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fixed VM86 support in Virtual Linux - fixed compilation issues with gcc 2.96 - cpuid returns now pentium pro in order to avoid F00F bug workaround in Linux kernel

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@277 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-06-25 16:18:05 +00:00
parent ea041c0e33
commit a363e34cc5
1 changed files with 21 additions and 4 deletions
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25
helper-i386.c
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@ -216,7 +216,10 @@ static void do_interrupt_protected(int intno, int is_int, int error_code,
break;
}
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
cpl = env->segs[R_CS].selector & 3;
if (env->eflags & VM_MASK)
cpl = 3;
else
cpl = env->segs[R_CS].selector & 3;
/* check privledge if software int */
if (is_int && dpl < cpl)
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
@ -572,13 +575,25 @@ void helper_cpuid(void)
ECX = 0x6c65746e;
EDX = 0x49656e69;
} else if (EAX == 1) {
int family, model, stepping;
/* EAX = 1 info */
EAX = 0x52b;
#if 0
/* pentium 75-200 */
family = 5;
model = 2;
stepping = 11;
#else
/* pentium pro */
family = 6;
model = 1;
stepping = 3;
#endif
EAX = (family << 8) | (model << 4) | stepping;
EBX = 0;
ECX = 0;
EDX = CPUID_FP87 | CPUID_DE | CPUID_PSE |
CPUID_TSC | CPUID_MSR | CPUID_MCE |
CPUID_CX8;
CPUID_CX8 | CPUID_PGE | CPUID_CMOV;
}
}
@ -751,7 +766,9 @@ void jmp_seg(int selector, unsigned int new_eip)
load_seg_cache(&sc1, e1, e2);
if (new_eip > sc1.limit)
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
env->segs[R_CS] = sc1;
env->segs[R_CS].base = sc1.base;
env->segs[R_CS].limit = sc1.limit;
env->segs[R_CS].flags = sc1.flags;
env->segs[R_CS].selector = (selector & 0xfffc) | cpl;
EIP = new_eip;
} else {