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HV: instr_emul: Cleanup ASSERT

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There so many ASSERT following the function vie_read_register and vm_get_seg_desc.
It's better to move the ASSERT to those two functions and make the code more
compact.

Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Kaige Fu 2018-07-12 16:20:13 +08:00 committed by lijinxia
parent e3302e87e8
commit 0fbdf374a3
1 changed files with 6 additions and 24 deletions
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30
hypervisor/arch/x86/guest/instr_emul.c
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@ -246,6 +246,8 @@ vie_read_register(struct vcpu *vcpu, enum cpu_reg_name reg, uint64_t *rval)
int error;
error = vm_get_register(vcpu, reg, rval);
ASSERT(error == 0, "%s: error (%d) happens when getting reg",
__func__, error);
return error;
}
@ -351,6 +353,9 @@ vie_update_register(struct vcpu *vcpu, enum cpu_reg_name reg,
}
error = vm_set_register(vcpu, reg, val);
ASSERT(error == 0, "%s: Error (%d) happens when update reg",
__func__, error);
return error;
}
@ -696,7 +701,6 @@ emulate_movs(struct vcpu *vcpu, __unused uint64_t gpa, struct vie *vie,
if (repeat != 0) {
error = vie_read_register(vcpu, CPU_REG_RCX, &rcx);
ASSERT(error == 0, "%s: error %d getting rcx", __func__, error);
/*
* The count register is %rcx, %ecx or %cx depending on the
@ -725,13 +729,8 @@ emulate_movs(struct vcpu *vcpu, __unused uint64_t gpa, struct vie *vie,
(void)memcpy_s((char *)dstaddr, 16U, (char *)srcaddr, opsize);
error = vie_read_register(vcpu, CPU_REG_RSI, &rsi);
ASSERT(error == 0, "%s: error %d getting rsi", __func__, error);
error = vie_read_register(vcpu, CPU_REG_RDI, &rdi);
ASSERT(error == 0, "%s: error %d getting rdi", __func__, error);
error = vie_read_register(vcpu, CPU_REG_RFLAGS, &rflags);
ASSERT(error == 0, "%s: error %d getting rflags", __func__, error);
if ((rflags & PSL_D) != 0U) {
rsi -= opsize;
@ -743,17 +742,14 @@ emulate_movs(struct vcpu *vcpu, __unused uint64_t gpa, struct vie *vie,
error = vie_update_register(vcpu, CPU_REG_RSI, rsi,
vie->addrsize);
ASSERT(error == 0, "%s: error %d updating rsi", __func__, error);
error = vie_update_register(vcpu, CPU_REG_RDI, rdi,
vie->addrsize);
ASSERT(error == 0, "%s: error %d updating rdi", __func__, error);
if (repeat != 0) {
rcx = rcx - 1;
error = vie_update_register(vcpu, CPU_REG_RCX,
rcx, vie->addrsize);
ASSERT(error == 0, "%s: error %d updating rcx", __func__, error);
/*
* Repeat the instruction if the count register is not zero.
@ -783,7 +779,6 @@ emulate_stos(struct vcpu *vcpu, uint64_t gpa, struct vie *vie,
if (repeat != 0) {
error = vie_read_register(vcpu, CPU_REG_RCX, &rcx);
ASSERT(error == 0, "%s: error %d getting rcx", __func__, error);
/*
* The count register is %rcx, %ecx or %cx depending on the
@ -795,7 +790,6 @@ emulate_stos(struct vcpu *vcpu, uint64_t gpa, struct vie *vie,
}
error = vie_read_register(vcpu, CPU_REG_RAX, &val);
ASSERT(error == 0, "%s: error %d getting rax", __func__, error);
error = memwrite(vcpu, gpa, val, opsize, arg);
if (error != 0) {
@ -803,10 +797,7 @@ emulate_stos(struct vcpu *vcpu, uint64_t gpa, struct vie *vie,
}
error = vie_read_register(vcpu, CPU_REG_RDI, &rdi);
ASSERT(error == 0, "%s: error %d getting rdi", __func__, error);
error = vie_read_register(vcpu, CPU_REG_RFLAGS, &rflags);
ASSERT(error == 0, "%s: error %d getting rflags", __func__, error);
if ((rflags & PSL_D) != 0U) {
rdi -= opsize;
@ -816,13 +807,11 @@ emulate_stos(struct vcpu *vcpu, uint64_t gpa, struct vie *vie,
error = vie_update_register(vcpu, CPU_REG_RDI, rdi,
vie->addrsize);
ASSERT(error == 0, "%s: error %d updating rdi", __func__, error);
if (repeat != 0) {
rcx = rcx - 1;
error = vie_update_register(vcpu, CPU_REG_RCX,
rcx, vie->addrsize);
ASSERT(error == 0, "%s: error %d updating rcx", __func__, error);
/*
* Repeat the instruction if the count register is not zero.
@ -1318,13 +1307,9 @@ emulate_stack_op(struct vcpu *vcpu, uint64_t mmio_gpa, struct vie *vie,
}
error = vie_read_register(vcpu, CPU_REG_CR0, &cr0);
ASSERT(error == 0, "%s: error %d getting cr0", __func__, error);
error = vie_read_register(vcpu, CPU_REG_RFLAGS, &rflags);
ASSERT(error == 0, "%s: error %d getting rflags", __func__, error);
error = vie_read_register(vcpu, CPU_REG_RSP, &rsp);
ASSERT(error == 0, "%s: error %d getting rsp", __func__, error);
if (pushop != 0) {
rsp -= size;
}
@ -1379,7 +1364,6 @@ emulate_stack_op(struct vcpu *vcpu, uint64_t mmio_gpa, struct vie *vie,
if (error == 0) {
error = vie_update_register(vcpu, CPU_REG_RSP, rsp,
stackaddrsize);
ASSERT(error == 0, "error %d updating rsp", error);
}
return error;
}
@ -1478,7 +1462,6 @@ emulate_bittest(struct vcpu *vcpu, uint64_t gpa, struct vie *vie,
}
error = vie_read_register(vcpu, CPU_REG_RFLAGS, &rflags);
ASSERT(error == 0, "%s: error %d getting rflags", __func__, error);
error = memread(vcpu, gpa, &val, vie->opsize, memarg);
if (error != 0) {
@ -1500,7 +1483,6 @@ emulate_bittest(struct vcpu *vcpu, uint64_t gpa, struct vie *vie,
}
size = 8U;
error = vie_update_register(vcpu, CPU_REG_RFLAGS, rflags, size);
ASSERT(error == 0, "%s: error %d updating rflags", __func__, error);
return 0;
}