mirror of
https://github.com/clearlinux/kvmtool.git
synced 2026-06-16 02:15:47 +00:00
Matt Evans
af7b086859
Create a new arch-specific subdirectory to contain architecture-specific code
and includes.
The Makefile now adds various arch-specific objects based on detected
architecture. That aside, this patch should only contain code moves. These
include:
- x86-specific kvm_cpu setup, kernel loading, memory setup etc. now in
x86/kvm{-cpu}.c
- BIOS now lives in x86/bios/
- ioport setup
- KVM extensions are asserted in arch-specific kvm.c now, so each architecture
can manage its own dependencies.
- Various architecture-specific #defines are moved into $(ARCH)/include/kvm{-cpu}.h
such as struct kvm_cpu, KVM_NR_CPUS, KVM_32BIT_GAP_SIZE.
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
93 lines
1.3 KiB
ArmAsm
93 lines
1.3 KiB
ArmAsm
/*
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* Our pretty trivial BIOS emulation
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*/
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#include <kvm/bios.h>
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#include <kvm/assembly.h>
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.org 0
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.code16gcc
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#define EFLAGS_CF (1 << 0)
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#include "macro.S"
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/* If you change these macros, remember to update 'struct biosregs' */
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.macro SAVE_BIOSREGS
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pushl %fs
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pushl %es
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pushl %ds
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pushl %edi
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pushl %esi
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pushl %ebp
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pushl %esp
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pushl %edx
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pushl %ecx
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pushl %ebx
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pushl %eax
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.endm
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.macro RESTORE_BIOSREGS
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popl %eax
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popl %ebx
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popl %ecx
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popl %edx
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popl %esp
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popl %ebp
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popl %esi
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popl %edi
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popl %ds
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popl %es
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popl %fs
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.endm
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/*
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* fake interrupt handler, nothing can be faster ever
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*/
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ENTRY(bios_intfake)
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/*
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* Set CF to indicate failure. We don't want callers to think that the
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* interrupt handler succeeded and then treat the return values in
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* registers as valid data.
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*/
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orl $EFLAGS_CF, 0x4(%esp)
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IRET
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ENTRY_END(bios_intfake)
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/*
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* int 10 - video - service
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*/
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ENTRY(bios_int10)
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SAVE_BIOSREGS
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movl %esp, %eax
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/* this is way easier than doing it in assembly */
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/* just push all the regs and jump to a C handler */
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call int10_handler
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RESTORE_BIOSREGS
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/* Clear CF to indicate success. */
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andl $~EFLAGS_CF, 0x4(%esp)
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IRET
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ENTRY_END(bios_int10)
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ENTRY(bios_int15)
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SAVE_BIOSREGS
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movl %esp, %eax
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call int15_handler
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RESTORE_BIOSREGS
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IRET
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ENTRY_END(bios_int15)
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GLOBAL(__locals)
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#include "local.S"
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END(__locals)
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