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https://github.com/reactos/reactos.git
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7601fb549c
- Rename UP -> PIC. The "up" folder in fact contains the code for managing the Intel 8259 PIC chip - Move amd64/processor.c -> apic/processor.c. The code is not tied to amd64 - Remove platform from "halinit*" files. They already reside in the corresponding folder
79 lines
2.1 KiB
ArmAsm
79 lines
2.1 KiB
ArmAsm
/*
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* PROJECT: ReactOS Hardware Abstraction Layer
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: HAL PIC Management and Control Code
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* COPYRIGHT: Copyright 2016-2018 Thomas Faber <thomas.faber@reactos.org>
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*/
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/* INCLUDES ******************************************************************/
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#include <asm.inc>
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#include <ks386.inc>
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/* FUNCTIONS *****************************************************************/
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.code
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MACRO(DEFINE_END_INTERRUPT_WRAPPER, WrapperName, HandlerName)
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EXTERN @&HandlerName&@8:PROC
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PUBLIC _&WrapperName&@8
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.PROC _&WrapperName&@8
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FPO 0, 2, 0, 0, 0, FRAME_FPO
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/* Call the C function with the same arguments we got */
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mov ecx, [esp+4]
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mov edx, [esp+8]
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call @&HandlerName&@8
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/* Check if we got a pointer back */
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test eax, eax
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jnz WrapperName&_CallIntHandler
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/* No? Just return */
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ret 8
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WrapperName&_CallIntHandler:
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/* We got a pointer to call. Since it won't return, reset the stack to
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the location of the stack frame. This frees up our own stack as well
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as that of the functions above us, and avoids an overflow due to
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excessive recursion.
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The next function takes the trap frame as its (fastcall) argument. */
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mov ecx, [esp+8]
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mov esp, ecx
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mov ebp, esp
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jmp eax
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.ENDP
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ENDM
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MACRO(DEFINE_INTERRUPT_WRAPPER, WrapperName, HandlerName)
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EXTERN _&HandlerName:PROC
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PUBLIC _&WrapperName
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.PROC _&WrapperName
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FPO 0, 0, 0, 0, 0, FRAME_FPO
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/* Call the C function */
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call _&HandlerName
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/* Check if we got a pointer back */
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test eax, eax
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jnz WrapperName&_CallIntHandler
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/* No? Just return */
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ret
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WrapperName&_CallIntHandler:
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/* Optimize the tail call to avoid stack overflow */
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jmp eax
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.ENDP
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ENDM
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DEFINE_END_INTERRUPT_WRAPPER HalpEndSoftwareInterrupt, HalpEndSoftwareInterrupt2
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DEFINE_END_INTERRUPT_WRAPPER HalEndSystemInterrupt, HalEndSystemInterrupt2
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DEFINE_INTERRUPT_WRAPPER HalpDispatchInterrupt, HalpDispatchInterrupt2
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DEFINE_INTERRUPT_WRAPPER HalpHardwareInterruptLevel, HalpHardwareInterruptLevel2
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END
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