diff options
Diffstat (limited to 'sys/arch/i386/boot/start.S')
| -rw-r--r-- | sys/arch/i386/boot/start.S | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/sys/arch/i386/boot/start.S b/sys/arch/i386/boot/start.S index 5efeafc340e..187c60129fe 100644 --- a/sys/arch/i386/boot/start.S +++ b/sys/arch/i386/boot/start.S @@ -1,4 +1,4 @@ -/* $OpenBSD: start.S,v 1.3 1996/05/18 10:33:14 mickey Exp $ */ +/* $OpenBSD: start.S,v 1.4 1996/06/02 11:18:14 mickey Exp $ */ /* $NetBSD: start.S,v 1.12 1995/01/18 17:34:18 mycroft Exp $ */ /*- @@ -114,9 +114,9 @@ start1: #endif #if !defined(NOFD) && !defined(NOHD) # bootstrap passes us drive number in %dl - cmpb $0x80, %dl + testb $0x80, %dl data32 - jae hd + jnz hd #endif #ifndef NOFD fd: @@ -139,7 +139,7 @@ fd: movl $0x0001, %ecx # cyl 0, sector 1 movb $0x00, %dh # head # XXX Override the drive number. - movb $0x00, %dl + # movb $0x00, %dl data32 jmp load #endif @@ -181,11 +181,6 @@ again: data32 jmp err_stop #endif -#else /* !DOSREAD */ - movb $0xff, %dl - jmp _C_LABEL(boot2) - -#endif /* DOSREAD */ /* # BIOS call "INT 0x13 Function 0x2" to read sectors from disk into memory @@ -254,9 +249,9 @@ load: jb read_error #ifndef NOHD - cmpb $0x80, %dl /* no concurent dos on floppy */ + testb $0x80, %dl /* no fdisk partion table on floppy */ data32 - jl dobsd + jz dobsd addr32 movb %es:4(%ebx), %al @@ -350,6 +345,10 @@ done: popl %eax data32 ret +#else /* !DOSREAD */ + movb $0xff, %dl + jmp _C_LABEL(boot2) +#endif /* DOSREAD */ /* Conventional GDT indexes. */ BOOT_CS_INDEX = 3 @@ -411,7 +410,7 @@ stop: /* error messages */ -#ifdef DEBUG +#if defined(DEBUG) && !defined(DOSREAD) #ifdef FDDEBUG one: .asciz "1\r\n" two: .asciz "2\r\n" @@ -422,6 +421,7 @@ five: .asciz "5\r\n" six: .asciz "6\r\n" seven: .asciz "7\r\n" #endif /* DEBUG */ +#ifndef DOSREAD eread: .asciz "Read error\r\n" enoboot: .asciz "No bootable partition\r\n" endofcode: @@ -440,6 +440,7 @@ endofcode: . = _C_LABEL(boot1) + 0x1fe .short SIGNATURE . = _C_LABEL(boot1) + 0x200 +#endif .globl _disklabel _disklabel: . = _C_LABEL(boot1) + 0x400 |