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target-i386: fix set of registers zeroed on reset

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BND0-3, BNDCFGU, BNDCFGS, BNDSTATUS were not zeroed on reset, but they
should be (Intel Instruction Set Extensions Programming Reference
319433-015, pages 9-4 and 9-6).  Same for YMM.

XCR0 should be reset to 1.

TSC and TSC_RESET were zeroed already by the memset, remove the explicit
assignments.

Cc: Andreas Faerber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-04-29 13:10:05 +02:00
parent e0723c4510
commit 05e7e819d7
2 changed files with 7 additions and 7 deletions
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3
target-i386/cpu.c
View file

@ -2485,8 +2485,7 @@ static void x86_cpu_reset(CPUState *s)
cpu_breakpoint_remove_all(s, BP_CPU);
cpu_watchpoint_remove_all(s, BP_CPU);
env->tsc_adjust = 0;
env->tsc = 0;
env->xcr0 = 1;
#if !defined(CONFIG_USER_ONLY)
/* We hard-wire the BSP to the first CPU. */

11
target-i386/cpu.h
View file

@ -797,6 +797,10 @@ typedef struct CPUX86State {
target_ulong cr[5]; /* NOTE: cr1 is unused */
int32_t a20_mask;
BNDReg bnd_regs[4];
BNDCSReg bndcs_regs;
uint64_t msr_bndcfgs;
/* FPU state */
unsigned int fpstt; /* top of stack index */
uint16_t fpus;
@ -819,6 +823,8 @@ typedef struct CPUX86State {
XMMReg xmm_t0;
MMXReg mmx_t0;
XMMReg ymmh_regs[CPU_NB_REGS];
/* sysenter registers */
uint32_t sysenter_cs;
target_ulong sysenter_esp;
@ -928,12 +934,7 @@ typedef struct CPUX86State {
uint16_t fpus_vmstate;
uint16_t fptag_vmstate;
uint16_t fpregs_format_vmstate;
uint64_t xstate_bv;
XMMReg ymmh_regs[CPU_NB_REGS];
BNDReg bnd_regs[4];
BNDCSReg bndcs_regs;
uint64_t msr_bndcfgs;
uint64_t xcr0;