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Initialized the system call entry independent of the real type of SystemCall.

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svn path=/trunk/; revision=16087
This commit is contained in:
Hartmut Birr 2005-06-19 09:48:14 +00:00
parent fbf1722197
commit 499a2712a9
1 changed files with 8 additions and 16 deletions
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24
reactos/ntoskrnl/ke/i386/kernel.c
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@ -521,25 +521,17 @@ Ki386SetProcessorFeatures(VOID)
}
if (FastSystemCallDisable) {
/* Use INT2E */
SharedUserData->SystemCall[0] = 0x8D;
SharedUserData->SystemCall[1] = 0x54;
SharedUserData->SystemCall[2] = 0x24;
SharedUserData->SystemCall[3] = 0x08;
SharedUserData->SystemCall[4] = 0xCD;
SharedUserData->SystemCall[5] = 0x2E;
SharedUserData->SystemCall[6] = 0xC3;
const unsigned char Entry[7] = {0x8D, 0x54, 0x24, 0x08, /* lea 0x8(%esp),%edx */
0xCD, 0x2E, /* int 0x2e */
0xC3}; /* ret */
memcpy(&SharedUserData->SystemCall, Entry, sizeof(Entry));
} else {
/* Use SYSENTER */
SharedUserData->SystemCall[0] = 0x8B;
SharedUserData->SystemCall[1] = 0xD4;
SharedUserData->SystemCall[2] = 0x0F;
SharedUserData->SystemCall[3] = 0x34;
SharedUserData->SystemCall[4] = 0xC3;
const unsigned char Entry[5] = {0x8B, 0xD4, /* movl %esp,%edx */
0x0F, 0x34, /* sysenter */
0xC3}; /* ret */
memcpy(&SharedUserData->SystemCall, Entry, sizeof(Entry));
/* Enable SYSENTER/SYSEXIT */
KiFastSystemCallDisable = 0;
}