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Add SYSENTER and SYSEXIT instructions

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This commit is contained in:
SarahW 2020-06-29 22:19:41 +01:00
commit 7eff4f4ba8
8 changed files with 224 additions and 9 deletions
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25
src/x86_ops_misc.h
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@ -970,3 +970,28 @@ static int opWRMSR(uint32_t fetchdat)
return 1;
}
static int opSYSENTER(uint32_t fetchdat)
{
if (!(cr0 & 1) || !(sysenter_cs & 0xfffc))
{
x86gpf(NULL,0);
return 1;
}
// pclog("opSYSENTER: CS=%04x EIP=%08x ESP=%08x %04x:%08x %i\n", sysenter_cs, sysenter_eip, sysenter_esp, CS,cpu_state.pc, times);
sysenter();
CPU_BLOCK_END();
return 0;
}
static int opSYSEXIT(uint32_t fetchdat)
{
if (!(cr0 & 1) || !(sysenter_cs & 0xfffc) || CPL)
{
x86gpf(NULL,0);
return 1;
}
// pclog("opSYSEXIT\n");
sysexit();
CPU_BLOCK_END();
return 0;
}