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reworked SVM interrupt handling logic - fixed vmrun EIP saved value - reworked cr8 handling - added CPUState.hflags2

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4662 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2008-06-04 17:02:19 +00:00
parent 3cd9acb410
commit db620f46a8
7 changed files with 110 additions and 109 deletions
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89
cpu-exec.c
View file

@ -368,11 +368,8 @@ int cpu_exec(CPUState *env1)
next_tb = 0; /* force lookup of first TB */
for(;;) {
interrupt_request = env->interrupt_request;
if (__builtin_expect(interrupt_request, 0)
#if defined(TARGET_I386)
&& env->hflags & HF_GIF_MASK
#endif
&& likely(!(env->singlestep_enabled & SSTEP_NOIRQ))) {
if (__builtin_expect(interrupt_request, 0) &&
likely(!(env->singlestep_enabled & SSTEP_NOIRQ))) {
if (interrupt_request & CPU_INTERRUPT_DEBUG) {
env->interrupt_request &= ~CPU_INTERRUPT_DEBUG;
env->exception_index = EXCP_DEBUG;
@ -388,47 +385,51 @@ int cpu_exec(CPUState *env1)
}
#endif
#if defined(TARGET_I386)
if ((interrupt_request & CPU_INTERRUPT_SMI) &&
!(env->hflags & HF_SMM_MASK)) {
svm_check_intercept(SVM_EXIT_SMI);
env->interrupt_request &= ~CPU_INTERRUPT_SMI;
do_smm_enter();
next_tb = 0;
} else if ((interrupt_request & CPU_INTERRUPT_NMI) &&
!(env->hflags & HF_NMI_MASK)) {
env->interrupt_request &= ~CPU_INTERRUPT_NMI;
env->hflags |= HF_NMI_MASK;
do_interrupt(EXCP02_NMI, 0, 0, 0, 1);
next_tb = 0;
} else if ((interrupt_request & CPU_INTERRUPT_HARD) &&
(env->eflags & IF_MASK || env->hflags & HF_HIF_MASK) &&
!(env->hflags & HF_INHIBIT_IRQ_MASK)) {
int intno;
svm_check_intercept(SVM_EXIT_INTR);
env->interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_VIRQ);
intno = cpu_get_pic_interrupt(env);
if (loglevel & CPU_LOG_TB_IN_ASM) {
fprintf(logfile, "Servicing hardware INT=0x%02x\n", intno);
}
do_interrupt(intno, 0, 0, 0, 1);
/* ensure that no TB jump will be modified as
the program flow was changed */
next_tb = 0;
if (env->hflags2 & HF2_GIF_MASK) {
if ((interrupt_request & CPU_INTERRUPT_SMI) &&
!(env->hflags & HF_SMM_MASK)) {
svm_check_intercept(SVM_EXIT_SMI);
env->interrupt_request &= ~CPU_INTERRUPT_SMI;
do_smm_enter();
next_tb = 0;
} else if ((interrupt_request & CPU_INTERRUPT_NMI) &&
!(env->hflags2 & HF2_NMI_MASK)) {
env->interrupt_request &= ~CPU_INTERRUPT_NMI;
env->hflags2 |= HF2_NMI_MASK;
do_interrupt(EXCP02_NMI, 0, 0, 0, 1);
next_tb = 0;
} else if ((interrupt_request & CPU_INTERRUPT_HARD) &&
(((env->hflags2 & HF2_VINTR_MASK) &&
(env->hflags2 & HF2_HIF_MASK)) ||
(!(env->hflags2 & HF2_VINTR_MASK) &&
(env->eflags & IF_MASK &&
!(env->hflags & HF_INHIBIT_IRQ_MASK))))) {
int intno;
svm_check_intercept(SVM_EXIT_INTR);
env->interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_VIRQ);
intno = cpu_get_pic_interrupt(env);
if (loglevel & CPU_LOG_TB_IN_ASM) {
fprintf(logfile, "Servicing hardware INT=0x%02x\n", intno);
}
do_interrupt(intno, 0, 0, 0, 1);
/* ensure that no TB jump will be modified as
the program flow was changed */
next_tb = 0;
#if !defined(CONFIG_USER_ONLY)
} else if ((interrupt_request & CPU_INTERRUPT_VIRQ) &&
(env->eflags & IF_MASK) && !(env->hflags & HF_INHIBIT_IRQ_MASK)) {
int intno;
/* FIXME: this should respect TPR */
env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
svm_check_intercept(SVM_EXIT_VINTR);
intno = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_vector));
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "Servicing virtual hardware INT=0x%02x\n", intno);
do_interrupt(intno, 0, 0, -1, 1);
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl),
ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl)) & ~V_IRQ_MASK);
next_tb = 0;
} else if ((interrupt_request & CPU_INTERRUPT_VIRQ) &&
(env->eflags & IF_MASK) &&
!(env->hflags & HF_INHIBIT_IRQ_MASK)) {
int intno;
/* FIXME: this should respect TPR */
svm_check_intercept(SVM_EXIT_VINTR);
env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
intno = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_vector));
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "Servicing virtual hardware INT=0x%02x\n", intno);
do_interrupt(intno, 0, 0, 0, 1);
next_tb = 0;
#endif
}
}
#elif defined(TARGET_PPC)
#if 0

29
target-i386/cpu.h
View file

@ -145,11 +145,8 @@
#define HF_OSFXSR_SHIFT 16 /* CR4.OSFXSR */
#define HF_VM_SHIFT 17 /* must be same as eflags */
#define HF_SMM_SHIFT 19 /* CPU in SMM mode */
#define HF_GIF_SHIFT 20 /* if set CPU takes interrupts */
#define HF_HIF_SHIFT 21 /* shadow copy of IF_MASK when in SVM */
#define HF_NMI_SHIFT 22 /* CPU serving NMI */
#define HF_SVME_SHIFT 23 /* SVME enabled (copy of EFER.SVME) */
#define HF_SVMI_SHIFT 24 /* SVM intercepts are active */
#define HF_SVME_SHIFT 20 /* SVME enabled (copy of EFER.SVME) */
#define HF_SVMI_SHIFT 21 /* SVM intercepts are active */
#define HF_CPL_MASK (3 << HF_CPL_SHIFT)
#define HF_SOFTMMU_MASK (1 << HF_SOFTMMU_SHIFT)
@ -166,12 +163,21 @@
#define HF_CS64_MASK (1 << HF_CS64_SHIFT)
#define HF_OSFXSR_MASK (1 << HF_OSFXSR_SHIFT)
#define HF_SMM_MASK (1 << HF_SMM_SHIFT)
#define HF_GIF_MASK (1 << HF_GIF_SHIFT)
#define HF_HIF_MASK (1 << HF_HIF_SHIFT)
#define HF_NMI_MASK (1 << HF_NMI_SHIFT)
#define HF_SVME_MASK (1 << HF_SVME_SHIFT)
#define HF_SVMI_MASK (1 << HF_SVMI_SHIFT)
/* hflags2 */
#define HF2_GIF_SHIFT 0 /* if set CPU takes interrupts */
#define HF2_HIF_SHIFT 1 /* value of IF_MASK when entering SVM */
#define HF2_NMI_SHIFT 2 /* CPU serving NMI */
#define HF2_VINTR_SHIFT 3 /* value of V_INTR_MASKING bit */
#define HF2_GIF_MASK (1 << HF2_GIF_SHIFT)
#define HF2_HIF_MASK (1 << HF2_HIF_SHIFT)
#define HF2_NMI_MASK (1 << HF2_NMI_SHIFT)
#define HF2_VINTR_MASK (1 << HF2_VINTR_SHIFT)
#define CR0_PE_MASK (1 << 0)
#define CR0_MP_MASK (1 << 1)
#define CR0_EM_MASK (1 << 2)
@ -488,7 +494,9 @@ typedef struct CPUX86State {
target_ulong cc_dst;
uint32_t cc_op;
int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
uint32_t hflags; /* hidden flags, see HF_xxx constants */
uint32_t hflags; /* TB flags, see HF_xxx constants. These flags
are known at translation time. */
uint32_t hflags2; /* various other flags, see HF2_xxx constants. */
/* segments */
SegmentCache segs[6]; /* selector values */
@ -497,7 +505,7 @@ typedef struct CPUX86State {
SegmentCache gdt; /* only base and limit are used */
SegmentCache idt; /* only base and limit are used */
target_ulong cr[9]; /* NOTE: cr1, cr5-7 are unused */
target_ulong cr[5]; /* NOTE: cr1 is unused */
uint64_t a20_mask;
/* FPU state */
@ -541,6 +549,7 @@ typedef struct CPUX86State {
uint16_t intercept_dr_read;
uint16_t intercept_dr_write;
uint32_t intercept_exceptions;
uint8_t v_tpr;
#ifdef TARGET_X86_64
target_ulong lstar;

2
target-i386/helper.c
View file

@ -374,7 +374,7 @@ void cpu_reset(CPUX86State *env)
#ifdef CONFIG_SOFTMMU
env->hflags |= HF_SOFTMMU_MASK;
#endif
env->hflags |= HF_GIF_MASK;
env->hflags2 |= HF2_GIF_MASK;
cpu_x86_update_cr0(env, 0x60000010);
env->a20_mask = ~0x0;

5
target-i386/helper.h
View file

@ -47,9 +47,6 @@ DEF_HELPER(target_ulong, helper_read_crN, (int reg))
DEF_HELPER(void, helper_write_crN, (int reg, target_ulong t0))
DEF_HELPER(void, helper_lmsw, (target_ulong t0))
DEF_HELPER(void, helper_clts, (void))
#if !defined(CONFIG_USER_ONLY)
DEF_HELPER(target_ulong, helper_movtl_T0_cr8, (void))
#endif
DEF_HELPER(void, helper_movl_drN_T0, (int reg, target_ulong t0))
DEF_HELPER(void, helper_invlpg, (target_ulong addr))
@ -102,7 +99,7 @@ DEF_HELPER(void, helper_svm_check_intercept_param, (uint32_t type, uint64_t para
DEF_HELPER(void, helper_vmexit, (uint32_t exit_code, uint64_t exit_info_1))
DEF_HELPER(void, helper_svm_check_io, (uint32_t port, uint32_t param,
uint32_t next_eip_addend))
DEF_HELPER(void, helper_vmrun, (int aflag))
DEF_HELPER(void, helper_vmrun, (int aflag, int next_eip_addend))
DEF_HELPER(void, helper_vmmcall, (void))
DEF_HELPER(void, helper_vmload, (int aflag))
DEF_HELPER(void, helper_vmsave, (int aflag))

81
target-i386/op_helper.c
View file

@ -2591,7 +2591,7 @@ void helper_iret_real(int shift)
if (shift == 0)
eflags_mask &= 0xffff;
load_eflags(new_eflags, eflags_mask);
env->hflags &= ~HF_NMI_MASK;
env->hflags2 &= ~HF2_NMI_MASK;
}
static inline void validate_seg(int seg_reg, int cpl)
@ -2843,7 +2843,7 @@ void helper_iret_protected(int shift, int next_eip)
} else {
helper_ret_protected(shift, 1, 0);
}
env->hflags &= ~HF_NMI_MASK;
env->hflags2 &= ~HF2_NMI_MASK;
#ifdef USE_KQEMU
if (kqemu_is_ok(env)) {
CC_OP = CC_OP_EFLAGS;
@ -2934,7 +2934,11 @@ target_ulong helper_read_crN(int reg)
val = env->cr[reg];
break;
case 8:
val = cpu_get_apic_tpr(env);
if (!(env->hflags2 & HF2_VINTR_MASK)) {
val = cpu_get_apic_tpr(env);
} else {
val = env->v_tpr;
}
break;
}
return val;
@ -2954,8 +2958,10 @@ void helper_write_crN(int reg, target_ulong t0)
cpu_x86_update_cr4(env, t0);
break;
case 8:
cpu_set_apic_tpr(env, t0);
env->cr[8] = t0;
if (!(env->hflags2 & HF2_VINTR_MASK)) {
cpu_set_apic_tpr(env, t0);
}
env->v_tpr = t0 & 0x0f;
break;
default:
env->cr[reg] = t0;
@ -2978,13 +2984,6 @@ void helper_clts(void)
env->hflags &= ~HF_TS_MASK;
}
#if !defined(CONFIG_USER_ONLY)
target_ulong helper_movtl_T0_cr8(void)
{
return cpu_get_apic_tpr(env);
}
#endif
/* XXX: do more */
void helper_movl_drN_T0(int reg, target_ulong t0)
{
@ -4721,7 +4720,7 @@ void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
#if defined(CONFIG_USER_ONLY)
void helper_vmrun(int aflag)
void helper_vmrun(int aflag, int next_eip_addend)
{
}
void helper_vmmcall(void)
@ -4791,7 +4790,7 @@ static inline void svm_load_seg_cache(target_phys_addr_t addr,
sc->base, sc->limit, sc->flags);
}
void helper_vmrun(int aflag)
void helper_vmrun(int aflag, int next_eip_addend)
{
target_ulong addr;
uint32_t event_inj;
@ -4820,7 +4819,6 @@ void helper_vmrun(int aflag)
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr8), env->cr[8]);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]);
@ -4836,7 +4834,8 @@ void helper_vmrun(int aflag)
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ds),
&env->segs[R_DS]);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip), EIP);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip),
EIP + next_eip_addend);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
@ -4866,17 +4865,16 @@ void helper_vmrun(int aflag)
cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2));
int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK);
if (int_ctl & V_INTR_MASKING_MASK) {
env->cr[8] = int_ctl & V_TPR_MASK;
cpu_set_apic_tpr(env, env->cr[8]);
env->v_tpr = int_ctl & V_TPR_MASK;
env->hflags2 |= HF2_VINTR_MASK;
if (env->eflags & IF_MASK)
env->hflags |= HF_HIF_MASK;
env->hflags2 |= HF2_HIF_MASK;
}
#ifdef TARGET_X86_64
cpu_load_efer(env,
ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer)));
#endif
env->eflags = 0;
load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
@ -4912,6 +4910,10 @@ void helper_vmrun(int aflag)
helper_stgi();
if (int_ctl & V_IRQ_MASK) {
env->interrupt_request |= CPU_INTERRUPT_VIRQ;
}
/* maybe we need to inject an event */
event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
if (event_inj & SVM_EVTINJ_VALID) {
@ -4931,14 +4933,17 @@ void helper_vmrun(int aflag)
env->exception_next_eip = -1;
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "INTR");
/* XXX: is it always correct ? */
do_interrupt(vector, 0, 0, 0, 1);
break;
case SVM_EVTINJ_TYPE_NMI:
env->exception_index = vector;
env->exception_index = EXCP02_NMI;
env->error_code = event_inj_err;
env->exception_is_int = 0;
env->exception_next_eip = EIP;
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "NMI");
cpu_loop_exit();
break;
case SVM_EVTINJ_TYPE_EXEPT:
env->exception_index = vector;
@ -4947,6 +4952,7 @@ void helper_vmrun(int aflag)
env->exception_next_eip = -1;
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "EXEPT");
cpu_loop_exit();
break;
case SVM_EVTINJ_TYPE_SOFT:
env->exception_index = vector;
@ -4955,17 +4961,12 @@ void helper_vmrun(int aflag)
env->exception_next_eip = EIP;
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "SOFT");
cpu_loop_exit();
break;
}
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, " %#x %#x\n", env->exception_index, env->error_code);
}
if ((int_ctl & V_IRQ_MASK) ||
(env->intercept & (1ULL << (SVM_EXIT_INTR - SVM_EXIT_INTR)))) {
env->interrupt_request |= CPU_INTERRUPT_VIRQ;
}
cpu_loop_exit();
}
void helper_vmmcall(void)
@ -5049,13 +5050,13 @@ void helper_vmsave(int aflag)
void helper_stgi(void)
{
helper_svm_check_intercept_param(SVM_EXIT_STGI, 0);
env->hflags |= HF_GIF_MASK;
env->hflags2 |= HF2_GIF_MASK;
}
void helper_clgi(void)
{
helper_svm_check_intercept_param(SVM_EXIT_CLGI, 0);
env->hflags &= ~HF_GIF_MASK;
env->hflags2 &= ~HF2_GIF_MASK;
}
void helper_skinit(void)
@ -5204,11 +5205,12 @@ void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3), env->cr[3]);
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4), env->cr[4]);
if ((int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl))) & V_INTR_MASKING_MASK) {
int_ctl &= ~V_TPR_MASK;
int_ctl |= env->cr[8] & V_TPR_MASK;
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
}
int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
int_ctl &= ~(V_TPR_MASK | V_IRQ_MASK);
int_ctl |= env->v_tpr & V_TPR_MASK;
if (env->interrupt_request & CPU_INTERRUPT_VIRQ)
int_ctl |= V_IRQ_MASK;
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags), compute_eflags());
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip), env->eip);
@ -5219,7 +5221,7 @@ void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
stb_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl), env->hflags & HF_CPL_MASK);
/* Reload the host state from vm_hsave */
env->hflags &= ~HF_HIF_MASK;
env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK);
env->hflags &= ~HF_SVMI_MASK;
env->intercept = 0;
env->intercept_exceptions = 0;
@ -5234,17 +5236,10 @@ void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
cpu_x86_update_cr0(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0)) | CR0_PE_MASK);
cpu_x86_update_cr4(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4)));
cpu_x86_update_cr3(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3)));
if (int_ctl & V_INTR_MASKING_MASK) {
env->cr[8] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr8));
cpu_set_apic_tpr(env, env->cr[8]);
}
/* we need to set the efer after the crs so the hidden flags get
set properly */
#ifdef TARGET_X86_64
cpu_load_efer(env,
ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer)));
#endif
env->eflags = 0;
load_eflags(ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags)),
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));

4
target-i386/svm.h
View file

@ -205,9 +205,7 @@ struct __attribute__ ((__packed__)) vmcb_save_area {
uint64_t sysenter_esp;
uint64_t sysenter_eip;
uint64_t cr2;
/* qemu: cr8 added to reuse this as hsave */
uint64_t cr8;
uint8_t reserved_6[32 - 8]; /* originally 32 */
uint8_t reserved_6[32];
uint64_t g_pat;
uint64_t dbgctl;
uint64_t br_from;

9
target-i386/translate.c
View file

@ -6569,10 +6569,11 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
break;
} else {
tcg_gen_helper_0_1(helper_vmrun,
tcg_const_i32(s->aflag));
s->cc_op = CC_OP_EFLAGS;
gen_eob(s);
tcg_gen_helper_0_2(helper_vmrun,
tcg_const_i32(s->aflag),
tcg_const_i32(s->pc - pc_start));
tcg_gen_exit_tb(0);
s->is_jmp = 3;
}
break;
case 1: /* VMMCALL */