Move sensitive instructions from libc into kernel

kernel/arch/i386/Makefile.inc

@@ -12,6 +12,13 @@ SRCS+=	arch_do_vmctl.c \
 	do_sdevio.c \
 	exception.c \
 	i8259.c \
+	io_inb.S \
+	io_inl.S \
+	io_intr.S \
+	io_inw.S \
+	io_outb.S \
+	io_outl.S \
+	io_outw.S \
 	klib.S \
 	memory.c \
 	oxpcie.c \

kernel/arch/i386/io_inb.S

@@ -0,0 +1,14 @@
+/*	inb() - Input one byte				Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	unsigned inb(U16_t port); */
+
+.text
+.globl	_inb
+_inb:
+	push	%ebp
+	movl	%esp, %ebp
+	movl	8(%ebp), %edx	/* port */
+	xorl	%eax, %eax
+	inb	%dx	/* read 1 byte */
+	pop	%ebp
+	ret

kernel/arch/i386/io_inl.S

@@ -0,0 +1,13 @@
+/*	inl() - Input one dword				Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	unsigned inl(U16_t port); */
+
+.text
+.globl	_inl
+_inl:
+	push	%ebp
+	movl	%esp, %ebp
+	movl	8(%ebp), %edx	/* port */
+	inl	%dx	/* read 1 dword */
+	pop	%ebp
+	ret

kernel/arch/i386/io_intr.S

@@ -0,0 +1,16 @@
+/*	intr_disable(), intr_enable - Disable/Enable hardware interrupts. */
+/*							Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	void intr_disable(void); */
+/*	void intr_enable(void); */
+
+.text
+.globl	_intr_disable
+_intr_disable:
+	cli
+	ret
+
+.globl	_intr_enable
+_intr_enable:
+	sti
+	ret

kernel/arch/i386/io_inw.S

@@ -0,0 +1,14 @@
+/*	inw() - Input one word				Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	unsigned inw(U16_t port); */
+
+.text
+.globl	_inw
+_inw:
+	push	%ebp
+	movl	%esp, %ebp
+	movl	8(%ebp), %edx	/* port */
+	xorl	%eax, %eax
+	inw	%dx	/* read 1 word */
+	pop	%ebp
+	ret

kernel/arch/i386/io_outb.S

@@ -0,0 +1,14 @@
+/*	outb() - Output one byte			Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	void outb(U16_t port, U8_t value); */
+
+.text
+.globl	_outb
+_outb:
+	push	%ebp
+	movl	%esp, %ebp
+	movl	8(%ebp), %edx	/* port */
+	movl	8+4(%ebp), %eax	/* value */
+	outb	%dx	/* output 1 byte */
+	pop	%ebp
+	ret

kernel/arch/i386/io_outl.S

@@ -0,0 +1,14 @@
+/*	outl() - Output one dword			Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	void outl(U16_t port, u32_t value); */
+
+.text
+.globl	_outl
+_outl:
+	push	%ebp
+	movl	%esp, %ebp
+	movl	8(%ebp), %edx	/* port */
+	movl	8+4(%ebp), %eax	/* value */
+	outl	%dx	/* output 1 dword */
+	pop	%ebp
+	ret

kernel/arch/i386/io_outw.S

@@ -0,0 +1,14 @@
+/*	outw() - Output one word			Author: Kees J. Bot */
+/*								18 Mar 1996 */
+/*	void outw(U16_t port, U16_t value); */
+
+.text
+.globl	_outw
+_outw:
+	push	%ebp
+	movl	%esp, %ebp
+	movl	8(%ebp), %edx	/* port */
+	movl	8+4(%ebp), %eax	/* value */
+	outw	%dx	/* output 1 word */
+	pop	%ebp
+	ret