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#include <arch/pm.h>
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#include <arch/pm.h>
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.text
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.text
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.global interrupt_handlers
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.global interrupt_handlers
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.global panic_printf
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.global panic_printf
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.global cpuid
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panic_printf:
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panic_printf:
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	movq $halt, (%rsp)
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	movq $halt, (%rsp)
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	jmp printf
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	jmp printf
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.global has_cpuid
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.global has_cpuid
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.global rdtsc
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.global rdtsc
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.global read_efer_flag
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.global set_efer_flag
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## Determine CPUID support
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## Determine CPUID support
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#
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#
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# Return 0 in EAX if CPUID is not support, 1 if supported.
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# Return 0 in EAX if CPUID is not support, 1 if supported.
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#
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#
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has_cpuid:
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has_cpuid:
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	xorl %ebx,%eax		# 0 if not supported, 1 if supported
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	xorl %ebx,%eax		# 0 if not supported, 1 if supported
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	popq %rbx
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	popq %rbx
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	ret
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	ret
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cpuid:
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	movq %rbx, %r10  # we have to preserve rbx across function calls
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	movl %edi,%eax	# load the command into %eax
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	cpuid
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	movl %eax,0(%rsi)
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	movl %ebx,4(%rsi)
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	movl %ecx,8(%rsi)
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	movl %edx,12(%rsi)
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	movq %r10, %rbx
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	ret
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rdtsc:
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rdtsc:
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	xorq %rax,%rax
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	xorq %rax,%rax
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	rdtsc
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	rdtsc
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	ret
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	ret
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set_efer_flag:
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	movq $0xc0000080, %rcx
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	rdmsr
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	btsl %edi, %eax
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	wrmsr
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	ret
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read_efer_flag:
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	movq $0xc0000080, %rcx
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	rdmsr
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	ret
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# Push all general purpose registers on stack except %rbp, %rsp
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# Push all general purpose registers on stack except %rbp, %rsp
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.macro push_all_gpr
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.macro push_all_gpr
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	pushq %rax
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	pushq %rax
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	pushq %rbx
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	pushq %rbx