minix/lib/libc/arch/i386/string/bcmp.S

/*
 * Written by J.T. Conklin <jtc@NetBSD.org>.
 * Public domain.
 */

#include <machine/asm.h>

#if defined(LIBC_SCCS)
	RCSID("$NetBSD: bcmp.S,v 1.9 2007/11/12 18:41:59 ad Exp $")
#endif

ENTRY(bcmp)
	pushl	%edi
	pushl	%esi
	movl	12(%esp),%edi
	movl	16(%esp),%esi
	xorl	%eax,%eax		/* clear return value */

	movl	20(%esp),%ecx		/* compare by words */
	shrl	$2,%ecx
	repe
	cmpsl
	jne	L1

	movl	20(%esp),%ecx		/* compare remainder by bytes */
	andl	$3,%ecx
	repe
	cmpsb
	je	L2

L1:	incl	%eax
L2:	popl	%esi
	popl	%edi
	ret
Full switch to clang/ELF. Drop ack. Simplify. There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree 2012-02-11 19:31:25 +01:00			`/*`
			`* Written by J.T. Conklin <jtc@NetBSD.org>.`
			`* Public domain.`
			`*/`
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00
Macros for symbols used in both ASM and C -The macros take care of prepending the leading underscore when necessary. 2010-08-17 18:44:07 +02:00			`#include <machine/asm.h>`

Full switch to clang/ELF. Drop ack. Simplify. There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree 2012-02-11 19:31:25 +01:00			`#if defined(LIBC_SCCS)`
			`RCSID("$NetBSD: bcmp.S,v 1.9 2007/11/12 18:41:59 ad Exp $")`
			`#endif`

Macros for symbols used in both ASM and C -The macros take care of prepending the leading underscore when necessary. 2010-08-17 18:44:07 +02:00			`ENTRY(bcmp)`
Full switch to clang/ELF. Drop ack. Simplify. There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree 2012-02-11 19:31:25 +01:00			`pushl %edi`
			`pushl %esi`
			`movl 12(%esp),%edi`
			`movl 16(%esp),%esi`
			`xorl %eax,%eax /* clear return value */`

			`movl 20(%esp),%ecx /* compare by words */`
			`shrl $2,%ecx`
			`repe`
			`cmpsl`
			`jne L1`

			`movl 20(%esp),%ecx /* compare remainder by bytes */`
			`andl $3,%ecx`
			`repe`
			`cmpsb`
			`je L2`

			`L1: incl %eax`
			`L2: popl %esi`
			`popl %edi`
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00			`ret`