reactos/hal/halx86/apic/apictrap.S
2020-09-20 23:08:17 +02:00

75 lines
1.6 KiB
ArmAsm

/*
* FILE: hal/halx86/apic/apictrap.S
* COPYRIGHT: See COPYING in the top level directory
* PURPOSE: System Traps, Entrypoints and Exitpoints
* PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
* NOTE: See asmmacro.S for the shared entry/exit code.
*/
/* INCLUDES ******************************************************************/
#include <asm.inc>
#ifdef _M_AMD64
#include <ksamd64.inc>
#include <trapamd64.inc>
.code
TRAP_ENTRY HalpClockInterrupt, (TF_VOLATILES OR TF_SEND_EOI)
TRAP_ENTRY HalpProfileInterrupt, (TF_VOLATILES OR TF_SEND_EOI)
PUBLIC ApicSpuriousService
ApicSpuriousService:
iretq
PUBLIC HackEoi
HackEoi:
xor rax, rax
mov ax, ss
push rax
push rsp
pushfq
mov ax, cs
push rax
lea rax, HackEoiReturn[rip]
push rax
mov dword ptr [HEX(0FFFFFFFFFFFE00B0)], 0
iretq
HackEoiReturn:
add rsp, 8 // esp was changed by the iret to the pushed value
ret
#else
#include <ks386.inc>
#include <internal/i386/asmmacro.S>
.code
TRAP_ENTRY HalpClockInterrupt, KI_PUSH_FAKE_ERROR_CODE
TRAP_ENTRY HalpProfileInterrupt, KI_PUSH_FAKE_ERROR_CODE
TRAP_ENTRY HalpTrap0D, 0
TRAP_ENTRY HalpApcInterrupt, KI_PUSH_FAKE_ERROR_CODE
TRAP_ENTRY HalpDispatchInterrupt, KI_PUSH_FAKE_ERROR_CODE
PUBLIC _ApicSpuriousService
_ApicSpuriousService:
iret
// VBox APIC needs an iret more or less directly following the EOI
PUBLIC _HackEoi
_HackEoi:
pushfd
push cs
push offset OnlyOnePersonKnowsHowToHackAroundVBoxBugsAndThatIsNotYou // !!
mov dword ptr ds:[HEX(0FFFE00B0)], 0
iretd
OnlyOnePersonKnowsHowToHackAroundVBoxBugsAndThatIsNotYou:
ret
#endif
END