insn:
}
break;
case 0xcf: /* iret */
- rc = emulate_iret(ctxt, ops);
+ rc = emulate_iret(ctxt);
break;
case 0xd0 ... 0xd1: /* Grp2 */
rc = em_grp2(ctxt);
@@ -4022,7 +3995,7 @@ special_insn:
case 0xed: /* in (e/r)ax,dx */
c->src.val = c->regs[VCPU_REGS_RDX];
do_io_in:
- if (!pio_in_emulated(ctxt, ops, c->dst.bytes, c->src.val,
+ if (!pio_in_emulated(ctxt, c->dst.bytes, c->src.val,
&c->dst.val))
goto done; /* IO is needed */
break;
@@ -4051,14 +4024,14 @@ special_insn:
ctxt->eflags |= EFLG_CF;
break;
case 0xfa: /* cli */
- if (emulator_bad_iopl(ctxt, ops)) {
+ if (emulator_bad_iopl(ctxt)) {
rc = emulate_gp(ctxt, 0);
goto done;
} else
ctxt->eflags &= ~X86_EFLAGS_IF;
break;
case 0xfb: /* sti */
- if (emulator_bad_iopl(ctxt, ops)) {
+ if (emulator_bad_iopl(ctxt)) {
rc = emulate_gp(ctxt, 0);
goto done;
} else {
@@ -4140,7 +4113,7 @@ done:
twobyte_insn:
switch (c->b) {
case 0x05: /* syscall */
- rc = emulate_syscall(ctxt, ops);
+ rc = emulate_syscall(ctxt);
break;
case 0x06:
rc = em_clts(ctxt);
@@ -4202,10 +4175,10 @@ twobyte_insn:
rc = X86EMUL_CONTINUE;
break;
case 0x34: /* sysenter */
- rc = emulate_sysenter(ctxt, ops);
+ rc = emulate_sysenter(ctxt);
break;
case 0x35: /* sysexit */
- rc = emulate_sysexit(ctxt, ops);
+ rc = emulate_sysexit(ctxt);
break;
case 0x40 ... 0x4f: /* cmov */
c->dst.val = c->dst.orig_val = c->src.val;
@@ -4220,10 +4193,10 @@ twobyte_insn:
c->dst.val = test_cc(c->b, ctxt->eflags);
break;
case 0xa0: /* push fs */
- rc = emulate_push_sreg(ctxt, ops, VCPU_SREG_FS);
+ rc = emulate_push_sreg(ctxt, VCPU_SREG_FS);
break;
case 0xa1: /* pop fs */
- rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_FS);
+ rc = emulate_pop_sreg(ctxt, VCPU_SREG_FS);
break;
case 0xa3:
bt: /* bt */
@@ -4237,10 +4210,10 @@ twobyte_insn:
emulate_2op_cl("shld", c->src2, c->src, c->dst, ctxt->eflags);
break;
case 0xa8: /* push gs */
- rc = emulate_push_sreg(ctxt, ops, VCPU_SREG_GS);
+ rc = emulate_push_sreg(ctxt, VCPU_SREG_GS);
break;
case 0xa9: /* pop gs */
- rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_GS);
+ rc = emulate_pop_sreg(ctxt, VCPU_SREG_GS);
break;
case 0xab:
bts: /* bts */
@@ -4270,17 +4243,17 @@ twobyte_insn:
}
break;
case 0xb2: /* lss */
- rc = emulate_load_segment(ctxt, ops, VCPU_SREG_SS);
+ rc = emulate_load_segment(ctxt, VCPU_SREG_SS);
break;
case 0xb3:
btr: /* btr */
emulate_2op_SrcV_nobyte("btr", c->src, c->dst, ctxt->eflags);
break;
case 0xb4: /* lfs */
- rc = emulate_load_segment(ctxt, ops, VCPU_SREG_FS);
+ rc = emulate_load_segment(ctxt, VCPU_SREG_FS);
break;
case 0xb5: /* lgs */
- rc = emulate_load_segment(ctxt, ops, VCPU_SREG_GS);
+ rc = emulate_load_segment(ctxt, VCPU_SREG_GS);
break;
case 0xb6 ... 0xb7: /* movzx */
c->dst.bytes = c->op_bytes;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 77c9d86..51df0b6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4513,7 +4513,7 @@ int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip)
vcpu->arch.emulate_ctxt.decode.ad_bytes = 2;
vcpu->arch.emulate_ctxt.decode.eip = vcpu->arch.emulate_ctxt.eip +
inc_eip;
- ret = emulate_int_real(&vcpu->arch.emulate_ctxt, &emulate_ops, irq);
+ ret = emulate_int_real(&vcpu->arch.emulate_ctxt, irq);
if (ret != X86EMUL_CONTINUE)
return EMULATE_FAIL;
--
1.7.4.1
--
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